Swiftdiff options
Diffstat (limited to '3rdParty/CAres/src')
63 files changed, 12309 insertions, 0 deletions
diff --git a/3rdParty/CAres/src/ares.h b/3rdParty/CAres/src/ares.h new file mode 100644 index 0000000..b1c2c22 --- /dev/null +++ b/3rdParty/CAres/src/ares.h @@ -0,0 +1,494 @@ +/* $Id: ares.h,v 1.72 2009-11-23 12:03:32 yangtse Exp $ */ + +/* Copyright 1998, 2009 by the Massachusetts Institute of Technology. + * Copyright (C) 2007-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef ARES__H +#define ARES__H + +#include "ares_version.h" /* c-ares version defines */ +#include "ares_build.h" /* c-ares build definitions */ +#include "ares_rules.h" /* c-ares rules enforcement */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && \ + !defined(WIN32) && !defined(__SYMBIAN32__) +# define WIN32 +#endif + +#include <sys/types.h> + +/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish + libc5-based Linux systems. Only include it on system that are known to + require it! */ +#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \ + defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) +#include <sys/select.h> +#endif +#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) +#include <sys/bsdskt.h> +#endif + +#if defined(WATT32) +# include <netinet/in.h> +# include <sys/socket.h> +# include <tcp.h> +#elif defined(WIN32) +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# include <winsock2.h> +# include <ws2tcpip.h> +#else +# include <sys/socket.h> +# include <netinet/in.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* +** c-ares external API function linkage decorations. +*/ + +#if !defined(CARES_STATICLIB) && \ + (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)) + /* __declspec function decoration for Win32 and Symbian DLL's */ +# if defined(CARES_BUILDING_LIBRARY) +# define CARES_EXTERN __declspec(dllexport) +# else +# define CARES_EXTERN __declspec(dllimport) +# endif +#else + /* visibility function decoration for other cases */ +# if !defined(CARES_SYMBOL_HIDING) || \ + defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__) +# define CARES_EXTERN +# else +# define CARES_EXTERN CARES_SYMBOL_SCOPE_EXTERN +# endif +#endif + + +#define ARES_SUCCESS 0 + +/* Server error codes (ARES_ENODATA indicates no relevant answer) */ +#define ARES_ENODATA 1 +#define ARES_EFORMERR 2 +#define ARES_ESERVFAIL 3 +#define ARES_ENOTFOUND 4 +#define ARES_ENOTIMP 5 +#define ARES_EREFUSED 6 + +/* Locally generated error codes */ +#define ARES_EBADQUERY 7 +#define ARES_EBADNAME 8 +#define ARES_EBADFAMILY 9 +#define ARES_EBADRESP 10 +#define ARES_ECONNREFUSED 11 +#define ARES_ETIMEOUT 12 +#define ARES_EOF 13 +#define ARES_EFILE 14 +#define ARES_ENOMEM 15 +#define ARES_EDESTRUCTION 16 +#define ARES_EBADSTR 17 + +/* ares_getnameinfo error codes */ +#define ARES_EBADFLAGS 18 + +/* ares_getaddrinfo error codes */ +#define ARES_ENONAME 19 +#define ARES_EBADHINTS 20 + +/* Uninitialized library error code */ +#define ARES_ENOTINITIALIZED 21 /* introduced in 1.7.0 */ + +/* ares_library_init error codes */ +#define ARES_ELOADIPHLPAPI 22 /* introduced in 1.7.0 */ +#define ARES_EADDRGETNETWORKPARAMS 23 /* introduced in 1.7.0 */ + +/* More error codes */ +#define ARES_ECANCELLED 24 /* introduced in 1.7.0 */ + +/* Flag values */ +#define ARES_FLAG_USEVC (1 << 0) +#define ARES_FLAG_PRIMARY (1 << 1) +#define ARES_FLAG_IGNTC (1 << 2) +#define ARES_FLAG_NORECURSE (1 << 3) +#define ARES_FLAG_STAYOPEN (1 << 4) +#define ARES_FLAG_NOSEARCH (1 << 5) +#define ARES_FLAG_NOALIASES (1 << 6) +#define ARES_FLAG_NOCHECKRESP (1 << 7) + +/* Option mask values */ +#define ARES_OPT_FLAGS (1 << 0) +#define ARES_OPT_TIMEOUT (1 << 1) +#define ARES_OPT_TRIES (1 << 2) +#define ARES_OPT_NDOTS (1 << 3) +#define ARES_OPT_UDP_PORT (1 << 4) +#define ARES_OPT_TCP_PORT (1 << 5) +#define ARES_OPT_SERVERS (1 << 6) +#define ARES_OPT_DOMAINS (1 << 7) +#define ARES_OPT_LOOKUPS (1 << 8) +#define ARES_OPT_SOCK_STATE_CB (1 << 9) +#define ARES_OPT_SORTLIST (1 << 10) +#define ARES_OPT_SOCK_SNDBUF (1 << 11) +#define ARES_OPT_SOCK_RCVBUF (1 << 12) +#define ARES_OPT_TIMEOUTMS (1 << 13) +#define ARES_OPT_ROTATE (1 << 14) + +/* Nameinfo flag values */ +#define ARES_NI_NOFQDN (1 << 0) +#define ARES_NI_NUMERICHOST (1 << 1) +#define ARES_NI_NAMEREQD (1 << 2) +#define ARES_NI_NUMERICSERV (1 << 3) +#define ARES_NI_DGRAM (1 << 4) +#define ARES_NI_TCP 0 +#define ARES_NI_UDP ARES_NI_DGRAM +#define ARES_NI_SCTP (1 << 5) +#define ARES_NI_DCCP (1 << 6) +#define ARES_NI_NUMERICSCOPE (1 << 7) +#define ARES_NI_LOOKUPHOST (1 << 8) +#define ARES_NI_LOOKUPSERVICE (1 << 9) +/* Reserved for future use */ +#define ARES_NI_IDN (1 << 10) +#define ARES_NI_IDN_ALLOW_UNASSIGNED (1 << 11) +#define ARES_NI_IDN_USE_STD3_ASCII_RULES (1 << 12) + +/* Addrinfo flag values */ +#define ARES_AI_CANONNAME (1 << 0) +#define ARES_AI_NUMERICHOST (1 << 1) +#define ARES_AI_PASSIVE (1 << 2) +#define ARES_AI_NUMERICSERV (1 << 3) +#define ARES_AI_V4MAPPED (1 << 4) +#define ARES_AI_ALL (1 << 5) +#define ARES_AI_ADDRCONFIG (1 << 6) +/* Reserved for future use */ +#define ARES_AI_IDN (1 << 10) +#define ARES_AI_IDN_ALLOW_UNASSIGNED (1 << 11) +#define ARES_AI_IDN_USE_STD3_ASCII_RULES (1 << 12) +#define ARES_AI_CANONIDN (1 << 13) + +#define ARES_AI_MASK (ARES_AI_CANONNAME|ARES_AI_NUMERICHOST|ARES_AI_PASSIVE| \ + ARES_AI_NUMERICSERV|ARES_AI_V4MAPPED|ARES_AI_ALL| \ + ARES_AI_ADDRCONFIG) +#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about this + many sockets */ +#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num))) +#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \ + ARES_GETSOCK_MAXNUM))) + +/* c-ares library initialization flag values */ +#define ARES_LIB_INIT_NONE (0) +#define ARES_LIB_INIT_WIN32 (1 << 0) +#define ARES_LIB_INIT_ALL (ARES_LIB_INIT_WIN32) + + +/* + * Typedef our socket type + */ + +#ifndef ares_socket_typedef +#ifdef WIN32 +typedef SOCKET ares_socket_t; +#define ARES_SOCKET_BAD INVALID_SOCKET +#else +typedef int ares_socket_t; +#define ARES_SOCKET_BAD -1 +#endif +#define ares_socket_typedef +#endif /* ares_socket_typedef */ + +typedef void (*ares_sock_state_cb)(void *data, + ares_socket_t socket_fd, + int readable, + int writable); + +struct apattern; + +/* NOTE about the ares_options struct to users and developers. + + This struct will remain looking like this. It will not be extended nor + shrunk in future releases, but all new options will be set by ares_set_*() + options instead of with the ares_init_options() function. + + Eventually (in a galaxy far far away), all options will be settable by + ares_set_*() options and the ares_init_options() function will become + deprecated. + + When new options are added to c-ares, they are not added to this + struct. And they are not "saved" with the ares_save_options() function but + instead we encourage the use of the ares_dup() function. Needless to say, + if you add config options to c-ares you need to make sure ares_dup() + duplicates this new option. + + */ +struct ares_options { + int flags; + int timeout; /* in seconds or milliseconds, depending on options */ + int tries; + int ndots; + unsigned short udp_port; + unsigned short tcp_port; + int socket_send_buffer_size; + int socket_receive_buffer_size; + struct in_addr *servers; + int nservers; + char **domains; + int ndomains; + char *lookups; + ares_sock_state_cb sock_state_cb; + void *sock_state_cb_data; + struct apattern *sortlist; + int nsort; +}; + +struct hostent; +struct timeval; +struct sockaddr; +struct ares_channeldata; + +typedef struct ares_channeldata *ares_channel; + +typedef void (*ares_callback)(void *arg, + int status, + int timeouts, + unsigned char *abuf, + int alen); + +typedef void (*ares_host_callback)(void *arg, + int status, + int timeouts, + struct hostent *hostent); + +typedef void (*ares_nameinfo_callback)(void *arg, + int status, + int timeouts, + char *node, + char *service); + +typedef int (*ares_sock_create_callback)(ares_socket_t socket_fd, + int type, + void *data); + +CARES_EXTERN int ares_library_init(int flags); + +CARES_EXTERN void ares_library_cleanup(void); + +CARES_EXTERN const char *ares_version(int *version); + +CARES_EXTERN int ares_init(ares_channel *channelptr); + +CARES_EXTERN int ares_init_options(ares_channel *channelptr, + struct ares_options *options, + int optmask); + +CARES_EXTERN int ares_save_options(ares_channel channel, + struct ares_options *options, + int *optmask); + +CARES_EXTERN void ares_destroy_options(struct ares_options *options); + +CARES_EXTERN int ares_dup(ares_channel *dest, + ares_channel src); + +CARES_EXTERN void ares_destroy(ares_channel channel); + +CARES_EXTERN void ares_cancel(ares_channel channel); + +CARES_EXTERN void ares_set_socket_callback(ares_channel channel, + ares_sock_create_callback callback, + void *user_data); + +CARES_EXTERN void ares_send(ares_channel channel, + const unsigned char *qbuf, + int qlen, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_query(ares_channel channel, + const char *name, + int dnsclass, + int type, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_search(ares_channel channel, + const char *name, + int dnsclass, + int type, + ares_callback callback, + void *arg); + +CARES_EXTERN void ares_gethostbyname(ares_channel channel, + const char *name, + int family, + ares_host_callback callback, + void *arg); + +CARES_EXTERN int ares_gethostbyname_file(ares_channel channel, + const char *name, + int family, + struct hostent **host); + +CARES_EXTERN void ares_gethostbyaddr(ares_channel channel, + const void *addr, + int addrlen, + int family, + ares_host_callback callback, + void *arg); + +CARES_EXTERN void ares_getnameinfo(ares_channel channel, + const struct sockaddr *sa, + ares_socklen_t salen, + int flags, + ares_nameinfo_callback callback, + void *arg); + +CARES_EXTERN int ares_fds(ares_channel channel, + fd_set *read_fds, + fd_set *write_fds); + +CARES_EXTERN int ares_getsock(ares_channel channel, + int *socks, + int numsocks); + +CARES_EXTERN struct timeval *ares_timeout(ares_channel channel, + struct timeval *maxtv, + struct timeval *tv); + +CARES_EXTERN void ares_process(ares_channel channel, + fd_set *read_fds, + fd_set *write_fds); + +CARES_EXTERN void ares_process_fd(ares_channel channel, + ares_socket_t read_fd, + ares_socket_t write_fd); + +CARES_EXTERN int ares_mkquery(const char *name, + int dnsclass, + int type, + unsigned short id, + int rd, + unsigned char **buf, + int *buflen); + +CARES_EXTERN int ares_expand_name(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + char **s, + long *enclen); + +CARES_EXTERN int ares_expand_string(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + unsigned char **s, + long *enclen); + +/* + * NOTE: before c-ares 1.7.0 we would most often use the system in6_addr + * struct below when ares itself was built, but many apps would use this + * private version since the header checked a HAVE_* define for it. Starting + * with 1.7.0 we always declare and use our own to stop relying on the + * system's one. + */ +struct ares_in6_addr { + union { + unsigned char _S6_u8[16]; + } _S6_un; +}; + +struct ares_addrttl { + struct in_addr ipaddr; + int ttl; +}; + +struct ares_addr6ttl { + struct ares_in6_addr ip6addr; + int ttl; +}; + +struct ares_srv_reply { + struct ares_srv_reply *next; + char *host; + unsigned short priority; + unsigned short weight; + unsigned short port; +}; + +struct ares_txt_reply { + struct ares_txt_reply *next; + unsigned char *txt; + size_t length; /* length excludes null termination */ +}; + +/* +** Parse the buffer, starting at *abuf and of length alen bytes, previously +** obtained from an ares_search call. Put the results in *host, if nonnull. +** Also, if addrttls is nonnull, put up to *naddrttls IPv4 addresses along with +** their TTLs in that array, and set *naddrttls to the number of addresses +** so written. +*/ + +CARES_EXTERN int ares_parse_a_reply(const unsigned char *abuf, + int alen, + struct hostent **host, + struct ares_addrttl *addrttls, + int *naddrttls); + +CARES_EXTERN int ares_parse_aaaa_reply(const unsigned char *abuf, + int alen, + struct hostent **host, + struct ares_addr6ttl *addrttls, + int *naddrttls); + +CARES_EXTERN int ares_parse_ptr_reply(const unsigned char *abuf, + int alen, + const void *addr, + int addrlen, + int family, + struct hostent **host); + +CARES_EXTERN int ares_parse_ns_reply(const unsigned char *abuf, + int alen, + struct hostent **host); + +CARES_EXTERN int ares_parse_srv_reply(const unsigned char* abuf, + int alen, + struct ares_srv_reply** srv_out); + +CARES_EXTERN int ares_parse_txt_reply(const unsigned char* abuf, + int alen, + struct ares_txt_reply** txt_out); + +CARES_EXTERN void ares_free_string(void *str); + +CARES_EXTERN void ares_free_hostent(struct hostent *host); + +CARES_EXTERN void ares_free_data(void *dataptr); + +CARES_EXTERN const char *ares_strerror(int code); + +#ifdef __cplusplus +} +#endif + +#endif /* ARES__H */ diff --git a/3rdParty/CAres/src/ares__close_sockets.c b/3rdParty/CAres/src/ares__close_sockets.c new file mode 100644 index 0000000..ef8910d --- /dev/null +++ b/3rdParty/CAres/src/ares__close_sockets.c @@ -0,0 +1,67 @@ +/* $Id: ares__close_sockets.c,v 1.10 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include <stdlib.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +void ares__close_sockets(ares_channel channel, struct server_state *server) +{ + struct send_request *sendreq; + + /* Free all pending output buffers. */ + while (server->qhead) + { + /* Advance server->qhead; pull out query as we go. */ + sendreq = server->qhead; + server->qhead = sendreq->next; + if (sendreq->data_storage != NULL) + free(sendreq->data_storage); + free(sendreq); + } + server->qtail = NULL; + + /* Reset any existing input buffer. */ + if (server->tcp_buffer) + free(server->tcp_buffer); + server->tcp_buffer = NULL; + server->tcp_lenbuf_pos = 0; + + /* Reset brokenness */ + server->is_broken = 0; + + /* Close the TCP and UDP sockets. */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0); + sclose(server->tcp_socket); + server->tcp_socket = ARES_SOCKET_BAD; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + } + if (server->udp_socket != ARES_SOCKET_BAD) + { + SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0); + sclose(server->udp_socket); + server->udp_socket = ARES_SOCKET_BAD; + } +} diff --git a/3rdParty/CAres/src/ares__get_hostent.c b/3rdParty/CAres/src/ares__get_hostent.c new file mode 100644 index 0000000..335f763 --- /dev/null +++ b/3rdParty/CAres/src/ares__get_hostent.c @@ -0,0 +1,264 @@ +/* $Id: ares__get_hostent.c,v 1.24 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998, 2009 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +int ares__get_hostent(FILE *fp, int family, struct hostent **host) +{ + char *line = NULL, *p, *q, **alias; + char *txtaddr, *txthost, *txtalias; + int status; + size_t addrlen, linesize, naliases; + struct ares_addr addr; + struct hostent *hostent = NULL; + + *host = NULL; /* Assume failure */ + + /* Validate family */ + switch (family) { + case AF_INET: + case AF_INET6: + case AF_UNSPEC: + break; + default: + return ARES_EBADFAMILY; + } + + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + + /* Trim line comment. */ + p = line; + while (*p && (*p != '#')) + p++; + *p = '\0'; + + /* Trim trailing whitespace. */ + q = p - 1; + while ((q >= line) && ISSPACE(*q)) + q--; + *++q = '\0'; + + /* Skip leading whitespace. */ + p = line; + while (*p && ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if empty. */ + continue; + + /* Pointer to start of IPv4 or IPv6 address part. */ + txtaddr = p; + + /* Advance past address part. */ + while (*p && !ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if reached end of line. */ + continue; + + /* Null terminate address part. */ + *p = '\0'; + + /* Advance to host name */ + p++; + while (*p && ISSPACE(*p)) + p++; + if (!*p) + /* Ignore line if reached end of line. */ + continue; + + /* Pointer to start of host name. */ + txthost = p; + + /* Advance past host name. */ + while (*p && !ISSPACE(*p)) + p++; + + /* Pointer to start of first alias. */ + txtalias = NULL; + if (*p) + { + q = p + 1; + while (*q && ISSPACE(*q)) + q++; + if (*q) + txtalias = q; + } + + /* Null terminate host name. */ + *p = '\0'; + + /* find out number of aliases. */ + naliases = 0; + if (txtalias) + { + p = txtalias; + while (*p) + { + while (*p && !ISSPACE(*p)) + p++; + while (*p && ISSPACE(*p)) + p++; + naliases++; + } + } + + /* Convert address string to network address for the requested family. */ + addrlen = 0; + addr.family = AF_UNSPEC; + addr.addrV4.s_addr = INADDR_NONE; + if ((family == AF_INET) || (family == AF_UNSPEC)) + { + addr.addrV4.s_addr = inet_addr(txtaddr); + if (addr.addrV4.s_addr != INADDR_NONE) + { + /* Actual network address family and length. */ + addr.family = AF_INET; + addrlen = sizeof(struct in_addr); + } + } + if ((family == AF_INET6) || ((family == AF_UNSPEC) && (!addrlen))) + { + if (ares_inet_pton(AF_INET6, txtaddr, &addr.addrV6) > 0) + { + /* Actual network address family and length. */ + addr.family = AF_INET6; + addrlen = sizeof(struct in6_addr); + } + } + if (!addrlen) + /* Ignore line if invalid address string for the requested family. */ + continue; + + /* + ** Actual address family possible values are AF_INET and AF_INET6 only. + */ + + /* Allocate memory for the hostent structure. */ + hostent = malloc(sizeof(struct hostent)); + if (!hostent) + break; + + /* Initialize fields for out of memory condition. */ + hostent->h_aliases = NULL; + hostent->h_addr_list = NULL; + + /* Copy official host name. */ + hostent->h_name = strdup(txthost); + if (!hostent->h_name) + break; + + /* Copy network address. */ + hostent->h_addr_list = malloc(2 * sizeof(char *)); + if (!hostent->h_addr_list) + break; + hostent->h_addr_list[1] = NULL; + hostent->h_addr_list[0] = malloc(addrlen); + if (!hostent->h_addr_list[0]) + break; + if (addr.family == AF_INET) + memcpy(hostent->h_addr_list[0], &addr.addrV4, sizeof(struct in_addr)); + else + memcpy(hostent->h_addr_list[0], &addr.addrV6, sizeof(struct in6_addr)); + + /* Copy aliases. */ + hostent->h_aliases = malloc((naliases + 1) * sizeof(char *)); + if (!hostent->h_aliases) + break; + alias = hostent->h_aliases; + while (naliases) + *(alias + naliases--) = NULL; + *alias = NULL; + while (txtalias) + { + p = txtalias; + while (*p && !ISSPACE(*p)) + p++; + q = p; + while (*q && ISSPACE(*q)) + q++; + *p = '\0'; + if ((*alias = strdup(txtalias)) == NULL) + break; + alias++; + txtalias = *q ? q : NULL; + } + if (txtalias) + /* Alias memory allocation failure. */ + break; + + /* Copy actual network address family and length. */ + hostent->h_addrtype = addr.family; + hostent->h_length = (int)addrlen; + + /* Free line buffer. */ + free(line); + + /* Return hostent successfully */ + *host = hostent; + return ARES_SUCCESS; + + } + + /* If allocated, free line buffer. */ + if (line) + free(line); + + if (status == ARES_SUCCESS) + { + /* Memory allocation failure; clean up. */ + if (hostent) + { + if (hostent->h_name) + free((char *) hostent->h_name); + if (hostent->h_aliases) + { + for (alias = hostent->h_aliases; *alias; alias++) + free(*alias); + free(hostent->h_aliases); + } + if (hostent->h_addr_list) + { + if (hostent->h_addr_list[0]) + free(hostent->h_addr_list[0]); + free(hostent->h_addr_list); + } + free(hostent); + } + return ARES_ENOMEM; + } + + return status; +} diff --git a/3rdParty/CAres/src/ares__read_line.c b/3rdParty/CAres/src/ares__read_line.c new file mode 100644 index 0000000..270e0e3 --- /dev/null +++ b/3rdParty/CAres/src/ares__read_line.c @@ -0,0 +1,67 @@ +/* $Id: ares__read_line.c,v 1.14 2009-11-10 18:41:03 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_private.h" + +/* This is an internal function. Its contract is to read a line from + * a file into a dynamically allocated buffer, zeroing the trailing + * newline if there is one. The calling routine may call + * ares__read_line multiple times with the same buf and bufsize + * pointers; *buf will be reallocated and *bufsize adjusted as + * appropriate. The initial value of *buf should be NULL. After the + * calling routine is done reading lines, it should free *buf. + */ +int ares__read_line(FILE *fp, char **buf, size_t *bufsize) +{ + char *newbuf; + size_t offset = 0; + size_t len; + + if (*buf == NULL) + { + *buf = malloc(128); + if (!*buf) + return ARES_ENOMEM; + *bufsize = 128; + } + + for (;;) + { + if (!fgets(*buf + offset, (int)(*bufsize - offset), fp)) + return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF; + len = offset + strlen(*buf + offset); + if ((*buf)[len - 1] == '\n') + { + (*buf)[len - 1] = 0; + break; + } + offset = len; + + /* Allocate more space. */ + newbuf = realloc(*buf, *bufsize * 2); + if (!newbuf) + return ARES_ENOMEM; + *buf = newbuf; + *bufsize *= 2; + } + return ARES_SUCCESS; +} diff --git a/3rdParty/CAres/src/ares__timeval.c b/3rdParty/CAres/src/ares__timeval.c new file mode 100644 index 0000000..2957350 --- /dev/null +++ b/3rdParty/CAres/src/ares__timeval.c @@ -0,0 +1,112 @@ +/* $Id: ares__timeval.c,v 1.6 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright (C) 2008 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares.h" +#include "ares_private.h" + +#if defined(WIN32) && !defined(MSDOS) + +struct timeval ares__tvnow(void) +{ + /* + ** GetTickCount() is available on _all_ Windows versions from W95 up + ** to nowadays. Returns milliseconds elapsed since last system boot, + ** increases monotonically and wraps once 49.7 days have elapsed. + */ + struct timeval now; + DWORD milliseconds = GetTickCount(); + now.tv_sec = milliseconds / 1000; + now.tv_usec = (milliseconds % 1000) * 1000; + return now; +} + +#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC) + +struct timeval ares__tvnow(void) +{ + /* + ** clock_gettime() is granted to be increased monotonically when the + ** monotonic clock is queried. Time starting point is unspecified, it + ** could be the system start-up time, the Epoch, or something else, + ** in any case the time starting point does not change once that the + ** system has started up. + */ + struct timeval now; + struct timespec tsnow; + if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) { + now.tv_sec = tsnow.tv_sec; + now.tv_usec = tsnow.tv_nsec / 1000; + } + /* + ** Even when the configure process has truly detected monotonic clock + ** availability, it might happen that it is not actually available at + ** run-time. When this occurs simply fallback to other time source. + */ +#ifdef HAVE_GETTIMEOFDAY + else + (void)gettimeofday(&now, NULL); +#else + else { + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + } +#endif + return now; +} + +#elif defined(HAVE_GETTIMEOFDAY) + +struct timeval ares__tvnow(void) +{ + /* + ** gettimeofday() is not granted to be increased monotonically, due to + ** clock drifting and external source time synchronization it can jump + ** forward or backward in time. + */ + struct timeval now; + (void)gettimeofday(&now, NULL); + return now; +} + +#else + +struct timeval ares__tvnow(void) +{ + /* + ** time() returns the value of time in seconds since the Epoch. + */ + struct timeval now; + now.tv_sec = (long)time(NULL); + now.tv_usec = 0; + return now; +} + +#endif + +#if 0 /* Not used */ +/* + * Make sure that the first argument is the more recent time, as otherwise + * we'll get a weird negative time-diff back... + * + * Returns: the time difference in number of milliseconds. + */ +long ares__tvdiff(struct timeval newer, struct timeval older) +{ + return (newer.tv_sec-older.tv_sec)*1000+ + (newer.tv_usec-older.tv_usec)/1000; +} +#endif + diff --git a/3rdParty/CAres/src/ares_build.h b/3rdParty/CAres/src/ares_build.h new file mode 100644 index 0000000..bbbef1b --- /dev/null +++ b/3rdParty/CAres/src/ares_build.h @@ -0,0 +1,253 @@ +#ifndef __CARES_BUILD_H +#define __CARES_BUILD_H + +/* $Id: ares_build.h.dist,v 1.9 2009-05-12 01:57:53 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* NOTES FOR CONFIGURE CAPABLE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * See file ares_build.h.in, run configure, and forget that this file + * exists it is only used for non-configure systems. + * But you can keep reading if you want ;-) + * + */ + +/* ================================================================ */ +/* NOTES FOR NON-CONFIGURE SYSTEMS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * If you think that something actually needs to be changed, adjusted + * or fixed in this file, then, report it on the c-ares development + * mailing list: http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * Try to keep one section per platform, compiler and architecture, + * otherwise, if an existing section is reused for a different one and + * later on the original is adjusted, probably the piggybacking one can + * be adversely changed. + * + * In order to differentiate between platforms/compilers/architectures + * use only compiler built in predefined preprocessor symbols. + * + * This header file shall only export symbols which are 'cares' or 'CARES' + * prefixed, otherwise public name space would be polluted. + * + * NOTE 2: + * ------- + * + * Right now you might be staring at file ares_build.h.dist or ares_build.h, + * this is due to the following reason: file ares_build.h.dist is renamed + * to ares_build.h when the c-ares source code distribution archive file is + * created. + * + * File ares_build.h.dist is not included in the distribution archive. + * File ares_build.h is not present in the CVS tree. + * + * The distributed ares_build.h file is only intended to be used on systems + * which can not run the also distributed configure script. + * + * On systems capable of running the configure script, the configure process + * will overwrite the distributed ares_build.h file with one that is suitable + * and specific to the library being configured and built, which is generated + * from the ares_build.h.in template file. + * + * If you check out from CVS on a non-configure platform, you must run the + * appropriate buildconf* script to set up ares_build.h and other local files. + * + */ + +/* ================================================================ */ +/* DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE */ +/* ================================================================ */ + +#ifdef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_LONG_already_defined +#endif + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_already_defined +#endif + +#ifdef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T shall not be defined except in ares_build.h" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_already_defined +#endif + +/* ================================================================ */ +/* EXTERNAL INTERFACE SETTINGS FOR NON-CONFIGURE SYSTEMS ONLY */ +/* ================================================================ */ + +#if defined(__DJGPP__) || defined(__GO32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__SALFORDC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__BORLANDC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__TURBOC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__WATCOMC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__POCC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__LCC__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__SYMBIAN32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__MWERKS__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(_WIN32_WCE) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__MINGW32__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__VMS) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T unsigned int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +#elif defined(__OS400__) +# if defined(__ILEC400__) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(__MVS__) +# if defined(__IBMC__) || defined(__IBMCPP__) +# if defined(_ILP32) +# define CARES_SIZEOF_LONG 4 +# elif defined(_LP64) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(__370__) +# if defined(__IBMC__) || defined(__IBMCPP__) +# if defined(_ILP32) +# define CARES_SIZEOF_LONG 4 +# elif defined(_LP64) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 +# endif + +#elif defined(TPF) +# define CARES_SIZEOF_LONG 8 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +/* ===================================== */ +/* KEEP MSVC THE PENULTIMATE ENTRY */ +/* ===================================== */ + +#elif defined(_MSC_VER) +# define CARES_SIZEOF_LONG 4 +# define CARES_TYPEOF_ARES_SOCKLEN_T int +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 + +/* ===================================== */ +/* KEEP GENERIC GCC THE LAST ENTRY */ +/* ===================================== */ + +#elif defined(__GNUC__) +# if defined(__i386__) || defined(__ppc__) +# define CARES_SIZEOF_LONG 4 +# elif defined(__x86_64__) || defined(__ppc64__) +# define CARES_SIZEOF_LONG 8 +# endif +# define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t +# define CARES_SIZEOF_ARES_SOCKLEN_T 4 +# define CARES_PULL_SYS_TYPES_H 1 +# define CARES_PULL_SYS_SOCKET_H 1 + +#else +# error "Unknown non-configure build target!" + Error Compilation_aborted_Unknown_non_configure_build_target +#endif + +/* CARES_PULL_SYS_TYPES_H is defined above when inclusion of header file */ +/* sys/types.h is required here to properly make type definitions below. */ +#ifdef CARES_PULL_SYS_TYPES_H +# include <sys/types.h> +#endif + +/* CARES_PULL_SYS_SOCKET_H is defined above when inclusion of header file */ +/* sys/socket.h is required here to properly make type definitions below. */ +#ifdef CARES_PULL_SYS_SOCKET_H +# include <sys/socket.h> +#endif + +/* Data type definition of ares_socklen_t. */ + +#ifdef CARES_TYPEOF_ARES_SOCKLEN_T + typedef CARES_TYPEOF_ARES_SOCKLEN_T ares_socklen_t; +#endif + +#endif /* __CARES_BUILD_H */ diff --git a/3rdParty/CAres/src/ares_cancel.c b/3rdParty/CAres/src/ares_cancel.c new file mode 100644 index 0000000..9478085 --- /dev/null +++ b/3rdParty/CAres/src/ares_cancel.c @@ -0,0 +1,64 @@ +/* $Id: ares_cancel.c,v 1.12 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright (C) 2004 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <assert.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +/* + * ares_cancel() cancels all ongoing requests/resolves that might be going on + * on the given channel. It does NOT kill the channel, use ares_destroy() for + * that. + */ +void ares_cancel(ares_channel channel) +{ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + int i; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* since we're deleting the query */ + query->callback(query->arg, ARES_ECANCELLED, 0, NULL, 0); + ares__free_query(query); + } +#ifndef NDEBUG + /* Freeing the query should remove it from all the lists in which it sits, + * so all query lists should be empty now. + */ + assert(ares__is_list_empty(&(channel->all_queries))); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); + } +#endif + if (!(channel->flags & ARES_FLAG_STAYOPEN)) + { + if (channel->servers) + { + for (i = 0; i < channel->nservers; i++) + ares__close_sockets(channel, &channel->servers[i]); + } + } +} diff --git a/3rdParty/CAres/src/ares_config.h b/3rdParty/CAres/src/ares_config.h new file mode 100644 index 0000000..2561090 --- /dev/null +++ b/3rdParty/CAres/src/ares_config.h @@ -0,0 +1,513 @@ +/* ares_config.h. Generated from ares_config.h.in by configure. */ +/* ares_config.h.in. Generated from configure.ac by autoheader. */ + +/* Define if building universal (internal helper macro) */ +/* #undef AC_APPLE_UNIVERSAL_BUILD */ + +/* define this if ares is built for a big endian system */ +/* #undef ARES_BIG_ENDIAN */ + +/* when building as static part of libcurl */ +/* #undef BUILDING_LIBCURL */ + +/* when building c-ares library */ +/* #undef CARES_BUILDING_LIBRARY */ + +/* when not building a shared library */ +/* #undef CARES_STATICLIB */ + +/* Define to 1 to enable hiding of library internal symbols. */ +#define CARES_SYMBOL_HIDING 1 + +/* Definition to make a library symbol externally visible. */ +#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default"))) + +/* if a /etc/inet dir is being used */ +/* #undef ETC_INET */ + +/* Define to the type qualifier of arg 1 for getnameinfo. */ +#define GETNAMEINFO_QUAL_ARG1 const + +/* Define to the type of arg 1 for getnameinfo. */ +#define GETNAMEINFO_TYPE_ARG1 struct sockaddr * + +/* Define to the type of arg 2 for getnameinfo. */ +#define GETNAMEINFO_TYPE_ARG2 socklen_t + +/* Define to the type of args 4 and 6 for getnameinfo. */ +#define GETNAMEINFO_TYPE_ARG46 size_t + +/* Define to the type of arg 7 for getnameinfo. */ +#define GETNAMEINFO_TYPE_ARG7 unsigned int + +/* Specifies the number of arguments to getservbyport_r */ +#define GETSERVBYPORT_R_ARGS 6 + +/* Specifies the size of the buffer to pass to getservbyport_r */ +#define GETSERVBYPORT_R_BUFSIZE 4096 + +/* Define to 1 if you have AF_INET6. */ +#define HAVE_AF_INET6 1 + +/* Define to 1 if you have the <arpa/inet.h> header file. */ +#define HAVE_ARPA_INET_H 1 + +/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */ +#define HAVE_ARPA_NAMESER_COMPAT_H 1 + +/* Define to 1 if you have the <arpa/nameser.h> header file. */ +#define HAVE_ARPA_NAMESER_H 1 + +/* Define to 1 if you have the <assert.h> header file. */ +#define HAVE_ASSERT_H 1 + +/* Define to 1 if you have the `bitncmp' function. */ +/* #undef HAVE_BITNCMP */ + +/* Define to 1 if bool is an available type. */ +#define HAVE_BOOL_T 1 + +/* Define to 1 if you have the clock_gettime function and monotonic timer. */ +#define HAVE_CLOCK_GETTIME_MONOTONIC 1 + +/* Define to 1 if you have the closesocket function. */ +/* #undef HAVE_CLOSESOCKET */ + +/* Define to 1 if you have the CloseSocket camel case function. */ +/* #undef HAVE_CLOSESOCKET_CAMEL */ + +/* Define to 1 if you have the connect function. */ +#define HAVE_CONNECT 1 + +/* Define to 1 if you have the <dlfcn.h> header file. */ +#define HAVE_DLFCN_H 1 + +/* Define to 1 if you have the <errno.h> header file. */ +#define HAVE_ERRNO_H 1 + +/* Define to 1 if you have the fcntl function. */ +#define HAVE_FCNTL 1 + +/* Define to 1 if you have the <fcntl.h> header file. */ +#define HAVE_FCNTL_H 1 + +/* Define to 1 if you have a working fcntl O_NONBLOCK function. */ +#define HAVE_FCNTL_O_NONBLOCK 1 + +/* Define to 1 if you have the freeaddrinfo function. */ +#define HAVE_FREEADDRINFO 1 + +/* Define to 1 if you have a working getaddrinfo function. */ +#define HAVE_GETADDRINFO 1 + +/* Define to 1 if the getaddrinfo function is threadsafe. */ +#define HAVE_GETADDRINFO_THREADSAFE 1 + +/* Define to 1 if you have the gethostbyaddr function. */ +#define HAVE_GETHOSTBYADDR 1 + +/* Define to 1 if you have the gethostbyname function. */ +#define HAVE_GETHOSTBYNAME 1 + +/* Define to 1 if you have the gethostname function. */ +#define HAVE_GETHOSTNAME 1 + +/* Define to 1 if you have the getnameinfo function. */ +#define HAVE_GETNAMEINFO 1 + +/* Define to 1 if you have the getservbyport_r function. */ +#define HAVE_GETSERVBYPORT_R 1 + +/* Define to 1 if you have the `gettimeofday' function. */ +#define HAVE_GETTIMEOFDAY 1 + +/* Define to 1 if you have the `if_indextoname' function. */ +#define HAVE_IF_INDEXTONAME 1 + +/* Define to 1 if you have the `inet_net_pton' function. */ +/* #undef HAVE_INET_NET_PTON */ + +/* Define to 1 if inet_net_pton supports IPv6. */ +/* #undef HAVE_INET_NET_PTON_IPV6 */ + +/* Define to 1 if you have a IPv6 capable working inet_ntop function. */ +#define HAVE_INET_NTOP 1 + +/* Define to 1 if you have a IPv6 capable working inet_pton function. */ +#define HAVE_INET_PTON 1 + +/* Define to 1 if you have the <inttypes.h> header file. */ +#define HAVE_INTTYPES_H 1 + +/* Define to 1 if you have the ioctl function. */ +#define HAVE_IOCTL 1 + +/* Define to 1 if you have the ioctlsocket function. */ +/* #undef HAVE_IOCTLSOCKET */ + +/* Define to 1 if you have the IoctlSocket camel case function. */ +/* #undef HAVE_IOCTLSOCKET_CAMEL */ + +/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function. + */ +/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */ + +/* Define to 1 if you have a working ioctlsocket FIONBIO function. */ +/* #undef HAVE_IOCTLSOCKET_FIONBIO */ + +/* Define to 1 if you have a working ioctl FIONBIO function. */ +#define HAVE_IOCTL_FIONBIO 1 + +/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */ +#define HAVE_IOCTL_SIOCGIFADDR 1 + +/* Define to 1 if you have the `resolve' library (-lresolve). */ +/* #undef HAVE_LIBRESOLVE */ + +/* Define to 1 if you have the <limits.h> header file. */ +#define HAVE_LIMITS_H 1 + +/* if your compiler supports LL */ +#define HAVE_LL 1 + +/* Define to 1 if the compiler supports the 'long long' data type. */ +#define HAVE_LONGLONG 1 + +/* Define to 1 if you have the malloc.h header file. */ +#define HAVE_MALLOC_H 1 + +/* Define to 1 if you have the memory.h header file. */ +#define HAVE_MEMORY_H 1 + +/* Define to 1 if you have the MSG_NOSIGNAL flag. */ +#define HAVE_MSG_NOSIGNAL 1 + +/* Define to 1 if you have the <netdb.h> header file. */ +#define HAVE_NETDB_H 1 + +/* Define to 1 if you have the <netinet/in.h> header file. */ +#define HAVE_NETINET_IN_H 1 + +/* Define to 1 if you have the <netinet/tcp.h> header file. */ +#define HAVE_NETINET_TCP_H 1 + +/* Define to 1 if you have the <net/if.h> header file. */ +#define HAVE_NET_IF_H 1 + +/* Define to 1 if you have PF_INET6. */ +#define HAVE_PF_INET6 1 + +/* Define to 1 if you have the recv function. */ +#define HAVE_RECV 1 + +/* Define to 1 if you have the recvfrom function. */ +#define HAVE_RECVFROM 1 + +/* Define to 1 if you have the send function. */ +#define HAVE_SEND 1 + +/* Define to 1 if you have the setsockopt function. */ +#define HAVE_SETSOCKOPT 1 + +/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */ +/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */ + +/* Define to 1 if you have the <signal.h> header file. */ +#define HAVE_SIGNAL_H 1 + +/* Define to 1 if sig_atomic_t is an available typedef. */ +#define HAVE_SIG_ATOMIC_T 1 + +/* Define to 1 if sig_atomic_t is already defined as volatile. */ +/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */ + +/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */ +#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 + +/* Define to 1 if you have the socket function. */ +#define HAVE_SOCKET 1 + +/* Define to 1 if you have the <socket.h> header file. */ +/* #undef HAVE_SOCKET_H */ + +/* Define to 1 if you have the <stdbool.h> header file. */ +#define HAVE_STDBOOL_H 1 + +/* Define to 1 if you have the <stdint.h> header file. */ +#define HAVE_STDINT_H 1 + +/* Define to 1 if you have the <stdlib.h> header file. */ +#define HAVE_STDLIB_H 1 + +/* Define to 1 if you have the strcasecmp function. */ +#define HAVE_STRCASECMP 1 + +/* Define to 1 if you have the strcmpi function. */ +/* #undef HAVE_STRCMPI */ + +/* Define to 1 if you have the strdup function. */ +#define HAVE_STRDUP 1 + +/* Define to 1 if you have the stricmp function. */ +/* #undef HAVE_STRICMP */ + +/* Define to 1 if you have the <strings.h> header file. */ +#define HAVE_STRINGS_H 1 + +/* Define to 1 if you have the <string.h> header file. */ +#define HAVE_STRING_H 1 + +/* Define to 1 if you have the strncasecmp function. */ +#define HAVE_STRNCASECMP 1 + +/* Define to 1 if you have the strncmpi function. */ +/* #undef HAVE_STRNCMPI */ + +/* Define to 1 if you have the strnicmp function. */ +/* #undef HAVE_STRNICMP */ + +/* Define to 1 if you have the <stropts.h> header file. */ +#define HAVE_STROPTS_H 1 + +/* Define to 1 if you have struct addrinfo. */ +#define HAVE_STRUCT_ADDRINFO 1 + +/* Define to 1 if you have struct in6_addr. */ +#define HAVE_STRUCT_IN6_ADDR 1 + +/* Define to 1 if you have struct sockaddr_in6. */ +#define HAVE_STRUCT_SOCKADDR_IN6 1 + +/* if struct sockaddr_storage is defined */ +#define HAVE_STRUCT_SOCKADDR_STORAGE 1 + +/* Define to 1 if you have the timeval struct. */ +#define HAVE_STRUCT_TIMEVAL 1 + +/* Define to 1 if you have the <sys/ioctl.h> header file. */ +#define HAVE_SYS_IOCTL_H 1 + +/* Define to 1 if you have the <sys/param.h> header file. */ +#define HAVE_SYS_PARAM_H 1 + +/* Define to 1 if you have the <sys/select.h> header file. */ +#define HAVE_SYS_SELECT_H 1 + +/* Define to 1 if you have the <sys/socket.h> header file. */ +#define HAVE_SYS_SOCKET_H 1 + +/* Define to 1 if you have the <sys/stat.h> header file. */ +#define HAVE_SYS_STAT_H 1 + +/* Define to 1 if you have the <sys/time.h> header file. */ +#define HAVE_SYS_TIME_H 1 + +/* Define to 1 if you have the <sys/types.h> header file. */ +#define HAVE_SYS_TYPES_H 1 + +/* Define to 1 if you have the <sys/uio.h> header file. */ +#define HAVE_SYS_UIO_H 1 + +/* Define to 1 if you have the <time.h> header file. */ +#define HAVE_TIME_H 1 + +/* Define to 1 if you have the <unistd.h> header file. */ +#define HAVE_UNISTD_H 1 + +/* Define to 1 if you have the windows.h header file. */ +/* #undef HAVE_WINDOWS_H */ + +/* Define to 1 if you have the winsock2.h header file. */ +/* #undef HAVE_WINSOCK2_H */ + +/* Define to 1 if you have the winsock.h header file. */ +/* #undef HAVE_WINSOCK_H */ + +/* Define to 1 if you have the writev function. */ +#define HAVE_WRITEV 1 + +/* Define to 1 if you have the ws2tcpip.h header file. */ +/* #undef HAVE_WS2TCPIP_H */ + +/* Define to the sub-directory in which libtool stores uninstalled libraries. + */ +#define LT_OBJDIR ".libs/" + +/* Define to 1 if you are building a native Windows target. */ +/* #undef NATIVE_WINDOWS */ + +/* Define to 1 if you need the malloc.h header file even with stdlib.h */ +/* #undef NEED_MALLOC_H */ + +/* Define to 1 if you need the memory.h header file even with stdlib.h */ +/* #undef NEED_MEMORY_H */ + +/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */ +/* #undef NEED_REENTRANT */ + +/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */ +/* #undef NEED_THREAD_SAFE */ + +/* Define to 1 if your C compiler doesn't accept -c and -o together. */ +/* #undef NO_MINUS_C_MINUS_O */ + +/* cpu-machine-OS */ +#define OS "i686-pc-linux-gnu" + +/* Name of package */ +#define PACKAGE "c-ares" + +/* Define to the address where bug reports for this package should be sent. */ +#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares" + +/* Define to the full name of this package. */ +#define PACKAGE_NAME "c-ares" + +/* Define to the full name and version of this package. */ +#define PACKAGE_STRING "c-ares 1.7.0" + +/* Define to the one symbol short name of this package. */ +#define PACKAGE_TARNAME "c-ares" + +/* Define to the home page for this package. */ +#define PACKAGE_URL "" + +/* Define to the version of this package. */ +#define PACKAGE_VERSION "1.7.0" + +/* a suitable file/device to read random data from */ +#define RANDOM_FILE "/dev/urandom" + +/* Define to the type of arg 1 for recvfrom. */ +#define RECVFROM_TYPE_ARG1 int + +/* Define to the type pointed by arg 2 for recvfrom. */ +#define RECVFROM_TYPE_ARG2 void + +/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */ +#define RECVFROM_TYPE_ARG2_IS_VOID 1 + +/* Define to the type of arg 3 for recvfrom. */ +#define RECVFROM_TYPE_ARG3 size_t + +/* Define to the type of arg 4 for recvfrom. */ +#define RECVFROM_TYPE_ARG4 int + +/* Define to the type pointed by arg 5 for recvfrom. */ +#define RECVFROM_TYPE_ARG5 struct sockaddr + +/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */ +/* #undef RECVFROM_TYPE_ARG5_IS_VOID */ + +/* Define to the type pointed by arg 6 for recvfrom. */ +#define RECVFROM_TYPE_ARG6 socklen_t + +/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */ +/* #undef RECVFROM_TYPE_ARG6_IS_VOID */ + +/* Define to the function return type for recvfrom. */ +#define RECVFROM_TYPE_RETV int + +/* Define to the type of arg 1 for recv. */ +#define RECV_TYPE_ARG1 int + +/* Define to the type of arg 2 for recv. */ +#define RECV_TYPE_ARG2 void * + +/* Define to the type of arg 3 for recv. */ +#define RECV_TYPE_ARG3 size_t + +/* Define to the type of arg 4 for recv. */ +#define RECV_TYPE_ARG4 int + +/* Define to the function return type for recv. */ +#define RECV_TYPE_RETV int + +/* Define as the return type of signal handlers (`int' or `void'). */ +#define RETSIGTYPE void + +/* Define to the type qualifier of arg 2 for send. */ +#define SEND_QUAL_ARG2 const + +/* Define to the type of arg 1 for send. */ +#define SEND_TYPE_ARG1 int + +/* Define to the type of arg 2 for send. */ +#define SEND_TYPE_ARG2 void * + +/* Define to the type of arg 3 for send. */ +#define SEND_TYPE_ARG3 size_t + +/* Define to the type of arg 4 for send. */ +#define SEND_TYPE_ARG4 int + +/* Define to the function return type for send. */ +#define SEND_TYPE_RETV int + +/* The size of `int', as computed by sizeof. */ +#define SIZEOF_INT 4 + +/* The size of `long', as computed by sizeof. */ +#define SIZEOF_LONG 4 + +/* The size of `size_t', as computed by sizeof. */ +#define SIZEOF_SIZE_T 4 + +/* The size of `struct in6_addr', as computed by sizeof. */ +#define SIZEOF_STRUCT_IN6_ADDR 16 + +/* The size of `struct in_addr', as computed by sizeof. */ +#define SIZEOF_STRUCT_IN_ADDR 4 + +/* The size of `time_t', as computed by sizeof. */ +#define SIZEOF_TIME_T 4 + +/* Define to 1 if you have the ANSI C header files. */ +#define STDC_HEADERS 1 + +/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */ +#define TIME_WITH_SYS_TIME 1 + +/* Define to disable non-blocking sockets. */ +/* #undef USE_BLOCKING_SOCKETS */ + +/* Version number of package */ +#define VERSION "1.7.0" + +/* Define to avoid automatic inclusion of winsock.h */ +/* #undef WIN32_LEAN_AND_MEAN */ + +/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most + significant byte first (like Motorola and SPARC, unlike Intel). */ +#if defined AC_APPLE_UNIVERSAL_BUILD +# if defined __BIG_ENDIAN__ +# define WORDS_BIGENDIAN 1 +# endif +#else +# ifndef WORDS_BIGENDIAN +/* # undef WORDS_BIGENDIAN */ +# endif +#endif + +/* Define to 1 if OS is AIX. */ +#ifndef _ALL_SOURCE +/* # undef _ALL_SOURCE */ +#endif + +/* Number of bits in a file offset, on hosts where this is settable. */ +#define _FILE_OFFSET_BITS 64 + +/* Define for large files, on AIX-style hosts. */ +/* #undef _LARGE_FILES */ + +/* Define to empty if `const' does not conform to ANSI C. */ +/* #undef const */ + +/* Type to use in place of in_addr_t when system does not provide it. */ +/* #undef in_addr_t */ + +/* Define to `unsigned int' if <sys/types.h> does not define. */ +/* #undef size_t */ + +/* the signed version of size_t */ +/* #undef ssize_t */ diff --git a/3rdParty/CAres/src/ares_data.c b/3rdParty/CAres/src/ares_data.c new file mode 100644 index 0000000..1ad66a6 --- /dev/null +++ b/3rdParty/CAres/src/ares_data.c @@ -0,0 +1,143 @@ +/* $Id: ares_data.c,v 1.2 2009-11-20 09:06:33 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + + +#include "ares_setup.h" + +#include <stddef.h> + +#include "ares.h" +#include "ares_data.h" +#include "ares_private.h" + + +/* +** ares_free_data() - c-ares external API function. +** +** This function must be used by the application to free data memory that +** has been internally allocated by some c-ares function and for which a +** pointer has already been returned to the calling application. The list +** of c-ares functions returning pointers that must be free'ed using this +** function is: +** +** ares_parse_srv_reply() +** ares_parse_txt_reply() +*/ + +void ares_free_data(void *dataptr) +{ + struct ares_data *ptr; + + if (!dataptr) + return; + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + + if (ptr->mark != ARES_DATATYPE_MARK) + return; + + switch (ptr->type) + { + case ARES_DATATYPE_SRV_REPLY: + + if (ptr->data.srv_reply.next) + ares_free_data(ptr->data.srv_reply.next); + if (ptr->data.srv_reply.host) + free(ptr->data.srv_reply.host); + break; + + case ARES_DATATYPE_TXT_REPLY: + + if (ptr->data.txt_reply.next) + ares_free_data(ptr->data.txt_reply.next); + if (ptr->data.txt_reply.txt) + free(ptr->data.txt_reply.txt); + break; + + default: + return; + } + + free(ptr); +} + + +/* +** ares_malloc_data() - c-ares internal helper function. +** +** This function allocates memory for a c-ares private ares_data struct +** for the specified ares_datatype, initializes c-ares private fields +** and zero initializes those which later might be used from the public +** API. It returns an interior pointer which can be passed by c-ares +** functions to the calling application, and that must be free'ed using +** c-ares external API function ares_free_data(). +*/ + +void *ares_malloc_data(ares_datatype type) +{ + struct ares_data *ptr; + + ptr = malloc(sizeof(struct ares_data)); + if (!ptr) + return NULL; + + switch (type) + { + case ARES_DATATYPE_SRV_REPLY: + ptr->data.srv_reply.next = NULL; + ptr->data.srv_reply.host = NULL; + ptr->data.srv_reply.priority = 0; + ptr->data.srv_reply.weight = 0; + ptr->data.srv_reply.port = 0; + break; + + case ARES_DATATYPE_TXT_REPLY: + ptr->data.txt_reply.next = NULL; + ptr->data.txt_reply.txt = NULL; + ptr->data.txt_reply.length = 0; + break; + + default: + free(ptr); + return NULL; + } + + ptr->mark = ARES_DATATYPE_MARK; + ptr->type = type; + + return &ptr->data; +} + + +/* +** ares_get_datatype() - c-ares internal helper function. +** +** This function returns the ares_datatype of the data stored in a +** private ares_data struct when given the public API pointer. +*/ + +ares_datatype ares_get_datatype(void * dataptr) +{ + struct ares_data *ptr; + + ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data)); + + if (ptr->mark == ARES_DATATYPE_MARK) + return ptr->type; + + return ARES_DATATYPE_UNKNOWN; +} diff --git a/3rdParty/CAres/src/ares_data.h b/3rdParty/CAres/src/ares_data.h new file mode 100644 index 0000000..18794e3 --- /dev/null +++ b/3rdParty/CAres/src/ares_data.h @@ -0,0 +1,62 @@ +/* $Id: ares_data.h,v 1.2 2009-11-23 12:03:33 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +typedef enum { + ARES_DATATYPE_UNKNOWN = 1, /* unknown data type - introduced in 1.7.0 */ + ARES_DATATYPE_SRV_REPLY, /* struct ares_srv_reply - introduced in 1.7.0 */ + ARES_DATATYPE_TXT_REPLY, /* struct ares_txt_reply - introduced in 1.7.0 */ +#if 0 + ARES_DATATYPE_ADDR6TTL, /* struct ares_addrttl */ + ARES_DATATYPE_ADDRTTL, /* struct ares_addr6ttl */ + ARES_DATATYPE_HOSTENT, /* struct hostent */ + ARES_DATATYPE_OPTIONS, /* struct ares_options */ +#endif + ARES_DATATYPE_LAST /* not used - introduced in 1.7.0 */ +} ares_datatype; + +#define ARES_DATATYPE_MARK 0xbead + +/* + * ares_data struct definition is internal to c-ares and shall not + * be exposed by the public API in order to allow future changes + * and extensions to it without breaking ABI. This will be used + * internally by c-ares as the container of multiple types of data + * dynamically allocated for which a reference will be returned + * to the calling application. + * + * c-ares API functions returning a pointer to c-ares internally + * allocated data will actually be returning an interior pointer + * into this ares_data struct. + * + * All this is 'invisible' to the calling application, the only + * requirement is that this kind of data must be free'ed by the + * calling application using ares_free_data() with the pointer + * it has received from a previous c-ares function call. + */ + +struct ares_data { + ares_datatype type; /* Actual data type identifier. */ + unsigned int mark; /* Private ares_data signature. */ + union { + struct ares_txt_reply txt_reply; + struct ares_srv_reply srv_reply; + } data; +}; + +void *ares_malloc_data(ares_datatype type); + +ares_datatype ares_get_datatype(void * dataptr); diff --git a/3rdParty/CAres/src/ares_destroy.c b/3rdParty/CAres/src/ares_destroy.c new file mode 100644 index 0000000..0044a71 --- /dev/null +++ b/3rdParty/CAres/src/ares_destroy.c @@ -0,0 +1,93 @@ +/* $Id: ares_destroy.c,v 1.14 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <assert.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +void ares_destroy_options(struct ares_options *options) +{ + int i; + + free(options->servers); + for (i = 0; i < options->ndomains; i++) + free(options->domains[i]); + free(options->domains); + if(options->sortlist) + free(options->sortlist); + free(options->lookups); +} + +void ares_destroy(ares_channel channel) +{ + int i; + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + if (!channel) + return; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* since we're deleting the query */ + query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0); + ares__free_query(query); + } +#ifndef NDEBUG + /* Freeing the query should remove it from all the lists in which it sits, + * so all query lists should be empty now. + */ + assert(ares__is_list_empty(&(channel->all_queries))); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_qid[i]))); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + assert(ares__is_list_empty(&(channel->queries_by_timeout[i]))); + } +#endif + + if (channel->servers) { + for (i = 0; i < channel->nservers; i++) + { + struct server_state *server = &channel->servers[i]; + ares__close_sockets(channel, server); + assert(ares__is_list_empty(&(server->queries_to_server))); + } + free(channel->servers); + } + + if (channel->domains) { + for (i = 0; i < channel->ndomains; i++) + free(channel->domains[i]); + free(channel->domains); + } + + if(channel->sortlist) + free(channel->sortlist); + + if (channel->lookups) + free(channel->lookups); + + free(channel); +} diff --git a/3rdParty/CAres/src/ares_dns.h b/3rdParty/CAres/src/ares_dns.h new file mode 100644 index 0000000..c0a9dda --- /dev/null +++ b/3rdParty/CAres/src/ares_dns.h @@ -0,0 +1,91 @@ +/* $Id: ares_dns.h,v 1.8 2007-02-16 14:22:08 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef ARES__DNS_H +#define ARES__DNS_H + +#define DNS__16BIT(p) (((p)[0] << 8) | (p)[1]) +#define DNS__32BIT(p) (((p)[0] << 24) | ((p)[1] << 16) | \ + ((p)[2] << 8) | (p)[3]) + +#define DNS__SET16BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 8) & 0xff)), \ + ((p)[1] = (unsigned char)((v) & 0xff))) +#define DNS__SET32BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 24) & 0xff)), \ + ((p)[1] = (unsigned char)(((v) >> 16) & 0xff)), \ + ((p)[2] = (unsigned char)(((v) >> 8) & 0xff)), \ + ((p)[3] = (unsigned char)((v) & 0xff))) + +#if 0 +/* we cannot use this approach on systems where we can't access 16/32 bit + data on un-aligned addresses */ +#define DNS__16BIT(p) ntohs(*(unsigned short*)(p)) +#define DNS__32BIT(p) ntohl(*(unsigned long*)(p)) +#define DNS__SET16BIT(p, v) *(unsigned short*)(p) = htons(v) +#define DNS__SET32BIT(p, v) *(unsigned long*)(p) = htonl(v) +#endif + +/* Macros for parsing a DNS header */ +#define DNS_HEADER_QID(h) DNS__16BIT(h) +#define DNS_HEADER_QR(h) (((h)[2] >> 7) & 0x1) +#define DNS_HEADER_OPCODE(h) (((h)[2] >> 3) & 0xf) +#define DNS_HEADER_AA(h) (((h)[2] >> 2) & 0x1) +#define DNS_HEADER_TC(h) (((h)[2] >> 1) & 0x1) +#define DNS_HEADER_RD(h) ((h)[2] & 0x1) +#define DNS_HEADER_RA(h) (((h)[3] >> 7) & 0x1) +#define DNS_HEADER_Z(h) (((h)[3] >> 4) & 0x7) +#define DNS_HEADER_RCODE(h) ((h)[3] & 0xf) +#define DNS_HEADER_QDCOUNT(h) DNS__16BIT((h) + 4) +#define DNS_HEADER_ANCOUNT(h) DNS__16BIT((h) + 6) +#define DNS_HEADER_NSCOUNT(h) DNS__16BIT((h) + 8) +#define DNS_HEADER_ARCOUNT(h) DNS__16BIT((h) + 10) + +/* Macros for constructing a DNS header */ +#define DNS_HEADER_SET_QID(h, v) DNS__SET16BIT(h, v) +#define DNS_HEADER_SET_QR(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 7)) +#define DNS_HEADER_SET_OPCODE(h, v) ((h)[2] |= (unsigned char)(((v) & 0xf) << 3)) +#define DNS_HEADER_SET_AA(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 2)) +#define DNS_HEADER_SET_TC(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 1)) +#define DNS_HEADER_SET_RD(h, v) ((h)[2] |= (unsigned char)((v) & 0x1)) +#define DNS_HEADER_SET_RA(h, v) ((h)[3] |= (unsigned char)(((v) & 0x1) << 7)) +#define DNS_HEADER_SET_Z(h, v) ((h)[3] |= (unsigned char)(((v) & 0x7) << 4)) +#define DNS_HEADER_SET_RCODE(h, v) ((h)[3] |= (unsigned char)((v) & 0xf)) +#define DNS_HEADER_SET_QDCOUNT(h, v) DNS__SET16BIT((h) + 4, v) +#define DNS_HEADER_SET_ANCOUNT(h, v) DNS__SET16BIT((h) + 6, v) +#define DNS_HEADER_SET_NSCOUNT(h, v) DNS__SET16BIT((h) + 8, v) +#define DNS_HEADER_SET_ARCOUNT(h, v) DNS__SET16BIT((h) + 10, v) + +/* Macros for parsing the fixed part of a DNS question */ +#define DNS_QUESTION_TYPE(q) DNS__16BIT(q) +#define DNS_QUESTION_CLASS(q) DNS__16BIT((q) + 2) + +/* Macros for constructing the fixed part of a DNS question */ +#define DNS_QUESTION_SET_TYPE(q, v) DNS__SET16BIT(q, v) +#define DNS_QUESTION_SET_CLASS(q, v) DNS__SET16BIT((q) + 2, v) + +/* Macros for parsing the fixed part of a DNS resource record */ +#define DNS_RR_TYPE(r) DNS__16BIT(r) +#define DNS_RR_CLASS(r) DNS__16BIT((r) + 2) +#define DNS_RR_TTL(r) DNS__32BIT((r) + 4) +#define DNS_RR_LEN(r) DNS__16BIT((r) + 8) + +/* Macros for constructing the fixed part of a DNS resource record */ +#define DNS_RR_SET_TYPE(r) DNS__SET16BIT(r, v) +#define DNS_RR_SET_CLASS(r) DNS__SET16BIT((r) + 2, v) +#define DNS_RR_SET_TTL(r) DNS__SET32BIT((r) + 4, v) +#define DNS_RR_SET_LEN(r) DNS__SET16BIT((r) + 8, v) + +#endif /* ARES__DNS_H */ diff --git a/3rdParty/CAres/src/ares_expand_name.c b/3rdParty/CAres/src/ares_expand_name.c new file mode 100644 index 0000000..75e88e8 --- /dev/null +++ b/3rdParty/CAres/src/ares_expand_name.c @@ -0,0 +1,190 @@ +/* $Id: ares_expand_name.c,v 1.20 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" /* for the memdebug */ + +static int name_length(const unsigned char *encoded, const unsigned char *abuf, + int alen); + +/* Expand an RFC1035-encoded domain name given by encoded. The + * containing message is given by abuf and alen. The result given by + * *s, which is set to a NUL-terminated allocated buffer. *enclen is + * set to the length of the encoded name (not the length of the + * expanded name; the goal is to tell the caller how many bytes to + * move forward to get past the encoded name). + * + * In the simple case, an encoded name is a series of labels, each + * composed of a one-byte length (limited to values between 0 and 63 + * inclusive) followed by the label contents. The name is terminated + * by a zero-length label. + * + * In the more complicated case, a label may be terminated by an + * indirection pointer, specified by two bytes with the high bits of + * the first byte (corresponding to INDIR_MASK) set to 11. With the + * two high bits of the first byte stripped off, the indirection + * pointer gives an offset from the beginning of the containing + * message with more labels to decode. Indirection can happen an + * arbitrary number of times, so we have to detect loops. + * + * Since the expanded name uses '.' as a label separator, we use + * backslashes to escape periods or backslashes in the expanded name. + */ + +int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf, + int alen, char **s, long *enclen) +{ + int len, indir = 0; + char *q; + const unsigned char *p; + + len = name_length(encoded, abuf, alen); + if (len < 0) + return ARES_EBADNAME; + + *s = malloc(((size_t)len) + 1); + if (!*s) + return ARES_ENOMEM; + q = *s; + + if (len == 0) { + /* RFC2181 says this should be ".": the root of the DNS tree. + * Since this function strips trailing dots though, it becomes "" + */ + q[0] = '\0'; + *enclen = 1; /* the caller should move one byte to get past this */ + return ARES_SUCCESS; + } + + /* No error-checking necessary; it was all done by name_length(). */ + p = encoded; + while (*p) + { + if ((*p & INDIR_MASK) == INDIR_MASK) + { + if (!indir) + { + *enclen = p + 2 - encoded; + indir = 1; + } + p = abuf + ((*p & ~INDIR_MASK) << 8 | *(p + 1)); + } + else + { + len = *p; + p++; + while (len--) + { + if (*p == '.' || *p == '\\') + *q++ = '\\'; + *q++ = *p; + p++; + } + *q++ = '.'; + } + } + if (!indir) + *enclen = p + 1 - encoded; + + /* Nuke the trailing period if we wrote one. */ + if (q > *s) + *(q - 1) = 0; + else + *q = 0; /* zero terminate */ + + return ARES_SUCCESS; +} + +/* Return the length of the expansion of an encoded domain name, or + * -1 if the encoding is invalid. + */ +static int name_length(const unsigned char *encoded, const unsigned char *abuf, + int alen) +{ + int n = 0, offset, indir = 0; + + /* Allow the caller to pass us abuf + alen and have us check for it. */ + if (encoded == abuf + alen) + return -1; + + while (*encoded) + { + if ((*encoded & INDIR_MASK) == INDIR_MASK) + { + /* Check the offset and go there. */ + if (encoded + 1 >= abuf + alen) + return -1; + offset = (*encoded & ~INDIR_MASK) << 8 | *(encoded + 1); + if (offset >= alen) + return -1; + encoded = abuf + offset; + + /* If we've seen more indirects than the message length, + * then there's a loop. + */ + if (++indir > alen) + return -1; + } + else + { + offset = *encoded; + if (encoded + offset + 1 >= abuf + alen) + return -1; + encoded++; + while (offset--) + { + n += (*encoded == '.' || *encoded == '\\') ? 2 : 1; + encoded++; + } + n++; + } + } + + /* If there were any labels at all, then the number of dots is one + * less than the number of labels, so subtract one. + */ + return (n) ? n - 1 : n; +} + +/* Like ares_expand_name but returns EBADRESP in case of invalid input. */ +int ares__expand_name_for_response(const unsigned char *encoded, + const unsigned char *abuf, int alen, + char **s, long *enclen) +{ + int status = ares_expand_name(encoded, abuf, alen, s, enclen); + if (status == ARES_EBADNAME) + status = ARES_EBADRESP; + return status; +} diff --git a/3rdParty/CAres/src/ares_expand_string.c b/3rdParty/CAres/src/ares_expand_string.c new file mode 100644 index 0000000..c72bb62 --- /dev/null +++ b/3rdParty/CAres/src/ares_expand_string.c @@ -0,0 +1,72 @@ +/* $Id: ares_expand_string.c,v 1.10 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif + +#include <string.h> +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" /* for the memdebug */ + +/* Simply decodes a length-encoded character string. The first byte of the + * input is the length of the string to be returned and the bytes thereafter + * are the characters of the string. The returned result will be NULL + * terminated. + */ +int ares_expand_string(const unsigned char *encoded, + const unsigned char *abuf, + int alen, + unsigned char **s, + long *enclen) +{ + unsigned char *q; + long len; + if (encoded == abuf+alen) + return ARES_EBADSTR; + + len = *encoded; + if (encoded+len+1 > abuf+alen) + return ARES_EBADSTR; + + encoded++; + + *s = malloc(len+1); + if (*s == NULL) + return ARES_ENOMEM; + q = *s; + strncpy((char *)q, (char *)encoded, len); + q[len] = '\0'; + + *s = q; + + *enclen = len+1; + + return ARES_SUCCESS; +} + diff --git a/3rdParty/CAres/src/ares_fds.c b/3rdParty/CAres/src/ares_fds.c new file mode 100644 index 0000000..6ffe9c7 --- /dev/null +++ b/3rdParty/CAres/src/ares_fds.c @@ -0,0 +1,63 @@ +/* $Id: ares_fds.c,v 1.12 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds) +{ + struct server_state *server; + ares_socket_t nfds; + int i; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + nfds = 0; + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + FD_SET(server->udp_socket, read_fds); + if (server->udp_socket >= nfds) + nfds = server->udp_socket + 1; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + FD_SET(server->tcp_socket, read_fds); + if (server->qhead) + FD_SET(server->tcp_socket, write_fds); + if (server->tcp_socket >= nfds) + nfds = server->tcp_socket + 1; + } + } + return (int)nfds; +} diff --git a/3rdParty/CAres/src/ares_free_hostent.c b/3rdParty/CAres/src/ares_free_hostent.c new file mode 100644 index 0000000..c0794ee --- /dev/null +++ b/3rdParty/CAres/src/ares_free_hostent.c @@ -0,0 +1,40 @@ +/* $Id: ares_free_hostent.c,v 1.12 2009-11-09 12:56:50 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdlib.h> + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#include "ares.h" +#include "ares_private.h" /* for memdebug */ + +void ares_free_hostent(struct hostent *host) +{ + char **p; + + free((char *)(host->h_name)); + for (p = host->h_aliases; *p; p++) + free(*p); + free(host->h_aliases); + free(host->h_addr_list[0]); /* no matter if there is one or many entries, + there is only one malloc for all of them */ + free(host->h_addr_list); + free(host); +} diff --git a/3rdParty/CAres/src/ares_free_string.c b/3rdParty/CAres/src/ares_free_string.c new file mode 100644 index 0000000..38f98f9 --- /dev/null +++ b/3rdParty/CAres/src/ares_free_string.c @@ -0,0 +1,26 @@ +/* $Id: ares_free_string.c,v 1.7 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 2000 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <stdlib.h> +#include "ares.h" +#include "ares_private.h" + +void ares_free_string(void *str) +{ + free(str); +} diff --git a/3rdParty/CAres/src/ares_gethostbyaddr.c b/3rdParty/CAres/src/ares_gethostbyaddr.c new file mode 100644 index 0000000..732a031 --- /dev/null +++ b/3rdParty/CAres/src/ares_gethostbyaddr.c @@ -0,0 +1,291 @@ +/* $Id: ares_gethostbyaddr.c,v 1.35 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 +#endif + +struct addr_query { + /* Arguments passed to ares_gethostbyaddr() */ + ares_channel channel; + struct ares_addr addr; + ares_host_callback callback; + void *arg; + + const char *remaining_lookups; + int timeouts; +}; + +static void next_lookup(struct addr_query *aquery); +static void addr_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_aquery(struct addr_query *aquery, int status, + struct hostent *host); +static int file_lookup(struct ares_addr *addr, struct hostent **host); +static void ptr_rr_name(char *name, const struct ares_addr *addr); + +void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen, + int family, ares_host_callback callback, void *arg) +{ + struct addr_query *aquery; + + if (family != AF_INET && family != AF_INET6) + { + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + if ((family == AF_INET && addrlen != sizeof(struct in_addr)) || + (family == AF_INET6 && addrlen != sizeof(struct in6_addr))) + { + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + aquery = malloc(sizeof(struct addr_query)); + if (!aquery) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + aquery->channel = channel; + if (family == AF_INET) + memcpy(&aquery->addr.addrV4, addr, sizeof(struct in_addr)); + else + memcpy(&aquery->addr.addrV6, addr, sizeof(struct in6_addr)); + aquery->addr.family = family; + aquery->callback = callback; + aquery->arg = arg; + aquery->remaining_lookups = channel->lookups; + aquery->timeouts = 0; + + next_lookup(aquery); +} + +static void next_lookup(struct addr_query *aquery) +{ + const char *p; + char name[128]; + int status; + struct hostent *host; + + for (p = aquery->remaining_lookups; *p; p++) + { + switch (*p) + { + case 'b': + ptr_rr_name(name, &aquery->addr); + aquery->remaining_lookups = p + 1; + ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback, + aquery); + return; + case 'f': + status = file_lookup(&aquery->addr, &host); + + /* this status check below previously checked for !ARES_ENOTFOUND, + but we should not assume that this single error code is the one + that can occur, as that is in fact no longer the case */ + if (status == ARES_SUCCESS) + { + end_aquery(aquery, status, host); + return; + } + break; + } + } + end_aquery(aquery, ARES_ENOTFOUND, NULL); +} + +static void addr_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct addr_query *aquery = (struct addr_query *) arg; + struct hostent *host; + size_t addrlen; + + aquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + if (aquery->addr.family == AF_INET) + { + addrlen = sizeof(struct in_addr); + status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV4, + (int)addrlen, AF_INET, &host); + } + else + { + addrlen = sizeof(struct in6_addr); + status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV6, + (int)addrlen, AF_INET6, &host); + } + end_aquery(aquery, status, host); + } + else if (status == ARES_EDESTRUCTION) + end_aquery(aquery, status, NULL); + else + next_lookup(aquery); +} + +static void end_aquery(struct addr_query *aquery, int status, + struct hostent *host) +{ + aquery->callback(aquery->arg, status, aquery->timeouts, host); + if (host) + ares_free_hostent(host); + free(aquery); +} + +static int file_lookup(struct ares_addr *addr, struct hostent **host) +{ + FILE *fp; + int status; + int error; + +#ifdef WIN32 + char PATH_HOSTS[MAX_PATH]; + if (IS_NT()) { + char tmp[MAX_PATH]; + HKEY hkeyHosts; + + if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts) + == ERROR_SUCCESS) + { + DWORD dwLength = MAX_PATH; + RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, + &dwLength); + ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); + RegCloseKey(hkeyHosts); + } + } + else + GetWindowsDirectory(PATH_HOSTS, MAX_PATH); + + strcat(PATH_HOSTS, WIN_PATH_HOSTS); + +#elif defined(WATT32) + extern const char *_w32_GetHostsFile (void); + const char *PATH_HOSTS = _w32_GetHostsFile(); + + if (!PATH_HOSTS) + return ARES_ENOTFOUND; +#endif + + fp = fopen(PATH_HOSTS, "r"); + if (!fp) + { + error = ERRNO; + switch(error) + { + case ENOENT: + case ESRCH: + return ARES_ENOTFOUND; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + PATH_HOSTS)); + *host = NULL; + return ARES_EFILE; + } + } + while ((status = ares__get_hostent(fp, addr->family, host)) == ARES_SUCCESS) + { + if (addr->family != (*host)->h_addrtype) + { + ares_free_hostent(*host); + continue; + } + if (addr->family == AF_INET) + { + if (memcmp((*host)->h_addr, &addr->addrV4, sizeof(struct in_addr)) == 0) + break; + } + else if (addr->family == AF_INET6) + { + if (memcmp((*host)->h_addr, &addr->addrV6, sizeof(struct in6_addr)) == 0) + break; + } + ares_free_hostent(*host); + } + fclose(fp); + if (status == ARES_EOF) + status = ARES_ENOTFOUND; + if (status != ARES_SUCCESS) + *host = NULL; + return status; +} + +static void ptr_rr_name(char *name, const struct ares_addr *addr) +{ + if (addr->family == AF_INET) + { + unsigned long laddr = ntohl(addr->addrV4.s_addr); + int a1 = (int)((laddr >> 24) & 0xff); + int a2 = (int)((laddr >> 16) & 0xff); + int a3 = (int)((laddr >> 8) & 0xff); + int a4 = (int)(laddr & 0xff); + sprintf(name, "%d.%d.%d.%d.in-addr.arpa", a4, a3, a2, a1); + } + else + { + unsigned char *bytes = (unsigned char *)&addr->addrV6.s6_addr; + /* There are too many arguments to do this in one line using + * minimally C89-compliant compilers */ + sprintf(name, + "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.", + bytes[15]&0xf, bytes[15] >> 4, bytes[14]&0xf, bytes[14] >> 4, + bytes[13]&0xf, bytes[13] >> 4, bytes[12]&0xf, bytes[12] >> 4, + bytes[11]&0xf, bytes[11] >> 4, bytes[10]&0xf, bytes[10] >> 4, + bytes[9]&0xf, bytes[9] >> 4, bytes[8]&0xf, bytes[8] >> 4); + sprintf(name+strlen(name), + "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa", + bytes[7]&0xf, bytes[7] >> 4, bytes[6]&0xf, bytes[6] >> 4, + bytes[5]&0xf, bytes[5] >> 4, bytes[4]&0xf, bytes[4] >> 4, + bytes[3]&0xf, bytes[3] >> 4, bytes[2]&0xf, bytes[2] >> 4, + bytes[1]&0xf, bytes[1] >> 4, bytes[0]&0xf, bytes[0] >> 4); + } +} diff --git a/3rdParty/CAres/src/ares_gethostbyname.c b/3rdParty/CAres/src/ares_gethostbyname.c new file mode 100644 index 0000000..fc66c6f --- /dev/null +++ b/3rdParty/CAres/src/ares_gethostbyname.c @@ -0,0 +1,511 @@ +/* $Id: ares_gethostbyname.c,v 1.50 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif + +#include "ares.h" +#include "inet_net_pton.h" +#include "bitncmp.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 +#endif + +struct host_query { + /* Arguments passed to ares_gethostbyname() */ + ares_channel channel; + char *name; + ares_host_callback callback; + void *arg; + int sent_family; /* this family is what was is being used */ + int want_family; /* this family is what is asked for in the API */ + const char *remaining_lookups; + int timeouts; +}; + +static void next_lookup(struct host_query *hquery, int status_code); +static void host_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_hquery(struct host_query *hquery, int status, + struct hostent *host); +static int fake_hostent(const char *name, int family, + ares_host_callback callback, void *arg); +static int file_lookup(const char *name, int family, struct hostent **host); +static void sort_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort); +static void sort6_addresses(struct hostent *host, + const struct apattern *sortlist, int nsort); +static int get_address_index(const struct in_addr *addr, + const struct apattern *sortlist, int nsort); +static int get6_address_index(const struct in6_addr *addr, + const struct apattern *sortlist, int nsort); + +void ares_gethostbyname(ares_channel channel, const char *name, int family, + ares_host_callback callback, void *arg) +{ + struct host_query *hquery; + + /* Right now we only know how to look up Internet addresses - and unspec + means try both basically. */ + switch (family) { + case AF_INET: + case AF_INET6: + case AF_UNSPEC: + break; + default: + callback(arg, ARES_ENOTIMP, 0, NULL); + return; + } + + if (fake_hostent(name, family, callback, arg)) + return; + + /* Allocate and fill in the host query structure. */ + hquery = malloc(sizeof(struct host_query)); + if (!hquery) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + hquery->channel = channel; + hquery->name = strdup(name); + hquery->want_family = family; + hquery->sent_family = -1; /* nothing is sent yet */ + if (!hquery->name) { + free(hquery); + callback(arg, ARES_ENOMEM, 0, NULL); + return; + } + hquery->callback = callback; + hquery->arg = arg; + hquery->remaining_lookups = channel->lookups; + hquery->timeouts = 0; + + /* Start performing lookups according to channel->lookups. */ + next_lookup(hquery, ARES_ECONNREFUSED /* initial error code */); +} + +static void next_lookup(struct host_query *hquery, int status_code) +{ + const char *p; + struct hostent *host; + int status = status_code; + + for (p = hquery->remaining_lookups; *p; p++) + { + switch (*p) + { + case 'b': + /* DNS lookup */ + hquery->remaining_lookups = p + 1; + if ((hquery->want_family == AF_INET6) || + (hquery->want_family == AF_UNSPEC)) { + /* if inet6 or unspec, start out with AAAA */ + hquery->sent_family = AF_INET6; + ares_search(hquery->channel, hquery->name, C_IN, T_AAAA, + host_callback, hquery); + } + else { + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback, + hquery); + } + return; + + case 'f': + /* Host file lookup */ + status = file_lookup(hquery->name, hquery->want_family, &host); + + /* this status check below previously checked for !ARES_ENOTFOUND, + but we should not assume that this single error code is the one + that can occur, as that is in fact no longer the case */ + if (status == ARES_SUCCESS) + { + end_hquery(hquery, status, host); + return; + } + status = status_code; /* Use original status code */ + break; + } + } + end_hquery(hquery, status, NULL); +} + +static void host_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct host_query *hquery = (struct host_query *) arg; + ares_channel channel = hquery->channel; + struct hostent *host = NULL; + + hquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + if (hquery->sent_family == AF_INET) + { + status = ares_parse_a_reply(abuf, alen, &host, NULL, NULL); + if (host && channel->nsort) + sort_addresses(host, channel->sortlist, channel->nsort); + } + else if (hquery->sent_family == AF_INET6) + { + status = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL); + if (status == ARES_ENODATA || status == ARES_EBADRESP) { + /* The query returned something but either there were no AAAA records (e.g. just CNAME) + or the response was malformed. Try looking up A instead. + We should possibly limit this attempt-next logic to AF_UNSPEC lookups only. */ + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, + host_callback, hquery); + return; + } + if (host && channel->nsort) + sort6_addresses(host, channel->sortlist, channel->nsort); + } + end_hquery(hquery, status, host); + } + else if ((status == ARES_ENODATA || status == ARES_EBADRESP || status == ARES_ETIMEOUT) && hquery->sent_family == AF_INET6) + { + /* The AAAA query yielded no useful result. Now look up an A instead. + We should possibly limit this attempt-next logic to AF_UNSPEC lookups only. */ + hquery->sent_family = AF_INET; + ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback, + hquery); + } + else if (status == ARES_EDESTRUCTION) + end_hquery(hquery, status, NULL); + else + next_lookup(hquery, status); +} + +static void end_hquery(struct host_query *hquery, int status, + struct hostent *host) +{ + hquery->callback(hquery->arg, status, hquery->timeouts, host); + if (host) + ares_free_hostent(host); + free(hquery->name); + free(hquery); +} + +/* If the name looks like an IP address, fake up a host entry, end the + * query immediately, and return true. Otherwise return false. + */ +static int fake_hostent(const char *name, int family, ares_host_callback callback, + void *arg) +{ + struct hostent hostent; + char *aliases[1] = { NULL }; + char *addrs[2]; + int result = 0; + struct in_addr in; + struct in6_addr in6; + + if (family == AF_INET || family == AF_INET6) + { + /* It only looks like an IP address if it's all numbers and dots. */ + int numdots = 0, valid = 1; + const char *p; + for (p = name; *p; p++) + { + if (!ISDIGIT(*p) && *p != '.') { + valid = 0; + break; + } else if (*p == '.') { + numdots++; + } + } + + /* if we don't have 3 dots, it is illegal + * (although inet_addr doesn't think so). + */ + if (numdots != 3 || !valid) + result = 0; + else + result = ((in.s_addr = inet_addr(name)) == INADDR_NONE ? 0 : 1); + + if (result) + family = AF_INET; + } + if (family == AF_INET6) + result = (ares_inet_pton(AF_INET6, name, &in6) < 1 ? 0 : 1); + + if (!result) + return 0; + + if (family == AF_INET) + { + hostent.h_length = (int)sizeof(struct in_addr); + addrs[0] = (char *)∈ + } + else if (family == AF_INET6) + { + hostent.h_length = (int)sizeof(struct in6_addr); + addrs[0] = (char *)&in6; + } + /* Duplicate the name, to avoid a constness violation. */ + hostent.h_name = strdup(name); + if (!hostent.h_name) + { + callback(arg, ARES_ENOMEM, 0, NULL); + return 1; + } + + /* Fill in the rest of the host structure and terminate the query. */ + addrs[1] = NULL; + hostent.h_aliases = aliases; + hostent.h_addrtype = family; + hostent.h_addr_list = addrs; + callback(arg, ARES_SUCCESS, 0, &hostent); + + free((char *)(hostent.h_name)); + return 1; +} + +/* This is an API method */ +int ares_gethostbyname_file(ares_channel channel, const char *name, + int family, struct hostent **host) +{ + int result; + + /* We only take the channel to ensure that ares_init() been called. */ + if(channel == NULL) + { + /* Anything will do, really. This seems fine, and is consistent with + other error cases. */ + *host = NULL; + return ARES_ENOTFOUND; + } + + /* Just chain to the internal implementation we use here; it's exactly + * what we want. + */ + result = file_lookup(name, family, host); + if(result != ARES_SUCCESS) + { + /* We guarantee a NULL hostent on failure. */ + *host = NULL; + } + return result; +} + +static int file_lookup(const char *name, int family, struct hostent **host) +{ + FILE *fp; + char **alias; + int status; + int error; + +#ifdef WIN32 + char PATH_HOSTS[MAX_PATH]; + if (IS_NT()) { + char tmp[MAX_PATH]; + HKEY hkeyHosts; + + if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts) + == ERROR_SUCCESS) + { + DWORD dwLength = MAX_PATH; + RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp, + &dwLength); + ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH); + RegCloseKey(hkeyHosts); + } + } + else + GetWindowsDirectory(PATH_HOSTS, MAX_PATH); + + strcat(PATH_HOSTS, WIN_PATH_HOSTS); + +#elif defined(WATT32) + extern const char *_w32_GetHostsFile (void); + const char *PATH_HOSTS = _w32_GetHostsFile(); + + if (!PATH_HOSTS) + return ARES_ENOTFOUND; +#endif + + fp = fopen(PATH_HOSTS, "r"); + if (!fp) + { + error = ERRNO; + switch(error) + { + case ENOENT: + case ESRCH: + return ARES_ENOTFOUND; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + PATH_HOSTS)); + *host = NULL; + return ARES_EFILE; + } + } + while ((status = ares__get_hostent(fp, family, host)) == ARES_SUCCESS) + { + if (strcasecmp((*host)->h_name, name) == 0) + break; + for (alias = (*host)->h_aliases; *alias; alias++) + { + if (strcasecmp(*alias, name) == 0) + break; + } + if (*alias) + break; + ares_free_hostent(*host); + } + fclose(fp); + if (status == ARES_EOF) + status = ARES_ENOTFOUND; + if (status != ARES_SUCCESS) + *host = NULL; + return status; +} + +static void sort_addresses(struct hostent *host, const struct apattern *sortlist, + int nsort) +{ + struct in_addr a1, a2; + int i1, i2, ind1, ind2; + + /* This is a simple insertion sort, not optimized at all. i1 walks + * through the address list, with the loop invariant that everything + * to the left of i1 is sorted. In the loop body, the value at i1 is moved + * back through the list (via i2) until it is in sorted order. + */ + for (i1 = 0; host->h_addr_list[i1]; i1++) + { + memcpy(&a1, host->h_addr_list[i1], sizeof(struct in_addr)); + ind1 = get_address_index(&a1, sortlist, nsort); + for (i2 = i1 - 1; i2 >= 0; i2--) + { + memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr)); + ind2 = get_address_index(&a2, sortlist, nsort); + if (ind2 <= ind1) + break; + memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr)); + } + memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in_addr)); + } +} + +/* Find the first entry in sortlist which matches addr. Return nsort + * if none of them match. + */ +static int get_address_index(const struct in_addr *addr, + const struct apattern *sortlist, + int nsort) +{ + int i; + + for (i = 0; i < nsort; i++) + { + if (sortlist[i].family != AF_INET) + continue; + if (sortlist[i].type == PATTERN_MASK) + { + if ((addr->s_addr & sortlist[i].mask.addr4.s_addr) + == sortlist[i].addrV4.s_addr) + break; + } + else + { + if (!ares_bitncmp(&addr->s_addr, &sortlist[i].addrV4.s_addr, + sortlist[i].mask.bits)) + break; + } + } + return i; +} + +static void sort6_addresses(struct hostent *host, const struct apattern *sortlist, + int nsort) +{ + struct in6_addr a1, a2; + int i1, i2, ind1, ind2; + + /* This is a simple insertion sort, not optimized at all. i1 walks + * through the address list, with the loop invariant that everything + * to the left of i1 is sorted. In the loop body, the value at i1 is moved + * back through the list (via i2) until it is in sorted order. + */ + for (i1 = 0; host->h_addr_list[i1]; i1++) + { + memcpy(&a1, host->h_addr_list[i1], sizeof(struct in6_addr)); + ind1 = get6_address_index(&a1, sortlist, nsort); + for (i2 = i1 - 1; i2 >= 0; i2--) + { + memcpy(&a2, host->h_addr_list[i2], sizeof(struct in6_addr)); + ind2 = get6_address_index(&a2, sortlist, nsort); + if (ind2 <= ind1) + break; + memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in6_addr)); + } + memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in6_addr)); + } +} + +/* Find the first entry in sortlist which matches addr. Return nsort + * if none of them match. + */ +static int get6_address_index(const struct in6_addr *addr, + const struct apattern *sortlist, + int nsort) +{ + int i; + + for (i = 0; i < nsort; i++) + { + if (sortlist[i].family != AF_INET6) + continue; + if (!ares_bitncmp(&addr->s6_addr, &sortlist[i].addrV6.s6_addr, sortlist[i].mask.bits)) + break; + } + return i; +} diff --git a/3rdParty/CAres/src/ares_getnameinfo.c b/3rdParty/CAres/src/ares_getnameinfo.c new file mode 100644 index 0000000..c1c0b16 --- /dev/null +++ b/3rdParty/CAres/src/ares_getnameinfo.c @@ -0,0 +1,409 @@ +/* $Id: ares_getnameinfo.c,v 1.36 2009-11-09 12:56:11 yangtse Exp $ */ + +/* Copyright 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ +#include "ares_setup.h" + +#ifdef HAVE_GETSERVBYPORT_R +# if !defined(GETSERVBYPORT_R_ARGS) || \ + (GETSERVBYPORT_R_ARGS < 4) || (GETSERVBYPORT_R_ARGS > 6) +# error "you MUST specifiy a valid number of arguments for getservbyport_r" +# endif +#endif + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_NET_IF_H +#include <net/if.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_ipv6.h" +#include "inet_ntop.h" +#include "ares_private.h" + +struct nameinfo_query { + ares_nameinfo_callback callback; + void *arg; + union { + struct sockaddr_in addr4; + struct sockaddr_in6 addr6; + } addr; + int family; + int flags; + int timeouts; +}; + +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +#define IPBUFSIZ 40+IF_NAMESIZE +#else +#define IPBUFSIZ 40 +#endif + +static void nameinfo_callback(void *arg, int status, int timeouts, struct hostent *host); +static char *lookup_service(unsigned short port, int flags, + char *buf, size_t buflen); +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int scopeid, + char *buf, size_t buflen); +#endif +static char *ares_striendstr(const char *s1, const char *s2); + +void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa, + ares_socklen_t salen, + int flags, ares_nameinfo_callback callback, void *arg) +{ + struct sockaddr_in *addr = NULL; + struct sockaddr_in6 *addr6 = NULL; + struct nameinfo_query *niquery; + unsigned int port = 0; + + /* Verify the buffer size */ + if (salen == sizeof(struct sockaddr_in)) + { + addr = (struct sockaddr_in *)sa; + port = addr->sin_port; + } + else if (salen == sizeof(struct sockaddr_in6)) + { + addr6 = (struct sockaddr_in6 *)sa; + port = addr6->sin6_port; + } + else + { + callback(arg, ARES_ENOTIMP, 0, NULL, NULL); + return; + } + + /* If neither, assume they want a host */ + if (!(flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) + flags |= ARES_NI_LOOKUPHOST; + + /* All they want is a service, no need for DNS */ + if ((flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST)) + { + char buf[33], *service; + + service = lookup_service((unsigned short)(port & 0xffff), + flags, buf, sizeof(buf)); + callback(arg, ARES_SUCCESS, 0, NULL, service); + return; + } + + /* They want a host lookup */ + if ((flags & ARES_NI_LOOKUPHOST)) + { + /* A numeric host can be handled without DNS */ + if ((flags & ARES_NI_NUMERICHOST)) + { + char ipbuf[IPBUFSIZ]; + char srvbuf[33]; + char *service = NULL; + ipbuf[0] = 0; + + /* Specifying not to lookup a host, but then saying a host + * is required has to be illegal. + */ + if (flags & ARES_NI_NAMEREQD) + { + callback(arg, ARES_EBADFLAGS, 0, NULL, NULL); + return; + } + if (salen == sizeof(struct sockaddr_in6)) + { + ares_inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, IPBUFSIZ); + /* If the system supports scope IDs, use it */ +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + append_scopeid(addr6, flags, ipbuf, sizeof(ipbuf)); +#endif + } + else + { + ares_inet_ntop(AF_INET, &addr->sin_addr, ipbuf, IPBUFSIZ); + } + /* They also want a service */ + if (flags & ARES_NI_LOOKUPSERVICE) + service = lookup_service((unsigned short)(port & 0xffff), + flags, srvbuf, sizeof(srvbuf)); + callback(arg, ARES_SUCCESS, 0, ipbuf, service); + return; + } + /* This is where a DNS lookup becomes necessary */ + else + { + niquery = malloc(sizeof(struct nameinfo_query)); + if (!niquery) + { + callback(arg, ARES_ENOMEM, 0, NULL, NULL); + return; + } + niquery->callback = callback; + niquery->arg = arg; + niquery->flags = flags; + niquery->timeouts = 0; + if (sa->sa_family == AF_INET) + { + niquery->family = AF_INET; + memcpy(&niquery->addr.addr4, addr, sizeof(addr)); + ares_gethostbyaddr(channel, &addr->sin_addr, sizeof(struct in_addr), AF_INET, + nameinfo_callback, niquery); + } + else + { + niquery->family = AF_INET6; + memcpy(&niquery->addr.addr6, addr6, sizeof(addr6)); + ares_gethostbyaddr(channel, &addr6->sin6_addr, sizeof(struct in6_addr), AF_INET6, + nameinfo_callback, niquery); + } + } + } +} + +static void nameinfo_callback(void *arg, int status, int timeouts, struct hostent *host) +{ + struct nameinfo_query *niquery = (struct nameinfo_query *) arg; + char srvbuf[33]; + char *service = NULL; + + niquery->timeouts += timeouts; + if (status == ARES_SUCCESS) + { + /* They want a service too */ + if (niquery->flags & ARES_NI_LOOKUPSERVICE) + { + if (niquery->family == AF_INET) + service = lookup_service(niquery->addr.addr4.sin_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + else + service = lookup_service(niquery->addr.addr6.sin6_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + } + /* NOFQDN means we have to strip off the domain name portion. + We do this by determining our own domain name, then searching the string + for this domain name and removing it. + */ +#ifdef HAVE_GETHOSTNAME + if (niquery->flags & ARES_NI_NOFQDN) + { + char buf[255]; + char *domain; + gethostname(buf, 255); + if ((domain = strchr(buf, '.'))) + { + char *end = ares_striendstr(host->h_name, domain); + if (end) + *end = 0; + } + } +#endif + niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, (char *)(host->h_name), + service); + return; + } + /* We couldn't find the host, but it's OK, we can use the IP */ + else if (status == ARES_ENOTFOUND && !(niquery->flags & ARES_NI_NAMEREQD)) + { + char ipbuf[IPBUFSIZ]; + if (niquery->family == AF_INET) + ares_inet_ntop(AF_INET, &niquery->addr.addr4.sin_addr, ipbuf, IPBUFSIZ); + else + { + ares_inet_ntop(AF_INET6, &niquery->addr.addr6.sin6_addr, ipbuf, IPBUFSIZ); +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID + append_scopeid(&niquery->addr.addr6, niquery->flags, ipbuf, sizeof(ipbuf)); +#endif + } + /* They want a service too */ + if (niquery->flags & ARES_NI_LOOKUPSERVICE) + { + if (niquery->family == AF_INET) + service = lookup_service(niquery->addr.addr4.sin_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + else + service = lookup_service(niquery->addr.addr6.sin6_port, + niquery->flags, srvbuf, sizeof(srvbuf)); + } + niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, ipbuf, service); + return; + } + niquery->callback(niquery->arg, status, niquery->timeouts, NULL, NULL); + free(niquery); +} + +static char *lookup_service(unsigned short port, int flags, + char *buf, size_t buflen) +{ + const char *proto; + struct servent *sep; +#ifdef HAVE_GETSERVBYPORT_R + struct servent se; +#endif + char tmpbuf[4096]; + + if (port) + { + if (flags & ARES_NI_NUMERICSERV) + sep = NULL; + else + { + if (flags & ARES_NI_UDP) + proto = "udp"; + else if (flags & ARES_NI_SCTP) + proto = "sctp"; + else if (flags & ARES_NI_DCCP) + proto = "dccp"; + else + proto = "tcp"; +#ifdef HAVE_GETSERVBYPORT_R + sep = &se; + memset(tmpbuf, 0, sizeof(tmpbuf)); +#if GETSERVBYPORT_R_ARGS == 6 + if (getservbyport_r(port, proto, &se, (void *)tmpbuf, sizeof(tmpbuf), &sep) != 0) + sep = NULL; +#elif GETSERVBYPORT_R_ARGS == 5 + sep = getservbyport_r(port, proto, &se, (void *)tmpbuf, sizeof(tmpbuf)); +#elif GETSERVBYPORT_R_ARGS == 4 + if (getservbyport_r(port, proto, &se, (void *)tmpbuf) != 0) + sep = NULL; +#else + /* Lets just hope the OS uses TLS! */ + sep = getservbyport(port, proto); +#endif +#else + /* Lets just hope the OS uses TLS! */ +#if (defined(NETWARE) && !defined(__NOVELL_LIBC__)) + sep = getservbyport(port, (char*)proto); +#else + sep = getservbyport(port, proto); +#endif +#endif + } + if (sep && sep->s_name) + /* get service name */ + strcpy(tmpbuf, sep->s_name); + else + /* get port as a string */ + sprintf(tmpbuf, "%u", (unsigned int)ntohs(port)); + if (strlen(tmpbuf) < buflen) + /* return it if buffer big enough */ + strcpy(buf, tmpbuf); + else + /* avoid reusing previous one */ + buf[0] = '\0'; + return buf; + } + buf[0] = '\0'; + return NULL; +} + +#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID +static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int flags, + char *buf, size_t buflen) +{ +#ifdef HAVE_IF_INDEXTONAME + int is_ll, is_mcll; +#endif + char fmt_u[] = "%u"; + char fmt_lu[] = "%lu"; + char tmpbuf[IF_NAMESIZE + 2]; + size_t bufl; + char *fmt = (sizeof(addr6->sin6_scope_id) > sizeof(unsigned int))?fmt_lu:fmt_u; + + tmpbuf[0] = '%'; + +#ifdef HAVE_IF_INDEXTONAME + is_ll = IN6_IS_ADDR_LINKLOCAL(&addr6->sin6_addr); + is_mcll = IN6_IS_ADDR_MC_LINKLOCAL(&addr6->sin6_addr); + if ((flags & ARES_NI_NUMERICSCOPE) || + (!is_ll && !is_mcll)) + { + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + } + else + { + if (if_indextoname(addr6->sin6_scope_id, &tmpbuf[1]) == NULL) + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + } +#else + sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id); + (void) flags; +#endif + tmpbuf[IF_NAMESIZE + 1] = '\0'; + bufl = strlen(buf); + + if(bufl + strlen(tmpbuf) < buflen) + /* only append the scopeid string if it fits in the target buffer */ + strcpy(&buf[bufl], tmpbuf); +} +#endif + +/* Determines if s1 ends with the string in s2 (case-insensitive) */ +static char *ares_striendstr(const char *s1, const char *s2) +{ + const char *c1, *c2, *c1_begin; + int lo1, lo2; + size_t s1_len = strlen(s1), s2_len = strlen(s2); + + /* If the substr is longer than the full str, it can't match */ + if (s2_len > s1_len) + return NULL; + + /* Jump to the end of s1 minus the length of s2 */ + c1_begin = s1+s1_len-s2_len; + c1 = (const char *)c1_begin; + c2 = s2; + while (c2 < s2+s2_len) + { + lo1 = tolower(*c1); + lo2 = tolower(*c2); + if (lo1 != lo2) + return NULL; + else + { + c1++; + c2++; + } + } + if (c2 == c1 && c2 == NULL) + return (char *)c1_begin; + return NULL; +} diff --git a/3rdParty/CAres/src/ares_getopt.c b/3rdParty/CAres/src/ares_getopt.c new file mode 100644 index 0000000..67e1be7 --- /dev/null +++ b/3rdParty/CAres/src/ares_getopt.c @@ -0,0 +1,123 @@ +/* + * Original file name getopt.c Initial import into the c-ares source tree + * on 2007-04-11. Lifted from version 5.2 of the 'Open Mash' project with + * the modified BSD license, BSD license without the advertising clause. + * + * $Id: ares_getopt.c,v 1.9 2009-11-22 03:41:26 yangtse Exp $ + */ + +/* + * getopt.c -- + * + * Standard UNIX getopt function. Code is from BSD. + * + * Copyright (c) 1987-2001 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * A. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * B. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * C. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS + * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* #if !defined(lint) + * static char sccsid[] = "@(#)getopt.c 8.2 (Berkeley) 4/2/94"; + * #endif + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "ares_getopt.h" + +int opterr = 1, /* if error message should be printed */ + optind = 1; /* index into parent argv vector */ +int optopt = 0; /* character checked for validity */ +static int optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG (char *)"" + +/* + * ares_getopt -- + * Parse argc/argv argument vector. + */ +int +ares_getopt(int nargc, char * const nargv[], const char *ostr) +{ + static char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc || *(place = nargv[optind]) != '-') { + place = EMSG; + return (EOF); + } + if (place[1] && *++place == '-') { /* found "--" */ + ++optind; + place = EMSG; + return (EOF); + } + } /* option letter okay? */ + if ((optopt = (int)*place++) == (int)':' || + (oli = strchr(ostr, optopt)) == NULL) { + /* + * if the user didn't specify '-' as an option, + * assume it means EOF. + */ + if (optopt == (int)'-') + return (EOF); + if (!*place) + ++optind; + if (opterr && *ostr != ':') + (void)fprintf(stderr, + "%s: illegal option -- %c\n", __FILE__, optopt); + return (BADCH); + } + if (*++oli != ':') { /* don't need argument */ + optarg = NULL; + if (!*place) + ++optind; + } + else { /* need an argument */ + if (*place) /* no white space */ + optarg = place; + else if (nargc <= ++optind) { /* no arg */ + place = EMSG; + if (*ostr == ':') + return (BADARG); + if (opterr) + (void)fprintf(stderr, + "%s: option requires an argument -- %c\n", + __FILE__, optopt); + return (BADCH); + } + else /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return (optopt); /* dump back option letter */ +} diff --git a/3rdParty/CAres/src/ares_getopt.h b/3rdParty/CAres/src/ares_getopt.h new file mode 100644 index 0000000..63acb3b --- /dev/null +++ b/3rdParty/CAres/src/ares_getopt.h @@ -0,0 +1,53 @@ +#ifndef ARES_GETOPT_H +#define ARES_GETOPT_H + +/* + * Copyright (c) 1987-2001 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * A. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * B. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * C. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS + * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + + +int ares_getopt(int nargc, char * const nargv[], const char *ostr); + +#undef optarg +#undef optind +#undef opterr +#undef optopt +#undef optreset + +#define optarg ares_optarg +#define optind ares_optind +#define opterr ares_opterr +#define optopt ares_optopt +#define optreset ares_optreset + +extern char *optarg; +extern int optind; +extern int opterr; +extern int optopt; + +#endif /* ARES_GETOPT_H */ diff --git a/3rdParty/CAres/src/ares_getsock.c b/3rdParty/CAres/src/ares_getsock.c new file mode 100644 index 0000000..a25b83a --- /dev/null +++ b/3rdParty/CAres/src/ares_getsock.c @@ -0,0 +1,75 @@ +/* $Id: ares_getsock.c,v 1.8 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright (C) 2005 - 2007, Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +int ares_getsock(ares_channel channel, + int *s, + int numsocks) /* size of the 'socks' array */ +{ + struct server_state *server; + int i; + int sockindex=0; + int bitmap = 0; + unsigned int setbits = 0xffffffff; + + ares_socket_t *socks = (ares_socket_t *)s; + + /* Are there any active queries? */ + int active_queries = !ares__is_list_empty(&(channel->all_queries)); + + for (i = 0; + (i < channel->nservers) && (sockindex < ARES_GETSOCK_MAXNUM); + i++) + { + server = &channel->servers[i]; + /* We only need to register interest in UDP sockets if we have + * outstanding queries. + */ + if (active_queries && server->udp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks) + break; + socks[sockindex] = server->udp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + sockindex++; + } + /* We always register for TCP events, because we want to know + * when the other side closes the connection, so we don't waste + * time trying to use a broken connection. + */ + if (server->tcp_socket != ARES_SOCKET_BAD) + { + if(sockindex >= numsocks) + break; + socks[sockindex] = server->tcp_socket; + bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex); + + if (server->qhead && active_queries) + /* then the tcp socket is also writable! */ + bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex); + + sockindex++; + } + } + return bitmap; +} diff --git a/3rdParty/CAres/src/ares_init.c b/3rdParty/CAres/src/ares_init.c new file mode 100644 index 0000000..cb541af --- /dev/null +++ b/3rdParty/CAres/src/ares_init.c @@ -0,0 +1,1582 @@ +/* $Id: ares_init.c,v 1.103 2009-11-18 10:33:54 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2007-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef USE_WINSOCK +#include <iphlpapi.h> +#endif + +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif + +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif + +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <time.h> +#include <errno.h> +#include "ares.h" +#include "inet_net_pton.h" +#include "ares_library_init.h" +#include "ares_private.h" + +#ifdef WATT32 +#undef WIN32 /* Redefined in MingW/MSVC headers */ +#endif + +static int init_by_options(ares_channel channel, const struct ares_options *options, + int optmask); +static int init_by_environment(ares_channel channel); +static int init_by_resolv_conf(ares_channel channel); +static int init_by_defaults(ares_channel channel); + +#ifndef WATT32 +static int config_nameserver(struct server_state **servers, int *nservers, + char *str); +#endif +static int set_search(ares_channel channel, const char *str); +static int set_options(ares_channel channel, const char *str); +static const char *try_option(const char *p, const char *q, const char *opt); +static int init_id_key(rc4_key* key,int key_data_len); + +#if !defined(WIN32) && !defined(WATT32) +static int sortlist_alloc(struct apattern **sortlist, int *nsort, struct apattern *pat); +static int ip_addr(const char *s, int len, struct in_addr *addr); +static void natural_mask(struct apattern *pat); +static int config_domain(ares_channel channel, char *str); +static int config_lookup(ares_channel channel, const char *str, + const char *bindch, const char *filech); +static int config_sortlist(struct apattern **sortlist, int *nsort, + const char *str); +static char *try_config(char *s, const char *opt); +#endif + +#define ARES_CONFIG_CHECK(x) (x->lookups && x->nsort > -1 && \ + x->nservers > -1 && \ + x->ndomains > -1 && \ + x->ndots > -1 && x->timeout > -1 && \ + x->tries > -1) + +int ares_init(ares_channel *channelptr) +{ + return ares_init_options(channelptr, NULL, 0); +} + +int ares_init_options(ares_channel *channelptr, struct ares_options *options, + int optmask) +{ + ares_channel channel; + int i; + int status = ARES_SUCCESS; + struct server_state *server; + struct timeval now; + +#ifdef CURLDEBUG + const char *env = getenv("CARES_MEMDEBUG"); + + if (env) + curl_memdebug(env); + env = getenv("CARES_MEMLIMIT"); + if (env) + curl_memlimit(atoi(env)); +#endif + + if (ares_library_initialized() != ARES_SUCCESS) + return ARES_ENOTINITIALIZED; + + channel = malloc(sizeof(struct ares_channeldata)); + if (!channel) { + *channelptr = NULL; + return ARES_ENOMEM; + } + + now = ares__tvnow(); + + /* Set everything to distinguished values so we know they haven't + * been set yet. + */ + channel->flags = -1; + channel->timeout = -1; + channel->tries = -1; + channel->ndots = -1; + channel->rotate = -1; + channel->udp_port = -1; + channel->tcp_port = -1; + channel->socket_send_buffer_size = -1; + channel->socket_receive_buffer_size = -1; + channel->nservers = -1; + channel->ndomains = -1; + channel->nsort = -1; + channel->tcp_connection_generation = 0; + channel->lookups = NULL; + channel->domains = NULL; + channel->sortlist = NULL; + channel->servers = NULL; + channel->sock_state_cb = NULL; + channel->sock_state_cb_data = NULL; + channel->sock_create_cb = NULL; + channel->sock_create_cb_data = NULL; + + channel->last_server = 0; + channel->last_timeout_processed = (time_t)now.tv_sec; + + /* Initialize our lists of queries */ + ares__init_list_head(&(channel->all_queries)); + for (i = 0; i < ARES_QID_TABLE_SIZE; i++) + { + ares__init_list_head(&(channel->queries_by_qid[i])); + } + for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++) + { + ares__init_list_head(&(channel->queries_by_timeout[i])); + } + + /* Initialize configuration by each of the four sources, from highest + * precedence to lowest. + */ + + if (status == ARES_SUCCESS) { + status = init_by_options(channel, options, optmask); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_options failed: %s\n", + ares_strerror(status))); + } + if (status == ARES_SUCCESS) { + status = init_by_environment(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_environment failed: %s\n", + ares_strerror(status))); + } + if (status == ARES_SUCCESS) { + status = init_by_resolv_conf(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_resolv_conf failed: %s\n", + ares_strerror(status))); + } + + /* + * No matter what failed or succeeded, seed defaults to provide + * useful behavior for things that we missed. + */ + status = init_by_defaults(channel); + if (status != ARES_SUCCESS) + DEBUGF(fprintf(stderr, "Error: init_by_defaults failed: %s\n", + ares_strerror(status))); + + /* Generate random key */ + + if (status == ARES_SUCCESS) { + status = init_id_key(&channel->id_key, ARES_ID_KEY_LEN); + if (status == ARES_SUCCESS) + channel->next_id = ares__generate_new_id(&channel->id_key); + else + DEBUGF(fprintf(stderr, "Error: init_id_key failed: %s\n", + ares_strerror(status))); + } + + if (status != ARES_SUCCESS) + { + /* Something failed; clean up memory we may have allocated. */ + if (channel->servers) + free(channel->servers); + if (channel->domains) + { + for (i = 0; i < channel->ndomains; i++) + free(channel->domains[i]); + free(channel->domains); + } + if (channel->sortlist) + free(channel->sortlist); + if(channel->lookups) + free(channel->lookups); + free(channel); + return status; + } + + /* Trim to one server if ARES_FLAG_PRIMARY is set. */ + if ((channel->flags & ARES_FLAG_PRIMARY) && channel->nservers > 1) + channel->nservers = 1; + + /* Initialize server states. */ + for (i = 0; i < channel->nservers; i++) + { + server = &channel->servers[i]; + server->udp_socket = ARES_SOCKET_BAD; + server->tcp_socket = ARES_SOCKET_BAD; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + server->tcp_lenbuf_pos = 0; + server->tcp_buffer = NULL; + server->qhead = NULL; + server->qtail = NULL; + ares__init_list_head(&(server->queries_to_server)); + server->channel = channel; + server->is_broken = 0; + } + + *channelptr = channel; + return ARES_SUCCESS; +} + +/* ares_dup() duplicates a channel handle with all its options and returns a + new channel handle */ +int ares_dup(ares_channel *dest, ares_channel src) +{ + struct ares_options opts; + int rc; + int optmask; + + *dest = NULL; /* in case of failure return NULL explicitly */ + + /* First get the options supported by the old ares_save_options() function, + which is most of them */ + rc = ares_save_options(src, &opts, &optmask); + if(rc) + return rc; + + /* Then create the new channel with those options */ + rc = ares_init_options(dest, &opts, optmask); + + /* destroy the options copy to not leak any memory */ + ares_destroy_options(&opts); + + if(rc) + return rc; + + /* Now clone the options that ares_save_options() doesn't support. */ + (*dest)->sock_create_cb = src->sock_create_cb; + (*dest)->sock_create_cb_data = src->sock_create_cb_data; + + + return ARES_SUCCESS; /* everything went fine */ + +} + +/* Save options from initialized channel */ +int ares_save_options(ares_channel channel, struct ares_options *options, + int *optmask) +{ + int i; + + /* Zero everything out */ + memset(options, 0, sizeof(struct ares_options)); + + if (!ARES_CONFIG_CHECK(channel)) + return ARES_ENODATA; + + /* Traditionally the optmask wasn't saved in the channel struct so it was + recreated here. ROTATE is the first option that has no struct field of + its own in the public config struct */ + (*optmask) = (ARES_OPT_FLAGS|ARES_OPT_TRIES|ARES_OPT_NDOTS| + ARES_OPT_UDP_PORT|ARES_OPT_TCP_PORT|ARES_OPT_SOCK_STATE_CB| + ARES_OPT_SERVERS|ARES_OPT_DOMAINS|ARES_OPT_LOOKUPS| + ARES_OPT_SORTLIST|ARES_OPT_TIMEOUTMS) | + (channel->optmask & ARES_OPT_ROTATE); + + /* Copy easy stuff */ + options->flags = channel->flags; + + /* We return full millisecond resolution but that's only because we don't + set the ARES_OPT_TIMEOUT anymore, only the new ARES_OPT_TIMEOUTMS */ + options->timeout = channel->timeout; + options->tries = channel->tries; + options->ndots = channel->ndots; + options->udp_port = (unsigned short)channel->udp_port; + options->tcp_port = (unsigned short)channel->tcp_port; + options->sock_state_cb = channel->sock_state_cb; + options->sock_state_cb_data = channel->sock_state_cb_data; + + /* Copy servers */ + if (channel->nservers) { + options->servers = + malloc(channel->nservers * sizeof(struct server_state)); + if (!options->servers && channel->nservers != 0) + return ARES_ENOMEM; + for (i = 0; i < channel->nservers; i++) + options->servers[i] = channel->servers[i].addr; + } + options->nservers = channel->nservers; + + /* copy domains */ + if (channel->ndomains) { + options->domains = malloc(channel->ndomains * sizeof(char *)); + if (!options->domains) + return ARES_ENOMEM; + + for (i = 0; i < channel->ndomains; i++) + { + options->ndomains = i; + options->domains[i] = strdup(channel->domains[i]); + if (!options->domains[i]) + return ARES_ENOMEM; + } + } + options->ndomains = channel->ndomains; + + /* copy lookups */ + if (channel->lookups) { + options->lookups = strdup(channel->lookups); + if (!options->lookups && channel->lookups) + return ARES_ENOMEM; + } + + /* copy sortlist */ + if (channel->nsort) { + options->sortlist = malloc(channel->nsort * sizeof(struct apattern)); + if (!options->sortlist) + return ARES_ENOMEM; + for (i = 0; i < channel->nsort; i++) + { + memcpy(&(options->sortlist[i]), &(channel->sortlist[i]), + sizeof(struct apattern)); + } + } + options->nsort = channel->nsort; + + return ARES_SUCCESS; +} + +static int init_by_options(ares_channel channel, + const struct ares_options *options, + int optmask) +{ + int i; + + /* Easy stuff. */ + if ((optmask & ARES_OPT_FLAGS) && channel->flags == -1) + channel->flags = options->flags; + if ((optmask & ARES_OPT_TIMEOUTMS) && channel->timeout == -1) + channel->timeout = options->timeout; + else if ((optmask & ARES_OPT_TIMEOUT) && channel->timeout == -1) + channel->timeout = options->timeout * 1000; + if ((optmask & ARES_OPT_TRIES) && channel->tries == -1) + channel->tries = options->tries; + if ((optmask & ARES_OPT_NDOTS) && channel->ndots == -1) + channel->ndots = options->ndots; + if ((optmask & ARES_OPT_ROTATE) && channel->rotate == -1) + channel->rotate = 1; + if ((optmask & ARES_OPT_UDP_PORT) && channel->udp_port == -1) + channel->udp_port = options->udp_port; + if ((optmask & ARES_OPT_TCP_PORT) && channel->tcp_port == -1) + channel->tcp_port = options->tcp_port; + if ((optmask & ARES_OPT_SOCK_STATE_CB) && channel->sock_state_cb == NULL) + { + channel->sock_state_cb = options->sock_state_cb; + channel->sock_state_cb_data = options->sock_state_cb_data; + } + if ((optmask & ARES_OPT_SOCK_SNDBUF) + && channel->socket_send_buffer_size == -1) + channel->socket_send_buffer_size = options->socket_send_buffer_size; + if ((optmask & ARES_OPT_SOCK_RCVBUF) + && channel->socket_receive_buffer_size == -1) + channel->socket_receive_buffer_size = options->socket_receive_buffer_size; + + /* Copy the servers, if given. */ + if ((optmask & ARES_OPT_SERVERS) && channel->nservers == -1) + { + /* Avoid zero size allocations at any cost */ + if (options->nservers > 0) + { + channel->servers = + malloc(options->nservers * sizeof(struct server_state)); + if (!channel->servers) + return ARES_ENOMEM; + for (i = 0; i < options->nservers; i++) + channel->servers[i].addr = options->servers[i]; + } + channel->nservers = options->nservers; + } + + /* Copy the domains, if given. Keep channel->ndomains consistent so + * we can clean up in case of error. + */ + if ((optmask & ARES_OPT_DOMAINS) && channel->ndomains == -1) + { + /* Avoid zero size allocations at any cost */ + if (options->ndomains > 0) + { + channel->domains = malloc(options->ndomains * sizeof(char *)); + if (!channel->domains) + return ARES_ENOMEM; + for (i = 0; i < options->ndomains; i++) + { + channel->ndomains = i; + channel->domains[i] = strdup(options->domains[i]); + if (!channel->domains[i]) + return ARES_ENOMEM; + } + } + channel->ndomains = options->ndomains; + } + + /* Set lookups, if given. */ + if ((optmask & ARES_OPT_LOOKUPS) && !channel->lookups) + { + channel->lookups = strdup(options->lookups); + if (!channel->lookups) + return ARES_ENOMEM; + } + + /* copy sortlist */ + if ((optmask & ARES_OPT_SORTLIST) && channel->nsort == -1) + { + channel->sortlist = malloc(options->nsort * sizeof(struct apattern)); + if (!channel->sortlist) + return ARES_ENOMEM; + for (i = 0; i < options->nsort; i++) + { + memcpy(&(channel->sortlist[i]), &(options->sortlist[i]), + sizeof(struct apattern)); + } + channel->nsort = options->nsort; + } + + channel->optmask = optmask; + + return ARES_SUCCESS; +} + +static int init_by_environment(ares_channel channel) +{ + const char *localdomain, *res_options; + int status; + + localdomain = getenv("LOCALDOMAIN"); + if (localdomain && channel->ndomains == -1) + { + status = set_search(channel, localdomain); + if (status != ARES_SUCCESS) + return status; + } + + res_options = getenv("RES_OPTIONS"); + if (res_options) + { + status = set_options(channel, res_options); + if (status != ARES_SUCCESS) + return status; + } + + return ARES_SUCCESS; +} + +#ifdef WIN32 +/* + * Warning: returns a dynamically allocated buffer, the user MUST + * use free() if the function returns 1 + */ +static int get_res_nt(HKEY hKey, const char *subkey, char **obuf) +{ + /* Test for the size we need */ + DWORD size = 0; + int result; + + result = RegQueryValueEx(hKey, subkey, 0, NULL, NULL, &size); + if ((result != ERROR_SUCCESS && result != ERROR_MORE_DATA) || !size) + return 0; + *obuf = malloc(size+1); + if (!*obuf) + return 0; + + if (RegQueryValueEx(hKey, subkey, 0, NULL, + (LPBYTE)*obuf, &size) != ERROR_SUCCESS) + { + free(*obuf); + return 0; + } + if (size == 1) + { + free(*obuf); + return 0; + } + return 1; +} + +static int get_res_interfaces_nt(HKEY hKey, const char *subkey, char **obuf) +{ + char enumbuf[39]; /* GUIDs are 38 chars + 1 for NULL */ + DWORD enum_size = 39; + int idx = 0; + HKEY hVal; + + while (RegEnumKeyEx(hKey, idx++, enumbuf, &enum_size, 0, + NULL, NULL, NULL) != ERROR_NO_MORE_ITEMS) + { + int rc; + + enum_size = 39; + if (RegOpenKeyEx(hKey, enumbuf, 0, KEY_QUERY_VALUE, &hVal) != + ERROR_SUCCESS) + continue; + rc = get_res_nt(hVal, subkey, obuf); + RegCloseKey(hVal); + if (rc) + return 1; + } + return 0; +} + +static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size) +{ + FIXED_INFO *fi, *newfi; + DWORD size = sizeof (*fi); + IP_ADDR_STRING *ipAddr; + int i, count = 0; + int debug = 0; + size_t ip_size = sizeof("255.255.255.255,")-1; + size_t left = ret_size; + char *ret = ret_buf; + HRESULT res; + + fi = malloc(size); + if (!fi) + return 0; + + res = (*ares_fpGetNetworkParams) (fi, &size); + if ((res != ERROR_BUFFER_OVERFLOW) && (res != ERROR_SUCCESS)) + goto quit; + + newfi = realloc(fi, size); + if (!newfi) + goto quit; + + fi = newfi; + res = (*ares_fpGetNetworkParams) (fi, &size); + if (res != ERROR_SUCCESS) + goto quit; + + if (debug) + { + printf ("Host Name: %s\n", fi->HostName); + printf ("Domain Name: %s\n", fi->DomainName); + printf ("DNS Servers:\n" + " %s (primary)\n", fi->DnsServerList.IpAddress.String); + } + if (strlen(fi->DnsServerList.IpAddress.String) > 0 && + inet_addr(fi->DnsServerList.IpAddress.String) != INADDR_NONE && + left > ip_size) + { + ret += sprintf (ret, "%s,", fi->DnsServerList.IpAddress.String); + left -= ret - ret_buf; + count++; + } + + for (i = 0, ipAddr = fi->DnsServerList.Next; ipAddr && left > ip_size; + ipAddr = ipAddr->Next, i++) + { + if (inet_addr(ipAddr->IpAddress.String) != INADDR_NONE) + { + ret += sprintf (ret, "%s,", ipAddr->IpAddress.String); + left -= ret - ret_buf; + count++; + } + if (debug) + printf (" %s (secondary %d)\n", ipAddr->IpAddress.String, i+1); + } + +quit: + if (fi) + free(fi); + + if (debug && left <= ip_size) + printf ("Too many nameservers. Truncating to %d addressess", count); + if (ret > ret_buf) + ret[-1] = '\0'; + return count; +} +#endif + +static int init_by_resolv_conf(ares_channel channel) +{ +#ifndef WATT32 + char *line = NULL; +#endif + int status = -1, nservers = 0, nsort = 0; + struct server_state *servers = NULL; + struct apattern *sortlist = NULL; + +#ifdef WIN32 + + /* + NameServer info via IPHLPAPI (IP helper API): + GetNetworkParams() should be the trusted source for this. + Available in Win-98/2000 and later. If that fail, fall-back to + registry information. + + NameServer Registry: + + On Windows 9X, the DNS server can be found in: +HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\NameServer + + On Windows NT/2000/XP/2003: +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\NameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ +NameServer + or +HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\ +DhcpNameServer + */ + + HKEY mykey; + HKEY subkey; + DWORD data_type; + DWORD bytes; + DWORD result; + char buf[256]; + + if (channel->nservers > -1) /* don't override ARES_OPT_SERVER */ + return ARES_SUCCESS; + + if (get_iphlpapi_dns_info(buf,sizeof(buf)) > 0) + { + status = config_nameserver(&servers, &nservers, buf); + if (status == ARES_SUCCESS) + goto okay; + } + + if (IS_NT()) + { + if (RegOpenKeyEx( + HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, + KEY_READ, &mykey + ) == ERROR_SUCCESS) + { + RegOpenKeyEx(mykey, "Interfaces", 0, + KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &subkey); + if (get_res_nt(mykey, NAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + else if (get_res_nt(mykey, DHCPNAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + /* Try the interfaces */ + else if (get_res_interfaces_nt(subkey, NAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + else if (get_res_interfaces_nt(subkey, DHCPNAMESERVER, &line)) + { + status = config_nameserver(&servers, &nservers, line); + free(line); + } + RegCloseKey(subkey); + RegCloseKey(mykey); + } + } + else + { + if (RegOpenKeyEx( + HKEY_LOCAL_MACHINE, WIN_NS_9X, 0, + KEY_READ, &mykey + ) == ERROR_SUCCESS) + { + if ((result = RegQueryValueEx( + mykey, NAMESERVER, NULL, &data_type, + NULL, &bytes + ) + ) == ERROR_SUCCESS || + result == ERROR_MORE_DATA) + { + if (bytes) + { + line = malloc(bytes+1); + if (RegQueryValueEx(mykey, NAMESERVER, NULL, &data_type, + (unsigned char *)line, &bytes) == + ERROR_SUCCESS) + { + status = config_nameserver(&servers, &nservers, line); + } + free(line); + } + } + } + RegCloseKey(mykey); + } + + if (status == ARES_SUCCESS) + status = ARES_EOF; + else + /* Catch the case when all the above checks fail (which happens when there + is no network card or the cable is unplugged) */ + status = ARES_EFILE; + +#elif defined(__riscos__) + + /* Under RISC OS, name servers are listed in the + system variable Inet$Resolvers, space separated. */ + + line = getenv("Inet$Resolvers"); + status = ARES_EOF; + if (line) { + char *resolvers = strdup(line), *pos, *space; + + if (!resolvers) + return ARES_ENOMEM; + + pos = resolvers; + do { + space = strchr(pos, ' '); + if (space) + *space = '\0'; + status = config_nameserver(&servers, &nservers, pos); + if (status != ARES_SUCCESS) + break; + pos = space + 1; + } while (space); + + if (status == ARES_SUCCESS) + status = ARES_EOF; + + free(resolvers); + } + +#elif defined(WATT32) + int i; + + sock_init(); + for (i = 0; def_nameservers[i]; i++) + ; + if (i == 0) + return ARES_SUCCESS; /* use localhost DNS server */ + + nservers = i; + servers = calloc(i, sizeof(struct server_state)); + if (!servers) + return ARES_ENOMEM; + + for (i = 0; def_nameservers[i]; i++) + servers[i].addr.s_addr = htonl(def_nameservers[i]); + status = ARES_EOF; + +#else + { + char *p; + FILE *fp; + size_t linesize; + int error; + + /* Don't read resolv.conf and friends if we don't have to */ + if (ARES_CONFIG_CHECK(channel)) + return ARES_SUCCESS; + + fp = fopen(PATH_RESOLV_CONF, "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "domain")) && channel->ndomains == -1) + status = config_domain(channel, p); + else if ((p = try_config(line, "lookup")) && !channel->lookups) + status = config_lookup(channel, p, "bind", "file"); + else if ((p = try_config(line, "search")) && channel->ndomains == -1) + status = set_search(channel, p); + else if ((p = try_config(line, "nameserver")) && channel->nservers == -1) + status = config_nameserver(&servers, &nservers, p); + else if ((p = try_config(line, "sortlist")) && channel->nsort == -1) + status = config_sortlist(&sortlist, &nsort, p); + else if ((p = try_config(line, "options"))) + status = set_options(channel, p); + else + status = ARES_SUCCESS; + if (status != ARES_SUCCESS) + break; + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", PATH_RESOLV_CONF)); + status = ARES_EFILE; + } + } + + if ((status == ARES_EOF) && (!channel->lookups)) { + /* Many systems (Solaris, Linux, BSD's) use nsswitch.conf */ + fp = fopen("/etc/nsswitch.conf", "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "hosts:")) && !channel->lookups) + status = config_lookup(channel, p, "dns", "files"); + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/nsswitch.conf")); + status = ARES_EFILE; + } + } + } + + if ((status == ARES_EOF) && (!channel->lookups)) { + /* Linux / GNU libc 2.x and possibly others have host.conf */ + fp = fopen("/etc/host.conf", "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "order")) && !channel->lookups) + status = config_lookup(channel, p, "bind", "hosts"); + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/host.conf")); + status = ARES_EFILE; + } + } + } + + if ((status == ARES_EOF) && (!channel->lookups)) { + /* Tru64 uses /etc/svc.conf */ + fp = fopen("/etc/svc.conf", "r"); + if (fp) { + while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS) + { + if ((p = try_config(line, "hosts=")) && !channel->lookups) + status = config_lookup(channel, p, "bind", "local"); + } + fclose(fp); + } + else { + error = ERRNO; + switch(error) { + case ENOENT: + case ESRCH: + status = ARES_EOF; + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/svc.conf")); + status = ARES_EFILE; + } + } + } + + if(line) + free(line); + } + +#endif + + /* Handle errors. */ + if (status != ARES_EOF) + { + if (servers != NULL) + free(servers); + if (sortlist != NULL) + free(sortlist); + return status; + } + + /* If we got any name server entries, fill them in. */ +#ifdef WIN32 +okay: +#endif + if (servers) + { + channel->servers = servers; + channel->nservers = nservers; + } + + /* If we got any sortlist entries, fill them in. */ + if (sortlist) + { + channel->sortlist = sortlist; + channel->nsort = nsort; + } + + return ARES_SUCCESS; +} + +static int init_by_defaults(ares_channel channel) +{ + char *hostname = NULL; + int rc = ARES_SUCCESS; +#ifdef HAVE_GETHOSTNAME + char *dot; +#endif + + if (channel->flags == -1) + channel->flags = 0; + if (channel->timeout == -1) + channel->timeout = DEFAULT_TIMEOUT; + if (channel->tries == -1) + channel->tries = DEFAULT_TRIES; + if (channel->ndots == -1) + channel->ndots = 1; + if (channel->rotate == -1) + channel->rotate = 0; + if (channel->udp_port == -1) + channel->udp_port = htons(NAMESERVER_PORT); + if (channel->tcp_port == -1) + channel->tcp_port = htons(NAMESERVER_PORT); + + if (channel->nservers == -1) { + /* If nobody specified servers, try a local named. */ + channel->servers = malloc(sizeof(struct server_state)); + if (!channel->servers) { + rc = ARES_ENOMEM; + goto error; + } + channel->servers[0].addr.s_addr = htonl(INADDR_LOOPBACK); + channel->nservers = 1; + } + +#ifdef ENAMETOOLONG +#define toolong(x) (x == -1) && ((ENAMETOOLONG == errno) || (EINVAL == errno)) +#else +#define toolong(x) (x == -1) && (EINVAL == errno) +#endif + + if (channel->ndomains == -1) { + /* Derive a default domain search list from the kernel hostname, + * or set it to empty if the hostname isn't helpful. + */ + size_t len = 64; + int res; + channel->ndomains = 0; /* default to none */ + +#ifdef HAVE_GETHOSTNAME + hostname = malloc(len); + if(!hostname) { + rc = ARES_ENOMEM; + goto error; + } + + do { + res = gethostname(hostname, len); + + if(toolong(res)) { + char *p; + len *= 2; + p = realloc(hostname, len); + if(!p) { + rc = ARES_ENOMEM; + goto error; + } + hostname = p; + continue; + } + else if(res) { + rc = ARES_EBADNAME; + goto error; + } + + } while(0); + + dot = strchr(hostname, '.'); + if (dot) { + /* a dot was found */ + channel->domains = malloc(sizeof(char *)); + if (!channel->domains) { + rc = ARES_ENOMEM; + goto error; + } + channel->domains[0] = strdup(dot + 1); + if (!channel->domains[0]) { + rc = ARES_ENOMEM; + goto error; + } + channel->ndomains = 1; + } +#endif + } + + if (channel->nsort == -1) { + channel->sortlist = NULL; + channel->nsort = 0; + } + + if (!channel->lookups) { + channel->lookups = strdup("fb"); + if (!channel->lookups) + rc = ARES_ENOMEM; + } + + error: + if(rc) { + if(channel->servers) + free(channel->servers); + + if(channel->domains && channel->domains[0]) + free(channel->domains[0]); + if(channel->domains) + free(channel->domains); + if(channel->lookups) + free(channel->lookups); + } + + if(hostname) + free(hostname); + + return rc; +} + +#if !defined(WIN32) && !defined(WATT32) +static int config_domain(ares_channel channel, char *str) +{ + char *q; + + /* Set a single search domain. */ + q = str; + while (*q && !ISSPACE(*q)) + q++; + *q = '\0'; + return set_search(channel, str); +} + +#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER == 910) && \ + defined(__OPTIMIZE__) && defined(__unix__) && defined(__i386__) + /* workaround icc 9.1 optimizer issue */ +# define vqualifier volatile +#else +# define vqualifier +#endif + +static int config_lookup(ares_channel channel, const char *str, + const char *bindch, const char *filech) +{ + char lookups[3], *l; + const char *vqualifier p; + + /* Set the lookup order. Only the first letter of each work + * is relevant, and it has to be "b" for DNS or "f" for the + * host file. Ignore everything else. + */ + l = lookups; + p = str; + while (*p) + { + if ((*p == *bindch || *p == *filech) && l < lookups + 2) { + if (*p == *bindch) *l++ = 'b'; + else *l++ = 'f'; + } + while (*p && !ISSPACE(*p) && (*p != ',')) + p++; + while (*p && (ISSPACE(*p) || (*p == ','))) + p++; + } + *l = '\0'; + channel->lookups = strdup(lookups); + return (channel->lookups) ? ARES_SUCCESS : ARES_ENOMEM; +} +#endif /* !WIN32 & !WATT32 */ + +#ifndef WATT32 +static int config_nameserver(struct server_state **servers, int *nservers, + char *str) +{ + struct in_addr addr; + struct server_state *newserv; + /* On Windows, there may be more than one nameserver specified in the same + * registry key, so we parse it as a space or comma seperated list. + */ +#ifdef WIN32 + char *p = str; + char *begin = str; + int more = 1; + while (more) + { + more = 0; + while (*p && !ISSPACE(*p) && *p != ',') + p++; + + if (*p) + { + *p = '\0'; + more = 1; + } + + /* Skip multiple spaces or trailing spaces */ + if (!*begin) + { + begin = ++p; + continue; + } + + /* This is the part that actually sets the nameserver */ + addr.s_addr = inet_addr(begin); + if (addr.s_addr == INADDR_NONE) + continue; + newserv = realloc(*servers, (*nservers + 1) * sizeof(struct server_state)); + if (!newserv) + return ARES_ENOMEM; + newserv[*nservers].addr = addr; + *servers = newserv; + (*nservers)++; + + if (!more) + break; + begin = ++p; + } +#else + /* Add a nameserver entry, if this is a valid address. */ + addr.s_addr = inet_addr(str); + if (addr.s_addr == INADDR_NONE) + return ARES_SUCCESS; + newserv = realloc(*servers, (*nservers + 1) * sizeof(struct server_state)); + if (!newserv) + return ARES_ENOMEM; + newserv[*nservers].addr = addr; + *servers = newserv; + (*nservers)++; +#endif + return ARES_SUCCESS; +} + +#ifndef WIN32 +static int config_sortlist(struct apattern **sortlist, int *nsort, + const char *str) +{ + struct apattern pat; + const char *q; + + /* Add sortlist entries. */ + while (*str && *str != ';') + { + int bits; + char ipbuf[16], ipbufpfx[32]; + /* Find just the IP */ + q = str; + while (*q && *q != '/' && *q != ';' && !ISSPACE(*q)) + q++; + memcpy(ipbuf, str, (int)(q-str)); + ipbuf[(int)(q-str)] = '\0'; + /* Find the prefix */ + if (*q == '/') + { + const char *str2 = q+1; + while (*q && *q != ';' && !ISSPACE(*q)) + q++; + memcpy(ipbufpfx, str, (int)(q-str)); + ipbufpfx[(int)(q-str)] = '\0'; + str = str2; + } + else + ipbufpfx[0] = '\0'; + /* Lets see if it is CIDR */ + /* First we'll try IPv6 */ + if ((bits = ares_inet_net_pton(AF_INET6, ipbufpfx[0] ? ipbufpfx : ipbuf, + &pat.addrV6, + sizeof(pat.addrV6))) > 0) + { + pat.type = PATTERN_CIDR; + pat.mask.bits = (unsigned short)bits; + pat.family = AF_INET6; + if (!sortlist_alloc(sortlist, nsort, &pat)) + return ARES_ENOMEM; + } + if (ipbufpfx[0] && + (bits = ares_inet_net_pton(AF_INET, ipbufpfx, &pat.addrV4, + sizeof(pat.addrV4))) > 0) + { + pat.type = PATTERN_CIDR; + pat.mask.bits = (unsigned short)bits; + pat.family = AF_INET; + if (!sortlist_alloc(sortlist, nsort, &pat)) + return ARES_ENOMEM; + } + /* See if it is just a regular IP */ + else if (ip_addr(ipbuf, (int)(q-str), &pat.addrV4) == 0) + { + if (ipbufpfx[0]) + { + memcpy(ipbuf, str, (int)(q-str)); + ipbuf[(int)(q-str)] = '\0'; + if (ip_addr(ipbuf, (int)(q - str), &pat.mask.addr4) != 0) + natural_mask(&pat); + } + else + natural_mask(&pat); + pat.family = AF_INET; + pat.type = PATTERN_MASK; + if (!sortlist_alloc(sortlist, nsort, &pat)) + return ARES_ENOMEM; + } + else + { + while (*q && *q != ';' && !ISSPACE(*q)) + q++; + } + str = q; + while (ISSPACE(*str)) + str++; + } + + return ARES_SUCCESS; +} +#endif /* !WIN32 */ +#endif /* !WATT32 */ + +static int set_search(ares_channel channel, const char *str) +{ + int n; + const char *p, *q; + + if(channel->ndomains != -1) { + /* if we already have some domains present, free them first */ + for(n=0; n < channel->ndomains; n++) + free(channel->domains[n]); + free(channel->domains); + channel->domains = NULL; + channel->ndomains = -1; + } + + /* Count the domains given. */ + n = 0; + p = str; + while (*p) + { + while (*p && !ISSPACE(*p)) + p++; + while (ISSPACE(*p)) + p++; + n++; + } + + if (!n) + { + channel->ndomains = 0; + return ARES_SUCCESS; + } + + channel->domains = malloc(n * sizeof(char *)); + if (!channel->domains) + return ARES_ENOMEM; + + /* Now copy the domains. */ + n = 0; + p = str; + while (*p) + { + channel->ndomains = n; + q = p; + while (*q && !ISSPACE(*q)) + q++; + channel->domains[n] = malloc(q - p + 1); + if (!channel->domains[n]) + return ARES_ENOMEM; + memcpy(channel->domains[n], p, q - p); + channel->domains[n][q - p] = 0; + p = q; + while (ISSPACE(*p)) + p++; + n++; + } + channel->ndomains = n; + + return ARES_SUCCESS; +} + +static int set_options(ares_channel channel, const char *str) +{ + const char *p, *q, *val; + + p = str; + while (*p) + { + q = p; + while (*q && !ISSPACE(*q)) + q++; + val = try_option(p, q, "ndots:"); + if (val && channel->ndots == -1) + channel->ndots = atoi(val); + val = try_option(p, q, "retrans:"); + if (val && channel->timeout == -1) + channel->timeout = atoi(val); + val = try_option(p, q, "retry:"); + if (val && channel->tries == -1) + channel->tries = atoi(val); + val = try_option(p, q, "rotate"); + if (val && channel->rotate == -1) + channel->rotate = 1; + p = q; + while (ISSPACE(*p)) + p++; + } + + return ARES_SUCCESS; +} + +static const char *try_option(const char *p, const char *q, const char *opt) +{ + size_t len = strlen(opt); + return ((size_t)(q - p) >= len && !strncmp(p, opt, len)) ? &p[len] : NULL; +} + +#if !defined(WIN32) && !defined(WATT32) +static char *try_config(char *s, const char *opt) +{ + size_t len; + char *p; + char *q; + + if (!s || !opt) + /* no line or no option */ + return NULL; + + /* trim line comment */ + p = s; + while (*p && (*p != '#')) + p++; + *p = '\0'; + + /* trim trailing whitespace */ + q = p - 1; + while ((q >= s) && ISSPACE(*q)) + q--; + *++q = '\0'; + + /* skip leading whitespace */ + p = s; + while (*p && ISSPACE(*p)) + p++; + + if (!*p) + /* empty line */ + return NULL; + + if ((len = strlen(opt)) == 0) + /* empty option */ + return NULL; + + if (strncmp(p, opt, len) != 0) + /* line and option do not match */ + return NULL; + + /* skip over given option name */ + p += len; + + if (!*p) + /* no option value */ + return NULL; + + if ((opt[len-1] != ':') && (opt[len-1] != '=') && !ISSPACE(*p)) + /* whitespace between option name and value is mandatory + for given option names which do not end with ':' or '=' */ + return NULL; + + /* skip over whitespace */ + while (*p && ISSPACE(*p)) + p++; + + if (!*p) + /* no option value */ + return NULL; + + /* return pointer to option value */ + return p; +} + +static int sortlist_alloc(struct apattern **sortlist, int *nsort, + struct apattern *pat) +{ + struct apattern *newsort; + newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern)); + if (!newsort) + return 0; + newsort[*nsort] = *pat; + *sortlist = newsort; + (*nsort)++; + return 1; +} + +static int ip_addr(const char *ipbuf, int len, struct in_addr *addr) +{ + + /* Four octets and three periods yields at most 15 characters. */ + if (len > 15) + return -1; + + addr->s_addr = inet_addr(ipbuf); + if (addr->s_addr == INADDR_NONE && strcmp(ipbuf, "255.255.255.255") != 0) + return -1; + return 0; +} + +static void natural_mask(struct apattern *pat) +{ + struct in_addr addr; + + /* Store a host-byte-order copy of pat in a struct in_addr. Icky, + * but portable. + */ + addr.s_addr = ntohl(pat->addrV4.s_addr); + + /* This is out of date in the CIDR world, but some people might + * still rely on it. + */ + if (IN_CLASSA(addr.s_addr)) + pat->mask.addr4.s_addr = htonl(IN_CLASSA_NET); + else if (IN_CLASSB(addr.s_addr)) + pat->mask.addr4.s_addr = htonl(IN_CLASSB_NET); + else + pat->mask.addr4.s_addr = htonl(IN_CLASSC_NET); +} +#endif /* !WIN32 && !WATT32 */ + +/* initialize an rc4 key. If possible a cryptographically secure random key + is generated using a suitable function (for example win32's RtlGenRandom as + described in + http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx + otherwise the code defaults to cross-platform albeit less secure mechanism + using rand +*/ +static void randomize_key(unsigned char* key,int key_data_len) +{ + int randomized = 0; + int counter=0; +#ifdef WIN32 + BOOLEAN res; + if (ares_fpSystemFunction036) + { + res = (*ares_fpSystemFunction036) (key, key_data_len); + if (res) + randomized = 1; + } +#else /* !WIN32 */ +#ifdef RANDOM_FILE + FILE *f = fopen(RANDOM_FILE, "rb"); + if(f) { + counter = fread(key, 1, key_data_len, f); + fclose(f); + } +#endif +#endif /* WIN32 */ + + if ( !randomized ) { + for (;counter<key_data_len;counter++) + key[counter]=(unsigned char)(rand() % 256); + } +} + +static int init_id_key(rc4_key* key,int key_data_len) +{ + unsigned char index1; + unsigned char index2; + unsigned char* state; + short counter; + unsigned char *key_data_ptr = 0; + + key_data_ptr = calloc(1,key_data_len); + if (!key_data_ptr) + return ARES_ENOMEM; + + state = &key->state[0]; + for(counter = 0; counter < 256; counter++) + /* unnecessary AND but it keeps some compilers happier */ + state[counter] = (unsigned char)(counter & 0xff); + randomize_key(key->state,key_data_len); + key->x = 0; + key->y = 0; + index1 = 0; + index2 = 0; + for(counter = 0; counter < 256; counter++) + { + index2 = (unsigned char)((key_data_ptr[index1] + state[counter] + + index2) % 256); + ARES_SWAP_BYTE(&state[counter], &state[index2]); + + index1 = (unsigned char)((index1 + 1) % key_data_len); + } + free(key_data_ptr); + return ARES_SUCCESS; +} + +unsigned short ares__generate_new_id(rc4_key* key) +{ + unsigned short r=0; + ares__rc4(key, (unsigned char *)&r, sizeof(r)); + return r; +} + +void ares_set_socket_callback(ares_channel channel, + ares_sock_create_callback cb, + void *data) +{ + channel->sock_create_cb = cb; + channel->sock_create_cb_data = data; +} diff --git a/3rdParty/CAres/src/ares_ipv6.h b/3rdParty/CAres/src/ares_ipv6.h new file mode 100644 index 0000000..18914d1 --- /dev/null +++ b/3rdParty/CAres/src/ares_ipv6.h @@ -0,0 +1,84 @@ +/* $Id: ares_ipv6.h,v 1.9 2009-05-02 02:36:48 yangtse Exp $ */ + +/* Copyright (C) 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef ARES_IPV6_H +#define ARES_IPV6_H + +#ifndef HAVE_PF_INET6 +#define PF_INET6 AF_INET6 +#endif + +#if !defined(HAVE_STRUCT_IN6_ADDR) && !defined(s6_addr) +struct in6_addr { + union { + unsigned char _S6_u8[16]; + } _S6_un; +}; +#define s6_addr _S6_un._S6_u8 +#endif + +#ifndef HAVE_STRUCT_SOCKADDR_IN6 +struct sockaddr_in6 +{ + unsigned short sin6_family; + unsigned short sin6_port; + unsigned long sin6_flowinfo; + struct in6_addr sin6_addr; + unsigned int sin6_scope_id; +}; +#endif + +#ifndef HAVE_STRUCT_ADDRINFO +struct addrinfo +{ + int ai_flags; + int ai_family; + int ai_socktype; + int ai_protocol; + ares_socklen_t ai_addrlen; /* Follow rfc3493 struct addrinfo */ + char *ai_canonname; + struct sockaddr *ai_addr; + struct addrinfo *ai_next; +}; +#endif + +#ifndef NS_IN6ADDRSZ +#if SIZEOF_STRUCT_IN6_ADDR == 0 +/* We cannot have it set to zero, so we pick a fixed value here */ +#define NS_IN6ADDRSZ 16 +#else +#define NS_IN6ADDRSZ SIZEOF_STRUCT_IN6_ADDR +#endif +#endif + +#ifndef NS_INADDRSZ +#define NS_INADDRSZ SIZEOF_STRUCT_IN_ADDR +#endif + +#ifndef NS_INT16SZ +#define NS_INT16SZ 2 +#endif + +#ifndef IF_NAMESIZE +#ifdef IFNAMSIZ +#define IF_NAMESIZE IFNAMSIZ +#else +#define IF_NAMESIZE 256 +#endif +#endif + +#endif /* ARES_IPV6_H */ diff --git a/3rdParty/CAres/src/ares_library_init.c b/3rdParty/CAres/src/ares_library_init.c new file mode 100644 index 0000000..049cfa4 --- /dev/null +++ b/3rdParty/CAres/src/ares_library_init.c @@ -0,0 +1,133 @@ +/* $Id: ares_library_init.c,v 1.11 2009-11-11 08:56:47 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include "ares.h" +#include "ares_library_init.h" +#include "ares_private.h" + +/* library-private global and unique instance vars */ + +#ifdef USE_WINSOCK +fpGetNetworkParams_t ares_fpGetNetworkParams = ZERO_NULL; +fpSystemFunction036_t ares_fpSystemFunction036 = ZERO_NULL; +#endif + +/* library-private global vars with source visibility restricted to this file */ + +static unsigned int ares_initialized; +static int ares_init_flags; + +#ifdef USE_WINSOCK +static HMODULE hnd_iphlpapi; +static HMODULE hnd_advapi32; +#endif + + +static int ares_win32_init(void) +{ +#ifdef USE_WINSOCK + + hnd_iphlpapi = 0; + hnd_iphlpapi = LoadLibrary("iphlpapi.dll"); + if (!hnd_iphlpapi) + return ARES_ELOADIPHLPAPI; + + ares_fpGetNetworkParams = (fpGetNetworkParams_t) + GetProcAddress(hnd_iphlpapi, "GetNetworkParams"); + if (!ares_fpGetNetworkParams) + { + FreeLibrary(hnd_iphlpapi); + return ARES_EADDRGETNETWORKPARAMS; + } + + /* + * When advapi32.dll is unavailable or advapi32.dll has no SystemFunction036, + * also known as RtlGenRandom, which is the case for Windows versions prior + * to WinXP then c-ares uses portable rand() function. Then don't error here. + */ + + hnd_advapi32 = 0; + hnd_advapi32 = LoadLibrary("advapi32.dll"); + if (hnd_advapi32) + { + ares_fpSystemFunction036 = (fpSystemFunction036_t) + GetProcAddress(hnd_advapi32, "SystemFunction036"); + } + +#endif + return ARES_SUCCESS; +} + + +static void ares_win32_cleanup(void) +{ +#ifdef USE_WINSOCK + if (hnd_advapi32) + FreeLibrary(hnd_advapi32); + if (hnd_iphlpapi) + FreeLibrary(hnd_iphlpapi); +#endif +} + + +int ares_library_init(int flags) +{ + int res; + + if (ares_initialized) + return ARES_SUCCESS; + ares_initialized++; + + if (flags & ARES_LIB_INIT_WIN32) + { + res = ares_win32_init(); + if (res != ARES_SUCCESS) + return res; + } + + ares_init_flags = flags; + + return ARES_SUCCESS; +} + + +void ares_library_cleanup(void) +{ + if (!ares_initialized) + return; + ares_initialized--; + + if (ares_init_flags & ARES_LIB_INIT_WIN32) + ares_win32_cleanup(); + + ares_init_flags = ARES_LIB_INIT_NONE; +} + + +int ares_library_initialized(void) +{ +#ifdef USE_WINSOCK + if (!ares_initialized) + return ARES_ENOTINITIALIZED; +#endif + return ARES_SUCCESS; +} + + diff --git a/3rdParty/CAres/src/ares_library_init.h b/3rdParty/CAres/src/ares_library_init.h new file mode 100644 index 0000000..a81d855 --- /dev/null +++ b/3rdParty/CAres/src/ares_library_init.h @@ -0,0 +1,40 @@ +#ifndef HEADER_CARES_LIBRARY_INIT_H +#define HEADER_CARES_LIBRARY_INIT_H + +/* $Id: ares_library_init.h,v 1.5 2009-11-11 08:56:47 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef USE_WINSOCK + +#include <iphlpapi.h> + +typedef DWORD (WINAPI *fpGetNetworkParams_t) (FIXED_INFO*, DWORD*); +typedef BOOLEAN (APIENTRY *fpSystemFunction036_t) (void*, ULONG); + +/* Forward-declaration of variables defined in ares_library_init.c */ +/* that are global and unique instances for whole c-ares library. */ + +extern fpGetNetworkParams_t ares_fpGetNetworkParams; +extern fpSystemFunction036_t ares_fpSystemFunction036; + +#endif /* USE_WINSOCK */ + +#endif /* HEADER_CARES_LIBRARY_INIT_H */ + diff --git a/3rdParty/CAres/src/ares_llist.c b/3rdParty/CAres/src/ares_llist.c new file mode 100644 index 0000000..c820ed1 --- /dev/null +++ b/3rdParty/CAres/src/ares_llist.c @@ -0,0 +1,87 @@ +/* $Id: ares_llist.c,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include "ares.h" +#include "ares_private.h" + +/* Routines for managing doubly-linked circular linked lists with a + * dummy head. + */ + +/* Initialize a new head node */ +void ares__init_list_head(struct list_node* head) { + head->prev = head; + head->next = head; + head->data = NULL; +} + +/* Initialize a list node */ +void ares__init_list_node(struct list_node* node, void* d) { + node->prev = NULL; + node->next = NULL; + node->data = d; +} + +/* Returns true iff the given list is empty */ +int ares__is_list_empty(struct list_node* head) { + return ((head->next == head) && (head->prev == head)); +} + +/* Inserts new_node before old_node */ +void ares__insert_in_list(struct list_node* new_node, + struct list_node* old_node) { + new_node->next = old_node; + new_node->prev = old_node->prev; + old_node->prev->next = new_node; + old_node->prev = new_node; +} + +/* Removes the node from the list it's in, if any */ +void ares__remove_from_list(struct list_node* node) { + if (node->next != NULL) { + node->prev->next = node->next; + node->next->prev = node->prev; + node->prev = NULL; + node->next = NULL; + } +} + +/* Swap the contents of two lists */ +void ares__swap_lists(struct list_node* head_a, + struct list_node* head_b) { + int is_a_empty = ares__is_list_empty(head_a); + int is_b_empty = ares__is_list_empty(head_b); + struct list_node old_a = *head_a; + struct list_node old_b = *head_b; + + if (is_a_empty) { + ares__init_list_head(head_b); + } else { + *head_b = old_a; + old_a.next->prev = head_b; + old_a.prev->next = head_b; + } + if (is_b_empty) { + ares__init_list_head(head_a); + } else { + *head_a = old_b; + old_b.next->prev = head_a; + old_b.prev->next = head_a; + } +} diff --git a/3rdParty/CAres/src/ares_llist.h b/3rdParty/CAres/src/ares_llist.h new file mode 100644 index 0000000..4875b3f --- /dev/null +++ b/3rdParty/CAres/src/ares_llist.h @@ -0,0 +1,43 @@ +#ifndef __ARES_LLIST_H +#define __ARES_LLIST_H + +/* $Id: ares_llist.h,v 1.1 2007-10-02 02:18:01 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + + +/* Node definition for circular, doubly-linked list */ +struct list_node { + struct list_node *prev; + struct list_node *next; + void* data; +}; + +void ares__init_list_head(struct list_node* head); + +void ares__init_list_node(struct list_node* node, void* d); + +int ares__is_list_empty(struct list_node* head); + +void ares__insert_in_list(struct list_node* new_node, + struct list_node* old_node); + +void ares__remove_from_list(struct list_node* node); + +void ares__swap_lists(struct list_node* head_a, + struct list_node* head_b); + +#endif /* __ARES_LLIST_H */ diff --git a/3rdParty/CAres/src/ares_mkquery.c b/3rdParty/CAres/src/ares_mkquery.c new file mode 100644 index 0000000..04d2b6d --- /dev/null +++ b/3rdParty/CAres/src/ares_mkquery.c @@ -0,0 +1,196 @@ +/* $Id: ares_mkquery.c,v 1.17 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +/* Header format, from RFC 1035: + * 1 1 1 1 1 1 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | ID | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * |QR| Opcode |AA|TC|RD|RA| Z | RCODE | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | QDCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | ANCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | NSCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | ARCOUNT | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * + * AA, TC, RA, and RCODE are only set in responses. Brief description + * of the remaining fields: + * ID Identifier to match responses with queries + * QR Query (0) or response (1) + * Opcode For our purposes, always QUERY + * RD Recursion desired + * Z Reserved (zero) + * QDCOUNT Number of queries + * ANCOUNT Number of answers + * NSCOUNT Number of name server records + * ARCOUNT Number of additional records + * + * Question format, from RFC 1035: + * 1 1 1 1 1 1 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | | + * / QNAME / + * / / + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | QTYPE | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * | QCLASS | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * + * The query name is encoded as a series of labels, each represented + * as a one-byte length (maximum 63) followed by the text of the + * label. The list is terminated by a label of length zero (which can + * be thought of as the root domain). + */ + +int ares_mkquery(const char *name, int dnsclass, int type, unsigned short id, + int rd, unsigned char **buf, int *buflen) +{ + int len; + unsigned char *q; + const char *p; + + /* Set our results early, in case we bail out early with an error. */ + *buflen = 0; + *buf = NULL; + + /* Compute the length of the encoded name so we can check buflen. + * Start counting at 1 for the zero-length label at the end. */ + len = 1; + for (p = name; *p; p++) + { + if (*p == '\\' && *(p + 1) != 0) + p++; + len++; + } + /* If there are n periods in the name, there are n + 1 labels, and + * thus n + 1 length fields, unless the name is empty or ends with a + * period. So add 1 unless name is empty or ends with a period. + */ + if (*name && *(p - 1) != '.') + len++; + + /* Immediately reject names that are longer than the maximum of 255 + * bytes that's specified in RFC 1035 ("To simplify implementations, + * the total length of a domain name (i.e., label octets and label + * length octets) is restricted to 255 octets or less."). We aren't + * doing this just to be a stickler about RFCs. For names that are + * too long, 'dnscache' closes its TCP connection to us immediately + * (when using TCP) and ignores the request when using UDP, and + * BIND's named returns ServFail (TCP or UDP). Sending a request + * that we know will cause 'dnscache' to close the TCP connection is + * painful, since that makes any other outstanding requests on that + * connection fail. And sending a UDP request that we know + * 'dnscache' will ignore is bad because resources will be tied up + * until we time-out the request. + */ + if (len > MAXCDNAME) + return ARES_EBADNAME; + + *buflen = len + HFIXEDSZ + QFIXEDSZ; + *buf = malloc(*buflen); + if (!*buf) + return ARES_ENOMEM; + + /* Set up the header. */ + q = *buf; + memset(q, 0, HFIXEDSZ); + DNS_HEADER_SET_QID(q, id); + DNS_HEADER_SET_OPCODE(q, QUERY); + if (rd) { + DNS_HEADER_SET_RD(q, 1); + } + else { + DNS_HEADER_SET_RD(q, 0); + } + DNS_HEADER_SET_QDCOUNT(q, 1); + + /* A name of "." is a screw case for the loop below, so adjust it. */ + if (strcmp(name, ".") == 0) + name++; + + /* Start writing out the name after the header. */ + q += HFIXEDSZ; + while (*name) + { + if (*name == '.') + return ARES_EBADNAME; + + /* Count the number of bytes in this label. */ + len = 0; + for (p = name; *p && *p != '.'; p++) + { + if (*p == '\\' && *(p + 1) != 0) + p++; + len++; + } + if (len > MAXLABEL) + return ARES_EBADNAME; + + /* Encode the length and copy the data. */ + *q++ = (unsigned char)len; + for (p = name; *p && *p != '.'; p++) + { + if (*p == '\\' && *(p + 1) != 0) + p++; + *q++ = *p; + } + + /* Go to the next label and repeat, unless we hit the end. */ + if (!*p) + break; + name = p + 1; + } + + /* Add the zero-length label at the end. */ + *q++ = 0; + + /* Finish off the question with the type and class. */ + DNS_QUESTION_SET_TYPE(q, type); + DNS_QUESTION_SET_CLASS(q, dnsclass); + + return ARES_SUCCESS; +} diff --git a/3rdParty/CAres/src/ares_parse_a_reply.c b/3rdParty/CAres/src/ares_parse_a_reply.c new file mode 100644 index 0000000..801c193 --- /dev/null +++ b/3rdParty/CAres/src/ares_parse_a_reply.c @@ -0,0 +1,257 @@ +/* $Id: ares_parse_a_reply.c,v 1.20 2009-11-23 01:24:17 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif + +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +int ares_parse_a_reply(const unsigned char *abuf, int alen, + struct hostent **host, + struct ares_addrttl *addrttls, int *naddrttls) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs; + int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */ + int naliases; + long len; + const unsigned char *aptr; + char *hostname, *rr_name, *rr_data, **aliases; + struct in_addr *addrs; + struct hostent *hostent; + const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0; + + /* Set *host to NULL for all failure cases. */ + if (host) + *host = NULL; + /* Same with *naddrttls. */ + if (naddrttls) + *naddrttls = 0; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + if (qdcount != 1) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free(hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + if (host) + { + /* Allocate addresses and aliases; ancount gives an upper bound for + both. */ + addrs = malloc(ancount * sizeof(struct in_addr)); + if (!addrs) + { + free(hostname); + return ARES_ENOMEM; + } + aliases = malloc((ancount + 1) * sizeof(char *)); + if (!aliases) + { + free(hostname); + free(addrs); + return ARES_ENOMEM; + } + } + else + { + addrs = NULL; + aliases = NULL; + } + + naddrs = 0; + naliases = 0; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < (int)ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + break; + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE(aptr); + rr_class = DNS_RR_CLASS(aptr); + rr_len = DNS_RR_LEN(aptr); + rr_ttl = DNS_RR_TTL(aptr); + aptr += RRFIXEDSZ; + + if (rr_class == C_IN && rr_type == T_A + && rr_len == sizeof(struct in_addr) + && strcasecmp(rr_name, hostname) == 0) + { + if (addrs) + { + if (aptr + sizeof(struct in_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&addrs[naddrs], aptr, sizeof(struct in_addr)); + } + if (naddrs < max_addr_ttls) + { + struct ares_addrttl * const at = &addrttls[naddrs]; + if (aptr + sizeof(struct in_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&at->ipaddr, aptr, sizeof(struct in_addr)); + at->ttl = rr_ttl; + } + naddrs++; + status = ARES_SUCCESS; + } + + if (rr_class == C_IN && rr_type == T_CNAME) + { + /* Record the RR name as an alias. */ + if (aliases) + aliases[naliases] = rr_name; + else + free(rr_name); + naliases++; + + /* Decode the RR data and replace the hostname with it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + free(hostname); + hostname = rr_data; + + /* Take the min of the TTLs we see in the CNAME chain. */ + if (cname_ttl > rr_ttl) + cname_ttl = rr_ttl; + } + else + free(rr_name); + + aptr += rr_len; + if (aptr > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + } + + if (status == ARES_SUCCESS && naddrs == 0) + status = ARES_ENODATA; + if (status == ARES_SUCCESS) + { + /* We got our answer. */ + if (naddrttls) + { + const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls; + for (i = 0; i < n; i++) + { + /* Ensure that each A TTL is no larger than the CNAME TTL. */ + if (addrttls[i].ttl > cname_ttl) + addrttls[i].ttl = cname_ttl; + } + *naddrttls = n; + } + if (aliases) + aliases[naliases] = NULL; + if (host) + { + /* Allocate memory to build the host entry. */ + hostent = malloc(sizeof(struct hostent)); + if (hostent) + { + hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *)); + if (hostent->h_addr_list) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + hostent->h_aliases = aliases; + hostent->h_addrtype = AF_INET; + hostent->h_length = sizeof(struct in_addr); + for (i = 0; i < naddrs; i++) + hostent->h_addr_list[i] = (char *) &addrs[i]; + hostent->h_addr_list[naddrs] = NULL; + *host = hostent; + return ARES_SUCCESS; + } + free(hostent); + } + status = ARES_ENOMEM; + } + } + if (aliases) + { + for (i = 0; i < naliases; i++) + free(aliases[i]); + free(aliases); + } + free(addrs); + free(hostname); + return status; +} diff --git a/3rdParty/CAres/src/ares_parse_aaaa_reply.c b/3rdParty/CAres/src/ares_parse_aaaa_reply.c new file mode 100644 index 0000000..c2329cc --- /dev/null +++ b/3rdParty/CAres/src/ares_parse_aaaa_reply.c @@ -0,0 +1,257 @@ +/* $Id: ares_parse_aaaa_reply.c,v 1.16 2009-11-23 01:24:17 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright 2005 Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif + +#include "ares.h" +#include "ares_dns.h" +#include "inet_net_pton.h" +#include "ares_private.h" + +int ares_parse_aaaa_reply(const unsigned char *abuf, int alen, + struct hostent **host, struct ares_addr6ttl *addrttls, + int *naddrttls) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs; + int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */ + int naliases; + long len; + const unsigned char *aptr; + char *hostname, *rr_name, *rr_data, **aliases; + struct in6_addr *addrs; + struct hostent *hostent; + const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0; + + /* Set *host to NULL for all failure cases. */ + if (host) + *host = NULL; + /* Same with *naddrttls. */ + if (naddrttls) + *naddrttls = 0; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + if (qdcount != 1) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free(hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Allocate addresses and aliases; ancount gives an upper bound for both. */ + if (host) + { + addrs = malloc(ancount * sizeof(struct in6_addr)); + if (!addrs) + { + free(hostname); + return ARES_ENOMEM; + } + aliases = malloc((ancount + 1) * sizeof(char *)); + if (!aliases) + { + free(hostname); + free(addrs); + return ARES_ENOMEM; + } + } + else + { + addrs = NULL; + aliases = NULL; + } + naddrs = 0; + naliases = 0; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < (int)ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + break; + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE(aptr); + rr_class = DNS_RR_CLASS(aptr); + rr_len = DNS_RR_LEN(aptr); + rr_ttl = DNS_RR_TTL(aptr); + aptr += RRFIXEDSZ; + + if (rr_class == C_IN && rr_type == T_AAAA + && rr_len == sizeof(struct in6_addr) + && strcasecmp(rr_name, hostname) == 0) + { + if (addrs) + { + if (aptr + sizeof(struct in6_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&addrs[naddrs], aptr, sizeof(struct in6_addr)); + } + if (naddrs < max_addr_ttls) + { + struct ares_addr6ttl * const at = &addrttls[naddrs]; + if (aptr + sizeof(struct in6_addr) > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + memcpy(&at->ip6addr, aptr, sizeof(struct in6_addr)); + at->ttl = rr_ttl; + } + naddrs++; + status = ARES_SUCCESS; + } + + if (rr_class == C_IN && rr_type == T_CNAME) + { + /* Record the RR name as an alias. */ + if (aliases) + aliases[naliases] = rr_name; + else + free(rr_name); + naliases++; + + /* Decode the RR data and replace the hostname with it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + free(hostname); + hostname = rr_data; + + /* Take the min of the TTLs we see in the CNAME chain. */ + if (cname_ttl > rr_ttl) + cname_ttl = rr_ttl; + } + else + free(rr_name); + + aptr += rr_len; + if (aptr > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + } + + if (status == ARES_SUCCESS && naddrs == 0) + status = ARES_ENODATA; + if (status == ARES_SUCCESS) + { + /* We got our answer. */ + if (naddrttls) + { + const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls; + for (i = 0; i < n; i++) + { + /* Ensure that each A TTL is no larger than the CNAME TTL. */ + if (addrttls[i].ttl > cname_ttl) + addrttls[i].ttl = cname_ttl; + } + *naddrttls = n; + } + if (aliases) + aliases[naliases] = NULL; + if (host) + { + /* Allocate memory to build the host entry. */ + hostent = malloc(sizeof(struct hostent)); + if (hostent) + { + hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *)); + if (hostent->h_addr_list) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + hostent->h_aliases = aliases; + hostent->h_addrtype = AF_INET6; + hostent->h_length = sizeof(struct in6_addr); + for (i = 0; i < naddrs; i++) + hostent->h_addr_list[i] = (char *) &addrs[i]; + hostent->h_addr_list[naddrs] = NULL; + *host = hostent; + return ARES_SUCCESS; + } + free(hostent); + } + status = ARES_ENOMEM; + } + } + if (aliases) + { + for (i = 0; i < naliases; i++) + free(aliases[i]); + free(aliases); + } + free(addrs); + free(hostname); + return status; +} diff --git a/3rdParty/CAres/src/ares_parse_ns_reply.c b/3rdParty/CAres/src/ares_parse_ns_reply.c new file mode 100644 index 0000000..25c6329 --- /dev/null +++ b/3rdParty/CAres/src/ares_parse_ns_reply.c @@ -0,0 +1,182 @@ +/* $Id */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* + * ares_parse_ns_reply created by Vlad Dinulescu <vlad.dinulescu@avira.com> + * on behalf of AVIRA Gmbh - http://www.avira.com + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +int ares_parse_ns_reply( const unsigned char* abuf, int alen, + struct hostent** host ) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len; + int nameservers_num; + long len; + const unsigned char *aptr; + char* hostname, *rr_name, *rr_data, **nameservers; + struct hostent *hostent; + + /* Set *host to NULL for all failure cases. */ + *host = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if ( alen < HFIXEDSZ ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT( abuf ); + ancount = DNS_HEADER_ANCOUNT( abuf ); + if ( qdcount != 1 ) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response( aptr, abuf, alen, &hostname, &len); + if ( status != ARES_SUCCESS ) + return status; + if ( aptr + len + QFIXEDSZ > abuf + alen ) + { + free( hostname ); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Allocate nameservers array; ancount gives an upper bound */ + nameservers = malloc( ( ancount + 1 ) * sizeof( char * ) ); + if ( !nameservers ) + { + free( hostname ); + return ARES_ENOMEM; + } + nameservers_num = 0; + + /* Examine each answer resource record (RR) in turn. */ + for ( i = 0; i < ( int ) ancount; i++ ) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response( aptr, abuf, alen, &rr_name, &len ); + if ( status != ARES_SUCCESS ) + break; + aptr += len; + if ( aptr + RRFIXEDSZ > abuf + alen ) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE( aptr ); + rr_class = DNS_RR_CLASS( aptr ); + rr_len = DNS_RR_LEN( aptr ); + aptr += RRFIXEDSZ; + + if ( rr_class == C_IN && rr_type == T_NS ) + { + /* Decode the RR data and add it to the nameservers list */ + status = ares__expand_name_for_response( aptr, abuf, alen, &rr_data, + &len); + if ( status != ARES_SUCCESS ) + { + break; + } + + nameservers[nameservers_num] = malloc(strlen(rr_data)+1); + + if (nameservers[nameservers_num]==NULL) + { + free(rr_name); + free(rr_data); + status=ARES_ENOMEM; + break; + } + strcpy(nameservers[nameservers_num],rr_data); + free(rr_data); + + nameservers_num++; + } + + free( rr_name ); + + aptr += rr_len; + if ( aptr > abuf + alen ) + { + status = ARES_EBADRESP; + break; + } + } + + if ( status == ARES_SUCCESS && nameservers_num == 0 ) + { + status = ARES_ENODATA; + } + if ( status == ARES_SUCCESS ) + { + /* We got our answer. Allocate memory to build the host entry. */ + nameservers[nameservers_num] = NULL; + hostent = malloc( sizeof( struct hostent ) ); + if ( hostent ) + { + hostent->h_addr_list = malloc( 1 * sizeof( char * ) ); + if ( hostent->h_addr_list ) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + hostent->h_aliases = nameservers; + hostent->h_addrtype = AF_INET; + hostent->h_length = sizeof( struct in_addr ); + hostent->h_addr_list[0] = NULL; + *host = hostent; + return ARES_SUCCESS; + } + free( hostent ); + } + status = ARES_ENOMEM; + } + for ( i = 0; i < nameservers_num; i++ ) + free( nameservers[i] ); + free( nameservers ); + free( hostname ); + return status; +} diff --git a/3rdParty/CAres/src/ares_parse_ptr_reply.c b/3rdParty/CAres/src/ares_parse_ptr_reply.c new file mode 100644 index 0000000..6f039b9 --- /dev/null +++ b/3rdParty/CAres/src/ares_parse_ptr_reply.c @@ -0,0 +1,209 @@ +/* $Id: ares_parse_ptr_reply.c,v 1.21 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr, + int addrlen, int family, struct hostent **host) +{ + unsigned int qdcount, ancount; + int status, i, rr_type, rr_class, rr_len; + long len; + const unsigned char *aptr; + char *ptrname, *hostname, *rr_name, *rr_data; + struct hostent *hostent; + int aliascnt = 0; + int alias_alloc = 8; + char ** aliases; + + /* Set *host to NULL for all failure cases. */ + *host = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + if (qdcount != 1) + return ARES_EBADRESP; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares__expand_name_for_response(aptr, abuf, alen, &ptrname, &len); + if (status != ARES_SUCCESS) + return status; + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free(ptrname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Examine each answer resource record (RR) in turn. */ + hostname = NULL; + aliases = malloc(alias_alloc * sizeof(char *)); + if (!aliases) + { + free(ptrname); + return ARES_ENOMEM; + } + for (i = 0; i < (int)ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + break; + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE(aptr); + rr_class = DNS_RR_CLASS(aptr); + rr_len = DNS_RR_LEN(aptr); + aptr += RRFIXEDSZ; + + if (rr_class == C_IN && rr_type == T_PTR + && strcasecmp(rr_name, ptrname) == 0) + { + /* Decode the RR data and set hostname to it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + if (hostname) + free(hostname); + hostname = rr_data; + aliases[aliascnt] = malloc((strlen(rr_data)+1) * sizeof(char *)); + if (!aliases[aliascnt]) + { + status = ARES_ENOMEM; + break; + } + strncpy(aliases[aliascnt], rr_data, strlen(rr_data)+1); + aliascnt++; + if (aliascnt >= alias_alloc) { + char **ptr; + alias_alloc *= 2; + ptr = realloc(aliases, alias_alloc * sizeof(char *)); + if(!ptr) { + status = ARES_ENOMEM; + break; + } + aliases = ptr; + } + } + + if (rr_class == C_IN && rr_type == T_CNAME) + { + /* Decode the RR data and replace ptrname with it. */ + status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data, + &len); + if (status != ARES_SUCCESS) + break; + free(ptrname); + ptrname = rr_data; + } + + free(rr_name); + aptr += rr_len; + if (aptr > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + } + + if (status == ARES_SUCCESS && !hostname) + status = ARES_ENODATA; + if (status == ARES_SUCCESS) + { + /* We got our answer. Allocate memory to build the host entry. */ + hostent = malloc(sizeof(struct hostent)); + if (hostent) + { + hostent->h_addr_list = malloc(2 * sizeof(char *)); + if (hostent->h_addr_list) + { + hostent->h_addr_list[0] = malloc(addrlen); + if (hostent->h_addr_list[0]) + { + hostent->h_aliases = malloc((aliascnt+1) * sizeof (char *)); + if (hostent->h_aliases) + { + /* Fill in the hostent and return successfully. */ + hostent->h_name = hostname; + for (i=0 ; i<aliascnt ; i++) + hostent->h_aliases[i] = aliases[i]; + hostent->h_aliases[aliascnt] = NULL; + hostent->h_addrtype = family; + hostent->h_length = addrlen; + memcpy(hostent->h_addr_list[0], addr, addrlen); + hostent->h_addr_list[1] = NULL; + *host = hostent; + free(aliases); + free(ptrname); + return ARES_SUCCESS; + } + free(hostent->h_addr_list[0]); + } + free(hostent->h_addr_list); + } + free(hostent); + } + status = ARES_ENOMEM; + } + for (i=0 ; i<aliascnt ; i++) + if (aliases[i]) + free(aliases[i]); + free(aliases); + if (hostname) + free(hostname); + free(ptrname); + return status; +} diff --git a/3rdParty/CAres/src/ares_parse_srv_reply.c b/3rdParty/CAres/src/ares_parse_srv_reply.c new file mode 100644 index 0000000..72830af --- /dev/null +++ b/3rdParty/CAres/src/ares_parse_srv_reply.c @@ -0,0 +1,180 @@ +/* $Id: ares_parse_srv_reply.c,v 1.12 2009-11-26 01:21:21 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2009 by Jakub Hrozek <jhrozek@redhat.com> + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_data.h" +#include "ares_private.h" + +/* AIX portability check */ +#ifndef T_SRV +# define T_SRV 33 /* server selection */ +#endif + +int +ares_parse_srv_reply (const unsigned char *abuf, int alen, + struct ares_srv_reply **srv_out) +{ + unsigned int qdcount, ancount, i; + const unsigned char *aptr, *vptr; + int status, rr_type, rr_class, rr_len; + long len; + char *hostname = NULL, *rr_name = NULL; + struct ares_srv_reply *srv_head = NULL; + struct ares_srv_reply *srv_last = NULL; + struct ares_srv_reply *srv_curr; + + /* Set *srv_out to NULL for all failure cases. */ + *srv_out = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT (abuf); + ancount = DNS_HEADER_ANCOUNT (abuf); + if (qdcount != 1) + return ARES_EBADRESP; + if (ancount == 0) + return ARES_ENODATA; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares_expand_name (aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free (hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + { + break; + } + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE (aptr); + rr_class = DNS_RR_CLASS (aptr); + rr_len = DNS_RR_LEN (aptr); + aptr += RRFIXEDSZ; + + /* Check if we are really looking at a SRV record */ + if (rr_class == C_IN && rr_type == T_SRV) + { + /* parse the SRV record itself */ + if (rr_len < 6) + { + status = ARES_EBADRESP; + break; + } + + /* Allocate storage for this SRV answer appending it to the list */ + srv_curr = ares_malloc_data(ARES_DATATYPE_SRV_REPLY); + if (!srv_curr) + { + status = ARES_ENOMEM; + break; + } + if (srv_last) + { + srv_last->next = srv_curr; + } + else + { + srv_head = srv_curr; + } + srv_last = srv_curr; + + vptr = aptr; + srv_curr->priority = ntohs (*((unsigned short *)vptr)); + vptr += sizeof(unsigned short); + srv_curr->weight = ntohs (*((unsigned short *)vptr)); + vptr += sizeof(unsigned short); + srv_curr->port = ntohs (*((unsigned short *)vptr)); + vptr += sizeof(unsigned short); + + status = ares_expand_name (vptr, abuf, alen, &srv_curr->host, &len); + if (status != ARES_SUCCESS) + break; + } + + /* Don't lose memory in the next iteration */ + free (rr_name); + rr_name = NULL; + + /* Move on to the next record */ + aptr += rr_len; + } + + if (hostname) + free (hostname); + if (rr_name) + free (rr_name); + + /* clean up on error */ + if (status != ARES_SUCCESS) + { + if (srv_head) + ares_free_data (srv_head); + return status; + } + + /* everything looks fine, return the data */ + *srv_out = srv_head; + + return ARES_SUCCESS; +} diff --git a/3rdParty/CAres/src/ares_parse_txt_reply.c b/3rdParty/CAres/src/ares_parse_txt_reply.c new file mode 100644 index 0000000..b6af850 --- /dev/null +++ b/3rdParty/CAres/src/ares_parse_txt_reply.c @@ -0,0 +1,202 @@ +/* $Id: ares_parse_txt_reply.c,v 1.9 2009-11-26 01:21:21 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2009 by Jakub Hrozek <jhrozek@redhat.com> + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include <stdlib.h> +#include <string.h> + +#include "ares.h" +#include "ares_dns.h" +#include "ares_data.h" +#include "ares_private.h" + +int +ares_parse_txt_reply (const unsigned char *abuf, int alen, + struct ares_txt_reply **txt_out) +{ + size_t substr_len, str_len; + unsigned int qdcount, ancount, i; + const unsigned char *aptr; + const unsigned char *strptr; + int status, rr_type, rr_class, rr_len; + long len; + char *hostname = NULL, *rr_name = NULL; + struct ares_txt_reply *txt_head = NULL; + struct ares_txt_reply *txt_last = NULL; + struct ares_txt_reply *txt_curr; + + /* Set *txt_out to NULL for all failure cases. */ + *txt_out = NULL; + + /* Give up if abuf doesn't have room for a header. */ + if (alen < HFIXEDSZ) + return ARES_EBADRESP; + + /* Fetch the question and answer count from the header. */ + qdcount = DNS_HEADER_QDCOUNT (abuf); + ancount = DNS_HEADER_ANCOUNT (abuf); + if (qdcount != 1) + return ARES_EBADRESP; + if (ancount == 0) + return ARES_ENODATA; + + /* Expand the name from the question, and skip past the question. */ + aptr = abuf + HFIXEDSZ; + status = ares_expand_name (aptr, abuf, alen, &hostname, &len); + if (status != ARES_SUCCESS) + return status; + + if (aptr + len + QFIXEDSZ > abuf + alen) + { + free (hostname); + return ARES_EBADRESP; + } + aptr += len + QFIXEDSZ; + + /* Examine each answer resource record (RR) in turn. */ + for (i = 0; i < ancount; i++) + { + /* Decode the RR up to the data field. */ + status = ares_expand_name (aptr, abuf, alen, &rr_name, &len); + if (status != ARES_SUCCESS) + { + break; + } + aptr += len; + if (aptr + RRFIXEDSZ > abuf + alen) + { + status = ARES_EBADRESP; + break; + } + rr_type = DNS_RR_TYPE (aptr); + rr_class = DNS_RR_CLASS (aptr); + rr_len = DNS_RR_LEN (aptr); + aptr += RRFIXEDSZ; + + /* Check if we are really looking at a TXT record */ + if (rr_class == C_IN && rr_type == T_TXT) + { + /* Allocate storage for this TXT answer appending it to the list */ + txt_curr = ares_malloc_data(ARES_DATATYPE_TXT_REPLY); + if (!txt_curr) + { + status = ARES_ENOMEM; + break; + } + if (txt_last) + { + txt_last->next = txt_curr; + } + else + { + txt_head = txt_curr; + } + txt_last = txt_curr; + + /* + * There may be multiple substrings in a single TXT record. Each + * substring may be up to 255 characters in length, with a + * "length byte" indicating the size of the substring payload. + * RDATA contains both the length-bytes and payloads of all + * substrings contained therein. + */ + + /* Compute total length to allow a single memory allocation */ + strptr = aptr; + while (strptr < (aptr + rr_len)) + { + substr_len = (unsigned char)*strptr; + txt_curr->length += substr_len; + strptr += substr_len + 1; + } + + /* Including null byte */ + txt_curr->txt = malloc (txt_curr->length + 1); + if (txt_curr->txt == NULL) + { + status = ARES_ENOMEM; + break; + } + + /* Step through the list of substrings, concatenating them */ + str_len = 0; + strptr = aptr; + while (strptr < (aptr + rr_len)) + { + substr_len = (unsigned char)*strptr; + strptr++; + memcpy ((char *) txt_curr->txt + str_len, strptr, substr_len); + str_len += substr_len; + strptr += substr_len; + } + /* Make sure we NULL-terminate */ + *((char *) txt_curr->txt + txt_curr->length) = '\0'; + } + + /* Don't lose memory in the next iteration */ + free (rr_name); + rr_name = NULL; + + /* Move on to the next record */ + aptr += rr_len; + } + + if (hostname) + free (hostname); + if (rr_name) + free (rr_name); + + /* clean up on error */ + if (status != ARES_SUCCESS) + { + if (txt_head) + ares_free_data (txt_head); + return status; + } + + /* everything looks fine, return the data */ + *txt_out = txt_head; + + return ARES_SUCCESS; +} diff --git a/3rdParty/CAres/src/ares_private.h b/3rdParty/CAres/src/ares_private.h new file mode 100644 index 0000000..4726d7a --- /dev/null +++ b/3rdParty/CAres/src/ares_private.h @@ -0,0 +1,343 @@ +#ifndef __ARES_PRIVATE_H +#define __ARES_PRIVATE_H + +/* $Id: ares_private.h,v 1.50 2009-11-09 12:56:50 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +#define WIN32 +#endif + +#include <stdio.h> +#include <sys/types.h> + +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif + +#ifdef WATT32 +#include <tcp.h> +#include <sys/ioctl.h> +#define writev(s,v,c) writev_s(s,v,c) +#define HAVE_WRITEV 1 +#endif + +#ifdef NETWARE +#include <time.h> +#endif + +#define DEFAULT_TIMEOUT 5000 /* milliseconds */ +#define DEFAULT_TRIES 4 +#ifndef INADDR_NONE +#define INADDR_NONE 0xffffffff +#endif + +#if defined(WIN32) && !defined(WATT32) + +#define IS_NT() ((int)GetVersion() > 0) +#define WIN_NS_9X "System\\CurrentControlSet\\Services\\VxD\\MSTCP" +#define WIN_NS_NT_KEY "System\\CurrentControlSet\\Services\\Tcpip\\Parameters" +#define NAMESERVER "NameServer" +#define DHCPNAMESERVER "DhcpNameServer" +#define DATABASEPATH "DatabasePath" +#define WIN_PATH_HOSTS "\\hosts" + +#elif defined(WATT32) + +#define PATH_RESOLV_CONF "/dev/ENV/etc/resolv.conf" + +#elif defined(NETWARE) + +#define PATH_RESOLV_CONF "sys:/etc/resolv.cfg" +#define PATH_HOSTS "sys:/etc/hosts" + +#elif defined(__riscos__) + +#define PATH_HOSTS "InetDBase:Hosts" + +#else + +#define PATH_RESOLV_CONF "/etc/resolv.conf" +#ifdef ETC_INET +#define PATH_HOSTS "/etc/inet/hosts" +#else +#define PATH_HOSTS "/etc/hosts" +#endif + +#endif + +#define ARES_ID_KEY_LEN 31 + +#include "ares_ipv6.h" +#include "ares_llist.h" + +#ifndef HAVE_STRDUP +# include "ares_strdup.h" +# define strdup(ptr) ares_strdup(ptr) +#endif + +#ifndef HAVE_STRCASECMP +# include "ares_strcasecmp.h" +# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2) +#endif + +#ifndef HAVE_STRNCASECMP +# include "ares_strcasecmp.h" +# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n) +#endif + +#ifndef HAVE_WRITEV +# include "ares_writev.h" +# define writev(s,ptr,cnt) ares_writev(s,ptr,cnt) +#endif + +struct ares_addr { + int family; + union { + struct in_addr addr4; + struct in6_addr addr6; + } addr; +}; +#define addrV4 addr.addr4 +#define addrV6 addr.addr6 + +struct query; + +struct send_request { + /* Remaining data to send */ + const unsigned char *data; + size_t len; + + /* The query for which we're sending this data */ + struct query* owner_query; + /* The buffer we're using, if we have our own copy of the packet */ + unsigned char *data_storage; + + /* Next request in queue */ + struct send_request *next; +}; + +struct server_state { + struct in_addr addr; + ares_socket_t udp_socket; + ares_socket_t tcp_socket; + + /* Mini-buffer for reading the length word */ + unsigned char tcp_lenbuf[2]; + int tcp_lenbuf_pos; + int tcp_length; + + /* Buffer for reading actual TCP data */ + unsigned char *tcp_buffer; + int tcp_buffer_pos; + + /* TCP output queue */ + struct send_request *qhead; + struct send_request *qtail; + + /* Which incarnation of this connection is this? We don't want to + * retransmit requests into the very same socket, but if the server + * closes on us and we re-open the connection, then we do want to + * re-send. */ + int tcp_connection_generation; + + /* Circular, doubly-linked list of outstanding queries to this server */ + struct list_node queries_to_server; + + /* Link back to owning channel */ + ares_channel channel; + + /* Is this server broken? We mark connections as broken when a + * request that is queued for sending times out. + */ + int is_broken; +}; + +/* State to represent a DNS query */ +struct query { + /* Query ID from qbuf, for faster lookup, and current timeout */ + unsigned short qid; + struct timeval timeout; + + /* + * Links for the doubly-linked lists in which we insert a query. + * These circular, doubly-linked lists that are hash-bucketed based + * the attributes we care about, help making most important + * operations O(1). + */ + struct list_node queries_by_qid; /* hopefully in same cache line as qid */ + struct list_node queries_by_timeout; + struct list_node queries_to_server; + struct list_node all_queries; + + /* Query buf with length at beginning, for TCP transmission */ + unsigned char *tcpbuf; + int tcplen; + + /* Arguments passed to ares_send() (qbuf points into tcpbuf) */ + const unsigned char *qbuf; + int qlen; + ares_callback callback; + void *arg; + + /* Query status */ + int try; /* Number of times we tried this query already. */ + int server; /* Server this query has last been sent to. */ + struct query_server_info *server_info; /* per-server state */ + int using_tcp; + int error_status; + int timeouts; /* number of timeouts we saw for this request */ +}; + +/* Per-server state for a query */ +struct query_server_info { + int skip_server; /* should we skip server, due to errors, etc? */ + int tcp_connection_generation; /* into which TCP connection did we send? */ +}; + +/* An IP address pattern; matches an IP address X if X & mask == addr */ +#define PATTERN_MASK 0x1 +#define PATTERN_CIDR 0x2 + +struct apattern { + union + { + struct in_addr addr4; + struct in6_addr addr6; + } addr; + union + { + struct in_addr addr4; + struct in6_addr addr6; + unsigned short bits; + } mask; + int family; + unsigned short type; +}; + +typedef struct rc4_key +{ + unsigned char state[256]; + unsigned char x; + unsigned char y; +} rc4_key; + +struct ares_channeldata { + /* Configuration data */ + int flags; + int timeout; /* in milliseconds */ + int tries; + int ndots; + int rotate; /* if true, all servers specified are used */ + int udp_port; + int tcp_port; + int socket_send_buffer_size; + int socket_receive_buffer_size; + char **domains; + int ndomains; + struct apattern *sortlist; + int nsort; + char *lookups; + + int optmask; /* the option bitfield passed in at init time */ + + /* Server addresses and communications state */ + struct server_state *servers; + int nservers; + + /* ID to use for next query */ + unsigned short next_id; + /* key to use when generating new ids */ + rc4_key id_key; + + /* Generation number to use for the next TCP socket open/close */ + int tcp_connection_generation; + + /* The time at which we last called process_timeouts(). Uses integer seconds + just to draw the line somewhere. */ + time_t last_timeout_processed; + + /* Last server we sent a query to. */ + int last_server; + + /* Circular, doubly-linked list of queries, bucketed various ways.... */ + /* All active queries in a single list: */ + struct list_node all_queries; + /* Queries bucketed by qid, for quickly dispatching DNS responses: */ +#define ARES_QID_TABLE_SIZE 2048 + struct list_node queries_by_qid[ARES_QID_TABLE_SIZE]; + /* Queries bucketed by timeout, for quickly handling timeouts: */ +#define ARES_TIMEOUT_TABLE_SIZE 1024 + struct list_node queries_by_timeout[ARES_TIMEOUT_TABLE_SIZE]; + + ares_sock_state_cb sock_state_cb; + void *sock_state_cb_data; + + ares_sock_create_callback sock_create_cb; + void *sock_create_cb_data; +}; + +/* return true if now is exactly check time or later */ +int ares__timedout(struct timeval *now, + struct timeval *check); +/* add the specific number of milliseconds to the time in the first argument */ +int ares__timeadd(struct timeval *now, + int millisecs); +/* return time offset between now and (future) check, in milliseconds */ +long ares__timeoffset(struct timeval *now, + struct timeval *check); +/* returns ARES_SUCCESS if library has been initialized */ +int ares_library_initialized(void); +void ares__rc4(rc4_key* key,unsigned char *buffer_ptr, int buffer_len); +void ares__send_query(ares_channel channel, struct query *query, + struct timeval *now); +void ares__close_sockets(ares_channel channel, struct server_state *server); +int ares__get_hostent(FILE *fp, int family, struct hostent **host); +int ares__read_line(FILE *fp, char **buf, size_t *bufsize); +void ares__free_query(struct query *query); +unsigned short ares__generate_new_id(rc4_key* key); +struct timeval ares__tvnow(void); +int ares__expand_name_for_response(const unsigned char *encoded, + const unsigned char *abuf, int alen, + char **s, long *enclen); +#if 0 /* Not used */ +long ares__tvdiff(struct timeval t1, struct timeval t2); +#endif + +#define ARES_SWAP_BYTE(a,b) \ + { unsigned char swapByte = *(a); *(a) = *(b); *(b) = swapByte; } + +#define SOCK_STATE_CALLBACK(c, s, r, w) \ + do { \ + if ((c)->sock_state_cb) \ + (c)->sock_state_cb((c)->sock_state_cb_data, (s), (r), (w)); \ + } while (0) + +#ifdef CURLDEBUG +/* This is low-level hard-hacking memory leak tracking and similar. Using the + libcurl lowlevel code from within library is ugly and only works when + c-ares is built and linked with a similarly curldebug-enabled libcurl, + but we do this anyway for convenience. */ +#include "../lib/memdebug.h" +#endif + +#endif /* __ARES_PRIVATE_H */ diff --git a/3rdParty/CAres/src/ares_process.c b/3rdParty/CAres/src/ares_process.c new file mode 100644 index 0000000..6182ccc --- /dev/null +++ b/3rdParty/CAres/src/ares_process.c @@ -0,0 +1,1170 @@ +/* $Id: ares_process.c,v 1.79 2009-11-18 10:33:54 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * Copyright (C) 2004-2009 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_SYS_UIO_H +# include <sys/uio.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_NETINET_TCP_H +# include <netinet/tcp.h> +#endif +#ifdef HAVE_NETDB_H +# include <netdb.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +#endif + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_SYS_IOCTL_H +# include <sys/ioctl.h> +#endif +#ifdef NETWARE +# include <sys/filio.h> +#endif + +#include <assert.h> +#include <string.h> +#include <stdlib.h> +#include <fcntl.h> +#include <time.h> +#include <errno.h> + +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + + +static int try_again(int errnum); +static void write_tcp_data(ares_channel channel, fd_set *write_fds, + ares_socket_t write_fd, struct timeval *now); +static void read_tcp_data(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now); +static void read_udp_packets(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now); +static void advance_tcp_send_queue(ares_channel channel, int whichserver, + ssize_t num_bytes); +static void process_timeouts(ares_channel channel, struct timeval *now); +static void process_broken_connections(ares_channel channel, + struct timeval *now); +static void process_answer(ares_channel channel, unsigned char *abuf, + int alen, int whichserver, int tcp, + struct timeval *now); +static void handle_error(ares_channel channel, int whichserver, + struct timeval *now); +static void skip_server(ares_channel channel, struct query *query, + int whichserver); +static void next_server(ares_channel channel, struct query *query, + struct timeval *now); +static int configure_socket(int s, ares_channel channel); +static int open_tcp_socket(ares_channel channel, struct server_state *server); +static int open_udp_socket(ares_channel channel, struct server_state *server); +static int same_questions(const unsigned char *qbuf, int qlen, + const unsigned char *abuf, int alen); +static void end_query(ares_channel channel, struct query *query, int status, + unsigned char *abuf, int alen); + +/* return true if now is exactly check time or later */ +int ares__timedout(struct timeval *now, + struct timeval *check) +{ + long secs = (now->tv_sec - check->tv_sec); + + if(secs > 0) + return 1; /* yes, timed out */ + if(secs < 0) + return 0; /* nope, not timed out */ + + /* if the full seconds were identical, check the sub second parts */ + return (now->tv_usec - check->tv_usec >= 0); +} + +/* add the specific number of milliseconds to the time in the first argument */ +int ares__timeadd(struct timeval *now, + int millisecs) +{ + now->tv_sec += millisecs/1000; + now->tv_usec += (millisecs%1000)*1000; + + if(now->tv_usec >= 1000000) { + ++(now->tv_sec); + now->tv_usec -= 1000000; + } + + return 0; +} + +/* return time offset between now and (future) check, in milliseconds */ +long ares__timeoffset(struct timeval *now, + struct timeval *check) +{ + return (check->tv_sec - now->tv_sec)*1000 + + (check->tv_usec - now->tv_usec)/1000; +} + + +/* Something interesting happened on the wire, or there was a timeout. + * See what's up and respond accordingly. + */ +void ares_process(ares_channel channel, fd_set *read_fds, fd_set *write_fds) +{ + struct timeval now = ares__tvnow(); + + write_tcp_data(channel, write_fds, ARES_SOCKET_BAD, &now); + read_tcp_data(channel, read_fds, ARES_SOCKET_BAD, &now); + read_udp_packets(channel, read_fds, ARES_SOCKET_BAD, &now); + process_timeouts(channel, &now); + process_broken_connections(channel, &now); +} + +/* Something interesting happened on the wire, or there was a timeout. + * See what's up and respond accordingly. + */ +void ares_process_fd(ares_channel channel, + ares_socket_t read_fd, /* use ARES_SOCKET_BAD or valid + file descriptors */ + ares_socket_t write_fd) +{ + struct timeval now = ares__tvnow(); + + write_tcp_data(channel, NULL, write_fd, &now); + read_tcp_data(channel, NULL, read_fd, &now); + read_udp_packets(channel, NULL, read_fd, &now); + process_timeouts(channel, &now); +} + + +/* Return 1 if the specified error number describes a readiness error, or 0 + * otherwise. This is mostly for HP-UX, which could return EAGAIN or + * EWOULDBLOCK. See this man page + * + * http://devrsrc1.external.hp.com/STKS/cgi-bin/man2html?manpage=/usr/share/man/man2.Z/send.2 + */ +static int try_again(int errnum) +{ +#if !defined EWOULDBLOCK && !defined EAGAIN +#error "Neither EWOULDBLOCK nor EAGAIN defined" +#endif + switch (errnum) + { +#ifdef EWOULDBLOCK + case EWOULDBLOCK: + return 1; +#endif +#if defined EAGAIN && EAGAIN != EWOULDBLOCK + case EAGAIN: + return 1; +#endif + } + return 0; +} + +/* If any TCP sockets select true for writing, write out queued data + * we have for them. + */ +static void write_tcp_data(ares_channel channel, + fd_set *write_fds, + ares_socket_t write_fd, + struct timeval *now) +{ + struct server_state *server; + struct send_request *sendreq; + struct iovec *vec; + int i; + ssize_t scount; + ssize_t wcount; + size_t n; + + if(!write_fds && (write_fd == ARES_SOCKET_BAD)) + /* no possible action */ + return; + + for (i = 0; i < channel->nservers; i++) + { + /* Make sure server has data to send and is selected in write_fds or + write_fd. */ + server = &channel->servers[i]; + if (!server->qhead || server->tcp_socket == ARES_SOCKET_BAD || + server->is_broken) + continue; + + if(write_fds) { + if(!FD_ISSET(server->tcp_socket, write_fds)) + continue; + } + else { + if(server->tcp_socket != write_fd) + continue; + } + + if(write_fds) + /* If there's an error and we close this socket, then open + * another with the same fd to talk to another server, then we + * don't want to think that it was the new socket that was + * ready. This is not disastrous, but is likely to result in + * extra system calls and confusion. */ + FD_CLR(server->tcp_socket, write_fds); + + /* Count the number of send queue items. */ + n = 0; + for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) + n++; + + /* Allocate iovecs so we can send all our data at once. */ + vec = malloc(n * sizeof(struct iovec)); + if (vec) + { + /* Fill in the iovecs and send. */ + n = 0; + for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) + { + vec[n].iov_base = (char *) sendreq->data; + vec[n].iov_len = sendreq->len; + n++; + } + wcount = (ssize_t)writev(server->tcp_socket, vec, (int)n); + free(vec); + if (wcount < 0) + { + if (!try_again(SOCKERRNO)) + handle_error(channel, i, now); + continue; + } + + /* Advance the send queue by as many bytes as we sent. */ + advance_tcp_send_queue(channel, i, wcount); + } + else + { + /* Can't allocate iovecs; just send the first request. */ + sendreq = server->qhead; + + scount = swrite(server->tcp_socket, sendreq->data, sendreq->len); + if (scount < 0) + { + if (!try_again(SOCKERRNO)) + handle_error(channel, i, now); + continue; + } + + /* Advance the send queue by as many bytes as we sent. */ + advance_tcp_send_queue(channel, i, scount); + } + } +} + +/* Consume the given number of bytes from the head of the TCP send queue. */ +static void advance_tcp_send_queue(ares_channel channel, int whichserver, + ssize_t num_bytes) +{ + struct send_request *sendreq; + struct server_state *server = &channel->servers[whichserver]; + while (num_bytes > 0) + { + sendreq = server->qhead; + if ((size_t)num_bytes >= sendreq->len) + { + num_bytes -= sendreq->len; + server->qhead = sendreq->next; + if (server->qhead == NULL) + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 0); + server->qtail = NULL; + } + if (sendreq->data_storage != NULL) + free(sendreq->data_storage); + free(sendreq); + } + else + { + sendreq->data += num_bytes; + sendreq->len -= num_bytes; + num_bytes = 0; + } + } +} + +/* If any TCP socket selects true for reading, read some data, + * allocate a buffer if we finish reading the length word, and process + * a packet if we finish reading one. + */ +static void read_tcp_data(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now) +{ + struct server_state *server; + int i; + ssize_t count; + + if(!read_fds && (read_fd == ARES_SOCKET_BAD)) + /* no possible action */ + return; + + for (i = 0; i < channel->nservers; i++) + { + /* Make sure the server has a socket and is selected in read_fds. */ + server = &channel->servers[i]; + if (server->tcp_socket == ARES_SOCKET_BAD || server->is_broken) + continue; + + if(read_fds) { + if(!FD_ISSET(server->tcp_socket, read_fds)) + continue; + } + else { + if(server->tcp_socket != read_fd) + continue; + } + + if(read_fds) + /* If there's an error and we close this socket, then open + * another with the same fd to talk to another server, then we + * don't want to think that it was the new socket that was + * ready. This is not disastrous, but is likely to result in + * extra system calls and confusion. */ + FD_CLR(server->tcp_socket, read_fds); + + if (server->tcp_lenbuf_pos != 2) + { + /* We haven't yet read a length word, so read that (or + * what's left to read of it). + */ + count = sread(server->tcp_socket, + server->tcp_lenbuf + server->tcp_lenbuf_pos, + 2 - server->tcp_lenbuf_pos); + if (count <= 0) + { + if (!(count == -1 && try_again(SOCKERRNO))) + handle_error(channel, i, now); + continue; + } + + server->tcp_lenbuf_pos += (int)count; + if (server->tcp_lenbuf_pos == 2) + { + /* We finished reading the length word. Decode the + * length and allocate a buffer for the data. + */ + server->tcp_length = server->tcp_lenbuf[0] << 8 + | server->tcp_lenbuf[1]; + server->tcp_buffer = malloc(server->tcp_length); + if (!server->tcp_buffer) + handle_error(channel, i, now); + server->tcp_buffer_pos = 0; + } + } + else + { + /* Read data into the allocated buffer. */ + count = sread(server->tcp_socket, + server->tcp_buffer + server->tcp_buffer_pos, + server->tcp_length - server->tcp_buffer_pos); + if (count <= 0) + { + if (!(count == -1 && try_again(SOCKERRNO))) + handle_error(channel, i, now); + continue; + } + + server->tcp_buffer_pos += (int)count; + if (server->tcp_buffer_pos == server->tcp_length) + { + /* We finished reading this answer; process it and + * prepare to read another length word. + */ + process_answer(channel, server->tcp_buffer, server->tcp_length, + i, 1, now); + if (server->tcp_buffer) + free(server->tcp_buffer); + server->tcp_buffer = NULL; + server->tcp_lenbuf_pos = 0; + server->tcp_buffer_pos = 0; + } + } + } +} + +/* If any UDP sockets select true for reading, process them. */ +static void read_udp_packets(ares_channel channel, fd_set *read_fds, + ares_socket_t read_fd, struct timeval *now) +{ + struct server_state *server; + int i; + ssize_t count; + unsigned char buf[PACKETSZ + 1]; +#ifdef HAVE_RECVFROM + struct sockaddr_in from; + ares_socklen_t fromlen; +#endif + + if(!read_fds && (read_fd == ARES_SOCKET_BAD)) + /* no possible action */ + return; + + for (i = 0; i < channel->nservers; i++) + { + /* Make sure the server has a socket and is selected in read_fds. */ + server = &channel->servers[i]; + + if (server->udp_socket == ARES_SOCKET_BAD || server->is_broken) + continue; + + if(read_fds) { + if(!FD_ISSET(server->udp_socket, read_fds)) + continue; + } + else { + if(server->udp_socket != read_fd) + continue; + } + + if(read_fds) + /* If there's an error and we close this socket, then open + * another with the same fd to talk to another server, then we + * don't want to think that it was the new socket that was + * ready. This is not disastrous, but is likely to result in + * extra system calls and confusion. */ + FD_CLR(server->udp_socket, read_fds); + + /* To reduce event loop overhead, read and process as many + * packets as we can. */ + do { +#ifdef HAVE_RECVFROM + fromlen = sizeof(from); + count = (ssize_t)recvfrom(server->udp_socket, (void *)buf, sizeof(buf), + 0, (struct sockaddr *)&from, &fromlen); +#else + count = sread(server->udp_socket, buf, sizeof(buf)); +#endif + if (count == -1 && try_again(SOCKERRNO)) + continue; + else if (count <= 0) + handle_error(channel, i, now); +#ifdef HAVE_RECVFROM + else if (from.sin_addr.s_addr != server->addr.s_addr) + /* Address response came from did not match the address + * we sent the request to. Someone may be attempting + * to perform a cache poisoning attack */ + break; +#endif + else + process_answer(channel, buf, (int)count, i, 0, now); + } while (count > 0); + } +} + +/* If any queries have timed out, note the timeout and move them on. */ +static void process_timeouts(ares_channel channel, struct timeval *now) +{ + time_t t; /* the time of the timeouts we're processing */ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + /* Process all the timeouts that have fired since the last time we + * processed timeouts. If things are going well, then we'll have + * hundreds/thousands of queries that fall into future buckets, and + * only a handful of requests that fall into the "now" bucket, so + * this should be quite quick. + */ + for (t = channel->last_timeout_processed; t <= now->tv_sec; t++) + { + list_head = &(channel->queries_by_timeout[t % ARES_TIMEOUT_TABLE_SIZE]); + for (list_node = list_head->next; list_node != list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* in case the query gets deleted */ + if (query->timeout.tv_sec && ares__timedout(now, &query->timeout)) + { + query->error_status = ARES_ETIMEOUT; + ++query->timeouts; + next_server(channel, query, now); + } + } + } + channel->last_timeout_processed = now->tv_sec; +} + +/* Handle an answer from a server. */ +static void process_answer(ares_channel channel, unsigned char *abuf, + int alen, int whichserver, int tcp, + struct timeval *now) +{ + int tc, rcode; + unsigned short id; + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + + /* If there's no room in the answer for a header, we can't do much + * with it. */ + if (alen < HFIXEDSZ) + return; + + /* Grab the query ID, truncate bit, and response code from the packet. */ + id = DNS_HEADER_QID(abuf); + tc = DNS_HEADER_TC(abuf); + rcode = DNS_HEADER_RCODE(abuf); + + /* Find the query corresponding to this packet. The queries are + * hashed/bucketed by query id, so this lookup should be quick. + * Note that both the query id and the questions must be the same; + * when the query id wraps around we can have multiple outstanding + * queries with the same query id, so we need to check both the id and + * question. + */ + query = NULL; + list_head = &(channel->queries_by_qid[id % ARES_QID_TABLE_SIZE]); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) + { + struct query *q = list_node->data; + if ((q->qid == id) && same_questions(q->qbuf, q->qlen, abuf, alen)) + { + query = q; + break; + } + } + if (!query) + return; + + /* If we got a truncated UDP packet and are not ignoring truncation, + * don't accept the packet, and switch the query to TCP if we hadn't + * done so already. + */ + if ((tc || alen > PACKETSZ) && !tcp && !(channel->flags & ARES_FLAG_IGNTC)) + { + if (!query->using_tcp) + { + query->using_tcp = 1; + ares__send_query(channel, query, now); + } + return; + } + + /* Limit alen to PACKETSZ if we aren't using TCP (only relevant if we + * are ignoring truncation. + */ + if (alen > PACKETSZ && !tcp) + alen = PACKETSZ; + + /* If we aren't passing through all error packets, discard packets + * with SERVFAIL, NOTIMP, or REFUSED response codes. + */ + if (!(channel->flags & ARES_FLAG_NOCHECKRESP)) + { + if (rcode == SERVFAIL || rcode == NOTIMP || rcode == REFUSED) + { + skip_server(channel, query, whichserver); + if (query->server == whichserver) + next_server(channel, query, now); + return; + } + } + + end_query(channel, query, ARES_SUCCESS, abuf, alen); +} + +/* Close all the connections that are no longer usable. */ +static void process_broken_connections(ares_channel channel, + struct timeval *now) +{ + int i; + for (i = 0; i < channel->nservers; i++) + { + struct server_state *server = &channel->servers[i]; + if (server->is_broken) + { + handle_error(channel, i, now); + } + } +} + +static void handle_error(ares_channel channel, int whichserver, + struct timeval *now) +{ + struct server_state *server; + struct query *query; + struct list_node list_head; + struct list_node* list_node; + + server = &channel->servers[whichserver]; + + /* Reset communications with this server. */ + ares__close_sockets(channel, server); + + /* Tell all queries talking to this server to move on and not try + * this server again. We steal the current list of queries that were + * in-flight to this server, since when we call next_server this can + * cause the queries to be re-sent to this server, which will + * re-insert these queries in that same server->queries_to_server + * list. + */ + ares__init_list_head(&list_head); + ares__swap_lists(&list_head, &(server->queries_to_server)); + for (list_node = list_head.next; list_node != &list_head; ) + { + query = list_node->data; + list_node = list_node->next; /* in case the query gets deleted */ + assert(query->server == whichserver); + skip_server(channel, query, whichserver); + next_server(channel, query, now); + } + /* Each query should have removed itself from our temporary list as + * it re-sent itself or finished up... + */ + assert(ares__is_list_empty(&list_head)); +} + +static void skip_server(ares_channel channel, struct query *query, + int whichserver) { + /* The given server gave us problems with this query, so if we have + * the luxury of using other servers, then let's skip the + * potentially broken server and just use the others. If we only + * have one server and we need to retry then we should just go ahead + * and re-use that server, since it's our only hope; perhaps we + * just got unlucky, and retrying will work (eg, the server timed + * out our TCP connection just as we were sending another request). + */ + if (channel->nservers > 1) + { + query->server_info[whichserver].skip_server = 1; + } +} + +static void next_server(ares_channel channel, struct query *query, + struct timeval *now) +{ + /* We need to try each server channel->tries times. We have channel->nservers + * servers to try. In total, we need to do channel->nservers * channel->tries + * attempts. Use query->try to remember how many times we already attempted + * this query. Use modular arithmetic to find the next server to try. */ + while (++(query->try) < (channel->nservers * channel->tries)) + { + struct server_state *server; + + /* Move on to the next server. */ + query->server = (query->server + 1) % channel->nservers; + server = &channel->servers[query->server]; + + /* We don't want to use this server if (1) we decided this + * connection is broken, and thus about to be closed, (2) + * we've decided to skip this server because of earlier + * errors we encountered, or (3) we already sent this query + * over this exact connection. + */ + if (!server->is_broken && + !query->server_info[query->server].skip_server && + !(query->using_tcp && + (query->server_info[query->server].tcp_connection_generation == + server->tcp_connection_generation))) + { + ares__send_query(channel, query, now); + return; + } + + /* You might think that with TCP we only need one try. However, + * even when using TCP, servers can time-out our connection just + * as we're sending a request, or close our connection because + * they die, or never send us a reply because they get wedged or + * tickle a bug that drops our request. + */ + } + + /* If we are here, all attempts to perform query failed. */ + end_query(channel, query, query->error_status, NULL, 0); +} + +void ares__send_query(ares_channel channel, struct query *query, + struct timeval *now) +{ + struct send_request *sendreq; + struct server_state *server; + int timeplus; + + server = &channel->servers[query->server]; + if (query->using_tcp) + { + /* Make sure the TCP socket for this server is set up and queue + * a send request. + */ + if (server->tcp_socket == ARES_SOCKET_BAD) + { + if (open_tcp_socket(channel, server) == -1) + { + skip_server(channel, query, query->server); + next_server(channel, query, now); + return; + } + } + sendreq = calloc(1, sizeof(struct send_request)); + if (!sendreq) + { + end_query(channel, query, ARES_ENOMEM, NULL, 0); + return; + } + /* To make the common case fast, we avoid copies by using the + * query's tcpbuf for as long as the query is alive. In the rare + * case where the query ends while it's queued for transmission, + * then we give the sendreq its own copy of the request packet + * and put it in sendreq->data_storage. + */ + sendreq->data_storage = NULL; + sendreq->data = query->tcpbuf; + sendreq->len = query->tcplen; + sendreq->owner_query = query; + sendreq->next = NULL; + if (server->qtail) + server->qtail->next = sendreq; + else + { + SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 1); + server->qhead = sendreq; + } + server->qtail = sendreq; + query->server_info[query->server].tcp_connection_generation = + server->tcp_connection_generation; + } + else + { + if (server->udp_socket == ARES_SOCKET_BAD) + { + if (open_udp_socket(channel, server) == -1) + { + skip_server(channel, query, query->server); + next_server(channel, query, now); + return; + } + } + if (swrite(server->udp_socket, query->qbuf, query->qlen) == -1) + { + /* FIXME: Handle EAGAIN here since it likely can happen. */ + skip_server(channel, query, query->server); + next_server(channel, query, now); + return; + } + } + timeplus = channel->timeout << (query->try / channel->nservers); + timeplus = (timeplus * (9 + (rand () & 7))) / 16; + query->timeout = *now; + ares__timeadd(&query->timeout, + timeplus); + /* Keep track of queries bucketed by timeout, so we can process + * timeout events quickly. + */ + ares__remove_from_list(&(query->queries_by_timeout)); + ares__insert_in_list( + &(query->queries_by_timeout), + &(channel->queries_by_timeout[query->timeout.tv_sec % + ARES_TIMEOUT_TABLE_SIZE])); + + /* Keep track of queries bucketed by server, so we can process server + * errors quickly. + */ + ares__remove_from_list(&(query->queries_to_server)); + ares__insert_in_list(&(query->queries_to_server), + &(server->queries_to_server)); +} + +/* + * setsocknonblock sets the given socket to either blocking or non-blocking mode + * based on the 'nonblock' boolean argument. This function is highly portable. + */ +static int setsocknonblock(ares_socket_t sockfd, /* operate on this */ + int nonblock /* TRUE or FALSE */) +{ +#if defined(USE_BLOCKING_SOCKETS) + + return 0; /* returns success */ + +#elif defined(HAVE_FCNTL_O_NONBLOCK) + + /* most recent unix versions */ + int flags; + flags = fcntl(sockfd, F_GETFL, 0); + if (FALSE != nonblock) + return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK); + else + return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK)); + +#elif defined(HAVE_IOCTL_FIONBIO) + + /* older unix versions */ + int flags; + flags = nonblock; + return ioctl(sockfd, FIONBIO, &flags); + +#elif defined(HAVE_IOCTLSOCKET_FIONBIO) + +#ifdef WATT32 + char flags; +#else + /* Windows */ + unsigned long flags; +#endif + flags = nonblock; + return ioctlsocket(sockfd, FIONBIO, &flags); + +#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO) + + /* Amiga */ + return IoctlSocket(sockfd, FIONBIO, (long)nonblock); + +#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK) + + /* BeOS */ + long b = nonblock ? 1 : 0; + return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b)); + +#else +# error "no non-blocking method was found/used/set" +#endif +} + +static int configure_socket(int s, ares_channel channel) +{ + setsocknonblock(s, TRUE); + +#if defined(FD_CLOEXEC) && !defined(MSDOS) + /* Configure the socket fd as close-on-exec. */ + if (fcntl(s, F_SETFD, FD_CLOEXEC) == -1) + return -1; +#endif + + /* Set the socket's send and receive buffer sizes. */ + if ((channel->socket_send_buffer_size > 0) && + setsockopt(s, SOL_SOCKET, SO_SNDBUF, + (void *)&channel->socket_send_buffer_size, + sizeof(channel->socket_send_buffer_size)) == -1) + return -1; + + if ((channel->socket_receive_buffer_size > 0) && + setsockopt(s, SOL_SOCKET, SO_RCVBUF, + (void *)&channel->socket_receive_buffer_size, + sizeof(channel->socket_receive_buffer_size)) == -1) + return -1; + + return 0; + } + +static int open_tcp_socket(ares_channel channel, struct server_state *server) +{ + ares_socket_t s; + int opt; + struct sockaddr_in sockin; + + /* Acquire a socket. */ + s = socket(AF_INET, SOCK_STREAM, 0); + if (s == ARES_SOCKET_BAD) + return -1; + + /* Configure it. */ + if (configure_socket(s, channel) < 0) + { + sclose(s); + return -1; + } + +#ifdef TCP_NODELAY + /* + * Disable the Nagle algorithm (only relevant for TCP sockets, and thus not in + * configure_socket). In general, in DNS lookups we're pretty much interested + * in firing off a single request and then waiting for a reply, so batching + * isn't very interesting in general. + */ + opt = 1; + if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, + (void *)&opt, sizeof(opt)) == -1) + { + sclose(s); + return -1; + } +#endif + + /* Connect to the server. */ + memset(&sockin, 0, sizeof(sockin)); + sockin.sin_family = AF_INET; + sockin.sin_addr = server->addr; + sockin.sin_port = (unsigned short)(channel->tcp_port & 0xffff); + if (connect(s, (struct sockaddr *) &sockin, sizeof(sockin)) == -1) + { + int err = SOCKERRNO; + + if (err != EINPROGRESS && err != EWOULDBLOCK) + { + sclose(s); + return -1; + } + } + + if (channel->sock_create_cb) + { + int err = channel->sock_create_cb(s, SOCK_STREAM, + channel->sock_create_cb_data); + if (err < 0) + { + sclose(s); + return err; + } + } + + SOCK_STATE_CALLBACK(channel, s, 1, 0); + server->tcp_buffer_pos = 0; + server->tcp_socket = s; + server->tcp_connection_generation = ++channel->tcp_connection_generation; + return 0; +} + +static int open_udp_socket(ares_channel channel, struct server_state *server) +{ + ares_socket_t s; + struct sockaddr_in sockin; + + /* Acquire a socket. */ + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s == ARES_SOCKET_BAD) + return -1; + + /* Set the socket non-blocking. */ + if (configure_socket(s, channel) < 0) + { + sclose(s); + return -1; + } + + /* Connect to the server. */ + memset(&sockin, 0, sizeof(sockin)); + sockin.sin_family = AF_INET; + sockin.sin_addr = server->addr; + sockin.sin_port = (unsigned short)(channel->udp_port & 0xffff); + if (connect(s, (struct sockaddr *) &sockin, sizeof(sockin)) == -1) + { + int err = SOCKERRNO; + + if (err != EINPROGRESS && err != EWOULDBLOCK) + { + sclose(s); + return -1; + } + } + + if (channel->sock_create_cb) + { + int err = channel->sock_create_cb(s, SOCK_DGRAM, + channel->sock_create_cb_data); + if (err < 0) + { + sclose(s); + return err; + } + } + + SOCK_STATE_CALLBACK(channel, s, 1, 0); + + server->udp_socket = s; + return 0; +} + +static int same_questions(const unsigned char *qbuf, int qlen, + const unsigned char *abuf, int alen) +{ + struct { + const unsigned char *p; + int qdcount; + char *name; + long namelen; + int type; + int dnsclass; + } q, a; + int i, j; + + if (qlen < HFIXEDSZ || alen < HFIXEDSZ) + return 0; + + /* Extract qdcount from the request and reply buffers and compare them. */ + q.qdcount = DNS_HEADER_QDCOUNT(qbuf); + a.qdcount = DNS_HEADER_QDCOUNT(abuf); + if (q.qdcount != a.qdcount) + return 0; + + /* For each question in qbuf, find it in abuf. */ + q.p = qbuf + HFIXEDSZ; + for (i = 0; i < q.qdcount; i++) + { + /* Decode the question in the query. */ + if (ares_expand_name(q.p, qbuf, qlen, &q.name, &q.namelen) + != ARES_SUCCESS) + return 0; + q.p += q.namelen; + if (q.p + QFIXEDSZ > qbuf + qlen) + { + free(q.name); + return 0; + } + q.type = DNS_QUESTION_TYPE(q.p); + q.dnsclass = DNS_QUESTION_CLASS(q.p); + q.p += QFIXEDSZ; + + /* Search for this question in the answer. */ + a.p = abuf + HFIXEDSZ; + for (j = 0; j < a.qdcount; j++) + { + /* Decode the question in the answer. */ + if (ares_expand_name(a.p, abuf, alen, &a.name, &a.namelen) + != ARES_SUCCESS) + { + free(q.name); + return 0; + } + a.p += a.namelen; + if (a.p + QFIXEDSZ > abuf + alen) + { + free(q.name); + free(a.name); + return 0; + } + a.type = DNS_QUESTION_TYPE(a.p); + a.dnsclass = DNS_QUESTION_CLASS(a.p); + a.p += QFIXEDSZ; + + /* Compare the decoded questions. */ + if (strcasecmp(q.name, a.name) == 0 && q.type == a.type + && q.dnsclass == a.dnsclass) + { + free(a.name); + break; + } + free(a.name); + } + + free(q.name); + if (j == a.qdcount) + return 0; + } + return 1; +} + +static void end_query (ares_channel channel, struct query *query, int status, + unsigned char *abuf, int alen) +{ + int i; + + /* First we check to see if this query ended while one of our send + * queues still has pointers to it. + */ + for (i = 0; i < channel->nservers; i++) + { + struct server_state *server = &channel->servers[i]; + struct send_request *sendreq; + for (sendreq = server->qhead; sendreq; sendreq = sendreq->next) + if (sendreq->owner_query == query) + { + sendreq->owner_query = NULL; + assert(sendreq->data_storage == NULL); + if (status == ARES_SUCCESS) + { + /* We got a reply for this query, but this queued + * sendreq points into this soon-to-be-gone query's + * tcpbuf. Probably this means we timed out and queued + * the query for retransmission, then received a + * response before actually retransmitting. This is + * perfectly fine, so we want to keep the connection + * running smoothly if we can. But in the worst case + * we may have sent only some prefix of the query, + * with some suffix of the query left to send. Also, + * the buffer may be queued on multiple queues. To + * prevent dangling pointers to the query's tcpbuf and + * handle these cases, we just give such sendreqs + * their own copy of the query packet. + */ + sendreq->data_storage = malloc(sendreq->len); + if (sendreq->data_storage != NULL) + { + memcpy(sendreq->data_storage, sendreq->data, sendreq->len); + sendreq->data = sendreq->data_storage; + } + } + if ((status != ARES_SUCCESS) || (sendreq->data_storage == NULL)) + { + /* We encountered an error (probably a timeout, + * suggesting the DNS server we're talking to is + * probably unreachable, wedged, or severely + * overloaded) or we couldn't copy the request, so + * mark the connection as broken. When we get to + * process_broken_connections() we'll close the + * connection and try to re-send requests to another + * server. + */ + server->is_broken = 1; + /* Just to be paranoid, zero out this sendreq... */ + sendreq->data = NULL; + sendreq->len = 0; + } + } + } + + /* Invoke the callback */ + query->callback(query->arg, status, query->timeouts, abuf, alen); + ares__free_query(query); + + /* Simple cleanup policy: if no queries are remaining, close all + * network sockets unless STAYOPEN is set. + */ + if (!(channel->flags & ARES_FLAG_STAYOPEN) && + ares__is_list_empty(&(channel->all_queries))) + { + for (i = 0; i < channel->nservers; i++) + ares__close_sockets(channel, &channel->servers[i]); + } +} + +void ares__free_query(struct query *query) +{ + /* Remove the query from all the lists in which it is linked */ + ares__remove_from_list(&(query->queries_by_qid)); + ares__remove_from_list(&(query->queries_by_timeout)); + ares__remove_from_list(&(query->queries_to_server)); + ares__remove_from_list(&(query->all_queries)); + /* Zero out some important stuff, to help catch bugs */ + query->callback = NULL; + query->arg = NULL; + /* Deallocate the memory associated with the query */ + free(query->tcpbuf); + free(query->server_info); + free(query); +} diff --git a/3rdParty/CAres/src/ares_query.c b/3rdParty/CAres/src/ares_query.c new file mode 100644 index 0000000..7052d7a --- /dev/null +++ b/3rdParty/CAres/src/ares_query.c @@ -0,0 +1,184 @@ +/* $Id: ares_query.c,v 1.21 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +struct qquery { + ares_callback callback; + void *arg; +}; + +static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen); + +void ares__rc4(rc4_key* key, unsigned char *buffer_ptr, int buffer_len) +{ + unsigned char x; + unsigned char y; + unsigned char* state; + unsigned char xorIndex; + short counter; + + x = key->x; + y = key->y; + + state = &key->state[0]; + for(counter = 0; counter < buffer_len; counter ++) + { + x = (unsigned char)((x + 1) % 256); + y = (unsigned char)((state[x] + y) % 256); + ARES_SWAP_BYTE(&state[x], &state[y]); + + xorIndex = (unsigned char)((state[x] + state[y]) % 256); + + buffer_ptr[counter] = (unsigned char)(buffer_ptr[counter]^state[xorIndex]); + } + key->x = x; + key->y = y; +} + +static struct query* find_query_by_id(ares_channel channel, unsigned short id) +{ + unsigned short qid; + struct list_node* list_head; + struct list_node* list_node; + DNS_HEADER_SET_QID(((unsigned char*)&qid), id); + + /* Find the query corresponding to this packet. */ + list_head = &(channel->queries_by_qid[qid % ARES_QID_TABLE_SIZE]); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) + { + struct query *q = list_node->data; + if (q->qid == qid) + return q; + } + return NULL; +} + + +/* a unique query id is generated using an rc4 key. Since the id may already + be used by a running query (as infrequent as it may be), a lookup is + performed per id generation. In practice this search should happen only + once per newly generated id +*/ +static unsigned short generate_unique_id(ares_channel channel) +{ + unsigned short id; + + do { + id = ares__generate_new_id(&channel->id_key); + } while (find_query_by_id(channel, id)); + + return (unsigned short)id; +} + +void ares_query(ares_channel channel, const char *name, int dnsclass, + int type, ares_callback callback, void *arg) +{ + struct qquery *qquery; + unsigned char *qbuf; + int qlen, rd, status; + + /* Compose the query. */ + rd = !(channel->flags & ARES_FLAG_NORECURSE); + status = ares_mkquery(name, dnsclass, type, channel->next_id, rd, &qbuf, + &qlen); + if (status != ARES_SUCCESS) + { + if (qbuf != NULL) free(qbuf); + callback(arg, status, 0, NULL, 0); + return; + } + + channel->next_id = generate_unique_id(channel); + + /* Allocate and fill in the query structure. */ + qquery = malloc(sizeof(struct qquery)); + if (!qquery) + { + ares_free_string(qbuf); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + qquery->callback = callback; + qquery->arg = arg; + + /* Send it off. qcallback will be called when we get an answer. */ + ares_send(channel, qbuf, qlen, qcallback, qquery); + ares_free_string(qbuf); +} + +static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen) +{ + struct qquery *qquery = (struct qquery *) arg; + unsigned int ancount; + int rcode; + + if (status != ARES_SUCCESS) + qquery->callback(qquery->arg, status, timeouts, abuf, alen); + else + { + /* Pull the response code and answer count from the packet. */ + rcode = DNS_HEADER_RCODE(abuf); + ancount = DNS_HEADER_ANCOUNT(abuf); + + /* Convert errors. */ + switch (rcode) + { + case NOERROR: + status = (ancount > 0) ? ARES_SUCCESS : ARES_ENODATA; + break; + case FORMERR: + status = ARES_EFORMERR; + break; + case SERVFAIL: + status = ARES_ESERVFAIL; + break; + case NXDOMAIN: + status = ARES_ENOTFOUND; + break; + case NOTIMP: + status = ARES_ENOTIMP; + break; + case REFUSED: + status = ARES_EREFUSED; + break; + } + qquery->callback(qquery->arg, status, timeouts, abuf, alen); + } + free(qquery); +} diff --git a/3rdParty/CAres/src/ares_rules.h b/3rdParty/CAres/src/ares_rules.h new file mode 100644 index 0000000..65bc1eb --- /dev/null +++ b/3rdParty/CAres/src/ares_rules.h @@ -0,0 +1,145 @@ +#ifndef __CARES_RULES_H +#define __CARES_RULES_H + +/* $Id: ares_rules.h,v 1.3 2009-10-27 16:56:20 yangtse Exp $ */ + +/* Copyright (C) 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* COMPILE TIME SANITY CHECKS */ +/* ================================================================ */ + +/* + * NOTE 1: + * ------- + * + * All checks done in this file are intentionally placed in a public + * header file which is pulled by ares.h when an application is + * being built using an already built c-ares library. Additionally + * this file is also included and used when building the library. + * + * If compilation fails on this file it is certainly sure that the + * problem is elsewhere. It could be a problem in the ares_build.h + * header file, or simply that you are using different compilation + * settings than those used to build the library. + * + * Nothing in this file is intended to be modified or adjusted by the + * c-ares library user nor by the c-ares library builder. + * + * Do not deactivate any check, these are done to make sure that the + * library is properly built and used. + * + * You can find further help on the c-ares development mailing list: + * http://cool.haxx.se/mailman/listinfo/c-ares/ + * + * NOTE 2 + * ------ + * + * Some of the following compile time checks are based on the fact + * that the dimension of a constant array can not be a negative one. + * In this way if the compile time verification fails, the compilation + * will fail issuing an error. The error description wording is compiler + * dependent but it will be quite similar to one of the following: + * + * "negative subscript or subscript is too large" + * "array must have at least one element" + * "-1 is an illegal array size" + * "size of array is negative" + * + * If you are building an application which tries to use an already + * built c-ares library and you are getting this kind of errors on + * this file, it is a clear indication that there is a mismatch between + * how the library was built and how you are trying to use it for your + * application. Your already compiled or binary library provider is the + * only one who can give you the details you need to properly use it. + */ + +/* + * Verify that some macros are actually defined. + */ + +#ifndef CARES_SIZEOF_LONG +# error "CARES_SIZEOF_LONG definition is missing!" + Error Compilation_aborted_CARES_SIZEOF_LONG_is_missing +#endif + +#ifndef CARES_TYPEOF_ARES_SOCKLEN_T +# error "CARES_TYPEOF_ARES_SOCKLEN_T definition is missing!" + Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_is_missing +#endif + +#ifndef CARES_SIZEOF_ARES_SOCKLEN_T +# error "CARES_SIZEOF_ARES_SOCKLEN_T definition is missing!" + Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_is_missing +#endif + +/* + * Macros private to this header file. + */ + +#define CareschkszEQ(t, s) sizeof(t) == s ? 1 : -1 + +#define CareschkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1 + +/* + * Verify that the size previously defined and expected for long + * is the same as the one reported by sizeof() at compile time. + */ + +typedef char + __cares_rule_01__ + [CareschkszEQ(long, CARES_SIZEOF_LONG)]; + +/* + * Verify that the size previously defined and expected for + * ares_socklen_t is actually the the same as the one reported + * by sizeof() at compile time. + */ + +typedef char + __cares_rule_02__ + [CareschkszEQ(ares_socklen_t, CARES_SIZEOF_ARES_SOCKLEN_T)]; + +/* + * Verify at compile time that the size of ares_socklen_t as reported + * by sizeof() is greater or equal than the one reported for int for + * the current compilation. + */ + +typedef char + __cares_rule_03__ + [CareschkszGE(ares_socklen_t, int)]; + +/* ================================================================ */ +/* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */ +/* ================================================================ */ + +/* + * Get rid of macros private to this header file. + */ + +#undef CareschkszEQ +#undef CareschkszGE + +/* + * Get rid of macros not intended to exist beyond this point. + */ + +#undef CARES_PULL_WS2TCPIP_H +#undef CARES_PULL_SYS_TYPES_H +#undef CARES_PULL_SYS_SOCKET_H + +#undef CARES_TYPEOF_ARES_SOCKLEN_T + +#endif /* __CARES_RULES_H */ diff --git a/3rdParty/CAres/src/ares_search.c b/3rdParty/CAres/src/ares_search.c new file mode 100644 index 0000000..9a44397 --- /dev/null +++ b/3rdParty/CAres/src/ares_search.c @@ -0,0 +1,323 @@ +/* $Id: ares_search.c,v 1.20 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +struct search_query { + /* Arguments passed to ares_search */ + ares_channel channel; + char *name; /* copied into an allocated buffer */ + int dnsclass; + int type; + ares_callback callback; + void *arg; + + int status_as_is; /* error status from trying as-is */ + int next_domain; /* next search domain to try */ + int trying_as_is; /* current query is for name as-is */ + int timeouts; /* number of timeouts we saw for this request */ + int ever_got_nodata; /* did we ever get ARES_ENODATA along the way? */ +}; + +static void search_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen); +static void end_squery(struct search_query *squery, int status, + unsigned char *abuf, int alen); +static int cat_domain(const char *name, const char *domain, char **s); +static int single_domain(ares_channel channel, const char *name, char **s); + +void ares_search(ares_channel channel, const char *name, int dnsclass, + int type, ares_callback callback, void *arg) +{ + struct search_query *squery; + char *s; + const char *p; + int status, ndots; + + /* If name only yields one domain to search, then we don't have + * to keep extra state, so just do an ares_query(). + */ + status = single_domain(channel, name, &s); + if (status != ARES_SUCCESS) + { + callback(arg, status, 0, NULL, 0); + return; + } + if (s) + { + ares_query(channel, s, dnsclass, type, callback, arg); + free(s); + return; + } + + /* Allocate a search_query structure to hold the state necessary for + * doing multiple lookups. + */ + squery = malloc(sizeof(struct search_query)); + if (!squery) + { + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + squery->channel = channel; + squery->name = strdup(name); + if (!squery->name) + { + free(squery); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + squery->dnsclass = dnsclass; + squery->type = type; + squery->status_as_is = -1; + squery->callback = callback; + squery->arg = arg; + squery->timeouts = 0; + squery->ever_got_nodata = 0; + + /* Count the number of dots in name. */ + ndots = 0; + for (p = name; *p; p++) + { + if (*p == '.') + ndots++; + } + + /* If ndots is at least the channel ndots threshold (usually 1), + * then we try the name as-is first. Otherwise, we try the name + * as-is last. + */ + if (ndots >= channel->ndots) + { + /* Try the name as-is first. */ + squery->next_domain = 0; + squery->trying_as_is = 1; + ares_query(channel, name, dnsclass, type, search_callback, squery); + } + else + { + /* Try the name as-is last; start with the first search domain. */ + squery->next_domain = 1; + squery->trying_as_is = 0; + status = cat_domain(name, channel->domains[0], &s); + if (status == ARES_SUCCESS) + { + ares_query(channel, s, dnsclass, type, search_callback, squery); + free(s); + } + else + { + /* failed, free the malloc()ed memory */ + free(squery->name); + free(squery); + callback(arg, status, 0, NULL, 0); + } + } +} + +static void search_callback(void *arg, int status, int timeouts, + unsigned char *abuf, int alen) +{ + struct search_query *squery = (struct search_query *) arg; + ares_channel channel = squery->channel; + char *s; + + squery->timeouts += timeouts; + + /* Stop searching unless we got a non-fatal error. */ + if (status != ARES_ENODATA && status != ARES_ESERVFAIL + && status != ARES_ENOTFOUND) + end_squery(squery, status, abuf, alen); + else + { + /* Save the status if we were trying as-is. */ + if (squery->trying_as_is) + squery->status_as_is = status; + + /* + * If we ever get ARES_ENODATA along the way, record that; if the search + * should run to the very end and we got at least one ARES_ENODATA, + * then callers like ares_gethostbyname() may want to try a T_A search + * even if the last domain we queried for T_AAAA resource records + * returned ARES_ENOTFOUND. + */ + if (status == ARES_ENODATA) + squery->ever_got_nodata = 1; + + if (squery->next_domain < channel->ndomains) + { + /* Try the next domain. */ + status = cat_domain(squery->name, + channel->domains[squery->next_domain], &s); + if (status != ARES_SUCCESS) + end_squery(squery, status, NULL, 0); + else + { + squery->trying_as_is = 0; + squery->next_domain++; + ares_query(channel, s, squery->dnsclass, squery->type, + search_callback, squery); + free(s); + } + } + else if (squery->status_as_is == -1) + { + /* Try the name as-is at the end. */ + squery->trying_as_is = 1; + ares_query(channel, squery->name, squery->dnsclass, squery->type, + search_callback, squery); + } + else { + if (squery->status_as_is == ARES_ENOTFOUND && squery->ever_got_nodata) { + end_squery(squery, ARES_ENODATA, NULL, 0); + } + else + end_squery(squery, squery->status_as_is, NULL, 0); + } + } +} + +static void end_squery(struct search_query *squery, int status, + unsigned char *abuf, int alen) +{ + squery->callback(squery->arg, status, squery->timeouts, abuf, alen); + free(squery->name); + free(squery); +} + +/* Concatenate two domains. */ +static int cat_domain(const char *name, const char *domain, char **s) +{ + size_t nlen = strlen(name); + size_t dlen = strlen(domain); + + *s = malloc(nlen + 1 + dlen + 1); + if (!*s) + return ARES_ENOMEM; + memcpy(*s, name, nlen); + (*s)[nlen] = '.'; + memcpy(*s + nlen + 1, domain, dlen); + (*s)[nlen + 1 + dlen] = 0; + return ARES_SUCCESS; +} + +/* Determine if this name only yields one query. If it does, set *s to + * the string we should query, in an allocated buffer. If not, set *s + * to NULL. + */ +static int single_domain(ares_channel channel, const char *name, char **s) +{ + size_t len = strlen(name); + const char *hostaliases; + FILE *fp; + char *line = NULL; + int status; + size_t linesize; + const char *p, *q; + int error; + + /* If the name contains a trailing dot, then the single query is the name + * sans the trailing dot. + */ + if (name[len - 1] == '.') + { + *s = strdup(name); + return (*s) ? ARES_SUCCESS : ARES_ENOMEM; + } + + if (!(channel->flags & ARES_FLAG_NOALIASES) && !strchr(name, '.')) + { + /* The name might be a host alias. */ + hostaliases = getenv("HOSTALIASES"); + if (hostaliases) + { + fp = fopen(hostaliases, "r"); + if (fp) + { + while ((status = ares__read_line(fp, &line, &linesize)) + == ARES_SUCCESS) + { + if (strncasecmp(line, name, len) != 0 || + !ISSPACE(line[len])) + continue; + p = line + len; + while (ISSPACE(*p)) + p++; + if (*p) + { + q = p + 1; + while (*q && !ISSPACE(*q)) + q++; + *s = malloc(q - p + 1); + if (*s) + { + memcpy(*s, p, q - p); + (*s)[q - p] = 0; + } + free(line); + fclose(fp); + return (*s) ? ARES_SUCCESS : ARES_ENOMEM; + } + } + free(line); + fclose(fp); + if (status != ARES_SUCCESS) + return status; + } + else + { + error = errno; + switch(error) + { + case ENOENT: + case ESRCH: + break; + default: + DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n", + error, strerror(error))); + DEBUGF(fprintf(stderr, "Error opening file: %s\n", + hostaliases)); + *s = NULL; + return ARES_EFILE; + } + } + } + } + + if (channel->flags & ARES_FLAG_NOSEARCH || channel->ndomains == 0) + { + /* No domain search to do; just try the name as-is. */ + *s = strdup(name); + return (*s) ? ARES_SUCCESS : ARES_ENOMEM; + } + + *s = NULL; + return ARES_SUCCESS; +} diff --git a/3rdParty/CAres/src/ares_send.c b/3rdParty/CAres/src/ares_send.c new file mode 100644 index 0000000..eb35b47 --- /dev/null +++ b/3rdParty/CAres/src/ares_send.c @@ -0,0 +1,135 @@ +/* $Id: ares_send.c,v 1.21 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include "ares.h" +#include "ares_dns.h" +#include "ares_private.h" + +void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen, + ares_callback callback, void *arg) +{ + struct query *query; + int i; + struct timeval now; + + /* Verify that the query is at least long enough to hold the header. */ + if (qlen < HFIXEDSZ || qlen >= (1 << 16)) + { + callback(arg, ARES_EBADQUERY, 0, NULL, 0); + return; + } + + /* Allocate space for query and allocated fields. */ + query = malloc(sizeof(struct query)); + if (!query) + { + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + query->tcpbuf = malloc(qlen + 2); + if (!query->tcpbuf) + { + free(query); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + query->server_info = malloc(channel->nservers * + sizeof(query->server_info[0])); + if (!query->server_info) + { + free(query->tcpbuf); + free(query); + callback(arg, ARES_ENOMEM, 0, NULL, 0); + return; + } + + /* Compute the query ID. Start with no timeout. */ + query->qid = (unsigned short)DNS_HEADER_QID(qbuf); + query->timeout.tv_sec = 0; + query->timeout.tv_usec = 0; + + /* Form the TCP query buffer by prepending qlen (as two + * network-order bytes) to qbuf. + */ + query->tcpbuf[0] = (unsigned char)((qlen >> 8) & 0xff); + query->tcpbuf[1] = (unsigned char)(qlen & 0xff); + memcpy(query->tcpbuf + 2, qbuf, qlen); + query->tcplen = qlen + 2; + + /* Fill in query arguments. */ + query->qbuf = query->tcpbuf + 2; + query->qlen = qlen; + query->callback = callback; + query->arg = arg; + + /* Initialize query status. */ + query->try = 0; + + /* Choose the server to send the query to. If rotation is enabled, keep track + * of the next server we want to use. */ + query->server = channel->last_server; + if (channel->rotate == 1) + channel->last_server = (channel->last_server + 1) % channel->nservers; + + for (i = 0; i < channel->nservers; i++) + { + query->server_info[i].skip_server = 0; + query->server_info[i].tcp_connection_generation = 0; + } + query->using_tcp = (channel->flags & ARES_FLAG_USEVC) || qlen > PACKETSZ; + query->error_status = ARES_ECONNREFUSED; + query->timeouts = 0; + + /* Initialize our list nodes. */ + ares__init_list_node(&(query->queries_by_qid), query); + ares__init_list_node(&(query->queries_by_timeout), query); + ares__init_list_node(&(query->queries_to_server), query); + ares__init_list_node(&(query->all_queries), query); + + /* Chain the query into the list of all queries. */ + ares__insert_in_list(&(query->all_queries), &(channel->all_queries)); + /* Keep track of queries bucketed by qid, so we can process DNS + * responses quickly. + */ + ares__insert_in_list( + &(query->queries_by_qid), + &(channel->queries_by_qid[query->qid % ARES_QID_TABLE_SIZE])); + + /* Perform the first query action. */ + now = ares__tvnow(); + ares__send_query(channel, query, &now); +} diff --git a/3rdParty/CAres/src/ares_setup.h b/3rdParty/CAres/src/ares_setup.h new file mode 100644 index 0000000..5ce9398 --- /dev/null +++ b/3rdParty/CAres/src/ares_setup.h @@ -0,0 +1,198 @@ +#ifndef HEADER_CARES_SETUP_H +#define HEADER_CARES_SETUP_H + +/* $Id: ares_setup.h,v 1.2 2009-11-14 18:51:37 yangtse Exp $ */ + +/* Copyright (C) 2004 - 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* + * Define WIN32 when build target is Win32 API + */ + +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +#define WIN32 +#endif + +/* + * Include configuration script results or hand-crafted + * configuration file for platforms which lack config tool. + */ + +#ifdef HAVE_CONFIG_H +#include "ares_config.h" +#else + +#ifdef WIN32 +#include "config-win32.h" +#endif + +#endif /* HAVE_CONFIG_H */ + +/* ================================================================ */ +/* Definition of preprocessor macros/symbols which modify compiler */ +/* behaviour or generated code characteristics must be done here, */ +/* as appropriate, before any system header file is included. It is */ +/* also possible to have them defined in the config file included */ +/* before this point. As a result of all this we frown inclusion of */ +/* system header files in our config files, avoid this at any cost. */ +/* ================================================================ */ + +/* + * AIX 4.3 and newer needs _THREAD_SAFE defined to build + * proper reentrant code. Others may also need it. + */ + +#ifdef NEED_THREAD_SAFE +# ifndef _THREAD_SAFE +# define _THREAD_SAFE +# endif +#endif + +/* + * Tru64 needs _REENTRANT set for a few function prototypes and + * things to appear in the system header files. Unixware needs it + * to build proper reentrant code. Others may also need it. + */ + +#ifdef NEED_REENTRANT +# ifndef _REENTRANT +# define _REENTRANT +# endif +#endif + +/* ================================================================ */ +/* If you need to include a system header file for your platform, */ +/* please, do it beyond the point further indicated in this file. */ +/* ================================================================ */ + +/* + * c-ares external interface definitions are also used internally, + * and might also include required system header files to define them. + */ + +#include <ares_build.h> + +/* + * Compile time sanity checks must also be done when building the library. + */ + +#include <ares_rules.h> + +/* ================================================================= */ +/* No system header file shall be included in this file before this */ +/* point. The only allowed ones are those included from ares_build.h */ +/* ================================================================= */ + +/* + * Include header files for windows builds before redefining anything. + * Use this preproessor block only to include or exclude windows.h, + * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs + * to any other further and independent block. Under Cygwin things work + * just as under linux (e.g. <sys/socket.h>) and the winsock headers should + * never be included when __CYGWIN__ is defined. configure script takes + * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H, + * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined. + */ + +#ifdef HAVE_WINDOWS_H +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# include <windows.h> +# ifdef HAVE_WINSOCK2_H +# include <winsock2.h> +# ifdef HAVE_WS2TCPIP_H +# include <ws2tcpip.h> +# endif +# else +# ifdef HAVE_WINSOCK_H +# include <winsock.h> +# endif +# endif +#endif + +/* + * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else + * define USE_WINSOCK to 1 if we have and use WINSOCK API, else + * undefine USE_WINSOCK. + */ + +#undef USE_WINSOCK + +#ifdef HAVE_WINSOCK2_H +# define USE_WINSOCK 2 +#else +# ifdef HAVE_WINSOCK_H +# define USE_WINSOCK 1 +# endif +#endif + +/* + * Work-arounds for systems without configure support + */ + +#ifndef HAVE_CONFIG_H + +#if !defined(HAVE_SYS_TIME_H) && !defined(_MSC_VER) && !defined(__WATCOMC__) +#define HAVE_SYS_TIME_H +#endif + +#if !defined(HAVE_UNISTD_H) && !defined(_MSC_VER) +#define HAVE_UNISTD_H 1 +#endif + +#if !defined(HAVE_SYS_UIO_H) && !defined(WIN32) && !defined(MSDOS) +#define HAVE_SYS_UIO_H +#endif + +#endif /* HAVE_CONFIG_H */ + +#ifdef __POCC__ +# include <sys/types.h> +# include <unistd.h> +# define ESRCH 3 +#endif + +/* + * Recent autoconf versions define these symbols in ares_config.h. We don't + * want them (since they collide with the libcurl ones when we build + * --enable-debug) so we undef them again here. + */ + +#undef PACKAGE_STRING +#undef PACKAGE_TARNAME +#undef PACKAGE_VERSION +#undef PACKAGE_BUGREPORT +#undef PACKAGE_NAME +#undef VERSION +#undef PACKAGE + +/* IPv6 compatibility */ +#if !defined(HAVE_AF_INET6) +#if defined(HAVE_PF_INET6) +#define AF_INET6 PF_INET6 +#else +#define AF_INET6 AF_MAX+1 +#endif +#endif + +/* + * Include macros and defines that should only be processed once. + */ + +#ifndef __SETUP_ONCE_H +#include "setup_once.h" +#endif + +#endif /* HEADER_CARES_SETUP_H */ diff --git a/3rdParty/CAres/src/ares_strcasecmp.c b/3rdParty/CAres/src/ares_strcasecmp.c new file mode 100644 index 0000000..8329e30 --- /dev/null +++ b/3rdParty/CAres/src/ares_strcasecmp.c @@ -0,0 +1,67 @@ + +/* $Id: ares_strcasecmp.c,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares_strcasecmp.h" + +#ifndef HAVE_STRCASECMP +int ares_strcasecmp(const char *a, const char *b) +{ +#if defined(HAVE_STRCMPI) + return strcmpi(a, b); +#elif defined(HAVE_STRICMP) + return stricmp(a, b); +#else + size_t i; + + for (i = 0; i < (size_t)-1; i++) { + int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i]; + int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i]; + if (c1 != c2) + return c1-c2; + if (!c1) + break; + } + return 0; +#endif +} +#endif + +#ifndef HAVE_STRNCASECMP +int ares_strncasecmp(const char *a, const char *b, size_t n) +{ +#if defined(HAVE_STRNCMPI) + return strncmpi(a, b, n); +#elif defined(HAVE_STRNICMP) + return strnicmp(a, b, n); +#else + size_t i; + + for (i = 0; i < n; i++) { + int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i]; + int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i]; + if (c1 != c2) + return c1-c2; + if (!c1) + break; + } + return 0; +#endif +} +#endif + diff --git a/3rdParty/CAres/src/ares_strcasecmp.h b/3rdParty/CAres/src/ares_strcasecmp.h new file mode 100644 index 0000000..db170be --- /dev/null +++ b/3rdParty/CAres/src/ares_strcasecmp.h @@ -0,0 +1,31 @@ +#ifndef HEADER_CARES_STRCASECMP_H +#define HEADER_CARES_STRCASECMP_H + +/* $Id: ares_strcasecmp.h,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifndef HAVE_STRCASECMP +extern int ares_strcasecmp(const char *a, const char *b); +#endif + +#ifndef HAVE_STRNCASECMP +extern int ares_strncasecmp(const char *a, const char *b, size_t n); +#endif + +#endif /* HEADER_CARES_STRCASECMP_H */ diff --git a/3rdParty/CAres/src/ares_strdup.c b/3rdParty/CAres/src/ares_strdup.c new file mode 100644 index 0000000..d3f2b22 --- /dev/null +++ b/3rdParty/CAres/src/ares_strdup.c @@ -0,0 +1,43 @@ + +/* $Id: ares_strdup.c,v 1.3 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares_strdup.h" + +#ifndef HAVE_STRDUP +char *ares_strdup(const char *s1) +{ + size_t sz; + char * s2; + + if(s1) { + sz = strlen(s1); + if(sz < (size_t)-1) { + sz++; + if(sz < ((size_t)-1) / sizeof(char)) { + s2 = malloc(sz * sizeof(char)); + if(s2) { + memcpy(s2, s1, sz * sizeof(char)); + return s2; + } + } + } + } + return (char *)NULL; +} +#endif diff --git a/3rdParty/CAres/src/ares_strdup.h b/3rdParty/CAres/src/ares_strdup.h new file mode 100644 index 0000000..f88f8d1 --- /dev/null +++ b/3rdParty/CAres/src/ares_strdup.h @@ -0,0 +1,27 @@ +#ifndef HEADER_CARES_STRDUP_H +#define HEADER_CARES_STRDUP_H + +/* $Id: ares_strdup.h,v 1.3 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifndef HAVE_STRDUP +extern char *ares_strdup(const char *s1); +#endif + +#endif /* HEADER_CARES_STRDUP_H */ diff --git a/3rdParty/CAres/src/ares_strerror.c b/3rdParty/CAres/src/ares_strerror.c new file mode 100644 index 0000000..57fcf8f --- /dev/null +++ b/3rdParty/CAres/src/ares_strerror.c @@ -0,0 +1,57 @@ +/* $Id: ares_strerror.c,v 1.18 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include <assert.h> +#include "ares.h" + +const char *ares_strerror(int code) +{ + /* Return a string literal from a table. */ + const char *errtext[] = { + "Successful completion", + "DNS server returned answer with no data", + "DNS server claims query was misformatted", + "DNS server returned general failure", + "Domain name not found", + "DNS server does not implement requested operation", + "DNS server refused query", + "Misformatted DNS query", + "Misformatted domain name", + "Unsupported address family", + "Misformatted DNS reply", + "Could not contact DNS servers", + "Timeout while contacting DNS servers", + "End of file", + "Error reading file", + "Out of memory", + "Channel is being destroyed", + "Misformatted string", + "Illegal flags specified", + "Given hostname is not numeric", + "Illegal hints flags specified", + "c-ares library initialization not yet performed", + "Error loading iphlpapi.dll", + "Could not find GetNetworkParams function", + "DNS query cancelled" + }; + + if(code >= 0 && code < (int)(sizeof(errtext) / sizeof(*errtext))) + return errtext[code]; + else + return "unknown"; +} diff --git a/3rdParty/CAres/src/ares_timeout.c b/3rdParty/CAres/src/ares_timeout.c new file mode 100644 index 0000000..a522de7 --- /dev/null +++ b/3rdParty/CAres/src/ares_timeout.c @@ -0,0 +1,81 @@ +/* $Id: ares_timeout.c,v 1.13 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif + +#include <time.h> + +#include "ares.h" +#include "ares_private.h" + +/* WARNING: Beware that this is linear in the number of outstanding + * requests! You are probably far better off just calling ares_process() + * once per second, rather than calling ares_timeout() to figure out + * when to next call ares_process(). + */ +struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv, + struct timeval *tvbuf) +{ + struct query *query; + struct list_node* list_head; + struct list_node* list_node; + struct timeval now; + struct timeval nextstop; + long offset, min_offset; + + /* No queries, no timeout (and no fetch of the current time). */ + if (ares__is_list_empty(&(channel->all_queries))) + return maxtv; + + /* Find the minimum timeout for the current set of queries. */ + now = ares__tvnow(); + min_offset = -1; + + list_head = &(channel->all_queries); + for (list_node = list_head->next; list_node != list_head; + list_node = list_node->next) + { + query = list_node->data; + if (query->timeout.tv_sec == 0) + continue; + offset = ares__timeoffset(&now, &query->timeout); + if (offset < 0) + offset = 0; + if (min_offset == -1 || offset < min_offset) + min_offset = offset; + } + + if(min_offset != -1) { + nextstop.tv_sec = min_offset/1000; + nextstop.tv_usec = (min_offset%1000)*1000; + } + + /* If we found a minimum timeout and it's sooner than the one specified in + * maxtv (if any), return it. Otherwise go with maxtv. + */ + if (min_offset != -1 && (!maxtv || ares__timedout(maxtv, &nextstop))) + { + *tvbuf = nextstop; + return tvbuf; + } + else + return maxtv; +} diff --git a/3rdParty/CAres/src/ares_version.c b/3rdParty/CAres/src/ares_version.c new file mode 100644 index 0000000..3007150 --- /dev/null +++ b/3rdParty/CAres/src/ares_version.c @@ -0,0 +1,12 @@ +/* $Id: ares_version.c,v 1.5 2009-11-02 11:55:53 yangtse Exp $ */ + +#include "ares_setup.h" +#include "ares.h" + +const char *ares_version(int *version) +{ + if(version) + *version = ARES_VERSION; + + return ARES_VERSION_STR; +} diff --git a/3rdParty/CAres/src/ares_version.h b/3rdParty/CAres/src/ares_version.h new file mode 100644 index 0000000..d3a6295 --- /dev/null +++ b/3rdParty/CAres/src/ares_version.h @@ -0,0 +1,22 @@ +/* $Id: ares_version.h,v 1.19 2009-11-23 12:03:33 yangtse Exp $ */ + +#ifndef ARES__VERSION_H +#define ARES__VERSION_H + +#define ARES_VERSION_MAJOR 1 +#define ARES_VERSION_MINOR 7 +#define ARES_VERSION_PATCH 0 +#define ARES_VERSION ((ARES_VERSION_MAJOR<<16)|\ + (ARES_VERSION_MINOR<<8)|\ + (ARES_VERSION_PATCH)) +#define ARES_VERSION_STR "1.7.0" + +#if (ARES_VERSION >= 0x010700) +# define CARES_HAVE_ARES_LIBRARY_INIT 1 +# define CARES_HAVE_ARES_LIBRARY_CLEANUP 1 +#else +# undef CARES_HAVE_ARES_LIBRARY_INIT +# undef CARES_HAVE_ARES_LIBRARY_CLEANUP +#endif + +#endif diff --git a/3rdParty/CAres/src/ares_writev.c b/3rdParty/CAres/src/ares_writev.c new file mode 100644 index 0000000..855ce14 --- /dev/null +++ b/3rdParty/CAres/src/ares_writev.c @@ -0,0 +1,80 @@ + +/* $Id: ares_writev.c,v 1.3 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" + +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif + +#include "ares.h" +#include "ares_private.h" + +#ifndef HAVE_WRITEV +ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt) +{ + char *buffer, *bp; + int i; + size_t bytes = 0; + ssize_t result; + + /* Validate iovcnt */ + if (iovcnt <= 0) + { + SET_ERRNO(EINVAL); + return (-1); + } + + /* Validate and find the sum of the iov_len values in the iov array */ + for (i = 0; i < iovcnt; i++) + { + if (iov[i].iov_len > INT_MAX - bytes) + { + SET_ERRNO(EINVAL); + return (-1); + } + bytes += iov[i].iov_len; + } + + if (bytes == 0) + return (0); + + /* Allocate a temporary buffer to hold the data */ + buffer = malloc(bytes); + if (!buffer) + { + SET_ERRNO(ENOMEM); + return (-1); + } + + /* Copy the data into buffer */ + for (bp = buffer, i = 0; i < iovcnt; ++i) + { + memcpy (bp, iov[i].iov_base, iov[i].iov_len); + bp += iov[i].iov_len; + } + + /* Send buffer contents */ + result = swrite(s, buffer, bytes); + + free(buffer); + + return (result); +} +#endif + diff --git a/3rdParty/CAres/src/ares_writev.h b/3rdParty/CAres/src/ares_writev.h new file mode 100644 index 0000000..631baf8 --- /dev/null +++ b/3rdParty/CAres/src/ares_writev.h @@ -0,0 +1,37 @@ +#ifndef HEADER_CARES_WRITEV_H +#define HEADER_CARES_WRITEV_H + +/* $Id: ares_writev.h,v 1.2 2009-11-02 11:55:53 yangtse Exp $ */ + +/* Copyright 1998 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#include "ares_setup.h" +#include "ares.h" + +#ifndef HAVE_WRITEV + +/* Structure for scatter/gather I/O. */ +struct iovec +{ + void *iov_base; /* Pointer to data. */ + size_t iov_len; /* Length of data. */ +}; + +extern ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt); + +#endif + +#endif /* HEADER_CARES_WRITEV_H */ diff --git a/3rdParty/CAres/src/bitncmp.c b/3rdParty/CAres/src/bitncmp.c new file mode 100644 index 0000000..f36ffaa --- /dev/null +++ b/3rdParty/CAres/src/bitncmp.c @@ -0,0 +1,60 @@ +/* $Id: bitncmp.c,v 1.8 2009-11-02 11:55:54 yangtse Exp $ */ + +/* + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 1996,1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HAVE_BITNCMP + +#include "ares_setup.h" +#include "bitncmp.h" + +/* + * int + * bitncmp(l, r, n) + * compare bit masks l and r, for n bits. + * return: + * -1, 1, or 0 in the libc tradition. + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0x11110000 in its fourth octet. + * author: + * Paul Vixie (ISC), June 1996 + */ +int +ares_bitncmp(const void *l, const void *r, int n) { + unsigned int lb, rb; + int x, b; + + b = n / 8; + x = memcmp(l, r, b); + if (x || (n % 8) == 0) + return (x); + + lb = ((const unsigned char *)l)[b]; + rb = ((const unsigned char *)r)[b]; + for (b = n % 8; b > 0; b--) { + if ((lb & 0x80) != (rb & 0x80)) { + if (lb & 0x80) + return (1); + return (-1); + } + lb <<= 1; + rb <<= 1; + } + return (0); +} +#endif diff --git a/3rdParty/CAres/src/bitncmp.h b/3rdParty/CAres/src/bitncmp.h new file mode 100644 index 0000000..4805683 --- /dev/null +++ b/3rdParty/CAres/src/bitncmp.h @@ -0,0 +1,27 @@ +#ifndef __ARES_BITNCMP_H +#define __ARES_BITNCMP_H + +/* $Id: bitncmp.h,v 1.3 2007-11-19 15:47:01 bagder Exp $ */ + +/* Copyright (C) 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifndef HAVE_BITNCMP +int ares_bitncmp(const void *l, const void *r, int n); +#else +#define ares_bitncmp(x,y,z) bitncmp(x,y,z) +#endif + +#endif /* __ARES_BITNCMP_H */ diff --git a/3rdParty/CAres/src/config-win32.h b/3rdParty/CAres/src/config-win32.h new file mode 100644 index 0000000..295df81 --- /dev/null +++ b/3rdParty/CAres/src/config-win32.h @@ -0,0 +1,341 @@ +#ifndef __ARES_CONFIG_WIN32_H +#define __ARES_CONFIG_WIN32_H + +/* $Id: config-win32.h,v 1.32 2009-10-27 16:38:42 yangtse Exp $ */ + +/* Copyright (C) 2004 - 2008 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* ================================================================ */ +/* ares/config-win32.h - Hand crafted config file for Windows */ +/* ================================================================ */ + +/* ---------------------------------------------------------------- */ +/* HEADER FILES */ +/* ---------------------------------------------------------------- */ + +/* Define if you have the <getopt.h> header file. */ +#if defined(__MINGW32__) || defined(__POCC__) +#define HAVE_GETOPT_H 1 +#endif + +/* Define if you have the <limits.h> header file. */ +#define HAVE_LIMITS_H 1 + +/* Define if you have the <process.h> header file. */ +#ifndef __SALFORDC__ +#define HAVE_PROCESS_H 1 +#endif + +/* Define if you have the <signal.h> header file. */ +#define HAVE_SIGNAL_H 1 + +/* Define if you have the <sys/time.h> header file */ +/* #define HAVE_SYS_TIME_H 1 */ + +/* Define if you have the <time.h> header file. */ +#define HAVE_TIME_H 1 + +/* Define if you have the <unistd.h> header file. */ +#if defined(__MINGW32__) || defined(__WATCOMC__) || defined(__LCC__) || \ + defined(__POCC__) +#define HAVE_UNISTD_H 1 +#endif + +/* Define if you have the <windows.h> header file. */ +#define HAVE_WINDOWS_H 1 + +/* Define if you have the <winsock.h> header file. */ +#define HAVE_WINSOCK_H 1 + +/* Define if you have the <winsock2.h> header file. */ +#ifndef __SALFORDC__ +#define HAVE_WINSOCK2_H 1 +#endif + +/* Define if you have the <ws2tcpip.h> header file. */ +#ifndef __SALFORDC__ +#define HAVE_WS2TCPIP_H 1 +#endif + +/* ---------------------------------------------------------------- */ +/* OTHER HEADER INFO */ +/* ---------------------------------------------------------------- */ + +/* Define if sig_atomic_t is an available typedef. */ +#define HAVE_SIG_ATOMIC_T 1 + +/* Define if you have the ANSI C header files. */ +#define STDC_HEADERS 1 + +/* Define if you can safely include both <sys/time.h> and <time.h>. */ +/* #define TIME_WITH_SYS_TIME 1 */ + +/* ---------------------------------------------------------------- */ +/* FUNCTIONS */ +/* ---------------------------------------------------------------- */ + +/* Define if you have the gethostname function. */ +#define HAVE_GETHOSTNAME 1 + +/* Define if you have the ioctlsocket function. */ +#define HAVE_IOCTLSOCKET 1 + +/* Define if you have a working ioctlsocket FIONBIO function. */ +#define HAVE_IOCTLSOCKET_FIONBIO 1 + +/* Define if you have the strcasecmp function. */ +/* #define HAVE_STRCASECMP 1 */ + +/* Define if you have the strdup function. */ +#define HAVE_STRDUP 1 + +/* Define if you have the stricmp function. */ +#define HAVE_STRICMP 1 + +/* Define if you have the strncasecmp function. */ +/* #define HAVE_STRNCASECMP 1 */ + +/* Define if you have the strnicmp function. */ +#define HAVE_STRNICMP 1 + +/* Define if you have the recv function. */ +#define HAVE_RECV 1 + +/* Define to the type of arg 1 for recv. */ +#define RECV_TYPE_ARG1 SOCKET + +/* Define to the type of arg 2 for recv. */ +#define RECV_TYPE_ARG2 char * + +/* Define to the type of arg 3 for recv. */ +#define RECV_TYPE_ARG3 int + +/* Define to the type of arg 4 for recv. */ +#define RECV_TYPE_ARG4 int + +/* Define to the function return type for recv. */ +#define RECV_TYPE_RETV int + +/* Define if you have the recvfrom function. */ +#define HAVE_RECVFROM 1 + +/* Define to the type of arg 1 for recvfrom. */ +#define RECVFROM_TYPE_ARG1 SOCKET + +/* Define to the type pointed by arg 2 for recvfrom. */ +#define RECVFROM_TYPE_ARG2 char + +/* Define to the type of arg 3 for recvfrom. */ +#define RECVFROM_TYPE_ARG3 int + +/* Define to the type of arg 4 for recvfrom. */ +#define RECVFROM_TYPE_ARG4 int + +/* Define to the type pointed by arg 5 for recvfrom. */ +#define RECVFROM_TYPE_ARG5 struct sockaddr + +/* Define to the type pointed by arg 6 for recvfrom. */ +#define RECVFROM_TYPE_ARG6 int + +/* Define to the function return type for recvfrom. */ +#define RECVFROM_TYPE_RETV int + +/* Define if you have the send function. */ +#define HAVE_SEND 1 + +/* Define to the type of arg 1 for send. */ +#define SEND_TYPE_ARG1 SOCKET + +/* Define to the type qualifier of arg 2 for send. */ +#define SEND_QUAL_ARG2 const + +/* Define to the type of arg 2 for send. */ +#define SEND_TYPE_ARG2 char * + +/* Define to the type of arg 3 for send. */ +#define SEND_TYPE_ARG3 int + +/* Define to the type of arg 4 for send. */ +#define SEND_TYPE_ARG4 int + +/* Define to the function return type for send. */ +#define SEND_TYPE_RETV int + +/* Specifics for the Watt-32 tcp/ip stack */ +#ifdef WATT32 + #define SOCKET int + #define NS_INADDRSZ 4 + #define HAVE_ARPA_NAMESER_H 1 + #define HAVE_ARPA_INET_H 1 + #define HAVE_NETDB_H 1 + #define HAVE_NETINET_IN_H 1 + #define HAVE_SYS_SOCKET_H 1 + #define HAVE_NETINET_TCP_H 1 + #define HAVE_AF_INET6 1 + #define HAVE_PF_INET6 1 + #define HAVE_STRUCT_IN6_ADDR 1 + #define HAVE_STRUCT_SOCKADDR_IN6 1 + #undef HAVE_WINSOCK_H + #undef HAVE_WINSOCK2_H + #undef HAVE_WS2TCPIP_H +#endif + +/* ---------------------------------------------------------------- */ +/* TYPEDEF REPLACEMENTS */ +/* ---------------------------------------------------------------- */ + +/* Define this if in_addr_t is not an available 'typedefed' type */ +#define in_addr_t unsigned long + +/* Define as the return type of signal handlers (int or void). */ +#define RETSIGTYPE void + +/* Define ssize_t if it is not an available 'typedefed' type */ +#ifndef _SSIZE_T_DEFINED +# if (defined(__WATCOMC__) && (__WATCOMC__ >= 1240)) || \ + defined(__POCC__) || \ + defined(__MINGW32__) +# elif defined(_WIN64) +# define _SSIZE_T_DEFINED +# define ssize_t __int64 +# else +# define _SSIZE_T_DEFINED +# define ssize_t int +# endif +#endif + +/* ---------------------------------------------------------------- */ +/* STRUCT RELATED */ +/* ---------------------------------------------------------------- */ + +/* Define this if you have struct addrinfo */ +#define HAVE_STRUCT_ADDRINFO 1 + +/* Define this if you have struct sockaddr_storage */ +#ifndef __SALFORDC__ +#define HAVE_STRUCT_SOCKADDR_STORAGE 1 +#endif + +/* Define this if you have struct timeval */ +#define HAVE_STRUCT_TIMEVAL 1 + +/* ---------------------------------------------------------------- */ +/* COMPILER SPECIFIC */ +/* ---------------------------------------------------------------- */ + +/* Define to avoid VS2005 complaining about portable C functions */ +#if defined(_MSC_VER) && (_MSC_VER >= 1400) +#define _CRT_SECURE_NO_DEPRECATE 1 +#define _CRT_NONSTDC_NO_DEPRECATE 1 +#endif + +/* Officially, Microsoft's Windows SDK versions 6.X do not support Windows + 2000 as a supported build target. VS2008 default installations provide an + embedded Windows SDK v6.0A along with the claim that Windows 2000 is a + valid build target for VS2008. Popular belief is that binaries built using + Windows SDK versions 6.X and Windows 2000 as a build target are functional */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) +# define VS2008_MINIMUM_TARGET 0x0500 +#endif + +/* When no build target is specified VS2008 default build target is Windows + Vista, which leaves out even Winsows XP. If no build target has been given + for VS2008 we will target the minimum Officially supported build target, + which happens to be Windows XP. */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) +# define VS2008_DEFAULT_TARGET 0x0501 +#endif + +/* VS2008 default target settings and minimum build target check */ +#if defined(_MSC_VER) && (_MSC_VER >= 1500) +# ifndef _WIN32_WINNT +# define _WIN32_WINNT VS2008_DEFAULT_TARGET +# endif +# ifndef WINVER +# define WINVER VS2008_DEFAULT_TARGET +# endif +# if (_WIN32_WINNT < VS2008_MINIMUM_TARGET) || (WINVER < VS2008_MINIMUM_TARGET) +# error VS2008 does not support Windows build targets prior to Windows 2000 +# endif +#endif + +/* When no build target is specified Pelles C 5.00 and later default build + target is Windows Vista. We override default target to be Windows 2000. */ +#if defined(__POCC__) && (__POCC__ >= 500) +# ifndef _WIN32_WINNT +# define _WIN32_WINNT 0x0500 +# endif +# ifndef WINVER +# define WINVER 0x0500 +# endif +#endif + +/* Availability of freeaddrinfo, getaddrinfo and getnameinfo functions is + quite convoluted, compiler dependent and even build target dependent. */ +#if defined(HAVE_WS2TCPIP_H) +# if defined(__POCC__) +# define HAVE_FREEADDRINFO 1 +# define HAVE_GETADDRINFO 1 +# define HAVE_GETNAMEINFO 1 +# elif defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501) +# define HAVE_FREEADDRINFO 1 +# define HAVE_GETADDRINFO 1 +# define HAVE_GETNAMEINFO 1 +# elif defined(_MSC_VER) && (_MSC_VER >= 1200) +# define HAVE_FREEADDRINFO 1 +# define HAVE_GETADDRINFO 1 +# define HAVE_GETNAMEINFO 1 +# endif +#endif + +#if defined(__POCC__) +# ifndef _MSC_VER +# error Microsoft extensions /Ze compiler option is required +# endif +# ifndef __POCC__OLDNAMES +# error Compatibility names /Go compiler option is required +# endif +#endif + +/* ---------------------------------------------------------------- */ +/* IPV6 COMPATIBILITY */ +/* ---------------------------------------------------------------- */ + +/* Define this if you have address family AF_INET6 */ +#ifdef HAVE_WINSOCK2_H +#define HAVE_AF_INET6 1 +#endif + +/* Define this if you have protocol family PF_INET6 */ +#ifdef HAVE_WINSOCK2_H +#define HAVE_PF_INET6 1 +#endif + +/* Define this if you have struct in6_addr */ +#ifdef HAVE_WS2TCPIP_H +#define HAVE_STRUCT_IN6_ADDR 1 +#endif + +/* Define this if you have struct sockaddr_in6 */ +#ifdef HAVE_WS2TCPIP_H +#define HAVE_STRUCT_SOCKADDR_IN6 1 +#endif + +/* Define this if you have sockaddr_in6 with scopeid */ +#ifdef HAVE_WS2TCPIP_H +#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1 +#endif + + +#endif /* __ARES_CONFIG_WIN32_H */ diff --git a/3rdParty/CAres/src/inet_net_pton.c b/3rdParty/CAres/src/inet_net_pton.c new file mode 100644 index 0000000..de09ace --- /dev/null +++ b/3rdParty/CAres/src/inet_net_pton.c @@ -0,0 +1,446 @@ +/* $Id: inet_net_pton.c,v 1.17 2009-11-02 11:55:54 yangtse Exp $ */ + +/* + * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 1996,1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include "ares_ipv6.h" +#include "inet_net_pton.h" + +#if !defined(HAVE_INET_NET_PTON) || !defined(HAVE_INET_NET_PTON_IPV6) + +/* + * static int + * inet_net_pton_ipv4(src, dst, size) + * convert IPv4 network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not an IPv4 network specification. + * note: + * network byte order assumed. this means 192.5.5.240/28 has + * 0b11110000 in its fourth octet. + * note: + * On Windows we store the error in the thread errno, not + * in the winsock error code. This is to avoid loosing the + * actual last winsock error. So use macro ERRNO to fetch the + * errno this funtion sets when returning (-1), not SOCKERRNO. + * author: + * Paul Vixie (ISC), June 1996 + */ +static int +inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size) +{ + static const char xdigits[] = "0123456789abcdef"; + static const char digits[] = "0123456789"; + int n, ch, tmp = 0, dirty, bits; + const unsigned char *odst = dst; + + ch = *src++; + if (ch == '0' && (src[0] == 'x' || src[0] == 'X') + && ISXDIGIT(src[1])) { + /* Hexadecimal: Eat nybble string. */ + if (!size) + goto emsgsize; + dirty = 0; + src++; /* skip x or X. */ + while ((ch = *src++) != '\0' && ISXDIGIT(ch)) { + if (ISUPPER(ch)) + ch = tolower(ch); + n = (int)(strchr(xdigits, ch) - xdigits); + if (dirty == 0) + tmp = n; + else + tmp = (tmp << 4) | n; + if (++dirty == 2) { + if (!size--) + goto emsgsize; + *dst++ = (unsigned char) tmp; + dirty = 0; + } + } + if (dirty) { /* Odd trailing nybble? */ + if (!size--) + goto emsgsize; + *dst++ = (unsigned char) (tmp << 4); + } + } else if (ISDIGIT(ch)) { + /* Decimal: eat dotted digit string. */ + for (;;) { + tmp = 0; + do { + n = (int)(strchr(digits, ch) - digits); + tmp *= 10; + tmp += n; + if (tmp > 255) + goto enoent; + } while ((ch = *src++) != '\0' && + ISDIGIT(ch)); + if (!size--) + goto emsgsize; + *dst++ = (unsigned char) tmp; + if (ch == '\0' || ch == '/') + break; + if (ch != '.') + goto enoent; + ch = *src++; + if (!ISDIGIT(ch)) + goto enoent; + } + } else + goto enoent; + + bits = -1; + if (ch == '/' && + ISDIGIT(src[0]) && dst > odst) { + /* CIDR width specifier. Nothing can follow it. */ + ch = *src++; /* Skip over the /. */ + bits = 0; + do { + n = (int)(strchr(digits, ch) - digits); + bits *= 10; + bits += n; + } while ((ch = *src++) != '\0' && ISDIGIT(ch)); + if (ch != '\0') + goto enoent; + if (bits > 32) + goto emsgsize; + } + + /* Firey death and destruction unless we prefetched EOS. */ + if (ch != '\0') + goto enoent; + + /* If nothing was written to the destination, we found no address. */ + if (dst == odst) + goto enoent; + /* If no CIDR spec was given, infer width from net class. */ + if (bits == -1) { + if (*odst >= 240) /* Class E */ + bits = 32; + else if (*odst >= 224) /* Class D */ + bits = 8; + else if (*odst >= 192) /* Class C */ + bits = 24; + else if (*odst >= 128) /* Class B */ + bits = 16; + else /* Class A */ + bits = 8; + /* If imputed mask is narrower than specified octets, widen. */ + if (bits < ((dst - odst) * 8)) + bits = (int)(dst - odst) * 8; + /* + * If there are no additional bits specified for a class D + * address adjust bits to 4. + */ + if (bits == 8 && *odst == 224) + bits = 4; + } + /* Extend network to cover the actual mask. */ + while (bits > ((dst - odst) * 8)) { + if (!size--) + goto emsgsize; + *dst++ = '\0'; + } + return (bits); + + enoent: + SET_ERRNO(ENOENT); + return (-1); + + emsgsize: + SET_ERRNO(EMSGSIZE); + return (-1); +} + +static int +getbits(const char *src, int *bitsp) +{ + static const char digits[] = "0123456789"; + int n; + int val; + char ch; + + val = 0; + n = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + pch = strchr(digits, ch); + if (pch != NULL) { + if (n++ != 0 && val == 0) /* no leading zeros */ + return (0); + val *= 10; + val += (pch - digits); + if (val > 128) /* range */ + return (0); + continue; + } + return (0); + } + if (n == 0) + return (0); + *bitsp = val; + return (1); +} + +static int +getv4(const char *src, unsigned char *dst, int *bitsp) +{ + static const char digits[] = "0123456789"; + unsigned char *odst = dst; + int n; + unsigned int val; + char ch; + + val = 0; + n = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + pch = strchr(digits, ch); + if (pch != NULL) { + if (n++ != 0 && val == 0) /* no leading zeros */ + return (0); + val *= 10; + val += (pch - digits); + if (val > 255) /* range */ + return (0); + continue; + } + if (ch == '.' || ch == '/') { + if (dst - odst > 3) /* too many octets? */ + return (0); + *dst++ = (unsigned char)val; + if (ch == '/') + return (getbits(src, bitsp)); + val = 0; + n = 0; + continue; + } + return (0); + } + if (n == 0) + return (0); + if (dst - odst > 3) /* too many octets? */ + return (0); + *dst++ = (unsigned char)val; + return (1); +} + +static int +inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size) +{ + static const char xdigits_l[] = "0123456789abcdef", + xdigits_u[] = "0123456789ABCDEF"; + unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; + const char *xdigits, *curtok; + int ch, saw_xdigit; + unsigned int val; + int digits; + int bits; + size_t bytes; + int words; + int ipv4; + + memset((tp = tmp), '\0', NS_IN6ADDRSZ); + endp = tp + NS_IN6ADDRSZ; + colonp = NULL; + /* Leading :: requires some special handling. */ + if (*src == ':') + if (*++src != ':') + goto enoent; + curtok = src; + saw_xdigit = 0; + val = 0; + digits = 0; + bits = -1; + ipv4 = 0; + while ((ch = *src++) != '\0') { + const char *pch; + + if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) + pch = strchr((xdigits = xdigits_u), ch); + if (pch != NULL) { + val <<= 4; + val |= (pch - xdigits); + if (++digits > 4) + goto enoent; + saw_xdigit = 1; + continue; + } + if (ch == ':') { + curtok = src; + if (!saw_xdigit) { + if (colonp) + goto enoent; + colonp = tp; + continue; + } else if (*src == '\0') + goto enoent; + if (tp + NS_INT16SZ > endp) + return (0); + *tp++ = (unsigned char)((val >> 8) & 0xff); + *tp++ = (unsigned char)(val & 0xff); + saw_xdigit = 0; + digits = 0; + val = 0; + continue; + } + if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && + getv4(curtok, tp, &bits) > 0) { + tp += NS_INADDRSZ; + saw_xdigit = 0; + ipv4 = 1; + break; /* '\0' was seen by inet_pton4(). */ + } + if (ch == '/' && getbits(src, &bits) > 0) + break; + goto enoent; + } + if (saw_xdigit) { + if (tp + NS_INT16SZ > endp) + goto enoent; + *tp++ = (unsigned char)((val >> 8) & 0xff); + *tp++ = (unsigned char)(val & 0xff); + } + if (bits == -1) + bits = 128; + + words = (bits + 15) / 16; + if (words < 2) + words = 2; + if (ipv4) + words = 8; + endp = tmp + 2 * words; + + if (colonp != NULL) { + /* + * Since some memmove()'s erroneously fail to handle + * overlapping regions, we'll do the shift by hand. + */ + const int n = (int)(tp - colonp); + int i; + + if (tp == endp) + goto enoent; + for (i = 1; i <= n; i++) { + endp[- i] = colonp[n - i]; + colonp[n - i] = 0; + } + tp = endp; + } + if (tp != endp) + goto enoent; + + bytes = (bits + 7) / 8; + if (bytes > size) + goto emsgsize; + memcpy(dst, tmp, bytes); + return (bits); + + enoent: + SET_ERRNO(ENOENT); + return (-1); + + emsgsize: + SET_ERRNO(EMSGSIZE); + return (-1); +} + +/* + * int + * inet_net_pton(af, src, dst, size) + * convert network number from presentation to network format. + * accepts hex octets, hex strings, decimal octets, and /CIDR. + * "size" is in bytes and describes "dst". + * return: + * number of bits, either imputed classfully or specified with /CIDR, + * or -1 if some failure occurred (check errno). ENOENT means it was + * not a valid network specification. + * note: + * On Windows we store the error in the thread errno, not + * in the winsock error code. This is to avoid loosing the + * actual last winsock error. So use macro ERRNO to fetch the + * errno this funtion sets when returning (-1), not SOCKERRNO. + * author: + * Paul Vixie (ISC), June 1996 + */ +int +ares_inet_net_pton(int af, const char *src, void *dst, size_t size) +{ + switch (af) { + case AF_INET: + return (inet_net_pton_ipv4(src, dst, size)); + case AF_INET6: + return (inet_net_pton_ipv6(src, dst, size)); + default: + SET_ERRNO(EAFNOSUPPORT); + return (-1); + } +} + +#endif + +#ifndef HAVE_INET_PTON +int ares_inet_pton(int af, const char *src, void *dst) +{ + int result; + size_t size; + + if (af == AF_INET) + size = sizeof(struct in_addr); + else if (af == AF_INET6) + size = sizeof(struct in6_addr); + else + { + SET_ERRNO(EAFNOSUPPORT); + return -1; + } + result = ares_inet_net_pton(af, src, dst, size); + if (result == -1 && ERRNO == ENOENT) + return 0; + return (result > -1 ? 1 : -1); +} +#endif diff --git a/3rdParty/CAres/src/inet_net_pton.h b/3rdParty/CAres/src/inet_net_pton.h new file mode 100644 index 0000000..eb38afa --- /dev/null +++ b/3rdParty/CAres/src/inet_net_pton.h @@ -0,0 +1,32 @@ +#ifndef __ARES_INET_NET_PTON_H +#define __ARES_INET_NET_PTON_H + +/* $Id: inet_net_pton.h,v 1.6 2008-09-24 19:13:02 yangtse Exp $ */ + +/* Copyright (C) 2005 by Daniel Stenberg + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifdef HAVE_INET_PTON +#define ares_inet_pton(x,y,z) inet_pton(x,y,z) +#else +int ares_inet_pton(int af, const char *src, void *dst); +#endif +#if defined(HAVE_INET_NET_PTON) && defined(HAVE_INET_NET_PTON_IPV6) +#define ares_inet_net_pton(w,x,y,z) inet_net_pton(w,x,y,z) +#else +int ares_inet_net_pton(int af, const char *src, void *dst, size_t size); +#endif + +#endif /* __ARES_INET_NET_PTON_H */ diff --git a/3rdParty/CAres/src/inet_ntop.c b/3rdParty/CAres/src/inet_ntop.c new file mode 100644 index 0000000..5b0d097 --- /dev/null +++ b/3rdParty/CAres/src/inet_ntop.c @@ -0,0 +1,232 @@ +/* $Id: inet_ntop.c,v 1.12 2009-11-02 11:55:54 yangtse Exp $ */ + +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include "ares_setup.h" + +#ifdef HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#endif +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif +#ifdef HAVE_ARPA_NAMESER_H +# include <arpa/nameser.h> +#else +# include "nameser.h" +#endif +#ifdef HAVE_ARPA_NAMESER_COMPAT_H +# include <arpa/nameser_compat.h> +#endif + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include "ares_ipv6.h" +#include "inet_ntop.h" + + +#ifndef HAVE_INET_NTOP + +#ifdef SPRINTF_CHAR +# define SPRINTF(x) strlen(sprintf/**/x) +#else +# define SPRINTF(x) ((size_t)sprintf x) +#endif + +/* + * WARNING: Don't even consider trying to compile this on a system where + * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. + */ + +static const char *inet_ntop4(const unsigned char *src, char *dst, size_t size); +static const char *inet_ntop6(const unsigned char *src, char *dst, size_t size); + +/* char * + * inet_ntop(af, src, dst, size) + * convert a network format address to presentation format. + * return: + * pointer to presentation format address (`dst'), or NULL (see errno). + * note: + * On Windows we store the error in the thread errno, not + * in the winsock error code. This is to avoid loosing the + * actual last winsock error. So use macro ERRNO to fetch the + * errno this funtion sets when returning NULL, not SOCKERRNO. + * author: + * Paul Vixie, 1996. + */ +const char * +ares_inet_ntop(int af, const void *src, char *dst, size_t size) +{ + switch (af) + { + case AF_INET: + return (inet_ntop4(src, dst, size)); + case AF_INET6: + return (inet_ntop6(src, dst, size)); + default: + SET_ERRNO(EAFNOSUPPORT); + return (NULL); + } + /* NOTREACHED */ +} + +/* const char * + * inet_ntop4(src, dst, size) + * format an IPv4 address, more or less like inet_ntoa() + * return: + * `dst' (as a const) + * notes: + * (1) uses no statics + * (2) takes a unsigned char* not an in_addr as input + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop4(const unsigned char *src, char *dst, size_t size) +{ + static const char fmt[] = "%u.%u.%u.%u"; + char tmp[sizeof "255.255.255.255"]; + + if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size) + { + SET_ERRNO(ENOSPC); + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} + +/* const char * + * inet_ntop6(src, dst, size) + * convert IPv6 binary address into presentation (printable) format + * author: + * Paul Vixie, 1996. + */ +static const char * +inet_ntop6(const unsigned char *src, char *dst, size_t size) +{ + /* + * Note that int32_t and int16_t need only be "at least" large enough + * to contain a value of the specified size. On some systems, like + * Crays, there is no such thing as an integer variable with 16 bits. + * Keep this in mind if you think this function should have been coded + * to use pointer overlays. All the world's not a VAX. + */ + char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")]; + char *tp; + struct { + long base; + long len; + } best, cur; + unsigned long words[NS_IN6ADDRSZ / NS_INT16SZ]; + int i; + + /* + * Preprocess: + * Copy the input (bytewise) array into a wordwise array. + * Find the longest run of 0x00's in src[] for :: shorthanding. + */ + memset(words, '\0', sizeof(words)); + for (i = 0; i < NS_IN6ADDRSZ; i++) + words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3)); + + best.base = -1; + cur.base = -1; + best.len = 0; + cur.len = 0; + + for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) + { + if (words[i] == 0) + { + if (cur.base == -1) + cur.base = i, cur.len = 1; + else + cur.len++; + } + else + { + if (cur.base != -1) + { + if (best.base == -1 || cur.len > best.len) + best = cur; + cur.base = -1; + } + } + } + if (cur.base != -1) + { + if (best.base == -1 || cur.len > best.len) + best = cur; + } + if (best.base != -1 && best.len < 2) + best.base = -1; + + /* + * Format the result. + */ + tp = tmp; + for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) + { + /* Are we inside the best run of 0x00's? */ + if (best.base != -1 && i >= best.base && + i < (best.base + best.len)) + { + if (i == best.base) + *tp++ = ':'; + continue; + } + /* Are we following an initial run of 0x00s or any real hex? */ + if (i != 0) + *tp++ = ':'; + /* Is this address an encapsulated IPv4? */ + if (i == 6 && best.base == 0 && + (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) + { + if (!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp))) + return (NULL); + tp += strlen(tp); + break; + } + tp += SPRINTF((tp, "%lx", words[i])); + } + + /* Was it a trailing run of 0x00's? */ + if (best.base != -1 && (best.base + best.len) == (NS_IN6ADDRSZ / NS_INT16SZ)) + *tp++ = ':'; + *tp++ = '\0'; + + /* + * Check for overflow, copy, and we're done. + */ + if ((size_t)(tp - tmp) > size) + { + SET_ERRNO(ENOSPC); + return (NULL); + } + strcpy(dst, tmp); + return (dst); +} +#endif + diff --git a/3rdParty/CAres/src/inet_ntop.h b/3rdParty/CAres/src/inet_ntop.h new file mode 100644 index 0000000..923689e --- /dev/null +++ b/3rdParty/CAres/src/inet_ntop.h @@ -0,0 +1,27 @@ +#ifndef __ARES_INET_NTOP_H +#define __ARES_INET_NTOP_H + +/* $Id: inet_ntop.h,v 1.4 2008-09-24 16:43:12 yangtse Exp $ */ + +/* Copyright (C) 2005 by Dominick Meglio + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +#ifdef HAVE_INET_NTOP +#define ares_inet_ntop(w,x,y,z) inet_ntop(w,x,y,z) +#else +const char *ares_inet_ntop(int af, const void *src, char *dst, size_t size); +#endif + +#endif /* __ARES_INET_NTOP_H */ diff --git a/3rdParty/CAres/src/nameser.h b/3rdParty/CAres/src/nameser.h new file mode 100644 index 0000000..db324c0 --- /dev/null +++ b/3rdParty/CAres/src/nameser.h @@ -0,0 +1,194 @@ +/* $Id: nameser.h,v 1.29 2008-09-17 01:02:57 yangtse Exp $ */ + +#ifndef ARES_NAMESER_H +#define ARES_NAMESER_H + +/* header file provided by liren@vivisimo.com */ + +#ifndef HAVE_ARPA_NAMESER_H + +#define NS_PACKETSZ 512 /* maximum packet size */ +#define NS_MAXDNAME 256 /* maximum domain name */ +#define NS_MAXCDNAME 255 /* maximum compressed domain name */ +#define NS_MAXLABEL 63 +#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */ +#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */ +#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */ +#define NS_INT16SZ 2 +#define NS_INADDRSZ 4 +#define NS_IN6ADDRSZ 16 +#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */ +#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */ + +typedef enum __ns_class { + ns_c_invalid = 0, /* Cookie. */ + ns_c_in = 1, /* Internet. */ + ns_c_2 = 2, /* unallocated/unsupported. */ + ns_c_chaos = 3, /* MIT Chaos-net. */ + ns_c_hs = 4, /* MIT Hesiod. */ + /* Query class values which do not appear in resource records */ + ns_c_none = 254, /* for prereq. sections in update requests */ + ns_c_any = 255, /* Wildcard match. */ + ns_c_max = 65536 +} ns_class; + +typedef enum __ns_type { + ns_t_invalid = 0, /* Cookie. */ + ns_t_a = 1, /* Host address. */ + ns_t_ns = 2, /* Authoritative server. */ + ns_t_md = 3, /* Mail destination. */ + ns_t_mf = 4, /* Mail forwarder. */ + ns_t_cname = 5, /* Canonical name. */ + ns_t_soa = 6, /* Start of authority zone. */ + ns_t_mb = 7, /* Mailbox domain name. */ + ns_t_mg = 8, /* Mail group member. */ + ns_t_mr = 9, /* Mail rename name. */ + ns_t_null = 10, /* Null resource record. */ + ns_t_wks = 11, /* Well known service. */ + ns_t_ptr = 12, /* Domain name pointer. */ + ns_t_hinfo = 13, /* Host information. */ + ns_t_minfo = 14, /* Mailbox information. */ + ns_t_mx = 15, /* Mail routing information. */ + ns_t_txt = 16, /* Text strings. */ + ns_t_rp = 17, /* Responsible person. */ + ns_t_afsdb = 18, /* AFS cell database. */ + ns_t_x25 = 19, /* X_25 calling address. */ + ns_t_isdn = 20, /* ISDN calling address. */ + ns_t_rt = 21, /* Router. */ + ns_t_nsap = 22, /* NSAP address. */ + ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */ + ns_t_sig = 24, /* Security signature. */ + ns_t_key = 25, /* Security key. */ + ns_t_px = 26, /* X.400 mail mapping. */ + ns_t_gpos = 27, /* Geographical position (withdrawn). */ + ns_t_aaaa = 28, /* Ip6 Address. */ + ns_t_loc = 29, /* Location Information. */ + ns_t_nxt = 30, /* Next domain (security). */ + ns_t_eid = 31, /* Endpoint identifier. */ + ns_t_nimloc = 32, /* Nimrod Locator. */ + ns_t_srv = 33, /* Server Selection. */ + ns_t_atma = 34, /* ATM Address */ + ns_t_naptr = 35, /* Naming Authority PoinTeR */ + ns_t_kx = 36, /* Key Exchange */ + ns_t_cert = 37, /* Certification record */ + ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */ + ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */ + ns_t_sink = 40, /* Kitchen sink (experimentatl) */ + ns_t_opt = 41, /* EDNS0 option (meta-RR) */ + ns_t_apl = 42, /* Address prefix list (RFC3123) */ + ns_t_tkey = 249, /* Transaction key */ + ns_t_tsig = 250, /* Transaction signature. */ + ns_t_ixfr = 251, /* Incremental zone transfer. */ + ns_t_axfr = 252, /* Transfer zone of authority. */ + ns_t_mailb = 253, /* Transfer mailbox records. */ + ns_t_maila = 254, /* Transfer mail agent records. */ + ns_t_any = 255, /* Wildcard match. */ + ns_t_zxfr = 256, /* BIND-specific, nonstandard. */ + ns_t_max = 65536 +} ns_type; + +typedef enum __ns_opcode { + ns_o_query = 0, /* Standard query. */ + ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */ + ns_o_status = 2, /* Name server status query (unsupported). */ + /* Opcode 3 is undefined/reserved. */ + ns_o_notify = 4, /* Zone change notification. */ + ns_o_update = 5, /* Zone update message. */ + ns_o_max = 6 +} ns_opcode; + +typedef enum __ns_rcode { + ns_r_noerror = 0, /* No error occurred. */ + ns_r_formerr = 1, /* Format error. */ + ns_r_servfail = 2, /* Server failure. */ + ns_r_nxdomain = 3, /* Name error. */ + ns_r_notimpl = 4, /* Unimplemented. */ + ns_r_refused = 5, /* Operation refused. */ + /* these are for BIND_UPDATE */ + ns_r_yxdomain = 6, /* Name exists */ + ns_r_yxrrset = 7, /* RRset exists */ + ns_r_nxrrset = 8, /* RRset does not exist */ + ns_r_notauth = 9, /* Not authoritative for zone */ + ns_r_notzone = 10, /* Zone of record different from zone section */ + ns_r_max = 11, + /* The following are TSIG extended errors */ + ns_r_badsig = 16, + ns_r_badkey = 17, + ns_r_badtime = 18 +} ns_rcode; + +#endif /* HAVE_ARPA_NAMESER_H */ + +#ifndef HAVE_ARPA_NAMESER_COMPAT_H + +#define PACKETSZ NS_PACKETSZ +#define MAXDNAME NS_MAXDNAME +#define MAXCDNAME NS_MAXCDNAME +#define MAXLABEL NS_MAXLABEL +#define HFIXEDSZ NS_HFIXEDSZ +#define QFIXEDSZ NS_QFIXEDSZ +#define RRFIXEDSZ NS_RRFIXEDSZ +#define INDIR_MASK NS_CMPRSFLGS +#define NAMESERVER_PORT NS_DEFAULTPORT + +#define QUERY ns_o_query + +#define SERVFAIL ns_r_servfail +#define NOTIMP ns_r_notimpl +#define REFUSED ns_r_refused +#undef NOERROR /* it seems this is already defined in winerror.h */ +#define NOERROR ns_r_noerror +#define FORMERR ns_r_formerr +#define NXDOMAIN ns_r_nxdomain + +#define C_IN ns_c_in +#define C_CHAOS ns_c_chaos +#define C_HS ns_c_hs +#define C_NONE ns_c_none +#define C_ANY ns_c_any + +#define T_A ns_t_a +#define T_NS ns_t_ns +#define T_MD ns_t_md +#define T_MF ns_t_mf +#define T_CNAME ns_t_cname +#define T_SOA ns_t_soa +#define T_MB ns_t_mb +#define T_MG ns_t_mg +#define T_MR ns_t_mr +#define T_NULL ns_t_null +#define T_WKS ns_t_wks +#define T_PTR ns_t_ptr +#define T_HINFO ns_t_hinfo +#define T_MINFO ns_t_minfo +#define T_MX ns_t_mx +#define T_TXT ns_t_txt +#define T_RP ns_t_rp +#define T_AFSDB ns_t_afsdb +#define T_X25 ns_t_x25 +#define T_ISDN ns_t_isdn +#define T_RT ns_t_rt +#define T_NSAP ns_t_nsap +#define T_NSAP_PTR ns_t_nsap_ptr +#define T_SIG ns_t_sig +#define T_KEY ns_t_key +#define T_PX ns_t_px +#define T_GPOS ns_t_gpos +#define T_AAAA ns_t_aaaa +#define T_LOC ns_t_loc +#define T_NXT ns_t_nxt +#define T_EID ns_t_eid +#define T_NIMLOC ns_t_nimloc +#define T_SRV ns_t_srv +#define T_ATMA ns_t_atma +#define T_NAPTR ns_t_naptr +#define T_TSIG ns_t_tsig +#define T_IXFR ns_t_ixfr +#define T_AXFR ns_t_axfr +#define T_MAILB ns_t_mailb +#define T_MAILA ns_t_maila +#define T_ANY ns_t_any + +#endif /* HAVE_ARPA_NAMESER_COMPAT_H */ + +#endif /* ARES_NAMESER_H */ diff --git a/3rdParty/CAres/src/setup_once.h b/3rdParty/CAres/src/setup_once.h new file mode 100644 index 0000000..9d93ebc --- /dev/null +++ b/3rdParty/CAres/src/setup_once.h @@ -0,0 +1,444 @@ +#ifndef __SETUP_ONCE_H +#define __SETUP_ONCE_H + +/* $Id: setup_once.h,v 1.36 2009-06-19 00:41:03 yangtse Exp $ */ + +/* Copyright (C) 2004 - 2009 by Daniel Stenberg et al + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. M.I.T. makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + + +/******************************************************************** + * NOTICE * + * ======== * + * * + * Content of header files lib/setup_once.h and ares/setup_once.h * + * must be kept in sync. Modify the other one if you change this. * + * * + ********************************************************************/ + + +/* + * Inclusion of common header files. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> +#include <ctype.h> +#include <errno.h> + +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif + +#ifdef NEED_MALLOC_H +#include <malloc.h> +#endif + +#ifdef NEED_MEMORY_H +#include <memory.h> +#endif + +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif + +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#ifdef TIME_WITH_SYS_TIME +#include <time.h> +#endif +#else +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#endif + +#ifdef WIN32 +#include <io.h> +#include <fcntl.h> +#endif + +#ifdef HAVE_STDBOOL_H +#include <stdbool.h> +#endif + + +/* + * Definition of timeval struct for platforms that don't have it. + */ + +#ifndef HAVE_STRUCT_TIMEVAL +struct timeval { + long tv_sec; + long tv_usec; +}; +#endif + + +/* + * If we have the MSG_NOSIGNAL define, make sure we use + * it as the fourth argument of function send() + */ + +#ifdef HAVE_MSG_NOSIGNAL +#define SEND_4TH_ARG MSG_NOSIGNAL +#else +#define SEND_4TH_ARG 0 +#endif + + +#if defined(__minix) +/* Minix doesn't support recv on TCP sockets */ +#define sread(x,y,z) (ssize_t)read((RECV_TYPE_ARG1)(x), \ + (RECV_TYPE_ARG2)(y), \ + (RECV_TYPE_ARG3)(z)) + +#elif defined(HAVE_RECV) +/* + * The definitions for the return type and arguments types + * of functions recv() and send() belong and come from the + * configuration file. Do not define them in any other place. + * + * HAVE_RECV is defined if you have a function named recv() + * which is used to read incoming data from sockets. If your + * function has another name then don't define HAVE_RECV. + * + * If HAVE_RECV is defined then RECV_TYPE_ARG1, RECV_TYPE_ARG2, + * RECV_TYPE_ARG3, RECV_TYPE_ARG4 and RECV_TYPE_RETV must also + * be defined. + * + * HAVE_SEND is defined if you have a function named send() + * which is used to write outgoing data on a connected socket. + * If yours has another name then don't define HAVE_SEND. + * + * If HAVE_SEND is defined then SEND_TYPE_ARG1, SEND_QUAL_ARG2, + * SEND_TYPE_ARG2, SEND_TYPE_ARG3, SEND_TYPE_ARG4 and + * SEND_TYPE_RETV must also be defined. + */ + +#if !defined(RECV_TYPE_ARG1) || \ + !defined(RECV_TYPE_ARG2) || \ + !defined(RECV_TYPE_ARG3) || \ + !defined(RECV_TYPE_ARG4) || \ + !defined(RECV_TYPE_RETV) + /* */ + Error Missing_definition_of_return_and_arguments_types_of_recv + /* */ +#else +#define sread(x,y,z) (ssize_t)recv((RECV_TYPE_ARG1)(x), \ + (RECV_TYPE_ARG2)(y), \ + (RECV_TYPE_ARG3)(z), \ + (RECV_TYPE_ARG4)(0)) +#endif +#else /* HAVE_RECV */ +#ifndef sread + /* */ + Error Missing_definition_of_macro_sread + /* */ +#endif +#endif /* HAVE_RECV */ + + +#if defined(__minix) +/* Minix doesn't support send on TCP sockets */ +#define swrite(x,y,z) (ssize_t)write((SEND_TYPE_ARG1)(x), \ + (SEND_TYPE_ARG2)(y), \ + (SEND_TYPE_ARG3)(z)) + +#elif defined(HAVE_SEND) +#if !defined(SEND_TYPE_ARG1) || \ + !defined(SEND_QUAL_ARG2) || \ + !defined(SEND_TYPE_ARG2) || \ + !defined(SEND_TYPE_ARG3) || \ + !defined(SEND_TYPE_ARG4) || \ + !defined(SEND_TYPE_RETV) + /* */ + Error Missing_definition_of_return_and_arguments_types_of_send + /* */ +#else +#define swrite(x,y,z) (ssize_t)send((SEND_TYPE_ARG1)(x), \ + (SEND_TYPE_ARG2)(y), \ + (SEND_TYPE_ARG3)(z), \ + (SEND_TYPE_ARG4)(SEND_4TH_ARG)) +#endif +#else /* HAVE_SEND */ +#ifndef swrite + /* */ + Error Missing_definition_of_macro_swrite + /* */ +#endif +#endif /* HAVE_SEND */ + + +#if 0 +#if defined(HAVE_RECVFROM) +/* + * Currently recvfrom is only used on udp sockets. + */ +#if !defined(RECVFROM_TYPE_ARG1) || \ + !defined(RECVFROM_TYPE_ARG2) || \ + !defined(RECVFROM_TYPE_ARG3) || \ + !defined(RECVFROM_TYPE_ARG4) || \ + !defined(RECVFROM_TYPE_ARG5) || \ + !defined(RECVFROM_TYPE_ARG6) || \ + !defined(RECVFROM_TYPE_RETV) + /* */ + Error Missing_definition_of_return_and_arguments_types_of_recvfrom + /* */ +#else +#define sreadfrom(s,b,bl,f,fl) (ssize_t)recvfrom((RECVFROM_TYPE_ARG1) (s), \ + (RECVFROM_TYPE_ARG2 *)(b), \ + (RECVFROM_TYPE_ARG3) (bl), \ + (RECVFROM_TYPE_ARG4) (0), \ + (RECVFROM_TYPE_ARG5 *)(f), \ + (RECVFROM_TYPE_ARG6 *)(fl)) +#endif +#else /* HAVE_RECVFROM */ +#ifndef sreadfrom + /* */ + Error Missing_definition_of_macro_sreadfrom + /* */ +#endif +#endif /* HAVE_RECVFROM */ + + +#ifdef RECVFROM_TYPE_ARG6_IS_VOID +# define RECVFROM_ARG6_T int +#else +# define RECVFROM_ARG6_T RECVFROM_TYPE_ARG6 +#endif +#endif /* if 0 */ + + +/* + * Function-like macro definition used to close a socket. + */ + +#if defined(HAVE_CLOSESOCKET) +# define sclose(x) closesocket((x)) +#elif defined(HAVE_CLOSESOCKET_CAMEL) +# define sclose(x) CloseSocket((x)) +#else +# define sclose(x) close((x)) +#endif + + +/* + * Uppercase macro versions of ANSI/ISO is*() functions/macros which + * avoid negative number inputs with argument byte codes > 127. + */ + +#define ISSPACE(x) (isspace((int) ((unsigned char)x))) +#define ISDIGIT(x) (isdigit((int) ((unsigned char)x))) +#define ISALNUM(x) (isalnum((int) ((unsigned char)x))) +#define ISXDIGIT(x) (isxdigit((int) ((unsigned char)x))) +#define ISGRAPH(x) (isgraph((int) ((unsigned char)x))) +#define ISALPHA(x) (isalpha((int) ((unsigned char)x))) +#define ISPRINT(x) (isprint((int) ((unsigned char)x))) +#define ISUPPER(x) (isupper((int) ((unsigned char)x))) +#define ISLOWER(x) (islower((int) ((unsigned char)x))) + +#define ISBLANK(x) (int)((((unsigned char)x) == ' ') || \ + (((unsigned char)x) == '\t')) + + +/* + * Typedef to 'unsigned char' if bool is not an available 'typedefed' type. + */ + +#ifndef HAVE_BOOL_T +typedef unsigned char bool; +#define HAVE_BOOL_T +#endif + + +/* + * Default definition of uppercase TRUE and FALSE. + */ + +#ifndef TRUE +#define TRUE 1 +#endif +#ifndef FALSE +#define FALSE 0 +#endif + + +/* + * Typedef to 'int' if sig_atomic_t is not an available 'typedefed' type. + */ + +#ifndef HAVE_SIG_ATOMIC_T +typedef int sig_atomic_t; +#define HAVE_SIG_ATOMIC_T +#endif + + +/* + * Convenience SIG_ATOMIC_T definition + */ + +#ifdef HAVE_SIG_ATOMIC_T_VOLATILE +#define SIG_ATOMIC_T static sig_atomic_t +#else +#define SIG_ATOMIC_T static volatile sig_atomic_t +#endif + + +/* + * Default return type for signal handlers. + */ + +#ifndef RETSIGTYPE +#define RETSIGTYPE void +#endif + + +/* + * Macro used to include code only in debug builds. + */ + +#ifdef DEBUGBUILD +#define DEBUGF(x) x +#else +#define DEBUGF(x) do { } while (0) +#endif + + +/* + * Macro used to include assertion code only in debug builds. + */ + +#if defined(DEBUGBUILD) && defined(HAVE_ASSERT_H) +#define DEBUGASSERT(x) assert(x) +#else +#define DEBUGASSERT(x) do { } while (0) +#endif + + +/* + * Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno + * (or equivalent) on this platform to hide platform details to code using it. + */ + +#ifdef USE_WINSOCK +#define SOCKERRNO ((int)WSAGetLastError()) +#define SET_SOCKERRNO(x) (WSASetLastError((int)(x))) +#else +#define SOCKERRNO (errno) +#define SET_SOCKERRNO(x) (errno = (x)) +#endif + + +/* + * Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno + * (or equivalent) on this platform to hide platform details to code using it. + */ + +#ifdef WIN32 +#define ERRNO ((int)GetLastError()) +#define SET_ERRNO(x) (SetLastError((DWORD)(x))) +#else +#define ERRNO (errno) +#define SET_ERRNO(x) (errno = (x)) +#endif + + +/* + * Portable error number symbolic names defined to Winsock error codes. + */ + +#ifdef USE_WINSOCK +#undef EBADF /* override definition in errno.h */ +#define EBADF WSAEBADF +#undef EINTR /* override definition in errno.h */ +#define EINTR WSAEINTR +#undef EINVAL /* override definition in errno.h */ +#define EINVAL WSAEINVAL +#define EWOULDBLOCK WSAEWOULDBLOCK +#define EINPROGRESS WSAEINPROGRESS +#define EALREADY WSAEALREADY +#define ENOTSOCK WSAENOTSOCK +#define EDESTADDRREQ WSAEDESTADDRREQ +#define EMSGSIZE WSAEMSGSIZE +#define EPROTOTYPE WSAEPROTOTYPE +#define ENOPROTOOPT WSAENOPROTOOPT +#define EPROTONOSUPPORT WSAEPROTONOSUPPORT +#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT +#define EOPNOTSUPP WSAEOPNOTSUPP +#define EPFNOSUPPORT WSAEPFNOSUPPORT +#define EAFNOSUPPORT WSAEAFNOSUPPORT +#define EADDRINUSE WSAEADDRINUSE +#define EADDRNOTAVAIL WSAEADDRNOTAVAIL +#define ENETDOWN WSAENETDOWN +#define ENETUNREACH WSAENETUNREACH +#define ENETRESET WSAENETRESET +#define ECONNABORTED WSAECONNABORTED +#define ECONNRESET WSAECONNRESET +#define ENOBUFS WSAENOBUFS +#define EISCONN WSAEISCONN +#define ENOTCONN WSAENOTCONN +#define ESHUTDOWN WSAESHUTDOWN +#define ETOOMANYREFS WSAETOOMANYREFS +#define ETIMEDOUT WSAETIMEDOUT +#define ECONNREFUSED WSAECONNREFUSED +#define ELOOP WSAELOOP +#ifndef ENAMETOOLONG /* possible previous definition in errno.h */ +#define ENAMETOOLONG WSAENAMETOOLONG +#endif +#define EHOSTDOWN WSAEHOSTDOWN +#define EHOSTUNREACH WSAEHOSTUNREACH +#ifndef ENOTEMPTY /* possible previous definition in errno.h */ +#define ENOTEMPTY WSAENOTEMPTY +#endif +#define EPROCLIM WSAEPROCLIM +#define EUSERS WSAEUSERS +#define EDQUOT WSAEDQUOT +#define ESTALE WSAESTALE +#define EREMOTE WSAEREMOTE +#endif + + +/* + * Actually use __32_getpwuid() on 64-bit VMS builds for getpwuid() + */ + +#if defined(VMS) && \ + defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64) +#define getpwuid __32_getpwuid +#endif + + +/* + * Macro argv_item_t hides platform details to code using it. + */ + +#ifdef VMS +#define argv_item_t __char_ptr32 +#else +#define argv_item_t char * +#endif + + +/* + * We use this ZERO_NULL to avoid picky compiler warnings, + * when assigning a NULL pointer to a function pointer var. + */ + +#define ZERO_NULL 0 + + +#endif /* __SETUP_ONCE_H */ + diff --git a/3rdParty/CAres/src/windows_port.c b/3rdParty/CAres/src/windows_port.c new file mode 100644 index 0000000..ce129ae --- /dev/null +++ b/3rdParty/CAres/src/windows_port.c @@ -0,0 +1,23 @@ +#include "ares_setup.h" + +/* $Id: windows_port.c,v 1.22 2009-11-02 11:55:54 yangtse Exp $ */ + +/* only do the following on windows + */ +#if (defined(WIN32) || defined(WATT32)) && !defined(MSDOS) + +#ifdef __WATCOMC__ +/* + * Watcom needs a DllMain() in order to initialise the clib startup code. + */ +BOOL +WINAPI DllMain (HINSTANCE hnd, DWORD reason, LPVOID reserved) +{ + (void) hnd; + (void) reason; + (void) reserved; + return (TRUE); +} +#endif + +#endif /* WIN32 builds only */ |