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Diffstat (limited to '3rdParty/CAres/src/ares_query.c')
m---------3rdParty/CAres0
-rw-r--r--3rdParty/CAres/src/ares_query.c184
2 files changed, 0 insertions, 184 deletions
diff --git a/3rdParty/CAres b/3rdParty/CAres
new file mode 160000
+Subproject b4ee3a88b3d7de7a1c39d343fb354da811dba40
diff --git a/3rdParty/CAres/src/ares_query.c b/3rdParty/CAres/src/ares_query.c
deleted file mode 100644
index 7052d7a..0000000
--- a/3rdParty/CAres/src/ares_query.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/* $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);
-}