1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
#include "Swiften/LinkLocal/AppleDNSSDService.h"
#include <algorithm>
#include <unistd.h>
#include <iostream>
#include <sys/socket.h>
#include "Swiften/EventLoop/MainEventLoop.h"
#include "Swiften/LinkLocal/LinkLocalServiceInfo.h"
namespace Swift {
#if 0
namespace {
void handleServiceResolved( DNSServiceRef sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, DNSServiceErrorType errorCode, const char *fullname, const char *hosttarget, uint16_t port, uint16_t txtLen, const unsigned char *txtRecord, void *context ) {
std::cerr << "Service resolved " << fullname << " " << hosttarget << " " << port << " " << txtLen << " " << /*std::string((const char*) txtRecord, txtLen) <<*/ std::endl;
}
void handleAddressInfoReceived ( DNSServiceRef sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, DNSServiceErrorType errorCode, const char *hostname, const struct sockaddr *address, uint32_t ttl, void *context ) {
//std::cerr << "Address received " << HostAddress((const unsigned char*) address->sa_data, 4).toString() << std::endl;
}
}
/*
result = DNSServiceResolve(&resolveSDRef, 0, 6, "Remko@Micro", "_presence._tcp.", "local.", handleServiceResolved , 0);
result = DNSServiceGetAddrInfo(&addressSDRef, 0, 6, kDNSServiceProtocol_IPv4, "Micro.local.", handleAddressInfoReceived, 0);
*/
#endif
AppleDNSSDService::AppleDNSSDService() : thread(0), stopRequested(false), browseSDRef(0), registerSDRef(0) {
int fds[2];
int result = pipe(fds);
assert(result == 0);
interruptSelectReadSocket = fds[0];
interruptSelectWriteSocket = fds[1];
}
AppleDNSSDService::~AppleDNSSDService() {
stop();
}
void AppleDNSSDService::start() {
assert(!thread);
thread = new boost::thread(boost::bind(&AppleDNSSDService::doStart, shared_from_this()));
}
void AppleDNSSDService::registerService(const String& name, int port, const LinkLocalServiceInfo& info) {
boost::lock_guard<boost::mutex> lock(sdRefsMutex);
assert(!registerSDRef);
ByteArray txtRecord = info.toTXTRecord();
DNSServiceErrorType result = DNSServiceRegister(®isterSDRef, 0, 0, name.getUTF8Data(), "_presence._tcp", NULL, NULL, port, txtRecord.getSize(), txtRecord.getData(), &AppleDNSSDService::handleServiceRegisteredGlobal, this);
interruptSelect();
if (result != kDNSServiceErr_NoError) {
onError();
}
}
void AppleDNSSDService::unregisterService() {
boost::lock_guard<boost::mutex> lock(sdRefsMutex);
assert(registerSDRef);
interruptSelect();
DNSServiceRefDeallocate(registerSDRef);
registerSDRef = NULL;
}
void AppleDNSSDService::stop() {
if (thread) {
stopRequested = true;
interruptSelect();
thread->join();
delete thread;
stopRequested = false;
}
}
void AppleDNSSDService::doStart() {
// Listen for new services
assert(!browseSDRef);
DNSServiceErrorType result = DNSServiceBrowse(&browseSDRef, 0, 0, "_presence._tcp", 0, &AppleDNSSDService::handleServiceDiscoveredGlobal , this);
if (result != kDNSServiceErr_NoError) {
MainEventLoop::postEvent(boost::ref(onError), shared_from_this());
return;
}
// Run the main loop
while (!stopRequested) {
fd_set fdSet;
FD_ZERO(&fdSet);
int maxSocket = 0;
{
boost::lock_guard<boost::mutex> lock(sdRefsMutex);
// Browsing
int browseSocket = DNSServiceRefSockFD(browseSDRef);
maxSocket = browseSocket;
FD_SET(browseSocket, &fdSet);
// Registration
if (registerSDRef) {
int registerSocket = DNSServiceRefSockFD(registerSDRef);
maxSocket = std::max(maxSocket, registerSocket);
FD_SET(registerSocket, &fdSet);
}
}
int selectResult = select(maxSocket+1, &fdSet, NULL, NULL, 0);
{
boost::lock_guard<boost::mutex> lock(sdRefsMutex);
if (selectResult == -1) {
MainEventLoop::postEvent(boost::ref(onError), shared_from_this());
return;
}
if (selectResult == 0) {
continue;
}
if (FD_ISSET(DNSServiceRefSockFD(browseSDRef), &fdSet)) {
DNSServiceProcessResult(browseSDRef);
}
if (registerSDRef && FD_ISSET(DNSServiceRefSockFD(registerSDRef), &fdSet)) {
DNSServiceProcessResult(registerSDRef);
}
}
}
if (registerSDRef) {
DNSServiceRefDeallocate(registerSDRef);
registerSDRef = NULL;
}
DNSServiceRefDeallocate(browseSDRef);
browseSDRef = NULL;
}
void AppleDNSSDService::interruptSelect() {
char c = 0;
write(interruptSelectWriteSocket, &c, 1);
}
void AppleDNSSDService::handleServiceDiscoveredGlobal(DNSServiceRef sdRef, DNSServiceFlags flags, uint32_t interfaceIndex, DNSServiceErrorType errorCode, const char *serviceName, const char *regtype, const char *replyDomain, void *context ) {
static_cast<AppleDNSSDService*>(context)->handleServiceDiscovered(sdRef, flags, interfaceIndex, errorCode, serviceName, regtype, replyDomain);
}
void AppleDNSSDService::handleServiceDiscovered(DNSServiceRef, DNSServiceFlags flags, uint32_t interfaceIndex, DNSServiceErrorType errorCode, const char *serviceName, const char *regtype, const char *replyDomain) {
if (errorCode != kDNSServiceErr_NoError) {
MainEventLoop::postEvent(boost::ref(onError), shared_from_this());
}
else {
Service service(serviceName, regtype, replyDomain, interfaceIndex);
if (flags & kDNSServiceFlagsAdd) {
MainEventLoop::postEvent(boost::bind(boost::ref(onServiceAdded), service), shared_from_this());
}
else {
MainEventLoop::postEvent(boost::bind(boost::ref(onServiceRemoved), service), shared_from_this());
}
}
}
void AppleDNSSDService::handleServiceRegisteredGlobal(DNSServiceRef sdRef, DNSServiceFlags flags, DNSServiceErrorType errorCode, const char *name, const char *regtype, const char *domain, void *context) {
static_cast<AppleDNSSDService*>(context)->handleServiceRegistered(sdRef, flags, errorCode, name, regtype, domain);
}
void AppleDNSSDService::handleServiceRegistered(DNSServiceRef, DNSServiceFlags, DNSServiceErrorType errorCode, const char *name, const char *regtype, const char *domain) {
if (errorCode != kDNSServiceErr_NoError) {
MainEventLoop::postEvent(boost::ref(onError), shared_from_this());
}
else {
MainEventLoop::postEvent(boost::bind(boost::ref(onServiceRegistered), Service(name, regtype, domain, 0)), shared_from_this());
}
}
}
|
Swift