2 * C Implementation: tunnel
7 * Author: Simon Morlat <simon.morlat@linphone.org>, (C) 2009
9 * Copyright (C) 2010 Belledonne Comunications, Grenoble, France
14 #include "TunnelManager.hh"
16 #include "ortp/rtpsession.h"
17 #include "linphonecore.h"
18 #include "linphonecore_utils.h"
19 #include "eXosip2/eXosip_transport_hook.h"
20 #include "tunnel/udp_mirror.hh"
23 #include <android/log.h>
27 using namespace belledonnecomm;
28 using namespace ::std;
30 Mutex TunnelManager::sMutex;
32 int TunnelManager::eXosipSendto(int fd,const void *buf, size_t len, int flags, const struct sockaddr *to, socklen_t tolen,void* userdata){
33 TunnelManager* lTunnelMgr=(TunnelManager*)userdata;
36 if (lTunnelMgr->mSipSocket==NULL){
40 lTunnelMgr->mSipSocket->sendto(buf,len,to,tolen);
42 //ignore the error in all cases, retransmissions might be successful.
46 int TunnelManager::eXosipRecvfrom(int fd, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen,void* userdata){
47 TunnelManager* lTunnelMgr=(TunnelManager*)userdata;
50 if (lTunnelMgr->mSipSocket==NULL){
52 return 0;//let ignore the error
54 err=lTunnelMgr->mSipSocket->recvfrom(buf,len,from,*fromlen);
59 int TunnelManager::eXosipSelect(int max_fds, fd_set *s1, fd_set *s2, fd_set *s3, struct timeval *tv,void* userdata){
60 struct timeval begin,cur;
61 TunnelManager* lTunnelMgr=(TunnelManager*)userdata;
62 if (s1 && tv!=0 && tv->tv_sec){
63 /*this is the select from udp.c, the one that is interesting to us*/
64 NativeSocket udp_fd=(NativeSocket)eXosip_get_udp_socket();
65 NativeSocket controlfd=(NativeSocket)eXosip_get_control_fd();
68 gettimeofday(&begin,NULL);
75 if (lTunnelMgr->mSipSocket!=NULL){
76 if (lTunnelMgr->mSipSocket->hasData()) {
78 /* we make exosip believe that it has udp data to read*/
84 gettimeofday(&cur,NULL);
85 if (cur.tv_sec-begin.tv_sec>tv->tv_sec) {
92 if (select(max_fds,s1,s2,s3,&abit)==1) {
98 /*select called from other places, only the control fd is present */
99 return select(max_fds,s1,s2,s3,tv);
104 void TunnelManager::addServer(const char *ip, int port,unsigned int udpMirrorPort,unsigned int delay) {
106 mUdpMirrorClients.push_back(UdpMirrorClient(ServerAddr(ip,udpMirrorPort),delay));
109 void TunnelManager::addServer(const char *ip, int port) {
110 mServerAddrs.push_back(ServerAddr(ip,port));
111 if (mTunnelClient) mTunnelClient->addServer(ip,port);
114 void TunnelManager::cleanServers() {
115 mServerAddrs.clear();
117 UdpMirrorClientList::iterator it;
118 mAutoDetectStarted=false;
119 for (it = mUdpMirrorClients.begin(); it != mUdpMirrorClients.end();) {
120 UdpMirrorClient& s=*it++;
123 mUdpMirrorClients.clear();
124 if (mTunnelClient) mTunnelClient->cleanServers();
127 void TunnelManager::reconnect(){
129 mTunnelClient->reconnect();
132 void TunnelManager::setCallback(StateCallback cb, void *userdata) {
134 mCallbackData=userdata;
137 static void sCloseRtpTransport(RtpTransport *t, void *userData){
138 TunnelSocket *s=(TunnelSocket*)userData;
139 TunnelManager *manager=(TunnelManager*)s->getUserPointer();
140 manager->closeRtpTransport(t, s);
142 void TunnelManager::closeRtpTransport(RtpTransport *t, TunnelSocket *s){
143 mTunnelClient->closeSocket(s);
147 static RtpTransport *sCreateRtpTransport(void* userData, int port){
148 return ((TunnelManager *) userData)->createRtpTransport(port);
151 RtpTransport *TunnelManager::createRtpTransport(int port){
152 TunnelSocket *socket=mTunnelClient->createSocket(port);
153 socket->setUserPointer(this);
154 RtpTransport *t=ms_new0(RtpTransport,1);
156 t->t_recvfrom=customRecvfrom;
157 t->t_sendto=customSendto;
158 t->t_close=sCloseRtpTransport;
163 void TunnelManager::start() {
164 if (!mTunnelClient) {
165 mTunnelClient = new TunnelClient();
166 mTunnelClient->setCallback((StateCallback)tunnelCallback,this);
167 list<ServerAddr>::iterator it;
168 for(it=mServerAddrs.begin();it!=mServerAddrs.end();++it){
169 const ServerAddr &addr=*it;
170 mTunnelClient->addServer(addr.mAddr.c_str(), addr.mPort);
172 mTunnelClient->setHttpProxy(mHttpProxyHost.c_str(), mHttpProxyPort, mHttpUserName.c_str(), mHttpPasswd.c_str());
174 mTunnelClient->start();
176 if (mSipSocket == NULL) mSipSocket =mTunnelClient->createSocket(5060);
179 bool TunnelManager::isStarted() {
180 return mTunnelClient != 0 && mTunnelClient->isStarted();
183 bool TunnelManager::isReady() const {
184 return mTunnelClient && mTunnelClient->isReady();
187 int TunnelManager::customSendto(struct _RtpTransport *t, mblk_t *msg , int flags, const struct sockaddr *to, socklen_t tolen){
191 ((TunnelSocket*)t->data)->sendto(msg->b_rptr,size,to,tolen);
195 int TunnelManager::customRecvfrom(struct _RtpTransport *t, mblk_t *msg, int flags, struct sockaddr *from, socklen_t *fromlen){
196 int err=((TunnelSocket*)t->data)->recvfrom(msg->b_wptr,msg->b_datap->db_lim-msg->b_datap->db_base,from,*fromlen);
197 if (err>0) return err;
202 TunnelManager::TunnelManager(LinphoneCore* lc) :TunnelClientController()
208 ,mAutoDetectStarted(false)
211 mExosipTransport.data=this;
212 mExosipTransport.recvfrom=eXosipRecvfrom;
213 mExosipTransport.sendto=eXosipSendto;
214 mExosipTransport.select=eXosipSelect;
215 linphone_core_add_iterate_hook(mCore,(LinphoneCoreIterateHook)sOnIterate,this);
216 mTransportFactories.audio_rtcp_func=sCreateRtpTransport;
217 mTransportFactories.audio_rtcp_func_data=this;
218 mTransportFactories.audio_rtp_func=sCreateRtpTransport;
219 mTransportFactories.audio_rtp_func_data=this;
220 mTransportFactories.video_rtcp_func=sCreateRtpTransport;
221 mTransportFactories.video_rtcp_func_data=this;
222 mTransportFactories.video_rtp_func=sCreateRtpTransport;
223 mTransportFactories.video_rtp_func_data=this;
226 TunnelManager::~TunnelManager(){
230 void TunnelManager::stopClient(){
231 eXosip_transport_hook_register(NULL);
232 if (mSipSocket != NULL){
234 mTunnelClient->closeSocket(mSipSocket);
239 delete mTunnelClient;
244 void TunnelManager::processTunnelEvent(const Event &ev){
245 LinphoneProxyConfig* lProxy;
246 linphone_core_get_default_proxy(mCore, &lProxy);
248 if (mEnabled && mTunnelClient->isReady()){
249 ms_message("Tunnel is up, registering now");
250 linphone_core_set_firewall_policy(mCore,LinphonePolicyNoFirewall);
251 linphone_core_set_rtp_transport_factories(mCore,&mTransportFactories);
252 eXosip_transport_hook_register(&mExosipTransport);
253 //force transport to udp
254 LCSipTransports lTransport;
256 lTransport.udp_port=15060;
257 lTransport.tcp_port=0;
258 lTransport.tls_port=0;
259 lTransport.dtls_port=0;
261 linphone_core_set_sip_transports(mCore, &lTransport);
264 linphone_proxy_config_done(lProxy);
266 }else if (mEnabled && !mTunnelClient->isReady()){
267 /* we got disconnected from the tunnel */
268 if (lProxy && linphone_proxy_config_is_registered(lProxy)) {
269 /*forces de-registration so that we register again when the tunnel is up*/
270 linphone_proxy_config_edit(lProxy);
271 linphone_core_iterate(mCore);
276 void TunnelManager::waitUnRegistration(){
277 LinphoneProxyConfig* lProxy;
278 linphone_core_get_default_proxy(mCore, &lProxy);
279 if (lProxy && linphone_proxy_config_get_state(lProxy)==LinphoneRegistrationOk) {
281 linphone_proxy_config_edit(lProxy);
282 //make sure unregister is sent and authenticated
284 linphone_core_iterate(mCore);
287 ms_message("tunnel: timeout for unregistration expired, giving up");
291 }while(linphone_proxy_config_get_state(lProxy)!=LinphoneRegistrationCleared);
295 void TunnelManager::enable(bool isEnable) {
296 ms_message("Turning tunnel [%s]",(isEnable?"on":"off"));
297 if (isEnable && !mEnabled){
299 //1 save transport and firewall policy
300 linphone_core_get_sip_transports(mCore, &mRegularTransport);
301 mPreviousFirewallPolicy=linphone_core_get_firewall_policy(mCore);
303 waitUnRegistration();
306 }else if (!isEnable && mEnabled){
308 waitUnRegistration();
313 linphone_core_set_rtp_transport_factories(mCore,NULL);
315 eXosip_transport_hook_register(NULL);
316 //Restore transport and firewall policy
317 linphone_core_set_sip_transports(mCore, &mRegularTransport);
318 linphone_core_set_firewall_policy(mCore, mPreviousFirewallPolicy);
320 LinphoneProxyConfig* lProxy;
321 linphone_core_get_default_proxy(mCore, &lProxy);
323 linphone_proxy_config_done(lProxy);
329 void TunnelManager::tunnelCallback(bool connected, TunnelManager *zis){
331 ev.mType=TunnelEvent;
332 ev.mData.mConnected=connected;
336 void TunnelManager::onIterate(){
338 while(!mEvq.empty()){
339 Event ev=mEvq.front();
342 if (ev.mType==TunnelEvent)
343 processTunnelEvent(ev);
344 else if (ev.mType==UdpMirrorClientEvent){
345 processUdpMirrorEvent(ev);
352 /*invoked from linphone_core_iterate() */
353 void TunnelManager::sOnIterate(TunnelManager *zis){
358 static void linphone_android_log_handler(int lev, const char *fmt, va_list args){
361 case TUNNEL_DEBUG: prio = ANDROID_LOG_DEBUG; break;
362 case TUNNEL_INFO: prio = ANDROID_LOG_INFO; break;
363 case TUNNEL_NOTICE: prio = ANDROID_LOG_INFO; break;
364 case TUNNEL_WARN: prio = ANDROID_LOG_WARN; break;
365 case TUNNEL_ERROR: prio = ANDROID_LOG_ERROR; break;
366 default: prio = ANDROID_LOG_DEFAULT; break;
368 __android_log_vprint(prio, LOG_DOMAIN, fmt, args);
372 void TunnelManager::enableLogs(bool value) {
373 enableLogs(value,NULL);
376 void TunnelManager::enableLogs(bool isEnabled,LogHandler logHandler) {
377 if (logHandler != NULL) SetLogHandler(logHandler);
379 else SetLogHandler(linphone_android_log_handler);
381 else SetLogHandler(default_log_handler);
385 SetLogLevel(TUNNEL_ERROR|TUNNEL_WARN|TUNNEL_INFO);
387 SetLogLevel(TUNNEL_ERROR|TUNNEL_WARN);
392 bool TunnelManager::isEnabled() {
396 void TunnelManager::processUdpMirrorEvent(const Event &ev){
397 if (ev.mData.mHaveUdp) {
398 LOGI("Tunnel is not required, disabling");
400 mAutoDetectStarted = false;
402 if (mCurrentUdpMirrorClient !=mUdpMirrorClients.end()) {
403 // enable tunnel but also try backup server
404 LOGI("Tunnel is required, enabling; Trying backup udp mirror");
406 UdpMirrorClient &lUdpMirrorClient=*mCurrentUdpMirrorClient;
407 lUdpMirrorClient.start(TunnelManager::sUdpMirrorClientCallback,(void*)this);
409 LOGI("Tunnel is required, enabling; no backup udp mirror available");
410 mAutoDetectStarted = false;
416 void TunnelManager::postEvent(const Event &ev){
422 void TunnelManager::sUdpMirrorClientCallback(bool isUdpAvailable, void* data) {
423 TunnelManager* thiz = (TunnelManager*)data;
425 ev.mType=UdpMirrorClientEvent;
426 ev.mData.mHaveUdp=isUdpAvailable;
430 void TunnelManager::autoDetect() {
431 // first check if udp mirrors was provisionned
432 if (mUdpMirrorClients.empty()) {
433 LOGE("No UDP mirror server configured aborting auto detection");
436 if (mAutoDetectStarted) {
437 LOGE("auto detection already in progress, restarting");
438 (*mCurrentUdpMirrorClient).stop();
440 mAutoDetectStarted=true;
441 mCurrentUdpMirrorClient =mUdpMirrorClients.begin();
442 UdpMirrorClient &lUdpMirrorClient=*mCurrentUdpMirrorClient;
443 lUdpMirrorClient.start(TunnelManager::sUdpMirrorClientCallback,(void*)this);
447 void TunnelManager::setHttpProxyAuthInfo(const char* username,const char* passwd) {
448 mHttpUserName=username?username:"";
449 mHttpPasswd=passwd?passwd:"";
450 if (mTunnelClient) mTunnelClient->setHttpProxyAuthInfo(username,passwd);
453 void TunnelManager::setHttpProxy(const char *host,int port, const char *username, const char *passwd){
454 mHttpUserName=username?username:"";
455 mHttpPasswd=passwd?passwd:"";
456 mHttpProxyPort=(port>0) ? port : 0;
457 mHttpProxyHost=host ? host : "";
458 if (mTunnelClient) mTunnelClient->setHttpProxy(host, port, username, passwd);
461 LinphoneCore *TunnelManager::getLinphoneCore(){