sjero.net Git - linphone/blob - coreapi/TunnelManager.cc

   1 /*
   2  *  C Implementation: tunnel
   3  *
   4  * Description:
   5  *
   6  *
   7  * Author: Simon Morlat <simon.morlat@linphone.org>, (C) 2009
   8  *
   9  * Copyright (C) 2010  Belledonne Comunications, Grenoble, France
  10  *
  11  */
  12
  13
  14 #include "TunnelManager.hh"
  15
  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"
  21
  22 #ifdef ANDROID
  23 #include <android/log.h>
  24 #endif
  25
  26
  27 using namespace belledonnecomm;
  28 using namespace ::std;
  29
  30 Mutex TunnelManager::sMutex;
  31
  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;
  34         int err;
  35         sMutex.lock();
  36         if (lTunnelMgr->mSipSocket==NULL){
  37                 sMutex.unlock();
  38                 return len;//let ignore the error
  39         }
  40         err=lTunnelMgr->mSipSocket->sendto(buf,len,to,tolen);
  41         sMutex.unlock();
  42         return err;
  43 }
  44
  45 int TunnelManager::eXosipRecvfrom(int fd, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen,void* userdata){
  46         TunnelManager* lTunnelMgr=(TunnelManager*)userdata;
  47         int err;
  48         sMutex.lock();
  49         if (lTunnelMgr->mSipSocket==NULL){
  50                 sMutex.unlock();
  51                 return 0;//let ignore the error
  52         }
  53         err=lTunnelMgr->mSipSocket->recvfrom(buf,len,from,*fromlen);
  54         sMutex.unlock();
  55         return err;
  56 }
  57
  58 int TunnelManager::eXosipSelect(int max_fds, fd_set *s1, fd_set *s2, fd_set *s3, struct timeval *tv,void* userdata){
  59         struct timeval begin,cur;
  60         TunnelManager* lTunnelMgr=(TunnelManager*)userdata;
  61         if (tv!=0 && tv->tv_sec){
  62                 /*this is the select from udp.c, the one that is interesting to us*/
  63                 NativeSocket udp_fd=(NativeSocket)eXosip_get_udp_socket();
  64                 NativeSocket controlfd=(NativeSocket)eXosip_get_control_fd();
  65
  66                 FD_ZERO(s1);
  67                 gettimeofday(&begin,NULL);
  68                 do{
  69                         struct timeval abit;
  70
  71                         abit.tv_sec=0;
  72                         abit.tv_usec=20000;
  73                         sMutex.lock();
  74                         if (lTunnelMgr->mSipSocket!=NULL){
  75                                 if (lTunnelMgr->mSipSocket->hasData()) {
  76                                         sMutex.unlock();
  77                                         /* we make exosip believe that it has udp data to read*/
  78                                         FD_SET(udp_fd,s1);
  79                                         return 1;
  80                                 }
  81                         }
  82                         sMutex.unlock();
  83                         gettimeofday(&cur,NULL);
  84                         if (cur.tv_sec-begin.tv_sec>tv->tv_sec) {
  85                                 FD_SET(controlfd,s1);
  86                                 FD_SET(udp_fd,s1);
  87                                 return 0;
  88                         }
  89                         FD_ZERO(s1);
  90                         FD_SET(controlfd,s1);
  91                         if (select(max_fds,s1,s2,s3,&abit)==1) {
  92                                 return 1;
  93                         }
  94                 }while(1);
  95
  96         }else{
  97                 /*select called from other places, only the control fd is present */
  98                 return select(max_fds,s1,s2,s3,tv);
  99         }
 100 }
 101
 102
 103 void TunnelManager::addServer(const char *ip, int port,unsigned int udpMirrorPort,unsigned int delay) {
 104         addServer(ip,port);
 105         mUdpMirrorClients.push_back(UdpMirrorClient(ServerAddr(ip,udpMirrorPort),delay));
 106 }
 107
 108 void TunnelManager::addServer(const char *ip, int port) {
 109         mServerAddrs.push_back(ServerAddr(ip,port));
 110         if (mTunnelClient) mTunnelClient->addServer(ip,port);
 111 }
 112
 113 void TunnelManager::cleanServers() {
 114         mServerAddrs.clear();
 115
 116         UdpMirrorClientList::iterator it;
 117         mAutoDetectStarted=false;
 118         for (it = mUdpMirrorClients.begin(); it != mUdpMirrorClients.end();) {
 119                 UdpMirrorClient& s=*it++;
 120                 s.stop();
 121         }
 122         mUdpMirrorClients.clear();
 123         if (mTunnelClient) mTunnelClient->cleanServers();
 124 }
 125
 126 void TunnelManager::reconnect(){
 127         if (mTunnelClient)
 128                 mTunnelClient->reconnect();
 129 }
 130
 131 void TunnelManager::setCallback(StateCallback cb, void *userdata) {
 132         mCallback=cb;
 133         mCallbackData=userdata;
 134 }
 135
 136 static void sCloseRtpTransport(RtpTransport *t, void *userData){
 137         TunnelSocket *s=(TunnelSocket*)userData;
 138         TunnelManager *manager=(TunnelManager*)s->getUserPointer();
 139         manager->closeRtpTransport(t, s);
 140 }
 141 void TunnelManager::closeRtpTransport(RtpTransport *t, TunnelSocket *s){
 142         mTunnelClient->closeSocket(s);
 143         ms_free(t);
 144 }
 145
 146 static RtpTransport *sCreateRtpTransport(void* userData, int port){
 147         return ((TunnelManager *) userData)->createRtpTransport(port);
 148 }
 149
 150 RtpTransport *TunnelManager::createRtpTransport(int port){
 151         TunnelSocket *socket=mTunnelClient->createSocket(port);
 152         socket->setUserPointer(this);
 153         RtpTransport *t=ms_new0(RtpTransport,1);
 154         t->t_getsocket=NULL;
 155         t->t_recvfrom=customRecvfrom;
 156         t->t_sendto=customSendto;
 157         t->t_close=sCloseRtpTransport;
 158         t->data=socket;
 159         return t;
 160 }
 161
 162 void TunnelManager::start() {
 163         if (!mTunnelClient) {
 164                 mTunnelClient = new TunnelClient();
 165                 mTunnelClient->setCallback((StateCallback)tunnelCallback,this);
 166                 list<ServerAddr>::iterator it;
 167                 for(it=mServerAddrs.begin();it!=mServerAddrs.end();++it){
 168                         const ServerAddr &addr=*it;
 169                         mTunnelClient->addServer(addr.mAddr.c_str(), addr.mPort);
 170                 }
 171                 mTunnelClient->setHttpProxy(mHttpProxyHost.c_str(), mHttpProxyPort, mHttpUserName.c_str(), mHttpPasswd.c_str());
 172         }
 173         mTunnelClient->start();
 174
 175         if (mSipSocket == NULL) mSipSocket =mTunnelClient->createSocket(5060);
 176 }
 177
 178 bool TunnelManager::isStarted() {
 179         return mTunnelClient != 0 && mTunnelClient->isStarted();
 180 }
 181
 182 bool TunnelManager::isReady() const {
 183         return mTunnelClient && mTunnelClient->isReady();
 184 }
 185
 186 int TunnelManager::customSendto(struct _RtpTransport *t, mblk_t *msg , int flags, const struct sockaddr *to, socklen_t tolen){
 187         int size;
 188         msgpullup(msg,-1);
 189         size=msgdsize(msg);
 190         ((TunnelSocket*)t->data)->sendto(msg->b_rptr,size,to,tolen);
 191         return size;
 192 }
 193
 194 int TunnelManager::customRecvfrom(struct _RtpTransport *t, mblk_t *msg, int flags, struct sockaddr *from, socklen_t *fromlen){
 195         int err=((TunnelSocket*)t->data)->recvfrom(msg->b_wptr,msg->b_datap->db_lim-msg->b_datap->db_base,from,*fromlen);
 196         if (err>0) return err;
 197         return 0;
 198 }
 199
 200
 201 TunnelManager::TunnelManager(LinphoneCore* lc) :TunnelClientController()
 202 ,mCore(lc)
 203 ,mSipSocket(NULL)
 204 ,mCallback(NULL)
 205 ,mEnabled(false)
 206 ,mTunnelClient(NULL)
 207 ,mAutoDetectStarted(false)
 208 ,mHttpProxyPort(0){
 209
 210         mExosipTransport.data=this;
 211         mExosipTransport.recvfrom=eXosipRecvfrom;
 212         mExosipTransport.sendto=eXosipSendto;
 213         mExosipTransport.select=eXosipSelect;
 214         mStateChanged=false;
 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;
 224 }
 225
 226 TunnelManager::~TunnelManager(){
 227         stopClient();
 228 }
 229
 230 void TunnelManager::stopClient(){
 231         eXosip_transport_hook_register(NULL);
 232         if (mSipSocket != NULL){
 233                 sMutex.lock();
 234                 mTunnelClient->closeSocket(mSipSocket);
 235                 mSipSocket = NULL;
 236                 sMutex.unlock();
 237         }
 238         if (mTunnelClient){
 239                 delete mTunnelClient;
 240                 mTunnelClient=NULL;
 241         }
 242 }
 243
 244 void TunnelManager::processTunnelEvent(){
 245         LinphoneProxyConfig* lProxy;
 246         linphone_core_get_default_proxy(mCore, &lProxy);
 247
 248         if (mEnabled && mTunnelClient->isReady()){
 249                 ms_message("Tunnel is up, registering now");
 250                 linphone_core_set_rtp_transport_factories(mCore,&mTransportFactories);
 251                 eXosip_transport_hook_register(&mExosipTransport);
 252                 //force transport to udp
 253                 LCSipTransports lTransport;
 254
 255                 lTransport.udp_port=15060;
 256                 lTransport.tcp_port=0;
 257                 lTransport.tls_port=0;
 258                 lTransport.dtls_port=0;
 259
 260                 linphone_core_set_sip_transports(mCore, &lTransport);
 261                 //register
 262                 if (lProxy) {
 263                         linphone_proxy_config_done(lProxy);
 264                 }
 265         }else if (mEnabled && !mTunnelClient->isReady()){
 266                 /* we got disconnected from the tunnel */
 267                 if (lProxy && linphone_proxy_config_is_registered(lProxy)) {
 268                         /*forces de-registration so that we register again when the tunnel is up*/
 269                         linphone_proxy_config_edit(lProxy);
 270                         linphone_core_iterate(mCore);
 271                 }
 272         }
 273 }
 274
 275 void TunnelManager::waitUnRegistration(){
 276         LinphoneProxyConfig* lProxy;
 277         linphone_core_get_default_proxy(mCore, &lProxy);
 278         if (lProxy && linphone_proxy_config_get_state(lProxy)==LinphoneRegistrationOk) {
 279                 int i=0;
 280                 linphone_proxy_config_edit(lProxy);
 281                 //make sure unregister is sent and authenticated
 282                 do{
 283                         linphone_core_iterate(mCore);
 284                         ms_usleep(20000);
 285                         if (i>100){
 286                                 ms_message("tunnel: timeout for unregistration expired, giving up");
 287                                 break;
 288                         }
 289                         i++;
 290                 }while(linphone_proxy_config_get_state(lProxy)!=LinphoneRegistrationCleared);
 291         }
 292 }
 293
 294 void TunnelManager::enable(bool isEnable) {
 295         ms_message("Turning tunnel [%s]",(isEnable?"on":"off"));
 296         if (isEnable && !mEnabled){
 297                 mEnabled=true;
 298                 //1 save transport
 299                 linphone_core_get_sip_transports(mCore, &mRegularTransport);
 300                 //2 unregister
 301                 waitUnRegistration();
 302                 //3 insert tunnel
 303                 start();
 304         }else if (!isEnable && mEnabled){
 305                 //1 unregister
 306                 waitUnRegistration();
 307
 308                 mEnabled=false;
 309                 stopClient();
 310
 311                 linphone_core_set_rtp_transport_factories(mCore,NULL);
 312
 313                 eXosip_transport_hook_register(NULL);
 314                 //Restore transport
 315                 linphone_core_set_sip_transports(mCore, &mRegularTransport);
 316                 //register
 317                 LinphoneProxyConfig* lProxy;
 318                 linphone_core_get_default_proxy(mCore, &lProxy);
 319                 if (lProxy) {
 320                         linphone_proxy_config_done(lProxy);
 321                 }
 322
 323         }
 324 }
 325
 326 void TunnelManager::tunnelCallback(bool connected, TunnelManager *zis){
 327         zis->mStateChanged=true;
 328 }
 329
 330 /*invoked from linphone_core_iterate() */
 331 void TunnelManager::sOnIterate(TunnelManager *zis){
 332         if (zis->mStateChanged){
 333                 zis->mStateChanged=false;
 334                 zis->processTunnelEvent();
 335         }
 336 }
 337
 338 #ifdef ANDROID
 339 static void linphone_android_log_handler(int lev, const char *fmt, va_list args){
 340         int prio;
 341         switch(lev){
 342         case TUNNEL_DEBUG:      prio = ANDROID_LOG_DEBUG;       break;
 343         case TUNNEL_INFO:       prio = ANDROID_LOG_INFO;        break;
 344         case TUNNEL_NOTICE:     prio = ANDROID_LOG_INFO;        break;
 345         case TUNNEL_WARN:       prio = ANDROID_LOG_WARN;        break;
 346         case TUNNEL_ERROR:      prio = ANDROID_LOG_ERROR;       break;
 347         default:                        prio = ANDROID_LOG_DEFAULT;     break;
 348         }
 349         __android_log_vprint(prio, LOG_DOMAIN, fmt, args);
 350 }
 351 #endif /*ANDROID*/
 352
 353 void TunnelManager::enableLogs(bool value) {
 354         enableLogs(value,NULL);
 355 }
 356
 357 void TunnelManager::enableLogs(bool isEnabled,LogHandler logHandler) {
 358         if (logHandler != NULL) SetLogHandler(logHandler);
 359 #ifdef ANDROID
 360         else SetLogHandler(linphone_android_log_handler);
 361 #else
 362         else SetLogHandler(default_log_handler);
 363 #endif
 364
 365         if (isEnabled) {
 366                 SetLogLevel(TUNNEL_ERROR|TUNNEL_WARN|TUNNEL_INFO);
 367         } else {
 368                 SetLogLevel(TUNNEL_ERROR|TUNNEL_WARN);
 369         }
 370 }
 371
 372
 373 bool TunnelManager::isEnabled() {
 374         return mEnabled;
 375 }
 376 void TunnelManager::UdpMirrorClientListener(bool isUdpAvailable, void* data) {
 377         TunnelManager* thiz = (TunnelManager*)data;
 378         if (isUdpAvailable) {
 379                 LOGI("Tunnel is not required, disabling");
 380                 thiz->enable(false);
 381                 thiz->mAutoDetectStarted = false;
 382         } else {
 383                 if (++thiz->mCurrentUdpMirrorClient !=thiz->mUdpMirrorClients.end()) {
 384                         //1 enable tunnable but also try backup server
 385                         LOGI("Tunnel is required, enabling; Trying backup udp mirror");
 386
 387                         UdpMirrorClient &lUdpMirrorClient=*thiz->mCurrentUdpMirrorClient;
 388                         lUdpMirrorClient.start(TunnelManager::UdpMirrorClientListener,(void*)thiz);
 389                 } else {
 390                         LOGI("Tunnel is required, enabling; no backup udp mirror available");
 391                         thiz->mAutoDetectStarted = false;
 392                 }
 393                 thiz->enable(true);
 394         }
 395         return;
 396 }
 397
 398 void TunnelManager::autoDetect() {
 399         // first check if udp mirrors was provisionned
 400         if (mUdpMirrorClients.empty()) {
 401                 LOGE("No UDP mirror server configured aborting auto detection");
 402                 return;
 403         }
 404         if (mAutoDetectStarted) {
 405                 LOGE("auto detection already in progress, restarting");
 406                 (*mCurrentUdpMirrorClient).stop();
 407         }
 408         mAutoDetectStarted=true;
 409         mCurrentUdpMirrorClient =mUdpMirrorClients.begin();
 410         UdpMirrorClient &lUdpMirrorClient=*mCurrentUdpMirrorClient;
 411         lUdpMirrorClient.start(TunnelManager::UdpMirrorClientListener,(void*)this);
 412
 413 }
 414
 415 void TunnelManager::setHttpProxyAuthInfo(const char* username,const char* passwd) {
 416         mHttpUserName=username?username:"";
 417         mHttpPasswd=passwd?passwd:"";
 418         if (mTunnelClient) mTunnelClient->setHttpProxyAuthInfo(username,passwd);
 419 }
 420
 421 void TunnelManager::setHttpProxy(const char *host,int port, const char *username, const char *passwd){
 422         mHttpUserName=username?username:"";
 423         mHttpPasswd=passwd?passwd:"";
 424         mHttpProxyPort=(port>0) ? port : 0;
 425         mHttpProxyHost=host ? host : "";
 426         if (mTunnelClient) mTunnelClient->setHttpProxy(host, port, username, passwd);
 427 }
 428
 429 LinphoneCore *TunnelManager::getLinphoneCore(){
 430         return mCore;
 431 }