X-Git-Url: https://git.syn-net.org/debian/?p=anytun.git;a=blobdiff_plain;f=src%2Fanytun.cpp;h=d125ee98de4a9903b3027fb6be6153a9cc50831b;hp=1ac93971576095e720ab9fff499392ed334be24e;hb=ef0cacf2508418915d3f64b04003be3c13fed3cc;hpb=ece844834d2cecc028ce81ca283f5d441088580e

diff --git a/src/anytun.cpp b/src/anytun.cpp
index 1ac9397..d125ee9 100644
--- a/src/anytun.cpp
+++ b/src/anytun.cpp
@@ -11,7 +11,7 @@
  *  tunneling and relaying of packets of any protocol.
  *
  *
- *  Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl, 
+ *  Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
  *                          Christian Pointner <satp@wirdorange.org>
  *
  *  This file is part of Anytun.
@@ -84,18 +84,18 @@ bool disableRouting = false;
 
 void createConnection(const PacketSourceEndpoint& remote_end, window_size_t seqSize, mux_t mux)
 {
-	SeqWindow* seq = new SeqWindow(seqSize);
-	seq_nr_t seq_nr_=0;
-  KeyDerivation * kd = KeyDerivationFactory::create(gOpt.getKdPrf());
+  SeqWindow* seq = new SeqWindow(seqSize);
+  seq_nr_t seq_nr_=0;
+  KeyDerivation* kd = KeyDerivationFactory::create(gOpt.getKdPrf());
   kd->init(gOpt.getKey(), gOpt.getSalt(), gOpt.getPassphrase());
   kd->setRole(gOpt.getRole());
   cLog.msg(Log::PRIO_NOTICE) << "added connection remote host " << remote_end;
 
-	ConnectionParam connparam ((*kd), (*seq), seq_nr_, remote_end);
- 	gConnectionList.addConnection(connparam,mux);
+  ConnectionParam connparam((*kd), (*seq), seq_nr_, remote_end);
+  gConnectionList.addConnection(connparam,mux);
 #ifndef ANYTUN_NOSYNC
-  SyncCommand sc (gConnectionList,mux);
-	gSyncQueue.push(sc);
+  SyncCommand sc(gConnectionList,mux);
+  gSyncQueue.push(sc);
 #endif
 }
 
@@ -118,16 +118,13 @@ void syncConnector(const OptionHost& connto)
 
 void syncListener()
 {
-  try
-  {
+  try {
     SyncServer server(gOpt.getLocalSyncAddr(), gOpt.getLocalSyncPort(), boost::bind(syncOnConnect, _1));
     gSyncQueue.setSyncServerPtr(&server);
     server.run();
-  }
-  catch(std::runtime_error& e) {
+  } catch(std::runtime_error& e) {
     cLog.msg(Log::PRIO_ERROR) << "sync listener thread died due to an uncaught runtime_error: " << e.what();
-  }
-  catch(std::exception& e) {
+  } catch(std::exception& e) {
     cLog.msg(Log::PRIO_ERROR) << "sync listener thread died due to an uncaught exception: " << e.what();
   }
 }
@@ -136,88 +133,91 @@ void syncListener()
 void sender(TunDevice* dev, PacketSource* src)
 {
   if(!dev || !src) {
-    cLog.msg(Log::PRIO_ERROR) << "sender thread died because either dev or src pointer is null";    
+    cLog.msg(Log::PRIO_ERROR) << "sender thread died because either dev or src pointer is null";
     return;
   }
 
-  try 
-  {
+  try {
     std::auto_ptr<Cipher> c(CipherFactory::create(gOpt.getCipher(), KD_OUTBOUND));
-    std::auto_ptr<AuthAlgo> a(AuthAlgoFactory::create(gOpt.getAuthAlgo(), KD_OUTBOUND) );
-    
+    std::auto_ptr<AuthAlgo> a(AuthAlgoFactory::create(gOpt.getAuthAlgo(), KD_OUTBOUND));
+
     PlainPacket plain_packet(MAX_PACKET_LENGTH);
     EncryptedPacket encrypted_packet(MAX_PACKET_LENGTH, gOpt.getAuthTagLength());
-    
-    u_int16_t mux = gOpt.getMux();
+
+    uint16_t mux = gOpt.getMux();
     PacketSourceEndpoint emptyEndpoint;
     while(1) {
       plain_packet.setLength(MAX_PACKET_LENGTH);
       encrypted_packet.withAuthTag(false);
       encrypted_packet.setLength(MAX_PACKET_LENGTH);
-      
-          // read packet from device
+
+      // read packet from device
       int len = dev->read(plain_packet.getPayload(), plain_packet.getPayloadLength());
-      if(len < 0)
-        continue; // silently ignore device read errors, this is probably no good idea...
+      if(len < 0) {
+        continue;  // silently ignore device read errors, this is probably no good idea...
+      }
 
-      if(static_cast<u_int32_t>(len) < PlainPacket::getHeaderLength())
-        continue; // ignore short packets
+      if(static_cast<uint32_t>(len) < PlainPacket::getHeaderLength()) {
+        continue;  // ignore short packets
+      }
       plain_packet.setPayloadLength(len);
-          // set payload type
-      if(dev->getType() == TYPE_TUN)
+      // set payload type
+      if(dev->getType() == TYPE_TUN) {
         plain_packet.setPayloadType(PAYLOAD_TYPE_TUN);
-      else if(dev->getType() == TYPE_TAP)
+      } else if(dev->getType() == TYPE_TAP) {
         plain_packet.setPayloadType(PAYLOAD_TYPE_TAP);
-      else 
+      } else {
         plain_packet.setPayloadType(0);
-      
-      if(gConnectionList.empty())
+      }
+
+      if(gConnectionList.empty()) {
         continue;
-          //std::cout << "got Packet for plain "<<plain_packet.getDstAddr().toString();
-			ConnectionMap::iterator cit;
+      }
+      //std::cout << "got Packet for plain "<<plain_packet.getDstAddr().toString();
+      ConnectionMap::iterator cit;
 #ifndef NO_ROUTING
-			if (!disableRouting)
-				try {
-					mux = gRoutingTable.getRoute(plain_packet.getDstAddr());
-							//std::cout << " -> "<<mux << std::endl;
-					cit = gConnectionList.getConnection(mux);
-				} catch (std::exception&) { continue; } // no route
-			else
-				cit = gConnectionList.getBegin();
+      if(!disableRouting)
+        try {
+          mux = gRoutingTable.getRoute(plain_packet.getDstAddr());
+          //std::cout << " -> "<<mux << std::endl;
+          cit = gConnectionList.getConnection(mux);
+        } catch(std::exception&) { continue; }  // no route
+      else {
+        cit = gConnectionList.getBegin();
+      }
 #else
-				cit = gConnectionList.getBegin();
+      cit = gConnectionList.getBegin();
 #endif
 
-      if(cit==gConnectionList.getEnd())
-        continue; //no connection
-      ConnectionParam & conn = cit->second;
-      
+      if(cit==gConnectionList.getEnd()) {
+        continue;  //no connection
+      }
+      ConnectionParam& conn = cit->second;
+
       if(conn.remote_end_ == emptyEndpoint) {
         //cLog.msg(Log::PRIO_INFO) << "no remote address set";
         continue;
       }
 
-          // encrypt packet
+      // encrypt packet
       c->encrypt(conn.kd_, plain_packet, encrypted_packet, conn.seq_nr_, gOpt.getSenderId(), mux);
-      
+
       encrypted_packet.setHeader(conn.seq_nr_, gOpt.getSenderId(), mux);
       conn.seq_nr_++;
-      
-          // add authentication tag
+
+      // add authentication tag
       a->generate(conn.kd_, encrypted_packet);
 
       try {
         src->send(encrypted_packet.getBuf(), encrypted_packet.getLength(), conn.remote_end_);
-      } catch (std::exception& /*e*/) {
-				//TODO: do something here
-		  	//cLog.msg(Log::PRIO_ERROR) << "could not send data: " << e.what();
-	  	} 
+      } catch(std::exception& /*e*/) {
+        //TODO: do something here
+        //cLog.msg(Log::PRIO_ERROR) << "could not send data: " << e.what();
+      }
     }
-  }
-  catch(std::runtime_error& e) {
+  } catch(std::runtime_error& e) {
     cLog.msg(Log::PRIO_ERROR) << "sender thread died due to an uncaught runtime_error: " << e.what();
-  }
-  catch(std::exception& e) {
+  } catch(std::exception& e) {
     cLog.msg(Log::PRIO_ERROR) << "sender thread died due to an uncaught exception: " << e.what();
   }
 }
@@ -225,98 +225,100 @@ void sender(TunDevice* dev, PacketSource* src)
 void receiver(TunDevice* dev, PacketSource* src)
 {
   if(!dev || !src) {
-    cLog.msg(Log::PRIO_ERROR) << "receiver thread died because either dev or src pointer is null";    
+    cLog.msg(Log::PRIO_ERROR) << "receiver thread died because either dev or src pointer is null";
     return;
   }
 
-  try 
-  {
+  try {
     std::auto_ptr<Cipher> c(CipherFactory::create(gOpt.getCipher(), KD_INBOUND));
     std::auto_ptr<AuthAlgo> a(AuthAlgoFactory::create(gOpt.getAuthAlgo(), KD_INBOUND));
-    
-    u_int32_t auth_tag_length = gOpt.getAuthTagLength();
+
+    uint32_t auth_tag_length = gOpt.getAuthTagLength();
     EncryptedPacket encrypted_packet(MAX_PACKET_LENGTH, auth_tag_length);
     PlainPacket plain_packet(MAX_PACKET_LENGTH);
-    
+
     while(1) {
       PacketSourceEndpoint remote_end;
 
       plain_packet.setLength(MAX_PACKET_LENGTH);
       encrypted_packet.withAuthTag(false);
       encrypted_packet.setLength(MAX_PACKET_LENGTH);
-      
-          // read packet from socket
+
+      // read packet from socket
       int len;
       try {
         len = src->recv(encrypted_packet.getBuf(), encrypted_packet.getLength(), remote_end);
-      } catch (std::exception& /*e*/) { 
-				//TODO: do something here
-		  	//cLog.msg(Log::PRIO_ERROR) << "could not recive packet "<< e.what();
-		  	continue; 
-	  	}
-      if(len < 0)
-        continue; // silently ignore socket recv errors, this is probably no good idea...
-
-      if(static_cast<u_int32_t>(len) < (EncryptedPacket::getHeaderLength() + auth_tag_length))
-        continue; // ignore short packets
+      } catch(std::exception& /*e*/) {
+        //TODO: do something here
+        //cLog.msg(Log::PRIO_ERROR) << "could not recive packet "<< e.what();
+        continue;
+      }
+      if(len < 0) {
+        continue;  // silently ignore socket recv errors, this is probably no good idea...
+      }
+
+      if(static_cast<uint32_t>(len) < (EncryptedPacket::getHeaderLength() + auth_tag_length)) {
+        continue;  // ignore short packets
+      }
       encrypted_packet.setLength(len);
-      
+
       mux_t mux = encrypted_packet.getMux();
-          // autodetect peer
-      if( gConnectionList.empty() && gOpt.getRemoteAddr() == "") {
+      // autodetect peer
+      if(gConnectionList.empty() && gOpt.getRemoteAddr() == "") {
         cLog.msg(Log::PRIO_NOTICE) << "autodetected remote host " << remote_end;
         createConnection(remote_end, gOpt.getSeqWindowSize(),mux);
       }
-      
+
       ConnectionMap::iterator cit = gConnectionList.getConnection(mux);
-      if (cit == gConnectionList.getEnd())
+      if(cit == gConnectionList.getEnd()) {
         continue;
-      ConnectionParam & conn = cit->second;
-      
-          // check whether auth tag is ok or not
+      }
+      ConnectionParam& conn = cit->second;
+
+      // check whether auth tag is ok or not
       if(!a->checkTag(conn.kd_, encrypted_packet)) {
         cLog.msg(Log::PRIO_NOTICE) << "wrong Authentication Tag!";
         continue;
-      }        
+      }
 
-          // Replay Protection
+      // Replay Protection
       if(conn.seq_window_.checkAndAdd(encrypted_packet.getSenderId(), encrypted_packet.getSeqNr())) {
-        cLog.msg(Log::PRIO_NOTICE) << "Replay attack from " << conn.remote_end_ 
+        cLog.msg(Log::PRIO_NOTICE) << "Replay attack from " << conn.remote_end_
                                    << " seq:"<< encrypted_packet.getSeqNr() << " sid: "<< encrypted_packet.getSenderId();
         continue;
       }
-      
-          //Allow dynamic IP changes 
-          //TODO: add command line option to turn this off
-      if (remote_end != conn.remote_end_) {
+
+      //Allow dynamic IP changes
+      //TODO: add command line option to turn this off
+      if(remote_end != conn.remote_end_) {
         cLog.msg(Log::PRIO_NOTICE) << "connection "<< mux << " autodetected remote host ip changed " << remote_end;
         conn.remote_end_=remote_end;
 #ifndef ANYTUN_NOSYNC
-        SyncCommand sc (gConnectionList,mux);
+        SyncCommand sc(gConnectionList,mux);
         gSyncQueue.push(sc);
 #endif
-      }	
-         // ignore zero length packets
-      if(encrypted_packet.getPayloadLength() <= PlainPacket::getHeaderLength())
+      }
+      // ignore zero length packets
+      if(encrypted_packet.getPayloadLength() <= PlainPacket::getHeaderLength()) {
         continue;
+      }
 
-          // decrypt packet
+      // decrypt packet
       c->decrypt(conn.kd_, encrypted_packet, plain_packet);
-      
-          // check payload_type
-      if((dev->getType() == TYPE_TUN && plain_packet.getPayloadType() != PAYLOAD_TYPE_TUN4 && 
-                                              plain_packet.getPayloadType() != PAYLOAD_TYPE_TUN6) ||
-         (dev->getType() == TYPE_TAP && plain_packet.getPayloadType() != PAYLOAD_TYPE_TAP))
+
+      // check payload_type
+      if((dev->getType() == TYPE_TUN && plain_packet.getPayloadType() != PAYLOAD_TYPE_TUN4 &&
+          plain_packet.getPayloadType() != PAYLOAD_TYPE_TUN6) ||
+          (dev->getType() == TYPE_TAP && plain_packet.getPayloadType() != PAYLOAD_TYPE_TAP)) {
         continue;
-      
-          // write it on the device
+      }
+
+      // write it on the device
       dev->write(plain_packet.getPayload(), plain_packet.getLength());
     }
-  }
-  catch(std::runtime_error& e) {
+  } catch(std::runtime_error& e) {
     cLog.msg(Log::PRIO_ERROR) << "receiver thread died due to an uncaught runtime_error: " << e.what();
-  }
-  catch(std::exception& e) {
+  } catch(std::exception& e) {
     cLog.msg(Log::PRIO_ERROR) << "receiver thread died due to an uncaught exception: " << e.what();
   }
 }
@@ -324,9 +326,9 @@ void receiver(TunDevice* dev, PacketSource* src)
 void startSendRecvThreads(TunDevice* dev, PacketSource* src)
 {
   src->waitUntilReady();
-  
+
   boost::thread(boost::bind(sender, dev, src));
-  boost::thread(boost::bind(receiver, dev, src)); 
+  boost::thread(boost::bind(receiver, dev, src));
 }
 
 
@@ -336,23 +338,18 @@ int main(int argc, char* argv[])
   try {
     if(argc > 1) {
       if(std::string(argv[1]) == "install") {
-        WinService::install();  
+        WinService::install();
         return 0;
-      }
-      else if(std::string(argv[1]) == "uninstall") {
-        WinService::uninstall();  
+      } else if(std::string(argv[1]) == "uninstall") {
+        WinService::uninstall();
         return 0;
       }
     }
     WinService::start();
     return 0;
-  }
-  catch(std::runtime_error& e)
-  {
+  } catch(std::runtime_error& e) {
     std::cout << "caught runtime error, exiting: " << e.what() << std::endl;
-  }
-  catch(std::exception& e)
-  {
+  } catch(std::exception& e) {
     std::cout << "caught exception, exiting: " << e.what() << std::endl;
   }
 }
@@ -363,20 +360,18 @@ int real_main(int argc, char* argv[], WinService& service)
 int main(int argc, char* argv[])
 {
   DaemonService service;
-#endif  
-  try 
-  {
-    try 
-    {
-      if(!gOpt.parse(argc, argv))
+#endif
+  try {
+    try {
+      if(!gOpt.parse(argc, argv)) {
         exit(0);
+      }
 
       StringList targets = gOpt.getLogTargets();
-      for(StringList::const_iterator it = targets.begin();it != targets.end(); ++it)
+      for(StringList::const_iterator it = targets.begin(); it != targets.end(); ++it) {
         cLog.addTarget(*it);
-    }
-    catch(syntax_error& e)
-    {
+      }
+    } catch(syntax_error& e) {
       std::cerr << e << std::endl;
       gOpt.printUsage();
       exit(-1);
@@ -385,17 +380,18 @@ int main(int argc, char* argv[])
     cLog.msg(Log::PRIO_NOTICE) << "anytun started...";
     gOpt.parse_post(); // print warnings
 
-        // daemonizing has to done before any thread gets started
+    // daemonizing has to done before any thread gets started
     service.initPrivs(gOpt.getUsername(), gOpt.getGroupname());
-    if(gOpt.getDaemonize())
+    if(gOpt.getDaemonize()) {
       service.daemonize();
+    }
 
     OptionNetwork net = gOpt.getIfconfigParam();
     TunDevice dev(gOpt.getDevName(), gOpt.getDevType(), net.net_addr, net.prefix_length);
     cLog.msg(Log::PRIO_NOTICE) << "dev opened - name '" << dev.getActualName() << "', node '" << dev.getActualNode() << "'";
     cLog.msg(Log::PRIO_NOTICE) << "dev type is '" << dev.getTypeString() << "'";
 
-    SysExec * postup_script = NULL;
+    SysExec* postup_script = NULL;
     if(gOpt.getPostUpScript() != "") {
       cLog.msg(Log::PRIO_NOTICE) << "executing post-up script '" << gOpt.getPostUpScript() << "'";
       StringVector args = boost::assign::list_of(dev.getActualName())(dev.getActualNode());
@@ -405,8 +401,7 @@ int main(int argc, char* argv[])
     if(gOpt.getChrootDir() != "") {
       try {
         service.chroot(gOpt.getChrootDir());
-      }
-      catch(const std::runtime_error& e) {
+      } catch(const std::runtime_error& e) {
         cLog.msg(Log::PRIO_WARNING) << "ignoring chroot error: " << e.what();
       }
     }
@@ -416,68 +411,70 @@ int main(int argc, char* argv[])
     gSignalController.init(service);
     gResolver.init();
     boost::thread(boost::bind(&TunDevice::waitUntilReady,&dev));
-    if (postup_script)
+    if(postup_script) {
       boost::thread(boost::bind(&SysExec::waitAndDestroy,postup_script));
+    }
+
+    initCrypto();
 
-    initCrypto();   
- 
     PacketSource* src = new UDPPacketSource(gOpt.getLocalAddr(), gOpt.getLocalPort());
 
-    if(gOpt.getRemoteAddr() != "")
+    if(gOpt.getRemoteAddr() != "") {
       gResolver.resolveUdp(gOpt.getRemoteAddr(), gOpt.getRemotePort(), boost::bind(createConnectionResolver, _1, gOpt.getSeqWindowSize(), gOpt.getMux()), boost::bind(createConnectionError, _1), gOpt.getResolvAddrType());
+    }
 
     HostList connect_to = gOpt.getRemoteSyncHosts();
 #ifndef NO_ROUTING
     NetworkList routes = gOpt.getRoutes();
-		NetworkList::const_iterator rit;
-		for(rit = routes.begin(); rit != routes.end(); ++rit) {
-			NetworkAddress addr( rit->net_addr );
-			NetworkPrefix prefix( addr, static_cast<u_int8_t>(rit->prefix_length));
-			gRoutingTable.addRoute( prefix, gOpt.getMux() );
-		}
-		if (connect_to.begin() == connect_to.end() || gOpt.getDevType()!="tun") {
-    	cLog.msg(Log::PRIO_NOTICE) << "No sync/control host defined or not a tun device. Disabling multi connection support (routing)";
-			disableRouting=true;
-		}
+    NetworkList::const_iterator rit;
+    for(rit = routes.begin(); rit != routes.end(); ++rit) {
+      NetworkAddress addr(rit->net_addr);
+      NetworkPrefix prefix(addr, static_cast<uint8_t>(rit->prefix_length));
+      gRoutingTable.addRoute(prefix, gOpt.getMux());
+    }
+    if(connect_to.begin() == connect_to.end() || gOpt.getDevType()!="tun") {
+      cLog.msg(Log::PRIO_NOTICE) << "No sync/control host defined or not a tun device. Disabling multi connection support (routing)";
+      disableRouting=true;
+    }
 #endif
 
 #ifndef ANYTUN_NOSYNC
     boost::thread* syncListenerThread = NULL;
-    if(gOpt.getLocalSyncPort() != "")
+    if(gOpt.getLocalSyncPort() != "") {
       syncListenerThread = new boost::thread(boost::bind(syncListener));
-    
+    }
+
     boost::thread_group connectThreads;
-    for(HostList::const_iterator it = connect_to.begin() ;it != connect_to.end(); ++it)
+    for(HostList::const_iterator it = connect_to.begin() ; it != connect_to.end(); ++it) {
       connectThreads.create_thread(boost::bind(syncConnector, *it));
+    }
 #endif
 
     // wait for packet source to finish in a seperate thread in order
     // to be still able to process signals while waiting
     boost::thread(boost::bind(startSendRecvThreads, &dev, src));
 
-    int ret = gSignalController.run();  
+    int ret = gSignalController.run();
 
-// TODO: stop all threads and cleanup
-// 
-//     if(src)
-//       delete src;
-//     if(connTo)
-//       delete connTo;
-    return ret; 
-  }
-  catch(std::runtime_error& e)
-  {
+    // TODO: stop all threads and cleanup
+    //
+    //     if(src)
+    //       delete src;
+    //     if(connTo)
+    //       delete connTo;
+    return ret;
+  } catch(std::runtime_error& e) {
     cLog.msg(Log::PRIO_ERROR) << "uncaught runtime error, exiting: " << e.what();
-    if(!service.isDaemonized())
+    if(!service.isDaemonized()) {
       std::cout << "uncaught runtime error, exiting: " << e.what() << std::endl;
-  }
-  catch(std::exception& e)
-  {
+    }
+  } catch(std::exception& e) {
     cLog.msg(Log::PRIO_ERROR) << "uncaught exception, exiting: " << e.what();
-    if(!service.isDaemonized())
+    if(!service.isDaemonized()) {
       std::cout << "uncaught exception, exiting: " << e.what() << std::endl;
+    }
   }
   return -1;
 }
-  
-  
+
+