big svn cleanup

1 files changed, 268 insertions, 0 deletions

diff --git a/src/anyrtpproxy/commandHandler.cpp b/src/anyrtpproxy/commandHandler.cpp
new file mode 100644
index 0000000..032d001
--- /dev/null
+++ b/src/anyrtpproxy/commandHandler.cpp
@@ -0,0 +1,268 @@
+/*
+ *  anytun
+ *
+ *  The secure anycast tunneling protocol (satp) defines a protocol used
+ *  for communication between any combination of unicast and anycast
+ *  tunnel endpoints.  It has less protocol overhead than IPSec in Tunnel
+ *  mode and allows tunneling of every ETHER TYPE protocol (e.g.
+ *  ethernet, ip, arp ...). satp directly includes cryptography and
+ *  message authentication based on the methodes used by SRTP.  It is
+ *  intended to deliver a generic, scaleable and secure solution for
+ *  tunneling and relaying of packets of any protocol.
+ *
+ *
+ *  Copyright (C) 2007 anytun.org <satp@wirdorange.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <sstream>
+#include <vector>
+
+#include <iomanip>
+#include <iostream>
+
+#include "commandHandler.h"
+#include "../buffer.h"
+#include "../log.h"
+#include "../syncQueue.h"
+#include "../syncCommand.h"
+#include "../rtpSessionTable.h"
+#include "callIdQueue.h"
+
+#define MAX_COMMAND_LENGTH 1000
+
+CommandHandler::CommandHandler(SyncQueue& q, u_int16_t lp,PortWindow & pw) : queue_(q), running_(true), control_sock_(lp), 
+                                                             local_address_("0.0.0.0"), local_port_(lp),port_window_(pw)
+{
+  pthread_create(&thread_, NULL, run, this);
+}
+
+CommandHandler::CommandHandler(SyncQueue& q, string la, u_int16_t lp,PortWindow & pw) : queue_(q), running_(true), control_sock_(la, lp), 
+                                                                        local_address_(la), local_port_(lp),port_window_(pw)
+{
+  pthread_create(&thread_, NULL, run, this);
+}
+
+CommandHandler::~CommandHandler()
+{
+  pthread_cancel(thread_);
+  pthread_join(thread_, NULL);
+}
+
+void* CommandHandler::run(void* s)
+{
+  CommandHandler* self = reinterpret_cast<CommandHandler*>(s);
+
+  Buffer buf(u_int32_t(MAX_COMMAND_LENGTH));
+  try
+  {
+    string remote_host;
+    u_int16_t remote_port;
+ 
+    int len;
+    while(1)
+    {
+      buf.setLength(MAX_COMMAND_LENGTH);
+      len = self->control_sock_.recvFrom(buf.getBuf(), buf.getLength(), remote_host, remote_port);
+      buf.setLength(len);
+
+      std::string ret = self->handle(std::string(reinterpret_cast<char*>(buf.getBuf()), buf.getLength())); // TODO: reinterpret is ugly
+
+      cLog.msg(Log::PRIO_DEBUG) << "CommandHandler received Command from " << remote_host << ":" << remote_port 
+                                << ", ret='" << ret << "'";
+
+      self->control_sock_.sendTo(ret.c_str(), ret.length(), remote_host, remote_port);
+    }
+  }
+  catch(SocketException &e)
+  {
+    self->running_ = false;
+    pthread_exit(NULL);
+  }
+  self->running_ = false;
+  pthread_exit(NULL);
+}
+
+bool CommandHandler::isRunning()
+{
+  return running_;
+}
+
+
+
+std::string CommandHandler::handle(std::string command)
+{
+  istringstream iss(command);
+  ostringstream oss;
+  std::string cookie;
+  std::string cmd;
+
+  iss >> cookie;
+  oss << cookie << " ";
+
+  if(iss.bad() || iss.eof()) {
+    oss << RET_ERR_SYNTAX;
+    return oss.str();
+  }
+  iss >> cmd;
+
+  std::vector<std::string> params;
+  while(!iss.bad() && !iss.eof()) {
+    std::string tmp;
+    iss >> tmp;
+    params.push_back(tmp);
+  }
+
+  switch(std::toupper(cmd[0]))
+  {
+  case CMD_REQUEST:
+    if(params.size() < 4) { oss << RET_ERR_SYNTAX; break; }
+    oss << handleRequest(cmd.erase(0,1), params[0], params[1], params[2], params[3], (params.size() < 5) ? "" : params[4]);
+    break;
+  case CMD_RESPONSE:
+    if(params.size() < 4) { oss << RET_ERR_SYNTAX; break; }
+    oss << handleResponse(cmd.erase(0,1), params[0], params[1], params[2], params[3], (params.size() < 5) ? "" : params[4]);
+    break;
+  case CMD_DELETE:
+    if(params.size() < 2) { oss << RET_ERR_SYNTAX; break; }
+    oss << handleDelete(params[0], params[1], (params.size() < 3) ? "" : params[2]);
+    break;
+  case CMD_VERSION:
+    if(cmd.length() > 1 && cmd[1] == 'F') {
+      if(params.size() < 1) { oss << RET_ERR_SYNTAX; break; }
+      oss << handleVersionF(params[0]);
+      break;
+    }
+    oss << handleVersion();
+    break;
+  case CMD_INFO:
+    oss << handleInfo();
+    break;
+  default:
+    oss << RET_ERR_SYNTAX;
+    break;
+  }
+
+  return oss.str();
+}
+
+string CommandHandler::handleRequest(string modifiers, string call_id, string addr, string port, string from_tag, string to_tag)
+{
+  std::cout << "received request[" << modifiers << "] command ('" << call_id << "','" << addr  << "','" << port 
+            << "','" << from_tag << "','" << to_tag << "')" << std::endl;
+
+  try 
+  {
+    bool is_new;
+    RtpSession& session = gRtpSessionTable.getOrNewSession(call_id, is_new);
+    if(is_new)
+    {
+      u_int16_t port1 = port_window_.newPort(); // TODO: get next available port
+      u_int16_t port2 = port_window_.newPort(); // TODO: get next available port
+			if( !port1 || !port2)
+			{
+				if( port1) port_window_.freePort(port1);
+				if( port2) port_window_.freePort(port2);
+				throw std::runtime_error("no free port found");
+			}
+
+      session.setLocalAddr("0.0.0.0"); // TODO: read this from config
+      session.setLocalPort1(port1);
+      session.setLocalPort2(port2);
+    }
+    istringstream iss(port);
+    u_int16_t rport;
+    iss >> rport;
+    session.setRemotePort1(rport);
+    session.setRemoteAddr1(addr);
+
+    ostringstream oss;
+    oss << session.getLocalPort2();
+    return oss.str();
+  }
+  catch(std::exception& e)
+  {
+    return RET_ERR_UNKNOWN; // TODO: change to corret error value
+  }
+}
+
+string CommandHandler::handleResponse(string modifiers, string call_id, string addr, string port, string from_tag, string to_tag)
+{
+  std::cout << "received response[" << modifiers << "] command ('" << call_id << "','" << addr  << "','" << port 
+            << "','" << from_tag << "','" << to_tag << "')" << std::endl;
+
+  try
+  {
+    RtpSession& session = gRtpSessionTable.getSession(call_id);
+    istringstream iss(port);
+    u_int16_t rport;
+    iss >> rport;
+    session.setRemotePort2(rport);
+    session.setRemoteAddr2(addr);
+    session.isComplete(true);
+    SyncCommand sc(call_id);
+    queue_.push(sc);
+
+    ostringstream oss;
+    oss << session.getLocalPort1();
+    return oss.str();
+  }
+  catch(std::exception& e)
+  {
+    return RET_ERR_UNKNOWN; // TODO: change to corret error value
+  }
+}
+
+string CommandHandler::handleDelete(string call_id, string from_tag, string to_tag)
+{
+  std::cout << "received delete command ('" << call_id << "','" << from_tag << "','" << to_tag << "')" << std::endl;
+
+  try
+  {
+    RtpSession& session = gRtpSessionTable.getSession(call_id);
+    session.isDead(true);
+    SyncCommand sc(call_id);
+    queue_.push(sc);
+
+    return RET_OK;
+  }
+  catch(std::exception& e)
+  {
+    return RET_ERR_UNKNOWN; // TODO: change to corret error value
+  }
+}
+
+string CommandHandler::handleVersion()
+{
+  std::cout << "received version command" << std::endl;  
+  return BASE_VERSION;
+}
+
+string CommandHandler::handleVersionF(string date_code)
+{
+  std::cout << "received version[F] command ('" << date_code << "')" << std::endl;  
+  if(!date_code.compare(SUP_VERSION))
+    return "1";
+  
+  return "0";
+}
+
+string CommandHandler::handleInfo()
+{
+  std::cout << "received info command, ignoring" << std::endl;  
+  return RET_OK;
+}
+