1 files changed, 171 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/p2p/base/stunport.cpp b/kopete/protocols/jabber/jingle/libjingle/talk/p2p/base/stunport.cpp
new file mode 100644
index 00000000..6d1dc6b1
--- /dev/null
+++ b/kopete/protocols/jabber/jingle/libjingle/talk/p2p/base/stunport.cpp
@@ -0,0 +1,171 @@
+/*
+ * libjingle
+ * Copyright 2004--2005, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice, 
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if defined(_MSC_VER) && _MSC_VER < 1300
+#pragma warning(disable:4786)
+#endif
+#include "talk/base/logging.h"
+#include "talk/p2p/base/stunport.h"
+#include "talk/p2p/base/helpers.h"
+#include <iostream>
+#include <cassert>
+
+#if defined(_MSC_VER) && _MSC_VER < 1300
+namespace std {
+  using ::strerror;
+}
+#endif
+
+#ifdef POSIX
+extern "C" {
+#include <errno.h>
+}
+#endif // POSIX
+
+namespace cricket {
+
+const int KEEPALIVE_DELAY = 10 * 1000; // 10 seconds - sort timeouts
+const int RETRY_DELAY = 50; // 50ms, from ICE spec
+const uint32 RETRY_TIMEOUT = 50 * 1000; // ICE says 50 secs
+
+// Handles a binding request sent to the STUN server.
+class StunPortBindingRequest : public StunRequest {
+public:
+  StunPortBindingRequest(StunPort* port) : port_(port) {
+    start_time_ = GetMillisecondCount();
+  }
+
+  virtual ~StunPortBindingRequest() {
+  }
+
+  virtual void Prepare(StunMessage* request) {
+    request->SetType(STUN_BINDING_REQUEST);
+  }
+
+  virtual void OnResponse(StunMessage* response) {
+    const StunAddressAttribute* addr_attr =
+        response->GetAddress(STUN_ATTR_MAPPED_ADDRESS);
+    if (!addr_attr) {
+      LOG(LERROR) << "Binding response missing mapped address.";
+    } else if (addr_attr->family() != 1) {
+      LOG(LERROR) << "Binding address has bad family";
+    } else {
+      SocketAddress addr(addr_attr->ip(), addr_attr->port());
+      if (port_->candidates().empty())
+        port_->add_address(addr, "udp");
+    }
+
+    // We will do a keep-alive regardless of whether this request suceeds.
+    // This should have almost no impact on network usage.
+    port_->requests_.SendDelayed(new StunPortBindingRequest(port_), KEEPALIVE_DELAY);
+  }
+
+  virtual void OnErrorResponse(StunMessage* response) {
+    const StunErrorCodeAttribute* attr = response->GetErrorCode();
+    if (!attr) {
+      LOG(LERROR) << "Bad allocate response error code";
+    } else {
+      LOG(LERROR) << "Binding error response:"
+                 << " class=" << attr->error_class()
+                 << " number=" << attr->number()
+                 << " reason='" << attr->reason() << "'";
+    }
+
+    if (GetMillisecondCount() - start_time_ <= RETRY_TIMEOUT)
+      port_->requests_.SendDelayed(new StunPortBindingRequest(port_), KEEPALIVE_DELAY);
+  }
+
+  virtual void OnTimeout() {
+    LOG(LERROR) << "Binding request timed out";
+    if (GetMillisecondCount() - start_time_ <= RETRY_TIMEOUT)
+      port_->requests_.SendDelayed(new StunPortBindingRequest(port_), RETRY_DELAY);
+  }
+
+private:
+  uint32 start_time_;
+  StunPort* port_;
+};
+
+const std::string STUN_PORT_TYPE("stun");
+
+StunPort::StunPort(Thread* thread, SocketFactory* factory, Network* network,
+                   const SocketAddress& local_addr,
+                   const SocketAddress& server_addr)
+  : UDPPort(thread, STUN_PORT_TYPE, factory, network),
+    server_addr_(server_addr), requests_(thread), error_(0) {
+
+  socket_ = CreatePacketSocket(PROTO_UDP);
+  socket_->SignalReadPacket.connect(this, &StunPort::OnReadPacket);
+  if (socket_->Bind(local_addr) < 0)
+    PLOG(LERROR, socket_->GetError()) << "bind";
+
+  requests_.SignalSendPacket.connect(this, &StunPort::OnSendPacket);
+}
+
+StunPort::~StunPort() {
+  delete socket_;
+}
+
+void StunPort::PrepareAddress() {
+  requests_.Send(new StunPortBindingRequest(this));
+}
+
+int StunPort::SendTo(
+    const void* data, size_t size, const SocketAddress& addr, bool payload) {
+  int sent = socket_->SendTo(data, size, addr);
+  if (sent < 0)
+    error_ = socket_->GetError();
+  return sent;
+}
+
+int StunPort::SetOption(Socket::Option opt, int value) {
+  return socket_->SetOption(opt, value);
+}
+
+int StunPort::GetError() {
+  return error_;
+}
+
+void StunPort::OnReadPacket(
+    const char* data, size_t size, const SocketAddress& remote_addr,
+    AsyncPacketSocket* socket) {
+  assert(socket == socket_);
+
+  // Look for a response to a binding request.
+  if (requests_.CheckResponse(data, size))
+    return;
+
+  // Process this data packet in the normal manner.
+  UDPPort::OnReadPacket(data, size, remote_addr);
+}
+
+void StunPort::OnSendPacket(const void* data, size_t size) {
+  if (socket_->SendTo(data, size, server_addr_) < 0)
+    PLOG(LERROR, socket_->GetError()) << "sendto";
+}
+
+} // namespace cricket