1 files changed, 198 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/p2p/base/stunrequest.cpp b/kopete/protocols/jabber/jingle/libjingle/talk/p2p/base/stunrequest.cpp
new file mode 100644
index 00000000..14d64735
--- /dev/null
+++ b/kopete/protocols/jabber/jingle/libjingle/talk/p2p/base/stunrequest.cpp
@@ -0,0 +1,198 @@
+/*
+ * 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/stunrequest.h"
+#include "talk/p2p/base/helpers.h"
+#include <iostream>
+#include <cassert>
+
+namespace cricket {
+
+const uint32 MSG_STUN_SEND = 1;
+
+const int MAX_SENDS = 9;
+const int DELAY_UNIT = 100; // 100 milliseconds
+const int DELAY_MAX_FACTOR = 16;
+
+StunRequestManager::StunRequestManager(Thread* thread) : thread_(thread) {
+}
+
+StunRequestManager::~StunRequestManager() {
+  while (requests_.begin() != requests_.end()) {
+    StunRequest *request = requests_.begin()->second;
+    requests_.erase(requests_.begin());
+    delete request;
+  }
+}
+
+void StunRequestManager::Send(StunRequest* request) {
+  SendDelayed(request, 0);
+}
+
+void StunRequestManager::SendDelayed(StunRequest* request, int delay) {
+  request->set_manager(this);
+  assert(requests_.find(request->id()) == requests_.end());
+  requests_[request->id()] = request;
+  thread_->PostDelayed(delay, request, MSG_STUN_SEND, NULL);
+}
+
+void StunRequestManager::Remove(StunRequest* request) {
+  assert(request->manager() == this);
+  RequestMap::iterator iter = requests_.find(request->id());
+  if (iter != requests_.end()) {
+    assert(iter->second == request);
+    requests_.erase(iter);
+    thread_->Clear(request);
+  }
+}
+
+void StunRequestManager::Clear() {
+  std::vector<StunRequest*> requests;
+  for (RequestMap::iterator i = requests_.begin(); i != requests_.end(); ++i)
+    requests.push_back(i->second);
+
+  for (uint32 i = 0; i < requests.size(); ++i)
+    Remove(requests[i]);
+}
+
+bool StunRequestManager::CheckResponse(StunMessage* msg) {
+  RequestMap::iterator iter = requests_.find(msg->transaction_id());
+  if (iter == requests_.end())
+    return false;
+
+  StunRequest* request = iter->second;
+  if (msg->type() == GetStunResponseType(request->type())) {
+    request->OnResponse(msg);
+  } else if (msg->type() == GetStunErrorResponseType(request->type())) {
+    request->OnErrorResponse(msg);
+  } else {
+    LOG(LERROR) << "Received response with wrong type: " << msg->type()
+               << " (expecting " << GetStunResponseType(request->type()) << ")";
+    return false;
+  }
+
+  delete request;
+  return true;
+}
+
+bool StunRequestManager::CheckResponse(const char* data, size_t size) {
+  // Check the appropriate bytes of the stream to see if they match the
+  // transaction ID of a response we are expecting.
+
+  if (size < 20)
+    return false;
+
+  std::string id;
+  id.append(data + 4, 16);
+
+  RequestMap::iterator iter = requests_.find(id);
+  if (iter == requests_.end())
+    return false;
+
+  // Parse the STUN message and continue processing as usual.
+
+  ByteBuffer buf(data, size);
+  StunMessage msg;
+  if (!msg.Read(&buf))
+    return false;
+
+  return CheckResponse(&msg);
+}
+
+StunRequest::StunRequest()
+  : manager_(0), id_(CreateRandomString(16)), msg_(0), count_(0),
+    timeout_(false), tstamp_(0) {
+}
+
+StunRequest::StunRequest(StunMessage* request)
+  : manager_(0), id_(request->transaction_id()), msg_(request),
+    count_(0), timeout_(false) {
+}
+
+StunRequest::~StunRequest() {
+  assert(manager_ != NULL);
+  if (manager_) {
+    manager_->Remove(this);
+    manager_->thread_->Clear(this);
+  }
+  delete msg_;
+}
+
+const StunMessageType StunRequest::type() {
+  assert(msg_);
+  return msg_->type();
+}
+
+void StunRequest::set_manager(StunRequestManager* manager) {
+  assert(!manager_);
+  manager_ = manager;
+}
+
+void StunRequest::OnMessage(Message* pmsg) {
+  assert(manager_);
+  assert(pmsg->message_id == MSG_STUN_SEND);
+
+  if (!msg_) {
+    msg_ = new StunMessage();
+    msg_->SetTransactionID(id_);
+    Prepare(msg_);
+    assert(msg_->transaction_id() == id_);
+  }
+
+  if (timeout_) {
+    OnTimeout();
+    delete this;
+    return;
+  }
+
+  tstamp_ = GetMillisecondCount();
+
+  ByteBuffer buf;
+  msg_->Write(&buf);
+  manager_->SignalSendPacket(buf.Data(), buf.Length());
+
+  int delay = GetNextDelay();
+  manager_->thread_->PostDelayed(delay, this, MSG_STUN_SEND, NULL);
+}
+
+uint32 StunRequest::Elapsed() const {
+  return (GetMillisecondCount() - tstamp_);
+}
+
+int StunRequest::GetNextDelay() {
+  int delay = DELAY_UNIT * _min(1 << count_, DELAY_MAX_FACTOR);
+  count_ += 1;
+  if (count_ == MAX_SENDS)
+    timeout_ = true;
+  return delay;
+}
+
+} // namespace cricket