Allow receiving a packet on a TURN port from an unknown address.

webrtc/p2p/base/turnserver.cc

 /*
  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 783 matching lines @@
     const rtc::PacketTime& packet_time) {
   ASSERT(external_socket_.get() == socket);
   Channel* channel = FindChannel(addr);
   if (channel) {
     // There is a channel bound to this address. Send as a channel message.
     rtc::ByteBufferWriter buf;
     buf.WriteUInt16(channel->id());
     buf.WriteUInt16(static_cast<uint16_t>(size));
     buf.WriteBytes(data, size);
     server_->Send(&conn_, buf);
-  } else if (HasPermission(addr.ipaddr())) {
+  } else if (!server_->enable_permission_checks_ ||
+             HasPermission(addr.ipaddr())) {
     // No channel, but a permission exists. Send as a data indication.
     TurnMessage msg;
     msg.SetType(TURN_DATA_INDICATION);
     msg.SetTransactionID(
         rtc::CreateRandomString(kStunTransactionIdLength));
     VERIFY(msg.AddAttribute(new StunXorAddressAttribute(
         STUN_ATTR_XOR_PEER_ADDRESS, addr)));
     VERIFY(msg.AddAttribute(new StunByteStringAttribute(
         STUN_ATTR_DATA, data, size)));
     server_->SendStun(&conn_, &msg);
@@ skipping 137 matching lines @@
                        MSG_ALLOCATION_TIMEOUT);
 }
 
 void TurnServerAllocation::Channel::OnMessage(rtc::Message* msg) {
   ASSERT(msg->message_id == MSG_ALLOCATION_TIMEOUT);
   SignalDestroyed(this);
   delete this;
 }
 
 }  // namespace cricket