The Tor Browser: media/mtransport/transportlayerice.cpp@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 // Original author: ekr@rtfm.com

     9 // Some of this code is cut-and-pasted from nICEr. Copyright is:

    11 /*

    12 Copyright (c) 2007, Adobe Systems, Incorporated

    13 All rights reserved.

    15 Redistribution and use in source and binary forms, with or without

    16 modification, are permitted provided that the following conditions are

    17 met:

    19 * Redistributions of source code must retain the above copyright

    20   notice, this list of conditions and the following disclaimer.

    22 * Redistributions in binary form must reproduce the above copyright

    23   notice, this list of conditions and the following disclaimer in the

    24   documentation and/or other materials provided with the distribution.

    26 * Neither the name of Adobe Systems, Network Resonance nor the names of its

    27   contributors may be used to endorse or promote products derived from

    28   this software without specific prior written permission.

    30 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    31 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    32 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    33 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    34 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    35 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    36 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    37 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    38 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    39 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    40 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    41 */

    44 #include <string>

    45 #include <vector>

    47 #include "nsCOMPtr.h"

    48 #include "nsComponentManagerUtils.h"

    49 #include "nsError.h"

    50 #include "nsIEventTarget.h"

    51 #include "nsNetCID.h"

    52 #include "nsComponentManagerUtils.h"

    53 #include "nsServiceManagerUtils.h"

    55 // nICEr includes

    56 extern "C" {

    57 #include "nr_api.h"

    58 #include "registry.h"

    59 #include "async_timer.h"

    60 #include "ice_util.h"

    61 #include "transport_addr.h"

    62 #include "nr_crypto.h"

    63 #include "nr_socket.h"

    64 #include "nr_socket_local.h"

    65 #include "stun_client_ctx.h"

    66 #include "stun_server_ctx.h"

    67 #include "ice_ctx.h"

    68 #include "ice_candidate.h"

    69 #include "ice_handler.h"

    70 }

    72 // Local includes

    73 #include "logging.h"

    74 #include "nricectx.h"

    75 #include "nricemediastream.h"

    76 #include "transportflow.h"

    77 #include "transportlayerice.h"

    79 namespace mozilla {

    81 #ifdef ERROR

    82 #undef ERROR

    83 #endif

    85 MOZ_MTLOG_MODULE("mtransport")

    87 TransportLayerIce::TransportLayerIce(const std::string& name,

    88     RefPtr<NrIceCtx> ctx, RefPtr<NrIceMediaStream> stream,

    89                                      int component)

    90     : name_(name), ctx_(ctx), stream_(stream), component_(component) {

    91   target_ = ctx->thread();

    93   stream_->SignalReady.connect(this, &TransportLayerIce::IceReady);

    94   stream_->SignalFailed.connect(this, &TransportLayerIce::IceFailed);

    95   stream_->SignalPacketReceived.connect(this,

    96                                         &TransportLayerIce::IcePacketReceived);

    97   if (stream_->state() == NrIceMediaStream::ICE_OPEN) {

    98     TL_SET_STATE(TS_OPEN);

    99   }

   100 }

   102 TransportLayerIce::~TransportLayerIce() {

   103   // No need to do anything here, since we use smart pointers

   104 }

   106 TransportResult TransportLayerIce::SendPacket(const unsigned char *data,

   107                                               size_t len) {

   108   CheckThread();

   109   nsresult res = stream_->SendPacket(component_, data, len);

   111   if (!NS_SUCCEEDED(res)) {

   112     return (res == NS_BASE_STREAM_WOULD_BLOCK) ?

   113         TE_WOULDBLOCK : TE_ERROR;

   114   }

   116   MOZ_MTLOG(ML_DEBUG, LAYER_INFO << " SendPacket(" << len << ") succeeded");

   118   return len;

   119 }

   122 void TransportLayerIce::IceCandidate(NrIceMediaStream *stream,

   123                                      const std::string&) {

   124   // NO-OP for now

   125 }

   127 void TransportLayerIce::IceReady(NrIceMediaStream *stream) {

   128   CheckThread();

   129   TL_SET_STATE(TS_OPEN);

   130 }

   132 void TransportLayerIce::IceFailed(NrIceMediaStream *stream) {

   133   CheckThread();

   134   TL_SET_STATE(TS_ERROR);

   135 }

   137 void TransportLayerIce::IcePacketReceived(NrIceMediaStream *stream, int component,

   138                        const unsigned char *data, int len) {

   139   CheckThread();

   140   // We get packets for both components, so ignore the ones that aren't

   141   // for us.

   142   if (component_ != component)

   143     return;

   145   MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "PacketReceived(" << stream->name() << ","

   146     << component << "," << len << ")");

   147   SignalPacketReceived(this, data, len);

   148 }

   150 }  // close namespace

The Tor Browser / file revision

media/mtransport/transportlayerice.cpp@97036ab72558

media/mtransport/transportlayerice.cpp