LCOV - code coverage report
Current view: directory - ipc/glue - ProtocolUtils.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 56 0 0.0 %
Date: 2012-06-02 Functions: 7 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2                 :  * vim: sw=2 ts=8 et :
       3                 :  */
       4                 : /* ***** BEGIN LICENSE BLOCK *****
       5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       6                 :  *
       7                 :  * The contents of this file are subject to the Mozilla Public License Version
       8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       9                 :  * the License. You may obtain a copy of the License at:
      10                 :  * http://www.mozilla.org/MPL/
      11                 :  *
      12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      14                 :  * for the specific language governing rights and limitations under the
      15                 :  * License.
      16                 :  *
      17                 :  * The Original Code is Mozilla Code.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  *   The Mozilla Foundation
      21                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *   Chris Jones <jones.chris.g@gmail.com>
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      29                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : #include "base/process_util.h"
      42                 : 
      43                 : #include "mozilla/ipc/AsyncChannel.h"
      44                 : #include "mozilla/ipc/ProtocolUtils.h"
      45                 : #include "mozilla/ipc/Transport.h"
      46                 : 
      47                 : using namespace base;
      48                 : using namespace IPC;
      49                 : 
      50                 : namespace mozilla {
      51                 : namespace ipc {
      52                 : 
      53                 : class ChannelOpened : public IPC::Message
      54               0 : {
      55                 : public:
      56               0 :   ChannelOpened(TransportDescriptor aDescriptor,
      57                 :                 ProcessId aOtherProcess,
      58                 :                 ProtocolId aProtocol)
      59                 :     : IPC::Message(MSG_ROUTING_CONTROL, // these only go to top-level actors
      60                 :                    CHANNEL_OPENED_MESSAGE_TYPE,
      61               0 :                    PRIORITY_NORMAL)
      62                 :   {
      63               0 :     IPC::WriteParam(this, aDescriptor);
      64               0 :     IPC::WriteParam(this, aOtherProcess);
      65               0 :     IPC::WriteParam(this, static_cast<uint32>(aProtocol));
      66               0 :   }
      67                 : 
      68               0 :   static bool Read(const IPC::Message& aMsg,
      69                 :                    TransportDescriptor* aDescriptor,
      70                 :                    ProcessId* aOtherProcess,
      71                 :                    ProtocolId* aProtocol)
      72                 :   {
      73               0 :     void* iter = nsnull;
      74               0 :     if (!IPC::ReadParam(&aMsg, &iter, aDescriptor) ||
      75               0 :         !IPC::ReadParam(&aMsg, &iter, aOtherProcess) ||
      76               0 :         !IPC::ReadParam(&aMsg, &iter, reinterpret_cast<uint32*>(aProtocol))) {
      77               0 :       return false;
      78                 :     }
      79               0 :     aMsg.EndRead(iter);
      80               0 :     return true;
      81                 :   }
      82                 : };
      83                 : 
      84                 : bool
      85               0 : Bridge(const PrivateIPDLInterface&,
      86                 :        AsyncChannel* aParentChannel, ProcessHandle aParentProcess,
      87                 :        AsyncChannel* aChildChannel, ProcessHandle aChildProcess,
      88                 :        ProtocolId aProtocol)
      89                 : {
      90               0 :   ProcessId parentId = GetProcId(aParentProcess);
      91               0 :   ProcessId childId = GetProcId(aChildProcess);
      92               0 :   if (!parentId || !childId) {
      93               0 :     return false;
      94                 :   }
      95                 : 
      96               0 :   TransportDescriptor parentSide, childSide;
      97               0 :   if (!CreateTransport(aParentProcess, aChildProcess,
      98               0 :                        &parentSide, &childSide)) {
      99               0 :     return false;
     100                 :   }
     101                 : 
     102               0 :   if (!aParentChannel->Send(new ChannelOpened(parentSide,
     103                 :                                               childId,
     104               0 :                                               aProtocol)) ||
     105                 :       !aChildChannel->Send(new ChannelOpened(childSide,
     106                 :                                              parentId,
     107               0 :                                              aProtocol))) {
     108               0 :     CloseDescriptor(parentSide);
     109               0 :     CloseDescriptor(childSide);
     110               0 :     return false;
     111                 :   }
     112               0 :   return true;
     113                 : }
     114                 : 
     115                 : bool
     116               0 : Open(const PrivateIPDLInterface&,
     117                 :      AsyncChannel* aOpenerChannel, ProcessHandle aOtherProcess,
     118                 :      Transport::Mode aOpenerMode,
     119                 :      ProtocolId aProtocol)
     120                 : {
     121               0 :   bool isParent = (Transport::MODE_SERVER == aOpenerMode);
     122               0 :   ProcessHandle thisHandle = GetCurrentProcessHandle();
     123               0 :   ProcessHandle parentHandle = isParent ? thisHandle : aOtherProcess;
     124               0 :   ProcessHandle childHandle = !isParent ? thisHandle : aOtherProcess;
     125               0 :   ProcessId parentId = GetProcId(parentHandle);
     126               0 :   ProcessId childId = GetProcId(childHandle);
     127               0 :   if (!parentId || !childId) {
     128               0 :     return false;
     129                 :   }
     130                 : 
     131               0 :   TransportDescriptor parentSide, childSide;
     132               0 :   if (!CreateTransport(parentHandle, childHandle,
     133               0 :                        &parentSide, &childSide)) {
     134               0 :     return false;
     135                 :   }
     136                 : 
     137               0 :   Message* parentMsg = new ChannelOpened(parentSide, childId, aProtocol);
     138               0 :   Message* childMsg = new ChannelOpened(childSide, parentId, aProtocol);
     139               0 :   nsAutoPtr<Message> messageForUs(isParent ? parentMsg : childMsg);
     140               0 :   nsAutoPtr<Message> messageForOtherSide(!isParent ? parentMsg : childMsg);
     141               0 :   if (!aOpenerChannel->Echo(messageForUs.forget()) ||
     142               0 :       !aOpenerChannel->Send(messageForOtherSide.forget())) {
     143               0 :     CloseDescriptor(parentSide);
     144               0 :     CloseDescriptor(childSide);
     145               0 :     return false;
     146                 :   }
     147               0 :   return true;
     148                 : }
     149                 : 
     150                 : bool
     151               0 : UnpackChannelOpened(const PrivateIPDLInterface&,
     152                 :                     const Message& aMsg,
     153                 :                     TransportDescriptor* aTransport,
     154                 :                     ProcessId* aOtherProcess,
     155                 :                     ProtocolId* aProtocol)
     156                 : {
     157               0 :   return ChannelOpened::Read(aMsg, aTransport, aOtherProcess, aProtocol);
     158                 : }
     159                 : 
     160                 : } // namespace ipc
     161                 : } // namespace mozilla

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