dom/plugins/PluginProcessChild.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * vim: sw=4 ts=4 et :
   3  * ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is Mozilla Plugin App.
  17  *
  18  * The Initial Developer of the Original Code is
  19  *   Ben Turner <bent.mozilla@gmail.com>.
  20  * Portions created by the Initial Developer are Copyright (C) 2009
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Chris Jones <jones.chris.g@gmail.com>
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either the GNU General Public License Version 2 or later (the "GPL"), or
  28  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29  * in which case the provisions of the GPL or the LGPL are applicable instead
  30  * of those above. If you wish to allow use of your version of this file only
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  34  * and other provisions required by the GPL or the LGPL. If you do not delete
  35  * the provisions above, a recipient may use your version of this file under
  36  * the terms of any one of the MPL, the GPL or the LGPL.
  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40 #include "mozilla/ipc/IOThreadChild.h"
  41 #include "mozilla/plugins/PluginProcessChild.h"
  42
  43 #include "prlink.h"
  44
  45 #include "base/command_line.h"
  46 #include "base/string_util.h"
  47 #include "chrome/common/chrome_switches.h"
  48
  49 #ifdef XP_WIN
  50 #include <objbase.h>
  51 #endif
  52
  53 using mozilla::ipc::IOThreadChild;
  54
  55 #ifdef OS_WIN
  56 #include "nsSetDllDirectory.h"
  57 #include <algorithm>
  58
  59 namespace {
  60
  61 std::size_t caseInsensitiveFind(std::string aHaystack, std::string aNeedle) {
  62     std::transform(aHaystack.begin(), aHaystack.end(), aHaystack.begin(), ::tolower);
  63     std::transform(aNeedle.begin(), aNeedle.end(), aNeedle.begin(), ::tolower);
  64     return aHaystack.find(aNeedle);
  65 }
  66
  67 }
  68 #endif
  69
  70 namespace mozilla {
  71 namespace plugins {
  72
  73 bool
  74 PluginProcessChild::Init()
  75 {
  76 #ifdef XP_WIN
  77     // Drag-and-drop needs OleInitialize to be called, and Silverlight depends
  78     // on the host calling CoInitialize (which is called by OleInitialize).
  79     ::OleInitialize(NULL);
  80 #endif
  81
  82     // Certain plugins, such as flash, steal the unhandled exception filter
  83     // thus we never get crash reports when they fault. This call fixes it.
  84     message_loop()->set_exception_restoration(true);
  85
  86     std::string pluginFilename;
  87
  88 #if defined(OS_POSIX)
  89     // NB: need to be very careful in ensuring that the first arg
  90     // (after the binary name) here is indeed the plugin module path.
  91     // Keep in sync with dom/plugins/PluginModuleParent.
  92     std::vector<std::string> values = CommandLine::ForCurrentProcess()->argv();
  93     NS_ABORT_IF_FALSE(values.size() >= 2, "not enough args");
  94
  95     pluginFilename = UnmungePluginDsoPath(values[1]);
  96
  97 #elif defined(OS_WIN)
  98     std::vector<std::wstring> values =
  99         CommandLine::ForCurrentProcess()->GetLooseValues();
 100     NS_ABORT_IF_FALSE(values.size() >= 1, "not enough loose args");
 101
 102     pluginFilename = WideToUTF8(values[0]);
 103
 104     bool protectCurrentDirectory = true;
 105     // Don't use SetDllDirectory for Shockwave Director
 106     const std::string shockwaveDirectorPluginFilename("\\np32dsw.dll");
 107     std::size_t index = caseInsensitiveFind(pluginFilename, shockwaveDirectorPluginFilename);
 108     if (index != std::string::npos &&
 109         index + shockwaveDirectorPluginFilename.length() == pluginFilename.length()) {
 110         protectCurrentDirectory = false;
 111     }
 112     if (protectCurrentDirectory) {
 113         NS_SetDllDirectory(L"");
 114     }
 115
 116 #else
 117 #  error Sorry
 118 #endif
 119
 120     if (NS_FAILED(nsRegion::InitStatic())) {
 121       NS_ERROR("Could not initialize nsRegion");
 122       return false;
 123     }
 124
 125     mPlugin.Init(pluginFilename, ParentHandle(),
 126                  IOThreadChild::message_loop(),
 127                  IOThreadChild::channel());
 128
 129     return true;
 130 }
 131
 132 void
 133 PluginProcessChild::CleanUp()
 134 {
 135 #ifdef XP_WIN
 136     ::OleUninitialize();
 137 #endif
 138     nsRegion::ShutdownStatic();
 139 }
 140
 141 /* static */
 142 void
 143 PluginProcessChild::AppendNotesToCrashReport(const nsCString& aNotes)
 144 {
 145     AssertPluginThread();
 146
 147     PluginProcessChild* p = PluginProcessChild::current();
 148     if (p) {
 149         p->mPlugin.SendAppendNotesToCrashReport(aNotes);
 150     }
 151 }
 152
 153 } // namespace plugins
 154 } // namespace mozilla