gecko/dom/plugins/ipc/PluginProcessChild.cpp
2011-10-17 10:59:28 -04:00

180 lines
6.1 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: sw=4 ts=4 et :
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Plugin App.
*
* The Initial Developer of the Original Code is
* Ben Turner <bent.mozilla@gmail.com>.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Jones <jones.chris.g@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/ipc/IOThreadChild.h"
#include "mozilla/plugins/PluginProcessChild.h"
#include "prlink.h"
#include "base/command_line.h"
#include "base/string_util.h"
#include "chrome/common/chrome_switches.h"
#ifdef XP_WIN
#include <objbase.h>
#endif
using mozilla::ipc::IOThreadChild;
#ifdef OS_WIN
#include "nsSetDllDirectory.h"
#include <algorithm>
namespace {
std::size_t caseInsensitiveFind(std::string aHaystack, std::string aNeedle) {
std::transform(aHaystack.begin(), aHaystack.end(), aHaystack.begin(), ::tolower);
std::transform(aNeedle.begin(), aNeedle.end(), aNeedle.begin(), ::tolower);
return aHaystack.find(aNeedle);
}
}
#endif
namespace mozilla {
namespace plugins {
bool
PluginProcessChild::Init()
{
#if defined(XP_MACOSX)
// Remove the trigger for "dyld interposing" that we added in
// GeckoChildProcessHost::PerformAsyncLaunchInternal(), in the host
// process just before we were launched. Dyld interposing will still
// happen in our process (the plugin child process). But we don't want
// it to happen in any processes that the plugin might launch from our
// process.
nsCString interpose(PR_GetEnv("DYLD_INSERT_LIBRARIES"));
if (!interpose.IsEmpty()) {
// If we added the path to libplugin_child_interpose.dylib to an
// existing DYLD_INSERT_LIBRARIES, we appended it to the end, after a
// ":" path seperator.
PRInt32 lastSeparatorPos = interpose.RFind(":");
PRInt32 lastTriggerPos = interpose.RFind("libplugin_child_interpose.dylib");
bool needsReset = false;
if (lastTriggerPos != -1) {
if (lastSeparatorPos == -1) {
interpose.Truncate();
needsReset = true;
} else if (lastTriggerPos > lastSeparatorPos) {
interpose.SetLength(lastSeparatorPos);
needsReset = true;
}
}
if (needsReset) {
nsCString setInterpose("DYLD_INSERT_LIBRARIES=");
if (!interpose.IsEmpty()) {
setInterpose.Append(interpose);
}
// Values passed to PR_SetEnv() must be seperately allocated.
char* setInterposePtr = strdup(PromiseFlatCString(setInterpose).get());
PR_SetEnv(setInterposePtr);
}
}
#endif
#ifdef XP_WIN
// Drag-and-drop needs OleInitialize to be called, and Silverlight depends
// on the host calling CoInitialize (which is called by OleInitialize).
::OleInitialize(NULL);
#endif
// Certain plugins, such as flash, steal the unhandled exception filter
// thus we never get crash reports when they fault. This call fixes it.
message_loop()->set_exception_restoration(true);
std::string pluginFilename;
#if defined(OS_POSIX)
// NB: need to be very careful in ensuring that the first arg
// (after the binary name) here is indeed the plugin module path.
// Keep in sync with dom/plugins/PluginModuleParent.
std::vector<std::string> values = CommandLine::ForCurrentProcess()->argv();
NS_ABORT_IF_FALSE(values.size() >= 2, "not enough args");
pluginFilename = UnmungePluginDsoPath(values[1]);
#elif defined(OS_WIN)
std::vector<std::wstring> values =
CommandLine::ForCurrentProcess()->GetLooseValues();
NS_ABORT_IF_FALSE(values.size() >= 1, "not enough loose args");
pluginFilename = WideToUTF8(values[0]);
bool protectCurrentDirectory = true;
// Don't use SetDllDirectory for Shockwave Director
const std::string shockwaveDirectorPluginFilename("\\np32dsw.dll");
std::size_t index = caseInsensitiveFind(pluginFilename, shockwaveDirectorPluginFilename);
if (index != std::string::npos &&
index + shockwaveDirectorPluginFilename.length() == pluginFilename.length()) {
protectCurrentDirectory = false;
}
if (protectCurrentDirectory) {
SanitizeEnvironmentVariables();
NS_SetDllDirectory(L"");
}
#else
# error Sorry
#endif
if (NS_FAILED(nsRegion::InitStatic())) {
NS_ERROR("Could not initialize nsRegion");
return false;
}
mPlugin.Init(pluginFilename, ParentHandle(),
IOThreadChild::message_loop(),
IOThreadChild::channel());
return true;
}
void
PluginProcessChild::CleanUp()
{
#ifdef XP_WIN
::OleUninitialize();
#endif
nsRegion::ShutdownStatic();
}
} // namespace plugins
} // namespace mozilla