The Tor Browser: dom/plugins/ipc/PluginProcessChild.cpp@6474c204b198 (annotated)

dom/plugins/ipc/PluginProcessChild.cpp@6474c204b198 (annotated)

dom/plugins/ipc/PluginProcessChild.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * vim: sw=4 ts=4 et :
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #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"
 #if defined(XP_MACOSX)
 #include "nsCocoaFeatures.h"
 // An undocumented CoreGraphics framework method, present in the same form
 // since at least OS X 10.5.
 extern "C" CGError CGSSetDebugOptions(int options);
 #endif
 #ifdef XP_WIN
 #include <objbase.h>
 bool ShouldProtectPluginCurrentDirectory(char16ptr_t pluginFilePath);
 #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.
         int32_t lastSeparatorPos = interpose.RFind(":");
         int32_t 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(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(nullptr);
 #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");
     if (ShouldProtectPluginCurrentDirectory(values[0].c_str())) {
         SanitizeEnvironmentVariables();
         SetDllDirectory(L"");
     }
     pluginFilename = WideToUTF8(values[0]);
 #else
 #  error Sorry
 #endif
     if (NS_FAILED(nsRegion::InitStatic())) {
       NS_ERROR("Could not initialize nsRegion");
       return false;
     }
     bool retval = mPlugin.Init(pluginFilename, ParentHandle(),
                                IOThreadChild::message_loop(),
                                IOThreadChild::channel());
 #if defined(XP_MACOSX)
     if (nsCocoaFeatures::OnYosemiteOrLater()) {
       // Explicitly turn off CGEvent logging.  This works around bug 1092855.
       // If there are already CGEvents in the log, turning off logging also
       // causes those events to be written to disk.  But at this point no
       // CGEvents have yet been processed.  CGEvents are events (usually
       // input events) pulled from the WindowServer.  An option of 0x80000008
       // turns on CGEvent logging.
       CGSSetDebugOptions(0x80000007);
     }
 #endif
     return retval;
 }
 void
 PluginProcessChild::CleanUp()
 {
 #ifdef XP_WIN
     ::OleUninitialize();
 #endif
     nsRegion::ShutdownStatic();
 }
 } // namespace plugins
 } // namespace mozilla

The Tor Browser / annotate

dom/plugins/ipc/PluginProcessChild.cpp@6474c204b198 (annotated)

dom/plugins/ipc/PluginProcessChild.cpp