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; } return mPlugin.Init(pluginFilename, ParentHandle(), IOThreadChild::message_loop(), IOThreadChild::channel()); }
bool PluginProcessChild::Init() { nsDebugImpl::SetMultiprocessMode("NPAPI"); #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(); MOZ_ASSERT(values.size() >= 2, "not enough args"); pluginFilename = UnmungePluginDsoPath(values[1]); #elif defined(OS_WIN) std::vector<std::wstring> values = CommandLine::ForCurrentProcess()->GetLooseValues(); MOZ_ASSERT(values.size() >= 1, "not enough loose args"); if (ShouldProtectPluginCurrentDirectory(values[0].c_str())) { SanitizeEnvironmentVariables(); SetDllDirectory(L""); } pluginFilename = WideToUTF8(values[0]); #if defined(MOZ_SANDBOX) // This is probably the earliest we would want to start the sandbox. // As we attempt to tighten the sandbox, we may need to consider moving this // to later in the plugin initialization. mozilla::SandboxTarget::Instance()->StartSandbox(); #endif #else # error Sorry #endif if (NS_FAILED(nsRegion::InitStatic())) { NS_ERROR("Could not initialize nsRegion"); return false; } bool retval = mPlugin.InitForChrome(pluginFilename, ParentPid(), 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; }