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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 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/plugins/PluginProcessParent.h"
#include "base/string_util.h"
#include "base/process_util.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIFile.h"
#include "nsIProperties.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/ipc/BrowserProcessSubThread.h"
#include "mozilla/plugins/PluginMessageUtils.h"
#include "mozilla/Telemetry.h"
#include "nsThreadUtils.h"
using std::string;
using std::vector;
using mozilla::ipc::BrowserProcessSubThread;
using mozilla::ipc::GeckoChildProcessHost;
using mozilla::plugins::LaunchCompleteTask;
using mozilla::plugins::PluginProcessParent;
#ifdef XP_WIN
PluginProcessParent::PidSet* PluginProcessParent::sPidSet = nullptr;
#endif
PluginProcessParent::PluginProcessParent(const std::string& aPluginFilePath)
: GeckoChildProcessHost(GeckoProcessType_Plugin),
mPluginFilePath(aPluginFilePath),
mTaskFactory(this),
mMainMsgLoop(MessageLoop::current())
#ifdef XP_WIN
,
mChildPid(0)
#endif
{
}
PluginProcessParent::~PluginProcessParent() {
#ifdef XP_WIN
if (sPidSet && mChildPid) {
sPidSet->RemoveEntry(mChildPid);
if (sPidSet->IsEmpty()) {
delete sPidSet;
sPidSet = nullptr;
}
}
#endif
}
bool PluginProcessParent::Launch(
mozilla::UniquePtr<LaunchCompleteTask> aLaunchCompleteTask,
int32_t aSandboxLevel, bool aIsSandboxLoggingEnabled) {
#if (defined(XP_WIN) || defined(XP_MACOSX)) && defined(MOZ_SANDBOX)
// At present, the Mac Flash plugin sandbox does not support different
// levels and is enabled via a boolean pref or environment variable.
// On Mac, when |aSandboxLevel| is positive, we enable the sandbox.
# if defined(XP_WIN)
mSandboxLevel = aSandboxLevel;
// The sandbox process sometimes needs read access to the plugin file.
if (aSandboxLevel >= 3) {
std::wstring pluginFile(
NS_ConvertUTF8toUTF16(mPluginFilePath.c_str()).get());
mAllowedFilesRead.push_back(pluginFile);
}
# endif // XP_WIN
#else
if (aSandboxLevel != 0) {
MOZ_ASSERT(false,
"Can't enable an NPAPI process sandbox for platform/build.");
}
#endif
mLaunchCompleteTask = std::move(aLaunchCompleteTask);
vector<string> args;
args.push_back(MungePluginDsoPath(mPluginFilePath));
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
if (aSandboxLevel > 0) {
args.push_back("-flashSandboxLevel");
args.push_back(std::to_string(aSandboxLevel));
if (aIsSandboxLoggingEnabled) {
args.push_back("-flashSandboxLogging");
}
}
#elif defined(XP_WIN) && defined(MOZ_SANDBOX)
nsresult rv;
nsCOMPtr<nsIProperties> dirSvc =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
MOZ_ASSERT(false, "Failed to get directory service.");
return false;
}
nsCOMPtr<nsIFile> dir;
rv = dirSvc->Get(NS_APP_PLUGIN_PROCESS_TEMP_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(dir));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to get plugin process temp directory.");
return false;
}
nsAutoString tempDir;
MOZ_ALWAYS_SUCCEEDS(dir->GetPath(tempDir));
args.push_back(NS_ConvertUTF16toUTF8(tempDir).get());
rv =
dirSvc->Get(NS_WIN_APPDATA_DIR, NS_GET_IID(nsIFile), getter_AddRefs(dir));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to get appdata directory.");
return false;
}
nsAutoString appdataDir;
MOZ_ALWAYS_SUCCEEDS(dir->GetPath(appdataDir));
appdataDir.Append(L"\\Adobe\\");
args.push_back(NS_ConvertUTF16toUTF8(appdataDir).get());
#endif
bool result = AsyncLaunch(args);
if (!result) {
mLaunchCompleteTask = nullptr;
}
return result;
}
/**
* This function exists so that we may provide an additional level of
* indirection between the task being posted to main event loop (a
* RunnableMethod) and the launch complete task itself. This is needed
* for cases when both WaitUntilConnected or OnChannel* race to invoke the
* task.
*/
void PluginProcessParent::RunLaunchCompleteTask() {
if (mLaunchCompleteTask) {
mLaunchCompleteTask->Run();
mLaunchCompleteTask = nullptr;
}
}
bool PluginProcessParent::WaitUntilConnected(int32_t aTimeoutMs) {
bool result = GeckoChildProcessHost::WaitUntilConnected(aTimeoutMs);
if (mLaunchCompleteTask) {
if (result) {
mLaunchCompleteTask->SetLaunchSucceeded();
}
RunLaunchCompleteTask();
}
return result;
}
void PluginProcessParent::OnChannelConnected(int32_t peer_pid) {
#ifdef XP_WIN
mChildPid = static_cast<uint32_t>(peer_pid);
if (!sPidSet) {
sPidSet = new PluginProcessParent::PidSet();
}
sPidSet->PutEntry(mChildPid);
#endif
GeckoChildProcessHost::OnChannelConnected(peer_pid);
}
void PluginProcessParent::OnChannelError() {
GeckoChildProcessHost::OnChannelError();
}
bool PluginProcessParent::IsConnected() {
mozilla::MonitorAutoLock lock(mMonitor);
return mProcessState == PROCESS_CONNECTED;
}
bool PluginProcessParent::IsPluginProcessId(base::ProcessId procId) {
#ifdef XP_WIN
MOZ_ASSERT(XRE_IsParentProcess());
return sPidSet && sPidSet->Contains(static_cast<uint32_t>(procId));
#else
NS_ERROR("IsPluginProcessId not available on this platform.");
return false;
#endif
}
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