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/* -*- 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/plugins/PluginProcessParent.h"
#include "base/string_util.h"
#include "base/process_util.h"
#include "mozilla/ipc/BrowserProcessSubThread.h"
#include "mozilla/plugins/PluginMessageUtils.h"
#include "mozilla/Telemetry.h"
#include "nsThreadUtils.h"
#if defined(XP_WIN) && defined(MOZ_SANDBOX)
#include "nsDirectoryServiceDefs.h"
#endif
using std::vector;
using std::string;
using mozilla::ipc::BrowserProcessSubThread;
using mozilla::ipc::GeckoChildProcessHost;
using mozilla::plugins::LaunchCompleteTask;
using mozilla::plugins::PluginProcessParent;
using base::ProcessArchitecture;
PluginProcessParent::PluginProcessParent(const std::string& aPluginFilePath) :
GeckoChildProcessHost(GeckoProcessType_Plugin),
mPluginFilePath(aPluginFilePath),
mTaskFactory(this),
mMainMsgLoop(MessageLoop::current()),
mRunCompleteTaskImmediately(false)
{
}
PluginProcessParent::~PluginProcessParent()
{
}
#if defined(XP_WIN) && defined(MOZ_SANDBOX)
static void
AddSandboxAllowedFile(vector<std::wstring>& aAllowedFiles, nsIProperties* aDirSvc,
const char* aDir, const nsAString& aSuffix = EmptyString())
{
nsCOMPtr<nsIFile> userDir;
nsresult rv = aDirSvc->Get(aDir, NS_GET_IID(nsIFile), getter_AddRefs(userDir));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
nsAutoString userDirPath;
rv = userDir->GetPath(userDirPath);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
if (!aSuffix.IsEmpty()) {
userDirPath.Append(aSuffix);
}
aAllowedFiles.push_back(std::wstring(userDirPath.get()));
return;
}
static void
AddSandboxAllowedFiles(int32_t aSandboxLevel,
vector<std::wstring>& aAllowedFilesRead,
vector<std::wstring>& aAllowedFilesReadWrite,
vector<std::wstring>& aAllowedDirectories)
{
if (aSandboxLevel < 2) {
return;
}
nsresult rv;
nsCOMPtr<nsIProperties> dirSvc =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Higher than level 2 currently removes the users own rights.
if (aSandboxLevel > 2) {
AddSandboxAllowedFile(aAllowedFilesRead, dirSvc, NS_WIN_HOME_DIR);
AddSandboxAllowedFile(aAllowedFilesRead, dirSvc, NS_WIN_HOME_DIR,
NS_LITERAL_STRING("\\*"));
}
// Level 2 and above is now using low integrity, so we need to give write
// access to the Flash directories.
// This should be made Flash specific (Bug 1171396).
AddSandboxAllowedFile(aAllowedFilesReadWrite, dirSvc, NS_WIN_APPDATA_DIR,
NS_LITERAL_STRING("\\Macromedia\\Flash Player\\*"));
AddSandboxAllowedFile(aAllowedFilesReadWrite, dirSvc, NS_WIN_LOCAL_APPDATA_DIR,
NS_LITERAL_STRING("\\Macromedia\\Flash Player\\*"));
AddSandboxAllowedFile(aAllowedFilesReadWrite, dirSvc, NS_WIN_APPDATA_DIR,
NS_LITERAL_STRING("\\Adobe\\Flash Player\\*"));
// Access also has to be given to create the parent directories as they may
// not exist.
AddSandboxAllowedFile(aAllowedDirectories, dirSvc, NS_WIN_APPDATA_DIR,
NS_LITERAL_STRING("\\Macromedia"));
AddSandboxAllowedFile(aAllowedDirectories, dirSvc, NS_WIN_APPDATA_DIR,
NS_LITERAL_STRING("\\Macromedia\\Flash Player"));
AddSandboxAllowedFile(aAllowedDirectories, dirSvc, NS_WIN_LOCAL_APPDATA_DIR,
NS_LITERAL_STRING("\\Macromedia"));
AddSandboxAllowedFile(aAllowedDirectories, dirSvc, NS_WIN_LOCAL_APPDATA_DIR,
NS_LITERAL_STRING("\\Macromedia\\Flash Player"));
AddSandboxAllowedFile(aAllowedDirectories, dirSvc, NS_WIN_APPDATA_DIR,
NS_LITERAL_STRING("\\Adobe"));
AddSandboxAllowedFile(aAllowedDirectories, dirSvc, NS_WIN_APPDATA_DIR,
NS_LITERAL_STRING("\\Adobe\\Flash Player"));
}
#endif
bool
PluginProcessParent::Launch(mozilla::UniquePtr<LaunchCompleteTask> aLaunchCompleteTask,
int32_t aSandboxLevel)
{
#if defined(XP_WIN) && defined(MOZ_SANDBOX)
mSandboxLevel = aSandboxLevel;
AddSandboxAllowedFiles(mSandboxLevel, mAllowedFilesRead,
mAllowedFilesReadWrite, mAllowedDirectories);
#else
if (aSandboxLevel != 0) {
MOZ_ASSERT(false,
"Can't enable an NPAPI process sandbox for platform/build.");
}
#endif
ProcessArchitecture currentArchitecture = base::GetCurrentProcessArchitecture();
uint32_t containerArchitectures = GetSupportedArchitecturesForProcessType(GeckoProcessType_Plugin);
uint32_t pluginLibArchitectures = currentArchitecture;
#ifdef XP_MACOSX
nsresult rv = GetArchitecturesForBinary(mPluginFilePath.c_str(), &pluginLibArchitectures);
if (NS_FAILED(rv)) {
// If the call failed just assume that we want the current architecture.
pluginLibArchitectures = currentArchitecture;
}
#endif
ProcessArchitecture selectedArchitecture = currentArchitecture;
if (!(pluginLibArchitectures & containerArchitectures & currentArchitecture)) {
// Prefererence in order: x86_64, i386, PPC. The only particularly important thing
// about this order is that we'll prefer 64-bit architectures first.
if (base::PROCESS_ARCH_X86_64 & pluginLibArchitectures & containerArchitectures) {
selectedArchitecture = base::PROCESS_ARCH_X86_64;
}
else if (base::PROCESS_ARCH_I386 & pluginLibArchitectures & containerArchitectures) {
selectedArchitecture = base::PROCESS_ARCH_I386;
}
else if (base::PROCESS_ARCH_PPC & pluginLibArchitectures & containerArchitectures) {
selectedArchitecture = base::PROCESS_ARCH_PPC;
}
else if (base::PROCESS_ARCH_ARM & pluginLibArchitectures & containerArchitectures) {
selectedArchitecture = base::PROCESS_ARCH_ARM;
}
else if (base::PROCESS_ARCH_MIPS & pluginLibArchitectures & containerArchitectures) {
selectedArchitecture = base::PROCESS_ARCH_MIPS;
}
else {
return false;
}
}
mLaunchCompleteTask = mozilla::Move(aLaunchCompleteTask);
vector<string> args;
args.push_back(MungePluginDsoPath(mPluginFilePath));
bool result = AsyncLaunch(args, selectedArchitecture);
if (!result) {
mLaunchCompleteTask = nullptr;
}
return result;
}
void
PluginProcessParent::Delete()
{
MessageLoop* currentLoop = MessageLoop::current();
MessageLoop* ioLoop = XRE_GetIOMessageLoop();
if (currentLoop == ioLoop) {
delete this;
return;
}
ioLoop->PostTask(NewNonOwningRunnableMethod(this, &PluginProcessParent::Delete));
}
void
PluginProcessParent::SetCallRunnableImmediately(bool aCallImmediately)
{
mRunCompleteTaskImmediately = aCallImmediately;
}
/**
* 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 (mRunCompleteTaskImmediately && mLaunchCompleteTask) {
if (result) {
mLaunchCompleteTask->SetLaunchSucceeded();
}
RunLaunchCompleteTask();
}
return result;
}
void
PluginProcessParent::OnChannelConnected(int32_t peer_pid)
{
GeckoChildProcessHost::OnChannelConnected(peer_pid);
if (mLaunchCompleteTask && !mRunCompleteTaskImmediately) {
mLaunchCompleteTask->SetLaunchSucceeded();
mMainMsgLoop->PostTask(mTaskFactory.NewRunnableMethod(
&PluginProcessParent::RunLaunchCompleteTask));
}
}
void
PluginProcessParent::OnChannelError()
{
GeckoChildProcessHost::OnChannelError();
if (mLaunchCompleteTask && !mRunCompleteTaskImmediately) {
mMainMsgLoop->PostTask(mTaskFactory.NewRunnableMethod(
&PluginProcessParent::RunLaunchCompleteTask));
}
}
bool
PluginProcessParent::IsConnected()
{
mozilla::MonitorAutoLock lock(mMonitor);
return mProcessState == PROCESS_CONNECTED;
}
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