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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "tools/ipc_fuzzer/message_replay/replay_process.h"
#include <limits.h>
#include <string>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/posix/global_descriptors.h"
#include "build/build_config.h"
#include "chrome/common/chrome_switches.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/mojo_channel_switches.h"
#include "ipc/ipc_descriptors.h"
#include "ipc/ipc_switches.h"
#include "ipc/mojo/ipc_channel_mojo.h"
#include "mojo/edk/embedder/embedder.h"
#include "mojo/edk/embedder/platform_channel_pair.h"
#if defined(OS_POSIX)
#include "content/public/common/content_descriptors.h"
#endif
namespace ipc_fuzzer {
void InitializeMojo() {
mojo::edk::SetMaxMessageSize(64 * 1024 * 1024);
mojo::edk::Init();
}
void InitializeMojoIPCChannel() {
mojo::edk::ScopedPlatformHandle platform_channel;
#if defined(OS_WIN)
platform_channel =
mojo::edk::PlatformChannelPair::PassClientHandleFromParentProcess(
*base::CommandLine::ForCurrentProcess());
#elif defined(OS_POSIX)
platform_channel.reset(mojo::edk::PlatformHandle(
base::GlobalDescriptors::GetInstance()->Get(kMojoIPCChannel)));
#endif
CHECK(platform_channel.is_valid());
mojo::edk::SetParentPipeHandle(std::move(platform_channel));
}
ReplayProcess::ReplayProcess()
: io_thread_("Chrome_ChildIOThread"),
shutdown_event_(true, false),
message_index_(0) {
}
ReplayProcess::~ReplayProcess() {
channel_.reset();
// Signal this event before shutting down the service process. That way all
// background threads can cleanup.
shutdown_event_.Signal();
io_thread_.Stop();
}
bool ReplayProcess::Initialize(int argc, const char** argv) {
base::CommandLine::Init(argc, argv);
if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kIpcFuzzerTestcase)) {
LOG(ERROR) << "This binary shouldn't be executed directly, "
<< "please use tools/ipc_fuzzer/scripts/play_testcase.py";
return false;
}
// Log to both stderr and file destinations.
logging::SetMinLogLevel(logging::LOG_ERROR);
logging::LoggingSettings settings;
settings.logging_dest = logging::LOG_TO_ALL;
settings.log_file = FILE_PATH_LITERAL("ipc_replay.log");
logging::InitLogging(settings);
// Make sure to initialize Mojo before starting the IO thread.
InitializeMojo();
io_thread_.StartWithOptions(
base::Thread::Options(base::MessageLoop::TYPE_IO, 0));
#if defined(OS_POSIX)
base::GlobalDescriptors* g_fds = base::GlobalDescriptors::GetInstance();
g_fds->Set(kPrimaryIPCChannel,
kPrimaryIPCChannel + base::GlobalDescriptors::kBaseDescriptor);
g_fds->Set(kMojoIPCChannel,
kMojoIPCChannel + base::GlobalDescriptors::kBaseDescriptor);
#endif
mojo_ipc_support_.reset(new IPC::ScopedIPCSupport(io_thread_.task_runner()));
InitializeMojoIPCChannel();
return true;
}
void ReplayProcess::OpenChannel() {
// TODO(morrita): As the adoption of ChannelMojo spreads, this
// criteria has to be updated.
std::string process_type =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessType);
bool should_use_mojo = process_type == switches::kRendererProcess &&
content::ShouldUseMojoChannel();
if (should_use_mojo) {
std::string token =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kMojoChannelToken);
channel_ = IPC::ChannelProxy::Create(
IPC::ChannelMojo::CreateClientFactory(mojo::edk::CreateChildMessagePipe(
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kMojoChannelToken))),
this, io_thread_.task_runner());
} else {
std::string channel_name =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kProcessChannelID);
channel_ =
IPC::ChannelProxy::Create(channel_name, IPC::Channel::MODE_CLIENT, this,
io_thread_.task_runner());
}
}
bool ReplayProcess::OpenTestcase() {
base::FilePath path =
base::CommandLine::ForCurrentProcess()->GetSwitchValuePath(
switches::kIpcFuzzerTestcase);
return MessageFile::Read(path, &messages_);
}
void ReplayProcess::SendNextMessage() {
if (message_index_ >= messages_.size()) {
base::MessageLoop::current()->QuitWhenIdle();
return;
}
// Take next message and release it from vector.
IPC::Message* message = messages_[message_index_];
messages_[message_index_++] = NULL;
if (!channel_->Send(message)) {
LOG(ERROR) << "ChannelProxy::Send() failed after "
<< message_index_ << " messages";
base::MessageLoop::current()->QuitWhenIdle();
}
}
void ReplayProcess::Run() {
timer_.reset(new base::Timer(false, true));
timer_->Start(FROM_HERE,
base::TimeDelta::FromMilliseconds(1),
base::Bind(&ReplayProcess::SendNextMessage,
base::Unretained(this)));
base::MessageLoop::current()->Run();
}
bool ReplayProcess::OnMessageReceived(const IPC::Message& msg) {
return true;
}
void ReplayProcess::OnChannelError() {
LOG(ERROR) << "Channel error, quitting after "
<< message_index_ << " messages";
base::MessageLoop::current()->QuitWhenIdle();
}
} // namespace ipc_fuzzer
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