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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/proxy_channel.h"
#include "base/logging.h"
#include "base/task/single_thread_task_runner.h"
#include "build/build_config.h"
#include "ipc/ipc_platform_file.h"
#include "ipc/ipc_sender.h"
#if BUILDFLAG(IS_NACL)
#include <unistd.h>
#endif
namespace ppapi {
namespace proxy {
ProxyChannel::ProxyChannel()
: delegate_(NULL),
peer_pid_(base::kNullProcessId),
test_sink_(NULL) {
}
ProxyChannel::~ProxyChannel() {
DVLOG(1) << "ProxyChannel::~ProxyChannel()";
}
bool ProxyChannel::InitWithChannel(
Delegate* delegate,
base::ProcessId peer_pid,
const IPC::ChannelHandle& channel_handle,
bool is_client,
scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
delegate_ = delegate;
peer_pid_ = peer_pid;
IPC::Channel::Mode mode = is_client
? IPC::Channel::MODE_CLIENT
: IPC::Channel::MODE_SERVER;
DCHECK(task_runner->BelongsToCurrentThread());
channel_ = IPC::SyncChannel::Create(channel_handle, mode, this,
delegate->GetIPCTaskRunner(), task_runner,
true, delegate->GetShutdownEvent());
return true;
}
void ProxyChannel::InitWithTestSink(IPC::Sender* sender) {
DCHECK(!test_sink_);
test_sink_ = sender;
#if !BUILDFLAG(IS_NACL)
peer_pid_ = base::GetCurrentProcId();
#endif
}
void ProxyChannel::OnChannelError() {
channel_.reset();
}
IPC::PlatformFileForTransit ProxyChannel::ShareHandleWithRemote(
base::PlatformFile handle,
bool should_close_source) {
// Channel could be closed if the plugin crashes.
if (!channel_.get()) {
if (should_close_source) {
base::File file_closer(handle);
}
return IPC::InvalidPlatformFileForTransit();
}
DCHECK(peer_pid_ != base::kNullProcessId);
return delegate_->ShareHandleWithRemote(handle, peer_pid_,
should_close_source);
}
base::UnsafeSharedMemoryRegion
ProxyChannel::ShareUnsafeSharedMemoryRegionWithRemote(
const base::UnsafeSharedMemoryRegion& region) {
if (!channel_.get())
return base::UnsafeSharedMemoryRegion();
DCHECK(peer_pid_ != base::kNullProcessId);
return delegate_->ShareUnsafeSharedMemoryRegionWithRemote(region, peer_pid_);
}
base::ReadOnlySharedMemoryRegion
ProxyChannel::ShareReadOnlySharedMemoryRegionWithRemote(
const base::ReadOnlySharedMemoryRegion& region) {
if (!channel_.get())
return base::ReadOnlySharedMemoryRegion();
DCHECK(peer_pid_ != base::kNullProcessId);
return delegate_->ShareReadOnlySharedMemoryRegionWithRemote(region,
peer_pid_);
}
bool ProxyChannel::Send(IPC::Message* msg) {
if (test_sink_)
return test_sink_->Send(msg);
if (channel_.get())
return channel_->Send(msg);
// Remote side crashed, drop this message.
delete msg;
return false;
}
} // namespace proxy
} // namespace ppapi
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