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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "ipc/ipc_channel_proxy.h" | 5 #include "ipc/ipc_channel_proxy.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
| 9 #include "base/location.h" | 9 #include "base/location.h" |
| 10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
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| 297 } | 297 } |
| 298 | 298 |
| 299 // Called on the listener's thread | 299 // Called on the listener's thread |
| 300 void ChannelProxy::Context::OnDispatchBadMessage(const Message& message) { | 300 void ChannelProxy::Context::OnDispatchBadMessage(const Message& message) { |
| 301 if (listener_) | 301 if (listener_) |
| 302 listener_->OnBadMessageReceived(message); | 302 listener_->OnBadMessageReceived(message); |
| 303 } | 303 } |
| 304 | 304 |
| 305 //----------------------------------------------------------------------------- | 305 //----------------------------------------------------------------------------- |
| 306 | 306 |
| 307 // static | 307 ChannelProxy::ChannelProxy(const IPC::ChannelHandle& channel_handle, |
| 308 scoped_ptr<ChannelProxy> ChannelProxy::Create( | 308 Channel::Mode mode, |
| 309 Listener* listener, | 309 Listener* listener, |
| 310 base::SingleThreadTaskRunner* ipc_task_runner) { | 310 base::SingleThreadTaskRunner* ipc_task_runner) |
| 311 return make_scoped_ptr(new ChannelProxy( | 311 : context_(new Context(listener, ipc_task_runner)), |
| 312 listener, ipc_task_runner)); | 312 did_init_(false) { |
| 313 } | 313 Init(channel_handle, mode, true); |
| 314 | |
| 315 // static | |
| 316 scoped_ptr<ChannelProxy> ChannelProxy::CreateClient( | |
| 317 const IPC::ChannelHandle& channel_handle, | |
| 318 Listener* listener, | |
| 319 base::SingleThreadTaskRunner* ipc_task_runner) { | |
| 320 scoped_ptr<ChannelProxy> channel = Create( | |
| 321 listener, ipc_task_runner); | |
| 322 channel->InitClient(channel_handle, true); | |
| 323 return channel.Pass(); | |
| 324 } | |
| 325 | |
| 326 // static | |
| 327 scoped_ptr<ChannelProxy> ChannelProxy::CreateServer( | |
| 328 const IPC::ChannelHandle& channel_handle, | |
| 329 Listener* listener, | |
| 330 base::SingleThreadTaskRunner* ipc_task_runner) { | |
| 331 scoped_ptr<ChannelProxy> channel = Create( | |
| 332 listener, ipc_task_runner); | |
| 333 channel->InitServer(channel_handle, true); | |
| 334 return channel.Pass(); | |
| 335 } | |
| 336 | |
| 337 // static | |
| 338 scoped_ptr<ChannelProxy> ChannelProxy::CreateNamedClient( | |
| 339 const IPC::ChannelHandle& channel_handle, | |
| 340 Listener* listener, | |
| 341 base::SingleThreadTaskRunner* ipc_task_runner) { | |
| 342 scoped_ptr<ChannelProxy> channel = Create( | |
| 343 listener, ipc_task_runner); | |
| 344 channel->InitNamedClient(channel_handle, true); | |
| 345 return channel.Pass(); | |
| 346 } | |
| 347 | |
| 348 // static | |
| 349 scoped_ptr<ChannelProxy> ChannelProxy::CreateNamedServer( | |
| 350 const IPC::ChannelHandle& channel_handle, | |
| 351 Listener* listener, | |
| 352 base::SingleThreadTaskRunner* ipc_task_runner) { | |
| 353 scoped_ptr<ChannelProxy> channel = Create( | |
| 354 listener, ipc_task_runner); | |
| 355 channel->InitNamedServer(channel_handle, true); | |
| 356 return channel.Pass(); | |
| 357 } | 314 } |
| 358 | 315 |
| 359 ChannelProxy::ChannelProxy(Context* context) | 316 ChannelProxy::ChannelProxy(Context* context) |
| 360 : context_(context), | 317 : context_(context), |
| 361 did_init_(false) { | 318 did_init_(false) { |
| 362 } | 319 } |
| 363 | 320 |
| 364 ChannelProxy::ChannelProxy(Listener* listener, | |
| 365 base::SingleThreadTaskRunner* ipc_task_runner) | |
| 366 : context_(new Context(listener, ipc_task_runner)), | |
| 367 did_init_(false) { | |
| 368 } | |
| 369 | |
| 370 ChannelProxy::~ChannelProxy() { | 321 ChannelProxy::~ChannelProxy() { |
| 371 DCHECK(CalledOnValidThread()); | 322 DCHECK(CalledOnValidThread()); |
| 372 | 323 |
| 373 Close(); | 324 Close(); |
| 374 } | 325 } |
| 375 | 326 |
| 376 void ChannelProxy::InitByMode( | 327 void ChannelProxy::Init(const IPC::ChannelHandle& channel_handle, |
| 377 const IPC::ChannelHandle& channel_handle, | 328 Channel::Mode mode, |
| 378 Channel::Mode mode, | 329 bool create_pipe_now) { |
| 379 bool create_pipe_now) { | |
| 380 DCHECK(CalledOnValidThread()); | 330 DCHECK(CalledOnValidThread()); |
| 381 DCHECK(!did_init_); | 331 DCHECK(!did_init_); |
| 382 #if defined(OS_POSIX) | 332 #if defined(OS_POSIX) |
| 383 // When we are creating a server on POSIX, we need its file descriptor | 333 // When we are creating a server on POSIX, we need its file descriptor |
| 384 // to be created immediately so that it can be accessed and passed | 334 // to be created immediately so that it can be accessed and passed |
| 385 // to other processes. Forcing it to be created immediately avoids | 335 // to other processes. Forcing it to be created immediately avoids |
| 386 // race conditions that may otherwise arise. | 336 // race conditions that may otherwise arise. |
| 387 if (mode & Channel::MODE_SERVER_FLAG) { | 337 if (mode & Channel::MODE_SERVER_FLAG) { |
| 388 create_pipe_now = true; | 338 create_pipe_now = true; |
| 389 } | 339 } |
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| 401 channel_handle, mode)); | 351 channel_handle, mode)); |
| 402 } | 352 } |
| 403 | 353 |
| 404 // complete initialization on the background thread | 354 // complete initialization on the background thread |
| 405 context_->ipc_task_runner()->PostTask( | 355 context_->ipc_task_runner()->PostTask( |
| 406 FROM_HERE, base::Bind(&Context::OnChannelOpened, context_.get())); | 356 FROM_HERE, base::Bind(&Context::OnChannelOpened, context_.get())); |
| 407 | 357 |
| 408 did_init_ = true; | 358 did_init_ = true; |
| 409 } | 359 } |
| 410 | 360 |
| 411 void ChannelProxy::InitClient(const IPC::ChannelHandle& channel_handle, | |
| 412 bool create_pipe_now) { | |
| 413 InitByMode(channel_handle, Channel::MODE_CLIENT, create_pipe_now); | |
| 414 } | |
| 415 | |
| 416 void ChannelProxy::InitServer(const IPC::ChannelHandle& channel_handle, | |
| 417 bool create_pipe_now) { | |
| 418 InitByMode(channel_handle, Channel::MODE_SERVER, create_pipe_now); | |
| 419 } | |
| 420 | |
| 421 void ChannelProxy::InitNamedClient(const IPC::ChannelHandle& channel_handle, | |
| 422 bool create_pipe_now) { | |
| 423 InitByMode(channel_handle, Channel::MODE_NAMED_CLIENT, create_pipe_now); | |
| 424 } | |
| 425 | |
| 426 void ChannelProxy::InitNamedServer(const IPC::ChannelHandle& channel_handle, | |
| 427 bool create_pipe_now) { | |
| 428 InitByMode(channel_handle, Channel::MODE_NAMED_SERVER, create_pipe_now); | |
| 429 } | |
| 430 | |
| 431 void ChannelProxy::Close() { | 361 void ChannelProxy::Close() { |
| 432 DCHECK(CalledOnValidThread()); | 362 DCHECK(CalledOnValidThread()); |
| 433 | 363 |
| 434 // Clear the backpointer to the listener so that any pending calls to | 364 // Clear the backpointer to the listener so that any pending calls to |
| 435 // Context::OnDispatchMessage or OnDispatchError will be ignored. It is | 365 // Context::OnDispatchMessage or OnDispatchError will be ignored. It is |
| 436 // possible that the channel could be closed while it is receiving messages! | 366 // possible that the channel could be closed while it is receiving messages! |
| 437 context_->Clear(); | 367 context_->Clear(); |
| 438 | 368 |
| 439 if (context_->ipc_task_runner()) { | 369 if (context_->ipc_task_runner()) { |
| 440 context_->ipc_task_runner()->PostTask( | 370 context_->ipc_task_runner()->PostTask( |
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| 506 Channel* channel = context_.get()->channel_.get(); | 436 Channel* channel = context_.get()->channel_.get(); |
| 507 // Channel must have been created first. | 437 // Channel must have been created first. |
| 508 DCHECK(channel) << context_.get()->channel_id_; | 438 DCHECK(channel) << context_.get()->channel_id_; |
| 509 return channel->GetPeerEuid(peer_euid); | 439 return channel->GetPeerEuid(peer_euid); |
| 510 } | 440 } |
| 511 #endif | 441 #endif |
| 512 | 442 |
| 513 //----------------------------------------------------------------------------- | 443 //----------------------------------------------------------------------------- |
| 514 | 444 |
| 515 } // namespace IPC | 445 } // namespace IPC |
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