| // 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 "chrome/browser/media_galleries/fileapi/safe_audio_video_checker.h" |
| |
| #include "base/bind.h" |
| #include "base/callback.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/process/process_handle.h" |
| #include "chrome/common/chrome_utility_messages.h" |
| #include "content/public/browser/child_process_data.h" |
| #include "content/public/browser/utility_process_host.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "ipc/ipc_message_macros.h" |
| #include "ipc/ipc_platform_file.h" |
| |
| SafeAudioVideoChecker::SafeAudioVideoChecker( |
| const base::PlatformFile& file, |
| const fileapi::CopyOrMoveFileValidator::ResultCallback& callback) |
| : state_(INITIAL_STATE), |
| file_(file), |
| file_closer_(&file_), |
| callback_(callback) { |
| DCHECK(!callback.is_null()); |
| } |
| |
| void SafeAudioVideoChecker::Start() { |
| DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO)); |
| if (state_ != INITIAL_STATE) |
| return; |
| state_ = PINGED_STATE; |
| |
| DCHECK(file_closer_); |
| if (*file_closer_.get() == base::kInvalidPlatformFileValue) { |
| callback_.Run(base::PLATFORM_FILE_ERROR_SECURITY); |
| state_ = FINISHED_STATE; |
| return; |
| } |
| |
| utility_process_host_ = content::UtilityProcessHost::Create( |
| this, base::MessageLoopProxy::current())->AsWeakPtr(); |
| utility_process_host_->Send(new ChromeUtilityMsg_StartupPing); |
| } |
| |
| SafeAudioVideoChecker::~SafeAudioVideoChecker() {} |
| |
| void SafeAudioVideoChecker::OnProcessStarted() { |
| DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO)); |
| if (state_ != PINGED_STATE) |
| return; |
| state_ = STARTED_STATE; |
| |
| if (utility_process_host_->GetData().handle == base::kNullProcessHandle) |
| DLOG(ERROR) << "Child process handle is null"; |
| IPC::PlatformFileForTransit file_for_transit = |
| IPC::GetFileHandleForProcess(*file_closer_.release(), |
| utility_process_host_->GetData().handle, |
| true /* close_source_handle */); |
| const int64 kFileDecodeTimeInMS = 250; |
| utility_process_host_->Send(new ChromeUtilityMsg_CheckMediaFile( |
| kFileDecodeTimeInMS, file_for_transit)); |
| } |
| |
| void SafeAudioVideoChecker::OnCheckingFinished(bool valid) { |
| DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO)); |
| if (state_ != STARTED_STATE) |
| return; |
| state_ = FINISHED_STATE; |
| |
| callback_.Run(valid ? base::PLATFORM_FILE_OK |
| : base::PLATFORM_FILE_ERROR_SECURITY); |
| } |
| |
| void SafeAudioVideoChecker::OnProcessCrashed(int exit_code) { |
| OnCheckingFinished(false); |
| } |
| |
| bool SafeAudioVideoChecker::OnMessageReceived(const IPC::Message& message) { |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP(SafeAudioVideoChecker, message) |
| IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ProcessStarted, |
| OnProcessStarted) |
| IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_CheckMediaFile_Finished, |
| OnCheckingFinished) |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP() |
| return handled; |
| } |