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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 "chrome/browser/media_galleries/fileapi/safe_iapps_library_parser.h"
#include "chrome/browser/media_galleries/fileapi/media_file_system_backend.h"
#include "chrome/common/chrome_utility_messages.h"
#include "chrome/common/extensions/chrome_utility_extensions_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_data.h"
#include "ipc/ipc_platform_file.h"
using content::BrowserThread;
using content::UtilityProcessHost;
namespace iapps {
SafeIAppsLibraryParser::SafeIAppsLibraryParser()
: parser_state_(INITIAL_STATE) {}
void SafeIAppsLibraryParser::ParseIPhotoLibrary(
const base::FilePath& library_file,
const IPhotoParserCallback& callback) {
library_file_path_ = library_file;
iphoto_callback_ = callback;
Start();
}
void SafeIAppsLibraryParser::ParseITunesLibrary(
const base::FilePath& library_file,
const ITunesParserCallback& callback) {
library_file_path_ = library_file;
itunes_callback_ = callback;
Start();
}
void SafeIAppsLibraryParser::Start() {
DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
// |library_file_| will be closed on the IO thread once it has been handed
// off to the child process.
library_file_.Initialize(library_file_path_,
base::File::FLAG_OPEN | base::File::FLAG_READ);
if (!library_file_.IsValid()) {
VLOG(1) << "Could not open iApps library XML file: "
<< library_file_path_.value();
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SafeIAppsLibraryParser::OnOpenLibraryFileFailed, this));
return;
}
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SafeIAppsLibraryParser::StartProcessOnIOThread, this));
}
SafeIAppsLibraryParser::~SafeIAppsLibraryParser() {}
void SafeIAppsLibraryParser::StartProcessOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK_EQ(INITIAL_STATE, parser_state_);
scoped_refptr<base::MessageLoopProxy> message_loop_proxy =
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
utility_process_host_ =
UtilityProcessHost::Create(this, message_loop_proxy.get())->AsWeakPtr();
// Wait for the startup notification before sending the main IPC to the
// utility process, so that we can dup the file handle.
utility_process_host_->Send(new ChromeUtilityMsg_StartupPing);
parser_state_ = PINGED_UTILITY_PROCESS_STATE;
}
void SafeIAppsLibraryParser::OnUtilityProcessStarted() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (parser_state_ != PINGED_UTILITY_PROCESS_STATE)
return;
if (utility_process_host_->GetData().handle == base::kNullProcessHandle) {
DLOG(ERROR) << "Child process handle is null";
OnError();
return;
}
if (!itunes_callback_.is_null()) {
utility_process_host_->Send(
new ChromeUtilityMsg_ParseITunesLibraryXmlFile(
IPC::TakeFileHandleForProcess(
library_file_.Pass(),
utility_process_host_->GetData().handle)));
} else if (!iphoto_callback_.is_null()) {
#if defined(OS_MACOSX)
utility_process_host_->Send(
new ChromeUtilityMsg_ParseIPhotoLibraryXmlFile(
IPC::TakeFileHandleForProcess(
library_file_.Pass(),
utility_process_host_->GetData().handle)));
#endif
}
parser_state_ = STARTED_PARSING_STATE;
}
#if defined(OS_MACOSX)
void SafeIAppsLibraryParser::OnGotIPhotoLibrary(
bool result, const iphoto::parser::Library& library) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!iphoto_callback_.is_null());
if (parser_state_ != STARTED_PARSING_STATE)
return;
MediaFileSystemBackend::MediaTaskRunner()->PostTask(
FROM_HERE,
base::Bind(iphoto_callback_, result, library));
parser_state_ = FINISHED_PARSING_STATE;
}
#endif
void SafeIAppsLibraryParser::OnGotITunesLibrary(
bool result, const itunes::parser::Library& library) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!itunes_callback_.is_null());
if (parser_state_ != STARTED_PARSING_STATE)
return;
MediaFileSystemBackend::MediaTaskRunner()->PostTask(
FROM_HERE,
base::Bind(itunes_callback_, result, library));
parser_state_ = FINISHED_PARSING_STATE;
}
void SafeIAppsLibraryParser::OnOpenLibraryFileFailed() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
OnError();
}
void SafeIAppsLibraryParser::OnProcessCrashed(int exit_code) {
OnError();
}
void SafeIAppsLibraryParser::OnError() {
parser_state_ = FINISHED_PARSING_STATE;
if (!itunes_callback_.is_null())
OnGotITunesLibrary(false /* failed */, itunes::parser::Library());
#if defined(OS_MACOSX)
if (!iphoto_callback_.is_null())
OnGotIPhotoLibrary(false /* failed */, iphoto::parser::Library());
#endif
}
bool SafeIAppsLibraryParser::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(SafeIAppsLibraryParser, message)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ProcessStarted,
OnUtilityProcessStarted)
#if defined(OS_MACOSX)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_GotIPhotoLibrary,
OnGotIPhotoLibrary)
#endif
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_GotITunesLibrary,
OnGotITunesLibrary)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
} // namespace iapps
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