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// Copyright (c) 2012 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/extensions/updater/safe_manifest_parser.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/location.h"
#include "base/logging.h"
#include "chrome/common/chrome_utility_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/resource_dispatcher_host.h"
#include "content/public/browser/utility_process_host.h"
#include "content/public/common/content_switches.h"
#include "ipc/ipc_message_macros.h"
using content::BrowserThread;
namespace extensions {
SafeManifestParser::SafeManifestParser(const std::string& xml,
ManifestFetchData* fetch_data,
const UpdateCallback& update_callback)
: xml_(xml),
fetch_data_(fetch_data),
update_callback_(update_callback) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
void SafeManifestParser::Start() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&SafeManifestParser::ParseInSandbox, this))) {
NOTREACHED();
}
}
SafeManifestParser::~SafeManifestParser() {
// If we're using UtilityProcessHost, we may not be destroyed on
// the UI or IO thread.
}
void SafeManifestParser::ParseInSandbox() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// TODO(asargent) we shouldn't need to do this branch here - instead
// UtilityProcessHost should handle it for us. (http://crbug.com/19192)
bool use_utility_process = content::ResourceDispatcherHost::Get() &&
!CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess);
if (use_utility_process) {
content::UtilityProcessHost* host = content::UtilityProcessHost::Create(
this,
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI).get());
host->EnableZygote();
host->Send(new ChromeUtilityMsg_ParseUpdateManifest(xml_));
} else {
UpdateManifest manifest;
if (manifest.Parse(xml_)) {
if (!BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(
&SafeManifestParser::OnParseUpdateManifestSucceeded, this,
manifest.results()))) {
NOTREACHED();
}
} else {
if (!BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(
&SafeManifestParser::OnParseUpdateManifestFailed, this,
manifest.errors()))) {
NOTREACHED();
}
}
}
}
bool SafeManifestParser::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(SafeManifestParser, message)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseUpdateManifest_Succeeded,
OnParseUpdateManifestSucceeded)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseUpdateManifest_Failed,
OnParseUpdateManifestFailed)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void SafeManifestParser::OnParseUpdateManifestSucceeded(
const UpdateManifest::Results& results) {
VLOG(2) << "parsing manifest succeeded (" << fetch_data_->full_url() << ")";
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
update_callback_.Run(*fetch_data_, &results);
}
void SafeManifestParser::OnParseUpdateManifestFailed(
const std::string& error_message) {
VLOG(2) << "parsing manifest failed (" << fetch_data_->full_url() << ")";
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
LOG(WARNING) << "Error parsing update manifest:\n" << error_message;
update_callback_.Run(*fetch_data_, NULL);
}
} // namespace extensions
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