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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/webstore_install_helper.h"
#include <string>
#include "base/bind.h"
#include "base/values.h"
#include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
#include "chrome/common/chrome_utility_messages.h"
#include "chrome/common/extensions/chrome_utility_extensions_messages.h"
#include "chrome/grit/generated_resources.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/utility_process_host.h"
#include "net/base/load_flags.h"
#include "net/url_request/url_request.h"
#include "ui/base/l10n/l10n_util.h"
using content::BrowserThread;
using content::UtilityProcessHost;
namespace {
const char kImageDecodeError[] = "Image decode failed";
} // namespace
namespace extensions {
WebstoreInstallHelper::WebstoreInstallHelper(
Delegate* delegate,
const std::string& id,
const std::string& manifest,
const GURL& icon_url,
net::URLRequestContextGetter* context_getter)
: delegate_(delegate),
id_(id),
manifest_(manifest),
icon_url_(icon_url),
context_getter_(context_getter),
icon_decode_complete_(false),
manifest_parse_complete_(false),
parse_error_(Delegate::UNKNOWN_ERROR) {
}
WebstoreInstallHelper::~WebstoreInstallHelper() {}
void WebstoreInstallHelper::Start() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (icon_url_.is_empty()) {
icon_decode_complete_ = true;
} else {
icon_fetcher_.reset(new chrome::BitmapFetcher(icon_url_, this));
icon_fetcher_->Start(
context_getter_, std::string(),
net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
net::LOAD_DO_NOT_SAVE_COOKIES | net::LOAD_DO_NOT_SEND_COOKIES);
}
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::StartWorkOnIOThread, this));
}
void WebstoreInstallHelper::StartWorkOnIOThread() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
utility_host_ = UtilityProcessHost::Create(
this, base::MessageLoopProxy::current().get())->AsWeakPtr();
utility_host_->SetName(l10n_util::GetStringUTF16(
IDS_UTILITY_PROCESS_JSON_PARSER_NAME));
utility_host_->StartBatchMode();
utility_host_->Send(new ChromeUtilityMsg_ParseJSON(manifest_));
}
bool WebstoreInstallHelper::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(WebstoreInstallHelper, message)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Succeeded,
OnJSONParseSucceeded)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Failed,
OnJSONParseFailed)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void WebstoreInstallHelper::OnFetchComplete(const GURL& url,
const SkBitmap* image) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (image)
icon_ = *image;
icon_decode_complete_ = true;
if (icon_.empty()) {
error_ = kImageDecodeError;
parse_error_ = Delegate::ICON_ERROR;
}
icon_fetcher_.reset();
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::ReportResultsIfComplete, this));
}
void WebstoreInstallHelper::OnJSONParseSucceeded(
const base::ListValue& wrapper) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
manifest_parse_complete_ = true;
const base::Value* value = NULL;
CHECK(wrapper.Get(0, &value));
if (value->IsType(base::Value::TYPE_DICTIONARY)) {
parsed_manifest_.reset(
static_cast<const base::DictionaryValue*>(value)->DeepCopy());
} else {
parse_error_ = Delegate::MANIFEST_ERROR;
}
ReportResultsIfComplete();
}
void WebstoreInstallHelper::OnJSONParseFailed(
const std::string& error_message) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
manifest_parse_complete_ = true;
error_ = error_message;
parse_error_ = Delegate::MANIFEST_ERROR;
ReportResultsIfComplete();
}
void WebstoreInstallHelper::ReportResultsIfComplete() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (!icon_decode_complete_ || !manifest_parse_complete_)
return;
// The utility_host_ will take care of deleting itself after this call.
if (utility_host_.get()) {
utility_host_->EndBatchMode();
utility_host_.reset();
}
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::ReportResultFromUIThread, this));
}
void WebstoreInstallHelper::ReportResultFromUIThread() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (error_.empty() && parsed_manifest_)
delegate_->OnWebstoreParseSuccess(id_, icon_, parsed_manifest_.release());
else
delegate_->OnWebstoreParseFailure(id_, parse_error_, error_);
}
} // namespace extensions
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