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// Copyright (c) 2011 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/common/chrome_utility_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/url_fetcher.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_status.h"
namespace {
const char kImageDecodeError[] = "Image decode failed";
} // namespace
WebstoreInstallHelper::WebstoreInstallHelper(
Delegate* delegate,
const std::string& id,
const std::string& manifest,
const std::string& icon_data,
const GURL& icon_url,
net::URLRequestContextGetter* context_getter)
: delegate_(delegate),
id_(id),
manifest_(manifest),
icon_base64_data_(icon_data),
icon_url_(icon_url),
context_getter_(context_getter),
utility_host_(NULL),
icon_decode_complete_(false),
manifest_parse_complete_(false),
parse_error_(Delegate::UNKNOWN_ERROR) {}
WebstoreInstallHelper::~WebstoreInstallHelper() {}
void WebstoreInstallHelper::Start() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
CHECK(icon_base64_data_.empty() || icon_url_.is_empty());
if (icon_base64_data_.empty() && icon_url_.is_empty())
icon_decode_complete_ = true;
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::StartWorkOnIOThread, this));
if (!icon_url_.is_empty()) {
CHECK(context_getter_);
url_fetcher_.reset(content::URLFetcher::Create(
icon_url_, content::URLFetcher::GET, this));
url_fetcher_->SetRequestContext(context_getter_);
url_fetcher_->Start();
// We'll get called back in OnURLFetchComplete.
}
}
void WebstoreInstallHelper::StartWorkOnIOThread() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
utility_host_ = new UtilityProcessHost(this, BrowserThread::IO);
utility_host_->StartBatchMode();
if (!icon_base64_data_.empty())
utility_host_->Send(
new ChromeUtilityMsg_DecodeImageBase64(icon_base64_data_));
utility_host_->Send(new ChromeUtilityMsg_ParseJSON(manifest_));
}
void WebstoreInstallHelper::OnURLFetchComplete(
const content::URLFetcher* source) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
CHECK(source == url_fetcher_.get());
if (source->GetStatus().status() != net::URLRequestStatus::SUCCESS ||
source->GetResponseCode() != 200) {
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::OnDecodeImageFailed, this));
} else {
std::string response_data;
source->GetResponseAsString(&response_data);
fetched_icon_data_.insert(fetched_icon_data_.begin(),
response_data.begin(),
response_data.end());
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::StartFetchedImageDecode, this));
}
url_fetcher_.reset();
}
void WebstoreInstallHelper::StartFetchedImageDecode() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
CHECK(utility_host_);
utility_host_->Send(new ChromeUtilityMsg_DecodeImage(fetched_icon_data_));
}
bool WebstoreInstallHelper::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(WebstoreInstallHelper, message)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Succeeded,
OnDecodeImageSucceeded)
IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Failed,
OnDecodeImageFailed)
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::OnDecodeImageSucceeded(
const SkBitmap& decoded_image) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
icon_ = decoded_image;
icon_decode_complete_ = true;
ReportResultsIfComplete();
}
void WebstoreInstallHelper::OnDecodeImageFailed() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
icon_decode_complete_ = true;
error_ = kImageDecodeError;
parse_error_ = Delegate::ICON_ERROR;
ReportResultsIfComplete();
}
void WebstoreInstallHelper::OnJSONParseSucceeded(const ListValue& wrapper) {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
manifest_parse_complete_ = true;
Value* value = NULL;
CHECK(wrapper.Get(0, &value));
if (value->IsType(Value::TYPE_DICTIONARY)) {
parsed_manifest_.reset(
static_cast<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.
utility_host_->EndBatchMode();
utility_host_ = NULL;
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&WebstoreInstallHelper::ReportResultFromUIThread, this));
}
void WebstoreInstallHelper::ReportResultFromUIThread() {
CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (error_.empty() && parsed_manifest_.get())
delegate_->OnWebstoreParseSuccess(id_, icon_, parsed_manifest_.release());
else
delegate_->OnWebstoreParseFailure(id_, parse_error_, error_);
}
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