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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 "base/files/file_util.h"
#include "chrome/browser/extensions/api/image_writer_private/error_messages.h"
#include "chrome/browser/extensions/api/image_writer_private/operation_manager.h"
#include "chrome/browser/extensions/api/image_writer_private/write_from_url_operation.h"
#include "content/public/browser/browser_thread.h"
#include "net/url_request/url_fetcher.h"
namespace extensions {
namespace image_writer {
using content::BrowserThread;
WriteFromUrlOperation::WriteFromUrlOperation(
base::WeakPtr<OperationManager> manager,
const ExtensionId& extension_id,
net::URLRequestContextGetter* request_context,
GURL url,
const std::string& hash,
const std::string& device_path)
: Operation(manager, extension_id, device_path),
request_context_(request_context),
url_(url),
hash_(hash),
download_continuation_() {}
WriteFromUrlOperation::~WriteFromUrlOperation() {
}
void WriteFromUrlOperation::StartImpl() {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
GetDownloadTarget(base::Bind(
&WriteFromUrlOperation::Download,
this,
base::Bind(
&WriteFromUrlOperation::VerifyDownload,
this,
base::Bind(
&WriteFromUrlOperation::Unzip,
this,
base::Bind(&WriteFromUrlOperation::Write,
this,
base::Bind(&WriteFromUrlOperation::VerifyWrite,
this,
base::Bind(&WriteFromUrlOperation::Finish,
this)))))));
}
void WriteFromUrlOperation::GetDownloadTarget(
const base::Closure& continuation) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (IsCancelled()) {
return;
}
if (url_.ExtractFileName().empty()) {
if (!base::CreateTemporaryFileInDir(temp_dir_.path(), &image_path_)) {
Error(error::kTempFileError);
return;
}
} else {
base::FilePath file_name =
base::FilePath::FromUTF8Unsafe(url_.ExtractFileName());
image_path_ = temp_dir_.path().Append(file_name);
}
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, continuation);
}
void WriteFromUrlOperation::Download(const base::Closure& continuation) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (IsCancelled()) {
return;
}
download_continuation_ = continuation;
SetStage(image_writer_api::STAGE_DOWNLOAD);
// Store the URL fetcher on this object so that it is destroyed before this
// object is.
url_fetcher_ = net::URLFetcher::Create(url_, net::URLFetcher::GET, this);
url_fetcher_->SetRequestContext(request_context_);
url_fetcher_->SaveResponseToFileAtPath(
image_path_,
BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
AddCleanUpFunction(
base::Bind(&WriteFromUrlOperation::DestroyUrlFetcher, this));
url_fetcher_->Start();
}
void WriteFromUrlOperation::DestroyUrlFetcher() { url_fetcher_.reset(); }
void WriteFromUrlOperation::OnURLFetchUploadProgress(
const net::URLFetcher* source,
int64_t current,
int64_t total) {
// No-op
}
void WriteFromUrlOperation::OnURLFetchDownloadProgress(
const net::URLFetcher* source,
int64_t current,
int64_t total) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (IsCancelled()) {
url_fetcher_.reset(NULL);
}
int progress = (kProgressComplete * current) / total;
SetProgress(progress);
}
void WriteFromUrlOperation::OnURLFetchComplete(const net::URLFetcher* source) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (source->GetStatus().is_success() && source->GetResponseCode() == 200) {
SetProgress(kProgressComplete);
download_continuation_.Run();
// Remove the reference to ourselves in this closure.
download_continuation_ = base::Closure();
} else {
Error(error::kDownloadInterrupted);
}
}
void WriteFromUrlOperation::VerifyDownload(const base::Closure& continuation) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (IsCancelled()) {
return;
}
// Skip verify if no hash.
if (hash_.empty()) {
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, continuation);
return;
}
SetStage(image_writer_api::STAGE_VERIFYDOWNLOAD);
GetMD5SumOfFile(
image_path_,
0,
0,
kProgressComplete,
base::Bind(
&WriteFromUrlOperation::VerifyDownloadCompare, this, continuation));
}
void WriteFromUrlOperation::VerifyDownloadCompare(
const base::Closure& continuation,
const std::string& download_hash) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (download_hash != hash_) {
Error(error::kDownloadHashError);
return;
}
BrowserThread::PostTask(
BrowserThread::FILE,
FROM_HERE,
base::Bind(
&WriteFromUrlOperation::VerifyDownloadComplete, this, continuation));
}
void WriteFromUrlOperation::VerifyDownloadComplete(
const base::Closure& continuation) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE);
if (IsCancelled()) {
return;
}
SetProgress(kProgressComplete);
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE, continuation);
}
} // namespace image_writer
} // namespace extensions
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