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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/extension_resource_protocols.h"
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "base/path_service.h"
#include "base/threading/sequenced_worker_pool.h"
#include "base/threading/thread_checker.h"
#include "chrome/common/chrome_paths.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/common/file_util.h"
#include "net/url_request/url_request_file_job.h"
namespace {
base::FilePath ResolvePath(const GURL& url) {
base::FilePath root_path;
PathService::Get(chrome::DIR_RESOURCES_EXTENSION, &root_path);
return extensions::file_util::ExtensionResourceURLToFilePath(url, root_path);
}
class ExtensionResourcesJob : public net::URLRequestFileJob {
public:
ExtensionResourcesJob(net::URLRequest* request,
net::NetworkDelegate* network_delegate)
: net::URLRequestFileJob(
request, network_delegate, base::FilePath(),
content::BrowserThread::GetBlockingPool()->
GetTaskRunnerWithShutdownBehavior(
base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)),
weak_ptr_factory_(this) {}
void Start() override;
bool IsRedirectResponse(GURL* location, int* http_status_code) override;
protected:
~ExtensionResourcesJob() override {}
void ResolvePathDone(const base::FilePath& resolved_path);
private:
base::WeakPtrFactory<ExtensionResourcesJob> weak_ptr_factory_;
base::ThreadChecker thread_checker_;
DISALLOW_COPY_AND_ASSIGN(ExtensionResourcesJob);
};
void ExtensionResourcesJob::Start() {
DCHECK(thread_checker_.CalledOnValidThread());
content::BrowserThread::PostTaskAndReplyWithResult(
content::BrowserThread::FILE, FROM_HERE,
base::Bind(&ResolvePath, request()->url()),
base::Bind(&ExtensionResourcesJob::ResolvePathDone,
weak_ptr_factory_.GetWeakPtr()));
}
bool ExtensionResourcesJob::IsRedirectResponse(GURL* location,
int* http_status_code) {
return false;
}
void ExtensionResourcesJob::ResolvePathDone(
const base::FilePath& resolved_path) {
DCHECK(thread_checker_.CalledOnValidThread());
file_path_ = resolved_path;
net::URLRequestFileJob::Start();
}
class ExtensionResourceProtocolHandler
: public net::URLRequestJobFactory::ProtocolHandler {
public:
ExtensionResourceProtocolHandler() {}
~ExtensionResourceProtocolHandler() override {}
net::URLRequestJob* MaybeCreateJob(
net::URLRequest* request,
net::NetworkDelegate* network_delegate) const override;
private:
DISALLOW_COPY_AND_ASSIGN(ExtensionResourceProtocolHandler);
};
// Creates URLRequestJobs for chrome-extension-resource:// URLs.
net::URLRequestJob*
ExtensionResourceProtocolHandler::MaybeCreateJob(
net::URLRequest* request, net::NetworkDelegate* network_delegate) const {
return new ExtensionResourcesJob(request, network_delegate);
}
} // namespace
net::URLRequestJobFactory::ProtocolHandler*
CreateExtensionResourceProtocolHandler() {
return new ExtensionResourceProtocolHandler();
}
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