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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.
#ifndef CHROME_BROWSER_CHROMEOS_FILE_MANAGER_ZIP_FILE_CREATOR_H_
#define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_ZIP_FILE_CREATOR_H_
#include <string>
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/platform_file.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/utility_process_host_client.h"
#include "extensions/common/extension.h"
namespace file_manager {
// ZipFileCreator creates a ZIP file from a specified list of files and
// directories under a common parent directory. This is done in a sandboxed
// subprocess to protect the browser process from handling arbitrary input data
// from untrusted sources.
//
// Lifetime management:
//
// This class is ref-counted by each call it makes to itself on another thread,
// and by UtilityProcessHost.
//
// Additionally, we hold a reference to our own client so that it lives at least
// long enough to receive the result of zip file creation.
class ZipFileCreator : public content::UtilityProcessHostClient {
public:
class Observer {
public:
virtual void OnZipDone(bool success) = 0;
protected:
virtual ~Observer() {}
};
// Creates a zip file from the specified list of files and directories.
ZipFileCreator(Observer* observer,
const base::FilePath& src_dir,
const std::vector<base::FilePath>& src_relative_paths,
const base::FilePath& dest_file);
// Start creating the zip file. The client is called with the results.
void Start();
private:
friend class ProcessHostClient;
virtual ~ZipFileCreator();
// Opens a handle for the zip file, and proceeds to StartProcessOnIOThread.
void OpenFileHandleOnBlockingThreadPool();
// Starts the utility process that creates the zip file.
void StartProcessOnIOThread(base::PlatformFile dest_file);
// UtilityProcessHostClient
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
virtual void OnProcessCrashed(int exit_code) OVERRIDE;
// IPC message handlers.
void OnCreateZipFileSucceeded();
void OnCreateZipFileFailed();
void ReportDone(bool success);
// The observer's thread. This is the thread we respond on.
content::BrowserThread::ID thread_identifier_;
// The observer.
Observer* observer_;
// The source directory for input files.
base::FilePath src_dir_;
// The list of source files paths to be included in the zip file.
// Entries are relative paths under directory |src_dir_|.
std::vector<base::FilePath> src_relative_paths_;
// The output zip file.
base::FilePath dest_file_;
// Whether we've received a response from the utility process yet.
bool got_response_;
};
} // namespace file_manager
#endif // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_ZIP_FILE_CREATOR_H_
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