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// Copyright 2014 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 EXTENSIONS_BROWSER_ZIPFILE_INSTALLER_H_
#define EXTENSIONS_BROWSER_ZIPFILE_INSTALLER_H_
#include <memory>
#include <string>
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "services/data_decoder/public/cpp/data_decoder.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace extensions {
// ZipFileInstaller unzips an extension safely using the Unzipper and
// SafeJSONParser services.
// This class is not thread-safe: it is bound to the sequence it is created on.
class ZipFileInstaller : public base::RefCountedThreadSafe<ZipFileInstaller> {
public:
// The callback invoked when the ZIP file installation is finished.
// On success, |unzip_dir| points to the directory the ZIP file was installed
// and |error| is empty. On failure, |unzip_dir| is empty and |error| contains
// an error message describing the failure.
using DoneCallback = base::OnceCallback<void(const base::FilePath& zip_file,
const base::FilePath& unzip_dir,
const std::string& error)>;
// Creates a ZipFileInstaller that invokes |done_callback| when done.
static scoped_refptr<ZipFileInstaller> Create(
const scoped_refptr<base::SequencedTaskRunner>& io_task_runner,
DoneCallback done_callback);
// Creates a temporary directory and unzips the extension in it.
void LoadFromZipFile(const base::FilePath& zip_file);
// Unzips the extension in |unzip_dir|.
void LoadFromZipFileInDir(const base::FilePath& zip_file,
const base::FilePath& unzip_dir);
private:
friend class base::RefCountedThreadSafe<ZipFileInstaller>;
FRIEND_TEST_ALL_PREFIXES(ZipFileInstallerTest, NonTheme_FileExtractionFilter);
FRIEND_TEST_ALL_PREFIXES(ZipFileInstallerTest, Theme_FileExtractionFilter);
FRIEND_TEST_ALL_PREFIXES(ZipFileInstallerTest, ManifestExtractionFilter);
explicit ZipFileInstaller(
const scoped_refptr<base::SequencedTaskRunner>& io_task_runner,
DoneCallback done_callback);
~ZipFileInstaller();
void LoadFromZipFileImpl(const base::FilePath& zip_file,
const base::FilePath& unzip_dir);
// Unzip an extension into |unzip_dir| and load it with an UnpackedInstaller.
void Unzip(absl::optional<base::FilePath> unzip_dir);
void ManifestUnzipped(const base::FilePath& unzip_dir, bool success);
void ManifestRead(const base::FilePath& unzip_dir,
absl::optional<std::string> manifest_content);
void ManifestParsed(const base::FilePath& unzip_dir,
data_decoder::DataDecoder::ValueOrError result);
void UnzipDone(const base::FilePath& unzip_dir, bool success);
// On failure, report the |error| reason.
void ReportFailure(const std::string& error);
// Callback invoked when unzipping has finished.
DoneCallback done_callback_;
// Whether a file should be extracted as part of installing an
// extension/theme. Protects against unused or potentially hamrful files.
static bool ShouldExtractFile(bool is_theme, const base::FilePath& file_path);
// Returns true if |file_path| points to an extension manifest.
static bool IsManifestFile(const base::FilePath& file_path);
// File containing the extension to unzip.
base::FilePath zip_file_;
// Task runner for file I/O.
scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
SEQUENCE_CHECKER(sequence_checker_);
DISALLOW_COPY_AND_ASSIGN(ZipFileInstaller);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_ZIPFILE_INSTALLER_H_
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