sandboxed-api/contrib/libzip/utils/utils_zip.h

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2022-02-09 20:56:47 +08:00
// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CONTRIB_LIBZIP_UTILS_UTILS_ZIP_H_
#define CONTRIB_LIBZIP_UTILS_UTILS_ZIP_H_
#include <fcntl.h>
#include "contrib/libzip/sandboxed.h"
#include "sandboxed_api/util/status_macros.h"
class LibZip {
public:
explicit LibZip(ZipSandbox* sandbox, std::string filename, int flags)
: sandbox_(CHECK_NOTNULL(sandbox)),
api_(sandbox_),
filename_(std::move(filename)),
flags_(flags),
rfd_(open(filename.c_str(), O_RDWR | O_CREAT)) {
OpenRemote().IgnoreError();
}
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~LibZip();
bool IsOpen();
absl::StatusOr<std::string> GetName(uint64_t index);
absl::StatusOr<uint64_t> GetNumberEntries();
absl::StatusOr<std::vector<uint8_t>> ReadFile(uint64_t index);
absl::StatusOr<std::vector<uint8_t>> ReadFile(const std::string& filename);
absl::StatusOr<uint64_t> AddFile(const std::string& filename,
std::vector<uint8_t>& buf);
absl::StatusOr<uint64_t> AddFile(const std::string& filename, int fd);
absl::Status ReplaceFile(uint64_t index, std::vector<uint8_t>& buf);
absl::Status ReplaceFile(uint64_t index, int fd);
absl::Status DeleteFile(uint64_t index);
absl::StatusOr<std::string> GetError();
absl::Status Finish();
// Save a copy of file to another fd.
absl::Status Save(int fd);
// Save a copy to the same fd.
absl::Status Save();
protected:
bool IsOpenLocal();
absl::Status OpenRemote();
absl::StatusOr<std::vector<uint8_t>> ReadFile(sapi::v::RemotePtr& zipfile,
uint32_t size);
absl::StatusOr<uint64_t> AddFile(const std::string& filename,
sapi::v::RemotePtr& rzipsource);
absl::Status ReplaceFile(uint64_t index, sapi::v::RemotePtr& rzipsource);
absl::StatusOr<void*> GetSource(std::vector<uint8_t>& buf);
absl::StatusOr<void*> GetSource(int fd, const std::string& mode);
absl::StatusOr<void*> CreateSourceFromFd(sapi::v::Fd& rfd);
absl::Status Save(sapi::v::Fd& fd);
absl::Status CheckOpen();
absl::Status CheckFinished();
private:
ZipSandbox* sandbox_;
ZipApi api_;
int flags_;
std::unique_ptr<sapi::v::RemotePtr> zip_;
std::unique_ptr<sapi::v::RemotePtr> zipsource_;
sapi::v::Fd rfd_;
std::string filename_;
};
#endif // CONTRIB_LIBZIP_UTILS_UTILS_ZIP_H_