sandboxed-api/contrib/libzip/sandboxed.h
Mariusz Zaborski e49318571b Sandbox zip
2022-02-22 10:51:53 -05:00

52 lines
1.5 KiB
C++

// 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_SANDBOXED_H_
#define CONTRIB_LIBZIP_SANDBOXED_H_
#include <libgen.h>
#include <syscall.h>
#include <memory>
// XXX: This header is required because of the bug in generator.
// The generator for some reason doesn't catch the types
// defined by zip (for example zip_uint32_t).
#include <zipconf.h>
#include "sapi_zip.sapi.h" // NOLINT(build/include)
class ZipSapiSandbox : public ZipSandbox {
public:
std::unique_ptr<sandbox2::Policy> ModifyPolicy(
sandbox2::PolicyBuilder*) override {
return sandbox2::PolicyBuilder()
.AllowDynamicStartup()
.AllowRead()
.AllowWrite()
.AllowSystemMalloc()
.AllowExit()
.AllowSafeFcntl()
.AllowSyscalls({
__NR_dup,
__NR_recvmsg,
__NR_ftruncate,
})
.BlockSyscallWithErrno(__NR_openat, ENOENT)
.BuildOrDie();
}
};
#endif // CONTRIB_LIBZIP_SANDBOXED_H_