sandboxed-api/contrib/jsonnet/jsonnet_base_sandbox.h
Christian Blichmann ee5ebaa48f CMake: Make it easier for projects to consume sandboxed libraries
This change starts with Jsonnet as the canonical, ready-made sandboxed library
example. Follow-up changes should similarly migrate the OSS Internship
sandboxes.

- Add an `add_sapi_subdirectory()` which sets up source and binary directories
  correctly when consuming SAPI as sub-project
- Restructure the Jsonnet `CMakeLists.txt` and simplify header inclusions
- Update the Jsonnet README file

PiperOrigin-RevId: 425818479
Change-Id: Iba9e83201863b4ad8a91914397b310d9d4230423
2022-02-02 01:09:56 -08:00

59 lines
1.7 KiB
C++

// Copyright 2020 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_JSONNET_BASE_SANDBOX_H_
#define CONTRIB_JSONNET_BASE_SANDBOX_H_
#include <libgen.h>
#include <syscall.h>
#include <memory>
#include <string>
#include <utility>
#include "jsonnet_sapi.sapi.h" // NOLINT(build/include)
#include "sandboxed_api/transaction.h"
#include "sandboxed_api/vars.h"
class JsonnetBaseSandbox : public JsonnetSandbox {
public:
explicit JsonnetBaseSandbox(std::string in_file, std::string out_file)
: in_file_(std::move(in_file)), out_file_(std::move(out_file)) {}
std::unique_ptr<sandbox2::Policy> ModifyPolicy(
sandbox2::PolicyBuilder*) override {
return sandbox2::PolicyBuilder()
.AllowStaticStartup()
.AllowOpen()
.AllowRead()
.AllowWrite()
.AllowStat()
.AllowSystemMalloc()
.AllowExit()
.AllowSyscalls({
__NR_futex,
__NR_close,
})
.AddDirectoryAt(dirname(&out_file_[0]), "/output", /*is_ro=*/false)
.AddDirectoryAt(dirname(&in_file_[0]), "/input", true)
.BuildOrDie();
}
private:
std::string in_file_;
std::string out_file_;
};
#endif // CONTRIB_JSONNET_BASE_SANDBOX_H_