1 // Copyright 2020 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef CONTRIB_JSONNET_BASE_SANDBOX_H_ 16 #define CONTRIB_JSONNET_BASE_SANDBOX_H_ 17 18 #include <libgen.h> 19 #include <syscall.h> 20 21 #include <memory> 22 #include <string> 23 #include <utility> 24 25 #include "jsonnet_sapi.sapi.h" // NOLINT(build/include) 26 #include "sandboxed_api/transaction.h" 27 #include "sandboxed_api/vars.h" 28 29 class JsonnetBaseSandbox : public JsonnetSandbox { 30 public: JsonnetBaseSandbox(std::string in_file,std::string out_file)31 explicit JsonnetBaseSandbox(std::string in_file, std::string out_file) 32 : in_file_(std::move(in_file)), out_file_(std::move(out_file)) {} 33 ModifyPolicy(sandbox2::PolicyBuilder *)34 std::unique_ptr<sandbox2::Policy> ModifyPolicy( 35 sandbox2::PolicyBuilder*) override { 36 return sandbox2::PolicyBuilder() 37 .AllowStaticStartup() 38 .AllowOpen() 39 .AllowRead() 40 .AllowWrite() 41 .AllowStat() 42 .AllowSystemMalloc() 43 .AllowExit() 44 .AllowSyscalls({ 45 __NR_futex, 46 __NR_close, 47 }) 48 .AddDirectoryAt(dirname(&out_file_[0]), "/output", /*is_ro=*/false) 49 .AddDirectoryAt(dirname(&in_file_[0]), "/input", true) 50 .BuildOrDie(); 51 } 52 53 private: 54 std::string in_file_; 55 std::string out_file_; 56 }; 57 58 #endif // CONTRIB_JSONNET_BASE_SANDBOX_H_ 59