1*ec63e07aSXin Li // Copyright 2020 Google LLC 2*ec63e07aSXin Li // 3*ec63e07aSXin Li // Licensed under the Apache License, Version 2.0 (the "License"); 4*ec63e07aSXin Li // you may not use this file except in compliance with the License. 5*ec63e07aSXin Li // You may obtain a copy of the License at 6*ec63e07aSXin Li // 7*ec63e07aSXin Li // https://www.apache.org/licenses/LICENSE-2.0 8*ec63e07aSXin Li // 9*ec63e07aSXin Li // Unless required by applicable law or agreed to in writing, software 10*ec63e07aSXin Li // distributed under the License is distributed on an "AS IS" BASIS, 11*ec63e07aSXin Li // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12*ec63e07aSXin Li // See the License for the specific language governing permissions and 13*ec63e07aSXin Li // limitations under the License. 14*ec63e07aSXin Li 15*ec63e07aSXin Li #ifndef LIBPNG_SANDBOXED_H_ 16*ec63e07aSXin Li #define LIBPNG_SANDBOXED_H_ 17*ec63e07aSXin Li 18*ec63e07aSXin Li #include <linux/futex.h> 19*ec63e07aSXin Li #include <syscall.h> 20*ec63e07aSXin Li 21*ec63e07aSXin Li #include <string> 22*ec63e07aSXin Li #include <utility> 23*ec63e07aSXin Li #include <vector> 24*ec63e07aSXin Li 25*ec63e07aSXin Li #include "libpng_sapi.sapi.h" // NOLINT(build/include) 26*ec63e07aSXin Li 27*ec63e07aSXin Li class LibPNGSapiSandbox : public LibPNGSandbox { 28*ec63e07aSXin Li public: AddFile(const std::string & file)29*ec63e07aSXin Li void AddFile(const std::string& file) { files_.push_back(file); } 30*ec63e07aSXin Li 31*ec63e07aSXin Li private: ModifyPolicy(sandbox2::PolicyBuilder *)32*ec63e07aSXin Li std::unique_ptr<sandbox2::Policy> ModifyPolicy( 33*ec63e07aSXin Li sandbox2::PolicyBuilder*) override { 34*ec63e07aSXin Li sandbox2::PolicyBuilder builder; 35*ec63e07aSXin Li builder.AllowRead() 36*ec63e07aSXin Li .AllowStaticStartup() 37*ec63e07aSXin Li .AllowWrite() 38*ec63e07aSXin Li .AllowOpen() 39*ec63e07aSXin Li .AllowExit() 40*ec63e07aSXin Li .AllowStat() 41*ec63e07aSXin Li .AllowMmapWithoutExec() 42*ec63e07aSXin Li .AllowSystemMalloc() 43*ec63e07aSXin Li .AllowSyscalls({ 44*ec63e07aSXin Li __NR_futex, 45*ec63e07aSXin Li __NR_close, 46*ec63e07aSXin Li __NR_lseek, 47*ec63e07aSXin Li __NR_gettid, 48*ec63e07aSXin Li __NR_sysinfo, 49*ec63e07aSXin Li __NR_munmap, 50*ec63e07aSXin Li __NR_recvmsg, 51*ec63e07aSXin Li __NR_fcntl, 52*ec63e07aSXin Li }); 53*ec63e07aSXin Li 54*ec63e07aSXin Li for (const auto& file : files_) { 55*ec63e07aSXin Li builder->AddFile(file, /*is_ro=*/false); 56*ec63e07aSXin Li } 57*ec63e07aSXin Li 58*ec63e07aSXin Li return builder.BuildOrDie(); 59*ec63e07aSXin Li } 60*ec63e07aSXin Li 61*ec63e07aSXin Li std::vector<std::string> files_; 62*ec63e07aSXin Li }; 63*ec63e07aSXin Li 64*ec63e07aSXin Li #endif // LIBPNG_SANDBOXED_H_ 65