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 CONTRIB_LIBTIFF_SANDBOXED_H_ 16*ec63e07aSXin Li #define CONTRIB_LIBTIFF_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 <memory> 23*ec63e07aSXin Li #include <utility> 24*ec63e07aSXin Li 25*ec63e07aSXin Li #include "absl/flags/flag.h" 26*ec63e07aSXin Li #include "tiff_sapi.sapi.h" // NOLINT(build/include) 27*ec63e07aSXin Li 28*ec63e07aSXin Li class TiffSapiSandbox : public TiffSandbox { 29*ec63e07aSXin Li public: 30*ec63e07aSXin Li explicit TiffSapiSandbox(std::string dir = "", std::string file = "") dir_(std::move (dir))31*ec63e07aSXin Li : dir_(std::move(dir)), file_(std::move(file)) {} 32*ec63e07aSXin Li 33*ec63e07aSXin Li private: ModifyPolicy(sandbox2::PolicyBuilder *)34*ec63e07aSXin Li std::unique_ptr<sandbox2::Policy> ModifyPolicy( 35*ec63e07aSXin Li sandbox2::PolicyBuilder*) override { 36*ec63e07aSXin Li auto builder = sandbox2::PolicyBuilder() 37*ec63e07aSXin Li .AllowRead() 38*ec63e07aSXin Li .AllowStaticStartup() 39*ec63e07aSXin Li .AllowWrite() 40*ec63e07aSXin Li .AllowOpen() 41*ec63e07aSXin Li .AllowExit() 42*ec63e07aSXin Li .AllowStat() 43*ec63e07aSXin Li .AllowSystemMalloc() 44*ec63e07aSXin Li .AllowSyscalls({ 45*ec63e07aSXin Li __NR_futex, 46*ec63e07aSXin Li __NR_close, 47*ec63e07aSXin Li __NR_lseek, 48*ec63e07aSXin Li __NR_gettid, 49*ec63e07aSXin Li __NR_sysinfo, 50*ec63e07aSXin Li __NR_mmap, 51*ec63e07aSXin Li __NR_munmap, 52*ec63e07aSXin Li }); 53*ec63e07aSXin Li 54*ec63e07aSXin Li if (!dir_.empty()) { 55*ec63e07aSXin Li builder.AddDirectory(dir_, /*is_ro=*/false); 56*ec63e07aSXin Li } 57*ec63e07aSXin Li 58*ec63e07aSXin Li if (!file_.empty()) { 59*ec63e07aSXin Li builder.AddFile(file_, /*is_ro=*/false); 60*ec63e07aSXin Li } 61*ec63e07aSXin Li 62*ec63e07aSXin Li return builder.BuildOrDie(); 63*ec63e07aSXin Li } 64*ec63e07aSXin Li 65*ec63e07aSXin Li std::string dir_; 66*ec63e07aSXin Li std::string file_; 67*ec63e07aSXin Li }; 68*ec63e07aSXin Li 69*ec63e07aSXin Li #endif // CONTRIB_LIBTIFF_SANDBOXED_H_ 70