1*ec63e07aSXin Li // Copyright 2022 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_LIBZIP_SANDBOXED_H_ 16*ec63e07aSXin Li #define CONTRIB_LIBZIP_SANDBOXED_H_ 17*ec63e07aSXin Li 18*ec63e07aSXin Li #include <libgen.h> 19*ec63e07aSXin Li #include <syscall.h> 20*ec63e07aSXin Li 21*ec63e07aSXin Li #include <memory> 22*ec63e07aSXin Li 23*ec63e07aSXin Li // Note: This header is required because to work around an issue with the 24*ec63e07aSXin Li // libclang based header generator, which doesn't catch the types 25*ec63e07aSXin Li // defined by zip (for example zip_uint32_t). 26*ec63e07aSXin Li #include <zipconf.h> // NOLINT(build/include_order) 27*ec63e07aSXin Li 28*ec63e07aSXin Li #include "sapi_zip.sapi.h" // NOLINT(build/include) 29*ec63e07aSXin Li 30*ec63e07aSXin Li class ZipSapiSandbox : public ZipSandbox { 31*ec63e07aSXin Li public: ModifyPolicy(sandbox2::PolicyBuilder *)32*ec63e07aSXin Li std::unique_ptr<sandbox2::Policy> ModifyPolicy( 33*ec63e07aSXin Li sandbox2::PolicyBuilder*) override { 34*ec63e07aSXin Li return sandbox2::PolicyBuilder() 35*ec63e07aSXin Li .AllowDynamicStartup() 36*ec63e07aSXin Li .AllowRead() 37*ec63e07aSXin Li .AllowWrite() 38*ec63e07aSXin Li .AllowSystemMalloc() 39*ec63e07aSXin Li .AllowGetPIDs() 40*ec63e07aSXin Li .AllowExit() 41*ec63e07aSXin Li .AllowSafeFcntl() 42*ec63e07aSXin Li .AllowSyscalls({ 43*ec63e07aSXin Li __NR_dup, 44*ec63e07aSXin Li __NR_recvmsg, 45*ec63e07aSXin Li __NR_ftruncate, 46*ec63e07aSXin Li }) 47*ec63e07aSXin Li .BlockSyscallWithErrno(__NR_openat, ENOENT) 48*ec63e07aSXin Li .BuildOrDie(); 49*ec63e07aSXin Li } 50*ec63e07aSXin Li }; 51*ec63e07aSXin Li 52*ec63e07aSXin Li #endif // CONTRIB_LIBZIP_SANDBOXED_H_ 53