1 // 2 // 3 // Copyright 2018 gRPC authors. 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 // 17 // 18 19 #ifndef GRPC_SRC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H 20 #define GRPC_SRC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H 21 22 namespace grpc_core { 23 namespace internal { 24 25 /// 26 /// This method is a helper function that reads a file containing system bios 27 /// data. Exposed for testing only. 28 /// 29 ///- bios_file: a file containing BIOS data used to determine GCE tenancy 30 /// information. 31 /// 32 /// It returns a buffer containing the data read from the file. 33 /// 34 char* read_bios_file(const char* bios_file); 35 36 /// 37 /// This method checks if system BIOS data contains Google-specific phrases. 38 /// Exposed for testing only. 39 /// 40 ///- bios_data: a buffer containing system BIOS data. 41 /// 42 /// It returns true if the BIOS data contains Google-specific phrases, and false 43 /// otherwise. 44 /// 45 bool check_bios_data(const char* bios_data); 46 47 } // namespace internal 48 } // namespace grpc_core 49 50 /// 51 /// This method checks if a VM (Windows or Linux) is running within Google 52 /// compute Engine (GCE) or not. It returns true if the VM is running in GCE and 53 /// false otherwise. 54 /// 55 bool grpc_alts_is_running_on_gcp(); 56 57 #endif // GRPC_SRC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H 58