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_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H 20 #define GRPC_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_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H */ 58
