1 /* 2 * 3 * Copyright 2016 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 #include <grpc/support/port_platform.h> 20 21 #include "src/core/lib/security/credentials/google_default/google_default_credentials.h" 22 23 #include <grpc/support/alloc.h> 24 #include <grpc/support/log.h> 25 #include <grpc/support/string_util.h> 26 27 #include "src/core/lib/gpr/env.h" 28 #include "src/core/lib/gpr/string.h" 29 grpc_get_well_known_google_credentials_file_path_impl(void)30char* grpc_get_well_known_google_credentials_file_path_impl(void) { 31 char* result = nullptr; 32 char* base = gpr_getenv(GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR); 33 if (base == nullptr) { 34 gpr_log(GPR_ERROR, "Could not get " GRPC_GOOGLE_CREDENTIALS_PATH_ENV_VAR 35 " environment variable."); 36 return nullptr; 37 } 38 gpr_asprintf(&result, "%s/%s", base, GRPC_GOOGLE_CREDENTIALS_PATH_SUFFIX); 39 gpr_free(base); 40 return result; 41 } 42