1 files changed, 57 insertions, 0 deletions
diff --git a/src/core/lib/security/credentials/alts/check_gcp_environment.h b/src/core/lib/security/credentials/alts/check_gcp_environment.h
new file mode 100644
index 0000000000..aea4cea643
--- /dev/null
+++ b/src/core/lib/security/credentials/alts/check_gcp_environment.h
@@ -0,0 +1,57 @@
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H
+#define GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H
+
+namespace grpc_core {
+namespace internal {
+
+/**
+ * This method is a helper function that reads a file containing system bios
+ * data. Exposed for testing only.
+ *
+ * - bios_file: a file containing BIOS data used to determine GCE tenancy
+ *   information.
+ *
+ * It returns a buffer containing the data read from the file.
+ */
+char* read_bios_file(const char* bios_file);
+
+/**
+ * This method checks if system BIOS data contains Google-specific phrases.
+ * Exposed for testing only.
+ *
+ * - bios_data: a buffer containing system BIOS data.
+ *
+ * It returns true if the BIOS data contains Google-specific phrases, and false
+ * otherwise.
+ */
+bool check_bios_data(const char* bios_data);
+
+}  // namespace internal
+}  // namespace grpc_core
+
+/**
+ * This method checks if a VM (Windows or Linux) is running within Google
+ * compute Engine (GCE) or not. It returns true if the VM is running in GCE and
+ * false otherwise.
+ */
+bool grpc_alts_is_running_on_gcp();
+
+#endif /* GRPC_CORE_LIB_SECURITY_CREDENTIALS_ALTS_CHECK_GCP_ENVIRONMENT_H */