diff options
Diffstat (limited to 'src/core/lib/security/credentials/google_default/google_default_credentials.cc')
| -rw-r--r-- | src/core/lib/security/credentials/google_default/google_default_credentials.cc | 113 |
1 files changed, 14 insertions, 99 deletions
diff --git a/src/core/lib/security/credentials/google_default/google_default_credentials.cc b/src/core/lib/security/credentials/google_default/google_default_credentials.cc index 03e8cb3b40..38c9175717 100644 --- a/src/core/lib/security/credentials/google_default/google_default_credentials.cc +++ b/src/core/lib/security/credentials/google_default/google_default_credentials.cc @@ -35,6 +35,7 @@ #include "src/core/lib/iomgr/load_file.h" #include "src/core/lib/iomgr/polling_entity.h" #include "src/core/lib/security/credentials/alts/alts_credentials.h" +#include "src/core/lib/security/credentials/alts/check_gcp_environment.h" #include "src/core/lib/security/credentials/google_default/google_default_credentials.h" #include "src/core/lib/security/credentials/jwt/jwt_credentials.h" #include "src/core/lib/security/credentials/oauth2/oauth2_credentials.h" @@ -51,8 +52,9 @@ static grpc_channel_credentials* g_default_credentials = nullptr; static int g_compute_engine_detection_done = 0; static gpr_mu g_state_mu; -static gpr_mu* g_polling_mu; static gpr_once g_once = GPR_ONCE_INIT; +static grpc_core::internal::grpc_gce_tenancy_checker g_gce_tenancy_checker = + grpc_alts_is_running_on_gcp; static void init_default_credentials(void) { gpr_mu_init(&g_state_mu); } @@ -111,103 +113,6 @@ static grpc_channel_credentials_vtable google_default_credentials_vtable = { google_default_credentials_destruct, google_default_create_security_connector, nullptr}; -static void on_compute_engine_detection_http_response(void* user_data, - grpc_error* error) { - compute_engine_detector* detector = - static_cast<compute_engine_detector*>(user_data); - if (error == GRPC_ERROR_NONE && detector->response.status == 200 && - detector->response.hdr_count > 0) { - /* Internet providers can return a generic response to all requests, so - it is necessary to check that metadata header is present also. */ - size_t i; - for (i = 0; i < detector->response.hdr_count; i++) { - grpc_http_header* header = &detector->response.hdrs[i]; - if (strcmp(header->key, "Metadata-Flavor") == 0 && - strcmp(header->value, "Google") == 0) { - detector->success = 1; - break; - } - } - } - gpr_mu_lock(g_polling_mu); - detector->is_done = 1; - GRPC_LOG_IF_ERROR( - "Pollset kick", - grpc_pollset_kick(grpc_polling_entity_pollset(&detector->pollent), - nullptr)); - gpr_mu_unlock(g_polling_mu); -} - -static void destroy_pollset(void* p, grpc_error* e) { - grpc_pollset_destroy(static_cast<grpc_pollset*>(p)); -} - -static int is_stack_running_on_compute_engine() { - compute_engine_detector detector; - grpc_httpcli_request request; - grpc_httpcli_context context; - grpc_closure destroy_closure; - - /* The http call is local. If it takes more than one sec, it is for sure not - on compute engine. */ - grpc_millis max_detection_delay = GPR_MS_PER_SEC; - - grpc_pollset* pollset = - static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size())); - grpc_pollset_init(pollset, &g_polling_mu); - detector.pollent = grpc_polling_entity_create_from_pollset(pollset); - detector.is_done = 0; - detector.success = 0; - - memset(&detector.response, 0, sizeof(detector.response)); - memset(&request, 0, sizeof(grpc_httpcli_request)); - request.host = (char*)GRPC_COMPUTE_ENGINE_DETECTION_HOST; - request.http.path = (char*)"/"; - - grpc_httpcli_context_init(&context); - - grpc_resource_quota* resource_quota = - grpc_resource_quota_create("google_default_credentials"); - grpc_httpcli_get( - &context, &detector.pollent, resource_quota, &request, - grpc_core::ExecCtx::Get()->Now() + max_detection_delay, - GRPC_CLOSURE_CREATE(on_compute_engine_detection_http_response, &detector, - grpc_schedule_on_exec_ctx), - &detector.response); - grpc_resource_quota_unref_internal(resource_quota); - - grpc_core::ExecCtx::Get()->Flush(); - - /* Block until we get the response. This is not ideal but this should only be - called once for the lifetime of the process by the default credentials. */ - gpr_mu_lock(g_polling_mu); - while (!detector.is_done) { - grpc_pollset_worker* worker = nullptr; - if (!GRPC_LOG_IF_ERROR( - "pollset_work", - grpc_pollset_work(grpc_polling_entity_pollset(&detector.pollent), - &worker, GRPC_MILLIS_INF_FUTURE))) { - detector.is_done = 1; - detector.success = 0; - } - } - gpr_mu_unlock(g_polling_mu); - - grpc_httpcli_context_destroy(&context); - GRPC_CLOSURE_INIT(&destroy_closure, destroy_pollset, - grpc_polling_entity_pollset(&detector.pollent), - grpc_schedule_on_exec_ctx); - grpc_pollset_shutdown(grpc_polling_entity_pollset(&detector.pollent), - &destroy_closure); - g_polling_mu = nullptr; - grpc_core::ExecCtx::Get()->Flush(); - - gpr_free(grpc_polling_entity_pollset(&detector.pollent)); - grpc_http_response_destroy(&detector.response); - - return detector.success; -} - /* Takes ownership of creds_path if not NULL. */ static grpc_error* create_default_creds_from_path( char* creds_path, grpc_call_credentials** creds) { @@ -305,7 +210,7 @@ grpc_channel_credentials* grpc_google_default_credentials_create(void) { /* At last try to see if we're on compute engine (do the detection only once since it requires a network test). */ if (!g_compute_engine_detection_done) { - int need_compute_engine_creds = is_stack_running_on_compute_engine(); + int need_compute_engine_creds = g_gce_tenancy_checker(); g_compute_engine_detection_done = 1; if (need_compute_engine_creds) { call_creds = grpc_google_compute_engine_credentials_create(nullptr); @@ -353,6 +258,16 @@ end: return result; } +namespace grpc_core { +namespace internal { + +void set_gce_tenancy_checker_for_testing(grpc_gce_tenancy_checker checker) { + g_gce_tenancy_checker = checker; +} + +} // namespace internal +} // namespace grpc_core + void grpc_flush_cached_google_default_credentials(void) { grpc_core::ExecCtx exec_ctx; gpr_once_init(&g_once, init_default_credentials); |