static void send_security_metadata(grpc_exec_ctx *exec_ctx,
grpc_call_element *elem,
grpc_transport_stream_op_batch *batch) {
call_data *calld = elem->call_data;
channel_data *chand = elem->channel_data;
grpc_client_security_context *ctx =
(grpc_client_security_context *)batch->payload
->context[GRPC_CONTEXT_SECURITY]
.value;
grpc_call_credentials *channel_call_creds =
chand->security_connector->request_metadata_creds;
int call_creds_has_md = (ctx != NULL) && (ctx->creds != NULL);
if (channel_call_creds == NULL && !call_creds_has_md) {
/* Skip sending metadata altogether. */
grpc_call_next_op(exec_ctx, elem, batch);
return;
}
if (channel_call_creds != NULL && call_creds_has_md) {
calld->creds = grpc_composite_call_credentials_create(channel_call_creds,
ctx->creds, NULL);
if (calld->creds == NULL) {
grpc_transport_stream_op_batch_finish_with_failure(
exec_ctx, batch,
grpc_error_set_int(
GRPC_ERROR_CREATE_FROM_STATIC_STRING(
"Incompatible credentials set on channel and call."),
GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAUTHENTICATED));
return;
}
} else {
calld->creds = grpc_call_credentials_ref(
call_creds_has_md ? ctx->creds : channel_call_creds);
}
build_auth_metadata_context(&chand->security_connector->base,
chand->auth_context, calld);
grpc_error *cancel_error = set_cancel_func(elem, cancel_get_request_metadata);
if (cancel_error != GRPC_ERROR_NONE) {
grpc_transport_stream_op_batch_finish_with_failure(exec_ctx, batch,
cancel_error);
return;
}
GPR_ASSERT(calld->pollent != NULL);
GRPC_CLOSURE_INIT(&calld->closure, on_credentials_metadata, batch,
grpc_schedule_on_exec_ctx);
grpc_error *error = GRPC_ERROR_NONE;
if (grpc_call_credentials_get_request_metadata(
exec_ctx, calld->creds, calld->pollent, calld->auth_md_context,
&calld->md_array, &calld->closure, &error)) {
// Synchronous return; invoke on_credentials_metadata() directly.
on_credentials_metadata(exec_ctx, batch, error);
GRPC_ERROR_UNREF(error);
}
}
static void send_security_metadata(grpc_exec_ctx *exec_ctx,
grpc_call_element *elem,
grpc_transport_stream_op *op) {
call_data *calld = elem->call_data;
channel_data *chand = elem->channel_data;
grpc_client_security_context *ctx =
(grpc_client_security_context *)op->context[GRPC_CONTEXT_SECURITY].value;
grpc_call_credentials *channel_call_creds =
chand->security_connector->request_metadata_creds;
int call_creds_has_md = (ctx != NULL) && (ctx->creds != NULL);
if (channel_call_creds == NULL && !call_creds_has_md) {
/* Skip sending metadata altogether. */
grpc_call_next_op(exec_ctx, elem, op);
return;
}
if (channel_call_creds != NULL && call_creds_has_md) {
calld->creds = grpc_composite_call_credentials_create(channel_call_creds,
ctx->creds, NULL);
if (calld->creds == NULL) {
grpc_transport_stream_op_finish_with_failure(
exec_ctx, op,
grpc_error_set_int(
GRPC_ERROR_CREATE(
"Incompatible credentials set on channel and call."),
GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAUTHENTICATED));
return;
}
} else {
calld->creds = grpc_call_credentials_ref(
call_creds_has_md ? ctx->creds : channel_call_creds);
}
build_auth_metadata_context(&chand->security_connector->base,
chand->auth_context, calld);
calld->op = *op; /* Copy op (originates from the caller's stack). */
GPR_ASSERT(calld->pollent != NULL);
grpc_call_credentials_get_request_metadata(
exec_ctx, calld->creds, calld->pollent, calld->auth_md_context,
on_credentials_metadata, elem);
}
