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/*
*
* Copyright 2015 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.
*
*/
#include "test/core/security/oauth2_utils.h"
#include <string.h>
#include <grpc/grpc.h>
#include <grpc/grpc_security.h>
#include <grpc/slice.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include "src/core/lib/security/credentials/credentials.h"
typedef struct {
gpr_mu *mu;
grpc_polling_entity pops;
bool is_done;
char *token;
grpc_credentials_mdelem_array md_array;
grpc_closure closure;
} oauth2_request;
static void on_oauth2_response(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
oauth2_request *request = (oauth2_request *)arg;
char *token = NULL;
grpc_slice token_slice;
if (error != GRPC_ERROR_NONE) {
gpr_log(GPR_ERROR, "Fetching token failed: %s", grpc_error_string(error));
} else {
GPR_ASSERT(request->md_array.size == 1);
token_slice = GRPC_MDVALUE(request->md_array.md[0]);
token = (char *)gpr_malloc(GRPC_SLICE_LENGTH(token_slice) + 1);
memcpy(token, GRPC_SLICE_START_PTR(token_slice),
GRPC_SLICE_LENGTH(token_slice));
token[GRPC_SLICE_LENGTH(token_slice)] = '\0';
}
grpc_credentials_mdelem_array_destroy(exec_ctx, &request->md_array);
gpr_mu_lock(request->mu);
request->is_done = true;
request->token = token;
GRPC_LOG_IF_ERROR(
"pollset_kick",
grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&request->pops),
NULL));
gpr_mu_unlock(request->mu);
}
static void do_nothing(grpc_exec_ctx *exec_ctx, void *unused,
grpc_error *error) {}
char *grpc_test_fetch_oauth2_token_with_credentials(
grpc_call_credentials *creds) {
oauth2_request request;
memset(&request, 0, sizeof(request));
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_closure do_nothing_closure;
grpc_auth_metadata_context null_ctx = {"", "", NULL, NULL};
grpc_pollset *pollset = (grpc_pollset *)gpr_zalloc(grpc_pollset_size());
grpc_pollset_init(pollset, &request.mu);
request.pops = grpc_polling_entity_create_from_pollset(pollset);
request.is_done = false;
GRPC_CLOSURE_INIT(&do_nothing_closure, do_nothing, NULL,
grpc_schedule_on_exec_ctx);
GRPC_CLOSURE_INIT(&request.closure, on_oauth2_response, &request,
grpc_schedule_on_exec_ctx);
grpc_error *error = GRPC_ERROR_NONE;
if (grpc_call_credentials_get_request_metadata(
&exec_ctx, creds, &request.pops, null_ctx, &request.md_array,
&request.closure, &error)) {
// Synchronous result; invoke callback directly.
on_oauth2_response(&exec_ctx, &request, error);
GRPC_ERROR_UNREF(error);
}
grpc_exec_ctx_flush(&exec_ctx);
gpr_mu_lock(request.mu);
while (!request.is_done) {
grpc_pollset_worker *worker = NULL;
if (!GRPC_LOG_IF_ERROR(
"pollset_work",
grpc_pollset_work(&exec_ctx,
grpc_polling_entity_pollset(&request.pops),
&worker, GRPC_MILLIS_INF_FUTURE))) {
request.is_done = true;
}
}
gpr_mu_unlock(request.mu);
grpc_pollset_shutdown(&exec_ctx, grpc_polling_entity_pollset(&request.pops),
&do_nothing_closure);
grpc_exec_ctx_finish(&exec_ctx);
gpr_free(grpc_polling_entity_pollset(&request.pops));
return request.token;
}
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