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/*
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*
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* Copyright 2015 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#include "test/core/security/oauth2_utils.h"
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#include <string.h>
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#include <grpc/grpc.h>
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#include <grpc/grpc_security.h>
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#include <grpc/slice.h>
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#include <grpc/support/alloc.h>
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#include <grpc/support/log.h>
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#include <grpc/support/sync.h>
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#include "src/core/lib/iomgr/exec_ctx.h"
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#include "src/core/lib/security/credentials/credentials.h"
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typedef struct {
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gpr_mu* mu;
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grpc_polling_entity pops;
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bool is_done;
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char* token;
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grpc_credentials_mdelem_array md_array;
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grpc_closure closure;
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} oauth2_request;
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static void on_oauth2_response(void* arg, grpc_error* error) {
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oauth2_request* request = static_cast<oauth2_request*>(arg);
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char* token = nullptr;
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grpc_slice token_slice;
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if (error != GRPC_ERROR_NONE) {
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gpr_log(GPR_ERROR, "Fetching token failed: %s", grpc_error_string(error));
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} else {
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GPR_ASSERT(request->md_array.size == 1);
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token_slice = GRPC_MDVALUE(request->md_array.md[0]);
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token = static_cast<char*>(gpr_malloc(GRPC_SLICE_LENGTH(token_slice) + 1));
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memcpy(token, GRPC_SLICE_START_PTR(token_slice),
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GRPC_SLICE_LENGTH(token_slice));
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token[GRPC_SLICE_LENGTH(token_slice)] = '\0';
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}
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grpc_credentials_mdelem_array_destroy(&request->md_array);
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gpr_mu_lock(request->mu);
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request->is_done = true;
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request->token = token;
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GRPC_LOG_IF_ERROR(
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"pollset_kick",
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grpc_pollset_kick(grpc_polling_entity_pollset(&request->pops), nullptr));
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gpr_mu_unlock(request->mu);
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}
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static void do_nothing(void* /*arg*/, grpc_error* /*error*/) {}
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char* grpc_test_fetch_oauth2_token_with_credentials(
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grpc_call_credentials* creds) {
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oauth2_request request;
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memset(&request, 0, sizeof(request));
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grpc_core::ExecCtx exec_ctx;
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grpc_closure do_nothing_closure;
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grpc_auth_metadata_context null_ctx = {"", "", nullptr, nullptr};
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grpc_pollset* pollset =
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static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size()));
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grpc_pollset_init(pollset, &request.mu);
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request.pops = grpc_polling_entity_create_from_pollset(pollset);
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request.is_done = false;
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GRPC_CLOSURE_INIT(&do_nothing_closure, do_nothing, nullptr,
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grpc_schedule_on_exec_ctx);
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GRPC_CLOSURE_INIT(&request.closure, on_oauth2_response, &request,
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grpc_schedule_on_exec_ctx);
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grpc_error* error = GRPC_ERROR_NONE;
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if (creds->get_request_metadata(&request.pops, null_ctx, &request.md_array,
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&request.closure, &error)) {
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// Synchronous result; invoke callback directly.
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on_oauth2_response(&request, error);
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GRPC_ERROR_UNREF(error);
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}
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grpc_core::ExecCtx::Get()->Flush();
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gpr_mu_lock(request.mu);
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while (!request.is_done) {
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grpc_pollset_worker* worker = nullptr;
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if (!GRPC_LOG_IF_ERROR(
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"pollset_work",
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grpc_pollset_work(grpc_polling_entity_pollset(&request.pops),
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&worker, GRPC_MILLIS_INF_FUTURE))) {
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request.is_done = true;
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}
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}
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gpr_mu_unlock(request.mu);
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grpc_pollset_shutdown(grpc_polling_entity_pollset(&request.pops),
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&do_nothing_closure);
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grpc_core::ExecCtx::Get()->Flush();
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grpc_pollset_destroy(grpc_polling_entity_pollset(&request.pops));
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gpr_free(pollset);
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return request.token;
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}
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