| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/grpc_security.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/cmdline.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/slice.h> |
| #include <grpc/support/sync.h> |
| |
| #include "src/core/lib/security/credentials/composite/composite_credentials.h" |
| #include "src/core/lib/security/credentials/credentials.h" |
| #include "src/core/lib/support/string.h" |
| |
| typedef struct { |
| gpr_mu *mu; |
| grpc_polling_entity pops; |
| int is_done; |
| } synchronizer; |
| |
| static void on_metadata_response(grpc_exec_ctx *exec_ctx, void *user_data, |
| grpc_credentials_md *md_elems, size_t num_md, |
| grpc_credentials_status status) { |
| synchronizer *sync = user_data; |
| if (status == GRPC_CREDENTIALS_ERROR) { |
| fprintf(stderr, "Fetching token failed.\n"); |
| } else { |
| char *token; |
| GPR_ASSERT(num_md == 1); |
| token = gpr_dump_slice(md_elems[0].value, GPR_DUMP_ASCII); |
| printf("\nGot token: %s\n\n", token); |
| gpr_free(token); |
| } |
| gpr_mu_lock(sync->mu); |
| sync->is_done = 1; |
| GRPC_LOG_IF_ERROR( |
| "pollset_kick", |
| grpc_pollset_kick(grpc_polling_entity_pollset(&sync->pops), NULL)); |
| gpr_mu_unlock(sync->mu); |
| } |
| |
| int main(int argc, char **argv) { |
| int result = 0; |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| synchronizer sync; |
| grpc_channel_credentials *creds = NULL; |
| char *service_url = "https://test.foo.google.com/Foo"; |
| grpc_auth_metadata_context context; |
| gpr_cmdline *cl = gpr_cmdline_create("print_google_default_creds_token"); |
| gpr_cmdline_add_string(cl, "service_url", |
| "Service URL for the token request.", &service_url); |
| gpr_cmdline_parse(cl, argc, argv); |
| memset(&context, 0, sizeof(context)); |
| context.service_url = service_url; |
| |
| grpc_init(); |
| |
| creds = grpc_google_default_credentials_create(); |
| if (creds == NULL) { |
| fprintf(stderr, "\nCould not find default credentials.\n\n"); |
| result = 1; |
| goto end; |
| } |
| |
| grpc_pollset *pollset = gpr_malloc(grpc_pollset_size()); |
| grpc_pollset_init(pollset, &sync.mu); |
| sync.pops = grpc_polling_entity_create_from_pollset(pollset); |
| sync.is_done = 0; |
| |
| grpc_call_credentials_get_request_metadata( |
| &exec_ctx, ((grpc_composite_channel_credentials *)creds)->call_creds, |
| &sync.pops, context, on_metadata_response, &sync); |
| |
| gpr_mu_lock(sync.mu); |
| while (!sync.is_done) { |
| grpc_pollset_worker *worker = NULL; |
| if (!GRPC_LOG_IF_ERROR( |
| "pollset_work", |
| grpc_pollset_work(&exec_ctx, |
| grpc_polling_entity_pollset(&sync.pops), &worker, |
| gpr_now(GPR_CLOCK_MONOTONIC), |
| gpr_inf_future(GPR_CLOCK_MONOTONIC)))) |
| sync.is_done = 1; |
| gpr_mu_unlock(sync.mu); |
| grpc_exec_ctx_flush(&exec_ctx); |
| gpr_mu_lock(sync.mu); |
| } |
| gpr_mu_unlock(sync.mu); |
| |
| grpc_exec_ctx_finish(&exec_ctx); |
| |
| grpc_channel_credentials_release(creds); |
| gpr_free(grpc_polling_entity_pollset(&sync.pops)); |
| |
| end: |
| gpr_cmdline_destroy(cl); |
| grpc_shutdown(); |
| return result; |
| } |