Merge with master

1 files changed, 128 insertions, 0 deletions

diff --git a/test/core/security/print_google_default_creds_token.cc b/test/core/security/print_google_default_creds_token.cc
new file mode 100644
index 0000000000..6ea51658e1
--- /dev/null
+++ b/test/core/security/print_google_default_creds_token.cc
@@ -0,0 +1,128 @@
+/*
+ *
+ * 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 <stdio.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/cmdline.h>
+#include <grpc/support/log.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/slice/slice_string_helpers.h"
+#include "src/core/lib/support/string.h"
+
+typedef struct {
+  gpr_mu* mu;
+  grpc_polling_entity pops;
+  bool is_done;
+
+  grpc_credentials_mdelem_array md_array;
+  grpc_closure on_request_metadata;
+} synchronizer;
+
+static void on_metadata_response(void* arg, grpc_error* error) {
+  synchronizer* sync = static_cast<synchronizer*>(arg);
+  if (error != GRPC_ERROR_NONE) {
+    fprintf(stderr, "Fetching token failed: %s\n", grpc_error_string(error));
+  } else {
+    char* token;
+    GPR_ASSERT(sync->md_array.size == 1);
+    token = grpc_slice_to_c_string(GRPC_MDVALUE(sync->md_array.md[0]));
+    printf("\nGot token: %s\n\n", token);
+    gpr_free(token);
+  }
+  gpr_mu_lock(sync->mu);
+  sync->is_done = true;
+  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;
+  ExecCtx _local_exec_ctx;
+  synchronizer sync;
+  grpc_channel_credentials* creds = NULL;
+  const 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");
+  grpc_pollset* pollset = nullptr;
+  grpc_error* error = nullptr;
+  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;
+  }
+
+  memset(&sync, 0, sizeof(sync));
+  pollset = (grpc_pollset*)gpr_zalloc(grpc_pollset_size());
+  grpc_pollset_init(pollset, &sync.mu);
+  sync.pops = grpc_polling_entity_create_from_pollset(pollset);
+  sync.is_done = false;
+  GRPC_CLOSURE_INIT(&sync.on_request_metadata, on_metadata_response, &sync,
+                    grpc_schedule_on_exec_ctx);
+
+  error = GRPC_ERROR_NONE;
+  if (grpc_call_credentials_get_request_metadata(
+          ((grpc_composite_channel_credentials*)creds)->call_creds, &sync.pops,
+          context, &sync.md_array, &sync.on_request_metadata, &error)) {
+    // Synchronous response.  Invoke callback directly.
+    on_metadata_response(&sync, error);
+    GRPC_ERROR_UNREF(error);
+  }
+
+  gpr_mu_lock(sync.mu);
+  while (!sync.is_done) {
+    grpc_pollset_worker* worker = NULL;
+    if (!GRPC_LOG_IF_ERROR(
+            "pollset_work",
+            grpc_pollset_work(grpc_polling_entity_pollset(&sync.pops), &worker,
+                              GRPC_MILLIS_INF_FUTURE)))
+      sync.is_done = true;
+    gpr_mu_unlock(sync.mu);
+    grpc_exec_ctx_flush();
+    gpr_mu_lock(sync.mu);
+  }
+  gpr_mu_unlock(sync.mu);
+
+  grpc_exec_ctx_finish();
+
+  grpc_channel_credentials_release(creds);
+  gpr_free(grpc_polling_entity_pollset(&sync.pops));
+
+end:
+  gpr_cmdline_destroy(cl);
+  grpc_shutdown();
+  return result;
+}