Adding support for per call credentials in core.

6 files changed, 382 insertions, 33 deletions

diff --git a/test/core/end2end/end2end_tests.h b/test/core/end2end/end2end_tests.h
index 41c6e2ee0c..a61c725aa2 100644
--- a/test/core/end2end/end2end_tests.h
+++ b/test/core/end2end/end2end_tests.h
@@ -41,6 +41,7 @@ typedef struct grpc_end2end_test_config grpc_end2end_test_config;
 
 #define FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION 1
 #define FEATURE_MASK_SUPPORTS_HOSTNAME_VERIFICATION 2
+#define FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS 4
 
 struct grpc_end2end_test_fixture {
   grpc_completion_queue *server_cq;
diff --git a/test/core/end2end/fixtures/chttp2_fake_security.c b/test/core/end2end/fixtures/chttp2_fake_security.c
index 929f1f50db..c1ac9163ed 100644
--- a/test/core/end2end/fixtures/chttp2_fake_security.c
+++ b/test/core/end2end/fixtures/chttp2_fake_security.c
@@ -112,7 +112,9 @@ static void chttp2_init_server_fake_secure_fullstack(
 /* All test configurations */
 
 static grpc_end2end_test_config configs[] = {
-    {"chttp2/fake_secure_fullstack", FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION,
+    {"chttp2/fake_secure_fullstack",
+     FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_fake_secure_fullstack,
      chttp2_init_server_fake_secure_fullstack,
diff --git a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c
index 9c4086d79d..3d6c0cf3f0 100644
--- a/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c
+++ b/test/core/end2end/fixtures/chttp2_simple_ssl_fullstack.c
@@ -124,7 +124,8 @@ static void chttp2_init_server_simple_ssl_secure_fullstack(
 static grpc_end2end_test_config configs[] = {
     {"chttp2/simple_ssl_fullstack",
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-         FEATURE_MASK_SUPPORTS_HOSTNAME_VERIFICATION,
+         FEATURE_MASK_SUPPORTS_HOSTNAME_VERIFICATION |
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_simple_ssl_secure_fullstack,
      chttp2_init_server_simple_ssl_secure_fullstack,
diff --git a/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c b/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c
index e9e1c5f838..b57872f4f0 100644
--- a/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c
+++ b/test/core/end2end/fixtures/chttp2_simple_ssl_with_oauth2_fullstack.c
@@ -129,7 +129,8 @@ static void chttp2_init_server_simple_ssl_secure_fullstack(
 static grpc_end2end_test_config configs[] = {
     {"chttp2/simple_ssl_with_oauth2_fullstack",
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
-         FEATURE_MASK_SUPPORTS_HOSTNAME_VERIFICATION,
+         FEATURE_MASK_SUPPORTS_HOSTNAME_VERIFICATION |
+         FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
      chttp2_create_fixture_secure_fullstack,
      chttp2_init_client_simple_ssl_with_oauth2_secure_fullstack,
      chttp2_init_server_simple_ssl_secure_fullstack,
diff --git a/test/core/end2end/gen_build_json.py b/test/core/end2end/gen_build_json.py
index 1d981cd3ad..c9c2de19f0 100755
--- a/test/core/end2end/gen_build_json.py
+++ b/test/core/end2end/gen_build_json.py
@@ -46,34 +46,40 @@ END2END_FIXTURES = {
     'chttp2_socket_pair_one_byte_at_a_time': False,
 }
 
-# maps tests names to whether they run fine or not (aka, not flaky)
+class TestOptions(object):
+  def __init__(self, flaky=False, secure=False):
+    self.flaky = flaky
+    self.secure = secure
+
+# maps test names to options
 END2END_TESTS = {
-    'bad_hostname': True,
-    'cancel_after_accept': False,
-    'cancel_after_accept_and_writes_closed': True,
-    'cancel_after_invoke': True,
-    'cancel_before_invoke': True,
-    'cancel_in_a_vacuum': True,
-    'census_simple_request': True,
-    'disappearing_server': True,
-    'early_server_shutdown_finishes_inflight_calls': True,
-    'early_server_shutdown_finishes_tags': True,
-    'empty_batch': True,
-    'graceful_server_shutdown': True,
-    'invoke_large_request': False,
-    'max_concurrent_streams': True,
-    'max_message_length': True,
-    'no_op': True,
-    'ping_pong_streaming': True,
-    'request_response_with_binary_metadata_and_payload': True,
-    'request_response_with_metadata_and_payload': True,
-    'request_response_with_payload': True,
-    'request_with_large_metadata': True,
-    'request_with_payload': True,
-    'simple_delayed_request': True,
-    'simple_request': True,
-    'simple_request_with_high_initial_sequence_number': True,
-    'registered_call': True,
+    'bad_hostname': TestOptions(),
+    'cancel_after_accept': TestOptions(flaky=True),
+    'cancel_after_accept_and_writes_closed': TestOptions(),
+    'cancel_after_invoke': TestOptions(),
+    'cancel_before_invoke': TestOptions(),
+    'cancel_in_a_vacuum': TestOptions(),
+    'census_simple_request': TestOptions(),
+    'disappearing_server': TestOptions(),
+    'early_server_shutdown_finishes_inflight_calls': TestOptions(),
+    'early_server_shutdown_finishes_tags': TestOptions(),
+    'empty_batch': TestOptions(),
+    'graceful_server_shutdown': TestOptions(),
+    'invoke_large_request': TestOptions(flaky=False),
+    'max_concurrent_streams': TestOptions(),
+    'max_message_length': TestOptions(),
+    'no_op': TestOptions(),
+    'ping_pong_streaming': TestOptions(),
+    'request_response_with_binary_metadata_and_payload': TestOptions(),
+    'request_response_with_metadata_and_payload': TestOptions(),
+    'request_response_with_payload': TestOptions(),
+    'request_response_with_payload_and_call_creds': TestOptions(secure=True),
+    'request_with_large_metadata': TestOptions(),
+    'request_with_payload': TestOptions(),
+    'simple_delayed_request': TestOptions(),
+    'simple_request': TestOptions(),
+    'simple_request_with_high_initial_sequence_number': TestOptions(),
+    'registered_call': TestOptions(),
 }
 
 
@@ -93,7 +99,7 @@ def main():
               'name': 'end2end_test_%s' % t,
               'build': 'private',
               'language': 'c',
-              'secure': 'no',
+              'secure': 'check' if END2END_TESTS[t].secure else 'no',
               'src': ['test/core/end2end/tests/%s.c' % t],
               'headers': ['test/core/end2end/tests/cancel_test_helpers.h']
           }
@@ -115,7 +121,7 @@ def main():
               'build': 'test',
               'language': 'c',
               'src': [],
-              'flaky': not END2END_TESTS[t],
+              'flaky': END2END_TESTS[t].flaky,
               'deps': [
                   'end2end_fixture_%s' % f,
                   'end2end_test_%s' % t,
@@ -145,7 +151,7 @@ def main():
               ]
           }
       for f in sorted(END2END_FIXTURES.keys()) if not END2END_FIXTURES[f]
-      for t in sorted(END2END_TESTS.keys())]}
+      for t in sorted(END2END_TESTS.keys()) if not END2END_TESTS[t].secure]}
   print simplejson.dumps(json, sort_keys=True, indent=2 * ' ')
 
 
diff --git a/test/core/end2end/tests/request_response_with_payload_and_call_creds.c b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
new file mode 100644
index 0000000000..399a4843bd
--- /dev/null
+++ b/test/core/end2end/tests/request_response_with_payload_and_call_creds.c
@@ -0,0 +1,338 @@
+/*
+ *
+ * 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 "test/core/end2end/end2end_tests.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/byte_buffer.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "test/core/end2end/cq_verifier.h"
+#include "src/core/security/credentials.h"
+#include "src/core/support/string.h"
+
+static const char iam_token[] = "token";
+static const char iam_selector[] = "selector";
+static const char overridden_iam_token[] = "overridden_token";
+static const char overridden_iam_selector[] = "overridden_selector";
+
+typedef enum {
+  NONE,
+  OVERRIDE,
+  DELETE
+} override_mode;
+
+enum { TIMEOUT = 200000 };
+
+static void *tag(gpr_intptr t) { return (void *)t; }
+
+static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
+                                            const char *test_name,
+                                            grpc_channel_args *client_args,
+                                            grpc_channel_args *server_args) {
+  grpc_end2end_test_fixture f;
+  gpr_log(GPR_INFO, "%s/%s", test_name, config.name);
+  f = config.create_fixture(client_args, server_args);
+  config.init_client(&f, client_args);
+  config.init_server(&f, server_args);
+  return f;
+}
+
+static gpr_timespec n_seconds_time(int n) {
+  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+}
+
+static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event *ev;
+  grpc_completion_type type;
+  do {
+    ev = grpc_completion_queue_next(cq, five_seconds_time());
+    GPR_ASSERT(ev);
+    type = ev->type;
+    grpc_event_finish(ev);
+  } while (type != GRPC_QUEUE_SHUTDOWN);
+}
+
+static void shutdown_server(grpc_end2end_test_fixture *f) {
+  if (!f->server) return;
+  grpc_server_shutdown(f->server);
+  grpc_server_destroy(f->server);
+  f->server = NULL;
+}
+
+static void shutdown_client(grpc_end2end_test_fixture *f) {
+  if (!f->client) return;
+  grpc_channel_destroy(f->client);
+  f->client = NULL;
+}
+
+static void end_test(grpc_end2end_test_fixture *f) {
+  shutdown_server(f);
+  shutdown_client(f);
+
+  grpc_completion_queue_shutdown(f->server_cq);
+  drain_cq(f->server_cq);
+  grpc_completion_queue_destroy(f->server_cq);
+  grpc_completion_queue_shutdown(f->client_cq);
+  drain_cq(f->client_cq);
+  grpc_completion_queue_destroy(f->client_cq);
+}
+
+static void test_call_creds_failure(grpc_end2end_test_config config) {
+  grpc_call *c;
+  grpc_credentials *creds = NULL;
+  grpc_end2end_test_fixture f = begin_test(config, __FUNCTION__, NULL, NULL);
+  gpr_timespec deadline = five_seconds_time();
+  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+                               "foo.test.google.fr", deadline);
+  GPR_ASSERT(c);
+
+  /* Try with credentials unfit to be set on a call (channel creds). */
+  creds = grpc_fake_transport_security_credentials_create();
+  GPR_ASSERT(grpc_call_set_credentials(c, creds) != GRPC_CALL_OK);
+  grpc_credentials_release(creds);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+static void request_response_with_payload_and_call_creds(
+    const char *test_name, grpc_end2end_test_config config,
+    override_mode mode) {
+  grpc_call *c;
+  grpc_call *s;
+  gpr_slice request_payload_slice = gpr_slice_from_copied_string("hello world");
+  gpr_slice response_payload_slice = gpr_slice_from_copied_string("hello you");
+  grpc_byte_buffer *request_payload =
+      grpc_byte_buffer_create(&request_payload_slice, 1);
+  grpc_byte_buffer *response_payload =
+      grpc_byte_buffer_create(&response_payload_slice, 1);
+  gpr_timespec deadline = five_seconds_time();
+
+  grpc_end2end_test_fixture f = begin_test(config, test_name, NULL, NULL);
+  cq_verifier *v_client = cq_verifier_create(f.client_cq);
+  cq_verifier *v_server = cq_verifier_create(f.server_cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *request_payload_recv = NULL;
+  grpc_byte_buffer *response_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  char *details = NULL;
+  size_t details_capacity = 0;
+  int was_cancelled = 2;
+  grpc_credentials *creds = NULL;
+
+  c = grpc_channel_create_call(f.client, f.client_cq, "/foo",
+                               "foo.test.google.fr", deadline);
+  GPR_ASSERT(c);
+  creds = grpc_iam_credentials_create(iam_token, iam_selector);
+  GPR_ASSERT(creds != NULL);
+  GPR_ASSERT(grpc_call_set_credentials(c, creds) == GRPC_CALL_OK);
+  switch (mode) {
+    case NONE:
+      break;
+    case OVERRIDE:
+      grpc_credentials_release(creds);
+      creds = grpc_iam_credentials_create(overridden_iam_token,
+                                          overridden_iam_selector);
+      GPR_ASSERT(creds != NULL);
+      GPR_ASSERT(grpc_call_set_credentials(c, creds) == GRPC_CALL_OK);
+      break;
+    case DELETE:
+      GPR_ASSERT(grpc_call_set_credentials(c, NULL) == GRPC_CALL_OK);
+      break;
+  }
+  grpc_credentials_release(creds);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &response_payload_recv;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op++;
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(c, ops, op - ops, tag(1)));
+
+  GPR_ASSERT(GRPC_CALL_OK == grpc_server_request_call(f.server, &s,
+                                                      &call_details,
+                                                      &request_metadata_recv,
+                                                      f.server_cq, tag(101)));
+  cq_expect_completion(v_server, tag(101), GRPC_OP_OK);
+  cq_verify(v_server);
+
+  /* Cannot set creds on the server call object. */
+  GPR_ASSERT(grpc_call_set_credentials(s, NULL) != GRPC_CALL_OK);
+
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = response_payload;
+  op++;
+  op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
+  op->data.send_status_from_server.trailing_metadata_count = 0;
+  op->data.send_status_from_server.status = GRPC_STATUS_UNIMPLEMENTED;
+  op->data.send_status_from_server.status_details = "xyz";
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &request_payload_recv;
+  op++;
+  op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
+  op->data.recv_close_on_server.cancelled = &was_cancelled;
+  op++;
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(s, ops, op - ops, tag(102)));
+
+  cq_expect_completion(v_server, tag(102), GRPC_OP_OK);
+  cq_verify(v_server);
+
+  cq_expect_completion(v_client, tag(1), GRPC_OP_OK);
+  cq_verify(v_client);
+
+  GPR_ASSERT(status == GRPC_STATUS_UNIMPLEMENTED);
+  GPR_ASSERT(0 == strcmp(details, "xyz"));
+  GPR_ASSERT(0 == strcmp(call_details.method, "/foo"));
+  GPR_ASSERT(0 == strcmp(call_details.host, "foo.test.google.fr"));
+  GPR_ASSERT(was_cancelled == 0);
+  GPR_ASSERT(byte_buffer_eq_string(request_payload_recv, "hello world"));
+  GPR_ASSERT(byte_buffer_eq_string(response_payload_recv, "hello you"));
+
+  switch (mode) {
+    case NONE:
+      GPR_ASSERT(contains_metadata(&request_metadata_recv,
+                                   GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                                   iam_token));
+      GPR_ASSERT(contains_metadata(&request_metadata_recv,
+                                   GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                                   iam_selector));
+      break;
+    case OVERRIDE:
+      GPR_ASSERT(contains_metadata(&request_metadata_recv,
+                                   GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                                   overridden_iam_token));
+      GPR_ASSERT(contains_metadata(&request_metadata_recv,
+                                   GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                                   overridden_iam_selector));
+      break;
+    case DELETE:
+      GPR_ASSERT(!contains_metadata(&request_metadata_recv,
+                                    GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                                    iam_token));
+      GPR_ASSERT(!contains_metadata(&request_metadata_recv,
+                                    GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                                    iam_selector));
+      GPR_ASSERT(!contains_metadata(&request_metadata_recv,
+                                    GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY,
+                                    overridden_iam_token));
+      GPR_ASSERT(!contains_metadata(&request_metadata_recv,
+                                    GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY,
+                                    overridden_iam_selector));
+      break;
+  }
+
+  gpr_free(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+  grpc_call_destroy(s);
+
+  cq_verifier_destroy(v_client);
+  cq_verifier_destroy(v_server);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(response_payload);
+  grpc_byte_buffer_destroy(request_payload_recv);
+  grpc_byte_buffer_destroy(response_payload_recv);
+
+  end_test(&f);
+  config.tear_down_data(&f);
+}
+
+void test_request_response_with_payload_and_call_creds(
+    grpc_end2end_test_config config) {
+  request_response_with_payload_and_call_creds(__FUNCTION__, config, NONE);
+}
+
+void test_request_response_with_payload_and_overridden_call_creds(
+    grpc_end2end_test_config config) {
+  request_response_with_payload_and_call_creds(__FUNCTION__, config, OVERRIDE);
+}
+
+void test_request_response_with_payload_and_deleted_call_creds(
+    grpc_end2end_test_config config) {
+  request_response_with_payload_and_call_creds(__FUNCTION__, config, DELETE);
+}
+
+void grpc_end2end_tests(grpc_end2end_test_config config) {
+  if (config.feature_mask & FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS) {
+    test_call_creds_failure(config);
+    test_request_response_with_payload_and_call_creds(config);
+    test_request_response_with_payload_and_overridden_call_creds(config);
+    test_request_response_with_payload_and_deleted_call_creds(config);
+  }
+}
+