Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / ext / filters / client_channel / lb_policy / xds / xds_channel_secure.cc

diff --git a/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/lb_policy/xds/xds_channel_secure.cc b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/lb_policy/xds/xds_channel_secure.cc
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+++ b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/lb_policy/xds/xds_channel_secure.cc
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+/*
+ *
+ * Copyright 2018 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 <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/lb_policy/xds/xds_channel.h"
+
+#include <string.h>
+
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/ext/filters/client_channel/client_channel.h"
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/iomgr/sockaddr_utils.h"
+#include "src/core/lib/security/credentials/credentials.h"
+#include "src/core/lib/security/transport/target_authority_table.h"
+#include "src/core/lib/slice/slice_internal.h"
+
+namespace grpc_core {
+
+grpc_channel_args* ModifyXdsBalancerChannelArgs(grpc_channel_args* args) {
+  InlinedVector<const char*, 1> args_to_remove;
+  InlinedVector<grpc_arg, 2> args_to_add;
+  // Substitute the channel credentials with a version without call
+  // credentials: the load balancer is not necessarily trusted to handle
+  // bearer token credentials.
+  grpc_channel_credentials* channel_credentials =
+      grpc_channel_credentials_find_in_args(args);
+  RefCountedPtr<grpc_channel_credentials> creds_sans_call_creds;
+  if (channel_credentials != nullptr) {
+    creds_sans_call_creds =
+        channel_credentials->duplicate_without_call_credentials();
+    GPR_ASSERT(creds_sans_call_creds != nullptr);
+    args_to_remove.emplace_back(GRPC_ARG_CHANNEL_CREDENTIALS);
+    args_to_add.emplace_back(
+        grpc_channel_credentials_to_arg(creds_sans_call_creds.get()));
+  }
+  grpc_channel_args* result = grpc_channel_args_copy_and_add_and_remove(
+      args, args_to_remove.data(), args_to_remove.size(), args_to_add.data(),
+      args_to_add.size());
+  // Clean up.
+  grpc_channel_args_destroy(args);
+  return result;
+}
+
+grpc_channel* CreateXdsBalancerChannel(const char* target_uri,
+                                       const grpc_channel_args& args) {
+  grpc_channel_credentials* creds =
+      grpc_channel_credentials_find_in_args(&args);
+  if (creds == nullptr) {
+    // Build with security but parent channel is insecure.
+    return grpc_insecure_channel_create(target_uri, &args, nullptr);
+  }
+  const char* arg_to_remove = GRPC_ARG_CHANNEL_CREDENTIALS;
+  grpc_channel_args* new_args =
+      grpc_channel_args_copy_and_remove(&args, &arg_to_remove, 1);
+  grpc_channel* channel =
+      grpc_secure_channel_create(creds, target_uri, new_args, nullptr);
+  grpc_channel_args_destroy(new_args);
+  return channel;
+}
+
+}  // namespace grpc_core