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/*
*
* 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 <grpc/support/port_platform.h>
#include "src/core/lib/surface/init.h"
#include <limits.h>
#include <string.h>
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/security/context/security_context.h"
#include "src/core/lib/security/credentials/credentials.h"
#include "src/core/lib/security/credentials/plugin/plugin_credentials.h"
#include "src/core/lib/security/security_connector/security_connector.h"
#include "src/core/lib/security/transport/auth_filters.h"
#include "src/core/lib/security/transport/secure_endpoint.h"
#include "src/core/lib/security/transport/security_handshaker.h"
#include "src/core/lib/surface/channel_init.h"
#include "src/core/tsi/transport_security_interface.h"
void grpc_security_pre_init(void) {}
static bool maybe_prepend_client_auth_filter(
grpc_channel_stack_builder* builder, void* arg) {
const grpc_channel_args* args =
grpc_channel_stack_builder_get_channel_arguments(builder);
if (args) {
for (size_t i = 0; i < args->num_args; i++) {
if (0 == strcmp(GRPC_ARG_SECURITY_CONNECTOR, args->args[i].key)) {
return grpc_channel_stack_builder_prepend_filter(
builder, &grpc_client_auth_filter, nullptr, nullptr);
}
}
}
return true;
}
static bool maybe_prepend_server_auth_filter(
grpc_channel_stack_builder* builder, void* arg) {
const grpc_channel_args* args =
grpc_channel_stack_builder_get_channel_arguments(builder);
if (args) {
for (size_t i = 0; i < args->num_args; i++) {
if (0 == strcmp(GRPC_SERVER_CREDENTIALS_ARG, args->args[i].key)) {
return grpc_channel_stack_builder_prepend_filter(
builder, &grpc_server_auth_filter, nullptr, nullptr);
}
}
}
return true;
}
void grpc_register_security_filters(void) {
// Register the auth client with a priority < INT_MAX to allow the authority
// filter -on which the auth filter depends- to be higher on the channel
// stack.
grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, INT_MAX - 1,
maybe_prepend_client_auth_filter, nullptr);
grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, INT_MAX - 1,
maybe_prepend_client_auth_filter, nullptr);
grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX,
maybe_prepend_server_auth_filter, nullptr);
}
void grpc_security_init() { grpc_security_register_handshaker_factories(); }
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