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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/lib/security/credentials/tls/tls_credentials.h"
#include <cstring>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/security/security_connector/tls/tls_security_connector.h"
#define GRPC_CREDENTIALS_TYPE_TLS "Tls"
namespace {
bool CredentialOptionSanityCheck(const grpc_tls_credentials_options* options,
bool is_client) {
if (options == nullptr) {
gpr_log(GPR_ERROR, "TLS credentials options is nullptr.");
return false;
}
// TODO(ZhenLian): remove this when it is also supported on server side.
if (!is_client && options->server_authorization_check_config() != nullptr) {
gpr_log(GPR_INFO,
"Server's credentials options should not contain server "
"authorization check config.");
}
if (options->server_verification_option() != GRPC_TLS_SERVER_VERIFICATION &&
options->server_authorization_check_config() == nullptr) {
gpr_log(GPR_ERROR,
"Should provider custom verifications if bypassing default ones.");
return false;
}
return true;
}
} // namespace
TlsCredentials::TlsCredentials(
grpc_core::RefCountedPtr<grpc_tls_credentials_options> options)
: grpc_channel_credentials(GRPC_CREDENTIALS_TYPE_TLS),
options_(std::move(options)) {}
TlsCredentials::~TlsCredentials() {}
grpc_core::RefCountedPtr<grpc_channel_security_connector>
TlsCredentials::create_security_connector(
grpc_core::RefCountedPtr<grpc_call_credentials> call_creds,
const char* target_name, const grpc_channel_args* args,
grpc_channel_args** new_args) {
const char* overridden_target_name = nullptr;
tsi_ssl_session_cache* ssl_session_cache = nullptr;
for (size_t i = 0; args != nullptr && i < args->num_args; i++) {
grpc_arg* arg = &args->args[i];
if (strcmp(arg->key, GRPC_SSL_TARGET_NAME_OVERRIDE_ARG) == 0 &&
arg->type == GRPC_ARG_STRING) {
overridden_target_name = arg->value.string;
}
if (strcmp(arg->key, GRPC_SSL_SESSION_CACHE_ARG) == 0 &&
arg->type == GRPC_ARG_POINTER) {
ssl_session_cache =
static_cast<tsi_ssl_session_cache*>(arg->value.pointer.p);
}
}
grpc_core::RefCountedPtr<grpc_channel_security_connector> sc =
grpc_core::TlsChannelSecurityConnector::CreateTlsChannelSecurityConnector(
this->Ref(), options_, std::move(call_creds), target_name,
overridden_target_name, ssl_session_cache);
if (sc == nullptr) {
return nullptr;
}
if (args != nullptr) {
grpc_arg new_arg = grpc_channel_arg_string_create(
const_cast<char*>(GRPC_ARG_HTTP2_SCHEME), const_cast<char*>("https"));
*new_args = grpc_channel_args_copy_and_add(args, &new_arg, 1);
}
return sc;
}
TlsServerCredentials::TlsServerCredentials(
grpc_core::RefCountedPtr<grpc_tls_credentials_options> options)
: grpc_server_credentials(GRPC_CREDENTIALS_TYPE_TLS),
options_(std::move(options)) {}
TlsServerCredentials::~TlsServerCredentials() {}
grpc_core::RefCountedPtr<grpc_server_security_connector>
TlsServerCredentials::create_security_connector(
const grpc_channel_args* /* args */) {
return grpc_core::TlsServerSecurityConnector::
CreateTlsServerSecurityConnector(this->Ref(), options_);
}
/** -- Wrapper APIs declared in grpc_security.h -- **/
grpc_channel_credentials* grpc_tls_credentials_create(
grpc_tls_credentials_options* options) {
if (!CredentialOptionSanityCheck(options, true /* is_client */)) {
return nullptr;
}
return new TlsCredentials(
grpc_core::RefCountedPtr<grpc_tls_credentials_options>(options));
}
grpc_server_credentials* grpc_tls_server_credentials_create(
grpc_tls_credentials_options* options) {
if (!CredentialOptionSanityCheck(options, false /* is_client */)) {
return nullptr;
}
return new TlsServerCredentials(
grpc_core::RefCountedPtr<grpc_tls_credentials_options>(options));
}
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