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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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74 lines
2.2 KiB
74 lines
2.2 KiB
5 years ago
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/*
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*
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* Copyright 2020 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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// This is a sample openSSL engine which tests the openSSL
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// engine plugability with gRPC.
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// This sample engine expects KeyId to be actual PEM encoded
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// key itself and just calls standard openSSL functions.
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#include <openssl/bio.h>
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#include <openssl/engine.h>
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#include <openssl/pem.h>
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#ifndef OPENSSL_IS_BORINGSSL
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#include <stdio.h>
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#include <string.h>
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extern "C" {
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static const char engine_id[] = "libengine_passthrough";
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static const char engine_name[] = "A passthrough engine for private keys";
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static int e_passthrough_idx = -1;
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static int e_passthrough_init(ENGINE* e) {
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if (e_passthrough_idx < 0) {
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e_passthrough_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
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if (e_passthrough_idx < 0) return 0;
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}
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return 1;
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}
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EVP_PKEY* e_passthrough_load_privkey(ENGINE* eng, const char* key_id,
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UI_METHOD* ui_method,
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void* callback_data) {
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EVP_PKEY* pkey = NULL;
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BIO* pem = BIO_new_mem_buf((void*)key_id, (int)(strlen(key_id)));
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if (pem == NULL) return NULL;
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pkey = PEM_read_bio_PrivateKey(pem, NULL, NULL, (void*)"");
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BIO_free(pem);
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return pkey;
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}
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int passthrough_bind_helper(ENGINE* e, const char* id) {
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if (id && strcmp(id, engine_id)) {
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return 0;
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}
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if (!ENGINE_set_id(e, engine_id) || !ENGINE_set_name(e, engine_name) ||
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!ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL) ||
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!ENGINE_set_init_function(e, e_passthrough_init) ||
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!ENGINE_set_load_privkey_function(e, e_passthrough_load_privkey)) {
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return 0;
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}
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return 1;
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}
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IMPLEMENT_DYNAMIC_BIND_FN(passthrough_bind_helper)
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IMPLEMENT_DYNAMIC_CHECK_FN()
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}
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#endif // OPENSSL_IS_BORINGSSL
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