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ssl_utils.cc
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ssl_utils.cc
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/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2016 Couchbase, Inc.
*
* 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 "config.h"
#include <algorithm>
#include <cctype>
#include <openssl/ssl.h>
#include <stdexcept>
#include "ssl_utils.h"
long decode_ssl_protocol(const std::string& protocol) {
/* MB-12359 - Disable SSLv2 & SSLv3 due to POODLE */
long disallow = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3;
std::string minimum(protocol);
std::transform(minimum.begin(), minimum.end(), minimum.begin(), tolower);
if (minimum.empty() || minimum == "tlsv1") {
// nothing
} else if (minimum == "tlsv1.1" || minimum == "tlsv1_1") {
disallow |= SSL_OP_NO_TLSv1;
} else if (minimum == "tlsv1.2" || minimum == "tlsv1_2") {
disallow |= SSL_OP_NO_TLSv1_1 | SSL_OP_NO_TLSv1;
} else {
throw std::invalid_argument("Unknown protocol: " + minimum);
}
return disallow;
}