mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
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/** UUID helpers.
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*
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* @author Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
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* @copyright 2014-2021, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLAScommon
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#include <openssl/md5.h>
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#include <villas/uuid.hpp>
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using namespace villas::uuid;
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int villas::uuid::generateFromString(uuid_t out, const std::string &data, const std::string &ns)
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{
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int ret;
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MD5_CTX c;
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ret = MD5_Init(&c);
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if (!ret)
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return -1;
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/* Namespace */
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ret = MD5_Update(&c, (unsigned char *) ns.c_str(), ns.size());
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if (!ret)
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return -1;
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/* Data */
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ret = MD5_Update(&c, (unsigned char *) data.c_str(), data.size());
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if (!ret)
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return -1;
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ret = MD5_Final((unsigned char *) out, &c);
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if (!ret)
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return -1;
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return 0;
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}
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int villas::uuid::generateFromString(uuid_t out, const std::string &data, const uuid_t ns)
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{
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int ret;
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MD5_CTX c;
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ret = MD5_Init(&c);
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if (!ret)
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return -1;
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/* Namespace */
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ret = MD5_Update(&c, (unsigned char *) ns, 16);
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if (!ret)
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return -1;
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/* Data */
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ret = MD5_Update(&c, (unsigned char *) data.c_str(), data.size());
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if (!ret)
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return -1;
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ret = MD5_Final((unsigned char *) out, &c);
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if (!ret)
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return -1;
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return 0;
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}
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int villas::uuid::generateFromJson(uuid_t out, json_t *json, const uuid_t ns)
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{
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char *str = json_dumps(json, JSON_COMPACT | JSON_SORT_KEYS);
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int ret = generateFromString(out, str, ns);
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free(str);
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return ret;
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}
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