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https://git.rwth-aachen.de/acs/public/villas/node/
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uuid: use other uuids as namespace
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parent
bf1285a71a
commit
e81785b2b6
2 changed files with 54 additions and 10 deletions
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@ -203,10 +203,12 @@ size_t strlenp(const char *str);
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int sha1sum(FILE *f, unsigned char *sha1);
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/** Generate an UUID by MD5 hashing the provided string */
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void uuid_generate_from_str(uuid_t out, const std::string &data, const std::string &ns = "");
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int uuid_generate_from_str(uuid_t out, const std::string &data, const std::string &ns = "");
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int uuid_generate_from_str(uuid_t out, const std::string &data, const uuid_t ns);
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/** Generate an UUID by MD5 hashing the serialized representation of the provided JSON object */
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void uuid_generate_from_json(uuid_t out, json_t *json, const std::string &ns = "");
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int uuid_generate_from_json(uuid_t out, json_t *json, const uuid_t ns);
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namespace base64 {
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@ -357,25 +357,67 @@ int sha1sum(FILE *f, unsigned char *sha1)
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return 0;
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}
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void uuid_generate_from_str(uuid_t out, const std::string &data, const std::string &ns)
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int uuid_generate_from_str(uuid_t out, const std::string &data, const std::string &ns)
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{
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std::stringstream ss;
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int ret;
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MD5_CTX c;
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if (!ns.empty())
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ss << ns << "|";
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ret = MD5_Init(&c);
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if (!ret)
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return -1;
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ss << data;
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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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MD5((unsigned char*) ss.str().c_str(), ss.str().size(), (unsigned char *) &out);
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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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void uuid_generate_from_json(uuid_t out, json_t *json, const std::string &ns)
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int uuid_generate_from_str(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 uuid_generate_from_json(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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uuid_generate_from_str(out, str, ns);
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int ret = uuid_generate_from_str(out, str, ns);
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free(str);
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return ret;
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}
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} /* namespace utils */
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