4jcraft/targets/minecraft/util/Hasher.cpp

64 lines
2.1 KiB
C++

// #if defined(_WIN32)
// #include <xhash>
// #else
#include <iomanip>
#include <sstream>
// #endif // _WIN32
// #include <openssl/evp.h>
// #include <openssl/types.h>
#include "Hasher.h"
Hasher::Hasher(std::string& salt) { this->salt = salt; }
std::string Hasher::getHash(std::string& name) {
// 4jcraft: stubbed for portability reasons.
//
// The OpenSSL meson is broken on windows and expects winsock to
// be statically linked (which is dumb since we only want libcrypto
// for MD5 hashing), and avoiding a dependency on libcrypto here is
// probably a good thing either way for some platforms.
//
// Given that this class isn't used and im lazy, we're just gonna do
// this until it becomes a problem. This class isnt actually used
// anywhere at the moment anyways so it's whatever.
return "";
#if 0
#if defined(_WIN32)
// 4J Stu - Removed try/catch
// try {
std::string s = std::string(salt).append(name);
// MessageDigest m;
// m = MessageDigest.getInstance("MD5");
// m.update(s.getBytes(), 0, s.length());
// return new BigInteger(1, m.digest()).toString(16);
// TODO 4J Stu - Will this hash us with the same distribution as the MD5?
return toString(hash_value(s));
//}
// catch (NoSuchAlgorithmException e)
//{
// throw new RuntimeException(e);
//}
#else
// adapted from a SSL example
std::string combined = salt + name;
std::string combined_str(combined.begin(), combined.end());
unsigned char result[EVP_MAX_MD_SIZE];
EVP_MD_CTX* md5_ctx = EVP_MD_CTX_new();
EVP_DigestInit_ex(md5_ctx, EVP_md5(), nullptr);
EVP_DigestUpdate(md5_ctx, combined_str.c_str(), combined_str.size());
unsigned int result_len;
EVP_DigestFinal_ex(md5_ctx, result, &result_len);
EVP_MD_CTX_free(md5_ctx);
std::stringstream ss;
for (unsigned int i = 0; i < result_len; i++) {
ss << std::setw(2) << std::setfill('0') << std::hex << (int)result[i];
}
std::string hash_str = ss.str();
return std::string(hash_str.begin(), hash_str.end());
#endif
#endif
}