mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-20 09:07:44 +03:00
88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/* Copyright (C) 2021 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <cstdlib>
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#include <string>
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using namespace std;
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#include "functor_str.h"
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#include "funchelpers.h"
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#include "functioncolumn.h"
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#include "vlarray.h"
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using namespace execplan;
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namespace funcexp
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{
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void Func_decode::hash_password(ulong* result, const char* password, uint password_len)
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{
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ulong nr = 1345345333L, add = 7, nr2 = 0x12345671L;
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ulong tmp;
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const char* password_end = password + password_len;
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for (; password < password_end; password++)
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{
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if (*password == ' ' || *password == '\t')
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continue;
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tmp = (ulong)(unsigned char)*password;
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nr ^= (((nr & 63) + add) * tmp) + (nr << 8);
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nr2 += (nr2 << 8) ^ nr;
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add += tmp;
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}
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result[0] = nr & (((ulong)1L << 31) - 1L);
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result[1] = nr2 & (((ulong)1L << 31) - 1L);
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}
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CalpontSystemCatalog::ColType Func_decode::operationType(FunctionParm& fp,
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CalpontSystemCatalog::ColType& resultType)
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{
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return resultType;
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}
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string Func_decode::getStrVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
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CalpontSystemCatalog::ColType&)
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{
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const string& str = parm[0]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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return "";
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}
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const string& password = parm[1]->data()->getStrVal(row, isNull);
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if (isNull)
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{
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return "";
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}
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int nStrLen = str.length();
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int nPassLen = password.length();
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utils::VLArray<char> res(nStrLen + 1);
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memset(res.data(), 0, nStrLen + 1);
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if (!fSeeded)
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{
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hash_password(fSeeds, password.c_str(), nPassLen);
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sql_crypt.init(fSeeds);
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fSeeded = true;
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}
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memcpy(res.data(), str.c_str(), nStrLen);
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sql_crypt.decode(res.data(), nStrLen);
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sql_crypt.reinit();
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return res.data();
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}
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} // namespace funcexp
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