You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-10-31 18:30:33 +03:00
88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/* Copyright (C) 2021 MariaDB Corporation
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; version 2 of
|
|
the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include <cstdlib>
|
|
#include <string>
|
|
using namespace std;
|
|
|
|
#include "functor_str.h"
|
|
#include "funchelpers.h"
|
|
#include "functioncolumn.h"
|
|
#include "vlarray.h"
|
|
using namespace execplan;
|
|
|
|
namespace funcexp
|
|
{
|
|
void Func_decode::hash_password(ulong* result, const char* password, uint password_len)
|
|
{
|
|
ulong nr = 1345345333L, add = 7, nr2 = 0x12345671L;
|
|
ulong tmp;
|
|
const char* password_end = password + password_len;
|
|
for (; password < password_end; password++)
|
|
{
|
|
if (*password == ' ' || *password == '\t')
|
|
continue;
|
|
tmp = (ulong)(unsigned char)*password;
|
|
nr ^= (((nr & 63) + add) * tmp) + (nr << 8);
|
|
nr2 += (nr2 << 8) ^ nr;
|
|
add += tmp;
|
|
}
|
|
result[0] = nr & (((ulong)1L << 31) - 1L);
|
|
result[1] = nr2 & (((ulong)1L << 31) - 1L);
|
|
}
|
|
|
|
CalpontSystemCatalog::ColType Func_decode::operationType(FunctionParm& /*fp*/,
|
|
CalpontSystemCatalog::ColType& resultType)
|
|
{
|
|
return resultType;
|
|
}
|
|
|
|
string Func_decode::getStrVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
|
|
CalpontSystemCatalog::ColType&)
|
|
{
|
|
const auto& str = parm[0]->data()->getStrVal(row, isNull);
|
|
if (isNull)
|
|
{
|
|
return "";
|
|
}
|
|
const auto& password = parm[1]->data()->getStrVal(row, isNull);
|
|
if (isNull)
|
|
{
|
|
return "";
|
|
}
|
|
|
|
int nStrLen = str.length();
|
|
int nPassLen = password.length();
|
|
utils::VLArray<char> res(nStrLen + 1);
|
|
memset(res.data(), 0, nStrLen + 1);
|
|
|
|
if (!fSeeded)
|
|
{
|
|
hash_password(fSeeds, password.str(), nPassLen);
|
|
sql_crypt.init(fSeeds);
|
|
fSeeded = true;
|
|
}
|
|
|
|
memcpy(res.data(), str.str(), nStrLen);
|
|
sql_crypt.decode(res.data(), nStrLen);
|
|
sql_crypt.reinit();
|
|
|
|
return res.data();
|
|
}
|
|
|
|
} // namespace funcexp
|