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/*
* $Id$
*
* Copyright (C) 2003 August.Net Services, LLC
* Copyright (C) 2008 1&1 Internet AG
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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; either version 2 of the License, or
* (at your option) any later version
*
* Kamailio 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
*
* History
* -------
* 2003-04-06 initial code written (Greg Fausak/Andy Fullford)
* 2003-04-14 gmtime changed to localtime because mktime later
* expects localtime, changed daylight saving bug
* previously found in mysql module (janakj)
*/
/*! \file
* \brief DB_POSTGRES :: Core
* \ingroup db_postgres
* Module: \ref db_postgres
*/
#include "../../lib/srdb1/db_val.h"
#include "../../lib/srdb1/db_ut.h"
#include "../../dprint.h"
#include "km_pg_con.h"
#include "../../mem/mem.h"
#include "km_val.h"
/*!
* \brief Convert a str to a db value, copy strings
*
* Convert a str to a db value, copy strings.
* The postgresql module uses a custom escape function for BLOBs.
* If the _s is linked in the db_val result, it will be returned zero
* \param _t destination value type
* \param _v destination value
* \param _s source string
* \param _l string length
* \return 0 on success, negative on error
*/
int db_postgres_str2val(const db_type_t _t, db_val_t* _v, const char* _s,
const int _l)
{
/* use common function for non BLOB, NULL setting and input
* parameter checking */
if ( _t != DB1_BLOB || _s == NULL || _v == NULL) {
return db_str2val(_t, _v, _s, _l, 1);
} else {
char * tmp_s = NULL;
LM_DBG("converting BLOB [%.*s]\n", _l, _s);
/*
* The string is stored in new allocated memory, which we could
* not free later thus we need to copy it to some new memory here.
*/
tmp_s = (char*)PQunescapeBytea((unsigned char*)_s,
(size_t*)(void*)&(VAL_BLOB(_v).len));
if(tmp_s==NULL) {
LM_ERR("PQunescapeBytea failed\n");
return -7;
}
VAL_BLOB(_v).s = pkg_malloc(VAL_BLOB(_v).len + 1);
if (VAL_BLOB(_v).s == NULL) {
LM_ERR("no private memory left\n");
PQfreemem(tmp_s);
return -8;
}
LM_DBG("allocate %d+1 bytes memory for BLOB at %p",
VAL_BLOB(_v).len, VAL_BLOB(_v).s);
memcpy(VAL_BLOB(_v).s, tmp_s, VAL_BLOB(_v).len);
PQfreemem(tmp_s);
VAL_BLOB(_v).s[VAL_BLOB(_v).len] = '\0';
VAL_TYPE(_v) = DB1_BLOB;
VAL_FREE(_v) = 1;
LM_DBG("got blob len %d\n", _l);
return 0;
}
}
/*!
* \brief Converting a value to a string
*
* Converting a value to a string, used when converting result from a query
* \param _con database connection
* \param _v source value
* \param _s target string
* \param _len target string length
* \return 0 on success, negative on error
*/
int db_postgres_val2str(const db1_con_t* _con, const db_val_t* _v, char* _s, int* _len)
{
int l, ret, tmp;
int pgret;
char *tmp_s;
size_t tmp_len;
char* old_s;
tmp = db_val2str(_con, _v, _s, _len);
if (tmp < 1)
return tmp;
switch(VAL_TYPE(_v)) {
case DB1_STRING:
l = strlen(VAL_STRING(_v));
if (*_len < (l * 2 + 3)) {
LM_ERR("destination buffer too short for string\n");
return -6;
} else {
old_s = _s;
*_s++ = '\'';
ret = PQescapeStringConn(CON_CONNECTION(_con), _s, VAL_STRING(_v),
l, &pgret);
if(pgret!=0)
{
LM_ERR("PQescapeStringConn failed\n");
return -6;
}
LM_DBG("PQescapeStringConn: in: %d chars,"
" out: %d chars\n", l, ret);
_s += ret;
*_s++ = '\'';
*_s = '\0'; /* FIXME */
*_len = _s - old_s;
return 0;
}
break;
case DB1_STR:
l = VAL_STR(_v).len;
if (*_len < (l * 2 + 3)) {
LM_ERR("destination buffer too short for str\n");
return -7;
} else {
old_s = _s;
*_s++ = '\'';
ret = PQescapeStringConn(CON_CONNECTION(_con), _s, VAL_STRING(_v),
l, &pgret);
if(pgret!=0)
{
LM_ERR("PQescapeStringConn failed \n");
return -7;
}
LM_DBG("PQescapeStringConn: in: %d chars, out: %d chars\n", l, ret);
_s += ret;
*_s++ = '\'';
*_s = '\0'; /* FIXME */
*_len = _s - old_s;
return 0;
}
break;
case DB1_BLOB:
l = VAL_BLOB(_v).len;
/* this estimation is not always correct, thus we need to check later again */
if (*_len < (l * 2 + 3)) {
LM_ERR("destination buffer too short for blob\n");
return -9;
} else {
*_s++ = '\'';
tmp_s = (char*)PQescapeByteaConn(CON_CONNECTION(_con), (unsigned char*)VAL_STRING(_v),
(size_t)l, (size_t*)&tmp_len);
if(tmp_s==NULL)
{
LM_ERR("PQescapeByteaConn failed\n");
return -9;
}
if (tmp_len > *_len) {
LM_ERR("escaped result too long\n");
return -9;
}
memcpy(_s, tmp_s, tmp_len);
PQfreemem(tmp_s);
tmp_len = strlen(_s);
*(_s + tmp_len) = '\'';
*(_s + tmp_len + 1) = '\0';
*_len = tmp_len + 2;
return 0;
}
break;
default:
LM_DBG("unknown data type\n");
return -10;
}
}
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