db_mysql/val.c

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/* 
 * $Id: val.c 5359 2008-12-15 15:07:12Z henningw $ 
 *
 * Copyright (C) 2001-2003 FhG Fokus
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*! \file
 *  \brief DB_MYSQL :: Data conversions
 *  \ingroup db_mysql
 *  Module: \ref db_mysql
 */

#include "../../dprint.h"
#include "../../db/db_ut.h"
#include "val.h"
#include "my_con.h"


/*!
 * \brief Converting a value to a string
 *
 * Converting a value to a string, used when converting result from a query
 * \param _c database connection
 * \param _v source value
 * \param _s target string
 * \param _len target string length
 * \return 0 on success, negative on error
 */
int db_mysql_val2str(const db_con_t* _c, const db_val_t* _v, char* _s, int* _len)
{
   int l, tmp;
   char* old_s;

   tmp = db_val2str(_c, _v, _s, _len);
   if (tmp < 1)
      return tmp;

   switch(VAL_TYPE(_v)) {
   case DB_STRING:
      l = strlen(VAL_STRING(_v));
      if (*_len < (l * 2 + 3)) {
         LM_ERR("destination buffer too short\n");
         return -6;
      } else {
         old_s = _s;
         *_s++ = '\'';
         _s += mysql_real_escape_string(CON_CONNECTION(_c), _s, VAL_STRING(_v), l);
         *_s++ = '\'';
         *_s = '\0'; /* FIXME */
         *_len = _s - old_s;
         return 0;
      }
      break;

   case DB_STR:
      if (*_len < (VAL_STR(_v).len * 2 + 3)) {
         LM_ERR("destination buffer too short\n");
         return -7;
      } else {
         old_s = _s;
         *_s++ = '\'';
         _s += mysql_real_escape_string(CON_CONNECTION(_c), _s, VAL_STR(_v).s, VAL_STR(_v).len);
         *_s++ = '\'';
         *_s = '\0';
         *_len = _s - old_s;
         return 0;
      }
      break;

   case DB_BLOB:
      l = VAL_BLOB(_v).len;
      if (*_len < (l * 2 + 3)) {
         LM_ERR("destination buffer too short\n");
         return -9;
      } else {
         old_s = _s;
         *_s++ = '\'';
         _s += mysql_real_escape_string(CON_CONNECTION(_c), _s, VAL_STR(_v).s, l);
         *_s++ = '\'';
         *_s = '\0';
         *_len = _s - old_s;
         return 0;
      }        
      break;

   default:
      LM_DBG("unknown data type\n");
      return -10;
   }
}