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/**
* $Id$
*
* Copyright (C) 2011 SpeakUp B.V. (alex@speakup.nl)
*
* 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
*/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "../../mem/mem.h"
#include "../../dprint.h"
#include "../../trim.h"
#include "../../ut.h"
#include "../../lib/kcore/strcommon.h"
#include "sql_trans.h"
#define TR_BUFFER_SIZE 2048
static int _tr_eval_sql_val(pv_value_t *val)
{
int i;
static char _tr_buffer[TR_BUFFER_SIZE];
if(val->flags&PV_TYPE_INT || !(val->flags&PV_VAL_STR)) {
val->rs.s = sint2str(val->ri, &val->rs.len);
val->flags = PV_VAL_STR;
return 0;
}
if(val->rs.len>TR_BUFFER_SIZE/2-1) {
LM_ERR("escape buffer to short");
return -1;
}
_tr_buffer[0] = '\'';
i = escape_common(_tr_buffer+1, val->rs.s, val->rs.len);
_tr_buffer[++i] = '\'';
_tr_buffer[++i] = '\0';
memset(val, 0, sizeof(pv_value_t));
val->flags = PV_VAL_STR;
val->rs.s = _tr_buffer;
val->rs.len = i;
return 0;
}
int tr_eval_sql(struct sip_msg *msg, tr_param_t *tp, int subtype,
pv_value_t *val)
{
static str _sql_null = { "NULL", 4 };
static str _sql_zero = { "0", 1 };
static str _sql_empty = { "''", 2 };
if(val==NULL)
return -1;
switch(subtype) {
case TR_SQL_VAL:
if (val->flags&PV_VAL_NULL) {
val->flags = PV_VAL_STR;
val->rs = _sql_null;
return 0;
} else {
return _tr_eval_sql_val(val);
}
break;
case TR_SQL_VAL_INT:
if (val->flags&PV_VAL_NULL) {
val->flags = PV_VAL_STR;
val->rs = _sql_zero;
return 0;
} else {
return _tr_eval_sql_val(val);
}
break;
case TR_SQL_VAL_STR:
if (val->flags&PV_VAL_NULL) {
val->flags = PV_VAL_STR;
val->rs = _sql_empty;
return 0;
} else {
return _tr_eval_sql_val(val);
}
break;
default:
LM_ERR("unknown subtype %d\n",
subtype);
return -1;
}
return 0;
}
char* tr_parse_sql(str *in, trans_t *t)
{
char *p;
str name;
if(in==NULL || t==NULL)
return NULL;
p = in->s;
name.s = in->s;
t->type = TR_SQL;
t->trf = tr_eval_sql;
/* find next token */
while(is_in_str(p, in) && *p!=TR_PARAM_MARKER && *p!=TR_RBRACKET) p++;
if(*p=='\0') {
LM_ERR("unable to find transformation start: %.*s\n", in->len, in->s);
return NULL;
}
name.len = p - name.s;
trim(&name);
if(name.len==3 && strncasecmp(name.s, "val", 3)==0) {
t->subtype = TR_SQL_VAL;
goto done;
}
if(name.len==7 && strncasecmp(name.s, "val.int", 7)==0) {
t->subtype = TR_SQL_VAL_INT;
goto done;
}
if(name.len==7 && strncasecmp(name.s, "val.str", 7)==0) {
t->subtype = TR_SQL_VAL_STR;
goto done;
}
LM_ERR("unknown transformation: %.*s/%.*s/%d!\n", in->len, in->s,
name.len, name.s, name.len);
return NULL;
done:
t->name = name;
return p;
}
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