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/*
* $Id$
*
* Copyright (C) 2013 Crocodile RCS Ltd
*
* 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 "../../pvar.h"
#include "../../str.h"
#include "../../trim.h"
#include "xhttp_trans.h"
enum _tr_xhttp_type { TR_XHTTP_NONE = 0, TR_XHTTPURL, TR_XHTTPURLQUERYSTRING };
enum _tr_xhttpurl_subtype { TR_XHTTPURL_NONE = 0, TR_XHTTPURL_PATH,
TR_XHTTPURL_QUERYSTRING};
enum _tr_xhttpquerystring_subtype { TR_XHTTPUTLQUERYSTRING_NONE = 0,
TR_XHTTPURLQUERYSTRING_VALUE};
static str _httpurl_str = {0, 0};
static int _httpurl_querystring_pos = 0;
int xhttp_tr_eval_xhttpurl(struct sip_msg *msg, tr_param_t *tp, int subtype,
pv_value_t *val)
{
int pos = 0;
if (val == NULL || val->flags & PV_VAL_NULL)
return -1;
if (!(val->flags & PV_VAL_STR))
{
val->rs.s = int2str(val->ri, &val->rs.len);
val->flags = PV_VAL_STR;
}
if (_httpurl_str.len == 0 || _httpurl_str.len != val->rs.len
|| strncmp(_httpurl_str.s, val->rs.s, val->rs.len) != 0)
{
if (val->rs.len > _httpurl_str.len)
{
if (_httpurl_str.s) pkg_free(_httpurl_str.s);
_httpurl_str.s = (char *) pkg_malloc(
(val->rs.len + 1) * sizeof(char));
if (_httpurl_str.s == NULL)
{
LM_ERR("allocating package memory\n");
memset(&_httpurl_str.s, 0, sizeof(str));
return -1;
}
}
_httpurl_str.len = val->rs.len;
memcpy(_httpurl_str.s, val->rs.s, val->rs.len);
while (pos < val->rs.len && val->rs.s[pos] != '?') pos++;
_httpurl_querystring_pos = (pos >= val->rs.len) ? 0 : pos + 1;
}
switch (subtype)
{
case TR_XHTTPURL_PATH:
val->rs.len = (_httpurl_querystring_pos == 0)
? val->rs.len : _httpurl_querystring_pos - 1;
break;
case TR_XHTTPURL_QUERYSTRING:
if (_httpurl_querystring_pos == 0)
{
val->rs.s[0] = '\0';
val->rs.len = 0;
break;
}
val->rs.s = &val->rs.s[_httpurl_querystring_pos];
val->rs.len = val->rs.len - _httpurl_querystring_pos;
break;
default:
LM_ERR("unknown subtype %d\n", subtype);
return -1;
}
return 0;
}
char *xhttp_tr_parse_url(str *in, trans_t *t)
{
char *p;
str name;
if (in == NULL || in->s == NULL || t == NULL)
return NULL;
p = in->s;
name.s = in->s;
t->type = TR_XHTTPURL;
t->trf = xhttp_tr_eval_xhttpurl;
/* find next token */
while (is_in_str(p, in) && *p != TR_PARAM_MARKER && *p != TR_RBRACKET)
{
p++;
}
if (*p == '\0')
{
LM_ERR("invalid transformation: %.*s\n", in->len, in->s);
goto error;
}
name.len = p - name.s;
trim(&name);
if (name.len == 4 && strncasecmp(name.s, "path", 4) == 0)
{
t->subtype = TR_XHTTPURL_PATH;
goto done;
}
else if (name.len == 11 && strncasecmp(name.s, "querystring", 11) == 0)
{
t->subtype = TR_XHTTPURL_QUERYSTRING;
goto done;
}
LM_ERR("unknown transformation: %.*s/%.*s/%d!\n", in->len, in->s,
name.len, name.s, name.len);
error:
return NULL;
done:
t->name = name;
return p;
}
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