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/*
* $Id: parse_event.c,v 1.2 2005/06/16 11:37:54 miconda Exp $
*
* Event header field body parser.
* The parser was written for Presence Agent module only.
* it recognize presence package only, no sub-packages, no parameters
* It should be replaced by a more generic parser if sub-packages or
* parameters should be parsed too.
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of openser, a free SIP server.
*
* openser 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
*
* openser 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
*
* History:
* --------
* 2003-04-26 ZSW (jiri)
*/
#include "parse_event.h"
#include "../mem/mem.h" /* pkg_malloc, pkg_free */
#include "../dprint.h"
#include <string.h> /* memset */
#include "../trim.h" /* trim_leading */
#include <stdio.h> /* printf */
#include "../ut.h"
#define PRES_STR "presence"
#define PRES_STR_LEN 8
#define PRES_WINFO_STR "presence.winfo"
#define PRES_WINFO_STR_LEN 14
#define PRES_XCAP_CHANGE_STR "xcap-change"
#define PRES_XCAP_CHANGE_STR_LEN 11
#define PRES_SIP_PROFILE_STR "sip-profile"
#define PRES_SIP_PROFILE_STR_LEN 11
static inline char* skip_token(char* _b, int _l)
{
int i = 0;
for(i = 0; i < _l; i++) {
switch(_b[i]) {
case ' ':
case '\r':
case '\n':
case '\t':
case ';':
return _b + i;
}
}
return _b + _l;
}
static inline int event_parser(char* _s, int _l, event_t* _e)
{
str tmp;
char* end;
char buf[128];
tmp.s = _s;
tmp.len = _l;
trim_leading(&tmp);
if (tmp.len == 0) {
LOG(L_ERR, "event_parser(): Empty body\n");
return -1;
}
_e->text.s = tmp.s;
end = skip_token(tmp.s, tmp.len);
_e->text.len = end - tmp.s;
strncpy(buf, tmp.s, tmp.len);
buf[tmp.len] = 0;
if ((_e->text.len == PRES_STR_LEN) &&
!strncasecmp(PRES_STR, tmp.s, _e->text.len)) {
_e->parsed = EVENT_PRESENCE;
} else if ((_e->text.len == PRES_XCAP_CHANGE_STR_LEN) &&
!strncasecmp(PRES_XCAP_CHANGE_STR, tmp.s, _e->text.len)) {
_e->parsed = EVENT_XCAP_CHANGE;
} else if ((_e->text.len == PRES_WINFO_STR_LEN) &&
!strncasecmp(PRES_WINFO_STR, tmp.s, _e->text.len)) {
_e->parsed = EVENT_PRESENCE_WINFO;
} else if ((_e->text.len == PRES_SIP_PROFILE_STR_LEN) &&
!strncasecmp(PRES_SIP_PROFILE_STR, tmp.s, _e->text.len)) {
_e->parsed = EVENT_SIP_PROFILE;
} else {
_e->parsed = EVENT_OTHER;
}
return 0;
}
/*
* Parse Event header field body
*/
int parse_event(struct hdr_field* _h)
{
event_t* e;
if (_h->parsed != 0) {
return 0;
}
e = (event_t*)pkg_malloc(sizeof(event_t));
if (e == 0) {
LOG(L_ERR, "parse_event(): No memory left\n");
return -1;
}
memset(e, 0, sizeof(event_t));
if (event_parser(_h->body.s, _h->body.len, e) < 0) {
LOG(L_ERR, "parse_event(): Error in event_parser\n");
pkg_free(e);
return -2;
}
_h->parsed = (void*)e;
return 0;
}
/*
* Free all memory
*/
void free_event(event_t** _e)
{
if (*_e) pkg_free(*_e);
*_e = 0;
}
/*
* Print structure, for debugging only
*/
void print_event(event_t* _e)
{
printf("===Event===\n");
printf("text : \'%.*s\'\n", _e->text.len, ZSW(_e->text.s));
printf("parsed: %s\n",
(_e->parsed == EVENT_PRESENCE) ? ("EVENT_PRESENCE") : ("EVENT_OTHER"));
printf("===/Event===\n");
}
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