osip_event.c
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/*
The oSIP library implements the Session Initiation Protocol (SIP -rfc3261-)
Copyright (C) 2001-2020 Aymeric MOIZARD amoizard@antisip.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <osip2/internal.h>
#include <osip2/osip.h>
#include "fsm.h"
/* Create a sipevent according to the SIP message buf. */
/* INPUT : char *buf | message as a string. */
/* return NULL if message cannot be parsed */
osip_event_t *osip_parse(const char *buf, size_t length) {
int i;
osip_event_t *se = __osip_event_new(UNKNOWN_EVT, 0);
if (se == NULL)
return NULL;
/* parse message and set up an event */
i = osip_message_init(&(se->sip));
if (i != 0) {
osip_free(se);
return NULL;
}
if (osip_message_parse(se->sip, buf, length) != 0) {
OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_ERROR, NULL, "could not parse message\n"));
osip_message_free(se->sip);
osip_free(se);
return NULL;
} else {
if (se->sip->call_id != NULL && se->sip->call_id->number != NULL) {
OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_INFO3, NULL, "MESSAGE REC. CALLID:%s\n", se->sip->call_id->number));
}
if (MSG_IS_REQUEST(se->sip)) {
if (se->sip->sip_method == NULL || se->sip->req_uri == NULL) {
osip_message_free(se->sip);
osip_free(se);
return NULL;
}
}
se->type = evt_set_type_incoming_sipmessage(se->sip);
return se;
}
}
/* allocates an event from retransmitter. */
/* USED ONLY BY THE STACK. */
/* INPUT : int transactionid | id of the transaction. */
/* INPUT : type_t type | type of event. */
/* returns null on error. */
osip_event_t *__osip_event_new(type_t type, int transactionid) {
osip_event_t *sipevent;
sipevent = (osip_event_t *) osip_malloc(sizeof(osip_event_t));
if (sipevent == NULL)
return NULL;
sipevent->type = type;
sipevent->sip = NULL;
sipevent->transactionid = transactionid;
return sipevent;
}
/* allocates an event from user. */
/* USED ONLY BY THE USER. */
/* INPUT : osip_message_t *sip | sip message for transaction. */
/* returns null on error. */
osip_event_t *osip_new_outgoing_sipmessage(osip_message_t *sip) {
osip_event_t *sipevent;
if (sip == NULL)
return NULL;
if (MSG_IS_REQUEST(sip)) {
if (sip->sip_method == NULL)
return NULL;
if (sip->req_uri == NULL)
return NULL;
}
sipevent = (osip_event_t *) osip_malloc(sizeof(osip_event_t));
if (sipevent == NULL)
return NULL;
sipevent->sip = sip;
sipevent->type = evt_set_type_outgoing_sipmessage(sip);
sipevent->transactionid = 0;
return sipevent;
}
type_t evt_set_type_incoming_sipmessage(osip_message_t *sip) {
if (MSG_IS_REQUEST(sip)) {
if (MSG_IS_INVITE(sip))
return RCV_REQINVITE;
else if (MSG_IS_ACK(sip))
return RCV_REQACK;
return RCV_REQUEST;
} else {
if (MSG_IS_STATUS_1XX(sip))
return RCV_STATUS_1XX;
else if (MSG_IS_STATUS_2XX(sip))
return RCV_STATUS_2XX;
return RCV_STATUS_3456XX;
}
}
type_t evt_set_type_outgoing_sipmessage(osip_message_t *sip) {
if (MSG_IS_REQUEST(sip)) {
if (MSG_IS_INVITE(sip))
return SND_REQINVITE;
if (MSG_IS_ACK(sip))
return SND_REQACK;
return SND_REQUEST;
} else {
if (MSG_IS_STATUS_1XX(sip))
return SND_STATUS_1XX;
else if (MSG_IS_STATUS_2XX(sip))
return SND_STATUS_2XX;
return SND_STATUS_3456XX;
}
}
void osip_event_free(osip_event_t *event) {
if (event != NULL) {
osip_message_free(event->sip);
osip_free(event);
}
}