73ef4ff3
 Hu Chunming
提交三方库
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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_fifo.h>
#include <osip2/osip.h>
#include "fsm.h"
static transition_t *fsm_findmethod(type_t type, state_t state, osip_statemachine_t *statemachine);
/* find the transition for state and type in statemachine */
/* return NULL; if transition is not found. */
static transition_t *fsm_findmethod(type_t type, state_t state, osip_statemachine_t *statemachine) {
transition_t *transition;
for (transition = statemachine->transitions; transition != NULL; transition = transition->next) {
if (transition->type == type && transition->state == state)
return transition;
}
return NULL;
}
/* call the right execution method. */
/* return -1 when event must be discarded */
int fsm_callmethod(type_t type, state_t state, osip_statemachine_t *statemachine, void *sipevent, void *transaction) {
transition_t *transition;
transition = fsm_findmethod(type, state, statemachine);
if (transition == NULL) {
/* No transition found for this event */
return OSIP_UNDEFINED_ERROR; /* error */
}
transition->method(transaction, sipevent);
return OSIP_SUCCESS; /* ok */
}
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