void
fsm_init (void)
{
fsm_fcb_t *fcb;
fsmdef_init_dcb(&fsm_dcb, 0, FSMDEF_CALL_TYPE_NONE, NULL, LSM_NO_LINE,
NULL);
fsmdef_init();
fsmb2bcnf_init();
fsmcnf_init();
fsmxfr_init();
fsm_cac_init();
/*
* Initialize the fcbs.
*/
fsm_fcbs = (fsm_fcb_t *) cpr_calloc(FSM_MAX_FCBS, sizeof(fsm_fcb_t));
if (fsm_fcbs == NULL) {
GSM_ERR_MSG(GSM_F_PREFIX"Failed to allcoate FSM FCBs.\n", "fsm_init");
return;
}
FSM_FOR_ALL_CBS(fcb, fsm_fcbs, FSM_MAX_FCBS) {
fsm_init_fcb(fcb, CC_NO_CALL_ID, FSMDEF_NO_DCB, FSM_TYPE_NONE);
}
/**
* This function will process SUBSCRIBED feature NOTIFY messages.
*
* @param[in] msg - pointer to ccsip_sub_not_data_t
*
* @return none
*
* @pre (msg != NULL)
*/
static void sub_process_feature_notify (ccsip_sub_not_data_t *msg, callid_t call_id,
callid_t other_call_id)
{
static const char fname[] = "sub_process_feature_notify";
ccsip_event_data_t *ev_data;
cc_feature_ack_t temp_msg;
/*
* send response to NOTIFY.
*/
(void)sub_int_notify_ack(msg->sub_id, SIP_STATUS_SUCCESS, msg->u.notify_ind_data.cseq);
/*
* if the subscription state is terminated, clean up the subscription.
*/
if (msg->u.notify_ind_data.subscription_state == SUBSCRIPTION_STATE_TERMINATED) {
/*
* post SIPSPI_EV_CC_SUBSCRIPTION_TERMINATED.
* do not force SUB/NOT mgr to cleanup SCB immediately, because we may have to handle digest
* challenges to terminating SUBSCRIBE sent.
*/
(void)sub_int_subscribe_term(msg->sub_id, FALSE, msg->request_id, CC_SUBSCRIPTIONS_REMOTECC);
}
ev_data = msg->u.notify_ind_data.eventData;
msg->u.notify_ind_data.eventData = NULL;
if (ev_data == NULL) {
GSM_ERR_MSG(DEB_F_PREFIX"No body in the NOTIFY message\n",
DEB_F_PREFIX_ARGS(GSM, fname));
/*
* if (no content & subscription state is TERMINATED
* then reset active_feature to NONE.
*/
if (msg->u.notify_ind_data.subscription_state == SUBSCRIPTION_STATE_TERMINATED) {
memset(&temp_msg, 0, sizeof(temp_msg));
temp_msg.msg_id = CC_MSG_FEATURE_ACK;
temp_msg.src_id = CC_SRC_GSM;
temp_msg.call_id = call_id;
fim_process_event((void *)&temp_msg, FALSE);
}
return;
}
// other types of event data is not supported as of now.
free_event_data(ev_data);
}
sm_rcs_t
sm_process_event (sm_table_t *tbl, sm_event_t *event)
{
static const char fname[] = "sm_process_event";
int state_id = event->state;
int event_id = event->event;
sm_rcs_t rc = SM_RC_ERROR;
fsm_fcb_t *fcb = (fsm_fcb_t *) event->data;
cc_feature_t *feat_msg = NULL;
line_t line_id;
fsm_types_t fsm_type;
callid_t call_id;
sm_function_t hdlr; /* cached handler in order to compute its addr once */
/*
* validate the state and event
* and that there is a valid function for this state-event pair.
*/
if ((state_id > tbl->min_state) &&
(state_id < tbl->max_state) &&
(event_id > tbl->min_event) &&
(event_id < tbl->max_event)) {
rc = SM_RC_DEF_CONT;
/*
* Save some paramters for debuging, the event handler may
* free the fcb once returned.
*/
fsm_type = fcb->fsm_type;
call_id = fcb->call_id;
if ((hdlr = tbl->table[tbl->max_event * state_id + event_id]) != NULL) {
FSM_DEBUG_SM(DEB_F_PREFIX"%s %-4d: 0x%08lx: sm entry: (%s:%s)\n",
DEB_F_PREFIX_ARGS(FSM, fname), fsm_type_name(fsm_type), call_id,
tbl->table[tbl->max_event * state_id + event_id],
fsm_state_name(fsm_type, state_id),
cc_msg_name((cc_msgs_t)(event_id)));
rc = hdlr(event);
}
if (rc != SM_RC_DEF_CONT) {
/* For event_id == CC_MSG_FEATURE then display the
* feature associated with it.
*/
if (event_id == CC_MSG_FEATURE) {
feat_msg = (cc_feature_t *) event->msg;
}
line_id = ((cc_feature_t *) event->msg)->line;
DEF_DEBUG(DEB_L_C_F_PREFIX"%-5s :(%s:%s%s)\n",
DEB_L_C_F_PREFIX_ARGS(GSM, line_id, call_id, fname),
fsm_type_name(fsm_type),
fsm_state_name(fsm_type, state_id),
cc_msg_name((cc_msgs_t)(event_id)),
feat_msg ? cc_feature_name(feat_msg->feature_id):" ");
}
}
/*
* Invalid state-event pair.
*/
else {
GSM_ERR_MSG(GSM_F_PREFIX"illegal state-event pair: (%d <-- %d)\n",
fname, state_id, event_id);
rc = SM_RC_ERROR;
}
return rc;
}
void
GSMTask (void *arg)
{
static const char fname[] = "GSMTask";
void *msg;
phn_syshdr_t *syshdr;
boolean release_msg = TRUE;
/*
* Get the GSM message queue handle
* A hack until the tasks in irx are
* CPRized.
*/
gsm_msg_queue = (cprMsgQueue_t) arg;
if (!gsm_msg_queue) {
GSM_ERR_MSG(GSM_F_PREFIX"invalid input, exiting\n", fname);
return;
}
if (platThreadInit("GSMTask") != 0) {
return;
}
/*
* Adjust relative priority of GSM thread.
*/
(void) cprAdjustRelativeThreadPriority(GSM_THREAD_RELATIVE_PRIORITY);
/*
* Initialize all the GSM modules
*/
lsm_init();
fsm_init();
fim_init();
gsm_init();
dcsm_init();
cc_init();
fsmutil_init_shown_calls_ci_map();
/*
* On Win32 platform, the random seed is stored per thread; therefore,
* each thread needs to seed the random number. It is recommended by
* MS to do the following to ensure randomness across application
* restarts.
*/
cpr_srand((unsigned int)time(NULL));
/*
* Cache random numbers for SRTP keys
*/
gsmsdp_cache_crypto_keys();
while (1) {
release_msg = TRUE;
msg = cprGetMessage(gsm_msg_queue, TRUE, (void **) &syshdr);
if (msg) {
switch (syshdr->Cmd) {
case TIMER_EXPIRATION:
gsm_process_timer_expiration(msg);
break;
case GSM_SIP:
case GSM_GSM:
release_msg = gsm_process_msg(syshdr->Cmd, msg);
break;
case DP_MSG_INIT_DIALING:
case DP_MSG_DIGIT_STR:
case DP_MSG_STORE_DIGIT:
case DP_MSG_DIGIT:
case DP_MSG_DIAL_IMMEDIATE:
case DP_MSG_REDIAL:
case DP_MSG_ONHOOK:
case DP_MSG_OFFHOOK:
case DP_MSG_UPDATE:
case DP_MSG_DIGIT_TIMER:
case DP_MSG_CANCEL_OFFHOOK_TIMER:
dp_process_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_B2BCNF_SUBSCRIBE_RESP:
case SUB_MSG_B2BCNF_NOTIFY:
case SUB_MSG_B2BCNF_TERMINATE:
sub_process_b2bcnf_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_FEATURE_SUBSCRIBE_RESP:
case SUB_MSG_FEATURE_NOTIFY:
case SUB_MSG_FEATURE_TERMINATE:
sub_process_feature_msg(syshdr->Cmd, msg);
break;
case SUB_MSG_KPML_SUBSCRIBE:
case SUB_MSG_KPML_TERMINATE:
case SUB_MSG_KPML_NOTIFY_ACK:
case SUB_MSG_KPML_SUBSCRIBE_TIMER:
case SUB_MSG_KPML_DIGIT_TIMER:
kpml_process_msg(syshdr->Cmd, msg);
break;
case REG_MGR_STATE_CHANGE:
gsm_reset();
break;
case THREAD_UNLOAD:
destroy_gsm_thread();
break;
default:
GSM_ERR_MSG(GSM_F_PREFIX"Unknown message\n", fname);
break;
}
cprReleaseSysHeader(syshdr);
if (release_msg == TRUE) {
cprReleaseBuffer(msg);
}
/* Check if there are pending messages for dcsm
* if it in the right state perform its operation
*/
dcsm_process_jobs();
}
}
}
void
gsm_process_timer_expiration (void *msg)
{
static const char fname[] = "gsm_process_timer_expiration";
cprCallBackTimerMsg_t *timerMsg;
void *timeout_msg = NULL;
timerMsg = (cprCallBackTimerMsg_t *) msg;
TMR_DEBUG(DEB_F_PREFIX"Timer %s expired\n", DEB_F_PREFIX_ARGS(GSM, fname), timerMsg->expiredTimerName);
switch (timerMsg->expiredTimerId) {
case GSM_MULTIPART_TONES_TIMER:
case GSM_CONTINUOUS_TONES_TIMER:
lsm_tmr_tones_callback(timerMsg->usrData);
break;
case GSM_ERROR_ONHOOK_TIMER:
fsmdef_error_onhook_timeout(timerMsg->usrData);
break;
case GSM_AUTOANSWER_TIMER:
fsmdef_auto_answer_timeout(timerMsg->usrData);
break;
case GSM_REVERSION_TIMER:
fsmdef_reversion_timeout((callid_t)(long)timerMsg->usrData);
break;
case GSM_CAC_FAILURE_TIMER:
fsm_cac_process_bw_fail_timer(timerMsg->usrData);
break;
case GSM_DIAL_TIMEOUT_TIMER:
dp_dial_timeout(timerMsg->usrData);
break;
case GSM_KPML_INTER_DIGIT_TIMER:
kpml_inter_digit_timer_callback(timerMsg->usrData);
break;
case GSM_KPML_CRITICAL_DIGIT_TIMER:
case GSM_KPML_EXTRA_DIGIT_TIMER:
break;
case GSM_KPML_SUBSCRIPTION_TIMER:
kpml_subscription_timer_callback(timerMsg->usrData);
break;
case GSM_REQ_PENDING_TIMER:
timeout_msg = fsmdef_feature_timer_timeout(
CC_FEATURE_REQ_PEND_TIMER_EXP,
timerMsg->usrData);
break;
case GSM_RINGBACK_DELAY_TIMER:
timeout_msg = fsmdef_feature_timer_timeout(
CC_FEATURE_RINGBACK_DELAY_TIMER_EXP,
timerMsg->usrData);
break;
case GSM_FLASH_ONCE_TIMER:
if (media_timer_callback != NULL) {
(* ((media_timer_callback_fp)(media_timer_callback)))();
}
break;
case GSM_TONE_DURATION_TIMER:
lsm_tone_duration_tmr_callback(timerMsg->usrData);
break;
default:
GSM_ERR_MSG(GSM_F_PREFIX"unknown timer %d\n", fname,
timerMsg->expiredTimerName);
break;
}
/*
* If there is a timer message to be processed by state machine,
* hands it to GSM state machine here.
*/
if (timeout_msg != NULL) {
/* Let state machine handle glare timer expiration */
gsm_process_msg(GSM_GSM, timeout_msg);
cprReleaseBuffer(timeout_msg);
}
}
