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Prevent a CONNECT message from sending a CONNECT ACKNOWLEDGE in the wrong state.

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Filter the processing of the CONNECT message to prevent libpri from
sending a CONNECT ACKNOWLEDGE when the call is in an inappropriate state.
This can happen when we hang up an outgoing call after the other end has
sent a CONNECT but before we have processed the CONNECT.

(issue #17360)
Reported by: shawkris
Patches:
      issue17360_con_ack_v1.4.patch uploaded by rmudgett (license 664)


git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@1961 2fbb986a-6c06-0410-b554-c9c1f0a7f128
This commit is contained in:
Richard Mudgett 2010-09-08 00:10:05 +00:00
parent 4011816ead
commit ad998f6f64
1 changed files with 14 additions and 3 deletions
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17
q931.c
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@ -7500,9 +7500,20 @@ static int post_handle_q931_message(struct pri *ctrl, struct q931_mh *mh, struct
q931_release_complete(ctrl,c,PRI_CAUSE_INVALID_CALL_REFERENCE);
break;
}
if (c->ourcallstate == Q931_CALL_STATE_ACTIVE) {
q931_status(ctrl, c, PRI_CAUSE_WRONG_MESSAGE);
switch (c->ourcallstate) {
case Q931_CALL_STATE_CALL_INITIATED:
case Q931_CALL_STATE_OVERLAP_SENDING:
case Q931_CALL_STATE_OUTGOING_CALL_PROCEEDING:
case Q931_CALL_STATE_CALL_DELIVERED:
case Q931_CALL_STATE_CALL_PRESENT:
case Q931_CALL_STATE_CALL_RECEIVED:
case Q931_CALL_STATE_INCOMING_CALL_PROCEEDING:
case Q931_CALL_STATE_OVERLAP_RECEIVING:
/* Accept CONNECT in these states. */
break;
default:
q931_status(ctrl, c, PRI_CAUSE_WRONG_CALL_STATE);
return 0;
}
ctrl->ev.e = PRI_EVENT_ANSWER;
@ -7525,7 +7536,6 @@ static int post_handle_q931_message(struct pri *ctrl, struct q931_mh *mh, struct
if (c->cis_auto_disconnect && c->cis_call) {
/* Make sure WE release when we initiate a signalling only connection */
q931_hangup(ctrl, c, PRI_CAUSE_NORMAL_CLEARING);
break;
} else {
c->incoming_ct_state = INCOMING_CT_STATE_IDLE;
@ -7538,6 +7548,7 @@ static int post_handle_q931_message(struct pri *ctrl, struct q931_mh *mh, struct
return Q931_RES_HAVEEVENT;
}
break;
case Q931_FACILITY:
if (c->newcall) {
q931_release_complete(ctrl,c,PRI_CAUSE_INVALID_CALL_REFERENCE);