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Fix hangup bug; Juha writes:

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Problem 2 is that doing a local hangup (eg. by writing "H" to the
 dialout device) to a call which is already disconnected results in isdnd
 moving the cfg entry to an illegal state, from which there is no
 recovery. This is tricky because there is no way to synchronize local
 hangup with the remote end (ie. the callee can always hang up at an
 inconvenient time)! Hence, patch-2 alters fsm.c's EV_DRQ state table
 such that the local hangup request is processed or ignored in most
 states, even for disconnected calls.

Submitted by:	Juha-Matti Liukkonen <jml@cubical.fi>
This commit is contained in:
Hellmuth Michaelis 2001-07-21 16:28:28 +00:00
parent 2bc53e1178
commit 03096f2d75
1 changed files with 3 additions and 5 deletions
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8
usr.sbin/i4b/isdnd/fsm.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
* Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -27,11 +27,9 @@
* FSM for isdnd
* -------------
*
* $Id: fsm.c,v 1.19 2000/08/20 08:08:51 hm Exp $
*
* $FreeBSD$
*
* last edit-date: [Mon Dec 13 21:46:07 1999]
* last edit-date: [Sat Jul 21 18:25:48 2001]
*
*---------------------------------------------------------------------------*/
@ -368,7 +366,7 @@ struct state_tab {
/* local requests */
/* EV_TIMO */{{F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_TIMO,ST_IDLE}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}},
/* EV_DRQ */{{F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_DRQ, ST_WAITDISCI}, {F_NcNa,ST_WAITDISCI}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}},
/* EV_DRQ */{{F_NcNa, ST_IDLE}, {F_DRQ, ST_WAITDISCI}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_DRQ, ST_WAITDISCI}, {F_NcNa,ST_WAITDISCI}, {F_NcNa, ST_DOWN}, {F_ill, ST_ILL}, {F_ill, ST_ILL}},
/* EV_CBRQ */{{F_NcNa,ST_ACB_WAITDIAL},{F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_NcNa,ST_ACB_WAITDIAL},{F_NcNa, ST_ACB_DIAL}, {F_NcNa,ST_ACB_DIALFAIL},{F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}},
/* EV_ALRT */{{F_ALRT,ST_ALERT}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}},