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Richard Mudgett 2045db6a69 Segfault in pri_schedule_del() - ctrl value is invalid. 
Validate the given call pointer in libpri API calls.  If the call pointer
is not an active call record then a complaint message is issued and the
API call aborts.  The call pointer is likely stale.

This patch is defensive.  More information is needed to figure out why
Asterisk still has a call pointer during its hangup sequence.

(closes issue #17522)
(closes issue #18032)
Reported by: schmoozecom
Patches:
      issue_18032_v1.4.patch uploaded by rmudgett (license 664)
Tested by: rmudgett


git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@2015 2fbb986a-6c06-0410-b554-c9c1f0a7f128
2010-10-14 17:09:40 +00:00
build_tools Use the correct branch integrated property when generating the version string. 2009-03-13 01:05:54 +00:00
doc Fix spelling error in PTMP agent FSM files. 2010-09-10 23:15:01 +00:00
asn1_primitive.c Made ASN.1 memory dump also display printable characters. 2009-06-03 22:51:42 +00:00
asn1.h ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
compat.h remove extraneous svn:executable properties 2005-11-29 18:39:18 +00:00
compiler.h Merged revisions 610 via svnmerge from 2008-08-05 22:18:12 +00:00
copy_string.c Merged revisions 610 via svnmerge from 2008-08-05 22:18:12 +00:00
libpri.h Add pri_new_bri_cb() API - Create BRI D-channel with user defined I/O callbacks and data 2010-07-22 17:59:57 +00:00
LICENSE remove extraneous svn:executable properties 2005-11-29 18:39:18 +00:00
Makefile Minor changes to make libpri build on Mac OS X 2010-10-07 04:00:04 +00:00
pri_aoc.c Segfault in pri_schedule_del() - ctrl value is invalid. 2010-10-14 17:09:40 +00:00
pri_cc.c Segfault in pri_schedule_del() - ctrl value is invalid. 2010-10-14 17:09:40 +00:00
pri_facility.c Segfault in pri_schedule_del() - ctrl value is invalid. 2010-10-14 17:09:40 +00:00
pri_facility.h support for sending ETSI advice of charge 2010-05-28 22:34:24 +00:00
pri_internal.h Segfault in pri_schedule_del() - ctrl value is invalid. 2010-10-14 17:09:40 +00:00
pri_q921.h Merge of Q.921 rewrite branch for wider testing. 2010-01-13 19:37:59 +00:00
pri_q931.h PRI links do not retain active calls if the link comes back before T309 expires. 2010-09-13 21:21:37 +00:00
pri.c Segfault in pri_schedule_del() - ctrl value is invalid. 2010-10-14 17:09:40 +00:00
pridump.c PTMP NT mode call reference value ambiguity. 2010-04-19 22:40:41 +00:00
prisched.c BRI PTMP: Active channels not cleared when the interface goes down. 2010-09-13 16:07:24 +00:00
pritest.c pritest hadn't been ported to DAHDI 2010-07-16 22:55:15 +00:00
q921.c PRI links do not retain active calls if the link comes back before T309 expires. 2010-09-13 21:21:37 +00:00
q931.c Segfault in pri_schedule_del() - ctrl value is invalid. 2010-10-14 17:09:40 +00:00
README Merged revisions 311 via svnmerge from 2006-02-15 18:01:03 +00:00
rose_address.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_etsi_aoc.c ETSI Advice Of Charge (AOC) event reporting. 2010-05-28 18:03:38 +00:00
rose_etsi_cc.c Add Call Completion Suppplementary Service 2010-05-26 16:01:10 +00:00
rose_etsi_diversion.c Add COLP support to libpri for ETSI PTP, ETSI PTMP, and Q.SIG. 2009-08-18 23:53:32 +00:00
rose_etsi_ect.c Add COLP support to libpri for ETSI PTP, ETSI PTMP, and Q.SIG. 2009-08-18 23:53:32 +00:00
rose_etsi_mwi.c ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rose_internal.h ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rose_other.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_q931.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_qsig_aoc.c Added Q.SIG Advice-Of-Charge encode/decode routines. 2009-04-21 23:32:13 +00:00
rose_qsig_cc.c Add Call Completion Suppplementary Service 2010-05-26 16:01:10 +00:00
rose_qsig_ct.c ROSE ASN.1 facility encode and decode rewrite of existing messages. 2009-04-21 22:08:45 +00:00
rose_qsig_diversion.c Corrected standard document reference. 2009-08-07 15:53:20 +00:00
rose_qsig_mwi.c ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rose_qsig_name.c Calling name not successfully processed on inbound QSIG PRI calls from Mitel PBX 2010-07-16 16:37:07 +00:00
rose.c Add support to receive ECMA-164 2nd edition OID name ROSE messages. 2010-08-27 15:54:17 +00:00
rose.h ETSI Message Waiting Indication (MWI) support. 2010-05-28 21:50:14 +00:00
rosetest.c Add support to receive ECMA-164 2nd edition OID name ROSE messages. 2010-08-27 15:54:17 +00:00
testprilib.c Merged revisions 610 via svnmerge from 2008-08-05 22:18:12 +00:00
TODO More TODO updates 2006-02-16 19:21:30 +00:00

README 

libpri: An implementation of Primary Rate ISDN

Written by Mark Spencer <markster@digium.com>

What is libpri?
===============

libpri is a C implementation of the Primary Rate ISDN specification.  It was
based on the Bellcore specification SR-NWT-002343 for National ISDN.  As of
May 12, 2001, it has been tested work with NI-2, Nortel DMS-100, and 
Lucent 5E Custom protocols on switches from Nortel and Lucent.

What is the license for libpri?
===============================
libpri is distributed under the terms of the GNU General Public License, 
which permit its use and linking with other GPL'd software only.  
The GNU GPL is included in the file LICENSE in this directory.

As a special exception, libpri may also be linked to the OpenH323
library, so long as the entirity of the derivative work (as defined
within the GPL) is licensed either under the MPL of the OpenH323 license
or the GPL of libpri.

If you wish to use libpri in an application for which the GPL is not 
appropriate (e.g. a proprietary embedded system), licenses for libpri 
under more flexible terms can be readily obtained through Digium, Inc. 
at reasonable cost.


How do I report bugs or contribute?
===================================
For now, contact the author directly.  In the future if there is 
sufficient interest, we will setup a mailing list.

Does anything use this library so far?
======================================
Yes, the Asterisk Open Source PBX does.  http://www.asterisk.org

Also, the Zapata library has hooks for it.  http://www.zapatatelephony.org

Special thanks
==============
Special thanks to Jim Dixon <jim@lambdatel.com> for his help in 
testing and fixing the implementation.