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Harald Welte 284c39af2a msc_cipher_mode_compl: Handle CIPH MOD COMPL without L3 message 
According to TS 44.008 Section 3.2.1.31, the "Layer 3 Message Contents"
IE of the BSSMAP Cipher Mode Complete is optional. The BSC may hence
inlcude that IE or not include it.

Without this patch, OsmoMSC is crashing if that IE was missing:

<000a> a_iface_bssap.c:699 Rx BSC DT: 00 03 55 2c 02
<000a> a_iface_bssap.c:629 Rx MSC DT1 BSSMAP CIPHER MODE COMPLETE
<001f> a_iface_bssap.c:91 Found A subscriber for conn_id 1
<000a> a_iface_bssap.c:415 BSC sends cipher mode complete (conn_id=1)
==5611== Invalid read of size 8
==5611==    at 0x128D0F: msc_cipher_mode_compl (osmo_msc.c:159)
==5611==    by 0x114F62: bssmap_rx_ciph_compl.isra.8 (a_iface_bssap.c:432)
==5611==    by 0x113267: sccp_sap_up (a_iface.c:520)

Change-Id: I722f9b468b157b3736918f090daaa9489a6028ee
Closes: OS#2871
 		2018-01-24 23:12:15 +01:00
contrib Enable sanitize for CI tests 2017-12-21 17:18:35 +01:00
debian Migrate from OpenSSL to osmo_get_rand_id() 2017-12-27 11:11:14 +00:00
doc examples: apply mgcp_client vty rename from 'mgcpgw' to 'mgw' 2017-11-08 03:24:13 +00:00
include Remove traces of meas_feed 2018-01-24 14:04:46 +00:00
m4 move openbsc/* to repos root 2017-07-12 23:17:10 +00:00
src msc_cipher_mode_compl: Handle CIPH MOD COMPL without L3 message 2018-01-24 23:12:15 +01:00
tests Fix msc_vlr test results (.err) for new libosmocore GSM48_PDISC names 2018-01-24 22:55:05 +01:00
.gitignore Remove traces of meas_feed 2018-01-24 14:04:46 +00:00
.gitreview update .gitreview to new repo url 2017-08-08 17:26:28 +02:00
.mailmap add .mailmap file for mapping git author name/mail in shortlog 2016-08-08 17:40:28 +00:00
AUTHORS move openbsc/* to repos root 2017-07-12 23:17:10 +00:00
COPYING move openbsc/* to repos root 2017-07-12 23:17:10 +00:00
Makefile.am Remove unneeded .py scripts 2017-12-03 21:14:10 +00:00
README rewrite README 2017-09-06 16:33:41 +02:00
README.vty-tests Remove obsolete ./configure option 2017-11-29 14:24:54 +00:00
configure.ac Migrate from OpenSSL to osmo_get_rand_id() 2017-12-27 11:11:14 +00:00
git-version-gen git-version-gen: look for .git in ./, not ../ 2017-07-12 23:28:38 +00:00
osmoappdesc.py doc/examples: add detailed cs7 config examples 2017-09-07 03:10:36 +02:00

README 

About OsmoMSC
=============

OsmoMSC originated from the OpenBSC project, which started as a minimalistic
all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached
maturity and diversity (including M3UA SIGTRAN and 3G support in the form of
IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
approach to fully independent separate programs as in typical GSM networks.

OsmoMSC was one of the parts split off from the old openbsc.git. Before, it was
the libmsc part of the old OsmoNITB. Since a true A interface and IuCS for 3G
support is available, OsmoMSC exists only as a separate standalone entity.

OsmoMSC exposes
- GSUP towards OsmoHLR (or a MAP proxy);
- A over IP towards a BSC (e.g. OsmoBSC);
- IuCS towards an RNC or HNB-GW (e.g. OsmoHNBGW) for 3G voice;
- MNCC (Mobile Network Call Control derived from GSM TS 04.07);
- SMPP 3.4 (Short Message Peer-to-Peer);
- The Osmocom typical telnet VTY and CTRL interfaces.

Find OsmoMSC issue tracker and wiki online at
https://osmocom.org/projects/osmomsc
https://osmocom.org/projects/osmomsc/wiki