OpenBSC December 2011

openbsc@lists.osmocom.org

18 participants
18 discussions

New tools for (U)SIM authentication
by Harald Welte 07 Dec '11

07 Dec '11

Hi! I've committed the following bits and pieces regarding authentication: 1) libosmocore now has a generic core for authentication algorithm implementations. Using this API, even external plugins can register algorithms which are not available in libosmocore itself. libosmocore includes COMP128v1 and (now) MILENAGE 2) a small command-line program "osmo-auc-gen", which can be used to generate authentication vectors from the command line. You hav to specify all the required parameters. For GSM, this is only ki, but for 3G, you also have to specify at least OPC and SQN. osmo-auc-gen is part of libosmocore.git 3) a small pythong script called "osmo-sim-auth.py", available from a new git repository (http://cgit.osmocom.org/cgit/osmo-sim-auth, git://git.osmocom.org/osmo-sim-auth) It is the counterpart for the MS side. It can execute authentication on both SIM and USIM. I've tested the tools with a COMP128v1 SIM and a MILENAGE USIM, it seems to be working fine. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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RFC for VTY documentation
by Holger Hans Peter Freyther 06 Dec '11

06 Dec '11

Hi, my goal is to generate documentation for the VTY, I had a look at quagga but they have a manual process. Right now I have pushed zecke/vty-doc (code + xsd) to libosmocore and a hack to osmo-bsc to invoke it... My plan is to to merge the doc with xslt... and generate some html out of it... For generation I can imagine a new VTY command to dump it to a file or a cli option... comments? feedback? volunteers to make it work and take it from here? holger

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Slightly OT: NanoBTS / OpenBSC question
by Tobias Engel 06 Dec '11

06 Dec '11

Hi, does anybody know when the exact moment in a call is, when the NanoBTS starts forwarding audio from a MS to OpenBSC? Is it always when the "Create Connection" RSL message is sent and the TCP connection was established? (Assuming the channel was set up as traffic channel) Or could it be that the BTS waits for the "Connect" message from the MS? I started thinking about that when I saw that the NanoBTS _never_ sets the "transparent to the BTS" bit in the first byte of RSL messages... Regards, -Tobias

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GPRS/RLC in Wireshark?
by David A. Burgess 05 Dec '11

05 Dec '11

Hello - [My apologies if this message has appeared more than once; I accidentally mailed it previously from the wrong address.] Is there any easy way to analyze Um GPRS/RLC, encapsulated in GSMTAP at the L1/L2 boundary, in Wireshark? I tried just putting the frames coming into L1 into GSMTAP packets, but Wireshark tries to analyze them as LAPDm. There was nothing obvious in the GSMTAP_TYPE_* values to correspond to Um GPRS/RLC, though I admit that I have not tried other values yet. -- David

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Re: RFC: Osmocom developer workshop 2012
by Harald Welte 05 Dec '11

05 Dec '11

Hi! Thinking a bit more about timing, it seems that the second half of March is a good idea. April is a bad idea, at least for the first two weeks, as this is easter holiday time in a lot of German states. This will cause lots of tourists, as well as full hotels, trains, flights, etc. So I'd propose something like four days in the second half of march. Should we try to overlap/extend a weekend? I guess this would help people with e regular dayjob, as not as many holidays would be required. If there are no objections in the next 48 hours, I will talk to C-Base about availability during that timeframe. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Re: OpenBSC Digest, Vol 36, Issue 2
by Dick Rwegaba 03 Dec '11

03 Dec '11

thanks -Alexander Huemer but now i get a c compiler error yet i have installed gcc-4.4_4.4.5-8_kfreebsd-i386(1).deb and libc0.1_2.11.2-10+b1_kfreebsd-i386.deb checking for gcc... no checking for cc... no checking for cl.exe... no configure: error: in `/root/libosmocore': configure: error: no acceptable C compiler found in $PATH See `config.log' for more details root@debian:~/libosmocore# On Fri, Dec 2, 2011 at 12:19 PM, <openbsc-request(a)lists.osmocom.org> wrote: > Send OpenBSC mailing list submissions to > openbsc(a)lists.osmocom.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.osmocom.org/mailman/listinfo/openbsc > or, via email, send a message with subject or body 'help' to > openbsc-request(a)lists.osmocom.org > > You can reach the person managing the list at > openbsc-owner(a)lists.osmocom.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of OpenBSC digest..." > > > Today's Topics: > > 1. Re: Time in MM Info [patch] (Rees, Jim) > 2. Re: Time in MM Info [patch] (Gus Bourg) > 3. Re: Time in MM Info [patch] (Gus Bourg) > 4. error at execution of autoreconf -i (Dick Rwegaba) > 5. Re: error at execution of autoreconf -i (Alexander Huemer) > 6. Re: Time in MM Info [patch] (Harald Welte) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 1 Dec 2011 15:24:55 +0000 > From: "Rees, Jim" <jrees(a)arbor.net> > To: Gus Bourg <gus(a)bourg.net> > Cc: "openbsc(a)lists.osmocom.org" <openbsc(a)lists.osmocom.org> > Subject: Re: Time in MM Info [patch] > Message-ID: <17FE85C3-C5BE-4836-A788-7E1442A444FA(a)arbor.net> > Content-Type: text/plain; charset="iso-8859-1" > > Why not make tzunits a signed quantity and get rid of tzdir? And why 15 > minute units? I realize this is how the bts wants them, but shouldn't the > config file be a bit more user-friendly? > > Also it looks like the indentation is a bit messed up. > > > ------------------------------ > > Message: 2 > Date: Thu, 1 Dec 2011 12:25:39 -0800 > From: Gus Bourg <gus(a)bourg.net> > To: Harald Welte <laforge(a)gnumonks.org> > Cc: openbsc(a)lists.osmocom.org > Subject: Re: Time in MM Info [patch] > Message-ID: > <CAKL=SEo2FJQcVZ+eGPHwKx0PO=6PhB9wWMyni2ELAcnMpKpsbQ(a)mail.gmail.com > > > Content-Type: text/plain; charset="iso-8859-1" > > Hi Harald, > > Thanks for the input. Here's the updated patch. > > Gus > > On Wed, Nov 30, 2011 at 11:47 PM, Harald Welte <laforge(a)gnumonks.org> > wrote: > > Hi Gus, > > > > On Wed, Nov 30, 2011 at 03:13:04PM -0800, Gus Bourg wrote: > >> Attached is a patch to support sending time to the device. > > > > thanks a lot for the patch. > > > > however, some remarks: > > > > 1) We actually do support ranges with negative numbers in the syntax, > > ? after commit 33f0fc3c9565308044c934c9e0c1bb81c1a26311 in libosmocore > > ? you can do something like "timezone <-19-19> (0|15|30|45)" > > ? which I believe would be a more human-friendly way of entering it in > > ? hours and minutes. > > > > 2) the internal storage could thus also be a simple "int timezone", > > ? which gets filled from the hour and minute part of the abovementioned > > ? command syntax. > > > > 3) please make sure to use a default of "cur_time->tm_gmtoff" in case > > ? the config file doesn't use per-BTS timezones. ?So another "int > > ? timezone_bts_specific" member might be applicable. > > > > 4) please make sure to use tab instead of " ? ? ? ?" (sequence of 8 > > ? whitespaces), or use a script that automatically takes care of that. > > > > 5) the "timezone" vty line should only be printed if the user actually > > ? configured it (i.e. timezone_bts_specific == 1). > > > > 6) there needs to be a way to completely remove the timezone statement, > > ? most likely a "no timezone" VTY command in the BTS node. > > > > Regards, > > ? ? ? ?Harald > > > > -- > > - Harald Welte <laforge(a)gnumonks.org> ? ? ? ? ? > http://laforge.gnumonks.org/ > > > ============================================================================ > > "Privacy in residential applications is a desirable marketing option." > > ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?(ETSI EN 300 175-7 Ch. > A6) >

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error at execution of autoreconf -i
by Dick Rwegaba 02 Dec '11

02 Dec '11

can some one help me with a work around? root@debian:~/libosmocore# autoreconf -i Can't exec "aclocal": No such file or directory at /usr/share/autoconf/Autom4te/FileUtils.pm line 326. autoreconf: failed to run aclocal: No such file or directory

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Time in MM Info [patch]
by Gus Bourg 01 Dec '11

01 Dec '11

Attached is a patch to support sending time to the device. It adds two per-bts configuration elements: tzunits and tzdir. tzunits are the number of units from GMT. Each unit represents 15 minutes of time. tzdir is the direction of the units from GMT. tzdir 0 means GMT-tzunits and tzdir 1 means GMT+tzunits. So for example, if you're GMT+1 you want: bts 0 type nanobts band PCS1900 cell_identity 0 location_area_code 1 training_sequence_code 7 base_station_id_code 63 tzunits 4 tzdir 1 ms max power 15 cell reselection hysteresis 4 Thanks, Gus

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OpenBSC December 2011