OpenBSC December 2015

openbsc@lists.osmocom.org

17 participants
40 discussions

osmobts multiple bts
by stanley lary 24 Dec '15

24 Dec '15

Hi, I have followed the steps as in Multi-BTS with Osmocom and a single UmTRX <http://umtrx.org/multi-bts-with-osmocom-and-a-single-umtrx/> but I wasn't able to get the right results. I was able to get both TX transmitting the broadcast channel but when I try to connect my phone, only BTS0 works fine. When I try to change the BTS unit_id, I noticed that only the BTS having the lower unit_id would work while the other one only transmits broadcast signals (ex: unit_id 1801 works if I have 1801 and 1802). Any ideas what could be the problem ? Thank you, <http://umtrx.org/multi-bts-with-osmocom-and-a-single-umtrx/>

1 0

osmo-iuh update
by Harald Welte 23 Dec '15

23 Dec '15

FYI: Last night I a) merged the SCTP support for libosmo-netif to master b) moved the sua code from osmo-iuh into the libosmo-sccp repository, where we now build a shared libosmo-sigtran.so, which will be linked by the MSC, SGSN and HNB-GW code for the IuCS/IuPS interface. Unlike the spec demands, we will not use SCCP in M3UA in SCTP here, but will use SUA in SCTP as a simplification. Furthermore, the SUA code in libosmo-sigtran does not yet a) fully implement all the correct state machine transitions and inactivity timers (this is to be done) b) implement the ASP management state machines This is done as a short-cut as we initially only want to communicate between our own network elements. What's important is that we can use wireshark for decoding the protocol stacking that we use, and that the SCCP USER SAP is specified in a way that will enable us to put SCCP+M3UA or other sigtran dialects underneath the RANAP code in the future, as needed. Regards, Harald -- - Harald Welte <hwelte(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Directors: Holger Freyther, Harald Welte

3 2

osmo-iuh: fix Makefile.am
by Alexander Huemer 23 Dec '15

23 Dec '15

This patch fixes the build at least for me after $ git clean -xfd

2 5

ffasn1c in osmo-iuh?
by Neels Hofmeyr 22 Dec '15

22 Dec '15

Hi, so in osmo-iuh, we're using the libre asn1c, the generated sources found in e.g. src/hnbap/. But I do find the dirs: ./asn1/rua/ffasn1c ./asn1/ranap/ffasn1c ./asn1/hnbap/ffasn1c that kind of look like we were using the ffasn1c compiler. Those are obsolete, right? Remove? ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Holger Freyther, Harald Welte

2 1

[PATCH 1/2] bitvec: Add get/set byte sequences
by Jacob Erlbeck 21 Dec '15

21 Dec '15

The new functions bitvec_get_bytes and bitvec_set_bytes copy byte sequences from bitvecs to uint8_t arrays and vice versa. While the bytes in the bitvecs do not need to be aligned, the uint8_t arrays always are. In case the bytes in the bitvec are aligned, the implementation uses memcpy. Note that the implementation like the other existing functions assume MSB first encoding. Sponsored-by: On-Waves ehf --- include/osmocom/core/bitvec.h | 2 ++ src/bitvec.c | 75 +++++++++++++++++++++++++++++++++++++++++++ tests/Makefile.am | 9 ++++-- tests/testsuite.at | 6 ++++ 4 files changed, 90 insertions(+), 2 deletions(-) diff --git a/include/osmocom/core/bitvec.h b/include/osmocom/core/bitvec.h index 62e2e7b..445730e 100644 --- a/include/osmocom/core/bitvec.h +++ b/include/osmocom/core/bitvec.h @@ -63,5 +63,7 @@ int bitvec_set_uint(struct bitvec *bv, unsigned int in, int count); int bitvec_get_uint(struct bitvec *bv, int num_bits); int bitvec_find_bit_pos(const struct bitvec *bv, unsigned int n, enum bit_value val); int bitvec_spare_padding(struct bitvec *bv, unsigned int up_to_bit); +int bitvec_get_bytes(struct bitvec *bv, uint8_t *bytes, int count); +int bitvec_set_bytes(struct bitvec *bv, const uint8_t *bytes, int count); /*! @} */ diff --git a/src/bitvec.c b/src/bitvec.c index 8da5a48..726a768 100644 --- a/src/bitvec.c +++ b/src/bitvec.c @@ -1,6 +1,7 @@ /* bit vector utility routines */ /* (C) 2009 by Harald Welte <laforge(a)gnumonks.org> + * (C) 2015 by Sysmocom s.f.m.c. GmbH * * All Rights Reserved * @@ -30,6 +31,7 @@ #include <errno.h> #include <stdint.h> +#include <string.h> #include <osmocom/core/bitvec.h> @@ -261,4 +263,77 @@ int bitvec_find_bit_pos(const struct bitvec *bv, unsigned int n, return -1; } +/*! \brief get multiple bytes from current pos + * Assumes MSB first encoding. + * \param[in] bv bit vector + * \param[in] bytes array + * \param[in] count number of bytes to copy + */ +int bitvec_get_bytes(struct bitvec *bv, uint8_t *bytes, int count) +{ + int byte_offs = bytenum_from_bitnum(bv->cur_bit); + int bit_offs = bv->cur_bit % 8; + uint8_t c, last_c; + int i; + uint8_t *src; + + if (byte_offs + count + (bit_offs ? 1 : 0) > bv->data_len) + return -EINVAL; + + if (bit_offs == 0) { + memcpy(bytes, bv->data + byte_offs, count); + } else { + src = bv->data + byte_offs; + last_c = *(src++); + for (i = count; i > 0; i--) { + c = *(src++); + *(bytes++) = + (last_c << bit_offs) | + (c >> (8 - bit_offs)); + last_c = c; + } + } + + bv->cur_bit += count * 8; + return 0; +} + +/*! \brief set multiple bytes at current pos + * Assumes MSB first encoding. + * \param[in] bv bit vector + * \param[in] bytes array + * \param[in] count number of bytes to copy + */ +int bitvec_set_bytes(struct bitvec *bv, const uint8_t *bytes, int count) +{ + int byte_offs = bytenum_from_bitnum(bv->cur_bit); + int bit_offs = bv->cur_bit % 8; + uint8_t c, last_c; + int i; + uint8_t *dst; + + if (byte_offs + count + (bit_offs ? 1 : 0) > bv->data_len) + return -EINVAL; + + if (bit_offs == 0) { + memcpy(bv->data + byte_offs, bytes, count); + } else if (count > 0) { + dst = bv->data + byte_offs; + /* Get lower bits of first dst byte */ + last_c = *dst >> (8 - bit_offs); + for (i = count; i > 0; i--) { + c = *(bytes++); + *(dst++) = + (last_c << (8 - bit_offs)) | + (c >> bit_offs); + last_c = c; + } + /* Overwrite lower bits of N+1 dst byte */ + *dst = (*dst & ((1 << (8 - bit_offs)) - 1)) | + (last_c << (8 - bit_offs)); + } + + bv->cur_bit += count * 8; + return 0; +} /*! @} */ diff --git a/tests/Makefile.am b/tests/Makefile.am index 3dc9bd9..0d220e8 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -10,7 +10,8 @@ check_PROGRAMS = timer/timer_test sms/sms_test ussd/ussd_test \ kasumi/kasumi_test logging/logging_test fr/fr_test \ loggingrb/loggingrb_test strrb/strrb_test \ vty/vty_test comp128/comp128_test utils/utils_test \ - smscb/gsm0341_test stats/stats_test + smscb/gsm0341_test stats/stats_test \ + bitvec/bitvec_test if ENABLE_MSGFILE check_PROGRAMS += msgfile/msgfile_test @@ -37,6 +38,9 @@ auth_milenage_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/sr bits_bitrev_test_SOURCES = bits/bitrev_test.c bits_bitrev_test_LDADD = $(top_builddir)/src/libosmocore.la +bitvec_bitvec_test_SOURCES = bitvec/bitvec_test.c +bitvec_bitvec_test_LDADD = $(top_builddir)/src/libosmocore.la + conv_conv_test_SOURCES = conv/conv_test.c conv_conv_test_LDADD = $(top_builddir)/src/libosmocore.la @@ -124,7 +128,8 @@ EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE) \ fr/fr_test.ok loggingrb/logging_test.ok \ loggingrb/logging_test.err strrb/strrb_test.ok \ vty/vty_test.ok comp128/comp128_test.ok \ - utils/utils_test.ok stats/stats_test.ok + utils/utils_test.ok stats/stats_test.ok \ + bitvec/bitvec_test.ok DISTCLEANFILES = atconfig diff --git a/tests/testsuite.at b/tests/testsuite.at index a542798..4a3fc0d 100644 --- a/tests/testsuite.at +++ b/tests/testsuite.at @@ -21,6 +21,12 @@ cat $abs_srcdir/bits/bitrev_test.ok > expout AT_CHECK([$abs_top_builddir/tests/bits/bitrev_test], [0], [expout]) AT_CLEANUP +AT_SETUP([bitvec]) +AT_KEYWORDS([bitvec]) +cat $abs_srcdir/bitvec/bitvec_test.ok > expout +AT_CHECK([$abs_top_builddir/tests/bitvec/bitvec_test], [0], [expout], [ignore]) +AT_CLEANUP + AT_SETUP([conv]) AT_KEYWORDS([conv]) cat $abs_srcdir/conv/conv_test.ok > expout -- 1.9.1

1 2

[PATCH openggsn 0/4] add and update gtp-kernel support to openggsn
by Andreas Schultz 21 Dec '15

21 Dec '15

This series imports Pablo Neira Ayuso original gtp-kernel support patch unmodified to master and applies some fixes ontop of it. The last patch in the series then add network namespace support to it. This state is in sync with gtp-kernel patch I posted a few minutes ago. Andreas -- Andreas Schultz (3): ggsn: update gpt-kernel logging to libosmocore ggsn: fix autotool pkg-config invokation ggsn: add network namespace support Pablo Neira Ayuso (1): ggsn: add support for GTP kernel data encapsulation configure.ac | 15 ++++ ggsn/Makefile.am | 11 ++- ggsn/cmdline.c | 48 +++++++++- ggsn/cmdline.ggo | 4 + ggsn/cmdline.h | 8 ++ ggsn/ggsn.c | 52 ++++++++++- ggsn/gtp-kernel.c | 258 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ ggsn/gtp-kernel.h | 53 +++++++++++ lib/Makefile.am | 4 +- lib/netns.c | 135 ++++++++++++++++++++++++++++ lib/netns.h | 26 ++++++ 11 files changed, 607 insertions(+), 7 deletions(-) create mode 100644 ggsn/gtp-kernel.c create mode 100644 ggsn/gtp-kernel.h create mode 100644 lib/netns.c create mode 100644 lib/netns.h -- 2.5.0

4 10

Re: PySIM: SW match failed
by Florian 15 Dec '15

15 Dec '15

On Thu Nov 5 09:05:15 UTC 2015, Harald Welte wrote: >> RuntimeError: SW match failed ! Expected 9000 and got 6a86. > According to ISO 7816-4, this 6a86 means 'incorrect P1 or P2 > parameter'. >> At this point I don't have any more ideas what to try, if anyone would >> have any suggestions I would apreciate it. > Please activate (or hack some code for) tracing the actual APDUs that > pySim excahnges with the card. IIRC, pySim already has that option. > Once you see the raw APDUs, you can compare their encoding > (particularly > P1/P2) with those described in the relevant ETSI/3GPP (U)SIM > specifications. I enhanced my local copy of pySim (zecke/tmp) to show the raw PDUs. And I added a method to check the Status of the PIN and ADM register. On one card I messed up the ADM, so pySim-prog.py shows whey query for SIM 1: > send_apdu_raw -> 00200001 < received status word 63c3 So that is SW1='63' with SW2='CX': Counter (verification failed: 'X' indicates the number of further allowed retries Which means I have three more attempts for the PIN1, but > send_apdu_raw -> 0020000A < received status word 63c0 Ahhrg, I do not have any additional attempt to verify the ADM-Key. Trying to verify ADM results in > send_apdu_raw -> 0020000A083132333435363738 < received status word 6983 an ugly SW1='69' with SW2='83': Authentication method blocked. So I can no longer verify the ADM-Key on that card. --> Is there any way to unblock the card? On the second card I was able to successfully verify the ADM and change the IMSI... Cheers, Flo

4 4

[PATCH] gtphub: add to debian build
by Neels Hofmeyr 14 Dec '15

14 Dec '15

By the example of osmo-sgsn, package osmo-gtphub for debian. Sponsored-by: On-Waves ehi --- debian/control | 14 +++ debian/osmocom-gtphub.default | 2 + debian/osmocom-gtphub.examples | 1 + debian/osmocom-gtphub.init | 150 +++++++++++++++++++++++ debian/osmocom-gtphub.install | 1 + debian/rules | 1 + openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg | 23 ++++ 7 files changed, 192 insertions(+) create mode 100644 debian/osmocom-gtphub.default create mode 100644 debian/osmocom-gtphub.examples create mode 100755 debian/osmocom-gtphub.init create mode 100644 debian/osmocom-gtphub.install create mode 100644 openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg diff --git a/debian/control b/debian/control index 2447d29..53b6908 100644 --- a/debian/control +++ b/debian/control @@ -50,6 +50,12 @@ Depends: ${shlibs:Depends}, ${misc:Depends} Description: Osmocom Base Station Controller Network Address Translation Network address translation for BSC. +Package: osmocom-gtphub +Architecture: any +Depends: ${shlibs:Depends}, ${misc:Depends} +Description: Osmocom GTP hub + Proxy for comms between SGSN and GGSN. + Package: osmocom-bsc-dbg Architecture: any Section: debug @@ -105,3 +111,11 @@ Priority: extra Depends: osmocom-bsc-nat (= ${binary:Version}), ${misc:Depends} Description: Debug symbols for the OpenBSC Network Address Translation Make debugging possible + +Package: osmocom-gtphub-dbg +Architecture: any +Section: debug +Priority: extra +Depends: osmocom-gtphub (= ${binary:Version}), ${misc:Depends} +Description: Debug symbols for Osmocom GTP hub + Make debugging possible diff --git a/debian/osmocom-gtphub.default b/debian/osmocom-gtphub.default new file mode 100644 index 0000000..6af82da --- /dev/null +++ b/debian/osmocom-gtphub.default @@ -0,0 +1,2 @@ +CONFIG_FILE="/etc/osmocom/osmo-gtphub.cfg" + diff --git a/debian/osmocom-gtphub.examples b/debian/osmocom-gtphub.examples new file mode 100644 index 0000000..48c2dc0 --- /dev/null +++ b/debian/osmocom-gtphub.examples @@ -0,0 +1 @@ +openbsc/doc/examples/osmo-gtphub diff --git a/debian/osmocom-gtphub.init b/debian/osmocom-gtphub.init new file mode 100755 index 0000000..4dc67b3 --- /dev/null +++ b/debian/osmocom-gtphub.init @@ -0,0 +1,150 @@ +#!/bin/sh +### BEGIN INIT INFO +# Provides: osmo-gtphub +# Required-Start: $network $local_fs +# Required-Stop: +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: Osmocom GTP hub +# Description: Osmocom GTP hub +### END INIT INFO + +# Author: Neels Hofmeyr <nhofmeyr(a)sysmocom.de> + +# PATH should only include /usr/* if it runs after the mountnfs.sh script +PATH=/sbin:/usr/sbin:/bin:/usr/bin +NAME=osmo-gtphub # Introduce the short server's name here +DESC="Osmocom GTP hub" # Introduce a short description here +DAEMON=/usr/bin/osmo-gtphub # Introduce the server's location here +SCRIPTNAME=/etc/init.d/osmocom-gtphub + +# Exit if the package is not installed +[ -x $DAEMON ] || exit 0 + +# Read configuration variable file if it is present +[ -r /etc/default/osmocom-gtphub ] && . /etc/default/osmocom-gtphub + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.0-6) to ensure that this file is present. +. /lib/lsb/init-functions + +DAEMON_ARGS="$DAEMON_ARGS -D -c $CONFIG_FILE" + +# +# Function that starts the daemon/service +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start --quiet --exec $DAEMON --test > /dev/null \ + || return 1 + start-stop-daemon --start --quiet --exec $DAEMON -- \ + $DAEMON_ARGS \ + || return 2 + # Add code here, if necessary, that waits for the process to be ready + # to handle requests from services started subsequently which depend + # on this one. As a last resort, sleep for some time. +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --name $NAME + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + # Wait for children to finish too if this is a daemon that forks + # and if the daemon is only ever run from this initscript. + # If the above conditions are not satisfied then add some other code + # that waits for the process to drop all resources that could be + # needed by services started subsequently. A last resort is to + # sleep for some time. + start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON + [ "$?" = 2 ] && return 2 + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + # + # If the daemon can reload its configuration without + # restarting (for example, when it is sent a SIGHUP), + # then implement that here. + # + start-stop-daemon --stop --signal 1 --quiet $PIDFILE --name $NAME + return 0 +} + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC " "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + status) + status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + #reload|force-reload) + # + # If do_reload() is not implemented then leave this commented out + # and leave 'force-reload' as an alias for 'restart'. + # + #log_daemon_msg "Reloading $DESC" "$NAME" + #do_reload + #log_end_msg $? + #;; + restart|force-reload) + # + # If the "reload" option is implemented then remove the + # 'force-reload' alias + # + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2 + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac + +: diff --git a/debian/osmocom-gtphub.install b/debian/osmocom-gtphub.install new file mode 100644 index 0000000..908c1a5 --- /dev/null +++ b/debian/osmocom-gtphub.install @@ -0,0 +1 @@ +/usr/bin/osmo-gtphub diff --git a/debian/rules b/debian/rules index 8047b79..62518d9 100755 --- a/debian/rules +++ b/debian/rules @@ -34,6 +34,7 @@ override_dh_strip: dh_strip -posmocom-sgsn --dbg-package=osmocom-sgsn-dbg dh_strip -posmocom-gbproxy --dbg-package=osmocom-gbproxy-dbg dh_strip -posmocom-bsc-nat --dbg-package=osmocom-bsc-nat-dbg + dh_strip -posmocom-gtphub --dbg-package=osmocom-gtphub-dbg override_dh_auto_configure: echo $(VERSION) > openbsc/.tarball-version diff --git a/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg b/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg new file mode 100644 index 0000000..c9bb4cf --- /dev/null +++ b/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg @@ -0,0 +1,23 @@ +! +! Osmocom gtphub configuration +! + +line vty + no login + +gtphub + ! Local addresses to listen on and send from, each on standard ports + ! 2123 and 2152. Setting these addresses is mandatory. + bind-to-sgsns 127.0.0.1 + bind-to-ggsns 127.0.0.2 + + ! Local nonstandard ports or separate IPs: + !bind-to-sgsns ctrl 127.0.0.1 2342 user 127.0.0.1 4223 + + ! Proxy: unconditionally direct all traffic to... + !ggsn-proxy 127.0.0.3 + !sgsn-proxy 127.0.0.4 + + ! Proxy with nonstandard ports or separate IPs: + !ggsn-proxy ctrl 127.0.0.3 2123 user 127.0.0.5 2152 + -- 2.1.4

2 7

[PATCH 1/3] mncc: Implement helper functions to convert MNCC cause to a string.
by Alexander Chemeris 13 Dec '15

13 Dec '15

--- openbsc/include/openbsc/mncc.h | 5 +- openbsc/src/libmsc/mncc.c | 103 ++++++++++++++++++++++++++++++++++++++--- 2 files changed, 100 insertions(+), 8 deletions(-) diff --git a/openbsc/include/openbsc/mncc.h b/openbsc/include/openbsc/mncc.h index 46ba237..92389c2 100644 --- a/openbsc/include/openbsc/mncc.h +++ b/openbsc/include/openbsc/mncc.h @@ -191,8 +191,11 @@ struct gsm_mncc_rtp { uint32_t payload_msg_type; }; -char *get_mncc_name(int value); +const char *get_mncc_name(int value); void mncc_set_cause(struct gsm_mncc *data, int loc, int val); +int mncc_has_cause(struct gsm_mncc *data); +const char *get_mncc_location(int value); +const char *get_mncc_cause(int value); void cc_tx_to_mncc(struct gsm_network *net, struct msgb *msg); /* input from CC code into mncc_builtin */ diff --git a/openbsc/src/libmsc/mncc.c b/openbsc/src/libmsc/mncc.c index 2767faa..e8bd9ba 100644 --- a/openbsc/src/libmsc/mncc.c +++ b/openbsc/src/libmsc/mncc.c @@ -34,10 +34,12 @@ #include <openbsc/transaction.h> #include <openbsc/rtp_proxy.h> -static struct mncc_names { +struct name_value { char *name; int value; -} mncc_names[] = { +}; + +static struct name_value mncc_names[] = { {"MNCC_SETUP_REQ", 0x0101}, {"MNCC_SETUP_IND", 0x0102}, {"MNCC_SETUP_RSP", 0x0103}, @@ -95,16 +97,103 @@ static struct mncc_names { {NULL, 0} }; -char *get_mncc_name(int value) +static struct name_value mncc_locations[] = { + {"GSM48_CAUSE_LOC_USER", 0x00}, + {"GSM48_CAUSE_LOC_PRN_S_LU", 0x01}, + {"GSM48_CAUSE_LOC_PUN_S_LU", 0x02}, + {"GSM48_CAUSE_LOC_TRANS_NET", 0x03}, + {"GSM48_CAUSE_LOC_PUN_S_RU", 0x04}, + {"GSM48_CAUSE_LOC_PRN_S_RU", 0x05}, + /* not defined */ + {"GSM48_CAUSE_LOC_INN_NET", 0x07}, + {"GSM48_CAUSE_LOC_NET_BEYOND", 0x0a}, + + {NULL, 0} }; + +static struct name_value mncc_causes[] = { + {"GSM48_CC_CAUSE_UNASSIGNED_NR", 1}, + {"GSM48_CC_CAUSE_NO_ROUTE", 3}, + {"GSM48_CC_CAUSE_CHAN_UNACCEPT", 6}, + {"GSM48_CC_CAUSE_OP_DET_BARRING", 8}, + {"GSM48_CC_CAUSE_NORM_CALL_CLEAR", 16}, + {"GSM48_CC_CAUSE_USER_BUSY", 17}, + {"GSM48_CC_CAUSE_USER_NOTRESPOND", 18}, + {"GSM48_CC_CAUSE_USER_ALERTING_NA", 19}, + {"GSM48_CC_CAUSE_CALL_REJECTED", 21}, + {"GSM48_CC_CAUSE_NUMBER_CHANGED", 22}, + {"GSM48_CC_CAUSE_PRE_EMPTION", 25}, + {"GSM48_CC_CAUSE_NONSE_USER_CLR", 26}, + {"GSM48_CC_CAUSE_DEST_OOO", 27}, + {"GSM48_CC_CAUSE_INV_NR_FORMAT", 28}, + {"GSM48_CC_CAUSE_FACILITY_REJ", 29}, + {"GSM48_CC_CAUSE_RESP_STATUS_INQ", 30}, + {"GSM48_CC_CAUSE_NORMAL_UNSPEC", 31}, + {"GSM48_CC_CAUSE_NO_CIRCUIT_CHAN", 34}, + {"GSM48_CC_CAUSE_NETWORK_OOO", 38}, + {"GSM48_CC_CAUSE_TEMP_FAILURE", 41}, + {"GSM48_CC_CAUSE_SWITCH_CONG", 42}, + {"GSM48_CC_CAUSE_ACC_INF_DISCARD", 43}, + {"GSM48_CC_CAUSE_REQ_CHAN_UNAVAIL", 44}, + {"GSM48_CC_CAUSE_RESOURCE_UNAVAIL", 47}, + {"GSM48_CC_CAUSE_QOS_UNAVAIL", 49}, + {"GSM48_CC_CAUSE_REQ_FAC_NOT_SUBSC", 50}, + {"GSM48_CC_CAUSE_INC_BARRED_CUG", 55}, + {"GSM48_CC_CAUSE_BEARER_CAP_UNAUTH", 57}, + {"GSM48_CC_CAUSE_BEARER_CA_UNAVAIL", 58}, + {"GSM48_CC_CAUSE_SERV_OPT_UNAVAIL", 63}, + {"GSM48_CC_CAUSE_BEARERSERV_UNIMPL", 65}, + {"GSM48_CC_CAUSE_ACM_GE_ACM_MAX", 68}, + {"GSM48_CC_CAUSE_REQ_FAC_NOTIMPL", 69}, + {"GSM48_CC_CAUSE_RESTR_BCAP_AVAIL", 70}, + {"GSM48_CC_CAUSE_SERV_OPT_UNIMPL", 79}, + {"GSM48_CC_CAUSE_INVAL_TRANS_ID", 81}, + {"GSM48_CC_CAUSE_USER_NOT_IN_CUG", 87}, + {"GSM48_CC_CAUSE_INCOMPAT_DEST", 88}, + {"GSM48_CC_CAUSE_INVAL_TRANS_NET", 91}, + {"GSM48_CC_CAUSE_SEMANTIC_INCORR", 95}, + {"GSM48_CC_CAUSE_INVAL_MAND_INF", 96}, + {"GSM48_CC_CAUSE_MSGTYPE_NOTEXIST", 97}, + {"GSM48_CC_CAUSE_MSGTYPE_INCOMPAT", 98}, + {"GSM48_CC_CAUSE_IE_NOTEXIST", 99}, + {"GSM48_CC_CAUSE_COND_IE_ERR", 100}, + {"GSM48_CC_CAUSE_MSG_INCOMP_STATE", 101}, + {"GSM48_CC_CAUSE_RECOVERY_TIMER", 102}, + {"GSM48_CC_CAUSE_PROTO_ERR", 111}, + {"GSM48_CC_CAUSE_INTERWORKING", 127}, + + {NULL, 0} }; + +const char *get_name_by_value(struct name_value *pairs, int value, const char *default_val) { int i; - for (i = 0; mncc_names[i].name; i++) { - if (mncc_names[i].value == value) - return mncc_names[i].name; + for (i = 0; pairs[i].name; i++) { + if (pairs[i].value == value) + return pairs[i].name; } - return "MNCC_Unknown"; + return default_val; +} + + +const char *get_mncc_name(int value) +{ + return get_name_by_value(mncc_names, value, "MNCC_Unknown"); +} + +const char *get_mncc_location(int value) +{ + return get_name_by_value(mncc_locations, value, "GSM48_CAUSE_LOC_Unknown"); +} + +const char *get_mncc_cause(int value) +{ + return get_name_by_value(mncc_causes, value, "GSM48_CC_CAUSE_Unknown"); +} + +int mncc_has_cause(struct gsm_mncc *data) +{ + return data->fields & MNCC_F_CAUSE; } void mncc_set_cause(struct gsm_mncc *data, int loc, int val) -- 1.9.1

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mncc-python tool for talking to MNCC interface
by Harald Welte 13 Dec '15

13 Dec '15

Hi all, I've been working on a small python tool that can be used to attach to the MNCC interface of OsmoNITB. It implements the 04.08 CC state machine with our MNCC primitives, including support for RTP bridge mode of the voice streams. The immediate first use case for this was to be able to automatically, reproducibly and quickly generate MT calls to a set of known MSISDNs and load all 14 TCH/H channels of a single-TRX BTS. It will connect the MT calls in pairs, so you end up with 7 MS-to-MS calls. Other use cases are expected to be added shortly. The first working version of the tool is available from http://git.osmocom.org/mncc-python/ or git clone git://git.osmocom.org/mncc-python The code is pretty hacky in some places. That's partially due to the fact that I'm much more familiar in the C, Perl and Erlang world than in python. Still I thought it's a good idea to do it in python to enable more people to use/edit/contribute to it. I'm happy for review / cleanup suggestion by people with more Python-foo than I have. Architecturally, I decided to do things a bit erlang-like, where we have finite state machines in an actor models, and message passing between the actors. This is what happens with the GsmCallFsm()'s, which are created by the GsmCallConnector() representing both legs of a call and the MnccActor() that wraps the MNCC socket towards OsmoNITB. The actual encoding/decodng of MNCC messages is auto-generated from the mncc header file #defines, enums and c-structures by means of ctypes code generation. mncc_test.py currently drops you into a python shell where you can e.g. start more / new calls by calling functions like connect_call("7839", "3802") from that shell. Exiting the shell by quit() or Ctrl+C will terminate all call FSMs and terminate. -- - 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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OpenBSC December 2015