diff options
author | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2016-05-30 14:57:14 +0200 |
---|---|---|
committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2016-11-12 16:05:02 +0100 |
commit | 9a9bd05b65fa22fadc498568fe2ebdb41febbd43 (patch) | |
tree | edf47e86cf6bc1c4d6351f416a86f497ce938ce1 /openbsc | |
parent | 5c1f1bde495037d2305a6ec8474d1f8394f777b9 (diff) |
osmo-nitb becomes osmo-cscn
Change-Id: I3787050b524954d8a4dd13495c458f3ee293807b
Diffstat (limited to 'openbsc')
-rw-r--r-- | openbsc/.gitignore | 1 | ||||
-rw-r--r-- | openbsc/configure.ac | 4 | ||||
-rw-r--r-- | openbsc/doc/examples/osmo-cscn/osmo-cscn.cfg | 36 | ||||
-rw-r--r-- | openbsc/src/Makefile.am | 2 | ||||
-rw-r--r-- | openbsc/src/osmo-cscn/Makefile.am (renamed from openbsc/src/osmo-nitb/Makefile.am) | 25 | ||||
-rw-r--r-- | openbsc/src/osmo-cscn/cscn_main.c (renamed from openbsc/src/osmo-nitb/bsc_hack.c) | 283 | ||||
-rw-r--r-- | openbsc/src/osmo-cscn/iucs_ranap.c | 120 | ||||
-rw-r--r-- | openbsc/src/osmo-cscn/iucs_ranap.h | 6 |
8 files changed, 377 insertions, 100 deletions
diff --git a/openbsc/.gitignore b/openbsc/.gitignore index 3324069d6..5ed1f7805 100644 --- a/openbsc/.gitignore +++ b/openbsc/.gitignore @@ -55,6 +55,7 @@ src/gprs/osmo-sgsn src/gprs/osmo-gbproxy src/gprs/osmo-gtphub src/osmo-bsc_nat/osmo-bsc_nat +src/osmo-cscn/osmo-cscn #tests tests/testsuite.dir diff --git a/openbsc/configure.ac b/openbsc/configure.ac index 50d2888cb..f85d83487 100644 --- a/openbsc/configure.ac +++ b/openbsc/configure.ac @@ -57,7 +57,7 @@ fi AM_CONDITIONAL(BUILD_BSC, test "x$osmo_ac_build_bsc" = "xyes") AC_SUBST(osmo_ac_build_bsc) -# Enable/disable smpp support in the nitb? +# Enable/disable smpp support in the cscn? AC_ARG_ENABLE([smpp], [AS_HELP_STRING([--enable-smpp], [Build the SMPP interface])], [osmo_ac_build_smpp="$enableval"],[osmo_ac_build_smpp="no"]) if test "$osmo_ac_build_smpp" = "yes" ; then @@ -215,7 +215,7 @@ AC_OUTPUT( src/libfilter/Makefile src/libiu/Makefile src/libxsc/Makefile - src/osmo-nitb/Makefile + src/osmo-cscn/Makefile src/osmo-bsc/Makefile src/osmo-bsc_nat/Makefile src/osmo-bsc_mgcp/Makefile diff --git a/openbsc/doc/examples/osmo-cscn/osmo-cscn.cfg b/openbsc/doc/examples/osmo-cscn/osmo-cscn.cfg new file mode 100644 index 000000000..4ea893c27 --- /dev/null +++ b/openbsc/doc/examples/osmo-cscn/osmo-cscn.cfg @@ -0,0 +1,36 @@ +! +! OsmoCSCN configuration saved from vty +! +line vty + no login +! +network + network country code 1 + mobile network code 1 + short name OsmoCSCN + long name OsmoCSCN + auth policy closed + location updating reject cause 13 + encryption a5 0 + rrlp mode none + mm info 1 + handover 0 + handover window rxlev averaging 10 + handover window rxqual averaging 1 + handover window rxlev neighbor averaging 10 + handover power budget interval 6 + handover power budget hysteresis 3 + handover maximum distance 9999 + timer t3101 10 + timer t3103 0 + timer t3105 0 + timer t3107 0 + timer t3109 4 + timer t3111 0 + timer t3113 60 + timer t3115 0 + timer t3117 0 + timer t3119 0 + timer t3141 0 +cscn + subscriber-create-on-demand diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am index df95f94cc..859d490bb 100644 --- a/openbsc/src/Makefile.am +++ b/openbsc/src/Makefile.am @@ -39,7 +39,7 @@ endif # Programs SUBDIRS += \ - osmo-nitb \ + osmo-cscn \ osmo-bsc_mgcp \ utils \ ipaccess \ diff --git a/openbsc/src/osmo-nitb/Makefile.am b/openbsc/src/osmo-cscn/Makefile.am index 3b1b531ad..8245a64e9 100644 --- a/openbsc/src/osmo-nitb/Makefile.am +++ b/openbsc/src/osmo-cscn/Makefile.am @@ -13,6 +13,9 @@ AM_CFLAGS = \ $(LIBOSMOCTRL_CFLAGS) \ $(LIBOSMOABIS_CFLAGS) \ $(LIBSMPP34_CFLAGS) \ + $(LIBOSMORANAP_CFLAGS) \ + $(LIBASN1C_CFLAGS) \ + $(LIBOSMOSIGTRAN_CFLAGS) \ $(NULL) AM_LDFLAGS = \ @@ -20,19 +23,22 @@ AM_LDFLAGS = \ $(NULL) bin_PROGRAMS = \ - osmo-nitb \ + osmo-cscn \ $(NULL) -osmo_nitb_SOURCES = \ - bsc_hack.c \ - $(top_builddir)/tests/libiudummy/iudummy.c \ +noinst_HEADERS = \ + iucs_ranap.h \ $(NULL) -# libiudummy is temporary until iu_tx() and the ranap libs are linked -osmo_nitb_LDADD = \ - $(top_builddir)/src/libbsc/libbsc.a \ - $(top_builddir)/src/libxsc/libxsc.a \ +osmo_cscn_SOURCES = \ + cscn_main.c \ + iucs_ranap.c \ + $(NULL) + +osmo_cscn_LDADD = \ + $(top_builddir)/src/libiu/libiu.a \ $(top_builddir)/src/libmsc/libmsc.a \ + $(top_builddir)/src/libxsc/libxsc.a \ $(top_builddir)/src/libtrau/libtrau.a \ $(top_builddir)/src/libcommon/libcommon.a \ $(LIBCRYPT) \ @@ -44,4 +50,7 @@ osmo_nitb_LDADD = \ $(LIBSMPP34_LIBS) \ $(LIBCRYPTO_LIBS) \ -ldbi \ + $(LIBOSMORANAP_LIBS) \ + $(LIBASN1C_LIBS) \ + $(LIBOSMOSIGTRAN_LIBS) \ $(NULL) diff --git a/openbsc/src/osmo-nitb/bsc_hack.c b/openbsc/src/osmo-cscn/cscn_main.c index 992d4c855..27526e7d7 100644 --- a/openbsc/src/osmo-nitb/bsc_hack.c +++ b/openbsc/src/osmo-cscn/cscn_main.c @@ -1,6 +1,11 @@ -/* A hackish minimal BSC (+MSC +HLR) implementation */ +/* OsmoCSCN - Circuit-Switched Core Network (MSC+VLR+HLR+SMSC) implementation + */ -/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> +/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> + * All Rights Reserved + * + * Based on OsmoNITB: + * (C) 2008-2010 by Harald Welte <laforge@gnumonks.org> * (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org> * All Rights Reserved * @@ -29,6 +34,9 @@ #define _GNU_SOURCE #include <getopt.h> +/* build switches from the configure script */ +#include "../../bscconfig.h" + #include <openbsc/db.h> #include <osmocom/core/application.h> #include <osmocom/core/select.h> @@ -41,6 +49,9 @@ #include <openbsc/osmo_msc.h> #include <openbsc/osmo_msc_data.h> #include <openbsc/sms_queue.h> +#include <osmocom/vty/telnet_interface.h> +#include <osmocom/vty/ports.h> +#include <osmocom/vty/logging.h> #include <openbsc/vty.h> #include <openbsc/bss.h> #include <openbsc/mncc.h> @@ -48,23 +59,55 @@ #include <openbsc/handover_decision.h> #include <openbsc/rrlp.h> #include <osmocom/ctrl/control_if.h> -#include <osmocom/ctrl/ports.h> #include <osmocom/ctrl/control_vty.h> +#include <osmocom/ctrl/ports.h> #include <openbsc/ctrl.h> #include <openbsc/osmo_bsc_rf.h> #include <openbsc/smpp.h> - -#include "../../bscconfig.h" - -/* MCC and MNC for the Location Area Identifier */ -struct gsm_network *bsc_gsmnet = 0; -static const char *database_name = "hlr.sqlite3"; -static const char *config_file = "openbsc.cfg"; -static const char *rf_ctrl_path = NULL; -extern const char *openbsc_copyright; -static int daemonize = 0; -static const char *mncc_sock_path = NULL; -static int use_db_counter = 1; +#include <osmocom/sigtran/sccp_sap.h> +#include <osmocom/sigtran/sua.h> + +#include <openbsc/msc_ifaces.h> +#include <openbsc/iu.h> +#include <openbsc/iucs.h> + +#include "iucs_ranap.h" + +static const char * const osmocscn_copyright = + "OsmoCSCN - Osmocom Circuit-Switched Core Network implementation\r\n" + "Copyright (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>\r\n" + "Based on OsmoNITB:\r\n" + " (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>\r\n" + " (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>\r\n" + "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\r\n" + "Dieter Spaar, Andreas Eversberg, Sylvain Munaut, Neels Hofmeyr\r\n\r\n" + "License AGPLv3+: GNU AGPL version 3 or later <http://gnu.org/licenses/agpl-3.0.html>\r\n" + "This is free software: you are free to change and redistribute it.\r\n" + "There is NO WARRANTY, to the extent permitted by law.\r\n"; + +void *tall_cscn_ctx = NULL; + +/* satisfy deps from libbsc legacy. + TODO double check these */ +void *tall_fle_ctx = NULL; +void *tall_paging_ctx = NULL; +void *tall_map_ctx = NULL; +void *tall_upq_ctx = NULL; +/* end deps from libbsc legacy. */ + +static struct { + const char *database_name; + const char *config_file; + int daemonize; + const char *mncc_sock_path; + int use_db_counter; +} cscn_cmdline_config = { + "hlr.sqlite3", + "osmo-cscn.cfg", + 0, + 0, + 1 +}; /* timer to store statistics */ #define DB_SYNC_INTERVAL 60, 0 @@ -105,7 +148,7 @@ static void print_help() printf(" -P --rtp-proxy Enable the RTP Proxy code inside OpenBSC.\n"); printf(" -e --log-level number Set a global loglevel.\n"); printf(" -M --mncc-sock-path PATH Disable built-in MNCC handler and offer socket.\n"); - printf(" -m --mncc-sock Same as `-M /tmp/bsc_mncc' (deprecated).\n"); + printf(" -m --mncc-sock Same as `-M /tmp/bsc_mncc' (deprecated).\n"); printf(" -C --no-dbcounter Disable regular syncing of counters to database.\n"); printf(" -r --rf-ctl PATH A unix domain socket to listen for cmds.\n"); printf(" -p --pcap PATH Write abis communication to pcap trace file.\n"); @@ -131,11 +174,10 @@ static void handle_options(int argc, char **argv) {"mncc-sock", 0, 0, 'm'}, {"mncc-sock-path", 1, 0, 'M'}, {"no-dbcounter", 0, 0, 'C'}, - {"rf-ctl", 1, 0, 'r'}, {0, 0, 0, 0} }; - c = getopt_long(argc, argv, "hd:Dsl:ar:p:TPVc:e:mCr:M:", + c = getopt_long(argc, argv, "hd:Dsl:ap:TPVc:e:mCM:", long_options, &option_index); if (c == -1) break; @@ -152,13 +194,13 @@ static void handle_options(int argc, char **argv) log_parse_category_mask(osmo_stderr_target, optarg); break; case 'D': - daemonize = 1; + cscn_cmdline_config.daemonize = 1; break; case 'l': - database_name = optarg; + cscn_cmdline_config.database_name = optarg; break; case 'c': - config_file = optarg; + cscn_cmdline_config.config_file = optarg; break; case 'p': create_pcap_file(optarg); @@ -166,37 +208,59 @@ static void handle_options(int argc, char **argv) case 'T': log_set_print_timestamp(osmo_stderr_target, 1); break; +#if BEFORE_MSCSPLIT case 'P': ipacc_rtp_direct = 0; break; +#endif case 'e': log_set_log_level(osmo_stderr_target, atoi(optarg)); break; case 'M': - mncc_sock_path = optarg; + cscn_cmdline_config.mncc_sock_path = optarg; break; case 'm': - mncc_sock_path = "/tmp/bsc_mncc"; + cscn_cmdline_config.mncc_sock_path = "/tmp/bsc_mncc"; break; case 'C': - use_db_counter = 0; + cscn_cmdline_config.use_db_counter = 0; break; case 'V': print_version(1); exit(0); break; - case 'r': - rf_ctrl_path = optarg; - break; default: /* catch unknown options *as well as* missing arguments. */ fprintf(stderr, "Error in command line options. Exiting.\n"); exit(-1); - break; } } } +struct gsm_network *cscn_network_alloc(void *ctx, + mncc_recv_cb_t mncc_recv) +{ + struct gsm_network *net = gsm_network_init(ctx, 1, 1, mncc_recv); + if (!net) + return NULL; + + net->name_long = talloc_strdup(net, "OsmoCSCN"); + net->name_short = talloc_strdup(net, "OsmoCSCN"); + + return net; +} + +void cscn_network_shutdown(struct gsm_network *net) +{ + /* nothing here yet */ +} + +static struct gsm_network *cscn_network = NULL; + +/* TODO this is here to satisfy linking during intermediate development. Once + * libbsc is not linked to osmo-cscn, this should go away. */ +struct gsm_network *bsc_gsmnet = NULL; + extern void *tall_vty_ctx; static void signal_handler(int signal) { @@ -204,7 +268,7 @@ static void signal_handler(int signal) switch (signal) { case SIGINT: - bsc_shutdown_net(bsc_gsmnet); + cscn_network_shutdown(cscn_network); osmo_signal_dispatch(SS_L_GLOBAL, S_L_GLOBAL_SHUTDOWN, NULL); sleep(3); exit(0); @@ -215,7 +279,7 @@ static void signal_handler(int signal) * and then return to the caller, who will abort the process */ case SIGUSR1: talloc_report(tall_vty_ctx, stderr); - talloc_report_full(tall_bsc_ctx, stderr); + talloc_report_full(tall_cscn_ctx, stderr); break; case SIGUSR2: talloc_report_full(tall_vty_ctx, stderr); @@ -240,60 +304,90 @@ static void db_sync_timer_cb(void *data) static void subscr_expire_cb(void *data) { - subscr_expire(bsc_gsmnet->subscr_group); - osmo_timer_schedule(&bsc_gsmnet->subscr_expire_timer, EXPIRE_INTERVAL); + subscr_expire(cscn_network->subscr_group); + osmo_timer_schedule(&cscn_network->subscr_expire_timer, EXPIRE_INTERVAL); } extern int bsc_vty_go_parent(struct vty *vty); -static struct vty_app_info vty_info = { - .name = "OpenBSC", +static struct vty_app_info cscn_vty_info = { + .name = "OsmoCSCN", .version = PACKAGE_VERSION, .go_parent_cb = bsc_vty_go_parent, .is_config_node = bsc_vty_is_config_node, }; +static int rcvmsg_iu_cs(struct msgb *msg, struct gprs_ra_id *ra_id, /* FIXME gprs_ in CS code */ + uint16_t *sai) +{ + DEBUGP(DIUCS, "got IuCS message" + " %d bytes: %s\n", + msg->len, osmo_hexdump(msg->data, msg->len)); + if (ra_id) { + DEBUGP(DIUCS, "got IuCS message on" + " MNC %d MCC %d LAC %d RAC %d\n", + ra_id->mnc, ra_id->mcc, ra_id->lac, ra_id->rac); + } + + return gsm0408_rcvmsg_iucs(cscn_network, msg, ra_id? &ra_id->lac : NULL); +} + +static int rx_iu_event(struct ue_conn_ctx *ctx, enum iu_event_type type, + void *data) +{ + DEBUGP(DIUCS, "got IuCS event %u: %s\n", type, + iu_event_type_str(type)); + + return iucs_rx_ranap_event(cscn_network, ctx, type, data); +} + int main(int argc, char **argv) { int rc; - vty_info.copyright = openbsc_copyright; + cscn_vty_info.copyright = osmocscn_copyright; - tall_bsc_ctx = talloc_named_const(NULL, 1, "openbsc"); - talloc_ctx_init(tall_bsc_ctx); - on_dso_load_token(); - on_dso_load_rrlp(); - on_dso_load_ho_dec(); + tall_cscn_ctx = talloc_named_const(NULL, 1, "osmo_cscn"); + talloc_ctx_init(tall_cscn_ctx); - libosmo_abis_init(tall_bsc_ctx); osmo_init_logging(&log_info); - osmo_stats_init(tall_bsc_ctx); - bts_init(); + osmo_stats_init(tall_cscn_ctx); + + /* For --version, vty_init() must be called before handling options */ + vty_init(&cscn_vty_info); /* Parse options */ handle_options(argc, argv); /* Allocate global gsm_network struct; choose socket/internal MNCC */ - rc = bsc_network_alloc(mncc_sock_path? - mncc_sock_from_cc : int_mncc_recv); - if (rc) { - fprintf(stderr, "Allocation failed. Exiting.\n"); - exit(1); - } - - /* Initialize VTY */ - vty_init(&vty_info); - bsc_vty_init(&log_info, bsc_gsmnet); - ctrl_vty_init(tall_bsc_ctx); + cscn_network = cscn_network_alloc(tall_cscn_ctx, + cscn_cmdline_config.mncc_sock_path? + mncc_sock_from_cc + : int_mncc_recv); + if (!cscn_network) + return -ENOMEM; + + ctrl_vty_init(tall_cscn_ctx); + logging_vty_add_cmds(&log_info); + cscn_vty_init(cscn_network); + bsc_vty_init_extra(); #ifdef BUILD_SMPP - if (smpp_openbsc_alloc_init(tall_bsc_ctx) < 0) + if (smpp_openbsc_alloc_init(tall_cscn_ctx) < 0) return -1; #endif + rc = vty_read_config_file(cscn_cmdline_config.config_file, NULL); + if (rc < 0) { + LOGP(DNM, LOGL_FATAL, "Failed to parse the config file: '%s'\n", + cscn_cmdline_config.config_file); + return 1; + } + /* Initialize MNCC socket if appropriate */ - if (mncc_sock_path) { - rc = mncc_sock_init(bsc_gsmnet, mncc_sock_path); + if (cscn_cmdline_config.mncc_sock_path) { + rc = mncc_sock_init(cscn_network, + cscn_cmdline_config.mncc_sock_path); if (rc) { fprintf(stderr, "MNCC socket initialization failed. exiting.\n"); exit(1); @@ -301,17 +395,22 @@ int main(int argc, char **argv) } else DEBUGP(DMNCC, "Using internal MNCC handler.\n"); - /* Read the config */ - rc = bsc_network_configure(config_file); - if (rc < 0) { - fprintf(stderr, "Reading config failed. Exiting.\n"); - exit(1); - } + /* start telnet after reading config for vty_get_bind_addr() */ + rc = telnet_init_dynif(tall_cscn_ctx, &cscn_network, + vty_get_bind_addr(), OSMO_VTY_PORT_CSCN); + if (rc < 0) + return 2; + + /* BSC stuff is to be split behind an A-interface to be used with + * OsmoBSC, but there is no need to remove it yet. Most of the + * following code until iu_init() is legacy. */ #ifdef BUILD_SMPP - smpp_openbsc_start(bsc_gsmnet); + smpp_openbsc_start(cscn_network); #endif - bsc_api_init(bsc_gsmnet, msc_bsc_api()); + +#if 0 + the bsc_ctrl_node_lookup() only returns BSC specific ctrl nodes /* * For osmo-nitb, skip TCH/F for now, because otherwise dyn TS @@ -328,54 +427,54 @@ int main(int argc, char **argv) /* start control interface after reading config for * ctrl_vty_get_bind_addr() */ - bsc_gsmnet->ctrl = bsc_controlif_setup(bsc_gsmnet, - ctrl_vty_get_bind_addr(), - OSMO_CTRL_PORT_NITB_BSC); - if (!bsc_gsmnet->ctrl) { + cscn_network->ctrl = bsc_controlif_setup(cscn_network, + ctrl_vty_get_bind_addr(), + OSMO_CTRL_PORT_CSCN); + if (!cscn_network->ctrl) { printf("Failed to initialize control interface. Exiting.\n"); return -1; } +#endif +#if 0 +TODO: we probably want some of the _net_ ctrl commands from bsc_base_ctrl_cmds_install(). if (bsc_base_ctrl_cmds_install() != 0) { printf("Failed to initialize the BSC control commands.\n"); return -1; } +#endif +#if 0 if (msc_ctrl_cmds_install() != 0) { printf("Failed to initialize the MSC control commands.\n"); return -1; } +#endif /* seed the PRNG */ srand(time(NULL)); + /* TODO: is this used for crypto?? Improve randomness, at least we + * should try to use the nanoseconds part of the current time. */ - bsc_gsmnet->bsc_data->rf_ctrl = osmo_bsc_rf_create(rf_ctrl_path, bsc_gsmnet); - if (!bsc_gsmnet->bsc_data->rf_ctrl) { - fprintf(stderr, "Failed to create the RF service.\n"); - exit(1); + if (db_init(cscn_cmdline_config.database_name)) { + printf("DB: Failed to init database: %s\n", + cscn_cmdline_config.database_name); + return 4; } - if (db_init(database_name)) { - printf("DB: Failed to init database. Please check the option settings.\n"); - return -1; - } - printf("DB: Database initialized.\n"); - if (db_prepare()) { printf("DB: Failed to prepare database.\n"); - return -1; + return 5; } - printf("DB: Database prepared.\n"); - /* setup the timer */ db_sync_timer.cb = db_sync_timer_cb; db_sync_timer.data = NULL; - if (use_db_counter) + if (cscn_cmdline_config.use_db_counter) osmo_timer_schedule(&db_sync_timer, DB_SYNC_INTERVAL); - bsc_gsmnet->subscr_expire_timer.cb = subscr_expire_cb; - bsc_gsmnet->subscr_expire_timer.data = NULL; - osmo_timer_schedule(&bsc_gsmnet->subscr_expire_timer, EXPIRE_INTERVAL); + cscn_network->subscr_expire_timer.cb = subscr_expire_cb; + cscn_network->subscr_expire_timer.data = NULL; + osmo_timer_schedule(&cscn_network->subscr_expire_timer, EXPIRE_INTERVAL); signal(SIGINT, &signal_handler); signal(SIGABRT, &signal_handler); @@ -384,14 +483,20 @@ int main(int argc, char **argv) osmo_init_ignore_signals(); /* start the SMS queue */ - if (sms_queue_start(bsc_gsmnet, 20) != 0) + if (sms_queue_start(cscn_network, 20) != 0) return -1; - if (daemonize) { + /* Set up A-Interface */ + /* TODO: implement A-Interface and remove above legacy stuff. */ + + /* Set up IuCS */ + iu_init(tall_cscn_ctx, "127.0.0.1", 14001, rcvmsg_iu_cs, rx_iu_event); + + if (cscn_cmdline_config.daemonize) { rc = osmo_daemonize(); if (rc < 0) { perror("Error during daemonize"); - exit(1); + return 6; } } diff --git a/openbsc/src/osmo-cscn/iucs_ranap.c b/openbsc/src/osmo-cscn/iucs_ranap.c new file mode 100644 index 000000000..e76ef94cd --- /dev/null +++ b/openbsc/src/osmo-cscn/iucs_ranap.c @@ -0,0 +1,120 @@ +/* Implementation of RANAP messages to/from an MSC via an Iu-CS interface. + * This keeps direct RANAP dependencies out of libmsc. */ + +/* (C) 2016 by sysmocom s.m.f.c. GmbH <info@sysmocom.de> + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + + +#include <osmocom/core/logging.h> + +#include <osmocom/ranap/ranap_ies_defs.h> + +#include <openbsc/debug.h> +#include <openbsc/gsm_data.h> +#include <openbsc/gsm_subscriber.h> +#include <openbsc/iu.h> +#include <openbsc/iucs.h> + +#include "iucs_ranap.h" + +/* To continue authorization after a Security Mode Complete */ +int gsm0408_authorize(struct gsm_subscriber_connection *conn); + +static int iucs_rx_rab_assign(struct gsm_subscriber_connection *conn, + RANAP_RAB_SetupOrModifiedItemIEs_t *setup_ies) +{ + uint8_t rab_id; + RANAP_RAB_SetupOrModifiedItem_t *item = &setup_ies->raB_SetupOrModifiedItem; + + rab_id = item->rAB_ID.buf[0]; + + LOGP(DIUCS, LOGL_NOTICE, "Received RAB assignment event for %s" + " rab_id=%hhd\n", subscr_name(conn->subscr), rab_id); + /* TODO do stuff like in sgsn_ranap_rab_ass_resp() */ + + return 0; +} + +int iucs_rx_sec_mode_compl(struct gsm_subscriber_connection *conn, + RANAP_SecurityModeCompleteIEs_t *ies) +{ + gsm_cbfn *cb; + + OSMO_ASSERT(conn->via_iface == IFACE_IU); + + if (!conn->sec_operation) { + LOGP(DIUCS, LOGL_ERROR, + "Received Security Mode Complete message, but no" + " authentication/cipher operation in progress" + " for subscr %s\n", subscr_name(conn->subscr)); + return -EINVAL; + } + + /* TODO evalute ies */ + + if (conn->iu.integrity_protection) + LOGP(DIUCS, LOGL_NOTICE, "Integrity Protection" + " was already enabled for %s\n", + subscr_name(conn->subscr)); + + conn->iu.integrity_protection = INTEGRITY_PROTECTION_IK; + + cb = conn->sec_operation->cb; + if (cb) + cb(GSM_HOOK_RR_SECURITY, GSM_SECURITY_SUCCEEDED, NULL, + conn, conn->sec_operation->cb_data); + release_security_operation(conn); + return 0; +} + +int iucs_rx_ranap_event(struct gsm_network *network, + struct ue_conn_ctx *ue_ctx, int type, void *data) +{ + struct gsm_subscriber_connection *conn; + + conn = subscr_conn_lookup_iu(network, ue_ctx); + + if (!conn) { + LOGP(DRANAP, LOGL_ERROR, "Cannot find subscriber for IU event %u\n", type); + return -1; + } + + switch (type) { + case IU_EVENT_IU_RELEASE: + case IU_EVENT_LINK_INVALIDATED: + LOGP(DIUCS, LOGL_INFO, "IuCS release for %s\n", + subscr_name(conn->subscr)); + gsm0408_clear_request(conn, 0); + return 0; + + case IU_EVENT_SECURITY_MODE_COMPLETE: + LOGP(DIUCS, LOGL_INFO, "IuCS security mode complete for %s\n", + subscr_name(conn->subscr)); + return iucs_rx_sec_mode_compl(conn, + (RANAP_SecurityModeCompleteIEs_t*)data); + case IU_EVENT_RAB_ASSIGN: + return iucs_rx_rab_assign(conn, + (RANAP_RAB_SetupOrModifiedItemIEs_t*)data); + default: + LOGP(DIUCS, LOGL_NOTICE, "Unknown message received:" + " RANAP event: %i\n", type); + return -1; + } +} + diff --git a/openbsc/src/osmo-cscn/iucs_ranap.h b/openbsc/src/osmo-cscn/iucs_ranap.h new file mode 100644 index 000000000..0aa1ee95a --- /dev/null +++ b/openbsc/src/osmo-cscn/iucs_ranap.h @@ -0,0 +1,6 @@ +#pragma once + +struct ue_conn_ctx; + +int iucs_rx_ranap_event(struct gsm_network *network, + struct ue_conn_ctx *ue_ctx, int type, void *data); |