| /* NS-over-IP proxy */ |
| |
| /* (C) 2010 by Harald Welte <laforge@gnumonks.org> |
| * (C) 2010 by On Waves |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <getopt.h> |
| #include <errno.h> |
| #include <sys/fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| |
| #include <osmocore/talloc.h> |
| #include <osmocore/select.h> |
| |
| #include <openbsc/signal.h> |
| #include <openbsc/debug.h> |
| #include <openbsc/gprs_ns.h> |
| #include <openbsc/gprs_bssgp.h> |
| #include <openbsc/telnet_interface.h> |
| #include <openbsc/vty.h> |
| #include <openbsc/gb_proxy.h> |
| |
| #include "../../bscconfig.h" |
| |
| /* this is here for the vty... it will never be called */ |
| void subscr_put() { abort(); } |
| |
| #define _GNU_SOURCE |
| #include <getopt.h> |
| |
| void *tall_bsc_ctx; |
| |
| const char *openbsc_version = "Osmocom NSIP Proxy " PACKAGE_VERSION; |
| const char *openbsc_copyright = |
| "Copyright (C) 2010 Harald Welte and On-Waves\n" |
| "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\n" |
| "Dieter Spaar, Andreas Eversberg, Holger Freyther\n\n" |
| "License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>\n" |
| "This is free software: you are free to change and redistribute it.\n" |
| "There is NO WARRANTY, to the extent permitted by law.\n"; |
| |
| static char *config_file = "osmo_gbproxy.cfg"; |
| struct gbproxy_config gbcfg; |
| |
| /* Pointer to the SGSN peer */ |
| extern struct gbprox_peer *gbprox_peer_sgsn; |
| |
| /* call-back function for the NS protocol */ |
| static int proxy_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, |
| struct msgb *msg, u_int16_t bvci) |
| { |
| int rc = 0; |
| |
| switch (event) { |
| case GPRS_NS_EVT_UNIT_DATA: |
| rc = gbprox_rcvmsg(msg, nsvc, bvci); |
| break; |
| default: |
| LOGP(DGPRS, LOGL_ERROR, "SGSN: Unknown event %u from NS\n", event); |
| if (msg) |
| talloc_free(msg); |
| rc = -EIO; |
| break; |
| } |
| return rc; |
| } |
| |
| |
| int main(int argc, char **argv) |
| { |
| struct gsm_network dummy_network; |
| struct log_target *stderr_target; |
| struct sockaddr_in sin; |
| int rc; |
| |
| tall_bsc_ctx = talloc_named_const(NULL, 0, "nsip_proxy"); |
| |
| log_init(&log_info); |
| stderr_target = log_target_create_stderr(); |
| log_add_target(stderr_target); |
| log_set_all_filter(stderr_target, 1); |
| |
| telnet_init(&dummy_network, 4244); |
| rc = gbproxy_parse_config(config_file, &gbcfg); |
| if (rc < 0) { |
| LOGP(DGPRS, LOGL_FATAL, "Cannot parse config file\n"); |
| exit(2); |
| } |
| |
| bssgp_nsi = gprs_ns_instantiate(&proxy_ns_cb); |
| if (!bssgp_nsi) { |
| LOGP(DGPRS, LOGL_ERROR, "Unable to instantiate NS\n"); |
| exit(1); |
| } |
| gbcfg.nsi = bssgp_nsi; |
| register_signal_handler(SS_NS, &gbprox_signal, NULL); |
| nsip_listen(bssgp_nsi, gbcfg.nsip_listen_port); |
| |
| /* 'establish' the outgoing connection to the SGSN */ |
| sin.sin_family = AF_INET; |
| sin.sin_port = htons(gbcfg.nsip_sgsn_port); |
| sin.sin_addr.s_addr = htonl(gbcfg.nsip_sgsn_ip); |
| nsip_connect(bssgp_nsi, &sin, gbcfg.nsip_sgsn_nsei, |
| gbcfg.nsip_sgsn_nsvci); |
| |
| while (1) { |
| rc = bsc_select_main(0); |
| if (rc < 0) |
| exit(3); |
| } |
| |
| exit(0); |
| } |
| |
| struct gsm_network; |
| int bsc_vty_init(struct gsm_network *dummy) |
| { |
| cmd_init(1); |
| vty_init(); |
| |
| openbsc_vty_add_cmds(); |
| gbproxy_vty_init(); |
| return 0; |
| } |
| |