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