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Harald Welte288be162010-05-01 16:48:27 +02001/* GPRS SGSN Implementation */
2
3/* (C) 2010 by Harald Welte <laforge@gnumonks.org>
4 * (C) 2010 by On Waves
5 * All Rights Reserved
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 */
22
23#include <unistd.h>
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <getopt.h>
28#include <errno.h>
29#include <sys/fcntl.h>
30#include <sys/stat.h>
31#include <sys/types.h>
32#include <sys/socket.h>
33#include <netinet/in.h>
34#include <arpa/inet.h>
35
36#include <osmocore/talloc.h>
37#include <osmocore/select.h>
38
39#include <openbsc/signal.h>
40#include <openbsc/debug.h>
41#include <openbsc/telnet_interface.h>
42#include <openbsc/vty.h>
43#include <openbsc/sgsn.h>
44#include <openbsc/gprs_ns.h>
45#include <openbsc/gprs_bssgp.h>
46
47#include "../bscconfig.h"
48
49/* this is here for the vty... it will never be called */
50void subscr_put() { abort(); }
51
52#define _GNU_SOURCE
53#include <getopt.h>
54
55void *tall_bsc_ctx;
56
57struct gprs_ns_inst *sgsn_nsi;
58
59const char *openbsc_version = "Osmocom NSIP Proxy " PACKAGE_VERSION;
60const char *openbsc_copyright =
61 "Copyright (C) 2010 Harald Welte and On-Waves\n"
62 "Contributions by Daniel Willmann, Jan Lübbe, Stefan Schmidt\n"
63 "Dieter Spaar, Andreas Eversberg, Holger Freyther\n\n"
64 "License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>\n"
65 "This is free software: you are free to change and redistribute it.\n"
66 "There is NO WARRANTY, to the extent permitted by law.\n";
67
68static char *config_file = "osmo_sgsn.cfg";
69static struct sgsn_config sgcfg;
70
71/* call-back function for the NS protocol */
72static int sgsn_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc,
73 struct msgb *msg, u_int16_t bvci)
74{
75 int rc = 0;
76
77 switch (event) {
78 case GPRS_NS_EVT_UNIT_DATA:
79 /* hand the message into the BSSGP implementation */
Harald Weltee6afd602010-05-02 11:19:37 +020080 rc = gprs_bssgp_rcvmsg(msg);
Harald Welte288be162010-05-01 16:48:27 +020081 break;
82 default:
83 LOGP(DGPRS, LOGL_ERROR, "SGSN: Unknown event %u from NS\n", event);
84 if (msg)
85 talloc_free(msg);
86 rc = -EIO;
87 break;
88 }
89 return rc;
90}
91
92
93int main(int argc, char **argv)
94{
95 struct gsm_network dummy_network;
96 struct log_target *stderr_target;
97 struct sockaddr_in sin;
98 int rc;
99
100 tall_bsc_ctx = talloc_named_const(NULL, 0, "osmo_sgsn");
101
102 log_init(&log_info);
103 stderr_target = log_target_create_stderr();
104 log_add_target(stderr_target);
105 log_set_all_filter(stderr_target, 1);
106
107 telnet_init(&dummy_network, 4245);
108 rc = sgsn_parse_config(config_file, &sgcfg);
109 if (rc < 0) {
110 LOGP(DGPRS, LOGL_FATAL, "Cannot parse config file\n");
111 exit(2);
112 }
113
114 sgsn_nsi = gprs_ns_instantiate(&sgsn_ns_cb);
115 if (!sgsn_nsi) {
116 LOGP(DGPRS, LOGL_ERROR, "Unable to instantiate NS\n");
117 exit(1);
118 }
119 sgcfg.nsi = sgsn_nsi;
120 nsip_listen(sgsn_nsi, sgcfg.nsip_listen_port);
121
122 while (1) {
123 rc = bsc_select_main(0);
124 if (rc < 0)
125 exit(3);
126 }
127
128 exit(0);
129}
130
131struct gsm_network;
132int bsc_vty_init(struct gsm_network *dummy)
133{
134 cmd_init(1);
135 vty_init();
136
137 openbsc_vty_add_cmds();
138 sgsn_vty_init();
139 return 0;
140}
141