1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/*
* OsmoGGSN - Gateway GPRS Support Node
* Copyright (C) 2002, 2003, 2004 Mondru AB.
* Copyright (C) 2017-2019 by Harald Welte <laforge@gnumonks.org>
* Copyright (C) 2019 sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
*
* The contents of this file may be used under the terms of the GNU
* General Public License Version 2, provided that the above copyright
* notice and this permission notice is included in all copies or
* substantial portions of the software.
*
*/
#include "../config.h"
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <getopt.h>
#include <ctype.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <osmocom/core/application.h>
#include <osmocom/core/select.h>
#include <osmocom/core/stats.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/tdef.h>
#include <osmocom/core/utils.h>
#include <osmocom/ctrl/control_if.h>
#include <osmocom/ctrl/control_cmd.h>
#include <osmocom/ctrl/control_vty.h>
#include <osmocom/ctrl/ports.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include <osmocom/vty/stats.h>
#include <osmocom/vty/ports.h>
#include <osmocom/vty/command.h>
#include <osmocom/vty/misc.h>
#include <osmocom/vty/cpu_sched_vty.h>
#include "ggsn.h"
void *tall_ggsn_ctx;
static int end = 0;
static int daemonize = 0;
struct ctrl_handle *g_ctrlh;
struct ul255_t qos;
struct ul255_t apn;
static char *config_file = "osmo-ggsn.cfg";
struct osmo_tdef_group ggsn_tdef_group[] = {
{.name = "gtp", .tdefs = gtp_T_defs, .desc = "GTP (libgtp) timers" },
{ }
};
/* To exit gracefully. Used with GCC compilation flag -pg and gprof */
static void signal_handler(int s)
{
LOGP(DGGSN, LOGL_NOTICE, "signal %d received\n", s);
switch (s) {
case SIGINT:
case SIGTERM:
LOGP(DGGSN, LOGL_NOTICE, "SIGINT received, shutting down\n");
end = 1;
break;
case SIGABRT:
/* in case of abort, we want to obtain a talloc report and
* then run default SIGABRT handler, who will generate coredump
* and abort the process. abort() should do this for us after we
* return, but program wouldn't exit if an external SIGABRT is
* received.
*/
talloc_report(tall_vty_ctx, stderr);
talloc_report_full(tall_ggsn_ctx, stderr);
signal(SIGABRT, SIG_DFL);
raise(SIGABRT);
break;
case SIGUSR1:
talloc_report(tall_vty_ctx, stderr);
talloc_report_full(tall_ggsn_ctx, stderr);
break;
case SIGUSR2:
talloc_report_full(tall_vty_ctx, stderr);
break;
default:
break;
}
}
static void print_usage()
{
printf("Usage: osmo-ggsn [-h] [-D] [-c configfile] [-V]\n");
}
static void print_help()
{
printf( " Some useful help...\n"
" -h --help This help text\n"
" -D --daemonize Fork the process into a background daemon\n"
" -c --config-file filename The config file to use\n"
" -V --version Print the version of OsmoGGSN\n"
);
printf("\nVTY reference generation:\n");
printf(" --vty-ref-mode MODE VTY reference generation mode (e.g. 'expert').\n");
printf(" --vty-ref-xml Generate the VTY reference XML output and exit.\n");
}
static void handle_long_options(const char *prog_name, const int long_option)
{
static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT;
switch (long_option) {
case 1:
vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg);
if (vty_ref_mode < 0) {
fprintf(stderr, "%s: Unknown VTY reference generation "
"mode '%s'\n", prog_name, optarg);
exit(2);
}
break;
case 2:
fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n",
get_value_string(vty_ref_gen_mode_names, vty_ref_mode),
get_value_string(vty_ref_gen_mode_desc, vty_ref_mode));
vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode);
exit(0);
default:
fprintf(stderr, "%s: error parsing cmdline options\n", prog_name);
exit(2);
}
}
static void handle_options(int argc, char **argv)
{
while (1) {
int option_index = 0, c;
static int long_option = 0;
static struct option long_options[] = {
{ "help", 0, 0, 'h' },
{ "daemonize", 0, 0, 'D' },
{ "config-file", 1, 0, 'c' },
{ "version", 0, 0, 'V' },
{ "vty-ref-mode", 1, &long_option, 1 },
{ "vty-ref-xml", 0, &long_option, 2 },
{ 0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "hdc:V", long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 0:
handle_long_options(argv[0], long_option);
break;
case 'h':
print_usage();
print_help();
exit(0);
case 'D':
daemonize = 1;
break;
case 'c':
config_file = optarg;
break;
case 'V':
print_version(1);
exit(0);
break;
}
}
}
int main(int argc, char **argv)
{
struct ggsn_ctx *ggsn;
int rc;
tall_ggsn_ctx = talloc_named_const(NULL, 0, "OsmoGGSN");
msgb_talloc_ctx_init(tall_ggsn_ctx, 0);
g_vty_info.tall_ctx = tall_ggsn_ctx;
/* Handle keyboard interrupt SIGINT */
signal(SIGINT, &signal_handler);
signal(SIGTERM, &signal_handler);
signal(SIGABRT, &signal_handler);
signal(SIGUSR1, &signal_handler);
signal(SIGUSR2, &signal_handler);
osmo_init_ignore_signals();
osmo_init_logging2(tall_ggsn_ctx, &log_info);
osmo_stats_init(tall_ggsn_ctx);
vty_init(&g_vty_info);
logging_vty_add_cmds();
osmo_talloc_vty_add_cmds();
osmo_stats_vty_add_cmds();
ggsn_vty_init();
ctrl_vty_init(tall_ggsn_ctx);
osmo_cpu_sched_vty_init(tall_ggsn_ctx);
handle_options(argc, argv);
rate_ctr_init(tall_ggsn_ctx);
rc = vty_read_config_file(config_file, NULL);
if (rc < 0) {
fprintf(stderr, "Failed to open config file: '%s'\n", config_file);
exit(2);
}
rc = telnet_init_dynif(tall_ggsn_ctx, NULL, vty_get_bind_addr(), OSMO_VTY_PORT_GGSN);
if (rc < 0)
exit(1);
g_ctrlh = ctrl_interface_setup(NULL, OSMO_CTRL_PORT_GGSN, NULL);
if (!g_ctrlh) {
LOGP(DGGSN, LOGL_ERROR, "Failed to create CTRL interface.\n");
exit(1);
}
if (daemonize) {
rc = osmo_daemonize();
if (rc < 0) {
perror("Error during daemonize");
exit(1);
}
}
#if 0
/* qos */
qos.l = 3;
qos.v[2] = (args_info.qos_arg) & 0xff;
qos.v[1] = ((args_info.qos_arg) >> 8) & 0xff;
qos.v[0] = ((args_info.qos_arg) >> 16) & 0xff;
#endif
/* Main select loop */
while (!end) {
osmo_select_main(0);
}
llist_for_each_entry(ggsn, &g_ggsn_list, list)
ggsn_stop(ggsn);
return 0;
}
|
