File: ax25ipd.c

package info (click to toggle)
ax25-apps 0.0.8-rc4-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid, stretch
  • size: 2,168 kB
  • sloc: sh: 11,124; ansic: 10,264; makefile: 287
file content (250 lines) | stat: -rw-r--r-- 5,635 bytes parent folder | download | duplicates (2)
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
/* ax25ipd.c     main entrypoint
 *
 * Copyright 1991, Michael Westerhof, Sun Microsystems, Inc.
 * This software may be freely used, distributed, or modified, providing
 * this header is not removed.
 *
 */

/*
 * cleaned up and prototyped for inclusion into the standard linux ax25
 * toolset in january 1997 by rob mayfield, vk5xxx/vk5zeu
 */

#include <stdio.h>
#include <signal.h>
#include <setjmp.h>
#include <syslog.h>

#include <netax25/daemon.h>
#include <config.h>
#include <getopt.h>

#include "../pathnames.h"
#include "ax25ipd.h"

jmp_buf restart_env;

/* Prototypes */
void hupper(int);

int opt_version = 0;
int opt_loglevel = 0;
int opt_nofork = 0;
int opt_help = 0;
char opt_configfile[PATH_MAX];
char opt_ttydevice[PATH_MAX];

struct option options[] = {
	{"version", 0, NULL, 'v'},
	{"loglevel", 1, NULL, 'l'},
	{"help", 0, NULL, 'h'},
	{"configfile", 1, NULL, 'c'},
	{"ttydevice", 1, NULL, 'd'},
        {"nofork", 0, NULL, 'f'},
	{0, 0, 0, 0}
};

int main(int argc, char **argv)
{
	if (setjmp(restart_env) == 0) {
		signal(SIGHUP, hupper);
	}

	*opt_configfile = 0;
	*opt_ttydevice = 0;

	/* set up the handler for statistics reporting */
	signal(SIGUSR1, usr1_handler);
	signal(SIGINT, int_handler);
	signal(SIGTERM, term_handler);

	while (1) {
		int c;

		c = getopt_long(argc, argv, "c:d:fhl:v", options, NULL);
		if (c == -1)
			break;

		switch (c) {
		case 'c':
			strncpy(opt_configfile, optarg, sizeof(opt_configfile)-1);
			opt_configfile[sizeof(opt_configfile)-1] = 0;
			break;
		case 'd':
			strncpy(opt_ttydevice, optarg, sizeof(opt_ttydevice)-1);
			opt_ttydevice[sizeof(opt_ttydevice)-1] = 0;
			break;
                case 'f':
                        opt_nofork = 1;
			break;
		case 'h':
			opt_help = 1;
			break;
		case 'v':
			opt_version = 1;
			break;
		case 'l':
			opt_loglevel = atoi(optarg);
			break;
		default:
			opt_help = 1;
			break;
		}
	}

	if (optind < argc) {
		printf("Unknown argument '%s' ...\n\n", argv[optind++]);
		opt_help = 1;
	}

	if (opt_version == 1) {
		greet_world();
		exit(0);
	}
	if (opt_help == 1) {
		greet_world();
		printf("Usage:\n");
		printf("%s [flags]\n", argv[0]);
		printf("\nFlags:\n");
		printf
		    ("  --version, -v                 Print version of program\n");
		printf("  --help, -h                    This help screen\n");
		printf
		    ("  --loglevel NUM, -l NUM        Set logging level to NUM\n");
		printf
		    ("  --configfile FILE, -c FILE    Set configuration file to FILE\n");
		printf
		    ("  --ttydevice TTYDEV, -d TTYDEV Set device parameter to TTYDEV\n");
                printf
                    ("  --nofork, -f                  Do not put daemon in background\n");
		exit(0);
	}

	/* Initialize all routines */
	config_init();
	kiss_init();
	route_init();
	process_init();
	io_init();

	/* read config file */
	config_read(opt_configfile);

	if (opt_ttydevice[0] != '\0') {
		strncpy(ttydevice, opt_ttydevice, sizeof(ttydevice)-1);
		ttydevice[sizeof(ttydevice)-1] = '\0';
	}

	/* print the current config and route info */
	dump_config();
	dump_routes();
	dump_params();

	/* Open the IO stuff */
	io_open();

	/* if we get this far without error, let's fork off ! :-) */
        if (opt_nofork == 0) {
	    if (!daemon_start(TRUE)) {
	    	    syslog(LOG_DAEMON | LOG_CRIT, "ax25ipd: cannot become a daemon\n");
		    return 1;
	    }
        }

	/* we need to close stdin, stdout, stderr: because otherwise
	 * scripting like ttyname=$(ax25ipd | tail -1) does not work
	 */
	if (!isatty(1)) {
		fflush(stdout);
		fflush(stderr);
		close(0);
		close(1);
		close(2);
	}

	/* and let the games begin */
	io_start();

	return (0);
}


void greet_world(void)
{
	printf("\nax25ipd %s / %s\n", VERS2, VERSION);
	printf
	    ("Copyright 1991, Michael Westerhof, Sun Microsystems, Inc.\n");
	printf
	    ("This software may be freely used, distributed, or modified, providing\nthis header is not removed\n\n");
	fflush(stdout);
}

void do_stats(void)
{
	int save_loglevel;

/* save the old loglevel, and force at least loglevel 1 */
	save_loglevel = loglevel;
	loglevel = 1;

	printf("\nSIGUSR1 signal: statistics and configuration report\n");

	greet_world();

	dump_config();
	dump_routes();
	dump_params();

	printf("\nInput stats:\n");
	printf("KISS input packets:  %d\n", stats.kiss_in);
	printf("           too big:  %d\n", stats.kiss_toobig);
	printf("          bad type:  %d\n", stats.kiss_badtype);
	printf("         too short:  %d\n", stats.kiss_tooshort);
	printf("        not for me:  %d\n", stats.kiss_not_for_me);
	printf("  I am destination:  %d\n", stats.kiss_i_am_dest);
	printf("    no route found:  %d\n", stats.kiss_no_ip_addr);
	printf("UDP  input packets:  %d\n", stats.udp_in);
	printf("IP   input packets:  %d\n", stats.ip_in);
	printf("   failed CRC test:  %d\n", stats.ip_failed_crc);
	printf("         too short:  %d\n", stats.ip_tooshort);
	printf("        not for me:  %d\n", stats.ip_not_for_me);
	printf("  I am destination:  %d\n", stats.ip_i_am_dest);
	printf("\nOutput stats:\n");
	printf("KISS output packets: %d\n", stats.kiss_out);
	printf("            beacons: %d\n", stats.kiss_beacon_outs);
	printf("UDP  output packets: %d\n", stats.udp_out);
	printf("IP   output packets: %d\n", stats.ip_out);
	printf("\n");

	fflush(stdout);

/* restore the old loglevel */
	loglevel = save_loglevel;
}

void hupper(int i)
{
	printf("\nSIGHUP!\n");
	longjmp(restart_env, 1);
}

void usr1_handler(int i)
{
	printf("\nSIGUSR1!\n");
	do_stats();
}

void int_handler(int i)
{
	printf("\nSIGINT!\n");
	do_stats();
	exit(1);
}

void term_handler(int i)
{
	printf("\nSIGTERM!\n");
	do_stats();
	exit(1);
}