xref: /freebsd/usr.sbin/rtsold/dump.c (revision db82af41db538fba5938d8585b2e2e2c206affb6)
1 /*	$KAME: dump.c,v 1.13 2003/10/05 00:09:36 itojun Exp $	*/
2 
3 /*
4  * Copyright (C) 1999 WIDE Project.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the project nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  * $FreeBSD$
32  */
33 
34 #include <sys/types.h>
35 #include <sys/time.h>
36 #include <sys/socket.h>
37 #include <sys/queue.h>
38 
39 #include <net/if.h>
40 #include <netinet/in.h>
41 #include <netinet/icmp6.h>
42 
43 #include <syslog.h>
44 #include <time.h>
45 #include <stdio.h>
46 #include <string.h>
47 #include <errno.h>
48 
49 #include "rtsold.h"
50 
51 static FILE *fp;
52 
53 extern struct ifinfo *iflist;
54 
55 static void dump_interface_status(void);
56 static const char *sec2str(time_t);
57 static const char * const ifstatstr[] = {"IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE"};
58 
59 static void
60 dump_interface_status(void)
61 {
62 	struct ifinfo *ifi;
63 	struct timeval now;
64 
65 	gettimeofday(&now, NULL);
66 
67 	TAILQ_FOREACH(ifi, &ifinfo_head, ifi_next) {
68 		fprintf(fp, "Interface %s\n", ifi->ifname);
69 		fprintf(fp, "  probe interval: ");
70 		if (ifi->probeinterval) {
71 			fprintf(fp, "%d\n", ifi->probeinterval);
72 			fprintf(fp, "  probe timer: %d\n", ifi->probetimer);
73 		} else {
74 			fprintf(fp, "infinity\n");
75 			fprintf(fp, "  no probe timer\n");
76 		}
77 		fprintf(fp, "  interface status: %s\n",
78 		    ifi->active > 0 ? "active" : "inactive");
79 		fprintf(fp, "  other config: %s\n",
80 		    ifi->otherconfig ? "on" : "off");
81 		fprintf(fp, "  rtsold status: %s\n", ifstatstr[ifi->state]);
82 		fprintf(fp, "  carrier detection: %s\n",
83 		    ifi->mediareqok ? "available" : "unavailable");
84 		fprintf(fp, "  probes: %d, dadcount = %d\n",
85 		    ifi->probes, ifi->dadcount);
86 		if (ifi->timer.tv_sec == tm_max.tv_sec &&
87 		    ifi->timer.tv_usec == tm_max.tv_usec)
88 			fprintf(fp, "  no timer\n");
89 		else {
90 			fprintf(fp, "  timer: interval=%d:%d, expire=%s\n",
91 			    (int)ifi->timer.tv_sec,
92 			    (int)ifi->timer.tv_usec,
93 			    (ifi->expire.tv_sec < now.tv_sec) ? "expired"
94 			    : sec2str(ifi->expire.tv_sec - now.tv_sec));
95 		}
96 		fprintf(fp, "  number of valid RAs: %d\n", ifi->racnt);
97 	}
98 }
99 
100 void
101 rtsold_dump_file(const char *dumpfile)
102 {
103 	if ((fp = fopen(dumpfile, "w")) == NULL) {
104 		warnmsg(LOG_WARNING, __func__, "open a dump file(%s): %s",
105 		    dumpfile, strerror(errno));
106 		return;
107 	}
108 	dump_interface_status();
109 	fclose(fp);
110 }
111 
112 static const char *
113 sec2str(time_t total)
114 {
115 	static char result[256];
116 	int days, hours, mins, secs;
117 	int first = 1;
118 	char *p = result;
119 	char *ep = &result[sizeof(result)];
120 	int n;
121 
122 	days = total / 3600 / 24;
123 	hours = (total / 3600) % 24;
124 	mins = (total / 60) % 60;
125 	secs = total % 60;
126 
127 	if (days) {
128 		first = 0;
129 		n = snprintf(p, ep - p, "%dd", days);
130 		if (n < 0 || n >= ep - p)
131 			return "?";
132 		p += n;
133 	}
134 	if (!first || hours) {
135 		first = 0;
136 		n = snprintf(p, ep - p, "%dh", hours);
137 		if (n < 0 || n >= ep - p)
138 			return "?";
139 		p += n;
140 	}
141 	if (!first || mins) {
142 		first = 0;
143 		n = snprintf(p, ep - p, "%dm", mins);
144 		if (n < 0 || n >= ep - p)
145 			return "?";
146 		p += n;
147 	}
148 	snprintf(p, ep - p, "%ds", secs);
149 
150 	return (result);
151 }
152