xref: /freebsd/usr.sbin/rtsold/dump.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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 
38 #include <net/if.h>
39 #include <netinet/in.h>
40 #include <netinet/icmp6.h>
41 
42 #include <syslog.h>
43 #include <time.h>
44 #include <stdio.h>
45 #include <string.h>
46 #include <errno.h>
47 
48 #include "rtsold.h"
49 
50 static FILE *fp;
51 
52 extern struct ifinfo *iflist;
53 
54 static void dump_interface_status(void);
55 static char *sec2str(time_t);
56 char *ifstatstr[] = {"IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE"};
57 
58 static void
59 dump_interface_status(void)
60 {
61 	struct ifinfo *ifinfo;
62 	struct timeval now;
63 
64 	gettimeofday(&now, NULL);
65 
66 	for (ifinfo = iflist; ifinfo; ifinfo = ifinfo->next) {
67 		fprintf(fp, "Interface %s\n", ifinfo->ifname);
68 		fprintf(fp, "  probe interval: ");
69 		if (ifinfo->probeinterval) {
70 			fprintf(fp, "%d\n", ifinfo->probeinterval);
71 			fprintf(fp, "  probe timer: %d\n", ifinfo->probetimer);
72 		} else {
73 			fprintf(fp, "infinity\n");
74 			fprintf(fp, "  no probe timer\n");
75 		}
76 		fprintf(fp, "  interface status: %s\n",
77 		    ifinfo->active > 0 ? "active" : "inactive");
78 		fprintf(fp, "  other config: %s\n",
79 		    ifinfo->otherconfig ? "on" : "off");
80 		fprintf(fp, "  rtsold status: %s\n", ifstatstr[ifinfo->state]);
81 		fprintf(fp, "  carrier detection: %s\n",
82 		    ifinfo->mediareqok ? "available" : "unavailable");
83 		fprintf(fp, "  probes: %d, dadcount = %d\n",
84 		    ifinfo->probes, ifinfo->dadcount);
85 		if (ifinfo->timer.tv_sec == tm_max.tv_sec &&
86 		    ifinfo->timer.tv_usec == tm_max.tv_usec)
87 			fprintf(fp, "  no timer\n");
88 		else {
89 			fprintf(fp, "  timer: interval=%d:%d, expire=%s\n",
90 			    (int)ifinfo->timer.tv_sec,
91 			    (int)ifinfo->timer.tv_usec,
92 			    (ifinfo->expire.tv_sec < now.tv_sec) ? "expired"
93 			    : sec2str(ifinfo->expire.tv_sec - now.tv_sec));
94 		}
95 		fprintf(fp, "  number of valid RAs: %d\n", ifinfo->racnt);
96 	}
97 }
98 
99 void
100 rtsold_dump_file(char *dumpfile)
101 {
102 	if ((fp = fopen(dumpfile, "w")) == NULL) {
103 		warnmsg(LOG_WARNING, __func__, "open a dump file(%s): %s",
104 		    dumpfile, strerror(errno));
105 		return;
106 	}
107 	dump_interface_status();
108 	fclose(fp);
109 }
110 
111 static char *
112 sec2str(time_t total)
113 {
114 	static char result[256];
115 	int days, hours, mins, secs;
116 	int first = 1;
117 	char *p = result;
118 	char *ep = &result[sizeof(result)];
119 	int n;
120 
121 	days = total / 3600 / 24;
122 	hours = (total / 3600) % 24;
123 	mins = (total / 60) % 60;
124 	secs = total % 60;
125 
126 	if (days) {
127 		first = 0;
128 		n = snprintf(p, ep - p, "%dd", days);
129 		if (n < 0 || n >= ep - p)
130 			return "?";
131 		p += n;
132 	}
133 	if (!first || hours) {
134 		first = 0;
135 		n = snprintf(p, ep - p, "%dh", hours);
136 		if (n < 0 || n >= ep - p)
137 			return "?";
138 		p += n;
139 	}
140 	if (!first || mins) {
141 		first = 0;
142 		n = snprintf(p, ep - p, "%dm", mins);
143 		if (n < 0 || n >= ep - p)
144 			return "?";
145 		p += n;
146 	}
147 	snprintf(p, ep - p, "%ds", secs);
148 	return(result);
149 }
150