1 /* $KAME: dump.c,v 1.13 2003/10/05 00:09:36 itojun Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (C) 1999 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #include <sys/types.h>
35 #include <sys/capsicum.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 #include <arpa/inet.h>
43
44 #include <capsicum_helpers.h>
45 #include <errno.h>
46 #include <stdio.h>
47 #include <string.h>
48 #include <syslog.h>
49 #include <time.h>
50
51 #include "rtsold.h"
52
53 static const char * const ifstatstr[] =
54 { "IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE" };
55
56 void
rtsold_dump(FILE * fp)57 rtsold_dump(FILE *fp)
58 {
59 struct ifinfo *ifi;
60 struct rainfo *rai;
61 struct ra_opt *rao;
62 struct timespec now;
63 char ntopbuf[INET6_ADDRSTRLEN];
64
65 if (fseek(fp, 0, SEEK_SET) != 0) {
66 warnmsg(LOG_ERR, __func__, "fseek(): %s", strerror(errno));
67 return;
68 }
69 (void)ftruncate(fileno(fp), 0);
70
71 (void)clock_gettime(CLOCK_MONOTONIC_FAST, &now);
72
73 TAILQ_FOREACH(ifi, &ifinfo_head, ifi_next) {
74 fprintf(fp, "Interface %s\n", ifi->ifname);
75 fprintf(fp, " probe interval: ");
76 if (ifi->probeinterval) {
77 fprintf(fp, "%d\n", ifi->probeinterval);
78 fprintf(fp, " probe timer: %d\n", ifi->probetimer);
79 } else {
80 fprintf(fp, "infinity\n");
81 fprintf(fp, " no probe timer\n");
82 }
83 fprintf(fp, " interface status: %s\n",
84 ifi->active > 0 ? "active" : "inactive");
85 fprintf(fp, " managed config: %s\n",
86 ifi->managedconfig ? "on" : "off");
87 fprintf(fp, " other config: %s\n",
88 ifi->otherconfig ? "on" : "off");
89 fprintf(fp, " rtsold status: %s\n", ifstatstr[ifi->state]);
90 fprintf(fp, " carrier detection: %s\n",
91 ifi->mediareqok ? "available" : "unavailable");
92 fprintf(fp, " probes: %d, dadcount = %d\n",
93 ifi->probes, ifi->dadcount);
94 if (ifi->timer.tv_sec == tm_max.tv_sec &&
95 ifi->timer.tv_nsec == tm_max.tv_nsec)
96 fprintf(fp, " no timer\n");
97 else {
98 fprintf(fp, " timer: interval=%d:%d, expire=%s\n",
99 (int)ifi->timer.tv_sec,
100 (int)ifi->timer.tv_nsec / 1000,
101 (ifi->expire.tv_sec < now.tv_sec) ? "expired"
102 : sec2str(&ifi->expire));
103 }
104 fprintf(fp, " number of valid RAs: %d\n", ifi->racnt);
105
106 TAILQ_FOREACH(rai, &ifi->ifi_rainfo, rai_next) {
107 fprintf(fp, " RA from %s\n",
108 inet_ntop(AF_INET6, &rai->rai_saddr.sin6_addr,
109 ntopbuf, sizeof(ntopbuf)));
110 TAILQ_FOREACH(rao, &rai->rai_ra_opt, rao_next) {
111 fprintf(fp, " option: ");
112 switch (rao->rao_type) {
113 case ND_OPT_RDNSS:
114 fprintf(fp, "RDNSS: %s (expire: %s)\n",
115 (char *)rao->rao_msg,
116 sec2str(&rao->rao_expire));
117 break;
118 case ND_OPT_DNSSL:
119 fprintf(fp, "DNSSL: %s (expire: %s)\n",
120 (char *)rao->rao_msg,
121 sec2str(&rao->rao_expire));
122 break;
123 default:
124 break;
125 }
126 }
127 fprintf(fp, "\n");
128 }
129 }
130 fflush(fp);
131 }
132
133 FILE *
rtsold_init_dumpfile(const char * dumpfile)134 rtsold_init_dumpfile(const char *dumpfile)
135 {
136 cap_rights_t rights;
137 FILE *fp;
138
139 if ((fp = fopen(dumpfile, "w")) == NULL) {
140 warnmsg(LOG_WARNING, __func__, "opening a dump file(%s): %s",
141 dumpfile, strerror(errno));
142 return (NULL);
143 }
144
145 cap_rights_init(&rights, CAP_FSTAT, CAP_FTRUNCATE, CAP_SEEK, CAP_WRITE);
146 if (caph_rights_limit(fileno(fp), &rights) != 0) {
147 warnmsg(LOG_WARNING, __func__, "caph_rights_limit(%s): %s",
148 dumpfile, strerror(errno));
149 (void)fclose(fp);
150 return (NULL);
151 }
152 return (fp);
153 }
154
155 const char *
sec2str(const struct timespec * total)156 sec2str(const struct timespec *total)
157 {
158 static char result[256];
159 int days, hours, mins, secs;
160 int first = 1;
161 char *p = result;
162 char *ep = &result[sizeof(result)];
163 int n;
164 struct timespec now;
165 time_t tsec;
166
167 clock_gettime(CLOCK_MONOTONIC_FAST, &now);
168 tsec = total->tv_sec;
169 tsec += total->tv_nsec / 1000 / 1000000;
170 tsec -= now.tv_sec;
171 tsec -= now.tv_nsec / 1000 / 1000000;
172
173 days = tsec / 3600 / 24;
174 hours = (tsec / 3600) % 24;
175 mins = (tsec / 60) % 60;
176 secs = tsec % 60;
177
178 if (days) {
179 first = 0;
180 n = snprintf(p, ep - p, "%dd", days);
181 if (n < 0 || n >= ep - p)
182 return "?";
183 p += n;
184 }
185 if (!first || hours) {
186 first = 0;
187 n = snprintf(p, ep - p, "%dh", hours);
188 if (n < 0 || n >= ep - p)
189 return "?";
190 p += n;
191 }
192 if (!first || mins) {
193 first = 0;
194 n = snprintf(p, ep - p, "%dm", mins);
195 if (n < 0 || n >= ep - p)
196 return "?";
197 p += n;
198 }
199 snprintf(p, ep - p, "%ds", secs);
200
201 return (result);
202 }
203