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 * $FreeBSD$ 34 */ 35 36 #include <sys/types.h> 37 #include <sys/capsicum.h> 38 #include <sys/socket.h> 39 #include <sys/queue.h> 40 41 #include <net/if.h> 42 #include <netinet/in.h> 43 #include <netinet/icmp6.h> 44 #include <arpa/inet.h> 45 46 #include <capsicum_helpers.h> 47 #include <errno.h> 48 #include <stdio.h> 49 #include <string.h> 50 #include <syslog.h> 51 #include <time.h> 52 53 #include "rtsold.h" 54 55 static const char * const ifstatstr[] = 56 { "IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE" }; 57 58 void 59 rtsold_dump(FILE *fp) 60 { 61 struct ifinfo *ifi; 62 struct rainfo *rai; 63 struct ra_opt *rao; 64 struct timespec now; 65 char ntopbuf[INET6_ADDRSTRLEN]; 66 67 if (fseek(fp, 0, SEEK_SET) != 0) { 68 warnmsg(LOG_ERR, __func__, "fseek(): %s", strerror(errno)); 69 return; 70 } 71 (void)ftruncate(fileno(fp), 0); 72 73 (void)clock_gettime(CLOCK_MONOTONIC_FAST, &now); 74 75 TAILQ_FOREACH(ifi, &ifinfo_head, ifi_next) { 76 fprintf(fp, "Interface %s\n", ifi->ifname); 77 fprintf(fp, " probe interval: "); 78 if (ifi->probeinterval) { 79 fprintf(fp, "%d\n", ifi->probeinterval); 80 fprintf(fp, " probe timer: %d\n", ifi->probetimer); 81 } else { 82 fprintf(fp, "infinity\n"); 83 fprintf(fp, " no probe timer\n"); 84 } 85 fprintf(fp, " interface status: %s\n", 86 ifi->active > 0 ? "active" : "inactive"); 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 * 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 return (NULL); 150 } 151 return (fp); 152 } 153 154 const char * 155 sec2str(const struct timespec *total) 156 { 157 static char result[256]; 158 int days, hours, mins, secs; 159 int first = 1; 160 char *p = result; 161 char *ep = &result[sizeof(result)]; 162 int n; 163 struct timespec now; 164 time_t tsec; 165 166 clock_gettime(CLOCK_MONOTONIC_FAST, &now); 167 tsec = total->tv_sec; 168 tsec += total->tv_nsec / 1000 / 1000000; 169 tsec -= now.tv_sec; 170 tsec -= now.tv_nsec / 1000 / 1000000; 171 172 days = tsec / 3600 / 24; 173 hours = (tsec / 3600) % 24; 174 mins = (tsec / 60) % 60; 175 secs = tsec % 60; 176 177 if (days) { 178 first = 0; 179 n = snprintf(p, ep - p, "%dd", days); 180 if (n < 0 || n >= ep - p) 181 return "?"; 182 p += n; 183 } 184 if (!first || hours) { 185 first = 0; 186 n = snprintf(p, ep - p, "%dh", hours); 187 if (n < 0 || n >= ep - p) 188 return "?"; 189 p += n; 190 } 191 if (!first || mins) { 192 first = 0; 193 n = snprintf(p, ep - p, "%dm", mins); 194 if (n < 0 || n >= ep - p) 195 return "?"; 196 p += n; 197 } 198 snprintf(p, ep - p, "%ds", secs); 199 200 return (result); 201 } 202