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 53static const char * const ifstatstr[] = 54 { "IDLE", "DELAY", "PROBE", "DOWN", "TENTATIVE" }; 55 56void 57rtsold_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 133FILE * 134rtsold_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 155const char * 156sec2str(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