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 const char *sec2str(time_t); 56 static const char * const 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(const 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 const 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