1313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 2313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Copyright (c) 1989 The Regents of the University of California. 3313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * All rights reserved. 4313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 5313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * This code is derived from software contributed to Berkeley by 6313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Mike Muuss. 7313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 8313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Redistribution and use in source and binary forms, with or without 9313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * modification, are permitted provided that the following conditions 10313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * are met: 11313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 1. Redistributions of source code must retain the above copyright 12313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * notice, this list of conditions and the following disclaimer. 13313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 2. Redistributions in binary form must reproduce the above copyright 14313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * notice, this list of conditions and the following disclaimer in the 15313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * documentation and/or other materials provided with the distribution. 16313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 3. All advertising materials mentioning features or use of this software 17313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * must display the following acknowledgement: 18313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * This product includes software developed by the University of 19313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * California, Berkeley and its contributors. 20313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 4. Neither the name of the University nor the names of its contributors 21313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * may be used to endorse or promote products derived from this software 22313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * without specific prior written permission. 23313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 24313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * SUCH DAMAGE. 35313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 36313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 37313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifndef lint 38313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittichar copyright[] = 39313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti"@(#) Copyright (c) 1989 The Regents of the University of California.\n\ 40313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti All rights reserved.\n"; 41313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif /* not lint */ 42313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 43313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 44313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * P I N G . C 45313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 46313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, 47313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * measure round-trip-delays and packet loss across network paths. 48313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 49313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Author - 50313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Mike Muuss 51313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * U. S. Army Ballistic Research Laboratory 52313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * December, 1983 53313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 54313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Status - 55313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Public Domain. Distribution Unlimited. 56313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Bugs - 57313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * More statistics could always be gathered. 58313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * This program has to run SUID to ROOT to access the ICMP socket. 59313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 60313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 61313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#include "ping_common.h" 62313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 63313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#include <netinet/ip.h> 64313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#include <netinet/ip_icmp.h> 65313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifndef WITHOUT_IFADDRS 66313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#include <ifaddrs.h> 67313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 68313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 69313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifndef ICMP_FILTER 70313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define ICMP_FILTER 1 71313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistruct icmp_filter { 72313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u32 data; 73313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti}; 74313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 75313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 76313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define MAXIPLEN 60 77313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define MAXICMPLEN 76 78313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define NROUTES 9 /* number of record route slots */ 79313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define TOS_MAX 255 /* 8-bit TOS field */ 80313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define MAX_HOSTNAMELEN NI_MAXHOST 81313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 82313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 83313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic int ts_type; 84313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic int nroute = 0; 85313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic __u32 route[10]; 86313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 87313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 88313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 89313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistruct sockaddr_in whereto; /* who to ping */ 90313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint optlen = 0; 91313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint settos = 0; /* Set TOS, Precendence or other QOS options */ 92313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint icmp_sock; /* socket file descriptor */ 93313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiu_char outpack[0x10000]; 94313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint maxpacket = sizeof(outpack); 95313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 96313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic int broadcast_pings = 0; 97313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 98313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic char *pr_addr(__u32); 99313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic void pr_options(unsigned char * cp, int hlen); 100313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic void pr_iph(struct iphdr *ip); 101313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic void usage(void) __attribute__((noreturn)); 102313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic u_short in_cksum(const u_short *addr, int len, u_short salt); 103313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic void pr_icmph(__u8 type, __u8 code, __u32 info, struct icmphdr *icp); 104313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic int parsetos(char *str); 105313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 106313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistatic struct { 107313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct cmsghdr cm; 108313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct in_pktinfo ipi; 109313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} cmsg = { {sizeof(struct cmsghdr) + sizeof(struct in_pktinfo), SOL_IP, IP_PKTINFO}, 110313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti {0, }}; 111313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint cmsg_len; 112313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 113313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittistruct sockaddr_in source; 114313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittichar *device; 115313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint pmtudisc = -1; 116313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 117eadaaeadfa3d5fcf49f433896e9244f0a10a5f63Lorenzo Colitti 118313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint 119313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittimain(int argc, char **argv) 120313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 121313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct hostent *hp; 122313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int ch, hold, packlen; 1237618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti int socket_errno = 0; 124313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti u_char *packet; 125313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char *target; 126313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef USE_IDN 127313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char *hnamebuf = NULL; 128313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#else 129313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char hnamebuf[MAX_HOSTNAMELEN]; 130313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 131313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char rspace[3 + 4 * NROUTES + 1]; /* record route space */ 132313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1335df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti#ifdef ANDROID 134924a10d5d9645d4e82fa4b9781f2d85b41ec74f1Lorenzo Colitti android_check_security(); 1355df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti#endif 1365df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti 137313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti limit_capabilities(); 138313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 139313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef USE_IDN 140313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti setlocale(LC_ALL, ""); 141313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 142313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1435df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti icmp_sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP); 1447618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti if (icmp_sock < 0) { 1457618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti enable_capability_raw(); 1465df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti icmp_sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); 1477618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti socket_errno = errno; 1487618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti disable_capability_raw(); 1497618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti using_ping_socket = 0; 1507618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti } 151313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 152313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti source.sin_family = AF_INET; 153313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 154313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti preload = 1; 155313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti while ((ch = getopt(argc, argv, COMMON_OPTSTR "bRT:")) != EOF) { 156313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch(ch) { 157313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'b': 158313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti broadcast_pings = 1; 159313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 160313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'Q': 161313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti settos = parsetos(optarg); 162313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (settos && 163313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (setsockopt(icmp_sock, IPPROTO_IP, IP_TOS, 164313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (char *)&settos, sizeof(int)) < 0)) { 165313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: error setting QOS sockopts"); 166313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 167313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 168313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 169313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'R': 170313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_TIMESTAMP) { 171313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "Only one of -T or -R may be used\n"); 172313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 173313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 174313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti options |= F_RROUTE; 175313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 176313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'T': 177313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_RROUTE) { 178313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "Only one of -T or -R may be used\n"); 179313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 180313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 181313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti options |= F_TIMESTAMP; 182313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (strcmp(optarg, "tsonly") == 0) 183313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ts_type = IPOPT_TS_TSONLY; 184313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else if (strcmp(optarg, "tsandaddr") == 0) 185313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ts_type = IPOPT_TS_TSANDADDR; 186313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else if (strcmp(optarg, "tsprespec") == 0) 187313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ts_type = IPOPT_TS_PRESPEC; 188313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else { 189313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "Invalid timestamp type\n"); 190313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 191313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 192313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 193313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'I': 194313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti { 195313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#if 0 196313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char dummy; 197313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int i1, i2, i3, i4; 198313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 199313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (sscanf(optarg, "%u.%u.%u.%u%c", 200313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &i1, &i2, &i3, &i4, &dummy) == 4) { 201313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u8 *ptr; 202313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ptr = (__u8*)&source.sin_addr; 203313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ptr[0] = i1; 204313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ptr[1] = i2; 205313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ptr[2] = i3; 206313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ptr[3] = i4; 207313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti options |= F_STRICTSOURCE; 208313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 209313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti device = optarg; 210313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 211313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#else 212313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (inet_pton(AF_INET, optarg, &source.sin_addr) > 0) 213313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti options |= F_STRICTSOURCE; 214313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 215313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti device = optarg; 216313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 217313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 218313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 219313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'M': 220313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (strcmp(optarg, "do") == 0) 221313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pmtudisc = IP_PMTUDISC_DO; 222313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else if (strcmp(optarg, "dont") == 0) 223313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pmtudisc = IP_PMTUDISC_DONT; 224313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else if (strcmp(optarg, "want") == 0) 225313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pmtudisc = IP_PMTUDISC_WANT; 226313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else { 227313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: wrong value for -M: do, dont, want are valid ones.\n"); 228313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 229313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 230313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 231313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case 'V': 232313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("ping utility, iputils-%s\n", SNAPSHOT); 233313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(0); 234313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti COMMON_OPTIONS 235313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti common_options(ch); 236313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 237313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 238313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti usage(); 239313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 240313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 241313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti argc -= optind; 242313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti argv += optind; 243313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 244313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (argc == 0) 245313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti usage(); 246313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (argc > 1) { 247313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_RROUTE) 248313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti usage(); 249313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else if (options & F_TIMESTAMP) { 250313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (ts_type != IPOPT_TS_PRESPEC) 251313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti usage(); 252313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (argc > 5) 253313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti usage(); 254313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 255313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (argc > 10) 256313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti usage(); 257313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti options |= F_SOURCEROUTE; 258313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 259313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 260313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti while (argc > 0) { 261313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti target = *argv; 262313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 263313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset((char *)&whereto, 0, sizeof(whereto)); 264313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti whereto.sin_family = AF_INET; 265313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (inet_aton(target, &whereto.sin_addr) == 1) { 266313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hostname = target; 267313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (argc == 1) 268313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti options |= F_NUMERIC; 269313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 270313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char *idn; 271313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef USE_IDN 272313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int rc; 273313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 274313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (hnamebuf) { 275313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti free(hnamebuf); 276313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hnamebuf = NULL; 277313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 278313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 279313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rc = idna_to_ascii_lz(target, &idn, 0); 280313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (rc != IDNA_SUCCESS) { 281313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: IDN encoding failed: %s\n", idna_strerror(rc)); 282313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 283313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 284313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#else 285313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti idn = target; 286313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 287313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hp = gethostbyname(idn); 288313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!hp) { 289313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: unknown host %s\n", target); 290313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 291313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 292313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef USE_IDN 293313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti free(idn); 294313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 295313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(&whereto.sin_addr, hp->h_addr, 4); 296313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef USE_IDN 297313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (idna_to_unicode_lzlz(hp->h_name, &hnamebuf, 0) != IDNA_SUCCESS) { 298313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hnamebuf = strdup(hp->h_name); 299313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!hnamebuf) { 300313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: strdup"); 301313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(-1); 302313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 303313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 304313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#else 305313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1); 306313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hnamebuf[sizeof(hnamebuf) - 1] = 0; 307313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 308313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hostname = hnamebuf; 309313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 310313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (argc > 1) 311313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti route[nroute++] = whereto.sin_addr.s_addr; 312313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti argc--; 313313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti argv++; 314313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 315313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 316313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (source.sin_addr.s_addr == 0) { 317313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti socklen_t alen; 318313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct sockaddr_in dst = whereto; 319313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int probe_fd = socket(AF_INET, SOCK_DGRAM, 0); 320313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 321313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (probe_fd < 0) { 322313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("socket"); 323313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 324313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 325313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (device) { 326313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct ifreq ifr; 327313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int rc; 328313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 329313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(&ifr, 0, sizeof(ifr)); 330313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti strncpy(ifr.ifr_name, device, IFNAMSIZ-1); 331313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 332313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti enable_capability_raw(); 333313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rc = setsockopt(probe_fd, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device)+1); 334313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti disable_capability_raw(); 335313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 336313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (rc == -1) { 337313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (IN_MULTICAST(ntohl(dst.sin_addr.s_addr))) { 338313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct ip_mreqn imr; 339313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (ioctl(probe_fd, SIOCGIFINDEX, &ifr) < 0) { 340313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: unknown iface %s\n", device); 341313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 342313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 343313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(&imr, 0, sizeof(imr)); 344313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti imr.imr_ifindex = ifr.ifr_ifindex; 345313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(probe_fd, SOL_IP, IP_MULTICAST_IF, &imr, sizeof(imr)) == -1) { 346313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: IP_MULTICAST_IF"); 347313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 348313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 349313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 350313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: SO_BINDTODEVICE"); 351313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 352313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 353313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 354313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 355313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 356313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (settos && 357313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti setsockopt(probe_fd, IPPROTO_IP, IP_TOS, (char *)&settos, sizeof(int)) < 0) 358313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("Warning: error setting QOS sockopts"); 359313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 360313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti dst.sin_port = htons(1025); 361313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (nroute) 362313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti dst.sin_addr.s_addr = route[0]; 3633d667ccb6c8aa805006cfbe2bc793a4ee1ae0047Lorenzo Colitti 3643d667ccb6c8aa805006cfbe2bc793a4ee1ae0047Lorenzo Colitti sock_setmark(probe_fd); 3653d667ccb6c8aa805006cfbe2bc793a4ee1ae0047Lorenzo Colitti 366313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (connect(probe_fd, (struct sockaddr*)&dst, sizeof(dst)) == -1) { 367313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (errno == EACCES) { 368313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (broadcast_pings == 0) { 369313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "Do you want to ping broadcast? Then -b\n"); 370313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 371313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 372313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "WARNING: pinging broadcast address\n"); 373313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(probe_fd, SOL_SOCKET, SO_BROADCAST, 374313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &broadcast_pings, sizeof(broadcast_pings)) < 0) { 375313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror ("can't set broadcasting"); 376313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 377313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 378313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (connect(probe_fd, (struct sockaddr*)&dst, sizeof(dst)) == -1) { 379313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("connect"); 380313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 381313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 382313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 383313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("connect"); 384313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 385313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 386313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 387313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti alen = sizeof(source); 388313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (getsockname(probe_fd, (struct sockaddr*)&source, &alen) == -1) { 389313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("getsockname"); 390313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 391313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 392313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti source.sin_port = 0; 393313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 394313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifndef WITHOUT_IFADDRS 395313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (device) { 396313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct ifaddrs *ifa0, *ifa; 397313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int ret; 398313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 399313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ret = getifaddrs(&ifa0); 400313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (ret) { 401313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "gatifaddrs() failed.\n"); 402313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 403313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 404313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (ifa = ifa0; ifa; ifa = ifa->ifa_next) { 405313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!ifa->ifa_addr || ifa->ifa_addr->sa_family != AF_INET) 406313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti continue; 407313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!strncmp(ifa->ifa_name, device, sizeof(device) - 1) && 408313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti !memcmp(&((struct sockaddr_in *)ifa->ifa_addr)->sin_addr, 409313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &source.sin_addr, sizeof(source.sin_addr))) 410313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 411313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 412313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti freeifaddrs(ifa0); 413313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!ifa) 414313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: Warning: source address might be selected on device other than %s.\n", device); 415313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 416313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 417313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti close(probe_fd); 418313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } while (0); 419313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 420313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (whereto.sin_addr.s_addr == 0) 421313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti whereto.sin_addr.s_addr = source.sin_addr.s_addr; 422313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 423313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icmp_sock < 0) { 424313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti errno = socket_errno; 425313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: icmp open socket"); 426313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 427313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 428313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 429313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (device) { 430313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct ifreq ifr; 431313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 432313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(&ifr, 0, sizeof(ifr)); 433313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti strncpy(ifr.ifr_name, device, IFNAMSIZ-1); 434313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (ioctl(icmp_sock, SIOCGIFINDEX, &ifr) < 0) { 435313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: unknown iface %s\n", device); 436313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 437313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 438313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cmsg.ipi.ipi_ifindex = ifr.ifr_ifindex; 439313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cmsg_len = sizeof(cmsg); 440313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 441313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 442313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (broadcast_pings || IN_MULTICAST(ntohl(whereto.sin_addr.s_addr))) { 443313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (uid) { 444313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (interval < 1000) { 445313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: broadcast ping with too short interval.\n"); 446313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 447313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 448313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (pmtudisc >= 0 && pmtudisc != IP_PMTUDISC_DO) { 449313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: broadcast ping does not fragment.\n"); 450313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 451313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 452313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 453313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (pmtudisc < 0) 454313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pmtudisc = IP_PMTUDISC_DO; 455313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 456313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 457313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (pmtudisc >= 0) { 458313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, SOL_IP, IP_MTU_DISCOVER, &pmtudisc, sizeof(pmtudisc)) == -1) { 459313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: IP_MTU_DISCOVER"); 460313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 461313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 462313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 463313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 4647618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti if ((options&F_STRICTSOURCE) && 4657618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti bind(icmp_sock, (struct sockaddr*)&source, sizeof(source)) == -1) { 4667618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti perror("bind"); 4677618e8104cac3bcc0ba509f4ba40644b665a3ac1Lorenzo Colitti exit(2); 468313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 469313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 4705df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (!using_ping_socket) { 471313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmp_filter filt; 472313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti filt.data = ~((1<<ICMP_SOURCE_QUENCH)| 473313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_DEST_UNREACH)| 474313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_TIME_EXCEEDED)| 475313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_PARAMETERPROB)| 476313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_REDIRECT)| 477313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_ECHOREPLY)); 478313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, SOL_RAW, ICMP_FILTER, (char*)&filt, sizeof(filt)) == -1) 479313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("WARNING: setsockopt(ICMP_FILTER)"); 480313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 481313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 482313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hold = 1; 483313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, SOL_IP, IP_RECVERR, (char *)&hold, sizeof(hold))) 484313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "WARNING: your kernel is veeery old. No problems.\n"); 4855df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (using_ping_socket) { 4865df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (setsockopt(icmp_sock, SOL_IP, IP_RECVTTL, (char *)&hold, sizeof(hold))) 4875df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti perror("WARNING: setsockopt(IP_RECVTTL)"); 4885df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (setsockopt(icmp_sock, SOL_IP, IP_RETOPTS, (char *)&hold, sizeof(hold))) 4895df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti perror("WARNING: setsockopt(IP_RETOPTS)"); 4905df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } 491313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 492313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* record route option */ 493313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_RROUTE) { 494313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(rspace, 0, sizeof(rspace)); 495313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[0] = IPOPT_NOP; 496313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1+IPOPT_OPTVAL] = IPOPT_RR; 497313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1+IPOPT_OLEN] = sizeof(rspace)-1; 498313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1+IPOPT_OFFSET] = IPOPT_MINOFF; 499313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optlen = 40; 500313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, sizeof(rspace)) < 0) { 501313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: record route"); 502313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 503313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 504313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 505313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_TIMESTAMP) { 506313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(rspace, 0, sizeof(rspace)); 507313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[0] = IPOPT_TIMESTAMP; 508313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1] = (ts_type==IPOPT_TS_TSONLY ? 40 : 36); 509313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[2] = 5; 510313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[3] = ts_type; 511313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (ts_type == IPOPT_TS_PRESPEC) { 512313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int i; 513313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1] = 4+nroute*8; 514313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (i=0; i<nroute; i++) 515313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti *(__u32*)&rspace[4+i*8] = route[i]; 516313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 517313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, rspace[1]) < 0) { 518313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[3] = 2; 519313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, rspace[1]) < 0) { 520313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: ts option"); 521313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 522313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 523313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 524313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optlen = 40; 525313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 526313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_SOURCEROUTE) { 527313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int i; 528313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(rspace, 0, sizeof(rspace)); 529313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[0] = IPOPT_NOOP; 530313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1+IPOPT_OPTVAL] = (options & F_SO_DONTROUTE) ? IPOPT_SSRR 531313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti : IPOPT_LSRR; 532313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1+IPOPT_OLEN] = 3 + nroute*4; 533313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rspace[1+IPOPT_OFFSET] = IPOPT_MINOFF; 534313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (i=0; i<nroute; i++) 535313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti *(__u32*)&rspace[4+i*4] = route[i]; 536313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 537313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, 4 + nroute*4) < 0) { 538313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("ping: record route"); 539313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 540313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 541313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optlen = 40; 542313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 543313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 544313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Estimate memory eaten by single packet. It is rough estimate. 545313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Actually, for small datalen's it depends on kernel side a lot. */ 546313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hold = datalen + 8; 547313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hold += ((hold+511)/512)*(optlen + 20 + 16 + 64 + 160); 548313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sock_setbufs(icmp_sock, hold); 549313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 550313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (broadcast_pings) { 551313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, SOL_SOCKET, SO_BROADCAST, 552313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &broadcast_pings, sizeof(broadcast_pings)) < 0) { 553313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror ("ping: can't set broadcasting"); 554313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 555313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 556313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 557313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 558313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_NOLOOP) { 559313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int loop = 0; 560313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_MULTICAST_LOOP, 561313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &loop, 1) == -1) { 562313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror ("ping: can't disable multicast loopback"); 563313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 564313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 565313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 566313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_TTL) { 567313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int ittl = ttl; 568313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_MULTICAST_TTL, 569313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &ttl, 1) == -1) { 570313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror ("ping: can't set multicast time-to-live"); 571313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 572313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 573313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, IPPROTO_IP, IP_TTL, 574313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &ittl, sizeof(ittl)) == -1) { 575313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror ("ping: can't set unicast time-to-live"); 576313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 577313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 578313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 579313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 580313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (datalen > 0xFFFF - 8 - optlen - 20) { 581313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (uid || datalen > sizeof(outpack)-8) { 582313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "Error: packet size %d is too large. Maximum is %d\n", datalen, 0xFFFF-8-20-optlen); 583313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 584313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 585313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Allow small oversize to root yet. It will cause EMSGSIZE. */ 586313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "WARNING: packet size %d is too large. Maximum is %d\n", datalen, 0xFFFF-8-20-optlen); 587313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 588313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 589313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (datalen >= sizeof(struct timeval)) /* can we time transfer */ 590313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti timing = 1; 591313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti packlen = datalen + MAXIPLEN + MAXICMPLEN; 592313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!(packet = (u_char *)malloc((u_int)packlen))) { 593313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: out of memory.\n"); 594313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 595313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 596313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 597313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("PING %s (%s) ", hostname, inet_ntoa(whereto.sin_addr)); 598313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (device || (options&F_STRICTSOURCE)) 599313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("from %s %s: ", inet_ntoa(source.sin_addr), device ?: ""); 600313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("%d(%d) bytes of data.\n", datalen, datalen+8+optlen+20); 601313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 602313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti setup(icmp_sock); 603313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 604313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti main_loop(icmp_sock, packet, packlen); 605313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 606313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 607313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 608313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint receive_error_msg() 609313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 610313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int res; 611313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char cbuf[512]; 612313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct iovec iov; 613313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct msghdr msg; 614313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct cmsghdr *cmsg; 615313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct sock_extended_err *e; 616313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmphdr icmph; 617313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct sockaddr_in target; 618313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int net_errors = 0; 619313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int local_errors = 0; 620313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int saved_errno = errno; 621313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 622313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti iov.iov_base = &icmph; 623313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti iov.iov_len = sizeof(icmph); 624313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_name = (void*)⌖ 625313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_namelen = sizeof(target); 626313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_iov = &iov; 627313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_iovlen = 1; 628313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_flags = 0; 629313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_control = cbuf; 630313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti msg.msg_controllen = sizeof(cbuf); 631313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 632313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti res = recvmsg(icmp_sock, &msg, MSG_ERRQUEUE|MSG_DONTWAIT); 633313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (res < 0) 634313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti goto out; 635313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 636313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti e = NULL; 637313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { 638313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (cmsg->cmsg_level == SOL_IP) { 639313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (cmsg->cmsg_type == IP_RECVERR) 640313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti e = (struct sock_extended_err *)CMSG_DATA(cmsg); 641313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 642313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 643313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (e == NULL) 644313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti abort(); 645313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 646313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (e->ee_origin == SO_EE_ORIGIN_LOCAL) { 647313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti local_errors++; 648313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_QUIET) 649313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti goto out; 650313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_FLOOD) 651313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti write_stdout("E", 1); 652313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else if (e->ee_errno != EMSGSIZE) 653313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: local error: %s\n", strerror(e->ee_errno)); 654313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 655313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: local error: Message too long, mtu=%u\n", e->ee_info); 656313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti nerrors++; 657313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else if (e->ee_origin == SO_EE_ORIGIN_ICMP) { 658313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct sockaddr_in *sin = (struct sockaddr_in*)(e+1); 6595df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti int error_pkt; 660313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 661313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (res < sizeof(icmph) || 662313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti target.sin_addr.s_addr != whereto.sin_addr.s_addr || 663313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icmph.type != ICMP_ECHO || 664ce2d2d04ca21aedab67bd41dd9f89063454ed463Lorenzo Colitti !is_ours(icmph.un.echo.id)) { 665313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Not our error, not an error at all. Clear. */ 666313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti saved_errno = 0; 667313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti goto out; 668313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 669313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 6705df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti error_pkt = (e->ee_type != ICMP_REDIRECT && 6715df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti e->ee_type != ICMP_SOURCE_QUENCH); 6725df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (error_pkt) { 6735df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti acknowledge(ntohs(icmph.un.echo.sequence)); 6745df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti net_errors++; 6755df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti nerrors++; 6765df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } 6775df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti else { 6785df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti saved_errno = 0; 6795df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } 680313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 6815df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (!using_ping_socket && !working_recverr) { 682313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmp_filter filt; 683313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti working_recverr = 1; 684313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* OK, it works. Add stronger filter. */ 685313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti filt.data = ~((1<<ICMP_SOURCE_QUENCH)| 686313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_REDIRECT)| 687313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (1<<ICMP_ECHOREPLY)); 688313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, SOL_RAW, ICMP_FILTER, (char*)&filt, sizeof(filt)) == -1) 689313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("\rWARNING: setsockopt(ICMP_FILTER)"); 690313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 691313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 692313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_QUIET) 693313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti goto out; 694313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_FLOOD) { 6955df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (error_pkt) 6965df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti write_stdout("\bE", 2); 697313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 698313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti print_timestamp(); 6995df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti printf("From %s: icmp_seq=%u ", pr_addr(sin->sin_addr.s_addr), ntohs(icmph.un.echo.sequence)); 700313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_icmph(e->ee_type, e->ee_code, e->ee_info, NULL); 701313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fflush(stdout); 702313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 703313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 704313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 705313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiout: 706313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti errno = saved_errno; 707313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return net_errors ? : -local_errors; 708313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 709313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 710313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 711313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * pinger -- 712313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Compose and transmit an ICMP ECHO REQUEST packet. The IP packet 713313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * will be added on by the kernel. The ID field is our UNIX process ID, 714313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * and the sequence number is an ascending integer. The first 8 bytes 715313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * of the data portion are used to hold a UNIX "timeval" struct in VAX 716313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * byte-order, to compute the round-trip time. 717313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 718313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint send_probe() 719313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 720313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmphdr *icp; 721313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int cc; 722313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int i; 723313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 724313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp = (struct icmphdr *)outpack; 725313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->type = ICMP_ECHO; 726313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->code = 0; 727313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->checksum = 0; 728313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->un.echo.sequence = htons(ntransmitted+1); 729313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->un.echo.id = ident; /* ID */ 730313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 731313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti rcvd_clear(ntransmitted+1); 732313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 733313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (timing) { 734313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options&F_LATENCY) { 735313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct timeval tmp_tv; 736313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti gettimeofday(&tmp_tv, NULL); 737313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(icp+1, &tmp_tv, sizeof(tmp_tv)); 738313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 739313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memset(icp+1, 0, sizeof(struct timeval)); 740313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 741313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 742313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 743313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cc = datalen + 8; /* skips ICMP portion */ 744313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 745313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* compute ICMP checksum here */ 746313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->checksum = in_cksum((u_short *)icp, cc, 0); 747313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 748313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (timing && !(options&F_LATENCY)) { 749313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct timeval tmp_tv; 750313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti gettimeofday(&tmp_tv, NULL); 751313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(icp+1, &tmp_tv, sizeof(tmp_tv)); 752313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->checksum = in_cksum((u_short *)&tmp_tv, sizeof(tmp_tv), ~icp->checksum); 753313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 754313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 755313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti do { 756313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static struct iovec iov = {outpack, 0}; 757313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static struct msghdr m = { &whereto, sizeof(whereto), 758313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti &iov, 1, &cmsg, 0, 0 }; 759313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti m.msg_controllen = cmsg_len; 760313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti iov.iov_len = cc; 761313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 762313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = sendmsg(icmp_sock, &m, confirm); 763313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti confirm = 0; 764313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } while (0); 765313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 766313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return (cc == i ? 0 : i); 767313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 768313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 769313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 770313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * parse_reply -- 771313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Print out the packet, if it came from us. This logic is necessary 772313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * because ALL readers of the ICMP socket get a copy of ALL ICMP packets 773313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * which arrive ('tis only fair). This permits multiple copies of this 774313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * program to be run without having intermingled output (or statistics!). 775313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 776313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittivoid pr_echo_reply(__u8 *_icp, int len) 777313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 778313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmphdr *icp = (struct icmphdr *)_icp; 779313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf(" icmp_seq=%u", ntohs(icp->un.echo.sequence)); 780313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 781313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 782313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint 783313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiparse_reply(struct msghdr *msg, int cc, void *addr, struct timeval *tv) 784313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 785313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct sockaddr_in *from = addr; 786313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u8 *buf = msg->msg_iov->iov_base; 787313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmphdr *icp; 788313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct iphdr *ip; 789313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int hlen; 790313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int csfailed; 7915df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti struct cmsghdr *cmsg; 7925df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti int ttl; 7935df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti __u8 *opts; 7945df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti int optlen; 795313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 796313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Check the IP header */ 797313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ip = (struct iphdr *)buf; 7985df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (!using_ping_socket) { 7995df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti hlen = ip->ihl*4; 8005df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (cc < hlen + 8 || ip->ihl < 5) { 8015df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (options & F_VERBOSE) 8025df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti fprintf(stderr, "ping: packet too short (%d bytes) from %s\n", cc, 8035df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti pr_addr(from->sin_addr.s_addr)); 8045df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti return 1; 8055df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } 8065df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti ttl = ip->ttl; 8075df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti opts = buf + sizeof(struct iphdr); 8085df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti optlen = hlen - sizeof(struct iphdr); 8095df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } else { 8105df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti hlen = 0; 8115df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti ttl = 0; 8125df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti opts = buf; 8135df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti optlen = 0; 8145df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { 8155df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (cmsg->cmsg_level != SOL_IP) 8165df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti continue; 8175df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (cmsg->cmsg_type == IP_TTL) { 8185df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (cmsg->cmsg_len < sizeof(int)) 8195df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti continue; 8205df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti ttl = *(int *) CMSG_DATA(cmsg); 8215df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } else if (cmsg->cmsg_type == IP_RETOPTS) { 8225df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti opts = (__u8 *) CMSG_DATA(cmsg); 8235df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti optlen = cmsg->cmsg_len; 8245df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } 8255df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti } 826313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 827313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 828313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Now the ICMP part */ 829313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cc -= hlen; 830313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp = (struct icmphdr *)(buf + hlen); 831313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti csfailed = in_cksum((u_short *)icp, cc, 0); 832313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 833313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp->type == ICMP_ECHOREPLY) { 834ce2d2d04ca21aedab67bd41dd9f89063454ed463Lorenzo Colitti if (!is_ours(icp->un.echo.id)) 835313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 1; /* 'Twas not our ECHO */ 836313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (gather_statistics((__u8*)icp, sizeof(*icp), cc, 837313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ntohs(icp->un.echo.sequence), 8385df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti ttl, 0, tv, pr_addr(from->sin_addr.s_addr), 839313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_echo_reply)) 840313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 841313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 842313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* We fall here when a redirect or source quench arrived. 843313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Also this branch processes icmp errors, when IP_RECVERR 844313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * is broken. */ 845313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 846313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch (icp->type) { 847313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_ECHO: 848313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* MUST NOT */ 849313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 1; 850313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_SOURCE_QUENCH: 851313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_REDIRECT: 852313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_DEST_UNREACH: 853313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_TIME_EXCEEDED: 854313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PARAMETERPROB: 855313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti { 856313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct iphdr * iph = (struct iphdr *)(&icp[1]); 857313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct icmphdr *icp1 = (struct icmphdr*)((unsigned char *)iph + iph->ihl*4); 858313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int error_pkt; 859313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (cc < 8+sizeof(struct iphdr)+8 || 860313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cc < 8+iph->ihl*4+8) 861313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 1; 862313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp1->type != ICMP_ECHO || 863313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti iph->daddr != whereto.sin_addr.s_addr || 864ce2d2d04ca21aedab67bd41dd9f89063454ed463Lorenzo Colitti !is_ours(icp1->un.echo.id)) 865313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 1; 866313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti error_pkt = (icp->type != ICMP_REDIRECT && 867313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti icp->type != ICMP_SOURCE_QUENCH); 868313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (error_pkt) { 869313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti acknowledge(ntohs(icp1->un.echo.sequence)); 870313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (working_recverr) { 871313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 872313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 873313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static int once; 874313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Sigh, IP_RECVERR for raw socket 875313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * was broken until 2.4.9. So, we ignore 876313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * the first error and warn on the second. 877313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 878313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (once++ == 1) 879313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "\rWARNING: kernel is not very fresh, upgrade is recommended.\n"); 880313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (once == 1) 881313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 882313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 883313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 884313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti nerrors+=error_pkt; 885313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options&F_QUIET) 886313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return !error_pkt; 887313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_FLOOD) { 888313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (error_pkt) 889313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti write_stdout("\bE", 2); 890313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return !error_pkt; 891313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 892313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti print_timestamp(); 893313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("From %s: icmp_seq=%u ", 894313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_addr(from->sin_addr.s_addr), 895313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ntohs(icp1->un.echo.sequence)); 896313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (csfailed) 897313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("(BAD CHECKSUM)"); 898313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_icmph(icp->type, icp->code, ntohl(icp->un.gateway), icp); 899313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return !error_pkt; 900313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 901313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 902313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* MUST NOT */ 903313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 904313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 905313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if ((options & F_FLOOD) && !(options & (F_VERBOSE|F_QUIET))) { 906313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!csfailed) 907313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti write_stdout("!E", 2); 908313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 909313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti write_stdout("!EC", 3); 910313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 911313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 912313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!(options & F_VERBOSE) || uid) 913313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 914313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_PTIMEOFDAY) { 915313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct timeval recv_time; 916313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti gettimeofday(&recv_time, NULL); 917313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("%lu.%06lu ", (unsigned long)recv_time.tv_sec, (unsigned long)recv_time.tv_usec); 918313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 919313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("From %s: ", pr_addr(from->sin_addr.s_addr)); 920313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (csfailed) { 921313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("(BAD CHECKSUM)\n"); 922313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 923313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 924313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_icmph(icp->type, icp->code, ntohl(icp->un.gateway), icp); 925313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 926313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 927313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 928313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (!(options & F_FLOOD)) { 9295df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti pr_options(opts, optlen + sizeof(struct iphdr)); 930313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 931313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (options & F_AUDIBLE) 932313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti putchar('\a'); 933313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti putchar('\n'); 934313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fflush(stdout); 935313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 936313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti putchar('\a'); 937313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fflush(stdout); 938313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 939313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return 0; 940313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 941313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 942313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 943313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#if BYTE_ORDER == LITTLE_ENDIAN 944313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti# define ODDBYTE(v) (v) 945313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#elif BYTE_ORDER == BIG_ENDIAN 946313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti# define ODDBYTE(v) ((u_short)(v) << 8) 947313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#else 948313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti# define ODDBYTE(v) htons((u_short)(v) << 8) 949313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 950313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 951313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiu_short 952313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiin_cksum(const u_short *addr, register int len, u_short csum) 953313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 954313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti register int nleft = len; 955313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti const u_short *w = addr; 956313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti register u_short answer; 957313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti register int sum = csum; 958313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 959313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* 960313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Our algorithm is simple, using a 32 bit accumulator (sum), 961313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * we add sequential 16 bit words to it, and at the end, fold 962313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * back all the carry bits from the top 16 bits into the lower 963313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * 16 bits. 964313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 965313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti while (nleft > 1) { 966313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sum += *w++; 967313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti nleft -= 2; 968313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 969313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 970313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* mop up an odd byte, if necessary */ 971313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (nleft == 1) 972313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sum += ODDBYTE(*(u_char *)w); /* le16toh() may be unavailable on old systems */ 973313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 974313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* 975313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * add back carry outs from top 16 bits to low 16 bits 976313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 977313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ 978313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sum += (sum >> 16); /* add carry */ 979313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti answer = ~sum; /* truncate to 16 bits */ 980313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return (answer); 981313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 982313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 983313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 984313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * pr_icmph -- 985313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Print a descriptive string about an ICMP header. 986313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 987313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittivoid pr_icmph(__u8 type, __u8 code, __u32 info, struct icmphdr *icp) 988313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 989313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch(type) { 990313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_ECHOREPLY: 991313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Echo Reply\n"); 992313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* XXX ID + Seq + Data */ 993313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 994313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_DEST_UNREACH: 995313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch(code) { 996313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_NET_UNREACH: 997313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Net Unreachable\n"); 998313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 999313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_HOST_UNREACH: 1000313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Host Unreachable\n"); 1001313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1002313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PROT_UNREACH: 1003313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Protocol Unreachable\n"); 1004313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1005313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PORT_UNREACH: 1006313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Port Unreachable\n"); 1007313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1008313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_FRAG_NEEDED: 1009313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Frag needed and DF set (mtu = %u)\n", info); 1010313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1011313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_SR_FAILED: 1012313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Source Route Failed\n"); 1013313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1014313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_NET_UNKNOWN: 1015313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Net Unknown\n"); 1016313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1017313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_HOST_UNKNOWN: 1018313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Host Unknown\n"); 1019313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1020313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_HOST_ISOLATED: 1021313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Source Host Isolated\n"); 1022313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1023313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_NET_ANO: 1024313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Net Prohibited\n"); 1025313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1026313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_HOST_ANO: 1027313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Host Prohibited\n"); 1028313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1029313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_NET_UNR_TOS: 1030313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Net Unreachable for Type of Service\n"); 1031313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1032313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_HOST_UNR_TOS: 1033313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Destination Host Unreachable for Type of Service\n"); 1034313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1035313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PKT_FILTERED: 1036313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Packet filtered\n"); 1037313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1038313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PREC_VIOLATION: 1039313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Precedence Violation\n"); 1040313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1041313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PREC_CUTOFF: 1042313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Precedence Cutoff\n"); 1043313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1044313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 1045313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Dest Unreachable, Bad Code: %d\n", code); 1046313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1047313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1048313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp && (options & F_VERBOSE)) 1049313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_iph((struct iphdr*)(icp + 1)); 1050313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1051313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_SOURCE_QUENCH: 1052313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Source Quench\n"); 1053313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp && (options & F_VERBOSE)) 1054313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_iph((struct iphdr*)(icp + 1)); 1055313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1056313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_REDIRECT: 1057313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch(code) { 1058313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_REDIR_NET: 1059313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Redirect Network"); 1060313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1061313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_REDIR_HOST: 1062313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Redirect Host"); 1063313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1064313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_REDIR_NETTOS: 1065313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Redirect Type of Service and Network"); 1066313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1067313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_REDIR_HOSTTOS: 1068313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Redirect Type of Service and Host"); 1069313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1070313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 1071313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Redirect, Bad Code: %d", code); 1072313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1073313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 10745df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti printf("(New nexthop: %s)\n", pr_addr(icp ? icp->un.gateway : info)); 1075313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp && (options & F_VERBOSE)) 1076313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_iph((struct iphdr*)(icp + 1)); 1077313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1078313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_ECHO: 1079313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Echo Request\n"); 1080313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* XXX ID + Seq + Data */ 1081313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1082313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_TIME_EXCEEDED: 1083313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch(code) { 1084313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_EXC_TTL: 1085313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Time to live exceeded\n"); 1086313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1087313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_EXC_FRAGTIME: 1088313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Frag reassembly time exceeded\n"); 1089313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1090313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 1091313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Time exceeded, Bad Code: %d\n", code); 1092313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1093313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1094313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp && (options & F_VERBOSE)) 1095313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_iph((struct iphdr*)(icp + 1)); 1096313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1097313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_PARAMETERPROB: 1098313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Parameter problem: pointer = %u\n", icp ? (ntohl(icp->un.gateway)>>24) : info); 1099313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (icp && (options & F_VERBOSE)) 1100313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_iph((struct iphdr*)(icp + 1)); 1101313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1102313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_TIMESTAMP: 1103313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Timestamp\n"); 1104313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* XXX ID + Seq + 3 timestamps */ 1105313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1106313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_TIMESTAMPREPLY: 1107313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Timestamp Reply\n"); 1108313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* XXX ID + Seq + 3 timestamps */ 1109313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1110313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_INFO_REQUEST: 1111313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Information Request\n"); 1112313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* XXX ID + Seq */ 1113313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1114313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_INFO_REPLY: 1115313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Information Reply\n"); 1116313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* XXX ID + Seq */ 1117313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1118313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef ICMP_MASKREQ 1119313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_MASKREQ: 1120313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Address Mask Request\n"); 1121313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1122313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 1123313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#ifdef ICMP_MASKREPLY 1124313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case ICMP_MASKREPLY: 1125313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Address Mask Reply\n"); 1126313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1127313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 1128313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 1129313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Bad ICMP type: %d\n", type); 1130313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1131313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1132313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1133313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittivoid pr_options(unsigned char * cp, int hlen) 1134313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 1135313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int i, j; 1136313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int optlen, totlen; 1137313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti unsigned char * optptr; 1138313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static int old_rrlen; 1139313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static char old_rr[MAX_IPOPTLEN]; 1140313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1141313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti totlen = hlen-sizeof(struct iphdr); 1142313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optptr = cp; 1143313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1144313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti while (totlen > 0) { 1145313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (*optptr == IPOPT_EOL) 1146313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1147313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (*optptr == IPOPT_NOP) { 1148313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti totlen--; 1149313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optptr++; 1150313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\nNOP"); 1151313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti continue; 1152313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1153313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp = optptr; 1154313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optlen = optptr[1]; 1155313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (optlen < 2 || optlen > totlen) 1156313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1157313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1158313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti switch (*cp) { 1159313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case IPOPT_SSRR: 1160313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case IPOPT_LSRR: 1161313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\n%cSRR: ", *cp==IPOPT_SSRR ? 'S' : 'L'); 1162313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti j = *++cp; 1163313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = *++cp; 1164313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i -= 4; 1165313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp++; 1166313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (j > IPOPT_MINOFF) { 1167313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (;;) { 1168313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u32 address; 1169313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(&address, cp, 4); 1170313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp += 4; 1171313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (address == 0) 1172313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t0.0.0.0"); 1173313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 1174313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%s", pr_addr(address)); 1175313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti j -= 4; 1176313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti putchar('\n'); 1177313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (j <= IPOPT_MINOFF) 1178313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1179313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1180313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1181313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1182313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case IPOPT_RR: 1183313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti j = *++cp; /* get length */ 1184313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = *++cp; /* and pointer */ 1185313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i > j) 1186313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = j; 1187313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i -= IPOPT_MINOFF; 1188313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i <= 0) 1189313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1190313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i == old_rrlen 1191313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti && !memcmp(cp, old_rr, i) 1192313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti && !(options & F_FLOOD)) { 1193313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t(same route)"); 1194313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = ((i + 3) / 4) * 4; 1195313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp += i; 1196313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1197313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1198313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti old_rrlen = i; 1199313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(old_rr, (char *)cp, i); 1200313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\nRR: "); 1201313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp++; 1202313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (;;) { 1203313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u32 address; 1204313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(&address, cp, 4); 1205313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp += 4; 1206313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (address == 0) 1207313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t0.0.0.0"); 1208313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 1209313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%s", pr_addr(address)); 1210313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i -= 4; 1211313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti putchar('\n'); 1212313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i <= 0) 1213313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1214313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1215313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1216313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti case IPOPT_TS: 1217313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti { 1218313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int stdtime = 0, nonstdtime = 0; 1219313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u8 flags; 1220313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti j = *++cp; /* get length */ 1221313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = *++cp; /* and pointer */ 1222313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i > j) 1223313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i = j; 1224313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i -= 5; 1225313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i <= 0) 1226313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1227313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti flags = *++cp; 1228313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\nTS: "); 1229313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp++; 1230313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti for (;;) { 1231313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti long l; 1232313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1233313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if ((flags&0xF) != IPOPT_TS_TSONLY) { 1234313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti __u32 address; 1235313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti memcpy(&address, cp, 4); 1236313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp += 4; 1237313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (address == 0) 1238313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t0.0.0.0"); 1239313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 1240313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%s", pr_addr(address)); 1241313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i -= 4; 1242313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i <= 0) 1243313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1244313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1245313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti l = *cp++; 1246313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti l = (l<<8) + *cp++; 1247313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti l = (l<<8) + *cp++; 1248313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti l = (l<<8) + *cp++; 1249313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1250313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (l & 0x80000000) { 1251313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (nonstdtime==0) 1252313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%ld absolute not-standard", l&0x7fffffff); 1253313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 1254313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%ld not-standard", (l&0x7fffffff) - nonstdtime); 1255313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti nonstdtime = l&0x7fffffff; 1256313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else { 1257313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (stdtime==0) 1258313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%ld absolute", l); 1259313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else 1260313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\t%ld", l - stdtime); 1261313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti stdtime = l; 1262313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1263313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti i -= 4; 1264313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti putchar('\n'); 1265313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (i <= 0) 1266313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1267313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1268313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (flags>>4) 1269313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Unrecorded hops: %d\n", flags>>4); 1270313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1271313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1272313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti default: 1273313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\nunknown option %x", *cp); 1274313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti break; 1275313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1276313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti totlen -= optlen; 1277313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti optptr += optlen; 1278313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1279313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1280313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1281313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1282313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 1283313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * pr_iph -- 1284313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Print an IP header with options. 1285313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 1286313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittivoid pr_iph(struct iphdr *ip) 1287313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 1288313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int hlen; 1289313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti u_char *cp; 1290313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1291313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti hlen = ip->ihl << 2; 1292313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp = (u_char *)ip + 20; /* point to options */ 1293313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1294313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("Vr HL TOS Len ID Flg off TTL Pro cks Src Dst Data\n"); 1295313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf(" %1x %1x %02x %04x %04x", 1296313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ip->version, ip->ihl, ip->tos, ip->tot_len, ip->id); 1297313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf(" %1x %04x", ((ip->frag_off) & 0xe000) >> 13, 1298313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti (ip->frag_off) & 0x1fff); 1299313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf(" %02x %02x %04x", ip->ttl, ip->protocol, ip->check); 1300313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->saddr)); 1301313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->daddr)); 1302313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti printf("\n"); 1303313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti pr_options(cp, hlen); 1304313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1305313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1306313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* 1307313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * pr_addr -- 1308313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * Return an ascii host address as a dotted quad and optionally with 1309313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti * a hostname. 1310313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti */ 1311313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittichar * 1312313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittipr_addr(__u32 addr) 1313313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 1314313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti struct hostent *hp; 1315313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static char buf[4096]; 1316313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1317313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti in_pr_addr = !setjmp(pr_addr_jmp); 1318313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1319313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (exiting || (options & F_NUMERIC) || 1320313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti !(hp = gethostbyaddr((char *)&addr, 4, AF_INET))) 1321313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sprintf(buf, "%s", inet_ntoa(*(struct in_addr *)&addr)); 1322313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti else { 1323313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char *s; 1324313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#if USE_IDN 1325313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (idna_to_unicode_lzlz(hp->h_name, &s, 0) != IDNA_SUCCESS) 1326313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti s = NULL; 1327313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#else 1328313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti s = NULL; 1329313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 1330313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti snprintf(buf, sizeof(buf), "%s (%s)", s ? s : hp->h_name, 1331313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti inet_ntoa(*(struct in_addr *)&addr)); 1332313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#if USE_IDN 1333313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti free(s); 1334313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#endif 1335313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1336313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1337313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti in_pr_addr = 0; 1338313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1339313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return(buf); 1340313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1341313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1342313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1343313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti/* Set Type of Service (TOS) and other Quality of Service relating bits */ 1344313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittiint parsetos(char *str) 1345313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 1346313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti const char *cp; 1347313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti int tos; 1348313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti char *ep; 1349313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1350313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* handle both hex and decimal values */ 1351313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) { 1352313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti cp = str + 2; 1353313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti tos = (int)strtol(cp, &ep, 16); 1354313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } else 1355313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti tos = (int)strtol(str, &ep, 10); 1356313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1357313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* doesn't look like decimal or hex, eh? */ 1358313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (*ep != '\0') { 1359313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: \"%s\" bad value for TOS\n", str); 1360313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 1361313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1362313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1363313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (tos > TOS_MAX) { 1364313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, "ping: the decimal value of TOS bits must be 0-254 (or zero)\n"); 1365313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 1366313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti } 1367313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return(tos); 1368313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1369313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1370313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#include <linux/filter.h> 1371313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1372313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittivoid install_filter(void) 1373313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 1374313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static int once; 1375313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static struct sock_filter insns[] = { 1376313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_STMT(BPF_LDX|BPF_B|BPF_MSH, 0), /* Skip IP header. F..g BSD... Look into ping6. */ 1377313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_STMT(BPF_LD|BPF_H|BPF_IND, 4), /* Load icmp echo ident */ 1378313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0xAAAA, 0, 1), /* Ours? */ 1379313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_STMT(BPF_RET|BPF_K, ~0U), /* Yes, it passes. */ 1380313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_STMT(BPF_LD|BPF_B|BPF_IND, 0), /* Load icmp type */ 1381313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, ICMP_ECHOREPLY, 1, 0), /* Echo? */ 1382313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_STMT(BPF_RET|BPF_K, 0xFFFFFFF), /* No. It passes. */ 1383313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti BPF_STMT(BPF_RET|BPF_K, 0) /* Echo with wrong ident. Reject. */ 1384313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti }; 1385313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti static struct sock_fprog filter = { 1386313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti sizeof insns / sizeof(insns[0]), 1387313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti insns 1388313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti }; 1389313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 13905df1daf326001b8d7d91a8b726ded17e09309952Lorenzo Colitti if (once || using_ping_socket) 1391313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti return; 1392313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti once = 1; 1393313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1394313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti /* Patch bpflet for current identifier. */ 1395313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti insns[2] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, htons(ident), 0, 1); 1396313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1397313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti if (setsockopt(icmp_sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter))) 1398313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti perror("WARNING: failed to install socket filter\n"); 1399313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1400313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1401313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti#define USAGE_NEWLINE "\n " 1402313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti 1403313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colittivoid usage(void) 1404313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti{ 1405313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti fprintf(stderr, 1406313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti "Usage: ping" 1407313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-" 1408313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti "aAbBdDfhLnOqrRUvV" 1409313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti "]" 1410313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-c count]" 1411313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-i interval]" 1412313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-I interface]" 1413313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti USAGE_NEWLINE 1414313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-m mark]" 1415313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-M pmtudisc_option]" 1416313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-l preload]" 1417313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-p pattern]" 1418313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-Q tos]" 1419313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti USAGE_NEWLINE 1420313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-s packetsize]" 1421313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-S sndbuf]" 1422313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-t ttl]" 1423313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-T timestamp_option]" 1424313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti USAGE_NEWLINE 1425313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-w deadline]" 1426313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [-W timeout]" 1427313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti " [hop1 ...] destination" 1428313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti "\n" 1429313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti ); 1430313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti exit(2); 1431313379eb6b9da55f7371adef39a92153a0707d4aLorenzo Colitti} 1432