1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (C) 2019 Jan Sucan <jansucan@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/types.h> 33 #include <sys/socket.h> 34 35 #include <arpa/inet.h> 36 #include <netdb.h> 37 #include <netinet/in.h> 38 39 #include <err.h> 40 #include <stdbool.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 #include "main.h" 47 #ifdef INET 48 #include "ping.h" 49 #endif 50 #ifdef INET6 51 #include "ping6.h" 52 #endif 53 54 #if defined(INET) && defined(INET6) 55 #define OPTSTR PING6OPTS PING4OPTS 56 #elif defined(INET) 57 #define OPTSTR PING4OPTS 58 #elif defined(INET6) 59 #define OPTSTR PING6OPTS 60 #endif 61 62 int 63 main(int argc, char *argv[]) 64 { 65 #if defined(INET) && defined(INET6) 66 struct in_addr a; 67 struct in6_addr a6; 68 #endif 69 #if defined(INET) || defined(INET6) 70 struct addrinfo hints; 71 #endif 72 int ch; 73 #ifdef INET 74 bool ipv4 = false; 75 #endif 76 #ifdef INET6 77 bool ipv6 = false; 78 79 if (strcmp(getprogname(), "ping6") == 0) 80 ipv6 = true; 81 #endif 82 83 while ((ch = getopt(argc, argv, ":" OPTSTR)) != -1) { 84 switch(ch) { 85 #ifdef INET 86 case '4': 87 ipv4 = true; 88 break; 89 #endif 90 #ifdef INET6 91 case '6': 92 ipv6 = true; 93 break; 94 #endif 95 default: 96 break; 97 } 98 } 99 100 if (optind >= argc) 101 usage(); 102 103 optreset = 1; 104 optind = 1; 105 #if defined(INET) && defined(INET6) 106 if (ipv4 && ipv6) 107 errx(1, "-4 and -6 cannot be used simultaneously"); 108 #endif 109 110 #if defined(INET) && defined(INET6) 111 if (inet_pton(AF_INET, argv[argc - 1], &a) == 1) { 112 if (ipv6) 113 errx(1, "IPv6 requested but IPv4 target address " 114 "provided"); 115 hints.ai_family = AF_INET; 116 } 117 else if (inet_pton(AF_INET6, argv[argc - 1], &a6) == 1) { 118 if (ipv4) 119 errx(1, "IPv4 requested but IPv6 target address " 120 "provided"); 121 hints.ai_family = AF_INET6; 122 } else if (ipv6) 123 hints.ai_family = AF_INET6; 124 else if (ipv4) 125 hints.ai_family = AF_INET; 126 else { 127 if (!feature_present("inet6")) 128 hints.ai_family = AF_INET; 129 else if (!feature_present("inet")) 130 hints.ai_family = AF_INET6; 131 else { 132 struct addrinfo *res; 133 134 memset(&hints, 0, sizeof(hints)); 135 hints.ai_socktype = SOCK_RAW; 136 hints.ai_family = AF_UNSPEC; 137 getaddrinfo(argv[argc - 1], NULL, &hints, &res); 138 if (res != NULL) { 139 hints.ai_family = res[0].ai_family; 140 freeaddrinfo(res); 141 } 142 } 143 } 144 #elif defined(INET) 145 hints.ai_family = AF_INET; 146 #elif defined(INET6) 147 hints.ai_family = AF_INET6; 148 #endif 149 150 #ifdef INET 151 if (hints.ai_family == AF_INET) 152 return ping(argc, argv); 153 #endif /* INET */ 154 #ifdef INET6 155 if (hints.ai_family == AF_INET6) 156 return ping6(argc, argv); 157 #endif /* INET6 */ 158 errx(1, "Unknown host"); 159 } 160 161 void 162 usage(void) 163 { 164 (void)fprintf(stderr, 165 "usage:\n" 166 #ifdef INET 167 "\tping [-4AaDdfHnoQqRrv] [-C pcp] [-c count] " 168 "[-G sweepmaxsize]\n" 169 " [-g sweepminsize] [-h sweepincrsize] [-i wait] " 170 "[-l preload]\n" 171 " [-M mask | time] [-m ttl] " 172 #ifdef IPSEC 173 "[-P policy] " 174 #endif 175 "[-p pattern] [-S src_addr] \n" 176 " [-s packetsize] [-t timeout] [-W waittime] [-z tos] " 177 "IPv4-host\n" 178 "\tping [-4AaDdfHLnoQqRrv] [-C pcp] [-c count] [-I iface] " 179 "[-i wait]\n" 180 " [-l preload] [-M mask | time] [-m ttl] " 181 #ifdef IPSEC 182 "[-P policy] " 183 #endif 184 "[-p pattern]\n" 185 " [-S src_addr] [-s packetsize] [-T ttl] [-t timeout] [-W waittime]\n" 186 " [-z tos] IPv4-mcast-group\n" 187 #endif /* INET */ 188 #ifdef INET6 189 "\tping [-6AaDd" 190 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) 191 "E" 192 #endif 193 "fHnNoOq" 194 #ifdef IPV6_USE_MIN_MTU 195 "u" 196 #endif 197 "vyY" 198 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) 199 "Z" 200 #endif 201 "] " 202 "[-b bufsiz] [-c count] [-e gateway]\n" 203 " [-I interface] [-i wait] [-k addrtype] [-l preload] " 204 "[-m hoplimit]\n" 205 " [-p pattern]" 206 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 207 " [-P policy]" 208 #endif 209 " [-S sourceaddr] [-s packetsize] [-t timeout]\n" 210 " [-W waittime] [-z tclass] [IPv6-hops ...] IPv6-host\n" 211 #endif /* INET6 */ 212 ); 213 214 exit(1); 215 } 216