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 #include "ping.h" 48 #ifdef INET6 49 #include "ping6.h" 50 #endif 51 52 #ifdef INET6 53 #define OPTSTR ":46" 54 #else 55 #define OPTSTR ":4" 56 #endif 57 58 int 59 main(int argc, char *argv[]) 60 { 61 struct in_addr a; 62 struct addrinfo hints; 63 int ch; 64 bool ipv4; 65 #ifdef INET6 66 struct in6_addr a6; 67 bool ipv6; 68 69 ipv6 = false; 70 #endif 71 ipv4 = false; 72 73 while ((ch = getopt(argc, argv, OPTSTR)) != -1) { 74 switch(ch) { 75 case '4': 76 ipv4 = true; 77 break; 78 #ifdef INET6 79 case '6': 80 ipv6 = true; 81 break; 82 #endif 83 default: 84 break; 85 } 86 } 87 88 if (optind >= argc) 89 usage(); 90 91 optreset = 1; 92 optind = 1; 93 #ifdef INET6 94 if (ipv4 && ipv6) 95 errx(1, "-4 and -6 cannot be used simultaneously"); 96 #endif 97 98 if (inet_pton(AF_INET, argv[argc - 1], &a) == 1) { 99 #ifdef INET6 100 if (ipv6) 101 errx(1, "IPv6 requested but IPv4 target address " 102 "provided"); 103 #endif 104 hints.ai_family = AF_INET; 105 } 106 #ifdef INET6 107 else if (inet_pton(AF_INET6, argv[argc - 1], &a6) == 1) { 108 if (ipv4) 109 errx(1, "IPv4 requested but IPv6 target address " 110 "provided"); 111 hints.ai_family = AF_INET6; 112 } else if (ipv6) 113 hints.ai_family = AF_INET6; 114 #endif 115 else if (ipv4) 116 hints.ai_family = AF_INET; 117 else { 118 struct addrinfo *res; 119 120 memset(&hints, 0, sizeof(hints)); 121 hints.ai_socktype = SOCK_RAW; 122 hints.ai_family = AF_UNSPEC; 123 getaddrinfo(argv[argc - 1], NULL, &hints, &res); 124 if (res != NULL) { 125 hints.ai_family = res[0].ai_family; 126 freeaddrinfo(res); 127 } 128 } 129 130 if (hints.ai_family == AF_INET) 131 return ping(argc, argv); 132 #ifdef INET6 133 else if (hints.ai_family == AF_INET6) 134 return ping6(argc, argv); 135 #endif 136 else 137 errx(1, "Unknown host"); 138 } 139 140 void 141 usage(void) 142 { 143 (void)fprintf(stderr, 144 "usage: ping [-4AaDdfHnoQqRrv] [-C pcp] [-c count] " 145 "[-G sweepmaxsize]\n" 146 " [-g sweepminsize] [-h sweepincrsize] [-i wait] " 147 "[-l preload]\n" 148 " [-M mask | time] [-m ttl]" 149 #ifdef IPSEC 150 "[-P policy] " 151 #endif 152 "[-p pattern] [-S src_addr] \n" 153 " [-s packetsize] [-t timeout] [-W waittime] [-z tos] " 154 "IPv4-host\n" 155 " ping [-4AaDdfHLnoQqRrv] [-C pcp] [-c count] [-I iface] " 156 "[-i wait]\n" 157 " [-l preload] [-M mask | time] [-m ttl] " 158 #ifdef IPSEC 159 "[-P policy] " 160 #endif 161 "[-p pattern]\n" 162 " [-S src_addr] [-s packetsize] [-T ttl] [-t timeout] [-W waittime]\n" 163 " [-z tos] IPv4-mcast-group\n" 164 #ifdef INET6 165 " ping [-6aADd" 166 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) 167 "E" 168 #endif 169 "fHnNoOq" 170 #ifdef IPV6_USE_MIN_MTU 171 "u" 172 #endif 173 "vyY" 174 #if defined(IPSEC) && !defined(IPSEC_POLICY_IPSEC) 175 "Z" 176 #endif 177 "] " 178 "[-b bufsiz] [-c count] [-e gateway]\n" 179 " [-I interface] [-i wait] [-k addrtype] [-l preload] " 180 "[-m hoplimit]\n" 181 " [-p pattern]" 182 #if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) 183 " [-P policy]" 184 #endif 185 " [-S sourceaddr] [-s packetsize] [-t timeout]\n" 186 " [-W waittime] [-z tclass] [IPv6-hops ...] IPv6-host\n" 187 #endif /* INET6 */ 188 ); 189 190 exit(1); 191 } 192