1 /*- 2 * Copyright (c) 2006 Maxim Konovalov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * Bug in IP code panics the system at close(2) on 29 * connected SOCK_RAW, IPPROTO_IP socket. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/socket.h> 34 #include <netinet/in.h> 35 36 #include <err.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <strings.h> 40 #include <unistd.h> 41 42 static void 43 usage(void) 44 { 45 46 fprintf(stderr, "rawconnect: no arguments\n"); 47 exit(1); 48 } 49 50 int 51 main(int argc, __unused char *argv[]) 52 { 53 struct sockaddr_in sin; 54 int sock; 55 56 if (argc != 1) 57 usage(); 58 59 bzero(&sin, sizeof(sin)); 60 sin.sin_len = sizeof(sin); 61 sin.sin_family = AF_INET; 62 sin.sin_addr.s_addr = INADDR_LOOPBACK; 63 sin.sin_port = htons(65534); 64 65 sock = socket(PF_INET, SOCK_RAW, IPPROTO_IP); 66 if (sock == -1) 67 err(1, "socket"); 68 69 if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1) 70 err(1, "connect"); 71 72 close(sock); 73 74 return (0); 75 } 76