1 /* $OpenBSD: ctl.c,v 1.9 2004/03/02 21:04:42 tedu Exp $ */ 2 /* $NetBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 static const char rcsid[] = "$OpenBSD: ctl.c,v 1.9 2004/03/02 21:04:42 tedu Exp $"; 38 #endif /* not lint */ 39 40 /* 41 * This file handles haggling with the various talk daemons to 42 * get a socket to talk to. sockt is opened and connected in 43 * the progress 44 */ 45 46 #include "talk.h" 47 #include <arpa/inet.h> 48 #include "talk_ctl.h" 49 50 struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; 51 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; 52 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; 53 54 /* inet addresses of the two machines */ 55 struct in_addr my_machine_addr; 56 struct in_addr his_machine_addr; 57 58 u_short daemon_port; /* port number of the talk daemon */ 59 60 int ctl_sockt; 61 int sockt; 62 int invitation_waiting = 0; 63 64 CTL_MSG msg; 65 66 void 67 open_sockt(void) 68 { 69 socklen_t length; 70 71 my_addr.sin_addr = my_machine_addr; 72 my_addr.sin_port = 0; 73 sockt = socket(AF_INET, SOCK_STREAM, 0); 74 if (sockt == -1) 75 quit("Bad socket", 1); 76 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) 77 quit("Binding local socket", 1); 78 length = sizeof(my_addr); 79 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) 80 quit("Bad address for socket", 1); 81 } 82 83 /* open the ctl socket */ 84 void 85 open_ctl(void) 86 { 87 socklen_t length; 88 89 ctl_addr.sin_port = 0; 90 ctl_addr.sin_addr = my_machine_addr; 91 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); 92 if (ctl_sockt == -1) 93 quit("Bad socket", 1); 94 if (bind(ctl_sockt, 95 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) 96 quit("Couldn't bind to control socket", 1); 97 length = sizeof(ctl_addr); 98 if (getsockname(ctl_sockt, 99 (struct sockaddr *)&ctl_addr, &length) == -1) 100 quit("Bad address for ctl socket", 1); 101 } 102 103 /* print_addr is a debug print routine */ 104 void 105 print_addr(struct sockaddr_in addr) 106 { 107 int i; 108 109 printf("addr = %s, port = %o, family = %o zero = ", 110 inet_ntoa(addr.sin_addr), addr.sin_port, addr.sin_family); 111 for (i = 0; i < 8; i++) 112 printf("%o ", (int)addr.sin_zero[i]); 113 putchar('\n'); 114 } 115