1 /* $OpenBSD: ctl.c,v 1.12 2010/08/12 23:31:29 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 /* 34 * This file handles haggling with the various talk daemons to 35 * get a socket to talk to. sockt is opened and connected in 36 * the progress 37 */ 38 39 #include "talk.h" 40 #include <arpa/inet.h> 41 #include "talk_ctl.h" 42 43 struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; 44 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; 45 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; 46 47 /* inet addresses of the two machines */ 48 struct in_addr my_machine_addr; 49 struct in_addr his_machine_addr; 50 51 u_short daemon_port; /* port number of the talk daemon */ 52 53 int ctl_sockt; 54 int sockt; 55 int invitation_waiting; 56 57 CTL_MSG msg; 58 59 void 60 open_sockt(void) 61 { 62 socklen_t length; 63 64 my_addr.sin_addr = my_machine_addr; 65 my_addr.sin_port = 0; 66 sockt = socket(AF_INET, SOCK_STREAM, 0); 67 if (sockt == -1) 68 quit("Bad socket", 1); 69 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) 70 quit("Binding local socket", 1); 71 length = sizeof(my_addr); 72 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) 73 quit("Bad address for socket", 1); 74 } 75 76 /* open the ctl socket */ 77 void 78 open_ctl(void) 79 { 80 socklen_t length; 81 82 ctl_addr.sin_port = 0; 83 ctl_addr.sin_addr = my_machine_addr; 84 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); 85 if (ctl_sockt == -1) 86 quit("Bad socket", 1); 87 if (bind(ctl_sockt, 88 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) 89 quit("Couldn't bind to control socket", 1); 90 length = sizeof(ctl_addr); 91 if (getsockname(ctl_sockt, 92 (struct sockaddr *)&ctl_addr, &length) == -1) 93 quit("Bad address for ctl socket", 1); 94 } 95