1 /* $NetBSD: ctl.c,v 1.5 2000/03/02 17:37:46 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 __RCSID("$NetBSD: ctl.c,v 1.5 2000/03/02 17:37:46 christos Exp $"); 42 #endif /* not lint */ 43 44 /* 45 * This file handles haggling with the various talk daemons to 46 * get a socket to talk to. sockt is opened and connected in 47 * the progress 48 */ 49 50 #include "talk.h" 51 #include <arpa/inet.h> 52 #include "talk_ctl.h" 53 54 struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; 55 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; 56 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; 57 58 /* inet addresses of the two machines */ 59 struct in_addr my_machine_addr; 60 struct in_addr his_machine_addr; 61 62 u_short daemon_port; /* port number of the talk daemon */ 63 64 int ctl_sockt; 65 int sockt; 66 int invitation_waiting = 0; 67 68 CTL_MSG msg; 69 70 void 71 open_sockt() 72 { 73 int length; 74 75 76 (void)memset(&my_addr, 0, sizeof(my_addr)); 77 my_addr.sin_family = AF_INET; 78 #ifdef BSD4_4 79 my_addr.sin_len = sizeof(my_addr); 80 #endif 81 my_addr.sin_addr = my_machine_addr; 82 my_addr.sin_port = 0; 83 sockt = socket(AF_INET, SOCK_STREAM, 0); 84 if (sockt <= 0) 85 p_error("Bad socket"); 86 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) 87 p_error("Binding local socket"); 88 length = sizeof(my_addr); 89 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) 90 p_error("Bad address for socket"); 91 } 92 93 /* open the ctl socket */ 94 void 95 open_ctl() 96 { 97 int length; 98 99 (void)memset(&ctl_addr, 0, sizeof(ctl_addr)); 100 ctl_addr.sin_family = AF_INET; 101 #ifdef BSD4_4 102 ctl_addr.sin_len = sizeof(my_addr); 103 #endif 104 ctl_addr.sin_port = 0; 105 ctl_addr.sin_addr = my_machine_addr; 106 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); 107 if (ctl_sockt <= 0) 108 p_error("Bad socket"); 109 if (bind(ctl_sockt, 110 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) 111 p_error("Couldn't bind to control socket"); 112 length = sizeof(ctl_addr); 113 if (getsockname(ctl_sockt, 114 (struct sockaddr *)&ctl_addr, &length) == -1) 115 p_error("Bad address for ctl socket"); 116 } 117 118 /* print_addr is a debug print routine */ 119 void 120 print_addr(addr) 121 struct sockaddr_in addr; 122 { 123 int i; 124 125 printf("addr = %s, port = %o, family = %o zero = ", 126 inet_ntoa(addr.sin_addr), addr.sin_port, addr.sin_family); 127 for (i = 0; i<8;i++) 128 printf("%o ", (int)addr.sin_zero[i]); 129 putchar('\n'); 130 } 131