1 /* $NetBSD: ctl.c,v 1.10 2012/03/20 20:34:59 matt 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: ctl.c,v 1.10 2012/03/20 20:34:59 matt 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, 0, {0}, {0} }; 51 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET, 0, {0}, {0} }; 52 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET, 0, {0}, {0} }; 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 72 (void)memset(&my_addr, 0, sizeof(my_addr)); 73 my_addr.sin_family = AF_INET; 74 #ifdef BSD4_4 75 my_addr.sin_len = sizeof(my_addr); 76 #endif 77 my_addr.sin_addr = my_machine_addr; 78 my_addr.sin_port = 0; 79 sockt = socket(AF_INET, SOCK_STREAM, 0); 80 if (sockt == -1) 81 p_error("Bad socket"); 82 if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0) 83 p_error("Binding local socket"); 84 length = sizeof(my_addr); 85 if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1) 86 p_error("Bad address for socket"); 87 } 88 89 /* open the ctl socket */ 90 void 91 open_ctl(void) 92 { 93 socklen_t length; 94 95 (void)memset(&ctl_addr, 0, sizeof(ctl_addr)); 96 ctl_addr.sin_family = AF_INET; 97 #ifdef BSD4_4 98 ctl_addr.sin_len = sizeof(my_addr); 99 #endif 100 ctl_addr.sin_port = 0; 101 ctl_addr.sin_addr = my_machine_addr; 102 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); 103 if (ctl_sockt == -1) 104 p_error("Bad socket"); 105 if (bind(ctl_sockt, 106 (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0) 107 p_error("Couldn't bind to control socket"); 108 length = sizeof(ctl_addr); 109 if (getsockname(ctl_sockt, 110 (struct sockaddr *)&ctl_addr, &length) == -1) 111 p_error("Bad address for ctl socket"); 112 } 113 114 /* print_addr is a debug print routine */ 115 void 116 print_addr(struct sockaddr_in addr) 117 { 118 int i; 119 120 printf("addr = %s, port = %o, family = %o zero = ", 121 inet_ntoa(addr.sin_addr), addr.sin_port, addr.sin_family); 122 for (i = 0; i<8;i++) 123 printf("%o ", (int)addr.sin_zero[i]); 124 putchar('\n'); 125 } 126