1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #ifndef lint 19 static char sccsid[] = "@(#)ctl.c 5.5 (Berkeley) 03/08/89"; 20 #endif /* not lint */ 21 22 /* 23 * This file handles haggling with the various talk daemons to 24 * get a socket to talk to. sockt is opened and connected in 25 * the progress 26 */ 27 28 #include "talk_ctl.h" 29 30 struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; 31 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; 32 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; 33 34 /* inet addresses of the two machines */ 35 struct in_addr my_machine_addr; 36 struct in_addr his_machine_addr; 37 38 u_short daemon_port; /* port number of the talk daemon */ 39 40 int ctl_sockt; 41 int sockt; 42 int invitation_waiting = 0; 43 44 CTL_MSG msg; 45 46 open_sockt() 47 { 48 int length; 49 50 my_addr.sin_addr = my_machine_addr; 51 my_addr.sin_port = 0; 52 sockt = socket(AF_INET, SOCK_STREAM, 0); 53 if (sockt <= 0) 54 p_error("Bad socket"); 55 if (bind(sockt, &my_addr, sizeof(my_addr)) != 0) 56 p_error("Binding local socket"); 57 length = sizeof(my_addr); 58 if (getsockname(sockt, &my_addr, &length) == -1) 59 p_error("Bad address for socket"); 60 } 61 62 /* open the ctl socket */ 63 open_ctl() 64 { 65 int length; 66 67 ctl_addr.sin_port = 0; 68 ctl_addr.sin_addr = my_machine_addr; 69 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); 70 if (ctl_sockt <= 0) 71 p_error("Bad socket"); 72 if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr), 0) != 0) 73 p_error("Couldn't bind to control socket"); 74 length = sizeof(ctl_addr); 75 if (getsockname(ctl_sockt, &ctl_addr, &length) == -1) 76 p_error("Bad address for ctl socket"); 77 } 78 79 /* print_addr is a debug print routine */ 80 print_addr(addr) 81 struct sockaddr_in addr; 82 { 83 int i; 84 85 printf("addr = %x, port = %o, family = %o zero = ", 86 addr.sin_addr, addr.sin_port, addr.sin_family); 87 for (i = 0; i<8;i++) 88 printf("%o ", (int)addr.sin_zero[i]); 89 putchar('\n'); 90 } 91