1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)ctl.c 5.6 (Berkeley) 06/01/90"; 10 #endif /* not lint */ 11 12 /* 13 * This file handles haggling with the various talk daemons to 14 * get a socket to talk to. sockt is opened and connected in 15 * the progress 16 */ 17 18 #include "talk_ctl.h" 19 20 struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET }; 21 struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET }; 22 struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET }; 23 24 /* inet addresses of the two machines */ 25 struct in_addr my_machine_addr; 26 struct in_addr his_machine_addr; 27 28 u_short daemon_port; /* port number of the talk daemon */ 29 30 int ctl_sockt; 31 int sockt; 32 int invitation_waiting = 0; 33 34 CTL_MSG msg; 35 36 open_sockt() 37 { 38 int length; 39 40 my_addr.sin_addr = my_machine_addr; 41 my_addr.sin_port = 0; 42 sockt = socket(AF_INET, SOCK_STREAM, 0); 43 if (sockt <= 0) 44 p_error("Bad socket"); 45 if (bind(sockt, &my_addr, sizeof(my_addr)) != 0) 46 p_error("Binding local socket"); 47 length = sizeof(my_addr); 48 if (getsockname(sockt, &my_addr, &length) == -1) 49 p_error("Bad address for socket"); 50 } 51 52 /* open the ctl socket */ 53 open_ctl() 54 { 55 int length; 56 57 ctl_addr.sin_port = 0; 58 ctl_addr.sin_addr = my_machine_addr; 59 ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0); 60 if (ctl_sockt <= 0) 61 p_error("Bad socket"); 62 if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr), 0) != 0) 63 p_error("Couldn't bind to control socket"); 64 length = sizeof(ctl_addr); 65 if (getsockname(ctl_sockt, &ctl_addr, &length) == -1) 66 p_error("Bad address for ctl socket"); 67 } 68 69 /* print_addr is a debug print routine */ 70 print_addr(addr) 71 struct sockaddr_in addr; 72 { 73 int i; 74 75 printf("addr = %x, port = %o, family = %o zero = ", 76 addr.sin_addr, addr.sin_port, addr.sin_family); 77 for (i = 0; i<8;i++) 78 printf("%o ", (int)addr.sin_zero[i]); 79 putchar('\n'); 80 } 81