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Annotation of 43BSDReno/usr.bin/talk/ctl.c, revision 1.1.1.1

1.1       root        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: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: static char sccsid[] = "@(#)ctl.c      5.6 (Berkeley) 6/1/90";
                     22: #endif /* not lint */
                     23: 
                     24: /*
                     25:  * This file handles haggling with the various talk daemons to
                     26:  * get a socket to talk to. sockt is opened and connected in
                     27:  * the progress
                     28:  */
                     29: 
                     30: #include "talk_ctl.h"
                     31: 
                     32: struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
                     33: struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
                     34: struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
                     35: 
                     36:        /* inet addresses of the two machines */
                     37: struct in_addr my_machine_addr;
                     38: struct in_addr his_machine_addr;
                     39: 
                     40: u_short daemon_port;   /* port number of the talk daemon */
                     41: 
                     42: int    ctl_sockt;
                     43: int    sockt;
                     44: int    invitation_waiting = 0;
                     45: 
                     46: CTL_MSG msg;
                     47: 
                     48: open_sockt()
                     49: {
                     50:        int length;
                     51: 
                     52:        my_addr.sin_addr = my_machine_addr;
                     53:        my_addr.sin_port = 0;
                     54:        sockt = socket(AF_INET, SOCK_STREAM, 0);
                     55:        if (sockt <= 0)
                     56:                p_error("Bad socket");
                     57:        if (bind(sockt, &my_addr, sizeof(my_addr)) != 0)
                     58:                p_error("Binding local socket");
                     59:        length = sizeof(my_addr);
                     60:        if (getsockname(sockt, &my_addr, &length) == -1)
                     61:                p_error("Bad address for socket");
                     62: }
                     63: 
                     64: /* open the ctl socket */
                     65: open_ctl() 
                     66: {
                     67:        int length;
                     68: 
                     69:        ctl_addr.sin_port = 0;
                     70:        ctl_addr.sin_addr = my_machine_addr;
                     71:        ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
                     72:        if (ctl_sockt <= 0)
                     73:                p_error("Bad socket");
                     74:        if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr), 0) != 0)
                     75:                p_error("Couldn't bind to control socket");
                     76:        length = sizeof(ctl_addr);
                     77:        if (getsockname(ctl_sockt, &ctl_addr, &length) == -1)
                     78:                p_error("Bad address for ctl socket");
                     79: }
                     80: 
                     81: /* print_addr is a debug print routine */
                     82: print_addr(addr)
                     83:        struct sockaddr_in addr;
                     84: {
                     85:        int i;
                     86: 
                     87:        printf("addr = %x, port = %o, family = %o zero = ",
                     88:                addr.sin_addr, addr.sin_port, addr.sin_family);
                     89:        for (i = 0; i<8;i++)
                     90:        printf("%o ", (int)addr.sin_zero[i]);
                     91:        putchar('\n');
                     92: }

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