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Annotation of 43BSDTahoe/ucb/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 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      5.4 (Berkeley) 6/29/88";
                     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 = { AF_INET };
                     31: struct sockaddr_in ctl_addr = { AF_INET };
                     32: struct sockaddr_in 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: }

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