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Annotation of 43BSD/ucb/talk/ctl.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)ctl.c      5.2 (Berkeley) 3/13/86";
        !             9: #endif not lint
        !            10: 
        !            11: /*
        !            12:  * This file handles haggling with the various talk daemons to
        !            13:  * get a socket to talk to. sockt is opened and connected in
        !            14:  * the progress
        !            15:  */
        !            16: 
        !            17: #include "talk_ctl.h"
        !            18: 
        !            19: struct sockaddr_in daemon_addr = { AF_INET };
        !            20: struct sockaddr_in ctl_addr = { AF_INET };
        !            21: struct sockaddr_in my_addr = { AF_INET };
        !            22: 
        !            23:        /* inet addresses of the two machines */
        !            24: struct in_addr my_machine_addr;
        !            25: struct in_addr his_machine_addr;
        !            26: 
        !            27: u_short daemon_port;   /* port number of the talk daemon */
        !            28: 
        !            29: int    ctl_sockt;
        !            30: int    sockt;
        !            31: int    invitation_waiting = 0;
        !            32: 
        !            33: CTL_MSG msg;
        !            34: 
        !            35: open_sockt()
        !            36: {
        !            37:        int length;
        !            38: 
        !            39:        my_addr.sin_addr = my_machine_addr;
        !            40:        my_addr.sin_port = 0;
        !            41:        sockt = socket(AF_INET, SOCK_STREAM, 0);
        !            42:        if (sockt <= 0)
        !            43:                p_error("Bad socket");
        !            44:        if (bind(sockt, &my_addr, sizeof(my_addr)) != 0)
        !            45:                p_error("Binding local socket");
        !            46:        length = sizeof(my_addr);
        !            47:        if (getsockname(sockt, &my_addr, &length) == -1)
        !            48:                p_error("Bad address for socket");
        !            49: }
        !            50: 
        !            51: /* open the ctl socket */
        !            52: open_ctl() 
        !            53: {
        !            54:        int length;
        !            55: 
        !            56:        ctl_addr.sin_port = 0;
        !            57:        ctl_addr.sin_addr = my_machine_addr;
        !            58:        ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
        !            59:        if (ctl_sockt <= 0)
        !            60:                p_error("Bad socket");
        !            61:        if (bind(ctl_sockt, &ctl_addr, sizeof(ctl_addr), 0) != 0)
        !            62:                p_error("Couldn't bind to control socket");
        !            63:        length = sizeof(ctl_addr);
        !            64:        if (getsockname(ctl_sockt, &ctl_addr, &length) == -1)
        !            65:                p_error("Bad address for ctl socket");
        !            66: }
        !            67: 
        !            68: /* print_addr is a debug print routine */
        !            69: print_addr(addr)
        !            70:        struct sockaddr_in addr;
        !            71: {
        !            72:        int i;
        !            73: 
        !            74:        printf("addr = %x, port = %o, family = %o zero = ",
        !            75:                addr.sin_addr, addr.sin_port, addr.sin_family);
        !            76:        for (i = 0; i<8;i++)
        !            77:        printf("%o ", (int)addr.sin_zero[i]);
        !            78:        putchar('\n');
        !            79: }

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