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Annotation of src/usr.bin/talk/ctl.c, Revision 1.1.1.1

1.1       deraadt     1: /*     $NetBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $      */
                      2:
                      3: /*
                      4:  * Copyright (c) 1983, 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by the University of
                     18:  *     California, Berkeley and its contributors.
                     19:  * 4. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
                     36: #ifndef lint
                     37: #if 0
                     38: static char sccsid[] = "@(#)ctl.c      8.1 (Berkeley) 6/6/93";
                     39: #endif
                     40: static char rcsid[] = "$NetBSD: ctl.c,v 1.3 1994/12/09 02:14:10 jtc Exp $";
                     41: #endif /* not lint */
                     42:
                     43: /*
                     44:  * This file handles haggling with the various talk daemons to
                     45:  * get a socket to talk to. sockt is opened and connected in
                     46:  * the progress
                     47:  */
                     48:
                     49: #include <sys/types.h>
                     50: #include <sys/socket.h>
                     51: #include <protocols/talkd.h>
                     52: #include <netinet/in.h>
                     53: #include "talk.h"
                     54: #include "talk_ctl.h"
                     55:
                     56: struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
                     57: struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
                     58: struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
                     59:
                     60:        /* inet addresses of the two machines */
                     61: struct in_addr my_machine_addr;
                     62: struct in_addr his_machine_addr;
                     63:
                     64: u_short daemon_port;   /* port number of the talk daemon */
                     65:
                     66: int    ctl_sockt;
                     67: int    sockt;
                     68: int    invitation_waiting = 0;
                     69:
                     70: CTL_MSG msg;
                     71:
                     72: open_sockt()
                     73: {
                     74:        int length;
                     75:
                     76:        my_addr.sin_addr = my_machine_addr;
                     77:        my_addr.sin_port = 0;
                     78:        sockt = socket(AF_INET, SOCK_STREAM, 0);
                     79:        if (sockt <= 0)
                     80:                p_error("Bad socket");
                     81:        if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
                     82:                p_error("Binding local socket");
                     83:        length = sizeof(my_addr);
                     84:        if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
                     85:                p_error("Bad address for socket");
                     86: }
                     87:
                     88: /* open the ctl socket */
                     89: open_ctl()
                     90: {
                     91:        int length;
                     92:
                     93:        ctl_addr.sin_port = 0;
                     94:        ctl_addr.sin_addr = my_machine_addr;
                     95:        ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
                     96:        if (ctl_sockt <= 0)
                     97:                p_error("Bad socket");
                     98:        if (bind(ctl_sockt,
                     99:            (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
                    100:                p_error("Couldn't bind to control socket");
                    101:        length = sizeof(ctl_addr);
                    102:        if (getsockname(ctl_sockt,
                    103:            (struct sockaddr *)&ctl_addr, &length) == -1)
                    104:                p_error("Bad address for ctl socket");
                    105: }
                    106:
                    107: /* print_addr is a debug print routine */
                    108: print_addr(addr)
                    109:        struct sockaddr_in addr;
                    110: {
                    111:        int i;
                    112:
                    113:        printf("addr = %x, port = %o, family = %o zero = ",
                    114:                addr.sin_addr, addr.sin_port, addr.sin_family);
                    115:        for (i = 0; i<8;i++)
                    116:        printf("%o ", (int)addr.sin_zero[i]);
                    117:        putchar('\n');
                    118: }