fix gecos field ordering to be backward compatible

[unix-history] / usr / src / usr.bin / talk / ctl_transact.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)ctl_transact.c      5.4 (Berkeley) %G%";
#endif /* not lint */

#include "talk_ctl.h"
#include <sys/time.h>

#define CTL_WAIT 2      /* time to wait for a response, in seconds */

/*
* SOCKDGRAM is unreliable, so we must repeat messages if we have
* not recieved an acknowledgement within a reasonable amount
* of time
*/
ctl_transact(target, msg, type, rp)
       struct in_addr target;
       CTL_MSG msg;
       int type;
       CTL_RESPONSE *rp;
{
       int read_mask, ctl_mask, nready, cc;
       struct timeval wait;

       msg.type = type;
       daemon_addr.sin_addr = target;
       daemon_addr.sin_port = daemon_port;
       ctl_mask = 1 << ctl_sockt;

       /*
        * Keep sending the message until a response of
        * the proper type is obtained.
        */
       do {
               wait.tv_sec = CTL_WAIT;
               wait.tv_usec = 0;
               /* resend message until a response is obtained */
               do {
                       cc = sendto(ctl_sockt, (char *)&msg, sizeof (msg), 0,
                               &daemon_addr, sizeof (daemon_addr));
                       if (cc != sizeof (msg)) {
                               if (errno == EINTR)
                                       continue;
                               p_error("Error on write to talk daemon");
                       }
                       read_mask = ctl_mask;
                       nready = select(32, &read_mask, 0, 0, &wait);
                       if (nready < 0) {
                               if (errno == EINTR)
                                       continue;
                               p_error("Error waiting for daemon response");
                       }
               } while (nready == 0);
               /*
                * Keep reading while there are queued messages 
                * (this is not necessary, it just saves extra
                * request/acknowledgements being sent)
                */
               do {
                       cc = recv(ctl_sockt, (char *)rp, sizeof (*rp), 0);
                       if (cc < 0) {
                               if (errno == EINTR)
                                       continue;
                               p_error("Error on read from talk daemon");
                       }
                       read_mask = ctl_mask;
                       /* an immediate poll */
                       timerclear(&wait);
                       nready = select(32, &read_mask, 0, 0, &wait);
               } while (nready > 0 && (rp->vers != TALK_VERSION ||
                   rp->type != type));
       } while (rp->vers != TALK_VERSION || rp->type != type);
       rp->id_num = ntohl(rp->id_num);
       rp->addr.sa_family = ntohs(rp->addr.sa_family);
}