/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved. The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#include "tip.h"

char *uucplock;
static  sigjmp_buf deadline;
static  int deadfl;

void
dead(void)
{

        deadfl = 1;
        siglongjmp(deadline, 1);
}

int
hunt(char *name)
{
        char *cp;
        sig_handler_t   f;

        f = signal(SIGALRM, (sig_handler_t)dead);
        while (cp = getremote(name)) {
                deadfl = 0;
                uucplock = cp;
                if (tip_mlock(uucplock) < 0) {
                        delock(uucplock);
                        continue;
                }
                /*
                 * Straight through call units, such as the BIZCOMP,
                 * VADIC and the DF, must indicate they're hardwired in
                 *  order to get an open file descriptor placed in FD.
                 * Otherwise, as for a DN-11, the open will have to
                 *  be done in the "open" routine.
                 */
                if (!HW)
                        break;
                if (sigsetjmp(deadline, 1) == 0) {
                        (void) alarm(10);
                        if (!trusted_device)
                                userperm();
                        errno = 0;
                        if ((FD = open(cp, O_RDWR)) < 0 && errno != EBUSY) {
                                (void) fprintf(stderr, "tip: ");
                                perror(cp);
                        }
                        if (!trusted_device)
                                myperm();
                        if (FD >= 0 && !isatty(FD)) {
                                (void) fprintf(stderr, "tip: %s: not a tty\n",
                                    cp);
                                (void) close(FD);
                                FD = -1;
                        }
                }
                (void) alarm(0);
                if (!deadfl && FD >= 0) {
                        struct termios t;

                        (void) ioctl(FD, TCGETS, &t);
                        t.c_cflag |= XCLUDE|HUPCL;
                        (void) ioctl(FD, TCSETSF, &t);
                        (void) signal(SIGALRM, f);
                        return ((int)cp);
                }
                delock(uucplock);
        }
        (void) signal(SIGALRM, f);
        return (deadfl ? -1 : (int)cp);
}