lib/printers/okprinter.c

	okprinter.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */


#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 1.19  */
/* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */

#include "stdio.h"
#include "sys/types.h"
#include "stdlib.h"
#include <unistd.h>

#include "lp.h"
#include "printers.h"

unsigned long       badprinter  = 0;

static int      okinterface ( char * , PRINTER * );

/**
 ** okprinter() - SEE IF PRINTER STRUCTURE IS SOUND
 **/

int
okprinter(char *name, PRINTER *prbufp, int isput)
{
    badprinter = 0;

    /*
     * A printer can't be remote and have device, interface,
     * fault recovery, or alerts.
     */
    if (
        prbufp->remote
         && (
            prbufp->device
             || prbufp->interface
             || (
                prbufp->fault_alert.shcmd
                 && !STREQU(NAME_NONE, prbufp->fault_alert.shcmd)
            )
#if defined(CAN_DO_MODULES)
# if    defined(FIXED)
/*
 * This needs some work...getprinter() initializes this to "default"
 */
             || (
                !emptylist(prbufp->modules)
                 && !STREQU(NAME_NONE, prbufp->modules[0])
            )
# endif
#endif
        )
    )
        badprinter |= BAD_REMOTE;

    /*
     * A local printer must have an interface program. This is
     * for historical purposes (it let's someone know where the
     * interface program came from) AND is used by "putprinter()"
     * to copy the interface program. We must be able to read it.
     */
    if (!prbufp->remote && isput && !okinterface(name, prbufp))
        badprinter |= BAD_INTERFACE;

    /*
     * A local printer must have device or dial info.
     */
    if (!prbufp->remote && !prbufp->device && !prbufp->dial_info)
        badprinter |= BAD_DEVDIAL;

    /*
     * Fault recovery must be one of three kinds
     * (or default).
     */
    if (
        prbufp->fault_rec
         && !STREQU(prbufp->fault_rec, NAME_CONTINUE)
         && !STREQU(prbufp->fault_rec, NAME_BEGINNING)
         && !STREQU(prbufp->fault_rec, NAME_WAIT)
    )
        badprinter |= BAD_FAULT;

    /*
     * Alert command can't be reserved word.
     */
    if (
            prbufp->fault_alert.shcmd
         && (
        STREQU(prbufp->fault_alert.shcmd, NAME_QUIET)
         || STREQU(prbufp->fault_alert.shcmd, NAME_LIST)
        )
    )
        badprinter |= BAD_ALERT;

    return ((badprinter & ~ignprinter)? 0 : 1);
}

/**
 ** okinterface() - CHECK THAT THE INTERFACE PROGRAM IS OKAY
 **/

static int
canread(char *path)
{
    return ((access(path, R_OK) < 0) ? 0 : 1);
}

static int
okinterface(char *name, PRINTER *prbufp)
{
    int         ret;

    register char       *path;


    if (prbufp->interface)
        ret = canread(prbufp->interface);

    else
        if (!(path = makepath(Lp_A_Interfaces, name, (char *)0)))
            ret = 0;
        else {
            ret = canread(path);
            Free (path);
        }

    return (ret);
}