/*
 * 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   */

/* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */

#include "stdio.h"
#include "string.h"
#include "errno.h"
#include "sys/types.h"
#include "stdlib.h"

#include "lp.h"
#include "form.h"

/*
 * getform() - EXTRACT FORM STRUCTURE FROM DISK FILE
 *
 * The FILE **align_fp doesn't need to be changed for scalability, because
 * it is always NULL when getform is called by lpsched.
 */
int
getform(char *name, FORM *formp, FALERT *alertp, FILE **align_fp)
{
        static long             lastdir         = -1;

        int fd;

        register char *         path;


        if (!name || !*name) {
                errno = EINVAL;
                return (-1);
        }

        /*
         * Getting ``all''? If so, jump into the directory
         * wherever we left off.
         */
        if (STREQU(NAME_ALL, name)) {
                if (!(name = next_dir(Lp_A_Forms, &lastdir)))
                        return (-1);
        } else
                lastdir = -1;


        /*
         * Get the form configuration information (?)
         */
        if (formp) {
                path = getformfile(name, DESCRIBE);
                if (!path)
                        return (-1);
                if ((fd = open_locked(path, "r", 0)) < 0) {
                        Free (path);
                        return (-1);
                }
                Free (path);

                if (rdform(name, formp, fd, 0, (int *)0) == -1) {
                        close(fd);
                        return (-1);
                }
                close(fd);
        }

        /*
         * Get the alert information (?)
         */
        if (alertp) {

                FALERT *                pa = getalert(Lp_A_Forms, name);


                /*
                 * Don't fail if we can't read it because of access
                 * permission UNLESS we're "root" or "lp"
                 */
                if (!pa) {

                        if (errno == ENOENT) {
                                alertp->shcmd = 0;
                                alertp->Q = alertp->W = -1;

                        } else if (errno == ENOTDIR) {
                                freeform (formp);
                                errno = ENOENT; /* form doesn't exist */
                                return (-1);

                        } else if (
                                errno != EACCES
                             || !getpid()                 /* we be root */
                             || STREQU(getname(), LPUSER) /* we be lp   */
                        ) {
                                freeform (formp);
                                return (-1);
                        }

                } else
                        *alertp = *pa;
        }

        /*
         * Get the alignment pattern (?)
         */
        if (align_fp) {
                path = getformfile(name, ALIGN_PTRN);
                if (!path) {
                        freeform (formp);
                        errno = ENOMEM;
                        return (-1);
                }
                if (
                        !(*align_fp = open_lpfile(path, "r", 0))
                     && errno != ENOENT
                ) {
                        Free (path);
                        freeform (formp);
                        return (-1);
                }
                Free (path);
        }

        return (0);
}