xref: /illumos-gate/usr/src/cmd/lp/lib/forms/getform.c (revision 2a8bcb4efb45d99ac41c94a75c396b362c414f7f)

/*
 * 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);
}