xref: /titanic_44/usr/src/cmd/lp/lib/printers/getpentry.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28*7c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
29*7c478bd9Sstevel@tonic-gate 
30*7c478bd9Sstevel@tonic-gate 
31*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
32*7c478bd9Sstevel@tonic-gate /* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
33*7c478bd9Sstevel@tonic-gate 
34*7c478bd9Sstevel@tonic-gate #include "stdio.h"
35*7c478bd9Sstevel@tonic-gate #include "string.h"
36*7c478bd9Sstevel@tonic-gate #include "errno.h"
37*7c478bd9Sstevel@tonic-gate #include "sys/types.h"
38*7c478bd9Sstevel@tonic-gate #include "stdlib.h"
39*7c478bd9Sstevel@tonic-gate 
40*7c478bd9Sstevel@tonic-gate #include "lp.h"
41*7c478bd9Sstevel@tonic-gate #include "printers.h"
42*7c478bd9Sstevel@tonic-gate 
43*7c478bd9Sstevel@tonic-gate extern struct {
44*7c478bd9Sstevel@tonic-gate 	char			*v;
45*7c478bd9Sstevel@tonic-gate 	short			len,
46*7c478bd9Sstevel@tonic-gate 				okremote;
47*7c478bd9Sstevel@tonic-gate }			prtrheadings[];
48*7c478bd9Sstevel@tonic-gate 
49*7c478bd9Sstevel@tonic-gate /*
50*7c478bd9Sstevel@tonic-gate  * getpentry() - EXTRACT ONE PRINTER ENTRY FROM DISK FILE
51*7c478bd9Sstevel@tonic-gate  */
52*7c478bd9Sstevel@tonic-gate 
53*7c478bd9Sstevel@tonic-gate char *
getpentry(char * name,int want_fld)54*7c478bd9Sstevel@tonic-gate getpentry(char *name, int want_fld)
55*7c478bd9Sstevel@tonic-gate {
56*7c478bd9Sstevel@tonic-gate 	static long		lastdir		= -1;
57*7c478bd9Sstevel@tonic-gate 	char			buf[BUFSIZ];
58*7c478bd9Sstevel@tonic-gate 	int			fld;
59*7c478bd9Sstevel@tonic-gate 	int fd;
60*7c478bd9Sstevel@tonic-gate 	register char *		p;
61*7c478bd9Sstevel@tonic-gate 	register char *		path;
62*7c478bd9Sstevel@tonic-gate 	int			isNameAll;
63*7c478bd9Sstevel@tonic-gate 	char * option_entry = NULL;
64*7c478bd9Sstevel@tonic-gate 
65*7c478bd9Sstevel@tonic-gate 
66*7c478bd9Sstevel@tonic-gate 
67*7c478bd9Sstevel@tonic-gate 	if (!name || !*name) {
68*7c478bd9Sstevel@tonic-gate 		errno = EINVAL;
69*7c478bd9Sstevel@tonic-gate 		return (0);
70*7c478bd9Sstevel@tonic-gate 	}
71*7c478bd9Sstevel@tonic-gate 
72*7c478bd9Sstevel@tonic-gate 	/*
73*7c478bd9Sstevel@tonic-gate 	 * Getting ``all''? If so, jump into the directory
74*7c478bd9Sstevel@tonic-gate 	 * wherever we left off.
75*7c478bd9Sstevel@tonic-gate 	 */
76*7c478bd9Sstevel@tonic-gate 	isNameAll = STREQU(NAME_ALL, name);
77*7c478bd9Sstevel@tonic-gate 	for (; ; ) {
78*7c478bd9Sstevel@tonic-gate 		/*
79*7c478bd9Sstevel@tonic-gate 		 * fix for bug 1117241
80*7c478bd9Sstevel@tonic-gate 		 * occasionally when a printer is removed, a printer directory
81*7c478bd9Sstevel@tonic-gate 		 * is left behind, but the CONFIGFILE is removed.  In this
82*7c478bd9Sstevel@tonic-gate 		 * case this directory terminates the search for additional
83*7c478bd9Sstevel@tonic-gate 		 * printers as we have been returning 0 in this case.
84*7c478bd9Sstevel@tonic-gate 		 * Now, we loop back and try the next directory until
85*7c478bd9Sstevel@tonic-gate 		 * we have no more directories or we find a directory with
86*7c478bd9Sstevel@tonic-gate 		 * a CONFIGFILE
87*7c478bd9Sstevel@tonic-gate 		 */
88*7c478bd9Sstevel@tonic-gate 		if (isNameAll) {
89*7c478bd9Sstevel@tonic-gate 			if (!(name = next_dir(Lp_A_Printers, &lastdir)))
90*7c478bd9Sstevel@tonic-gate 				return (0);
91*7c478bd9Sstevel@tonic-gate 		} else
92*7c478bd9Sstevel@tonic-gate 			lastdir = -1;
93*7c478bd9Sstevel@tonic-gate 
94*7c478bd9Sstevel@tonic-gate 		/*
95*7c478bd9Sstevel@tonic-gate 		 * Get the printer configuration information.
96*7c478bd9Sstevel@tonic-gate 		 */
97*7c478bd9Sstevel@tonic-gate 
98*7c478bd9Sstevel@tonic-gate 		path = getprinterfile(name, CONFIGFILE);
99*7c478bd9Sstevel@tonic-gate 		if (!path) {
100*7c478bd9Sstevel@tonic-gate 			if (isNameAll)
101*7c478bd9Sstevel@tonic-gate 				Free(name);
102*7c478bd9Sstevel@tonic-gate 			return (0);
103*7c478bd9Sstevel@tonic-gate 		}
104*7c478bd9Sstevel@tonic-gate 
105*7c478bd9Sstevel@tonic-gate 		if ((fd = open_locked(path, "r", 0)) < 0) {
106*7c478bd9Sstevel@tonic-gate 			Free(path);
107*7c478bd9Sstevel@tonic-gate 
108*7c478bd9Sstevel@tonic-gate 			/*
109*7c478bd9Sstevel@tonic-gate 			 * go around to loop again for
110*7c478bd9Sstevel@tonic-gate 			 * NAME_ALL case
111*7c478bd9Sstevel@tonic-gate 			 */
112*7c478bd9Sstevel@tonic-gate 
113*7c478bd9Sstevel@tonic-gate 			if (!isNameAll) /* fix for bug 1117241 */
114*7c478bd9Sstevel@tonic-gate 				return (0);
115*7c478bd9Sstevel@tonic-gate 			else
116*7c478bd9Sstevel@tonic-gate 				Free(name);
117*7c478bd9Sstevel@tonic-gate 		}
118*7c478bd9Sstevel@tonic-gate 		else
119*7c478bd9Sstevel@tonic-gate 			break;
120*7c478bd9Sstevel@tonic-gate 	}
121*7c478bd9Sstevel@tonic-gate 	Free(path);
122*7c478bd9Sstevel@tonic-gate 
123*7c478bd9Sstevel@tonic-gate 	/*
124*7c478bd9Sstevel@tonic-gate 	 * Read the file.
125*7c478bd9Sstevel@tonic-gate 	 */
126*7c478bd9Sstevel@tonic-gate 	errno = 0;
127*7c478bd9Sstevel@tonic-gate 	while (fdgets(buf, BUFSIZ, fd) != NULL) {
128*7c478bd9Sstevel@tonic-gate 
129*7c478bd9Sstevel@tonic-gate 		buf[strlen(buf) - 1] = 0;
130*7c478bd9Sstevel@tonic-gate 
131*7c478bd9Sstevel@tonic-gate 		for (fld = 0; fld < PR_MAX; fld++)
132*7c478bd9Sstevel@tonic-gate 			if (prtrheadings[fld].v &&
133*7c478bd9Sstevel@tonic-gate 				prtrheadings[fld].len &&
134*7c478bd9Sstevel@tonic-gate 				STRNEQU(
135*7c478bd9Sstevel@tonic-gate 					buf,
136*7c478bd9Sstevel@tonic-gate 					prtrheadings[fld].v,
137*7c478bd9Sstevel@tonic-gate 					prtrheadings[fld].len)) {
138*7c478bd9Sstevel@tonic-gate 
139*7c478bd9Sstevel@tonic-gate 				p = buf + prtrheadings[fld].len;
140*7c478bd9Sstevel@tonic-gate 				while (*p && *p == ' ')
141*7c478bd9Sstevel@tonic-gate 					p++;
142*7c478bd9Sstevel@tonic-gate 				break;
143*7c478bd9Sstevel@tonic-gate 			}
144*7c478bd9Sstevel@tonic-gate 
145*7c478bd9Sstevel@tonic-gate 		/*
146*7c478bd9Sstevel@tonic-gate 		 * To allow future extensions to not impact applications
147*7c478bd9Sstevel@tonic-gate 		 * using old versions of this routine, ignore strange
148*7c478bd9Sstevel@tonic-gate 		 * fields.
149*7c478bd9Sstevel@tonic-gate 		 */
150*7c478bd9Sstevel@tonic-gate 		if (fld >= PR_MAX)
151*7c478bd9Sstevel@tonic-gate 			continue;
152*7c478bd9Sstevel@tonic-gate 
153*7c478bd9Sstevel@tonic-gate 		if (fld == want_fld) {
154*7c478bd9Sstevel@tonic-gate 			if ((option_entry = strdup(p)) == NULL) {
155*7c478bd9Sstevel@tonic-gate 				return (0);
156*7c478bd9Sstevel@tonic-gate 			}
157*7c478bd9Sstevel@tonic-gate 		}
158*7c478bd9Sstevel@tonic-gate 
159*7c478bd9Sstevel@tonic-gate 
160*7c478bd9Sstevel@tonic-gate 	}
161*7c478bd9Sstevel@tonic-gate 	if (errno != 0) {
162*7c478bd9Sstevel@tonic-gate 		int save_errno = errno;
163*7c478bd9Sstevel@tonic-gate 		close(fd);
164*7c478bd9Sstevel@tonic-gate 		errno = save_errno;
165*7c478bd9Sstevel@tonic-gate 		return (0);
166*7c478bd9Sstevel@tonic-gate 	}
167*7c478bd9Sstevel@tonic-gate 	close(fd);
168*7c478bd9Sstevel@tonic-gate 
169*7c478bd9Sstevel@tonic-gate 	return (option_entry);
170*7c478bd9Sstevel@tonic-gate }
171