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