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 * 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