1 %{ 2 /* $NetBSD: nsparser.y,v 1.3 1999/01/25 00:16:18 lukem Exp $ */ 3 4 /*- 5 * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Luke Mewburn. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 #if defined(LIBC_SCCS) && !defined(lint) 42 __RCSID("$NetBSD: nsparser.y,v 1.3 1999/01/25 00:16:18 lukem Exp $"); 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include <err.h> 46 #define _NS_PRIVATE 47 #include <nsswitch.h> 48 #include <stdio.h> 49 #include <string.h> 50 51 52 static void _nsaddsrctomap __P((const char *)); 53 54 static ns_dbt curdbt; 55 static ns_src cursrc; 56 %} 57 58 %union { 59 char *str; 60 int mapval; 61 } 62 63 %token NL 64 %token SUCCESS UNAVAIL NOTFOUND TRYAGAIN 65 %token RETURN CONTINUE 66 %token <str> STRING 67 68 %type <mapval> Status Action 69 70 %% 71 72 File 73 : /* empty */ 74 | Lines 75 ; 76 77 Lines 78 : Entry 79 | Lines Entry 80 ; 81 82 Entry 83 : NL 84 | Database ':' NL 85 | Database ':' Srclist NL 86 { 87 _nsdbtput(&curdbt); 88 } 89 ; 90 91 Database 92 : STRING 93 { 94 curdbt.name = yylval.str; 95 curdbt.srclist = NULL; 96 curdbt.srclistsize = 0; 97 } 98 ; 99 100 Srclist 101 : Item 102 | Srclist Item 103 ; 104 105 Item 106 : STRING 107 { 108 cursrc.flags = NS_SUCCESS; 109 _nsaddsrctomap($1); 110 } 111 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 112 { 113 _nsaddsrctomap($1); 114 } 115 ; 116 117 Criteria 118 : Criterion 119 | Criteria Criterion 120 ; 121 122 Criterion 123 : Status '=' Action 124 { 125 if ($3) /* if action == RETURN set RETURN bit */ 126 cursrc.flags |= $1; 127 else /* else unset it */ 128 cursrc.flags &= ~$1; 129 } 130 ; 131 132 Status 133 : SUCCESS { $$ = NS_SUCCESS; } 134 | UNAVAIL { $$ = NS_UNAVAIL; } 135 | NOTFOUND { $$ = NS_NOTFOUND; } 136 | TRYAGAIN { $$ = NS_TRYAGAIN; } 137 ; 138 139 Action 140 : RETURN { $$ = 1L; } 141 | CONTINUE { $$ = 0L; } 142 ; 143 144 %% 145 146 static void 147 _nsaddsrctomap(elem) 148 const char *elem; 149 { 150 int i, lineno; 151 extern int _nsyylineno; 152 extern char * _nsyytext; 153 154 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 155 if (curdbt.srclistsize > 0) { 156 if ((strcasecmp(elem, NSSRC_COMPAT) == 0) || 157 (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { 158 /* XXX: syslog the following */ 159 warnx("%s line %d: 'compat' used with other sources", 160 _PATH_NS_CONF, lineno); 161 return; 162 } 163 } 164 for (i = 0; i < curdbt.srclistsize; i++) { 165 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 166 /* XXX: syslog the following */ 167 warnx("%s line %d: duplicate source '%s'", 168 _PATH_NS_CONF, lineno, elem); 169 return; 170 } 171 } 172 cursrc.name = elem; 173 _nsdbtaddsrc(&curdbt, &cursrc); 174 } 175