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 * $FreeBSD: src/lib/libc/net/nsparser.y,v 1.6 2007/05/17 03:33:23 jon Exp $ 40 */ 41 42 #include "namespace.h" 43 #define _NS_PRIVATE 44 #include <nsswitch.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include <syslog.h> 48 #include "un-namespace.h" 49 50 static void _nsaddsrctomap(const char *); 51 52 static ns_dbt curdbt; 53 static ns_src cursrc; 54 %} 55 56 %union { 57 char *str; 58 int mapval; 59 } 60 61 %token NL 62 %token SUCCESS UNAVAIL NOTFOUND TRYAGAIN 63 %token RETURN CONTINUE 64 %token ERRORTOKEN 65 %token <str> STRING 66 67 %type <mapval> Status Action 68 69 %% 70 71 File 72 : /* empty */ 73 | Lines 74 ; 75 76 Lines 77 : Entry 78 | Lines Entry 79 ; 80 81 Entry 82 : NL 83 | Database ':' NL 84 { 85 free((char*)curdbt.name); 86 } 87 | Database ':' Srclist NL 88 { 89 _nsdbtput(&curdbt); 90 } 91 | error NL 92 { 93 yyerrok; 94 } 95 ; 96 97 Database 98 : STRING 99 { 100 curdbt.name = yylval.str; 101 curdbt.srclist = NULL; 102 curdbt.srclistsize = 0; 103 } 104 ; 105 106 Srclist 107 : Item 108 | Srclist Item 109 ; 110 111 Item 112 : STRING 113 { 114 cursrc.flags = NS_TERMINATE; 115 _nsaddsrctomap($1); 116 } 117 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 118 { 119 _nsaddsrctomap($1); 120 } 121 ; 122 123 Criteria 124 : Criterion 125 | Criteria Criterion 126 ; 127 128 Criterion 129 : Status '=' Action 130 { 131 if ($3) /* if action == RETURN set RETURN bit */ 132 cursrc.flags |= $1; 133 else /* else unset it */ 134 cursrc.flags &= ~$1; 135 } 136 ; 137 138 Status 139 : SUCCESS { $$ = NS_SUCCESS; } 140 | UNAVAIL { $$ = NS_UNAVAIL; } 141 | NOTFOUND { $$ = NS_NOTFOUND; } 142 | TRYAGAIN { $$ = NS_TRYAGAIN; } 143 ; 144 145 Action 146 : RETURN { $$ = NS_ACTION_RETURN; } 147 | CONTINUE { $$ = NS_ACTION_CONTINUE; } 148 ; 149 150 %% 151 152 static void 153 _nsaddsrctomap(const char *elem) 154 { 155 int i, lineno; 156 extern int _nsyylineno; 157 extern char * _nsyytext; 158 159 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 160 if (curdbt.srclistsize > 0) { 161 if (((strcasecmp(elem, NSSRC_COMPAT) == 0) && 162 (strcasecmp(curdbt.srclist[0].name, NSSRC_CACHE) != 0)) || 163 (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { 164 syslog(LOG_ERR, 165 "NSSWITCH(nsparser): %s line %d: 'compat' used with sources, other than 'cache'", 166 _PATH_NS_CONF, lineno); 167 free((void*)elem); 168 return; 169 } 170 } 171 for (i = 0; i < curdbt.srclistsize; i++) { 172 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 173 syslog(LOG_ERR, 174 "NSSWITCH(nsparser): %s line %d: duplicate source '%s'", 175 _PATH_NS_CONF, lineno, elem); 176 free((void*)elem); 177 return; 178 } 179 } 180 cursrc.name = elem; 181 _nsdbtaddsrc(&curdbt, &cursrc); 182 } 183