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 __FBSDID("$FreeBSD$"); 42 43 #include "namespace.h" 44 #define _NS_PRIVATE 45 #include <nsswitch.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <syslog.h> 50 #include "un-namespace.h" 51 52 static void _nsaddsrctomap(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 ERRORTOKEN 67 %token <str> STRING 68 69 %type <mapval> Status Action 70 71 %% 72 73 File 74 : /* empty */ 75 | Lines 76 ; 77 78 Lines 79 : Entry 80 | Lines Entry 81 ; 82 83 Entry 84 : NL 85 | Database ':' NL 86 { 87 free((char*)curdbt.name); 88 } 89 | Database ':' Srclist NL 90 { 91 _nsdbtput(&curdbt); 92 } 93 | error NL 94 { 95 yyerrok; 96 } 97 ; 98 99 Database 100 : STRING 101 { 102 curdbt.name = yylval.str; 103 curdbt.srclist = NULL; 104 curdbt.srclistsize = 0; 105 } 106 ; 107 108 Srclist 109 : Item 110 | Srclist Item 111 ; 112 113 Item 114 : STRING 115 { 116 cursrc.flags = NS_TERMINATE; 117 _nsaddsrctomap($1); 118 } 119 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 120 { 121 _nsaddsrctomap($1); 122 } 123 ; 124 125 Criteria 126 : Criterion 127 | Criteria Criterion 128 ; 129 130 Criterion 131 : Status '=' Action 132 { 133 if ($3) /* if action == RETURN set RETURN bit */ 134 cursrc.flags |= $1; 135 else /* else unset it */ 136 cursrc.flags &= ~$1; 137 } 138 ; 139 140 Status 141 : SUCCESS { $$ = NS_SUCCESS; } 142 | UNAVAIL { $$ = NS_UNAVAIL; } 143 | NOTFOUND { $$ = NS_NOTFOUND; } 144 | TRYAGAIN { $$ = NS_TRYAGAIN; } 145 ; 146 147 Action 148 : RETURN { $$ = NS_ACTION_RETURN; } 149 | CONTINUE { $$ = NS_ACTION_CONTINUE; } 150 ; 151 152 %% 153 154 static void 155 _nsaddsrctomap(elem) 156 const char *elem; 157 { 158 int i, lineno; 159 extern int _nsyylineno; 160 extern char * _nsyytext; 161 162 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 163 if (curdbt.srclistsize > 0) { 164 if (((strcasecmp(elem, NSSRC_COMPAT) == 0) && 165 (strcasecmp(curdbt.srclist[0].name, NSSRC_CACHE) != 0)) || 166 (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { 167 syslog(LOG_ERR, 168 "NSSWITCH(nsparser): %s line %d: 'compat' used with sources, other than 'cache'", 169 _PATH_NS_CONF, lineno); 170 free((void*)elem); 171 return; 172 } 173 } 174 for (i = 0; i < curdbt.srclistsize; i++) { 175 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 176 syslog(LOG_ERR, 177 "NSSWITCH(nsparser): %s line %d: duplicate source '%s'", 178 _PATH_NS_CONF, lineno, elem); 179 free((void*)elem); 180 return; 181 } 182 } 183 cursrc.name = elem; 184 _nsdbtaddsrc(&curdbt, &cursrc); 185 } 186