1 %{ 2 /* $NetBSD: nsparser.y,v 1.8 2002/03/19 00:04:09 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 1.8 2002/03/19 00:04:09 lukem Exp $"); 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include "namespace.h" 46 47 #include <assert.h> 48 #include <err.h> 49 #define _NS_PRIVATE 50 #include <nsswitch.h> 51 #include <stdio.h> 52 #include <string.h> 53 54 55 static void _nsaddsrctomap __P((const char *)); 56 57 static ns_dbt curdbt; 58 static ns_src cursrc; 59 60 extern char * _nsyytext; 61 extern int _nsyylineno; 62 %} 63 64 %union { 65 char *str; 66 int mapval; 67 } 68 69 %token NL 70 %token SUCCESS UNAVAIL NOTFOUND TRYAGAIN 71 %token RETURN CONTINUE 72 %token <str> STRING 73 74 %type <mapval> Status Action 75 76 %% 77 78 File 79 : /* empty */ 80 | Lines 81 ; 82 83 Lines 84 : Entry 85 | Lines Entry 86 ; 87 88 Entry 89 : NL 90 | Database ':' NL 91 | Database ':' Srclist NL 92 { 93 int lineno; 94 95 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 96 if (_nsdbtput(&curdbt) == -1) 97 /* XXX: syslog the following */ 98 warn("%s line %d: error adding entry", 99 _PATH_NS_CONF, lineno); 100 } 101 | error NL 102 { 103 yyerrok; 104 } 105 ; 106 107 Database 108 : STRING 109 { 110 curdbt.name = yylval.str; 111 curdbt.srclist = NULL; 112 curdbt.srclistsize = 0; 113 } 114 ; 115 116 Srclist 117 : Item 118 | Srclist Item 119 ; 120 121 Item 122 : STRING 123 { 124 cursrc.flags = NS_SUCCESS; 125 _nsaddsrctomap($1); 126 } 127 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 128 { 129 _nsaddsrctomap($1); 130 } 131 ; 132 133 Criteria 134 : Criterion 135 | Criteria Criterion 136 ; 137 138 Criterion 139 : Status '=' Action 140 { 141 if ($3) /* if action == RETURN set RETURN bit */ 142 cursrc.flags |= $1; 143 else /* else unset it */ 144 cursrc.flags &= ~$1; 145 } 146 ; 147 148 Status 149 : SUCCESS { $$ = NS_SUCCESS; } 150 | UNAVAIL { $$ = NS_UNAVAIL; } 151 | NOTFOUND { $$ = NS_NOTFOUND; } 152 | TRYAGAIN { $$ = NS_TRYAGAIN; } 153 ; 154 155 Action 156 : RETURN { $$ = 1L; } 157 | CONTINUE { $$ = 0L; } 158 ; 159 160 %% 161 162 static void 163 _nsaddsrctomap(elem) 164 const char *elem; 165 { 166 int i, lineno; 167 168 _DIAGASSERT(elem != NULL); 169 170 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 171 if (curdbt.srclistsize > 0) { 172 if ((strcasecmp(elem, NSSRC_COMPAT) == 0) || 173 (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { 174 /* XXX: syslog the following */ 175 warnx("%s line %d: 'compat' used with other sources", 176 _PATH_NS_CONF, lineno); 177 return; 178 } 179 } 180 for (i = 0; i < curdbt.srclistsize; i++) { 181 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 182 /* XXX: syslog the following */ 183 warnx("%s line %d: duplicate source '%s'", 184 _PATH_NS_CONF, lineno, elem); 185 return; 186 } 187 } 188 cursrc.name = elem; 189 if (_nsdbtaddsrc(&curdbt, &cursrc) == -1) { 190 /* XXX: syslog the following */ 191 warn("%s line %d: error adding '%s'", 192 _PATH_NS_CONF, lineno, elem); 193 } 194 } 195