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 static char *rcsid = 43 "$FreeBSD$"; 44 #endif /* LIBC_SCCS and not lint */ 45 46 #include <err.h> 47 #define _NS_PRIVATE 48 #include <nsswitch.h> 49 #include <stdio.h> 50 #include <string.h> 51 52 53 static void _nsaddsrctomap __P((const char *)); 54 55 static ns_dbt curdbt; 56 static ns_src cursrc; 57 %} 58 59 %union { 60 char *str; 61 int mapval; 62 } 63 64 %token NL 65 %token SUCCESS UNAVAIL NOTFOUND TRYAGAIN 66 %token RETURN CONTINUE 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 | Database ':' Srclist NL 87 { 88 _nsdbtput(&curdbt); 89 } 90 | error NL 91 { 92 yyerrok; 93 } 94 ; 95 96 Database 97 : STRING 98 { 99 curdbt.name = yylval.str; 100 curdbt.srclist = NULL; 101 curdbt.srclistsize = 0; 102 } 103 ; 104 105 Srclist 106 : Item 107 | Srclist Item 108 ; 109 110 Item 111 : STRING 112 { 113 cursrc.flags = NS_SUCCESS; 114 _nsaddsrctomap($1); 115 } 116 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 117 { 118 _nsaddsrctomap($1); 119 } 120 ; 121 122 Criteria 123 : Criterion 124 | Criteria Criterion 125 ; 126 127 Criterion 128 : Status '=' Action 129 { 130 if ($3) /* if action == RETURN set RETURN bit */ 131 cursrc.flags |= $1; 132 else /* else unset it */ 133 cursrc.flags &= ~$1; 134 } 135 ; 136 137 Status 138 : SUCCESS { $$ = NS_SUCCESS; } 139 | UNAVAIL { $$ = NS_UNAVAIL; } 140 | NOTFOUND { $$ = NS_NOTFOUND; } 141 | TRYAGAIN { $$ = NS_TRYAGAIN; } 142 ; 143 144 Action 145 : RETURN { $$ = 1L; } 146 | CONTINUE { $$ = 0L; } 147 ; 148 149 %% 150 151 static void 152 _nsaddsrctomap(elem) 153 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_COMPAT) == 0)) { 163 /* XXX: syslog the following */ 164 warnx("%s line %d: 'compat' used with other sources", 165 _PATH_NS_CONF, lineno); 166 return; 167 } 168 } 169 for (i = 0; i < curdbt.srclistsize; i++) { 170 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 171 /* XXX: syslog the following */ 172 warnx("%s line %d: duplicate source '%s'", 173 _PATH_NS_CONF, lineno, elem); 174 return; 175 } 176 } 177 cursrc.name = elem; 178 _nsdbtaddsrc(&curdbt, &cursrc); 179 } 180