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 ; 91 92 Database 93 : STRING 94 { 95 curdbt.name = yylval.str; 96 curdbt.srclist = NULL; 97 curdbt.srclistsize = 0; 98 } 99 ; 100 101 Srclist 102 : Item 103 | Srclist Item 104 ; 105 106 Item 107 : STRING 108 { 109 cursrc.flags = NS_SUCCESS; 110 _nsaddsrctomap($1); 111 } 112 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 113 { 114 _nsaddsrctomap($1); 115 } 116 ; 117 118 Criteria 119 : Criterion 120 | Criteria Criterion 121 ; 122 123 Criterion 124 : Status '=' Action 125 { 126 if ($3) /* if action == RETURN set RETURN bit */ 127 cursrc.flags |= $1; 128 else /* else unset it */ 129 cursrc.flags &= ~$1; 130 } 131 ; 132 133 Status 134 : SUCCESS { $$ = NS_SUCCESS; } 135 | UNAVAIL { $$ = NS_UNAVAIL; } 136 | NOTFOUND { $$ = NS_NOTFOUND; } 137 | TRYAGAIN { $$ = NS_TRYAGAIN; } 138 ; 139 140 Action 141 : RETURN { $$ = 1L; } 142 | CONTINUE { $$ = 0L; } 143 ; 144 145 %% 146 147 static void 148 _nsaddsrctomap(elem) 149 const char *elem; 150 { 151 int i, lineno; 152 extern int _nsyylineno; 153 extern char * _nsyytext; 154 155 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 156 if (curdbt.srclistsize > 0) { 157 if ((strcasecmp(elem, NSSRC_COMPAT) == 0) || 158 (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { 159 /* XXX: syslog the following */ 160 warnx("%s line %d: 'compat' used with other sources", 161 _PATH_NS_CONF, lineno); 162 return; 163 } 164 } 165 for (i = 0; i < curdbt.srclistsize; i++) { 166 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 167 /* XXX: syslog the following */ 168 warnx("%s line %d: duplicate source '%s'", 169 _PATH_NS_CONF, lineno, elem); 170 return; 171 } 172 } 173 cursrc.name = elem; 174 _nsdbtaddsrc(&curdbt, &cursrc); 175 } 176