1 %{ 2 /* $NetBSD: nsparser.y,v 1.7 2000/12/20 20:50:46 christos 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 1.7 2000/12/20 20:50:46 christos 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 ; 102 103 Database 104 : STRING 105 { 106 curdbt.name = yylval.str; 107 curdbt.srclist = NULL; 108 curdbt.srclistsize = 0; 109 } 110 ; 111 112 Srclist 113 : Item 114 | Srclist Item 115 ; 116 117 Item 118 : STRING 119 { 120 cursrc.flags = NS_SUCCESS; 121 _nsaddsrctomap($1); 122 } 123 | STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']' 124 { 125 _nsaddsrctomap($1); 126 } 127 ; 128 129 Criteria 130 : Criterion 131 | Criteria Criterion 132 ; 133 134 Criterion 135 : Status '=' Action 136 { 137 if ($3) /* if action == RETURN set RETURN bit */ 138 cursrc.flags |= $1; 139 else /* else unset it */ 140 cursrc.flags &= ~$1; 141 } 142 ; 143 144 Status 145 : SUCCESS { $$ = NS_SUCCESS; } 146 | UNAVAIL { $$ = NS_UNAVAIL; } 147 | NOTFOUND { $$ = NS_NOTFOUND; } 148 | TRYAGAIN { $$ = NS_TRYAGAIN; } 149 ; 150 151 Action 152 : RETURN { $$ = 1L; } 153 | CONTINUE { $$ = 0L; } 154 ; 155 156 %% 157 158 static void 159 _nsaddsrctomap(elem) 160 const char *elem; 161 { 162 int i, lineno; 163 164 _DIAGASSERT(elem != NULL); 165 166 lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0); 167 if (curdbt.srclistsize > 0) { 168 if ((strcasecmp(elem, NSSRC_COMPAT) == 0) || 169 (strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) { 170 /* XXX: syslog the following */ 171 warnx("%s line %d: 'compat' used with other sources", 172 _PATH_NS_CONF, lineno); 173 return; 174 } 175 } 176 for (i = 0; i < curdbt.srclistsize; i++) { 177 if (strcasecmp(curdbt.srclist[i].name, elem) == 0) { 178 /* XXX: syslog the following */ 179 warnx("%s line %d: duplicate source '%s'", 180 _PATH_NS_CONF, lineno, elem); 181 return; 182 } 183 } 184 cursrc.name = elem; 185 if (_nsdbtaddsrc(&curdbt, &cursrc) == -1) { 186 /* XXX: syslog the following */ 187 warn("%s line %d: error adding '%s'", 188 _PATH_NS_CONF, lineno, elem); 189 } 190 } 191