1 %{
2 /* $NetBSD: nslexer.l,v 1.13 2012/06/25 22:32:45 abs 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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 #if defined(LIBC_SCCS) && !defined(lint)
35 __RCSID("$NetBSD: nslexer.l,v 1.13 2012/06/25 22:32:45 abs Exp $");
36 #endif /* LIBC_SCCS and not lint */
37
38 #include "namespace.h"
39 #include <ctype.h>
40 #define _NS_PRIVATE
41 #include <nsswitch.h>
42 #include <string.h>
43 #include <syslog.h>
44
45 #include "nsparser.h"
46
47 %}
48
49 %option yylineno nounput noinput
50 %option never-interactive
51
52 BLANK [ \t]
53 CR \n
54 STRING [a-zA-Z][a-zA-Z0-9_]*
55
56 %%
57
58 {BLANK}+ ; /* skip whitespace */
59
60 #.* ; /* skip comments */
61
62 \\{CR} ; /* allow continuation */
63
64 {CR} return NL;
65
66 [sS][uU][cC][cC][eE][sS][sS] return SUCCESS;
67 [uU][nN][aA][vV][aA][iI][lL] return UNAVAIL;
68 [nN][oO][tT][fF][oO][uU][nN][dD] return NOTFOUND;
69 [tT][rR][yY][aA][gG][aA][iI][nN] return TRYAGAIN;
70
71 [rR][eE][tT][uU][rR][nN] return RETURN;
72 [cC][oO][nN][tT][iI][nN][uU][eE] return CONTINUE;
73
74 {STRING} {
75 char *p;
76 size_t i;
77
78 if ((p = strdup(yytext)) == NULL) {
79 syslog(LOG_ERR, "libc nsdispatch: %m");
80 return NL;
81 }
82
83 for (i = 0; i < strlen(p); i++) {
84 if (isupper((unsigned char)p[i]))
85 p[i] = tolower((unsigned char)p[i]);
86 }
87 _nsyylval.str = p;
88 return STRING;
89 }
90
91 . return yytext[0];
92
93 %%
94
95 #undef _nsyywrap
96 int
97 _nsyywrap(void)
98 {
99 return 1;
100 } /* _nsyywrap */
101
102 void
_nsyyerror(const char * msg)103 _nsyyerror(const char *msg)
104 {
105
106 syslog(LOG_WARNING, "libc nsdispatch: %s line %d: %s at '%s'",
107 _PATH_NS_CONF, yylineno, msg, yytext);
108 } /* _nsyyerror */
109