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nslexer.l revision 1.10 
      1 %{
      2 /*	$NetBSD: nslexer.l,v 1.10 2010/12/08 02:05:39 joerg 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 1.10 2010/12/08 02:05:39 joerg 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 #define	YY_NO_INPUT
     48 
     49 %}
     50 
     51 %option yylineno nounput
     52 %option never-interactive
     53 
     54 BLANK		[ \t]
     55 CR		\n
     56 STRING		[a-zA-Z][a-zA-Z0-9_]*
     57 
     58 %%
     59 
     60 {BLANK}+	;			/* skip whitespace */
     61 
     62 #.*		;			/* skip comments */
     63 
     64 \\{CR}		;			/* allow continuation */
     65 
     66 {CR}		return NL;
     67 
     68 [sS][uU][cC][cC][eE][sS][sS]		return SUCCESS;
     69 [uU][nN][aA][vV][aA][iI][lL]		return UNAVAIL;
     70 [nN][oO][tT][fF][oO][uU][nN][dD]	return NOTFOUND;
     71 [tT][rR][yY][aA][gG][aA][iI][nN]	return TRYAGAIN;
     72 
     73 [rR][eE][tT][uU][rR][nN]		return RETURN;
     74 [cC][oO][nN][tT][iI][nN][uU][eE]	return CONTINUE;
     75 
     76 {STRING}	{
     77 			char *p;
     78 			size_t i;
     79 
     80 			if ((p = strdup(yytext)) == NULL) {
     81 				syslog(LOG_ERR, "libc nsdispatch: %m");
     82 				return NL;
     83 			}
     84 
     85 			for (i = 0; i < strlen(p); i++) {
     86 				if (isupper((unsigned char)p[i]))
     87 					p[i] = tolower((unsigned char)p[i]);
     88 			}
     89 			_nsyylval.str = p;
     90 			return STRING;
     91 		}
     92 
     93 .		return yytext[0];
     94 
     95 %%
     96 
     97 #undef _nsyywrap
     98 int
     99 _nsyywrap()
    100 {
    101 	return 1;
    102 } /* _nsyywrap */
    103 
    104 void
    105 _nsyyerror(msg)
    106 	const char *msg;
    107 {
    108 
    109 	 syslog(LOG_WARNING, "libc nsdispatch: %s line %d: %s at '%s'",
    110 	    _PATH_NS_CONF, yylineno, msg, yytext);
    111 } /* _nsyyerror */
    112