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46d9306383
may be built into libc (`static NSS modules') or dynamically loaded via dlopen (`dynamic NSS modules'). Modules are loaded/initialized at configuration time (i.e. when nsdispatch is called and nsswitch.conf is read or re-read). = Make the nsdispatch(3) core thread-safe. = New status code for nsdispatch(3) `NS_RETURN', currently used to signal ERANGE-type issues. = syslog(3) problems, don't warn/err/abort. = Try harder to avoid namespace pollution. = Implement some shims to assist in porting NSS modules written for the GNU C Library nsswitch interface. Sponsored by: DARPA, Network Associates Laboratories
120 lines
3.4 KiB
Plaintext
120 lines
3.4 KiB
Plaintext
%{
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/* $NetBSD: nslexer.l,v 1.3 1999/01/25 00:16:17 lukem Exp $ */
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/*-
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* Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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static char *rcsid =
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"$FreeBSD$";
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <ctype.h>
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#define _NS_PRIVATE
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#include <nsswitch.h>
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#include <string.h>
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#include <syslog.h>
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#include "un-namespace.h"
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#include "nsparser.h"
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#define YY_NO_UNPUT
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%}
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%option yylineno
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BLANK [ \t]
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CR \n
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STRING [a-zA-Z][a-zA-Z0-9_]*
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%%
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{BLANK}+ ; /* skip whitespace */
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#.* ; /* skip comments */
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\\{CR} ; /* allow continuation */
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{CR} return NL;
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[sS][uU][cC][cC][eE][sS][sS] return SUCCESS;
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[uU][nN][aA][vV][aA][iI][lL] return UNAVAIL;
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[nN][oO][tT][fF][oO][uU][nN][dD] return NOTFOUND;
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[tT][rR][yY][aA][gG][aA][iI][nN] return TRYAGAIN;
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[rR][eE][tT][uU][rR][nN] return RETURN;
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[cC][oO][nN][tT][iI][nN][uU][eE] return CONTINUE;
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{STRING} {
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char *p;
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int i;
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if ((p = strdup(yytext)) == NULL) {
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syslog(LOG_ERR,
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"NSSWITCH(nslexer): memory allocation failure");
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return ERRORTOKEN;
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}
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for (i = 0; i < strlen(p); i++) {
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if (isupper((unsigned char)p[i]))
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p[i] = tolower((unsigned char)p[i]);
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}
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_nsyylval.str = p;
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return STRING;
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}
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. return yytext[0];
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%%
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#undef _nsyywrap
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int
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_nsyywrap()
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{
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return 1;
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} /* _nsyywrap */
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void
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_nsyyerror(msg)
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const char *msg;
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{
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syslog(LOG_ERR, "NSSWITCH(nslexer): %s line %d: %s at '%s'",
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_PATH_NS_CONF, yylineno, msg, yytext);
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} /* _nsyyerror */
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