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|
%{
/* $NetBSD: nsparser.y,v 1.3 1999/01/25 00:16:18 lukem Exp $ */
/*-
* Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "namespace.h"
#define _NS_PRIVATE
#include <nsswitch.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include "un-namespace.h"
static void _nsaddsrctomap(const char *);
static ns_dbt curdbt;
static ns_src cursrc;
%}
%union {
char *str;
int mapval;
}
%token NL
%token SUCCESS UNAVAIL NOTFOUND TRYAGAIN
%token RETURN CONTINUE
%token ERRORTOKEN
%token <str> STRING
%type <mapval> Status Action
%%
File
: /* empty */
| Lines
;
Lines
: Entry
| Lines Entry
;
Entry
: NL
| Database ':' NL
{
free((char*)curdbt.name);
}
| Database ':' Srclist NL
{
_nsdbtput(&curdbt);
}
| error NL
{
yyerrok;
}
;
Database
: STRING
{
curdbt.name = yylval.str;
curdbt.srclist = NULL;
curdbt.srclistsize = 0;
}
;
Srclist
: Item
| Srclist Item
;
Item
: STRING
{
cursrc.flags = NS_TERMINATE;
_nsaddsrctomap($1);
}
| STRING '[' { cursrc.flags = NS_SUCCESS; } Criteria ']'
{
_nsaddsrctomap($1);
}
;
Criteria
: Criterion
| Criteria Criterion
;
Criterion
: Status '=' Action
{
if ($3) /* if action == RETURN set RETURN bit */
cursrc.flags |= $1;
else /* else unset it */
cursrc.flags &= ~$1;
}
;
Status
: SUCCESS { $$ = NS_SUCCESS; }
| UNAVAIL { $$ = NS_UNAVAIL; }
| NOTFOUND { $$ = NS_NOTFOUND; }
| TRYAGAIN { $$ = NS_TRYAGAIN; }
;
Action
: RETURN { $$ = NS_ACTION_RETURN; }
| CONTINUE { $$ = NS_ACTION_CONTINUE; }
;
%%
static void
_nsaddsrctomap(const char *elem)
{
int i, lineno;
extern int _nsyylineno;
extern char * _nsyytext;
lineno = _nsyylineno - (*_nsyytext == '\n' ? 1 : 0);
if (curdbt.srclistsize > 0) {
if (((strcasecmp(elem, NSSRC_COMPAT) == 0) &&
(strcasecmp(curdbt.srclist[0].name, NSSRC_CACHE) != 0)) ||
(strcasecmp(curdbt.srclist[0].name, NSSRC_COMPAT) == 0)) {
syslog(LOG_ERR,
"NSSWITCH(nsparser): %s line %d: 'compat' used with sources, other than 'cache'",
_PATH_NS_CONF, lineno);
free((void*)elem);
return;
}
}
for (i = 0; i < curdbt.srclistsize; i++) {
if (strcasecmp(curdbt.srclist[i].name, elem) == 0) {
syslog(LOG_ERR,
"NSSWITCH(nsparser): %s line %d: duplicate source '%s'",
_PATH_NS_CONF, lineno, elem);
free((void*)elem);
return;
}
}
cursrc.name = elem;
_nsdbtaddsrc(&curdbt, &cursrc);
}
|
