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/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2021 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENT:
* This work was initially developed by Pierangelo Masarati for
* inclusion in OpenLDAP Software.
*/
#include <portable.h>
#include <stdio.h>
#include "rewrite-int.h"
static int
parse_line(
char **argv,
int *argc,
int maxargs,
char *buf
)
{
char *p, *begin;
int in_quoted_field = 0, cnt = 0;
char quote = '\0';
for ( p = buf; isspace( (unsigned char) p[ 0 ] ); p++ );
if ( p[ 0 ] == '#' ) {
return 0;
}
for ( begin = p; p[ 0 ] != '\0'; p++ ) {
if ( p[ 0 ] == '\\' && p[ 1 ] != '\0' ) {
p++;
} else if ( p[ 0 ] == '\'' || p[ 0 ] == '\"') {
if ( in_quoted_field && p[ 0 ] == quote ) {
in_quoted_field = 1 - in_quoted_field;
quote = '\0';
p[ 0 ] = '\0';
argv[ cnt ] = begin;
if ( ++cnt == maxargs ) {
*argc = cnt;
return 1;
}
for ( p++; isspace( (unsigned char) p[ 0 ] ); p++ );
begin = p;
p--;
} else if ( !in_quoted_field ) {
if ( p != begin ) {
return -1;
}
begin++;
in_quoted_field = 1 - in_quoted_field;
quote = p[ 0 ];
}
} else if ( isspace( (unsigned char) p[ 0 ] ) && !in_quoted_field ) {
p[ 0 ] = '\0';
argv[ cnt ] = begin;
if ( ++cnt == maxargs ) {
*argc = cnt;
return 1;
}
for ( p++; isspace( (unsigned char) p[ 0 ] ); p++ );
begin = p;
p--;
}
}
*argc = cnt;
return 1;
}
int
rewrite_read(
FILE *fin,
struct rewrite_info *info
)
{
char buf[ 1024 ];
char *argv[11];
int argc, lineno;
/*
* Empty rule at the beginning of the context
*/
for ( lineno = 0; fgets( buf, sizeof( buf ), fin ); lineno++ ) {
switch ( parse_line( argv, &argc, sizeof( argv ) - 1, buf ) ) {
case -1:
return REWRITE_ERR;
case 0:
break;
case 1:
if ( strncasecmp( argv[ 0 ], "rewrite", 7 ) == 0 ) {
int rc;
rc = rewrite_parse( info, "file", lineno,
argc, argv );
if ( rc != REWRITE_SUCCESS ) {
return rc;
}
}
break;
}
}
return REWRITE_SUCCESS;
}
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