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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:54:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:54:12 +0000 |
commit | b527294153be3b79563c82c66102adc0004736c0 (patch) | |
tree | 9b423a224848441885190b5ea7cf0feb23510c9d /libraries/librewrite/parse.c | |
parent | Initial commit. (diff) | |
download | openldap-b527294153be3b79563c82c66102adc0004736c0.tar.xz openldap-b527294153be3b79563c82c66102adc0004736c0.zip |
Adding upstream version 2.6.7+dfsg.upstream/2.6.7+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | libraries/librewrite/parse.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/libraries/librewrite/parse.c b/libraries/librewrite/parse.c new file mode 100644 index 0000000..0053a26 --- /dev/null +++ b/libraries/librewrite/parse.c @@ -0,0 +1,124 @@ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2000-2022 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; +} + |