From 2d2719123dc05d1b5327f03acdd6f39e9465d294 Mon Sep 17 00:00:00 2001
From: Kurt Zeilenga <kurt@openldap.org>
Date: Tue, 24 Aug 1999 01:13:30 +0000
Subject: [PATCH] Rename filter entry's  strcpy_special() to strcpy_regex() to
 better reflect its purpose.  Modify switch to support REG_EXTENDED
 expressions. Use REG_EXTENDED instead of REG_BASIC everywhere. Modify
 <ac/regex.h> to support <gnuregex.h> for testing purposes. Requires: env
 CPPFLAGS="-DHAVE_GNUREGEX_H=1" LIBS=-lgnuregex ./configure

---
 include/ac/regex.h            |  4 ++++
 libraries/libldap/getfilter.c |  2 +-
 servers/slapd/filterentry.c   | 24 +++++++++++++++---------
 3 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/include/ac/regex.h b/include/ac/regex.h
index 99afaec3d8..30a3482359 100644
--- a/include/ac/regex.h
+++ b/include/ac/regex.h
@@ -25,6 +25,10 @@
 	For NT: http://people.delphi.com/gjc/hs_regex.html
 */
 #error "No POSIX REGEX available."
+
+#elif HAVE_GNUREGEX_H
+	/* system has GNU gnuregex.h */ 
+#	include <gnuregex.h>
 #else
 	/* have regex.h, assume it's POSIX compliant */
 #	include <regex.h>
diff --git a/libraries/libldap/getfilter.c b/libraries/libldap/getfilter.c
index b0a181a8ef..2c06810ab6 100644
--- a/libraries/libldap/getfilter.c
+++ b/libraries/libldap/getfilter.c
@@ -253,7 +253,7 @@ ldap_getfirstfilter(
 			continue;
 
 		/* compile flp->ifl_pattern, continue if we fail */
-		if (regcomp(&re, flp->lfl_pattern, 0) != 0)
+		if (regcomp(&re, flp->lfl_pattern, REG_EXTENDED) != 0)
 			continue;
 
 		/* match ifl_pattern and lfd_curval, continue if we fail */
diff --git a/servers/slapd/filterentry.c b/servers/slapd/filterentry.c
index dd6da92f64..f65c8472a8 100644
--- a/servers/slapd/filterentry.c
+++ b/servers/slapd/filterentry.c
@@ -283,18 +283,24 @@ test_filter_list(
 }
 
 static void
-strcpy_special( char *d, char *s )
+strcpy_regex( char *d, char *s )
 {
 	for ( ; *s; s++ ) {
 		switch ( *s ) {
+		case '^':
 		case '.':
-		case '\\':
 		case '[':
-		case ']':
+		case ']': /* ? */
+		case '$':
+		case '(':
+		case ')': /* ? */
+		case '|':
 		case '*':
 		case '+':
-		case '^':
-		case '$':
+		case '?':
+		case '{':
+		case '}': /* ? */
+		case '\\':
 			*d++ = '\\';
 			/* FALL */
 		default:
@@ -356,7 +362,7 @@ test_substring_filter(
 			    0, 0, 0 );
 			return( -1 );
 		}
-		strcpy_special( p, f->f_sub_initial );
+		strcpy_regex( p, f->f_sub_initial );
 		p = strchr( p, '\0' );
 	}
 	if ( f->f_sub_any != NULL ) {
@@ -369,7 +375,7 @@ test_substring_filter(
 			}
 			strcpy( p, ".*" );
 			p = strchr( p, '\0' );
-			strcpy_special( p, f->f_sub_any[i] );
+			strcpy_regex( p, f->f_sub_any[i] );
 			p = strchr( p, '\0' );
 		}
 	}
@@ -382,7 +388,7 @@ test_substring_filter(
 		}
 		strcpy( p, ".*" );
 		p = strchr( p, '\0' );
-		strcpy_special( p, f->f_sub_final );
+		strcpy_regex( p, f->f_sub_final );
 		p = strchr( p, '\0' );
 		strcpy( p, "$" );
 	}
@@ -390,7 +396,7 @@ test_substring_filter(
 	/* compile the regex */
 	Debug( LDAP_DEBUG_FILTER, "test_substring_filter: regcomp pat: %s\n",
 		pat, 0, 0 );
-	if ((rc = regcomp(&re, pat, 0))) {
+	if ((rc = regcomp(&re, pat, REG_EXTENDED))) {
 		char error[512];
 
 		regerror(rc, &re, error, sizeof(error));
-- 
2.39.5