r435: a major upgrade for ldb

 - added the ability to mark record attributes as being CASE_INSENSITIVE, WILDCARD or INTEGER.

 - added the ability to support objectclass subclasses, and to search by a parent class

 - added internal support for case insensitive versus case sensitive
   indexing (not UTF8 compliant yet)

 - cleaned up a number of const warnings

 - added a number of helper functions for fetching integers, strings and doubles

 - added a in-memory cache for important database properties, supported by a
   database sequence number

 - changed some variable names to avoid conflicts with C++
(This used to be commit f2bf06f25c2e6c744817711c7bedbd1d3b52f994)

1 files changed, 87 insertions, 0 deletions

diff --git a/source4/lib/ldb/common/ldb_utf8.c b/source4/lib/ldb/common/ldb_utf8.c
new file mode 100644
index 0000000000..7767b0955e
--- /dev/null
+++ b/source4/lib/ldb/common/ldb_utf8.c
@@ -0,0 +1,87 @@
+/* 
+   ldb database library
+
+   Copyright (C) Andrew Tridgell  2004
+
+     ** NOTE! The following LGPL license applies to the ldb
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/*
+ *  Name: ldb
+ *
+ *  Component: ldb utf8 handling
+ *
+ *  Description: case folding and case comparison for UTF8 strings
+ *
+ *  Author: Andrew Tridgell
+ */
+
+#include "includes.h"
+
+/*
+  TODO:
+  a simple case folding function - will be replaced by a UTF8 aware function later
+*/
+char *ldb_casefold(const char *s)
+{
+	int i;
+	char *ret = strdup(s);
+	if (!s) {
+		errno = ENOMEM;
+		return NULL;
+	}
+	for (i=0;ret[i];i++) {
+		ret[i] = toupper(ret[i]);
+	}
+	return ret;
+}
+
+/*
+  a caseless compare, optimised for 7 bit
+  TODO: doesn't yet handle UTF8
+*/
+static int ldb_caseless_cmp(const char *s1, const char *s2)
+{
+	int i;
+	for (i=0;s1[i] != 0;i++) {
+		int c1 = toupper(s1[i]), c2 = toupper(s2[i]);
+		if (c1 != c2) {
+			return c1 - c2;
+		}
+	}
+	return s2[i];
+}
+
+/*
+  compare two basedn fields
+  return 0 for match
+*/
+int ldb_dn_cmp(const char *dn1, const char *dn2)
+{
+	return ldb_caseless_cmp(dn1, dn2);
+}
+
+/*
+  compare two attributes
+  return 0 for match
+*/
+int ldb_attr_cmp(const char *dn1, const char *dn2)
+{
+	return ldb_caseless_cmp(dn1, dn2);
+}