Moving NSCP Directory Server from DirectoryBranch to TRUNK, initial drop. (foxworth)ldapserver7x

1 files changed, 56 insertions, 0 deletions

diff --git a/ldap/servers/slapd/subentry.c b/ldap/servers/slapd/subentry.c
new file mode 100644
index 00000000..b178115c
--- /dev/null
+++ b/ldap/servers/slapd/subentry.c
@@ -0,0 +1,56 @@
+/** BEGIN COPYRIGHT BLOCK
+ * Copyright 2001 Sun Microsystems, Inc.
+ * Portions copyright 1999, 2001-2003 Netscape Communications Corporation.
+ * All rights reserved.
+ * END COPYRIGHT BLOCK **/
+
+/*  Code to implement subentries
+*/
+
+/* This is the plan for subentries :
+
+	For updates, they're like regular entries.
+  
+	For searches, we need to do special stuff:
+	We need to examine the search filter. 
+	If it contains a branch of the form "objectclass=ldapsubentry",
+	then we don't need to do anything special.
+	If it does not, we need to do special stuff:
+		We need to and a filter clause "!objectclass=ldapsubentry" 
+		to the filter. 
+		The intention is that no entries having objectclass "ldapsubentry"
+		should be returned to the client.
+
+	Now, I feel confident that this will all work, but it poses some
+	performance problems. Looking for the filter branch could be
+	inefficient. Adding an extra filter test to every operation
+	is likely to slow the very operations we care about most.
+
+	Need to think about the best way to optimize this, perhaps using an IDL cache.
+
+ */
+
+#include "slap.h"
+
+/* Function intended to be called only from inside get_filter, so look for subentry search filters */
+int subentry_check_filter(Slapi_Filter *f)
+{
+	if ( 0 == strcasecmp ( f->f_avvalue.bv_val, "ldapsubentry")) {
+		/* Need to remember this so we avoid rewriting the filter later */
+		return 1; /* Clear the re-write flag, since we've seen the subentry filter element */
+	}
+	return 0; /* Set the rewrite flag */
+}
+
+/* Function which wraps a filter with (AND !(objectclass=ldapsubentry)) */
+void subentry_create_filter(Slapi_Filter** filter)
+{
+	Slapi_Filter *sub_filter = NULL;
+	Slapi_Filter *new_filter = NULL;
+    char *buf = slapi_ch_strdup("(!(objectclass=ldapsubentry))");
+    sub_filter = slapi_str2filter( buf );
+    new_filter = slapi_filter_join( LDAP_FILTER_AND, *filter, sub_filter );
+	*filter = new_filter;
+	slapi_ch_free((void **)&buf);
+}
+