r9438: Add initial files for ldb_map

(This used to be commit a66eeadecdcc5f67dd34c4ae82f5ae9191163499)

2 files changed, 58 insertions, 0 deletions

diff --git a/source4/lib/ldb/ldb_map/README b/source4/lib/ldb/ldb_map/README
new file mode 100644
index 0000000000..3c7e30a331
--- /dev/null
+++ b/source4/lib/ldb/ldb_map/README
@@ -0,0 +1,29 @@
+This directory contains a skeleton backend for ldb backends that allow 
+using an LDAP server while mapping the attributes in that schema to 
+another schema. This backend will never be used itself but instead have 
+other backends based on it (e.g. ldb_samba3 for a Samba3-LDAP-to-samdb 
+backend)
+
+Each backend that uses this skeleton has to specify an array of 
+struct objectclass_mapping's (see ldb_map.h).
+
+If no mappings are defined for an objectclass, it will be kept as is.
+
+Special mapping routine for dn's (calls rdn mapping routine)
+Special mapping routine for rdn's
+
+Keep cache of mapped dn's so we don't have to traverse the tree each time
+
+search
+	Simply uses search_bytree
+	
+search_bytree
+	Map all attributes in parse_tree	
+
+add
+modify
+	Map ldb_message to LDAPMod
+	
+rename
+delete
+	Simply map dn
diff --git a/source4/lib/ldb/ldb_map/ldb_map.h b/source4/lib/ldb/ldb_map/ldb_map.h
new file mode 100644
index 0000000000..6d6e47873c
--- /dev/null
+++ b/source4/lib/ldb/ldb_map/ldb_map.h
@@ -0,0 +1,29 @@
+struct objectclass_mapping {
+	char *local_name;
+	char *remote_name;
+
+	char *key; /* Name of attribute used in rdn */
+
+	/* For mapping attributes used in searches */
+	struct local_attribute_mapping {
+		char *local_name;
+
+		/* Attributes to request from the server for this attribute, 
+		 * needed by generate */
+		char *required_attributes[]; 
+
+		/* If not set, the value for the first element of 
+		 * required_attributes will simply be used here */
+		struct ldb_message_element *(*generate) (LDAPMessage *msg); 
+	} *local_attribute_mappings;
+
+	/* Generate LDAPMod for adds and modifies */
+	LDAPMod *(*generate_mod)(struct ldb_message *);
+}
+
+struct ldb_map_backend {
+	struct objectclass_mapping *objectclass_mappings;
+};
+
+const char *ldb_map_dn(const char *old);
+const char *ldb_map_rdn(const char *old);