winbindd: Add support for name aliasing.

* Add support user and group name aliasing by expanding
  the ws_name_replace() and ws_name_return() functions.
  The lookup path is
     aliases -> qualified name -> SID
     SID -> fully qualified name -> alias
  In other words, the name aliasing support is a thin layer
  built on top of SID/NAME translation.

* Rename the ws_name_XX() functions to normalize_name_map()
  and normalize_name_unmap().  Chaneg interface to return
  NTSTATUS rather than char *.

* Add associated cache validation functions.

1 files changed, 41 insertions, 0 deletions

diff --git a/source3/winbindd/nss_info.c b/source3/winbindd/nss_info.c
index daa3dd037d..0e8cb60257 100644
--- a/source3/winbindd/nss_info.c
+++ b/source3/winbindd/nss_info.c
@@ -281,6 +281,47 @@ static struct nss_domain_entry *find_nss_domain( const char *domain )
 /********************************************************************
  *******************************************************************/
 
+ NTSTATUS nss_map_to_alias( TALLOC_CTX *mem_ctx, const char *domain,
+			    const char *name, char **alias )
+{
+	struct nss_domain_entry *p;
+	struct nss_info_methods *m;
+
+	if ( (p = find_nss_domain( domain )) == NULL ) {
+		DEBUG(4,("nss_map_to_alias: Failed to find nss domain pointer for %s\n",
+			 domain ));
+		return NT_STATUS_NOT_FOUND;
+	}
+
+	m = p->backend->methods;
+
+	return m->map_to_alias( mem_ctx, domain, name, alias );
+}
+
+
+/********************************************************************
+ *******************************************************************/
+
+ NTSTATUS nss_map_from_alias( TALLOC_CTX *mem_ctx, const char *domain,
+			      const char *alias, char **name )
+{
+	struct nss_domain_entry *p;
+	struct nss_info_methods *m;
+
+	if ( (p = find_nss_domain( domain )) == NULL ) {
+		DEBUG(4,("nss_map_from_alias: Failed to find nss domain pointer for %s\n",
+			 domain ));
+		return NT_STATUS_NOT_FOUND;
+	}
+
+	m = p->backend->methods;
+
+	return m->map_from_alias( mem_ctx, domain, alias, name );
+}
+
+/********************************************************************
+ *******************************************************************/
+
  NTSTATUS nss_close( const char *parameters )
 {
 	struct nss_domain_entry *p = nss_domain_list;