gpo: Make the gpclass more easily extensible

Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

python/samba/gpclass.py

@@ -29,27 +29,51 @@ import codecs
 from samba import NTSTATUSError
 from ConfigParser import ConfigParser
 from StringIO import StringIO
+from abc import ABCMeta, abstractmethod
 
 class gp_ext(object):
+    __metaclass__ = ABCMeta
+
+    @abstractmethod
     def list(self, rootpath):
-        return None
+        pass
 
+    @abstractmethod
+    def parse(self, afile, ldb, conn, attr_log, lp):
+        pass
+
+    @abstractmethod
     def __str__(self):
-        return "default_gp_ext"
+        pass
 
 
-class inf_to_ldb(object):
-    '''This class takes the .inf file parameter (essentially a GPO file mapped to a GUID),
-    hashmaps it to the Samba parameter, which then uses an ldb object to update the
-    parameter to Samba4. Not registry oriented whatsoever.
-    '''
+class inf_to():
+    __metaclass__ = ABCMeta
 
-    def __init__(self, logger, ldb, dn, attribute, val):
+    def __init__(self, logger, ldb, dn, lp, attribute, val):
         self.logger = logger
         self.ldb = ldb
         self.dn = dn
         self.attribute = attribute
         self.val = val
+        self.lp = lp
+
+    def explicit(self):
+        return self.val
+
+    def update_samba(self):
+        (upd_sam, value) = self.mapper().get(self.attribute)
+        upd_sam(value())
+
+    @abstractmethod
+    def mapper(self):
+        pass
+
+class inf_to_ldb(inf_to):
+    '''This class takes the .inf file parameter (essentially a GPO file mapped to a GUID),
+    hashmaps it to the Samba parameter, which then uses an ldb object to update the
+    parameter to Samba4. Not registry oriented whatsoever.
+    '''
 
     def ch_minPwdAge(self, val):
         self.logger.info('KDC Minimum Password age was changed from %s to %s' % (self.ldb.get_minPwdAge(), val))
@@ -67,9 +91,6 @@ class inf_to_ldb(object):
         self.logger.info('KDC Password Properties were changed from %s to %s' % (self.ldb.get_pwdProperties(), val))
         self.ldb.set_pwdProperties(val)
 
-    def explicit(self):
-        return self.val
-
     def nttime2unix(self):
         seconds = 60
         minutes = 60
@@ -89,10 +110,6 @@ class inf_to_ldb(object):
 
                }
 
-    def update_samba(self):
-        (upd_sam, value) = self.mapper().get(self.attribute)
-        upd_sam(value())     # or val = value() then update(val)
-
 
 class gp_sec_ext(gp_ext):
     '''This class does the following two things:
@@ -156,11 +173,12 @@ class gp_sec_ext(gp_ext):
                     (att, setter) = current_section.get(key)
                     value = value.encode('ascii', 'ignore')
                     ret = True
-                    setter(self.logger, self.ldb, self.dn, att, value).update_samba()
+                    setter(self.logger, self.ldb, self.dn, self.lp, att, value).update_samba()
         return ret
 
-    def parse(self, afile, ldb, conn, attr_log):
+    def parse(self, afile, ldb, conn, attr_log, lp):
         self.ldb = ldb
+        self.lp = lp
         self.dn = ldb.get_default_basedn()
 
         # Fixing the bug where only some Linux Boxes capitalize MACHINE

source4/scripting/bin/samba_gpoupdate

@@ -49,7 +49,7 @@ def gp_path_list(path):
     return GPO_LIST
 
 
-def gpo_parser(GPO_LIST, ldb, conn, attr_log):
+def gpo_parser(GPO_LIST, ldb, conn, attr_log, lp):
     '''The API method to parse the GPO
     :param GPO_LIST:
     :param ldb: Live instance of an LDB object AKA Samba
@@ -62,9 +62,9 @@ def gpo_parser(GPO_LIST, ldb, conn, attr_log):
     for entry in GPO_LIST:
         (ext, thefile) = entry
         if ret == False:
-            ret = ext.parse(thefile, ldb, conn, attr_log)
+            ret = ext.parse(thefile, ldb, conn, attr_log, lp)
         else:
-            temp = ext.parse(thefile, ldb, conn, attr_log)
+            temp = ext.parse(thefile, ldb, conn, attr_log, lp)
     return ret
 
 
@@ -243,7 +243,7 @@ for guid_eval in hierarchy_gpos:
             if  (version != 0) and GPO_Changed == True:
                 logger.info('GPO %s has changed' % guid)
                 try:
-                    change_backlog = gpo_parser(gpolist, test_ldb, conn, attr_log)
+                    change_backlog = gpo_parser(gpolist, test_ldb, conn, attr_log, lp)
                 except:
                     logger.error('Failed to parse gpo %s' % guid)
                     continue