Better hack: filterstr=None

Signed-off-by: Christian Heimes <cheimes@redhat.com>

Doc/reference/ldap.rst

@@ -1068,7 +1068,10 @@ and wait for and return with the server's result, or with
    or :py:meth:`search_ext_s()` (client-side search limit). If non-zero
    not more than *sizelimit* results are returned by the server.
 
+   .. versionchanged:: 3.0
 
+      ``filterstr=None`` is equal to ``filterstr='(objectClass=*)'``.
+
 
 .. py:method:: LDAPObject.start_tls_s() -> None
 

Lib/ldap/ldapobject.py

@@ -748,7 +748,7 @@ def result4(self,msgid=ldap.RES_ANY,all=1,timeout=None,add_ctrls=0,add_intermedi
         resp_data = self._bytesify_results(resp_data, with_ctrls=add_ctrls)
     return resp_type, resp_data, resp_msgid, decoded_resp_ctrls, resp_name, resp_value
 
-  def search_ext(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrsonly=0,serverctrls=None,clientctrls=None,timeout=-1,sizelimit=0):
+  def search_ext(self,base,scope,filterstr=None,attrlist=None,attrsonly=0,serverctrls=None,clientctrls=None,timeout=-1,sizelimit=0):
     """
     search(base, scope [,filterstr='(objectClass=*)' [,attrlist=None [,attrsonly=0]]]) -> int
     search_s(base, scope [,filterstr='(objectClass=*)' [,attrlist=None [,attrsonly=0]]])
@@ -793,17 +793,24 @@ def search_ext(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrson
         The amount of search results retrieved can be limited with the
         sizelimit parameter if non-zero.
     """
+
     if PY2:
         base = self._bytesify_input('base', base)
-        # workaround for default argument,
-        # see https://github.com/python-ldap/python-ldap/issues/147
-        if self.bytes_mode and filterstr == '(objectClass=*)':
-          filterstr = b'(objectClass=*)'
+        if filterstr is None:
+          # workaround for default argument,
+          # see https://github.com/python-ldap/python-ldap/issues/147
+          if self.bytes_mode:
+            filterstr = b'(objectClass=*)'
+          else:
+            filterstr = u'(objectClass=*)'
         else:
           filterstr = self._bytesify_input('filterstr', filterstr)
         if attrlist is not None:
             attrlist = tuple(self._bytesify_input('attrlist', a)
                              for a in attrlist)
+    else:
+      if filterstr is None:
+        filterstr = '(objectClass=*)'
     return self._ldap_call(
       self._l.search_ext,
       base,scope,filterstr,
@@ -813,17 +820,17 @@ def search_ext(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrson
       timeout,sizelimit,
     )
 
-  def search_ext_s(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrsonly=0,serverctrls=None,clientctrls=None,timeout=-1,sizelimit=0):
+  def search_ext_s(self,base,scope,filterstr=None,attrlist=None,attrsonly=0,serverctrls=None,clientctrls=None,timeout=-1,sizelimit=0):
     msgid = self.search_ext(base,scope,filterstr,attrlist,attrsonly,serverctrls,clientctrls,timeout,sizelimit)
     return self.result(msgid,all=1,timeout=timeout)[1]
 
-  def search(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrsonly=0):
+  def search(self,base,scope,filterstr=None,attrlist=None,attrsonly=0):
     return self.search_ext(base,scope,filterstr,attrlist,attrsonly,None,None)
 
-  def search_s(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrsonly=0):
+  def search_s(self,base,scope,filterstr=None,attrlist=None,attrsonly=0):
     return self.search_ext_s(base,scope,filterstr,attrlist,attrsonly,None,None,timeout=self.timeout)
 
-  def search_st(self,base,scope,filterstr='(objectClass=*)',attrlist=None,attrsonly=0,timeout=-1):
+  def search_st(self,base,scope,filterstr=None,attrlist=None,attrsonly=0,timeout=-1):
     return self.search_ext_s(base,scope,filterstr,attrlist,attrsonly,None,None,timeout)
 
   def start_tls_s(self):
@@ -910,7 +917,7 @@ def search_subschemasubentry_s(self,dn=None):
       dn = empty_dn
     try:
       r = self.search_s(
-        dn,ldap.SCOPE_BASE,'(objectClass=*)',[attrname]
+        dn,ldap.SCOPE_BASE,None,[attrname]
       )
     except (ldap.NO_SUCH_OBJECT,ldap.NO_SUCH_ATTRIBUTE,ldap.INSUFFICIENT_ACCESS):
       r = []
@@ -943,7 +950,7 @@ def read_s(self,dn,filterstr=None,attrlist=None,serverctrls=None,clientctrls=Non
     r = self.search_ext_s(
       dn,
       ldap.SCOPE_BASE,
-      filterstr or '(objectClass=*)',
+      filterstr,
       attrlist=attrlist,
       serverctrls=serverctrls,
       clientctrls=clientctrls,
@@ -977,7 +984,7 @@ def read_subschemasubentry_s(self,subschemasubentry_dn,attrs=None):
     else:
       return subschemasubentry
 
-  def find_unique_entry(self,base,scope=ldap.SCOPE_SUBTREE,filterstr='(objectClass=*)',attrlist=None,attrsonly=0,serverctrls=None,clientctrls=None,timeout=-1):
+  def find_unique_entry(self,base,scope=ldap.SCOPE_SUBTREE,filterstr=None,attrlist=None,attrsonly=0,serverctrls=None,clientctrls=None,timeout=-1):
     """
     Returns a unique entry, raises exception if not unique
     """
@@ -996,7 +1003,7 @@ def find_unique_entry(self,base,scope=ldap.SCOPE_SUBTREE,filterstr='(objectClass
       raise NO_UNIQUE_ENTRY('No or non-unique search result for %s' % (repr(filterstr)))
     return r[0]
 
-  def read_rootdse_s(self, filterstr='(objectClass=*)', attrlist=None):
+  def read_rootdse_s(self, filterstr=None, attrlist=None):
     """
     convenience wrapper around read_s() for reading rootDSE
     """