add an experimental (currently partial) Python implementation of nslcd to see if we can get the same features with easier to maintain code

git-svn-id: http://arthurdejong.org/svn/nss-pam-ldapd/nss-pam-ldapd@1347 ef36b2f9-881f-0410-afb5-c4e39611909c

1 files changed, 74 insertions, 0 deletions

diff --git a/pynslcd/alias.py b/pynslcd/alias.py
new file mode 100644
index 0000000..5126466
--- /dev/null
+++ b/pynslcd/alias.py
@@ -0,0 +1,74 @@
+
+# alias.py - lookup functions for aliasnet addresses
+#
+# Copyright (C) 2010 Arthur de Jong
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
+
+import constants
+import common
+
+import ldap
+import ldap.filter
+
+
+class AliasRequest(common.Request):
+
+    filter = '(objectClass=nisMailAlias)'
+
+    attmap_cn         = 'cn'
+    attmap_rfc822MailMember = 'rfc822MailMember'
+
+    attributes = ( 'cn', 'rfc822MailMember' )
+
+    def write(self, entry):
+        dn, attributes = entry
+        # get name and check against requested name
+        names = attributes.get(self.attmap_cn, [])
+        if not names:
+            logging.error('Error: entry %s does not contain %s value', dn, self.attmap_cn)
+            return
+        if self.name:
+            if self.name.lower() not in (x.lower() for x in names):
+                return
+            names = ( self.name, )
+        # get the members of the alias
+        members = attributes.get(self.attmap_rfc822MailMember, [])
+        if not members:
+            logging.error('Error: entry %s does not contain %s value', dn, self.attmap_rfc822MailMember)
+            return
+        # write results
+        for name in names:
+            self.fp.write_int32(constants.NSLCD_RESULT_BEGIN)
+            self.fp.write_string(name)
+            self.fp.write_stringlist(members)
+
+
+class AliasByNameRequest(AliasRequest):
+
+    action = constants.NSLCD_ACTION_ALIAS_BYNAME
+
+    def read_parameters(self):
+        self.name = self.fp.read_string()
+
+    def mk_filter(self):
+        return '(&%s(%s=%s))' % ( self.filter,
+                  self.attmap_cn, ldap.filter.escape_filter_chars(self.name) )
+
+
+class AliasAllRequest(AliasRequest):
+
+    action = constants.NSLCD_ACTION_ALIAS_ALL