1 files changed, 70 insertions, 0 deletions

diff --git a/src/mailman_pgp/rules/signature.py b/src/mailman_pgp/rules/signature.py
new file mode 100644
index 0000000..28d05e4
--- /dev/null
+++ b/src/mailman_pgp/rules/signature.py
@@ -0,0 +1,70 @@
+# Copyright (C) 2017 Jan Jancar
+#
+# This file is a part of the Mailman PGP plugin.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# This program 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 General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""""""
+
+from mailman.core.i18n import _
+from mailman.interfaces.rules import IRule
+from public import public
+from zope.interface import implementer
+
+from mailman_pgp.database import query
+from mailman_pgp.model.list import EncryptedMailingList
+from mailman_pgp.pgp.wrapper import PGPWrapper
+
+
+@public
+@implementer(IRule)
+class Signature:
+    """"""
+
+    name = 'signature'
+
+    description = _(
+        """
+        """)
+
+    record = True
+
+    def _record_action(self, msgdata, action, sender, reason):
+        msgdata['moderation_action'] = action
+        msgdata['moderation_sender'] = sender
+        msgdata.setdefault('moderation_reasons', []).append(reason)
+
+    def check(self, mlist, msg, msgdata):
+        """See `IRule`."""
+        enc_list = query(EncryptedMailingList).filter_by(
+            list_id=mlist.list_id).first()
+        if enc_list is None:
+            raise ValueError('Encrypted mailing list not found.')
+        wrapped = PGPWrapper(msg)
+
+        if not wrapped.is_signed():
+            action = enc_list.unsigned_msg_action
+            if action is not None:
+                self._record_action(msgdata, action, msg.sender,
+                                    'The message is unsigned.')
+                return True
+
+        if wrapped.is_inline_signed():
+            action = enc_list.inline_pgp_action
+            if action is not None:
+                self._record_action(msgdata, action, msg.sender,
+                                    'Inline PGP is not allowed.')
+                return True
+
+        # TODO finish this
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