Delete posix user when deleting plinth user.

actions/delete-user

@@ -0,0 +1,34 @@
+#!/bin/sh
+#
+# This file is part of Plinth.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# Must be run as root.
+
+username="$1"
+
+getent passwd "$username"
+if [ $? -ne 0 ]; then
+    echo "Failed: user not found"
+    exit
+fi
+
+userdel "$username"
+if [ $? -eq 0 ]; then
+    echo "Success: user deleted"
+else
+    echo "Failed: userdel error"
+fi

plinth/modules/users/__init__.py

@@ -19,9 +19,12 @@
 Plinth module to manage users
 """
 
+from django.db.models.signals import post_delete
+from django.contrib.auth.models import User
 from gettext import gettext as _
 
 from plinth import cfg
+from plinth import actions
 
 __all__ = ['init']
 
@@ -33,3 +36,14 @@ def init():
     menu = cfg.main_menu.get('system:index')
     menu.add_urlname(_('Users and Groups'), 'glyphicon-user', 'users:index',
                      15)
+
+    post_delete.connect(delete_posix_user)
+
+
+def delete_posix_user(sender, instance=None, **kwargs):
+    try:
+        instance
+    except User.DoesNotExist:
+        pass
+    else:
+        actions.superuser_run('delete-user', [instance.username])