1 files changed, 90 insertions, 0 deletions
diff --git a/python/samba/gp/vgp_motd_ext.py b/python/samba/gp/vgp_motd_ext.py
new file mode 100644
index 0000000..845a5c4
--- /dev/null
+++ b/python/samba/gp/vgp_motd_ext.py
@@ -0,0 +1,90 @@
+# vgp_motd_ext samba gpo policy
+# Copyright (C) David Mulder <dmulder@suse.com> 2020
+#
+# 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/>.
+
+import os
+from samba.gp.gpclass import gp_xml_ext, gp_misc_applier
+
+class vgp_motd_ext(gp_xml_ext, gp_misc_applier):
+    def unapply(self, guid, motd, attribute, value):
+        if attribute != 'motd':
+            raise ValueError('"%s" is not a message attribute' % attribute)
+        msg = value
+        data = self.parse_value(value)
+        if os.path.exists(motd):
+            with open(motd, 'r') as f:
+                current = f.read()
+        else:
+            current = ''
+        # Only overwrite the msg if it hasn't been modified. It may have been
+        # modified by another GPO.
+        if 'new_val' not in data or current.strip() == data['new_val'].strip():
+            msg = data['old_val']
+            with open(motd, 'w') as w:
+                if msg:
+                    w.write(msg)
+                else:
+                    w.truncate()
+        self.cache_remove_attribute(guid, attribute)
+
+    def apply(self, guid, motd, text):
+        if os.path.exists(motd):
+            with open(motd, 'r') as f:
+                current = f.read()
+        else:
+            current = ''
+        if current != text.text:
+            with open(motd, 'w') as w:
+                w.write(text.text)
+            data = self.generate_value(old_val=current, new_val=text.text)
+            self.cache_add_attribute(guid, 'motd', data)
+
+    def __str__(self):
+        return 'Unix Settings/Message of the Day'
+
+    def process_group_policy(self, deleted_gpo_list, changed_gpo_list,
+                             motd='/etc/motd'):
+        for guid, settings in deleted_gpo_list:
+            if str(self) in settings:
+                for attribute, msg in settings[str(self)].items():
+                    self.unapply(guid, motd, attribute, msg)
+
+        for gpo in changed_gpo_list:
+            if gpo.file_sys_path:
+                xml = 'MACHINE/VGP/VTLA/Unix/MOTD/manifest.xml'
+                path = os.path.join(gpo.file_sys_path, xml)
+                xml_conf = self.parse(path)
+                if not xml_conf:
+                    continue
+                policy = xml_conf.find('policysetting')
+                data = policy.find('data')
+                text = data.find('text')
+                self.apply(gpo.name, motd, text)
+
+    def rsop(self, gpo):
+        output = {}
+        if gpo.file_sys_path:
+            xml = 'MACHINE/VGP/VTLA/Unix/MOTD/manifest.xml'
+            path = os.path.join(gpo.file_sys_path, xml)
+            xml_conf = self.parse(path)
+            if not xml_conf:
+                return output
+            policy = xml_conf.find('policysetting')
+            data = policy.find('data')
+            filename = data.find('filename')
+            text = data.find('text')
+            mfile = os.path.join('/etc', filename.text)
+            output[mfile] = text.text
+        return output