From 89dbc5a844930da4d769355ad105a0186c6448cf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philipp=20H=C3=B6rist?= <forenjunkie@chello.at>
Date: Sat, 30 Jun 2018 22:31:56 +0200
Subject: [PATCH] [omemo] Allow MUC conversations without other participants

Fixes #267
---
 omemo/omemo/state.py | 12 ++++--------
 omemo/omemoplugin.py |  3 ---
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/omemo/omemo/state.py b/omemo/omemo/state.py
index cf3391d..4086635 100644
--- a/omemo/omemo/state.py
+++ b/omemo/omemo/state.py
@@ -281,10 +281,6 @@ class OmemoState:
 
         devices_list = self.device_list_for(jid, True)
 
-        if len(devices_list) == 0:
-            log.error('No known devices')
-            return
-
         payload, tag = encrypt(key, iv, plaintext)
 
         key += tag
@@ -315,10 +311,6 @@ class OmemoState:
                     log.warning('Failed to find key for device ' +
                                 str(rid))
             encrypted_jids.append(jid_to)
-        if len(encrypted_keys) == 0:
-            log_msg = 'Encrypted keys empty'
-            log.error(log_msg)
-            raise NoValidSessions(log_msg)
 
         my_other_devices = set(self.own_devices) - set({self.own_device_id})
         # Encrypt the message key with for each of our own devices
@@ -336,6 +328,10 @@ class OmemoState:
                 log.exception('ERROR:')
                 log.warning('Failed to find key for device ' + str(dev))
 
+        if not encrypted_keys:
+            log.error('Encrypted keys empty')
+            raise NoValidSessions('Encrypted keys empty')
+
         result = {'sid': self.own_device_id,
                   'keys': encrypted_keys,
                   'jid': jid,
diff --git a/omemo/omemoplugin.py b/omemo/omemoplugin.py
index 3e569bd..cd59868 100644
--- a/omemo/omemoplugin.py
+++ b/omemo/omemoplugin.py
@@ -236,11 +236,8 @@ class OmemoPlugin(GajimPlugin):
         if isinstance(chat_control, GroupchatControl):
             room = chat_control.room_jid
             missing = True
-            own_jid = app.get_jid_from_account(account)
             for nick in con.groupchat[room]:
                 real_jid = con.groupchat[room][nick]
-                if real_jid == own_jid:
-                    continue
                 if not con.are_keys_missing(real_jid):
                     missing = False
             if missing: