stanza: add a Handshake class and use it in componentxmpp

slixmpp/componentxmpp.py

@@ -10,6 +10,7 @@ import logging
 import hashlib
 
 from slixmpp.basexmpp import BaseXMPP
+from slixmpp.stanza import Handshake
 from slixmpp.xmlstream import XMLStream
 from slixmpp.xmlstream import ET
 from slixmpp.xmlstream.matcher import MatchXPath
@@ -123,9 +124,10 @@ class ComponentXMPP(BaseXMPP):
         sid = xml.get('id', '')
         pre_hash = bytes('%s%s' % (sid, self.secret), 'utf-8')
 
-        handshake = ET.Element('{jabber:component:accept}handshake')
-        handshake.text = hashlib.sha1(pre_hash).hexdigest().lower()
-        self.send_xml(handshake)
+        handshake = Handshake()
+        handshake['value'] = hashlib.sha1(pre_hash).hexdigest().lower()
+
+        self.send(handshake)
 
     def _handle_handshake(self, xml):
         """The handshake has been accepted.

slixmpp/stanza/__init__.py

@@ -1,4 +1,3 @@
-
 # Slixmpp: The Slick XMPP Library
 # Copyright (C) 2010  Nathanael C. Fritz
 # This file is part of Slixmpp.
@@ -10,3 +9,9 @@ from slixmpp.stanza.message import Message
 from slixmpp.stanza.presence import Presence
 from slixmpp.stanza.stream_features import StreamFeatures
 from slixmpp.stanza.stream_error import StreamError
+from slixmpp.stanza.handshake import Handshake
+
+__all__ = [
+    'Error', 'Iq', 'Message', 'Presence', 'StreamFeatures', 'StreamError',
+    'Handshake'
+]

slixmpp/stanza/handshake.py

@@ -0,0 +1,25 @@
+# Slixmpp: The Slick XMPP Library
+# Copyright (C) 2021 Mathieu Pasquet
+# This file is part of Slixmpp.
+# See the file LICENSE for copying permission.
+
+from slixmpp.xmlstream import StanzaBase
+
+
+class Handshake(StanzaBase):
+
+    """
+    Jabber Component protocol handshake
+    """
+    namespace = 'jabber:component:accept'
+    name = 'handshake'
+    interfaces = {'value'}
+
+    def set_value(self, value: str):
+        self.xml.text = value
+
+    def get_value(self) -> str:
+        return self.xml.text
+
+    def del_value(self):
+        self.xml.text = ''