Add User.get_fields(), and rework plugins to fix $nick broken expansions

User.nick is no longer a writable attribute since a085aed924, so it won't show up in __dict__ now.

get_fields() replaces the User.__dict__ hack various plugins used and also provides some new expansion variables:
- $sid and $server expand to the server ID and name respectively
- $modes and $channels are now preformatted strings
- $netname expands to the network name

$manipulatable and $_irc were removed since their values aren't quite meaningful as strings

classes.py

@@ -116,6 +116,37 @@ class User():
         # Update the new nick.
         self._irc.users.bynick.setdefault(self.lower_nick, []).append(self.uid)
 
+    def get_fields(self):
+        """
+        Returns all template/substitution-friendly fields for the User object in a read-only dictionary.
+        """
+        fields = self.__dict__.copy()
+
+        # These don't really make sense in text substitutions
+        for field in ('manipulatable', '_irc'):
+            del fields[field]
+
+        # Pre-format the channels list. FIXME: maybe this should be configurable somehow?
+        fields['channels'] = ','.join(sorted(self.channels))
+
+        # Swap SID and server name for convenience
+        fields['sid'] = self.server
+        try:
+            fields['server'] = self._irc.get_friendly_name(self.server)
+        except KeyError:
+            pass  # Keep it as is (i.e. as the SID) if grabbing the server name fails
+
+        # Network name
+        fields['netname'] = self._irc.name
+
+        # Join umodes together
+        fields['modes'] = self._irc.join_modes(self.modes)
+
+        # Add the nick attribute; this isn't in __dict__ because it's a property
+        fields['nick'] = self._nick
+
+        return fields
+
     def __repr__(self):
         return 'User(%s/%s)' % (self.uid, self.nick)
 IrcUser = User

plugins/changehost.py

@@ -114,9 +114,9 @@ def handle_chghost(irc, sender, command, args):
                               irc.name, target, ex)
                     return
 
-            userdata = irc.users.get(target)
-            if userdata:
-                _changehost(irc, target, userdata.__dict__)
+            userobj = irc.users.get(target)
+            if userobj:
+                _changehost(irc, target, userobj.get_fields())
 
 utils.add_hook(handle_chghost, 'CHGHOST')
 

protocols/clientbot.py

@@ -647,7 +647,11 @@ class ClientbotWrapperProtocol(IRCCommonProtocol):
         for line in self.serverdata.get("autoperform", []):
             # Expand substitutions like $nick, $ident, $host
             tmpl = string.Template(line)
-            line = tmpl.safe_substitute(**self.pseudoclient.__dict__)
+
+            args = self.pseudoclient.get_fields()
+
+            log.debug('(%s) handle_376: bot user fields are %s', self.name, args)
+            line = tmpl.safe_substitute(**args)
             self.send(line)
 
         # Virtual endburst hook.