changehost: implement enforce exceptions

example-conf.yml

@@ -417,6 +417,12 @@ changehost:
     #enforced_nets:
     #    - inspnet
 
+    # Sets the masks that Changehost enforcement should ignore: these can be users with certain
+    # hosts, exttargets, etc.
+    enforce_exceptions:
+        - "*!*@yournet/staff/*"
+        #- "$account"
+
     # This sets the hostmasks that Changehost should look for. Whenever someone
     # with a matching nick!user@host connects, their host will be set to the
     # text defined. The following substitutions are available here:

plugins/changehost.py

@@ -101,6 +101,13 @@ def handle_chghost(irc, sender, command, args):
         if irc.name in changehost_conf.get('enforced_nets', []):
             log.debug('(%s) Enforce for network is on, re-checking host for target %s/%s',
                       irc.name, target, irc.getFriendlyName(target))
+
+            for ex in changehost_conf.get("enforce_exceptions", []):
+                if irc.matchHost(ex, target):
+                    log.debug('(%s) Skipping host change for target %s; they are exempted by mask %s',
+                              irc.name, target, ex)
+                    return
+
             userdata = irc.users.get(target)
             if userdata:
                 _changehost(irc, target, userdata.__dict__)