match_host: implicitly convert string masks such as "user1" to "$pylinkacc:user1"

This keeps it in line with other services packages and is way nicer to read.

classes.py

@@ -1016,6 +1016,17 @@ class PyLinkNetworkCoreWithUtils(PyLinkNetworkCore):
 
             # Prepare a list of hosts to check against.
             if target in self.users:
+
+                if not utils.isHostmask(glob):
+                    for specialchar in '$:()':
+                        # XXX: we should probably add proper rules on what's a valid account name
+                        if specialchar in glob:
+                            break
+                    else:
+                        # Implicitly convert matches for *sane* account names to "$pylinkacc:accountname".
+                        log.debug('(%s) Using target $pylinkacc:%s instead of raw string %r', self.name, glob, glob)
+                        glob = '$pylinkacc:' + glob
+
                 if glob.startswith('$'):
                     # Exttargets start with $. Skip regular ban matching and find the matching ban handler.
                     glob = glob.lstrip('$')

example-conf.yml

@@ -101,7 +101,7 @@ permissions:
 
     # Replace ABC123 with your PyLink account name (configured above)
     # in order to give yourself admin access.
-    "$pylinkacc:ABC123":
+    "ABC123":
         - "*"
 
 servers: