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changehost: only send a host change if new host != original

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This commit is contained in:
James Lu 2019-04-09 19:01:35 -07:00
parent 9056799633
commit 13be40e08b
1 changed files with 10 additions and 11 deletions
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21
plugins/changehost.py
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@ -41,6 +41,13 @@ def _changehost(irc, target, args):
return
args = args.copy()
# $host is explicitly forbidden by default because it can cause recursive
# loops when IP or real host masks are used to match a target. vHost
# updates do not affect these fields, so any further host application will
# cause the vHost to grow rapidly in size.
# That said, it is possible to get away with this expansion if you're
# careful enough, and that's why this hidden option exists.
if not changehost_conf.get('force_host_expansion'):
del args['host']
@ -57,16 +64,6 @@ def _changehost(irc, target, args):
# Substitute using the fields provided the hook data. This means
# that the following variables are available for substitution:
# $uid, $ts, $nick, $realhost, $ident, and $ip.
# $host is explicitly forbidden by default because it can cause
# recursive loops when IP or real host masks are used to match a
# target. vHost updates do not affect these fields, so any further
# execution of 'applyhosts' will cause $host to expand again to
# the user's new host, causing the vHost to grow rapidly in size.
# That said, it is possible to get away with this expansion if
# you're careful with what you're doing, and that is why this
# hidden option exists. -GLolol
try:
new_host = template.substitute(args)
except KeyError as e:
@ -78,7 +75,9 @@ def _changehost(irc, target, args):
if char not in allowed_chars:
new_host = new_host.replace(char, '-')
irc.update_client(target, 'HOST', new_host)
# Only send a host change if something has changed
if new_host != irc.users[target].host:
irc.update_client(target, 'HOST', new_host)
# Only operate on the first match.
break