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69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
"""
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Changehost plugin - automatically changes the hostname of matching users.
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"""
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# Import hacks to access utils and log.
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import sys
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import os
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sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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import string
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# ircmatch library from https://github.com/mammon-ircd/ircmatch
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# (pip install ircmatch)
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import ircmatch
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import utils
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import world
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from log import log
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# Characters allowed in a hostname.
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allowed_chars = string.ascii_letters + '-./:' + string.digits
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def handle_uid(irc, sender, command, args):
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"""
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Listener for new connections.
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"""
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changehost_conf = irc.conf.get("changehost")
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if not changehost_conf:
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log.warning("(%s) Missing 'changehost:' configuration block; "
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"Changehost will not function correctly!", irc.name)
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return
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elif irc.name not in changehost_conf.get('enabled_nets'):
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# We're not enabled on the network, break.
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return
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changehost_hosts = changehost_conf.get('hosts')
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if not changehost_hosts:
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log.warning("(%s) No hosts were defined in changehost::hosts; "
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"Changehost will not function correctly!", irc.name)
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return
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target = args['uid']
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target_host = utils.getHostmask(irc, target, realhost=True)
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for host_glob, host_template in changehost_hosts.items():
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if ircmatch.match(0, host_glob, target_host):
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# This uses template strings for simple substitution:
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# https://docs.python.org/3/library/string.html#template-strings
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template = string.Template(host_template)
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# Substitute using the fields provided the hook data. This means
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# that the following variables are available for substitution:
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# $uid, $ts, $nick, $realhost, $host, $ident, $ip
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new_host = template.substitute(args)
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# Replace characters that are not allowed in hosts with "-".
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for char in new_host:
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if char not in allowed_chars:
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new_host = new_host.replace(char, '-')
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irc.proto.updateClient(target, 'HOST', new_host)
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# Only operate on the first match.
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break
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utils.add_hook(handle_uid, 'UID')
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