New script oidentd.py: mini RFC 1413 ident server integrated into WeeChat

[TehPeGaSuS]

Script info

• Script name: oidentd.py
• Version: 1.0
• Requirements: oidentd configured with force forward <listen_ip> <listen_port> to hand queries off to this script
• Min WeeChat version: (none specific, uses hook_fd/hook_timer/hook_signal, available since early WeeChat 1.x)
• Script tags: irc, identd, network

Description

Spins up a small RFC 1413 ident server integrated directly into WeeChat's event loop via hook_fd(), instead of running a separate identd daemon that has no idea which local port belongs to which IRC server buffer.

oidentd is configured to forward ident queries for a given listen address/port to this script (force forward 127.0.0.1 1113 in /etc/oidentd.conf). The script answers each query with the irc.server.<name>.username of whichever server connection owns the queried local port.

It resolves the local port -> server mapping two ways:

• a proactively-built cache, populated by polling hdata right after irc_server_connecting fires (before the query normally arrives), avoiding the race where the ident query lands before WeeChat has updated hdata with the new socket
• a live hdata walk as a fallback/cache-populator

Includes /oidentd status|debug <server>|restart for inspecting the listener state and the lport cache.

Checklist (new script)

• Single commit, single file added
• Commit message: New script name.py: short description…
• No similar script already exists
• Name: max 32 chars, only lower case letters, digits and underscores
• Unique name, does not already exist in repository
• No shebang on the first line
• Comment in script with name/pseudo, e-mail and license using SPDX tags
• Only English in code/comments
• Pure WeeChat API used, no extra API
• Function hook_url, hook_process or hook_process_hashtable is used for any blocking call (N/A — all sockets are non-blocking and driven via hook_fd)
• For Python script: works with Python 3 (Python 2 support is optional)
• Score 100 / 100 displayed by weechat-script-lint