SDF COM Bridge

Bridge between SDF COM chatroom and Feishu-Lark messaging platform. Supports bi-directional message translation between English and Chinese, command execution, and real-time chat synchronization. Use when connecting to SDF Public Access UNIX System COM chat and relaying messages to Feishu or Lark.

SDF COM chatroom to Feishu bridge with real-time message sync and translation.

Architecture

• SSH Socket connects to SDF
• COM runs on remote
• Terminal Parser extracts messages
• Translator handles EN-ZH bidirectional translation
• Feishu Integration sends formatted messages

Components

1. SSH Connection (scripts/ssh_connection.py)

Reuses ControlMaster socket for connection.

python

from ssh_connection import SSHConnection

conn = SSHConnection(user="yupeng", host="sdf.org")
conn.connect("com -c")  # Start COM
conn.send("g anonradio\n")  # Enter room

2. COM Interaction (scripts/com_interaction.py)

COM command wrapper.

Command	Function	Description
w	get_users()	List users
l	list_rooms()	List rooms
g	join_room("name")	Join room
r/R	get_history(n)	View history
s	send_private(user, host, msg)	Private message
e	emote(action)	Emote action
q	quit()	Exit COM

3. Terminal Parser (scripts/terminal_parser.py)

Extracts chat messages from terminal output.

python

from terminal_parser import SimpleTextParser

parser = SimpleTextParser()
messages = parser.feed(raw_text)

4. Translator (scripts/translator.py)

English to Chinese translation.

python

from translator import LLMTranslator

translator = LLMTranslator()
zh = translator.quick_translate_en_to_zh("hello")

5. Feishu Bridge (scripts/feishu_bridge.py)

Parse Feishu commands.

Command	Format	Function
Send	com: message	Send to COM
Status	com:pwd	Check connection
Privmsg	s: user@host message	Private message

6. Main Bridge (scripts/main.py)

Complete runtime example.

python

from main import SDFComBridge

bridge = SDFComBridge(
    user="yupeng",
    host="sdf.org",
    target_room="anonradio"
)

bridge.start()
bridge.handle_feishu_message("com: hello")
bridge.stop()

Usage

Install dependencies:

bash

pip install -r requirements.txt

Run directly:

bash

python scripts/main.py

Test connection:

bash

python -c "from scripts.ssh_connection import SSHConnection; c = SSHConnection(); print(c._check_socket())"

Configuration

Edit main.py:

python

bridge = SDFComBridge(
    user="yupeng",
    host="sdf.org",
    target_room="anonradio"
)

Default Room

Auto-joins anonradio chatroom.

Message Flow

COM to Feishu:

• English messages auto-translated to Chinese

Feishu to COM:

• Messages prefixed with "com:" sent to COM

Notes

• Requires existing SSH ControlMaster socket
• Socket path: ~/.ssh/sockets/[e-mail]
• com command must be available on remote
• pyte requires correct terminal size (80x24 default)