Kantek

Kantek is a userbot written in Python using Telethon.

A word of warning

Kantek is mostly built to help with the Administration of chats and is the main source for SpamWat.ch. Because of that it checks every message your account receives for blacklisted items, this includes strings, domains, top level domains, files, images and telegram entities. This means that for every message your account receives Kantek might make multiple http requests an resolve multiple telegram entities. The latter might lead to large (6+ hours) Floodwaits from Telegram.

If you want to use Kantek without the administration part, simply remove the plugins/autobahn folder to disable these features.

Requirements

Python 3.8+ is required to run the bot. ArangoDB 3.5+ or Postgres is used to store data.

Setup

• Copy the example config file to config.json Read either the ArangoDB section or the PostgreSQL section depending on what you prefer ArangoDB might be deprecated in the future so using postgres is suggested.

PostgreSQL

• Set db_type to postgres in the config
• Create a database and a user in postgres
• kantek uses migrant for migrations. Follow the installation instructions here.
• Copy the example.Migrant.toml to Migrant.toml and fill out the details.
• Run migrant setup
• Run migrant apply --all

ArangoDB

• Set db_type to arango in the config
• Install the driver with pip install pyArango~=1.3.4
• Create a user and a Database in ArangoDB. Give the user full permissions to the Database. The config defaults to the user and database name to kantek can be changed with db_username and db_name respectively.

After setting up the database:

• Put the Authentication data into the config file.
• Run bot.py

Migrating from ArangoDB to Postgres

If you postgres runs on nonstandard values set pg_db_username, pg_db_name, pg_db_host, pg_db_port, pg_db_password Stop your bot and run migrate_to_postgres.py. This will move everything over. If you have removed blacklist items with the old database you now might see <retired item from legacy database> as items when querying for some indices. This is done to keep the new indices the same. These items are disabled and users won't be banned for it. Once the migration is done. Change your db_* to the new settings and restart the bot.

Config

api_id

Get it from http://my.telegram.org/

Required	Type	Default
Yes	int	-

api_hash

Get it from http://my.telegram.org/

Required	Type	Default
Yes	str	-

db_type

The database to use. Choices from arango or postgres

Required	Type	Default
No	str	arango

db_username

Required	Type	Default
No	str	kantek

db_name

Required	Type	Default
No	str	kantek

db_password

Required	Type	Default
Yes	str	-

db_host

The IP the Database runs on. For ArangoDB the http is automatically added

Required	Type	Default
No	str	127.0.0.1

db_port

Default depends on the DB type.

ArangoDB: 8529 Postgres: 5432

Required	Type	Default
No	int	See description

db_cluster_mode

Set this if you use your Database in a cluster

If using ArangoDB this will mean you blacklist indices will be very large

Required	Type	Default
No	bool	false

log_bot_token

Required	Type	Default
Yes	str	-

log_channel_id

Required	Type	Default
Yes	int	-

gban_group

Required	Type	Default
No	int	-

cmd_prefix

Provide single prefix or a list of prefixes These will be escaped automatically

Required	Type	Default
No	str	list

session_name

Required	Type	Default
No	str	kantek-session

spamwatch_host

Required	Type	Default
No	str	https://api.spamwat.ch

spamwatch_token

Required	Type	Default
No	str	-

debug_mode

Useful for local development. Disabled actually banning a user in groups and reporting messages when using gban.

Required	Type	Default
No	bool	False

source_url

Used in .kantek and .update

Required	Type	Default
No	str	src.kv2.dev