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README.md

bashbot

A Telegram bot written in bash.

Depends on tmux. Uses JSON.sh.

Written by Drew (@topkecleon), Daniil Gentili (@danogentili), and Kay M (@gnadelwartz).

Contributions by JuanPotato, BigNerd95, TiagoDanin, and iicc1.

Download from github

Released to the public domain wherever applicable. Elsewhere, consider it released under the WTFPLv2.

Install bashbot

  1. Go to the directory you want to install bashbot, e.g.

    • your $HOME directory (install and run with your user-ID)
    • /usr/local if you want to run as service

  2. Clone the repository:

git clone --recursive https://github.com/topkecleon/telegram-bot-bash
  1. Change to directory telegram-bot.bash, run ./bashbot.sh init and follow the instructions. At this stage you are asked for your Bots token given by botfather.

Getting started

(Create your first telegram bot)[doc/1_firstbot.md]
(Make your own Bot)[doc/2_usage.md]
	Managing your own Bot
	Recieve data
	Send Messages
(Advatage Features)[doc/3_advanced.md]
	Interactive Chats
	Background Jobs
	Inline queries
(Expert Use)[doc/4_expert.md]
	Handling UTF-8
	Run as other user or system service
	Scedule bashbot from Cron

Security Considerations

Running a Telegram Bot means you are conneted to the public, you never know whats send to your Bot.

Bash scripts in general are not designed to be bullet proof, so consider this Bot as a proof of concept. More concret examples of security problems is bash's 'quoting hell' and globbing. Implications of wrong quoting

Whenever you are processing input from outside your bot you should disable globbing (set -f) and carefully quote everthing.

To improve you scripts we recommend to lint them with shellcheck. This can be done online or you can install shellcheck locally. bashbot itself is also linted by shellcheck.

Run your Bot as a restricted user

Every file your bot can write is in danger to be overwritten/deleted, In case of bad handling of user input every file your Bot can read is in danger of being disclosed.

Never run your Bot as root, this is the most dangerous you can do! Usually the user 'nobody' has almost no rigths on Unix/Linux systems. See Expert use on how to run your Bot as an other user.

Secure your Bot installation

Everyone who can read your Bot files can extract your Bots data. Especially your Bot Token in token must be protected against other users. No one exept you should have write access to the Bot files. The Bot itself need write access to count and tmp-bot-bash only, all other files should be write protected.

Runing ./bashbot.sh init sets the Bot permissions to reasonable default values as a starting point.

Is this Bot insecure?

No - its not less (in)secure as any other Bot written in any other language. But you should know about the implications ...

That's it!

If you feel that there's something missing or if you found a bug, feel free to submit a pull request!

$$VERSION$$ v0.50-11-g4ce19b1