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otouto

The plugin-wielding, multipurpose Telegram bot.

Public Bot | Official Channel | Development Group

otouto is an independently-developed Telegram API bot written in Lua. Originally conceived as a CLI script in February of 2015, otouto has since been open-sourced and migrated to the API, and is being developed to this day.

The Manual
Setup
Plugins
Control plugins
administration.lua
Liberbot-related plugins
List of plugins
Style
Contributors

Setup

You must have Lua (5.2+), lua-socket, lua-sec, and lua-cjson installed. To upload files, you must have curl installed. To use fortune.lua, you must have fortune installed.

Before doing anything, open config.lua and set bot_api_key to the authentication token you received from the Botfather.

You may want to set: admin, your Telegram ID; time_offset, a positive or negative number, denoting the difference, in seconds, of your system clock to UTC; and lang, a lowercase, two-letter code representing your language. Some plugins are not enabled by default. If you wish to enable them, add them to the plugins table (before help.lua).

To start the bot, run ./launch.sh. To stop the bot, send "/halt" from your admin account, and then Ctrl+C out of the loop. If you terminate the bot manually, you risk data loss. If you do not wish the bot to restart automatically, run it with lua bot.lua.

Note that certain plugins, such as translate.lua and greetings.lua, will require privacy mode to be disabled. Additionally, some plugins may require or make use of various API keys:


Plugins

otouto uses a robust plugin system, similar to that of yagop's Telegram-Bot. The aim of the otouto project is to contain any desirable bot feature within one universal bot framework.

Most plugins are intended for public use, but a few are for other purposes, like those used alongside Liberbot, or for use by the bot's owner. See Development for a breakdown of the components of a plugin, or here for a list of plugins.

A plugin can have five components, and two of them are required:

Component Description Required?
action Main function. Expects msg table as an argument. Y
triggers Table of triggers for the plugin. Uses Lua patterns. Y
cron Optional function to be called every minute. N
command Basic command and syntax. Listed in the help text. N
doc Usage for the plugin. Returned by "/help $command". N

The on_msg_receive() function adds a few variables to the msg table for your convenience. These are self-explanatory: msg.from.id_str, msg.to.id_str, msg.chat.id_str, msg.text_lower, msg.from.name.

Return values from action() are optional, but they do effect the flow. If it returns a table, that table will become msg, and on_msg_receive will continue with that. If it returns true, it will continue with the current msg.

When an action or cron function fails, the exception is caught and passed to the handle_exception() utilty (in utilities.lua) and is either printed to the console or send to the chat/channel defined in log_chat in config.lua.

Interactions with the bot API are straightforward. Every binding function shares the name of the API method (eg sendMessage()). An additional function, sendReply(), accepts the msg table and a string as an argument, and sends the string as a reply to that message.

Several functions used in multiple plugins are defined in utilities.lua. Refer to that file for usage and documentation.


Control plugins

Some plugins are designed to be used by the bot's owner. Here are some examples, how they're used, and what they do.

Plugin Command Function
control.lua /reload Reloads all plugins and configuration.
control.lua /halt Shuts down the bot after saving the database.
blacklist.lua /blacklist Blocks people from using the bot.
shell.lua /run Executes shell commands on the host system.
luarun.lua /lua Executes Lua commands in the bot's environment.

administration.lua

The administration plugin enables self-hosted, single-realm group administration, supporting both normal groups and supergroups. This works by sending TCP commands to an instance of tg running on the owner's account.

To get started, run ./tg-install.sh. Note that this script is written for Ubuntu/Debian. If you're running Arch (the only acceptable alternative), you'll have to do it yourself. If that is the case, note that otouto uses the "test" branch of tg, and the AUR package telegram-cli-git will not be sufficient, as it does not have support for supergroups yet.

Once the installation is finished, enable administration.lua in your config file. You may have reason to change the default TCP port (4567); if that is the case, remember to change it in tg-launch.sh as well. Run ./tg-launch.sh in a separate screen/tmux window. You'll have to enter your phone number and go through the login process the first time. The script is set to restart tg after two seconds, so you'll need to Ctrl+C after exiting.

While tg is running, you may start/reload otouto with administration.lua enabled, and have access to a wide variety of administrative commands and automata. The administration "database" is stored in administration.json. To start using otouto to administrate a group (note that you must be the owner (or an administrator)), send /gadd to that group. For a list of commands, use /ahelp. Below I'll describe various functions now available to you.

Command Function Privilege Internal?
/groups Returns a list of administrated groups (except the unlisted). 1 N
/ahelp Returns a list of accessible administrative commands. 1 Y
/ops Returns a list of the moderators and governor of a group. 1 Y
/desc Returns detailed information for a group. 1 Y
/rules Returns the rules of a group. 1 Y
/motd Returns the message of the day of a group. 1 Y
/link Returns the link for a group. 1 Y
/kick Removes the target from the group. 2 Y
/(un)ban Bans the target from the group or vice-versa. 2 Y
/changerule Changes an individual group rule. 3 Y
/setrules Sets the rules for a group. 3 Y
/setmotd Sets the message of the day for a group. 3 Y
/setlink Sets the link for a group. 3 Y
/alist Returns a list of administrators. 3 Y
/flags Returns a list of flags and their states, or toggles one. 3 Y
/antiflood Configures antiflood (flag 5) settings. 3 Y
/(de)mod Promotes a user to a moderator or vice-versa. 3 Y
/(de)gov Promotes a user to the governor or vice-versa. 4 Y
/(un)hammer Bans a user globally and blacklists him or vice-versa. 4 N
/(de)admin Promotes a user to an administrator or vice-versa. 5 N
/gadd Adds a group to the administrative system. 5 N
/grem Removes a group from the administrative system. 5 Y
/glist Returns a list of all administrated groups and their governors. 5 N
/broadcast Broadcasts a message to all administrated groups. 5 N

Internal commands can only be run within an administrated group.

Description of Privileges

# Title Description Scope
0 Banned Cannot enter the group(s). Either
1 User Default rank. Local
2 Moderator Can kick/ban/unban users. Local
3 Governor Can set rules/motd/link, promote/demote moderators, modify flags. Local
4 Administrator Can globally ban/unban users, promote/demote governors. Global
5 Owner Can add/remove groups, broadcast, promote/demote administrators. Global

Obviously, each greater rank inherits the privileges of the lower, positive ranks.

Flags

# Name Description
1 unlisted Removes a group from the /groups listing.
2 antisquig Automatically removes users for posting Arabic script or RTL characters.
3 antisquig++ Automatically removes users whose names contain Arabic script or RTL characters.
4 antibot Prevents bots from being added by non-moderators.
5 antiflood Prevents flooding by rate-limiting messages per user.

antiflood

antiflood (flag 5) provides a system of automatic flood protection by removing users who post too much. It is entirely configurable by a group's governor, an administrator, or the bot owner. For each message to a particular group, a user is awarded a certain number of "points". The number of points is different for each message type. When the user reaches 100 points, he is removed. Points are reset each minute. In this way, if a user posts twenty messages within one minute, he is removed.

Default antiflood values:

Type Points
text 5
contact 5
audio 5
voice 5
photo 10
document 10
location 10
video 10
sticker 20

Liberbot-related plugins

Note: This section may be out of date. The Liberbot-related plugins have not changed in very long time. Some plugins are only useful when the bot is used in a Liberbot group, like floodcontrol.lua and moderation.lua.

floodcontrol.lua makes the bot compliant with Liberbot's floodcontrol function. When the bot has posted too many messages to a single group in a given period of time, Liberbot will send it a message telling it to cease posting in that group. Here is an example floodcontrol command: /floodcontrol {"groupid":987654321,"duration":600} The bot will accept these commands from both Liberbot and the configured administrator.

moderation.lua allows the owner to use the bot to moderate a Liberbot realm, or set of groups. This works by adding the bot to the realm's admin group and making it an administrator. You must configure the plugin in the "moderation" section of config.lua, in the following way:

moderation = {
    admins = {
        ['123456789'] = 'Adam',
        ['246813579'] = 'Eve'
    },
    admin_group = -987654321,
    realm_name = 'My Realm'
}

Where Adam and Eve are realm administrators, and their IDs are set as their keys in the form of strings. admin_group is the group ID of the admin group, as a negative number. realm_name is the name of your Libebot realm.

Once this is set up, put your bot in the admin group and run /modadd and /modhelp to get started.


List of plugins

Plugin Command Function Aliases
help.lua /help [command] Returns a list of commands or command-specific help. /h
about.lua /about Returns the about text as configured in config.lua.
ping.lua /ping The simplest plugin ever!
echo.lua /echo text Repeats a string of text.
gSearch.lua /google query Returns Google web results. /g
gImages.lua /images query Returns a Google image result. /i
gMaps.lua /location query Returns location data from Google Maps. /loc
youtube.lua /youtube query Returns the top video result from YouTube. /yt
wikipedia.lua /wikipedia query Returns the summary of a Wikipedia article. /w
lastfm.lua /np [username] Returns the song you are currently listening to.
lastfm.lua /fmset [username] Sets your username for /np. /fmset -- will delete it.
hackernews.lua /hackernews Returns the latest posts from Hacker News. /hn
imdb.lua /imdb query Returns film information from IMDb.
hearthstone.lua /hearthstone query Returns data for Hearthstone cards matching the query. /hs
calc.lua /calc expression Returns conversions and solutions to math expressions.
bible.lua /bible reference Returns a Bible verse. /b
urbandictionary.lua /urban query Returns the top definition from Urban Dictionary. /ud
time.lua /time query Returns the time, date, and a timezone for a location.
weather.lua /weather query Returns current weather conditions for a given location.
nick.lua /nick nickname Set your nickname. /nick - will delete it.
whoami.lua /whoami Returns user and chat info for you or the replied-to user. /who
eightball.lua /8ball Returns an answer from a magic 8-ball.
dice.lua /roll nDr Returns RNG dice rolls. Uses D&D notation.
reddit.lua /reddit [r/subreddit ¦ query] Returns the top results from a subreddit, query, or r/all. /r
xkcd.lua /xkcd [query] Returns an xkcd strip and its alt text.
slap.lua /slap target Gives someone a slap (or worse).
commit.lua /commit Returns a commit message from whatthecommit.com.
fortune.lua /fortune Returns a UNIX fortune.
pun.lua /pun Returns a pun.
pokedex.lua /pokedex query Returns a Pokedex entry. /dex
currency.lua /cash [amount] cur to cur Converts one currency to another.
cats.lua /cat Returns a cat picture.
reactions.lua /reactions Returns a list of emoticons which can be posted by the bot.
apod.lua /apod [date] Returns the NASA Astronomy Picture of the Day.
dilbert.lua /dilbert [date] Returns a Dilbert strip.
patterns.lua /s/from/to/ Search-and-replace using Lua patterns.
me.lua /me Returns user-specific data stored by the bot.

Style

Bot output from every plugin should follow a consistent style. This style is easily observed interacting with the bot. Titles should be either bold (along with their colons) or a link (with plaintext colons) to the content's source. Names should be italic. Numbered lists should use bold numbers followed by a bold period followed by a space. Unnumbered lists should use the • bullet point followed by a space. Descriptions and information should be in plaintext, although "flavor" text should be italic. Technical information should be monospace. Links should be named.

Contributors

Everybody is free to contribute to otouto. If you are interested, you are invited to fork the repo and start making pull requests. If you have an idea and you are not sure how to implement it, open an issue or bring it up in the Bot Development group.

The creator and maintainer of otouto is topkecleon. He can be contacted via Telegram, Twitter, or email.

There are a a few ways to contribute if you are not a programmer. For one, your feedback is always appreciated. Drop me a line on Telegram or on Twitter. Secondly, we are always looking for new ideas for plugins. Most new plugins start with community input. Feel free to suggest them on Github or in the Bot Dev group. You can also donate Bitcoin to the following address: 1BxegZJ73hPu218UrtiY8druC7LwLr82gS

Contributions are appreciated in any form. Monetary contributions will go toward server costs. Both programmers and donators will be eternally honored (at their discretion) on this page.

Contributors
Juan Potato
Tiago Danin
bb010g
Ender
Iman Daneshi
HeitorPB
Akronix
Ville
dogtopus
Donators
n8
Alex
Brayden Banks