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ehForwarderBot / efb-telegram-master

EFB Telegram Master Channel, a channel for EH Forwarder Bot.
GNU Affero General Public License v3.0
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efb-master-channel eh-forwarder-bot telegram telegram-bot

readme

EFB Telegram Master Channel (ETM)

.. image:: https://img.shields.io/pypi/v/efb-telegram-master.svg :alt: PyPI release :target: https://pypi.org/project/efb-telegram-master/ .. image:: https://github.com/ehForwarderBot/efb-telegram-master/workflows/Tests/badge.svg :alt: Tests status :target: https://github.com/ehForwarderBot/efb-telegram-master/actions .. image:: https://pepy.tech/badge/efb-telegram-master/month :alt: Downloads per month :target: https://pepy.tech/project/efb-telegram-master .. image:: https://d322cqt584bo4o.cloudfront.net/ehforwarderbot/localized.svg :alt: Translate this project :target: https://crowdin.com/project/ehforwarderbot/

.. image:: https://github.com/ehForwarderBot/efb-telegram-master/raw/master/banner.png :alt: Banner

README in other languages_.

.. TRANSLATORS: change the URL on previous line as "." (without quotations). .. _README in other languages: ./readme_translations

Channel ID: blueset.telegram

ETM is a Telegram Master Channel for EH Forwarder Bot, based on Telegram Bot API, python-telegram-bot.

Requirements

Getting Started

  1. Install all required binary dependencies

  2. Install ETM

    .. code:: shell

    pip3 install efb-telegram-master

  3. Enable and configure ETM using the EFB configuration wizard, or enable it manually in the profile’s config.yaml.

    The path of your profile storage directory depends on your configuration.

    (As of EFB 2, default profile storage directory is located at ~/.ehforwarderbot/profiles/default )

  4. Configure the channel (manual configure instructions as follows)

Alternative installation methods


ETM also has other alternative installation methods
contributed by the community, including:

- `AUR package`_ maintained by KeLiu_ (``python-efb-telegram-master-git``)
- Other `installation scripts and containers (e.g. Docker)`_

.. _KeLiu: https://github.com/specter119
.. _AUR package: https://aur.archlinux.org/packages/python-efb-telegram-master-git
.. _installation scripts and containers (e.g. Docker): https://efb-modules.1a23.studio#scripts-and-containers-eg-docker

Manual Configuration
--------------------

Set up a bot

Create a bot with @BotFather_, give it a name and a username. Then you’ll get a token, which will be used later. Keep this token secure, as it gives who owns it the full access to the bot.

.. _@BotFather: https://t.me/botfather

Use /setjoingroups to allow your bot to join groups. Use /setprivacy to disable the privacy restriction of the bot, so that it can receive all messages in the group.

Complete configuration file


Configuration file is stored at
``<profile directory>/blueset.telegram/config.yaml``.

A sample config file can be as follows:

.. code:: yaml

    ##################
    # Required items #
    ##################

    # [Bot Token]
    # This is the token you obtained from @BotFather
    token: "012345678:1Aa2Bb3Vc4Dd5Ee6Gg7Hh8Ii9Jj0Kk1Ll2M"

    # [List of Admin User IDs]
    # ETM will only process messages and commands from users
    # listed below. This ID can be obtained from various ways 
    # on Telegram.
    admins:
    - 102938475
    - 91827364

    ##################
    # Optional items #
    ##################
    # [Experimental Flags]
    # This section can be used to toggle experimental functionality.
    # These features may be changed or removed at any time.
    # Options in this section is explained afterward.
    flags:
        option_one: 10
        option_two: false
        option_three: "foobar"

    # [Network Configurations]
    # [RPC Interface]
    # Refer to relevant sections afterwards for details.

Usage
-----

At the beginning, messages from all senders will be sent to the user
directly, that means every message will be mixed in the same
conversation. By linking a chat, you can redirect messages from a
specific sender to an empty group for a more organized conversation.

In a nutshell, ETM offers the following commands, you can also send it
to BotFather for a command list::

    help - Show commands list.
    link - Link a remote chat to a group.
    unlink_all - Unlink all remote chats from a group.
    info - Display information of the current Telegram chat.
    chat - Generate a chat head.
    extra - Access additional features from Slave Channels.
    update_info - Update info of linked Telegram group.
    react - Send a reaction to a message, or show a list of reactors.
    rm - Remove a message from its remote chat.

.. note::

    In case of multiple admins are assigned, they may all send message on
    your behalf, but only the 0th admin can receive direct message from
    the bot.

``/link``: Link a chat
  1. Create a new group, invite your bot to the group
  2. Send /link directly to the bot, then select your preferred slave chat.
  3. Tap “Link” and select your new group. You can also choose to unlink or relink a linked chat from this menu.
  4. Tap “Start” at the bottom of your screen, and you should see a success message: “Chat linked.”

.. note::

You may introduce non-ETM admin users to the group, however, they:

-  Can read all messages send from the related remote chat;
-  May NOT send message on your behalf.

If the “Link” button doesn’t work for you, you may try the “Manual Link/Relink” button. To manually link a remote chat:

  1. Add the bot to the group you want to link to
  2. Copy the code provided by the bot, and send it to the group.
  3. If the group is linked successfully, you would receive a confirmation from the bot.

Also, you can send /unlink_all to a group to unlink all remote chats from it.

Also, if you want to link a chat which you just used, you can simply reply /link quoting a previous message from that chat without choosing from the long chat list.

Advanced feature: Filtering ^^^^^^^^^^^^^^^^^^^^^^^^^^^

If you have just too many chats, and being too tired for keep tapping Next >, or maybe you just want to find a way to filter out what you’re looking for, now ETM has equipped /chat and /list with filtering feature. Attach your keyword behind, and you can get a filtered result.

E.g.: /chat Eana will give you all chats has the word “Eana”.

.. admonition:: Technical Details

The filter query is in fact a regular expression matching. We used
Python’s ``re.search`` with flags ``re.DOTALL | re.IGNORECASE`` in
this case, i.e.: ``.`` matches everything including line breaks, and
the query is NOT case-sensitive. Each comparison is done against a
specially crafted string which allows you to filter multiple criteria.

::

Channel: <Channel name>
Channel ID: <Channel ID>
Name: <Chat name>
Alias: (<Chat Alias>|None)
ID: <Chat Unique ID>
Type: (Private|Group|System)
Mode: [Linked]
Description: <Description>
Notification: (ALL|MENTION|NONE)
Other: <Python Dictionary String>

.. note::

Type can be either “User” or “Group”

Other is the vendor specific information provided by slave channels.
Format of such information is specified in their documentations
respectively.

Examples:

Send a message


Send to a linked chat
^^^^^^^^^^^^^^^^^^^^^

You can send message as you do in a normal Telegram chat.

What is supported:

-  Send/forward message in all supported types
-  Quote-reply to a message
-  Send message with inline bot in supported types

What is NOT supported:

-  @ reference
-  Markdown/HTML formatting
-  Inline buttons
-  Messages with unsupported types.

.. note::

    This only applies to Telegram groups that are linked to a single remote
    chat, groups that are linked with multiple remote chats shall work in the
    same way as non-linked chats.

Send to a non-linked chat
^^^^^^^^^^^^^^^^^^^^^^^^^

To send a message to a non-linked chat, you should “quote-reply” to a
message or a “chat head” that is sent from your recipient. Those
messages should appear only in the bot conversation.

In a non-linked chat, quote-reply will not be passed on to the remote
channel, everything else is supported as it does in a linked chat.

Quick reply in non-linked chats
'''''''''''''''''''''''''''''''
ETM provides a mechanism that allow you to keep sending messages to the same
recipient without quoting every single time. ETM will store the remote chat you
sent a message to in every Telegram chat (i.e. a Telegram group or the bot),
which is known as the “last known recipient” of the Telegram chat.

In case where recipient is not indicated for a message, ETM will try to deliver
it to the “last known recipient” in the Telegram chat only if:

1. your last message with the “last known recipient” is with in an hour, and
2. the last message in this Telegram chat is from the “last known recipient”.

Edit and delete message
^^^^^^^^^^^^^^^^^^^^^^^

In EFB v2, the framework added support to message editing and removal,
and so does ETM. However, due to the limitation of Telegram Bot API,
although you may have selected “Delete for the bot”, or “Delete for
everyone” while deleting messages, the bot would **not** know anything 
about it. Therefore, if you want your message to be removed from a 
remote chat, edit your message and prepend it with ``rm``` 
(it’s ``R``, ``M``, and ``~```, not single quote), so that the bot knows 
that you want to delete the message.

Alternatively, you can also reply ``/rm`` to a message to remove it from its
remote chat. This can be useful when you cannot edit the message directly
(sticker, location, etc.), or when the message is not sent via ETM.

Please also notice that some slave channels may not support editing and/or
deleting messages depends on their implementations.

``/chat``: Chat head
^^^^^^^^^^^^^^^^^^^^

If you want to send a message to a non-linked chat which has not yet
sent you a message, you can ask ETM to generate a “chat head”. Chat head
works similarly to an incoming message, you can reply to it to send
messages to your recipient.

Send ``/chat`` to the bot, and choose a chat from the list. When you see
“Reply to this message to chat with ...”, it’s ready to go.

Advanced feature: Filtering
'''''''''''''''''''''''''''

Filter is also available in ``/chat`` command. Please refer to the
same chapter above, under ``/link`` for details.

``/extra``: External commands from slave channels (“additional features”)

Some slave channels may provide commands that allows you to remotely control those accounts, and achieve extra functionality, those commands are called “additional features”. To view the list of available extra functions, send /extra to the bot, you will receive a list of commands available.

Those commands are named like “\ /<number>_<command_name>\ ”, and can be called like an CLI utility. (of course, advanced features like piping etc would not be supported)

/update_info: Update details of linked Telegram group


ETM can help you to update the name and profile picture of a group to
match with appearance in the remote chat. This will also add a list of
current members to the Telegram group description if the remote chat is
a group.

This functionality is available when:

* This command is sent to a group
* The bot is an admin of the group
* The group is linked to **exactly** one remote chat
* The remote chat is accessible

Profile picture will not be set if it’s not available from the slave
channel.

``/react``: Send reactions to a message or show a list of reactors

Reply /react to a message to show a list of chat members who have reacted to the message and what their reactions are.

Reply /react followed by an emoji to react to this message, e.g. /react 👍. Send /react - to remove your reaction.

Note that some slave channels may not accept message reactions, and some channels have a limited reactions you can send with. Usually when you send an unaccepted reaction, slave channels can provide a list of suggested reactions you may want to try instead.

/rm: Delete a message from its remote chat


You can reply ``/rm`` to a message to remove it from its remote chat.
Comparing to prepending ``rm``` to a message, you can use this command
even when you cannot edit the message directly (sticker, location, 
etc.), or when the message is not sent via ETM. It can also allow you
to remove messages sent by others if provided by the slave channel. 

Please notice that some slave channels may not support removing messages 
depends on their implementations.

Telegram Channel support

ETM supports linking remote chats to Telegram Channels with partial support.

The bot can:

It cannot:

Currently the following commands are supported in channels:

How to use:

  1. Add the bot as an administrator of the channel
  2. Send commands to the channel
  3. Forward the command message to the bot privately

.. admonition:: Technical Details

Telegram Bot API prevents bot from knowing who actually sent a message
in a channel (not including signatures as that doesn't reflect the numeric
ID of the sender). In fact, that is the same for normal users in a channel
too, even admins.

If messages from channels are to be processed unconditionally, not only
that other admins in existing channels can add malicious admins to it,
anyone on Telegram, once knows your bot username, can add it to a channel
and use the bot on your behalf. Thus, we think that it is not safe to
process messages directly from a channel.

Limitations

Due to the technical constraints of both Telegram Bot API and EH Forwarder Bot framework, ETM has the following limitations:

Experimental flags

The following flags are experimental features, may change, break, or disappear at any time. Use at your own risk.

Flags can be enabled in the flags key of the configuration file, e.g.:

.. code:: yaml

flags:
    flag_name: flag_value

Network configuration: timeout tweaks

This chapter is adapted from Python Telegram Bot wiki__, licensed under CC-BY 3.0.

__ https://github.com/python-telegram-bot/python-telegram-bot/wiki/Handling-network-errors#tweaking-ptb

python-telegram-bot performs HTTPS requests using urllib3. urllib3 provides control over connect_timeout & read_timeout. urllib3 does not separate between what would be considered read & write timeout, so read_timeout serves for both. The defaults chosen for each of these parameters is 5 seconds.

The connect_timeout value controls the timeout for establishing a connection to the Telegram server(s).

Changing the defaults of read_timeout & connect_timeout can be done by adjusting values request_kwargs section in ETM’s config.yaml.

.. code:: yaml

...

request_kwargs: read_timeout: 6 connect_timeout: 7

Run ETM behind a proxy

This chapter is adapted from Python Telegram Bot wiki__, licensed under CC-BY 3.0.

__ https://github.com/python-telegram-bot/python-telegram-bot/wiki/Working-Behind-a-Proxy

You can appoint proxy specifically for ETM without affecting other channels running in together in the same EFB instance. This can also be done by adjusting values request_kwargs section in ETM’s config.yaml.

HTTP proxy server


.. code:: yaml

   request_kwargs:
       # ...
       proxy_url: http://PROXY_HOST:PROXY_PORT/
       # Optional, if you need authentication:
       username: PROXY_USER
       password: PROXY_PASS

SOCKS5 proxy server

This is configuration is supported, but requires an optional/extra python package. To install:

.. code:: shell

pip install python-telegram-bot[socks]

.. code:: yaml

request_kwargs:

...

   proxy_url: socks5://URL_OF_THE_PROXY_SERVER:PROXY_PORT
   # Optional, if you need authentication:
   urllib3_proxy_kwargs:
       username: PROXY_USER
       password: PROXY_PASS

RPC interface

A standard Python XML RPC server__ is implemented in ETM 2. It can be enabled by adding a rpc section in ETM’s config.yml file.

__ https://docs.python.org/3/library/xmlrpc.html

.. code:: yaml

rpc: server: 127.0.0.1 port: 8000

..

.. warning:: The xmlrpc module is not secure against maliciously constructed data. Do not expose the interface to untrusted parties or the public internet, and turn off after use.

Exposed functions


Functions in `the db (database manager) class`_ and
`the RPCUtilities class`_ are exposed. Refer to the source code
for their documentations.

How to use

Set up a SimpleXMLRPCClient in any Python script and call any of the exposed functions directly. For details, please consult Python documentation on xmlrpc__.

__ https://docs.python.org/3/library/xmlrpc.html

.. _the db (database manager) class: https://etm.1a23.studio/blob/master/efb_telegram_master/db.py .. _the RPCUtilities class: https://etm.1a23.studio/blob/master/efb_telegram_master/rpc_utilities.py

Setup Webhook

For details on how to setup a webhook, please visit this wiki article_.

.. _wiki article: https://github.com/ehForwarderBot/efb-telegram-master/wiki/Setup-Webhook

License

ETM is licensed under GNU Affero General Public License 3.0_ or later versions::

EFB Telegram Master Channel: A master channel for EH Forwarder Bot.
Copyright (C) 2016 - 2020 Eana Hufwe, and the EFB Telegram Master Channel contributors
All rights reserved.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

.. _GNU Affero General Public License 3.0: https://www.gnu.org/licenses/agpl-3.0.txt

Translation support

ETM supports translated user interface with the help of community. The bot detects languages of Telegram Client of the admins from their messages, and automatically matches with a supported language on the go. Otherwise, you can set your language by turning off the auto_locale feature, and then setting the locale environmental variable (LANGUAGE, LC_ALL, LC_MESSAGES or LANG) to one of our supported languages. Meanwhile, you can help to translate this project into your languages on our Crowdin page_.

.. _our Crowdin page: https://crowdin.com/project/ehforwarderbot/

.. note::

If your are installing from source code, you will not get translations
of the user interface without manual compile of message catalogs (``.mo``)
prior to installation.