Jabber transport to Telegram network
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README.md

Dependencies

  • Ruby >= 1.9
  • xmpp4r == 0.5.6
  • tdlib-ruby == 2.0 with pre-compiled libtdjson.so

There is pre-compiled libtdjson.so for Debian Stretch x64 in repository.
For any other distro you need to manually compile tdlib and place libtdjson.so to relative lib/ directory (or LD_LIBRARY_PATH).

Installation

First of all, you need to create component listener on your Jabber server. For example, for ejabberd in /etc/ejabberd/ejabberd.yml:

listen:  
  -  
    port: 8888  
    module: ejabberd_service  
    access: all  
    shaper_rule: fast  
    ip: "127.0.0.1"  
    service_check_from: false  
    hosts:  
        "tlgrm.localhost":  
            password: "secret"

Next, rename config.yml.example to config.yml and edit xmpp section to match your component listener:

:xmpp:
	db 'users.db'  
	jid: 'tlgrm.localhost'  
	host: 'localhost'  
	port: 8888  
	secret: 'secret'  
	loglevel: :warn   

Configuration

It is good idea to obtain Telegram API ID from https://my.telegram.org to remove demo key requests limit, and then edit in config.yml:

:telegram:
    :tdlib:
        :lib_path: 'lib/'
        :client:
            :api_id: '845316' # telegram API ID (my.telegram.org) #
            :api_hash: '27fe5224bc822bf3a45e015b4f9dfdb7' # telegram API HASH (my.telegram.org) #
    ...

How to receive files from Telegram

First of all, you need to set up web server that will serve some directory in your filesystem. Example nginx config:

server {
	listen 80;
	server_name tlgrm.localhost;
	location /content {
		alias /var/zhabogram;
	}
}

You need to set :content: → :path: and :link: config.yml.

Set :path: according to location (for our example it will be /var/zhabogram/content).
Set :link: according to server_name (for our example it will be http://tlgrm.localhost)

How to send files to Telegram chats

You need to setup mod_http_upload for your XMPP server.
For example, for ejabberd in /etc/ejabberd/ejabberd.yml

modules:
  mod_http_upload:
    docroot: "/var/ejabberd/upload" # this must be a valid path, user ownership and SELinux flags must be set accordingly
    put_url: "https://xmpp.localhost:5443/upload/@HOST@"
    get_url: "https://xmppfiles.localhost/upload/@HOST@"
    access: local
    max_size: 500000000 #500 MByte
    thumbnail: false
    file_mode: "0644"
    dir_mode: "0744"

Then you need to setup nginx proxy that will serve get_url path, because Telegram will not handle URLs with non-default http(s) ports.
Example nginx config:

/``` server {

listen 80;
listen 443 ssl;

server_name xmppfiles.localhost;

    # SSL settigns #
    keepalive_timeout   60;
    ssl_certificate      /etc/ssl/domain.crt;
    ssl_certificate_key  /etc/ssl/domain.key;
    ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers  "RC4:HIGH:!aNULL:!MD5:!kEDH";
    add_header Strict-Transport-Security 'max-age=604800';

    location / {
        proxy_pass https://xmpp.localhost:5443;
    }   

}

```

Finally, update :upload: in your config.yml to match server_name in nginx config.