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telegram-bot-bash
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Kay Marquardt (Gnadelwartz) 2020-06-14 13:50:44 +02:00
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README.html
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@ -175,6 +175,16 @@ his is bashbot, the Telegram bot written entirely in bash.
It features background tasks and interactive chats, and can serve as an interface for CLI programs.
</code></pre>
<p>For more Information on how to install, customize and use your new bot, read the <a href="#Documentation">Documentation</a></p>
<h3>Log files</h3>
<p>Since version 0.96 bashbot log commands recieved (updates) and connection errors. If you start bashbot in debug mode bash stdout, stderr and all recieved telegram message updates are logged also.</p>
<p>To enable debug mode start bashbot with debug as third argument: <code>bashbot start debug</code></p>
<pre><code>├── logs
│   ├── ERROR.log # connection errors from / to telegram API
│   ├── UPDATE.log # summary whats received from your bot
│   │
│   ├── DEBUG.log # stdout/stderr of you bot (debug mode enabled)
│   └── MESSAGE.log # full text of all message updates received (debug mode enabled)
</code></pre>
<hr />
<h2>Security Considerations</h2>
<p>Running a Telegram Bot means it is connected to the public and you never know whats send to your Bot.</p>
@ -184,18 +194,18 @@ It features background tasks and interactive chats, and can serve as an interfac
<p>A powerful tool to improve your scripts is <code>shellcheck</code>. You can <a href="https://www.shellcheck.net/">use it online</a> or <a href="https://github.com/koalaman/shellcheck#installing">install shellcheck locally</a>. Shellcheck is used extensive in bashbot development to enshure a high code quality, e.g. it's not allowed to push changes without passing all shellcheck tests. In addition bashbot has a <a href="doc/7_develop.md">test suite</a> to check if important functionality is working as expected.</p>
<h3>use printf whenever possible</h3>
<p>If you're writing a script and it is taking external input (from the user as arguments, or file names from the file system...), you shouldn't use echo to display it. <a href="https://unix.stackexchange.com/a/6581">Use printf whenever possible</a></p>
<div class="sourceCode" id="cb3"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb3-1" title="1"> <span class="co"># very simple</span></a>
<a class="sourceLine" id="cb3-2" title="2"> <span class="bu">echo</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb3-3" title="3"> <span class="bu">printf</span> <span class="st">&#39;%s\n&#39;</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb3-4" title="4"> <span class="ex">-</span><span class="op">&gt;</span> text with variables. PWD=/home/xxx</a>
<a class="sourceLine" id="cb3-5" title="5"></a>
<a class="sourceLine" id="cb3-6" title="6"> <span class="co"># more advanced</span></a>
<a class="sourceLine" id="cb3-7" title="7"> <span class="va">FLOAT=</span><span class="st">&quot;1.2346777892864&quot;</span> <span class="va">INTEGER=</span><span class="st">&quot;12345.123&quot;</span></a>
<a class="sourceLine" id="cb3-8" title="8"> <span class="bu">echo</span> <span class="st">&quot;text with variabeles. float=</span><span class="va">$FLOAT</span><span class="st">, integer=</span><span class="va">$INTEGER</span><span class="st">, PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb3-9" title="9"> <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx</a>
<a class="sourceLine" id="cb3-10" title="10"></a>
<a class="sourceLine" id="cb3-11" title="11"> <span class="bu">printf</span> <span class="st">&quot;text with variables. float=%.2f, integer=%d, PWD=%s\n&quot;</span> <span class="st">&quot;&quot;</span> <span class="st">&quot;</span><span class="va">$INTEGER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb3-12" title="12"> <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.23, integer=12345, PWD=/home/xxx</a></code></pre></div>
<div class="sourceCode" id="cb4"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb4-1" title="1"> <span class="co"># very simple</span></a>
<a class="sourceLine" id="cb4-2" title="2"> <span class="bu">echo</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb4-3" title="3"> <span class="bu">printf</span> <span class="st">&#39;%s\n&#39;</span> <span class="st">&quot;text with variables. PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb4-4" title="4"> <span class="ex">-</span><span class="op">&gt;</span> text with variables. PWD=/home/xxx</a>
<a class="sourceLine" id="cb4-5" title="5"></a>
<a class="sourceLine" id="cb4-6" title="6"> <span class="co"># more advanced</span></a>
<a class="sourceLine" id="cb4-7" title="7"> <span class="va">FLOAT=</span><span class="st">&quot;1.2346777892864&quot;</span> <span class="va">INTEGER=</span><span class="st">&quot;12345.123&quot;</span></a>
<a class="sourceLine" id="cb4-8" title="8"> <span class="bu">echo</span> <span class="st">&quot;text with variabeles. float=</span><span class="va">$FLOAT</span><span class="st">, integer=</span><span class="va">$INTEGER</span><span class="st">, PWD=</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb4-9" title="9"> <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.2346777892864, integer=12345.123, PWD=/home/xxx</a>
<a class="sourceLine" id="cb4-10" title="10"></a>
<a class="sourceLine" id="cb4-11" title="11"> <span class="bu">printf</span> <span class="st">&quot;text with variables. float=%.2f, integer=%d, PWD=%s\n&quot;</span> <span class="st">&quot;&quot;</span> <span class="st">&quot;</span><span class="va">$INTEGER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$PWD</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb4-12" title="12"> <span class="ex">-</span><span class="op">&gt;</span>text with variables. float=1.23, integer=12345, PWD=/home/xxx</a></code></pre></div>
<h3>Do not use #!/usr/bin/env bash</h3>
<p><strong>We stay with /bin/bash shebang, because it's more save from security perspective.</strong></p>
<p>Using a fixed path to the system provided bash makes it harder for attackers or users to place alternative versions of bash and avoids using a possibly broken, mangled or compromised bash executable.</p>
@ -225,27 +235,27 @@ It features background tasks and interactive chats, and can serve as an interfac
<h3>Can I send messages from CLI and scripts?</h3>
<p>Of course, you can send messages from CLI and scripts, simply install bashbot as <a href="#Your-really-first-bashbot-in-a-nutshell">described here</a>, send the messsage '/start' to set yourself as botadmin and stop the bot with <code>./bashbot.sh kill</code>.</p>
<p>Run the following commands in your bash shell or script while you are in the installation directory:</p>
<div class="sourceCode" id="cb4"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb4-1" title="1"><span class="co"># prepare bash / script to send commands</span></a>
<a class="sourceLine" id="cb4-2" title="2"><span class="bu">export</span> <span class="va">BASHBOT_HOME=</span><span class="st">&quot;</span><span class="va">$(</span><span class="bu">pwd</span><span class="va">)</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb4-3" title="3"><span class="bu">source</span> ./bashbot.sh source</a>
<a class="sourceLine" id="cb4-4" title="4"></a>
<a class="sourceLine" id="cb4-5" title="5"><span class="co"># send me a test message</span></a>
<a class="sourceLine" id="cb4-6" title="6"><span class="ex">send_message</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">cat</span> <span class="st">&quot;</span><span class="va">$BOTADMIN</span><span class="st">&quot;</span><span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;test&quot;</span></a>
<a class="sourceLine" id="cb4-7" title="7"></a>
<a class="sourceLine" id="cb4-8" title="8"><span class="co"># send me output of a system command</span></a>
<a class="sourceLine" id="cb4-9" title="9"><span class="ex">send_message</span> <span class="st">&quot;</span><span class="op">$(&lt;</span><span class="st">&quot;</span><span class="va">$BOTADMIN</span><span class="st">&quot;</span><span class="op">)</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">df</span> -h<span class="va">)</span><span class="st">&quot;</span></a></code></pre></div>
<div class="sourceCode" id="cb5"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb5-1" title="1"><span class="co"># prepare bash / script to send commands</span></a>
<a class="sourceLine" id="cb5-2" title="2"><span class="bu">export</span> <span class="va">BASHBOT_HOME=</span><span class="st">&quot;</span><span class="va">$(</span><span class="bu">pwd</span><span class="va">)</span><span class="st">&quot;</span></a>
<a class="sourceLine" id="cb5-3" title="3"><span class="bu">source</span> ./bashbot.sh source</a>
<a class="sourceLine" id="cb5-4" title="4"></a>
<a class="sourceLine" id="cb5-5" title="5"><span class="co"># send me a test message</span></a>
<a class="sourceLine" id="cb5-6" title="6"><span class="ex">send_message</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">cat</span> <span class="st">&quot;</span><span class="va">$BOTADMIN</span><span class="st">&quot;</span><span class="va">)</span><span class="st">&quot;</span> <span class="st">&quot;test&quot;</span></a>
<a class="sourceLine" id="cb5-7" title="7"></a>
<a class="sourceLine" id="cb5-8" title="8"><span class="co"># send me output of a system command</span></a>
<a class="sourceLine" id="cb5-9" title="9"><span class="ex">send_message</span> <span class="st">&quot;</span><span class="op">$(&lt;</span><span class="st">&quot;</span><span class="va">$BOTADMIN</span><span class="st">&quot;</span><span class="op">)</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$(</span><span class="fu">df</span> -h<span class="va">)</span><span class="st">&quot;</span></a></code></pre></div>
<p>For more information see <a href="doc/8_custom.md">Expert Use</a></p>
<h3>Why do I get "EXPECTED value GOT EOF" on start?</h3>
<p>May be your IP is blocked by telegram. You can test this by running curl or wget manually:</p>
<div class="sourceCode" id="cb5"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb5-1" title="1"><span class="ex">curl</span> -m 10 https://api.telegram.org/bot</a>
<a class="sourceLine" id="cb5-2" title="2"><span class="co">#curl: (28) Connection timed out after 10001 milliseconds</span></a>
<a class="sourceLine" id="cb5-3" title="3"></a>
<a class="sourceLine" id="cb5-4" title="4"><span class="fu">wget</span> -t 1 -T 10 https://api.telegram.org/bot</a>
<a class="sourceLine" id="cb5-5" title="5"><span class="co">#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.</span></a></code></pre></div>
<div class="sourceCode" id="cb6"><pre class="sourceCode bash"><code class="sourceCode bash"><a class="sourceLine" id="cb6-1" title="1"><span class="ex">curl</span> -m 10 https://api.telegram.org/bot</a>
<a class="sourceLine" id="cb6-2" title="2"><span class="co">#curl: (28) Connection timed out after 10001 milliseconds</span></a>
<a class="sourceLine" id="cb6-3" title="3"></a>
<a class="sourceLine" id="cb6-4" title="4"><span class="fu">wget</span> -t 1 -T 10 https://api.telegram.org/bot</a>
<a class="sourceLine" id="cb6-5" title="5"><span class="co">#Connecting to api.telegram.org (api.telegram.org)|46.38.243.234|:443... failed: Connection timed out.</span></a></code></pre></div>
<p>This may happen if to many wrong requests are sent to api.telegram.org, e.g. using a wrong token or not existing API calls. If you have a fixed IP you can ask telegram service to unblock your ip or change your IP. If you are running a socks or tor proxy on your server look for the <code>BASHBOT_CURL_ARGS</code> lines in 'mycommands.sh' as example.</p>
<p>@Gnadelwartz</p>
<h2>That's it!</h2>
<p>If you feel that there's something missing or if you found a bug, feel free to submit a pull request!</p>
<h4>$$VERSION$$ v0.96-0-g3871ca9</h4>
<h4>$$VERSION$$ v0.98-dev-10-g74caa49</h4>
</body>
</html>

18
README.md
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@ -102,6 +102,22 @@ It features background tasks and interactive chats, and can serve as an interfac
```
For more Information on how to install, customize and use your new bot, read the [Documentation](#Documentation)
### Log files
Since version 0.96 bashbot log commands recieved (updates) and connection errors. If you start bashbot in debug mode
bash stdout, stderr and all recieved telegram message updates are logged also.
To enable debug mode start bashbot with debug as third argument: `bashbot start debug`
```
├── logs
│   ├── ERROR.log # connection errors from / to telegram API
│   ├── UPDATE.log # summary whats received from your bot
│   │
│   ├── DEBUG.log # stdout/stderr of you bot (debug mode enabled)
│   └── MESSAGE.log # full text of all message updates received (debug mode enabled)
```
----
## Security Considerations
@ -219,4 +235,4 @@ This may happen if to many wrong requests are sent to api.telegram.org, e.g. usi
If you feel that there's something missing or if you found a bug, feel free to submit a pull request!
#### $$VERSION$$ v0.96-0-g3871ca9
#### $$VERSION$$ v0.98-dev-10-g74caa49

21
README.txt
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@ -131,6 +131,25 @@ interface for CLI programs.
For more Information on how to install, customize and use your new bot, read
the [Documentation](#Documentation)
### Log files
Since version 0.96 bashbot log commands recieved (updates) and connection
errors. If you start bashbot in debug mode
bash stdout, stderr and all recieved telegram message updates are logged also.
To enable debug mode start bashbot with debug as third argument: `bashbot start
debug`
```
├── logs
│   ├── ERROR.log # connection errors from / to telegram API
│   ├── UPDATE.log # summary whats received from your bot
│   │
│   ├── DEBUG.log # stdout/stderr of you bot (debug mode enabled)
│   └── MESSAGE.log # full text of all message updates received (debug
mode enabled)
```
----
## Security Considerations
@ -305,4 +324,4 @@ in 'mycommands.sh' as example.
If you feel that there's something missing or if you found a bug, feel free to
submit a pull request!
#### $$VERSION$$ v0.96-0-g3871ca9
#### $$VERSION$$ v0.98-dev-10-g74caa49

4
doc/2_usage.md
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@ -32,7 +32,7 @@ Have FUN!
├── scripts # place your bashbot interactive and background scripts here
│   └── interactive.sh.clean # interactive script template for new scripts
│
├── logs # here you'll find ERROR, DEBUG and MESSAGE.log
├── logs # here you'll find ERROR, UPDSTE, DEBUG and MESSAGE.log
│
├── modules # optional functions, sourced by commands.sh
│   ├── aliases.sh # to disable modules rename them xxx.sh.off
@ -261,5 +261,5 @@ send_action "${CHAT[ID]}" "action"
#### [Prev Create Bot](1_firstbot.md)
#### [Next Advanced Usage](3_advanced.md)
#### $$VERSION$$ v0.98-dev-7-gca05095
#### $$VERSION$$ v0.98-dev-10-g74caa49