152 lines
6.5 KiB
HTML
152 lines
6.5 KiB
HTML
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<title>Evan Pratten</title>
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<a class="nav-item nav-link" href="/about">About</a>
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</div> -->
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<h1>devDNS</h1>
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<h4>The DNS over devRant service</h4>
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<hr>
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<p><em>2019-07-01 18:13:00 -0400</em></p>
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<br>
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<p>Over the past year and a half, I have been hacking my way around the undocumented <a href="https://devrant.com">devRant</a> auth/write API. At the request of devRant’s creators, this API must not be documented due to the way logins work on the platform. That is besides the point. I have been working on a little project called <a href="https://devrant.com/collabs/2163502">devDNS</a> over the past few days that uses this undocumented API. Why must I be so bad at writing intros?</p>
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<h2 id="what-is-devdns">What is devDNS</h2>
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<p>devDNS is a devRant bot written in python. It will serve any valid DNS query from any user on the platform. A query is just a comment in one of the following forms:</p>
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<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>@devDNS example.com
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</code></pre></div></div>
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<p>or</p>
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<div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code>@devDNS MX example.com
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</code></pre></div></div>
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<p>Of course, <code class="highlighter-rouge">MX</code> and <code class="highlighter-rouge">example.com</code> are to be replaced with the domain and entry of your choosing.</p>
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<p>devDNS was inspired by <a href="https://twitter.com/1111resolver">@1111Resolver</a>, and the source is available on <a href="https://github.com/Ewpratten/devDNS">GitHub</a>.</p>
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<h2 id="how-it-works">How it works</h2>
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<p>The Python script behind devDNS is very simple. devDNS does the following every 10 seconds:</p>
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<ul>
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<li>Fetch all new notifs</li>
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<li>Find only mentions</li>
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<li>Spin off a thread for each mention that passes a basic parser (Is the message 2 or 3 words long)</li>
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<li>In the thread, check if the message is a control message (allows me to view the status of the bot via devRant)</li>
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<li>Check if the request matches a required pattern</li>
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<li>Call <code class="highlighter-rouge">dnspython</code> with requested record and domain</li>
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<li>Receive answer from a custom <a href="https://pi-hole.net/">PIHole</a> server with caching and super low latency</li>
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<li>Send a comment with the results to the requester</li>
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</ul>
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<p>Thats it! Super simple, and only two days from concept to reality.</p>
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<h2 id="where-is-this-hosted">Where is this hosted?</h2>
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<p>This program is hosted on a raspberry pi laying in my room running docker. I also have <a href="https://www.portainer.io/">Portainer</a> set up so I can easily monitor the bot from my phone over my VPN.</p>
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Site design by: <a href="https://retrylife.ca">Evan Pratten</a> |
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This site was last updated at: 2019-08-21 12:48:55 -0400
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