# mod_ogp

This module adds [Open Graph Protocol](https://ogp.me) metadata to URLs sent inside a MUC.

With mod_ogp enabled, when a user sends a URL in a MUC (where the message has its `id` equal to its `origin-id`), the module calls the URL and parses the result for `<meta>` html tags that have any `og:...` properties.
If it finds any, it sends a [XEP-0422 fastening](https://xmpp.org/extensions/xep-0422.html) applied to the original message that looks like:

```
    <message id="example" from="chatroom@chatservice.example" to="chatroom@chatservice.example">
        <apply-to xmlns="urn:xmpp:fasten:0" id="origin-id-X">
            <meta xmlns="http://www.w3.org/1999/xhtml" property="og:title" content="The Rock"/>
            <meta xmlns="http://www.w3.org/1999/xhtml" property="og:url" content="https://www.imdb.com/title/tt0117500/"/>
            <meta xmlns="http://www.w3.org/1999/xhtml" property="og:image" content="https://ia.media-imdb.com/images/rock.jpg"/>
        </apply-to>
    </message>
```

The module is intentionally simple in the sense that it is basically a transport for https://ogp.me/