prosody-modules
dad0367d33e8
mod_ogp/README.markdown

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mod_ogp/README.markdown @ 4480:dad0367d33e8

mod_rest: Revert leftover of unfinished ?query mapping Idea was to allow second level data fields to be passed as query parameters, i.e. /rest/command/{to}/?command=execute&node=foobar but that's still a work in progress, so reverted here for now.
author Kim Alvefur <zash@zash.se>
date Sun, 28 Feb 2021 20:59:53 +0100
parent 4460:205e50fdcebc
child 4483:c4f11a4b5ac7
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# 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/