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annotate mod_ogp/README.markdown @ 4473:3b50a9a75fb6

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mod_rest: Roundtrip disco and items when string or boolean is used E.g. {disco:true} turns to <query/> and back to {disco:true}, same with {items:true}. Similarily, {disco:"node"}, {items:"node"} turn into <query node="node"/> and back.
author Kim Alvefur <zash@zash.se>
date Fri, 26 Feb 2021 22:05:25 +0100
parents 205e50fdcebc
children c4f11a4b5ac7
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1 # mod_ogp
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2
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3 This module adds [Open Graph Protocol](https://ogp.me) metadata to URLs sent inside a MUC.
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5 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.
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6 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:
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7
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8 ```
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9 <message id="example" from="chatroom@chatservice.example" to="chatroom@chatservice.example">
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10 <apply-to xmlns="urn:xmpp:fasten:0" id="origin-id-X">
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11 <meta xmlns="http://www.w3.org/1999/xhtml" property="og:title" content="The Rock"/>
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12 <meta xmlns="http://www.w3.org/1999/xhtml" property="og:url" content="https://www.imdb.com/title/tt0117500/"/>
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13 <meta xmlns="http://www.w3.org/1999/xhtml" property="og:image" content="https://ia.media-imdb.com/images/rock.jpg"/>
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14 </apply-to>
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15 </message>
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16 ```
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17
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18 The module is intentionally simple in the sense that it is basically a transport for https://ogp.me/