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mod_ogp/README.markdown @ 4486:4f41678ba00d
mod_rest/openapi: Fix dataform references
Thought I had moved these out into components.schemas?
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 02 Mar 2021 16:14:20 +0100 |
parent | 4485:2c4b65bfac62 |
child | 4597:c858c76d0845 |
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4460 | 1 # mod_ogp |
2 | |
3 This module adds [Open Graph Protocol](https://ogp.me) metadata to URLs sent inside a MUC. | |
4 | |
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. | |
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: | |
7 | |
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mod_ogp/README: Annotate example as XML to enable syntax highlighting
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8 ```xml |
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9 <message id="example" from="chatroom@muc.example.org" to="chatroom@muc.example.org"> |
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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> |
4460 | 16 ``` |
17 | |
18 The module is intentionally simple in the sense that it is basically a transport for https://ogp.me/ | |
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19 |
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20 Configuration |
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21 ------------- |
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22 |
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23 You can present a whitelist of domains for which OGP metadata will be fetched |
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24 via the `ogp_domain_whitelist` setting. |
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25 |
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26 For example: |
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27 |
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28 ```lua |
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29 Component "muc.example.org" "muc" |
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30 modules_enabled = { "ogp" } |
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31 ogp_domain_whitelist = { "prosody.im" } |
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32 ``` |