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annotate mod_pubsub_post/README.markdown @ 3715:f03a023cd523

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mod_http_muc_log: Compose page title from room data More flexible than composing the title from name and date in the controller. Also opens the door to using other room data fields.
author Kim Alvefur <zash@zash.se>
date Sun, 13 Oct 2019 16:16:14 +0200
parents 7b1eede1a840
children a6db99c1420a
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1 ---
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2 labels:
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3 - 'Stage-Stable'
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4 summary: Publish to PubSub nodes from via HTTP POST/WebHooks
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5 ---
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6
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7 # Introduction
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8
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9 This module is a fairly generic WebHook receiver that lets you easily
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10 publish data to PubSub using a HTTP POST request. The payload can be
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11 Atom feeds, arbitrary XML, or arbitrary JSON. The type should be
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12 indicated via the `Content-Type` header.
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13
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14 ``` {.bash}
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15 curl http://localhost:5280/pubsub_post/princely_musings \
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16 -H "Content-Type: application/json" \
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17 --data-binary '{"musing":"To be, or not to be: that is the question"}'
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18 ```
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19
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20 - JSON data is wrapped in a [XEP-0335] container.
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21 - An Atom feed may have many `<entry>` and each one is published as
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22 its own PubSub item.
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23 - Other XML is simply published to a randomly named item as-is.
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24
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25 # Configuration
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26
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27 All settings are optional.
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28
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29 ## Actor identification
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30
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31 First we have to figure out who is making the request.
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32 This is configured on a per-node basis like this:
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33
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34 ``` {.lua}
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35 -- Per node secrets
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36 pubsub_post_actors = {
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37 princely_musings = "hamlet@denmark.lit"
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38 }
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39 pubsub_post_default_actor = "nobody@nowhere.invalid"
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40 ```
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41
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42 `pubsub_post_default_actor` is used when trying to publish to a node
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43 that is not listed in `pubsub_post_actors`. Otherwise the IP address
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44 of the connection is used.
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45
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46 ## Authentication
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47
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48 [WebSub](https://www.w3.org/TR/2018/REC-websub-20180123/) [Authenticated
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49 Content
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50 Distribution](https://www.w3.org/TR/2018/REC-websub-20180123/#authenticated-content-distribution)
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51 authentication is used.
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52
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53 ``` {.lua}
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54 pubsub_post_secrets = {
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55 princely_musings = "shared secret"
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56 }
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57 pubsub_post_default_secret = "default secret"
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58 ```
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59
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60 `pubsub_post_default_secret` is used when trying to publish to a node
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61 that is not listed in `pubsub_post_secrets`. Otherwise the request
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62 proceeds with the previously identified actor.
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63
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64 ::: {.alert .alert-danger}
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65 If configured without a secret and a default actor that has permission
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66 to create nodes the service becomes wide open.
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67 :::
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68
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69 ## Authorization
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70
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71 Authorization is handled via pubsub affiliations. Publishing requires an
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72 affiliation with the _publish_ capability, usually `"publisher"`.
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73
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74 ### Setting up affiliations
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75
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76 Prosodys PubSub module supports [setting affiliations via
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77 XMPP](https://xmpp.org/extensions/xep-0060.html#owner-affiliations), in
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78 trunk since [revision
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79 384ef9732b81](https://hg.prosody.im/trunk/rev/384ef9732b81), so
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80 affiliations can be configured with a capable client.
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81
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82 It can however be done from another plugin:
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83
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84 ``` {.lua}
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85 local mod_pubsub = module:depends("pubsub");
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86 local pubsub = mod_pubsub.service;
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87
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88 pubsub:create("princely_musings", true);
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89 pubsub:set_affiliation("princely_musings", true, "127.0.0.1", "publisher");
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90 ```