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annotate mod_http_roster_admin/README.markdown @ 2670:6e01878103c0

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mod_smacks: Ignore user when writing or reading session_cache on prosody 0.9 At least under some circumstances it seems that session.username is nil when a user tries to resume his session in prosody 0.9. The username is not relevant when no limiting is done (limiting the number of entries in the session cache is only possible in prosody 0.10), so this commit removes the usage of the username when accessing the prosody 0.9 session cache.
author tmolitor <thilo@eightysoft.de>
date Thu, 06 Apr 2017 02:12:14 +0200
parents 234d679076c4
children e6f91e00b507
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1 ---
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2 labels:
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3 - 'Stage-Beta'
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4 summary: Delegate roster management to an external service
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5 ...
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6
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7 *NOTE: THIS MODULE IS RELEASED UNDER THE MOZILLA PUBLIC LICENSE VERSION 2.*
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8
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9 Normally the XMPP server will store and maintain the users' contact
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10 rosters. This module lets you delegate roster management to an external
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11 service.
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12
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13 Prosody will make an HTTP request to fetch the roster from the external
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14 service. The service will need to notify Prosody whenever a user's roster
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15 changes, so that Prosody can fetch a new roster for that user.
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16
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17 ## Configuring this module
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18
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19 This module relies on `mod_storage_memory` and `mod_block_subscriptions`.
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20
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21 In `.parts/prosody/etc/prosody/prosody.cfg.lua`, where your particular
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22 `VirtualHost` is being configured, add the following:
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23
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24 modules_enabled = {
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25 "http_roster_admin",
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26 "block_subscriptions",
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27 "storage_memory",
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28 "http_files"
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29 }
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30 modules_disabled = {
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31 -- Prosody will get the roster from the backend app,
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32 -- so we disable the default roster module.
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33 "roster"
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34 }
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35 storage = { roster = "memory" }
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36 http_roster_url = "http://localhost/contacts/%s" -- %s will be replaced by an URL-encoded username
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37
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38 The `http_roster_url` parameter needs to be configured to point to the
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39 URL in the backend application which returns users' contacts rosters.
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40
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41 In this URL, the pattern `%s` is replaced by an URL-encoded username.
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42
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43 When the user *john* then connects to Prosody, and `http_roster_url` is
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44 set to “http://app.example.org/contacts/%s”, then Prosody will make a
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45 GET request to http://app.example.org/contacts/john
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46
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47 ## Notifying Prosody of roster changes
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48
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49 The external service needs to notify Prosody whenever a user's roster
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50 changes. To do this, it must make an HTTP POST request to either:
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51
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52 - http://localhost:5280/roster_admin/refresh
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53 - https://localhost:5281/roster_admin/refresh
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55 Make sure that the "http_files" module is enabled in Prosody's configuration,
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56 for the above URLs to served.
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57
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58 Ports 5280/5281 can be firewalled and the web server (i.e. Apache or Nginx)
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59 can be configured to reverse proxy those URLs to for example
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60 https://example.org/http-bind.
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61
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62 The contents of the POST should be a JSON encoded array of usernames whose
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63 rosters have changed.
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64
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65 For example, if user ‘john’ became friends with ‘aaron’, both john’s
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66 contact list and aaron’s contact lists have changed:
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67
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68 ["john", "aaron"]
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69
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70 When the operation is complete Prosody will reply with a summary of the
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71 operation - a JSON object containing:
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72
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73 - **status**: either “ok” (success) or “error” (operation completely failed)
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74 - **message**: A human-readable message (for logging and debugging purposes)
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75 - **updated**: The number of rosters successfully updated
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76 - **errors**: The number of rosters that failed to update
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77
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78 Example:
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79
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80 {
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81 "status": "ok",
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82 "message": "roster update complete",
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83 "updated": 2,
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84 "errors": 0
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85 }
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86
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87 Prosody may also return status codes `400` or `500` in case of errors (such
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88 as a missing/malformed body).