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mod_sasl2_fast: More robust handling of stream@from and user-agent@id
author Matthew Wild <mwild1@gmail.com>
date Fri, 14 Oct 2022 15:44:00 +0100
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1 # Introduction
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2
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3 This module externalizes MUC authorization via HTTP.
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4 Whenever a user wants to join a MUC, an HTTP GET request is made to `authorization_url`
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5 with the user's bare jid (`userJID`), the MUC jid (`mucJID`) and the user's nickname (`nickname`) as GET parameters.
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6 Example:
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7 `https://www.prosody.im/users/can-join/?userJID=romeo@example.com&mucJID=teaparty@chat.example.com&nickname=Romeo`
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8
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9 This allows an external service to decide whether a user is authorized to join a MUC or not.
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10
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11 When a user is authorized to join a MUC, this module expects the following JSON payload:
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12 ```
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13 {
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14 allowed: true,
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15 error: "",
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16 }
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17 ```
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18 Otherwise, either the user not being authorized or some failure in the external service:
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19 ```
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20 {
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21 allowed: false,
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22 error: "Some error message to be displayed in this module's logs",
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23 }
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24 ```
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25
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26 # Configuring
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27
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28 ## Enabling
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29
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30 ``` {.lua}
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31 Component "rooms.example.net" "muc"
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32
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33 modules_enabled = {
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34 "muc_http_auth";
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35 }
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36
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37 ```
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38
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39
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40 ## Settings
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41
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42 | Name | Description | Default |
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43 |------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------|---------|
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44 | muc_http_auth_url | URL of the external HTTP service to which send `userJID`, `mucJID` and `nickname` in a GET request | "" |
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45 | muc_http_auth_enabled_for | A map of user hostnames to an array of MUC names (node part) to enable this module for. To enable for all hostnames, use `"all"` as key. | nil |
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46 | muc_http_auth_disabled_for | A map of user hostnames to an array of MUC names (node part) to disable this module for. To disable for all hostnames, use `"all"` as key. | nil |
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47 | muc_http_auth_insecure | Disable certificate verification for request. Only intended for development of the external service. | false |
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48 | muc_http_auth_authorization_header | Value of the Authorization header if requested by the external HTTP service. Example: `Basic dXNlcm5hbWU6cGFzc3dvcmQ=` | nil |
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50
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51 This module can be enabled/disabled for specific rooms. Only one of the following settings must be set.
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52 ```
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53 -- muc_http_auth_enabled_for = {["all"] = {"teaparty"}}
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54 -- muc_http_auth_disabled_for = {["all"] = {"teaparty"}}
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55 ```
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56 If none is set, all rooms in the MUC component will have this module enabled.
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57
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58 Note: Use the node part of the MUC jid for these lists. Example:
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59
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60 Wrong:
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61 `muc_http_auth_enabled_for = {["all"] = {"teaparty@rooms.example.net"}}`
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62
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63 Correct:
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64 `muc_http_auth_enabled_for = {["all"] = {"teaparty"}}`
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65
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66 It's also possible to disable/enable checking for a particular host, for example:
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67
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68 `muc_http_auth_enabled_for = {["jabber.org"] = {"teaparty"}, ["prosody.org] = {"orchard"}}`