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mod_http_oauth2: Implement RFC 7628 Proof Key for Code Exchange Likely to become mandatory in OAuth 2.1. Backwards compatible since the default 'plain' verifier would compare nil with nil if the relevant parameters are left out.
author Kim Alvefur <zash@zash.se>
date Sat, 29 Apr 2023 13:09:46 +0200
parents 1da63fe35ef3
children
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1 ---
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2 labels:
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3 - Stage-Alpha
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4 summary: "Authenticate users against an external HTTP API"
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5 ...
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6
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7 # Overview
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8
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9 This authentication module allows Prosody to authenticate users against
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10 an external HTTP service.
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11
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12 # Configuration
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13
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14 ``` lua
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15 VirtualHost "example.com"
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16 authentication = "http"
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17 http_auth_url = "http://example.com/auth"
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18 ```
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19
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20 If the API requires Prosody to authenticate, you can provide static
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21 credentials using HTTP Basic authentication, like so:
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22
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23 ```
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24 http_auth_credentials = "prosody:secret-password"
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25 ```
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26
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27 # Developers
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28
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29 This section contains information for developers who wish to implement a
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30 HTTP service that Prosody can use for authentication.
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31
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32 ## Protocol
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33
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34 Prosody will make a HTTP request to the configured API URL with an
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35 appended `/METHOD` where `METHOD` is one of the methods described below.
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36
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37 GET methods must expect a series of URL-encoded query parameters, while
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38 POST requests will receive an URL-encoded form (i.e.
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39 `application/x-www-form-urlencoded`).
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40
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41 ## Parameters
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42
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43 user
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44 : The username, e.g. `stephanie` for the JID `stephanie@example.com`.
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45
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46 server
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47 : The host part of the user's JID, e.g. `example.com` for the JID
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48 `stephanie@example.com`.
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49
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50 pass
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51 : For methods that verify or set a user's password, the password will
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52 be supplied in this parameter, otherwise it is not set.
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53
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54 ## Methods
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55
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56 The only mandatory methods that the service must implement are `check_password`
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57 and `user_exists`. Unsupported methods should return a HTTP status code
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58 of `501 Not Implemented`, but other error codes will also be handled by
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59 Prosody.
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60
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61 Method HTTP method Success codes Error codes Response
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62 -------- ---- --- ----------------- -----------------------------------------------------------------
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63 register POST 201 409 (user exists)
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64 check\_password GET 200 A text string of `true` if the user exists, or `false` otherwise.
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65 user\_exists GET 200 A text string of `true` if the user exists, or `false` otherwise.
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66 set\_password POST 200, 201 or 204
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67 remove\_user POST 200, 201 or 204
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68
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69 ## Examples
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70
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71 With the following configuration:
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72
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73 ```
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74 authentication = "http"
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75 http_auth_url = "https://auth.example.net/api"
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76
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77 If a user connects and tries to log in to Prosody as "romeo@example.net"
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78 with the password "iheartjuliet", Prosody would make the following HTTP
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79 request:
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80
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81 ```
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82 https://auth.example.net/api/check_password?user=romeo&server=example.net&pass=iheartjuliet
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83 ```
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84
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85 # Compatibility
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86
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87 Requires Prosody 0.11.0 or later.