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mod_auth_http: Yet another module to authenticate against a HTTP service
author Matthew Wild <mwild1@gmail.com>
date Wed, 30 Sep 2020 13:20:11 +0100
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children df1e0465ff81
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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
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30
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31 ## Protocol
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32
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33 Prosody will make a HTTP request to the configured API URL with an
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34 appended `/METHOD` where `METHOD` is one of the methods described below.
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35
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36 GET methods must expect a series of URL-encoded query parameters, while
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37 POST requests will receive an URL-encoded form (i.e.
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38 `application/x-www-form-urlencoded`).
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39
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40 ## Parameters
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41
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42 user
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43 : The username, e.g. `stephanie` for the JID `stephanie@example.com`.
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44
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45 server
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46 : The host part of the user's JID, e.g. `example.com` for the JID
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47 `stephanie@example.com`.
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48
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49 pass
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50 : For methods that verify or set a user's password, the password will
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51 be supplied in this parameter, otherwise it is not set.
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52
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53 ## Methods
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54
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55 The only mandatory methods that the service must implement are `check_password`
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56 and `user_exists`. Unsupported methods should return a HTTP status code
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57 of `501 Not Implemented`, but other error codes will also be handled by
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58 Prosody.
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59
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60 ### register
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61
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62 **HTTP method:**
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63 : POST
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64
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65 **Success codes:**
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66 : 201
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67
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68 **Error codes:**
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69 : 409 (user exists)
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70
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71 ### check_password
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72
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73 **HTTP method:**
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74 : GET
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75
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76 **Success codes:**
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77 : 200
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78
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79 **Response:**
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80 : A text string of `true` if the user exists, or `false` otherwise.
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81
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82 ### user_exists
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83
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84 **HTTP method:**
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85 : GET
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86
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87 **Success codes:**
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88 : 200
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89
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90 **Response:**
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91 : A text string of `true` if the user exists, or `false` otherwise.
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92
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93 ### set_password
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94
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95 **HTTP method:**
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96 : POST
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97
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98 **Success codes:**
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99 : 200, 201, or 204
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100
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101 ### remove_user
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102
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103 **HTTP method:**
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104 : POST
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105
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106 **Success codes:**
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107 : 200, 201 or 204
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108
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109 ## Examples
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110
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111 With the following configuration:
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112
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113 ```
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114 authentication = "http"
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115 http_auth_url = "https://auth.example.net/api"
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116
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117 If a user connects and tries to log in to Prosody as "romeo@example.net"
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118 with the password "iheartjuliet", Prosody would make the following HTTP
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119 request:
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120
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121 ```
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122 https://auth.example.net/api/check_password?user=romeo&server=example.net&pass=iheartjuliet
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123 ```
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124
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125 # Compatibility
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126
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127 Requires Prosody 0.11.0 or later.