Mercurial > prosody-modules
annotate mod_auth_external/README.markdown @ 3077:f16b021e8a61
mod_vcard_muc: Get room from rooms table when get_room_from_jid API is not supported
Closes #1152
| author | Michel Le Bihan <michel@lebihan.pl> |
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| date | Wed, 30 May 2018 19:14:01 +0200 |
| parents | ea6b5321db50 |
| children | 788200f5f481 |
| rev | line source |
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1 --- |
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2 labels: |
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3 - 'Stage-Alpha' |
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4 - 'Type-Auth' |
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5 summary: 'Authentication via external script/process' |
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6 ... |
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8 Introduction |
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9 ============ |
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| 11 Allow client authentication to be handled by an external script/process. | |
| 12 | |
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13 Installation |
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14 ============ |
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16 mod\_auth\_external depends on a Lua module called |
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17 [lpty](http://www.tset.de/lpty/). You can install it on many platforms |
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18 using [LuaRocks](http://luarocks.org/), for example: |
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19 |
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20 sudo luarocks install lpty |
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22 Note: Earlier versions of the module did not depend on lpty. While using |
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23 the newer version is strongly recommended, you can find the [older |
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24 version |
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25 here](https://hg.prosody.im/prosody-modules/raw-file/50ee38e95e75/mod_auth_external/mod_auth_external.lua) |
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26 if you need it (revision of the repository). |
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28 Configuration |
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29 ============= |
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31 As with all auth modules, there is no need to add this to |
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32 modules\_enabled. Simply add in the global section, or for the relevant |
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33 hosts: |
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35 authentication = "external" |
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36 |
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37 These options are specific to mod\_auth\_external: |
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39 -------------------------- ------------------------------------------------------------------------------------------------------------------------- |
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40 external\_auth\_protocol May be "generic" or "ejabberd" (the latter for compatibility with ejabberd external auth scripts. Default is "generic". |
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41 external\_auth\_command The command/script to execute. |
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42 -------------------------- ------------------------------------------------------------------------------------------------------------------------- |
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43 |
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44 Two other options are also available, depending on whether the module is |
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45 running in 'blocking' or 'non-blocking' mode: |
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47 --------------------------- -------------- ------------------------------------------------------------------------------------------------------------------ |
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48 external\_auth\_timeout blocking The number of seconds to wait for a response from the auth process. Default is 5. |
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49 external\_auth\_processes non-blocking The number of concurrent processes to spawn. Default is 1, increase to handle high connection rates efficiently. |
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50 --------------------------- -------------- ------------------------------------------------------------------------------------------------------------------ |
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52 Blocking vs non-blocking |
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53 ------------------------ |
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| 55 Non-blocking mode is automatically activated when: | |
| 56 | |
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57 - Running Prosody trunk ([nightly](http://prosody.im/nightly/) build |
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58 414+). |
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59 - [libevent](http://prosody.im/doc/libevent) is enabled in the config, |
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60 and LuaEvent is available. |
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61 - lpty (see installation above) is version 1.0.1 or later. |
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63 Protocol |
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64 ======== |
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| 66 Prosody executes the given command/script, and sends it queries. | |
| 67 | |
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68 Your auth script should simply read a line from standard input, and |
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69 write the result to standard output. It must do this in a loop, until |
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70 there's nothing left to read. Prosody can keep sending more lines to the |
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71 script, with a command on each line. |
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73 Each command is one line, and the response is expected to be a single |
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74 line containing "0" for failure or "1" for success. Your script must |
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75 respond with "0" for anything it doesn't understand. |
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| 77 There are three commands used at the moment: | |
| 78 | |
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79 auth |
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80 ---- |
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81 |
| 1782 | 82 Check if a user's password is valid. |
| 83 | |
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84 Example: `auth:username:example.com:abc123` |
| 1782 | 85 |
| 86 Note: The password can contain colons. Make sure to handle that. | |
| 87 | |
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88 isuser |
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89 ------ |
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90 |
| 1782 | 91 Check if a user exists. |
| 92 | |
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93 Example: `isuser:username:example.com` |
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95 setpass |
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96 ------- |
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97 |
| 1782 | 98 Set a new password for the user. Implementing this is optional. |
| 99 | |
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100 Example: `setpass:username:example.com:abc123` |
| 1782 | 101 |
| 102 Note: The password can contain colons. Make sure to handle that. | |
| 103 | |
| 2876 | 104 ejabberd compatibility |
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105 --------------------- |
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106 |
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107 ejabberd implements a similar protocol. The main difference is that |
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108 Prosody's protocol is line-based, while ejabberd's is length-prefixed. |
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| 110 Add this to your config if you need to use an ejabberd auth script: | |
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111 |
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112 external_auth_protocol = "ejabberd" |
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114 Compatibility |
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115 ============= |
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116 |
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117 ----- ------- |
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118 0.8 Works |
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119 0.9 Works |
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120 ----- ------- |