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mod_delegation/README.markdown

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mod_delegation/README.markdown @ 1845:ad24f8993385

mod_tls_policy/README: Fix summary so modules.prosody.im understands it
author Kim Alvefur <zash@zash.se>
date Sun, 13 Sep 2015 15:46:21 +0200
parent 1803:4d73a1a6ba68
child 1993:66aaf7c3cb29
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1 ---
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2 labels:
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3 - 'Stage-Alpha'
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4 summary: 'XEP-0355 (Namespace Delegation) implementation'
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5 ...
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6
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7 Introduction
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8 ============
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9
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10 Namespace Delegation is an extension which allows server to delegate
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11 some features handling to an entity/component. Typical use case is an
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12 external PEP service, but it can be used more generally when your
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13 prefered server lack one internal feature and you found an external
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14 component which can do it.
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15
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16 Details
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17 =======
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18
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19 You can have all the details by reading the
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20 [XEP-0355](http://xmpp.org/extensions/xep-0355.html). Only the admin
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21 mode is implemented so far.
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22
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23 If you use it with a component, you need to patch
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24 core/mod\_component.lua to fire a new signal. To do it, copy the
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25 following patch in a, for example, /tmp/component.patch file:
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26
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27 diff --git a/plugins/mod_component.lua b/plugins/mod_component.lua
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28 --- a/plugins/mod_component.lua
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29 +++ b/plugins/mod_component.lua
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30 @@ -85,6 +85,7 @@
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31 session.type = "component";
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32 module:log("info", "External component successfully authenticated");
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33 session.send(st.stanza("handshake"));
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34 + module:fire_event("component-authenticated", { session = session });
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35
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36 return true;
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37 end
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38
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39 Then, at the root of prosody, enter:
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40
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41 `patch -p1 < /tmp/component.patch`
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42
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43 Usage
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44 =====
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45
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46 To use the module, like usual add **"delegation"** to your
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47 modules\_enabled. Note that if you use it with a local component, you
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48 also need to activate the module in your component section:
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49
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50 modules_enabled = {
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51 [...]
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52
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53 "delegation";
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54 }
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55
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56 [...]
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57
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58 Component "youcomponent.yourdomain.tld"
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59 component_secret = "yourpassword"
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60 modules_enabled = {"delegation"}
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61
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62 then specify delegated namespaces **in your host section** like that:
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63
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64 VirtualHost "yourdomain.tld"
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65
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66 delegations = {
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67 ["urn:xmpp:mam:0"] = {
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68 filtering = {"node"};
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69 jid = "pubsub.yourdomain.tld";
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70 },
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71 ["http://jabber.org/protocol/pubsub"] = {
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72 jid = "pubsub.yourdomain.tld";
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73 },
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74 }
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75
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76 Here all MAM requests with a "node" attribute (i.e. all MAM pubsub
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77 request) will be delegated to pubsub.yourdomain.tld. Similarly, all
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78 pubsub request to the host (i.e. the PEP requests) will be delegated to
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79 pubsub.yourdomain.tld.
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80
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81 **/! Be extra careful when you give a delegation to an entity/component,
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82 it's a powerful access, only do it if you absoly trust the
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83 component/entity, and you know where the software is coming from**
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84
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85 Configuration
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86 =============
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87
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88 The configuration is done with a table which map delegated namespace to
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89 namespace data. Namespace data MUST have a **jid** (in the form **jid =
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90 "delegated@domain.tld"**) and MAY have an additional **filtering**
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91 array. If filtering is present, request with attributes in the array
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92 will be delegated, other will be treated normally (i.e. by Prosody).
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93
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94 If your are not a developper, the delegated namespace(s)/attribute(s)
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95 are most probably specified with the external component/entity you want
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96 to use.
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97
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98 Compatibility
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99 =============
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100
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101 ----- ----------------------------------------------------
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102 dev Need a patched core/mod\_component.lua (see above)
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103 0.9 Need a patched core/mod\_component.lua (see above)
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104 ----- ----------------------------------------------------
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105
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106 Note
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107 ====
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108
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109 This module is often used with mod\_privilege (c.f. XEP for more
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110 details)