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annotate mod_privilege/README.markdown @ 4646:072d078be095

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mod_storage_xmlarchive: Advertise capabilities (none atm) Both 'total' and 'quota' would be prohibitively expensive for the kind of archives this module targets as it would require counting items across the entire archive.
author Kim Alvefur <zash@zash.se>
date Fri, 13 Aug 2021 01:18:32 +0200
parents 8dda3d7d616f
children 3ddab718f717
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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-0356 (Privileged Entity) 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 Privileged Entity is an extension which allows entity/component to have
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11 privileged access to server (set/get roster, send message on behalf of
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12 server, access presence informations). It can be used to build services
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13 independently of server (e.g.: PEP service).
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14
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15 Details
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16 =======
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17
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18 You can have all the details by reading the
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19 [XEP-0356](http://xmpp.org/extensions/xep-0356.html).
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20
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21 Usage
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22 =====
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23
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24 To use the module, like usual add **"privilege"** to your
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25 modules\_enabled. Note that if you use it with a local component, you
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26 also need to activate the module in your component section:
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27
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28 modules_enabled = {
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29 [...]
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30
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31 "privilege";
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32 }
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34 [...]
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35
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36 Component "youcomponent.yourdomain.tld"
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37 component_secret = "yourpassword"
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38 modules_enabled = {"privilege"}
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39
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40 then specify privileged entities **in your host section** like that:
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41
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42 VirtualHost "yourdomain.tld"
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43
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44 privileged_entities = {
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45 ["romeo@montaigu.lit"] = {
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46 roster = "get";
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47 presence = "managed_entity";
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48 },
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49 ["juliet@capulet.lit"] = {
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50 roster = "both";
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51 message = "outgoing";
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52 presence = "roster";
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53 },
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54 }
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56 Here *romeo@montaigu.lit* can **get** roster of anybody on the host, and
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57 will **have presence for any user** of the host, while
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58 *juliet@capulet.lit* can **get** and **set** a roster, **send messages**
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59 on the behalf of the server, and **access presence of anybody linked to
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60 the host** (not only people on the server, but also people in rosters of
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61 users of the server).
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62
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63 **/! Be extra careful when you give a permission to an entity/component,
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64 it's a powerful access, only do it if you absoly trust the
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65 component/entity, and you know where the software is coming from**
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66
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67 Configuration
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68 =============
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69
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70 All the permissions give access to all accounts of the virtual host.
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71
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72 -------- ------------------------------------------------ ----------------------
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73 roster none *(default)* No access to rosters
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74 get Allow **read** access to rosters
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75 set Allow **write** access to rosters
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76 both Allow **read** and **write** access to rosters
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77 -------- ------------------------------------------------ ----------------------
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78
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79 message
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80 -------
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81
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82 ------------------ ------------------------------------------------------------
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83 none *(default)* Can't send message from server
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84 outgoing Allow to send message on behalf of server (from bare jids)
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85 ------------------ ------------------------------------------------------------
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86
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87 presence
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88 --------
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89
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90 ------------------ ------------------------------------------------------------------------------------------------
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91 none *(default)* Do not have extra presence information
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92 managed\_entity Receive presence stanzas (except subscriptions) from host users
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93 roster Receive all presence stanzas (except subsciptions) from host users and people in their rosters
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94 ------------------ ------------------------------------------------------------------------------------------------
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95
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96 Compatibility
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97 =============
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98
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99 If you use it with Prosody 0.9 and with a component, you need to patch
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100 core/mod\_component.lua to fire a new signal. To do it, copy the
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101 following patch in a, for example, /tmp/component.patch file:
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102
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103 ``` {.patch}
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104 diff --git a/plugins/mod_component.lua b/plugins/mod_component.lua
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105 --- a/plugins/mod_component.lua
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106 +++ b/plugins/mod_component.lua
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107 @@ -85,6 +85,7 @@
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108 session.type = "component";
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109 module:log("info", "External component successfully authenticated");
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110 session.send(st.stanza("handshake"));
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111 + module:fire_event("component-authenticated", { session = session });
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112
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113 return true;
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114 end
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115 ```
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116
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117 Then, at the root of prosody, enter:
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118
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119 `patch -p1 < /tmp/component.patch`
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120
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121 ----- ----------------------------------------------------
1992
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122 0.10 Works
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123 0.9 Need a patched core/mod\_component.lua (see above)
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124 ----- ----------------------------------------------------
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125
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126 Note
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127 ====
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128
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129 This module is often used with mod\_delegation (c.f. XEP for more
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130 details)