prosody-modules
241c061bb953
mod_delegation/mod_delegation.lua

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mod_delegation/mod_delegation.lua @ 1715:241c061bb953

mod_delegation: we don't forward stanzas from managing entity itself
author Goffi <goffi@goffi.org>
date Fri, 17 Apr 2015 21:22:35 +0200
parent 1714:3d83f5337a73
child 1716:29dfdfc767b4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- XEP-0355 (Namespace Delegation)
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2 -- Copyright (C) 2015 Jérôme Poisson
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3 --
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4 -- This module is MIT/X11 licensed. Please see the
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5 -- COPYING file in the source package for more information.
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6
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7 -- This module manage namespace delegation, a way to delegate server features
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8 -- to an external entity/component. Only the admin mode is implemented so far
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9
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10 -- TODO: client mode, managing entity error handling, disco extensions (XEP-0128)
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11
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12 local jid = require("util/jid")
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13 local st = require("util/stanza")
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14 local set = require("util/set")
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15
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16 local delegation_session = module:shared("/*/delegation/session")
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17
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18 if delegation_session.connected_cb == nil then
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19 -- set used to have connected event listeners
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20 -- which allow a host to react on events from
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21 -- other hosts
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22 delegation_session.connected_cb = set.new()
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23 end
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24 local connected_cb = delegation_session.connected_cb
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25
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26 local _DELEGATION_NS = 'urn:xmpp:delegation:1'
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27 local _FORWARDED_NS = 'urn:xmpp:forward:0'
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28 local _DISCO_NS = 'http://jabber.org/protocol/disco#info'
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29 local _ORI_ID_PREFIX = "IQ_RESULT_"
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30
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31 local _MAIN_SEP = '::'
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32 local _BARE_SEP = ':bare:'
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33 local _MAIN_PREFIX = _DELEGATION_NS.._MAIN_SEP
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34 local _BARE_PREFIX = _DELEGATION_NS.._BARE_SEP
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35 local _PREFIXES = {_MAIN_PREFIX, _BARE_PREFIX}
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36
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37 local disco_nest
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38
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39 module:log("debug", "Loading namespace delegation module ");
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40
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41 --> Configuration management <--
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42
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43 local ns_delegations = module:get_option("delegations", {})
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44
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45 local jid2ns = {}
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46 for namespace, ns_data in pairs(ns_delegations) do
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47 -- "connected" contain the full jid of connected managing entity
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48 ns_data.connected = nil
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49 if ns_data.jid then
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50 if jid2ns[ns_data.jid] == nil then
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51 jid2ns[ns_data.jid] = {}
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52 end
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53 jid2ns[ns_data.jid][namespace] = ns_data
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54 module:log("debug", "Namespace %s is delegated%s to %s", namespace, ns_data.filtering and " (with filtering)" or "", ns_data.jid)
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55 else
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56 module:log("warn", "Ignoring delegation for %s: no jid specified", tostring(namespace))
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57 ns_delegations[namespace] = nil
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58 end
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59 end
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60
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61
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62 local function advertise_delegations(session, to_jid)
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63 -- send <message/> stanza to advertise delegations
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64 -- as expained in § 4.2
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65 local message = st.message({from=module.host, to=to_jid})
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66 :tag("delegation", {xmlns=_DELEGATION_NS})
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67
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68 -- we need to check if a delegation is granted because the configuration
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69 -- can be complicated if some delegations are granted to bare jid
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70 -- and other to full jids, and several resources are connected.
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71 local have_delegation = false
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72
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73 for namespace, ns_data in pairs(jid2ns[to_jid]) do
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74 if ns_data.connected == to_jid then
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75 have_delegation = true
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76 message:tag("delegated", {namespace=namespace})
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77 if type(ns_data.filtering) == "table" then
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78 for _, attribute in pairs(ns_data.filtering) do
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79 message:tag("attribute", {name=attribute}):up()
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80 end
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81 message:up()
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82 end
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83 end
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84 end
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85
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86 if have_delegation then
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87 session.send(message)
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88 end
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89 end
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90
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91 local function set_connected(entity_jid)
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92 -- set the "connected" key for all namespace managed by entity_jid
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93 -- if the namespace has already a connected entity, ignore the new one
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94 local function set_config(jid_)
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95 for namespace, ns_data in pairs(jid2ns[jid_]) do
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96 if ns_data.connected == nil then
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97 ns_data.connected = entity_jid
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98 disco_nest(namespace, entity_jid)
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99 end
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100 end
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101 end
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102 local bare_jid = jid.bare(entity_jid)
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103 set_config(bare_jid)
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104 -- We can have a bare jid of a full jid specified in configuration
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105 -- so we try our luck with both (first connected resource will
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106 -- manage the namespaces in case of bare jid)
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107 if bare_jid ~= entity_jid then
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108 set_config(entity_jid)
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109 jid2ns[entity_jid] = jid2ns[bare_jid]
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110 end
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111 end
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112
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113 local function on_presence(event)
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114 local session = event.origin
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115 local bare_jid = jid.bare(session.full_jid)
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116
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117 if jid2ns[bare_jid] or jid2ns[session.full_jid] then
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118 set_connected(session.full_jid)
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119 advertise_delegations(session, session.full_jid)
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120 end
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parents:
diff changeset
121 end
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parents:
diff changeset
122
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Goffi <goffi@goffi.org>
parents:
diff changeset
123 local function on_component_connected(event)
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parents:
diff changeset
124 -- method called by the module loaded by the component
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parents:
diff changeset
125 -- /!\ the event come from the component host,
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Goffi <goffi@goffi.org>
parents:
diff changeset
126 -- not from the host of this module
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127 local session = event.session
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Goffi <goffi@goffi.org>
parents:
diff changeset
128 local bare_jid = jid.join(session.username, session.host)
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Goffi <goffi@goffi.org>
parents:
diff changeset
129
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Goffi <goffi@goffi.org>
parents:
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130 local jid_delegations = jid2ns[bare_jid]
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Goffi <goffi@goffi.org>
parents:
diff changeset
131 if jid_delegations ~= nil then
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Goffi <goffi@goffi.org>
parents:
diff changeset
132 set_connected(bare_jid)
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Goffi <goffi@goffi.org>
parents:
diff changeset
133 advertise_delegations(session, bare_jid)
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parents:
diff changeset
134 end
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parents:
diff changeset
135 end
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Goffi <goffi@goffi.org>
parents:
diff changeset
136
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Goffi <goffi@goffi.org>
parents:
diff changeset
137 local function on_component_auth(event)
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Goffi <goffi@goffi.org>
parents:
diff changeset
138 -- react to component-authenticated event from this host
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parents:
diff changeset
139 -- and call the on_connected methods from all other hosts
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parents:
diff changeset
140 -- needed for the component to get delegations advertising
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Goffi <goffi@goffi.org>
parents:
diff changeset
141 for callback in connected_cb:items() do
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Goffi <goffi@goffi.org>
parents:
diff changeset
142 callback(event)
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parents:
diff changeset
143 end
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parents:
diff changeset
144 end
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parents:
diff changeset
145
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Goffi <goffi@goffi.org>
parents:
diff changeset
146 connected_cb:add(on_component_connected)
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Goffi <goffi@goffi.org>
parents:
diff changeset
147 module:hook('component-authenticated', on_component_auth)
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diff changeset
148 module:hook('presence/initial', on_presence)
1710
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149
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150
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parents: 1709
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151 --> delegated namespaces hook <--
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152
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153 local function managing_ent_result(event)
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154 -- this function manage iq results from the managing entity
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Goffi <goffi@goffi.org>
parents: 1709
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155 -- it do a couple of security check before sending the
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parents: 1709
diff changeset
156 -- result to the managed entity
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157 local session, stanza = event.origin, event.stanza
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Goffi <goffi@goffi.org>
parents: 1709
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158 if stanza.attr.to ~= module.host then
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
159 module:log("warn", 'forwarded stanza result has "to" attribute not addressed to current host, id conflict ?')
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diff changeset
160 return
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
161 end
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
162 module:unhook("iq-result/host/"..stanza.attr.id, managing_ent_result)
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parents: 1709
diff changeset
163
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
164 -- lot of checks to do...
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Goffi <goffi@goffi.org>
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165 local delegation = stanza.tags[1]
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
166 if #stanza ~= 1 or delegation.name ~= "delegation" or
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
167 delegation.attr.xmlns ~= _DELEGATION_NS then
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
168 session.send(st.error_reply(stanza, 'modify', 'not-acceptable'))
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parents: 1709
diff changeset
169 return true
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Goffi <goffi@goffi.org>
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diff changeset
170 end
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parents: 1709
diff changeset
171
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Goffi <goffi@goffi.org>
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diff changeset
172 local forwarded = delegation.tags[1]
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
173 if #delegation ~= 1 or forwarded.name ~= "forwarded" or
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
174 forwarded.attr.xmlns ~= _FORWARDED_NS then
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
175 session.send(st.error_reply(stanza, 'modify', 'not-acceptable'))
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
176 return true
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
177 end
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
178
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
179 local iq = forwarded.tags[1]
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
180 if #forwarded ~= 1 or iq.name ~= "iq" or #iq ~= 1 then
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
181 session.send(st.error_reply(stanza, 'modify', 'not-acceptable'))
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
182 return true
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
183 end
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
184
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
185 local namespace = iq.tags[1].xmlns
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Goffi <goffi@goffi.org>
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diff changeset
186 local ns_data = ns_delegations[namespace]
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Goffi <goffi@goffi.org>
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diff changeset
187 local original = ns_data[_ORI_ID_PREFIX..stanza.attr.id]
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parents: 1709
diff changeset
188
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
189 if stanza.attr.from ~= ns_data.connected or iq.attr.type ~= "result" or
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
190 iq.attr.id ~= original.attr.id or iq.attr.to ~= original.attr.from then
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
191 session.send(st.error_reply(stanza, 'auth', 'forbidden'))
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
192 module:send(st.error_reply(original, 'cancel', 'service-unavailable'))
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
193 return true
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
194 end
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
195
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
196 -- at this point eveything is checked,
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
197 -- and we (hopefully) can send the the result safely
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
198 module:send(iq)
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
199 end
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
200
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
201 local function forward_iq(stanza, ns_data)
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
202 local to_jid = ns_data.connected
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
203 local iq_stanza = st.iq({ from=module.host, to=to_jid, type="set" })
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
204 :tag("delegation", { xmlns=_DELEGATION_NS })
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
205 :tag("forwarded", { xmlns=_FORWARDED_NS })
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
206 :add_child(stanza)
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
207 local iq_id = iq_stanza.attr.id
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
208 -- we save the original stanza to check the managing entity result
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
209 ns_data[_ORI_ID_PREFIX..iq_id] = stanza
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Goffi <goffi@goffi.org>
parents: 1709
diff changeset
210 module:hook("iq-result/host/"..iq_id, managing_ent_result)
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
211 module:send(iq_stanza)
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
212 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
213
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
214 local function iq_hook(event)
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
215 -- general hook for all the iq which forward delegated ones
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
216 -- and continue normal behaviour else. If a namespace is
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
217 -- delegated but managing entity is offline, a service-unavailable
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
218 -- error will be sent, as requested by the XEP
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
219 local session, stanza = event.origin, event.stanza
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
220 if #stanza == 1 and stanza.attr.type == 'get' or stanza.attr.type == 'set' then
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
221 local namespace = stanza.tags[1].attr.xmlns
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
222 local ns_data = ns_delegations[namespace]
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
223
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
224 if ns_data then
1715
241c061bb953 mod_delegation: we don't forward stanzas from managing entity itself
Goffi <goffi@goffi.org>
parents: 1714
diff changeset
225 if stanza.attr.from == ns_data.connected then
241c061bb953 mod_delegation: we don't forward stanzas from managing entity itself
Goffi <goffi@goffi.org>
parents: 1714
diff changeset
226 -- we don't forward stanzas from managing entity itself
241c061bb953 mod_delegation: we don't forward stanzas from managing entity itself
Goffi <goffi@goffi.org>
parents: 1714
diff changeset
227 return
241c061bb953 mod_delegation: we don't forward stanzas from managing entity itself
Goffi <goffi@goffi.org>
parents: 1714
diff changeset
228 end
1710
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
229 if ns_data.filtering then
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
230 local first_child = stanza.tags[1]
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
231 for _, attribute in ns_data.filtering do
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
232 -- if any filtered attribute if not present,
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
233 -- we must continue the normal bahaviour
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
234 if not first_child.attr[attribute] then
1711
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
235 -- Filtered attribute is not present, we do normal workflow
1710
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
236 return;
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
237 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
238 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
239 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
240 if not ns_data.connected then
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
241 module:log("warn", "No connected entity to manage "..namespace)
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
242 session.send(st.error_reply(stanza, 'cancel', 'service-unavailable'))
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
243 else
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
244 forward_iq(stanza, ns_data)
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
245 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
246 return true
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
247 else
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
248 -- we have no delegation, we continue normal behaviour
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
249 return
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
250 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
251 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
252 end
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
253
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
254 module:hook("iq/self", iq_hook, 2^32)
b68eed25b880 mod_delegation: iq forwarding to managing entity
Goffi <goffi@goffi.org>
parents: 1709
diff changeset
255 module:hook("iq/host", iq_hook, 2^32)
1711
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
256
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
257
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
258 --> discovery nesting <--
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
259
1712
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Goffi <goffi@goffi.org>
parents: 1711
diff changeset
260 -- disabling internal features/identities
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
261
1711
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
262 -- modules whose features/identities are managed by delegation
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
263 local disabled_modules = set.new()
1713
01e9465f8f80 mod_delegation: delegated features/identities removal for disco info requests on bare jid
Goffi <goffi@goffi.org>
parents: 1712
diff changeset
264 local disabled_identities = set.new()
1711
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
265
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
266 local function identity_added(event)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
267 local source = event.source
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
268 if disabled_modules:contains(source) then
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
269 local item = event.item
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
270 local category, type_, name = item.category, item.type, item.name
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
271 module:log("debug", "Removing (%s/%s%s) identity because of delegation", category, type_, name and "/"..name or "")
1713
01e9465f8f80 mod_delegation: delegated features/identities removal for disco info requests on bare jid
Goffi <goffi@goffi.org>
parents: 1712
diff changeset
272 disabled_identities:add(item)
1711
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
273 source:remove_item("identity", item)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
274 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
275 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
276
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
277 local function feature_added(event)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
278 local source, item = event.source, event.item
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
279 for namespace, _ in pairs(ns_delegations) do
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
280 if source ~= module and string.sub(item, 1, #namespace) == namespace then
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
281 module:log("debug", "Removing %s feature which is delegated", item)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
282 source:remove_item("feature", item)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
283 disabled_modules:add(source)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
284 if source.items and source.items.identity then
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
285 -- we remove all identities added by the source module
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
286 -- that can cause issues if the module manages several features/identities
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
287 -- but this case is probably rare (or doesn't happen at all)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
288 -- FIXME: any better way ?
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
289 for _, identity in pairs(source.items.identity) do
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
290 identity_added({source=source, item=identity})
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
291 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
292 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
293 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
294 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
295 end
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
296
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
297 -- for disco nesting (see § 7.2) we need to remove internal features
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
298 -- we use handle_items as it allow to remove already added features
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
299 -- and catch the ones which can come later
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
300 module:handle_items("feature", feature_added, function(_) end)
55b9ac807ac9 mod_delegation: delegated features/identities are removed from disco.
Goffi <goffi@goffi.org>
parents: 1710
diff changeset
301 module:handle_items("identity", identity_added, function(_) end, false)
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
302
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
303
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
304 -- managing entity features/identities collection
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
305
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
306 local disco_error
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
307 local bare_features = set.new()
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
308 local bare_identities = {}
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
309
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
310 local function disco_result(event)
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
311 -- parse result from disco nesting request
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
312 -- and fill module features/identities and bare_features/bare_identities accordingly
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
313 local session, stanza = event.origin, event.stanza
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
314 if stanza.attr.to ~= module.host then
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
315 module:log("warn", 'Stanza result has "to" attribute not addressed to current host, id conflict ?')
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
316 return
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
317 end
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
318 module:unhook("iq-result/host/"..stanza.attr.id, disco_result)
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
319 module:unhook("iq-error/host/"..stanza.attr.id, disco_error)
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
320 local query = stanza:get_child("query", _DISCO_NS)
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
321 if not query or not query.attr.node then
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
322 session.send(st.error_reply(stanza, 'modify', 'not-acceptable'))
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
323 return true
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
324 end
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
325
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
326 local node = query.attr.node
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
327 local main
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
328
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
329 if string.sub(node, 1, #_MAIN_PREFIX) == _MAIN_PREFIX then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
330 main=true
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
331 elseif string.sub(node, 1, #_BARE_PREFIX) == _BARE_PREFIX then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
332 main=false
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
333 else
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
334 module:log("warn", "Unexpected node: "..node)
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
335 session.send(st.error_reply(stanza, 'modify', 'not-acceptable'))
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
336 return true
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
337 end
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
338
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
339 for feature in query:childtags("feature") do
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
340 local namespace = feature.attr.var
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
341 if main then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
342 if not module:has_feature(namespace) then -- we avoid doubling features in case of disconnection/reconnexion
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
343 module:add_feature(namespace)
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
344 end
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
345 else
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
346 bare_features:add(namespace)
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
347 end
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
348 end
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
349 for identity in query:childtags("identity") do
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
350 local category, type_, name = identity.attr.category, identity.attr.type, identity.attr.name
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
351 if main then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
352 if not module:has_identity(category, type_, name) then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
353 module:add_identity(category, type_, name)
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
354 end
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
355 else
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
356 local found=false
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
357 for _, item in ipairs(bare_identities) do
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
358 if item.category == category and item.type == type_ and item.name == name then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
359 found=true
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
360 break
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
361 end
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
362 end
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
363 if not found then
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
364 table.insert(bare_identities, {category=category, type=type_, name=name})
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
365 end
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
366 end
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
367 end
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
368 end
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
369
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
370 function disco_error(event)
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
371 local stanza = event.stanza
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
372 if stanza.attr.to ~= module.host then
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
373 module:log("warn", 'Stanza result has "to" attribute not addressed to current host, id conflict ?')
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
374 return
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
375 end
1714
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
376 module:unhook("iq-result/host/"..stanza.attr.id, disco_result)
3d83f5337a73 mod_delegation: disco info request on bare jid is now managed
Goffi <goffi@goffi.org>
parents: 1713
diff changeset
377 module:unhook("iq-error/host/"..stanza.attr.id, disco_error)
1712
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
378 module:log("warn", "Got an error while requesting disco for nesting to "..stanza.attr.from)
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
379 module:log("warn", "Ignoring disco nesting")
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
380 end
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
381
c1973605d096 mod_delegation: disco nesting for host
Goffi <goffi@goffi.org>
parents: 1711
diff changeset
382 function disco_nest(namespace, entity_jid)
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383 for _, prefix in ipairs(_PREFIXES) do
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384 local node = prefix..namespace
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385
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386 local iq = st.iq({from=module.host, to=entity_jid, type='get'})
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387 :tag('query', {xmlns=_DISCO_NS, node=node})
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388
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389 local iq_id = iq.attr.id
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390
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391 module:hook("iq-result/host/"..iq_id, disco_result)
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392 module:hook("iq-error/host/"..iq_id, disco_error)
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393 module:send(iq)
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394 end
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395 end
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396
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397 -- disco to bare jids special case
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398
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399 module:hook("account-disco-info", function(event)
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400 -- this event is called when a disco info request is done on a bare jid
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401 -- we get the final reply and filter delegated features/identities
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402 local reply = event.reply;
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403 reply.tags[1]:maptags(function(child)
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404 if child.name == 'feature' then
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405 local feature_ns = child.attr.var
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406 for namespace, _ in pairs(ns_delegations) do
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407 if string.sub(feature_ns, 1, #namespace) == namespace then
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408 module:log("debug", "Removing feature namespace %s which is delegated", feature_ns)
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409 return nil
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410 end
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411 end
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412 elseif child.name == 'identity' then
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413 for item in disabled_identities:items() do
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414 if item.category == child.attr.category
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415 and item.type == child.attr.type
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416 -- we don't check name, because mod_pep use a name for main disco, but not in account-disco-info hook
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parents: 1712
diff changeset
417 -- and item.name == child.attr.name
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418 then
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419 module:log("debug", "Removing (%s/%s%s) identity because of delegation", item.category, item.type, item.name and "/"..item.name or "")
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420 return nil
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421 end
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422 end
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423 end
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424 return child
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425 end)
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diff changeset
426 for feature in bare_features:items() do
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Goffi <goffi@goffi.org>
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diff changeset
427 reply:tag('feature', {var=feature}):up();
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parents: 1713
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428 end
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429 for _, item in ipairs(bare_identities) do
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parents: 1713
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430 reply:tag('identity', {category=item.category, type=item.type, name=item.name}):up();
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431 end
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diff changeset
432
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parents: 1712
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433 end, -2^32);