Fri, 30 Mar 2012 03:57:03 +0100
verse: Remove some, erm, debug logging
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
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1 | -- Verse XMPP Library |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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2 | -- Copyright (C) 2010 Hubert Chathi <hubert@uhoreg.ca> |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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3 | -- Copyright (C) 2010 Matthew Wild <mwild1@gmail.com> |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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4 | -- |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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5 | -- This project is MIT/X11 licensed. Please see the |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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6 | -- COPYING file in the source package for more information. |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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7 | -- |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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8 | |
250 | 9 | local verse = require "verse"; |
10 | local b64 = require("mime").b64; | |
11 | local sha1 = require("util.sha1").sha1; | |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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12 | |
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13 | local xmlns_caps = "http://jabber.org/protocol/caps"; |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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14 | local xmlns_disco = "http://jabber.org/protocol/disco"; |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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15 | local xmlns_disco_info = xmlns_disco.."#info"; |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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16 | local xmlns_disco_items = xmlns_disco.."#items"; |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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17 | |
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18 | function verse.plugins.disco(stream) |
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19 | stream:add_plugin("presence"); |
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20 | local disco_info_mt = { |
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21 | __index = function(t, k) |
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22 | local node = { identities = {}, features = {} }; |
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23 | if k == "identities" or k == "features" then |
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24 | return t[false][k] |
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25 | end |
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26 | t[k] = node; |
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27 | return node; |
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28 | end, |
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29 | }; |
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30 | local disco_items_mt = { |
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31 | __index = function(t, k) |
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32 | local node = { }; |
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33 | t[k] = node; |
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34 | return node; |
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35 | end, |
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36 | }; |
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37 | stream.disco = { |
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38 | cache = {}, |
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39 | info = setmetatable({ |
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40 | [false] = { |
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41 | identities = { |
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42 | {category = 'client', type='pc', name='Verse'}, |
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43 | }, |
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44 | features = { |
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45 | [xmlns_caps] = true, |
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46 | [xmlns_disco_info] = true, |
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47 | [xmlns_disco_items] = true, |
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48 | }, |
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49 | }, |
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50 | }, disco_info_mt); |
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51 | items = setmetatable({[false]={}}, disco_items_mt); |
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52 | }; |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
parents:
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53 | |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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54 | stream.caps = {} |
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55 | stream.caps.node = 'http://code.matthewwild.co.uk/verse/' |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
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56 | |
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57 | local function cmp_identity(item1, item2) |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
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58 | if item1.category < item2.category then |
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59 | return true; |
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60 | elseif item2.category < item1.category then |
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61 | return false; |
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62 | end |
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63 | if item1.type < item2.type then |
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64 | return true; |
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65 | elseif item2.type < item1.type then |
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Matthew Wild <mwild1@gmail.com>
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66 | return false; |
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67 | end |
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68 | if (not item1['xml:lang'] and item2['xml:lang']) or |
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69 | (item2['xml:lang'] and item1['xml:lang'] < item2['xml:lang']) then |
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70 | return true |
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71 | end |
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72 | return false |
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73 | end |
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74 | |
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75 | local function cmp_feature(item1, item2) |
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76 | return item1.var < item2.var |
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77 | end |
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78 | |
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79 | local function calculate_hash(node) |
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80 | local identities = stream.disco.info[node or false].identities; |
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81 | table.sort(identities, cmp_identity) |
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82 | local features = {}; |
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83 | for var in pairs(stream.disco.info[node or false].features) do |
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84 | features[#features+1] = { var = var }; |
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85 | end |
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86 | table.sort(features, cmp_feature) |
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87 | local S = {}; |
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88 | for key,identity in pairs(identities) do |
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89 | S[#S+1] = table.concat({ |
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90 | identity.category, identity.type or '', |
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91 | identity['xml:lang'] or '', identity.name or '' |
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92 | }, '/'); |
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93 | end |
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94 | for key,feature in pairs(features) do |
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95 | S[#S+1] = feature.var |
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96 | end |
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97 | S[#S+1] = ''; |
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98 | S = table.concat(S,'<'); |
99
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99 | -- FIXME: make sure S is utf8-encoded |
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100 | --stream:debug("Computed hash string: "..S); |
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101 | --stream:debug("Computed hash string (sha1): "..sha1(S, true)); |
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102 | --stream:debug("Computed hash string (sha1+b64): "..b64(sha1(S))); |
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103 | return (b64(sha1(S))) |
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104 | end |
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105 | |
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106 | setmetatable(stream.caps, { |
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107 | __call = function (...) -- vararg: allow calling as function or member |
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108 | -- retrieve the c stanza to insert into the |
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109 | -- presence stanza |
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110 | local hash = calculate_hash() |
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111 | stream.caps.hash = hash; |
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112 | -- TODO proper caching.... some day |
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113 | return verse.stanza('c', { |
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114 | xmlns = xmlns_caps, |
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115 | hash = 'sha-1', |
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116 | node = stream.caps.node, |
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117 | ver = hash |
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118 | }) |
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119 | end |
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120 | }) |
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121 | |
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122 | function stream:set_identity(identity, node) |
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123 | self.disco.info[node or false].identities = { identity }; |
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124 | stream:resend_presence(); |
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125 | end |
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126 | |
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127 | function stream:add_identity(identity, node) |
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128 | local identities = self.disco.info[node or false].identities; |
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129 | identities[#identities + 1] = identity; |
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130 | stream:resend_presence(); |
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131 | end |
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132 | |
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133 | function stream:add_disco_feature(feature, node) |
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134 | local feature = feature.var or feature; |
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135 | self.disco.info[node or false].features[feature] = true; |
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136 | stream:resend_presence(); |
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137 | end |
113
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138 | |
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139 | function stream:remove_disco_feature(feature, node) |
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140 | local feature = feature.var or feature; |
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141 | self.disco.info[node or false].features[feature] = nil; |
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142 | stream:resend_presence(); |
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143 | end |
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144 | |
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145 | function stream:add_disco_item(item, node) |
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146 | local items = self.disco.items[node or false]; |
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147 | items[#items +1] = item; |
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148 | end |
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149 | |
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150 | function stream:remove_disco_item(item, node) |
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151 | local items = self.disco.items[node or false]; |
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152 | for i=#items,1,-1 do |
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153 | if items[i] == item then |
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154 | table.remove(items, i); |
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155 | end |
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156 | end |
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157 | end |
99
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158 | |
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159 | -- TODO Node? |
99
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160 | function stream:jid_has_identity(jid, category, type) |
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161 | local cached_disco = self.disco.cache[jid]; |
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162 | if not cached_disco then |
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163 | return nil, "no-cache"; |
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164 | end |
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165 | local identities = self.disco.cache[jid].identities; |
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166 | if type then |
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167 | return identities[category.."/"..type] or false; |
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168 | end |
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169 | -- Check whether we have any identities with this category instead |
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170 | for identity in pairs(identities) do |
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171 | if identity:match("^(.*)/") == category then |
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172 | return true; |
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173 | end |
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174 | end |
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175 | end |
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176 | |
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177 | function stream:jid_supports(jid, feature) |
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178 | local cached_disco = self.disco.cache[jid]; |
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179 | if not cached_disco or not cached_disco.features then |
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180 | return nil, "no-cache"; |
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181 | end |
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182 | return cached_disco.features[feature] or false; |
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183 | end |
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184 | |
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185 | function stream:get_local_services(category, type) |
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186 | local host_disco = self.disco.cache[self.host]; |
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187 | if not(host_disco) or not(host_disco.items) then |
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188 | return nil, "no-cache"; |
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189 | end |
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190 | |
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191 | local results = {}; |
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192 | for _, service in ipairs(host_disco.items) do |
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193 | if self:jid_has_identity(service.jid, category, type) then |
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194 | table.insert(results, service.jid); |
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195 | end |
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196 | end |
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197 | return results; |
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198 | end |
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199 | |
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200 | function stream:disco_local_services(callback) |
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201 | self:disco_items(self.host, nil, function (items) |
172
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202 | if not items then |
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203 | return callback({}); |
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204 | end |
99
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205 | local n_items = 0; |
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206 | local function item_callback() |
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207 | n_items = n_items - 1; |
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208 | if n_items == 0 then |
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209 | return callback(items); |
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210 | end |
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211 | end |
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212 | |
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213 | for _, item in ipairs(items) do |
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214 | if item.jid then |
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215 | n_items = n_items + 1; |
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216 | self:disco_info(item.jid, nil, item_callback); |
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217 | end |
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218 | end |
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219 | if n_items == 0 then |
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220 | return callback(items); |
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221 | end |
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222 | end); |
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223 | end |
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224 | |
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225 | function stream:disco_info(jid, node, callback) |
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226 | local disco_request = verse.iq({ to = jid, type = "get" }) |
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227 | :tag("query", { xmlns = xmlns_disco_info, node = node }); |
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228 | self:send_iq(disco_request, function (result) |
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229 | if result.attr.type == "error" then |
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230 | return callback(nil, result:get_error()); |
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231 | end |
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232 | |
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233 | local identities, features = {}, {}; |
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234 | |
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235 | for tag in result:get_child("query", xmlns_disco_info):childtags() do |
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236 | if tag.name == "identity" then |
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237 | identities[tag.attr.category.."/"..tag.attr.type] = tag.attr.name or true; |
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238 | elseif tag.name == "feature" then |
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239 | features[tag.attr.var] = true; |
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240 | end |
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241 | end |
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242 | |
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243 | |
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244 | if not self.disco.cache[jid] then |
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245 | self.disco.cache[jid] = { nodes = {} }; |
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246 | end |
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247 | |
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248 | if node then |
119
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249 | if not self.disco.cache[jid].nodes[node] then |
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250 | self.disco.cache[jid].nodes[node] = { nodes = {} }; |
99
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251 | end |
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252 | self.disco.cache[jid].nodes[node].identities = identities; |
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253 | self.disco.cache[jid].nodes[node].features = features; |
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254 | else |
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255 | self.disco.cache[jid].identities = identities; |
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256 | self.disco.cache[jid].features = features; |
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257 | end |
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258 | return callback(self.disco.cache[jid]); |
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259 | end); |
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260 | end |
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261 | |
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262 | function stream:disco_items(jid, node, callback) |
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263 | local disco_request = verse.iq({ to = jid, type = "get" }) |
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264 | :tag("query", { xmlns = xmlns_disco_items, node = node }); |
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265 | self:send_iq(disco_request, function (result) |
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266 | if result.attr.type == "error" then |
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267 | return callback(nil, result:get_error()); |
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268 | end |
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269 | local disco_items = { }; |
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270 | for tag in result:get_child("query", xmlns_disco_items):childtags() do |
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271 | if tag.name == "item" then |
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272 | table.insert(disco_items, { |
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273 | name = tag.attr.name; |
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274 | jid = tag.attr.jid; |
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275 | node = tag.attr.node; |
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276 | }); |
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277 | end |
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278 | end |
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279 | |
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280 | if not self.disco.cache[jid] then |
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281 | self.disco.cache[jid] = { nodes = {} }; |
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282 | end |
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283 | |
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284 | if node then |
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285 | if not self.disco.cache[jid].nodes[node] then |
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286 | self.disco.cache[jid].nodes[node] = { nodes = {} }; |
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287 | end |
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288 | self.disco.cache[jid].nodes[node].items = disco_items; |
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289 | else |
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290 | self.disco.cache[jid].items = disco_items; |
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291 | end |
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292 | return callback(disco_items); |
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293 | end); |
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294 | end |
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295 | |
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296 | stream:hook("iq/"..xmlns_disco_info, function (stanza) |
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297 | local query = stanza.tags[1]; |
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298 | if stanza.attr.type == 'get' and query.name == "query" then |
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299 | local query_node = query.attr.node; |
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300 | local node = stream.disco.info[query_node or false]; |
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301 | if query_node and query_node == stream.caps.node .. "#" .. stream.caps.hash then |
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302 | node = stream.disco.info[false]; |
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303 | end |
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304 | local identities, features = node.identities, node.features |
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305 | |
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306 | -- construct the response |
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307 | local result = verse.reply(stanza):tag("query", { |
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308 | xmlns = xmlns_disco_info, |
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309 | node = query_node, |
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310 | }); |
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311 | for _,identity in pairs(identities) do |
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312 | result:tag('identity', identity):up() |
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313 | end |
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314 | for feature in pairs(features) do |
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315 | result:tag('feature', { var = feature }):up() |
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316 | end |
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317 | stream:send(result); |
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318 | return true |
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319 | end |
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320 | end); |
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321 | |
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322 | stream:hook("iq/"..xmlns_disco_items, function (stanza) |
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323 | local query = stanza.tags[1]; |
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324 | if stanza.attr.type == 'get' and query.name == "query" then |
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325 | -- figure out what items to send |
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326 | local items = stream.disco.items[query.attr.node or false]; |
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327 | |
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328 | -- construct the response |
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329 | local result = verse.reply(stanza):tag('query',{ |
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330 | xmlns = xmlns_disco_items, |
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331 | node = query.attr.node |
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332 | }) |
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333 | for i=1,#items do |
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334 | result:tag('item', items[i]):up() |
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335 | end |
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336 | stream:send(result); |
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337 | return true |
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338 | end |
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339 | end); |
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340 | |
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341 | local initial_disco_started; |
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342 | stream:hook("ready", function () |
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343 | if initial_disco_started then return; end |
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344 | initial_disco_started = true; |
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345 | stream:disco_local_services(function (services) |
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346 | for _, service in ipairs(services) do |
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347 | local service_disco_info = stream.disco.cache[service.jid]; |
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348 | if service_disco_info then |
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349 | for identity in pairs(service_disco_info.identities) do |
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350 | local category, type = identity:match("^(.*)/(.*)$"); |
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351 | stream:event("disco/service-discovered/"..category, { |
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352 | type = type, jid = service.jid; |
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353 | }); |
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354 | end |
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355 | end |
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356 | end |
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357 | stream:event("ready"); |
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358 | end); |
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359 | return true; |
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360 | end, 50); |
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361 | |
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362 | stream:hook("presence-out", function (presence) |
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363 | if not presence:get_child("c", xmlns_caps) then |
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364 | presence:reset():add_child(stream:caps()):reset(); |
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365 | end |
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366 | end, 10); |
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verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
367 | end |
0f5a8d530fcd
verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
368 | |
0f5a8d530fcd
verse.plugins.disco: Add disco plugin originally developed by Hubert Chathi for Riddim, but here adapted for Verse with new APIs added to allow disco'ing the local server and remote entities
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
369 | -- end of disco.lua |