prosody
e9090966c803
plugins/mod_disco.lua

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plugins/mod_disco.lua @ 5524:e9090966c803

util.prosodyctl: Initialize storagemanager on the host before initializing usermanager. This fixes brokenness when the auth provider opens the store on load (as they all do since eeea0eb2602a) (thanks nulani)
author Matthew Wild <mwild1@gmail.com>
date Sat, 27 Apr 2013 13:11:03 +0100
parent 5081:c0c060e450be
child 5627:0439d1349dc1
child 8002:57060d0cee4b
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local get_children = require "core.hostmanager".get_children;
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10 local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
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11 local jid_split = require "util.jid".split;
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12 local jid_bare = require "util.jid".bare;
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13 local st = require "util.stanza"
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14 local calculate_hash = require "util.caps".calculate_hash;
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15
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16 local disco_items = module:get_option("disco_items") or {};
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17 do -- validate disco_items
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18 for _, item in ipairs(disco_items) do
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19 local err;
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20 if type(item) ~= "table" then
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21 err = "item is not a table";
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22 elseif type(item[1]) ~= "string" then
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23 err = "item jid is not a string";
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24 elseif item[2] and type(item[2]) ~= "string" then
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25 err = "item name is not a string";
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26 end
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27 if err then
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28 module:log("error", "option disco_items is malformed: %s", err);
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29 disco_items = {}; -- TODO clean up data instead of removing it?
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30 break;
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31 end
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32 end
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33 end
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34
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35 module:add_identity("server", "im", module:get_option_string("name", "Prosody")); -- FIXME should be in the non-existing mod_router
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36 module:add_feature("http://jabber.org/protocol/disco#info");
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37 module:add_feature("http://jabber.org/protocol/disco#items");
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38
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39 -- Generate and cache disco result and caps hash
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40 local _cached_server_disco_info, _cached_server_caps_feature, _cached_server_caps_hash;
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41 local function build_server_disco_info()
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42 local query = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" });
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43 local done = {};
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44 for _,identity in ipairs(module:get_host_items("identity")) do
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45 local identity_s = identity.category.."\0"..identity.type;
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46 if not done[identity_s] then
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47 query:tag("identity", identity):up();
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48 done[identity_s] = true;
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49 end
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50 end
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51 for _,feature in ipairs(module:get_host_items("feature")) do
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52 if not done[feature] then
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53 query:tag("feature", {var=feature}):up();
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54 done[feature] = true;
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55 end
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56 end
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57 for _,extension in ipairs(module:get_host_items("extension")) do
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58 if not done[extension] then
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59 query:add_child(extension);
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60 done[extension] = true;
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61 end
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62 end
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63 _cached_server_disco_info = query;
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64 _cached_server_caps_hash = calculate_hash(query);
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65 _cached_server_caps_feature = st.stanza("c", {
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66 xmlns = "http://jabber.org/protocol/caps";
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67 hash = "sha-1";
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68 node = "http://prosody.im";
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69 ver = _cached_server_caps_hash;
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70 });
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71 end
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72 local function clear_disco_cache()
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73 _cached_server_disco_info, _cached_server_caps_feature, _cached_server_caps_hash = nil, nil, nil;
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74 end
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75 local function get_server_disco_info()
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76 if not _cached_server_disco_info then build_server_disco_info(); end
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77 return _cached_server_disco_info;
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78 end
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79 local function get_server_caps_feature()
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80 if not _cached_server_caps_feature then build_server_disco_info(); end
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81 return _cached_server_caps_feature;
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82 end
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83 local function get_server_caps_hash()
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84 if not _cached_server_caps_hash then build_server_disco_info(); end
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85 return _cached_server_caps_hash;
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86 end
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87
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88 module:hook("item-added/identity", clear_disco_cache);
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89 module:hook("item-added/feature", clear_disco_cache);
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90 module:hook("item-added/extension", clear_disco_cache);
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91 module:hook("item-removed/identity", clear_disco_cache);
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92 module:hook("item-removed/feature", clear_disco_cache);
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93 module:hook("item-removed/extension", clear_disco_cache);
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94
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95 -- Handle disco requests to the server
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96 module:hook("iq/host/http://jabber.org/protocol/disco#info:query", function(event)
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97 local origin, stanza = event.origin, event.stanza;
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98 if stanza.attr.type ~= "get" then return; end
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99 local node = stanza.tags[1].attr.node;
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100 if node and node ~= "" and node ~= "http://prosody.im#"..get_server_caps_hash() then return; end -- TODO fire event?
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101 local reply_query = get_server_disco_info();
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102 reply_query.node = node;
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103 local reply = st.reply(stanza):add_child(reply_query);
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104 origin.send(reply);
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105 return true;
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106 end);
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107 module:hook("iq/host/http://jabber.org/protocol/disco#items:query", function(event)
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108 local origin, stanza = event.origin, event.stanza;
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109 if stanza.attr.type ~= "get" then return; end
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110 local node = stanza.tags[1].attr.node;
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111 if node and node ~= "" then return; end -- TODO fire event?
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112
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113 local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#items");
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114 for jid, name in pairs(get_children(module.host)) do
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115 reply:tag("item", {jid = jid, name = name~=true and name or nil}):up();
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116 end
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117 for _, item in ipairs(disco_items) do
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118 reply:tag("item", {jid=item[1], name=item[2]}):up();
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119 end
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120 origin.send(reply);
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121 return true;
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122 end);
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123
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124 -- Handle caps stream feature
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125 module:hook("stream-features", function (event)
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126 if event.origin.type == "c2s" then
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127 event.features:add_child(get_server_caps_feature());
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128 end
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129 end);
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130
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131 -- Handle disco requests to user accounts
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132 module:hook("iq/bare/http://jabber.org/protocol/disco#info:query", function(event)
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133 local origin, stanza = event.origin, event.stanza;
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134 if stanza.attr.type ~= "get" then return; end
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135 local node = stanza.tags[1].attr.node;
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136 if node and node ~= "" then return; end -- TODO fire event?
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137 local username = jid_split(stanza.attr.to) or origin.username;
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138 if not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
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139 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#info'});
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140 if not reply.attr.from then reply.attr.from = origin.username.."@"..origin.host; end -- COMPAT To satisfy Psi when querying own account
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141 module:fire_event("account-disco-info", { origin = origin, stanza = reply });
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142 origin.send(reply);
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143 return true;
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144 end
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145 end);
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146 module:hook("iq/bare/http://jabber.org/protocol/disco#items:query", function(event)
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147 local origin, stanza = event.origin, event.stanza;
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148 if stanza.attr.type ~= "get" then return; end
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149 local node = stanza.tags[1].attr.node;
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150 if node and node ~= "" then return; end -- TODO fire event?
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151 local username = jid_split(stanza.attr.to) or origin.username;
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152 if not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
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153 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#items'});
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154 if not reply.attr.from then reply.attr.from = origin.username.."@"..origin.host; end -- COMPAT To satisfy Psi when querying own account
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155 module:fire_event("account-disco-items", { origin = origin, stanza = reply });
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156 origin.send(reply);
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157 return true;
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158 end
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159 end);