prosody
9cef4b5c2fe3
plugins/mod_disco.lua

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plugins/mod_disco.lua @ 5772:9cef4b5c2fe3

mod_disco: Check for host type == 'local' ('normal' never existed)
author Matthew Wild <mwild1@gmail.com>
date Tue, 06 Aug 2013 17:18:39 +0100
parent 5689:832ea1e9ac9e
child 5776:bd0ff8ae98a8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Prosody IM
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b7049746bd29 Update copyright headers for 2010
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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
b1885732e979 GPL->MIT!
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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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parents: 2383
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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 if module:get_host_type() == "local" then
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36 module:add_identity("server", "im", module:get_option_string("name", "Prosody")); -- FIXME should be in the non-existing mod_router
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37 end
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38 module:add_feature("http://jabber.org/protocol/disco#info");
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39 module:add_feature("http://jabber.org/protocol/disco#items");
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40
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41 -- Generate and cache disco result and caps hash
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42 local _cached_server_disco_info, _cached_server_caps_feature, _cached_server_caps_hash;
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43 local function build_server_disco_info()
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44 local query = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" });
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45 local done = {};
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parents: 2925
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46 for _,identity in ipairs(module:get_host_items("identity")) do
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47 local identity_s = identity.category.."\0"..identity.type;
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48 if not done[identity_s] then
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49 query:tag("identity", identity):up();
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50 done[identity_s] = true;
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51 end
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52 end
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53 for _,feature in ipairs(module:get_host_items("feature")) do
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54 if not done[feature] then
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55 query:tag("feature", {var=feature}):up();
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56 done[feature] = true;
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57 end
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58 end
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59 for _,extension in ipairs(module:get_host_items("extension")) do
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60 if not done[extension] then
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61 query:add_child(extension);
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62 done[extension] = true;
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63 end
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64 end
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65 _cached_server_disco_info = query;
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66 _cached_server_caps_hash = calculate_hash(query);
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67 _cached_server_caps_feature = st.stanza("c", {
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68 xmlns = "http://jabber.org/protocol/caps";
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69 hash = "sha-1";
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70 node = "http://prosody.im";
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71 ver = _cached_server_caps_hash;
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72 });
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73 end
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74 local function clear_disco_cache()
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parents: 3343
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75 _cached_server_disco_info, _cached_server_caps_feature, _cached_server_caps_hash = nil, nil, nil;
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parents: 3343
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76 end
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parents: 3343
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77 local function get_server_disco_info()
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parents: 3343
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78 if not _cached_server_disco_info then build_server_disco_info(); end
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79 return _cached_server_disco_info;
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parents: 3343
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80 end
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parents: 3343
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81 local function get_server_caps_feature()
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parents: 3343
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82 if not _cached_server_caps_feature then build_server_disco_info(); end
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parents: 3343
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83 return _cached_server_caps_feature;
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parents: 3343
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84 end
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parents: 3343
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85 local function get_server_caps_hash()
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Waqas Hussain <waqas20@gmail.com>
parents: 3343
diff changeset
86 if not _cached_server_caps_hash then build_server_disco_info(); end
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87 return _cached_server_caps_hash;
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parents: 3343
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88 end
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parents: 3343
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89
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90 module:hook("item-added/identity", clear_disco_cache);
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91 module:hook("item-added/feature", clear_disco_cache);
4337
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92 module:hook("item-added/extension", clear_disco_cache);
3665
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Waqas Hussain <waqas20@gmail.com>
parents: 3600
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93 module:hook("item-removed/identity", clear_disco_cache);
98b55c3a3deb mod_disco: Fixed: Service discovery features were not being removed on module unload (issue #205).
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94 module:hook("item-removed/feature", clear_disco_cache);
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95 module:hook("item-removed/extension", clear_disco_cache);
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96
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97 -- Handle disco requests to the server
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98 module:hook("iq/host/http://jabber.org/protocol/disco#info:query", function(event)
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99 local origin, stanza = event.origin, event.stanza;
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100 if stanza.attr.type ~= "get" then return; end
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101 local node = stanza.tags[1].attr.node;
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5627
diff changeset
102 if node and node ~= "" and node ~= "http://prosody.im#"..get_server_caps_hash() then
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parents: 5627
diff changeset
103 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#info', node=node});
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parents: 5627
diff changeset
104 local event = { origin = origin, stanza = stanza, reply = reply, node = node, exists = false};
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parents: 5627
diff changeset
105 local ret = module:fire_event("host-disco-info-node", event);
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parents: 5627
diff changeset
106 if ret ~= nil then return ret; end
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
107 if event.exists then
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
108 origin.send(reply);
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
109 else
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parents: 5627
diff changeset
110 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Node does not exist"));
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parents: 5627
diff changeset
111 end
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parents: 5627
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112 return true;
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
113 end
3349
a416d714a905 mod_disco: Reflect requested 'node' attribute in the disco#info reply.
Waqas Hussain <waqas20@gmail.com>
parents: 3348
diff changeset
114 local reply_query = get_server_disco_info();
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Waqas Hussain <waqas20@gmail.com>
parents: 3348
diff changeset
115 reply_query.node = node;
a416d714a905 mod_disco: Reflect requested 'node' attribute in the disco#info reply.
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parents: 3348
diff changeset
116 local reply = st.reply(stanza):add_child(reply_query);
1699
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117 origin.send(reply);
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diff changeset
118 return true;
53d16a28ee00 mod_disco: Handle disco#info queries using new APIs
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parents: 1523
diff changeset
119 end);
1701
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diff changeset
120 module:hook("iq/host/http://jabber.org/protocol/disco#items:query", function(event)
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parents: 1700
diff changeset
121 local origin, stanza = event.origin, event.stanza;
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parents: 1700
diff changeset
122 if stanza.attr.type ~= "get" then return; end
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parents: 1700
diff changeset
123 local node = stanza.tags[1].attr.node;
5689
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124 if node and node ~= "" then
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diff changeset
125 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#items', node=node});
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126 local event = { origin = origin, stanza = stanza, reply = reply, node = node, exists = false};
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127 local ret = module:fire_event("host-disco-items-node", event);
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diff changeset
128 if ret ~= nil then return ret; end
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diff changeset
129 if event.exists then
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130 origin.send(reply);
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diff changeset
131 else
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132 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Node does not exist"));
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133 end
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134 return true;
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135 end
1701
ceab61010f87 mod_disco: Handle disco#items queries using new APIs
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diff changeset
136 local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#items");
5689
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parents: 5627
diff changeset
137 local ret = module:fire_event("host-disco-items", { origin = origin, stanza = stanza, reply = reply });
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parents: 5627
diff changeset
138 if ret ~= nil then return ret; end
5081
c0c060e450be hostmanager, mod_disco: Show optional 'name' option from the config in disco#items queries (fixes use-case in #292) (thanks diSabler, mva)
Matthew Wild <mwild1@gmail.com>
parents: 4985
diff changeset
139 for jid, name in pairs(get_children(module.host)) do
c0c060e450be hostmanager, mod_disco: Show optional 'name' option from the config in disco#items queries (fixes use-case in #292) (thanks diSabler, mva)
Matthew Wild <mwild1@gmail.com>
parents: 4985
diff changeset
140 reply:tag("item", {jid = jid, name = name~=true and name or nil}):up();
1701
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parents: 1700
diff changeset
141 end
2491
4be6810914eb mod_disco: Added option 'disco_items' to allow appending items to a host's disco#items result.
Waqas Hussain <waqas20@gmail.com>
parents: 2383
diff changeset
142 for _, item in ipairs(disco_items) do
4be6810914eb mod_disco: Added option 'disco_items' to allow appending items to a host's disco#items result.
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parents: 2383
diff changeset
143 reply:tag("item", {jid=item[1], name=item[2]}):up();
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parents: 2383
diff changeset
144 end
1701
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diff changeset
145 origin.send(reply);
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diff changeset
146 return true;
ceab61010f87 mod_disco: Handle disco#items queries using new APIs
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parents: 1700
diff changeset
147 end);
3343
c70c6d5bf270 mod_disco: Support for putting the server's caps hash in stream:features to allow the client to cache disco#info for the server instead of requesting it at each login.
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
148
3347
99f56bed5228 mod_disco: Cache disco#info reply and caps hash for host, return correct caps hash, and respond to disco#info to the caps hash node.
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parents: 3343
diff changeset
149 -- Handle caps stream feature
3343
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Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
150 module:hook("stream-features", function (event)
3695
d2c4856c7ed5 mod_disco: Don't add caps hash to stream features on unauthenticated connections.
Waqas Hussain <waqas20@gmail.com>
parents: 3665
diff changeset
151 if event.origin.type == "c2s" then
d2c4856c7ed5 mod_disco: Don't add caps hash to stream features on unauthenticated connections.
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parents: 3665
diff changeset
152 event.features:add_child(get_server_caps_feature());
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parents: 3665
diff changeset
153 end
3343
c70c6d5bf270 mod_disco: Support for putting the server's caps hash in stream:features to allow the client to cache disco#info for the server instead of requesting it at each login.
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
154 end);
c70c6d5bf270 mod_disco: Support for putting the server's caps hash in stream:features to allow the client to cache disco#info for the server instead of requesting it at each login.
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
155
c70c6d5bf270 mod_disco: Support for putting the server's caps hash in stream:features to allow the client to cache disco#info for the server instead of requesting it at each login.
Matthew Wild <mwild1@gmail.com>
parents: 2925
diff changeset
156 -- Handle disco requests to user accounts
2383
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Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
157 module:hook("iq/bare/http://jabber.org/protocol/disco#info:query", function(event)
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
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parents: 1704
diff changeset
158 local origin, stanza = event.origin, event.stanza;
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parents: 1704
diff changeset
159 if stanza.attr.type ~= "get" then return; end
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parents: 1704
diff changeset
160 local node = stanza.tags[1].attr.node;
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diff changeset
161 local username = jid_split(stanza.attr.to) or origin.username;
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parents: 1704
diff changeset
162 if not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
5627
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parents: 5081
diff changeset
163 if node and node ~= "" then
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
164 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#info', node=node});
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parents: 5081
diff changeset
165 if not reply.attr.from then reply.attr.from = origin.username.."@"..origin.host; end -- COMPAT To satisfy Psi when querying own account
5689
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
166 local event = { origin = origin, stanza = stanza, reply = reply, node = node, exists = false};
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
167 local ret = module:fire_event("account-disco-info-node", event);
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
168 if ret ~= nil then return ret; end
5627
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diff changeset
169 if event.exists then
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
170 origin.send(reply);
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parents: 5081
diff changeset
171 else
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
172 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Node does not exist"));
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5081
diff changeset
173 end
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
Florian Zeitz <florob@babelmonkeys.de>
parents: 5081
diff changeset
174 return true;
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
Florian Zeitz <florob@babelmonkeys.de>
parents: 5081
diff changeset
175 end
2383
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
176 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#info'});
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Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
177 if not reply.attr.from then reply.attr.from = origin.username.."@"..origin.host; end -- COMPAT To satisfy Psi when querying own account
5627
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parents: 5081
diff changeset
178 module:fire_event("account-disco-info", { origin = origin, reply = reply });
2383
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Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
179 origin.send(reply);
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
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parents: 1704
diff changeset
180 return true;
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
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parents: 1704
diff changeset
181 end
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
182 end);
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
183 module:hook("iq/bare/http://jabber.org/protocol/disco#items:query", function(event)
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
184 local origin, stanza = event.origin, event.stanza;
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
185 if stanza.attr.type ~= "get" then return; end
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
186 local node = stanza.tags[1].attr.node;
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
187 local username = jid_split(stanza.attr.to) or origin.username;
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
188 if not stanza.attr.to or is_contact_subscribed(username, module.host, jid_bare(stanza.attr.from)) then
5627
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parents: 5081
diff changeset
189 if node and node ~= "" then
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
190 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#items', node=node});
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5081
diff changeset
191 if not reply.attr.from then reply.attr.from = origin.username.."@"..origin.host; end -- COMPAT To satisfy Psi when querying own account
5689
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
192 local event = { origin = origin, stanza = stanza, reply = reply, node = node, exists = false};
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
193 local ret = module:fire_event("account-disco-items-node", event);
832ea1e9ac9e mod_disco: Allow ansering disco requests including nodes, and adding custom items to disco#items requests
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parents: 5627
diff changeset
194 if ret ~= nil then return ret; end
5627
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parents: 5081
diff changeset
195 if event.exists then
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
196 origin.send(reply);
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
197 else
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
198 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Node does not exist"));
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diff changeset
199 end
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
200 return true;
0439d1349dc1 mod_disco: Emit events for disco requests, which contain a node, on user accounts
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parents: 5081
diff changeset
201 end
2383
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
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parents: 1704
diff changeset
202 local reply = st.reply(stanza):tag('query', {xmlns='http://jabber.org/protocol/disco#items'});
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
203 if not reply.attr.from then reply.attr.from = origin.username.."@"..origin.host; end -- COMPAT To satisfy Psi when querying own account
5627
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parents: 5081
diff changeset
204 module:fire_event("account-disco-items", { origin = origin, stanza = stanza, reply = reply });
2383
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
205 origin.send(reply);
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
206 return true;
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
207 end
29a30884aadd mod_disco: Handle and fire events for service discovery queries for bare account JIDs (thanks darkrain).
Waqas Hussain <waqas20@gmail.com>
parents: 1704
diff changeset
208 end);