prosody
bdca5025fb46
plugins/mod_pep.lua

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plugins/mod_pep.lua @ 2776:bdca5025fb46

mod_httpserver: Text files are text/plain, and not plain/text.
author Waqas Hussain <waqas20@gmail.com>
date Thu, 10 Dec 2009 16:52:08 +0500
parent 2045:3b7473a3fa44
child 2326:814eaba0c777
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 Waqas Hussain
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4 --
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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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10 local jid_bare = require "util.jid".bare;
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11 local jid_split = require "util.jid".split;
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12 local st = require "util.stanza";
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13 local hosts = hosts;
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14 local user_exists = require "core.usermanager".user_exists;
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15 local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed;
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16 local pairs, ipairs = pairs, ipairs;
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17 local next = next;
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18 local type = type;
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19 local load_roster = require "core.rostermanager".load_roster;
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20 local sha1 = require "util.hashes".sha1;
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21 local base64 = require "util.encodings".base64.encode;
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22
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23 local NULL = {};
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24 local data = {};
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25 local recipients = {};
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26 local hash_map = {};
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27
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28 module.save = function()
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29 return { data = data, recipients = recipients, hash_map = hash_map };
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30 end
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31 module.restore = function(state)
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32 data = state.data or {};
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33 recipients = state.recipients or {};
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34 hash_map = state.hash_map or {};
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35 end
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36
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37 module:add_identity("pubsub", "pep", "Prosody");
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38 module:add_feature("http://jabber.org/protocol/pubsub#publish");
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39
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40 local function publish(session, node, item)
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41 item.attr.xmlns = nil;
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42 local disable = #item.tags ~= 1 or #item.tags[1].tags == 0;
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43 if #item.tags == 0 then item.name = "retract"; end
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44 local bare = session.username..'@'..session.host;
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45 local stanza = st.message({from=bare, type='headline'})
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46 :tag('event', {xmlns='http://jabber.org/protocol/pubsub#event'})
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47 :tag('items', {node=node})
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48 :add_child(item)
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49 :up()
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50 :up();
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51
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52 -- store for the future
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53 local user_data = data[bare];
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54 if disable then
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55 if user_data then
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56 user_data[node] = nil;
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57 if not next(user_data) then data[bare] = nil; end
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58 end
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59 else
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60 if not user_data then user_data = {}; data[bare] = user_data; end
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61 user_data[node] = stanza;
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62 end
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63
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64 -- broadcast
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65 for recipient, notify in pairs(recipients[bare] or NULL) do
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66 if notify[node] then
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67 stanza.attr.to = recipient;
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68 core_post_stanza(session, stanza);
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69 end
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70 end
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71 end
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72 local function publish_all(user, recipient, session)
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73 local d = data[user];
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74 local notify = recipients[user] and recipients[user][recipient];
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75 if d and notify then
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76 for node in pairs(notify) do
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77 local message = d[node];
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78 if message then
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79 message.attr.to = recipient;
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80 session.send(message);
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81 end
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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 local function get_caps_hash_from_presence(stanza, current)
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87 local t = stanza.attr.type;
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88 if not t then
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89 for _, child in pairs(stanza.tags) do
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90 if child.name == "c" and child.attr.xmlns == "http://jabber.org/protocol/caps" then
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91 local attr = child.attr;
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92 if attr.hash then -- new caps
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93 if attr.hash == 'sha-1' and attr.node and attr.ver then return attr.ver, attr.node.."#"..attr.ver; end
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94 else -- legacy caps
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95 if attr.node and attr.ver then return attr.node.."#"..attr.ver.."#"..(attr.ext or ""), attr.node.."#"..attr.ver; end
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96 end
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97 return; -- bad caps format
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98 end
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99 end
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100 elseif t == "unavailable" or t == "error" then
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101 return;
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102 end
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103 return current; -- no caps, could mean caps optimization, so return current
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104 end
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105
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106 module:hook("presence/bare", function(event)
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107 -- inbound presence to bare JID recieved
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108 local origin, stanza = event.origin, event.stanza;
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109
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110 local user = stanza.attr.to or (origin.username..'@'..origin.host);
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111 local bare = jid_bare(stanza.attr.from);
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112 local item = load_roster(jid_split(user))[bare];
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113 if not stanza.attr.to or (item and (item.subscription == 'from' or item.subscription == 'both')) then
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114 local recipient = stanza.attr.from;
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115 local current = recipients[user] and recipients[user][recipient];
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116 local hash = get_caps_hash_from_presence(stanza, current);
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117 if current == hash then return; end
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118 if not hash then
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119 if recipients[user] then recipients[user][recipient] = nil; end
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120 else
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121 recipients[user] = recipients[user] or {};
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122 if hash_map[hash] then
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123 recipients[user][recipient] = hash_map[hash];
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124 publish_all(user, recipient, origin);
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125 else
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126 recipients[user][recipient] = hash;
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127 origin.send(
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128 st.stanza("iq", {from=stanza.attr.to, to=stanza.attr.from, id="disco", type="get"})
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129 :query("http://jabber.org/protocol/disco#info")
f989608964ec mod_pep: Use cached caps
Waqas Hussain <waqas20@gmail.com>
parents: 1437
diff changeset
130 );
f989608964ec mod_pep: Use cached caps
Waqas Hussain <waqas20@gmail.com>
parents: 1437
diff changeset
131 end
1325
b58645973d7d mod_pep: Send items to contacts coming online
Waqas Hussain <waqas20@gmail.com>
parents: 1324
diff changeset
132 end
b58645973d7d mod_pep: Send items to contacts coming online
Waqas Hussain <waqas20@gmail.com>
parents: 1324
diff changeset
133 end
1327
20285e9d71ee mod_pep: Give the presence handler a higher than default priority
Waqas Hussain <waqas20@gmail.com>
parents: 1325
diff changeset
134 end, 10);
1325
b58645973d7d mod_pep: Send items to contacts coming online
Waqas Hussain <waqas20@gmail.com>
parents: 1324
diff changeset
135
1404
12abd2da8885 mod_pep: Use new style events
Waqas Hussain <waqas20@gmail.com>
parents: 1402
diff changeset
136 module:hook("iq/bare/http://jabber.org/protocol/pubsub:pubsub", function(event)
12abd2da8885 mod_pep: Use new style events
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parents: 1402
diff changeset
137 local session, stanza = event.origin, event.stanza;
1136
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
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parents:
diff changeset
138 if stanza.attr.type == 'set' and (not stanza.attr.to or jid_bare(stanza.attr.from) == stanza.attr.to) then
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
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parents:
diff changeset
139 local payload = stanza.tags[1];
1400
cbbb4f4fed68 mod_pep: Added some comments
Waqas Hussain <waqas20@gmail.com>
parents: 1399
diff changeset
140 if payload.name == 'pubsub' then -- <pubsub xmlns='http://jabber.org/protocol/pubsub'>
1136
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
141 payload = payload.tags[1];
1619
ae3250783db2 mod_pep: Added support for pubsub item retraction
Waqas Hussain <waqas20@gmail.com>
parents: 1522
diff changeset
142 if payload and (payload.name == 'publish' or payload.name == 'retract') and payload.attr.node then -- <publish node='http://jabber.org/protocol/tune'>
1136
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
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parents:
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143 local node = payload.attr.node;
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
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parents:
diff changeset
144 payload = payload.tags[1];
2043
c0784614b66f PEP: Stricter checks on payload validity.
Waqas Hussain <waqas20@gmail.com>
parents: 2042
diff changeset
145 if payload and payload.name == "item" then -- <item>
2044
11efc4aecd55 PEP: Send publish IQ result before broadcast.
Waqas Hussain <waqas20@gmail.com>
parents: 2043
diff changeset
146 session.send(st.reply(stanza));
2042
34e6e06dd089 PEP: Clone payloads to allow plugins to reuse stanzas.
Waqas Hussain <waqas20@gmail.com>
parents: 2041
diff changeset
147 publish(session, node, st.clone(payload));
1136
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parents:
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148 return true;
1425
8187f72b7425 mod_pep: Removed some YODO comments
Waqas Hussain <waqas20@gmail.com>
parents: 1424
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149 end
8187f72b7425 mod_pep: Removed some YODO comments
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parents: 1424
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150 end
1136
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
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parents:
diff changeset
151 end
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
Waqas Hussain <waqas20@gmail.com>
parents:
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152 end
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
153 end);
506012db54e8 mod_pep: Initial commit (extremely basic implementation)
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parents:
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154
1437
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
155 local function calculate_hash(disco_info)
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parents: 1430
diff changeset
156 local identities, features, extensions = {}, {}, {};
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157 for _, tag in pairs(disco_info) do
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parents: 1430
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158 if tag.name == "identity" then
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
159 table.insert(identities, (tag.attr.category or "").."\0"..(tag.attr.type or "").."\0"..(tag.attr["xml:lang"] or "").."\0"..(tag.attr.name or ""));
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parents: 1430
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160 elseif tag.name == "feature" then
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
161 table.insert(features, tag.attr.var or "");
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
162 elseif tag.name == "x" and tag.attr.xmlns == "jabber:x:data" then
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
163 local form = {};
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
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164 local FORM_TYPE;
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parents: 1430
diff changeset
165 for _, field in pairs(tag.tags) do
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
166 if field.name == "field" and field.attr.var then
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
167 local values = {};
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
168 for _, val in pairs(field.tags) do
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
169 val = #val.tags == 0 and table.concat(val); -- FIXME use get_text?
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
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170 if val then table.insert(values, val); end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
171 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
172 table.sort(values);
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
173 if field.attr.var == "FORM_TYPE" then
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
174 FORM_TYPE = values[1];
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
175 elseif #values > 0 then
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
176 table.insert(form, field.attr.var.."\0"..table.concat(values, "<"));
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
177 else
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
178 table.insert(form, field.attr.var);
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
179 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
180 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
181 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
182 table.sort(form);
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
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183 form = table.concat(form, "<");
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
184 if FORM_TYPE then form = FORM_TYPE.."\0"..form; end
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
185 table.insert(extensions, form);
cf2eba9b1716 mod_pep: Entity capabilities
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parents: 1430
diff changeset
186 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
187 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
188 table.sort(identities);
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
189 table.sort(features);
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
190 table.sort(extensions);
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
191 if #identities > 0 then identities = table.concat(identities, "<"):gsub("%z", "/").."<"; else identities = ""; end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
192 if #features > 0 then features = table.concat(features, "<").."<"; else features = ""; end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
193 if #extensions > 0 then extensions = table.concat(extensions, "<"):gsub("%z", "<").."<"; else extensions = ""; end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
194 local S = identities..features..extensions;
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
195 local ver = base64(sha1(S));
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
196 return ver, S;
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
197 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
198
1424
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
199 module:hook("iq/bare/disco", function(event)
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
200 local session, stanza = event.origin, event.stanza;
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
201 if stanza.attr.type == "result" then
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
202 local disco = stanza.tags[1];
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
203 if disco and disco.name == "query" and disco.attr.xmlns == "http://jabber.org/protocol/disco#info" then
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
204 -- Process disco response
1437
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
205 local user = stanza.attr.to or (session.username..'@'..session.host);
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
206 local contact = stanza.attr.from;
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
207 local current = recipients[user] and recipients[user][contact];
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
208 if type(current) ~= "string" then return; end -- check if waiting for recipient's response
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
209 local ver = current;
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
210 if not string.find(current, "#") then
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
211 ver = calculate_hash(disco.tags); -- calculate hash
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
212 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
213 local notify = {};
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
214 for _, feature in pairs(disco.tags) do
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
215 if feature.name == "feature" and feature.attr.var then
1461
51f0202b0868 mod_pep: Escape + in pattern
Matthew Wild <mwild1@gmail.com>
parents: 1457
diff changeset
216 local nfeature = feature.attr.var:match("^(.*)%+notify$");
1437
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
217 if nfeature then notify[nfeature] = true; end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
218 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
219 end
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
220 hash_map[ver] = notify; -- update hash map
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
221 recipients[user][contact] = notify; -- set recipient's data to calculated data
cf2eba9b1716 mod_pep: Entity capabilities
Waqas Hussain <waqas20@gmail.com>
parents: 1430
diff changeset
222 -- send messages to recipient
1439
f989608964ec mod_pep: Use cached caps
Waqas Hussain <waqas20@gmail.com>
parents: 1437
diff changeset
223 publish_all(user, contact, session);
1424
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
224 end
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
225 end
6969ad97ca58 mod_pep: Added handler for disco responses
Waqas Hussain <waqas20@gmail.com>
parents: 1404
diff changeset
226 end);