verse
118da85cb3ce
plugins/roster.lua

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plugins/roster.lua @ 210:118da85cb3ce

plugins.roster: Roster versioning support.
author Kim Alvefur <zash@zash.se>
date Tue, 07 Jun 2011 20:29:54 +0200
parent 209:48a404e083c4
child 213:aa3088108021
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local xmlns_roster = "jabber:iq:roster";
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2 local bare_jid = require "util.jid".bare;
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3 local t_insert = table.insert;
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4
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5 function verse.plugins.roster(stream)
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6 local roster = {
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7 items = {};
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8 ver = "";
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9 -- TODO:
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10 -- groups = {};
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11 };
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12 stream.roster = roster;
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13
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14 local function item_lua2xml(item_table)
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15 local xml_item = verse.stanza("item", { xmlns = xmlns_roster });
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16 for k, v in pairs(item_table) do
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17 if k ~= "groups" then
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18 xml_item.attr[k] = v;
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19 else
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20 for i = 1,#v do
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21 xml_item:tag("group"):text(v[i]):up();
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22 end
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23 end
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24 end
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25 return xml_item;
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26 end
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27
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28 local function item_xml2lua(xml_item)
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29 local item_table = { };
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30 local groups = {};
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31 item_table.groups = groups;
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32 local jid = xml_item.attr.jid;
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33
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34 for k, v in pairs(xml_item.attr) do
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35 if k ~= "xmlns" then
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36 item_table[k] = v
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37 end
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38 end
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39
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40 for group in xml_item:childtags("group") do
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41 t_insert(groups, group:get_text())
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42 end
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43 return item_table;
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44 end
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45
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46 function roster:load(r)
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47 roster.ver, roster.items = r.ver, r.items;
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48 end
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49
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50 function roster:dump()
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51 return {
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52 ver = roster.ver,
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53 items = roster.items,
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54 };
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55 end
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56
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57 -- should this be add_contact(item, callback) instead?
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58 function roster:add_contact(jid, nick, groups, callback)
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59 local item = { jid = jid, name = nick, groups = groups };
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60 local stanza = verse.iq({ type = "set" })
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61 :tag("query", { xmlns = xmlns_roster })
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62 :add_child(item_lua2xml(item));
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63 stream:send_iq(stanza, function (reply)
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64 if not callback then return end
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65 if reply.attr.type == "result" then
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66 callback(true);
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67 else
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68 type, condition, text = reply:get_error();
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69 callback(nil, { type, condition, text });
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70 end
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71 end);
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72 end
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73 -- What about subscriptions?
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74
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75 function roster:delete_contact(jid, callback)
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76 jid = (type(jid) == "table" and jid.jid) or jid;
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77 local item = { jid = jid, subscription = "remove" }
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78 if not roster.items[jid] then return false, "item-not-found"; end
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79 stream:send_iq(verse.iq({ type = "set" })
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80 :tag("query", { xmlns = xmlns_roster })
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81 :add_child(item_lua2xml(item)),
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82 function (reply)
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83 if not callback then return end
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84 if result.attr.type == "result" then
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85 callback(true);
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86 else
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87 type, condition, text = reply:get_error();
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88 callback(nil, { type, condition, text });
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89 end
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90 end);
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91 end
192
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92
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93 local function add_item(item) -- Takes one roster <item/>
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94 local roster_item = item_xml2lua(item);
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95 roster.items[roster_item.jid] = roster_item;
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96 end
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97
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98 -- Private low level
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99 local function delete_item(jid)
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100 local deleted_item = roster.items[jid];
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101 roster.items[jid] = nil;
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102 return deleted_item;
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103 end
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104
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105 function roster:fetch(callback)
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106 stream:send_iq(verse.iq({type="get"}):tag("query", { xmlns = xmlns_roster, ver = roster.ver }),
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107 function (result)
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108 if result.attr.type == "result" then
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109 local query = result:get_child("query", xmlns_roster);
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110 if query then
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111 roster.items = {};
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112 for item in query:childtags("item") do
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113 add_item(item)
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114 end
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115 roster.ver = query.attr.ver or "";
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116 end
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117 callback(roster);
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118 else
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119 type, condition, text = stanza:get_error();
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120 callback(nil, { type, condition, text }); --FIXME
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121 end
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122 end);
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123 end
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124
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125 stream:hook("iq/"..xmlns_roster, function(stanza)
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126 local type, from = stanza.attr.type, stanza.attr.from;
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127 if type == "set" and (not from or from == bare_jid(stream.jid)) then
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128 local query = stanza:get_child("query", xmlns_roster);
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129 local item = query and query:get_child("item");
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130 if item then
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131 local event, target;
d20feb8034f5 plugins.roster: Add roster push handling, roster item parsing, delete_contact()
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132 local jid = item.attr.jid;
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133 if item.attr.subscription == "remove" then
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134 event = "removed"
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135 target = delete_item(jid);
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parents: 82
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136 else
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137 event = roster.items[jid] and "changed" or "added";
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138 add_item(item)
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139 target = roster.items[jid];
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parents: 82
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140 end
210
118da85cb3ce plugins.roster: Roster versioning support.
Kim Alvefur <zash@zash.se>
parents: 209
diff changeset
141 roster.ver = query.attr.ver;
209
48a404e083c4 plugins.roster: Don't signal roster events if there was no such item
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parents: 192
diff changeset
142 if target then
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parents: 192
diff changeset
143 stream:event("roster/item-"..event, target);
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parents: 192
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144 end
192
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parents: 82
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145 -- TODO else return error? Events?
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parents: 82
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146 end
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147 stream:send(verse.reply(stanza))
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148 return true;
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parents: 82
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149 end
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150 end);
82
f306c2f8bb88 plugins.roster: Unfinished roster plugin
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
151 end