prosody
f0743928ef7e
plugins/mod_roster.lua

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plugins/mod_roster.lua @ 916:f0743928ef7e

core.rostermanager/mod_roster: Support for roster versioning
author Matthew Wild <mwild1@gmail.com>
date Mon, 23 Mar 2009 00:31:29 +0000
parent 896:2c0b9e3c11c3
child 928:92288c13d7bc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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2c0b9e3c11c3 0.3->0.4
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1 -- Prosody IM v0.4
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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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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
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10
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11 local st = require "util.stanza"
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12
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13 local jid_split = require "util.jid".split;
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14 local t_concat = table.concat;
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15 local tostring = tostring;
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16
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17 local handle_presence = require "core.presencemanager".handle_presence;
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18 local rm_remove_from_roster = require "core.rostermanager".remove_from_roster;
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19 local rm_add_to_roster = require "core.rostermanager".add_to_roster;
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20 local rm_roster_push = require "core.rostermanager".roster_push;
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21 local core_route_stanza = core_route_stanza;
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22
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23 module:add_feature("jabber:iq:roster");
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25 module:add_iq_handler("c2s", "jabber:iq:roster",
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26 function (session, stanza)
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27 if stanza.tags[1].name == "query" then
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28 if stanza.attr.type == "get" then
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29 local roster = st.reply(stanza)
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30 :query("jabber:iq:roster");
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31
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32 local ver = stanza.tags[1].attr.ver
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33
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34 if (not ver) or tonumber(ver) ~= (session.roster[false].version or 1) then
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35 -- Client does not support versioning, or has stale roster
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36 for jid in pairs(session.roster) do
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37 if jid ~= "pending" and jid then
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38 roster:tag("item", {
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39 jid = jid,
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40 subscription = session.roster[jid].subscription,
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41 ask = session.roster[jid].ask,
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42 name = session.roster[jid].name,
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43 });
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44 for group in pairs(session.roster[jid].groups) do
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45 roster:tag("group"):text(group):up();
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46 end
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47 roster:up(); -- move out from item
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48 end
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49 end
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50 roster.tags[1].attr.ver = tostring(session.roster[false].version or "1");
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51 end
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52 session.send(roster);
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53 session.interested = true; -- resource is interested in roster updates
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54 return true;
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55 elseif stanza.attr.type == "set" then
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56 local query = stanza.tags[1];
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57 if #query.tags == 1 and query.tags[1].name == "item"
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58 and query.tags[1].attr.xmlns == "jabber:iq:roster" and query.tags[1].attr.jid
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59 -- Protection against overwriting roster.pending, until we move it
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60 and query.tags[1].attr.jid ~= "pending" then
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61 local item = query.tags[1];
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62 local from_node, from_host = jid_split(stanza.attr.from);
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63 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
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64 local node, host, resource = jid_split(item.attr.jid);
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65 local to_bare = node and (node.."@"..host) or host; -- bare JID
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66 if not resource and host then
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67 if item.attr.jid ~= from_node.."@"..from_host then
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68 if item.attr.subscription == "remove" then
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69 local r_item = session.roster[item.attr.jid];
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70 if r_item then
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71 local success, err_type, err_cond, err_msg = rm_remove_from_roster(session, item.attr.jid);
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72 if success then
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73 session.send(st.reply(stanza));
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74 rm_roster_push(from_node, from_host, item.attr.jid);
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75 if r_item.subscription == "both" or r_item.subscription == "from" then
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76 handle_presence(session, st.presence({type="unsubscribed"}), from_bare, to_bare,
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77 core_route_stanza, false);
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78 elseif r_item.subscription == "both" or r_item.subscription == "to" then
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79 handle_presence(session, st.presence({type="unsubscribe"}), from_bare, to_bare,
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80 core_route_stanza, false);
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81 end
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82 else
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83 session.send(st.error_reply(stanza, err_type, err_cond, err_msg));
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84 end
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85 else
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86 session.send(st.error_reply(stanza, "modify", "item-not-found"));
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87 end
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88 else
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89 local r_item = {name = item.attr.name, groups = {}};
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90 if r_item.name == "" then r_item.name = nil; end
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91 if session.roster[item.attr.jid] then
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92 r_item.subscription = session.roster[item.attr.jid].subscription;
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93 r_item.ask = session.roster[item.attr.jid].ask;
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94 else
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95 r_item.subscription = "none";
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96 end
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97 for _, child in ipairs(item) do
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98 if child.name == "group" then
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99 local text = t_concat(child);
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100 if text and text ~= "" then
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101 r_item.groups[text] = true;
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102 end
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103 end
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104 end
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105 local success, err_type, err_cond, err_msg = rm_add_to_roster(session, item.attr.jid, r_item);
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106 if success then
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107 session.send(st.reply(stanza));
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108 rm_roster_push(from_node, from_host, item.attr.jid);
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109 else
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110 session.send(st.error_reply(stanza, err_type, err_cond, err_msg));
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111 end
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112 end
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113 else
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114 session.send(st.error_reply(stanza, "cancel", "not-allowed"));
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115 end
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116 else
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117 session.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME what's the correct error?
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118 end
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119 else
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120 session.send(st.error_reply(stanza, "modify", "bad-request"));
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121 end
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122 return true;
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123 end
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124 end
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125 end);