prosody-modules
3de60860adca
mod_ircd/mod_ircd.lua

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mod_ircd/mod_ircd.lua @ 111:3de60860adca

mod_ircd: Initial commit of a wonderfully hacky but working IRC->XMPP interface for Prosody
author Matthew Wild <mwild1@gmail.com>
date Wed, 23 Dec 2009 14:22:02 +0000
child 132:d4ff1cd414e5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 local irc_listener = { default_port = 6667, default_mode = "*l" };
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2
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3 local sessions = {};
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4 local commands = {};
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5
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6 local nicks = {};
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7
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8 local st = require "util.stanza";
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9
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10 local conference_server = module:get_option("conference_server") or "conference.jabber.org";
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11
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12 local function irc_close_session(session)
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13 session.conn:close();
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14 end
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15
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16 function irc_listener.onincoming(conn, data)
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17 local session = sessions[conn];
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18 if not session then
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19 session = { conn = conn, host = module.host, reset_stream = function () end,
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20 close = irc_close_session, log = logger.init("irc"..(conn.id or "1")),
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21 roster = {} };
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22 sessions[conn] = session;
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23 function session.data(data)
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24 module:log("debug", "Received: %s", data);
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25 local command, args = data:match("^%s*([^ ]+) *(.*)%s*$");
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26 if not command then
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27 module:log("warn", "Invalid command: %s", data);
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28 return;
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29 end
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30 command = command:upper();
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31 module:log("debug", "Received command: %s", command);
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32 if commands[command] then
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33 local ret = commands[command](session, args);
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34 if ret then
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35 session.send(ret.."\r\n");
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36 end
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37 end
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38 end
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39 function session.send(data)
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40 module:log("debug", "sending: %s", data);
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41 return conn:write(data.."\r\n");
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42 end
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43 end
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44 if data then
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45 session.data(data);
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46 end
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47 end
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48
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49 function irc_listener.ondisconnect(conn, error)
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50 module:log("debug", "Client disconnected");
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51 sessions[conn] = nil;
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52 end
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53
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54 function commands.NICK(session, nick)
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55 nick = nick:match("^[%w_]+");
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56 if nicks[nick] then
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57 session.send(":"..session.host.." 433 * The nickname "..nick.." is already in use");
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58 return;
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59 end
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60 nicks[nick] = session;
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61 session.nick = nick;
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62 session.full_jid = nick.."@"..module.host.."/ircd";
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63 session.type = "c2s";
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64 module:log("debug", "Client bound to %s", session.full_jid);
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65 session.send(":"..session.host.." 001 "..session.nick.." :Welcome to XMPP via the "..session.host.." gateway "..session.nick);
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66 end
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67
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68 local joined_mucs = {};
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69 function commands.JOIN(session, channel)
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70 if not joined_mucs[channel] then
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71 joined_mucs[channel] = { occupants = {}, sessions = {} };
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72 end
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73 joined_mucs[channel].sessions[session] = true;
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74 local join_stanza = st.presence({ from = session.full_jid, to = channel:gsub("^#", "").."@"..conference_server.."/"..session.nick });
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75 core_process_stanza(session, join_stanza);
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76 session.send(":"..session.nick.." JOIN :"..channel);
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77 session.send(":"..session.host.." 332 "..session.nick.." "..channel.." :Connection in progress...");
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78 session.send(":"..session.host.." 353 "..session.nick.." = "..channel.." :"..session.nick);
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79 session.send(":"..session.host.." 366 "..session.nick.." "..channel.." :End of /NAMES list.");
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80 end
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81
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82 function commands.PART(session, channel)
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83 local channel, part_message = channel:match("^(%S+) :(.+)$");
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84 core_process_stanza(session, st.presence{ type = "unavailable", from = session.full_jid,
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85 to = channel:gsub("^#", "").."@"..conference_server.."/"..session.nick }:tag("status"):text(part_message));
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86 end
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87
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88 function commands.PRIVMSG(session, message)
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89 local who, message = message:match("^(%S+) :(.+)$");
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90 if joined_mucs[who] then
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91 core_process_stanza(session, st.message{to=who:gsub("^#", "").."@"..conference_server, type="groupchat"}:tag("body"):text(message));
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92 end
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93 end
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94
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95 function commands.WHO(session, channel)
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96 if joined_mucs[channel] then
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97 for nick in pairs(joined_mucs[channel].occupants) do
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98 --n=MattJ 91.85.191.50 irc.freenode.net MattJ H :0 Matthew Wild
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99 session.send(":"..session.host.." 352 "..session.nick.." "..channel.." "..nick.." "..nick.." "..session.host.." "..nick.." H :0 "..nick);
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100 end
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101 session.send(":"..session.host.." 315 "..session.nick.." "..channel.. " :End of /WHO list");
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102 end
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103 end
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104
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105 function commands.MODE(session, channel)
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106 session.send(":"..session.host.." 324 "..session.nick.." "..channel.." +J");
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107 end
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108
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109 --- Component (handle stanzas from the server for IRC clients)
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110 function irc_component(origin, stanza)
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111 local from, from_bare = stanza.attr.from, jid.bare(stanza.attr.from);
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112 local from_node = "#"..jid.split(stanza.attr.from);
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113
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114 if joined_mucs[from_node] and from_bare == from then
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115 -- From room itself
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116 local joined_muc = joined_mucs[from_node];
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117 if stanza.name == "message" then
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118 local subject = stanza:get_child("subject");
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119 if subject then
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120 local subject_text = subject:get_text();
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121 for session in pairs(joined_muc.sessions) do
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122 session.send(":"..session.host.." 332 "..session.nick.." "..from_node.." :"..subject_text);
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123 end
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124 end
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125 end
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126 elseif joined_mucs[from_node] then
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127 -- From room occupant
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128 local joined_muc = joined_mucs[from_node];
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129 local nick = select(3, jid.split(from)):gsub(" ", "_");
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130 if stanza.name == "presence" then
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131 local what;
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132 if not stanza.attr.type then
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133 if joined_muc.occupants[nick] then
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134 return;
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135 end
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136 joined_muc.occupants[nick] = true;
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137 what = "JOIN";
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138 else
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139 joined_muc.occupants[nick] = nil;
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140 what = "PART";
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141 end
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142 for session in pairs(joined_muc.sessions) do
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143 if nick ~= session.nick then
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144 session.send(":"..nick.."!"..nick.." "..what.." :"..from_node);
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145 end
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146 end
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147 elseif stanza.name == "message" then
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148 local body = stanza:get_child("body");
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149 local hasdelay = stanza:get_child("delay", "urn:xmpp:delay");
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150 if body then
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151 for session in pairs(joined_muc.sessions) do
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152 if nick ~= session.nick or hasdelay then
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153 session.send(":"..nick.." PRIVMSG "..from_node.." :"..body:get_text());
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154 end
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155 end
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156 end
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157 end
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158 end
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159 end
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160
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161 require "core.componentmanager".register_component(module.host, irc_component);
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162
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163 prosody.events.add_handler("server-stopping", function (shutdown)
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164 module:log("debug", "Closing IRC connections prior to shutdown");
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165 for channel, joined_muc in pairs(joined_mucs) do
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166 for session in pairs(joined_muc.sessions) do
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167 core_process_stanza(session,
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168 st.presence{ type = "unavailable", from = session.full_jid,
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169 to = channel:gsub("^#", "").."@"..conference_server.."/"..session.nick }
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170 :tag("status")
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171 :text("Connection closed: Server is shutting down"..(shutdown.reason and (": "..shutdown.reason) or "")));
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172 session:close();
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173 end
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174 end
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175 end);
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176
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177 require "net.connlisteners".register("irc", irc_listener);
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178 require "net.connlisteners".start("irc", { port = module:get_option("port") });