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598 lines
26 KiB
598 lines
26 KiB
-- README |
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-- Squish verse into this dir, then squish them into one, which you move |
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-- and rename to mod_ircd.lua in your prosody modules/plugins dir. |
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-- |
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-- IRC spec: |
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-- http://tools.ietf.org/html/rfc2812 |
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|
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local client_xmlns = "jabber:client" |
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|
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--module:set_global(); |
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|
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local server = require "net.server"; |
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local portmanager = require "core.portmanager"; |
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|
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local component_jid, component_secret, muc_server, port_number = |
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module.host, nil, module:get_option_string("conference_server"), module:get_option_number("listener_port", 7000); |
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|
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if not muc_server then |
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module:log ("error", "You need to set the MUC server in the configuration (conference_server)!") |
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module:log ("error", "Be a good boy or girl and go read the wiki at: http://code.google.com/p/prosody-modules/wiki/mod_ircd") |
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return false; |
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end |
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|
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package.loaded["util.sha1"] = require "util.encodings"; |
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--local verse = require "verse" |
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--require "verse.component" |
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--require "socket" |
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require "verse".init("component"); |
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|
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c = verse.new(); -- something interferes with prosody's console logging |
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c:add_plugin("groupchat"); |
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|
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local function verse2prosody(e) |
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return c:event("stanza", e.stanza) or true; |
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end |
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module:hook("message/bare", verse2prosody); |
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module:hook("message/full", verse2prosody); |
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module:hook("presence/bare", verse2prosody); |
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module:hook("presence/full", verse2prosody); |
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c.type = "component"; |
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c.send = core_post_stanza; |
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|
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local jid = require "util.jid"; |
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local nodeprep = require "util.encodings".stringprep.nodeprep; |
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|
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local function utf8_clean (s) |
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local push, join = table.insert, table.concat; |
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local r, i = {}, 1; |
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if not(s and #s > 0) then |
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return "" |
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end |
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while true do |
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local c = s:sub(i,i) |
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local b = c:byte(); |
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local w = ( |
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(b >= 9 and b <= 10 and 0) or |
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(b >= 32 and b <= 126 and 0) or |
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(b >= 192 and b <= 223 and 1) or |
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(b >= 224 and b <= 239 and 2) or |
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(b >= 240 and b <= 247 and 3) or |
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(b >= 248 and b <= 251 and 4) or |
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(b >= 251 and b <= 252 and 5) or nil |
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) |
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if not w then |
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push(r, "?") |
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else |
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local n = i + w; |
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if w == 0 then |
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push(r, c); |
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elseif n > #s then |
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push(r, ("?"):format(b)); |
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else |
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local e = s:sub(i+1,n); |
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if e:match('^[\128-\191]*$') then |
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push(r, c); |
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push(r, e); |
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i = n; |
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else |
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push(r, ("?"):format(b)); |
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end |
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end |
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end |
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i = i + 1; |
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if i > #s then |
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break |
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end |
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end |
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return join(r); |
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end |
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|
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local function parse_line(line) |
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local ret = {}; |
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if line:sub(1,1) == ":" then |
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ret.from, line = line:match("^:(%w+)%s+(.*)$"); |
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end |
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for part in line:gmatch("%S+") do |
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if part:sub(1,1) == ":" then |
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ret[#ret+1] = line:match(":(.*)$"); |
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break |
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end |
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ret[#ret+1]=part; |
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end |
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return ret; |
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end |
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|
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local function build_line(parts) |
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if #parts > 1 then |
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parts[#parts] = ":" .. parts[#parts]; |
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end |
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return (parts.from and ":"..parts.from.." " or "")..table.concat(parts, " "); |
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end |
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|
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local function irc2muc(channel, nick) |
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local room = channel and nodeprep(channel:match("^#(%w+)")) or nil; |
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if not nick then |
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return jid.join(room, muc_server); |
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else |
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return jid.join(room, muc_server, nick); |
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end |
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end |
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local function muc2irc(room) |
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local channel, _, nick = jid.split(room); |
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return "#"..channel, nick; |
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end |
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local role_map = { |
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moderator = "@", |
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participant = "", |
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visitor = "", |
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none = "" |
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} |
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local aff_map = { |
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owner = "~", |
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administrator = "&", |
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member = "+", |
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none = "" |
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} |
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local role_modemap = { |
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moderator = "o", |
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participant = "", |
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visitor = "", |
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none = "" |
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} |
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local aff_modemap = { |
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owner = "q", |
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administrator = "a", |
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member = "v", |
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none = "" |
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} |
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local irc_listener = { default_port = port_number, default_mode = "*l"; interface = "192.168.1.3" }; |
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local sessions = module:shared("sessions"); |
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local jids = {}; |
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local commands = {}; |
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local nicks = {}; |
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local usernames = {}; |
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local st = require "util.stanza"; |
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local conference_server = muc_server; |
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local function irc_close_session(session) |
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session.conn:close(); |
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end |
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function irc_listener.onincoming(conn, data) |
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local session = sessions[conn]; |
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if not session then |
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session = { conn = conn, host = component_jid, reset_stream = function () end, |
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close = irc_close_session, log = logger.init("irc"..(conn.id or "1")), |
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rooms = {}, roster = {}, has_un = false }; |
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sessions[conn] = session; |
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function session.data(data) |
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local parts = parse_line(data); |
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module:log("debug", require"util.serialization".serialize(parts)); |
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local command = table.remove(parts, 1); |
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if not command then |
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return; |
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end |
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command = command:upper(); |
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if not session.username and not session.nick then |
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if not (command == "USER" or command == "NICK") then |
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module:log("debug", "Client tried to send command %s before registering", command); |
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return session.send{from=muc_server, "451", command, "You have not completed the registration."} |
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end |
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end |
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if commands[command] then |
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local ret = commands[command](session, parts); |
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if ret then |
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return session.send(ret); |
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end |
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else |
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session.send{from=muc_server, "421", session.nick, command, "Unknown command"}; |
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return module:log("debug", "Unknown command: %s", command); |
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end |
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end |
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function session.send(data) |
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if type(data) == "string" then |
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return conn:write(data.."\r\n"); |
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elseif type(data) == "table" then |
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local line = build_line(data); |
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module:log("debug", line); |
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conn:write(line.."\r\n"); |
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end |
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end |
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end |
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if data then |
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session.data(data); |
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end |
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end |
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function irc_listener.ondisconnect(conn, error) |
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local session = sessions[conn]; |
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if session then |
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for _, room in pairs(session.rooms) do |
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room:leave("Disconnected"); |
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end |
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if session.nick then |
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nicks[session.nick] = nil; |
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end |
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if session.full_jid then |
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jids[session.full_jid] = nil; |
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end |
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if session.username then |
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usernames[session.username] = nil; |
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end |
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end |
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sessions[conn] = nil; |
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end |
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local function nick_inuse(nick) |
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if nicks[nick] then return true else return false end |
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end |
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local function check_username(un) |
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local count = 0; |
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local result; |
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for name, given in pairs(usernames) do |
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if un == given then count = count + 1; end |
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end |
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result = count + 1; |
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if count > 0 then return tostring(un)..tostring(result); else return tostring(un); end |
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end |
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local function set_t_data(session, full_jid) |
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session.full_jid = full_jid; |
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jids[full_jid] = session; |
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jids[full_jid]["ar_last"] = {}; |
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jids[full_jid]["nicks_changing"] = {}; |
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if session.nick then nicks[session.nick] = session; end |
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end |
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local function send_motd(session) |
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local nick = session.nick; |
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if session.username and session.nick then -- send MOTD only if username and nick are set |
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session.send{from = muc_server, "001", nick, "Welcome in the IRC to MUC XMPP Gateway, "..nick}; |
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session.send{from = muc_server, "002", nick, "Your host is "..muc_server.." running Prosody "..prosody.version}; |
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session.send{from = muc_server, "003", nick, "This server was created the "..os.date(nil, prosody.start_time)} |
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session.send{from = muc_server, "004", nick, table.concat({muc_server, "mod_ircd(alpha-0.8)", "i", "aoqv"}, " ")}; |
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session.send((":%s %s %s %s :%s"):format(muc_server, "005", nick, "CHANTYPES=# PREFIX=(qaov)~&@+", "are supported by this server")); |
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session.send((":%s %s %s %s :%s"):format(muc_server, "005", nick, "STATUSMSG=~&@+", "are supported by this server")); |
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session.send{from = muc_server, "375", nick, "- "..muc_server.." Message of the day -"}; |
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session.send{from = muc_server, "372", nick, "-"}; |
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session.send{from = muc_server, "372", nick, "- Please be warned that this is only a partial irc implementation,"}; |
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session.send{from = muc_server, "372", nick, "- it's made to facilitate users transiting away from irc to XMPP."}; |
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session.send{from = muc_server, "372", nick, "-"}; |
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session.send{from = muc_server, "372", nick, "- Prosody is _NOT_ an IRC Server and it never will."}; |
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session.send{from = muc_server, "372", nick, "- We also would like to remind you that this plugin is provided as is,"}; |
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session.send{from = muc_server, "372", nick, "- it's still an Alpha and it's still a work in progress, use it at your sole"}; |
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session.send{from = muc_server, "372", nick, "- risk as there's a not so little chance something will break."}; |
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session.send{from = nick, "MODE", nick, "+i"}; -- why -> Invisible mode setting, |
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end -- enforce by default on most servers (since the source host doesn't show it's sensible to have it "set") |
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end |
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function commands.NICK(session, args) |
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local nick = args[1]; |
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nick = nick:gsub("[^%w_]",""); |
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if session.nick and not nick_inuse(nick) then -- changing nick |
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local oldnick = session.nick; |
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-- update and replace session data |
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session.nick = nick; |
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nicks[oldnick] = nil; |
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nicks[nick] = session; |
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session.send{from=oldnick.."!"..nicks[nick].username, "NICK", nick}; |
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-- broadcast changes if required |
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if session.rooms then |
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session.nicks_changing[nick] = { oldnick, session.username }; |
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for id, room in pairs(session.rooms) do room:change_nick(nick); end |
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session.nicks_changing[nick] = nil; |
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end |
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return; |
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elseif nick_inuse(nick) then |
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session.send{from=muc_server, "433", nick, "The nickname "..nick.." is already in use"}; return; |
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end |
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session.nick = nick; |
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session.type = "c2s"; |
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nicks[nick] = session; |
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-- Some choppy clients send in NICK before USER, that needs to be handled |
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if session.username then |
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set_t_data(session, jid.join(session.username, component_jid, "ircd")); |
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end |
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send_motd(session); |
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end |
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function commands.USER(session, params) |
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local username = params[1]; |
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if not session.has_un then |
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local un_checked = check_username(username); |
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usernames[un_checked] = username; |
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session.username = un_checked; |
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session.has_un = true; |
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if not session.full_jid then |
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set_t_data(session, jid.join(session.username, component_jid, "ircd")); |
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end |
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else |
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return session.send{from=muc_server, "462", "USER", "You may not re-register."} |
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end |
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send_motd(session); |
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end |
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function commands.USERHOST(session, params) -- can show only users on the gateway. Needed for some clients to determinate self hostmask. |
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local nick = params[1]; |
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if not nick then session.send{from=muc_server, "461", "USERHOST", "Not enough parameters"}; return; end |
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if nicks[nick] and nicks[nick].nick and nicks[nick].username then |
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session.send{from=muc_server, "302", session.nick, nick.."=+"..nicks[nick].username}; return; |
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else |
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return; |
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end |
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end |
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local function mode_map(am, rm, nicks) |
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local rnick; |
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local c_modes; |
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c_modes = aff_modemap[am]..role_modemap[rm] |
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rnick = string.rep(nicks.." ", c_modes:len()) |
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if c_modes == "" then return nil, nil end |
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return c_modes, rnick |
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end |
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function commands.JOIN(session, args) |
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local channel = args[1]; |
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if not channel then return end |
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local room_jid = irc2muc(channel); |
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if not jids[session.full_jid].ar_last[room_jid] then jids[session.full_jid].ar_last[room_jid] = {}; end |
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local room, err = c:join_room(room_jid, session.nick, { source = session.full_jid } ); |
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if not room then |
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return ":"..muc_server.." ERR :Could not join room: "..err |
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end |
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session.rooms[channel] = room; |
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room.session = session; |
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if session.nicks_changing[session.nick] then -- my own nick is changing |
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commands.NAMES(session, channel); |
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else |
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session.send{from=session.nick.."!"..session.username, "JOIN", channel}; |
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if room.subject then |
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session.send{from=muc_server, 332, session.nick, channel, room.subject}; |
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end |
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commands.NAMES(session, channel); |
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end |
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room:hook("subject-changed", function(changed) |
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session.send{from=changed.by.nick, "TOPIC", channel, changed.to or ""} |
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end); |
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room:hook("message", function(event) |
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if not event.body then return end |
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local nick, body = event.nick, event.body; |
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if nick ~= session.nick then |
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if body:sub(1,4) == "/me " then |
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body = "\1ACTION ".. body:sub(5) .. "\1" |
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end |
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local type = event.stanza.attr.type; |
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session.send{from=nick, "PRIVMSG", type == "groupchat" and channel or nick, body}; |
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--FIXME PM's probably won't work |
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end |
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end); |
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room:hook("presence", function(ar) |
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local c_modes; |
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local rnick; |
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if ar.nick and not jids[session.full_jid].ar_last[ar.room_jid][ar.nick] then jids[session.full_jid].ar_last[ar.room_jid][ar.nick] = {} end |
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local x_ar = ar.stanza:get_child("x", "http://jabber.org/protocol/muc#user") |
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if x_ar then |
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local xar_item = x_ar:get_child("item") |
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if xar_item and xar_item.attr and ar.stanza.attr.type ~= "unavailable" then |
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if xar_item.attr.affiliation and xar_item.attr.role then |
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if not jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["affiliation"] and |
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not jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["role"] then |
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jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["affiliation"] = xar_item.attr.affiliation |
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jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["role"] = xar_item.attr.role |
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n_self_changing = nicks[ar.nick] and nicks[ar.nick].nicks_changing and nicks[ar.nick].nicks_changing[ar.nick] |
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if n_self_changing then return; end |
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c_modes, rnick = mode_map(xar_item.attr.affiliation, xar_item.attr.role, ar.nick); |
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if c_modes and rnick then session.send((":%s MODE %s +%s"):format(muc_server, channel, c_modes.." "..rnick)); end |
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else |
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c_modes, rnick = mode_map(jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["affiliation"], jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["role"], ar.nick); |
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if c_modes and rnick then session.send((":%s MODE %s -%s"):format(muc_server, channel, c_modes.." "..rnick)); end |
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jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["affiliation"] = xar_item.attr.affiliation |
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jids[session.full_jid].ar_last[ar.room_jid][ar.nick]["role"] = xar_item.attr.role |
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n_self_changing = nicks[ar.nick] and nicks[ar.nick].nicks_changing and nicks[ar.nick].nicks_changing[ar.nick] |
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if n_self_changing then return; end |
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c_modes, rnick = mode_map(xar_item.attr.affiliation, xar_item.attr.role, ar.nick); |
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if c_modes and rnick then session.send((":%s MODE %s +%s"):format(muc_server, channel, c_modes.." "..rnick)); end |
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end |
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end |
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end |
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end |
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end, -1); |
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end |
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c:hook("groupchat/joined", function(room) |
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local session = room.session or jids[room.opts.source]; |
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local channel = "#"..room.jid:match("^(.*)@"); |
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|
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room:hook("occupant-joined", function(nick) |
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if session.nicks_changing[nick.nick] then |
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session.send{from=session.nicks_changing[nick.nick][1].."!"..(session.nicks_changing[nick.nick][2] or "xmpp"), "NICK", nick.nick}; |
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session.nicks_changing[nick.nick] = nil; |
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else |
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session.send{from=nick.nick.."!"..(nicks[nick.nick] and nicks[nick.nick].username or "xmpp"), "JOIN", channel}; |
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end |
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end); |
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room:hook("occupant-left", function(nick) |
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if jids[session.full_jid] then jids[session.full_jid].ar_last[nick.jid:match("^(.*)/")][nick.nick] = nil; end |
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local status_code = |
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nick.presence:get_child("x","http://jabber.org/protocol/muc#user") and |
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nick.presence:get_child("x","http://jabber.org/protocol/muc#user"):get_child("status") and |
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nick.presence:get_child("x","http://jabber.org/protocol/muc#user"):get_child("status").attr.code; |
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|
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|
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if status_code == "303" then |
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local newnick = |
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nick.presence:get_child("x","http://jabber.org/protocol/muc#user") and |
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nick.presence:get_child("x","http://jabber.org/protocol/muc#user"):get_child("item") and |
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nick.presence:get_child("x","http://jabber.org/protocol/muc#user"):get_child("item").attr.nick; |
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|
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session.nicks_changing[newnick] = { nick.nick, (nicks[nick.nick] and nicks[nick.nick].username or "xmpp") }; return; |
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end |
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|
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for id, data in pairs(session.nicks_changing) do |
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if data[1] == nick.nick then return; end |
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end |
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session.send{from=nick.nick.."!"..(nicks[nick.nick] and nicks[nick.nick].username or "xmpp"), "PART", channel}; |
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end); |
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end); |
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|
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function commands.NAMES(session, channel) |
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local nicks = { }; |
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if type(channel) == "table" then channel = channel[1] end |
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|
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local room = session.rooms[channel]; |
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|
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local symbols_map = { |
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owner = "~", |
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administrator = "&", |
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moderator = "@", |
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member = "+" |
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} |
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|
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if not room then return end |
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-- TODO Break this out into commands.NAMES |
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for nick, n in pairs(room.occupants) do |
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if n.affiliation == "owner" and n.role == "moderator" then |
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nick = symbols_map[n.affiliation]..nick; |
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elseif n.affiliation == "administrator" and n.role == "moderator" then |
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nick = symbols_map[n.affiliation]..nick; |
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elseif n.affiliation == "member" and n.role == "moderator" then |
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nick = symbols_map[n.role]..nick; |
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elseif n.affiliation == "member" and n.role == "partecipant" then |
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nick = symbols_map[n.affiliation]..nick; |
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elseif n.affiliation == "none" and n.role == "moderator" then |
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nick = symbols_map[n.role]..nick; |
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end |
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table.insert(nicks, nick); |
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end |
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nicks = table.concat(nicks, " "); |
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session.send((":%s 353 %s = %s :%s"):format(muc_server, session.nick, channel, nicks)); |
|
session.send((":%s 366 %s %s :End of /NAMES list."):format(muc_server, session.nick, channel)); |
|
session.send(":"..muc_server.." 353 "..session.nick.." = "..channel.." :"..nicks); |
|
end |
|
|
|
function commands.PART(session, args) |
|
local channel, part_message = unpack(args); |
|
local room = channel and nodeprep(channel:match("^#(%w+)")) or nil; |
|
if not room then return end |
|
channel = channel:match("^([%S]*)"); |
|
session.rooms[channel]:leave(part_message); |
|
jids[session.full_jid].ar_last[room.."@"..muc_server] = nil; |
|
session.send{from=session.nick.."!"..session.username, "PART", channel}; |
|
end |
|
|
|
function commands.PRIVMSG(session, args) |
|
local channel, message = unpack(args); |
|
if message and #message > 0 then |
|
if message:sub(1,8) == "\1ACTION " then |
|
message = "/me ".. message:sub(9,-2) |
|
end |
|
message = utf8_clean(message); |
|
if channel:sub(1,1) == "#" then |
|
if session.rooms[channel] then |
|
module:log("debug", "%s sending PRIVMSG \"%s\" to %s", session.nick, message, channel); |
|
session.rooms[channel]:send_message(message); |
|
end |
|
else -- private message |
|
local nick = channel; |
|
module:log("debug", "PM to %s", nick); |
|
for channel, room in pairs(session.rooms) do |
|
module:log("debug", "looking for %s in %s", nick, channel); |
|
if room.occupants[nick] then |
|
module:log("debug", "found %s in %s", nick, channel); |
|
local who = room.occupants[nick]; |
|
-- FIXME PMs in verse |
|
--room:send_private_message(nick, message); |
|
local pm = st.message({type="chat",to=who.jid}, message); |
|
module:log("debug", "sending PM to %s: %s", nick, tostring(pm)); |
|
room:send(pm) |
|
break |
|
end |
|
end |
|
end |
|
end |
|
end |
|
|
|
function commands.PING(session, args) |
|
session.send{from=muc_server, "PONG", args[1]}; |
|
end |
|
|
|
function commands.TOPIC(session, message) |
|
if not message then return end |
|
local channel, topic = message[1], message[2]; |
|
channel = utf8_clean(channel); |
|
topic = utf8_clean(topic); |
|
if not channel then return end |
|
local room = session.rooms[channel]; |
|
|
|
if topic then room:set_subject(topic); end |
|
end |
|
|
|
function commands.WHO(session, args) |
|
local channel = args[1]; |
|
if session.rooms[channel] then |
|
local room = session.rooms[channel] |
|
for nick in pairs(room.occupants) do |
|
session.send{from=muc_server, 352, session.nick, channel, nick, nick, muc_server, nick, "H", "0 "..nick} |
|
end |
|
session.send{from=muc_server, 315, session.nick, channel, "End of /WHO list"}; |
|
end |
|
end |
|
|
|
function commands.MODE(session, args) -- Empty command |
|
end |
|
|
|
function commands.QUIT(session, args) |
|
session.send{"ERROR", "Closing Link: "..session.nick}; |
|
for _, room in pairs(session.rooms) do |
|
room:leave(args[1]); |
|
end |
|
jids[session.full_jid] = nil; |
|
nicks[session.nick] = nil; |
|
usernames[session.username] = nil; |
|
sessions[session.conn] = nil; |
|
session:close(); |
|
end |
|
|
|
function commands.RAW(session, data) -- Empty command |
|
end |
|
|
|
module:provides("net", { |
|
name = "ircd"; |
|
listener = irc_listener; |
|
default_port = 7000; |
|
});
|
|
|