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local cqueues = require("cqueues")
local socket = require("cqueues.socket")
local errno = require("cqueues.errno")
local condition = require("cqueues.condition")
local loop = cqueues.new()
local host, port, socketpath = ...
--------------------------------------------------------------------------------
-- fifo queue
local fifo = {}
function fifo.new()
local list = {}
list.next = list
list.prev = list
return setmetatable({list = list, condvar = condition.new()}, {__index = fifo})
end
function fifo:enqueue(data)
local node = { data = data}
node.next = self.list.next
node.prev = self.list
self.list.next.prev = node
self.list.next = node
self:signal()
return self
end
function fifo:dequeue()
local node = self.list.prev
self.list.prev = node.prev
self.list.prev.next = node.next
return node.data
end
function fifo:empty()
return self.list == self.list.next
end
function fifo:signal()
self.condvar:signal()
end
function fifo:getcv()
return self.condvar
end
--------------------------------------------------------------------------------
-- irc session
local irc = { callbacks = {} }
function irc.new(nick, username, password, realname)
local self = {
nick = nick or "albotty",
username = username or "albotty",
password = password,
realname = realname or "albotty",
hooks = {},
channels = {},
msgq = fifo.new()
}
return setmetatable(self, { __index = irc })
end
function irc:autojoin(channels)
for _,chan in pairs(channels) do
self.channels[chan] = self.channels[chan] or {}
self.channels[chan].autojoin = true
self.channels[chan].joined = false
end
end
function irc:connect(host, port)
local hostname, password, tls, timeout
if type(host) == "table" then
hostname = host.host
port = host.port
password = host.password
tls = host.tls
timeout = host.timeout
else
hostname = host
end
self.conn = socket.connect(hostname, port)
self.conn:settimeout(timeout or 10)
self:send("NICK %s", self.nick)
self:send("USER %s 0 * :%s", self.username, self.realname)
return self
end
function irc:pollfd()
return self.conn:pollfd()
end
function irc:events()
return self.conn:events()
end
function irc:send(msg, ...)
if select("#", ...) > 0 then
msg = msg:format(...)
end
self:run_hooks("OnSend", msg)
self.conn:write(msg.."\r\n")
self.conn:flush()
end
function irc:send_chat(target, message)
for line in message:gmatch("([^\r\n]+)") do
self:send("PRIVMSG %s :%s", target, line)
end
end
function irc:join(channel)
self.channels[channel] = self.channels[channel] or {}
self.channels[channel].joined = true
self:send("JOIN %s", channel)
end
function irc:hook(event, id, func)
func = func or id
self.hooks[event] = self.hooks[event] or {}
self.hooks[event][id] = func
return self
end
function irc:run_hooks(event, ...)
for id, func in pairs(self.hooks[event] or {}) do
if func(self, ...) then
return true
end
end
end
local function irc_parse(line)
local prefix
local lineStart = 1
if line:sub(1,1) == ":" then
local space = line:find(" ")
prefix = line:sub(2, space-1)
lineStart = space
end
local _, trailToken = line:find("%s+:", lineStart)
local lineStop = line:len()
local trailing
if trailToken then
trailing = line:sub(trailToken + 1)
lineStop = trailToken - 2
end
local params = {}
local _, cmdEnd, cmd = line:find("(%S+)", lineStart)
local pos = cmdEnd + 1
while true do
local _, stop, param = line:find("(%S+)", pos)
if not param or stop > lineStop then
break
end
pos = stop + 1
params[#params + 1] = param
end
if trailing then
params[#params + 1] = trailing
end
return prefix, cmd, params
end
local function parse_prefix(prefix)
local user = {}
if prefix then
user.access, user.nick, user.username, user.host = prefix:match("^([%+@]*)(.+)!(.+)@(.+)$")
end
return user
end
irc.callbacks["001"] = function(self, prefix, me)
self.authed = true
self.nick = me
for name, chan in pairs(self.channels) do
if chan.autojoin then
self:join(name)
end
end
end
irc.callbacks["NICK"] = function(self, prefix, newnick)
local user = parse_prefix(prefix)
if self.nick == user.nick then
self.nick = newnick
end
end
irc.callbacks["NICK"] = function(self, prefix, newnick)
local user = parse_prefix(prefix)
if self.nick == user.nick then
self.nick = newnick
end
self:run_hooks("OnNick", user, newnick)
end
irc.callbacks["PING"] = function(self, prefix, query)
self:send("PONG :%s", query)
end
irc.callbacks["PRIVMSG"] = function(self, prefix, channel, message)
self:run_hooks("OnChat", parse_prefix(prefix), channel, message)
end
irc.callbacks["NOTICE"] = function(self, prefix, channel, message)
self:run_hooks("OnNotice", parse_prefix(prefix), channel, message)
end
irc.callbacks["JOIN"] = function(self, prefix, channel)
self:run_hooks("OnJoin", parse_prefix(prefix), channel)
end
irc.callbacks["PART"] = function(self, prefix, channel, reason)
local user = parse_prefix(prefix)
self:run_hooks("OnPart", user, channel, reason)
end
irc.callbacks["KICK"] = function(self, prefix, channel, kicked, reason)
self:run_hooks("OnKick", channel, kicked, parse_prefix(prefix), reason)
end
irc.callbacks["QUIT"] = function(self, prefix, message)
local user = parse_prefix(prefix)
self:run_hooks("OnQuit", user, message)
end
-- nick in use
irc.callbacks["432"] = function(self, prefix, target, badnick)
local n,i = string.match(self.nick, "(.*)(%d+)$")
local newnick
newnick = string.format("%s%d",n or self.nick, i+1)
self:send("NICK %s", newnick)
end
irc.callbacks["433"] = irc.callbacks["422"]
-- no topic
irc.callbacks["331"] = function(self, prefix, me, channel)
self:run_hooks("OnTopic", channel, nil)
end
irc.callbacks["332"] = function(self, prefix, me, channel, topic)
self:run_hooks("OnTopic", channel, topic)
end
irc.callbacks["333"] = function(self, prefix, me, channel, nick, time)
self:run_hooks("OnTopicInfo", channel, nick, tonumber(time))
end
irc.callbacks["TOPIC"] = function(self, prefix, channel, topic)
self:run_hooks("OnTopic", channel, topic)
end
-- RPL_UMODEIS
irc.callbacks["221"] = function(self, prefix, user, modes)
self:run_hooks("OnUserMode", modes)
end
-- RPL_CHANNELMODEIS
irc.callbacks["324"] = function(self, prefix, channel, modes)
self:run_hooks("OnChannelMode", channel, modes)
end
irc.callbacks["MODE"] = function(self, prefix, target, modes, ...)
self:run_hooks("OnModeChange", parse_prefix(prefix), target, modes, ...)
end
function irc:handle(line)
local prefix, cmd, params = irc_parse(line)
callback = self.callbacks[cmd]
if type(callback) == "function" then
return callback(self, prefix, table.unpack(params))
else
print("DEBUG: no handler for:", cmd, "prefix:",prefix)
end
end
function irc:step()
local line, why = self.conn:recv("*L")
if not line or #line == 0 then
return nil, why
end
self:handle(line)
return line
end
function irc:loop()
repeat
repeat
local ok, err = self:step()
until not ok
cqueues.poll(self)
until self.conn:eof()
end
function irc:msgq_loop()
while true do
self.msgq:getcv():wait()
local loop = cqueues.new()
loop:wrap(function()
while not self.msgq:empty() do
local m = self.msgq:dequeue()
self:send_chat(m.target, m.message)
cqueues.sleep(1.0)
end
end)
loop:loop()
end
end
function irc:enqueue(target, msg)
self.msgq:enqueue{target=target, message =msg}
end
--------------------------------------------------------------------------
-- sockserver
local sockserver = { callbacks = {}}
function sockserver.new(ircsession, socketpath, timeout)
local path = socketpath or "/tmp/albotty.sock"
local self = {
path = path,
ircsess = ircsession,
socket = socket.listen{path=path},
timeout = timeout,
}
return setmetatable(self, { __index = sockserver })
end
sockserver.callbacks["/msg"] = function(self, data)
local dest,msg = string.match(data or "", "^([^ ]+) (.*)")
if dest then
self.ircsess:enqueue(dest, msg)
return "ok"
end
return "error: msg format"
end
sockserver.callbacks["bye"] = function(serf, data)
return "bye!"
end
function sockserver:run_callback(line)
local cmd = string.match(line, "^([^ ]+)")
local data = string.match(line, "^[^ ]+ (.*)")
if not cmd or type(self.callbacks[cmd]) ~= "function" then
return nil
end
return cmd, self.callbacks[cmd](self, data)
end
function sockserver:loop(loop)
for conn in self.socket:clients(self.timeout) do
loop:wrap(function()
for line in conn:lines("*l") do
print("DEBUG: got line:", line)
local cmd, resp = self:run_callback(line)
if not cmd then
conn:write("error: unknown command\n")
end
if resp then
conn:write(resp.."\n")
end
if cmd == "bye" then
conn:shutdown("w")
break
end
end
end)
end
end
---------------------------------------------------------------------------
-- main
sess = irc.new()
sess:hook("OnChat", function(self, user, channel, message)
print("PRIVMSG:")
print(" nick:", user.nick)
print(" channel:", channel)
print(" message:", message)
if channel == self.nick then
self:send_chat(user.nick, "Hi there")
else
self:send_chat(channel, "Hi "..user.nick)
end
end)
sess:hook("OnJoin", function(self, user, channel)
print("JOIN:")
print(" nick:", user.nick)
print(" channel:", channel)
end)
sess:hook("OnKick", function(self, channel, kicked, user, reason)
print("Kicked:")
print((" %s kicked %s from %s"):format(user.nick, kicked, channel))
if kicked == self.nick then
self:join(channel)
end
end)
sess:autojoin{"#alpine-test", "#alpine"}
sess:connect("172.16.3.54", "6667")
print("CONNECTED!")
local srv = sockserver.new(sess)
loop:wrap(function()
sess:loop()
end)
loop:wrap(function()
sess:msgq_loop()
end)
loop:wrap(function()
srv:loop(loop)
end)
while not loop:empty() do
local ok, err = loop:step()
print("DEBUG: mainloop")
if not ok then
os.remove(srv.path)
error("loop.step: "..err)
end
end
os.remove(srv.path)
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