1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
local cqueues = require("cqueues")
local socket = require("cqueues.socket")
local condition = require("cqueues.condition")
local std = require("posix.unistd")
local stdio = require("posix.stdio")
local dkjson = require("dkjson")
local fs = require("fs")
local fifo = require("fifo")
local mom = require("mom")
function irc_dump(fifo, socket)
for data in fifo:iter() do
data = emit_message(data)
if not string.match(data, "[\r\n]") and #string <= 510 then
socket:write(data .. "\r\n")
end
end
end
function parse_message(data)
if string.match(data, "[\0\r\n]") then return nil, "illegal character" end
local pos = 1
local prefix
local command
local params = {}
if string.match(data, "^:") then
prefix, pos = string.match(data, "^:([^ ]+)()")
end
command, pos = string.match(data, "([^ ]+)()", pos)
while pos < #data do
local start, param
start, param, pos = string.match(data, "()([^ ]+)()", pos)
if not start then break end
if string.sub(param, 1, 1) == ":" then
table.insert(params, string.sub(data, start + 1))
break
else
table.insert(params, param)
end
end
return { params = params, command = command, prefix = prefix }
end
function emit_message(message)
local out = {}
if message.prefix then
table.insert(out, message.prefix)
table.insert(out, " ")
end
table.insert(out, message.command)
for i, v in ipairs(message.params or {}) do
assert(not string.match(i, "[\0\r\n]"))
if i == #(message.params or {}) then
table.insert(out, " :")
table.insert(out, v)
else
assert(not string.match(v, "^:"))
table.insert(out, " ")
table.insert(out, v)
end
end
return table.concat(out)
end
local irc_handlers = {}
function handle_ed(loop, in_queue, out_queue, command)
local ed_out = { std.pipe() }
if not (ed_out[1] and ed_out[2]) then return nil, "can't create pipe" end
local ed_in = { std.pipe() }
if not (ed_in[1] and ed_in[2]) then return nil, "can't create pipe" end
local pid, err = std.fork()
if not pid then return nil, err end
if pid == 0 then
std.close(ed_out[1])
std.close(ed_in[2])
std.dup2(ed_in[1], std.STDIN_FILENO)
std.dup2(ed_out[2], std.STDOUT_FILENO)
std.execp(command[1], { select(2, table.unpack(command)) })
os.exit(100)
else
loop:wrap(function ()
local out = fs.new(ed_in[2], "w")
while true do
local x = fifo.get(in_queue)
print("ed: got " .. x)
out:write(x .. "\n")
end
end)
loop:wrap(function ()
local inp = fs.new(ed_out[1])
for l in inp:lines() do
fifo.put(out_queue, l)
end
end)
end
end
function irc_handlers.PING(state, line)
fifo.put(state.queue, { command = "PONG", params = line.params })
end
function irc_handlers._001(state, line)
state.nick = line.params[1]
fifo.put(state.queue, { command = "JOIN", params = { state.channel } })
end
function irc_handlers.PRIVMSG(state, line)
-- fifo.put(state.queue, { command = "NOTICE", params = {
-- state.channel,
-- "A! " .. line.params[2]
-- } })
fifo.put(state.to_ed, line.params[2])
end
function irc_connect(loop, host, config)
local state = {
queue = fifo.new(),
nick = config.nick or "ed1bot",
command = config.command,
}
-- populate channels
-- TODO good
for k in pairs(config.channels or { ["#ed1bot"] = {} }) do
state.channel = k
break
end
local sock = assert(socket.connect(host))
sock:starttls()
loop:wrap(function () irc_dump(state.queue, sock) end)
loop:wrap(function ()
for raw_line in sock:lines("*l") do -- TODO set line length
local line = parse_message(raw_line)
-- TODO assert line or something
if not line then
print("bad line! " .. raw_line)
line = { command = "BADLINE", params = { line } }
end
print(dkjson.encode(parse_message(raw_line)))
local command = (tonumber(line.command) and "_" or "") .. line.command
if irc_handlers[command] then
irc_handlers[command](state, line)
end
end
os.exit(0)
end)
loop:wrap(function ()
local f = fs.new(0)
for line in f:lines() do
print(line)
fifo.put(state.queue, parse_message(line))
end
end)
-- state.to_ed, state.from_ed = fifo.new(), fifo.new()
-- handle_ed(loop, state.to_ed, state.from_ed, { "red" })
state.mom = mom.new(loop)
state.to_ed, state.from_ed = select(2, state.mom:create(state.command))
loop:wrap(function()
while true do
local line = fifo.get(state.from_ed)
if type(line) == "string" then
fifo.put(state.queue, {
command = "PRIVMSG",
params = {
state.channel,
line
}
})
else -- TODO other possible types
fifo.put(state.queue, {
command = "PART",
params = {
state.channel
},
})
-- be annoying
cqueues.poll(10.0)
fifo.put(state.queue, {
command = "JOIN",
params = {
state.channel
},
})
end
end
end)
fifo.put(state.queue, { command = "NICK", params = { "ed1bot" } })
fifo.put(state.queue, { command = "USER", params = { "ed1bot", "0", "*", ":)" } })
end
local main = cqueues.new()
if not arg[1] then
print("usage: edbot [CONFIG]")
os.exit(1)
end
main:wrap(function () irc_connect(main, { host = "localhost", port = 6697 }, dofile(arg[1])) end)
assert(main:loop())
return { parse_message = parse_message }
|
