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
|
-- SPDX-License-Identifier: GPL-3.0-or-later
local ffi = require('ffi')
local C = ffi.C
local function count_sockets()
local dns_socks = 0
local control_socks = 0
for _, socket in ipairs(net.list()) do
if socket.kind == 'control' then
control_socks = control_socks + 1
elseif (socket.kind == 'dns' or
socket.kind == 'xdp' or
socket.kind == 'tls' or
socket.kind == 'doh_legacy' or
socket.kind == 'doh2') then
dns_socks = dns_socks + 1
end
end
return dns_socks, control_socks
end
local n_dns_socks, n_control_socks = count_sockets()
-- Check and set control sockets path
worker.control_path = worker.control_path or (worker.cwd .. '/control/')
-- Bind to control socket by default
if n_control_socks == 0 and not env.KRESD_NO_LISTEN then
local path = worker.control_path..worker.pid
local ok, err = pcall(net.listen, path, nil, { kind = 'control' })
if not ok then
log_warn(C.LOG_GRP_NETWORK, 'bind to '..path..' failed '..err)
end
end
-- Listen on localhost
if n_dns_socks == 0 and not env.KRESD_NO_LISTEN then
local ok, err = pcall(net.listen, '127.0.0.1')
if not ok then
error('bind to 127.0.0.1@53 '..err)
end
-- Binding to other ifaces may fail
ok, err = pcall(net.listen, '127.0.0.1', 853)
if not ok then
log_info(ffi.C.LOG_GRP_NETWORK, 'bind to 127.0.0.1@853 '..err)
end
ok, err = pcall(net.listen, '::1')
if not ok then
log_info(ffi.C.LOG_GRP_NETWORK, 'bind to ::1@53 '..err)
end
ok, err = pcall(net.listen, '::1', 853)
if not ok then
log_info(ffi.C.LOG_GRP_NETWORK, 'bind to ::1@853 '..err)
end
-- Exit when kresd isn't listening on any interfaces
n_dns_socks, _ = count_sockets()
if n_dns_socks == 0 then
panic('not listening on any interface, exiting...')
end
end
-- Open cache if not set/disabled
if not cache.current_size then
cache.size = 100 * MB
end
-- If no addresses for root servers are set, load them from the default file
if C.kr_zonecut_is_empty(kres.context().root_hints) then
_hint_root_file()
end
|
