-- SPDX-License-Identifier: GPL-3.0-or-later local upg_dir = '@systemd_work_dir@/.upgrade-4-to-5' local out = upg_dir..'/kresd.conf.net' local sockets = { { file='kresd.socket', kind='dns' }, { file='kresd-tls.socket', kind='tls' }, { file='kresd-doh.socket', kind='doh2' }, { file='kresd-webmgmt.socket', kind='webmgmt' }, } -- globals addr_port = {} outfile = io.open(out, 'w') if outfile == nil then -- this is technicaly an error, but upgrade script shouldn't fail in scriptlets os.exit(0) -- make no changes and exit end outfile:write("-- Suggested network interface configuration\n") outfile:write("-- See https://knot-resolver.readthedocs.io/en/stable/upgrading.html\n\n") outfile:write("-- Please remove any unused or undesired interfaces and add them to\n") outfile:write("-- @etc_dir@/kresd.conf\n\n") local function write_net_listen(addr, port, kind) -- make sure (addr, port) combination is unique for _, val in ipairs(addr_port) do if val.addr == addr and val.port == port then return end end table.insert(addr_port, { addr=addr, port=port }) outfile:write( "net.listen('"..addr.."', "..tostring(port).. ", { kind = '"..kind.."', freebind = true })\n") end local function convert(line, kind, ipv6only) local patterns = { '^[^=]+=(%d+%.%d+%.%d+%.%d+):(%d+)', -- IPv4 '^[^=]+=%[([^%]]+)%]:(%d+)', -- IPv6 '^[^=]+=(/.*)', -- UNIX } -- Datagram is either implied (dns) or unsupported (tls/doh/webmgmt) if not line:match('^Listen.*Stream') then return end for _, pattern in ipairs(patterns) do local addr, port = line:match(pattern) if addr ~= nil then write_net_listen(addr, port, kind) if not ipv6only then if addr:match('^::$') then write_net_listen('0.0.0.0', port, kind) end if addr:match('^::1$') then write_net_listen('127.0.0.1', port, kind) end end end end return end for _, socket in pairs(sockets) do local ipv6only = false local ipv6only_f = io.open(upg_dir..'/'..socket.file..'.v6only', 'r') if ipv6only_f ~= nil then ipv6only = true io.close(ipv6only_f) end local sockinfo = io.open(upg_dir..'/'..socket.file, 'r') if sockinfo ~= nil then for line in sockinfo:lines() do convert(line, socket.kind, ipv6only) end end end outfile:write("\n") io.close(outfile) os.exit(0)