diff options
Diffstat (limited to '')
-rw-r--r-- | utils/upgrade/upgrade-4-to-5.lua.in | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/utils/upgrade/upgrade-4-to-5.lua.in b/utils/upgrade/upgrade-4-to-5.lua.in new file mode 100644 index 0000000..7955e96 --- /dev/null +++ b/utils/upgrade/upgrade-4-to-5.lua.in @@ -0,0 +1,87 @@ +-- 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) |