eda3aa3333
gluon-wan is a sudo-like exec wrapper that switches the process group to gluon-mesh-vpn, making it use the WAN dnsmasq rather than resolving over the mesh. Note that this only affects DNS at the moment. Processes running under gluon-wan will still use the regular mesh IPv6 routing table, and not the WAN routing table. This is not a problem for IPv4, as there is only one IPv4 routing table. Fixes #1575
33 lines
690 B
Lua
Executable File
33 lines
690 B
Lua
Executable File
#!/usr/bin/lua
|
|
|
|
local GROUP = 'gluon-mesh-vpn'
|
|
|
|
local grp = require 'posix.grp'
|
|
local unistd = require 'posix.unistd'
|
|
|
|
if #arg < 1 then
|
|
io.stderr:write('Usage: gluon-wan <command> ...\n')
|
|
os.exit(1)
|
|
end
|
|
|
|
local g = grp.getgrnam(GROUP)
|
|
if not g then
|
|
io.stderr:write(string.format("gluon-wan: unable to find group '%s'\n", GROUP))
|
|
os.exit(1)
|
|
end
|
|
|
|
local ok, err = unistd.setpid('g', g.gr_gid)
|
|
if ok ~= 0 then
|
|
io.stderr:write(string.format("gluon-wan: unable to change to group: %s\n", err))
|
|
os.exit(1)
|
|
end
|
|
|
|
arg[0] = arg[1]
|
|
table.remove(arg, 1)
|
|
print(arg[0], unpack(arg))
|
|
|
|
ok, err = unistd.execp(arg[0], arg)
|
|
|
|
io.stderr:write(string.format("gluon-wan: exec failed: %s\n", err))
|
|
os.exit(1)
|