130 lines
3.4 KiB
Nix
130 lines
3.4 KiB
Nix
|
|
{pkgs, config, ...}:
|
|
|
|
###### interface
|
|
let
|
|
inherit (pkgs.lib) mkOption mkIf;
|
|
|
|
options = {
|
|
services = {
|
|
openvpn = {
|
|
enable = mkOption {
|
|
default = false;
|
|
description = "
|
|
Whether to enable the Secure Shell daemon, which allows secure
|
|
remote logins.
|
|
";
|
|
};
|
|
servers = mkOption {
|
|
example = [
|
|
{
|
|
id = "server-simplest";
|
|
config = ''
|
|
# Most simple configuration: http://openvpn.net/index.php/documentation/miscellaneous/static-key-mini-howto.html.
|
|
# server :
|
|
dev tun
|
|
ifconfig 10.8.0.1 10.8.0.2
|
|
secret static.key
|
|
'';
|
|
up = "ip route add ..!";
|
|
down = "ip route add ..!";
|
|
}
|
|
{
|
|
id = "client-simplest";
|
|
config = ''
|
|
#client:
|
|
#remote myremote.mydomain
|
|
#dev tun
|
|
#ifconfig 10.8.0.2 10.8.0.1
|
|
#secret static.key
|
|
'';
|
|
}
|
|
{
|
|
id = "server-scalable";
|
|
config = ''
|
|
multiple clienst
|
|
see example file found in http://openvpn.net/index.php/documentation/howto.html
|
|
'';
|
|
}
|
|
{
|
|
id = "client-scalabe";
|
|
config = '' dito '';
|
|
}
|
|
];
|
|
default = [];
|
|
description = ''
|
|
openvpn instances to be run. Each will be put into an extra job named openvpn-{id}
|
|
|
|
The up and down properties will be added config line up=/nix/store/xxx-up-script
|
|
automatically for you. If you define at least one of up/down
|
|
"script-security 2" will be prepended to your config.
|
|
|
|
Don't forget to check that the all package sizes can be sent. if scp hangs or such you should set
|
|
--fragment XXX --mssfix YYY.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
###### implementation
|
|
|
|
cfg = config.services.openvpn;
|
|
|
|
inherit (pkgs) openvpn;
|
|
inherit (builtins) hasAttr;
|
|
|
|
PATH="${pkgs.iptables}/sbin:${pkgs.coreutils}/bin:${pkgs.iproute}/sbin:${pkgs.nettools}/sbin";
|
|
|
|
makeOpenVPNJob = cfg :
|
|
let
|
|
upScript = ''
|
|
#!/bin/sh
|
|
exec &> /var/log/openvpn-${cfg.id}-up
|
|
PATH=${PATH}
|
|
${cfg.up}
|
|
'';
|
|
downScript = ''
|
|
#!/bin/sh
|
|
exec &> /var/log/openvpn-${cfg.id}-down
|
|
PATH=${PATH}
|
|
${cfg.down}
|
|
'';
|
|
configFile = pkgs.writeText "openvpn-config-${cfg.id}" ''
|
|
${if hasAttr "up" cfg || hasAttr "down" cfg then "script-security 2" else ""}
|
|
${cfg.config}
|
|
${if hasAttr "up" cfg then "up ${pkgs.writeScript "openvpn-${cfg.id}-up" upScript}" else "" }
|
|
${if hasAttr "down" cfg then "down ${pkgs.writeScript "openvpn-${cfg.id}-down" downScript}" else "" }
|
|
'';
|
|
in {
|
|
name = "openvpn-${cfg.id}";
|
|
|
|
job = ''
|
|
description "OpenVPN-${cfg.id}"
|
|
|
|
start on network-interfaces/started
|
|
stop on network-interfaces/stop
|
|
|
|
|
|
PATH=${pkgs.coreutils}/bin
|
|
|
|
respawn
|
|
script
|
|
exec &> /var/log/openvpn-${cfg.id}
|
|
${openvpn}/sbin/openvpn --config ${configFile}
|
|
end script
|
|
'';
|
|
};
|
|
|
|
in
|
|
|
|
|
|
mkIf cfg.enable {
|
|
require = [
|
|
options
|
|
];
|
|
|
|
services = {
|
|
extraJobs = map makeOpenVPNJob cfg.servers;
|
|
};
|
|
}
|