mirror of
https://github.com/nmasur/dotfiles
synced 2024-09-19 22:54:47 +00:00
86 lines
3.3 KiB
Nix
86 lines
3.3 KiB
Nix
# Transmission is a bittorrent client, which can run in the background for
|
|
# automated downloads with a web GUI.
|
|
|
|
{ config, pkgs, lib, ... }: {
|
|
|
|
config = let
|
|
namespace = config.networking.wireguard.interfaces.wg0.interfaceNamespace;
|
|
vpnIp = lib.strings.removeSuffix "/32"
|
|
(builtins.head config.networking.wireguard.interfaces.wg0.ips);
|
|
in lib.mkIf config.services.transmission.enable {
|
|
|
|
# Setup transmission
|
|
services.transmission = {
|
|
settings = {
|
|
port-forwarding-enabled = false;
|
|
rpc-authentication-required = true;
|
|
rpc-port = 9091;
|
|
rpc-bind-address = "0.0.0.0";
|
|
rpc-username = config.user;
|
|
# This is a salted hash of the real password
|
|
# https://github.com/tomwijnroks/transmission-pwgen
|
|
rpc-password = "{c4c5145f6e18bcd3c7429214a832440a45285ce26jDOBGVW";
|
|
rpc-host-whitelist = config.hostnames.transmission;
|
|
rpc-host-whitelist-enabled = true;
|
|
rpc-whitelist = lib.mkDefault "127.0.0.1"; # Overwritten by Cloudflare
|
|
rpc-whitelist-enabled = true;
|
|
};
|
|
};
|
|
|
|
# Configure Cloudflare DNS to point to this machine
|
|
services.cloudflare-dyndns.domains = [ config.hostnames.transmission ];
|
|
|
|
# Bind transmission to wireguard namespace
|
|
systemd.services.transmission = lib.mkIf config.wireguard.enable {
|
|
bindsTo = [ "netns@${namespace}.service" ];
|
|
requires = [ "network-online.target" "transmission-secret.service" ];
|
|
after = [ "wireguard-wg0.service" "transmission-secret.service" ];
|
|
unitConfig.JoinsNamespaceOf = "netns@${namespace}.service";
|
|
serviceConfig.NetworkNamespacePath = "/var/run/netns/${namespace}";
|
|
};
|
|
|
|
# Create reverse proxy for web UI
|
|
caddy.routes = let
|
|
# Set if the download domain is the same as the Transmission domain
|
|
useDownloadDomain = config.hostnames.download
|
|
== config.hostnames.transmission;
|
|
in lib.mkAfter [{
|
|
group = if useDownloadDomain then "download" else "transmission";
|
|
match = [{
|
|
host = [ config.hostnames.transmission ];
|
|
path = if useDownloadDomain then [ "/transmission*" ] else null;
|
|
}];
|
|
handle = [{
|
|
handler = "reverse_proxy";
|
|
upstreams = [{
|
|
dial = "localhost:${
|
|
builtins.toString config.services.transmission.settings.rpc-port
|
|
}";
|
|
}];
|
|
}];
|
|
}];
|
|
|
|
# Caddy and Transmission both try to set rmem_max for larger UDP packets.
|
|
# We will choose Transmission's recommendation (4 MB).
|
|
boot.kernel.sysctl."net.core.rmem_max" = 4194304;
|
|
|
|
# Allow inbound connections to reach namespace
|
|
systemd.services.transmission-web-netns = lib.mkIf config.wireguard.enable {
|
|
description = "Forward to transmission in wireguard namespace";
|
|
requires = [ "transmission.service" ];
|
|
after = [ "transmission.service" ];
|
|
serviceConfig = {
|
|
Restart = "on-failure";
|
|
TimeoutStopSec = 300;
|
|
};
|
|
wantedBy = [ "multi-user.target" ];
|
|
script = ''
|
|
${pkgs.iproute2}/bin/ip netns exec ${namespace} ${pkgs.iproute2}/bin/ip link set dev lo up
|
|
${pkgs.socat}/bin/socat tcp-listen:9091,fork,reuseaddr exec:'${pkgs.iproute2}/bin/ip netns exec ${namespace} ${pkgs.socat}/bin/socat STDIO "tcp-connect:${vpnIp}:9091"',nofork
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
}
|