infra/common/raito-proxy-aware-nginx.nix
Raito Bezarius c969625b0f fix(sniproxy): outside/inside of infra, the ingress IPs are different
In my infrastructure, the source node is 99::1, outside of my infra,
it's ::1.

All of this machinery was never really meant to be used on this scale,
so oopsie.

We should build our own sniproxy at some point.

Signed-off-by: Raito Bezarius <masterancpp@gmail.com>
2024-08-30 19:01:44 +02:00

36 lines
1.4 KiB
Nix

# This enables an IPv6-only server which is proxied by kurisu.lahfa.xyz to have proper IPv4 logs via PROXY protocol.
{ config, lib, ... }:
let
inherit (lib) mkEnableOption mkIf concatStringsSep;
cfg = config.bagel.raito.v6-proxy-awareness;
# outside of raito infra inside of raito infra
allowedUpstreams = [ "2001:bc8:38ee::1/128" "2001:bc8:38ee:99::1/128" ];
in
{
options.bagel.raito.v6-proxy-awareness.enable = mkEnableOption "the kurisu.lahfa.xyz's sniproxy awareness for NGINX";
config = mkIf cfg.enable {
services.nginx = {
# IPv6-only server
defaultListen = [
{ addr = "[::0]"; proxyProtocol = true; port = 444; ssl = true; }
{ addr = "[::0]"; port = 443; ssl = true; }
{ addr = "[::0]"; port = 80; ssl = false; }
# Private networking
{ addr = "127.0.0.1"; port = 80; ssl = false; }
{ addr = "[::1]"; port = 80; ssl = false; }
];
appendHttpConfig = ''
# Kurisu nodes
${concatStringsSep "\n" (map (up: "set_real_ip_from ${up};") allowedUpstreams)}
real_ip_header proxy_protocol;
'';
};
# Move to nftables if firewall is enabled.
networking.nftables.enable = true;
networking.firewall.extraInputRules = ''
${concatStringsSep "\n" (map (up: "ip6 saddr ${up} tcp dport 444 accept") allowedUpstreams)}
'';
};
}