tvl-depot/ops/modules/oauth2_proxy.nix

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# Configuration for oauth2_proxy, which is used as a handler for nginx
# auth-request setups.
#
# This module exports a helper function at
# `config.services.depot.oauth2_proxy.withAuth` that can be wrapped
# around nginx server configuration blocks to configure their
# authentication setup.
{ config, depot, pkgs, lib, ... }:
let
description = "OAuth2 proxy to authenticate TVL services";
cfg = config.services.depot.oauth2_proxy;
configFile = pkgs.writeText "oauth2_proxy.cfg" ''
email_domains = [ "*" ]
http_address = "127.0.0.1:${toString cfg.port}"
provider = "keycloak-oidc"
client_id = "oauth2-proxy"
oidc_issuer_url = "https://auth.tvl.fyi/auth/realms/TVL"
reverse_proxy = true
set_xauthrequest = true
'';
# Depend on the Keycloak service if it is running on the same
# machine.
depends_on = lib.optional config.services.keycloak.enable "keycloak.service";
in
{
options.services.depot.oauth2_proxy = {
enable = lib.mkEnableOption description;
port = lib.mkOption {
description = "Port to listen on";
type = lib.types.int;
default = 2884; # "auth"
};
secretsFile = lib.mkOption {
type = lib.types.str;
description = "EnvironmentFile from which to load secrets";
default = config.age.secretsDir + "/oauth2_proxy";
};
};
config = lib.mkIf cfg.enable {
systemd.services.oauth2_proxy = {
inherit description;
after = depends_on;
wants = depends_on;
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Restart = "always";
RestartSec = "5s";
DynamicUser = true;
EnvironmentFile = cfg.secretsFile;
ExecStart = "${pkgs.oauth2-proxy}/bin/oauth2-proxy --config ${configFile}";
};
};
};
}