From e5fc654f50e2b99bcae186962b29c8754f382f3b Mon Sep 17 00:00:00 2001
From: lassulus <lassulus@lassul.us>
Date: Thu, 9 Dec 2021 11:21:06 +0100
Subject: add ACME ca via ca.r

---
 krebs/2configs/acme.nix    | 65 ++++++++++++++++++++++++++++++++++++++++++++++
 krebs/2configs/default.nix |  3 +++
 2 files changed, 68 insertions(+)
 create mode 100644 krebs/2configs/acme.nix

(limited to 'krebs/2configs')

diff --git a/krebs/2configs/acme.nix b/krebs/2configs/acme.nix
new file mode 100644
index 00000000..b5e51a1a
--- /dev/null
+++ b/krebs/2configs/acme.nix
@@ -0,0 +1,65 @@
+# generate intermediate certificate with generate-krebs-intermediate-ca
+{ config, lib, pkgs, ... }: let
+  domain = "ca.r";
+in {
+  security.acme = {
+    acceptTerms = true; # kinda pointless since we never use upstream
+    email = "spam@krebsco.de";
+    certs.${domain}.server = "https://${domain}:1443/acme/acme/directory"; # use 1443 here cause bootstrapping loop
+  };
+  services.nginx = {
+    enable = true;
+    recommendedProxySettings = true;
+    virtualHosts.${domain} = {
+      forceSSL = true;
+      enableACME = true;
+      locations."/" = {
+        proxyPass = "https://localhost:1443";
+      };
+    };
+  };
+  krebs.secret.files.krebsAcme = {
+    path = "/var/lib/step-ca/intermediate_ca.key";
+    owner.name = "root";
+    mode = "1444";
+    source-path = builtins.toString <secrets> + "/acme_ca.key";
+  };
+  services.step-ca = {
+    enable = true;
+    intermediatePasswordFile = "/dev/null";
+    address = "0.0.0.0";
+    port = 1443;
+    settings = {
+      root = pkgs.writeText "root.crt" config.krebs.ssl.rootCA;
+      crt = pkgs.writeText "intermediate.crt" config.krebs.ssl.intermediateCA;
+      key = "/var/lib/step-ca/intermediate_ca.key";
+      dnsNames = [ domain ];
+      logger.format = "text";
+      db = {
+        type = "badger";
+        dataSource = "/var/lib/step-ca/db";
+      };
+      authority = {
+        provisioners = [{
+          type = "ACME";
+          name = "acme";
+          forceCN = true;
+        }];
+        claims = {
+          maxTLSCertDuration = "2160h";
+          defaultTLSCertDuration = "2160h";
+        };
+        backdate = "1m0s";
+      };
+      tls = {
+        cipherSuites = [
+          "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256"
+          "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256"
+        ];
+        minVersion = 1.2;
+        maxVersion = 1.3;
+        renegotiation = false;
+      };
+    };
+  };
+}
diff --git a/krebs/2configs/default.nix b/krebs/2configs/default.nix
index 8a84d446..ad77e658 100644
--- a/krebs/2configs/default.nix
+++ b/krebs/2configs/default.nix
@@ -16,6 +16,9 @@ with import <stockholm/lib>;
   krebs.enable = true;
   krebs.tinc.retiolum.enable = mkDefault true;
 
+  # trust krebs ACME CA
+  krebs.ssl.trustIntermediate = true;
+
   krebs.build.user = mkDefault config.krebs.users.krebs;
 
   networking.hostName = config.krebs.build.host.name;
-- 
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