From 950a735472f2b09b08119ba79f10c54a9efb28e6 Mon Sep 17 00:00:00 2001
From: lassulus <lassulus@lassul.us>
Date: Mon, 3 May 2021 17:59:52 +0200
Subject: l: (re)init echelon.r (with ssh tor unlocking)

---
 lass/1systems/echelon/config.nix                   | 14 +++++++
 lass/1systems/echelon/physical.nix                 | 33 +++++++++++++++
 .../tests/dummy-secrets/initrd/ssh.ed25519_key     |  0
 lass/2configs/tor-initrd.nix                       | 49 ++++++++++++++++++++++
 4 files changed, 96 insertions(+)
 create mode 100644 lass/1systems/echelon/config.nix
 create mode 100644 lass/1systems/echelon/physical.nix
 create mode 100644 lass/2configs/tests/dummy-secrets/initrd/ssh.ed25519_key
 create mode 100644 lass/2configs/tor-initrd.nix

(limited to 'lass')

diff --git a/lass/1systems/echelon/config.nix b/lass/1systems/echelon/config.nix
new file mode 100644
index 000000000..9e72916b3
--- /dev/null
+++ b/lass/1systems/echelon/config.nix
@@ -0,0 +1,14 @@
+{ config, pkgs, ... }:
+{
+  imports = [
+    <stockholm/lass>
+
+    <stockholm/lass/2configs/retiolum.nix>
+    <stockholm/lass/2configs/tor-initrd.nix>
+  ];
+
+  krebs.build.host = config.krebs.hosts.echelon;
+
+  boot.tmpOnTmpfs = true;
+}
+
diff --git a/lass/1systems/echelon/physical.nix b/lass/1systems/echelon/physical.nix
new file mode 100644
index 000000000..fbacc3927
--- /dev/null
+++ b/lass/1systems/echelon/physical.nix
@@ -0,0 +1,33 @@
+{ config, lib, pkgs, modulesPath, ... }:
+{
+  imports = [
+    ./config.nix
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  # Use the GRUB 2 boot loader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.version = 2;
+  boot.loader.grub.efiSupport = true;
+  boot.loader.grub.efiInstallAsRemovable = true;
+  # Define on which hard drive you want to install Grub.
+  boot.loader.grub.device = "/dev/sda"; # or "nodev" for efi only
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ "dm-snapshot" ];
+  boot.initrd.luks.devices.luksroot.device = "/dev/sda3";
+
+  networking.useDHCP = false;
+  networking.interfaces.ens18.useDHCP = true;
+
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/5186edb1-9234-48ae-8679-61facb56b818";
+    fsType = "xfs";
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/56D1-34A0";
+    fsType = "vfat";
+  };
+
+}
diff --git a/lass/2configs/tests/dummy-secrets/initrd/ssh.ed25519_key b/lass/2configs/tests/dummy-secrets/initrd/ssh.ed25519_key
new file mode 100644
index 000000000..e69de29bb
diff --git a/lass/2configs/tor-initrd.nix b/lass/2configs/tor-initrd.nix
new file mode 100644
index 000000000..64e64b5b3
--- /dev/null
+++ b/lass/2configs/tor-initrd.nix
@@ -0,0 +1,49 @@
+{config, pkgs, ... }:
+## unlock command:
+# (pass admin/$host/root;echo) | torify ssh root@$(pass hosts/$host/initrd/hostname) 'cat > /crypt-ramfs/passphrase'
+{
+  boot.initrd.network.enable = true;
+  boot.initrd.network.ssh = {
+    enable = true;
+    port = 22;
+    authorizedKeys = [
+      config.krebs.users.lass.pubkey
+      config.krebs.users.lass-mors.pubkey
+      config.krebs.users.lass-green.pubkey
+    ];
+    hostKeys = [ <secrets/initrd/ssh.ed25519_key> ];
+  };
+  boot.initrd.availableKernelModules = [ "e1000e" ];
+
+  boot.initrd.secrets = {
+    "/etc/tor/onion/bootup" = <secrets/initrd>;
+  };
+
+  boot.initrd.extraUtilsCommands = ''
+    copy_bin_and_libs ${pkgs.tor}/bin/tor
+  '';
+
+  # start tor during boot process
+  boot.initrd.network.postCommands = let
+    torRc = (pkgs.writeText "tor.rc" ''
+      DataDirectory /etc/tor
+      SOCKSPort 127.0.0.1:9050 IsolateDestAddr
+      SOCKSPort 127.0.0.1:9063
+      HiddenServiceDir /etc/tor/onion/bootup
+      HiddenServicePort 22 127.0.0.1:22
+    '');
+  in ''
+    echo "tor: preparing onion folder"
+    # have to do this otherwise tor does not want to start
+    chmod -R 700 /etc/tor
+
+    echo "make sure localhost is up"
+    ip a a 127.0.0.1/8 dev lo
+    ip link set lo up
+
+    echo "tor: starting tor"
+    tor -f ${torRc} --verify-config
+    tor -f ${torRc} &
+  '';
+}
+
-- 
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