From 831a55f03e2350835871aa12f70f2fe1aa2b51a6 Mon Sep 17 00:00:00 2001
From: yomaq <yomaq@bsjm.xyz>
Date: Thu, 16 May 2024 23:43:53 -0500
Subject: [PATCH] cleanup + cut down initrd kernel modules

---
 modules/hosts/initrd-tailscale/nixos.nix | 73 ++++++++----------------
 1 file changed, 24 insertions(+), 49 deletions(-)

diff --git a/modules/hosts/initrd-tailscale/nixos.nix b/modules/hosts/initrd-tailscale/nixos.nix
index db9b447..98163ee 100644
--- a/modules/hosts/initrd-tailscale/nixos.nix
+++ b/modules/hosts/initrd-tailscale/nixos.nix
@@ -6,8 +6,6 @@
 ### authkeys expired every 3 months and will need to be manually updated.
 ### I have had weird results when trying to overwrite existing key files in initrd, often times only re-naming to a fresh file name appears to work.
 
-
-
 with lib;
 let
   cfg = config.yomaq.initrd-tailscale;
@@ -25,6 +23,7 @@ in
           included. Service is killed when stage-1 boot is finished.
         '';
       };
+      
       package = lib.mkPackageOptionMD pkgs "tailscale" {};
 
       authKeyFile = mkOption {
@@ -35,6 +34,7 @@ in
           A file containing the auth key.
         '';
       };
+
       extraUpFlags = mkOption {
         description = lib.mdDoc "Extra flags to pass to {command}`tailscale up`.";
         type = types.listOf types.str;
@@ -56,39 +56,39 @@ in
     in  
     mkIf (config.boot.initrd.network.enable && cfg.enable) {
 
-
-    boot.initrd.kernelModules = [ "tun" "tap" ];
+    boot.initrd.kernelModules = [ "tun" ];
     boot.initrd.availableKernelModules = [
-      "ip6_tables"
-      "ip6t_rpfilter"
-      "ip_tables"
-      "ipt_rpfilter"
-      "libcrc32c"
-      "nf_conntrack"
-      "nf_conntrack_netlink"
-      "nf_defrag_ipv4"
-      "nf_defrag_ipv6"
-      "nf_nat"
-      "nf_reject_ipv4"
-      "nf_reject_ipv6"
-      "nf_tables"
+      # "ip6_tables"
+      # "ip6t_rpfilter"
+      # "ip_tables"
+      # "ipt_rpfilter"
+      # "libcrc32c"
+      # "nf_conntrack"
+      # "nf_conntrack_netlink"
+      # "nf_defrag_ipv4"
+      # "nf_defrag_ipv6"
+      # "nf_nat"
+      # "nfnetlink"
+      # "nf_reject_ipv4"
+      # "nf_reject_ipv6"
+      # "nf_tables"
+      # "tun"
+      # "x_tables"
+
+      "xt_mark"
       "nft_chain_nat"
       "nft_compat"
-      "nfnetlink"
       "nft_compat"
-      "tun"
-      "x_tables"
       "xt_LOG"
       "xt_MASQUERADE"
       "xt_addrtype"
       "xt_comment"
       "xt_conntrack"
-      "xt_mark"
       "xt_multiport"
       "xt_pkttype"
       "xt_tcpudp"
     ];
-    # [...]
+
     boot.initrd.extraUtilsCommands = ''
       copy_bin_and_libs ${cfg.package}/bin/.tailscaled-wrapped
       copy_bin_and_libs ${cfg.package}/bin/.tailscale-wrapped
@@ -98,32 +98,10 @@ in
       copy_bin_and_libs ${iptables-static}/bin/xtables-legacy-multi
       copy_bin_and_libs ${iptables-static}/bin/xtables-nft-multi
     '';
-    ## this didn't work for extraUtilsCommands
-      # ${lib.concatMapStringsSep "\n" (file: ''
-      #   cp "${file}" /etc/ssl/certs/
-      # '') config.security.pki.certificateFiles}
-
 
+    age.secrets.tailscaleOAuthKeyAcceptSsh.file = (inputs.self + /secrets/tailscaleOAuthKeyAcceptSsh.age);
 
-    # boot.initrd.systemd.storePaths = [
-    #   # "${lib.getExe cfg.package}"
-    #   "${lib.getExe pkgs.kmod}"
-    #   "${cfg.package}}/bin/tailscale"
-    # ];
-
-
-    age.secrets.tailscaleOAuthKeyAcceptSsh.file = ( inputs.self + /secrets/tailscaleOAuthKeyAcceptSsh.age);
-
-    boot.initrd.secrets = {
-      "/etc/tauthkey" = cfg.authKeyFile;
-    };
-
-    # boot.initrd.extraFiles = {
-    #   "/etc/ssl/certs/".source = config.security.pki.certificateFiles;
-    # };
-    # boot.initrd.extraUtilsCommandsTest = mkIf (!config.boot.initrd.systemd.enable) ''
-    #   $out/bin/tailscale --version
-    # '';
+    boot.initrd.secrets."/etc/tauthkey" = cfg.authKeyFile;
 
     boot.initrd.network.postCommands = mkIf (!config.boot.initrd.systemd.enable) ''
       .tailscaled-wrapped --state=mem: &
@@ -132,9 +110,7 @@ in
     # oathkeys need dns and trusted CA's.
     # echo "nameserver 1.1.1.1" >> /etc/resolv.conf &
 
-
   #   boot.initrd.systemd.enable = true;
-
   #   boot.initrd.systemd.services.tailscaled = {
   #     wantedBy = [ "initrd.target" ];
   #     path = [ pkgs.kmod ];
@@ -142,7 +118,6 @@ in
   #     serviceConfig.ExecStart = ".tailscaled-wrapped";
   #     serviceConfig.Type = "notify";
   #   };
-
   #   boot.initrd.systemd.services.tailscale = {
   #     wantedBy = [ "initrd.target" ];
   #     after = [ "tailscaled.service" ];