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sad: this will be useless, but it has been a nice journey.
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oddlama
parent
92cf272cd1
commit
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3 changed files with 86 additions and 69 deletions
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@ -33,7 +33,7 @@ in {
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rekey.agePlugins = with pkgs; [age-plugin-yubikey];
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rekey.secrets.yolo.file = ./yolo.age;
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environment.etc."YOLO" = config.rekey.secrets.yolo.path;
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environment.etc."YOLO".source = config.rekey.secrets.yolo.path;
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home-manager = {
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useGlobalPkgs = true;
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@ -6,79 +6,98 @@
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...
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}:
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with lib; {
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config.environment.systemPackages = with pkgs; [rage];
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config.age = {
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secrets = let
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rekeyedSecrets = lazyDerivation {
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derivation = pkgs.stdenv.mkDerivation rec {
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pname = "host-secrets";
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version = "1.0.0";
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description = "Rekeyed secrets for this host.";
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# TODO add /run to sandbox only for THIS derivation
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# TODO interactiveness how
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# TODO yubikeySupport=true convenience option
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# TODO rekeyed secrets should only strip store path, not do basename
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allSecrets = mapAttrsToList (_: value: value.file) config.rekey.secrets;
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hostPubkeyStr =
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if isPath config.rekey.hostPubkey
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then readFile config.rekey.hostPubkey
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else config.rekey.hostPubkey;
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config = let
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rekeyedSecrets = pkgs.stdenv.mkDerivation rec {
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pname = "host-secrets";
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version = "1.0.0";
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description = "Rekeyed secrets for this host.";
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dontMakeSourcesWritable = true;
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dontUnpack = true;
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dontConfigure = true;
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dontBuild = true;
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allSecrets = mapAttrsToList (_: value: value.file) config.rekey.secrets;
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hostPubkeyStr =
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if isPath config.rekey.hostPubkey
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then readFile config.rekey.hostPubkey
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else config.rekey.hostPubkey;
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installPhase = let
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masterIdentityArgs = concatMapStrings (x: ''-i "${x}" '') config.rekey.masterIdentityPaths;
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rekeyCommand = secret: ''
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echo "Rekeying ${secret}" >&2
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${pkgs.rage}/bin/rage ${masterIdentityArgs} -d ${secret}
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| ${pkgs.rage}/bin/rage -r "${hostPubkeyStr}" -o "$out/${baseNameOf secret}" -e
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'';
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in ''
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set -euo pipefail
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mkdir "$out"
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dontMakeSourcesWritable = true;
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dontUnpack = true;
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dontConfigure = true;
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dontBuild = true;
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# Enable selected age plugins
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export PATH="$PATH${concatMapStrings (x: ":${x}/bin") config.rekey.agePlugins}"
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installPhase = let
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masterIdentityArgs = concatMapStrings (x: ''-i "${x}" '') config.rekey.masterIdentityPaths;
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rekeyCommand = secret: ''
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echo "Rekeying ${secret}" >&2
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${pkgs.rage}/bin/rage ${masterIdentityArgs} -d ${secret} \
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| ${pkgs.rage}/bin/rage -r "${hostPubkeyStr}" -o "$out/${baseNameOf secret}" -e \
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|| { echo 1 > $out/status ; echo "error while rekeying secret!" | ${pkgs.rage}/bin/rage -r "${hostPubkeyStr}" -o "$out/${baseNameOf secret}" -e ; }
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'';
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in ''
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set -euo pipefail
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mkdir "$out"
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echo 0 > $out/status
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${concatStringsSep "\n" (map rekeyCommand allSecrets)}
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'';
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};
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};
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rekeyedSecretPath = secret: "${rekeyedSecrets}/${baseNameOf secret}";
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in
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# Produce a rekeyed age secret for each of the secrets defined in our secrets
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mapAttrs (_: secret:
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mapAttrs (name: value:
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if name == "file"
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then rekeyedSecretPath value
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else value)
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secret)
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config.rekey.secrets;
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# Enable selected age plugins
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export PATH="$PATH${concatMapStrings (x: ":${x}/bin") config.rekey.agePlugins}"
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identityPaths = mkForce config.rekey.agePubkey;
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};
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config.assertions = mkIf (config.rekey.secrets != {}) [
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{
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assertion = pathExists config.rekey.hostPubkey;
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message = "The public key required to rekey secrets for this host doesn't exist. If this is the first deploy, use a mock key until you know the real one.";
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}
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{
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assertion = config.rekey.masterIdentityPaths != [];
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message = "rekey.masterIdentityPaths must be set.";
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}
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];
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config.warnings = let
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hasGoodSuffix = x: strings.hasSuffix ".age" x || strings.hasSuffix ".pub" x;
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${concatStringsSep "\n" (map rekeyCommand allSecrets)}
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'';
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};
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rekeyedSecretPath = secret: "${rekeyedSecrets}/${baseNameOf secret}";
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in
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mkIf (!all hasGoodSuffix config.rekey.masterIdentityPaths) [
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''
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It seems like at least one of your rekey.masterIdentityPaths contains an
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unencrypted age identity. These files will be copied to the nix store, so
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make sure they don't contain any secret information!
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mkIf (config.rekey.secrets != {}) {
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environment.systemPackages = with pkgs; [rage];
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To silence this warning, encrypt your keys and name them *.pub or *.age.
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''
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];
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# This polkit rule allows the nixbld users to access the pcsc-lite daemon,
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# which is necessary to rekey the secrets.
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security.polkit.extraConfig = mkIf (elem pkgs.age-plugin-yubikey config.rekey.agePlugins) ''
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polkit.addRule(function(action, subject) {
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if ((action.id == "org.debian.pcsc-lite.access_pcsc" || action.id == "org.debian.pcsc-lite.access_card") &&
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subject.user.match(/^nixbld\d+$/))
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return polkit.Result.YES;
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});
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'';
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age.secrets =
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# Produce a rekeyed age secret for each of the secrets defined in our secrets
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mapAttrs (_:
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mapAttrs (name: value:
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if name == "file"
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then rekeyedSecretPath value
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else value))
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config.rekey.secrets;
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assertions = [
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{
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assertion = pathExists config.rekey.hostPubkey;
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message = ''
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The path config.rekey.hostPubkey (${toString config.rekey.hostPubkey}) doesn't exist, but is required to rekey secrets for this host.
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If this is the first deploy, use a mock key until you know the real one.
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'';
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}
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{
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assertion = config.rekey.masterIdentityPaths != [];
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message = "rekey.masterIdentityPaths must be set.";
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}
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];
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warnings = let
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hasGoodSuffix = x: strings.hasSuffix ".age" x || strings.hasSuffix ".pub" x;
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in
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optional (toInt (readFile "${rekeyedSecrets}/status") == 1) "Failed to rekey secrets! Run nix log ${rekeyedSecrets}.drv for more information."
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++ optional (!all hasGoodSuffix config.rekey.masterIdentityPaths)
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''
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It seems like at least one of your rekey.masterIdentityPaths contains an
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unencrypted age identity. These files will be copied to the nix store, so
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make sure they don't contain any secret information!
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To silence this warning, encrypt your keys and name them *.pub or *.age.
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'';
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};
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options = {
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rekey.secrets = options.age.secrets;
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@ -128,6 +147,3 @@ with lib; {
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};
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};
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}
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#rekey.secrets.my_secret.file = ./secrets/somekey.age;
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#pwdfile = rekey.secrets.mysecret.path;
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