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-rw-r--r--flakes/secrets/flake.nix60
1 files changed, 52 insertions, 8 deletions
diff --git a/flakes/secrets/flake.nix b/flakes/secrets/flake.nix
index ef74a30..7bf04a4 100644
--- a/flakes/secrets/flake.nix
+++ b/flakes/secrets/flake.nix
@@ -3,6 +3,8 @@
3 3
4 outputs = { self }: { 4 outputs = { self }: {
5 nixosModule = { config, lib, pkgs, ... }: { 5 nixosModule = { config, lib, pkgs, ... }: {
6 # Necessary for situations where flake gets included multiple times
7 key = builtins.hashString "sha256" (builtins.path { path = self.sourceInfo.outPath; name = "source"; });
6 options.secrets = with lib; { 8 options.secrets = with lib; {
7 keys = mkOption { 9 keys = mkOption {
8 type = types.attrsOf (types.submodule { 10 type = types.attrsOf (types.submodule {
@@ -36,11 +38,38 @@
36 type = types.str; 38 type = types.str;
37 description = "Content of the entry"; 39 description = "Content of the entry";
38 }; 40 };
41 keyDependencies = mkOption {
42 default = [];
43 type = types.listOf (types.either types.path types.package);
44 description = ''
45 (public) system dependencies that needs to be
46 uploaded with the key.
47
48 keyDependencies + ignoredKeyDependencies should
49 contain the exhaustive list of the text context.
50
51 A warning will be thrown if there are remaning
52 dependencies from the text.
53 '';
54 };
55 ignoredKeyDependencies = mkOption {
56 default = [];
57 type = types.listOf (types.either types.path types.package);
58 description = ''
59 dependencies that must not be sent along with the key.
60
61 keyDependencies + ignoredKeyDependencies should
62 contain the exhaustive list of the text context.
63
64 A warning will be thrown if there are remaning
65 dependencies from the text.
66 '';
67 };
39 }; 68 };
40 }); 69 });
41 default = {}; 70 default = {};
42 description = "Keys attrs to upload to the server"; 71 description = "Keys attrs to upload to the server";
43 apply = lib.mapAttrsToList (dest: v: v // { inherit dest; }); 72 apply = builtins.mapAttrs (dest: v: v // { inherit dest; });
44 }; 73 };
45 gpgKeys = mkOption { 74 gpgKeys = mkOption {
46 type = types.listOf types.path; 75 type = types.listOf types.path;
@@ -74,8 +103,8 @@
74 # Read-only variables 103 # Read-only variables
75 fullPaths = mkOption { 104 fullPaths = mkOption {
76 type = types.attrsOf types.path; 105 type = types.attrsOf types.path;
77 default = builtins.listToAttrs 106 default = builtins.mapAttrs
78 (map (v: { name = v.dest; value = "${config.secrets.location}/${v.dest}"; }) config.secrets.keys); 107 (n: v: "${config.secrets.location}/${n}") config.secrets.keys;
79 readOnly = true; 108 readOnly = true;
80 description = "set of full paths to secrets"; 109 description = "set of full paths to secrets";
81 }; 110 };
@@ -83,7 +112,7 @@
83 112
84 config = let 113 config = let
85 location = config.secrets.location; 114 location = config.secrets.location;
86 keys = config.secrets.keys; 115 keys = builtins.attrValues config.secrets.keys;
87 empty = pkgs.runCommand "empty" { preferLocalBuild = true; } "mkdir -p $out && touch $out/done"; 116 empty = pkgs.runCommand "empty" { preferLocalBuild = true; } "mkdir -p $out && touch $out/done";
88 fpath = v: "secrets/${v.dest}${lib.optionalString v.isTemplated ".gucci.tpl"}"; 117 fpath = v: "secrets/${v.dest}${lib.optionalString v.isTemplated ".gucci.tpl"}";
89 dumpKey = v: 118 dumpKey = v:
@@ -125,7 +154,24 @@
125 exclPath = builtins.concatStringsSep " -o " (map (d: " -path $TMP/${d.dest}") dirs); 154 exclPath = builtins.concatStringsSep " -o " (map (d: " -path $TMP/${d.dest}") dirs);
126 in 155 in
127 lib.optionalString (builtins.length dirs > 0) " -not \\( ${exclPath} \\) "; 156 lib.optionalString (builtins.length dirs > 0) " -not \\( ${exclPath} \\) ";
157
158 checkKeyDependencies = key:
159 let
160 allDeps = builtins.map (n: if builtins.isPath n then "${n}" else n.drvPath) (key.keyDependencies ++ key.ignoredKeyDependencies);
161 context = builtins.attrNames (builtins.getContext key.text);
162 missing = builtins.foldl' (o: n: lib.remove n o) context allDeps;
163 in
164 lib.optional (!key.isDir && builtins.length missing > 0)
165 ''
166 Key ${key.dest} has non declared dependencies in its context: ${builtins.concatStringsSep " " missing}
167 Add them to ignoredKeyDependencies to ignore
168 '';
128 in lib.mkIf (builtins.length keys > 0) { 169 in lib.mkIf (builtins.length keys > 0) {
170 warnings = lib.concatMap checkKeyDependencies keys;
171 # FIXME: Use lib.concatMap (k: k.keyDependencies) keys in latest nixpkgs
172 system.extraDependencies = lib.concatMap (k: builtins.map (dep:
173 if builtins.isPath dep then pkgs.writeText "extra-dep" "${dep}" else dep
174 ) k.keyDependencies) keys;
129 system.activationScripts.secrets = { 175 system.activationScripts.secrets = {
130 deps = [ "users" "wrappers" ]; 176 deps = [ "users" "wrappers" ];
131 text = '' 177 text = ''
@@ -133,13 +179,11 @@
133 TMP=$(${pkgs.coreutils}/bin/mktemp -d) 179 TMP=$(${pkgs.coreutils}/bin/mktemp -d)
134 TMPWORK=$(${pkgs.coreutils}/bin/mktemp -d) 180 TMPWORK=$(${pkgs.coreutils}/bin/mktemp -d)
135 chmod go-rwx $TMPWORK 181 chmod go-rwx $TMPWORK
136 if [ -n "$TMP" -a -n "$TMPWORK" ]; then 182 if [ -n "$TMP" -a -n "$TMPWORK" -a -f ${config.secrets.secretsVars} ]; then
137 install -m0750 -o root -g keys -d $TMP 183 install -m0750 -o root -g keys -d $TMP
138 ${pkgs.ssh-to-age}/bin/ssh-to-age -private-key -i ${config.secrets.decryptKey} -o $TMPWORK/keys.txt 184 ${pkgs.ssh-to-age}/bin/ssh-to-age -private-key -i ${config.secrets.decryptKey} -o $TMPWORK/keys.txt
139 SOPS_AGE_KEY_FILE=$TMPWORK/keys.txt ${pkgs.sops}/bin/sops -d ${secrets} | ${pkgs.gnutar}/bin/tar --strip-components 1 -C $TMP -x 185 SOPS_AGE_KEY_FILE=$TMPWORK/keys.txt ${pkgs.sops}/bin/sops -d ${secrets} | ${pkgs.gnutar}/bin/tar --strip-components 1 -C $TMP -x
140 if [ -f ${config.secrets.secretsVars} ]; then 186 SOPS_AGE_KEY_FILE=$TMPWORK/keys.txt ${pkgs.sops}/bin/sops -d ${config.secrets.secretsVars} > $TMPWORK/vars.yml
141 SOPS_AGE_KEY_FILE=$TMPWORK/keys.txt ${pkgs.sops}/bin/sops -d ${config.secrets.secretsVars} > $TMPWORK/vars.yml
142 fi
143 if [ -f $TMPWORK/vars.yml ]; then 187 if [ -f $TMPWORK/vars.yml ]; then
144 find $TMP -name "*.gucci.tpl" -exec \ 188 find $TMP -name "*.gucci.tpl" -exec \
145 /bin/sh -c 'f="{}"; ${pkgs.gucci}/bin/gucci -f '$TMPWORK'/vars.yml "$f" > "''${f%.gucci.tpl}"; touch --reference "$f" ''${f%.gucci.tpl} ; chmod --reference="$f" ''${f%.gucci.tpl} ; chown --reference="$f" ''${f%.gucci.tpl}' \; 189 /bin/sh -c 'f="{}"; ${pkgs.gucci}/bin/gucci -f '$TMPWORK'/vars.yml "$f" > "''${f%.gucci.tpl}"; touch --reference "$f" ''${f%.gucci.tpl} ; chmod --reference="$f" ''${f%.gucci.tpl} ; chown --reference="$f" ''${f%.gucci.tpl}' \;