mirror of
https://github.com/ryantm/agenix.git
synced 2024-11-21 17:20:47 +03:00
feature: combine root and nonroot secret install; delay chowning
This commit is contained in:
Ryan Mulligan
parent
fe206b4306
commit
f86b56229b
2 changed files with 65 additions and 54 deletions
117
modules/age.nix
117
modules/age.nix
|
|
@ -14,13 +14,29 @@ let
|
|||
|
||||
users = config.users.users;
|
||||
|
||||
newGeneration = ''
|
||||
_agenix_generation="$(basename "$(readlink ${cfg.secretsDir})" || echo 0)"
|
||||
(( ++_agenix_generation ))
|
||||
echo "[agenix] creating new generation in ${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
mkdir -p "${cfg.secretsMountPoint}"
|
||||
chmod 0751 "${cfg.secretsMountPoint}"
|
||||
grep -q "${cfg.secretsMountPoint} ramfs" /proc/mounts || mount -t ramfs none "${cfg.secretsMountPoint}" -o nodev,nosuid,mode=0751
|
||||
mkdir -p "${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
chmod 0751 "${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
'';
|
||||
|
||||
identities = builtins.concatStringsSep " " (map (path: "-i ${path}") cfg.identityPaths);
|
||||
installSecret = secretType: ''
|
||||
|
||||
setTruePath = secretType: ''
|
||||
${if secretType.symlink then ''
|
||||
_truePath="${cfg.secretsMountPoint}/$_agenix_generation/${secretType.name}"
|
||||
'' else ''
|
||||
_truePath="${secretType.path}"
|
||||
''}
|
||||
'';
|
||||
|
||||
installSecret = secretType: ''
|
||||
${setTruePath secretType}
|
||||
echo "decrypting '${secretType.file}' to '$_truePath'..."
|
||||
TMP_FILE="$_truePath.tmp"
|
||||
mkdir -p "$(dirname "$_truePath")"
|
||||
|
|
@ -32,7 +48,6 @@ let
|
|||
LANG=${config.i18n.defaultLocale} ${ageBin} --decrypt ${identities} -o "$TMP_FILE" "${secretType.file}"
|
||||
)
|
||||
chmod ${secretType.mode} "$TMP_FILE"
|
||||
chown ${secretType.owner}:${secretType.group} "$TMP_FILE"
|
||||
mv -f "$TMP_FILE" "$_truePath"
|
||||
|
||||
${optionalString secretType.symlink ''
|
||||
|
|
@ -42,16 +57,42 @@ let
|
|||
|
||||
testIdentities = map (path: ''
|
||||
test -f ${path} || echo '[agenix] WARNING: config.age.identityPaths entry ${path} not present!'
|
||||
'') cfg.identityPaths;
|
||||
'') cfg.identityPaths;
|
||||
|
||||
isRootSecret = st: (st.owner == "root" || st.owner == "0") && (st.group == "root" || st.group == "0");
|
||||
isNotRootSecret = st: !(isRootSecret st);
|
||||
cleanupAndLink = ''
|
||||
_agenix_generation="$(basename "$(readlink ${cfg.secretsDir})" || echo 0)"
|
||||
(( ++_agenix_generation ))
|
||||
echo "[agenix] symlinking new secrets to ${cfg.secretsDir} (generation $_agenix_generation)..."
|
||||
ln -sfn "${cfg.secretsMountPoint}/$_agenix_generation" ${cfg.secretsDir}
|
||||
|
||||
rootOwnedSecrets = builtins.filter isRootSecret (builtins.attrValues cfg.secrets);
|
||||
installRootOwnedSecrets = builtins.concatStringsSep "\n" ([ "echo '[agenix] decrypting root secrets...'" ] ++ testIdentities ++ (map installSecret rootOwnedSecrets));
|
||||
(( _agenix_generation > 1 )) && {
|
||||
echo "[agenix] removing old secrets (generation $(( _agenix_generation - 1 )))..."
|
||||
rm -rf "${cfg.secretsMountPoint}/$(( _agenix_generation - 1 ))"
|
||||
}
|
||||
'';
|
||||
|
||||
nonRootSecrets = builtins.filter isNotRootSecret (builtins.attrValues cfg.secrets);
|
||||
installNonRootSecrets = builtins.concatStringsSep "\n" ([ "echo '[agenix] decrypting non-root secrets...'" ] ++ (map installSecret nonRootSecrets));
|
||||
installSecrets = builtins.concatStringsSep "\n" (
|
||||
[ "echo '[agenix] decrypting secrets...'" ]
|
||||
++ testIdentities
|
||||
++ (map installSecret (builtins.attrValues cfg.secrets))
|
||||
++ [ cleanupAndLink ]
|
||||
);
|
||||
|
||||
chownSecret = secretType: ''
|
||||
${setTruePath secretType}
|
||||
chown ${secretType.owner}:${secretType.group} "$_truePath"
|
||||
'';
|
||||
|
||||
# chown the secrets mountpoint and the current generation to the keys group
|
||||
# instead of leaving it root:root.
|
||||
chownMountPoint = ''
|
||||
chown :keys "${cfg.secretsMountPoint}" "${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
'';
|
||||
|
||||
chownSecrets = builtins.concatStringsSep "\n" (
|
||||
[ "echo '[agenix] chowning...'" ]
|
||||
++ [ chownMountPoint ]
|
||||
++ (map chownSecret (builtins.attrValues cfg.secrets)));
|
||||
|
||||
secretType = types.submodule ({ config, ... }: {
|
||||
options = {
|
||||
|
|
@ -162,66 +203,36 @@ in
|
|||
# ensure removed secrets are actually removed, or at least become
|
||||
# invalid symlinks).
|
||||
system.activationScripts.agenixNewGeneration = {
|
||||
text = ''
|
||||
_agenix_generation="$(basename "$(readlink ${cfg.secretsDir})" || echo 0)"
|
||||
(( ++_agenix_generation ))
|
||||
echo "[agenix] creating new generation in ${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
mkdir -p "${cfg.secretsMountPoint}"
|
||||
chmod 0751 "${cfg.secretsMountPoint}"
|
||||
grep -q "${cfg.secretsMountPoint} ramfs" /proc/mounts || mount -t ramfs none "${cfg.secretsMountPoint}" -o nodev,nosuid,mode=0751
|
||||
mkdir -p "${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
chmod 0751 "${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
'';
|
||||
text = newGeneration;
|
||||
deps = [
|
||||
"specialfs"
|
||||
];
|
||||
};
|
||||
|
||||
# Symlink new generation in place and cleanup old generation
|
||||
system.activationScripts.agenixCleanupAndLink= {
|
||||
text = ''
|
||||
_agenix_generation="$(basename "$(readlink ${cfg.secretsDir})" || echo 0)"
|
||||
(( ++_agenix_generation ))
|
||||
echo "[agenix] symlinking new secrets to ${cfg.secretsDir} (generation $_agenix_generation)..."
|
||||
ln -sfn "${cfg.secretsMountPoint}/$_agenix_generation" ${cfg.secretsDir}
|
||||
|
||||
(( _agenix_generation > 1 )) && {
|
||||
echo "[agenix] removing old secrets (generation $(( _agenix_generation - 1 )))..."
|
||||
rm -rf "${cfg.secretsMountPoint}/$(( _agenix_generation - 1 ))"
|
||||
}
|
||||
'';
|
||||
system.activationScripts.agenixInstall = {
|
||||
text = installSecrets;
|
||||
deps = [
|
||||
"agenixRoot"
|
||||
"agenixNonRoot"
|
||||
"agenixNewGeneration"
|
||||
"specialfs"
|
||||
];
|
||||
};
|
||||
|
||||
# Secrets with root owner and group can be installed before users
|
||||
# exist. This allows user password files to be encrypted.
|
||||
system.activationScripts.agenixRoot = {
|
||||
text = installRootOwnedSecrets;
|
||||
deps = [ "agenixNewGeneration" "specialfs" ];
|
||||
};
|
||||
system.activationScripts.users.deps = [ "agenixRoot" ];
|
||||
# So user passwords can be encrypted.
|
||||
system.activationScripts.users.deps = [ "agenixInstall" ];
|
||||
|
||||
# chown the secrets mountpoint and the current generation to the keys group
|
||||
# instead of leaving it root:root.
|
||||
system.activationScripts.agenixChownKeys = {
|
||||
text = ''
|
||||
chown :keys "${cfg.secretsMountPoint}" "${cfg.secretsMountPoint}/$_agenix_generation"
|
||||
'';
|
||||
# Change ownership and group after users and groups are made.
|
||||
system.activationScripts.agenixChown = {
|
||||
text = chownSecrets;
|
||||
deps = [
|
||||
"users"
|
||||
"groups"
|
||||
"agenixCleanupAndLink"
|
||||
];
|
||||
};
|
||||
|
||||
|
||||
# Other secrets need to wait for users and groups to exist.
|
||||
system.activationScripts.agenixNonRoot = {
|
||||
text = installNonRootSecrets;
|
||||
deps = [ "agenixNewGeneration" "specialfs" ];
|
||||
# So other activation scripts can depend on agenix being done.
|
||||
system.activationScripts.agenix = {
|
||||
text = "";
|
||||
deps = [ "agenixChown"];
|
||||
};
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
# Do not copy this! It is insecure. This is only okay because we are testing.
|
||||
{
|
||||
system.activationScripts.agenixRoot.deps = [ "installSSHHostKeys" ];
|
||||
system.activationScripts.agenixInstall.deps = [ "installSSHHostKeys" ];
|
||||
|
||||
system.activationScripts.installSSHHostKeys.text = ''
|
||||
mkdir -p /etc/ssh
|
||||
|
|
|
|||
Loading…
Reference in a new issue