mirror of
https://github.com/ryantm/agenix.git
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Merge pull request #139 from ryantm/rtm-1-29-cli-test
contrib: use mkDerivation for agenix cli
This commit is contained in:
Ryan Mulligan
GitHub
commit
ea17cc71b4
2 changed files with 189 additions and 177 deletions
204
pkgs/agenix.nix
204
pkgs/agenix.nix
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@ -1,187 +1,37 @@
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{
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lib,
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writeShellScriptBin,
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runtimeShell,
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callPackage,
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stdenv,
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rage,
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gnused,
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nix,
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mktemp,
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diffutils,
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ageBin ? "${
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# we need at least rage 0.5.0 to support ssh keys
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if rage.version < "0.5.0"
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then callPackage ./rage.nix {}
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else rage
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}/bin/rage",
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}: let
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sedBin = "${gnused}/bin/sed";
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nixInstantiate = "${nix}/bin/nix-instantiate";
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mktempBin = "${mktemp}/bin/mktemp";
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diffBin = "${diffutils}/bin/diff";
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in
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lib.recursiveUpdate (writeShellScriptBin "agenix" ''
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set -Eeuo pipefail
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substituteAll,
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ageBin ? "${rage}/bin/rage",
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shellcheck,
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}:
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stdenv.mkDerivation rec {
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pname = "agenix";
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version = "0.13.0";
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src = substituteAll {
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inherit ageBin version;
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sedBin = "${gnused}/bin/sed";
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nixInstantiate = "${nix}/bin/nix-instantiate";
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mktempBin = "${mktemp}/bin/mktemp";
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diffBin = "${diffutils}/bin/diff";
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src = ./agenix.sh;
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};
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dontUnpack = true;
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PACKAGE="agenix"
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doCheck = true;
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checkInputs = [shellcheck];
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postCheck = ''
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shellcheck $src
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'';
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function show_help () {
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echo "$PACKAGE - edit and rekey age secret files"
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echo " "
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echo "$PACKAGE -e FILE [-i PRIVATE_KEY]"
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echo "$PACKAGE -r [-i PRIVATE_KEY]"
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echo ' '
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echo 'options:'
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echo '-h, --help show help'
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echo '-e, --edit FILE edits FILE using $EDITOR'
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echo '-r, --rekey re-encrypts all secrets with specified recipients'
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echo '-i, --identity identity to use when decrypting'
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echo '-v, --verbose verbose output'
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echo ' '
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echo 'FILE an age-encrypted file'
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echo ' '
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echo 'PRIVATE_KEY a path to a private SSH key used to decrypt file'
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echo ' '
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echo 'EDITOR environment variable of editor to use when editing FILE'
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echo ' '
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echo 'RULES environment variable with path to Nix file specifying recipient public keys.'
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echo "Defaults to './secrets.nix'"
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echo ' '
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echo "agenix version: 0.13.0"
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echo "age binary path: ${ageBin}"
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echo "age version: $(${ageBin} --version)"
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}
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installPhase = ''
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install -D $src ${placeholder "out"}/bin/agenix
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'';
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test $# -eq 0 && (show_help && exit 1)
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REKEY=0
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DEFAULT_DECRYPT=(--decrypt)
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while test $# -gt 0; do
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case "$1" in
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-h|--help)
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show_help
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exit 0
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;;
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-e|--edit)
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shift
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if test $# -gt 0; then
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export FILE=$1
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else
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echo "no FILE specified"
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exit 1
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fi
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shift
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;;
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-i|--identity)
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shift
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if test $# -gt 0; then
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DEFAULT_DECRYPT+=(--identity "$1")
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else
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echo "no PRIVATE_KEY specified"
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exit 1
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fi
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shift
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;;
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-r|--rekey)
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shift
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REKEY=1
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;;
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-v|--verbose)
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shift
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set -x
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;;
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*)
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show_help
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exit 1
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;;
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esac
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done
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RULES=''${RULES:-./secrets.nix}
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function cleanup {
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if [ ! -z ''${CLEARTEXT_DIR+x} ]
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then
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rm -rf "$CLEARTEXT_DIR"
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fi
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if [ ! -z ''${REENCRYPTED_DIR+x} ]
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then
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rm -rf "$REENCRYPTED_DIR"
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fi
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}
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trap "cleanup" 0 2 3 15
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function edit {
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FILE=$1
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KEYS=$((${nixInstantiate} --eval -E "(let rules = import $RULES; in builtins.concatStringsSep \"\n\" rules.\"$FILE\".publicKeys)" | ${sedBin} 's/"//g' | ${sedBin} 's/\\n/\n/g') | ${sedBin} '/^$/d' || exit 1)
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if [ -z "$KEYS" ]
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then
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>&2 echo "There is no rule for $FILE in $RULES."
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exit 1
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fi
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CLEARTEXT_DIR=$(${mktempBin} -d)
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CLEARTEXT_FILE="$CLEARTEXT_DIR/$(basename "$FILE")"
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if [ -f "$FILE" ]
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then
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DECRYPT=("''${DEFAULT_DECRYPT[@]}")
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if [ -f "$HOME/.ssh/id_rsa" ]; then
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DECRYPT+=(--identity "$HOME/.ssh/id_rsa")
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fi
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if [ -f "$HOME/.ssh/id_ed25519" ]; then
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DECRYPT+=(--identity "$HOME/.ssh/id_ed25519")
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fi
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if [[ "''${DECRYPT[*]}" != *"--identity"* ]]; then
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echo "No identity found to decrypt $FILE. Try adding an SSH key at $HOME/.ssh/id_rsa or $HOME/.ssh/id_ed25519 or using the --identity flag to specify a file."
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exit 1
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fi
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DECRYPT+=(-o "$CLEARTEXT_FILE" "$FILE")
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${ageBin} "''${DECRYPT[@]}" || exit 1
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cp "$CLEARTEXT_FILE" "$CLEARTEXT_FILE.before"
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fi
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$EDITOR "$CLEARTEXT_FILE"
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if [ ! -f "$CLEARTEXT_FILE" ]
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then
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echo "$FILE wasn't created."
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return
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fi
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[ -f "$FILE" ] && [ "$EDITOR" != ":" ] && ${diffBin} "$CLEARTEXT_FILE.before" "$CLEARTEXT_FILE" 1>/dev/null && echo "$FILE wasn't changed, skipping re-encryption." && return
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ENCRYPT=()
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while IFS= read -r key
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do
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ENCRYPT+=(--recipient "$key")
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done <<< "$KEYS"
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REENCRYPTED_DIR=$(${mktempBin} -d)
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REENCRYPTED_FILE="$REENCRYPTED_DIR/$(basename "$FILE")"
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ENCRYPT+=(-o "$REENCRYPTED_FILE")
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${ageBin} "''${ENCRYPT[@]}" <"$CLEARTEXT_FILE" || exit 1
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mv -f "$REENCRYPTED_FILE" "$1"
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}
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function rekey {
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FILES=$((${nixInstantiate} --eval -E "(let rules = import $RULES; in builtins.concatStringsSep \"\n\" (builtins.attrNames rules))" | ${sedBin} 's/"//g' | ${sedBin} 's/\\n/\n/g') || exit 1)
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for FILE in $FILES
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do
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echo "rekeying $FILE..."
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EDITOR=: edit "$FILE"
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cleanup
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done
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}
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[ $REKEY -eq 1 ] && rekey && exit 0
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edit "$FILE" && cleanup && exit 0
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'')
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{
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meta.description = "age-encrypted secrets for NixOS";
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}
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meta.description = "age-encrypted secrets for NixOS";
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}
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162
pkgs/agenix.sh
Normal file
162
pkgs/agenix.sh
Normal file
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@ -0,0 +1,162 @@
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#!/usr/bin/env bash
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set -Eeuo pipefail
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PACKAGE="agenix"
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function show_help () {
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echo "$PACKAGE - edit and rekey age secret files"
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echo " "
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echo "$PACKAGE -e FILE [-i PRIVATE_KEY]"
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echo "$PACKAGE -r [-i PRIVATE_KEY]"
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echo ' '
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echo 'options:'
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echo '-h, --help show help'
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# shellcheck disable=SC2016
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echo '-e, --edit FILE edits FILE using $EDITOR'
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echo '-r, --rekey re-encrypts all secrets with specified recipients'
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echo '-i, --identity identity to use when decrypting'
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echo '-v, --verbose verbose output'
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echo ' '
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echo 'FILE an age-encrypted file'
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echo ' '
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echo 'PRIVATE_KEY a path to a private SSH key used to decrypt file'
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echo ' '
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echo 'EDITOR environment variable of editor to use when editing FILE'
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echo ' '
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echo 'RULES environment variable with path to Nix file specifying recipient public keys.'
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echo "Defaults to './secrets.nix'"
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echo ' '
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echo "agenix version: @version@"
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echo "age binary path: @ageBin@"
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echo "age version: $(@ageBin@ --version)"
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}
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test $# -eq 0 && (show_help && exit 1)
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REKEY=0
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DEFAULT_DECRYPT=(--decrypt)
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while test $# -gt 0; do
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case "$1" in
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-h|--help)
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show_help
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exit 0
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;;
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-e|--edit)
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shift
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if test $# -gt 0; then
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export FILE=$1
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else
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echo "no FILE specified"
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exit 1
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fi
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shift
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;;
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-i|--identity)
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shift
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if test $# -gt 0; then
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DEFAULT_DECRYPT+=(--identity "$1")
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else
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echo "no PRIVATE_KEY specified"
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exit 1
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fi
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shift
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;;
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-r|--rekey)
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shift
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REKEY=1
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;;
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-v|--verbose)
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shift
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set -x
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;;
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*)
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show_help
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exit 1
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;;
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esac
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done
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RULES=${RULES:-./secrets.nix}
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function cleanup {
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if [ -n "${CLEARTEXT_DIR+x}" ]
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then
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rm -rf "$CLEARTEXT_DIR"
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fi
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if [ -n "${REENCRYPTED_DIR+x}" ]
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then
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rm -rf "$REENCRYPTED_DIR"
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fi
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}
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trap "cleanup" 0 2 3 15
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function edit {
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FILE=$1
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KEYS=$( (@nixInstantiate@ --eval -E "(let rules = import $RULES; in builtins.concatStringsSep \"\n\" rules.\"$FILE\".publicKeys)" | @sedBin@ 's/"//g' | @sedBin@ 's/\\n/\n/g') | @sedBin@ '/^$/d' || exit 1)
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if [ -z "$KEYS" ]
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then
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>&2 echo "There is no rule for $FILE in $RULES."
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exit 1
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fi
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CLEARTEXT_DIR=$(@mktempBin@ -d)
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CLEARTEXT_FILE="$CLEARTEXT_DIR/$(basename "$FILE")"
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if [ -f "$FILE" ]
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then
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DECRYPT=("${DEFAULT_DECRYPT[@]}")
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if [ -f "$HOME/.ssh/id_rsa" ]; then
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DECRYPT+=(--identity "$HOME/.ssh/id_rsa")
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fi
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if [ -f "$HOME/.ssh/id_ed25519" ]; then
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DECRYPT+=(--identity "$HOME/.ssh/id_ed25519")
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fi
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if [[ "${DECRYPT[*]}" != *"--identity"* ]]; then
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echo "No identity found to decrypt $FILE. Try adding an SSH key at $HOME/.ssh/id_rsa or $HOME/.ssh/id_ed25519 or using the --identity flag to specify a file."
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exit 1
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fi
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DECRYPT+=(-o "$CLEARTEXT_FILE" "$FILE")
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@ageBin@ "${DECRYPT[@]}" || exit 1
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cp "$CLEARTEXT_FILE" "$CLEARTEXT_FILE.before"
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fi
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$EDITOR "$CLEARTEXT_FILE"
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if [ ! -f "$CLEARTEXT_FILE" ]
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then
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echo "$FILE wasn't created."
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return
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fi
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[ -f "$FILE" ] && [ "$EDITOR" != ":" ] && @diffBin@ "$CLEARTEXT_FILE.before" "$CLEARTEXT_FILE" 1>/dev/null && echo "$FILE wasn't changed, skipping re-encryption." && return
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ENCRYPT=()
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while IFS= read -r key
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do
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ENCRYPT+=(--recipient "$key")
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done <<< "$KEYS"
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REENCRYPTED_DIR=$(@mktempBin@ -d)
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REENCRYPTED_FILE="$REENCRYPTED_DIR/$(basename "$FILE")"
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ENCRYPT+=(-o "$REENCRYPTED_FILE")
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@ageBin@ "${ENCRYPT[@]}" <"$CLEARTEXT_FILE" || exit 1
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mv -f "$REENCRYPTED_FILE" "$1"
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}
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function rekey {
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FILES=$( (@nixInstantiate@ --eval -E "(let rules = import $RULES; in builtins.concatStringsSep \"\n\" (builtins.attrNames rules))" | @sedBin@ 's/"//g' | @sedBin@ 's/\\n/\n/g') || exit 1)
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for FILE in $FILES
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do
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echo "rekeying $FILE..."
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EDITOR=: edit "$FILE"
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cleanup
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done
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}
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[ $REKEY -eq 1 ] && rekey && exit 0
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edit "$FILE" && cleanup && exit 0
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