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|
#!@perl@/bin/perl
use v5.30;
use strict;
use warnings;
use feature 'signatures';
no warnings 'experimental::signatures';
use JSON;
use File::Basename;
use File::Temp;
use File::Path qw( make_path );
# we deliberately don't attempt to keep decrypted secrets in mlock/dont-dump
# memory because age doesn't either (yet).
my $identity;
$identity = "$ENV{HOME}/.seacrit/id" if defined $ENV{HOME};
sub encryptTo($ipath, $keys, $opath) {
system("age", "-e", (map { ("-r", $_) } @$keys), "-o", $opath, $ipath) == 0
or die "age encryption failed";
}
sub decrypt($ipath) {
open(my $decfh, "-|", "age", "-d", "-i", $identity, $ipath) or die "decryption failed";
my $result = do { local $/; <$decfh>; };
close($decfh) or die "age decryption failed";
$result;
}
sub parseSecrets() {
my $script = q{
{ secrets, lib }:
builtins.toJSON (lib.mapAttrs (_: a: a ++ secrets.default or []) secrets.secrets)
} =~ s/'/'\\''/gr;
my $result = qx{
nix-instantiate --eval --json --expr '$script' \\
--arg secrets 'import ./secrets.nix' \\
--arg lib '(import <nixpkgs> {}).lib'
};
die "failed to evaluate secrets.nix" if $?;
decode_json(decode_json($result));
}
sub cmdEdit($config, $name, $editor = undef) {
my $recipients = $config->{$name};
die "no such secret" unless defined $recipients;
my $path = "store/$name";
$editor = $ENV{EDITOR} unless defined $editor;
die 'no $EDITOR' unless defined $editor;
-d dirname($path) || make_path(dirname($path)) or die "failed to create store dir";
my $tmp = File::Temp->new;
print $tmp decrypt($path) if -e $path;
system($editor, $tmp) == 0 or die "editing secret failed";
encryptTo($tmp, $recipients, $path);
}
sub cmdRekey($config) {
for my $name (keys %$config) {
cmdEdit($config, $name, "true") if -e "store/$name";
}
}
sub cmdGenkey($path) {
umask 0077;
-d dirname($path) || mkdir(dirname($path)) or die "could not create key dir";
system("age-keygen", "-o", $path) == 0 or die "key generation failed";
system("age-keygen", "-y", "-o", "$path.pub", $path) == 0 or die "key generation failed";
}
sub usage() {
print <<~EOT;
usage:
seacrit [ -i FILE ] edit <secret-name>
seacrit [ -i FILE ] rekey
seacrit [ -i FILE ] genkey <key-path>
General options:
-h, --help print help
-i, --identity FILE identity to use for decryption
edit and rekey must be run in the directory of secrets.nix, genkey can be run anywhere.
EOT
}
sub flop($msg) {
say "error: ", $msg;
say "";
usage;
exit 1;
}
while (my $arg = shift @ARGV) {
if ($arg =~ /^-h|--help$/) {
usage;
exit 0;
} elsif ($arg =~ /^-i|--identity$/) {
$identity = shift @ARGV or flop "-i needs an argument";
} elsif ($arg eq "edit") {
flop "edit needs exactly one argument" unless $#ARGV == 0;
cmdEdit(parseSecrets, $ARGV[0]);
exit 0;
} elsif ($arg eq "rekey") {
flop "too many arguments" unless $#ARGV < 0;
cmdRekey(parseSecrets);
exit 0;
} elsif ($arg eq "genkey") {
flop "too many arguments" unless $#ARGV <= 0;
cmdGenkey($ARGV[0] or $identity);
exit 0;
} else {
flop "unknown argument $arg";
}
}
flop "need a command";
|
