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# Copyright © 2021-2022 Guillem Jover <guillem@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
package Dpkg::OpenPGP::Backend::SOP;
use strict;
use warnings;
our $VERSION = '0.01';
use POSIX qw(:sys_wait_h);
use Dpkg::ErrorHandling;
use Dpkg::IPC;
use Dpkg::OpenPGP::ErrorCodes;
use parent qw(Dpkg::OpenPGP::Backend);
# - Once "gosop" implements inline-verify and inline-sign, add as alternative.
# Ref: https://github.com/ProtonMail/gosop/issues/6
# - Once "hop" implements the new SOP draft, add as alternative.
# Ref: https://salsa.debian.org/clint/hopenpgp-tools/-/issues/4
# - Once the SOP MR !23 is finalized and merged, implement a way to select
# whether the SOP instance supports the expected draft.
# Ref: https://gitlab.com/dkg/openpgp-stateless-cli/-/merge_requests/23
# - Once the SOP issue #42 is resolved we can perhaps remove the alternative
# dependencies and commands to check?
# Ref: https://gitlab.com/dkg/openpgp-stateless-cli/-/issues/42
sub DEFAULT_CMD {
return [ qw(sqop pgpainless-cli) ];
}
sub _sop_exec
{
my ($self, $io, @exec) = @_;
return OPENPGP_MISSING_CMD unless $self->{cmd};
$io->{out} //= '/dev/null';
my $stderr;
spawn(exec => [ $self->{cmd}, @exec ],
wait_child => 1, nocheck => 1, timeout => 10,
from_file => $io->{in}, to_file => $io->{out},
error_to_string => \$stderr);
if (WIFEXITED($?)) {
my $status = WEXITSTATUS($?);
print { *STDERR } "$stderr" if $status;
return $status;
} else {
subprocerr("$self->{cmd} @exec");
}
}
sub armor
{
my ($self, $type, $in, $out) = @_;
# We ignore the $type, and let "sop" handle this automatically.
return $self->_sop_exec({ in => $in, out => $out }, 'armor');
}
sub dearmor
{
my ($self, $type, $in, $out) = @_;
# We ignore the $type, and let "sop" handle this automatically.
return $self->_sop_exec({ in => $in, out => $out }, 'dearmor');
}
sub inline_verify
{
my ($self, $inlinesigned, $data, @certs) = @_;
return $self->_sop_exec({ in => $inlinesigned, out => $data },
'inline-verify', @certs);
}
sub verify
{
my ($self, $data, $sig, @certs) = @_;
return $self->_sop_exec({ in => $data }, 'verify', $sig, @certs);
}
sub inline_sign
{
my ($self, $data, $inlinesigned, $key) = @_;
return OPENPGP_NEEDS_KEYSTORE if $key->needs_keystore();
return $self->_sop_exec({ in => $data, out => $inlinesigned },
qw(inline-sign --as clearsigned --), $key->handle);
}
1;
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