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# ex:ts=8 sw=4:
# $OpenBSD: x509.pm,v 1.3 2009/11/11 11:13:16 espie Exp $
#
# Copyright (c) 2003-2007 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package OpenBSD::x509;
use OpenBSD::PackageInfo;
use OpenBSD::Paths;
use MIME::Base64;
use File::Temp qw/mkstemp/;
sub compute_signature
{
my ($plist, $cert, $key) = @_;
open my $fh, ">", $plist->infodir.CONTENTS;
$plist->write_no_sig($fh);
close $fh;
open(my $sighandle, "-|", OpenBSD::Paths->openssl, "smime", "-sign",
"-binary", "-signer", $cert ,"-in", $plist->infodir.CONTENTS,
"-inkey", $key, "-outform", "DEM") or die;
my $sig;
sysread($sighandle, $sig, 16384);
close($sighandle) or die "problem generating signature $!";
return encode_base64($sig, '');
}
sub dump_certificate_info
{
my $fname2 = shift;
open my $fh, "-|", OpenBSD::Paths->openssl, "asn1parse",
"-inform", "DEM", "-in", $fname2;
my %want = map {($_, 1)}
qw(countryName localityName organizationName
organizationalUnitName commonName emailAddress);
while (<$fh>) {
if (m/\sprim\:\s+OBJECT\s*\:(.*)\s*$/) {
my $objectname = $1;
$_ = <$fh>;
if (m/\sprim\:\s+[A-Z0-9]+\s*\:(.*)\s*$/) {
if ($want{$objectname}) {
print "$objectname=$1\n";
}
}
}
}
close($fh);
}
sub print_certificate_info
{
my $plist = shift;
my ($fh, $fname) = mkstemp("/tmp/pkgsig.XXXXXXXXX");
print $fh decode_base64($plist->{'digital-signature'}->{b64sig});
close $fh;
dump_certificate_info($fname);
unlink $fname;
}
sub system_quiet
{
my $r = fork;
if (!defined $r) {
return 1;
} elsif ($r == 0) {
open STDERR, ">/dev/null";
exec {$_[0]} @_ or return 1;
} else {
waitpid($r, 0);
return $?;
}
}
sub check_signature
{
my ($plist, $state) = @_;
my $sig = $plist->get('digital-signature');
if ($sig->{key} ne 'x509') {
$state->log->warn("Error: unknown signature style");
return 0;
}
my ($fh, $fname) = mkstemp("/tmp/pkgcontent.XXXXXXXXX");
my ($fh2, $fname2) = mkstemp("/tmp/pkgsig.XXXXXXXXX");
$plist->write_no_sig($fh);
print $fh2 decode_base64($sig->{b64sig});
close $fh;
close $fh2;
if (system_quiet (OpenBSD::Paths->openssl, "smime", "-verify",
"-binary", "-inform", "DEM", "-in", $fname2, "-content", $fname,
"-CAfile", OpenBSD::Paths->pkgca, "-out", "/dev/null") != 0) {
$state->log->warn("Bad signature");
return 0;
}
if ($state->{verbose}) {
dump_certificate_info($fname2);
}
unlink $fname;
unlink $fname2;
return 1;
}
1;
|
