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Dir : ~/usr/share/doc/perl-Mail-DKIM-0.39/scripts/

View File Name : dkimverify.pl

#!/usr/bin/perl -I../lib
#
# Copyright (c) 2005-2007 Messiah College. This program is free software.
# You can redistribute it and/or modify it under the terms of the
# GNU Public License as found at http://www.fsf.org/copyleft/gpl.html.
#
# Written by Jason Long, jlong@messiah.edu.

use strict;
use warnings;

use Mail::DKIM::Verifier;
use Getopt::Long;

my $debug_canonicalization;
GetOptions(
		"debug-canonicalization=s" => \$debug_canonicalization,
		)
	or die "Error: invalid argument(s)\n";

my $debugfh;
if (defined $debug_canonicalization)
{
	open $debugfh, ">", $debug_canonicalization
		or die "Error: cannot write to $debug_canonicalization: $!\n";
}
my $dkim = new Mail::DKIM::Verifier(
		Debug_Canonicalization => $debugfh,
	);
while (<STDIN>)
{
	chomp;
	s/\015$//;
	$dkim->PRINT("$_\015\012");
}
$dkim->CLOSE;

if ($debugfh)
{
	close $debugfh;
	print STDERR "wrong canonicalized message to $debug_canonicalization\n";
}

print "originator address: " . $dkim->message_originator->address . "\n";
foreach my $signature ($dkim->signatures)
{
	print "signature identity: " . $signature->identity . "\n";
	print "verify result: " . $signature->result_detail . "\n";
}

foreach my $policy ($dkim->policies)
{
	my $policy_name = $policy->name;
	print "$policy_name policy result: ";

	my $policy_result = $policy->apply($dkim);
	print "$policy_result\n";
}

__END__

=head1 NAME

dkimverify.pl - verifies DKIM signatures on an email message

=head1 SYNOPSIS

  dkimverify.pl [options] < signed_email.txt
    options:
      --debug-canonicalization=FILE

  dkimverify.pl --help
    to see a full description of the various options

=head1 OPTIONS

=over

=item B<--debug-canonicalization>

Outputs the canonicalized message to the specified file, in addition
to computing the DKIM signature. This is helpful for debugging
canonicalization methods.

=back

=head1 AUTHOR

Jason Long, E<lt>jlong@messiah.eduE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2006-2007 by Messiah College

This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.6 or,
at your option, any later version of Perl 5 you may have available.

=cut