in reply to Re: Filehandle with DKIM::Verifier
in thread Filehandle with DKIM::Verifier

Hello everyone and thanks for the answers.

This is the code form my small test script: 

#! /usr/bin/perl

use strict;
use warnings;
use Mail::DKIM::Verifier;

my $raw_email;
my $dkim = Mail::DKIM::Verifier->new();

open (MESSAGE, "< $ARGV[0]") || die "Couldn't open email $ARGV[0]\n";
       undef $/;
$raw_email = <>;
close MESSAGE;

print "$ARGV";

open(my $fh, "<", "$ARGV") or die "Can't open < $ARGV: $!";
$dkim->load($fh);

my $result = $dkim->result;
print "\n$result";

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

[download]

I have tested this script with differed emails. Test files with correct, wrong and missing DKIM signature. The script returns always "none" (my $result = $dkim->result;) and $signature is an empty variable.

It seams that this script canīt find a DKIM signature in the test files.

Replies are listed 'Best First'.
Re^3: Filehandle with DKIM::Verifier
by hippo (Archbishop) on Oct 16, 2017 at 08:11 UTC 
    open (MESSAGE, "< $ARGV[0]") || die "Couldn't open email $ARGV[0]\n";
       undef $/;
$raw_email = <>;
close MESSAGE;

    [download]

    Hello, nifu. Could you please explain what this section of code is doing and why?

[reply]
[d/l]
      I use this to open the file and parse it with the module Email::Simple;.

      This is the code from my "email parse script". I need to extend this script with a DKIM check. 

      #! /usr/bin/perl

use strict;
use warnings;
use Email::Simple;
use DBI;
use File::Copy;
use Date::Parse;
use DateTime;
use Path::Tiny qw(path);

[..]

open (MESSAGE, "< $ARGV[0]") || die "Couldn't open email $ARGV[0]\n";
       undef $/;
$raw_email = <>;
close MESSAGE;

my $mail            = Email::Simple->new($raw_email);
my $from_header     = $mail->header("From");
my $to_header       = $mail->header("To");
my $date_header     = $mail->header("Date");
my $aol_header      = $mail->header("Authentication-Results");

[...]

      [download]
      $ARGV is the filename form perl script.pl filename and $raw_email contains the text file.
[reply]
[d/l]
        This is the code from my "email parse script"

        So that section is not relevant to your test script. If we omit it we can end up with a working version such as:

        use strict;
use warnings;
use Test::More;
use Mail::DKIM::Verifier;

my @good = qw/good1.txt good2.txt/;
my @bad  = qw/bad1.txt bad2.txt/;
plan tests => @good + @bad;

for my $goodfile (@good) {
    my $dkim = Mail::DKIM::Verifier->new();
    open (my $gfh, '<', $goodfile) or die "Error opening $goodfile: $!
+";
    $dkim->load ($gfh);
    is ($dkim->result_detail, 'pass', $goodfile);
    close $gfh;
}
for my $badfile (@bad) {
    my $dkim = Mail::DKIM::Verifier->new();
    open (my $bfh, '<', $badfile) or die "Error opening $badfile: $!";
    $dkim->load ($bfh);
    isnt ($dkim->result, 'pass', $badfile);
    close $bfh;
}

        [download]

        Obviously you can change the filenames in the @good and @bad arrays until you have what you want. This script works fine for me testing on good and bad data.

[reply]
[d/l]

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