public function PHPMailer::DKIM_Add in SMTP Authentication Support 7.2

Same name and namespace in other branches

1. 7 smtp.phpmailer.inc \PHPMailer::DKIM_Add()

Create the DKIM header, body, as new header

@access public

Parameters

string $headers_line Header lines:

string $subject Subject:

string $body Body:

1 call to PHPMailer::DKIM_Add()

PHPMailer::Send in ./smtp.phpmailer.inc

Creates message and assigns Mailer. If the message is not sent successfully then it returns FALSE. Use the ErrorInfo variable to view description of the error.

File

./smtp.phpmailer.inc, line 2270

The mail handler class in smtp module, based on code of the phpmailer library, customized and relicensed to GPLv2.

Class

PHPMailer

PHPMailer - PHP email transport class NOTE: Requires PHP version 5 or later @package PHPMailer @author Andy Prevost @author Marcus Bointon @copyright 2004 - 2009 Andy Prevost

Code

public function DKIM_Add($headers_line, $subject, $body) {
  $DKIMsignatureType = 'rsa-sha1';

  // Signature & hash algorithms
  $DKIMcanonicalization = 'relaxed/simple';

  // Canonicalization of header/body
  $DKIMquery = 'dns/txt';

  // Query method
  $DKIMtime = REQUEST_TIME;

  // Signature Timestamp = seconds since 00:00:00 - Jan 1, 1970 (UTC time zone)
  $subject_header = "Subject: {$subject}";
  $headers = explode("\r\n", $headers_line);
  foreach ($headers as $header) {
    if (strpos($header, 'From:') === 0) {
      $from_header = $header;
    }
    elseif (strpos($header, 'To:') === 0) {
      $to_header = $header;
    }
  }
  $from = str_replace('|', '=7C', $this
    ->DKIM_QP($from_header));
  $to = str_replace('|', '=7C', $this
    ->DKIM_QP($to_header));
  $subject = str_replace('|', '=7C', $this
    ->DKIM_QP($subject_header));

  // Copied header fields (dkim-quoted-printable
  $body = $this
    ->DKIM_BodyC($body);
  $DKIMlen = strlen($body);

  // Length of body
  $DKIMb64 = base64_encode(pack("H*", sha1($body)));

  // Base64 of packed binary SHA-1 hash of body
  $ident = $this->DKIM_identity == '' ? '' : " i=" . $this->DKIM_identity . ";";
  $dkimhdrs = "DKIM-Signature: v=1; a=" . $DKIMsignatureType . "; q=" . $DKIMquery . "; l=" . $DKIMlen . "; s=" . $this->DKIM_selector . ";\r\n" . "\tt=" . $DKIMtime . "; c=" . $DKIMcanonicalization . ";\r\n" . "\th=From:To:Subject;\r\n" . "\td=" . $this->DKIM_domain . ";" . $ident . "\r\n" . "\tz={$from}\r\n" . "\t|{$to}\r\n" . "\t|{$subject};\r\n" . "\tbh=" . $DKIMb64 . ";\r\n" . "\tb=";
  $toSign = $this
    ->DKIM_HeaderC($from_header . "\r\n" . $to_header . "\r\n" . $subject_header . "\r\n" . $dkimhdrs);
  $signed = $this
    ->DKIM_Sign($toSign);
  return "X-PHPMAILER-DKIM: phpmailer.worxware.com\r\n" . $dkimhdrs . $signed . "\r\n";
}