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Revision: 54365
at December 21, 2011 14:04 by davo
Initial Code 
<html><body>
<form action="<?php echo($_SERVER[REQUEST_URI]);?>" method="post" enctype="multipart/form-data">
<textarea name="message" cols="30" rows="6"><?php echo($_POST[message]);?></textarea>
<br />
<label for='email_file'>Select A File To Email:</label>
<input type="file" name="email_file">
<br />
<input type="submit" value="Encrypt and send your message">
<hr>
<?php
if(!empty($_POST[message])) {
  $message = $_POST[message];

  //Settings
  $mailto = "[email protected]";
  $max_allowed_file_size = 5120; // size in KB default 5meg 5120
  $allowed_extensions = array("zip", "doc", "pdf", "png", "jpg", "jpeg", "gif", "bmp");
  $gpglocation = '/usr/bin/gpg';
  $gnupgp = '/home/user/.gnupg';
  $keyid = 'XXXXXXXXXXXXXXXXXXX'; // see: http://business-php.com/opensource/gpg_encrypt/


  /** ----------- End of config --------------- **/

  // pgp_encrypt.php see: http://business-php.com/opensource/gpg_encrypt/
  require_once('gpg_encrypt.php');

  //Get the email file information
  $name_of_email_file = basename($_FILES['email_file']['name']);
  //get the file extension of the file
  $type_of_email_file = substr($name_of_email_file, strrpos($name_of_email_file, '.') + 1);
  $size_of_email_file = $_FILES["email_file"]["size"]/1024;//size in KBs
  //Validations
  if($size_of_email_file > $max_allowed_file_size )
  {
    $errors .= "\n Size of file should be less than $max_allowed_file_size";
  }
  //------ Validate the file extension -----
  $allowed_ext = false;
  for($i=0; $i<sizeof($allowed_extensions); $i++)
  {
    if(strcasecmp($allowed_extensions[$i],$type_of_email_file) == 0)
    {
      $allowed_ext = true;
    }
  }
  if(!$allowed_ext)
  {
    $errors .= "\n The email file is not supported file type. ".
    " Only the following file types are supported: ".implode(',',$allowed_extensions);
  }

  // Obtain file upload vars
  $tmp_name = $_FILES['email_file']['tmp_name'];
  if (is_uploaded_file($tmp_name)) {
     $file = fopen($tmp_name,'rb');
     $data = fread($file,filesize($tmp_name));
     fclose($file);

     // Generate a boundary string
     $semi_rand = md5(time());
     $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
     // Add the headers for a file attachment
     $headers .= "MIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";
     // Add a multipart boundary above the plain message
     $message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";
     // Base64 encode the file data
     $data = chunk_split(base64_encode($data));

     // Add file attachment to the message
     $message .= "--{$mime_boundary}\n" . "Content-Type: {$type_of_email_file};\n" . " name=\"{$name_of_email_file}\"\n" . "Content-Disposition: attachment;\n" . " filename=\"{$name_of_email_file}\"\n" . "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n" . "--{$mime_boundary}--\n";
  }

  $gpg = gpg_encrypt("${message}", $gpglocation , $gnupgp, $keyid);

  if("$gpg[2]" == '0') {
     mail($mailto, 'encrypted message of type '.$type_of_email_file, "$gpg[0]", $headers);
     echo('Your message was encrypted and sent');
  } else {
     echo("<pre>\n$gpg[1]</pre><br /><div>$errors</div>");
  }
}
?>
</body>
</html>
Initial URL 









Initial Description





Simple script utilising the `gpg_encrypt.php` code (`http://business-php.com/opensource/gpg_encrypt/`) that will encrypt both the body and attachment of an email on upload.









Initial Title





gpg encrypt message and file on upload, then email









Initial Tags





email, php









Initial Language





PHP