vendor/zendframework/zend-mail/src/Header/MessageId.php

   1 <?php
   2 /**
   3  * @see       https://github.com/zendframework/zend-mail for the canonical source repository
   4  * @copyright Copyright (c) 2005-2018 Zend Technologies USA Inc. (https://www.zend.com)
   5  * @license   https://github.com/zendframework/zend-mail/blob/master/LICENSE.md New BSD License
   6  */
   7
   8 namespace Zend\Mail\Header;
   9
  10 class MessageId implements HeaderInterface
  11 {
  12     /**
  13      * @var string
  14      */
  15     protected $messageId;
  16
  17     public static function fromString($headerLine)
  18     {
  19         list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
  20         $value = HeaderWrap::mimeDecodeValue($value);
  21
  22         // check to ensure proper header type for this factory
  23         if (strtolower($name) !== 'message-id') {
  24             throw new Exception\InvalidArgumentException('Invalid header line for Message-ID string');
  25         }
  26
  27         $header = new static();
  28         $header->setId($value);
  29
  30         return $header;
  31     }
  32
  33     public function getFieldName()
  34     {
  35         return 'Message-ID';
  36     }
  37
  38     public function getFieldValue($format = HeaderInterface::FORMAT_RAW)
  39     {
  40         return $this->messageId;
  41     }
  42
  43     public function setEncoding($encoding)
  44     {
  45         // This header must be always in US-ASCII
  46         return $this;
  47     }
  48
  49     public function getEncoding()
  50     {
  51         return 'ASCII';
  52     }
  53
  54     public function toString()
  55     {
  56         return 'Message-ID: ' . $this->getFieldValue();
  57     }
  58
  59     /**
  60      * Set the message id
  61      *
  62      * @param string|null $id
  63      * @return MessageId
  64      */
  65     public function setId($id = null)
  66     {
  67         if ($id === null) {
  68             $id = $this->createMessageId();
  69         } else {
  70             $id = trim($id, '<>');
  71         }
  72
  73         if (! HeaderValue::isValid($id)
  74             || preg_match("/[\r\n]/", $id)
  75         ) {
  76             throw new Exception\InvalidArgumentException('Invalid ID detected');
  77         }
  78
  79         $this->messageId = sprintf('<%s>', $id);
  80         return $this;
  81     }
  82
  83     /**
  84      * Retrieve the message id
  85      *
  86      * @return string
  87      */
  88     public function getId()
  89     {
  90         return $this->messageId;
  91     }
  92
  93     /**
  94      * Creates the Message-ID
  95      *
  96      * @return string
  97      */
  98     public function createMessageId()
  99     {
 100         $time = time();
 101
 102         if (isset($_SERVER['REMOTE_ADDR'])) {
 103             $user = $_SERVER['REMOTE_ADDR'];
 104         } else {
 105             $user = getmypid();
 106         }
 107
 108         $rand = mt_rand();
 109
 110         if (isset($_SERVER["SERVER_NAME"])) {
 111             $hostName = $_SERVER["SERVER_NAME"];
 112         } else {
 113             $hostName = php_uname('n');
 114         }
 115
 116         return sha1($time . $user . $rand) . '@' . $hostName;
 117     }
 118 }