forked from bcit-ci/CodeIgniter
/
Email.php
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Email.php
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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
* Licensed under the Open Software License version 3.0
*
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
* http://opensource.org/licenses/OSL-3.0
* If you did not receive a copy of the license and are unable to obtain it
* through the world wide web, please send an email to
* licensing@ellislab.com so we can send you a copy immediately.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
/**
* CodeIgniter Email Class
*
* Permits email to be sent using Mail, Sendmail, or SMTP.
*
* @package CodeIgniter
* @subpackage Libraries
* @category Libraries
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/libraries/email.html
*/
class CI_Email {
public $useragent = 'CodeIgniter';
public $mailpath = '/usr/sbin/sendmail'; // Sendmail path
public $protocol = 'mail'; // mail/sendmail/smtp
public $smtp_host = ''; // SMTP Server. Example: mail.earthlink.net
public $smtp_user = ''; // SMTP Username
public $smtp_pass = ''; // SMTP Password
public $smtp_port = 25; // SMTP Port
public $smtp_timeout = 5; // SMTP Timeout in seconds
public $smtp_crypto = ''; // SMTP Encryption. Can be null, tls or ssl.
public $wordwrap = TRUE; // TRUE/FALSE Turns word-wrap on/off
public $wrapchars = 76; // Number of characters to wrap at.
public $mailtype = 'text'; // text/html Defines email formatting
public $charset = 'utf-8'; // Default char set: iso-8859-1 or us-ascii
public $multipart = 'mixed'; // "mixed" (in the body) or "related" (separate)
public $alt_message = ''; // Alternative message for HTML emails
public $validate = FALSE; // TRUE/FALSE. Enables email validation
public $priority = 3; // Default priority (1 - 5)
public $newline = "\n"; // Default newline. "\r\n" or "\n" (Use "\r\n" to comply with RFC 822)
public $crlf = "\n"; // The RFC 2045 compliant CRLF for quoted-printable is "\r\n". Apparently some servers,
// even on the receiving end think they need to muck with CRLFs, so using "\n", while
// distasteful, is the only thing that seems to work for all environments.
public $dsn = FALSE; // Delivery Status Notification
public $send_multipart = TRUE; // TRUE/FALSE - Yahoo does not like multipart alternative, so this is an override. Set to FALSE for Yahoo.
public $bcc_batch_mode = FALSE; // TRUE/FALSE - Turns on/off Bcc batch feature
public $bcc_batch_size = 200; // If bcc_batch_mode = TRUE, sets max number of Bccs in each batch
protected $_safe_mode = FALSE;
protected $_subject = '';
protected $_body = '';
protected $_finalbody = '';
protected $_alt_boundary = '';
protected $_atc_boundary = '';
protected $_header_str = '';
protected $_smtp_connect = '';
protected $_encoding = '8bit';
protected $_IP = FALSE;
protected $_smtp_auth = FALSE;
protected $_replyto_flag = FALSE;
protected $_debug_msg = array();
protected $_recipients = array();
protected $_cc_array = array();
protected $_bcc_array = array();
protected $_headers = array();
protected $_attach_name = array();
protected $_attach_type = array();
protected $_attach_disp = array();
protected $_protocols = array('mail', 'sendmail', 'smtp');
protected $_base_charsets = array('us-ascii', 'iso-2022-'); // 7-bit charsets (excluding language suffix)
protected $_bit_depths = array('7bit', '8bit');
protected $_priorities = array('1 (Highest)', '2 (High)', '3 (Normal)', '4 (Low)', '5 (Lowest)');
/**
* Constructor - Sets Email Preferences
*
* The constructor can be passed an array of config values
*
* @return void
*/
public function __construct($config = array())
{
if (count($config) > 0)
{
$this->initialize($config);
}
else
{
$this->_smtp_auth = ! ($this->smtp_user === '' && $this->smtp_pass === '');
$this->_safe_mode = (bool) @ini_get('safe_mode');
}
log_message('debug', 'Email Class Initialized');
}
// --------------------------------------------------------------------
/**
* Initialize preferences
*
* @param array
* @return void
*/
public function initialize($config = array())
{
foreach ($config as $key => $val)
{
if (isset($this->$key))
{
$method = 'set_'.$key;
if (method_exists($this, $method))
{
$this->$method($val);
}
else
{
$this->$key = $val;
}
}
}
$this->clear();
$this->_smtp_auth = ! ($this->smtp_user === '' && $this->smtp_pass === '');
$this->_safe_mode = (bool) @ini_get('safe_mode');
return $this;
}
// --------------------------------------------------------------------
/**
* Initialize the Email Data
*
* @param bool
* @return object
*/
public function clear($clear_attachments = FALSE)
{
$this->_subject = '';
$this->_body = '';
$this->_finalbody = '';
$this->_header_str = '';
$this->_replyto_flag = FALSE;
$this->_recipients = array();
$this->_cc_array = array();
$this->_bcc_array = array();
$this->_headers = array();
$this->_debug_msg = array();
$this->set_header('User-Agent', $this->useragent);
$this->set_header('Date', $this->_set_date());
if ($clear_attachments !== FALSE)
{
$this->_attach_name = array();
$this->_attach_type = array();
$this->_attach_disp = array();
}
return $this;
}
// --------------------------------------------------------------------
/**
* Set FROM
*
* @param string
* @param string
* @return object
*/
public function from($from, $name = '', $return_path = '')
{
if (preg_match('/\<(.*)\>/', $from, $match))
{
$from = $match[1];
}
if ($this->validate)
{
$this->validate_email($this->_str_to_array($from));
if ($return_path)
{
$this->validate_email($this->_str_to_array($return_path));
}
}
// prepare the display name
if ($name !== '')
{
// only use Q encoding if there are characters that would require it
if ( ! preg_match('/[\200-\377]/', $name))
{
// add slashes for non-printing characters, slashes, and double quotes, and surround it in double quotes
$name = '"'.addcslashes($name, "\0..\37\177'\"\\").'"';
}
else
{
$name = $this->_prep_q_encoding($name, TRUE);
}
}
$this->set_header('From', $name.' <'.$from.'>');
if( ! $return_path)
{
$return_path = $from;
}
$this->set_header('Return-Path', '<'.$return_path.'>');
return $this;
}
// --------------------------------------------------------------------
/**
* Set Reply-to
*
* @param string
* @param string
* @return object
*/
public function reply_to($replyto, $name = '')
{
if (preg_match('/\<(.*)\>/', $replyto, $match))
{
$replyto = $match[1];
}
if ($this->validate)
{
$this->validate_email($this->_str_to_array($replyto));
}
if ($name === '')
{
$name = $replyto;
}
if (strpos($name, '"') !== 0)
{
$name = '"'.$name.'"';
}
$this->set_header('Reply-To', $name.' <'.$replyto.'>');
$this->_replyto_flag = TRUE;
return $this;
}
// --------------------------------------------------------------------
/**
* Set Recipients
*
* @param string
* @return object
*/
public function to($to)
{
$to = $this->_str_to_array($to);
$to = $this->clean_email($to);
if ($this->validate)
{
$this->validate_email($to);
}
if ($this->_get_protocol() !== 'mail')
{
$this->set_header('To', implode(', ', $to));
}
switch ($this->_get_protocol())
{
case 'smtp':
$this->_recipients = $to;
break;
case 'sendmail':
case 'mail':
$this->_recipients = implode(', ', $to);
break;
}
return $this;
}
// --------------------------------------------------------------------
/**
* Set CC
*
* @param string
* @return object
*/
public function cc($cc)
{
$cc = $this->clean_email($this->_str_to_array($cc));
if ($this->validate)
{
$this->validate_email($cc);
}
$this->set_header('Cc', implode(', ', $cc));
if ($this->_get_protocol() === 'smtp')
{
$this->_cc_array = $cc;
}
return $this;
}
// --------------------------------------------------------------------
/**
* Set BCC
*
* @param string
* @param string
* @return object
*/
public function bcc($bcc, $limit = '')
{
if ($limit !== '' && is_numeric($limit))
{
$this->bcc_batch_mode = TRUE;
$this->bcc_batch_size = $limit;
}
$bcc = $this->clean_email($this->_str_to_array($bcc));
if ($this->validate)
{
$this->validate_email($bcc);
}
if ($this->_get_protocol() === 'smtp' OR ($this->bcc_batch_mode && count($bcc) > $this->bcc_batch_size))
{
$this->_bcc_array = $bcc;
}
else
{
$this->set_header('Bcc', implode(', ', $bcc));
}
return $this;
}
// --------------------------------------------------------------------
/**
* Set Email Subject
*
* @param string
* @return object
*/
public function subject($subject)
{
$subject = $this->_prep_q_encoding($subject);
$this->set_header('Subject', $subject);
return $this;
}
// --------------------------------------------------------------------
/**
* Set Body
*
* @param string
* @return object
*/
public function message($body)
{
$this->_body = rtrim(str_replace("\r", '', $body));
/* strip slashes only if magic quotes is ON
if we do it with magic quotes OFF, it strips real, user-inputted chars.
NOTE: In PHP 5.4 get_magic_quotes_gpc() will always return 0 and
it will probably not exist in future versions at all.
*/
if ( ! is_php('5.4') && get_magic_quotes_gpc())
{
$this->_body = stripslashes($this->_body);
}
return $this;
}
// --------------------------------------------------------------------
/**
* Assign file attachments
*
* @param string
* @return object
*/
public function attach($filename, $disposition = '', $newname = NULL, $mime = '')
{
$this->_attach_name[] = array($filename, $newname);
$this->_attach_disp[] = empty($disposition) ? 'attachment' : $disposition; // Can also be 'inline' Not sure if it matters
$this->_attach_type[] = $mime;
return $this;
}
// --------------------------------------------------------------------
/**
* Add a Header Item
*
* @param string
* @param string
* @return void
*/
public function set_header($header, $value)
{
$this->_headers[$header] = $value;
}
// --------------------------------------------------------------------
/**
* Convert a String to an Array
*
* @param string
* @return array
*/
protected function _str_to_array($email)
{
if ( ! is_array($email))
{
return (strpos($email, ',') !== FALSE)
? preg_split('/[\s,]/', $email, -1, PREG_SPLIT_NO_EMPTY)
: (array) trim($email);
}
return $email;
}
// --------------------------------------------------------------------
/**
* Set Multipart Value
*
* @param string
* @return object
*/
public function set_alt_message($str = '')
{
$this->alt_message = (string) $str;
return $this;
}
// --------------------------------------------------------------------
/**
* Set Mailtype
*
* @param string
* @return object
*/
public function set_mailtype($type = 'text')
{
$this->mailtype = ($type === 'html') ? 'html' : 'text';
return $this;
}
// --------------------------------------------------------------------
/**
* Set Wordwrap
*
* @param bool
* @return object
*/
public function set_wordwrap($wordwrap = TRUE)
{
$this->wordwrap = (bool) $wordwrap;
return $this;
}
// --------------------------------------------------------------------
/**
* Set Protocol
*
* @param string
* @return object
*/
public function set_protocol($protocol = 'mail')
{
$this->protocol = in_array($protocol, $this->_protocols, TRUE) ? strtolower($protocol) : 'mail';
return $this;
}
// --------------------------------------------------------------------
/**
* Set Priority
*
* @param int
* @return object
*/
public function set_priority($n = 3)
{
$this->priority = preg_match('/^[1-5]$/', $n) ? (int) $n : 3;
return $this;
}
// --------------------------------------------------------------------
/**
* Set Newline Character
*
* @param string
* @return object
*/
public function set_newline($newline = "\n")
{
$this->newline = in_array($newline, array("\n", "\r\n", "\r")) ? $newline : "\n";
return $this;
}
// --------------------------------------------------------------------
/**
* Set CRLF
*
* @param string
* @return object
*/
public function set_crlf($crlf = "\n")
{
$this->crlf = ($crlf !== "\n" && $crlf !== "\r\n" && $crlf !== "\r") ? "\n" : $crlf;
return $this;
}
// --------------------------------------------------------------------
/**
* Set Message Boundary
*
* @return void
*/
protected function _set_boundaries()
{
$this->_alt_boundary = 'B_ALT_'.uniqid(''); // multipart/alternative
$this->_atc_boundary = 'B_ATC_'.uniqid(''); // attachment boundary
}
// --------------------------------------------------------------------
/**
* Get the Message ID
*
* @return string
*/
protected function _get_message_id()
{
$from = str_replace(array('>', '<'), '', $this->_headers['Return-Path']);
return '<'.uniqid('').strstr($from, '@').'>';
}
// --------------------------------------------------------------------
/**
* Get Mail Protocol
*
* @param bool
* @return mixed
*/
protected function _get_protocol($return = TRUE)
{
$this->protocol = strtolower($this->protocol);
in_array($this->protocol, $this->_protocols, TRUE) OR $this->protocol = 'mail';
if ($return === TRUE)
{
return $this->protocol;
}
}
// --------------------------------------------------------------------
/**
* Get Mail Encoding
*
* @param bool
* @return string
*/
protected function _get_encoding($return = TRUE)
{
in_array($this->_encoding, $this->_bit_depths) OR $this->_encoding = '8bit';
foreach ($this->_base_charsets as $charset)
{
if (strpos($charset, $this->charset) === 0)
{
$this->_encoding = '7bit';
}
}
if ($return === TRUE)
{
return $this->_encoding;
}
}
// --------------------------------------------------------------------
/**
* Get content type (text/html/attachment)
*
* @return string
*/
protected function _get_content_type()
{
if ($this->mailtype === 'html')
{
return (count($this->_attach_name) === 0) ? 'html' : 'html-attach';
}
elseif ($this->mailtype === 'text' && count($this->_attach_name) > 0)
{
return 'plain-attach';
}
else
{
return 'plain';
}
}
// --------------------------------------------------------------------
/**
* Set RFC 822 Date
*
* @return string
*/
protected function _set_date()
{
$timezone = date('Z');
$operator = ($timezone[0] === '-') ? '-' : '+';
$timezone = abs($timezone);
$timezone = floor($timezone/3600) * 100 + ($timezone % 3600) / 60;
return sprintf('%s %s%04d', date('D, j M Y H:i:s'), $operator, $timezone);
}
// --------------------------------------------------------------------
/**
* Mime message
*
* @return string
*/
protected function _get_mime_message()
{
return 'This is a multi-part message in MIME format.'.$this->newline.'Your email application may not support this format.';
}
// --------------------------------------------------------------------
/**
* Validate Email Address
*
* @param string
* @return bool
*/
public function validate_email($email)
{
if ( ! is_array($email))
{
$this->_set_error_message('lang:email_must_be_array');
return FALSE;
}
foreach ($email as $val)
{
if ( ! $this->valid_email($val))
{
$this->_set_error_message('lang:email_invalid_address', $val);
return FALSE;
}
}
return TRUE;
}
// --------------------------------------------------------------------
/**
* Email Validation
*
* @param string
* @return bool
*/
public function valid_email($email)
{
return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
}
// --------------------------------------------------------------------
/**
* Clean Extended Email Address: Joe Smith <joe@smith.com>
*
* @param string
* @return string
*/
public function clean_email($email)
{
if ( ! is_array($email))
{
return preg_match('/\<(.*)\>/', $email, $match) ? $match[1] : $email;
}
$clean_email = array();
foreach ($email as $addy)
{
$clean_email[] = preg_match('/\<(.*)\>/', $addy, $match) ? $match[1] : $addy;
}
return $clean_email;
}
// --------------------------------------------------------------------
/**
* Build alternative plain text message
*
* This public function provides the raw message for use
* in plain-text headers of HTML-formatted emails.
* If the user hasn't specified his own alternative message
* it creates one by stripping the HTML
*
* @return string
*/
protected function _get_alt_message()
{
if ($this->alt_message !== '')
{
return $this->word_wrap($this->alt_message, '76');
}
$body = preg_match('/\<body.*?\>(.*)\<\/body\>/si', $this->_body, $match) ? $match[1] : $this->_body;
$body = str_replace("\t", '', preg_replace('#<!--(.*)--\>#', '', trim(strip_tags($body))));
for ($i = 20; $i >= 3; $i--)
{
$body = str_replace(str_repeat("\n", $i), "\n\n", $body);
}
return $this->word_wrap($body, 76);
}
// --------------------------------------------------------------------
/**
* Word Wrap
*
* @param string
* @param int
* @return string
*/
public function word_wrap($str, $charlim = '')
{
// Se the character limit
if ($charlim === '')
{
$charlim = ($this->wrapchars === '') ? 76 : $this->wrapchars;
}
// Reduce multiple spaces
$str = preg_replace('| +|', ' ', $str);
// Standardize newlines
if (strpos($str, "\r") !== FALSE)
{
$str = str_replace(array("\r\n", "\r"), "\n", $str);
}
// If the current word is surrounded by {unwrap} tags we'll
// strip the entire chunk and replace it with a marker.
$unwrap = array();
if (preg_match_all('|(\{unwrap\}.+?\{/unwrap\})|s', $str, $matches))
{
for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
{
$unwrap[] = $matches[1][$i];
$str = str_replace($matches[1][$i], '{{unwrapped'.$i.'}}', $str);
}
}
// Use PHP's native public function to do the initial wordwrap.
// We set the cut flag to FALSE so that any individual words that are
// too long get left alone. In the next step we'll deal with them.
$str = wordwrap($str, $charlim, "\n", FALSE);
// Split the string into individual lines of text and cycle through them
$output = '';
foreach (explode("\n", $str) as $line)
{
// Is the line within the allowed character count?
// If so we'll join it to the output and continue
if (strlen($line) <= $charlim)
{
$output .= $line.$this->newline;
continue;
}
$temp = '';
do
{
// If the over-length word is a URL we won't wrap it
if (preg_match('!\[url.+\]|://|wwww.!', $line))
{
break;
}
// Trim the word down
$temp .= substr($line, 0, $charlim-1);
$line = substr($line, $charlim-1);
}
while (strlen($line) > $charlim);
// If $temp contains data it means we had to split up an over-length
// word into smaller chunks so we'll add it back to our current line
if ($temp !== '')
{
$output .= $temp.$this->newline;
}
$output .= $line.$this->newline;
}
// Put our markers back
if (count($unwrap) > 0)
{
foreach ($unwrap as $key => $val)
{
$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
}
}
return $output;
}
// --------------------------------------------------------------------
/**
* Build final headers
*
* @return string
*/
protected function _build_headers()
{
$this->set_header('X-Sender', $this->clean_email($this->_headers['From']));
$this->set_header('X-Mailer', $this->useragent);
$this->set_header('X-Priority', $this->_priorities[$this->priority - 1]);
$this->set_header('Message-ID', $this->_get_message_id());
$this->set_header('Mime-Version', '1.0');
}
// --------------------------------------------------------------------
/**
* Write Headers as a string
*
* @return void
*/
protected function _write_headers()
{
if ($this->protocol === 'mail')
{
$this->_subject = $this->_headers['Subject'];
unset($this->_headers['Subject']);
}
reset($this->_headers);
$this->_header_str = '';
foreach ($this->_headers as $key => $val)
{
$val = trim($val);
if ($val !== '')
{
$this->_header_str .= $key.': '.$val.$this->newline;
}
}
if ($this->_get_protocol() === 'mail')
{
$this->_header_str = rtrim($this->_header_str);
}
}
// --------------------------------------------------------------------
/**
* Build Final Body and attachments
*
* @return void
*/
protected function _build_message()
{
if ($this->wordwrap === TRUE && $this->mailtype !== 'html')
{
$this->_body = $this->word_wrap($this->_body);
}
$this->_set_boundaries();
$this->_write_headers();
$hdr = ($this->_get_protocol() === 'mail') ? $this->newline : '';
$body = '';
switch ($this->_get_content_type())
{
case 'plain' :
$hdr .= 'Content-Type: text/plain; charset='.$this->charset.$this->newline
.'Content-Transfer-Encoding: '.$this->_get_encoding();
if ($this->_get_protocol() === 'mail')
{
$this->_header_str .= $hdr;
$this->_finalbody = $this->_body;
}
else
{
$this->_finalbody = $hdr . $this->newline . $this->newline . $this->_body;
}
return;
case 'html' :
if ($this->send_multipart === FALSE)
{
$hdr .= 'Content-Type: text/html; charset='.$this->charset.$this->newline
.'Content-Transfer-Encoding: quoted-printable';
}
else
{
$hdr .= 'Content-Type: multipart/alternative; boundary="'.$this->_alt_boundary.'"'.$this->newline.$this->newline;
$body .= $this->_get_mime_message().$this->newline.$this->newline
.'--'.$this->_alt_boundary.$this->newline
.'Content-Type: text/plain; charset='.$this->charset.$this->newline
.'Content-Transfer-Encoding: '.$this->_get_encoding().$this->newline.$this->newline
.$this->_get_alt_message().$this->newline.$this->newline.'--'.$this->_alt_boundary.$this->newline
.'Content-Type: text/html; charset='.$this->charset.$this->newline
.'Content-Transfer-Encoding: quoted-printable'.$this->newline.$this->newline;
}
$this->_finalbody = $body.$this->_prep_quoted_printable($this->_body).$this->newline.$this->newline;
if ($this->_get_protocol() === 'mail')
{
$this->_header_str .= $hdr;
}
else
{
$this->_finalbody = $hdr.$this->_finalbody;
}
if ($this->send_multipart !== FALSE)
{
$this->_finalbody .= '--'.$this->_alt_boundary.'--';
}
return;
case 'plain-attach' :