/3.0/modules/ecard/lib/mime.php
PHP | 912 lines | 474 code | 58 blank | 380 comment | 73 complexity | 8c6be17210296a8e3696ab0b5239cd31 MD5 | raw file
Possible License(s): GPL-3.0, GPL-2.0, LGPL-2.1
- <?php
- /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
- // +-----------------------------------------------------------------------+
- // | Copyright (c) 2002-2003 Richard Heyes |
- // | Copyright (c) 2003-2005 The PHP Group |
- // | All rights reserved. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | o Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | o Redistributions in binary form must reproduce the above copyright |
- // | notice, this list of conditions and the following disclaimer in the |
- // | documentation and/or other materials provided with the distribution.|
- // | o The names of the authors may not be used to endorse or promote |
- // | products derived from this software without specific prior written |
- // | permission. |
- // | |
- // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
- // | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
- // | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
- // | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
- // | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- // | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- // | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- // | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
- // | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- // | |
- // +-----------------------------------------------------------------------+
- // | Author: Richard Heyes <richard@phpguru.org> |
- // | Tomas V.V.Cox <cox@idecnet.com> (port to PEAR) |
- // +-----------------------------------------------------------------------+
- //
- if (!class_exists('Mail_mimePart')) {
- require_once(MODPATH . "ecard/lib/mimePart.php");
- }
- if (class_exists('Mail_mime')) return;
- /**
- * Mime mail composer class. Can handle: text and html bodies, embedded html
- * images and attachments.
- * Documentation and examples of this class are avaible here:
- * http://pear.php.net/manual/
- *
- * @notes This class is based on HTML Mime Mail class from
- * Richard Heyes <richard@phpguru.org> which was based also
- * in the mime_mail.class by Tobias Ratschiller <tobias@dnet.it> and
- * Sascha Schumann <sascha@schumann.cx>
- *
- * @author Richard Heyes <richard.heyes@heyes-computing.net>
- * @author Tomas V.V.Cox <cox@idecnet.com>
- * @package Mail
- * @access public
- */
- class Mail_mime
- {
- /**
- * Contains the plain text part of the email
- * @var string
- */
- var $_txtbody;
- /**
- * Contains the html part of the email
- * @var string
- */
- var $_htmlbody;
- /**
- * contains the mime encoded text
- * @var string
- */
- var $_mime;
- /**
- * contains the multipart content
- * @var string
- */
- var $_multipart;
- /**
- * list of the attached images
- * @var array
- */
- var $_html_images = array();
- /**
- * list of the attachements
- * @var array
- */
- var $_parts = array();
- /**
- * Build parameters
- * @var array
- */
- var $_build_params = array();
- /**
- * Headers for the mail
- * @var array
- */
- var $_headers = array();
- /**
- * End Of Line sequence (for serialize)
- * @var string
- */
- var $_eol;
- /**
- * Constructor function
- *
- * @access public
- */
- function Mail_mime($crlf = "\r\n")
- {
- $this->_setEOL($crlf);
- $this->_build_params = array(
- 'head_encoding' => 'quoted-printable',
- 'text_encoding' => '7bit',
- 'html_encoding' => 'quoted-printable',
- '7bit_wrap' => 998,
- 'html_charset' => 'ISO-8859-1',
- 'text_charset' => 'ISO-8859-1',
- 'head_charset' => 'ISO-8859-1'
- );
- }
- /**
- * Wakeup (unserialize) - re-sets EOL constant
- *
- * @access private
- */
- function __wakeup()
- {
- $this->_setEOL($this->_eol);
- }
- /**
- * Accessor function to set the body text. Body text is used if
- * it's not an html mail being sent or else is used to fill the
- * text/plain part that emails clients who don't support
- * html should show.
- *
- * @param string $data Either a string or
- * the file name with the contents
- * @param bool $isfile If true the first param should be treated
- * as a file name, else as a string (default)
- * @param bool $append If true the text or file is appended to
- * the existing body, else the old body is
- * overwritten
- * @return mixed true on success or PEAR_Error object
- * @access public
- */
- function setTXTBody($data, $isfile = false, $append = false)
- {
- if (!$isfile) {
- if (!$append) {
- $this->_txtbody = $data;
- } else {
- $this->_txtbody .= $data;
- }
- } else {
- $cont = $this->_file2str($data);
- if (!isset($cont) /*PEAR::isError($cont)*/) {
- return $cont;
- }
- if (!$append) {
- $this->_txtbody = $cont;
- } else {
- $this->_txtbody .= $cont;
- }
- }
- return true;
- }
- /**
- * Adds a html part to the mail
- *
- * @param string $data Either a string or the file name with the
- * contents
- * @param bool $isfile If true the first param should be treated
- * as a file name, else as a string (default)
- * @return mixed true on success or PEAR_Error object
- * @access public
- */
- function setHTMLBody($data, $isfile = false)
- {
- if (!$isfile) {
- $this->_htmlbody = $data;
- } else {
- $cont = $this->_file2str($data);
- if (!isset($cont) /*PEAR::isError($cont)*/) {
- return $cont;
- }
- $this->_htmlbody = $cont;
- }
- return true;
- }
- /**
- * Adds an image to the list of embedded images.
- *
- * @param string $file The image file name OR image data itself
- * @param string $c_type The content type
- * @param string $name The filename of the image.
- * Only use if $file is the image data
- * @param bool $isfilename Whether $file is a filename or not
- * Defaults to true
- * @return mixed true on success or PEAR_Error object
- * @access public
- */
- function addHTMLImage($file, $c_type='application/octet-stream',
- $name = '', $isfilename = true)
- {
- $filedata = ($isfilename === true) ? $this->_file2str($file)
- : $file;
- if ($isfilename === true) {
- $filename = ($name == '' ? $file : $name);
- } else {
- $filename = $name;
- }
- if (!isset($filedata) /*PEAR::isError($filedata)*/) {
- return $filedata;
- }
- $this->_html_images[] = array(
- 'body' => $filedata,
- 'name' => $filename,
- 'c_type' => $c_type,
- 'cid' => md5(uniqid(time()))
- );
- return true;
- }
- /**
- * Adds a file to the list of attachments.
- *
- * @param string $file The file name of the file to attach
- * OR the file contents itself
- * @param string $c_type The content type
- * @param string $name The filename of the attachment
- * Only use if $file is the contents
- * @param bool $isFilename Whether $file is a filename or not
- * Defaults to true
- * @param string $encoding The type of encoding to use.
- * Defaults to base64.
- * Possible values: 7bit, 8bit, base64,
- * or quoted-printable.
- * @param string $disposition The content-disposition of this file
- * Defaults to attachment.
- * Possible values: attachment, inline.
- * @param string $charset The character set used in the filename
- * of this attachment.
- * @return mixed true on success or PEAR_Error object
- * @access public
- */
- function addAttachment($file, $c_type = 'application/octet-stream',
- $name = '', $isfilename = true,
- $encoding = 'base64',
- $disposition = 'attachment', $charset = '')
- {
- $filedata = ($isfilename === true) ? $this->_file2str($file)
- : $file;
- if ($isfilename === true) {
- // Force the name the user supplied, otherwise use $file
- $filename = (!empty($name)) ? $name : $file;
- } else {
- $filename = $name;
- }
- if (empty($filename)) {
- $err = null; /*PEAR::raiseError(
- "The supplied filename for the attachment can't be empty"
- );*/
- return $err;
- }
- $filename = basename($filename);
- if (!isset($filedata) /*PEAR::isError($filedata)*/) {
- return $filedata;
- }
- $this->_parts[] = array(
- 'body' => $filedata,
- 'name' => $filename,
- 'c_type' => $c_type,
- 'encoding' => $encoding,
- 'charset' => $charset,
- 'disposition' => $disposition
- );
- return true;
- }
- /**
- * Get the contents of the given file name as string
- *
- * @param string $file_name path of file to process
- * @return string contents of $file_name
- * @access private
- */
- function &_file2str($file_name)
- {
- if (!is_readable($file_name)) {
- $err = null; //PEAR::raiseError('File is not readable ' . $file_name);
- return $err;
- }
- if (!$fd = fopen($file_name, 'rb')) {
- $err = null; //PEAR::raiseError('Could not open ' . $file_name);
- return $err;
- }
- $filesize = filesize($file_name);
- if ($filesize == 0){
- $cont = "";
- }else{
- if ($magic_quote_setting = get_magic_quotes_runtime()){
- @set_magic_quotes_runtime(0);
- }
- $cont = fread($fd, $filesize);
- if ($magic_quote_setting){
- @set_magic_quotes_runtime($magic_quote_setting);
- }
- }
- fclose($fd);
- return $cont;
- }
- /**
- * Adds a text subpart to the mimePart object and
- * returns it during the build process.
- *
- * @param mixed The object to add the part to, or
- * null if a new object is to be created.
- * @param string The text to add.
- * @return object The text mimePart object
- * @access private
- */
- function &_addTextPart(&$obj, $text)
- {
- $params['content_type'] = 'text/plain';
- $params['encoding'] = $this->_build_params['text_encoding'];
- $params['charset'] = $this->_build_params['text_charset'];
- if (is_object($obj)) {
- $ret = $obj->addSubpart($text, $params);
- return $ret;
- } else {
- $ret = new Mail_mimePart($text, $params);
- return $ret;
- }
- }
- /**
- * Adds a html subpart to the mimePart object and
- * returns it during the build process.
- *
- * @param mixed The object to add the part to, or
- * null if a new object is to be created.
- * @return object The html mimePart object
- * @access private
- */
- function &_addHtmlPart(&$obj)
- {
- $params['content_type'] = 'text/html';
- $params['encoding'] = $this->_build_params['html_encoding'];
- $params['charset'] = $this->_build_params['html_charset'];
- if (is_object($obj)) {
- $ret = $obj->addSubpart($this->_htmlbody, $params);
- return $ret;
- } else {
- $ret = new Mail_mimePart($this->_htmlbody, $params);
- return $ret;
- }
- }
- /**
- * Creates a new mimePart object, using multipart/mixed as
- * the initial content-type and returns it during the
- * build process.
- *
- * @return object The multipart/mixed mimePart object
- * @access private
- */
- function &_addMixedPart()
- {
- $params['content_type'] = 'multipart/mixed';
- $ret = new Mail_mimePart('', $params);
- return $ret;
- }
- /**
- * Adds a multipart/alternative part to a mimePart
- * object (or creates one), and returns it during
- * the build process.
- *
- * @param mixed The object to add the part to, or
- * null if a new object is to be created.
- * @return object The multipart/mixed mimePart object
- * @access private
- */
- function &_addAlternativePart(&$obj)
- {
- $params['content_type'] = 'multipart/alternative';
- if (is_object($obj)) {
- return $obj->addSubpart('', $params);
- } else {
- $ret = new Mail_mimePart('', $params);
- return $ret;
- }
- }
- /**
- * Adds a multipart/related part to a mimePart
- * object (or creates one), and returns it during
- * the build process.
- *
- * @param mixed The object to add the part to, or
- * null if a new object is to be created
- * @return object The multipart/mixed mimePart object
- * @access private
- */
- function &_addRelatedPart(&$obj)
- {
- $params['content_type'] = 'multipart/related';
- if (is_object($obj)) {
- return $obj->addSubpart('', $params);
- } else {
- $ret = new Mail_mimePart('', $params);
- return $ret;
- }
- }
- /**
- * Adds an html image subpart to a mimePart object
- * and returns it during the build process.
- *
- * @param object The mimePart to add the image to
- * @param array The image information
- * @return object The image mimePart object
- * @access private
- */
- function &_addHtmlImagePart(&$obj, $value)
- {
- $params['content_type'] = $value['c_type'] . '; ' .
- 'name="' . $value['name'] . '"';
- $params['encoding'] = 'base64';
- $params['disposition'] = 'inline';
- $params['dfilename'] = $value['name'];
- $params['cid'] = $value['cid'];
- $ret = $obj->addSubpart($value['body'], $params);
- return $ret;
-
- }
- /**
- * Adds an attachment subpart to a mimePart object
- * and returns it during the build process.
- *
- * @param object The mimePart to add the image to
- * @param array The attachment information
- * @return object The image mimePart object
- * @access private
- */
- function &_addAttachmentPart(&$obj, $value)
- {
- $params['dfilename'] = $value['name'];
- $params['encoding'] = $value['encoding'];
- if ($value['disposition'] != "inline") {
- $fname = array("fname" => $value['name']);
- $fname_enc = $this->_encodeHeaders($fname);
- $params['dfilename'] = $fname_enc['fname'];
- }
- if ($value['charset']) {
- $params['charset'] = $value['charset'];
- }
- $params['content_type'] = $value['c_type'] . '; ' .
- 'name="' . $params['dfilename'] . '"';
- $params['disposition'] = isset($value['disposition']) ?
- $value['disposition'] : 'attachment';
- $ret = $obj->addSubpart($value['body'], $params);
- return $ret;
- }
- /**
- * Returns the complete e-mail, ready to send using an alternative
- * mail delivery method. Note that only the mailpart that is made
- * with Mail_Mime is created. This means that,
- * YOU WILL HAVE NO TO: HEADERS UNLESS YOU SET IT YOURSELF
- * using the $xtra_headers parameter!
- *
- * @param string $separation The separation etween these two parts.
- * @param array $build_params The Build parameters passed to the
- * &get() function. See &get for more info.
- * @param array $xtra_headers The extra headers that should be passed
- * to the &headers() function.
- * See that function for more info.
- * @param bool $overwrite Overwrite the existing headers with new.
- * @return string The complete e-mail.
- * @access public
- */
- function getMessage($separation = null, $build_params = null, $xtra_headers = null, $overwrite = false)
- {
- if ($separation === null)
- {
- $separation = MAIL_MIME_CRLF;
- }
- $body = $this->get($build_params);
- $head = $this->txtHeaders($xtra_headers, $overwrite);
- $mail = $head . $separation . $body;
- return $mail;
- }
- /**
- * Builds the multipart message from the list ($this->_parts) and
- * returns the mime content.
- *
- * @param array Build parameters that change the way the email
- * is built. Should be associative. Can contain:
- * head_encoding - What encoding to use for the headers.
- * Options: quoted-printable or base64
- * Default is quoted-printable
- * text_encoding - What encoding to use for plain text
- * Options: 7bit, 8bit, base64, or quoted-printable
- * Default is 7bit
- * html_encoding - What encoding to use for html
- * Options: 7bit, 8bit, base64, or quoted-printable
- * Default is quoted-printable
- * 7bit_wrap - Number of characters before text is
- * wrapped in 7bit encoding
- * Default is 998
- * html_charset - The character set to use for html.
- * Default is iso-8859-1
- * text_charset - The character set to use for text.
- * Default is iso-8859-1
- * head_charset - The character set to use for headers.
- * Default is iso-8859-1
- * @return string The mime content
- * @access public
- */
- function &get($build_params = null)
- {
- if (isset($build_params)) {
- while (list($key, $value) = each($build_params)) {
- $this->_build_params[$key] = $value;
- }
- }
- if (!empty($this->_html_images) AND isset($this->_htmlbody)) {
- foreach ($this->_html_images as $key => $value) {
- $regex = array();
- $regex[] = '#(\s)((?i)src|background|href(?-i))\s*=\s*(["\']?)' .
- preg_quote($value['name'], '#') . '\3#';
- $regex[] = '#(?i)url(?-i)\(\s*(["\']?)' .
- preg_quote($value['name'], '#') . '\1\s*\)#';
- $rep = array();
- $rep[] = '\1\2=\3cid:' . $value['cid'] .'\3';
- $rep[] = 'url(\1cid:' . $value['cid'] . '\2)';
- $this->_htmlbody = preg_replace($regex, $rep,
- $this->_htmlbody
- );
- $this->_html_images[$key]['name'] = basename($this->_html_images[$key]['name']);
- }
- }
- $null = null;
- $attachments = !empty($this->_parts) ? true : false;
- $html_images = !empty($this->_html_images) ? true : false;
- $html = !empty($this->_htmlbody) ? true : false;
- $text = (!$html AND !empty($this->_txtbody)) ? true : false;
- switch (true) {
- case $text AND !$attachments:
- $message =& $this->_addTextPart($null, $this->_txtbody);
- break;
- case !$text AND !$html AND $attachments:
- $message =& $this->_addMixedPart();
- for ($i = 0; $i < count($this->_parts); $i++) {
- $this->_addAttachmentPart($message, $this->_parts[$i]);
- }
- break;
- case $text AND $attachments:
- $message =& $this->_addMixedPart();
- $this->_addTextPart($message, $this->_txtbody);
- for ($i = 0; $i < count($this->_parts); $i++) {
- $this->_addAttachmentPart($message, $this->_parts[$i]);
- }
- break;
- case $html AND !$attachments AND !$html_images:
- if (isset($this->_txtbody)) {
- $message =& $this->_addAlternativePart($null);
- $this->_addTextPart($message, $this->_txtbody);
- $this->_addHtmlPart($message);
- } else {
- $message =& $this->_addHtmlPart($null);
- }
- break;
- case $html AND !$attachments AND $html_images:
- if (isset($this->_txtbody)) {
- $message =& $this->_addAlternativePart($null);
- $this->_addTextPart($message, $this->_txtbody);
- $related =& $this->_addRelatedPart($message);
- } else {
- $message =& $this->_addRelatedPart($null);
- $related =& $message;
- }
- $this->_addHtmlPart($related);
- for ($i = 0; $i < count($this->_html_images); $i++) {
- $this->_addHtmlImagePart($related, $this->_html_images[$i]);
- }
- break;
- case $html AND $attachments AND !$html_images:
- $message =& $this->_addMixedPart();
- if (isset($this->_txtbody)) {
- $alt =& $this->_addAlternativePart($message);
- $this->_addTextPart($alt, $this->_txtbody);
- $this->_addHtmlPart($alt);
- } else {
- $this->_addHtmlPart($message);
- }
- for ($i = 0; $i < count($this->_parts); $i++) {
- $this->_addAttachmentPart($message, $this->_parts[$i]);
- }
- break;
- case $html AND $attachments AND $html_images:
- $message =& $this->_addMixedPart();
- if (isset($this->_txtbody)) {
- $alt =& $this->_addAlternativePart($message);
- $this->_addTextPart($alt, $this->_txtbody);
- $rel =& $this->_addRelatedPart($alt);
- } else {
- $rel =& $this->_addRelatedPart($message);
- }
- $this->_addHtmlPart($rel);
- for ($i = 0; $i < count($this->_html_images); $i++) {
- $this->_addHtmlImagePart($rel, $this->_html_images[$i]);
- }
- for ($i = 0; $i < count($this->_parts); $i++) {
- $this->_addAttachmentPart($message, $this->_parts[$i]);
- }
- break;
- }
- if (isset($message)) {
- $output = $message->encode();
- $this->_headers = array_merge($this->_headers,
- $output['headers']);
- $body = $output['body'];
- return $body;
- } else {
- $ret = false;
- return $ret;
- }
- }
- /**
- * Returns an array with the headers needed to prepend to the email
- * (MIME-Version and Content-Type). Format of argument is:
- * $array['header-name'] = 'header-value';
- *
- * @param array $xtra_headers Assoc array with any extra headers.
- * Optional.
- * @param bool $overwrite Overwrite already existing headers.
- * @return array Assoc array with the mime headers
- * @access public
- */
- function &headers($xtra_headers = null, $overwrite = false)
- {
- // Content-Type header should already be present,
- // So just add mime version header
- $headers['MIME-Version'] = '1.0';
- if (isset($xtra_headers)) {
- $headers = array_merge($headers, $xtra_headers);
- }
- if ($overwrite){
- $this->_headers = array_merge($this->_headers, $headers);
- }else{
- $this->_headers = array_merge($headers, $this->_headers);
- }
- $encodedHeaders = $this->_encodeHeaders($this->_headers);
- return $encodedHeaders;
- }
- /**
- * Get the text version of the headers
- * (usefull if you want to use the PHP mail() function)
- *
- * @param array $xtra_headers Assoc array with any extra headers.
- * Optional.
- * @param bool $overwrite Overwrite the existing heaers with new.
- * @return string Plain text headers
- * @access public
- */
- function txtHeaders($xtra_headers = null, $overwrite = false)
- {
- $headers = $this->headers($xtra_headers, $overwrite);
- $ret = '';
- foreach ($headers as $key => $val) {
- $ret .= "$key: $val" . MAIL_MIME_CRLF;
- }
- return $ret;
- }
- /**
- * Sets the Subject header
- *
- * @param string $subject String to set the subject to
- * access public
- */
- function setSubject($subject)
- {
- $this->_headers['Subject'] = $subject;
- }
- /**
- * Set an email to the From (the sender) header
- *
- * @param string $email The email direction to add
- * @access public
- */
- function setFrom($email)
- {
- $this->_headers['From'] = $email;
- }
- /**
- * Add an email to the Cc (carbon copy) header
- * (multiple calls to this method are allowed)
- *
- * @param string $email The email direction to add
- * @access public
- */
- function addCc($email)
- {
- if (isset($this->_headers['Cc'])) {
- $this->_headers['Cc'] .= ", $email";
- } else {
- $this->_headers['Cc'] = $email;
- }
- }
- /**
- * Add an email to the Bcc (blank carbon copy) header
- * (multiple calls to this method are allowed)
- *
- * @param string $email The email direction to add
- * @access public
- */
- function addBcc($email)
- {
- if (isset($this->_headers['Bcc'])) {
- $this->_headers['Bcc'] .= ", $email";
- } else {
- $this->_headers['Bcc'] = $email;
- }
- }
- /**
- * Since the PHP send function requires you to specifiy
- * recipients (To: header) separately from the other
- * headers, the To: header is not properly encoded.
- * To fix this, you can use this public method to
- * encode your recipients before sending to the send
- * function
- *
- * @param string $recipients A comma-delimited list of recipients
- * @return string Encoded data
- * @access public
- */
- function encodeRecipients($recipients)
- {
- $input = array("To" => $recipients);
- $retval = $this->_encodeHeaders($input);
- return $retval["To"] ;
- }
- /**
- * Encodes a header as per RFC2047
- *
- * @param array $input The header data to encode
- * @return array Encoded data
- * @access private
- */
- function _encodeHeaders($input)
- {
- foreach ($input as $hdr_name => $hdr_value) {
- if (function_exists('iconv_mime_encode') && preg_match('#[\x80-\xFF]{1}#', $hdr_value)){
- $imePref = array();
- if ($this->_build_params['head_encoding'] == 'base64'){
- $imePrefs['scheme'] = 'B';
- }else{
- $imePrefs['scheme'] = 'Q';
- }
- $imePrefs['input-charset'] = $this->_build_params['head_charset'];
- $imePrefs['output-charset'] = $this->_build_params['head_charset'];
- $hdr_value = iconv_mime_encode($hdr_name, $hdr_value, $imePrefs);
- $hdr_value = preg_replace("#^{$hdr_name}\:\ #", "", $hdr_value);
- }elseif (preg_match('#[\x80-\xFF]{1}#', $hdr_value)){
- //This header contains non ASCII chars and should be encoded.
- switch ($this->_build_params['head_encoding']) {
- case 'base64':
- //Base64 encoding has been selected.
-
- //Generate the header using the specified params and dynamicly
- //determine the maximum length of such strings.
- //75 is the value specified in the RFC. The -2 is there so
- //the later regexp doesn't break any of the translated chars.
- $prefix = '=?' . $this->_build_params['head_charset'] . '?B?';
- $suffix = '?=';
- $maxLength = 75 - strlen($prefix . $suffix) - 2;
- $maxLength1stLine = $maxLength - strlen($hdr_name);
-
- //Base64 encode the entire string
- $hdr_value = base64_encode($hdr_value);
- //This regexp will break base64-encoded text at every
- //$maxLength but will not break any encoded letters.
- $reg1st = "|.{0,$maxLength1stLine}[^\=][^\=]|";
- $reg2nd = "|.{0,$maxLength}[^\=][^\=]|";
- break;
- case 'quoted-printable':
- default:
- //quoted-printable encoding has been selected
-
- //Generate the header using the specified params and dynamicly
- //determine the maximum length of such strings.
- //75 is the value specified in the RFC. The -2 is there so
- //the later regexp doesn't break any of the translated chars.
- $prefix = '=?' . $this->_build_params['head_charset'] . '?Q?';
- $suffix = '?=';
- $maxLength = 75 - strlen($prefix . $suffix) - 2;
- $maxLength1stLine = $maxLength - strlen($hdr_name);
-
- //Replace all special characters used by the encoder.
- $search = array("=", "_", "?", " ");
- $replace = array("=3D", "=5F", "=3F", "_");
- $hdr_value = str_replace($search, $replace, $hdr_value);
-
- //Replace all extended characters (\x80-xFF) with their
- //ASCII values.
- $hdr_value = preg_replace(
- '#([\x80-\xFF])#e',
- '"=" . strtoupper(dechex(ord("\1")))',
- $hdr_value
- );
- //This regexp will break QP-encoded text at every $maxLength
- //but will not break any encoded letters.
- $reg1st = "|(.{0,$maxLength})[^\=]|";
- $reg2nd = "|(.{0,$maxLength})[^\=]|";
- break;
- }
- //Begin with the regexp for the first line.
- $reg = $reg1st;
- $output = "";
- while ($hdr_value) {
- //Split translated string at every $maxLength
- //But make sure not to break any translated chars.
- $found = preg_match($reg, $hdr_value, $matches);
-
- //After this first line, we need to use a different
- //regexp for the first line.
- $reg = $reg2nd;
- //Save the found part and encapsulate it in the
- //prefix & suffix. Then remove the part from the
- //$hdr_value variable.
- if ($found){
- $part = $matches[0];
- $hdr_value = substr($hdr_value, strlen($matches[0]));
- }else{
- $part = $hdr_value;
- $hdr_value = "";
- }
-
- //RFC 2047 specifies that any split header should be seperated
- //by a CRLF SPACE.
- if ($output){
- $output .= "\r\n ";
- }
- $output .= $prefix . $part . $suffix;
- }
- $hdr_value = $output;
- }
- $input[$hdr_name] = $hdr_value;
- }
- return $input;
- }
- /**
- * Set the object's end-of-line and define the constant if applicable
- *
- * @param string $eol End Of Line sequence
- * @access private
- */
- function _setEOL($eol)
- {
- $this->_eol = $eol;
- if (!defined('MAIL_MIME_CRLF')) {
- define('MAIL_MIME_CRLF', $this->_eol, true);
- }
- }
-
- } // End of class
- ?>