mime.php

来自「This is the script which used on 10minut」· PHP 代码 · 共 1,096 行 · 第 1/3 页

        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 $subject String to set the subject to.
     *
     * @return void
     * @access public
     */
    function setSubject($subject)
    {
        $this->_headers['Subject'] = $subject;
    }

    /**
     * Set an email to the From (the sender) header
     *
     * @param string $email The email address to use
     *
     * @return void
     * @access public
     */
    function setFrom($email)
    {
        $this->_headers['From'] = $email;
    }

    /**
     * Add an email to the Cc (carbon copy) header
     * (multiple calls to this method are allowed)
     *
     * @param string $email The email direction to add
     *
     * @return void
     * @access public
     */
    function addCc($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 $email The email direction to add
     *
     * @return void
     * @access public
     */
    function addBcc($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
     * @param array $params Extra build parameters
     *
     * @return array Encoded data
     * @access private
     */
    function _encodeHeaders($input, $params = array())
    {
        
        $build_params = $this->_build_params;
        while (list($key, $value) = each($params)) {
            $build_params[$key] = $value;
        }
        //$hdr_name: Name of the heaer
        //$hdr_value: Full line of header value.
        //$hdr_value_out: The recombined $hdr_val-atoms, or the encoded string.
                
        $useIconv = true;        
        if (isset($build_params['ignore-iconv'])) {
            $useIconv = !$build_params['ignore-iconv'];
        }            
        foreach ($input as $hdr_name => $hdr_value) {
            if (preg_match('#([\x80-\xFF]){1}#', $hdr_value)) {
                if (function_exists('iconv_mime_encode') && $useIconv) {
                    $imePrefs = array();
                    if ($build_params['head_encoding'] == 'base64') {
                        $imePrefs['scheme'] = 'B';
                    } else {
                        $imePrefs['scheme'] = 'Q';
                    }
                    $imePrefs['input-charset']  = $build_params['head_charset'];
                    $imePrefs['output-charset'] = $build_params['head_charset'];
                    $imePrefs['line-length'] = 74;
                    $imePrefs['line-break-chars'] = "\r\n"; //Specified in RFC2047
                    
                    $hdr_value = iconv_mime_encode($hdr_name, $hdr_value, $imePrefs);
                    $hdr_value = preg_replace("#^{$hdr_name}\:\ #", "", $hdr_value);
                } elseif ($build_params['head_encoding'] == 'base64') {
                    //Base64 encoding has been selected.
                    //Base64 encode the entire string
                    $hdr_value = base64_encode($hdr_value);
                    
                    //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 first -2 is there so 
                    //the later regexp doesn't break any of the translated chars.
                    //The -2 on the first line-regexp is to compensate for the ": "
                    //between the header-name and the header value
                    $prefix = '=?' . $build_params['head_charset'] . '?B?';
                    $suffix = '?=';
                    $maxLength = 75 - strlen($prefix . $suffix) - 2;
                    $maxLength1stLine = $maxLength - strlen($hdr_name) - 2;

                    //We can cut base4 every 4 characters, so the real max
                    //we can get must be rounded down.
                    $maxLength = $maxLength - ($maxLength % 4);
                    $maxLength1stLine = $maxLength1stLine - ($maxLength1stLine % 4);
                    
                    $cutpoint = $maxLength1stLine;
                    $hdr_value_out = $hdr_value;
                    $output = "";
                    while ($hdr_value_out) {
                        //Split translated string at every $maxLength
                        $part = substr($hdr_value_out, 0, $cutpoint);
                        $hdr_value_out = substr($hdr_value_out, $cutpoint);
                        $cutpoint = $maxLength;
                        //RFC 2047 specifies that any split header should 
                        //be seperated by a CRLF SPACE. 
                        if ($output) {
                            $output .=  "\r\n ";
                        }
                        $output .= $prefix . $part . $suffix;
                    }
                    $hdr_value = $output;
                } else {
                    //quoted-printable encoding has been selected

                    //Fix for Bug #10298, Ota Mares <[e-mail]>
                    //Check if there is a double quote at beginning or end of
                    //the string to prevent that an open or closing quote gets 
                    //ignored because it is encapsuled by an encoding pre/suffix.
                    //Remove the double quote and set the specific prefix or 
                    //suffix variable so that we can concat the encoded string and
                    //the double quotes back together to get the intended string.
                    $quotePrefix = $quoteSuffix = '';
                    if ($hdr_value{0} == '"') {
                        $hdr_value = substr($hdr_value, 1);
                        $quotePrefix = '"';
                    }
                    if ($hdr_value{strlen($hdr_value)-1} == '"') {
                        $hdr_value = substr($hdr_value, 0, -1);
                        $quoteSuffix = '"';
                    }
                    
                    //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.
                    //The -2 on the first line-regexp is to compensate for the ": "
                    //between the header-name and the header value
                    $prefix = '=?' . $build_params['head_charset'] . '?Q?';
                    $suffix = '?=';
                    $maxLength = 75 - strlen($prefix . $suffix) - 2 - 1;
                    $maxLength1stLine = $maxLength - strlen($hdr_name) - 2;
                    $maxLength = $maxLength - 1;
                    
                    //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.
                    $reg1st = "|(.{0,$maxLength1stLine}[^\=][^\=])|";
                    $reg2nd = "|(.{0,$maxLength}[^\=][^\=])|";
                    //Fix for Bug #10298, Ota Mares <[e-mail]>
                    //Concat the double quotes and encoded string together
                    $hdr_value = $quotePrefix . $hdr_value . $quoteSuffix;
                    

                    $hdr_value_out = $hdr_value;
                    $realMax = $maxLength1stLine + strlen($prefix . $suffix);
                    if (strlen($hdr_value_out) >= $realMax) {
                        //Begin with the regexp for the first line.
                        $reg = $reg1st;
                        $output = "";
                        while ($hdr_value_out) {
                            //Split translated string at every $maxLength
                            //But make sure not to break any translated chars.
                            $found = preg_match($reg, $hdr_value_out, $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
                            //$hdr_value_out variable.
                            if ($found) {
                                $part = $matches[0];
                                $len = strlen($matches[0]);
                                $hdr_value_out = substr($hdr_value_out, $len);
                            } else {
                                $part = $hdr_value_out;
                                $hdr_value_out = "";
                            }
                            
                            //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_out = $output;
                    } else {
                        $hdr_value_out = $prefix . $hdr_value_out . $suffix;
                    }
                    $hdr_value = $hdr_value_out;
                }
            }
            $input[$hdr_name] = $hdr_value;
        }
        return $input;
    }

    /**
     * Set the object's end-of-line and define the constant if applicable.
     *
     * @param string $eol End Of Line sequence
     *
     * @return void
     * @access private
     */
    function _setEOL($eol)
    {
        $this->_eol = $eol;
        if (!defined('MAIL_MIME_CRLF')) {
            define('MAIL_MIME_CRLF', $this->_eol, true);
        }
    }

    

} // End of class