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195 lines
5.6 KiB
195 lines
5.6 KiB
<?php
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/**
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* Mail class to send e-mails
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*
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* @author Mark Alexander Hoschek <alex at mylittlehomepage dot net>
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* @copyright 2010 Mark Alexander Hoschek
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*/
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class Mail
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{
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const MAIL_HEADER_SEPARATOR = "\n"; // "\r\n" complies with RFC 2822 but might cause problems in some cases (see http://php.net/manual/en/function.mail.php)
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const MAIL_HEADER_TRANSFER_ENCODING = 'Q'; // 'B' for Base64 or 'Q' for Quoted-Printable
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private $charset = 'utf-8';
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public function __construct()
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{
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mb_internal_encoding($this->charset);
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}
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/**
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* Sets charset of the e-mail.
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*
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* @param string $charset
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*/
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public function set_charset($charset)
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{
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$this->charset = $charset;
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mb_internal_encoding($this->charset);
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}
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/**
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* Checks whether an e-mail address is (syntactically) valid or not.
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*
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* @param string $email
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* @return bool
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*/
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public function is_valid_email($email)
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{
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if(preg_match("/^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/", $email))
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{
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return true;
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}
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return false;
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}
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/**
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* escapes double-quotes and encloses display names in double-quotes if necessary
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*
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* @param string $display_name
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* @return string
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*/
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public function escape_display_name($display_name)
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{
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$display_name = str_replace('"', '\\"', $display_name);
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if(preg_match("/(\.|\;|\")/", $display_name))
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{
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return '"'.mb_encode_mimeheader($display_name, $this->charset, self::MAIL_HEADER_TRANSFER_ENCODING, self::MAIL_HEADER_SEPARATOR).'"';
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}
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else
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{
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return mb_encode_mimeheader($display_name, $this->charset, self::MAIL_HEADER_TRANSFER_ENCODING, self::MAIL_HEADER_SEPARATOR);
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}
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}
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/**
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* puts together e-mail display and address (e.g. "Joe Q. Public" <john.q.public@example.com>)
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*
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* @param string $display_name
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* @param string $email
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* @return string
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*/
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public function make_address($display_name, $email)
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{
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return $this->escape_display_name($display_name).' <'.$email.'>';
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}
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/**
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* removes line breaks to avoid e-mail header injections
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*
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* @param string $string
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* @return string
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*/
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private function mail_header_filter($string)
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{
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#return preg_replace("/(\015\012|\015|\012|content-transfer-encoding:|mime-version:|content-type:|subject:|to:|cc:|bcc:|from:|reply-to:)/ims", '', $string);
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#return preg_replace("/(\015\012|\015|\012|to:|cc:|bcc:|from:|reply-to:)/ims", '', $string);
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return preg_replace("/(\015\012|\015|\012)/", '', $string);
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}
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/**
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* Encode string to quoted-printable.
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* Original written by Andy Prevost http://phpmailer.sourceforge.net
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* and distributed under the Lesser General Public License (LGPL) http://www.gnu.org/copyleft/lesser.html
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*
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* @return string
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*/
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private function my_quoted_printable_encode($input, $line_max=76, $space_conv = false )
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{
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$hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
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$lines = preg_split('/(?:\r\n|\r|\n)/', $input);
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$eol = "\n";
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$escape = '=';
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$output = '';
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while(list(, $line) = each($lines))
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{
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$linlen = strlen($line);
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$newline = '';
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for($i = 0; $i < $linlen; $i++)
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{
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$c = substr($line, $i, 1);
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$dec = ord( $c );
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if(($i == 0) && ($dec == 46)) // convert first point in the line into =2E
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{
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$c = '=2E';
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}
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if($dec == 32)
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{
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if($i==($linlen-1)) // convert space at eol only
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{
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$c = '=20';
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}
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elseif($space_conv)
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{
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$c = '=20';
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}
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}
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elseif(($dec == 61) || ($dec < 32) || ($dec > 126)) // always encode "\t", which is *not* required
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{
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$h2 = floor($dec/16);
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$h1 = floor($dec%16);
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$c = $escape.$hex[$h2].$hex[$h1];
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}
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if((strlen($newline) + strlen($c)) >= $line_max) // CRLF is not counted
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{
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$output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay
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$newline = '';
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if($dec == 46) // check if newline first character will be point or not
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{
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$c = '=2E';
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}
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}
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$newline .= $c;
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} // end of for
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$output .= $newline.$eol;
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} // end of while
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return $output;
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}
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/**
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* sends an e-mail
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*
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* @param string $to
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* @param string $subject
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* @param string $message
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* @param string $headers
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* @return bool
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*/
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public function send($to, $from, $subject, $message, $additional_parameters='')
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{
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$to = $this->mail_header_filter($to);
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$subject = mb_encode_mimeheader($this->mail_header_filter($subject), $this->charset, self::MAIL_HEADER_TRANSFER_ENCODING, self::MAIL_HEADER_SEPARATOR);
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$message = $this->my_quoted_printable_encode($message);
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$headers = "From: " . $this->mail_header_filter($from) . self::MAIL_HEADER_SEPARATOR;
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$headers .= "MIME-Version: 1.0" . self::MAIL_HEADER_SEPARATOR;
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$headers .= "X-Sender-IP: ".$_SERVER["REMOTE_ADDR"] . self::MAIL_HEADER_SEPARATOR;
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#$headers .= "X-Mailer: " . BASE_URL . self::MAIL_HEADER_SEPARATOR;
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$headers .= "Content-Type: text/plain; charset=" . $this->charset . self::MAIL_HEADER_SEPARATOR;
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$headers .= "Content-Transfer-Encoding: quoted-printable";
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if($additional_parameters)
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{
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if(@mail($to, $subject, $message, $headers, $additional_parameters))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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else
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{
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if(@mail($to, $subject, $message, $headers))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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}
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}
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?>
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