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334 lines (285 loc) · 11.4 KB
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<?php
/**
* Mail functions
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
if(!defined('DOKU_INC')) die('meh.');
// end of line for mail lines - RFC822 says CRLF but postfix (and other MTAs?)
// think different
if(!defined('MAILHEADER_EOL')) define('MAILHEADER_EOL',"\n");
#define('MAILHEADER_ASCIIONLY',1);
/**
* Patterns for use in email detection and validation
*
* NOTE: there is an unquoted '/' in RFC2822_ATEXT, it must remain unquoted to be used in the parser
* the pattern uses non-capturing groups as captured groups aren't allowed in the parser
* select pattern delimiters with care!
*
* May not be completly RFC conform!
* @link http://www.faqs.org/rfcs/rfc2822.html (paras 3.4.1 & 3.2.4)
*
* @author Chris Smith <chris@jalakai.co.uk>
* Check if a given mail address is valid
*/
if (!defined('RFC2822_ATEXT')) define('RFC2822_ATEXT',"0-9a-zA-Z!#$%&'*+/=?^_`{|}~-");
if (!defined('PREG_PATTERN_VALID_EMAIL')) define('PREG_PATTERN_VALID_EMAIL', '['.RFC2822_ATEXT.']+(?:\.['.RFC2822_ATEXT.']+)*@(?i:[0-9a-z][0-9a-z-]*\.)+(?i:[a-z]{2,4}|museum|travel)');
/**
* Prepare mailfrom replacement patterns
*
* Also prepares a mailfromnobody config that contains an autoconstructed address
* if the mailfrom one is userdependent and this might not be wanted (subscriptions)
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function mail_setup(){
global $conf;
global $USERINFO;
// auto constructed address
$host = @parse_url(DOKU_URL,PHP_URL_HOST);
if(!$host) $host = 'example.com';
$noreply = 'noreply@'.$host;
$replace = array();
if(!empty($USERINFO['mail'])){
$replace['@MAIL@'] = $USERINFO['mail'];
}else{
$replace['@MAIL@'] = $noreply;
}
if(!empty($_SERVER['REMOTE_USER'])){
$replace['@USER@'] = $_SERVER['REMOTE_USER'];
}else{
$replace['@USER@'] = 'noreply';
}
if(!empty($USERINFO['name'])){
$replace['@NAME@'] = $USERINFO['name'];
}else{
$replace['@NAME@'] = '';
}
// apply replacements
$from = str_replace(array_keys($replace),
array_values($replace),
$conf['mailfrom']);
// any replacements done? set different mailfromnone
if($from != $conf['mailfrom']){
$conf['mailfromnobody'] = $noreply;
}else{
$conf['mailfromnobody'] = $from;
}
$conf['mailfrom'] = $from;
}
/**
* UTF-8 autoencoding replacement for PHPs mail function
*
* Email address fields (To, From, Cc, Bcc can contain a textpart and an address
* like this: 'Andreas Gohr <andi@splitbrain.org>' - the text part is encoded
* automatically. You can seperate receivers by commas.
*
* @param string $to Receiver of the mail (multiple seperated by commas)
* @param string $subject Mailsubject
* @param string $body Messagebody
* @param string $from Sender address
* @param string $cc CarbonCopy receiver (multiple seperated by commas)
* @param string $bcc BlindCarbonCopy receiver (multiple seperated by commas)
* @param string $headers Additional Headers (seperated by MAILHEADER_EOL
* @param string $params Additonal Sendmail params (passed to mail())
*
* @author Andreas Gohr <andi@splitbrain.org>
* @see mail()
*/
function mail_send($to, $subject, $body, $from='', $cc='', $bcc='', $headers=null, $params=null){
$message = compact('to','subject','body','from','cc','bcc','headers','params');
return trigger_event('MAIL_MESSAGE_SEND',$message,'_mail_send_action');
}
function _mail_send_action($data) {
// retrieve parameters from event data, $to, $subject, $body, $from, $cc, $bcc, $headers, $params
$to = $data['to'];
$subject = $data['subject'];
$body = $data['body'];
// add robustness in case plugin removes any of these optional values
$from = isset($data['from']) ? $data['from'] : '';
$cc = isset($data['cc']) ? $data['cc'] : '';
$bcc = isset($data['bcc']) ? $data['bcc'] : '';
$headers = isset($data['headers']) ? $data['headers'] : null;
$params = isset($data['params']) ? $data['params'] : null;
// discard mail request if no recipients are available
if(trim($to) === '' && trim($cc) === '' && trim($bcc) === '') return false;
// end additional code to support event ... original mail_send() code from here
if(defined('MAILHEADER_ASCIIONLY')){
$subject = utf8_deaccent($subject);
$subject = utf8_strip($subject);
}
if(!utf8_isASCII($subject)) {
$enc_subj = '=?UTF-8?Q?'.mail_quotedprintable_encode($subject,0).'?=';
// Spaces must be encoded according to rfc2047. Use the "_" shorthand
$enc_subj = preg_replace('/ /', '_', $enc_subj);
// quoted printable has length restriction, use base64 if needed
if(strlen($subject) > 74){
$enc_subj = '=?UTF-8?B?'.base64_encode($subject).'?=';
}
$subject = $enc_subj;
}
$header = '';
// No named recipients for To: in Windows (see FS#652)
$usenames = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? false : true;
$to = mail_encode_address($to,'',$usenames);
$header .= mail_encode_address($from,'From');
$header .= mail_encode_address($cc,'Cc');
$header .= mail_encode_address($bcc,'Bcc');
$header .= 'MIME-Version: 1.0'.MAILHEADER_EOL;
$header .= 'Content-Type: text/plain; charset=UTF-8'.MAILHEADER_EOL;
$header .= 'Content-Transfer-Encoding: quoted-printable'.MAILHEADER_EOL;
$header .= $headers;
$header = trim($header);
$body = mail_quotedprintable_encode($body);
if($params == null){
return @mail($to,$subject,$body,$header);
}else{
return @mail($to,$subject,$body,$header,$params);
}
}
/**
* Encodes an email address header
*
* Unicode characters will be deaccented and encoded
* quoted_printable for headers.
* Addresses may not contain Non-ASCII data!
*
* Example:
* mail_encode_address("föö <foo@bar.com>, me@somewhere.com","TBcc");
*
* @param string $string Multiple adresses separated by commas
* @param string $header Name of the header (To,Bcc,Cc,...)
* @param boolean $names Allow named Recipients?
*/
function mail_encode_address($string,$header='',$names=true){
$headers = '';
$parts = explode(',',$string);
foreach ($parts as $part){
$part = trim($part);
// parse address
if(preg_match('#(.*?)<(.*?)>#',$part,$matches)){
$text = trim($matches[1]);
$addr = $matches[2];
}else{
$addr = $part;
}
// skip empty ones
if(empty($addr)){
continue;
}
// FIXME: is there a way to encode the localpart of a emailaddress?
if(!utf8_isASCII($addr)){
msg(htmlspecialchars("E-Mail address <$addr> is not ASCII"),-1);
continue;
}
if(!mail_isvalid($addr)){
msg(htmlspecialchars("E-Mail address <$addr> is not valid"),-1);
continue;
}
// text was given
if(!empty($text) && $names){
// add address quotes
$addr = "<$addr>";
if(defined('MAILHEADER_ASCIIONLY')){
$text = utf8_deaccent($text);
$text = utf8_strip($text);
}
if(!utf8_isASCII($text)){
// put the quotes outside as in =?UTF-8?Q?"Elan Ruusam=C3=A4e"?= vs "=?UTF-8?Q?Elan Ruusam=C3=A4e?="
if (preg_match('/^"(.+)"$/', $text, $matches)) {
$text = '"=?UTF-8?Q?'.mail_quotedprintable_encode($matches[1], 0).'?="';
} else {
$text = '=?UTF-8?Q?'.mail_quotedprintable_encode($text, 0).'?=';
}
// additionally the space character should be encoded as =20 (or each
// word QP encoded separately).
// however this is needed only in mail headers, not globally in mail_quotedprintable_encode().
$text = str_replace(" ", "=20", $text);
}
}else{
$text = '';
}
// add to header comma seperated
if($headers != ''){
$headers .= ',';
if($header) $headers .= MAILHEADER_EOL.' '; // avoid overlong mail headers
}
$headers .= $text.' '.$addr;
}
if(empty($headers)) return null;
//if headername was given add it and close correctly
if($header) $headers = $header.': '.$headers.MAILHEADER_EOL;
return $headers;
}
/**
* Check if a given mail address is valid
*
* @param string $email the address to check
* @return bool true if address is valid
*/
function mail_isvalid($email){
$validator = new EmailAddressValidator;
$validator->allowLocalAddresses = true;
return $validator->check_email_address($email);
}
/**
* Quoted printable encoding
*
* @author umu <umuAThrz.tu-chemnitz.de>
* @link http://www.php.net/manual/en/function.imap-8bit.php#61216
*/
function mail_quotedprintable_encode($sText,$maxlen=74,$bEmulate_imap_8bit=true) {
// split text into lines
$aLines= preg_split("/(?:\r\n|\r|\n)/", $sText);
$cnt = count($aLines);
for ($i=0;$i<$cnt;$i++) {
$sLine =& $aLines[$i];
if (strlen($sLine)===0) continue; // do nothing, if empty
$sRegExp = '/[^\x09\x20\x21-\x3C\x3E-\x7E]/e';
// imap_8bit encodes x09 everywhere, not only at lineends,
// for EBCDIC safeness encode !"#$@[\]^`{|}~,
// for complete safeness encode every character :)
if ($bEmulate_imap_8bit)
$sRegExp = '/[^\x20\x21-\x3C\x3E-\x7E]/';
$sLine = preg_replace_callback( $sRegExp, 'mail_quotedprintable_encode_callback', $sLine );
// encode x09,x20 at lineends
{
$iLength = strlen($sLine);
$iLastChar = ord($sLine{$iLength-1});
// !!!!!!!!
// imap_8_bit does not encode x20 at the very end of a text,
// here is, where I don't agree with imap_8_bit,
// please correct me, if I'm wrong,
// or comment next line for RFC2045 conformance, if you like
if (!($bEmulate_imap_8bit && ($i==count($aLines)-1))){
if (($iLastChar==0x09)||($iLastChar==0x20)) {
$sLine{$iLength-1}='=';
$sLine .= ($iLastChar==0x09)?'09':'20';
}
}
} // imap_8bit encodes x20 before chr(13), too
// although IMHO not requested by RFC2045, why not do it safer :)
// and why not encode any x20 around chr(10) or chr(13)
if ($bEmulate_imap_8bit) {
$sLine=str_replace(' =0D','=20=0D',$sLine);
//$sLine=str_replace(' =0A','=20=0A',$sLine);
//$sLine=str_replace('=0D ','=0D=20',$sLine);
//$sLine=str_replace('=0A ','=0A=20',$sLine);
}
// finally split into softlines no longer than $maxlen chars,
// for even more safeness one could encode x09,x20
// at the very first character of the line
// and after soft linebreaks, as well,
// but this wouldn't be caught by such an easy RegExp
if($maxlen){
preg_match_all( '/.{1,'.($maxlen - 2).'}([^=]{0,2})?/', $sLine, $aMatch );
$sLine = implode( '=' . MAILHEADER_EOL, $aMatch[0] ); // add soft crlf's
}
}
// join lines into text
return implode(MAILHEADER_EOL,$aLines);
}
function mail_quotedprintable_encode_callback($matches){
return sprintf( "=%02X", ord ( $matches[0] ) ) ;
}