[Sommaire] [Imprimer]

   1  <?php
   2  /**
   3   * Mail functions
   4   *
   5   * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
   6   * @author     Andreas Gohr <andi@splitbrain.org>
   7   */
   8  
   9    if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../').'/');
  10    require_once (DOKU_INC.'inc/utf8.php');
  11  
  12    // end of line for mail lines - RFC822 says CRLF but postfix (and other MTAs?)
  13    // think different
  14    if(!defined('MAILHEADER_EOL')) define('MAILHEADER_EOL',"\n");
  15    #define('MAILHEADER_ASCIIONLY',1);
  16  
  17  /**
  18   * UTF-8 autoencoding replacement for PHPs mail function
  19   *
  20   * Email address fields (To, From, Cc, Bcc can contain a textpart and an address
  21   * like this: 'Andreas Gohr <andi@splitbrain.org>' - the text part is encoded
  22   * automatically. You can seperate receivers by commas.
  23   *
  24   * @param string $to      Receiver of the mail (multiple seperated by commas)
  25   * @param string $subject Mailsubject
  26   * @param string $body    Messagebody
  27   * @param string $from    Sender address
  28   * @param string $cc      CarbonCopy receiver (multiple seperated by commas)
  29   * @param string $bcc     BlindCarbonCopy receiver (multiple seperated by commas)
  30   * @param string $headers Additional Headers (seperated by MAILHEADER_EOL
  31   * @param string $params  Additonal Sendmail params (passed to mail())
  32   *
  33   * @author Andreas Gohr <andi@splitbrain.org>
  34   * @see    mail()
  35   */
  36  function mail_send($to, $subject, $body, $from='', $cc='', $bcc='', $headers=null, $params=null){
  37    if(defined('MAILHEADER_ASCIIONLY')){
  38      $subject = utf8_deaccent($subject);
  39      $subject = utf8_strip($subject);
  40    }
  41  
  42    if(!utf8_isASCII($subject))
  43      $subject = '=?UTF-8?Q?'.mail_quotedprintable_encode($subject,0).'?=';
  44  
  45    $header  = '';
  46  
  47    // No named recipients for To: in Windows (see FS#652)
  48    $usenames = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? false : true;
  49  
  50    $to = mail_encode_address($to,'',$usenames);
  51    $header .= mail_encode_address($from,'From');
  52    $header .= mail_encode_address($cc,'Cc');
  53    $header .= mail_encode_address($bcc,'Bcc');
  54    $header .= 'MIME-Version: 1.0'.MAILHEADER_EOL;
  55    $header .= 'Content-Type: text/plain; charset=UTF-8'.MAILHEADER_EOL;
  56    $header .= 'Content-Transfer-Encoding: quoted-printable'.MAILHEADER_EOL;
  57    $header .= $headers;
  58    $header  = trim($header);
  59  
  60    $body = mail_quotedprintable_encode($body);
  61  
  62    if($params == null){
  63      return @mail($to,$subject,$body,$header);
  64    }else{
  65      return @mail($to,$subject,$body,$header,$params);
  66    }
  67  }
  68  
  69  /**
  70   * Encodes an email address header
  71   *
  72   * Unicode characters will be deaccented and encoded
  73   * quoted_printable for headers.
  74   * Addresses may not contain Non-ASCII data!
  75   *
  76   * Example:
  77   *   mail_encode_address("föö <foo@bar.com>, me@somewhere.com","TBcc");
  78   *
  79   * @param string  $string Multiple adresses separated by commas
  80   * @param string  $header Name of the header (To,Bcc,Cc,...)
  81   * @param boolean $names  Allow named Recipients?
  82   */
  83  function mail_encode_address($string,$header='',$names=true){
  84    $headers = '';
  85    $parts = split(',',$string);
  86    foreach ($parts as $part){
  87      $part = trim($part);
  88  
  89      // parse address
  90      if(preg_match('#(.*?)<(.*?)>#',$part,$matches)){
  91        $text = trim($matches[1]);
  92        $addr = $matches[2];
  93      }else{
  94        $addr = $part;
  95      }
  96  
  97      // skip empty ones
  98      if(empty($addr)){
  99        continue;
 100      }
 101  
 102      // FIXME: is there a way to encode the localpart of a emailaddress?
 103      if(!utf8_isASCII($addr)){
 104        msg(htmlspecialchars("E-Mail address <$addr> is not ASCII"),-1);
 105        continue;
 106      }
 107  
 108      if(!mail_isvalid($addr)){
 109        msg(htmlspecialchars("E-Mail address <$addr> is not valid"),-1);
 110        continue;
 111      }
 112  
 113      // text was given
 114      if(!empty($text) && $names){
 115        // add address quotes
 116        $addr = "<$addr>";
 117  
 118        if(defined('MAILHEADER_ASCIIONLY')){
 119          $text = utf8_deaccent($text);
 120          $text = utf8_strip($text);
 121        }
 122  
 123        if(!utf8_isASCII($text)){
 124          $text = '=?UTF-8?Q?'.mail_quotedprintable_encode($text,0).'?=';
 125        }
 126      }else{
 127        $text = '';
 128      }
 129  
 130      // add to header comma seperated and in new line to avoid too long headers
 131      if($headers != '') $headers .= ','.MAILHEADER_EOL.' ';
 132      $headers .= $text.$addr;
 133    }
 134  
 135    if(empty($headers)) return null;
 136  
 137    //if headername was given add it and close correctly
 138    if($header) $headers = $header.': '.$headers.MAILHEADER_EOL;
 139  
 140    return $headers;
 141  }
 142  
 143  /**
 144   * Uses a regular expresion to check if a given mail address is valid
 145   *
 146   * May not be completly RFC conform!
 147   *
 148   * @link    http://www.webmasterworld.com/forum88/135.htm
 149   *
 150   * @param   string $email the address to check
 151   * @return  bool          true if address is valid
 152   */
 153  function mail_isvalid($email){
 154    return eregi("^[0-9a-z]([+-_.]?[0-9a-z])*@[0-9a-z]([-.]?[0-9a-z])*\\.[a-z]{2,4}$", $email);
 155  }
 156  
 157  /**
 158   * Quoted printable encoding
 159   *
 160   * @author umu <umuAThrz.tu-chemnitz.de>
 161   * @link   http://www.php.net/manual/en/function.imap-8bit.php#61216
 162   */
 163  function mail_quotedprintable_encode($sText,$maxlen=74,$bEmulate_imap_8bit=true) {
 164    // split text into lines
 165    $aLines= preg_split("/(?:\r\n|\r|\n)/", $sText);
 166  
 167    for ($i=0;$i<count($aLines);$i++) {
 168      $sLine =& $aLines[$i];
 169      if (strlen($sLine)===0) continue; // do nothing, if empty
 170  
 171      $sRegExp = '/[^\x09\x20\x21-\x3C\x3E-\x7E]/e';
 172  
 173      // imap_8bit encodes x09 everywhere, not only at lineends,
 174      // for EBCDIC safeness encode !"#$@[\]^`{|}~,
 175      // for complete safeness encode every character :)
 176      if ($bEmulate_imap_8bit)
 177        $sRegExp = '/[^\x20\x21-\x3C\x3E-\x7E]/e';
 178  
 179      $sReplmt = 'sprintf( "=%02X", ord ( "$0" ) ) ;';
 180      $sLine = preg_replace( $sRegExp, $sReplmt, $sLine );
 181  
 182      // encode x09,x20 at lineends
 183      {
 184        $iLength = strlen($sLine);
 185        $iLastChar = ord($sLine{$iLength-1});
 186  
 187        //              !!!!!!!!
 188        // imap_8_bit does not encode x20 at the very end of a text,
 189        // here is, where I don't agree with imap_8_bit,
 190        // please correct me, if I'm wrong,
 191        // or comment next line for RFC2045 conformance, if you like
 192        if (!($bEmulate_imap_8bit && ($i==count($aLines)-1)))
 193  
 194        if (($iLastChar==0x09)||($iLastChar==0x20)) {
 195          $sLine{$iLength-1}='=';
 196          $sLine .= ($iLastChar==0x09)?'09':'20';
 197        }
 198      }    // imap_8bit encodes x20 before chr(13), too
 199      // although IMHO not requested by RFC2045, why not do it safer :)
 200      // and why not encode any x20 around chr(10) or chr(13)
 201      if ($bEmulate_imap_8bit) {
 202        $sLine=str_replace(' =0D','=20=0D',$sLine);
 203        //$sLine=str_replace(' =0A','=20=0A',$sLine);
 204        //$sLine=str_replace('=0D ','=0D=20',$sLine);
 205        //$sLine=str_replace('=0A ','=0A=20',$sLine);
 206      }
 207  
 208      // finally split into softlines no longer than $maxlen chars,
 209      // for even more safeness one could encode x09,x20
 210      // at the very first character of the line
 211      // and after soft linebreaks, as well,
 212      // but this wouldn't be caught by such an easy RegExp
 213      if($maxlen){
 214        preg_match_all( '/.{1,'.($maxlen - 2).'}([^=]{0,2})?/', $sLine, $aMatch );
 215        $sLine = implode( '=' . MAILHEADER_EOL, $aMatch[0] ); // add soft crlf's
 216      }
 217    }
 218  
 219    // join lines into text
 220    return implode(MAILHEADER_EOL,$aLines);
 221  }
 222  
 223  
 224  //Setup VIM: ex: et ts=2 enc=utf-8 :