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   1  <?php
   2  /**
   3   * Smarty plugin
   4   * @package Smarty
   5   * @subpackage plugins
   6   */
   7  
   8  
   9  /**
  10   * Smarty {mailto} function plugin
  11   *
  12   * Type:     function<br>
  13   * Name:     mailto<br>
  14   * Date:     May 21, 2002
  15   * Purpose:  automate mailto address link creation, and optionally
  16   *           encode them.<br>
  17   * Input:<br>
  18   *         - address = e-mail address
  19   *         - text = (optional) text to display, default is address
  20   *         - encode = (optional) can be one of:
  21   *                * none : no encoding (default)
  22   *                * javascript : encode with javascript
  23   *                * javascript_charcode : encode with javascript charcode
  24   *                * hex : encode with hexidecimal (no javascript)
  25   *         - cc = (optional) address(es) to carbon copy
  26   *         - bcc = (optional) address(es) to blind carbon copy
  27   *         - subject = (optional) e-mail subject
  28   *         - newsgroups = (optional) newsgroup(s) to post to
  29   *         - followupto = (optional) address(es) to follow up to
  30   *         - extra = (optional) extra tags for the href link
  31   *
  32   * Examples:
  33   * <pre>
  34   * {mailto address="me@domain.com"}
  35   * {mailto address="me@domain.com" encode="javascript"}
  36   * {mailto address="me@domain.com" encode="hex"}
  37   * {mailto address="me@domain.com" subject="Hello to you!"}
  38   * {mailto address="me@domain.com" cc="you@domain.com,they@domain.com"}
  39   * {mailto address="me@domain.com" extra='class="mailto"'}
  40   * </pre>
  41   * @link http://smarty.php.net/manual/en/language.function.mailto.php {mailto}
  42   *          (Smarty online manual)
  43   * @version  1.2
  44   * @author   Monte Ohrt <monte at ohrt dot com>
  45   * @author   credits to Jason Sweat (added cc, bcc and subject functionality)
  46   * @param    array
  47   * @param    Smarty
  48   * @return   string
  49   */
  50  function smarty_function_mailto($params, &$smarty)
  51  {
  52      $extra = '';
  53  
  54      if (empty($params['address'])) {
  55          $smarty->trigger_error("mailto: missing 'address' parameter");
  56          return;
  57      } else {
  58          $address = $params['address'];
  59      }
  60  
  61      $text = $address;
  62  
  63      // netscape and mozilla do not decode %40 (@) and %2C (,) in BCC field (bug?)
  64      // so, don't encode them.
  65      $search = array('%40', '%2C');
  66      $replace  = array('@', ',');
  67      $mail_parms = array();
  68      foreach ($params as $var=>$value) {
  69          switch ($var) {
  70              case 'cc':
  71              case 'bcc':
  72              case 'followupto':
  73                  if (!empty($value))
  74                      $mail_parms[] = $var.'='.str_replace($search,$replace,rawurlencode($value));
  75                  break;
  76                  
  77              case 'subject':
  78              case 'newsgroups':
  79                  $mail_parms[] = $var.'='.rawurlencode($value);
  80                  break;
  81  
  82              case 'extra':
  83              case 'text':
  84                  $$var = $value;
  85  
  86              default:
  87          }
  88      }
  89  
  90      $mail_parm_vals = '';
  91      for ($i=0; $i<count($mail_parms); $i++) {
  92          $mail_parm_vals .= (0==$i) ? '?' : '&';
  93          $mail_parm_vals .= $mail_parms[$i];
  94      }
  95      $address .= $mail_parm_vals;
  96  
  97      $encode = (empty($params['encode'])) ? 'none' : $params['encode'];
  98      if (!in_array($encode,array('javascript','javascript_charcode','hex','none')) ) {
  99          $smarty->trigger_error("mailto: 'encode' parameter must be none, javascript or hex");
 100          return;
 101      }
 102  
 103      if ($encode == 'javascript' ) {
 104          $string = 'document.write(\'<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>\');';
 105  
 106          $js_encode = '';
 107          for ($x=0; $x < strlen($string); $x++) {
 108              $js_encode .= '%' . bin2hex($string[$x]);
 109          }
 110  
 111          return '<script type="text/javascript">eval(unescape(\''.$js_encode.'\'))</script>';
 112  
 113      } elseif ($encode == 'javascript_charcode' ) {
 114          $string = '<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>';
 115  
 116          for($x = 0, $y = strlen($string); $x < $y; $x++ ) {
 117              $ord[] = ord($string[$x]);   
 118          }
 119  
 120          $_ret = "<script type=\"text/javascript\" language=\"javascript\">\n";
 121          $_ret .= "<!--\n";
 122          $_ret .= "{document.write(String.fromCharCode(";
 123          $_ret .= implode(',',$ord);
 124          $_ret .= "))";
 125          $_ret .= "}\n";
 126          $_ret .= "//-->\n";
 127          $_ret .= "</script>\n";
 128          
 129          return $_ret;
 130          
 131          
 132      } elseif ($encode == 'hex') {
 133  
 134          preg_match('!^(.*)(\?.*)$!',$address,$match);
 135          if(!empty($match[2])) {
 136              $smarty->trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.");
 137              return;
 138          }
 139          $address_encode = '';
 140          for ($x=0; $x < strlen($address); $x++) {
 141              if(preg_match('!\w!',$address[$x])) {
 142                  $address_encode .= '%' . bin2hex($address[$x]);
 143              } else {
 144                  $address_encode .= $address[$x];
 145              }
 146          }
 147          $text_encode = '';
 148          for ($x=0; $x < strlen($text); $x++) {
 149              $text_encode .= '&#x' . bin2hex($text[$x]).';';
 150          }
 151  
 152          $mailto = "&#109;&#97;&#105;&#108;&#116;&#111;&#58;";
 153          return '<a href="'.$mailto.$address_encode.'" '.$extra.'>'.$text_encode.'</a>';
 154  
 155      } else {
 156          // no encoding
 157          return '<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>';
 158  
 159      }
 160  
 161  }
 162  
 163  /* vim: set expandtab: */
 164  
 165  ?>