* @author credits to Jason Sweat (added cc, bcc and subject functionality)
*
* @param array $params parameters
*
* @return string
*/
function smarty_function_mailto($params)
{
static $_allowed_encoding = [
'javascript' => true,
'javascript_charcode' => true,
'hex' => true,
'none' => true
];
$extra = '';
if (empty($params[ 'address' ])) {
trigger_error("mailto: missing 'address' parameter", E_USER_WARNING);
return;
} else {
$address = $params[ 'address' ];
}
$text = $address;
// netscape and mozilla do not decode %40 (@) in BCC field (bug?)
// so, don't encode it.
$mail_parms = [];
foreach ($params as $var => $value) {
switch ($var) {
case 'cc':
case 'bcc':
case 'followupto':
if (!empty($value)) {
$mail_parms[] = $var . '=' . str_replace(['%40', '%2C'], ['@', ','], rawurlencode($value));
}
break;
case 'subject':
case 'newsgroups':
$mail_parms[] = $var . '=' . rawurlencode($value);
break;
case 'extra':
case 'text':
$$var = $value;
// no break
default:
}
}
if ($mail_parms) {
$address .= '?' . join('&', $mail_parms);
}
$encode = (empty($params[ 'encode' ])) ? 'none' : $params[ 'encode' ];
if (!isset($_allowed_encoding[ $encode ])) {
trigger_error(
"mailto: 'encode' parameter must be none, javascript, javascript_charcode or hex",
E_USER_WARNING
);
return;
}
$string = '' . htmlspecialchars($text, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, Smarty::$_CHARSET) . '';
if ($encode === 'javascript') {
$js_encode = '';
for ($x = 0, $_length = strlen($string); $x < $_length; $x++) {
$js_encode .= '%' . bin2hex($string[ $x ]);
}
return '';
} elseif ($encode === 'javascript_charcode') {
for ($x = 0, $_length = strlen($string); $x < $_length; $x++) {
$ord[] = ord($string[ $x ]);
}
return '';
} elseif ($encode === 'hex') {
preg_match('!^(.*)(\?.*)$!', $address, $match);
if (!empty($match[ 2 ])) {
trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.", E_USER_WARNING);
return;
}
$address_encode = '';
for ($x = 0, $_length = strlen($address); $x < $_length; $x++) {
if (preg_match('!\w!' . Smarty::$_UTF8_MODIFIER, $address[ $x ])) {
$address_encode .= '%' . bin2hex($address[ $x ]);
} else {
$address_encode .= $address[ $x ];
}
}
$text_encode = '';
for ($x = 0, $_length = strlen($text); $x < $_length; $x++) {
$text_encode .= '&#x' . bin2hex($text[ $x ]) . ';';
}
$mailto = "mailto:";
return '' . $text_encode . '';
} else {
// no encoding
return $string;
}
}