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<?php
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/**
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* Smarty plugin
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*
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* @package Smarty
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* @subpackage PluginsFunction
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*/
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/**
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* Smarty {mailto} function plugin
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* Type: function
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* Name: mailto
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* Date: May 21, 2002
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* Purpose: automate mailto address link creation, and optionally encode them.
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* Params:
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*
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* - address - (required) - e-mail address
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* - text - (optional) - text to display, default is address
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* - encode - (optional) - can be one of:
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* * none : no encoding (default)
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* * javascript : encode with javascript
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* * javascript_charcode : encode with javascript charcode
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* * hex : encode with hexadecimal (no javascript)
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* - cc - (optional) - address(es) to carbon copy
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* - bcc - (optional) - address(es) to blind carbon copy
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* - subject - (optional) - e-mail subject
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* - newsgroups - (optional) - newsgroup(s) to post to
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* - followupto - (optional) - address(es) to follow up to
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* - extra - (optional) - extra tags for the href link
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*
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* Examples:
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*
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* {mailto address="me@domain.com"}
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* {mailto address="me@domain.com" encode="javascript"}
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* {mailto address="me@domain.com" encode="hex"}
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* {mailto address="me@domain.com" subject="Hello to you!"}
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* {mailto address="me@domain.com" cc="you@domain.com,they@domain.com"}
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* {mailto address="me@domain.com" extra='class="mailto"'}
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*
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* @link https://www.smarty.net/manual/en/language.function.mailto.php {mailto}
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* (Smarty online manual)
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* @version 1.2
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* @author Monte Ohrt <monte at ohrt dot com>
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* @author credits to Jason Sweat (added cc, bcc and subject functionality)
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*
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* @param array $params parameters
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*
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* @return string
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*/
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function smarty_function_mailto($params)
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{
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static $_allowed_encoding = [
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'javascript' => true,
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'javascript_charcode' => true,
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'hex' => true,
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'none' => true
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];
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$extra = '';
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if (empty($params[ 'address' ])) {
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trigger_error("mailto: missing 'address' parameter", E_USER_WARNING);
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return;
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} else {
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$address = $params[ 'address' ];
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}
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$text = $address;
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// netscape and mozilla do not decode %40 (@) in BCC field (bug?)
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// so, don't encode it.
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$mail_parms = [];
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foreach ($params as $var => $value) {
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switch ($var) {
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case 'cc':
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case 'bcc':
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case 'followupto':
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if (!empty($value)) {
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$mail_parms[] = $var . '=' . str_replace(['%40', '%2C'], ['@', ','], rawurlencode($value));
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}
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break;
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case 'subject':
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case 'newsgroups':
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$mail_parms[] = $var . '=' . rawurlencode($value);
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break;
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case 'extra':
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case 'text':
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$$var = $value;
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// no break
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default:
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}
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}
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if ($mail_parms) {
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$address .= '?' . join('&', $mail_parms);
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}
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$encode = (empty($params[ 'encode' ])) ? 'none' : $params[ 'encode' ];
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if (!isset($_allowed_encoding[ $encode ])) {
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trigger_error(
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"mailto: 'encode' parameter must be none, javascript, javascript_charcode or hex",
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E_USER_WARNING
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);
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return;
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}
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$string = '<a href="mailto:' . htmlspecialchars($address, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, Smarty::$_CHARSET) .
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'" ' . $extra . '>' . htmlspecialchars($text, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, Smarty::$_CHARSET) . '</a>';
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if ($encode === 'javascript') {
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$js_encode = '';
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for ($x = 0, $_length = strlen($string); $x < $_length; $x++) {
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$js_encode .= '%' . bin2hex($string[ $x ]);
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}
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return '<script type="text/javascript">document.write(unescape(\'' . $js_encode . '\'))</script>';
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} elseif ($encode === 'javascript_charcode') {
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for ($x = 0, $_length = strlen($string); $x < $_length; $x++) {
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$ord[] = ord($string[ $x ]);
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}
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return '<script type="text/javascript">document.write(String.fromCharCode(' . implode(',', $ord) . '))</script>';
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} elseif ($encode === 'hex') {
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preg_match('!^(.*)(\?.*)$!', $address, $match);
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if (!empty($match[ 2 ])) {
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trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.", E_USER_WARNING);
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return;
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}
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$address_encode = '';
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for ($x = 0, $_length = strlen($address); $x < $_length; $x++) {
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if (preg_match('!\w!' . Smarty::$_UTF8_MODIFIER, $address[ $x ])) {
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$address_encode .= '%' . bin2hex($address[ $x ]);
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} else {
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$address_encode .= $address[ $x ];
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}
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}
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$text_encode = '';
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for ($x = 0, $_length = strlen($text); $x < $_length; $x++) {
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$text_encode .= '&#x' . bin2hex($text[ $x ]) . ';';
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}
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$mailto = "mailto:";
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return '<a href="' . $mailto . $address_encode . '" ' . $extra . '>' . $text_encode . '</a>';
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} else {
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// no encoding
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return $string;
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}
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}
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