2,31 → 2,31 |
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/* |
* ViaThinkSoft Anti-Spam Script for PHP |
* (C) 2009-2013 ViaThinkSoft |
* Revision: 2013-03-04 (Version 4.01) |
* (C) 2009-2022 ViaThinkSoft |
* Revision: 2022-01-09 (Version 4.1) |
* License: Apache 2.0 License |
*/ |
|
function secure_email($email, $linktext, $crypt_linktext) |
{ |
// No new lines to avoid a JavaScript error! |
$linktext = str_replace("\r", ' ', $linktext); |
$linktext = str_replace("\n", ' ', $linktext); |
class VtsAntiSpam4 { |
|
if (!defined('ALAS_INCLUDED')) { |
// Anfagswert über aktuelle Mikrosekunde setzen |
public $garbageLength = 5; |
|
public function __construct() { |
self::randomize(); |
} |
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private static function randomize() { |
// Anfagswert über aktuelle Mikrosekunde setzen |
// http://de2.php.net/manual/de/function.srand.php |
function make_seed() { |
list($usec, $sec) = explode(' ', microtime()); |
return (float) $sec + ((float) $usec * 100000); |
$seed = (int)($sec + ((float)$usec * 100000)); |
srand($seed); |
} |
srand(make_seed()); |
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define('ALAS_GARBARGE_LENGTH', 5); |
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private function RandomString($len) { |
// http://www.jonasjohn.de/snippets/php/rand-str.htm |
function RandomString($len) { |
$randstr = ''; |
srand((double)microtime()*1000000); |
//srand((double)microtime()*1000000); |
for($i=0;$i<$len;$i++) { |
$n = rand(48,120); |
while (($n >= 58 && $n <= 64) || ($n >= 91 && $n <= 96)) { |
37,8 → 37,8 |
return $randstr; |
} |
|
function js_randombreaks() { |
$len = rand(0, ALAS_GARBARGE_LENGTH); |
private function js_randombreaks() { |
$len = rand(0, $this->garbageLength); |
$r = ''; |
$one_line_comment = false; |
for($i=0;$i<$len;$i++) { |
47,7 → 47,7 |
$r .= ' '; |
} else if ($m == 1) { |
$r .= '//'; |
$r .= RandomString($i); |
$r .= $this->RandomString($i); |
$one_line_comment = true; |
} else if ($m == 2) { |
$r .= "\r\n"; |
60,42 → 60,45 |
return $r; |
} |
|
function alas_js_crypt($text) { |
private function alas_js_crypt($text) { |
$tmp = ''; |
for ($i=0; $i<strlen($text); $i++) { |
$tmp .= js_randombreaks(); |
$tmp .= $this->js_randombreaks(); |
$tmp .= 'document.write("&#'.ord(substr($text, $i, 1)).';");'; |
$tmp .= js_randombreaks(); |
$tmp .= $this->js_randombreaks(); |
} |
$tmp = js_randombreaks().$tmp.js_randombreaks(); |
$tmp = $this->js_randombreaks().$tmp.$this->js_randombreaks(); |
return $tmp; |
} |
|
function alas_noscript_crypt($text){ |
private function alas_noscript_crypt($text){ |
$tmp = ''; |
for ($i=0; $i<strlen($text); $i++) { |
$tmp .= '<span style="display:inline;">&#'.ord(substr($text, $i, 1)).';</span>'; |
$tmp .= '<!--'.js_randombreaks().'-->'; |
$tmp .= '<span style="display:none;">'.RandomString(rand(0, ALAS_GARBARGE_LENGTH)).'</span>'; |
$tmp .= '<!--'.$this->js_randombreaks().'-->'; |
$tmp .= '<span style="display:none;">'.$this->RandomString(rand(0, $this->garbageLength)).'</span>'; |
} |
return $tmp; |
} |
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function alas_js_write($text) { |
private function alas_js_write($text) { |
$text = str_replace('\\', '\\\\', $text); |
$text = str_replace('"', '\"', $text); |
$text = str_replace('/', '\/', $text); // W3C Validation </a> -> <\/a> |
|
$ret = ''; |
$ret .= js_randombreaks(); |
$ret .= $this->js_randombreaks(); |
$ret .= 'document.write("'.$text.'");'; |
$ret .= js_randombreaks(); |
$ret .= $this->js_randombreaks(); |
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return $ret; |
} |
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define('ALAS_INCLUDED', true); |
} |
public function secure_email($email, $linktext, $crypt_linktext) |
{ |
// No new lines to avoid a JavaScript error! |
$linktext = str_replace("\r", ' ', $linktext); |
$linktext = str_replace("\n", ' ', $linktext); |
|
$aus = ''; |
if ($email != '') { |
104,15 → 107,15 |
|
$aus .= "<!-- BEGIN $title [ID $zid] -->\r\n"; |
$aus .= '<script language="JavaScript" type="text/javascript"><!--'."\n"; |
$aus .= alas_js_write('<a href="'); |
$aus .= alas_js_crypt('mailto:'.$email); |
$aus .= alas_js_write('">'); |
$aus .= $crypt_linktext ? alas_js_crypt($linktext) : alas_js_write($linktext); |
$aus .= alas_js_write('</a>').'// --></script>'; |
$aus .= $this->alas_js_write('<a href="'); |
$aus .= $this->alas_js_crypt('mailto:'.$email); |
$aus .= $this->alas_js_write('">'); |
$aus .= $crypt_linktext ? $this->alas_js_crypt($linktext) : $this->alas_js_write($linktext); |
$aus .= $this->alas_js_write('</a>').'// --></script>'; |
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$aus .= '<noscript>'; |
if ($linktext != $email) $aus .= ($crypt_linktext ? alas_noscript_crypt($linktext) : $linktext).' '; |
$aus .= alas_noscript_crypt("[ $email ]"); |
if ($linktext != $email) $aus .= ($crypt_linktext ? $this->alas_noscript_crypt($linktext) : $linktext).' '; |
$aus .= $this->alas_noscript_crypt("[ $email ]"); |
$aus .= '</noscript>'; |
$aus .= "\r\n<!-- END $title [ID $zid] -->\r\n"; |
} |
120,13 → 123,40 |
return $aus; |
} |
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function secure_email_autodetect($email, $linktext) { |
// Automatisch erkennen, ob der $linktext für Spambots interessant ist oder nicht |
public function secure_email_autodetect($email, $linktext) { |
// Automatisch erkennen, ob der $linktext für Spambots interessant ist oder nicht |
$pos = strpos($linktext, '@'); |
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return secure_email($email, $linktext, $pos !== false); |
return $this->secure_email($email, $linktext, $pos !== false); |
} |
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public function secure_email_identical_text($email) { |
return $this->secure_email_autodetect($email, $email); |
} |
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} |
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# ------------------------------------------------------------------------------ |
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function secure_email($email, $linktext, $crypt_linktext, $css_class='') { |
if (!empty($css_class)) { |
// TODO |
throw new Exception("CSSClass is not yet implemented in AntiSpam v4"); |
} |
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$antispam = new VtsAntiSpam4(); |
$res = $antispam->secure_email($email, $linktext, $crypt_linktext); |
return $res; |
} |
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function secure_email_autodetect($email, $linktext) { |
$antispam = new VtsAntiSpam4(); |
$res = $antispam->secure_email_autodetect($email, $linktext); |
return $res; |
} |
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function secure_email_identical_text($email) { |
return secure_email_autodetect($email, $email); |
$antispam = new VtsAntiSpam4(); |
$res = $antispam->secure_email_identical_text($email); |
return $res; |
} |