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<?php |
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/* |
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Plugin Name: CryptX |
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Plugin URI: http://weber-nrw.de/ |
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Description: En-/Decrypt mailto-Links to prevent Spam Bots scanning Sorcecode for Emails. |
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Version: 1.0 |
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Author: Ralf Weber |
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Author URI: http://weber-nrw.de/ |
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*/ |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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/** |
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* @internal prevent from direct calls |
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*/ |
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if (!defined('ABSPATH')) { |
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return ; |
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} |
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|
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/** |
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* @internal prevent from second inclusion |
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*/ |
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if (!class_exists('cryptX')) { |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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load_plugin_textdomain('cryptx', PLUGINDIR . '/' . dirname(plugin_basename (__FILE__)) ); |
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|
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$cryptX_var = (array) get_option('cryptX'); |
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|
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/** |
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* "CryptX" WordPress Plugin |
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* |
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* @author Ralf Weber <ralf@weber-nrw.de> |
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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*/ |
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Class cryptX { |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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/** |
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* Constructor |
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* |
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* This constructor attaches the needer plugin hook callbacks |
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*/ |
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function cryptX() { |
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|
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global $cryptX_var; |
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|
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// attach the converstion handlers |
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// |
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if (@$cryptX_var[theContent]) { |
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if (@$cryptX_var[java]) { |
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add_filter('the_content', |
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array(&$this, '_encrypt')); |
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} else { |
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add_filter('the_content', |
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array(&$this, '_unicode')); |
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} |
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} |
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if (@$cryptX_var[theExcerpt]) { |
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if (@$cryptX_var[java]) { |
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add_filter('the_content', |
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array(&$this, '_encrypt')); |
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} else { |
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add_filter('the_content', |
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array(&$this, '_unicode')); |
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} |
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} |
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|
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// attach to admin menu |
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// |
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if (is_admin()) { |
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add_action('admin_menu', |
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array(&$this, '_menu') |
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); |
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} |
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|
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// attach to plugin installation |
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// |
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add_action( |
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'activate_' . str_replace( |
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DIRECTORY_SEPARATOR, '/', |
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str_replace( |
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realpath(ABSPATH . PLUGINDIR) . DIRECTORY_SEPARATOR, |
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'', __FILE__ |
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) |
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), |
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array(&$this, '_install') |
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); |
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|
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// attach javascript to Header |
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// |
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if (@$cryptX_var[java]) { |
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add_action( |
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'wp_head', |
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array(&$this, '_header') |
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); |
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} |
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|
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} // End function |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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/** |
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* Wrap _encrypt |
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* @param string $content |
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* @return string |
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*/ |
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function _encrypt($content) |
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{ |
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global $cryptX_var; |
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|
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preg_match_all('/<a[^>]*href=["|\'](.*)["|\']*>(.*)<\/a>/iUs', $content, $links, PREG_SET_ORDER); |
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|
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foreach( $links as $link ) { |
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|
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if(preg_match('/mailto:(.*)/', $link[1], $mail)) { |
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$crypt = ''; |
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$ascii = 0; |
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for ($i = 0; $i < strlen( $mail[1] ); $i++) { |
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$ascii = ord ( substr ( $mail[1], $i ) ); |
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if (8364 <= $char) { |
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$ascii = 128; |
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} |
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$crypt .= chr($ascii + 1); |
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} |
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$content = str_replace( $link[1], "javascript:DeCryptX('" . $crypt . "')", $content); |
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$new_mail = str_replace( "@", $cryptX_var[at], $link[2]); |
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$new_mail = str_replace( ".", $cryptX_var[dot], $new_mail); |
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$content = str_replace( $link[2], $new_mail, $content); |
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} |
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|
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} // foreach |
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return $content; |
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} |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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/** |
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* Wrap _unicode |
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* @param string $content |
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* @return string |
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*/ |
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function _unicode($content) |
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{ |
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global $cryptX_var; |
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|
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preg_match_all('/<a[^>]*href=["|\'](.*)["|\']*>(.*)<\/a>/iUs', $content, $links, PREG_SET_ORDER); |
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|
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foreach( $links as $link ) { |
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|
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if(preg_match('/mailto:(.*)/', $link[1], $mail)) { |
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$mailto = "mailto:" . $mail[1]; |
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$crypt = ''; |
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for ($i = 0; $i < strlen( $mailto ); $i++) { |
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$crypt .= "&#".ord ( substr ( $mailto, $i ) ); |
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} |
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$content = str_replace( $mailto, $crypt, $content); |
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$new_mail = str_replace( "@", $cryptX_var[at], $link[2]); |
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$new_mail = str_replace( ".", $cryptX_var[dot], $new_mail); |
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$content = str_replace( $link[2], $new_mail, $content); |
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} |
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|
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} // foreach |
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return $content; |
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} |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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/** |
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* Performs the routines required at plugin installation: |
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* in general introducing the settings array |
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*/ |
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function _install() { |
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add_option( |
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'cryptX', |
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array( |
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'at' => ' [at] ', |
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'dot' => ' [dot] ', |
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'theContent' => 1, |
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'theExcerpt' => 0, |
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'java' => 1, |
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) |
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); |
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} |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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/** |
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* Attach the menu page to the `Options` tab |
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*/ |
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function _header() |
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{ |
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$cryptX_script.= "<script type=\"text/javascript\" src=\"" . get_option('siteurl') . '/' . PLUGINDIR . '/' . dirname(plugin_basename (__FILE__)) . "/js/cryptx.js\"></script>\n"; |
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print($cryptX_script); |
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} |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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/** |
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* Attach the menu page to the `Options` tab |
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*/ |
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function _menu() { |
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add_submenu_page('options-general.php', |
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'CryptX', |
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'CryptX', 9, |
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__FILE__, |
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array($this, '_submenu') |
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); |
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} |
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|
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/** |
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* Handles and renders the menu page |
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*/ |
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function _submenu() { |
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global $cryptX_var; |
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|
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// sanitize referrer |
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// |
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$_SERVER['HTTP_REFERER'] = preg_replace( |
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'~&saved=.*$~Uis','', $_SERVER['HTTP_REFERER'] |
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); |
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|
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// information updated ? |
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// |
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if ($_POST['submit']) { |
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|
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// save |
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// |
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update_option( |
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'cryptX', |
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$_POST['cryptX_var'] |
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); |
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|
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die("<script>document.location.href = '{$_SERVER['HTTP_REFERER']}&saved=settings:" . time() . "';</script>"); |
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} |
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|
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// operation report detected |
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// |
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if (@$_GET['saved']) { |
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|
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list($saved, $ts) = explode(':', $_GET['saved']); |
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if (time() - $ts < 10) { |
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echo '<div id="message" class="updated fade"><p><strong>'; |
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|
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switch ($saved) { |
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case 'settings' : |
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echo 'Settings saved.'; |
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break; |
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} |
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|
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echo '</strong></p></div>'; |
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} |
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} |
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|
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// read the settings |
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// |
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//$cryptX = (array) get_option('cryptX'); |
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|
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?> |
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<!-- Start Optionen im Adminbereich (xhtml, au�erhalb PHP) --> |
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<div class="wrap"> |
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<h2><?php _e("CryptX Options...",'cryptx'); ?></h2> |
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<form method="post"> |
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<blockquote> |
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<table> |
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<tr> |
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<td valign="top"><?php _e("Replacement for '@'",'cryptx'); ?> |
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<input name="cryptX_var[at]" value="<?php echo $cryptX_var[at]; ?>" type="text" /></td> |
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</tr> |
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<tr> |
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<td valign="top"><?php _e("Replacement for '.'",'cryptx'); ?> |
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<input name="cryptX_var[dot]" value="<?php echo $cryptX_var[dot]; ?>" type="text" /></td> |
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</tr> |
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<tr> |
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<td valign="top"><input name="cryptX_var[theContent]" <?php echo ($cryptX_var[theContent]) ? 'checked="checked"' : ''; ?> type="checkbox" /> |
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<?php _e("Apply CryptX to the Content",'cryptx'); ?></td> |
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</tr> |
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<tr> |
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<td valign="top"><input name="cryptX_var[theExcerpt]" <?php echo ($cryptX_var[theExcerpt]) ? 'checked="checked"' : ''; ?> type="checkbox" /> |
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<?php _e("Apply CryptX to the Excerpt",'cryptx'); ?></td> |
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</tr> |
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<tr> |
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<td valign="top"> |
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<input name="cryptX_var[java]" <?php echo ($cryptX_var[java]) ? 'checked="checked"' : ''; ?> type="radio" value="1" /> |
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<?php _e("Use javascript to hide the Email-Link.",'cryptx'); ?><br /> |
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<input name="cryptX_var[java]" <?php echo (!$cryptX_var[java]) ? 'checked="checked"' : ''; ?> type="radio" value="0" /> |
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<?php _e("Use Unicode to hide the Email-Link.",'cryptx'); ?> |
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</td> |
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</tr> |
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<tr> |
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<td><input type="submit" name="submit" value="Update »" /></td> |
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</tr> |
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</table> |
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</blockquote> |
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</form> |
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</div> |
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<?php |
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} |
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|
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// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
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|
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|
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//--end-of-class |
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} |
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|
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} |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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/** |
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* Initiating the plugin... |
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* @see cryptX |
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*/ |
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new cryptX; |
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|
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?> |
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|
