Extension:EmailObfuscator

require_once("/extensions/EmailObfuscator/obfuscate_email.php");

<?php
 
# Defines the main function to be executed for this extension.
$wgExtensionFunctions[] = 'obfuscateEmailAddress';
 
# Sets the hook to be executed once the parser has stripped HTML tags.
$wgHooks['ParserAfterStrip'][] = 'obfuscateEmailAddress';
 
# This function initiates the hook for the parser to convert <mail></mail>
# tags to obfuscated email addresses.
function obfuscateEmailAddress() {
        // Declaring the global parser..
        global $wgParser;
 
        // Setting the hook to parse <mail></mail> tags from the parser output..
        $wgParser->setHook( 'mail', 'startObfuscate' );
}
 
# This function extracts the parameters from the <mail></mail> tags and
# the text between the <mail> and </mail> tags and formats them as "<a href=''>"
# tags and writes them in the document.
function startObfuscate( $input, $argv ) {
        // Obfuscating the 'mailto:' text..
        $email_prefix = textObfuscator('mailto:');
 
        // Fetching the 'address' parameter from the <mail> tag..
        $email = $argv['address'];
 
        // Fetching the description parameter from the <mail> tag..
        $desc = $argv['description'];
 
        // Checking for a valid email address..
        $email = preg_replace("/([\\w\\d\\.\\_]+@[\\w\\d\\.\\_]+)/e", "textObfuscator('\$1')", $email);
 
        // If a description parameter exists.. then obfuscate that too..
        if ($desc != '') {
                // Obfuscate the description since it exists..
                $desc = textObfuscator($desc);
 
                // If a description parameter exists then print it in the link..
                return "<a href=\"" . htmlspecialchars($email_prefix . $email) . "\" description=\"" . htmlspecialchars($desc) . "\">" . htmlspecialchars($input) . "</a>";
        } else {
                // If a description parameter does not exist then just print the link with the 'mailto' URL..
                return "<a href=\"" . htmlspecialchars($email_prefix . $email) . "\">" . htmlspecialchars($input) . "</a>";
        }
}
 
# This function does the actual obfuscation
function textObfuscator( $text ) {
        $output = "";
        for( $i=0 ; $i<strlen($text) ; $i++ ){
                // Convert each character in the string to its equivalent ASCII code..
                $output .= "&#". ord(substr($text, $i, 1)) .";";
        }
        // Return the obfuscated string..
        return $output;
}