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;
}