simplyFavicon/_public.php

<?php
# -- BEGIN LICENSE BLOCK ----------------------------------
# This file is part of simplyFavicon, a plugin for Dotclear 2.
# 
# Copyright (c) 2009-2011 JC Denis and contributors
# jcdenis@gdwd.com
# 
# Licensed under the GPL version 2.0 license.
# A copy of this license is available in LICENSE file or at
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# -- END LICENSE BLOCK ------------------------------------

if (!defined('DC_RC_PATH')){
	return;
}

$core->addBehavior('publicHeadContent', ['publicSimplyFavicon','publicHeadContent']);

class publicSimplyFavicon extends dcUrlHandlers
{
	public static $mimetypes = array(
		'ico' => 'image/x-icon',
		'png' => 'image/png',
		'bmp' => 'image/bmp',
		'gif' => 'image/gif',
		'jpg' => 'image/jpeg',
		'mng' => 'video/x-mng'
	);
	
	public static function simplyFaviconUrl($arg)
	{
		global $core;
		
		$mimetypes = self::$mimetypes;
		$public_path = path::real(path::fullFromRoot($core->blog->settings->system->public_path, DC_ROOT)) . '/favicon.';

		if (!$core->blog->settings->system->simply_favicon 
		 || empty($arg) 
		 || !array_key_exists($arg, $mimetypes) 
		 || file_exists($public_path . 'favicon' . $arg)
		) {
			throw new Exception ("Page not found", 404); 
		}
		else {
			header('Content-Type: ' . $mimetypes[$arg] . ';');
			readfile($public_path . $arg);
			exit;
		}
	}
	
	public static function publicHeadContent($core)
	{
		if (!$core->blog->settings->system->simply_favicon){
			return;
		}
		
		$mimetypes = self::$mimetypes;
		$public_path = path::real(path::fullFromRoot($core->blog->settings->system->public_path, DC_ROOT)) . '/favicon.';
		$public_url = $core->blog->url.$core->url->getBase('simplyFavicon') . '.';
		
		// ico : IE6
		if (file_exists($public_path . 'ico') && '?' != substr($core->blog->url, -1)) {
			echo 
			'<link rel="SHORTCUT ICON" type="image/x-icon" href="' . $public_url . 'ico" />' . "\n";
		}
		// png: apple and others
		if (file_exists($public_path . 'png')) {
			echo 
			'<link rel="apple-touch-icon" href="' . $public_url . 'png" />' . "\n" .
			'<link rel="icon" type="image/png" href="' . $public_url . 'png" />' . "\n";
		}
		// all others
		else {
			foreach($mimetypes as $ext => $mime)
			{
				if (file_exists($public_path . $ext)) {
					echo
					'<link rel="icon" type="' . $mime . '" href="' . $public_url . $ext . '" />' . "\n";
					break;
				}
			}
		}
	}
}