Updated example config file

Added better support for WP installs using Apache mod_userdir URLs

mthumb-config.example.php

@@ -6,21 +6,98 @@
  *
  * @created   4/2/14 11:52 AM
  * @author    Mindshare Studios, Inc.
- * @copyright Copyright (c) 2014
- * @link      http://www.mindsharelabs.com/documentation/
+ * @copyright Copyright (c) 2006-2015
+ * @link      http://www.mindsharelabs.com/
  *
  */
 
-// tilde support for mthumb, in default WP install this should result in the same value as ABSPATH
-$_SERVER['DOCUMENT_ROOT'] = realpath(dirname(__FILE__).'/../../../../../');
-//var_dump($_SERVER['DOCUMENT_ROOT']); die;
+// Max sizes
+if(!defined('MAX_WIDTH')) {
+	define('MAX_WIDTH', 3600);
+}
+if(!defined('MAX_HEIGHT')) {
+	define('MAX_HEIGHT', 3600);
+}
+if(!defined('MAX_FILE_SIZE')) {
+	define ('MAX_FILE_SIZE', 20971520); // 20MB
+}
 
+/*
+ *  External Sites
+ */
 global $ALLOWED_SITES;
-
-// External Sites
 $ALLOWED_SITES = array(
+	'flickr.com',
+	'staticflickr.com',
+	'picasa.com',
+	'img.youtube.com',
+	'upload.wikimedia.org',
+	'photobucket.com',
+	'imgur.com',
+	'imageshack.us',
+	'tinypic.com',
 	'mind.sh',
 	'mindsharelabs.com',
 	'mindsharestudios.com'
 );
 
+// The rest of the code in this config only applies to Apache mod_userdir  (URIs like /~username)
+
+if(mthumb_in_url('~')) {
+	$_SERVER['DOCUMENT_ROOT'] = mthumb_find_wp_root();
+}
+
+/**
+ *  We need to set DOCUMENT_ROOT in cases where /~username URLs are being used.
+ *  In a default WordPress install this should result in the same value as ABSPATH
+ *  but ABSPATH and all WP functions are not accessible in the current scope.
+ *
+ *  This code should work in 99% of cases.
+ *
+ * @param int $levels
+ *
+ * @return bool|string
+ */
+function mthumb_find_wp_root($levels = 9) {
+
+	$dir_name = dirname(__FILE__).'/';
+
+	for($i = 0; $i <= $levels; $i++) {
+		$path = realpath($dir_name.str_repeat('../', $i));
+		if(file_exists($path.'/wp-config.php')) {
+			return $path;
+		}
+	}
+
+	return FALSE;
+}
+
+/**
+ *
+ * Gets the current URL.
+ *
+ * @return string
+ */
+function mthumb_get_url() {
+	$s = empty($_SERVER["HTTPS"]) ? '' : ($_SERVER["HTTPS"] == "on") ? "s" : "";
+	$protocol = substr(strtolower($_SERVER["SERVER_PROTOCOL"]), 0, strpos(strtolower($_SERVER["SERVER_PROTOCOL"]), "/")).$s;
+	$port = ($_SERVER["SERVER_PORT"] == "80") ? "" : (":".$_SERVER["SERVER_PORT"]);
+
+	return $protocol."://".$_SERVER['SERVER_NAME'].$port.$_SERVER['REQUEST_URI'];
+}
+
+/**
+ *
+ * Checks to see if $text is in the current URL.
+ *
+ * @param $text
+ *
+ * @return bool
+ */
+function mthumb_in_url($text) {
+	if(stristr(mthumb_get_url(), $text)) {
+		return TRUE;
+	} else {
+		return FALSE;
+	}
+}