added license.txt, distributed upload/dl support

lib/util.php

@@ -0,0 +1,98 @@
+<?php
+/*
+    Copyright 2009 Pieter Iserbyt
+
+    This file is part of Pamela.
+
+    Pamela is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Pamela is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Pamela.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Converts value to int if it is numeric, else returns default */
+function intvaldef($value, $default) {
+	if (is_numeric($value)) return intval($value);
+	return $default;
+}
+
+/* Checks if a $_GET param is set and returns it or NULL if it's not set */
+function getQuery($name, $default = NULL) {
+	if (!querySet($name)) return $default;
+	return unescape_gpc($_GET[$name]);
+}
+
+/* Returns TRUE if a $_GET param is set */
+function querySet($name) {
+	return isset($_GET[$name]);
+}
+
+/* Checks if a $_POST param is set and returns it or NULL if it's not set */
+function getPost($name, $default = NULL) {
+	if (!postSet($name)) return $default;
+	return unescape_gpc($_POST[$name]);
+}
+
+function unescape_gpc_array($a) {
+  $result = array();
+  foreach ($a as $key => $value) {
+    $result[$key] = unescape_gpc($value);
+  }
+  return $result;
+}
+
+/* Returns TRUE if a $_POST param is set */
+function postSet($name) {
+	return isset($_POST[$name]);
+}
+
+/* array_map_function used to recursively stripslashes by unescape_gpc */
+function stripslashes_deep($value) { 
+	return is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); 
+}
+
+/* Unescapes get/post/cookie vars/arrays if magic_quotes_gpc is turned on */
+function unescape_gpc($gpc) {
+	if (get_magic_quotes_gpc()) {
+		//unescape recursively if needed		
+		$gpc = is_array($gpc) ? array_map('stripslashes_deep', $gpc) : stripslashes($gpc);
+	}
+	return $gpc; 
+}
+
+/*
+stripos implementation for php4 (by "heavyraptor")
+http://be.php.net/manual/en/function.stripos.php#63370
+*/
+if (!function_exists("stripos")) {
+  function stripos($str,$needle) {
+   return strpos(strtolower($str),strtolower($needle));
+  }
+}
+
+/* Redirects to sender */
+function redirectToSender() {
+        $url = $_SERVER["HTTP_REFERER"];
+        header("Location: $url");  
+}
+
+/* Returns the name of current page */
+function currentPage() {
+  return basename($_SERVER['PHP_SELF']);
+}
+
+/** outputs include for script in head */
+function script($source) {
+?>
+  <script type="text/javascript" src="<?=$source?>"></script>
+<?php
+}
+?>