X-Git-Url: https://jasonwoof.com/gitweb/?p=wfpl.git;a=blobdiff_plain;f=http.php;h=2907410ffe4b703e321e7af4573f4be2c9a8884e;hp=b82e3d1dff7f44a705645552767510a3bef7198a;hb=HEAD;hpb=856f805c6cbb6e712c662214f3b5821442f808a0

diff --git a/http.php b/http.php
index b82e3d1..2907410 100644
--- a/http.php
+++ b/http.php
@@ -1,24 +1,14 @@
 <?php
 
-#  Copyright (C) 2005 Jason Woofenden
-#
-#  This program 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.
-#  
-#  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+# This program is in the public domain within the United States. Additionally,
+# we waive copyright and related rights in the work worldwide through the CC0
+# 1.0 Universal public domain dedication, which can be found at
+# http://creativecommons.org/publicdomain/zero/1.0/
 
 
 # return our best guess at the url used to access this page, without the path or query string
 function this_url_sans_path() {
-	if(strtolower($_SERVER['HTTPS']) == 'on' || strtolower($_SERVER['HTTPS']) == 'yes') {
+	if (isset($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS']) == 'on' || strtolower($_SERVER['HTTPS']) == 'yes')) {
 		$url = 'https';
 		$expected_port = 443;
 	} else {
@@ -78,11 +68,14 @@ function redirect($url, $status = '302 Moved Temporarily', $message = '') {
 		if(substr($url, 0, 1) == '/') {
 			$url = this_url_sans_path() . $url;
 		} else {
-			$url = ereg_replace('/[^/]*$', "/$url", this_url());
+			$url = preg_replace('|/[^/]*$|', "/$url", this_url());
 		}
 	}
 			
 	if(function_exists('session_save_messages')) {
+		if(function_exists('atexit_now')) {
+			atexit_now();
+		}
 		session_save_messages();
 	}
 
@@ -92,4 +85,9 @@ function redirect($url, $status = '302 Moved Temporarily', $message = '') {
 	exit();
 }
 
-?>
+# output http headers to allow caching of this page forever
+function http_cache_forever($cache_control = 'public') {
+	header('Last-Modified: '.gmdate('D, d M Y H:i:s', 5025) . ' GMT'); # long time ago
+	header("Cache-Control: $cache_control");
+	header('Expires: ' . gmdate('D, d M Y H:i:s',time()+31536000) . ' GMT'); # rfc 2616 says not to go more than a year in the future
+}