From 42ba05de5fa9413ce0f383cfdafa7288e291ab17 Mon Sep 17 00:00:00 2001
From: Evan Prodromou <evan@status.net>
Date: Wed, 23 Sep 2009 09:33:40 -0400
Subject: [PATCH] revert output buffering (costly) for ETags (low priority)

---
 index.php      |  2 +-
 lib/action.php | 41 +++++------------------------------------
 2 files changed, 6 insertions(+), 37 deletions(-)

diff --git a/index.php b/index.php
index fa94f0c75e..362ab3cd37 100644
--- a/index.php
+++ b/index.php
@@ -233,7 +233,7 @@ function main()
 
         try {
             if ($action_obj->prepare($args)) {
-                $action_obj->handleWrapper($args);
+                $action_obj->handle($args);
             }
         } catch (ClientException $cex) {
             $cac = new ClientErrorAction($cex->getMessage(), $cex->getCode());
diff --git a/lib/action.php b/lib/action.php
index ebef4f9e43..670eb498c1 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -873,29 +873,28 @@ class Action extends HTMLOutputter // lawsuit
     }
 
     /**
-     * Wrapper for the handle method that handles etags, last-modified, and other conditional headers
+     * Handler method
      *
      * @param array $argarray is ignored since it's now passed in in prepare()
      *
      * @return boolean is read only action?
      */
-    function handleWrapper($argarray=null)
+    function handle($argarray=null)
     {
-        header('Vary: Accept-Encoding,Cookie,Accept-Language,Authorization');
-        header("Cache-Control: must-revalidate");
+        header('Vary: Accept-Encoding,Cookie');
         $lm   = $this->lastModified();
         $etag = $this->etag();
         if ($etag) {
             header('ETag: ' . $etag);
         }
-        $if_none_match = (array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER)) ?
-          $_SERVER['HTTP_IF_NONE_MATCH'] : null;
         if ($lm) {
             header('Last-Modified: ' . date(DATE_RFC1123, $lm));
             if (array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER)) {
                 $if_modified_since = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
                 $ims = strtotime($if_modified_since);
                 if ($lm <= $ims) {
+                    $if_none_match = (array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER)) ?
+                      $_SERVER['HTTP_IF_NONE_MATCH'] : null;
                     if (!$if_none_match ||
                         !$etag ||
                         $this->_hasEtag($etag, $if_none_match)) {
@@ -906,36 +905,6 @@ class Action extends HTMLOutputter // lawsuit
                 }
             }
         }
-        if($etag) {
-            $ret = $this->handle($argarray);
-        }else{
-            ob_start();
-            $ret = $this->handle($argarray);
-            $output = ob_get_contents();
-            ob_end_clean();
-            //deep etag
-            $etag = md5($output);
-            header('ETag: ' . $etag);
-            if($if_none_match && $this->_hasEtag($etag, $if_none_match)) {
-                header('HTTP/1.1 304 Not Modified');
-                // Better way to do this?
-                exit(0);
-            }
-            header('Content-Length: '.strlen($output));
-            print $output;
-        }
-        return $ret;
-    }
-
-    /**
-     * Handler method
-     *
-     * @param array $argarray is ignored since it's now passed in in prepare()
-     *
-     * @return boolean is read only action?
-     */
-    function handle($argarray=null)
-    {
     }
 
     /**