From: Ruediger Pluem <rpluem@apache.org>
Date: Mon, 3 Sep 2007 10:05:16 +0000 (+0000)
Subject: Merge r483633 from trunk:
X-Git-Tag: 2.2.6~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8f3efee97d10c0453b00e91c239af6d4c1de81a;p=thirdparty%2Fapache%2Fhttpd.git

Merge r483633 from trunk:

* Do not replace a Date header set by a proxied backend server.

PR: 40232

Submitted by: rpluem
Reviewed by: rpluem, jim, niq


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@572272 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/CHANGES b/CHANGES
index bb3ce4bf132..fa875848cb1 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,9 @@
                                                         -*- coding: utf-8 -*-
 Changes with Apache 2.2.6
 
+  *) core: Do not replace a Date header set by a proxied backend server.
+     PR 40232. [Ruediger Pluem]
+
   *) mod_proxy: Add a missing assignment in an error checking code path.
      PR 40865. [Andrew Rucker Jones <arjones simultan.dyndns.org>]
 
diff --git a/STATUS b/STATUS
index 43e004b467e..1eb9a4fb935 100644
--- a/STATUS
+++ b/STATUS
@@ -79,13 +79,6 @@ RELEASE SHOWSTOPPERS:
 PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
   [ start all new proposals below, under PATCHES PROPOSED. ]
 
-    * core: Do not replace a Date header set by a proxied backend server.
-      PR 40232.
-      Trunk version of patch:
-         http://svn.apache.org/viewcvs.cgi?rev=483633&view=rev
-      Backport version for 2.2.x of patch:
-         Trunk version of patch works
-      +1: rpluem, jim, niq
 
 PATCHES PROPOSED TO BACKPORT FROM TRUNK:
 
diff --git a/modules/http/http_filters.c b/modules/http/http_filters.c
index 6df4edf627b..185f50f83d0 100644
--- a/modules/http/http_filters.c
+++ b/modules/http/http_filters.c
@@ -721,22 +721,37 @@ static void basic_http_header(request_rec *r, apr_bucket_brigade *bb,
     apr_brigade_writev(bb, NULL, NULL, vec, 4);
 #endif
 
-    date = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
-    ap_recent_rfc822_date(date, r->request_time);
-
     h.pool = r->pool;
     h.bb = bb;
-    form_header_field(&h, "Date", date);
 
-    /* keep the set-by-proxy server header, otherwise
-     * generate a new server header */
+    /*
+     * keep the set-by-proxy server and date headers, otherwise
+     * generate a new server header / date header
+     */
     if (r->proxyreq != PROXYREQ_NONE) {
+        const char *proxy_date;
+
+        proxy_date = apr_table_get(r->headers_out, "Date");
+        if (!proxy_date) {
+            /*
+             * proxy_date needs to be const. So use date for the creation of
+             * our own Date header and pass it over to proxy_date later to
+             * avoid a compiler warning.
+             */
+            date = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
+            ap_recent_rfc822_date(date, r->request_time);
+            proxy_date = date;
+        }
+        form_header_field(&h, "Date", proxy_date);
         server = apr_table_get(r->headers_out, "Server");
         if (server) {
             form_header_field(&h, "Server", server);
         }
     }
     else {
+        date = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
+        ap_recent_rfc822_date(date, r->request_time);
+        form_header_field(&h, "Date", date);
         form_header_field(&h, "Server", ap_get_server_banner());
     }