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Posted to cvs@httpd.apache.org by ni...@apache.org on 2010/02/20 02:54:15 UTC

svn commit: r912063 - in /httpd/httpd/trunk: CHANGES modules/proxy/mod_proxy_http.c

Author: niq
Date: Sat Feb 20 01:54:15 2010
New Revision: 912063

URL: http://svn.apache.org/viewvc?rev=912063&view=rev
Log:
mod_proxy_http: get the headers right in a HEAD request with ProxyErrorOverride.PR 41646
Analysis by Stuart Children; patch by niq

Modified:
    httpd/httpd/trunk/CHANGES
    httpd/httpd/trunk/modules/proxy/mod_proxy_http.c

Modified: httpd/httpd/trunk/CHANGES
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?rev=912063&r1=912062&r2=912063&view=diff
==============================================================================
--- httpd/httpd/trunk/CHANGES [utf-8] (original)
+++ httpd/httpd/trunk/CHANGES [utf-8] Sat Feb 20 01:54:15 2010
@@ -2,6 +2,12 @@
 
 Changes with Apache 2.3.7
 
+  *) Proxy: get the headers right in a HEAD request with
+     ProxyErrorOverride, by checking for an overridden error
+     before not after going into a catch-all code path.
+     PR 41646.
+     Patch by Nick Kew, based on detailed analysis by Stuart Children.
+
   *) support/rotatelogs: Support the simplest log rotation case, log
      truncation. Useful when the log is being processed in real time
      using a command like tail. [Graham Leggett]

Modified: httpd/httpd/trunk/modules/proxy/mod_proxy_http.c
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.c?rev=912063&r1=912062&r2=912063&view=diff
==============================================================================
--- httpd/httpd/trunk/modules/proxy/mod_proxy_http.c (original)
+++ httpd/httpd/trunk/modules/proxy/mod_proxy_http.c Sat Feb 20 01:54:15 2010
@@ -1704,6 +1704,21 @@
             e = apr_bucket_heap_create(buffer, cntr, NULL, c->bucket_alloc);
             APR_BRIGADE_INSERT_TAIL(bb, e);
         }
+        /* PR 41646: get HEAD right with ProxyErrorOverride */
+        if (ap_is_HTTP_ERROR(r->status) && conf->error_override) {
+            /* clear r->status for override error, otherwise ErrorDocument
+             * thinks that this is a recursive error, and doesn't find the
+             * custom error page
+             */
+            r->status = HTTP_OK;
+            /* Discard body, if one is expected */
+            if (!r->header_only && /* not HEAD request */
+                (proxy_status != HTTP_NO_CONTENT) && /* not 204 */
+                (proxy_status != HTTP_NOT_MODIFIED)) { /* not 304 */
+                ap_discard_request_body(rp);
+            }
+            return proxy_status;
+        }
 
         /* send body - but only if a body is expected */
         if ((!r->header_only) &&                   /* not HEAD request */
@@ -1865,29 +1880,7 @@
         return DONE;
     }
 
-    if (conf->error_override) {
-        /* the code above this checks for 'OK' which is what the hook expects */
-        if (!ap_is_HTTP_ERROR(proxy_status)) {
-            return OK;
-        }
-        else {
-            /* clear r->status for override error, otherwise ErrorDocument
-             * thinks that this is a recursive error, and doesn't find the
-             * custom error page
-             */
-            r->status = HTTP_OK;
-            /* Discard body, if one is expected */
-            if (!r->header_only && /* not HEAD request */
-                (proxy_status != HTTP_NO_CONTENT) && /* not 204 */
-                (proxy_status != HTTP_NOT_MODIFIED)) { /* not 304 */
-                ap_discard_request_body(rp);
-            }
-            return proxy_status;
-        }
-    }
-    else {
-        return OK;
-    }
+    return OK;
 }
 
 static



Re: svn commit: r912063 - in /httpd/httpd/trunk: CHANGES modules/proxy/mod_proxy_http.c

Posted by Ruediger Pluem <rp...@apache.org>.
On 20.02.2010 02:54, niq@apache.org wrote:
> Author: niq
> Date: Sat Feb 20 01:54:15 2010
> New Revision: 912063
> 
> URL: http://svn.apache.org/viewvc?rev=912063&view=rev
> Log:
> mod_proxy_http: get the headers right in a HEAD request with ProxyErrorOverride.PR 41646
> Analysis by Stuart Children; patch by niq
> 
> Modified:
>     httpd/httpd/trunk/CHANGES
>     httpd/httpd/trunk/modules/proxy/mod_proxy_http.c
> 
> Modified: httpd/httpd/trunk/CHANGES
> URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/CHANGES?rev=912063&r1=912062&r2=912063&view=diff
> ==============================================================================
> --- httpd/httpd/trunk/CHANGES [utf-8] (original)
> +++ httpd/httpd/trunk/CHANGES [utf-8] Sat Feb 20 01:54:15 2010
> @@ -2,6 +2,12 @@
>  
>  Changes with Apache 2.3.7
>  
> +  *) Proxy: get the headers right in a HEAD request with
> +     ProxyErrorOverride, by checking for an overridden error
> +     before not after going into a catch-all code path.
> +     PR 41646.
> +     Patch by Nick Kew, based on detailed analysis by Stuart Children.
> +
>    *) support/rotatelogs: Support the simplest log rotation case, log
>       truncation. Useful when the log is being processed in real time
>       using a command like tail. [Graham Leggett]

We are handling a lot more conf->error_override in the code that is now not used
any longer. So I am a litte worried that we now miss some cases.
Isn't below the better patch?

Index: mod_proxy_http.c
===================================================================
--- mod_proxy_http.c    (Revision 911511)
+++ mod_proxy_http.c    (Arbeitskopie)
@@ -1839,13 +1839,15 @@
             ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
                          "proxy: header only");

-            /* Pass EOS bucket down the filter chain. */
-            e = apr_bucket_eos_create(c->bucket_alloc);
-            APR_BRIGADE_INSERT_TAIL(bb, e);
-            if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS
-                || c->aborted) {
-                /* Ack! Phbtt! Die! User aborted! */
-                backend->close = 1;  /* this causes socket close below */
+            if (!conf->error_override) {
+                /* Pass EOS bucket down the filter chain. */
+                e = apr_bucket_eos_create(c->bucket_alloc);
+                APR_BRIGADE_INSERT_TAIL(bb, e);
+                if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS
+                    || c->aborted) {
+                    /* Ack! Phbtt! Die! User aborted! */
+                    backend->close = 1;  /* this causes socket close below */
+                }
             }

             apr_brigade_cleanup(bb);


Regards

RĂ¼diger