特定の Response Header の値を環境変数にコピーして Header を削除する機能を mod_headers に追加する patch for Apache 2.4.4

mod_headers-toenv.patch

diff -uNr httpd-2.4.4.orig/modules/metadata/mod_headers.c httpd-2.4.4/modules/metadata/mod_headers.c
--- httpd-2.4.4.orig/modules/metadata/mod_headers.c     2012-12-09 22:20:13.000000000 +0900
+++ httpd-2.4.4/modules/metadata/mod_headers.c  2013-02-27 19:37:08.466361782 +0900
@@ -96,7 +96,8 @@
     hdr_unset = 'u',            /* unset header */
     hdr_echo = 'e',             /* echo headers from request to response */
     hdr_edit = 'r',             /* change value by regexp, match once */
-    hdr_edit_r = 'R'            /* change value by regexp, everymatch */
+    hdr_edit_r = 'R',           /* change value by regexp, everymatch */
+    hdr_toenv = 'E'             /* copy to subprocess_env and unset */
 } hdr_actions;

 /*
@@ -439,6 +440,8 @@
         new->action = hdr_merge;
     else if (!strcasecmp(action, "unset"))
         new->action = hdr_unset;
+    else if (!strcasecmp(action, "toenv"))
+        new->action = hdr_toenv;
     else if (!strcasecmp(action, "echo"))
         new->action = hdr_echo;
     else if (!strcasecmp(action, "edit"))
@@ -447,7 +450,7 @@
         new->action = hdr_edit_r;
     else
         return "first argument must be 'add', 'set', 'append', 'merge', "
-               "'unset', 'echo', 'edit', or 'edit*'.";
+               "'unset', 'toenv', 'echo', 'edit', or 'edit*'.";

     if (new->action == hdr_edit || new->action == hdr_edit_r) {
         if (subs == NULL) {
@@ -758,6 +761,11 @@
         case hdr_unset:
             apr_table_unset(headers, hdr->header);
             break;
+        case hdr_toenv:
+            apr_table_add(r->subprocess_env, process_tags(hdr, r),
+                          apr_table_get(headers, hdr->header));
+            apr_table_unset(headers, hdr->header);
+            break;
         case hdr_echo:
             v.r = r;
             v.hdr = hdr;