--- httpd-2.4.2/modules/aaa/mod_authz_dbm.c.orig	2011-12-05 00:08:01.000000000 +0000
+++ httpd-2.4.2/modules/aaa/mod_authz_dbm.c	2012-07-31 12:28:33.724190818 +0100
@@ -33,6 +33,7 @@
 typedef struct {
     const char *grpfile;
     const char *dbmtype;
+    int case_insensitive;
 } authz_dbm_config_rec;
 
 APR_DECLARE_OPTIONAL_FN(char*, authz_owner_get_file_group, (request_rec *r));
@@ -65,6 +66,7 @@
 
     conf->grpfile = NULL;
     conf->dbmtype = "default";
+    conf->case_insensitive = 0;  /* case sensitive by default */
 
     return conf;
 }
@@ -77,6 +79,10 @@
     AP_INIT_TAKE1("AuthzDBMType", ap_set_string_slot,
      (void *)APR_OFFSETOF(authz_dbm_config_rec, dbmtype),
      OR_AUTHCFG, "what type of DBM file the group file is"),
+    AP_INIT_FLAG("AuthzDBMCaseInsensitive", ap_set_flag_slot,
+     (void *)APR_OFFSETOF(authz_dbm_config_rec, case_insensitive),
+     OR_AUTHCFG, "Set to 'On' to force tests groupnames"
+    "made by this module to be case insensitive (default is Off.)"),
     {NULL}
 };
 
@@ -188,6 +194,9 @@
             if (!strcmp(v, w)) {
                 return AUTHZ_GRANTED;
             }
+            if (conf->case_insensitive && !strcasecmp(v, w)) {
+                return AUTHZ_GRANTED;
+            }
         }
     }
 
@@ -256,6 +265,9 @@
             if (!strcmp(v, filegroup)) {
                 return AUTHZ_GRANTED;
             }
+            if (conf->case_insensitive && !strcasecmp(v, filegroup)) {
+                return AUTHZ_GRANTED;
+            }
         }
     }