commit c29123244e546986ff3c9e6fe94772c4411adf2b
Author: Olav Morken <olav.morken@uninett.no>
Date:   Wed Aug 16 17:28:16 2017 +0200

    Make MellonUser case-insensitive.
    
    MellonUser used to perform its attribute match in a case-sesnsitive
    manner, while environment variables are stored in a case-insensitive
    table in Apache.
    
    The result is a bit of inconsistency between the way mod_auth_mellon
    handles the attribute names and the way they are accessed other places
    in Apache.
    
    This patch changes the code to use a case-insensitive match when
    processing the MellonUser directive.
    
    Fixes issue #131.

diff --git a/auth_mellon_cache.c b/auth_mellon_cache.c
index cd3b9b0..7d51589 100644
--- a/auth_mellon_cache.c
+++ b/auth_mellon_cache.c
@@ -552,7 +552,7 @@ void am_cache_env_populate(request_rec *r, am_cache_entry_t *t)
     if (am_cache_entry_slot_is_empty(&t->user)) {
         for(i = 0; i < t->size; ++i) {
             varname = am_cache_entry_get_string(t, &t->env[i].varname);
-            if (strcmp(varname, d->userattr) == 0) {
+            if (strcasecmp(varname, d->userattr) == 0) {
                 value = am_cache_entry_get_string(t, &t->env[i].value);
                 status = am_cache_entry_store_string(t, &t->user, value);
                 if (status != 0) {
@@ -592,7 +592,7 @@ void am_cache_env_populate(request_rec *r, am_cache_entry_t *t)
          * If we find a variable remapping to MellonUser, use it.
          */
         if (am_cache_entry_slot_is_empty(&t->user) &&
-            (strcmp(varname, d->userattr) == 0)) {
+            (strcasecmp(varname, d->userattr) == 0)) {
             status = am_cache_entry_store_string(t, &t->user, value);
             if (status != 0) {
                 ap_log_rerror(APLOG_MARK, APLOG_NOTICE, 0, r,