--- loncom/auth/lonacc.pm	2023/06/02 01:20:26	1.208
+++ loncom/auth/lonacc.pm	2023/08/28 18:58:45	1.209
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.208 2023/06/02 01:20:26 raeburn Exp $
+# $Id: lonacc.pm,v 1.209 2023/08/28 18:58:45 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -891,6 +891,17 @@ sub handler {
                 return FORBIDDEN;
             }
             return OK;
+        } elsif (($env{'request.course.id'}) &&
+                 (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
+                 ($requrl=~m{^(/daxeopen|)(/uploaded/$cdom/$cnum/(?:docs|supplemental)/(?:default|\d+)/\d+/)([^/]+|)$})) {
+            my ($daxe,$path,$file) = ($1,$2,$3);
+            my $referrer;
+            unless ($daxe) {
+                $referrer = $r->headers_in->{'Referer'};
+            }
+            if (($daxe) || ($referrer =~ m{\Qfile=/daxeopen$path\E})) {
+                return OK;
+            }
         }
 # ---------------------------------------------------------------- Check access
 	my $now = time;
@@ -964,12 +975,16 @@ sub handler {
                 }
             } else {
                 my $nodeeplinkcheck;
-                if (($check_access) && ($requrl =~ /\.(sequence|page)$/)) {
-                    unless ($env{'form.navmap'}) {
-                        if ($r->args ne '') {
-                            &Apache::loncommon::get_unprocessed_cgi($r->args,['navmap']);
-                            unless ($env{'form.navmap'}) {
-                                $nodeeplinkcheck = 1;
+                if ($check_access) {
+                    if ($requrl =~ m{^/daxeopen/priv/}) {  
+                        $nodeeplinkcheck = 1;
+                    } elsif ($requrl =~ /\.(sequence|page)$/) {
+                        unless ($env{'form.navmap'}) {
+                            if ($r->args ne '') {
+                                &Apache::loncommon::get_unprocessed_cgi($r->args,['navmap']);
+                                unless ($env{'form.navmap'}) {
+                                    $nodeeplinkcheck = 1;
+                                }
                             }
                         }
                     }