--- loncom/auth/lonacc.pm	2022/08/24 20:58:50	1.206
+++ loncom/auth/lonacc.pm	2023/08/28 20:40:00	1.210
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.206 2022/08/24 20:58:50 raeburn Exp $
+# $Id: lonacc.pm,v 1.210 2023/08/28 20:40:00 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -333,7 +333,8 @@ sub sso_login {
         }
     }
 
-    my ($linkprot,$linkprotuser,$linkprotexit,$linkkey,$deeplinkurl);
+    my ($linkprot,$linkprotuser,$linkprotexit,$linkkey,$deeplinkurl,
+        $linkprotpbid,$linkprotpburl);
 
 #
 # If Shibboleth auth is in use, and a dual SSO and non-SSO login page
@@ -373,6 +374,8 @@ sub sso_login {
             $linkprot = $info{'linkprot'};
             $linkprotuser = $info{'linkprotuser'};
             $linkprotexit = $info{'linkprotexit'};
+            $linkprotpbid = $info{'linkprotpbid'};
+            $linkprotpburl = $info{'linkprotpburl'};
         } elsif ($info{'linkkey'} ne '') {
             $linkkey = $info{'linkkey'};
         }
@@ -394,11 +397,15 @@ sub sso_login {
             if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
                 $form{'origurl'} = $firsturl;
                 $deeplinkurl = $firsturl;
+            } elsif ($firsturl eq '/adm/email') {
+                $form{'origurl'} = $firsturl;
             }
             if ($form{'linkprot'}) {
                 $linkprot = $form{'linkprot'};
                 $linkprotuser = $form{'linkprotuser'};
                 $linkprotexit = $form{'linkprotexit'};
+                $linkprotpbid = $form{'linkprotpbid'};
+                $linkprotpburl = $form{'linkprotpburl'};
             } elsif ($form{'linkkey'} ne '') {
                 $linkkey = $form{'linkkey'};
             }
@@ -428,6 +435,8 @@ sub sso_login {
                 $linkprot = $form{'linkprot'};
                 $linkprotuser = $form{'linkprotuser'};
                 $linkprotexit = $form{'linkprotexit'};
+                $linkprotpbid = $form{'linkprotpbid'};
+                $linkprotpburl = $form{'linkprotpburl'};
             } elsif ($form{'linkkey'} ne '') {
                 $linkkey = $form{'linkkey'};
             }
@@ -442,6 +451,12 @@ sub sso_login {
             if ($link_info{'linkprotexit'} ne '') {
                 $linkprotexit = $link_info{'linkprotexit'};
             }
+            if ($link_info{'linkprotpbid'} ne '') {
+                $linkprotpbid = $link_info{'linkprotpbid'};
+            }
+            if ($link_info{'linkprotpburl'} ne '') {
+                $linkprotpburl = $link_info{'linkprotpburl'};
+            }
         }
         my $delete = &Apache::lonnet::tmpdel($form{'ltoken'});
         delete($form{'ltoken'});
@@ -464,6 +479,8 @@ sub sso_login {
                            linkprot => $linkprot,
                            linkprotuser => $linkprotuser,
                            linkprotexit => $linkprotexit,
+                           linkprotpbid => $linkprotpbid,
+                           linkprotpburl => $linkprotpburl,
                        );
             if ($env{'form.lcssowin'}) {
                 $data{'lcssowin'} = $env{'form.lcssowin'};
@@ -536,10 +553,22 @@ sub sso_login {
                     if ($linkprotexit ne '') {
                         $env{'request.linkprotexit'} = $linkprotexit;
                     }
+                    if ($linkprotpbid ne '') {
+                        $env{'request.linkprotpbid'} = $linkprotpbid;
+                    }
+                    if ($linkprotpburl ne '') {
+                        $env{'request.linkprotpburl'} = $linkprotpburl;
+                    }
                 } elsif ($linkkey ne '') {
                     $env{'request.linkkey'} = $linkkey;
                 }
             }
+            if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) {
+                if ($form{'display'} && ($env{'form.mailrecip'} eq $user.':'.$domain)) {
+                    $env{'request.display'} = $form{'display'};
+                    $env{'request.mailrecip'} = $env{'form.mailrecip'};
+                }
+            }
             $env{'request.sso.login'} = 1;
             if (defined($r->dir_config("lonSSOReloginServer"))) {
                 $env{'request.sso.reloginserver'} =
@@ -590,10 +619,22 @@ sub sso_login {
                     if ($linkprotexit ne '') {
                         $info{'linkprotexit'} = $linkprotexit;
                     }
+                    if ($linkprotpbid ne '') {
+                        $info{'linkprotpbid'} = $linkprotpbid;
+                    }
+                    if ($linkprotpburl ne '') {
+                        $info{'linkprotpburl'} = $linkprotpburl;
+                    }
                 } elsif ($linkkey ne '') {
                     $info{'linkkey'} = $linkkey;
                 }
             }
+            if (($r->uri eq '/adm/sso') && ($form{'origurl'} eq '/adm/email')) {
+                if ($form{'display'} && ($form{'mailrecip'} eq $user.':'.$domain)) {
+                    $info{'display'} = &escape($form{'display'});
+                    $info{'mailrecip'} = &escape($form{'mailrecip'});
+                }
+            }
             if ($r->dir_config("ssodirecturl") == 1) {
                 $info{'origurl'} = $r->uri;
             }
@@ -810,6 +851,8 @@ sub handler {
                                 linkprot => $info{'linkprot'},
                                 linkprotuser => $info{'linkprotuser'},
                                 linkprotexit => $info{'linkprotexit'},
+                                linkprotpbid => $info{'linkprotpbid'},
+                                linkprotpburl => $info{'linkprotpburl'},
                             );
                         } elsif ($info{'ltoken'} ne '') {
                             my %ltoken_info = &Apache::lonnet::tmpget($info{'ltoken'});
@@ -820,6 +863,8 @@ sub handler {
                                     linkprot => $ltoken_info{'linkprot'},
                                     linkprotuser => $ltoken_info{'linkprotuser'},
                                     linkprotexit => $ltoken_info{'linkprotexit'},
+                                    linkprotpbid => $ltoken_info{'linkprotpbid'},
+                                    linkprotpburl => $ltoken_info{'linkprotpburl'},
                                 );
                             }
                         }
@@ -846,6 +891,17 @@ sub handler {
                 return FORBIDDEN;
             }
             return OK;
+        } elsif (($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;
@@ -919,18 +975,25 @@ 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;
+                                }
                             }
                         }
                     }
                 }
                 my $clientip = &Apache::lonnet::get_requestor_ip($r);
                 $access=&Apache::lonnet::allowed('bre',$requrl,'','',$clientip,'','',$nodeeplinkcheck);
+                if (($requrl =~ m{^/daxeopen/priv/}) && ($access eq '')) {
+                    $env{'request.editurl'}=$requrl;
+                }
             }
         }
         if ($check_block) {