--- rat/lonpageflip.pm	2018/12/27 20:11:16	1.99
+++ rat/lonpageflip.pm	2021/04/29 17:45:25	1.103
@@ -2,7 +2,7 @@
 #
 # Page flip handler
 #
-# $Id: lonpageflip.pm,v 1.99 2018/12/27 20:11:16 raeburn Exp $
+# $Id: lonpageflip.pm,v 1.103 2021/04/29 17:45:25 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -304,7 +304,7 @@ sub first_answerable_ressymb {
 }
 
 sub check_http_req {
-    my ($srcref) = @_;
+    my ($srcref,$hostname) = @_;
     return unless (ref($srcref) eq 'SCALAR');
     my $usehttp;
     if ($env{'request.course.id'}) {
@@ -313,14 +313,17 @@ sub check_http_req {
         if (($$srcref =~ m{^\Q/public/$cdom/$cnum/syllabus\E($|\?)}) &&
             ($ENV{'SERVER_PORT'} == 443) &&
             ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://})) {
-            unless (&Apache::lonnet::uses_sts()) {
+            unless ((&Apache::lonnet::uses_sts()) ||
+                    (&Apache::lonnet::waf_allssl($hostname))) {
                 $$srcref .= (($$srcref =~/\?/)? '&':'?') . 'usehttp=1';
                 $usehttp = 1;
             }
         } elsif (($$srcref =~ m{^\Q/adm/wrapper/ext/\E(?!https:)}) &&
                  ($ENV{'SERVER_PORT'} == 443)) {
-            unless (&Apache::lonnet::uses_sts()) {
-                $$srcref .= (($$srcref =~/\?/)? '&':'?') . 'usehttp=1';
+            unless ((&Apache::lonnet::uses_sts()) ||
+                    (&Apache::lonnet::waf_allssl($hostname))) {
+                my ($url,$anchor) = ($$srcref =~ /^([^\#]+)(?:|(\#[^\#]+))$/);
+                $$srcref = $url . (($$srcref =~/\?/)? '&':'?') . 'usehttp=1' .$anchor; 
                 $usehttp = 1;
             }
         }
@@ -389,7 +392,7 @@ sub handler {
           }
       } elsif ($direction eq 'firstanswerable') {
           my $furl = &first_answerable_ressymb();
-          my $usehttp = &check_http_req(\$furl);
+          my $usehttp = &check_http_req(\$furl,$hostname);
           if (($usehttp) && ($hostname ne '')) {
               $furl='http://'.$hostname.$furl;
           } else {
@@ -430,12 +433,12 @@ sub handler {
               my $preamble = '<div id="LC_update_'.$env{'request.course.id'}.'" class="LC_info">'.
                              '<br />'.
                              &mt('Your course session is being updated because of recent changes by course personnel.').
-                             ' '.&mt('Please be patient.').'<br /></div>'.
+                             ' '.&mt('Please be patient').'.<br /></div>'.
                              '<div style="padding:0;clear:both;margin:0;border:0"></div>';
               %prog_state = &Apache::lonhtmlcommon::Create_PrgWin($r,undef,$preamble);
               &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Updating course'));
               my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum");
-              &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Finished'));
+              &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,&mt('Finished!'));
               if ($ferr) {
                   &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
                   my $requrl = $r->uri;
@@ -454,7 +457,7 @@ sub handler {
       }
       if ($direction eq 'firstres') {
 	  my $furl=&first_accessible_resource();
-          my $usehttp = &check_http_req(\$furl);
+          my $usehttp = &check_http_req(\$furl,$hostname);
           if (($usehttp) && ($hostname ne '')) {
               $furl='http://'.$hostname.$furl;
           } else {
@@ -471,7 +474,7 @@ sub handler {
 	      return REDIRECT;
           }
       }
-      if ($direction eq 'return') { 
+      if ($direction eq 'return') {
 # -------------------------------------------------------- Return to last known
          my ($newloc,$usehttp);
          if (($last) && (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'.db',
@@ -480,11 +483,15 @@ sub handler {
 	    $id=$hash{'map_pc_'.&Apache::lonnet::clutter($murl)}.'.'.$id;
 	    $newloc=$hash{'src_'.$id};
 	    if ($newloc) {
-                $usehttp = &check_http_req(\$newloc);
+                $usehttp = &check_http_req(\$newloc,$hostname);
 		if ($hash{'encrypted_'.$id}) { 
                     $newloc=&Apache::lonenc::encrypted($newloc);
-                } elsif ($newloc =~ m{^(/adm/wrapper/ext/[^\#]+)\#([^\#]+)$}) {
-                    $newloc = $1.&escape('#').$2;
+                }
+                if ($newloc =~ m{^(/adm/wrapper/ext/[^\#]+)(?:|(\#[^\#]+))$}) {
+                    my ($url,$anchor) = ($1,$2);
+                    if ($anchor) {
+                        $newloc = $url.(($url=~/\?/)?'&':'?').'symb='.&escape($last).$anchor;
+                    }
                 }
 	    } else {
 		$newloc='/adm/navmaps';
@@ -520,7 +527,6 @@ sub handler {
              $last=$hash{'last_known'};
              untie(%hash);
          }
-         my $newloc;
          if ($last) {
 	     $currenturl=&Apache::lonnet::clutter((&Apache::lonnet::decode_symb($last))[2]);
 	 } else {
@@ -619,7 +625,7 @@ sub handler {
 # ------------------------------------- Check for and display critical messages
                   my ($redirect, $url) = &Apache::loncommon::critical_redirect(300,'flip');
                   unless ($redirect) {
-                      my $usehttp = &check_http_req(\$redirecturl);
+                      my $usehttp = &check_http_req(\$redirecturl,$hostname);
                       if (($usehttp) && ($hostname ne '')) {
                           $url='http://'.$hostname.$redirecturl;
                       } else {
@@ -686,7 +692,7 @@ $lt{'pick'}:
 ENDSTART
                      foreach my $id (@possibilities) {
                         my $src = $multichoicehash{'src_'.$id};
-                        my $usehttp = &check_http_req(\$src);
+                        my $usehttp = &check_http_req(\$src,$hostname);
                         if (($usehttp) && ($hostname ne '')) {
                             $src = 'http://'.$hostname.$src;
                         }
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>500 Internal Server Error</title>
</head><body>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error or
misconfiguration and was unable to complete
your request.</p>
<p>Please contact the server administrator at 
 root@localhost to inform them of the time this error occurred,
 and the actions you performed just before this error.</p>
<p>More information about this error may be available
in the server error log.</p>
</body></html>