--- loncom/interface/lonfeedback.pm	2017/11/08 00:36:56	1.375
+++ loncom/interface/lonfeedback.pm	2018/04/14 17:52:43	1.379
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Feedback
 #
-# $Id: lonfeedback.pm,v 1.375 2017/11/08 00:36:56 raeburn Exp $
+# $Id: lonfeedback.pm,v 1.379 2018/04/14 17:52:43 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -44,7 +44,7 @@ use HTML::LCParser();
 #use HTML::Tidy::libXML;
 use Apache::lonspeller();
 use Apache::longroup;
-use Cwd;
+use Archive::Zip qw( :ERROR_CODES );
 use LONCAPA qw(:DEFAULT :match);
 
 sub discussion_open {
@@ -674,7 +674,7 @@ END
                                              $newpostsflag,$group,
                                              $prevread,$markondisp,$seehidden);
             $discussion .= "</table></form>\n";
-        } 
+        }
         if ($outputtarget eq 'export') {
             if ($manifestok) {
                 while ($currdepth > 0) {
@@ -698,18 +698,19 @@ END
 
                     if (($env{'user.name'} =~ /^$match_username$/)
                         && ($env{'user.domain'} =~ /^$match_domain$/)) {
-                        my $now = time(); 
+                        my $now = time();
                         my $imszipfile = '/prtspool/'.
                                       join('_',$env{'user.name'},$env{'user.domain'},$now).
                                       '_'.rand(1000000000).'.zip';
-                        my $cwd = &getcwd(); 
+                        my $zip = Archive::Zip->new();
+                        $zip->addTree($tempexport);
                         my $imszip = '/home/httpd/'.$imszipfile;
-                        chdir $tempexport;
-                        open(OUTPUT, "zip -r $imszip *  2> /dev/null |");
-                        close(OUTPUT);
-                        chdir $cwd;
-                        $discussion .= &mt('Download the zip file from [_1]Discussion Posting Archive[_2]',
+                        if ($zip->writeToFileNamed($imszip) == AZ_OK) {
+                            $discussion .= &mt('Download the zip file from [_1]Discussion Posting Archive[_2]',
                                            '<a href="'.$imszipfile.'">','</a>').'<br />';
+                        } else {
+                            $discussion .=  &mt('Failed to create zip file').'<br />';
+                        }
                         if ($copyresult) {
                             $discussion .= '<span class="LC_error">'.
                                            &mt('The following errors occurred during export:').
@@ -2839,6 +2840,10 @@ sub redirect_back {
   my $start_page=
       &Apache::loncommon::start_page('Feedback sent',undef,\%parms);
   my $end_page = &Apache::loncommon::end_page();
+  my $windowname = 'loncapaclient';
+  if ($env{'request.lti.login'}) {
+     $windowname .= 'lti';
+  }
   $r->print(<<ENDREDIR);
 $start_page
 <img align="right" src="$logo" />
@@ -2847,7 +2852,7 @@ $typestyle
 $blog
 $toolarge
 <font color="red">$status</font>
-<form name="reldt" action="$feedurl" target="loncapaclient">
+<form name="reldt" action="$feedurl" target="$windowname">
 $prevtag
 $sorttag
 $statustag
@@ -4046,11 +4051,15 @@ sub handler {
 					  'only_body'   => 1,
 					  'add_entries' => \%onload});
       my $end_page = &Apache::loncommon::end_page();
+      my $windowname = 'loncapaclient';
+      if ($env{'request.lti.login'}) {
+          $windowname .= 'lti';
+      }
       $r->print (<<ENDREDIR);
 $start_page
 <img align="right" src="$logo" />
 $textline
-<form name="reldt" action="$feedurl" target="loncapaclient">
+<form name="reldt" action="$feedurl" target="$windowname">
 </form>
 <br />
 $end_page
@@ -4551,6 +4560,8 @@ ENDREDIR
 	  ($env{'request.course.id'} && ($feedurl!~m:^/adm:))
 	  ||
 	  ($env{'request.course.id'} && ($symb=~/^bulletin\_\_\_/))
+          ||
+          (($env{'request.course.id'} && ($feedurl =~ /ext\.tool$/)))
 	  ) {
 	  &Apache::loncommon::content_type($r,'text/html');
 	  $r->send_http_header;