--- loncom/interface/lonfeedback.pm	2017/05/30 00:01:32	1.373
+++ loncom/interface/lonfeedback.pm	2017/11/03 21:36:27	1.374
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Feedback
 #
-# $Id: lonfeedback.pm,v 1.373 2017/05/30 00:01:32 raeburn Exp $
+# $Id: lonfeedback.pm,v 1.374 2017/11/03 21:36:27 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -45,7 +45,7 @@ use HTML::LCParser();
 use Apache::lonspeller();
 use Apache::longroup;
 use Cwd;
-use LONCAPA;
+use LONCAPA qw(:DEFAULT :match);
 
 sub discussion_open {
     my ($status,$symb)=@_;
@@ -696,21 +696,28 @@ END
 
 #Create zip file in prtspool
 
-                    my $imszipfile = '/prtspool/'.
-                    $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
-                         time.'_'.rand(1000000000).'.zip';
-                    my $cwd = &getcwd(); 
-                    my $imszip = '/home/httpd/'.$imszipfile;
-                    chdir $tempexport;
-                    open(OUTPUT, "zip -r $imszip *  2> /dev/null |");
-                    close(OUTPUT);
-                    chdir $cwd;
-                    $discussion .= &mt('Download the zip file from [_1]Discussion Posting Archive[_2]',
+                    if (($env{'user.name'} =~ /^$match_username$/)
+                        && ($env{'user.domain'} =~ /^$match_domain$/)) {
+                        my $now = time(); 
+                        my $imszipfile = '/prtspool/'.
+                                      join('_',$env{'user.name'},$env{'user.domain'},$now).
+                                      '_'.rand(1000000000).'.zip';
+                        my $cwd = &getcwd(); 
+                        my $imszip = '/home/httpd/'.$imszipfile;
+                        chdir $tempexport;
+                        open(OUTPUT, "zip -r $imszip *  2> /dev/null |");
+                        close(OUTPUT);
+                        chdir $cwd;
+                        $discussion .= &mt('Download the zip file from [_1]Discussion Posting Archive[_2]',
                                            '<a href="'.$imszipfile.'">','</a>').'<br />';
-                    if ($copyresult) {
-                        $discussion .= '<span class="LC_error">'.
-                                       &mt('The following errors occurred during export:').
-                                       '</span><br />'.$copyresult;
+                        if ($copyresult) {
+                            $discussion .= '<span class="LC_error">'.
+                                           &mt('The following errors occurred during export:').
+                                           '</span><br />'.$copyresult;
+                        }
+                    } else {
+                        $discussion .= '<p class="LC_error">'.
+                                       &mt('Unfortunately you will not be able to retrieve an archive of the discussion posts at this time, because there was a problem creating the zip file.').'</p>';
                     }
                 }
             } else {