--- loncom/interface/lonfeedback.pm	2015/09/30 21:04:04	1.371
+++ loncom/interface/lonfeedback.pm	2017/11/08 00:36:56	1.375
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Feedback
 #
-# $Id: lonfeedback.pm,v 1.371 2015/09/30 21:04:04 musolffc Exp $
+# $Id: lonfeedback.pm,v 1.375 2017/11/08 00:36:56 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 {
+                        $discussion .= '<p class="LC_error">'.
+                                       &mt('Unfortunately you will not be able to retrieve an archive of the discussion posts at this time, because there was a problem creating the zip file.').'</p>';
                     }
                 }
             } else {
@@ -847,7 +854,7 @@ sub send_feedback_link {
                  &discussion_link($ressymb,
                     '<img alt="" class="LC_noBorder" src="'.
                     &Apache::loncommon::lonhttpdurl('/adm/lonMisc/chat.gif').
-                    '" border="0" /><span class="LC_menubuttons_inline_text">'.&mt('Post Discussion').'</span>',
+                    '" /><span class="LC_menubuttons_inline_text">'.&mt('Post Discussion').'</span>',
                     'replydisc').
            '</span>';
 }
@@ -858,7 +865,7 @@ sub send_message_link {
                  &discussion_link($ressymb,
                     '<img alt="" class="LC_noBorder" src="'.
                     &Apache::loncommon::lonhttpdurl('/res/adm/pages/feedback.png').
-                    '" border="0" /><span class="LC_menubuttons_inline_text">'.&mt('Send Feedback').'</span>',
+                    '" /><span class="LC_menubuttons_inline_text">'.&mt('Send Feedback').'</span>',
                     'sendmessageonly').
                  '</span>';
     return $output;
@@ -933,7 +940,7 @@ sub postingform_display {
         $currnewattach,$currdelold,$group,$crstype) = @_;
     my $newattachmsg;
     my %lt = &Apache::lonlocal::texthash(
-              'note' => 'Note: in anonymous discussion, your name is visible only to course faculty',
+             'note' => 'Note: in anonymous discussion, your name is visible only to course faculty',
              'title' => 'Title',
              'podi' => 'Post Discussion',
              'poan' => 'Post Anonymous Discussion',
@@ -952,9 +959,14 @@ sub postingform_display {
             }
         }
     }
+    my $postanon;
+    if (&Apache::lonnet::allowed('pac',$env{'request.course.id'}.
+       ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) {
+        $postanon = '<input type="submit" name="anondiscuss" value="'.$lt{'poan'}.'" />';
+    }
     $postingform .= (<<ENDDISCUSS);
 <form action="/adm/feedback" method="post" name="mailform" enctype="multipart/form-data"> <input type="submit" name="discuss" value="$lt{'podi'}" />
-<input type="submit" name="anondiscuss" value="$lt{'poan'}" /> <input type="hidden" name="symb" value="$ressymb" />
+$postanon<input type="hidden" name="symb" value="$ressymb" />
 <input type="hidden" name="sendit" value="true" />
 <input type="hidden" name="timestamp" value="$now" />
 <a name="newpost"></a>
@@ -1285,7 +1297,7 @@ sub build_posting_display {
                                 if (&editing_allowed($escsymb.':::'.$idx,$group)) {
                                     if (($env{'user.domain'} eq $contrib{$idx.':senderdomain'}) && ($env{'user.name'} eq $contrib{$idx.':sendername'})) {
                                         $sender.=' '.
-                                         &discussion_link($symb,&mt('Edit'),'editdisc',$idx,$$newpostsflag,$prevread,&group_args($group));
+                                         &discussion_link($ressymb,&mt('Edit'),'editdisc',$idx,$$newpostsflag,$prevread,&group_args($group));
                                         unless ($seehidden) {
                                             my $grpargs = &group_args($group);
                                             $sender.=" <a href=\"javascript:verifydelete('studentdelete','$escsymb','$idx','$$newpostsflag','$prevread','$grpargs')";
@@ -1297,11 +1309,11 @@ sub build_posting_display {
 			            if ($hiddens{$idx}) {
                                         unless ($studenthidden) {
  		                           $sender.=' '.
-                                            &discussion_link($symb,&mt('Make Visible'),'unhide',$idx,$$newpostsflag,$prevread,&group_args($group));
+                                            &discussion_link($ressymb,&mt('Make Visible'),'unhide',$idx,$$newpostsflag,$prevread,&group_args($group));
                                         }
 			            } else {
                                         $sender.=' '.
-                                         &discussion_link($symb,&mt('Hide'),'hide',$idx,$$newpostsflag,$prevread,&group_args($group));
+                                         &discussion_link($ressymb,&mt('Hide'),'hide',$idx,$$newpostsflag,$prevread,&group_args($group));
 			            }
                                     my $grpargs = &group_args($group);
 			            $sender.= 
@@ -1340,13 +1352,13 @@ sub build_posting_display {
                                 if (($group ne '') && 
                                     (&check_group_priv($group,'pgd') eq 'ok')) {
                                      $sender.=' '.
-                                         &discussion_link($symb,&mt('Reply'),'replydisc',$idx,$$newpostsflag,$prevread,&group_args($group));
+                                         &discussion_link($ressymb,&mt('Reply'),'replydisc',$idx,$$newpostsflag,$prevread,&group_args($group));
                                 } elsif (&Apache::lonnet::allowed('pch', 
 				     $env{'request.course.id'}.
 				     ($env{'request.course.sec'}?'/'.
                                       $env{'request.course.sec'}:''))) {
 			             $sender.=' '.
-                                         &discussion_link($symb,&mt('Reply'),'replydisc',$idx,$$newpostsflag,$prevread);
+                                         &discussion_link($ressymb,&mt('Reply'),'replydisc',$idx,$$newpostsflag,$prevread);
                                 }
                             }
 		            if ($viewgrades) {
@@ -1513,12 +1525,12 @@ sub build_posting_display {
                                     if ($userlikes{$idx}) {
                                         $$discussionitems[$idx].='<img border="0" src="/res/adm/pages/thumbsup_gray.png" alt="'.&mt('You like this posting').'" />';
                                     } else {
-                                        $$discussionitems[$idx].='&nbsp;'.&discussion_link($symb,'<img border="0" src="/res/adm/pages/thumbsup.png" alt="'.&mt('Like').'" />','like',$idx,$$newpostsflag,$prevread,&group_args($group),&mt("Like this posting"));
+                                        $$discussionitems[$idx].='&nbsp;'.&discussion_link($ressymb,'<img border="0" src="/res/adm/pages/thumbsup.png" alt="'.&mt('Like').'" />','like',$idx,$$newpostsflag,$prevread,&group_args($group),&mt("Like this posting"));
                                     }
                                     if ($userunlikes{$idx}) {
                                         $$discussionitems[$idx].='<img border="0" src="/res/adm/pages/thumbsdown_gray.png" alt="'.&mt('You unlike this posting').'" />';
                                     } else {
-                                        $$discussionitems[$idx].='&nbsp;'.&discussion_link($symb,'<img border="0" src="/res/adm/pages/thumbsdown.png" alt="'.&mt('Unlike').'" />','unlike',$idx,$$newpostsflag,$prevread,&group_args($group),&mt("Unlike this posting"));
+                                        $$discussionitems[$idx].='&nbsp;'.&discussion_link($ressymb,'<img border="0" src="/res/adm/pages/thumbsdown.png" alt="'.&mt('Unlike').'" />','unlike',$idx,$$newpostsflag,$prevread,&group_args($group),&mt("Unlike this posting"));
                                     }
                                 }
                             }
@@ -1536,7 +1548,7 @@ sub build_posting_display {
                                 $$discussionitems[$idx] .= '&nbsp;&nbsp;'.&mt('This post has been edited by the author.');
                                 if ($seehidden) {
                                     $$discussionitems[$idx] .= '&nbsp;&nbsp;'.
-                                         &discussion_link($symb,&mt('Display all versions'),'allversions',$idx,$$newpostsflag,$prevread,&group_args($group));
+                                         &discussion_link($ressymb,&mt('Display all versions'),'allversions',$idx,$$newpostsflag,$prevread,&group_args($group));
                                 }
                                 $$discussionitems[$idx].='<br/>'.&mt('Earlier version(s) were posted on: ');
                                 if ($contrib{$idx.':history'} =~ m/:/) {
@@ -2062,7 +2074,7 @@ END
         $r->print('<input type="hidden" name="ref" value="'.$env{'form.ref'}.'" />');
     }
     $r->print(<<END);
-<input type="hidden" name="sendit" value="1" />
+<input type="hidden" name="sendit" value="1" /><br /><br />
 <input type="button" value="$send" onclick='gosubmit();' />
 </form>
 END
@@ -2937,12 +2949,16 @@ sub screen_header {
 				      $env{'request.course.id'}.
 				      ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')) || 
             (($group ne '') && ($symb =~ m{^bulletin___\d+___adm/wrapper/adm/\Q$cdom\E/\Q$cnum\E/\d+/bulletinboard$}) && (&check_group_priv($group,'pgd') eq 'ok')))) {
-	    $discussoptions='<label><input type="radio" name="discuss" value="nonanon" checked="checked" /> '.
-		$contribdisc.
-	        '</label><br /><label><input type="radio" name="discuss" value="anon" /> '.
-		$anoncontrib.
-		' <i>('.$namevis.')</i></label> '.
-		'<a href="/adm/preferences?action=changescreenname">'.&mt('Change Screenname').'</a>';
+            $discussoptions='<label><input type="radio" name="discuss" value="nonanon" checked="checked" /> '.
+                            $contribdisc.
+                            '</label>'; 
+            if (&Apache::lonnet::allowed('pac',$env{'request.course.id'}.
+               ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) {
+	        $discussoptions .= '<br /><label><input type="radio" name="discuss" value="anon" /> '.
+		                   $anoncontrib.
+		                   ' <i>('.$namevis.')</i></label> '.
+		                   '<a href="/adm/preferences?action=changescreenname">'.&mt('Change Screenname').'</a>';
+            }
             my $blockblog = &Apache::loncommon::blocking_status('blogs');
             if (!$blockblog) {
                 $discussoptions.= &add_blog_checkbox($crstype);
@@ -4636,7 +4652,11 @@ ENDREDIR
 	     && $env{'form.discuss'} !~ /^(?:author|question|course|policy)/)
 	   || $env{'form.anondiscuss'} ne '') {
 	  my $subject = &clear_out_html($env{'form.subject'});
-	  my $anonmode=($env{'form.discuss'} eq 'anon' || $env{'form.anondiscuss'} );
+          my $anonmode;
+          if (&Apache::lonnet::allowed('pac',$env{'request.course.id'}.
+             ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) {
+	      $anonmode=($env{'form.discuss'} eq 'anon' || $env{'form.anondiscuss'} );
+          }
 	  $typestyle.=&adddiscuss($symb,$message,$anonmode,$attachmenturl,
 				  $subject,$group);
 	  $numpost++;