--- loncom/interface/lonmsgdisplay.pm	2015/06/09 21:22:56	1.181
+++ loncom/interface/lonmsgdisplay.pm	2021/12/14 00:20:07	1.181.2.8
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines for messaging display
 #
-# $Id: lonmsgdisplay.pm,v 1.181 2015/06/09 21:22:56 damieng Exp $
+# $Id: lonmsgdisplay.pm,v 1.181.2.8 2021/12/14 00:20:07 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -102,6 +102,8 @@ use HTML::TokeParser();
 use Apache::Constants qw(:common);
 use Apache::loncommon();
 use Apache::lonhtmlcommon();
+use Apache::longroup;
+use Apache::lonnavmaps;
 use Apache::lontexconvert();
 use HTML::Entities();
 use Apache::lonlocal;
@@ -773,22 +775,36 @@ sub groupmail_header {
               text=>"Groups",
               title=>$brtitle});
     }
+    my $view_permission =
+          &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my $grouppagelink = &Apache::longroup::get_group_link($cdom,$cnum,$group,$navmap,$view_permission,$refarg);
+    if ($grouppagelink) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({href=>$grouppagelink,
+              text=>&mt('Group').": $description",
+              title=>&mt("Go to group's home page"),
+              no_mt=>1,
+             },);
+    } else {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({text=>&mt('Group').": $description",
+              no_mt=>1,});
+    }
     &Apache::lonhtmlcommon::add_breadcrumb
-        ({href=>"/adm/$cdom/$cnum/$group/smppg?$refarg",
-          text=>"Group: $description",
-          title=>"Go to group's home page"},
-         {href=>"/adm/email?compose=group&group=".
-                "$env{'form.group'}&$refarg",
-          text=>"Send a Message in a Group",
-          title=>"Compose Group Message"},);
+         ({href=>"/adm/email?compose=group&group=".
+                 "$env{'form.group'}&$refarg",
+           text=>"Send a Message in a Group",
+           title=>"Compose Group Message"},);
     if ($action eq 'sending') {
             &Apache::lonhtmlcommon::add_breadcrumb
                          ({text=>"Messages being sent.",
                            title=>"E-mails sent"},);
     }
     my $groupheader = &Apache::loncommon::start_page('Group Message');
-    $groupheader .= &Apache::lonhtmlcommon::breadcrumbs
-                ('Group - '.$env{'form.group'}.' Email');
+    $groupheader .= &Apache::lonhtmlcommon::breadcrumbs(
+                                    &mt('Group messages - [_1]',$description),
+                                                        undef,undef,undef,undef,1);
     return $groupheader;
 }
 
@@ -849,7 +865,7 @@ sub discrit {
                       .&Apache::lonhtmlcommon::row_closure(1);
         }
         $result .= &Apache::lonhtmlcommon::row_title(&mt('Message'),undef,'LC_evenrow_value')
-                  .'<pre>'.&Apache::lontexconvert::msgtexconverted($content{'message'}).'</pre>'
+                  .'<pre class="LC_wordwrap">'.&Apache::lontexconvert::msgtexconverted($content{'message'}).'</pre>'
                   .&Apache::lonhtmlcommon::row_closure()
                   .&Apache::lonhtmlcommon::row_title('',undef,'LC_oddrow_value')
                   .'<div class="LC_warning">';
@@ -896,7 +912,7 @@ sub discrit {
 }
 
 sub sortedmessages {
-    my ($blocked,$startblock,$endblock,$numblocked,$folder,$msgstatus) = @_;
+    my ($blocked,$startblock,$endblock,$by_ip,$numblocked,$folder,$msgstatus) = @_;
     my $suffix=&Apache::lonmsg::foldersuffix($folder);
     my @messages = &Apache::lonnet::getkeys('nohist_email'.$suffix);
     #unpack the varibles and repack into temp for sorting
@@ -928,7 +944,8 @@ sub sortedmessages {
 	    push(@temp1,$content{'recuser'},$content{'recdomain'});
 	}
         # Check whether message was sent during blocking period.
-        if ($sendtime >= $startblock && ($sendtime <= $endblock && $endblock > 0) ) {
+        if (($by_ip) ||
+            (($sendtime >= $startblock) && ($sendtime <= $endblock && $endblock > 0))) {
             $$blocked{$msgid} = 'ON';
             $$numblocked ++;
         } else { 
@@ -1055,7 +1072,9 @@ sub disfolder {
     my %blocked = ();
     my %setters = ();
     my $numblocked = 0;
-    my ($startblock,$endblock) = &Apache::loncommon::blockcheck(\%setters,'com');
+    my $clientip = &Apache::lonnet::get_requestor_ip($r);
+    my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
+        &Apache::loncommon::blockcheck(\%setters,'com',$clientip);
     my %js_lt = &Apache::lonlocal::texthash(
                       sede => 'Select a destination folder to which the messages will be moved.',
                       nome => 'No messages have been selected to apply this action to.',
@@ -1099,7 +1118,7 @@ sub disfolder {
 ENDDISHEADER
 
     my $fsqs='&amp;folder='.$folder;
-    my @temp=&sortedmessages(\%blocked,$startblock,$endblock,\$numblocked,$folder,$msgstatus);
+    my @temp=&sortedmessages(\%blocked,$startblock,$endblock,$by_ip,\$numblocked,$folder,$msgstatus);
     my $totalnumber=$#temp+1;
     if ($totalnumber < 1) {
         $r->print('<p class="LC_info">');
@@ -1112,7 +1131,7 @@ ENDDISHEADER
         }
         $r->print('</p>');
         if ($numblocked > 0) {
-            $r->print(&blocked_in_folder($numblocked,$startblock,$endblock,
+            $r->print(&blocked_in_folder($numblocked,$startblock,$endblock,$by_ip,$clientip,$blockdom,
                                          \%setters));
         }
         return;
@@ -1302,20 +1321,26 @@ ENDDISHEADER
     $r->print('<input type="hidden" name="folder" value="'.$folder.'" /><input type="hidden" name="startdis" value="'.$postedstartdis.'" /><input type="hidden" name="interdis" value="'.$env{'form.interdis'}.'" /><input type="hidden" name="msgstatus" value="'.$msgstatus.'" /><input type="hidden" name="markedaction" value="" /></form>');
     if ($numblocked > 0) {
         $r->print(&blocked_in_folder($numblocked,$startblock,$endblock,
-                                     \%setters));
+                                     $by_ip,$clientip,$blockdom,\%setters));
     }
 }
 
 sub blocked_in_folder {
-    my ($numblocked,$startblock,$endblock,$setters) = @_;
-    my $beginblock = &Apache::lonlocal::locallocaltime($startblock);
-    my $finishblock = &Apache::lonlocal::locallocaltime($endblock);
-    my $output = '<br /><br />'.
+    my ($numblocked,$startblock,$endblock,$by_ip,$clientip,$blockdom,$setters) = @_;
+    my $output;
+    if ($by_ip) {
+        $output = '<br /><br />'.
+                  &mt('[quant,_1,message is, messages are] not viewable because display of LON-CAPA messages is blocked for your current IP address: [_2].',$numblocked,$clientip).'<br />'.
+                  &mt('Note: communication is being blocked for certain IP address(es).');
+    } else {
+        my $beginblock = &Apache::lonlocal::locallocaltime($startblock);
+        my $finishblock = &Apache::lonlocal::locallocaltime($endblock);
+        $output = '<br /><br />'.
                   &mt('[quant,_1,message is, messages are] not viewable because display of LON-CAPA messages sent to you by other students between [_2] and [_3] is currently being blocked because of online exams.',$numblocked,$beginblock,$finishblock);
+    }
     #$output .= &Apache::loncommon::build_block_table($startblock,$endblock,
     #                                                 $setters);
-    
-    my ($blocked, $blocktext) = &Apache::loncommon::blocking_status("com");
+    my ($blocked, $blocktext) = &Apache::loncommon::blocking_status("com",$clientip);
     $output .="<br /><br />".$blocktext;
 
     return $output;
@@ -1400,11 +1425,14 @@ sub compout {
                                        'to'   => 'To:',
                                       );
     my %attachmax = (
-                     text => &mt('(128 KB max size)'),
-                     num  => 131072,
+                     text => &mt('(1 MB max size)'),
+                     num  => 1048576,
                     );
     if (!$forwarding && !$multiforward) {
-        $attachrow = '<tr><td colspan="3"><b>'.$lt{'atta'}.'</b> '.$attachmax{'text'}.': <input type="file" name="attachment" /></td></tr>';
+        $attachrow = '<tr><td colspan="3"><b>'.$lt{'atta'}.'</b> '.$attachmax{'text'}
+            .': <input type="file" name="attachment" class="LC_flUpload" />'
+            .'<input type="hidden" id="LC_free_space" value="'.$attachmax{'num'}.'" />'
+            .'</td></tr>';
     }
     if (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
 	|| &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
@@ -1959,7 +1987,7 @@ sub disfacetoface {
  &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).'</b> ('.
 $content{'sendername'}.':'.
             $content{'senderdomain'}.') '.$content{'time'}.
-            '<br /><pre>'.
+            '<br /><pre class="LC_wordwrap">'.
               &Apache::lontexconvert::msgtexconverted($content{'message'}).
 	      '</pre>';
      }
@@ -2087,14 +2115,16 @@ sub displaymessage {
     my %setters = ();
     my $numblocked = 0;
     my $crstype = &Apache::loncommon::course_type();
+    my $clientip = &Apache::lonnet::get_requestor_ip($r);
 
 # info to generate "next" and "previous" buttons and check if message is blocked
-    my ($startblock,$endblock) = &Apache::loncommon::blockcheck(\%setters,'com');
-    my @messages=&sortedmessages(\%blocked,$startblock,$endblock,\$numblocked,$folder,$msgstatus);
+    my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) = 
+        &Apache::loncommon::blockcheck(\%setters,'com',$clientip);
+    my @messages=&sortedmessages(\%blocked,$startblock,$endblock,$by_ip,\$numblocked,$folder,$msgstatus);
     if ( $blocked{$msgid} eq 'ON' ) {
         &printheader($r,'/adm/email',&mt('Display a Message'));
         #$r->print(&mt('You attempted to display a message that is currently blocked because you are enrolled in one or more courses for which there is an ongoing online exam.'));
-        my($blocked, $blocktext) = &Apache::loncommon::blocking_status("com");
+        my($blocked, $blocktext) = &Apache::loncommon::blocking_status("com",$clientip);
         $r->print("<br />".$blocktext);
         return;
     }
@@ -2128,8 +2158,28 @@ sub displaymessage {
 
 
     my $number_of_messages = scalar(@messages); #subtract 1 for last index
+    my $head_extra;
+
+# if student's view of resource will be included
+# get <link> tag(s) for css file(s) in use, and pass to &header to include
+# in call to loncommon::start_page()
+
+    if (($env{'request.course.id'} eq $content{'courseid'}) &&
+        (&Apache::lonnet::allowed('vgr',$content{'courseid'}))) {
+        my $symb;
+        if (defined($content{'symb'})) {
+            $symb = $content{'symb'};
+        } elsif (defined($content{'baseurl'})) {
+            $symb=&Apache::lonnet::symbread($content{'baseurl'});
+        }
+        if ($symb) {
+            $head_extra = &Apache::loncommon::css_links($symb);
+        }
+    }
+
 # start output
-    &printheader($r,'/adm/email?display='.&escape($msgid),'Display a Message','',$content{'baseurl'});
+    &printheader($r,'/adm/email?display='.&escape($msgid),'Display a Message','',
+                 $content{'baseurl'},$head_extra);
 
 # Prepare available functions
     my @functionlist;
@@ -2174,7 +2224,8 @@ sub displaymessage {
     my @actionlist;
     if ($env{'user.adv'}) {
 
-	if (&Apache::lonnet::allowed('vgr',$env{'request.course.id'})) {
+	if (($env{'request.course.id'}) && ($from_student) &&
+            (&Apache::lonnet::allowed('vgr',$env{'request.course.id'}))) {
 		push(@actionlist,&Apache::loncommon::track_student_link(
                                       'View recent activity'
                                      ,$content{'sendername'}
@@ -2477,7 +2528,7 @@ sub displaymessage {
 
     # Message
     $r->print(&Apache::lonhtmlcommon::row_title(&mt('Message'))
-             .'<pre>'
+             .'<pre class="LC_wordwrap">'
 	     .&Apache::lontexconvert::msgtexconverted($content{'message'},1)
 	     .'</pre>'
     );
@@ -2662,11 +2713,16 @@ sub displayresource {
 # ================================================================== The Header
 
 sub header {
-    my ($r,$title,$baseurl)=@_;
+    my ($r,$title,$baseurl,$head_extra)=@_;
     my $extra = &Apache::loncommon::studentbrowser_javascript();
     if ($baseurl) {
 	$extra .= "<base href=\"".&Apache::lonnet::absolute_url()."/$baseurl\" />";
     }
+    $extra .= '<script type="text/javascript"
+                src="/res/adm/includes/file_upload.js"></script>';
+    if ($head_extra) {
+        $extra .= "\n$head_extra";
+    }
     $r->print(&Apache::loncommon::start_page('Messages',
  					$extra));
     $r->print(&Apache::lonhtmlcommon::breadcrumbs
@@ -2676,11 +2732,11 @@ sub header {
 # ---------------------------------------------------------------- Print header
 
 sub printheader {
-    my ($r,$url,$desc,$title,$baseurl)=@_;
+    my ($r,$url,$desc,$title,$baseurl,$head_extra)=@_;
     &Apache::lonhtmlcommon::add_breadcrumb
 	({href=>$url,
 	  text=>$desc});
-    &header($r,$title,$baseurl);
+    &header($r,$title,$baseurl,$head_extra);
 }
 
 # ------------------------------------------------------------ Store the comment
@@ -2907,7 +2963,7 @@ sub sendoffmail {
             &Apache::lonnet::logthis('Failed to store To, Bcc and Cc recipients for '.$env{'user.name'}.':'.$env{'user.domain'});
         }
         if ($env{'form.attachment'}) {
-            if (length($env{'form.attachment'})<131072) {
+            if (length($env{'form.attachment'}) <= 1048576) {
                 $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,'feedback/'.$now);
             } else {
                 $r->print('<p><span class="LC_warning">'.&mt('Attachment not included - exceeded permitted length').'</span><br /></p>');