--- loncom/lonnet/perl/lonnet.pm	2012/11/30 16:50:30	1.1203
+++ loncom/lonnet/perl/lonnet.pm	2015/03/30 21:13:24	1.1278
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1203 2012/11/30 16:50:30 raeburn Exp $
+# $Id: lonnet.pm,v 1.1278 2015/03/30 21:13:24 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -356,8 +356,11 @@ sub get_remote_globals {
 }
 
 sub remote_devalidate_cache {
-    my ($lonhost,$name,$id) = @_;
-    my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
+    my ($lonhost,$cachekeys) = @_;
+    my $items;
+    return unless (ref($cachekeys) eq 'ARRAY');
+    my $cachestr = join('&',@{$cachekeys});
+    my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
     return $response;
 }
 
@@ -603,7 +606,7 @@ sub transfer_profile_to_env {
 
 # ---------------------------------------------------- Check for valid session 
 sub check_for_valid_session {
-    my ($r,$name) = @_;
+    my ($r,$name,$userhashref) = @_;
     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
     if ($name eq '') {
         $name = 'lonID';
@@ -634,6 +637,12 @@ sub check_for_valid_session {
 	|| !defined($disk_env{'user.domain'})) {
 	return undef;
     }
+
+    if (ref($userhashref) eq 'HASH') {
+        $userhashref->{'name'} = $disk_env{'user.name'};
+        $userhashref->{'domain'} = $disk_env{'user.domain'};
+    }
+
     return $handle;
 }
 
@@ -667,7 +676,7 @@ sub appenv {
 	    if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
                 $refused = 1;
                 if (ref($roles) eq 'ARRAY') {
-                    my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
+                    my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
                     if (grep(/^\Q$role\E$/,@{$roles})) {
                         $refused = 0;
                     }
@@ -881,7 +890,17 @@ sub spareserver {
 }
 
 sub compare_server_load {
-    my ($try_server, $spare_server, $lowest_load) = @_;
+    my ($try_server, $spare_server, $lowest_load, $required) = @_;
+
+    if ($required) {
+        my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
+        my $remoterev = &get_server_loncaparev(undef,$try_server);
+        my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
+        if (($major eq '' && $minor eq '') ||
+            (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
+            return ($spare_server,$lowest_load);
+        }
+    }
 
     my $loadans     = &reply('load',    $try_server);
     my $userloadans = &reply('userload',$try_server);
@@ -942,26 +961,43 @@ sub has_user_session {
 # --------- determine least loaded server in a user's domain which allows login
 
 sub choose_server {
-    my ($udom,$checkloginvia) = @_;
+    my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
     my %domconfhash = &Apache::loncommon::get_domainconf($udom);
     my %servers = &get_servers($udom);
     my $lowest_load = 30000;
-    my ($login_host,$hostname,$portal_path,$isredirect);
+    my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
+    if ($skiploadbal) {
+        ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
+        unless (defined($cached)) {
+            my $cachetime = 60*60*24;
+            my %domconfig =
+                &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
+            if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
+                $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
+                                           $cachetime);
+            }
+        }
+    }
     foreach my $lonhost (keys(%servers)) {
+        if ($skiploadbal) {
+            if (ref($balancers) eq 'HASH') {
+                next if (exists($balancers->{$lonhost}));
+            }
+        }   
         my $loginvia;
         if ($checkloginvia) {
             $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
             if ($loginvia) {
                 my ($server,$path) = split(/:/,$loginvia);
                 ($login_host, $lowest_load) =
-                    &compare_server_load($server, $login_host, $lowest_load);
+                    &compare_server_load($server, $login_host, $lowest_load, $required);
                 if ($login_host eq $server) {
                     $portal_path = $path;
                     $isredirect = 1;
                 }
             } else {
                 ($login_host, $lowest_load) =
-                    &compare_server_load($lonhost, $login_host, $lowest_load);
+                    &compare_server_load($lonhost, $login_host, $lowest_load, $required);
                 if ($login_host eq $lonhost) {
                     $portal_path = '';
                     $isredirect = ''; 
@@ -969,7 +1005,7 @@ sub choose_server {
             }
         } else {
             ($login_host, $lowest_load) =
-                &compare_server_load($lonhost, $login_host, $lowest_load);
+                &compare_server_load($lonhost, $login_host, $lowest_load, $required);
         }
     }
     if ($login_host ne '') {
@@ -1143,15 +1179,16 @@ sub spare_can_host {
     my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
     my $canhost=1;
     my @intdoms;
-    my $internet_names = &Apache::lonnet::get_internet_names($try_server);
+    my $internet_names = &get_internet_names($try_server);
     if (ref($internet_names) eq 'ARRAY') {
         @intdoms = @{$internet_names};
     }
     unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
-        my $serverhomeID = &Apache::lonnet::get_server_homeID($try_server);
-        my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
-        my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
-        my $remoterev = &Apache::lonnet::get_server_loncaparev(undef,$try_server);
+        my $try_server_hostname = &hostname($try_server);
+        my $serverhomeID = &get_server_homeID($try_server_hostname);
+        my $serverhomedom = &host_domain($serverhomeID);
+        my %defdomdefaults = &get_domain_defaults($serverhomedom);
+        my $remoterev = &get_server_loncaparev(undef,$try_server);
         $canhost = &can_host_session($udom,$try_server,$remoterev,
                                      $remotesessions,
                                      $defdomdefaults{'hostedsessions'});
@@ -1316,7 +1353,7 @@ sub check_loadbalancing {
             }
         }
     } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
-        my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
+        ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
         unless (defined($cached)) {
             my %domconfig =
                 &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
@@ -1571,6 +1608,36 @@ sub idput {
     }
 }
 
+# ---------------------------------------- Delete unwanted IDs from ids.db file 
+
+sub iddel {
+    my ($udom,$idshashref,$uhome)=@_;
+    my %result=();
+    unless (ref($idshashref) eq 'HASH') {
+        return %result;
+    }
+    my %servers=();
+    while (my ($id,$uname) = each(%{$idshashref})) {
+        my $uhom;
+        if ($uhome) {
+            $uhom = $uhome;
+        } else {
+            $uhom=&homeserver($uname,$udom);
+        }
+        if ($uhom ne 'no_host') {
+            if ($servers{$uhom}) {
+                $servers{$uhom}.='&'.&escape($id);
+            } else {
+                $servers{$uhom}=&escape($id);
+            }
+        }
+    }
+    foreach my $server (keys(%servers)) {
+        $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
+    }
+    return %result;
+}
+
 # ------------------------------dump from db file owned by domainconfig user
 sub dump_dom {
     my ($namespace, $udom, $regexp) = @_;
@@ -1586,6 +1653,7 @@ sub dump_dom {
 
 sub get_dom {
     my ($namespace,$storearr,$udom,$uhome)=@_;
+    return if ($udom eq 'public');
     my $items='';
     foreach my $item (@$storearr) {
         $items.=&escape($item).'&';
@@ -1593,6 +1661,7 @@ sub get_dom {
     $items=~s/\&$//;
     if (!$udom) {
         $udom=$env{'user.domain'};
+        return if ($udom eq 'public');
         if (defined(&domain($udom,'primary'))) {
             $uhome=&domain($udom,'primary');
         } else {
@@ -1696,14 +1765,13 @@ sub retrieve_inst_usertypes {
     my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
     if ((ref($domdefs{'inststatustypes'}) eq 'HASH') && 
         (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
-        %returnhash = %{$domdefs{'inststatustypes'}};
-        @order = @{$domdefs{'inststatusorder'}};
+        return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
     } else {
         if (defined(&domain($udom,'primary'))) {
             my $uhome=&domain($udom,'primary');
             my $rep=&reply("inst_usertypes:$udom",$uhome);
             if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
-                &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
+                &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
                 return (\%returnhash,\@order);
             }
             my ($hashitems,$orderitems) = split(/:/,$rep); 
@@ -1719,10 +1787,10 @@ sub retrieve_inst_usertypes {
                 push(@order,&unescape($item));
             }
         } else {
-            &logthis("get_dom failed - no primary domain server for $udom");
+            &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
         }
+        return (\%returnhash,\@order);
     }
-    return (\%returnhash,\@order);
 }
 
 sub is_domainimage {
@@ -1947,12 +2015,15 @@ sub inst_userrules {
 # ------------- Get Authentication, Language and User Tools Defaults for Domain
 
 sub get_domain_defaults {
-    my ($domain) = @_;
+    my ($domain,$ignore_cache) = @_;
+    return if (($domain eq '') || ($domain eq 'public'));
     my $cachetime = 60*60*24;
-    my ($result,$cached)=&is_cached_new('domdefaults',$domain);
-    if (defined($cached)) {
-        if (ref($result) eq 'HASH') {
-            return %{$result};
+    unless ($ignore_cache) {
+        my ($result,$cached)=&is_cached_new('domdefaults',$domain);
+        if (defined($cached)) {
+            if (ref($result) eq 'HASH') {
+                return %{$result};
+            }
         }
     }
     my %domdefaults;
@@ -1960,7 +2031,9 @@ sub get_domain_defaults {
          &Apache::lonnet::get_dom('configuration',['defaults','quotas',
                                   'requestcourses','inststatus',
                                   'coursedefaults','usersessions',
-                                  'requestauthor'],$domain);
+                                  'requestauthor','selfenrollment',
+                                  'coursecategories'],$domain);
+    my @coursetypes = ('official','unofficial','community','textbook');
     if (ref($domconfig{'defaults'}) eq 'HASH') {
         $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'}; 
         $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
@@ -1978,16 +2051,19 @@ sub get_domain_defaults {
             $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
         } else {
             $domdefaults{'defaultquota'} = $domconfig{'quotas'};
-        } 
+        }
         my @usertools = ('aboutme','blog','webdav','portfolio');
         foreach my $item (@usertools) {
             if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
                 $domdefaults{$item} = $domconfig{'quotas'}{$item};
             }
         }
+        if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
+            $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
+        }
     }
     if (ref($domconfig{'requestcourses'}) eq 'HASH') {
-        foreach my $item ('official','unofficial','community') {
+        foreach my $item ('official','unofficial','community','textbook') {
             $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
         }
     }
@@ -1995,13 +2071,32 @@ sub get_domain_defaults {
         $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
     }
     if (ref($domconfig{'inststatus'}) eq 'HASH') {
-        foreach my $item ('inststatustypes','inststatusorder') {
+        foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
             $domdefaults{$item} = $domconfig{'inststatus'}{$item};
         }
     }
     if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
-        foreach my $item ('canuse_pdfforms') {
-            $domdefaults{$item} = $domconfig{'coursedefaults'}{$item};
+        $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
+        $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
+        $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
+        if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
+            $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
+        }
+        foreach my $type (@coursetypes) {
+            if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
+                unless ($type eq 'community') {
+                    $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
+                }
+            }
+            if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
+                $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
+            }
+            if ($domdefaults{'postsubmit'} eq 'on') {
+                if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
+                    $domdefaults{$type.'postsubtimeout'} = 
+                        $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type}; 
+                }
+            }
         }
     }
     if (ref($domconfig{'usersessions'}) eq 'HASH') {
@@ -2012,8 +2107,45 @@ sub get_domain_defaults {
             $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
         }
     }
-    &Apache::lonnet::do_cache_new('domdefaults',$domain,\%domdefaults,
-                                  $cachetime);
+    if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
+        if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
+            my @settings = ('types','registered','enroll_dates','access_dates','section',
+                            'approval','limit');
+            foreach my $type (@coursetypes) {
+                if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
+                    my @mgrdc = ();
+                    foreach my $item (@settings) {
+                        if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
+                            push(@mgrdc,$item);
+                        }
+                    }
+                    if (@mgrdc) {
+                        $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
+                    }
+                }
+            }
+        }
+        if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
+            foreach my $type (@coursetypes) {
+                if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
+                    foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
+                        $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
+                    }
+                }
+            }
+        }
+    }
+    if (ref($domconfig{'coursecategories'}) eq 'HASH') {
+        $domdefaults{'catauth'} = 'std';
+        $domdefaults{'catunauth'} = 'std';
+        if ($domconfig{'coursecategories'}{'auth'}) { 
+            $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
+        }
+        if ($domconfig{'coursecategories'}{'unauth'}) {
+            $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
+        }
+    }
+    &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
     return %domdefaults;
 }
 
@@ -2603,7 +2735,12 @@ sub ssi {
     &Apache::lonenc::check_encrypt(\$fn);
     if (%form) {
       $request=new HTTP::Request('POST',&absolute_url().$fn);
-      $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
+      $request->content(join('&',map { 
+            my $name = escape($_);
+            "$name=" . ( ref($form{$_}) eq 'ARRAY' 
+            ? join("&$name=", map {escape($_) } @{$form{$_}}) 
+            : &escape($form{$_}) );    
+        } keys(%form)));
     } else {
       $request=new HTTP::Request('GET',&absolute_url().$fn);
     }
@@ -2716,10 +2853,14 @@ sub can_edit_resource {
                 return;
             }
         } else {
+            if ($resurl =~ m{^/?adm/viewclasslist$}) {
+                unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
+                    return;
+                }
+            } elsif (!$crsedit) {
 #
 # No edit allowed where CC has switched to student role.
 #
-            unless ($crsedit) {
                 return;
             }
         }
@@ -2766,6 +2907,14 @@ sub can_edit_resource {
                         $forceedit = 1;
                     }
                     $cfile = $resurl;
+                } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
+                    $incourse = 1;
+                    if ($env{'form.forceedit'}) {
+                        $forceview = 1;
+                    } else {
+                        $forceedit = 1;
+                    }
+                    $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
                 }
             } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
                 my $template = '/res/lib/templates/simpleproblem.problem';
@@ -2794,11 +2943,18 @@ sub can_edit_resource {
                     $cfile =~ s{^http://}{};
                     $cfile = '/adm/wrapper/ext/'.$cfile;
                 }
+            } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
+                if ($env{'form.forceedit'}) {
+                    $forceview = 1;
+                } else {
+                    $forceedit = 1;
+                }
+                $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
             }
         }
         if ($uploaded || $incourse) {
             $home=&homeserver($cnum,$cdom);
-        } else {
+        } elsif ($file !~ m{/$}) {
             $file=~s{^(priv/$match_domain/$match_username)}{/$1};
             $file=~s{^($match_domain/$match_username)}{/priv/$1};
             # Check that the user has permission to edit this resource
@@ -2835,9 +2991,13 @@ sub in_course {
     my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
     if ($hideprivileged) {
         my $skipuser;
-        if (&privileged($uname,$udom)) {
+        my %coursehash = &coursedescription($cdom.'_'.$cnum);
+        my @possdoms = ($cdom);  
+        if ($coursehash{'checkforpriv'}) { 
+            push(@possdoms,split(/,/,$coursehash{'checkforpriv'})); 
+        }
+        if (&privileged($uname,$udom,\@possdoms)) {
             $skipuser = 1;
-            my %coursehash = &coursedescription($cdom.'_'.$cnum);
             if ($coursehash{'nothideprivileged'}) {
                 foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
                     my $user;
@@ -3170,7 +3330,9 @@ sub userfileupload {
 					 $codebase,$thumbwidth,$thumbheight,
                                          $resizewidth,$resizeheight,$context,$mimetype);
         } else {
-            $fname=$env{'form.folder'}.'/'.$fname;
+            if ($env{'form.folder'}) {
+                $fname=$env{'form.folder'}.'/'.$fname;
+            }
             return &process_coursefile('uploaddoc',$docuname,$docudom,
 				       $fname,$formname,$parser,
 				       $allfiles,$codebase,$mimetype);
@@ -3185,7 +3347,7 @@ sub userfileupload {
     } else {
         my $docuname=$env{'user.name'};
         my $docudom=$env{'user.domain'};
-        if (exists($env{'form.group'})) {
+        if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
             $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
             $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
         }
@@ -3335,7 +3497,9 @@ sub extract_embedded_items {
 		&add_filetype($allfiles,$attr->{'src'},'src');
 	    }
 	    if (lc($tagname) eq 'a') {
-		&add_filetype($allfiles,$attr->{'href'},'href');
+                unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
+                    &add_filetype($allfiles,$attr->{'href'},'href');
+                }
 	    }
             if (lc($tagname) eq 'script') {
                 my $src;
@@ -3423,8 +3587,26 @@ sub extract_embedded_items {
                     }
                 }
 	    }
+            if (lc($tagname) eq 'iframe') {
+                my $src = $attr->{'src'} ;
+                if (($src ne '') && ($src !~ m{^(/|https?://)})) {
+                    &add_filetype($allfiles,$src,'src');
+                } elsif ($src =~ m{^/}) {
+                    if ($env{'request.course.id'}) {
+                        my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+                        my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+                        my $url = &hreflocation('',$fullpath);
+                        if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
+                            my $relpath = $1;
+                            if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
+                                &add_filetype($allfiles,$1,'src');
+                            }
+                        }
+                    }
+                }
+            }
             if ($t->[4] =~ m{/>$}) {
-                pop(@state);  
+                pop(@state);
             }
 	} elsif ($t->[0] eq 'E') {
 	    my ($tagname) = ($t->[1]);
@@ -3866,6 +4048,10 @@ sub get_course_adv_roles {
             $nothide{$user}=1;
         }
     }
+    my @possdoms = ($coursehash{'domain'});
+    if ($coursehash{'checkforpriv'}) {
+        push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
+    }
     my %returnhash=();
     my %dumphash=
             &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
@@ -3878,20 +4064,7 @@ sub get_course_adv_roles {
         if (($tstart) && ($now<$tstart)) { next; }
         my ($role,$username,$domain,$section)=split(/\:/,$entry);
 	if ($username eq '' || $domain eq '') { next; }
-        unless (ref($privileged{$domain}) eq 'HASH') {
-            my %dompersonnel =
-                &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
-            $privileged{$domain} = {};
-            foreach my $server (keys(%dompersonnel)) {
-                if (ref($dompersonnel{$server}) eq 'HASH') {
-                    foreach my $user (keys(%{$dompersonnel{$server}})) {
-                        my ($trole,$uname,$udom) = split(/:/,$user);
-                        $privileged{$udom}{$uname} = 1;
-                    }
-                }
-            }
-        }
-        if ((exists($privileged{$domain}{$username})) && 
+        if ((&privileged($username,$domain,\@possdoms)) &&
             (!$nothide{$username.':'.$domain})) { next; }
 	if ($role eq 'cr') { next; }
         if ($codes) {
@@ -3922,8 +4095,7 @@ sub get_my_roles {
     if ($context eq 'userroles') {
         %dumphash = &dump('roles',$udom,$uname);
     } else {
-        %dumphash=
-            &dump('nohist_userroles',$udom,$uname);
+        %dumphash = &dump('nohist_userroles',$udom,$uname);
         if ($hidepriv) {
             my %coursehash=&coursedescription($udom.'_'.$uname);
             foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
@@ -3991,28 +4163,15 @@ sub get_my_roles {
             }
         }
         if ($hidepriv) {
+            my @privroles = ('dc','su');
             if ($context eq 'userroles') {
-                if ((&privileged($username,$domain)) &&
-                    (!$nothide{$username.':'.$domain})) {
-                    next;
-                }
+                next if (grep(/^\Q$role\E$/,@privroles));
             } else {
-                unless (ref($privileged{$domain}) eq 'HASH') {
-                    my %dompersonnel =
-                        &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
-                    $privileged{$domain} = {};
-                    if (keys(%dompersonnel)) {
-                        foreach my $server (keys(%dompersonnel)) {
-                            if (ref($dompersonnel{$server}) eq 'HASH') {
-                                foreach my $user (keys(%{$dompersonnel{$server}})) {
-                                    my ($trole,$uname,$udom) = split(/:/,$user);
-                                    $privileged{$udom}{$uname} = $trole;
-                                }
-                            }
-                        }
-                    }
+                my $possdoms = [$domain];
+                if (ref($roledoms) eq 'ARRAY') {
+                   push(@{$possdoms},@{$roledoms}); 
                 }
-                if (exists($privileged{$domain}{$username})) {
+                if (&privileged($username,$domain,$possdoms,\@privroles)) {
                     if (!$nothide{$username.':'.$domain}) {
                         next;
                     }
@@ -4104,7 +4263,8 @@ sub courseiddump {
     my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
         $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
         $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
-        $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
+        $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
+        $hasuniquecode)=@_;
     my $as_hash = 1;
     my %returnhash;
     if (!$domfilter) { $domfilter=''; }
@@ -4127,7 +4287,7 @@ sub courseiddump {
                                 &escape($catfilter), $showhidden, $caller, 
                                 &escape($cloner), &escape($cc_clone), $cloneonly, 
                                 &escape($createdbefore), &escape($createdafter), 
-                                &escape($creationcontext), $domcloner)));
+                                &escape($creationcontext), $domcloner, $hasuniquecode)));
                 } else {
                     $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
                              $sincefilter.':'.&escape($descfilter).':'.
@@ -4138,7 +4298,7 @@ sub courseiddump {
                              $showhidden.':'.$caller.':'.&escape($cloner).':'.
                              &escape($cc_clone).':'.$cloneonly.':'.
                              &escape($createdbefore).':'.&escape($createdafter).':'.
-                             &escape($creationcontext).':'.$domcloner,
+                             &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode,
                              $tryserver);
                 }
                      
@@ -4247,7 +4407,7 @@ sub get_domain_roles {
     }
     my $rolelist;
     if (ref($roles) eq 'ARRAY') {
-        $rolelist = join(':',@{$roles});
+        $rolelist = join('&',@{$roles});
     }
     my %personnel = ();
 
@@ -4710,7 +4870,7 @@ sub tmprestore {
 # ----------------------------------------------------------------------- Store
 
 sub store {
-    my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
+    my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
     my $home='';
 
     if ($stuname) { $home=&homeserver($stuname,$domain); }
@@ -4740,13 +4900,13 @@ sub store {
     }
     $namevalue=~s/\&$//;
     &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
-    return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
+    return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
 }
 
 # -------------------------------------------------------------- Critical Store
 
 sub cstore {
-    my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
+    my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
     my $home='';
 
     if ($stuname) { $home=&homeserver($stuname,$domain); }
@@ -4777,7 +4937,7 @@ sub cstore {
     $namevalue=~s/\&$//;
     &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
     return critical
-                ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
+                ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
 }
 
 # --------------------------------------------------------------------- Restore
@@ -4789,9 +4949,12 @@ sub restore {
     if ($stuname) { $home=&homeserver($stuname,$domain); }
 
     if (!$symb) {
-      unless ($symb=escape(&symbread())) { return ''; }
+        return if ($namespace eq 'courserequests');
+        unless ($symb=escape(&symbread())) { return ''; }
     } else {
-      $symb=&escape(&symbclean($symb));
+        unless ($namespace eq 'courserequests') {
+            $symb=&escape(&symbclean($symb));
+        }
     }
     if (!$namespace) { 
        unless ($namespace=$env{'request.course.id'}) { 
@@ -4926,22 +5089,95 @@ sub update_released_required {
 # -------------------------------------------------See if a user is privileged
 
 sub privileged {
-    my ($username,$domain)=@_;
-
-    my %rolesdump = &dump("roles", $domain, $username) or return 0;
+    my ($username,$domain,$possdomains,$possroles)=@_;
     my $now = time;
+    my $roles;
+    if (ref($possroles) eq 'ARRAY') {
+        $roles = $possroles; 
+    } else {
+        $roles = ['dc','su'];
+    }
+    if (ref($possdomains) eq 'ARRAY') {
+        my %privileged = &privileged_by_domain($possdomains,$roles);
+        foreach my $dom (@{$possdomains}) {
+            if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
+                (ref($privileged{$dom}) eq 'HASH')) {
+                foreach my $role (@{$roles}) {
+                    if (ref($privileged{$dom}{$role}) eq 'HASH') {
+                        if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
+                            my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
+                            return 1 unless (($end && $end < $now) ||
+                                             ($start && $start > $now));
+                        }
+                    }
+                }
+            }
+        }
+    } else {
+        my %rolesdump = &dump("roles", $domain, $username) or return 0;
+        my $now = time;
 
-    for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys %rolesdump}) {
+        for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
             my ($trole, $tend, $tstart) = split(/_/, $role);
-            if (($trole eq 'dc') || ($trole eq 'su')) {
+            if (grep(/^\Q$trole\E$/,@{$roles})) {
                 return 1 unless ($tend && $tend < $now) 
-                    or ($tstart && $tstart > $now);
+                        or ($tstart && $tstart > $now);
             }
-	}
-
+        }
+    }
     return 0;
 }
 
+sub privileged_by_domain {
+    my ($domains,$roles) = @_;
+    my %privileged = ();
+    my $cachetime = 60*60*24;
+    my $now = time;
+    unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
+        return %privileged;
+    }
+    foreach my $dom (@{$domains}) {
+        next if (ref($privileged{$dom}) eq 'HASH');
+        my $needroles;
+        foreach my $role (@{$roles}) {
+            my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
+            if (defined($cached)) {
+                if (ref($result) eq 'HASH') {
+                    $privileged{$dom}{$role} = $result;
+                }
+            } else {
+                $needroles = 1;
+            }
+        }
+        if ($needroles) {
+            my %dompersonnel = &get_domain_roles($dom,$roles);
+            $privileged{$dom} = {};
+            foreach my $server (keys(%dompersonnel)) {
+                if (ref($dompersonnel{$server}) eq 'HASH') {
+                    foreach my $item (keys(%{$dompersonnel{$server}})) {
+                        my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
+                        my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
+                        next if ($end && $end < $now);
+                        $privileged{$dom}{$trole}{$uname.':'.$udom} = 
+                            $dompersonnel{$server}{$item};
+                    }
+                }
+            }
+            if (ref($privileged{$dom}) eq 'HASH') {
+                foreach my $role (@{$roles}) {
+                    if (ref($privileged{$dom}{$role}) eq 'HASH') {
+                        &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
+                    } else {
+                        my %hash = ();
+                        &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
+                    }
+                }
+            }
+        }
+    }
+    return %privileged;
+}
+
 # -------------------------------------------------------- Get user privileges
 
 sub rolesinit {
@@ -4970,7 +5206,7 @@ sub rolesinit {
     my %allroles=();
     my %allgroups=();
 
-    for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
+    for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
         my $role = $rolesdump{$area};
         $area =~ s/\_\w\w$//;
 
@@ -5051,16 +5287,18 @@ sub rolesinit {
 }
 
 sub set_arearole {
-    my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
+    my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
+    unless ($nolog) {
 # log the associated role with the area
-    &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
+        &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
+    }
     return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
 }
 
 sub custom_roleprivs {
     my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
     my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
-    my $homsvr=homeserver($rauthor,$rdomain);
+    my $homsvr = &homeserver($rauthor,$rdomain);
     if (&hostname($homsvr) ne '') {
         my ($rdummy,$roledef)=
             &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
@@ -5181,11 +5419,11 @@ sub set_userprivs {
 
 sub role_status {
     my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
-    my @pwhere = ();
     if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
-        (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
+        my ($one,$two) = split(m{\./},$rolekey,2);
+        (undef,undef,$$role) = split(/\./,$one,3);
         unless (!defined($$role) || $$role eq '') {
-            $$where=join('.',@pwhere);
+            $$where = '/'.$two;
             $$trolecode=$$role.'.'.$$where;
             ($$tstart,$$tend)=split(/\./,$env{$rolekey});
             $$tstatus='is';
@@ -5322,7 +5560,7 @@ sub set_adhoc_privileges {
     my $area = '/'.$dcdom.'/'.$pickedcourse;
     my $spec = $role.'.'.$area;
     my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
-                                  $env{'user.name'});
+                                  $env{'user.name'},1);
     my %ccrole = ();
     &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
     my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
@@ -5391,11 +5629,11 @@ sub unserialize {
     return {} if $rep =~ /^error/;
 
     my %returnhash=();
-	foreach my $item (split /\&/, $rep) {
+	foreach my $item (split(/\&/,$rep)) {
 	    my ($key, $value) = split(/=/, $item, 2);
 	    $key = unescape($key) unless $escapedkeys;
 	    next if $key =~ /^error: 2 /;
-	    $returnhash{$key} = Apache::lonnet::thaw_unescape($value);
+	    $returnhash{$key} = &thaw_unescape($value);
 	}
     #return %returnhash;
     return \%returnhash;
@@ -5409,18 +5647,17 @@ sub dump {
     if (!$uname) { $uname=$env{'user.name'}; }
     my $uhome=&homeserver($uname,$udomain);
 
-    my $reply;
+    if ($regexp) {
+        $regexp=&escape($regexp);
+    } else {
+        $regexp='.';
+    }
     if (grep { $_ eq $uhome } current_machine_ids()) {
         # user is hosted on this machine
-        $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
-                    $uname, $namespace, $regexp, $range)), $loncaparevs{$uhome});
+        my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
+                    $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
         return %{unserialize($reply, $escapedkeys)};
     }
-    if ($regexp) {
-	$regexp=&escape($regexp);
-    } else {
-	$regexp='.';
-    }
     my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
     my @pairs=split(/\&/,$rep);
     my %returnhash=();
@@ -5598,7 +5835,7 @@ sub newput {
 # ---------------------------------------------------------  putstore interface
 
 sub putstore {
-   my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
+   my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
@@ -5612,6 +5849,17 @@ sub putstore {
    my $reply =
        &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
 	      $uhome);
+   if (($tolog) && ($reply eq 'ok')) {
+       my $namevalue='';
+       foreach my $key (keys(%{$storehash})) {
+           $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
+       }
+       $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
+                     '&host='.&escape($perlvar{'lonHostID'}).
+                     '&version='.$esc_v.
+                     '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
+       &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
+   }
    if ($reply eq 'unknown_cmd') {
        # gfall back to way things use to be done
        return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
@@ -5770,10 +6018,15 @@ sub get_timebased_id {
         my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
         my $id = time;
         $newid = $id;
+        if ($idtype eq 'addcode') {
+            $newid .= &sixnum_code();
+        }
         my $idtries = 0;
         while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
             if ($idtype eq 'concat') {
                 $newid = $id.$idtries;
+            } elsif ($idtype eq 'addcode') {
+                $newid = $newid.&sixnum_code();
             } else {
                 $newid ++;
             }
@@ -5790,6 +6043,7 @@ sub get_timebased_id {
                 $error = 'error saving new item: '.$putresult;
             }
         } else {
+             undef($newid);
              $error = ('error: no unique suffix available for the new item ');
         }
 #  remove lock
@@ -5798,16 +6052,27 @@ sub get_timebased_id {
     } else {
         $error = "error: could not obtain lockfile\n";
         $dellock = 'ok';
+        if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
+            $dellock = 'nolock';
+        }
     }
     return ($newid,$dellock,$error);
 }
 
+sub sixnum_code {
+    my $code;
+    for (0..6) {
+        $code .= int( rand(9) );
+    }
+    return $code;
+}
+
 # -------------------------------------------------- portfolio access checking
 
 sub portfolio_access {
-    my ($requrl) = @_;
+    my ($requrl,$clientip) = @_;
     my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
-    my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
+    my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
     if ($result) {
         my %setters;
         if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
@@ -5833,7 +6098,7 @@ sub portfolio_access {
 }
 
 sub get_portfolio_access {
-    my ($udom,$unum,$file_name,$group,$access_hash) = @_;
+    my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
 
     if (!ref($access_hash)) {
 	my $current_perms = &get_portfile_permissions($udom,$unum);
@@ -5842,7 +6107,7 @@ sub get_portfolio_access {
 	$access_hash = $access_controls{$file_name};
     }
 
-    my ($public,$guest,@domains,@users,@courses,@groups);
+    my ($public,$guest,@domains,@users,@courses,@groups,@ips);
     my $now = time;
     if (ref($access_hash) eq 'HASH') {
         foreach my $key (keys(%{$access_hash})) {
@@ -5866,10 +6131,25 @@ sub get_portfolio_access {
                 push(@courses,$key);
             } elsif ($scope eq 'group') {
                 push(@groups,$key);
+            } elsif ($scope eq 'ip') {
+                push(@ips,$key);
             }
         }
         if ($public) {
             return 'ok';
+        } elsif (@ips > 0) {
+            my $allowed;
+            foreach my $ipkey (@ips) {
+                if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
+                    if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
+                        $allowed = 1;
+                        last; 
+                    }
+                }
+            }
+            if ($allowed) {
+                return 'ok';
+            }
         }
         if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
             if ($guest) {
@@ -6056,6 +6336,7 @@ sub usertools_access {
                       official   => 1,
                       unofficial => 1,
                       community  => 1,
+                      textbook   => 1,
                  );
     } elsif ($context eq 'requestauthor') {
         %tools = (
@@ -6071,7 +6352,7 @@ sub usertools_access {
     }
     return if (!defined($tools{$tool}));
 
-    if ((!defined($udom)) || (!defined($uname))) {
+    if (($udom eq '') || ($uname eq '')) {
         $udom = $env{'user.domain'};
         $uname = $env{'user.name'};
     }
@@ -6352,7 +6633,7 @@ sub customaccess {
 # ------------------------------------------------- Check for a user privilege
 
 sub allowed {
-    my ($priv,$uri,$symb,$role)=@_;
+    my ($priv,$uri,$symb,$role,$clientip)=@_;
     my $ver_orguri=$uri;
     $uri=&deversion($uri);
     my $orguri=$uri;
@@ -6579,9 +6860,9 @@ sub allowed {
 	&& $thisallowed ne 'F' 
 	&& $thisallowed ne '2'
 	&& &is_portfolio_url($uri)) {
-	$thisallowed = &portfolio_access($uri);
+	$thisallowed = &portfolio_access($uri,$clientip);
     }
-    
+
 # Full access at system, domain or course-wide level? Exit.
     if ($thisallowed=~/F/) {
 	return 'F';
@@ -6881,7 +7162,7 @@ sub constructaccess {
     if (($allowed eq 'F') || ($allowed eq 'U')) {
 # Grant temporary access
         my $then=$env{'user.login.time'};
-        my $update==$env{'user.update.time'};
+        my $update=$env{'user.update.time'};
         if (!$update) { $update = $then; }
         my $refresh=$env{'user.refresh.time'};
         if (!$refresh) { $refresh = $update; }
@@ -7162,19 +7443,23 @@ sub definerole {
 # ---------------- Make a metadata query against the network of library servers
 
 sub metadata_query {
-    my ($query,$custom,$customshow,$server_array)=@_;
+    my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
     my %rhash;
     my %libserv = &all_library();
     my @server_list = (defined($server_array) ? @$server_array
                                               : keys(%libserv) );
     for my $server (@server_list) {
+        my $domains = ''; 
+        if (ref($domains_hash) eq 'HASH') {
+            $domains = $domains_hash->{$server}; 
+        }
 	unless ($custom or $customshow) {
-	    my $reply=&reply("querysend:".&escape($query),$server);
+	    my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
 	    $rhash{$server}=$reply;
 	}
 	else {
 	    my $reply=&reply("querysend:".&escape($query).':'.
-			     &escape($custom).':'.&escape($customshow),
+			     &escape($custom).':'.&escape($customshow).':'.&escape($domains),
 			     $server);
 	    $rhash{$server}=$reply;
 	}
@@ -7420,8 +7705,8 @@ sub auto_validate_instcode {
     }
     $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
                         &escape($instcode).':'.&escape($owner),$homeserver));
-    my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
-    return ($outcome,$description);
+    my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
+    return ($outcome,$description,$defaultcredits);
 }
 
 sub auto_create_password {
@@ -7663,17 +7948,20 @@ sub auto_courserequest_checks {
 }
 
 sub auto_courserequest_validation {
-    my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
+    my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
     my ($homeserver,$response);
     if ($dom =~ /^$match_domain$/) {
         $homeserver = &domain($dom,'primary');
     }
-    unless ($homeserver eq 'no_host') {  
-          
+    unless ($homeserver eq 'no_host') {
+        my $customdata;
+        if (ref($custominfo) eq 'HASH') {
+            $customdata = &freeze_escape($custominfo);
+        }
         $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
                                     ':'.&escape($crstype).':'.&escape($inststatuslist).
-                                    ':'.&escape($instcode).':'.&escape($instseclist),
-                                    $homeserver));
+                                    ':'.&escape($instcode).':'.&escape($instseclist).':'.
+                                    $customdata,$homeserver));
     }
     return $response;
 }
@@ -7692,6 +7980,35 @@ sub auto_validate_class_sec {
     return $response;
 }
 
+sub auto_crsreq_update {
+    my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
+        $code,$accessstart,$accessend,$inbound) = @_;
+    my ($homeserver,%crsreqresponse);
+    if ($cdom =~ /^$match_domain$/) {
+        $homeserver = &domain($cdom,'primary');
+    }
+    unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
+        my $info;
+        if (ref($inbound) eq 'HASH') {
+            $info = &freeze_escape($inbound);
+        }
+        my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
+                            ':'.&escape($action).':'.&escape($ownername).':'.
+                            &escape($ownerdomain).':'.&escape($fullname).':'.
+                            &escape($title).':'.&escape($code).':'.
+                            &escape($accessstart).':'.&escape($accessend).':'.$info,
+                            $homeserver);
+        unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
+            my @items = split(/&/,$response);
+            foreach my $item (@items) {
+                my ($key,$value) = split('=',$item);
+                $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
+            }
+        }
+    }
+    return \%crsreqresponse;
+}
+
 # ------------------------------------------------------- Course Group routines
 
 sub get_coursegroups {
@@ -8361,7 +8678,7 @@ sub modifyuser {
 sub modifystudent {
     my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
         $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
-        $selfenroll,$context,$inststatus)=@_;
+        $selfenroll,$context,$inststatus,$credits)=@_;
     if (!$cid) {
 	unless ($cid=$env{'request.course.id'}) {
 	    return 'not_in_class';
@@ -8373,15 +8690,17 @@ sub modifystudent {
          $desiredhome,$email,$inststatus);
     unless ($reply eq 'ok') { return $reply; }
     # This will cause &modify_student_enrollment to get the uid from the
-    # students environment
+    # student's environment
     $uid = undef if (!$forceid);
     $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
-					$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
+                                        $gene,$usec,$end,$start,$type,$locktype,
+                                        $cid,$selfenroll,$context,$credits);
     return $reply;
 }
 
 sub modify_student_enrollment {
-    my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
+    my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
+        $locktype,$cid,$selfenroll,$context,$credits) = @_;
     my ($cdom,$cnum,$chome);
     if (!$cid) {
 	unless ($cid=$env{'request.course.id'}) {
@@ -8428,7 +8747,7 @@ sub modify_student_enrollment {
     my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
     my $reply=cput('classlist',
 		   {$user => 
-			join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype) },
+			join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
 		   $cdom,$cnum);
     if (($reply eq 'ok') || ($reply eq 'delayed')) {
         &devalidate_getsection_cache($udom,$uname,$cid);
@@ -8657,7 +8976,7 @@ sub is_course {
     my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
         '.');
 
-    return unless exists($courses{$cdom.'_'.$cnum});
+    return unless(exists($courses{$cdom.'_'.$cnum}));
     return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
 }
 
@@ -8682,6 +9001,9 @@ sub store_userdata {
                     $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
                 }
                 $namevalue=~s/\&$//;
+                unless ($namespace eq 'courserequests') {
+                    $datakey = &escape($datakey);
+                }
                 $result =  &reply("store:$udom:$uname:$namespace:$datakey:".
                                   $namevalue,$uhome);
             }
@@ -8853,6 +9175,90 @@ sub files_not_in_path {
     return (@return_files);
 }
 
+#------------------------------Submitted/Handedback Portfolio Files Versioning
+ 
+sub portfiles_versioning {
+    my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
+    my $portfolio_root = '/userfiles/portfolio';
+    return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
+    foreach my $file (@{$portfiles}) {
+        &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
+        my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
+        my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
+        my $getpropath = 1;
+        my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
+                                             $stu_name,$getpropath);
+        my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
+        my $new_answer = 
+            &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
+        if ($new_answer ne 'problem getting file') {
+            push(@{$versioned_portfiles}, $directory.$new_answer);
+            &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
+                              [$symb,$env{'request.course.id'},'graded']);
+        }
+    }
+}
+
+sub get_next_version {
+    my ($answer_name, $answer_ext, $dir_list) = @_;
+    my $version;
+    if (ref($dir_list) eq 'ARRAY') {
+        foreach my $row (@{$dir_list}) {
+            my ($file) = split(/\&/,$row,2);
+            my ($file_name,$file_version,$file_ext) =
+                &file_name_version_ext($file);
+            if (($file_name eq $answer_name) &&
+                ($file_ext eq $answer_ext)) {
+                     # gets here if filename and extension match,
+                     # regardless of version
+                if ($file_version ne '') {
+                    # a versioned file is found  so save it for later
+                    if ($file_version > $version) {
+                        $version = $file_version;
+                    }
+                }
+            }
+        }
+    }
+    $version ++;
+    return($version);
+}
+
+sub version_selected_portfile {
+    my ($domain,$stu_name,$directory,$file_name,$version) = @_;
+    my ($answer_name,$answer_ver,$answer_ext) =
+        &file_name_version_ext($file_name);
+    my $new_answer;
+    $env{'form.copy'} =
+        &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
+    if($env{'form.copy'} eq '-1') {
+        $new_answer = 'problem getting file';
+    } else {
+        $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
+        my $copy_result = 
+            &finishuserfileupload($stu_name,$domain,'copy',
+                                  '/portfolio'.$directory.$new_answer);
+    }
+    undef($env{'form.copy'});
+    return ($new_answer);
+}
+
+sub file_name_version_ext {
+    my ($file)=@_;
+    my @file_parts = split(/\./, $file);
+    my ($name,$version,$ext);
+    if (@file_parts > 1) {
+        $ext=pop(@file_parts);
+        if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
+            $version=pop(@file_parts);
+        }
+        $name=join('.',@file_parts);
+    } else {
+        $name=join('.',@file_parts);
+    }
+    return($name,$version,$ext);
+}
+
 #----------------------------------------------Get portfolio file permissions
 
 sub get_portfile_permissions {
@@ -8997,49 +9403,132 @@ sub modify_access_controls {
 }
 
 sub make_public_indefinitely {
-    my ($requrl) = @_;
+    my (@requrl) = @_;
+    return &automated_portfile_access('public',\@requrl);
+}
+
+sub automated_portfile_access {
+    my ($accesstype,$addsref,$delsref,$info) = @_;
+    unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
+        return 'invalid';
+    }
+    my %urls;
+    if (ref($addsref) eq 'ARRAY') {
+        foreach my $requrl (@{$addsref}) {
+            if (&is_portfolio_url($requrl)) {
+                unless (exists($urls{$requrl})) {
+                    $urls{$requrl} = 'add';
+                }
+            }
+        }
+    }
+    if (ref($delsref) eq 'ARRAY') {
+        foreach my $requrl (@{$delsref}) { 
+            if (&is_portfolio_url($requrl)) {
+                unless (exists($urls{$requrl})) {
+                    $urls{$requrl} = 'delete'; 
+                }
+            }
+        }
+    }
+    unless (keys(%urls)) {
+        return 'invalid';
+    }
+    my $ip;
+    if ($accesstype eq 'ip') {
+        if (ref($info) eq 'HASH') {
+            if ($info->{'ip'} ne '') {
+                $ip = $info->{'ip'};
+            }
+        }
+        if ($ip eq '') {
+            return 'invalid';
+        }
+    }
+    my $errors;
     my $now = time;
-    my $action = 'activate';
-    my $aclnum = 0;
-    if (&is_portfolio_url($requrl)) {
+    my %current_perms;
+    foreach my $requrl (sort(keys(%urls))) {
+        my $action;
+        if ($urls{$requrl} eq 'add') {
+            $action = 'activate';
+        } else {
+            $action = 'none';
+        }
+        my $aclnum = 0;
         my (undef,$udom,$unum,$file_name,$group) =
             &parse_portfolio_url($requrl);
-        my $current_perms = &get_portfile_permissions($udom,$unum);
-        my %access_controls = &get_access_controls($current_perms,
+        unless (exists($current_perms{$unum.':'.$udom})) {
+            $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
+        }
+        my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
                                                    $group,$file_name);
         foreach my $key (keys(%{$access_controls{$file_name}})) {
             my ($num,$scope,$end,$start) = 
                 ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
-            if ($scope eq 'public') {
-                if ($start <= $now && $end == 0) {
-                    $action = 'none';
-                } else {
+            if ($scope eq $accesstype) {
+                if (($start <= $now) && ($end == 0)) {
+                    if ($accesstype eq 'ip') {
+                        if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
+                            if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
+                                if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
+                                    if ($urls{$requrl} eq 'add') {
+                                        $action = 'none';
+                                        last;
+                                    } else {
+                                        $action = 'delete';
+                                        $aclnum = $num;
+                                        last;
+                                    }
+                                }
+                            }
+                        }
+                    } elsif ($accesstype eq 'public') {
+                        if ($urls{$requrl} eq 'add') {
+                            $action = 'none';
+                            last;
+                        } else {
+                            $action = 'delete';
+                            $aclnum = $num;
+                            last;
+                        }
+                    }
+                } elsif ($accesstype eq 'public') {
                     $action = 'update';
                     $aclnum = $num;
+                    last;
                 }
-                last;
             }
         }
         if ($action eq 'none') {
-             return 'ok';
+            next;
         } else {
             my %changes;
             my $newend = 0;
             my $newstart = $now;
-            my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
+            my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
             $changes{$action}{$newkey} = {
-                type => 'public',
+                type => $accesstype,
                 time => {
                     start => $newstart,
                     end   => $newend,
                 },
             };
+            if ($accesstype eq 'ip') {
+                $changes{$action}{$newkey}{'ip'} = [$ip];
+            }
             my ($outcome,$deloutcome,$new_values,$translation) =
                 &modify_access_controls($file_name,\%changes,$udom,$unum);
-            return $outcome;
+            unless ($outcome eq 'ok') {
+                $errors .= $outcome.' ';
+            }
         }
+    }
+    if ($errors) {
+        $errors =~ s/\s$//;
+        return $errors;
     } else {
-        return 'invalid';
+        return 'ok';
     }
 }
 
@@ -9504,6 +9993,26 @@ sub resdata {
     return undef;
 }
 
+sub get_numsuppfiles {
+    my ($cnum,$cdom,$ignorecache)=@_;
+    my $hashid=$cnum.':'.$cdom;
+    my ($suppcount,$cached);
+    unless ($ignorecache) {
+        ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
+    }
+    unless (defined($cached)) {
+        my $chome=&homeserver($cnum,$cdom);
+        unless ($chome eq 'no_host') {
+            ($suppcount,my $errors) = (0,0);
+            my $suppmap = 'supplemental.sequence';
+            ($suppcount,$errors) = 
+                &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
+        }
+        &do_cache_new('suppcount',$hashid,$suppcount,600);
+    }
+    return $suppcount;
+}
+
 #
 # EXT resource caching routines
 #
@@ -9532,7 +10041,7 @@ sub EXT_cache_set {
 # --------------------------------------------------------- Value of a Variable
 sub EXT {
 
-    my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
+    my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
     unless ($varname) { return ''; }
     #get real user name/domain, courseid and symb
     my $courseid;
@@ -9647,26 +10156,51 @@ sub EXT {
 	    if (!$symbparm) { $symbparm=&symbread(); }
 	}
 
-	if ($space eq 'title') {
-	    if (!$symbparm) { $symbparm = $env{'request.filename'}; }
-	    return &gettitle($symbparm);
-	}
+        if ($qualifier eq '') {
+	    if ($space eq 'title') {
+	        if (!$symbparm) { $symbparm = $env{'request.filename'}; }
+	        return &gettitle($symbparm);
+	    }
 	
-	if ($space eq 'map') {
-	    my ($map) = &decode_symb($symbparm);
-	    return &symbread($map);
-	}
-	if ($space eq 'filename') {
-	    if ($symbparm) {
-		return &clutter((&decode_symb($symbparm))[2]);
+	    if ($space eq 'map') {
+	        my ($map) = &decode_symb($symbparm);
+	        return &symbread($map);
+	    }
+            if ($space eq 'maptitle') {
+                my ($map) = &decode_symb($symbparm);
+                return &gettitle($map);
+            }
+	    if ($space eq 'filename') {
+	        if ($symbparm) {
+		    return &clutter((&decode_symb($symbparm))[2]);
+	        }
+	        return &hreflocation('',$env{'request.filename'});
 	    }
-	    return &hreflocation('',$env{'request.filename'});
-	}
+
+            if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
+                if ($space eq 'visibleparts') {
+                    my $navmap = Apache::lonnavmaps::navmap->new();
+                    my $item;
+                    if (ref($navmap)) {
+                        my $res = $navmap->getBySymb($symbparm);
+                        my $parts = $res->parts();
+                        if (ref($parts) eq 'ARRAY') {
+                            $item = join(',',@{$parts});
+                        }
+                        undef($navmap);
+                    }
+                    return $item;
+                }
+            }
+        }
 
 	my ($section, $group, @groups);
 	my ($courselevelm,$courselevel);
-	if ($symbparm && defined($courseid) && 
-	    $courseid eq $env{'request.course.id'}) {
+        if (($courseid eq '') && ($cid)) {
+            $courseid = $cid;
+        }
+	if (($symbparm && $courseid) && 
+	    (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid)))  {
 
 	    #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
 
@@ -9913,11 +10447,11 @@ sub metadata {
     # if it is a non metadata possible uri return quickly
     if (($uri eq '') || 
 	(($uri =~ m|^/*adm/|) && 
-	     ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
+	     ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard)$})) ||
         ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
 	return undef;
     }
-    if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) 
+    if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv}) 
 	&& &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
 	return undef;
     }
@@ -10178,7 +10712,7 @@ sub metadata {
 
 	$metaentry{':keys'} = join(',',keys(%metathesekeys));
 	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
-	$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
+	$metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
 	&do_cache_new('meta',$uri,\%metaentry,$cachetime);
 # this is the end of "was not already recently cached
     }
@@ -10291,72 +10825,6 @@ sub gettitle {
     return $title;
 }
 
-sub getdocspath {
-    my ($symb) = @_;
-    my $path;
-    if ($symb) {
-        my ($mapurl,$id,$resurl) = &decode_symb($symb);
-        if ($resurl=~/\.(sequence|page)$/) {
-            $mapurl=$resurl;
-        } elsif ($resurl eq 'adm/navmaps') {
-            $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'};
-        }
-        my $mapresobj;
-        my $navmap = Apache::lonnavmaps::navmap->new();
-        if (ref($navmap)) {
-            $mapresobj = $navmap->getResourceByUrl($mapurl);
-        }
-        $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1};
-        my $type=$2;
-        if (ref($mapresobj)) {
-            my $pcslist = $mapresobj->map_hierarchy();
-            if ($pcslist ne '') {
-                foreach my $pc (split(/,/,$pcslist)) {
-                    next if ($pc <= 1);
-                    my $res = $navmap->getByMapPc($pc);
-                    if (ref($res)) {
-                        my $thisurl = $res->src();
-                        $thisurl=~s{^.*/([^/]+)\.\w+$}{$1};
-                        my $thistitle = $res->title();
-                        $path .= '&'.
-                                 &Apache::lonhtmlcommon::entity_encode($thisurl).'&'.
-                                 &Apache::lonhtmlcommon::entity_encode($thistitle).
-                                 ':'.$res->randompick().
-                                 ':'.$res->randomout().
-                                 ':'.$res->encrypted().
-                                 ':'.$res->randomorder();
-                    }
-                }
-            }
-            $path =~ s/^\&//;
-            my $maptitle = $mapresobj->title();
-            if ($mapurl eq 'default') {
-                $maptitle = 'Main Course Documents';
-            }
-            $path .= ($path ne '')? '&' : ''.
-                    &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
-                    &Apache::lonhtmlcommon::entity_encode($maptitle).
-                    ':'.$mapresobj->randompick().
-                    ':'.$mapresobj->randomout().
-                    ':'.$mapresobj->encrypted().
-                    ':'.$mapresobj->randomorder();
-        } else {
-            my $maptitle = &gettitle($mapurl);
-            if ($mapurl eq 'default') {
-                $maptitle = 'Main Course Documents';
-            }
-            $path = &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
-                    &Apache::lonhtmlcommon::entity_encode($maptitle).'::::';
-        }
-        unless ($mapurl eq 'default') {
-            $path = 'default&'.
-                    &Apache::lonhtmlcommon::entity_encode('Main Course Documents').
-                    '::::&'.$path;
-        }
-    }
-    return $path;
-}
-
 sub get_slot {
     my ($which,$cnum,$cdom)=@_;
     if (!$cnum || !$cdom) {
@@ -10410,7 +10878,7 @@ sub get_course_slots {
         my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
         my ($tmp) = keys(%slots);
         if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
-            &Apache::lonnet::do_cache_new('allslots',$hashid,\%slots,600);
+            &do_cache_new('allslots',$hashid,\%slots,600);
             return %slots;
         }
     }
@@ -10504,10 +10972,21 @@ sub symbverify {
 
     if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
                             &GDBM_READER(),0640)) {
+        my $noclutter;
         if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
             $thisurl =~ s/\?.+$//;
+            if ($map =~ m{^uploaded/.+\.page$}) {
+                $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
+                $thisurl =~ s{^\Qhttp://https://\E}{https://};
+                $noclutter = 1;
+            }
+        }
+        my $ids;
+        if ($noclutter) {
+            $ids=$bighash{'ids_'.$thisurl};
+        } else {
+            $ids=$bighash{'ids_'.&clutter($thisurl)};
         }
-        my $ids=$bighash{'ids_'.&clutter($thisurl)};
         unless ($ids) {
             my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;  
             $ids=$bighash{$idkey};
@@ -10606,11 +11085,7 @@ sub deversion {
 sub symbread {
     my ($thisfn,$donotrecurse)=@_;
     my $cache_str='request.symbread.cached.'.$thisfn;
-    if (defined($env{$cache_str})) {
-        if (($thisfn) || ($env{$cache_str} ne '')) {
-            return $env{$cache_str};
-        }
-    }
+    if (defined($env{$cache_str})) { return $env{$cache_str}; }
 # no filename provided? try from environment
     unless ($thisfn) {
         if ($env{'request.symb'}) {
@@ -11030,8 +11505,12 @@ sub rndseed_CODE_64bit5 {
 sub setup_random_from_rndseed {
     my ($rndseed)=@_;
     if ($rndseed =~/([,:])/) {
-	my ($num1,$num2)=split(/[,:]/,$rndseed);
-	&Math::Random::random_set_seed(abs($num1),abs($num2));
+        my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
+        if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
+            &Math::Random::random_set_seed_from_phrase($rndseed);
+        } else {
+            &Math::Random::random_set_seed($num1,$num2);
+        }
     } else {
 	&Math::Random::random_set_seed_from_phrase($rndseed);
     }
@@ -11422,7 +11901,9 @@ sub default_login_domain {
 sub declutter {
     my $thisfn=shift;
     if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
-    $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
+    unless ($thisfn=~m{^/home/httpd/html/priv/}) {
+        $thisfn=~s{^/home/httpd/html}{};
+    }
     $thisfn=~s/^\///;
     $thisfn=~s|^adm/wrapper/||;
     $thisfn=~s|^adm/coursedocs/showdoc/||;
@@ -11527,12 +12008,12 @@ sub goodbye {
 }
 
 sub get_dns {
-    my ($url,$func,$ignore_cache) = @_;
+    my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
     if (!$ignore_cache) {
 	my ($content,$cached)=
 	    &Apache::lonnet::is_cached_new('dns',$url);
 	if ($cached) {
-	    &$func($content);
+	    &$func($content,$hashref);
 	    return;
 	}
     }
@@ -11549,7 +12030,7 @@ sub get_dns {
 	$alldns{$host} = $protocol;
     }
     while (%alldns) {
-	my ($dns) = keys(%alldns);
+	my ($dns) = sort { $b cmp $a } keys(%alldns);
 	my $ua=new LWP::UserAgent;
         $ua->timeout(30);
 	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
@@ -11557,8 +12038,10 @@ sub get_dns {
         delete($alldns{$dns});
 	next if ($response->is_error());
 	my @content = split("\n",$response->content);
-	&Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
-	&$func(\@content);
+	unless ($nocache) {
+	    &do_cache_new('dns',$url,\@content,30*24*60*60);
+	}
+	&$func(\@content,$hashref);
 	return;
     }
     close($config);
@@ -11566,9 +12049,66 @@ sub get_dns {
     &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
     open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
     my @content = <$config>;
-    &$func(\@content);
+    &$func(\@content,$hashref);
     return;
 }
+
+# ------------------------------------------------------Get DNS checksums file
+sub parse_dns_checksums_tab {
+    my ($lines,$hashref) = @_;
+    my $lonhost = $perlvar{'lonHostID'};
+    my $machine_dom = &Apache::lonnet::host_domain($lonhost);
+    my $loncaparev = &get_server_loncaparev($machine_dom);
+    my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
+    my $webconfdir = '/etc/httpd/conf';
+    if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
+        $webconfdir = '/etc/apache2';
+    } elsif ($distro =~ /^sles(\d+)$/) {
+        if ($1 >= 10) {
+            $webconfdir = '/etc/apache2';
+        }
+    } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
+        if ($1 >= 10.0) {
+            $webconfdir = '/etc/apache2';
+        }
+    }
+    my ($release,$timestamp) = split(/\-/,$loncaparev);
+    my (%chksum,%revnum);
+    if (ref($lines) eq 'ARRAY') {
+        chomp(@{$lines});
+        my $version = shift(@{$lines});
+        if ($version eq $release) {  
+            foreach my $line (@{$lines}) {
+                my ($file,$version,$shasum) = split(/,/,$line);
+                if ($file =~ m{^/etc/httpd/conf}) {
+                    if ($webconfdir eq '/etc/apache2') {
+                        $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
+                    }
+                }
+                $chksum{$file} = $shasum;
+                $revnum{$file} = $version;
+            }
+            if (ref($hashref) eq 'HASH') {
+                %{$hashref} = (
+                                sums     => \%chksum,
+                                versions => \%revnum,
+                              );
+            }
+        }
+    }
+    return;
+}
+
+sub fetch_dns_checksums {
+    my %checksums;
+    my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
+    my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
+    my ($release,$timestamp) = split(/\-/,$loncaparev);
+    &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
+             \%checksums);
+    return \%checksums;
+}
+
 # ------------------------------------------------------------ Read domain file
 {
     my $loaded;
@@ -11878,9 +12418,9 @@ sub get_dns {
 	    }
 	    push(@{$iphost{$ip}},@{$name_to_host{$name}});
 	}
-	&Apache::lonnet::do_cache_new('iphost','iphost',
-				      [\%iphost,\%name_to_ip,\%lonid_to_ip],
-				      48*60*60);
+	&do_cache_new('iphost','iphost',
+		      [\%iphost,\%name_to_ip,\%lonid_to_ip],
+		      48*60*60);
 
 	return %iphost;
     }
@@ -11936,15 +12476,48 @@ sub get_dns {
             }
             $seen{$prim_ip} = 1;
         }
-        return &Apache::lonnet::do_cache_new('internetnames',$lonid,\@idns,12*60*60);
+        return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
     }
 
 }
 
 sub all_loncaparevs {
-    return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10);
+    return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
+}
+
+# ---------------------------------------------------------- Read loncaparev table
+{
+    sub load_loncaparevs { 
+        if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
+            if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
+                while (my $configline=<$config>) {
+                    chomp($configline);
+                    my ($hostid,$loncaparev)=split(/:/,$configline);
+                    $loncaparevs{$hostid}=$loncaparev;
+                }
+                close($config);
+            }
+        }
+    }
+}
+
+# ---------------------------------------------------------- Read serverhostID table
+{
+    sub load_serverhomeIDs {
+        if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
+            if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
+                while (my $configline=<$config>) {
+                    chomp($configline);
+                    my ($name,$id)=split(/:/,$configline);
+                    $serverhomeIDs{$name}=$id;
+                }
+                close($config);
+            }
+        }
+    }
 }
 
+
 BEGIN {
 
 # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
@@ -12021,33 +12594,14 @@ BEGIN {
 }
 
 # ---------------------------------------------------------- Read loncaparev table
-{
-    if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
-        if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
-            while (my $configline=<$config>) {
-                chomp($configline);
-                my ($hostid,$loncaparev)=split(/:/,$configline);
-                $loncaparevs{$hostid}=$loncaparev;
-            }
-            close($config);
-        }
-    }
-}
+
+&load_loncaparevs();
 
 # ---------------------------------------------------------- Read serverhostID table
-{
-    if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
-        if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
-            while (my $configline=<$config>) {
-                chomp($configline);
-                my ($name,$id)=split(/:/,$configline);
-                $serverhomeIDs{$name}=$id;
-            }
-            close($config);
-        }
-    }
-}
 
+&load_serverhomeIDs();
+
+# ---------------------------------------------------------- Read releaseslist XML
 {
     my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
     if (-e $file) {
@@ -12246,8 +12800,8 @@ were new keys. I.E. 1:foo will become 1:
 
 Calling convention:
 
- my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname,$home);
- &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$home);
+ my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
+ &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
 
 For more detailed information, see lonnet specific documentation.
 
@@ -12424,7 +12978,7 @@ environment).  If no custom name is defi
    
 =item *
 
-get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
+get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
 All arguments are optional. Returns a hash of a roles, either for
 co-author/assistant author roles for a user's Construction Space
 (default), or if $context is 'userroles', roles for the user himself,
@@ -12447,7 +13001,31 @@ Additional optional arguments are: $type
 to certain user status types -- previous (expired roles), active (currently
 available roles) or future (roles available in the future), and
 $hideprivileged -- if true will not report course roles for users who
-have active Domain Coordinator or Super User roles.
+have active Domain Coordinator role in course's domain or in additional
+domains (specified in 'Domains to check for privileged users' in course
+environment -- set via:  Course Settings -> Classlists and staff listing).
+
+=item *
+
+privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
+$username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
+$possdomains and $possroles are optional array refs -- to domains to check and
+roles to check.  If $possdomains is not specified, a dump will be done of the
+users' roles.db to check for a dc or su role in any domain. This can be
+time consuming if &privileged is called repeatedly (e.g., when displaying a
+classlist), so in such cases, supplying a $possdomains array is preferred, as
+this then allows &privileged_by_domain() to be used, which caches the identity
+of privileged users, eliminating the need for repeated calls to &dump().
+
+=item *
+
+privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
+where the outer hash keys are domains specified in the $possdomains array ref,
+next inner hash keys are privileged roles specified in the $roles array ref,
+and the innermost hash contains key = value pairs for username:domain = end:start
+for active or future "privileged" users with that role in that domain. To avoid
+repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
+innerhash are cached using priv_$role and $dom as the identifiers.
 
 =back
 
@@ -12490,8 +13068,8 @@ or when Autoupdate.pl is run by cron in
 modifystudent
 
 modify a student's enrollment and identification information.
-The course id is resolved based on the current users environment.  
-This means the envoking user must be a course coordinator or otherwise
+The course id is resolved based on the current user's environment.  
+This means the invoking user must be a course coordinator or otherwise
 associated with a course.
 
 This call is essentially a wrapper for lonnet::modifyuser and
@@ -12541,7 +13119,9 @@ Inputs:
 
 =item B<$context> role change context (shown in User Management Logs display in a course)
 
-=item B<$inststatus> institutional status of user - : separated string of escaped status types  
+=item B<$inststatus> institutional status of user - : separated string of escaped status types
+
+=item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
 
 =back
 
@@ -12549,20 +13129,20 @@ Inputs:
 
 modify_student_enrollment
 
-Change a students enrollment status in a class.  The environment variable
+Change a student's enrollment status in a class.  The environment variable
 'role.request.course' must be defined for this function to proceed.
 
 Inputs:
 
 =over 4
 
-=item $udom, students domain
+=item $udom, student's domain
 
-=item $uname, students name
+=item $uname, student's name
 
-=item $uid, students user id
+=item $uid, student's user id
 
-=item $first, students first name
+=item $first, student's first name
 
 =item $middle
 
@@ -12586,6 +13166,8 @@ Inputs:
 
 =item $context
 
+=item $credits, number of credits student will earn from this class
+
 =back
 
 
@@ -12642,7 +13224,7 @@ If defined, the supplied username is use
 resdata($name,$domain,$type,@which) : request for current parameter
 setting for a specific $type, where $type is either 'course' or 'user',
 @what should be a list of parameters to ask about. This routine caches
-answers for 5 minutes.
+answers for 10 minutes.
 
 =item *
 
@@ -12651,6 +13233,10 @@ data base, returning a hash that is keye
 values that are the resource value.  I believe that the timestamps and
 versions are also returned.
 
+get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
+supplemental content area. This routine caches the number of files for 
+10 minutes.
+
 =back
 
 =head2 Course Modification
@@ -12710,10 +13296,15 @@ resource. Expects the local filesystem p
 
 =item *
 
-EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
-a vairety of different possible values, $varname should be a request
-string, and the other parameters can be used to specify who and what
-one is asking about.
+EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates 
+and returns the value of a variety of different possible values,
+$varname should be a request string, and the other parameters can be
+used to specify who and what one is asking about. Ordinarily, $cid 
+does not need to be specified, as it is retrived from 
+$env{'request.course.id'}, but &Apache::lonnet::EXT() is called
+within lonuserstate::loadmap() when initializing a course, before
+$env{'request.course.id'} has been set, so it needs to be provided
+in that one case.
 
 Possible values for $varname are environment.lastname (or other item
 from the envirnment hash), user.name (or someother aspect about the
@@ -12847,15 +13438,21 @@ homeserver.
 
 =item *
 
-store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
-for this url; hashref needs to be given and should be a \%hashname; the
-remaining args aren't required and if they aren't passed or are '' they will
-be derived from the env
+store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
+permanently for this url; hashref needs to be given and should be a \%hashname;
+the remaining args aren't required and if they aren't passed or are '' they will
+be derived from the env (with the exception of $laststore, which is an 
+optional arg used when a user's submission is stored in grading).
+$laststore is $version=$timestamp, where $version is the most recent version
+number retrieved for the corresponding $symb in the $namespace db file, and
+$timestamp is the timestamp for that transaction (UNIX time).
+$laststore is currently only passed when cstore() is called by 
+structuretags::finalize_storage().
 
 =item *
 
-cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
-uses critical subroutine
+cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
+but uses critical subroutine
 
 =item *
 
@@ -12878,10 +13475,11 @@ $range should be either an integer '100'
 
 =item *
 
-putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
+putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
 replaces a &store() version of data with a replacement set of data
 for a particular resource in a namespace passed in the $storehash hash 
-reference
+reference. If $tolog is true, the transaction is logged in the courselog
+with an action=PUTSTORE.
 
 =item *
 
@@ -12991,15 +13589,91 @@ server ($udom and $uhome are optional)
 
 =item * 
 
-get_domain_defaults($target_domain) : returns hash with defaults for
-authentication and language in the domain. Keys are: auth_def, auth_arg_def,
-lang_def; corresponsing values are authentication type (internal, krb4, krb5,
-or localauth), initial password or a kerberos realm, language (e.g., en-us).
-Values are retrieved from cache (if current), or from domain's configuration.db
-(if available), or lastly from values in lonTabs/dns_domain,tab, 
-or lonTabs/domain.tab. 
+get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults 
+for: authentication, language, quotas, timezone, date locale, and portal URL in
+the target domain.
+
+May also include additional key => value pairs for the following groups:
+
+=over
+
+=item
+disk quotas (MB allocated by default to portfolios and authoring spaces).
+
+=over
+
+=item defaultquota, authorquota
+
+=back
+
+=item
+tools (availability of aboutme page, blog, webDAV access for authoring spaces,
+portfolio for users).
+
+=over
+
+=item
+aboutme, blog, webdav, portfolio
+
+=back
+
+=item
+requestcourses: ability to request courses, and how requests are processed.
+
+=over
+
+=item
+official, unofficial, community, textbook
+
+=back
+
+=item
+inststatus: types of institutional affiliation, and order in which they are displayed.
+
+=over
+
+=item
+inststatustypes, inststatusorder, inststatusguest
+
+=back
+
+=item
+coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
+for course's uploaded content.
+
+=over
+
+=item
+canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota, 
+communityquota, textbookquota
+
+=back
+
+=item
+usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
+on your servers.
+
+=over
+
+=item 
+remotesessions, hostedsessions
+
+=back
+
+=back
+
+In cases where a domain coordinator has never used the "Set Domain Configuration"
+utility to create a configuration.db file on a domain's primary library server 
+only the following domain defaults: auth_def, auth_arg_def, lang_def
+-- corresponding values are authentication type (internal, krb4, krb5,
+or localauth), initial password or a kerberos realm, language (e.g., en-us) -- 
+will be available. Values are retrieved from cache (if current), unless the
+optional $ignore_cache arg is true, or from domain's configuration.db (if available),
+or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
+
+Typical usage:
 
-%domdefaults = &get_auth_defaults($target_domain);
+%domdefaults = &get_domain_defaults($target_domain);
 
 =back
 
@@ -13224,7 +13898,8 @@ filelocation except for hrefs
 
 =item *
 
-declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
+declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
+also removes beginning /home/httpd/html unless /priv/ follows it.
 
 =back