--- loncom/lonnet/perl/lonnet.pm	2016/10/23 12:21:47	1.1172.2.84
+++ loncom/lonnet/perl/lonnet.pm	2013/08/04 02:55:41	1.1233
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1172.2.84 2016/10/23 12:21:47 raeburn Exp $
+# $Id: lonnet.pm,v 1.1233 2013/08/04 02:55:41 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -75,7 +75,10 @@ use LWP::UserAgent();
 use HTTP::Date;
 use Image::Magick;
 
-use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
+
+use Encode;
+
+use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $apache
             $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
             %managerstab);
 
@@ -89,7 +92,7 @@ use GDBM_File;
 use HTML::LCParser;
 use Fcntl qw(:flock);
 use Storable qw(thaw nfreeze);
-use Time::HiRes qw( sleep gettimeofday tv_interval );
+use Time::HiRes qw( gettimeofday tv_interval );
 use Cache::Memcached;
 use Digest::MD5;
 use Math::Random;
@@ -102,13 +105,14 @@ use LONCAPA::Lond;
 use File::Copy;
 
 my $readit;
-my $max_connection_retries = 20;     # Or some such value.
+my $max_connection_retries = 10;     # Or some such value.
 
 require Exporter;
 
 our @ISA = qw (Exporter);
 our @EXPORT = qw(%env);
 
+
 # ------------------------------------ Logging (parameters, docs, slots, roles)
 {
     my $logid;
@@ -123,19 +127,19 @@ our @EXPORT = qw(%env);
 	$logid ++;
         my $now = time();
 	my $id=$now.'00000'.$$.'00000'.$logid;
-        my $logentry = {
-                         $id => {
-                                  'exe_uname' => $env{'user.name'},
-                                  'exe_udom'  => $env{'user.domain'},
-                                  'exe_time'  => $now,
-                                  'exe_ip'    => $ENV{'REMOTE_ADDR'},
-                                  'delflag'   => $delflag,
-                                  'logentry'  => $storehash,
-                                  'uname'     => $uname,
-                                  'udom'      => $udom,
-                                }
+        my $logentry = { 
+                          $id => {
+                                   'exe_uname' => $env{'user.name'},
+                                   'exe_udom'  => $env{'user.domain'},
+                                   'exe_time'  => $now,
+                                   'exe_ip'    => $ENV{'REMOTE_ADDR'},
+                                   'delflag'   => $delflag,
+                                   'logentry'  => $storehash,
+                                   'uname'     => $uname,
+                                   'udom'      => $udom,
+                                  }
                        };
-        return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
+	return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
     }
 }
 
@@ -352,11 +356,9 @@ sub get_remote_globals {
 }
 
 sub remote_devalidate_cache {
-    my ($lonhost,$cachekeys) = @_;
-    my $items;
-    return unless (ref($cachekeys) eq 'ARRAY');
-    my $cachestr = join('&',@{$cachekeys});
-    return &reply('devalidatecache:'.&escape($cachestr),$lonhost);
+    my ($lonhost,$name,$id) = @_;
+    my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
+    return $response;
 }
 
 # -------------------------------------------------- Non-critical communication
@@ -370,7 +372,7 @@ sub subreply {
 
     my $lockfile=$peerfile.".lock";
     while (-e $lockfile) {	# Need to wait for the lockfile to disappear.
-	sleep(0.1);
+	sleep(1);
     }
     # At this point, either a loncnew parent is listening or an old lonc
     # or loncnew child is listening so we can connect or everything's dead.
@@ -388,7 +390,7 @@ sub subreply {
 	} else {
 	    &create_connection(&hostname($server),$server);
 	}
-        sleep(0.1);		# Try again later if failed connection.
+        sleep(1);		# Try again later if failed connection.
     }
     my $answer;
     if ($client) {
@@ -417,8 +419,8 @@ sub reply {
 
 sub reconlonc {
     my ($lonid) = @_;
+    my $hostname = &hostname($lonid);
     if ($lonid) {
-        my $hostname = &hostname($lonid);
 	my $peerfile="$perlvar{'lonSockDir'}/$hostname";
 	if ($hostname && -e $peerfile) {
 	    &logthis("Trying to reconnect lonc for $lonid ($hostname)");
@@ -464,7 +466,7 @@ sub critical {
     }
     my $answer=reply($cmd,$server);
     if ($answer eq 'con_lost') {
-	&reconlonc($server);
+	&reconlonc("$perlvar{'lonSockDir'}/$server");
 	my $answer=reply($cmd,$server);
         if ($answer eq 'con_lost') {
             my $now=time;
@@ -481,7 +483,7 @@ sub critical {
 		    close($dfh);
 		}
             }
-            sleep 1;
+            sleep 2;
             my $wcmd='';
             {
 		my $dfh;
@@ -601,7 +603,7 @@ sub transfer_profile_to_env {
 
 # ---------------------------------------------------- Check for valid session 
 sub check_for_valid_session {
-    my ($r,$name,$userhashref) = @_;
+    my ($r,$name) = @_;
     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
     if ($name eq '') {
         $name = 'lonID';
@@ -632,12 +634,13 @@ sub check_for_valid_session {
 	|| !defined($disk_env{'user.domain'})) {
 	return undef;
     }
-
-    if (ref($userhashref) eq 'HASH') {
-        $userhashref->{'name'} = $disk_env{'user.name'};
-        $userhashref->{'domain'} = $disk_env{'user.domain'};
+    if (($r->user() eq '') && ($apache >= 2.4)) {
+        if ($disk_env{'user.domain'} eq $r->dir_config('lonDefDomain')) {
+            $r->user($disk_env{'user.name'});
+        } else {
+            $r->user($disk_env{'user.name'}.':'.$disk_env{'user.domain'});
+        }
     }
-
     return $handle;
 }
 
@@ -671,7 +674,7 @@ sub appenv {
 	    if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
                 $refused = 1;
                 if (ref($roles) eq 'ARRAY') {
-                    my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
+                    my ($type,$role) = ($key =~ /^user\.(role|priv)\.([^.]+)\./);
                     if (grep(/^\Q$role\E$/,@{$roles})) {
                         $refused = 0;
                     }
@@ -844,8 +847,10 @@ sub spareserver {
     if (ref($spareshash) eq 'HASH') {
         if (ref($spareshash->{'primary'}) eq 'ARRAY') {
             foreach my $try_server (@{ $spareshash->{'primary'} }) {
-                next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
-                                             $try_server));
+                if ($uint_dom) {
+                    next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
+                                                 $try_server));
+                }
 	        ($spare_server, $lowest_load) =
 	            &compare_server_load($try_server, $spare_server, $lowest_load);
             }
@@ -856,8 +861,10 @@ sub spareserver {
         if (!$found_server) {
             if (ref($spareshash->{'default'}) eq 'ARRAY') { 
 	        foreach my $try_server (@{ $spareshash->{'default'} }) {
-                    next unless (&spare_can_host($udom,$uint_dom,
-                                                 $remotesessions,$try_server));
+                    if ($uint_dom) {
+                        next unless (&spare_can_host($udom,$uint_dom,
+                                                     $remotesessions,$try_server));
+                    }
 	            ($spare_server, $lowest_load) =
 		        &compare_server_load($try_server, $spare_server, $lowest_load);
                 }
@@ -881,17 +888,7 @@ sub spareserver {
 }
 
 sub compare_server_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,$lowest_load);
-        }
-    }
+    my ($try_server, $spare_server, $lowest_load) = @_;
 
     my $loadans     = &reply('load',    $try_server);
     my $userloadans = &reply('userload',$try_server);
@@ -952,43 +949,26 @@ sub has_user_session {
 # --------- determine least loaded server in a user's domain which allows login
 
 sub choose_server {
-    my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
+    my ($udom,$checkloginvia) = @_;
     my %domconfhash = &Apache::loncommon::get_domainconf($udom);
     my %servers = &get_servers($udom);
     my $lowest_load = 30000;
-    my ($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'},
-                                           $cachetime);
-            }
-        }
-    }
+    my ($login_host,$hostname,$portal_path,$isredirect);
     foreach my $lonhost (keys(%servers)) {
         my $loginvia;
-        if ($skiploadbal) {
-            if (ref($balancers) eq 'HASH') {
-                next if (exists($balancers->{$lonhost}));
-            }
-        }
         if ($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, $required);
+                    &compare_server_load($server, $login_host, $lowest_load);
                 if ($login_host eq $server) {
                     $portal_path = $path;
                     $isredirect = 1;
                 }
             } else {
                 ($login_host, $lowest_load) =
-                    &compare_server_load($lonhost, $login_host, $lowest_load, $required);
+                    &compare_server_load($lonhost, $login_host, $lowest_load);
                 if ($login_host eq $lonhost) {
                     $portal_path = '';
                     $isredirect = ''; 
@@ -996,7 +976,7 @@ sub choose_server {
             }
         } else {
             ($login_host, $lowest_load) =
-                &compare_server_load($lonhost, $login_host, $lowest_load, $required);
+                &compare_server_load($lonhost, $login_host, $lowest_load);
         }
     }
     if ($login_host ne '') {
@@ -1169,27 +1149,19 @@ sub can_host_session {
 sub spare_can_host {
     my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
     my $canhost=1;
-    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($serverhomedom);
-    if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
-        if ($defdomdefaults{'offloadnow'}{$try_server}) {
-            $canhost = 0;
-        }
-    }
-    if (($canhost) && ($uint_dom)) {
-        my @intdoms;
-        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 $remoterev = &get_server_loncaparev(undef,$try_server);
-            $canhost = &can_host_session($udom,$try_server,$remoterev,
-                                         $remotesessions,
-                                         $defdomdefaults{'hostedsessions'});
-        }
+    my @intdoms;
+    my $internet_names = &Apache::lonnet::get_internet_names($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);
+        $canhost = &can_host_session($udom,$try_server,$remoterev,
+                                     $remotesessions,
+                                     $defdomdefaults{'hostedsessions'});
     }
     return $canhost;
 }
@@ -1283,7 +1255,7 @@ sub check_loadbalancing {
     my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
     my $intdom = &Apache::lonnet::internet_dom($lonhost);
     my $serverhomedom = &host_domain($lonhost);
-    my $domneedscache; 
+
     my $cachetime = 60*60*24;
 
     if (($uintdom ne '') && ($uintdom eq $intdom)) {
@@ -1298,12 +1270,10 @@ sub check_loadbalancing {
             &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
         if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
             $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
-        } else {
-            $domneedscache = $dom_in_use;
         }
     }
     if (ref($result) eq 'HASH') {
-        ($is_balancer,$currtargets,$currrules) =
+        ($is_balancer,$currtargets,$currrules) = 
             &check_balancer_result($result,@hosts);
         if ($is_balancer) {
             if (ref($currrules) eq 'HASH') {
@@ -1353,18 +1323,16 @@ sub check_loadbalancing {
             }
         }
     } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
-        ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
+        my ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
         unless (defined($cached)) {
             my %domconfig =
                 &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
             if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
-                $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
-            } else {
-                $domneedscache = $serverhomedom;
+                $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
             }
         }
         if (ref($result) eq 'HASH') {
-            ($is_balancer,$currtargets,$currrules) =
+            ($is_balancer,$currtargets,$currrules) = 
                 &check_balancer_result($result,@hosts);
             if ($is_balancer) {
                 if (ref($currrules) eq 'HASH') {
@@ -1380,21 +1348,12 @@ sub check_loadbalancing {
                 $is_balancer = 1;
                 $offloadto = &this_host_spares($dom_in_use);
             }
-            unless (defined($cached)) {
-                $domneedscache = $serverhomedom;
-            }
         }
     } else {
         if ($perlvar{'lonBalancer'} eq 'yes') {
             $is_balancer = 1;
             $offloadto = &this_host_spares($dom_in_use);
         }
-        unless (defined($cached)) {
-            $domneedscache = $serverhomedom;
-        }
-    }
-    if ($domneedscache) {
-        &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
     }
     if ($is_balancer) {
         my $lowest_load = 30000;
@@ -1429,8 +1388,8 @@ sub check_loadbalancing {
             $is_balancer = 0;
             if ($uname ne '' && $udom ne '') {
                 if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
-
-                    &appenv({'user.loadbalexempt'     => $lonhost,
+                    
+                    &appenv({'user.loadbalexempt'     => $lonhost,  
                              'user.loadbalcheck.time' => time});
                 }
             }
@@ -1567,7 +1526,7 @@ sub idget {
     
     my %servers = &get_servers($udom,'library');
     foreach my $tryserver (keys(%servers)) {
-	my $idlist=join('&', map { &escape($_); } @ids);
+	my $idlist=join('&',@ids);
 	$idlist=~tr/A-Z/a-z/; 
 	my $reply=&reply("idget:$udom:".$idlist,$tryserver);
 	my @answer=();
@@ -1577,7 +1536,7 @@ sub idget {
 	my $i;
 	for ($i=0;$i<=$#ids;$i++) {
 	    if ($answer[$i]) {
-		$returnhash{$ids[$i]}=&unescape($answer[$i]);
+		$returnhash{$ids[$i]}=$answer[$i];
 	    } 
 	}
     } 
@@ -1619,7 +1578,7 @@ sub idput {
     }
 }
 
-# ---------------------------------------- Delete unwanted IDs from ids.db file
+# ---------------------------------------- Delete unwanted IDs from ids.db file 
 
 sub iddel {
     my ($udom,$idshashref,$uhome)=@_;
@@ -1664,7 +1623,6 @@ 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).'&';
@@ -1672,7 +1630,6 @@ 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 {
@@ -1776,13 +1733,14 @@ sub retrieve_inst_usertypes {
     my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
     if ((ref($domdefs{'inststatustypes'}) eq 'HASH') && 
         (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
-        return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
+        %returnhash = %{$domdefs{'inststatustypes'}};
+        @order = @{$domdefs{'inststatusorder'}};
     } else {
         if (defined(&domain($udom,'primary'))) {
             my $uhome=&domain($udom,'primary');
             my $rep=&reply("inst_usertypes:$udom",$uhome);
             if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
-                &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
+                &logthis("get_dom failed - $rep returned from $uhome in domain: $udom");
                 return (\%returnhash,\@order);
             }
             my ($hashitems,$orderitems) = split(/:/,$rep); 
@@ -1798,15 +1756,15 @@ sub retrieve_inst_usertypes {
                 push(@order,&unescape($item));
             }
         } else {
-            &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
+            &logthis("get_dom failed - no primary domain server for $udom");
         }
-        return (\%returnhash,\@order);
     }
+    return (\%returnhash,\@order);
 }
 
 sub is_domainimage {
     my ($url) = @_;
-    if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
+    if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
         if (&domain($1) ne '') {
             return '1';
         }
@@ -1947,63 +1905,6 @@ sub get_instuser {
     return ($outcome,%userinfo);
 }
 
-sub get_multiple_instusers {
-    my ($udom,$users,$caller) = @_;
-    my ($outcome,$results);
-    if (ref($users) eq 'HASH') {
-        my $count = keys(%{$users});
-        my $requested = &freeze_escape($users);
-        my $homeserver = &domain($udom,'primary');
-        if ($homeserver ne '') {
-            my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
-            my $host=&hostname($homeserver);
-            if ($queryid !~/^\Q$host\E\_/) {
-                &logthis('get_multiple_instusers invalid queryid: '.$queryid.
-                         ' for host: '.$homeserver.'in domain '.$udom);
-                return ($outcome,$results);
-            }
-            my $response = &get_query_reply($queryid);
-            my $maxtries = 5;
-            if ($count > 100) {
-                $maxtries = 1+int($count/20);
-            }
-            my $tries = 1;
-            while (($response=~/^timeout/) && ($tries <= $maxtries)) {
-                $response = &get_query_reply($queryid);
-                $tries ++;
-            }
-            if ($response eq '') {
-                $results = {};
-                foreach my $key (keys(%{$users})) {
-                    my ($uname,$id);
-                    if ($caller eq 'id') {
-                        $id = $key;
-                    } else {
-                        $uname = $key;
-                    }
-                    my ($resp,%info) = &get_instuser($udom,$uname,$id);
-                    $outcome = $resp;
-                    if ($resp eq 'ok') {
-                        %{$results} = (%{$results}, %info);
-                    } else {
-                        last;
-                    }
-                }
-            } elsif(!&error($response) && ($response ne 'refused')) {
-                if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
-                    $outcome = $response;
-                } else {
-                    ($outcome,my $userdata) = split(/=/,$response,2);
-                    if ($outcome eq 'ok') {
-                        $results = &thaw_unescape($userdata);
-                    }
-                }
-            }
-        }
-    }
-    return ($outcome,$results);
-}
-
 sub inst_rulecheck {
     my ($udom,$uname,$id,$item,$rules) = @_;
     my %returnhash;
@@ -2083,15 +1984,12 @@ sub inst_userrules {
 # ------------- Get Authentication, Language and User Tools Defaults for Domain
 
 sub get_domain_defaults {
-    my ($domain,$ignore_cache) = @_;
-    return if (($domain eq '') || ($domain eq 'public'));
+    my ($domain) = @_;
     my $cachetime = 60*60*24;
-    unless ($ignore_cache) {
-        my ($result,$cached)=&is_cached_new('domdefaults',$domain);
-        if (defined($cached)) {
-            if (ref($result) eq 'HASH') {
-                return %{$result};
-            }
+    my ($result,$cached)=&is_cached_new('domdefaults',$domain);
+    if (defined($cached)) {
+        if (ref($result) eq 'HASH') {
+            return %{$result};
         }
     }
     my %domdefaults;
@@ -2099,9 +1997,7 @@ sub get_domain_defaults {
          &Apache::lonnet::get_dom('configuration',['defaults','quotas',
                                   'requestcourses','inststatus',
                                   'coursedefaults','usersessions',
-                                  'requestauthor','selfenrollment',
-                                  'coursecategories','autoenroll'],$domain);
-    my @coursetypes = ('official','unofficial','community','textbook');
+                                  'requestauthor'],$domain);
     if (ref($domconfig{'defaults'}) eq 'HASH') {
         $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'}; 
         $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
@@ -2131,7 +2027,7 @@ sub get_domain_defaults {
         }
     }
     if (ref($domconfig{'requestcourses'}) eq 'HASH') {
-        foreach my $item ('official','unofficial','community','textbook') {
+        foreach my $item ('official','unofficial','community') {
             $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
         }
     }
@@ -2139,41 +2035,20 @@ sub get_domain_defaults {
         $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
     }
     if (ref($domconfig{'inststatus'}) eq 'HASH') {
-        foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
+        foreach my $item ('inststatustypes','inststatusorder') {
             $domdefaults{$item} = $domconfig{'inststatus'}{$item};
         }
     }
     if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
-        $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($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
-            if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
-                my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
-                if (@clonecodes) {
-                    $domdefaults{'canclone'} = join('+',@clonecodes);
-                }
-            }
-        } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
-            $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
+        $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
+        if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
+            $domdefaults{'officialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'official'};
+            $domdefaults{'unofficialcredits'} = $domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'};
+        }
+        if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
+            $domdefaults{'officialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'official'};
+            $domdefaults{'unofficialquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'unofficial'};
+            $domdefaults{'communityquota'} = $domconfig{'coursedefaults'}{'uploadquota'}{'community'};           
         }
     }
     if (ref($domconfig{'usersessions'}) eq 'HASH') {
@@ -2183,50 +2058,6 @@ sub get_domain_defaults {
         if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
             $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
         }
-        if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
-            $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
-        }
-    }
-    if (ref($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'} = $domconfig{'coursecategories'}{'unauth'};
-        }
-    }
-    if (ref($domconfig{'autoenroll'}) eq 'HASH') {
-        $domdefaults{'autofailsafe'} = $domconfig{'autoenroll'}{'autofailsafe'};
     }
     &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
     return %domdefaults;
@@ -2468,25 +2299,21 @@ sub make_key {
 sub devalidate_cache_new {
     my ($name,$id,$debug) = @_;
     if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
-    my $remembered_id=$name.':'.$id;
     $id=&make_key($name,$id);
     $memcache->delete($id);
-    delete($remembered{$remembered_id});
-    delete($accessed{$remembered_id});
+    delete($remembered{$id});
+    delete($accessed{$id});
 }
 
 sub is_cached_new {
     my ($name,$id,$debug) = @_;
-    my $remembered_id=$name.':'.$id; # this is to avoid make_key (which is slow) for 
-                                     # keys in %remembered hash, which persists for
-                                     # duration of request (no restriction on key length).
-    if (exists($remembered{$remembered_id})) {
-	if ($debug) { &Apache::lonnet::logthis("Early return $remembered_id of $remembered{$remembered_id} "); }
-	$accessed{$remembered_id}=[&gettimeofday()];
+    $id=&make_key($name,$id);
+    if (exists($remembered{$id})) {
+	if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
+	$accessed{$id}=[&gettimeofday()];
 	$hits++;
-	return ($remembered{$remembered_id},1);
+	return ($remembered{$id},1);
     }
-    $id=&make_key($name,$id);
     my $value = $memcache->get($id);
     if (!(defined($value))) {
 	if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
@@ -2496,14 +2323,13 @@ sub is_cached_new {
 	if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
 	$value=undef;
     }
-    &make_room($remembered_id,$value,$debug);
+    &make_room($id,$value,$debug);
     if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
     return ($value,1);
 }
 
 sub do_cache_new {
     my ($name,$id,$value,$time,$debug) = @_;
-    my $remembered_id=$name.':'.$id;
     $id=&make_key($name,$id);
     my $setvalue=$value;
     if (!defined($setvalue)) {
@@ -2519,17 +2345,17 @@ sub do_cache_new {
 	$memcache->disconnect_all();
     }
     # need to make a copy of $value
-    &make_room($remembered_id,$value,$debug);
+    &make_room($id,$value,$debug);
     return $value;
 }
 
 sub make_room {
-    my ($remembered_id,$value,$debug)=@_;
+    my ($id,$value,$debug)=@_;
 
-    $remembered{$remembered_id}= (ref($value)) ? &Storable::dclone($value)
+    $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
                                     : $value;
     if ($to_remember<0) { return; }
-    $accessed{$remembered_id}=[&gettimeofday()];
+    $accessed{$id}=[&gettimeofday()];
     if (scalar(keys(%remembered)) <= $to_remember) { return; }
     my $to_kick;
     my $max_time=0;
@@ -2823,22 +2649,20 @@ sub ssi {
     &Apache::lonenc::check_encrypt(\$fn);
     if (%form) {
       $request=new HTTP::Request('POST',&absolute_url().$fn);
-      $request->content(join('&',map {
-            my $name = escape($_);
-            "$name=" . ( ref($form{$_}) eq 'ARRAY'
-            ? join("&$name=", map {escape($_) } @{$form{$_}})
-            : &escape($form{$_}) );
-        } keys(%form)));
+      $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
     } else {
       $request=new HTTP::Request('GET',&absolute_url().$fn);
     }
 
     $request->header(Cookie => $ENV{'HTTP_COOKIE'});
     my $response= $ua->request($request);
+    my $content = $response->content;
+
+
     if (wantarray) {
-	return ($response->content, $response);
+	return ($content, $response);
     } else {
-	return $response->content;
+	return $content;
     }
 }
 
@@ -2870,7 +2694,7 @@ sub allowuploaded {
 #
 # Determine if the current user should be able to edit a particular resource,
 # when viewing in course context.
-# (a) When viewing resource used to determine if "Edit" item is included in
+# (a) When viewing resource used to determine if "Edit" item is included in 
 #     Functions.
 # (b) When displaying folder contents in course editor, used to determine if
 #     "Edit" link will be displayed alongside resource.
@@ -2878,12 +2702,12 @@ sub allowuploaded {
 #  input: six args -- filename (decluttered), course number, course domain,
 #                   url, symb (if registered) and group (if this is a group
 #                   item -- e.g., bulletin board, group page etc.).
-#  output: array of five scalars --
+#  output: array of five scalars -- 
 #          $cfile -- url for file editing if editable on current server
 #          $home -- homeserver of resource (i.e., for author if published,
 #                                           or course if uploaded.).
 #          $switchserver --  1 if server switch will be needed.
-#          $forceedit -- 1 if icon/link should be to go to edit mode
+#          $forceedit -- 1 if icon/link should be to go to edit mode 
 #          $forceview -- 1 if icon/link should be to go to view mode
 #
 
@@ -2972,7 +2796,7 @@ sub can_edit_resource {
                     $forceedit = 1;
                 }
                 $cfile = $resurl;
-            } elsif (($resurl ne '') && (&is_on_map($resurl))) {
+            } elsif (($resurl ne '') && (&is_on_map($resurl))) { 
                 if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
                     $incourse = 1;
                     if ($env{'form.forceedit'}) {
@@ -3003,7 +2827,7 @@ sub can_edit_resource {
                 }
             } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
                 my $template = '/res/lib/templates/simpleproblem.problem';
-                if (&is_on_map($template)) {
+                if (&is_on_map($template)) { 
                     $incourse = 1;
                     $forceview = 1;
                     $cfile = $template;
@@ -3028,13 +2852,6 @@ 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) {
@@ -3050,7 +2867,7 @@ sub can_edit_resource {
                 $cfile=$file;
             }
         }
-        if (($cfile ne '') && (!$incourse || $uploaded) &&
+        if (($cfile ne '') && (!$incourse || $uploaded) && 
             (($home ne '') && ($home ne 'no_host'))) {
             my @ids=&current_machine_ids();
             unless (grep(/^\Q$home\E$/,@ids)) {
@@ -3077,9 +2894,9 @@ sub in_course {
     if ($hideprivileged) {
         my $skipuser;
         my %coursehash = &coursedescription($cdom.'_'.$cnum);
-        my @possdoms = ($cdom);
-        if ($coursehash{'checkforpriv'}) {
-            push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
+        my @possdoms = ($cdom);  
+        if ($coursehash{'checkforpriv'}) { 
+            push(@possdoms,split(/,/,$coursehash{'checkforpriv'})); 
         }
         if (&privileged($uname,$udom,\@possdoms)) {
             $skipuser = 1;
@@ -3583,7 +3400,7 @@ sub extract_embedded_items {
 	    }
 	    if (lc($tagname) eq 'a') {
                 unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
-		    &add_filetype($allfiles,$attr->{'href'},'href');
+                    &add_filetype($allfiles,$attr->{'href'},'href');
                 }
 	    }
             if (lc($tagname) eq 'script') {
@@ -3672,26 +3489,8 @@ sub extract_embedded_items {
                     }
                 }
 	    }
-            if (lc($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]);
@@ -3908,7 +3707,7 @@ sub flushcourselogs {
         }
     }
 #
-# Reverse lookup of domain roles (dc, ad, li, sc, dh, au)
+# Reverse lookup of domain roles (dc, ad, li, sc, au)
 #
     my %domrolebuffer = ();
     foreach my $entry (keys(%domainrolehash)) {
@@ -3923,19 +3722,10 @@ sub flushcourselogs {
         delete $domainrolehash{$entry};
     }
     foreach my $dom (keys(%domrolebuffer)) {
-        my %servers;
-        if (defined(&domain($dom,'primary'))) {
-            my $primary=&domain($dom,'primary');
-            my $hostname=&hostname($primary);
-            $servers{$primary} = $hostname;
-        } else {
-            %servers = &get_servers($dom,'library');
-        }
+	my %servers = &get_servers($dom,'library');
 	foreach my $tryserver (keys(%servers)) {
-	    if (&reply('domroleput:'.$dom.':'.
-	               $domrolebuffer{$dom},$tryserver) eq 'ok') {
-	        last;
-	    } else {
+	    unless (&reply('domroleput:'.$dom.':'.
+			   $domrolebuffer{$dom},$tryserver) eq 'ok') {
 		&logthis('Put of domain roles failed for '.$dom.' and  '.$tryserver);
 	    }
         }
@@ -4055,7 +3845,7 @@ sub userrolelog {
          {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
                     =$tend.':'.$tstart;
     }
-    if ($trole =~ /^(dc|ad|li|au|dg|sc|dh)/ ) {
+    if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
        my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
        $domainrolehash
          {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
@@ -4263,7 +4053,7 @@ sub get_my_roles {
             } else {
                 my $possdoms = [$domain];
                 if (ref($roledoms) eq 'ARRAY') {
-                   push(@{$possdoms},@{$roledoms});
+                   push(@{$possdoms},@{$roledoms}); 
                 }
                 if (&privileged($username,$domain,$possdoms,\@privroles)) {
                     if (!$nothide{$username.':'.$domain}) {
@@ -4357,8 +4147,7 @@ sub courseiddump {
     my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
         $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
         $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
-        $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
-        $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
+        $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner)=@_;
     my $as_hash = 1;
     my %returnhash;
     if (!$domfilter) { $domfilter=''; }
@@ -4371,18 +4160,17 @@ sub courseiddump {
 	    if (($domfilter eq '') ||
 		(&host_domain($tryserver) eq $domfilter)) {
                 my $rep;
-                if (grep { $_ eq $tryserver } &current_machine_ids()) {
-                    $rep = &LONCAPA::Lond::dump_course_id_handler(
-                        join(":", (&host_domain($tryserver), $sincefilter,
-                                &escape($descfilter), &escape($instcodefilter),
+                if (grep { $_ eq $tryserver } current_machine_ids()) {
+                    $rep = LONCAPA::Lond::dump_course_id_handler(
+                        join(":", (&host_domain($tryserver), $sincefilter, 
+                                &escape($descfilter), &escape($instcodefilter), 
                                 &escape($ownerfilter), &escape($coursefilter),
-                                &escape($typefilter), &escape($regexp_ok),
-                                $as_hash, &escape($selfenrollonly),
-                                &escape($catfilter), $showhidden, $caller,
-                                &escape($cloner), &escape($cc_clone), $cloneonly,
-                                &escape($createdbefore), &escape($createdafter),
-                                &escape($creationcontext),$domcloner,$hasuniquecode,
-                                $reqcrsdom,&escape($reqinstcode))));
+                                &escape($typefilter), &escape($regexp_ok), 
+                                $as_hash, &escape($selfenrollonly), 
+                                &escape($catfilter), $showhidden, $caller, 
+                                &escape($cloner), &escape($cc_clone), $cloneonly, 
+                                &escape($createdbefore), &escape($createdafter), 
+                                &escape($creationcontext), $domcloner)));
                 } else {
                     $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
                              $sincefilter.':'.&escape($descfilter).':'.
@@ -4393,10 +4181,10 @@ sub courseiddump {
                              $showhidden.':'.$caller.':'.&escape($cloner).':'.
                              &escape($cc_clone).':'.$cloneonly.':'.
                              &escape($createdbefore).':'.&escape($createdafter).':'.
-                             &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
-                             ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
+                             &escape($creationcontext).':'.$domcloner,
+                             $tryserver);
                 }
-
+                     
                 my @pairs=split(/\&/,$rep);
                 foreach my $item (@pairs) {
                     my ($key,$value)=split(/\=/,$item,2);
@@ -4533,7 +4321,7 @@ my $cachedkey='';
 # The cached times for this user
 my %cachedtimes=();
 # When this was last done
-my $cachedtime='';
+my $cachedtime=();
 
 sub load_all_first_access {
     my ($uname,$udom)=@_;
@@ -4595,92 +4383,6 @@ sub set_first_access {
     return 'already_set';
 }
 }
-
-sub checkout {
-    my ($symb,$tuname,$tudom,$tcrsid)=@_;
-    my $now=time;
-    my $lonhost=$perlvar{'lonHostID'};
-    my $infostr=&escape(
-                 'CHECKOUTTOKEN&'.
-                 $tuname.'&'.
-                 $tudom.'&'.
-                 $tcrsid.'&'.
-                 $symb.'&'.
-                 $now.'&'.$ENV{'REMOTE_ADDR'});
-    my $token=&reply('tmpput:'.$infostr,$lonhost);
-    if ($token=~/^error\:/) {
-        &logthis("<font color=\"blue\">WARNING: ".
-                "Checkout tmpput failed ".$tudom.' - '.$tuname.' - '.$symb.
-                 "</font>");
-        return '';
-    }
-
-    $token=~s/^(\d+)\_.*\_(\d+)$/$1\*$2\*$lonhost/;
-    $token=~tr/a-z/A-Z/;
-
-    my %infohash=('resource.0.outtoken' => $token,
-                  'resource.0.checkouttime' => $now,
-                  'resource.0.outremote' => $ENV{'REMOTE_ADDR'});
-
-    unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
-       return '';
-    } else {
-        &logthis("<font color=\"blue\">WARNING: ".
-                "Checkout cstore failed ".$tudom.' - '.$tuname.' - '.$symb.
-                 "</font>");
-    }
-
-    if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
-                         &escape('Checkout '.$infostr.' - '.
-                                                 $token)) ne 'ok') {
-        return '';
-    } else {
-        &logthis("<font color=\"blue\">WARNING: ".
-                "Checkout log failed ".$tudom.' - '.$tuname.' - '.$symb.
-                 "</font>");
-    }
-    return $token;
-}
-
-# ------------------------------------------------------------ Check in an item
-
-sub checkin {
-    my $token=shift;
-    my $now=time;
-    my ($ta,$tb,$lonhost)=split(/\*/,$token);
-    $lonhost=~tr/A-Z/a-z/;
-    my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
-    $dtoken=~s/\W/\_/g;
-    my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
-                 split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
-
-    unless (($tuname) && ($tudom)) {
-        &logthis('Check in '.$token.' ('.$dtoken.') failed');
-        return '';
-    }
-
-    unless (&allowed('mgr',$tcrsid)) {
-        &logthis('Check in '.$token.' ('.$dtoken.') unauthorized: '.
-                 $env{'user.name'}.' - '.$env{'user.domain'});
-        return '';
-    }
-
-    my %infohash=('resource.0.intoken' => $token,
-                  'resource.0.checkintime' => $now,
-                  'resource.0.inremote' => $ENV{'REMOTE_ADDR'});
-
-    unless (&cstore(\%infohash,$symb,$tcrsid,$tudom,$tuname) eq 'ok') {
-       return '';
-    }
-
-    if (&log($tudom,$tuname,&homeserver($tuname,$tudom),
-                         &escape('Checkin - '.$token)) ne 'ok') {
-        return '';
-    }
-
-    return ($symb,$tuname,$tudom,$tcrsid);
-}
-
 # --------------------------------------------- Set Expire Date for Spreadsheet
 
 sub expirespread {
@@ -5051,7 +4753,7 @@ sub tmprestore {
 # ----------------------------------------------------------------------- Store
 
 sub store {
-    my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
+    my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
     my $home='';
 
     if ($stuname) { $home=&homeserver($stuname,$domain); }
@@ -5081,13 +4783,13 @@ sub store {
     }
     $namevalue=~s/\&$//;
     &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
-    return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
+    return reply("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
 }
 
 # -------------------------------------------------------------- Critical Store
 
 sub cstore {
-    my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
+    my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
     my $home='';
 
     if ($stuname) { $home=&homeserver($stuname,$domain); }
@@ -5118,7 +4820,7 @@ sub cstore {
     $namevalue=~s/\&$//;
     &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
     return critical
-                ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
+                ("store:$domain:$stuname:$namespace:$symb:$namevalue","$home");
 }
 
 # --------------------------------------------------------------------- Restore
@@ -5274,7 +4976,7 @@ sub privileged {
     my $now = time;
     my $roles;
     if (ref($possroles) eq 'ARRAY') {
-        $roles = $possroles;
+        $roles = $possroles; 
     } else {
         $roles = ['dc','su'];
     }
@@ -5298,10 +5000,10 @@ sub privileged {
         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(/_/, $role);
             if (grep(/^\Q$trole\E$/,@{$roles})) {
-                return 1 unless ($tend && $tend < $now)
+                return 1 unless ($tend && $tend < $now) 
                         or ($tstart && $tstart > $now);
             }
         }
@@ -5339,7 +5041,7 @@ sub privileged_by_domain {
                         my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
                         my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
                         next if ($end && $end < $now);
-                        $privileged{$dom}{$trole}{$uname.':'.$udom} =
+                        $privileged{$dom}{$trole}{$uname.':'.$udom} = 
                             $dompersonnel{$server}{$item};
                     }
                 }
@@ -5387,7 +5089,7 @@ sub rolesinit {
     my %allroles=();
     my %allgroups=();
 
-    for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
+    for my $area (grep { ! /^rolesdef_/ } keys %rolesdump) {
         my $role = $rolesdump{$area};
         $area =~ s/\_\w\w$//;
 
@@ -5479,7 +5181,7 @@ sub set_arearole {
 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);
@@ -5600,11 +5302,11 @@ 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 '') {
-        my ($one,$two) = split(m{\./},$rolekey,2);
-        (undef,undef,$$role) = split(/\./,$one,3);
+        (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
         unless (!defined($$role) || $$role eq '') {
-            $$where = '/'.$two;
+            $$where=join('.',@pwhere);
             $$trolecode=$$role.'.'.$$where;
             ($$tstart,$$tend)=split(/\./,$env{$rolekey});
             $$tstatus='is';
@@ -5736,19 +5438,15 @@ sub check_adhoc_privs {
 }
 
 sub set_adhoc_privileges {
-# role can be cc, ca, or cr/<dom>/<dom>-domainconfig/role
+# role can be cc or ca
     my ($dcdom,$pickedcourse,$role,$caller) = @_;
     my $area = '/'.$dcdom.'/'.$pickedcourse;
     my $spec = $role.'.'.$area;
     my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
                                   $env{'user.name'},1);
-    my %rolehash = ();
-    if ($role =~ m{^cr/$dcdom/$dcdom\Q-domainconfig\E/}) {
-        &custom_roleprivs(\%rolehash,$role,$dcdom,$pickedcourse,$spec,$area);
-    } else {
-        &standard_roleprivs(\%rolehash,$role,$dcdom,$spec,$pickedcourse,$area);
-    }
-    my ($author,$adv)= &set_userprivs(\%userroles,\%rolehash);
+    my %ccrole = ();
+    &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
+    my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
     &appenv(\%userroles,[$role,'cm']);
     &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
     unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
@@ -5814,14 +5512,15 @@ sub unserialize {
     return {} if $rep =~ /^error/;
 
     my %returnhash=();
-    foreach my $item (split(/\&/,$rep)) {
-        my ($key, $value) = split(/=/, $item, 2);
-        $key = unescape($key) unless $escapedkeys;
-        next if $key =~ /^error: 2 /;
-        $returnhash{$key} = &thaw_unescape($value);
-    }
+	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);
+	}
+    #return %returnhash;
     return \%returnhash;
-}
+}        
 
 # see Lond::dump_with_regexp
 # if $escapedkeys hash keys won't get unescaped.
@@ -5831,16 +5530,17 @@ sub dump {
     if (!$uname) { $uname=$env{'user.name'}; }
     my $uhome=&homeserver($uname,$udomain);
 
-    if ($regexp) {
-        $regexp=&escape($regexp);
-    } else {
-        $regexp='.';
-    }
-    if (grep { $_ eq $uhome } &current_machine_ids()) {
+    my $reply;
+    if (grep { $_ eq $uhome } current_machine_ids()) {
         # user is hosted on this machine
-        my $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,
+        $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
                     $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
-        return %{&unserialize($reply, $escapedkeys)};
+        return %{unserialize($reply, $escapedkeys)};
+    }
+    if ($regexp) {
+	$regexp=&escape($regexp);
+    } else {
+	$regexp='.';
     }
     my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
     my @pairs=split(/\&/,$rep);
@@ -5848,7 +5548,8 @@ sub dump {
     if (!($rep =~ /^error/ )) {
 	foreach my $item (@pairs) {
 	    my ($key,$value)=split(/=/,$item,2);
-            $key = &unescape($key) unless ($escapedkeys);
+        $key = unescape($key) unless $escapedkeys;
+        #$key = &unescape($key);
 	    next if ($key =~ /^error: 2 /);
 	    $returnhash{$key}=&thaw_unescape($value);
 	}
@@ -5892,7 +5593,7 @@ sub currentdump {
    my $rep;
 
    if (grep { $_ eq $uhome } current_machine_ids()) {
-       $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
+       $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname, 
                    $courseid)));
    } else {
        $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
@@ -6018,7 +5719,7 @@ sub newput {
 # ---------------------------------------------------------  putstore interface
 
 sub putstore {
-   my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
+   my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
@@ -6032,17 +5733,6 @@ 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,
@@ -6151,13 +5841,13 @@ sub tmpdel {
     return &reply("tmpdel:$token",$server);
 }
 
-# ------------------------------------------------------------ get_timebased_id
+# ------------------------------------------------------------ get_timebased_id 
 
 sub get_timebased_id {
     my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
         $maxtries) = @_;
     my ($newid,$error,$dellock);
-    unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
+    unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {  
         return ('','ok','invalid call to get suffix');
     }
 
@@ -6171,7 +5861,7 @@ sub get_timebased_id {
     if (!$maxtries) {
         $maxtries = 10;
     }
-
+    
     if (($cdom eq '') || ($cnum eq '')) {
         if ($env{'request.course.id'}) {
             $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
@@ -6201,15 +5891,10 @@ 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 ++;
             }
@@ -6226,7 +5911,6 @@ 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
@@ -6235,27 +5919,16 @@ 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 ($requrl,$clientip) = @_;
+    my ($requrl) = @_;
     my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
-    my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
+    my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
     if ($result) {
         my %setters;
         if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
@@ -6281,7 +5954,7 @@ sub portfolio_access {
 }
 
 sub get_portfolio_access {
-    my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
+    my ($udom,$unum,$file_name,$group,$access_hash) = @_;
 
     if (!ref($access_hash)) {
 	my $current_perms = &get_portfile_permissions($udom,$unum);
@@ -6290,7 +5963,7 @@ sub get_portfolio_access {
 	$access_hash = $access_controls{$file_name};
     }
 
-    my ($public,$guest,@domains,@users,@courses,@groups,@ips);
+    my ($public,$guest,@domains,@users,@courses,@groups);
     my $now = time;
     if (ref($access_hash) eq 'HASH') {
         foreach my $key (keys(%{$access_hash})) {
@@ -6314,25 +5987,10 @@ 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) {
@@ -6519,7 +6177,6 @@ sub usertools_access {
                       official   => 1,
                       unofficial => 1,
                       community  => 1,
-                      textbook   => 1,
                  );
     } elsif ($context eq 'requestauthor') {
         %tools = (
@@ -6535,7 +6192,7 @@ sub usertools_access {
     }
     return if (!defined($tools{$tool}));
 
-    if (($udom eq '') || ($uname eq '')) {
+    if ((!defined($udom)) || (!defined($uname))) {
         $udom = $env{'user.domain'};
         $uname = $env{'user.name'};
     }
@@ -6554,7 +6211,7 @@ sub usertools_access {
 
     my ($toolstatus,$inststatus,$envkey);
     if ($context eq 'requestauthor') {
-        $envkey = $context;
+        $envkey = $context; 
     } else {
         $envkey = $context.'.'.$tool;
     }
@@ -6816,7 +6473,7 @@ sub customaccess {
 # ------------------------------------------------- Check for a user privilege
 
 sub allowed {
-    my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
+    my ($priv,$uri,$symb,$role)=@_;
     my $ver_orguri=$uri;
     $uri=&deversion($uri);
     my $orguri=$uri;
@@ -7011,16 +6668,11 @@ sub allowed {
         if ($match) {
             if ($env{'user.priv.'.$env{'request.role'}.'./'}
                   =~/\Q$priv\E\&([^\:]*)/) {
-                my $value = $1;
-                if ($noblockcheck) {
-                    $thisallowed.=$value;
+                my @blockers = &has_comm_blocking($priv,$symb,$uri);
+                if (@blockers > 0) {
+                    $thisallowed = 'B';
                 } else {
-                    my @blockers = &has_comm_blocking($priv,$symb,$uri);
-                    if (@blockers > 0) {
-                        $thisallowed = 'B';
-                    } else {
-                        $thisallowed.=$value;
-                    }
+                    $thisallowed.=$1;
                 }
             }
         } else {
@@ -7032,15 +6684,11 @@ sub allowed {
                     $refuri=&declutter($refuri);
                     my ($match) = &is_on_map($refuri);
                     if ($match) {
-                        if ($noblockcheck) {
-                            $thisallowed='F';
+                        my @blockers = &has_comm_blocking($priv,$symb,$refuri);
+                        if (@blockers > 0) {
+                            $thisallowed = 'B';
                         } else {
-                            my @blockers = &has_comm_blocking($priv,$symb,$refuri);
-                            if (@blockers > 0) {
-                                $thisallowed = 'B';
-                            } else {
-                                $thisallowed='F';
-                            }
+                            $thisallowed='F';
                         }
                     }
                 }
@@ -7052,7 +6700,7 @@ sub allowed {
 	&& $thisallowed ne 'F' 
 	&& $thisallowed ne '2'
 	&& &is_portfolio_url($uri)) {
-	$thisallowed = &portfolio_access($uri,$clientip);
+	$thisallowed = &portfolio_access($uri);
     }
     
 # Full access at system, domain or course-wide level? Exit.
@@ -7095,15 +6743,11 @@ sub allowed {
                =~/\Q$priv\E\&([^\:]*)/) {
                my $value = $1;
                if ($priv eq 'bre') {
-                   if ($noblockcheck) {
-                       $thisallowed.=$value;
+                   my @blockers = &has_comm_blocking($priv,$symb,$uri);
+                   if (@blockers > 0) {
+                       $thisallowed = 'B';
                    } else {
-                       my @blockers = &has_comm_blocking($priv,$symb,$uri);
-                       if (@blockers > 0) {
-                           $thisallowed = 'B';
-                       } else {
-                           $thisallowed.=$value;
-                       }
+                       $thisallowed.=$value;
                    }
                } else {
                    $thisallowed.=$value;
@@ -7137,15 +6781,11 @@ sub allowed {
                   =~/\Q$priv\E\&([^\:]*)/) {
                   my $value = $1;
                   if ($priv eq 'bre') {
-                      if ($noblockcheck) {
-                          $thisallowed.=$value;
+                      my @blockers = &has_comm_blocking($priv,$symb,$refuri);
+                      if (@blockers > 0) {
+                          $thisallowed = 'B';
                       } else {
-                          my @blockers = &has_comm_blocking($priv,$symb,$refuri);
-                          if (@blockers > 0) {
-                              $thisallowed = 'B';
-                          } else {
-                              $thisallowed.=$value;
-                          }
+                          $thisallowed.=$value;
                       }
                   } else {
                       $thisallowed.=$value;
@@ -7321,7 +6961,7 @@ sub constructaccess {
     my ($ownername,$ownerdomain,$ownerhome);
 
     ($ownerdomain,$ownername) =
-        ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)(?:/|$)});
+        ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)/priv/($match_domain)/($match_username)/});
 
 # The URL does not really point to any authorspace, forget it
     unless (($ownername) && ($ownerdomain)) { return ''; }
@@ -7376,32 +7016,6 @@ sub constructaccess {
     return '';
 }
 
-# ----------------------------------------------------------- Content Blocking
-
-{
-# Caches for faster Course Contents display where content blocking
-# is in operation (i.e., interval param set) for timed quiz.
-#
-# User for whom data are being temporarily cached.
-my $cacheduser='';
-# Cached blockers for this user (a hash of blocking items).
-my %cachedblockers=();
-# When the data were last cached.
-my $cachedlast='';
-
-sub load_all_blockers {
-    my ($uname,$udom,$blocks)=@_;
-    if (($uname ne '') && ($udom ne '')) {
-        if (($cacheduser eq $uname.':'.$udom) &&
-            (abs($cachedlast-time)<5)) {
-            return;
-        }
-    }
-    $cachedlast=time;
-    $cacheduser=$uname.':'.$udom;
-    %cachedblockers = &get_commblock_resources($blocks);
-}
-
 sub get_comm_blocks {
     my ($cdom,$cnum) = @_;
     if ($cdom eq '' || $cnum eq '') {
@@ -7422,21 +7036,27 @@ sub get_comm_blocks {
     return %commblocks;
 }
 
-sub get_commblock_resources {
-    my ($blocks) = @_;
-    my %blockers = ();
-    return %blockers unless ($env{'request.course.id'});
-    return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
+sub has_comm_blocking {
+    my ($priv,$symb,$uri,$blocks) = @_;
+    return unless ($env{'request.course.id'});
+    return unless ($priv eq 'bre');
+    return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
     my %commblocks;
     if (ref($blocks) eq 'HASH') {
         %commblocks = %{$blocks};
     } else {
         %commblocks = &get_comm_blocks();
     }
-    return %blockers unless (keys(%commblocks) > 0);
-    my $navmap = Apache::lonnavmaps::navmap->new();
-    return %blockers unless (ref($navmap));
+    return unless (keys(%commblocks) > 0);
+    if (!$symb) { $symb=&symbread($uri,1); }
+    my ($map,$resid,undef)=&decode_symb($symb);
+    my %tocheck = (
+                    maps      => $map,
+                    resources => $symb,
+                  );
+    my @blockers;
     my $now = time;
+    my $navmap = Apache::lonnavmaps::navmap->new();
     foreach my $block (keys(%commblocks)) {
         if ($block =~ /^(\d+)____(\d+)$/) {
             my ($start,$end) = ($1,$2);
@@ -7444,13 +7064,17 @@ sub get_commblock_resources {
                 if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
                     if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
                         if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
-                            if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
-                                $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
+                            if ($commblocks{$block}{'blocks'}{'docs'}{'maps'}{$map}) {
+                                unless (grep(/^\Q$block\E$/,@blockers)) {
+                                    push(@blockers,$block);
+                                }
                             }
                         }
                         if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
-                            if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
-                                $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
+                            if ($commblocks{$block}{'blocks'}{'docs'}{'resources'}{$symb}) {
+                                unless (grep(/^\Q$block\E$/,@blockers)) {  
+                                    push(@blockers,$block);
+                                }
                             }
                         }
                     }
@@ -7461,31 +7085,32 @@ sub get_commblock_resources {
             my @to_test;
             if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
                 if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
-                    my @interval;
-                    my $type = 'map';
-                    if ($item eq 'course') {
-                        $type = 'course';
-                        @interval=&EXT("resource.0.interval");
-                    } else {
-                        if ($item =~ /___\d+___/) {
-                            $type = 'resource';
-                            @interval=&EXT("resource.0.interval",$item);
-                            if (ref($navmap)) {
-                                my $res = $navmap->getBySymb($item);
-                                push(@to_test,$res);
-                            }
+                    my $check_interval;
+                    if (&check_docs_block($commblocks{$block}{'blocks'}{'docs'},\%tocheck)) {
+                        my @interval;
+                        my $type = 'map';
+                        if ($item eq 'course') {
+                            $type = 'course';
+                            @interval=&EXT("resource.0.interval");
                         } else {
-                            my $mapsymb = &symbread($item,1);
-                            if ($mapsymb) {
-                                if (ref($navmap)) {
-                                    my $mapres = $navmap->getBySymb($mapsymb);
-                                    @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
-                                    foreach my $res (@to_test) {
-                                        my $symb = $res->symb();
-                                        next if ($symb eq $mapsymb);
-                                        if ($symb ne '') {
-                                            @interval=&EXT("resource.0.interval",$symb);
-                                            if ($interval[1] eq 'map') {
+                            if ($item =~ /___\d+___/) {
+                                $type = 'resource';
+                                @interval=&EXT("resource.0.interval",$item);
+                                if (ref($navmap)) {                        
+                                    my $res = $navmap->getBySymb($item); 
+                                    push(@to_test,$res);
+                                }
+                            } else {
+                                my $mapsymb = &symbread($item,1);
+                                if ($mapsymb) {
+                                    if (ref($navmap)) {
+                                        my $mapres = $navmap->getBySymb($mapsymb);
+                                        @to_test = $mapres->retrieveResources($mapres,undef,0,1);
+                                        foreach my $res (@to_test) {
+                                            my $symb = $res->symb();
+                                            next if ($symb eq $mapsymb);
+                                            if ($symb ne '') {
+                                                @interval=&EXT("resource.0.interval",$symb);
                                                 last;
                                             }
                                         }
@@ -7493,35 +7118,26 @@ sub get_commblock_resources {
                                 }
                             }
                         }
-                    }
-                    if ($interval[0] =~ /^\d+$/) {
-                        my $first_access;
-                        if ($type eq 'resource') {
-                            $first_access=&get_first_access($interval[1],$item);
-                        } elsif ($type eq 'map') {
-                            $first_access=&get_first_access($interval[1],undef,$item);
-                        } else {
-                            $first_access=&get_first_access($interval[1]);
-                        }
-                        if ($first_access) {
-                            my $timesup = $first_access+$interval[0];
-                            if ($timesup > $now) {
-                                my $activeblock;
-                                foreach my $res (@to_test) {
-                                    if ($res->answerable()) {
-                                        $activeblock = 1;
-                                        last;
-                                    }
-                                }
-                                if ($activeblock) {
-                                    if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
-                                         if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
-                                             $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
-                                         }
-                                    }
-                                    if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
-                                        if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
-                                            $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
+                        if ($interval[0] =~ /\d+/) {
+                            my $first_access;
+                            if ($type eq 'resource') {
+                                $first_access=&get_first_access($interval[1],$item);
+                            } elsif ($type eq 'map') {
+                                $first_access=&get_first_access($interval[1],undef,$item);
+                            } else {
+                                $first_access=&get_first_access($interval[1]);
+                            }
+                            if ($first_access) {
+                                my $timesup = $first_access+$interval[0];
+                                if ($timesup > $now) {
+                                    foreach my $res (@to_test) {
+                                        if ($res->is_problem()) {
+                                            if ($res->completable()) {
+                                                unless (grep(/^\Q$block\E$/,@blockers)) {
+                                                    push(@blockers,$block);
+                                                }
+                                                last;
+                                            }
                                         }
                                     }
                                 }
@@ -7532,66 +7148,33 @@ sub get_commblock_resources {
             }
         }
     }
-    return %blockers;
+    return @blockers;
 }
 
-sub has_comm_blocking {
-    my ($priv,$symb,$uri,$blocks) = @_;
-    my @blockers;
-    return unless ($env{'request.course.id'});
-    return unless ($priv eq 'bre');
-    return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
-    return if ($env{'request.state'} eq 'construct');
-    &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
-    return unless (keys(%cachedblockers) > 0);
-    my (%possibles,@symbs);
-    if (!$symb) {
-        $symb = &symbread($uri,1,1,1,\%possibles);
+sub check_docs_block {
+    my ($docsblock,$tocheck) =@_;
+    if ((ref($docsblock) ne 'HASH') || (ref($tocheck) ne 'HASH')) {
+        return;
     }
-    if ($symb) {
-        @symbs = ($symb);
-    } elsif (keys(%possibles)) {
-        @symbs = keys(%possibles);
-    }
-    my $noblock;
-    foreach my $symb (@symbs) {
-        last if ($noblock);
-        my ($map,$resid,$resurl)=&decode_symb($symb);
-        foreach my $block (keys(%cachedblockers)) {
-            if ($block =~ /^firstaccess____(.+)$/) {
-                my $item = $1;
-                if (($item eq $map) || ($item eq $symb)) {
-                    $noblock = 1;
-                    last;
-                }
-            }
-            if (ref($cachedblockers{$block}) eq 'HASH') {
-                if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
-                    if ($cachedblockers{$block}{'resources'}{$symb}) {
-                        unless (grep(/^\Q$block\E$/,@blockers)) {
-                            push(@blockers,$block);
-                        }
-                    }
-                }
+    if (ref($docsblock->{'maps'}) eq 'HASH') {
+        if ($tocheck->{'maps'}) {
+            if ($docsblock->{'maps'}{$tocheck->{'maps'}}) {
+                return 1;
             }
-            if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
-                if ($cachedblockers{$block}{'maps'}{$map}) {
-                    unless (grep(/^\Q$block\E$/,@blockers)) {
-                        push(@blockers,$block);
-                    }
-                }
+        }
+    }
+    if (ref($docsblock->{'resources'}) eq 'HASH') {
+        if ($tocheck->{'resources'}) {
+            if ($docsblock->{'resources'}{$tocheck->{'resources'}}) {
+                return 1;
             }
         }
     }
-    return if ($noblock);
-    return @blockers;
-}
+    return;
 }
 
-# -------------------------------- Deversion and split uri into path an filename
-
 #
-#   Removes the version from a URI and
+#   Removes the versino from a URI and
 #   splits it in to its filename and path to the filename.
 #   Seems like File::Basename could have done this more clearly.
 #   Parameters:
@@ -7659,7 +7242,7 @@ sub get_symb_from_alias {
 
 sub definerole {
   if (allowed('mcr','/')) {
-    my ($rolename,$sysrole,$domrole,$courole,$uname,$udom)=@_;
+    my ($rolename,$sysrole,$domrole,$courole)=@_;
     foreach my $role (split(':',$sysrole)) {
 	my ($crole,$cqual)=split(/\&/,$role);
         if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
@@ -7687,19 +7270,11 @@ sub definerole {
             }
         }
     }
-    my $uhome;
-    if (($uname ne '') && ($udom ne '')) {
-        $uhome = &homeserver($uname,$udom);
-        return $uhome if ($uhome eq 'no_host');
-    } else {
-        $uname = $env{'user.name'};
-        $udom = $env{'user.domain'};
-        $uhome = $env{'user.home'};
-    }
     my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
-                "$udom:$uname:rolesdef_$rolename=".
+                "$env{'user.domain'}:$env{'user.name'}:".
+	        "rolesdef_$rolename=".
                 escape($sysrole.'_'.$domrole.'_'.$courole);
-    return reply($command,$uhome);
+    return reply($command,$env{'user.home'});
   } else {
     return 'refused';
   }
@@ -7708,23 +7283,19 @@ sub definerole {
 # ---------------- Make a metadata query against the network of library servers
 
 sub metadata_query {
-    my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
+    my ($query,$custom,$customshow,$server_array)=@_;
     my %rhash;
     my %libserv = &all_library();
     my @server_list = (defined($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).':::'.&escape($domains),$server);
+	    my $reply=&reply("querysend:".&escape($query),$server);
 	    $rhash{$server}=$reply;
 	}
 	else {
 	    my $reply=&reply("querysend:".&escape($query).':'.
-			     &escape($custom).':'.&escape($customshow).':'.&escape($domains),
+			     &escape($custom).':'.&escape($customshow),
 			     $server);
 	    $rhash{$server}=$reply;
 	}
@@ -7781,12 +7352,10 @@ sub update_allusers_table {
 
 sub fetch_enrollment_query {
     my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
-    my ($homeserver,$sleep,$loopmax);
+    my $homeserver;
     my $maxtries = 1;
     if ($context eq 'automated') {
         $homeserver = $perlvar{'lonHostID'};
-        $sleep = 2;
-        $loopmax = 100;
         $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
     } else {
         $homeserver = &homeserver($cnum,$dom);
@@ -7804,17 +7373,17 @@ sub fetch_enrollment_query {
         &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum); 
         return 'error: '.$queryid;
     }
-    my $reply = &get_query_reply($queryid,$sleep.$loopmax);
+    my $reply = &get_query_reply($queryid);
     my $tries = 1;
     while (($reply=~/^timeout/) && ($tries < $maxtries)) {
-        $reply = &get_query_reply($queryid,$sleep,$loopmax);
+        $reply = &get_query_reply($queryid);
         $tries ++;
     }
     if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
         &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
     } else {
         my @responses = split(/:/,$reply);
-        if (grep { $_ eq $homeserver } &current_machine_ids()) {
+        if ($homeserver eq $perlvar{'lonHostID'}) {
             foreach my $line (@responses) {
                 my ($key,$value) = split(/=/,$line,2);
                 $$replyref{$key} = $value;
@@ -7849,17 +7418,11 @@ sub fetch_enrollment_query {
 }
 
 sub get_query_reply {
-    my ($queryid,$sleep,$loopmax) = @_;
-    if (($sleep eq '') || ($sleep !~ /^\d+\.?\d*$/)) {
-        $sleep = 0.2;
-    }
-    if (($loopmax eq '') || ($loopmax =~ /\D/)) {
-        $loopmax = 100;
-    }
+    my $queryid=shift;
     my $replyfile=LONCAPA::tempdir().$queryid;
     my $reply='';
-    for (1..$loopmax) {
-	sleep($sleep);
+    for (1..100) {
+	sleep 2;
         if (-e $replyfile.'.end') {
 	    if (open(my $fh,$replyfile)) {
 		$reply = join('',<$fh>);
@@ -8221,20 +7784,17 @@ sub auto_courserequest_checks {
 }
 
 sub auto_courserequest_validation {
-    my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
+    my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
     my ($homeserver,$response);
     if ($dom =~ /^$match_domain$/) {
         $homeserver = &domain($dom,'primary');
     }
-    unless ($homeserver eq 'no_host') {
-        my $customdata;
-        if (ref($custominfo) eq 'HASH') {
-            $customdata = &freeze_escape($custominfo);
-        }
+    unless ($homeserver eq 'no_host') {  
+          
         $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
                                     ':'.&escape($crstype).':'.&escape($inststatuslist).
-                                    ':'.&escape($instcode).':'.&escape($instseclist).':'.
-                                    $customdata,$homeserver));
+                                    ':'.&escape($instcode).':'.&escape($instseclist),
+                                    $homeserver));
     }
     return $response;
 }
@@ -8253,135 +7813,6 @@ 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($value);
-            }
-        }
-    }
-    return \%crsreqresponse;
-}
-
-sub auto_export_grades {
-    my ($cdom,$cnum,$inforef,$gradesref) = @_;
-    my ($homeserver,%exportresponse);
-    if ($cdom =~ /^$match_domain$/) {
-        $homeserver = &domain($cdom,'primary');
-    }
-    unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
-        my $info;
-        if (ref($inforef) eq 'HASH') {
-            $info = &freeze_escape($inforef);
-        }
-        if (ref($gradesref) eq 'HASH') {
-            my $grades = &freeze_escape($gradesref);
-            my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
-                                $info.':'.$grades,$homeserver);
-            unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
-                my @items = split(/&/,$response);
-                foreach my $item (@items) {
-                    my ($key,$value) = split('=',$item);
-                    $exportresponse{&unescape($key)} = &thaw_unescape($value);
-                }
-            }
-        }
-    }
-    return \%exportresponse;
-}
-
-sub check_instcode_cloning {
-    my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
-    unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
-        return;
-    }
-    my $canclone;
-    if (@{$code_order} > 0) {
-        my $instcoderegexp ='^';
-        my @clonecodes = split(/\&/,$cloner);
-        foreach my $item (@{$code_order}) {
-            if (grep(/^\Q$item\E=/,@clonecodes)) {
-                foreach my $pair (@clonecodes) {
-                    my ($key,$val) = split(/\=/,$pair,2);
-                    $val = &unescape($val);
-                    if ($key eq $item) {
-                        $instcoderegexp .= '('.$val.')';
-                        last;
-                    }
-                }
-            } else {
-                $instcoderegexp .= $codedefaults->{$item};
-            }
-        }
-        $instcoderegexp .= '$';
-        my (@from,@to);
-        eval {
-               (@from) = ($clonefromcode =~ /$instcoderegexp/);
-               (@to) = ($clonetocode =~ /$instcoderegexp/);
-        };
-        if ((@from > 0) && (@to > 0)) {
-            my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
-            if (!@diffs) {
-                $canclone = 1;
-            }
-        }
-    }
-    return $canclone;
-}
-
-sub default_instcode_cloning {
-    my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
-    my (%codedefaults,@code_order,$canclone);
-    if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
-        %codedefaults = %{$codedefaultsref};
-        @code_order = @{$codeorderref};
-    } elsif ($clonedom) {
-        &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
-    }
-    if (($domdefclone) && (@code_order)) {
-        my @clonecodes = split(/\+/,$domdefclone);
-        my $instcoderegexp ='^';
-        foreach my $item (@code_order) {
-            if (grep(/^\Q$item\E$/,@clonecodes)) {
-                $instcoderegexp .= '('.$codedefaults{$item}.')';
-            } else {
-                $instcoderegexp .= $codedefaults{$item};
-            }
-        }
-        $instcoderegexp .= '$';
-        my (@from,@to);
-        eval {
-            (@from) = ($clonefromcode =~ /$instcoderegexp/);
-            (@to) = ($clonetocode =~ /$instcoderegexp/);
-        };
-        if ((@from > 0) && (@to > 0)) {
-            my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
-            if (!@diffs) {
-                $canclone = 1;
-            }
-        }
-    }
-    return $canclone;
-}
-
 # ------------------------------------------------------- Course Group routines
 
 sub get_coursegroups {
@@ -8650,7 +8081,7 @@ sub assignrole {
                         }
                     }
                 } elsif ($context eq 'requestauthor') {
-                    if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
+                    if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) && 
                         ($url eq '/'.$udom.'/') && ($role eq 'au')) {
                         if ($env{'environment.requestauthor'} eq 'automatic') {
                             $refused = '';
@@ -8658,13 +8089,13 @@ sub assignrole {
                             my %domdefaults = &get_domain_defaults($udom);
                             if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
                                 my $checkbystatus;
-                                if ($env{'user.adv'}) {
+                                if ($env{'user.adv'}) { 
                                     my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
                                     if ($disposition eq 'automatic') {
                                         $refused = '';
                                     } elsif ($disposition eq '') {
                                         $checkbystatus = 1;
-                                    }
+                                    } 
                                 } else {
                                     $checkbystatus = 1;
                                 }
@@ -8746,12 +8177,12 @@ sub assignrole {
             &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
                            $selfenroll,$context);
         } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
-                 ($role eq 'au') || ($role eq 'dc') || ($role eq 'dh')) {
+                 ($role eq 'au') || ($role eq 'dc')) {
             &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
                            $context);
         } elsif (($role eq 'ca') || ($role eq 'aa')) {
             &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
-                             $context);
+                             $context); 
         }
         if ($role eq 'cc') {
             &autoupdate_coowners($url,$end,$start,$uname,$udom);
@@ -9051,7 +8482,7 @@ sub modifyuser {
 sub modifystudent {
     my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
         $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
-        $selfenroll,$context,$inststatus,$credits,$instsec)=@_;
+        $selfenroll,$context,$inststatus,$credits)=@_;
     if (!$cid) {
 	unless ($cid=$env{'request.course.id'}) {
 	    return 'not_in_class';
@@ -9063,17 +8494,17 @@ sub modifystudent {
          $desiredhome,$email,$inststatus);
     unless ($reply eq 'ok') { return $reply; }
     # This will cause &modify_student_enrollment to get the uid from the
-    # student's environment
+    # students environment
     $uid = undef if (!$forceid);
     $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
-					$gene,$usec,$end,$start,$type,$locktype,
-                                        $cid,$selfenroll,$context,$credits,$instsec);
+                                        $gene,$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,$credits,$instsec) = @_;
+        $locktype,$cid,$selfenroll,$context,$credits) = @_;
     my ($cdom,$cnum,$chome);
     if (!$cid) {
 	unless ($cid=$env{'request.course.id'}) {
@@ -9120,7 +8551,7 @@ sub modify_student_enrollment {
     my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
     my $reply=cput('classlist',
 		   {$user => 
-			join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits,$instsec) },
+			join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
 		   $cdom,$cnum);
     if (($reply eq 'ok') || ($reply eq 'delayed')) {
         &devalidate_getsection_cache($udom,$uname,$cid);
@@ -9644,9 +9075,9 @@ sub modify_access_controls {
     my $tries = 0;
     my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
    
-    while (($gotlock ne 'ok') && $tries < 10) {
+    while (($gotlock ne 'ok') && $tries <3) {
         $tries ++;
-        sleep(0.1);
+        sleep 1;
         $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
     }
     if ($gotlock eq 'ok') {
@@ -9939,23 +9370,7 @@ sub dirlist {
             foreach my $user (sort(keys(%allusers))) {
                 push(@alluserslist,$user.'&user');
             }
-            if (!%listerror) {
-                # no errors
-                return (\@alluserslist);
-            } elsif (scalar(keys(%servers)) == 1) {
-                # one library server, one error
-                my ($key) = keys(%listerror);
-                return (\@alluserslist, $listerror{$key});
-            } elsif ( grep { $_ eq 'con_lost' } values(%listerror) ) {
-                # con_lost indicates that we might miss data from at least one
-                # library server
-                return (\@alluserslist, 'con_lost');
-            } else {
-                # multiple library servers and no con_lost -> data should be
-                # complete.
-                return (\@alluserslist);
-            }
-
+            return (\@alluserslist);
         } else {
             return ([],'missing username');
         }
@@ -10172,12 +9587,10 @@ sub get_userresdata {
     }
     #error 2 occurs when the .db doesn't exist
     if ($tmp!~/error: 2 /) {
-        if ((!defined($cached)) || ($tmp ne 'con_lost')) {
-	    &logthis("<font color=\"blue\">WARNING:".
-		     " Trying to get resource data for ".
-		     $uname." at ".$udom.": ".
-		     $tmp."</font>");
-        }
+	&logthis("<font color=\"blue\">WARNING:".
+		 " Trying to get resource data for ".
+		 $uname." at ".$udom.": ".
+		 $tmp."</font>");
     } elsif ($tmp=~/error: 2 /) {
 	#&EXT_cache_set($udom,$uname);
 	&do_cache_new('userres',$hashid,undef,600);
@@ -10217,26 +9630,6 @@ 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
 #
@@ -10424,7 +9817,7 @@ sub EXT {
             $courseid = $cid;
         }
 	if (($symbparm && $courseid) && 
-	    (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
+	    (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid)))  {
 
 	    #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
 
@@ -10675,7 +10068,7 @@ sub metadata {
         ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
 	return undef;
     }
-    if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv}) 
+    if (($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) 
 	&& &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
 	return undef;
     }
@@ -10936,7 +10329,7 @@ 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
     }
@@ -11212,7 +10605,7 @@ sub symbverify {
             $ids=$bighash{'ids_'.&clutter($thisurl)};
         }
         unless ($ids) {
-            my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
+            my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;  
             $ids=$bighash{$idkey};
         }
         if ($ids) {
@@ -11228,14 +10621,14 @@ sub symbverify {
                    if (ref($encstate)) {
                        $$encstate = $bighash{'encrypted_'.$id};
                    }
-                   if (($env{'request.role.adv'}) ||
-                       ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
+		   if (($env{'request.role.adv'}) ||
+		       ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
                        ($thisurl eq '/adm/navmaps')) {
-                       $okay=1;
+		       $okay=1;
                        last;
-                   }
-               }
-           }
+		   }
+	       }
+	   }
         }
 	untie(%bighash);
     }
@@ -11307,21 +10700,19 @@ sub deversion {
 # ------------------------------------------------------ Return symb list entry
 
 sub symbread {
-    my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
-    my $cache_str='request.symbread.cached.'.$thisfn;
-    if (defined($env{$cache_str})) {
-        if ($ignorecachednull) {
-            return $env{$cache_str} unless ($env{$cache_str} eq '');
-        } else {
+    my ($thisfn,$donotrecurse)=@_;
+    my $cache_str;
+    if ($thisfn ne '') {
+        $cache_str='request.symbread.cached.'.$thisfn;
+        if ($env{$cache_str} ne '') {
             return $env{$cache_str};
         }
-    }
+    } else {
 # no filename provided? try from environment
-    unless ($thisfn) {
         if ($env{'request.symb'}) {
-            return $env{$cache_str}=&symbclean($env{'request.symb'});
-        }
-        $thisfn=$env{'request.filename'};
+	    return $env{$cache_str}=&symbclean($env{'request.symb'});
+	}
+	$thisfn=$env{'request.filename'};
     }
     if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
 # is that filename actually a symb? Verify, clean, and return
@@ -11377,46 +10768,18 @@ sub symbread {
 		     my ($mapid,$resid)=split(/\./,$ids);
 		     $syval=&encode_symb($bighash{'map_id_'.$mapid},
 						    $resid,$thisfn);
-                     if (ref($possibles) eq 'HASH') {
-                         $possibles->{$syval} = 1;
-                     }
-                     if ($checkforblock) {
-                         my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
-                         if (@blockers) {
-                             $syval = '';
-                             return;
-                         }
-                     }
-                 } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
+                 } elsif (!$donotrecurse) {
 # ------------------------------------------ There is more than one possibility
                      my $realpossible=0;
                      foreach my $id (@possibilities) {
 			 my $file=$bighash{'src_'.$id};
-                         my $canaccess;
-                         if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
-                             $canaccess = 1;
-                         } else {
-                             $canaccess = &allowed('bre',$file);
-                         }
-                         if ($canaccess) {
-         		     my ($mapid,$resid)=split(/\./,$id);
-                             if ($bighash{'map_type_'.$mapid} ne 'page') {
-                                 my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
-                                                             $resid,$thisfn);
-                                 if (ref($possibles) eq 'HASH') {
-                                     $possibles->{$syval} = 1;
-                                 }
-                                 if ($checkforblock) {
-                                     my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
-                                     unless (@blockers > 0) {
-                                         $syval = $poss_syval;
-                                         $realpossible++;
-                                     }
-                                 } else {
-                                     $syval = $poss_syval;
-                                     $realpossible++;
-                                 }
-                             }
+                         if (&allowed('bre',$file)) {
+         		    my ($mapid,$resid)=split(/\./,$id);
+                            if ($bighash{'map_type_'.$mapid} ne 'page') {
+				$realpossible++;
+                                $syval=&encode_symb($bighash{'map_id_'.$mapid},
+						    $resid,$thisfn);
+                            }
 			 }
                      }
 		     if ($realpossible!=1) { $syval=''; }
@@ -11424,7 +10787,7 @@ sub symbread {
                      $syval='';
                  }
 	      }
-              untie(%bighash);
+              untie(%bighash)
            }
         }
         if ($syval) {
@@ -11577,6 +10940,7 @@ sub rndseed {
 	$which =&get_rand_alg($courseid);
     }
     if (defined(&getCODE())) {
+
 	if ($which eq '64bit5') {
 	    return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
 	} elsif ($which eq '64bit4') {
@@ -11762,12 +11126,8 @@ sub rndseed_CODE_64bit5 {
 sub setup_random_from_rndseed {
     my ($rndseed)=@_;
     if ($rndseed =~/([,:])/) {
-	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,$num2);
-        }
+	my ($num1,$num2)=split(/[,:]/,$rndseed);
+	&Math::Random::random_set_seed(abs($num1),abs($num2));
     } else {
 	&Math::Random::random_set_seed_from_phrase($rndseed);
     }
@@ -12158,9 +11518,7 @@ sub default_login_domain {
 sub declutter {
     my $thisfn=shift;
     if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
-    unless ($thisfn=~m{^/home/httpd/html/priv/}) {
-        $thisfn=~s{^/home/httpd/html}{};
-    }
+    $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
     $thisfn=~s/^\///;
     $thisfn=~s|^adm/wrapper/||;
     $thisfn=~s|^adm/coursedocs/showdoc/||;
@@ -12287,7 +11645,7 @@ sub get_dns {
 	$alldns{$host} = $protocol;
     }
     while (%alldns) {
-	my ($dns) = sort { $b cmp $a } keys(%alldns);
+	my ($dns) = keys(%alldns);
 	my $ua=new LWP::UserAgent;
         $ua->timeout(30);
 	my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
@@ -12295,9 +11653,9 @@ sub get_dns {
         delete($alldns{$dns});
 	next if ($response->is_error());
 	my @content = split("\n",$response->content);
-        unless ($nocache) {
+	unless ($nocache) {
 	    &do_cache_new('dns',$url,\@content,30*24*60*60);
-        }
+	}
 	&$func(\@content,$hashref);
 	return;
     }
@@ -12313,37 +11671,36 @@ sub get_dns {
 # ------------------------------------------------------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 $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
     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) {
+        my $versions = shift(@{$lines});
+        my %supported;
+        if ($versions =~ /^VERSIONS\:([\w\.\,]+)$/) {
+            my $releaseslist = $1;
+            if ($releaseslist =~ /,/) {
+                map { $supported{$_} = 1; } split(/,/,$releaseslist);
+            } elsif ($releaseslist) {
+                $supported{$releaseslist} = 1;
+            }
+        }
+        if ($supported{$release}) {  
+            my $matchthis = 0;
             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/};
+                if ($line =~ /^(\d[\w\.]+)$/) {
+                    if ($matchthis) {
+                        last;
+                    } elsif ($1 eq $release) {
+                        $matchthis = 1;
                     }
+                } elsif ($matchthis) {
+                    my ($file,$version,$shasum) = split(/,/,$line);
+                    $chksum{$file} = $shasum;
+                    $revnum{$file} = $version;
                 }
-                $chksum{$file} = $shasum;
-                $revnum{$file} = $version;
             }
             if (ref($hashref) eq 'HASH') {
                 %{$hashref} = (
@@ -12357,11 +11714,8 @@ sub parse_dns_checksums_tab {
 }
 
 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,
+    my %checksums; 
+    &get_dns('/adm/dns/checksums',\&parse_dns_checksums_tab,1,1,
              \%checksums);
     return \%checksums;
 }
@@ -12394,8 +11748,8 @@ sub fetch_dns_checksums {
     }
 
     sub load_domain_tab {
-	my ($ignore_cache,$nocache) = @_;
-	&get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
+	my ($ignore_cache) = @_;
+	&get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache);
 	my $fh;
 	if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
 	    my @lines = <$fh>;
@@ -12481,8 +11835,8 @@ sub fetch_dns_checksums {
     }
 
     sub load_hosts_tab {
-	my ($ignore_cache,$nocache) = @_;
-	&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
+	my ($ignore_cache) = @_;
+	&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
 	open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
 	my @config = <$config>;
 	&parse_hosts_tab(\@config);
@@ -12504,8 +11858,7 @@ sub fetch_dns_checksums {
     }
 
     sub all_names {
-        my ($ignore_cache,$nocache) = @_;
-	&load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
+	&load_hosts_tab() if (!$loaded);
 
 	return %name_to_host;
     }
@@ -12627,7 +11980,7 @@ sub fetch_dns_checksums {
     }
     
     sub get_iphost {
-	my ($ignore_cache,$nocache) = @_;
+	my ($ignore_cache) = @_;
 
 	if (!$ignore_cache) {
 	    if (%iphost) {
@@ -12651,7 +12004,7 @@ sub fetch_dns_checksums {
 	    %old_name_to_ip = %{$ip_info->[1]};
 	}
 
-	my %name_to_host = &all_names($ignore_cache,$nocache);
+	my %name_to_host = &all_names();
 	foreach my $name (keys(%name_to_host)) {
 	    my $ip;
 	    if (!exists($name_to_ip{$name})) {
@@ -12676,11 +12029,9 @@ sub fetch_dns_checksums {
 	    }
 	    push(@{$iphost{$ip}},@{$name_to_host{$name}});
 	}
-        unless ($nocache) {
-	    &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;
     }
@@ -12742,12 +12093,12 @@ sub fetch_dns_checksums {
 }
 
 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 2.11);
+    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);
 }
 
-# ------------------------------------------------------- Read loncaparev table
+# ---------------------------------------------------------- Read loncaparev table
 {
-    sub load_loncaparevs {
+    sub load_loncaparevs { 
         if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
             if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
                 while (my $configline=<$config>) {
@@ -12761,7 +12112,7 @@ sub all_loncaparevs {
     }
 }
 
-# ----------------------------------------------------- Read serverhostID table
+# ---------------------------------------------------------- Read serverhostID table
 {
     sub load_serverhomeIDs {
         if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
@@ -12853,11 +12204,11 @@ BEGIN {
     close($config);
 }
 
-# --------------------------------------------------------- Read loncaparev table
+# ---------------------------------------------------------- Read loncaparev table
 
 &load_loncaparevs();
 
-# ------------------------------------------------------- Read serverhostID table
+# ---------------------------------------------------------- Read serverhostID table
 
 &load_serverhomeIDs();
 
@@ -12920,6 +12271,17 @@ $readit=1;
 	if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
 	&logthis(" Detected 64bit platform ($_64bit)");
     }
+
+    {
+        eval {
+            ($apache) =
+                (Apache2::ServerUtil::get_server_version() =~ m{Apache/(\d+\.\d+)});
+        };
+        if ($@) {
+           $apache = 1.3;
+        }
+    }
+
 }
 }
 
@@ -13061,7 +12423,7 @@ were new keys. I.E. 1:foo will become 1:
 Calling convention:
 
  my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
- &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
+ &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname);
 
 For more detailed information, see lonnet specific documentation.
 
@@ -13197,29 +12559,13 @@ escaped strings of the action recorded i
 
 =item *
 
-allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege; 
-returns codes for allowed actions.
-
-The first argument is required, all others are optional.
-
-$priv is the privilege being checked.
-$uri contains additional information about what is being checked for access (e.g.,
-URL, course ID etc.).
-$symb is the unique resource instance identifier in a course; if needed,
-but not provided, it will be retrieved via a call to &symbread().
-$role is the role for which a priv is being checked (only used if priv is evb).
-$clientip is the user's IP address (only used when checking for access to portfolio
-files).
-$noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
-prevents recursive calls to &allowed.
-
+allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
  F: full access
  U,I,K: authentication modes (cxx only)
  '': forbidden
  1: user needs to choose course
  2: browse allowed
  A: passphrase authentication needed
- B: access temporarily blocked because of a blocking event in a course.
 
 =item *
 
@@ -13238,10 +12584,9 @@ in which case the null string is returne
 
 =item *
 
-definerole($rolename,$sysrole,$domrole,$courole,$uname,$udom) : define role;
-define a custom role rolename set privileges in format of lonTabs/roles.tab
-for system, domain, and course level. $uname and $udom are optional (current
-user's username and domain will be used when either of $uname or $udom are absent.
+definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
+role rolename set privileges in format of lonTabs/roles.tab for system, domain,
+and course level
 
 =item *
 
@@ -13272,9 +12617,9 @@ provided for types, will default to retu
 =item *
 
 in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
-user: $uname:$udom has a role in the course: $cdom_$cnum.
+user: $uname:$udom has a role in the course: $cdom_$cnum. 
 
-Additional optional arguments are: $type (if role checking is to be restricted
+Additional optional arguments are: $type (if role checking is to be restricted 
 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
@@ -13345,8 +12690,8 @@ 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 user's environment.  
-This means the invoking user must be a course coordinator or otherwise
+The course id is resolved based on the current users environment.  
+This means the envoking user must be a course coordinator or otherwise
 associated with a course.
 
 This call is essentially a wrapper for lonnet::modifyuser and
@@ -13406,20 +12751,20 @@ Inputs:
 
 modify_student_enrollment
 
-Change a student's enrollment status in a class.  The environment variable
+Change a students enrollment status in a class.  The environment variable
 'role.request.course' must be defined for this function to proceed.
 
 Inputs:
 
 =over 4
 
-=item $udom, student's domain
+=item $udom, students domain
 
-=item $uname, student's name
+=item $uname, students name
 
-=item $uid, student's user id
+=item $uid, students user id
 
-=item $first, student's first name
+=item $first, students first name
 
 =item $middle
 
@@ -13445,8 +12790,6 @@ Inputs:
 
 =item $credits, number of credits student will earn from this class
 
-=item $instsec, institutional course section code for student
-
 =back
 
 
@@ -13503,7 +12846,7 @@ 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 10 minutes.
+answers for 5 minutes.
 
 =item *
 
@@ -13512,10 +12855,6 @@ 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
@@ -13616,20 +12955,7 @@ will be stored for query
 
 =item *
 
-symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
-return symbolic list entry (all arguments optional).
-
-Args: filename is the filename (including path) for the file for which a symb
-is required; donotrecurse, if true will prevent calls to allowed() being made
-to check access status if more than one resource was found in the bighash
-(see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
-a randompick); ignorecachednull, if true will prevent a symb of '' being
-returned if $env{$cache_str} is defined as ''; checkforblock if true will
-cause possible symbs to be checked to determine if they are subject to content
-blocking, if so they will not be included as possible symbs; possibles is a
-ref to a hash, which, as a side effect, will be populated with all possible
-symbs (content blocking not tested).
-
+symbread($filename) : return symbolic list entry (filename argument optional);
 returns the data handle
 
 =item *
@@ -13639,9 +12965,9 @@ and is a possible symb for the URL in $t
 resource that the user accessed using /enc/ returns a 1 on success, 0
 on failure, user must be in a course, as it assumes the existence of
 the course initial hash, and uses $env('request.course.id'}.  The third
-arg is an optional reference to a scalar.  If this arg is passed in the
+arg is an optional reference to a scalar.  If this arg is passed in the 
 call to symbverify, it will be set to 1 if the symb has been set to be 
-encrypted; otherwise it will be null.
+encrypted; otherwise it will be null.  
 
 =item *
 
@@ -13694,13 +13020,13 @@ expirespread($uname,$udom,$stype,$usymb)
 devalidate($symb) : devalidate temporary spreadsheet calculations,
 forcing spreadsheet to reevaluate the resource scores next time.
 
-=item *
+=item * 
 
 can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
 when viewing in course context.
 
  input: six args -- filename (decluttered), course number, course domain,
-                    url, symb (if registered) and group (if this is a
+                    url, symb (if registered) and group (if this is a 
                     group item -- e.g., bulletin board, group page etc.).
 
  output: array of five scalars --
@@ -13708,15 +13034,15 @@ when viewing in course context.
          $home -- homeserver of resource (i.e., for author if published,
                                           or course if uploaded.).
          $switchserver --  1 if server switch will be needed.
-         $forceedit -- 1 if icon/link should be to go to edit mode
+         $forceedit -- 1 if icon/link should be to go to edit mode 
          $forceview -- 1 if icon/link should be to go to view mode
 
 =item *
 
 is_course_upload($file,$cnum,$cdom)
 
-Used in course context to determine if current file was uploaded to
-the course (i.e., would be found in /userfiles/docs on the course's
+Used in course context to determine if current file was uploaded to 
+the course (i.e., would be found in /userfiles/docs on the course's 
 homeserver.
 
   input: 3 args -- filename (decluttered), course number and course domain.
@@ -13730,21 +13056,15 @@ homeserver.
 
 =item *
 
-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).
-$laststore is currently only passed when cstore() is called by
-structuretags::finalize_storage().
+store($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
 
 =item *
 
-cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store 
-but uses critical subroutine
+cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
+uses critical subroutine
 
 =item *
 
@@ -13767,11 +13087,10 @@ $range should be either an integer '100'
 
 =item *
 
-putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
+putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
 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. If $tolog is true, the transaction is logged in the courselog
-with an action=PUTSTORE.
+reference
 
 =item *
 
@@ -13881,91 +13200,15 @@ server ($udom and $uhome are optional)
 
 =item * 
 
-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 $ignore_cache arg is true, or from domain's configuration.db (if available),
-or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
-
-Typical usage:
+get_domain_defaults($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. 
 
-%domdefaults = &get_domain_defaults($target_domain);
+%domdefaults = &get_auth_defaults($target_domain);
 
 =back
 
@@ -14190,8 +13433,7 @@ filelocation except for hrefs
 
 =item *
 
-declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
-also removes beginning /home/httpd/html unless /priv/ follows it.
+declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
 
 =back
 
@@ -14386,8 +13628,8 @@ Returns:
 
 get_timebased_id():
 
-Attempts to get a unique timestamp-based suffix for use with items added to a
-course via the Course Editor (e.g., folders, composite pages,
+Attempts to get a unique timestamp-based suffix for use with items added to a 
+course via the Course Editor (e.g., folders, composite pages, 
 group bulletin boards).
 
 Args: (first three required; six others optional)
@@ -14398,24 +13640,24 @@ Args: (first three required; six others
 2. keyid (alphanumeric): name of temporary locking key in hash,
    e.g., num, boardids
 
-3. namespace: name of gdbm file used to store suffixes already assigned;
+3. namespace: name of gdbm file used to store suffixes already assigned;  
    file will be named nohist_namespace.db
 
 4. cdom: domain of course; default is current course domain from %env
 
 5. cnum: course number; default is current course number from %env
 
-6. idtype: set to concat if an additional digit is to be appended to the
+6. idtype: set to concat if an additional digit is to be appended to the 
    unix timestamp to form the suffix, if the plain timestamp is already
-   in use.  Default is to not do this, but simply increment the unix
+   in use.  Default is to not do this, but simply increment the unix 
    timestamp by 1 until a unique key is obtained.
 
 7. who: holder of locking key; defaults to user:domain for user.
 
-8. locktries: number of attempts to obtain a lock (sleep of 1s before
+8. locktries: number of attempts to obtain a lock (sleep of 1s before 
    retrying); default is 3.
 
-9. maxtries: number of attempts to obtain a unique suffix; default is 20.
+9. maxtries: number of attempts to obtain a unique suffix; default is 20.  
 
 Returns: