--- loncom/lonnet/perl/lonnet.pm	2005/11/15 22:02:58	1.679
+++ loncom/lonnet/perl/lonnet.pm	2007/06/25 18:12:24	1.894
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.679 2005/11/15 22:02:58 raeburn Exp $
+# $Id: lonnet.pm,v 1.894 2007/06/25 18:12:24 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -31,28 +31,27 @@ package Apache::lonnet;
 
 use strict;
 use LWP::UserAgent();
-use HTTP::Headers;
 use HTTP::Date;
 # use Date::Parse;
-use vars 
-qw(%perlvar %hostname %badServerCache %iphost %spareid %hostdom 
-   %libserv %pr %prp $memcache %packagetab 
-   %courselogs %accesshash %userrolehash %domainrolehash $processmarker $dumpcount 
-   %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf
-   %domaindescription %domain_auth_def %domain_auth_arg_def 
-   %domain_lang_def %domain_city %domain_longi %domain_lati $tmpdir $_64bit
-   %env);
+use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
+            $_64bit %env);
+
+my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
+    %userrolehash, $processmarker, $dumpcount, %coursedombuf,
+    %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
+    %courseownerbuf, %coursetypebuf);
 
 use IO::Socket;
 use GDBM_File;
-use Apache::Constants qw(:common :http);
 use HTML::LCParser;
-use HTML::Parser;
 use Fcntl qw(:flock);
-use Storable qw(lock_store lock_nstore lock_retrieve freeze thaw nfreeze);
+use Storable qw(thaw nfreeze);
 use Time::HiRes qw( gettimeofday tv_interval );
 use Cache::Memcached;
 use Digest::MD5;
+use Math::Random;
+use LONCAPA qw(:DEFAULT :match);
+use LONCAPA::Configuration;
 
 my $readit;
 my $max_connection_retries = 10;     # Or some such value.
@@ -86,6 +85,29 @@ delayed.
 
 
 # --------------------------------------------------------------------- Logging
+{
+    my $logid;
+    sub instructor_log {
+	my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;
+	$logid++;
+	my $id=time().'00000'.$$.'00000'.$logid;
+	return &Apache::lonnet::put('nohist_'.$hash_name,
+				    { $id => {
+					'exe_uname' => $env{'user.name'},
+					'exe_udom'  => $env{'user.domain'},
+					'exe_time'  => time(),
+					'exe_ip'    => $ENV{'REMOTE_ADDR'},
+					'delflag'   => $delflag,
+					'logentry'  => $storehash,
+					'uname'     => $uname,
+					'udom'      => $udom,
+				    }
+				  },
+				    $env{'course.'.$env{'request.course.id'}.'.domain'},
+				    $env{'course.'.$env{'request.course.id'}.'.num'}
+				    );
+    }
+}
 
 sub logtouch {
     my $execdir=$perlvar{'lonDaemons'};
@@ -121,10 +143,24 @@ sub logperm {
     return 1;
 }
 
+sub create_connection {
+    my ($hostname,$lonid) = @_;
+    my $client=IO::Socket::UNIX->new(Peer    => $perlvar{'lonSockCreate'},
+				     Type    => SOCK_STREAM,
+				     Timeout => 10);
+    return 0 if (!$client);
+    print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
+    my $result = <$client>;
+    chomp($result);
+    return 1 if ($result eq 'done');
+    return 0;
+}
+
+
 # -------------------------------------------------- Non-critical communication
 sub subreply {
     my ($cmd,$server)=@_;
-    my $peerfile="$perlvar{'lonSockDir'}/$server";
+    my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
     #
     #  With loncnew process trimming, there's a timing hole between lonc server
     #  process exit and the master server picking up the listen on the AF_UNIX
@@ -145,14 +181,16 @@ sub subreply {
 	$client=IO::Socket::UNIX->new(Peer    =>"$peerfile",
 				      Type    => SOCK_STREAM,
 				      Timeout => 10);
-	if($client) {
+	if ($client) {
 	    last;		# Connected!
+	} else {
+	    &create_connection(&hostname($server),$server);
 	}
-	sleep(1);		# Try again later if failed connection.
+        sleep(1);		# Try again later if failed connection.
     }
     my $answer;
     if ($client) {
-	print $client "$cmd\n";
+	print $client "sethost:$server:$cmd\n";
 	$answer=<$client>;
 	if (!$answer) { $answer="con_lost"; }
 	chomp($answer);
@@ -164,7 +202,7 @@ sub subreply {
 
 sub reply {
     my ($cmd,$server)=@_;
-    unless (defined($hostname{$server})) { return 'no_such_host'; }
+    unless (defined(&hostname($server))) { return 'no_such_host'; }
     my $answer=subreply($cmd,$server);
     if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
        &logthis("<font color=\"blue\">WARNING:".
@@ -176,8 +214,25 @@ sub reply {
 # ----------------------------------------------------------- Send USR1 to lonc
 
 sub reconlonc {
-    my $peerfile=shift;
-    &logthis("Trying to reconnect for $peerfile");
+    my ($lonid) = @_;
+    my $hostname = &hostname($lonid);
+    if ($lonid) {
+	my $peerfile="$perlvar{'lonSockDir'}/$hostname";
+	if ($hostname && -e $peerfile) {
+	    &logthis("Trying to reconnect lonc for $lonid ($hostname)");
+	    my $client=IO::Socket::UNIX->new(Peer    => $peerfile,
+					     Type    => SOCK_STREAM,
+					     Timeout => 10);
+	    if ($client) {
+		print $client ("reset_retries\n");
+		my $answer=<$client>;
+		#reset just this one.
+	    }
+	}
+	return;
+    }
+
+    &logthis("Trying to reconnect lonc");
     my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
     if (open(my $fh,"<$loncfile")) {
 	my $loncpid=<$fh>;
@@ -186,19 +241,13 @@ sub reconlonc {
 	    &logthis("lonc at pid $loncpid responding, sending USR1");
             kill USR1 => $loncpid;
             sleep 1;
-            if (-e "$peerfile") { return; }
-            &logthis("$peerfile still not there, give it another try");
-            sleep 5;
-            if (-e "$peerfile") { return; }
-            &logthis(
-  "<font color=\"blue\">WARNING: $peerfile still not there, giving up</font>");
-        } else {
+         } else {
 	    &logthis(
                "<font color=\"blue\">WARNING:".
                " lonc at pid $loncpid not responding, giving up</font>");
         }
     } else {
-     &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
+	&logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
     }
 }
 
@@ -206,7 +255,7 @@ sub reconlonc {
 
 sub critical {
     my ($cmd,$server)=@_;
-    unless ($hostname{$server}) {
+    unless (&hostname($server)) {
         &logthis("<font color=\"blue\">WARNING:".
                " Critical message to unknown server ($server)</font>");
         return 'no_such_host';
@@ -256,9 +305,18 @@ sub critical {
     return $answer;
 }
 
-# ------------------------------------------- Transfer profile into environment
+# ------------------------------------------- check if return value is an error
 
-sub transfer_profile_to_env {
+sub error {
+    my ($result) = @_;
+    if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
+	if ($2 == 2) { return undef; }
+	return $1;
+    }
+    return undef;
+}
+
+sub convert_and_load_session_env {
     my ($lonidsdir,$handle)=@_;
     my @profile;
     {
@@ -267,132 +325,157 @@ sub transfer_profile_to_env {
 	@profile=<$idf>;
 	close($idf);
     }
-    my $envi;
-    my %Remove;
-    for ($envi=0;$envi<=$#profile;$envi++) {
-	chomp($profile[$envi]);
-	my ($envname,$envvalue)=split(/=/,$profile[$envi]);
-	$env{$envname} = $envvalue;
+    my %temp_env;
+    foreach my $line (@profile) {
+	if ($line !~ m/=/) {
+	    return 0;
+	}
+	chomp($line);
+	my ($envname,$envvalue)=split(/=/,$line,2);
+	$temp_env{&unescape($envname)} = &unescape($envvalue);
+    }
+    unlink("$lonidsdir/$handle.id");
+    if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
+	    0640)) {
+	%disk_env = %temp_env;
+	@env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
+	untie(%disk_env);
+    }
+    return 1;
+}
+
+# ------------------------------------------- Transfer profile into environment
+my $env_loaded;
+sub transfer_profile_to_env {
+    my ($lonidsdir,$handle,$force_transfer) = @_;
+    if (!$force_transfer && $env_loaded) { return; } 
+
+    if (!defined($lonidsdir)) {
+	$lonidsdir = $perlvar{'lonIDsDir'};
+    }
+    if (!defined($handle)) {
+        ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
+    }
+
+    my $convert;
+    {
+    	open(my $idf,"$lonidsdir/$handle.id");
+	flock($idf,LOCK_SH);
+	if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
+		&GDBM_READER(),0640)) {
+	    @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
+	    untie(%disk_env);
+	} else {
+	    $convert = 1;
+	}
+    }
+    if ($convert) {
+	if (!&convert_and_load_session_env($lonidsdir,$handle)) {
+	    &logthis("Failed to load session, or convert session.");
+	}
+    }
+
+    my %remove;
+    while ( my $envname = each(%env) ) {
         if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
             if ($time < time-300) {
-                $Remove{$key}++;
+                $remove{$key}++;
             }
         }
     }
+
     $env{'user.environment'} = "$lonidsdir/$handle.id";
-    foreach my $expired_key (keys(%Remove)) {
+    $env_loaded=1;
+    foreach my $expired_key (keys(%remove)) {
         &delenv($expired_key);
     }
 }
 
+sub timed_flock {
+    my ($file,$lock_type) = @_;
+    my $failed=0;
+    eval {
+	local $SIG{__DIE__}='DEFAULT';
+	local $SIG{ALRM}=sub {
+	    $failed=1;
+	    die("failed lock");
+	};
+	alarm(13);
+	flock($file,$lock_type);
+	alarm(0);
+    };
+    if ($failed) {
+	return undef;
+    } else {
+	return 1;
+    }
+}
+
 # ---------------------------------------------------------- Append Environment
 
 sub appenv {
     my %newenv=@_;
-    foreach (keys %newenv) {
-	if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
+    foreach my $key (keys(%newenv)) {
+	if (($newenv{$key}=~/^user\.role/) || ($newenv{$key}=~/^user\.priv/)) {
             &logthis("<font color=\"blue\">WARNING: ".
-                "Attempt to modify environment ".$_." to ".$newenv{$_}
+                "Attempt to modify environment ".$key." to ".$newenv{$key}
                 .'</font>');
-	    delete($newenv{$_});
+	    delete($newenv{$key});
         } else {
-            $env{$_}=$newenv{$_};
+            $env{$key}=$newenv{$key};
         }
     }
-
-    my $lockfh;
-    unless (open($lockfh,"$env{'user.environment'}")) {
-	return 'error: '.$!;
-    }
-    unless (flock($lockfh,LOCK_EX)) {
-         &logthis("<font color=\"blue\">WARNING: ".
-                  'Could not obtain exclusive lock in appenv: '.$!);
-         close($lockfh);
-         return 'error: '.$!;
-    }
-
-    my @oldenv;
-    {
-	my $fh;
-	unless (open($fh,"$env{'user.environment'}")) {
-	    return 'error: '.$!;
-	}
-	@oldenv=<$fh>;
-	close($fh);
-    }
-    for (my $i=0; $i<=$#oldenv; $i++) {
-        chomp($oldenv[$i]);
-        if ($oldenv[$i] ne '') {
-	    my ($name,$value)=split(/=/,$oldenv[$i]);
-	    unless (defined($newenv{$name})) {
-		$newenv{$name}=$value;
-	    }
-        }
-    }
-    {
-	my $fh;
-	unless (open($fh,">$env{'user.environment'}")) {
-	    return 'error';
+    open(my $env_file,$env{'user.environment'});
+    if (&timed_flock($env_file,LOCK_EX)
+	&&
+	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
+	    (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
+	while (my ($key,$value) = each(%newenv)) {
+	    $disk_env{$key} = $value;
 	}
-	my $newname;
-	foreach $newname (keys %newenv) {
-	    print $fh "$newname=$newenv{$newname}\n";
-	}
-	close($fh);
+	untie(%disk_env);
     }
-	
-    close($lockfh);
     return 'ok';
 }
 # ----------------------------------------------------- Delete from Environment
 
 sub delenv {
     my $delthis=shift;
-    my %newenv=();
     if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
         &logthis("<font color=\"blue\">WARNING: ".
                 "Attempt to delete from environment ".$delthis);
         return 'error';
     }
-    my @oldenv;
-    {
-	my $fh;
-	unless (open($fh,"$env{'user.environment'}")) {
-	    return 'error';
-	}
-	unless (flock($fh,LOCK_SH)) {
-	    &logthis("<font color=\"blue\">WARNING: ".
-		     'Could not obtain shared lock in delenv: '.$!);
-	    close($fh);
-	    return 'error: '.$!;
-	}
-	@oldenv=<$fh>;
-	close($fh);
-    }
-    {
-	my $fh;
-	unless (open($fh,">$env{'user.environment'}")) {
-	    return 'error';
-	}
-	unless (flock($fh,LOCK_EX)) {
-	    &logthis("<font color=\"blue\">WARNING: ".
-		     'Could not obtain exclusive lock in delenv: '.$!);
-	    close($fh);
-	    return 'error: '.$!;
-	}
-	foreach (@oldenv) {
-	    if ($_=~/^$delthis/) { 
-                my ($key,undef) = split('=',$_);
+    open(my $env_file,$env{'user.environment'});
+    if (&timed_flock($env_file,LOCK_EX)
+	&&
+	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
+	    (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
+	foreach my $key (keys(%disk_env)) {
+	    if ($key=~/^$delthis/) { 
                 delete($env{$key});
-            } else {
-                print $fh $_; 
+                delete($disk_env{$key});
             }
 	}
-	close($fh);
+	untie(%disk_env);
     }
     return 'ok';
 }
 
+sub get_env_multiple {
+    my ($name) = @_;
+    my @values;
+    if (defined($env{$name})) {
+        # exists is it an array
+        if (ref($env{$name})) {
+            @values=@{ $env{$name} };
+        } else {
+            $values[0]=$env{$name};
+        }
+    }
+    return(@values);
+}
+
 # ------------------------------------------ Find out current server userload
 # there is a copy in lond
 sub userload {
@@ -445,48 +528,67 @@ sub overloaderror {
 
 sub spareserver {
     my ($loadpercent,$userloadpercent,$want_server_name) = @_;
-    my $tryserver;
-    my $spareserver='';
+    my $spare_server;
     if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
-    my $lowestserver=$loadpercent > $userloadpercent?
-	             $loadpercent :  $userloadpercent;
-    foreach $tryserver (keys(%spareid)) {
-	my $loadans=&reply('load',$tryserver);
-	my $userloadans=&reply('userload',$tryserver);
-	if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
-	    next; #didn't get a number from the server
-	}
-	my $answer;
-	if ($loadans =~ /\d/) {
-	    if ($userloadans =~ /\d/) {
-		#both are numbers, pick the bigger one
-		$answer=$loadans > $userloadans?
-		    $loadans :  $userloadans;
-	    } else {
-		$answer = $loadans;
-	    }
-	} else {
-	    $answer = $userloadans;
-	}
-	if (($answer =~ /\d/) && ($answer<$lowestserver)) {
-	    if ($want_server_name) {
-		$spareserver=$tryserver;
-	    } else {
-		$spareserver="http://$hostname{$tryserver}";
-	    }
-	    $lowestserver=$answer;
+    my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent 
+                                                     :  $userloadpercent;
+    
+    foreach my $try_server (@{ $spareid{'primary'} }) {
+	($spare_server, $lowest_load) =
+	    &compare_server_load($try_server, $spare_server, $lowest_load);
+    }
+
+    my $found_server = ($spare_server ne '' && $lowest_load < 100);
+
+    if (!$found_server) {
+	foreach my $try_server (@{ $spareid{'default'} }) {
+	    ($spare_server, $lowest_load) =
+		&compare_server_load($try_server, $spare_server, $lowest_load);
 	}
     }
-    return $spareserver;
+
+    if (!$want_server_name) {
+	$spare_server="http://".&hostname($spare_server);
+    }
+    return $spare_server;
 }
 
+sub compare_server_load {
+    my ($try_server, $spare_server, $lowest_load) = @_;
+
+    my $loadans     = &reply('load',    $try_server);
+    my $userloadans = &reply('userload',$try_server);
+
+    if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
+	next; #didn't get a number from the server
+    }
+
+    my $load;
+    if ($loadans =~ /\d/) {
+	if ($userloadans =~ /\d/) {
+	    #both are numbers, pick the bigger one
+	    $load = ($loadans > $userloadans) ? $loadans 
+		                              : $userloadans;
+	} else {
+	    $load = $loadans;
+	}
+    } else {
+	$load = $userloadans;
+    }
+
+    if (($load =~ /\d/) && ($load < $lowest_load)) {
+	$spare_server = $try_server;
+	$lowest_load  = $load;
+    }
+    return ($spare_server,$lowest_load);
+}
 # --------------------------------------------- Try to change a user's password
 
 sub changepass {
-    my ($uname,$udom,$currentpass,$newpass,$server)=@_;
+    my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
     $currentpass = &escape($currentpass);
     $newpass     = &escape($newpass);
-    my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass",
+    my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context",
 		       $server);
     if (! $answer) {
 	&logthis("No reply on password change request to $server ".
@@ -535,11 +637,17 @@ sub queryauthenticate {
 
 sub authenticate {
     my ($uname,$upass,$udom)=@_;
-    $upass=escape($upass);
-    $uname=~s/\W//g;
-    my $uhome=&homeserver($uname,$udom);
-    if (!$uhome) {
-	&logthis("User $uname at $udom is unknown in authenticate");
+    $upass=&escape($upass);
+    $uname= &LONCAPA::clean_username($uname);
+    my $uhome=&homeserver($uname,$udom,1);
+    if ((!$uhome) || ($uhome eq 'no_host')) {
+# Maybe the machine was offline and only re-appeared again recently?
+        &reconlonc();
+# One more
+	my $uhome=&homeserver($uname,$udom,1);
+	if ((!$uhome) || ($uhome eq 'no_host')) {
+	    &logthis("User $uname at $udom is unknown in authenticate");
+	}
 	return 'no_host';
     }
     my $answer=reply("encrypt:auth:$udom:$uname:$upass",$uhome);
@@ -563,18 +671,19 @@ sub homeserver {
     my $index="$uname:$udom";
 
     if (exists($homecache{$index})) { return $homecache{$index}; }
-    my $tryserver;
-    foreach $tryserver (keys %libserv) {
+
+    my %servers = &get_servers($udom,'library');
+    foreach my $tryserver (keys(%servers)) {
         next if ($ignoreBadCache ne 'true' && 
 		 exists($badServerCache{$tryserver}));
-	if ($hostdom{$tryserver} eq $udom) {
-           my $answer=reply("home:$udom:$uname",$tryserver);
-           if ($answer eq 'found') { 
-	       return $homecache{$index}=$tryserver;
-           } elsif ($answer eq 'no_host') {
-	       $badServerCache{$tryserver}=1;
-           }
-       }
+
+	my $answer=reply("home:$udom:$uname",$tryserver);
+	if ($answer eq 'found') {
+	    delete($badServerCache{$tryserver}); 
+	    return $homecache{$index}=$tryserver;
+	} elsif ($answer eq 'no_host') {
+	    $badServerCache{$tryserver}=1;
+	}
     }    
     return 'no_host';
 }
@@ -585,24 +694,22 @@ sub idget {
     my ($udom,@ids)=@_;
     my %returnhash=();
     
-    my $tryserver;
-    foreach $tryserver (keys %libserv) {
-       if ($hostdom{$tryserver} eq $udom) {
-	  my $idlist=join('&',@ids);
-          $idlist=~tr/A-Z/a-z/; 
-	  my $reply=&reply("idget:$udom:".$idlist,$tryserver);
-          my @answer=();
-          if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
-	      @answer=split(/\&/,$reply);
-          }                    ;
-          my $i;
-          for ($i=0;$i<=$#ids;$i++) {
-              if ($answer[$i]) {
-		  $returnhash{$ids[$i]}=$answer[$i];
-              } 
-          }
-       }
-    }    
+    my %servers = &get_servers($udom,'library');
+    foreach my $tryserver (keys(%servers)) {
+	my $idlist=join('&',@ids);
+	$idlist=~tr/A-Z/a-z/; 
+	my $reply=&reply("idget:$udom:".$idlist,$tryserver);
+	my @answer=();
+	if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
+	    @answer=split(/\&/,$reply);
+	}                    ;
+	my $i;
+	for ($i=0;$i<=$#ids;$i++) {
+	    if ($answer[$i]) {
+		$returnhash{$ids[$i]}=$answer[$i];
+	    } 
+	}
+    } 
     return %returnhash;
 }
 
@@ -611,8 +718,8 @@ sub idget {
 sub idrget {
     my ($udom,@unames)=@_;
     my %returnhash=();
-    foreach (@unames) {
-        $returnhash{$_}=(&userenvironment($udom,$_,'id'))[1];
+    foreach my $uname (@unames) {
+        $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
     }
     return %returnhash;
 }
@@ -622,25 +729,133 @@ sub idrget {
 sub idput {
     my ($udom,%ids)=@_;
     my %servers=();
-    foreach (keys %ids) {
-	&cput('environment',{'id'=>$ids{$_}},$udom,$_);
-        my $uhom=&homeserver($_,$udom);
+    foreach my $uname (keys(%ids)) {
+	&cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
+        my $uhom=&homeserver($uname,$udom);
         if ($uhom ne 'no_host') {
-            my $id=&escape($ids{$_});
+            my $id=&escape($ids{$uname});
             $id=~tr/A-Z/a-z/;
-            my $unam=&escape($_);
+            my $esc_unam=&escape($uname);
 	    if ($servers{$uhom}) {
-		$servers{$uhom}.='&'.$id.'='.$unam;
+		$servers{$uhom}.='&'.$id.'='.$esc_unam;
             } else {
-                $servers{$uhom}=$id.'='.$unam;
+                $servers{$uhom}=$id.'='.$esc_unam;
             }
         }
     }
-    foreach (keys %servers) {
-        &critical('idput:'.$udom.':'.$servers{$_},$_);
+    foreach my $server (keys(%servers)) {
+        &critical('idput:'.$udom.':'.$servers{$server},$server);
     }
 }
 
+# ------------------------------------------- get items from domain db files   
+
+sub get_dom {
+    my ($namespace,$storearr,$udom,$uhome)=@_;
+    my $items='';
+    foreach my $item (@$storearr) {
+        $items.=&escape($item).'&';
+    }
+    $items=~s/\&$//;
+    if (!$udom) {
+        $udom=$env{'user.domain'};
+        if (defined(&domain($udom,'primary'))) {
+            $uhome=&domain($udom,'primary');
+        } else {
+            undef($uhome);
+        }
+    } else {
+        if (!$uhome) {
+            if (defined(&domain($udom,'primary'))) {
+                $uhome=&domain($udom,'primary');
+            }
+        }
+    }
+    if ($udom && $uhome && ($uhome ne 'no_host')) {
+        my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
+        my %returnhash;
+        if ($rep eq '' || $rep =~ /^error: 2 /) {
+            return %returnhash;
+        }
+        my @pairs=split(/\&/,$rep);
+        if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
+            return @pairs;
+        }
+        my $i=0;
+        foreach my $item (@$storearr) {
+            $returnhash{$item}=&thaw_unescape($pairs[$i]);
+            $i++;
+        }
+        return %returnhash;
+    } else {
+        &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
+    }
+}
+
+# -------------------------------------------- put items in domain db files 
+
+sub put_dom {
+    my ($namespace,$storehash,$udom,$uhome)=@_;
+    if (!$udom) {
+        $udom=$env{'user.domain'};
+        if (defined(&domain($udom,'primary'))) {
+            $uhome=&domain($udom,'primary');
+        } else {
+            undef($uhome);
+        }
+    } else {
+        if (!$uhome) {
+            if (defined(&domain($udom,'primary'))) {
+                $uhome=&domain($udom,'primary');
+            }
+        }
+    } 
+    if ($udom && $uhome && ($uhome ne 'no_host')) {
+        my $items='';
+        foreach my $item (keys(%$storehash)) {
+            $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
+        }
+        $items=~s/\&$//;
+        return &reply("putdom:$udom:$namespace:$items",$uhome);
+    } else {
+        &logthis("put_dom failed - no homeserver and/or domain");
+    }
+}
+
+sub retrieve_inst_usertypes {
+    my ($udom) = @_;
+    my (%returnhash,@order);
+    if (defined(&domain($udom,'primary'))) {
+        my $uhome=&domain($udom,'primary');
+        my $rep=&reply("inst_usertypes:$udom",$uhome);
+        my ($hashitems,$orderitems) = split(/:/,$rep); 
+        my @pairs=split(/\&/,$hashitems);
+        foreach my $item (@pairs) {
+            my ($key,$value)=split(/=/,$item,2);
+            $key = &unescape($key);
+            next if ($key =~ /^error: 2 /);
+            $returnhash{$key}=&thaw_unescape($value);
+        }
+        my @esc_order = split(/\&/,$orderitems);
+        foreach my $item (@esc_order) {
+            push(@order,&unescape($item));
+        }
+    } else {
+        &logthis("get_dom failed - no primary domain server for $udom");
+    }
+    return (\%returnhash,\@order);
+}
+
+sub is_domainimage {
+    my ($url) = @_;
+    if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
+        if (&domain($1) ne '') {
+            return '1';
+        }
+    }
+    return;
+}
+
 # --------------------------------------------------- Assign a key to a student
 
 sub assign_access_key {
@@ -774,17 +989,32 @@ sub validate_access_key {
 # ------------------------------------- Find the section of student in a course
 sub devalidate_getsection_cache {
     my ($udom,$unam,$courseid)=@_;
-    $courseid=~s/\_/\//g;
-    $courseid=~s/^(\w)/\/$1/;
     my $hashid="$udom:$unam:$courseid";
     &devalidate_cache_new('getsection',$hashid);
 }
 
+sub courseid_to_courseurl {
+    my ($courseid) = @_;
+    #already url style courseid
+    return $courseid if ($courseid =~ m{^/});
+
+    if (exists($env{'course.'.$courseid.'.num'})) {
+	my $cnum = $env{'course.'.$courseid.'.num'};
+	my $cdom = $env{'course.'.$courseid.'.domain'};
+	return "/$cdom/$cnum";
+    }
+
+    my %courseinfo=&Apache::lonnet::coursedescription($courseid);
+    if (exists($courseinfo{'num'})) {
+	return "/$courseinfo{'domain'}/$courseinfo{'num'}";
+    }
+
+    return undef;
+}
+
 sub getsection {
     my ($udom,$unam,$courseid)=@_;
     my $cachetime=1800;
-    $courseid=~s/\_/\//g;
-    $courseid=~s/^(\w)/\/$1/;
 
     my $hashid="$udom:$unam:$courseid";
     my ($result,$cached)=&is_cached_new('getsection',$hashid);
@@ -805,14 +1035,13 @@ sub getsection {
     # If there is more than one expired role, choose the one which ended last.
     # If there is a role which has expired, return it.
     #
-    foreach (split(/\&/,&reply('dump:'.$udom.':'.$unam.':roles',
-                        &homeserver($unam,$udom)))) {
-        my ($key,$value)=split(/\=/,$_);
-        $key=&unescape($key);
+    $courseid = &courseid_to_courseurl($courseid);
+    my %roleshash = &dump('roles',$udom,$unam,$courseid);
+    foreach my $key (keys(%roleshash)) {
         next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
         my $section=$1;
         if ($key eq $courseid.'_st') { $section=''; }
-        my ($dummy,$end,$start)=split(/\_/,&unescape($value));
+        my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
         my $now=time;
         if (defined($end) && $end && ($now > $end)) {
             $Expired{$end}=$section;
@@ -840,11 +1069,10 @@ sub getsection {
 }
 
 sub save_cache {
-    my ($r)=@_;
-    if (! $r->is_initial_req()) { return DECLINED; }
     &purge_remembered();
+    #&Apache::loncommon::validate_page();
     undef(%env);
-    return OK;
+    undef($env_loaded);
 }
 
 my $to_remember=-1;
@@ -852,10 +1080,19 @@ my %remembered;
 my %accessed;
 my $kicks=0;
 my $hits=0;
+sub make_key {
+    my ($name,$id) = @_;
+    if (length($id) > 65 
+	&& length(&escape($id)) > 200) {
+	$id=length($id).':'.&Digest::MD5::md5_hex($id);
+    }
+    return &escape($name.':'.$id);
+}
+
 sub devalidate_cache_new {
     my ($name,$id,$debug) = @_;
     if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
-    $id=&escape($name.':'.$id);
+    $id=&make_key($name,$id);
     $memcache->delete($id);
     delete($remembered{$id});
     delete($accessed{$id});
@@ -863,7 +1100,7 @@ sub devalidate_cache_new {
 
 sub is_cached_new {
     my ($name,$id,$debug) = @_;
-    $id=&escape($name.':'.$id);
+    $id=&make_key($name,$id);
     if (exists($remembered{$id})) {
 	if ($debug) { &Apache::lonnet::logthis("Earyl return $id of $remembered{$id} "); }
 	$accessed{$id}=[&gettimeofday()];
@@ -886,7 +1123,7 @@ sub is_cached_new {
 
 sub do_cache_new {
     my ($name,$id,$value,$time,$debug) = @_;
-    $id=&escape($name.':'.$id);
+    $id=&make_key($name,$id);
     my $setvalue=$value;
     if (!defined($setvalue)) {
 	$setvalue='__undef__';
@@ -895,7 +1132,9 @@ sub do_cache_new {
 	$time=600;
     }
     if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
-    $memcache->set($id,$setvalue,$time);
+    if (!($memcache->set($id,$setvalue,$time))) {
+	&logthis("caching of id -> $id  failed");
+    }
     # need to make a copy of $value
     #&make_room($id,$value,$debug);
     return $value;
@@ -947,25 +1186,62 @@ sub userenvironment {
 sub studentphoto {
     my ($udom,$unam,$ext) = @_;
     my $home=&Apache::lonnet::homeserver($unam,$udom);
-    my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext",$home);
-    my $url="/uploaded/$udom/$unam/internal/studentphoto.".$ext;
-    if ($ret ne 'ok') {
-	return '/adm/lonKaputt/lonlogo_broken.gif';
+    if (defined($env{'request.course.id'})) {
+        if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
+            if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
+                return(&retrievestudentphoto($udom,$unam,$ext)); 
+            } else {
+                my ($result,$perm_reqd)=
+		    &Apache::lonnet::auto_photo_permission($unam,$udom);
+                if ($result eq 'ok') {
+                    if (!($perm_reqd eq 'yes')) {
+                        return(&retrievestudentphoto($udom,$unam,$ext));
+                    }
+                }
+            }
+        }
+    } else {
+        my ($result,$perm_reqd) = 
+	    &Apache::lonnet::auto_photo_permission($unam,$udom);
+        if ($result eq 'ok') {
+            if (!($perm_reqd eq 'yes')) {
+                return(&retrievestudentphoto($udom,$unam,$ext));
+            }
+        }
+    }
+    return '/adm/lonKaputt/lonlogo_broken.gif';
+}
+
+sub retrievestudentphoto {
+    my ($udom,$unam,$ext,$type) = @_;
+    my $home=&Apache::lonnet::homeserver($unam,$udom);
+    my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
+    if ($ret eq 'ok') {
+        my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
+        if ($type eq 'thumbnail') {
+            $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext"; 
+        }
+        my $tokenurl=&Apache::lonnet::tokenwrapper($url);
+        return $tokenurl;
+    } else {
+        if ($type eq 'thumbnail') {
+            return '/adm/lonKaputt/genericstudent_tn.gif';
+        } else { 
+            return '/adm/lonKaputt/lonlogo_broken.gif';
+        }
     }
-    my $tokenurl=&Apache::lonnet::tokenwrapper($url);
-    return $tokenurl;
 }
 
 # -------------------------------------------------------------------- New chat
 
 sub chatsend {
-    my ($newentry,$anon)=@_;
+    my ($newentry,$anon,$group)=@_;
     my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
     my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
     &reply('chatsend:'.$cdom.':'.$cnum.':'.
 	   &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
-		   &escape($newentry)),$chome);
+		   &escape($newentry)).':'.$group,$chome);
 }
 
 # ------------------------------------------ Find current version of a resource
@@ -1027,6 +1303,7 @@ sub repcopy {
     }
     $filename=~s/[\n\r]//g;
     my $transname="$filename.in.transfer";
+# FIXME: this should flock
     if ((-e $filename) || (-e $transname)) { return 'ok'; }
     my $remoteurl=subscribe($filename);
     if ($remoteurl =~ /^con_lost by/) {
@@ -1093,7 +1370,7 @@ sub ssi_body {
     }
     my $output=($filelink=~/^http\:/?&externalssi($filelink):
                                      &ssi($filelink,%form));
-    $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+// END LON-CAPA Internal\s*(-->)?\s||gs;
+    $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
     $output=~s/^.*?\<body[^\>]*\>//si;
     $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
     return $output;
@@ -1101,6 +1378,15 @@ sub ssi_body {
 
 # --------------------------------------------------------- Server Side Include
 
+sub absolute_url {
+    my ($host_name) = @_;
+    my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
+    if ($host_name eq '') {
+	$host_name = $ENV{'SERVER_NAME'};
+    }
+    return $protocol.$host_name;
+}
+
 sub ssi {
 
     my ($fn,%form)=@_;
@@ -1108,12 +1394,14 @@ sub ssi {
     my $ua=new LWP::UserAgent;
     
     my $request;
-    
+
+    $form{'no_update_last_known'}=1;
+
     if (%form) {
-      $request=new HTTP::Request('POST',"http://".$ENV{'HTTP_HOST'}.$fn);
+      $request=new HTTP::Request('POST',&absolute_url().$fn);
       $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
     } else {
-      $request=new HTTP::Request('GET',"http://".$ENV{'HTTP_HOST'}.$fn);
+      $request=new HTTP::Request('GET',&absolute_url().$fn);
     }
 
     $request->header(Cookie => $ENV{'HTTP_COOKIE'});
@@ -1264,15 +1552,17 @@ sub store_edited_file {
 }
 
 sub clean_filename {
-    my ($fname)=@_;
+    my ($fname,$args)=@_;
 # Replace Windows backslashes by forward slashes
     $fname=~s/\\/\//g;
-# Get rid of everything but the actual filename
-    $fname=~s/^.*\/([^\/]+)$/$1/;
+    if (!$args->{'keep_path'}) {
+        # Get rid of everything but the actual filename
+	$fname=~s/^.*\/([^\/]+)$/$1/;
+    }
 # Replace spaces by underscores
     $fname=~s/\s+/\_/g;
 # Replace all other weird characters by nothing
-    $fname=~s/[^\w\.\-]//g;
+    $fname=~s{[^/\w\.\-]}{}g;
 # Replace all .\d. sequences with _\d. so they no longer look like version
 # numbers
     $fname=~s/\.(\d+)(?=\.)/_$1/g;
@@ -1280,12 +1570,26 @@ sub clean_filename {
 }
 
 # --------------- Take an uploaded file and put it into the userfiles directory
-# input: name of form element, coursedoc=1 means this is for the course
-# output: url of file in userspace
+# input: $formname - the contents of the file are in $env{"form.$formname"}
+#                    the desired filenam is in $env{"form.$formname.filename"}
+#        $coursedoc - if true up to the current course
+#                     if false
+#        $subdir - directory in userfile to store the file into
+#        $parser - instruction to parse file for objects ($parser = parse)    
+#        $allfiles - reference to hash for embedded objects
+#        $codebase - reference to hash for codebase of java objects
+#        $desuname - username for permanent storage of uploaded file
+#        $dsetudom - domain for permanaent storage of uploaded file
+#        $thumbwidth - width (pixels) of thumbnail to make for uploaded image 
+#        $thumbheight - height (pixels) of thumbnail to make for uploaded image
+# 
+# output: url of file in userspace, or error: <message> 
+#             or /adm/notfound.html if failure to upload occurse
 
 
 sub userfileupload {
-    my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase)=@_;
+    my ($formname,$coursedoc,$subdir,$parser,$allfiles,$codebase,$destuname,
+        $destudom,$thumbwidth,$thumbheight)=@_;
     if (!defined($subdir)) { $subdir='unknown'; }
     my $fname=$env{'form.'.$formname.'.filename'};
     $fname=&clean_filename($fname);
@@ -1306,8 +1610,24 @@ sub userfileupload {
         open(my $fh,'>'.$fullpath.'/'.$fname);
         print $fh $env{'form.'.$formname};
         close($fh);
-        return $fullpath.'/'.$fname; 
+        return $fullpath.'/'.$fname;
+    } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) { #files uploaded to create course page are handled differently
+        my $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
+                       '_'.$env{'user.domain'}.'/pending';
+        my @parts=split(/\//,$filepath);
+        my $fullpath = $perlvar{'lonDaemons'};
+        for (my $i=0;$i<@parts;$i++) {
+            $fullpath .= '/'.$parts[$i];
+            if ((-e $fullpath)!=1) {
+                mkdir($fullpath,0777);
+            }
+        }
+        open(my $fh,'>'.$fullpath.'/'.$fname);
+        print $fh $env{'form.'.$formname};
+        close($fh);
+        return $fullpath.'/'.$fname;
     }
+    
 # Create the directory if not present
     $fname="$subdir/$fname";
     if ($coursedoc) {
@@ -1316,26 +1636,39 @@ sub userfileupload {
         if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
             return &finishuserfileupload($docuname,$docudom,
 					 $formname,$fname,$parser,$allfiles,
-					 $codebase);
+					 $codebase,$thumbwidth,$thumbheight);
         } else {
             $fname=$env{'form.folder'}.'/'.$fname;
             return &process_coursefile('uploaddoc',$docuname,$docudom,
 				       $fname,$formname,$parser,
 				       $allfiles,$codebase);
         }
+    } elsif (defined($destuname)) {
+        my $docuname=$destuname;
+        my $docudom=$destudom;
+	return &finishuserfileupload($docuname,$docudom,$formname,$fname,
+				     $parser,$allfiles,$codebase,
+                                     $thumbwidth,$thumbheight);
+        
     } else {
         my $docuname=$env{'user.name'};
         my $docudom=$env{'user.domain'};
-	return &finishuserfileupload($docuname,$docudom,$formname,
-				     $fname,$parser,$allfiles,$codebase);
+        if (exists($env{'form.group'})) {
+            $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
+            $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+        }
+	return &finishuserfileupload($docuname,$docudom,$formname,$fname,
+				     $parser,$allfiles,$codebase,
+                                     $thumbwidth,$thumbheight);
     }
 }
 
 sub finishuserfileupload {
-    my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase) = @_;
+    my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
+        $thumbwidth,$thumbheight) = @_;
     my $path=$docudom.'/'.$docuname.'/';
     my $filepath=$perlvar{'lonDocRoot'};
-    my ($fnamepath,$file);
+    my ($fnamepath,$file,$fetchthumb);
     $file=$fname;
     if ($fname=~m|/|) {
         ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
@@ -1351,8 +1684,16 @@ sub finishuserfileupload {
     }
 # Save the file
     {
-	open(FH,'>'.$filepath.'/'.$file);
-	print FH $env{'form.'.$formname};
+	if (!open(FH,'>'.$filepath.'/'.$file)) {
+	    &logthis('Failed to create '.$filepath.'/'.$file);
+	    print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
+	    return '/adm/notfound.html';
+	}
+	if (!print FH ($env{'form.'.$formname})) {
+	    &logthis('Failed to write to '.$filepath.'/'.$file);
+	    print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
+	    return '/adm/notfound.html';
+	}
 	close(FH);
     }
     if ($parser eq 'parse') {
@@ -1363,11 +1704,28 @@ sub finishuserfileupload {
 		     ' for embedded media: '.$parse_result); 
         }
     }
+    if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
+        my $input = $filepath.'/'.$file;
+        my $output = $filepath.'/'.'tn-'.$file;
+        my $thumbsize = $thumbwidth.'x'.$thumbheight;
+        system("convert -sample $thumbsize $input $output");
+        if (-e $filepath.'/'.'tn-'.$file) {
+            $fetchthumb  = 1; 
+        }
+    }
+ 
 # Notify homeserver to grep it
 #
     my $docuhome=&homeserver($docuname,$docudom);
     my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
     if ($fetchresult eq 'ok') {
+        if ($fetchthumb) {
+            my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
+            if ($thumbresult ne 'ok') {
+                &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
+                         $docuhome.': '.$thumbresult);
+            }
+        }
 #
 # Return the URL to it
         return '/uploaded/'.$path.$file;
@@ -1375,7 +1733,7 @@ sub finishuserfileupload {
         &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
 		 ': '.$fetchresult);
         return '/adm/notfound.html';
-    }    
+    }
 }
 
 sub extract_embedded_items {
@@ -1399,13 +1757,16 @@ sub extract_embedded_items {
     while (my $t=$p->get_token()) {
 	if ($t->[0] eq 'S') {
 	    my ($tagname, $attr) = ($t->[1],$t->[2]);
-	    push (@state, $tagname);
+	    push(@state, $tagname);
             if (lc($tagname) eq 'allow') {
                 &add_filetype($allfiles,$attr->{'src'},'src');
             }
 	    if (lc($tagname) eq 'img') {
 		&add_filetype($allfiles,$attr->{'src'},'src');
 	    }
+	    if (lc($tagname) eq 'a') {
+		&add_filetype($allfiles,$attr->{'href'},'href');
+	    }
             if (lc($tagname) eq 'script') {
                 if ($attr->{'archive'} =~ /\.jar$/i) {
                     &add_filetype($allfiles,$attr->{'archive'},'archive');
@@ -1495,7 +1856,20 @@ sub removeuploadedurl {
 sub removeuserfile {
     my ($docuname,$docudom,$fname)=@_;
     my $home=&homeserver($docuname,$docudom);
-    return &reply("removeuserfile:$docudom/$docuname/$fname",$home);
+    my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
+    if ($result eq 'ok') {
+        if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
+            my $metafile = $fname.'.meta';
+            my $metaresult = &removeuserfile($docuname,$docudom,$metafile); 
+	    my $url = "/uploaded/$docudom/$docuname/$fname";
+            my ($file,$group) = (&parse_portfolio_url($url))[3,4];
+            my $sqlresult = 
+                &update_portfolio_table($docuname,$docudom,$file,
+                                        'portfolio_metadata',$group,
+                                        'delete');
+        }
+    }
+    return $result;
 }
 
 sub mkdiruserfile {
@@ -1507,8 +1881,23 @@ sub mkdiruserfile {
 sub renameuserfile {
     my ($docuname,$docudom,$old,$new)=@_;
     my $home=&homeserver($docuname,$docudom);
-    return &reply("renameuserfile:$docudom:$docuname:".&escape("$old").':'.
-		  &escape("$new"),$home);
+    my $result = &reply("renameuserfile:$docudom:$docuname:".
+                        &escape("$old").':'.&escape("$new"),$home);
+    if ($result eq 'ok') {
+        if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
+            my $oldmeta = $old.'.meta';
+            my $newmeta = $new.'.meta';
+            my $metaresult = 
+                &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
+	    my $url = "/uploaded/$docudom/$docuname/$old";
+            my ($file,$group) = (&parse_portfolio_url($url))[3,4];
+            my $sqlresult = 
+                &update_portfolio_table($docuname,$docudom,$file,
+                                        'portfolio_metadata',$group,
+                                        'delete');
+        }
+    }
+    return $result;
 }
 
 # ------------------------------------------------------------------------- Log
@@ -1534,8 +1923,7 @@ sub flushcourselogs {
 # times and course titles for all courseids
 #
     my %courseidbuffer=();
-    foreach (keys %courselogs) {
-        my $crsid=$_;
+    foreach my $crsid (keys %courselogs) {
         if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
 		          &escape($courselogs{$crsid}),
 		          $coursehombuf{$crsid}) eq 'ok') {
@@ -1551,19 +1939,20 @@ sub flushcourselogs {
         if ($courseidbuffer{$coursehombuf{$crsid}}) {
            $courseidbuffer{$coursehombuf{$crsid}}.='&'.
 			 &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
-                         ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
+                         ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
         } else {
            $courseidbuffer{$coursehombuf{$crsid}}=
 			 &escape($crsid).'='.&escape($coursedescrbuf{$crsid}).
-                         ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid});
+                         ':'.&escape($courseinstcodebuf{$crsid}).':'.&escape($courseownerbuf{$crsid}).':'.&escape($coursetypebuf{$crsid});
         }
     }
 #
 # Write course id database (reverse lookup) to homeserver of courses 
 # Is used in pickcourse
 #
-    foreach (keys %courseidbuffer) {
-        &courseidput($hostdom{$_},$courseidbuffer{$_},$_);
+    foreach my $crs_home (keys(%courseidbuffer)) {
+        &courseidput(&host_domain($crs_home),$courseidbuffer{$crs_home},
+		     $crs_home);
     }
 #
 # File accesses
@@ -1572,7 +1961,8 @@ sub flushcourselogs {
     foreach my $entry (keys(%accesshash)) {
         if ($entry =~ /___count$/) {
             my ($dom,$name);
-            ($dom,$name,undef)=($entry=~m:___(\w+)/(\w+)/(.*)___count$:);
+            ($dom,$name,undef)=
+		($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
             if (! defined($dom) || $dom eq '' || 
                 ! defined($name) || $name eq '') {
                 my $cid = $env{'request.course.id'};
@@ -1593,7 +1983,7 @@ sub flushcourselogs {
                 }
             }
         } else {
-            my ($dom,$name) = ($entry=~m:___(\w+)/(\w+)/(.*)___(\w+)$:);
+            my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
             my %temphash=($entry => $accesshash{$entry});
             if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
                 delete $accesshash{$entry};
@@ -1604,8 +1994,7 @@ sub flushcourselogs {
 # Roles
 # Reverse lookup of user roles for course faculty/staff and co-authorship
 #
-    foreach (keys %userrolehash) {
-        my $entry=$_;
+    foreach my $entry (keys(%userrolehash)) {
         my ($role,$uname,$udom,$runame,$rudom,$rsec)=
 	    split(/\:/,$entry);
         if (&Apache::lonnet::put('nohist_userroles',
@@ -1630,13 +2019,12 @@ sub flushcourselogs {
         delete $domainrolehash{$entry};
     }
     foreach my $dom (keys(%domrolebuffer)) {
-        foreach my $tryserver (keys %libserv) {
-            if ($hostdom{$tryserver} eq $dom) {
-                unless (&reply('domroleput:'.$dom.':'.
-                  $domrolebuffer{$dom},$tryserver) eq 'ok') {
-                    &logthis('Put of domain roles failed for '.$dom.' and  '.$tryserver);
-                }
-            }
+	my %servers = &get_servers($dom,'library');
+	foreach my $tryserver (keys(%servers)) {
+	    unless (&reply('domroleput:'.$dom.':'.
+			   $domrolebuffer{$dom},$tryserver) eq 'ok') {
+		&logthis('Put of domain roles failed for '.$dom.' and  '.$tryserver);
+	    }
         }
     }
     $dumpcount++;
@@ -1658,6 +2046,8 @@ sub courselog {
        $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
     $courseownerbuf{$env{'request.course.id'}}=
        $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
+    $coursetypebuf{$env{'request.course.id'}}=
+       $env{'course.'.$env{'request.course.id'}.'.type'};
     if (defined $courselogs{$env{'request.course.id'}}) {
 	$courselogs{$env{'request.course.id'}}.='&'.$what;
     } else {
@@ -1675,9 +2065,9 @@ sub courseacclog {
     if ($fnsymb=~/(problem|exam|quiz|assess|survey|form|task|page)$/) {
         $what.=':POST';
         # FIXME: Probably ought to escape things....
-	foreach (keys %env) {
-            if ($_=~/^form\.(.*)/) {
-		$what.=':'.$1.'='.$env{$_};
+	foreach my $key (keys(%env)) {
+            if ($key=~/^form\.(.*)/) {
+		$what.=':'.$1.'='.$env{$key};
             }
         }
     } elsif ($fnsymb =~ m:^/adm/searchcat:) {
@@ -1739,27 +2129,24 @@ sub get_course_adv_roles {
     $cid=$env{'request.course.id'} unless (defined($cid));
     my %coursehash=&coursedescription($cid);
     my %nothide=();
-    foreach (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
-	$nothide{join(':',split(/[\@\:]/,$_))}=1;
+    foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
+	$nothide{join(':',split(/[\@\:]/,$user))}=1;
     }
     my %returnhash=();
     my %dumphash=
             &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
     my $now=time;
-    foreach (keys %dumphash) {
-	my ($tend,$tstart)=split(/\:/,$dumphash{$_});
+    foreach my $entry (keys %dumphash) {
+	my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
         if (($tstart) && ($tstart<0)) { next; }
         if (($tend) && ($tend<$now)) { next; }
         if (($tstart) && ($now<$tstart)) { next; }
-        my ($role,$username,$domain,$section)=split(/\:/,$_);
+        my ($role,$username,$domain,$section)=split(/\:/,$entry);
 	if ($username eq '' || $domain eq '') { next; }
 	if ((&privileged($username,$domain)) && 
 	    (!$nothide{$username.':'.$domain})) { next; }
 	if ($role eq 'cr') { next; }
         my $key=&plaintext($role);
-	if ($role =~ /^cr/) {
-	    $key=(split('/',$role))[3];
-	}
         if ($section) { $key.=' (Sec/Grp '.$section.')'; }
         if ($returnhash{$key}) {
 	    $returnhash{$key}.=','.$username.':'.$domain;
@@ -1771,21 +2158,61 @@ sub get_course_adv_roles {
 }
 
 sub get_my_roles {
-    my ($uname,$udom)=@_;
+    my ($uname,$udom,$context,$types,$roles,$roledoms)=@_;
     unless (defined($uname)) { $uname=$env{'user.name'}; }
     unless (defined($udom)) { $udom=$env{'user.domain'}; }
-    my %dumphash=
+    my %dumphash;
+    if ($context eq 'userroles') { 
+        %dumphash = &dump('roles',$udom,$uname);
+    } else {
+        %dumphash=
             &dump('nohist_userroles',$udom,$uname);
+    }
     my %returnhash=();
     my $now=time;
-    foreach (keys %dumphash) {
-	my ($tend,$tstart)=split(/\:/,$dumphash{$_});
+    foreach my $entry (keys(%dumphash)) {
+        my ($role,$tend,$tstart);
+        if ($context eq 'userroles') {
+	    ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
+        } else {
+            ($tend,$tstart)=split(/\:/,$dumphash{$entry});
+        }
         if (($tstart) && ($tstart<0)) { next; }
-        if (($tend) && ($tend<$now)) { next; }
-        if (($tstart) && ($now<$tstart)) { next; }
-        my ($role,$username,$domain,$section)=split(/\:/,$_);
+        my $status = 'active';
+        if (($tend) && ($tend<$now)) {
+            $status = 'previous';
+        } 
+        if (($tstart) && ($now<$tstart)) {
+            $status = 'future';
+        }
+        if (ref($types) eq 'ARRAY') {
+            if (!grep(/^\Q$status\E$/,@{$types})) {
+                next;
+            } 
+        } else {
+            if ($status ne 'active') {
+                next;
+            }
+        }
+        my ($rolecode,$username,$domain,$section,$area);
+        if ($context eq 'userroles') {
+            ($area,$rolecode) = split(/_/,$entry);
+            (undef,$domain,$username,$section) = split(/\//,$area);
+        } else {
+            ($role,$username,$domain,$section) = split(/\:/,$entry);
+        }
+        if (ref($roledoms) eq 'ARRAY') {
+            if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
+                next;
+            }
+        }
+        if (ref($roles) eq 'ARRAY') {
+            if (!grep(/^\Q$role\E$/,@{$roles})) {
+                next;
+            }
+        }
 	$returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
-     }
+    }
     return %returnhash;
 }
 
@@ -1795,7 +2222,7 @@ sub get_my_roles {
 
 sub postannounce {
     my ($server,$text)=@_;
-    unless (&allowed('psa',$hostdom{$server})) { return 'refused'; }
+    unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
     unless ($text=~/\w/) { $text=''; }
     return &reply('setannounce:'.&escape($text),$server);
 }
@@ -1804,7 +2231,7 @@ sub getannounce {
 
     if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
 	my $announcement='';
-	while (<$fh>) { $announcement .=$_; }
+	while (my $line = <$fh>) { $announcement .= $line; }
 	close($fh);
 	if ($announcement=~/\w/) { 
 	    return 
@@ -1828,18 +2255,23 @@ sub courseidput {
 }
 
 sub courseiddump {
-    my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref)=@_;
+    my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;
     my %returnhash=();
     unless ($domfilter) { $domfilter=''; }
-    foreach my $tryserver (keys %libserv) {
-        if ( ($hostidflag == 1 && grep/^$tryserver$/,@{$hostidref}) || (!defined($hostidflag)) ) {
-	    if ((!$domfilter) || ($hostdom{$tryserver} eq $domfilter)) {
-	        foreach (
-                 split(/\&/,&reply('courseiddump:'.$hostdom{$tryserver}.':'.
+    my %libserv = &all_library();
+    foreach my $tryserver (keys(%libserv)) {
+        if ( (  $hostidflag == 1 
+	        && grep(/^\Q$tryserver\E$/,@{$hostidref}) ) 
+	     || (!defined($hostidflag)) ) {
+
+	    if ($domfilter eq ''
+		|| (&host_domain($tryserver) eq $domfilter)) {
+	        foreach my $line (
+                 split(/\&/,&reply('courseiddump:'.&host_domain($tryserver).':'.
 			       $sincefilter.':'.&escape($descfilter).':'.
-                               &escape($instcodefilter).':'.&escape($ownerfilter).':'.&escape($coursefilter),
+                               &escape($instcodefilter).':'.&escape($ownerfilter).':'.&escape($coursefilter).':'.&escape($typefilter).':'.&escape($regexp_ok),
                                $tryserver))) {
-		    my ($key,$value)=split(/\=/,$_);
+		    my ($key,$value)=split(/\=/,$line,2);
                     if (($key) && ($value)) {
 		        $returnhash{&unescape($key)}=$value;
                     }
@@ -1853,28 +2285,26 @@ sub courseiddump {
 # ---------------------------------------------------------- DC e-mail
 
 sub dcmailput {
-    my ($domain,$msgid,$contents,$server)=@_;
+    my ($domain,$msgid,$message,$server)=@_;
     my $status = &Apache::lonnet::critical(
-       'dcmailput:'.$domain.':'.&Apache::lonnet::escape($msgid).'='.
-       &Apache::lonnet::escape($$contents{$server}),$server);
+       'dcmailput:'.$domain.':'.&escape($msgid).'='.
+       &escape($message),$server);
     return $status;
 }
 
 sub dcmaildump {
     my ($dom,$startdate,$enddate,$senders) = @_;
-    my %returnhash=(); 
-    foreach my $tryserver (keys(%libserv)) {
-        if ($hostdom{$tryserver} eq $dom) {
-            %{$returnhash{$tryserver}}=();
-	    my $cmd='dcmaildump:'.$dom.':'.
-		&escape($startdate).':'.&escape($enddate).':';
-	    my @esc_senders=map { &escape($_)} @$senders;
-	    $cmd.=&escape(join('&',@esc_senders));
-	    foreach (split(/\&/,&reply($cmd,$tryserver))) {
-                my ($key,$value) = split(/\=/,$_);
-                if (($key) && ($value)) {
-                    $returnhash{$tryserver}{&unescape($key)} = &unescape($value);
-                }
+    my %returnhash=();
+
+    if (defined(&domain($dom,'primary'))) {
+        my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
+                                                         &escape($enddate).':';
+	my @esc_senders=map { &escape($_)} @$senders;
+	$cmd.=&escape(join('&',@esc_senders));
+	foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
+            my ($key,$value) = split(/\=/,$line,2);
+            if (($key) && ($value)) {
+                $returnhash{&unescape($key)} = &unescape($value);
             }
         }
     }
@@ -1892,19 +2322,19 @@ sub get_domain_roles {
     }
     my $rolelist = join(':',@{$roles});
     my %personnel = ();
-    foreach my $tryserver (keys(%libserv)) {
-        if ($hostdom{$tryserver} eq $dom) {
-            %{$personnel{$tryserver}}=();
-            foreach (
-                split(/\&/,&reply('domrolesdump:'.$dom.':'.
-                   &escape($startdate).':'.&escape($enddate).':'.
-                   &escape($rolelist), $tryserver))) {
-                my($key,$value) = split(/\=/,$_);
-                if (($key) && ($value)) {
-                    $personnel{$tryserver}{&unescape($key)} = &unescape($value);
-                }
-            }
-        }
+
+    my %servers = &get_servers($dom,'library');
+    foreach my $tryserver (keys(%servers)) {
+	%{$personnel{$tryserver}}=();
+	foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
+					    &escape($startdate).':'.
+					    &escape($enddate).':'.
+					    &escape($rolelist), $tryserver))) {
+	    my ($key,$value) = split(/\=/,$line,2);
+	    if (($key) && ($value)) {
+		$personnel{$tryserver}{&unescape($key)} = &unescape($value);
+	    }
+	}
     }
     return %personnel;
 }
@@ -1913,7 +2343,7 @@ sub get_domain_roles {
 
 sub get_first_access {
     my ($type,$argsymb)=@_;
-    my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
+    my ($symb,$courseid,$udom,$uname)=&whichuser();
     if ($argsymb) { $symb=$argsymb; }
     my ($map,$id,$res)=&decode_symb($symb);
     if ($type eq 'map') {
@@ -1927,7 +2357,7 @@ sub get_first_access {
 
 sub set_first_access {
     my ($type)=@_;
-    my ($symb,$courseid,$udom,$uname)=&Apache::lonxml::whichuser();
+    my ($symb,$courseid,$udom,$uname)=&whichuser();
     my ($map,$id,$res)=&decode_symb($symb);
     if ($type eq 'map') {
 	$res=&symbread($map);
@@ -1994,7 +2424,7 @@ sub checkin {
     my $now=time;
     my ($ta,$tb,$lonhost)=split(/\*/,$token);
     $lonhost=~tr/A-Z/a-z/;
-    my $dtoken=$ta.'_'.$hostname{$lonhost}.'_'.$tb;
+    my $dtoken=$ta.'_'.&hostname($lonhost).'_'.$tb;
     $dtoken=~s/\W/\_/g;
     my ($dummy,$tuname,$tudom,$tcrsid,$symb,$chtim,$rmaddr)=
                  split(/\&/,&unescape(&reply('tmpget:'.$dtoken,$lonhost)));
@@ -2121,27 +2551,27 @@ sub hash2str {
 sub hashref2str {
   my ($hashref)=@_;
   my $result='__HASH_REF__';
-  foreach (sort(keys(%$hashref))) {
-    if (ref($_) eq 'ARRAY') {
-      $result.=&arrayref2str($_).'=';
-    } elsif (ref($_) eq 'HASH') {
-      $result.=&hashref2str($_).'=';
-    } elsif (ref($_)) {
+  foreach my $key (sort(keys(%$hashref))) {
+    if (ref($key) eq 'ARRAY') {
+      $result.=&arrayref2str($key).'=';
+    } elsif (ref($key) eq 'HASH') {
+      $result.=&hashref2str($key).'=';
+    } elsif (ref($key)) {
       $result.='=';
-      #print("Got a ref of ".(ref($_))." skipping.");
+      #print("Got a ref of ".(ref($key))." skipping.");
     } else {
-	if ($_) {$result.=&escape($_).'=';} else { last; }
+	if ($key) {$result.=&escape($key).'=';} else { last; }
     }
 
-    if(ref($hashref->{$_}) eq 'ARRAY') {
-      $result.=&arrayref2str($hashref->{$_}).'&';
-    } elsif(ref($hashref->{$_}) eq 'HASH') {
-      $result.=&hashref2str($hashref->{$_}).'&';
-    } elsif(ref($hashref->{$_})) {
+    if(ref($hashref->{$key}) eq 'ARRAY') {
+      $result.=&arrayref2str($hashref->{$key}).'&';
+    } elsif(ref($hashref->{$key}) eq 'HASH') {
+      $result.=&hashref2str($hashref->{$key}).'&';
+    } elsif(ref($hashref->{$key})) {
        $result.='&';
-      #print("Got a ref of ".(ref($hashref->{$_}))." skipping.");
+      #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
     } else {
-      $result.=&escape($hashref->{$_}).'&';
+      $result.=&escape($hashref->{$key}).'&';
     }
   }
   $result=~s/\&$//;
@@ -2421,8 +2851,8 @@ sub store {
     $$storehash{'host'}=$perlvar{'lonHostID'};
 
     my $namevalue='';
-    foreach (keys %$storehash) {
-        $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
+    foreach my $key (keys(%$storehash)) {
+        $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
     }
     $namevalue=~s/\&$//;
     &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
@@ -2457,8 +2887,8 @@ sub cstore {
     $$storehash{'host'}=$perlvar{'lonHostID'};
 
     my $namevalue='';
-    foreach (keys %$storehash) {
-        $namevalue.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
+    foreach my $key (keys(%$storehash)) {
+        $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
     }
     $namevalue=~s/\&$//;
     &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
@@ -2490,14 +2920,14 @@ sub restore {
     my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
 
     my %returnhash=();
-    foreach (split(/\&/,$answer)) {
-	my ($name,$value)=split(/\=/,$_);
+    foreach my $line (split(/\&/,$answer)) {
+	my ($name,$value)=split(/\=/,$line);
         $returnhash{&unescape($name)}=&thaw_unescape($value);
     }
     my $version;
     for ($version=1;$version<=$returnhash{'version'};$version++) {
-       foreach (split(/\:/,$returnhash{$version.':keys'})) {
-          $returnhash{$_}=$returnhash{$version.':'.$_};
+       foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
+          $returnhash{$item}=$returnhash{$version.':'.$item};
        }
     }
     return %returnhash;
@@ -2506,7 +2936,7 @@ sub restore {
 # ---------------------------------------------------------- Course Description
 
 sub coursedescription {
-    my $courseid=shift;
+    my ($courseid,$args)=@_;
     $courseid=~s/^\///;
     $courseid=~s/\_/\//g;
     my ($cdomain,$cnum)=split(/\//,$courseid);
@@ -2516,13 +2946,37 @@ sub coursedescription {
     # trying and trying and trying to get the course description.
     my %envhash=();
     my %returnhash=();
-    $envhash{'course.'.$normalid.'.last_cache'}=time;
+    
+    my $expiretime=600;
+    if ($env{'request.course.id'} eq $normalid) {
+	$expiretime=120;
+    }
+
+    my $prefix='course.'.$cdomain.'_'.$cnum.'.';
+    if (!$args->{'freshen_cache'}
+	&& ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
+	foreach my $key (keys(%env)) {
+	    next if ($key !~ /^\Q$prefix\E(.*)/);
+	    my ($setting) = $1;
+	    $returnhash{$setting} = $env{$key};
+	}
+	return %returnhash;
+    }
+
+    # get the data agin
+    if (!$args->{'one_time'}) {
+	$envhash{'course.'.$normalid.'.last_cache'}=time;
+    }
+
     if ($chome ne 'no_host') {
        %returnhash=&dump('environment',$cdomain,$cnum);
        if (!exists($returnhash{'con_lost'})) {
            $returnhash{'home'}= $chome;
 	   $returnhash{'domain'} = $cdomain;
 	   $returnhash{'num'} = $cnum;
+           if (!defined($returnhash{'type'})) {
+               $returnhash{'type'} = 'Course';
+           }
            while (my ($name,$value) = each %returnhash) {
                $envhash{'course.'.$normalid.'.'.$name}=$value;
            }
@@ -2534,7 +2988,9 @@ sub coursedescription {
            $envhash{'course.'.$normalid.'.num'}=$cnum;
        }
     }
-    &appenv(%envhash);
+    if (!$args->{'one_time'}) {
+	&appenv(%envhash);
+    }
     return %returnhash;
 }
 
@@ -2547,9 +3003,9 @@ sub privileged {
     if (($rolesdump eq 'con_lost') || ($rolesdump eq '')) { return 0; }
     my $now=time;
     if ($rolesdump ne '') {
-        foreach (split(/&/,$rolesdump)) {
-	    if ($_!~/^rolesdef_/) {
-		my ($area,$role)=split(/=/,$_);
+        foreach my $entry (split(/&/,$rolesdump)) {
+	    if ($entry!~/^rolesdef_/) {
+		my ($area,$role)=split(/=/,$entry);
 		$area=~s/\_\w\w$//;
 		my ($trole,$tend,$tstart)=split(/_/,$role);
 		if (($trole eq 'dc') || ($trole eq 'su')) {
@@ -2577,18 +3033,18 @@ sub rolesinit {
     my %allroles=();
     my %allgroups=();   
     my $now=time;
-    my $userroles="user.login.time=$now\n";
+    my %userroles = ('user.login.time' => $now);
     my $group_privs;
 
     if ($rolesdump ne '') {
-        foreach (split(/&/,$rolesdump)) {
-	  if ($_!~/^rolesdef_/) {
-            my ($area,$role)=split(/=/,$_);
+        foreach my $entry (split(/&/,$rolesdump)) {
+	  if ($entry!~/^rolesdef_/) {
+            my ($area,$role)=split(/=/,$entry);
 	    $area=~s/\_\w\w$//;
             my ($trole,$tend,$tstart,$group_privs);
 	    if ($role=~/^cr/) { 
-		if ($role=~m|^(cr/\w+/\w+/[a-zA-Z0-9]+)_(.*)$|) {
-		    ($trole,my $trest)=($role=~m|^(cr/\w+/\w+/[a-zA-Z0-9]+)_(.*)$|);
+		if ($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
+		    ($trole,my $trest)=($role=~m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|);
 		    ($tend,$tstart)=split('_',$trest);
 		} else {
 		    $trole=$role;
@@ -2600,7 +3056,9 @@ sub rolesinit {
 	    } else {
 		($trole,$tend,$tstart)=split(/_/,$role);
 	    }
-            $userroles.=&set_arearole($trole,$area,$tstart,$tend,$domain,$username);
+	    my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
+					 $username);
+	    @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
             if (($tend!=0) && ($tend<$now)) { $trole=''; }
             if (($tstart!=0) && ($tstart>$now)) { $trole=''; }
             if (($area ne '') && ($trole ne '')) {
@@ -2616,26 +3074,26 @@ sub rolesinit {
             }
           }
         }
-        my ($author,$adv) = &set_userprivs(\$userroles,\%allroles,\%allgroups);
-        $userroles.='user.adv='.$adv."\n".
-	            'user.author='.$author."\n";
+        my ($author,$adv) = &set_userprivs(\%userroles,\%allroles,\%allgroups);
+        $userroles{'user.adv'}    = $adv;
+	$userroles{'user.author'} = $author;
         $env{'user.adv'}=$adv;
     }
-    return $userroles;  
+    return \%userroles;  
 }
 
 sub set_arearole {
     my ($trole,$area,$tstart,$tend,$domain,$username) = @_;
 # log the associated role with the area
     &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
-    return 'user.role.'.$trole.'.'.$area.'='.$tstart.'.'.$tend."\n";
+    return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
 }
 
 sub custom_roleprivs {
     my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
     my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
     my $homsvr=homeserver($rauthor,$rdomain);
-    if ($hostname{$homsvr} ne '') {
+    if (&hostname($homsvr) ne '') {
         my ($rdummy,$roledef)=
             &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
         if (($rdummy ne 'con_lost') && ($roledef ne '')) {
@@ -2665,7 +3123,7 @@ sub group_roleprivs {
     if (($tend!=0) && ($tend<$now)) { $access = 0; }
     if (($tstart!=0) && ($tstart>$now)) { $access=0; }
     if ($access) {
-        my ($course,$group) = ($area =~ m|(/\w+/\w+)/([^/]+)$|);
+        my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
         $$allgroups{$course}{$group} .=':'.$group_privs;
     }
 }
@@ -2693,35 +3151,33 @@ sub set_userprivs {
     my $author=0;
     my $adv=0;
     my %grouproles = ();
-    my %groups_checked = ();
     if (keys(%{$allgroups}) > 0) {
         foreach my $role (keys %{$allroles}) {
-            my ($trole,$area);
-            if ($role =~ m|^(\w+)\.(/\w+/\w+)|) {
+            my ($trole,$area,$sec,$extendedarea);
+            if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
                 $trole = $1;
                 $area = $2;
-                unless ($groups_checked{$area}) {
-                    $groups_checked{$area} = 1;
-                    if (exists($$allgroups{$area})) {
-                        foreach my $group (keys(%{$$allgroups{$area}})) {
-                            my $spec = $trole.'.'.$area;
-                            $grouproles{$spec.'.'.$area.'/'.$group} = 
-                                                    $$allgroups{$area}{$group};
-                        }
+                $sec = $3;
+                $extendedarea = $area.$sec;
+                if (exists($$allgroups{$area})) {
+                    foreach my $group (keys(%{$$allgroups{$area}})) {
+                        my $spec = $trole.'.'.$extendedarea;
+                        $grouproles{$spec.'.'.$area.'/'.$group} = 
+                                                $$allgroups{$area}{$group};
                     }
                 }
             }
         }
     }
-    foreach (keys(%grouproles)) {
-        $$allroles{$_} = $grouproles{$_};
+    foreach my $group (keys(%grouproles)) {
+        $$allroles{$group} = $grouproles{$group};
     }
-    foreach (keys %{$allroles}) {
-        my %thesepriv=();
-        if (($_=~/^au/) || ($_=~/^ca/)) { $author=1; }
-        foreach (split(/:/,$$allroles{$_})) {
-            if ($_ ne '') {
-                my ($privilege,$restrictions)=split(/&/,$_);
+    foreach my $role (keys(%{$allroles})) {
+        my %thesepriv;
+        if (($role=~/^au/) || ($role=~/^ca/)) { $author=1; }
+        foreach my $item (split(/:/,$$allroles{$role})) {
+            if ($item ne '') {
+                my ($privilege,$restrictions)=split(/&/,$item);
                 if ($restrictions eq '') {
                     $thesepriv{$privilege}='F';
                 } elsif ($thesepriv{$privilege} ne 'F') {
@@ -2731,8 +3187,10 @@ sub set_userprivs {
             }
         }
         my $thesestr='';
-        foreach (keys %thesepriv) { $thesestr.=':'.$_.'&'.$thesepriv{$_}; }
-        $$userroles.='user.priv.'.$_.'='.$thesestr."\n";
+        foreach my $priv (keys(%thesepriv)) {
+	    $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
+	}
+        $userroles->{'user.priv.'.$role} = $thesestr;
     }
     return ($author,$adv);
 }
@@ -2742,8 +3200,8 @@ sub set_userprivs {
 sub get {
    my ($namespace,$storearr,$udomain,$uname)=@_;
    my $items='';
-   foreach (@$storearr) {
-       $items.=escape($_).'&';
+   foreach my $item (@$storearr) {
+       $items.=&escape($item).'&';
    }
    $items=~s/\&$//;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
@@ -2757,8 +3215,8 @@ sub get {
    }
    my %returnhash=();
    my $i=0;
-   foreach (@$storearr) {
-      $returnhash{$_}=&thaw_unescape($pairs[$i]);
+   foreach my $item (@$storearr) {
+      $returnhash{$item}=&thaw_unescape($pairs[$i]);
       $i++;
    }
    return %returnhash;
@@ -2769,8 +3227,8 @@ sub get {
 sub del {
    my ($namespace,$storearr,$udomain,$uname)=@_;
    my $items='';
-   foreach (@$storearr) {
-       $items.=escape($_).'&';
+   foreach my $item (@$storearr) {
+       $items.=&escape($item).'&';
    }
    $items=~s/\&$//;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
@@ -2783,7 +3241,31 @@ sub del {
 # -------------------------------------------------------------- dump interface
 
 sub dump {
-   my ($namespace,$udomain,$uname,$regexp)=@_;
+    my ($namespace,$udomain,$uname,$regexp,$range)=@_;
+    if (!$udomain) { $udomain=$env{'user.domain'}; }
+    if (!$uname) { $uname=$env{'user.name'}; }
+    my $uhome=&homeserver($uname,$udomain);
+    if ($regexp) {
+	$regexp=&escape($regexp);
+    } else {
+	$regexp='.';
+    }
+    my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
+    my @pairs=split(/\&/,$rep);
+    my %returnhash=();
+    foreach my $item (@pairs) {
+	my ($key,$value)=split(/=/,$item,2);
+	$key = &unescape($key);
+	next if ($key =~ /^error: 2 /);
+	$returnhash{$key}=&thaw_unescape($value);
+    }
+    return %returnhash;
+}
+
+# --------------------------------------------------------- dumpstore interface
+
+sub dumpstore {
+   my ($namespace,$udomain,$uname,$regexp,$range)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
@@ -2792,12 +3274,13 @@ sub dump {
    } else {
        $regexp='.';
    }
-   my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
+   my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
    my @pairs=split(/\&/,$rep);
    my %returnhash=();
-   foreach (@pairs) {
-      my ($key,$value)=split(/=/,$_);
-      $returnhash{unescape($key)}=&thaw_unescape($value);
+   foreach my $item (@pairs) {
+       my ($key,$value)=split(/=/,$item,2);
+       next if ($key =~ /^error: 2 /);
+       $returnhash{$key}=&thaw_unescape($value);
    }
    return %returnhash;
 }
@@ -2811,8 +3294,9 @@ sub getkeys {
    my $uhome=&homeserver($uname,$udomain);
    my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
    my @keyarray=();
-   foreach (split(/\&/,$rep)) {
-      push (@keyarray,&unescape($_));
+   foreach my $key (split(/\&/,$rep)) {
+      next if ($key =~ /^error: 2 /);
+      push(@keyarray,&unescape($key));
    }
    return @keyarray;
 }
@@ -2832,15 +3316,15 @@ sub currentdump {
    if ($rep eq "unknown_cmd") { 
        # an old lond will not know currentdump
        # Do a dump and make it look like a currentdump
-       my @tmp = &dump($courseid,$sdom,$sname,'.');
+       my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
        return if ($tmp[0] =~ /^(error:|no_such_host)/);
        my %hash = @tmp;
        @tmp=();
        %returnhash = %{&convert_dump_to_currentdump(\%hash)};
    } else {
        my @pairs=split(/\&/,$rep);
-       foreach (@pairs) {
-           my ($key,$value)=split(/=/,$_);
+       foreach my $pair (@pairs) {
+           my ($key,$value)=split(/=/,$pair,2);
            my ($symb,$param) = split(/:/,$key);
            $returnhash{&unescape($symb)}->{&unescape($param)} = 
                                                         &thaw_unescape($value);
@@ -2857,6 +3341,8 @@ sub convert_dump_to_currentdump{
     # we might run in to problems with parameter names =~ /^v\./
     while (my ($key,$value) = each(%hash)) {
         my ($v,$symb,$param) = split(/:/,$key);
+	$symb  = &unescape($symb);
+	$param = &unescape($param);
         next if ($v eq 'version' || $symb eq 'keys');
         next if (exists($returnhash{$symb}) &&
                  exists($returnhash{$symb}->{$param}) &&
@@ -2918,8 +3404,8 @@ sub put {
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
    my $items='';
-   foreach (keys %$storehash) {
-       $items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
+   foreach my $item (keys(%$storehash)) {
+       $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
    }
    $items=~s/\&$//;
    return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
@@ -2943,25 +3429,53 @@ sub newput {
 # ---------------------------------------------------------  putstore interface
 
 sub putstore {
-   my ($namespace,$storehash,$udomain,$uname)=@_;
+   my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
    my $items='';
-   my %allitems = ();
-   foreach (keys %$storehash) {
-       if ($_ =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
-           my $key = $1.':keys:'.$2;
-           $allitems{$key} .= $3.':';
-       }
-       $items.=$_.'='.&freeze_escape($$storehash{$_}).'&';
-   }
-   foreach (keys %allitems) {
-       $allitems{$_} =~ s/\:$//;
-       $items.= $_.'='.$allitems{$_}.'&';
+   foreach my $key (keys(%$storehash)) {
+       $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
    }
    $items=~s/\&$//;
-   return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
+   my $esc_symb=&escape($symb);
+   my $esc_v=&escape($version);
+   my $reply =
+       &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
+	      $uhome);
+   if ($reply eq 'unknown_cmd') {
+       # gfall back to way things use to be done
+       return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
+			    $uname);
+   }
+   return $reply;
+}
+
+sub old_putstore {
+    my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
+    if (!$udomain) { $udomain=$env{'user.domain'}; }
+    if (!$uname) { $uname=$env{'user.name'}; }
+    my $uhome=&homeserver($uname,$udomain);
+    my %newstorehash;
+    foreach my $item (keys(%$storehash)) {
+	my $key = $version.':'.&escape($symb).':'.$item;
+	$newstorehash{$key} = $storehash->{$item};
+    }
+    my $items='';
+    my %allitems = ();
+    foreach my $item (keys(%newstorehash)) {
+	if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
+	    my $key = $1.':keys:'.$2;
+	    $allitems{$key} .= $3.':';
+	}
+	$items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
+    }
+    foreach my $item (keys(%allitems)) {
+	$allitems{$item} =~ s/\:$//;
+	$items.= $item.'='.$allitems{$item}.'&';
+    }
+    $items=~s/\&$//;
+    return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
 }
 
 # ------------------------------------------------------ critical put interface
@@ -2972,8 +3486,8 @@ sub cput {
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
    my $items='';
-   foreach (keys %$storehash) {
-       $items.=escape($_).'='.&freeze_escape($$storehash{$_}).'&';
+   foreach my $item (keys(%$storehash)) {
+       $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
    }
    $items=~s/\&$//;
    return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
@@ -2984,8 +3498,8 @@ sub cput {
 sub eget {
    my ($namespace,$storearr,$udomain,$uname)=@_;
    my $items='';
-   foreach (@$storearr) {
-       $items.=escape($_).'&';
+   foreach my $item (@$storearr) {
+       $items.=&escape($item).'&';
    }
    $items=~s/\&$//;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
@@ -2995,8 +3509,8 @@ sub eget {
    my @pairs=split(/\&/,$rep);
    my %returnhash=();
    my $i=0;
-   foreach (@$storearr) {
-      $returnhash{$_}=&thaw_unescape($pairs[$i]);
+   foreach my $item (@$storearr) {
+      $returnhash{$item}=&thaw_unescape($pairs[$i]);
       $i++;
    }
    return %returnhash;
@@ -3004,19 +3518,23 @@ sub eget {
 
 # ------------------------------------------------------------ tmpput interface
 sub tmpput {
-    my ($storehash,$server)=@_;
+    my ($storehash,$server,$context)=@_;
     my $items='';
-    foreach (keys(%$storehash)) {
-	$items.=&escape($_).'='.&freeze_escape($$storehash{$_}).'&';
+    foreach my $item (keys(%$storehash)) {
+	$items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
     }
     $items=~s/\&$//;
+    if (defined($context)) {
+        $items .= ':'.&escape($context);
+    }
     return &reply("tmpput:$items",$server);
 }
 
 # ------------------------------------------------------------ tmpget interface
 sub tmpget {
-    my ($token)=@_;
-    my $rep=&reply("tmpget:$token",$perlvar{'lonHostID'});
+    my ($token,$server)=@_;
+    if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
+    my $rep=&reply("tmpget:$token",$server);
     my %returnhash;
     foreach my $item (split(/\&/,$rep)) {
 	my ($key,$value)=split(/=/,$item);
@@ -3025,35 +3543,301 @@ sub tmpget {
     return %returnhash;
 }
 
-# ---------------------------------------------- Custom access rule evaluation
+# ------------------------------------------------------------ tmpget interface
+sub tmpdel {
+    my ($token,$server)=@_;
+    if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
+    return &reply("tmpdel:$token",$server);
+}
+
+# -------------------------------------------------- portfolio access checking
+
+sub portfolio_access {
+    my ($requrl) = @_;
+    my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
+    my $result = &get_portfolio_access($udom,$unum,$file_name,$group);
+    if ($result) {
+        my %setters;
+        if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
+            my ($startblock,$endblock) =
+                &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
+            if ($startblock && $endblock) {
+                return 'B';
+            }
+        } else {
+            my ($startblock,$endblock) =
+                &Apache::loncommon::blockcheck(\%setters,'port');
+            if ($startblock && $endblock) {
+                return 'B';
+            }
+        }
+    }
+    if ($result eq 'ok') {
+       return 'F';
+    } elsif ($result =~ /^[^:]+:guest_/) {
+       return 'A';
+    }
+    return '';
+}
 
-sub customaccess {
-    my ($priv,$uri)=@_;
-    my ($urole,$urealm)=split(/\./,$env{'request.role'});
-    $urealm=~s/^\W//;
-    my ($udom,$ucrs,$usec)=split(/\//,$urealm);
-    my $access=0;
-    foreach (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
-	my ($effect,$realm,$role)=split(/\:/,$_);
-        if ($role) {
-	   if ($role ne $urole) { next; }
-        }
-        foreach (split(/\s*\,\s*/,$realm)) {
-            my ($tdom,$tcrs,$tsec)=split(/\_/,$_);
-            if ($tdom) {
-		if ($tdom ne $udom) { next; }
+sub get_portfolio_access {
+    my ($udom,$unum,$file_name,$group,$access_hash) = @_;
+
+    if (!ref($access_hash)) {
+	my $current_perms = &get_portfile_permissions($udom,$unum);
+	my %access_controls = &get_access_controls($current_perms,$group,
+						   $file_name);
+	$access_hash = $access_controls{$file_name};
+    }
+
+    my ($public,$guest,@domains,@users,@courses,@groups);
+    my $now = time;
+    if (ref($access_hash) eq 'HASH') {
+        foreach my $key (keys(%{$access_hash})) {
+            my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
+            if ($start > $now) {
+                next;
             }
-            if ($tcrs) {
-		if ($tcrs ne $ucrs) { next; }
+            if ($end && $end<$now) {
+                next;
             }
-            if ($tsec) {
-		if ($tsec ne $usec) { next; }
+            if ($scope eq 'public') {
+                $public = $key;
+                last;
+            } elsif ($scope eq 'guest') {
+                $guest = $key;
+            } elsif ($scope eq 'domains') {
+                push(@domains,$key);
+            } elsif ($scope eq 'users') {
+                push(@users,$key);
+            } elsif ($scope eq 'course') {
+                push(@courses,$key);
+            } elsif ($scope eq 'group') {
+                push(@groups,$key);
+            }
+        }
+        if ($public) {
+            return 'ok';
+        }
+        if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
+            if ($guest) {
+                return $guest;
+            }
+        } else {
+            if (@domains > 0) {
+                foreach my $domkey (@domains) {
+                    if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
+                        if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
+                            return 'ok';
+                        }
+                    }
+                }
+            }
+            if (@users > 0) {
+                foreach my $userkey (@users) {
+                    if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
+                        foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
+                            if (ref($item) eq 'HASH') {
+                                if (($item->{'uname'} eq $env{'user.name'}) &&
+                                    ($item->{'udom'} eq $env{'user.domain'})) {
+                                    return 'ok';
+                                }
+                            }
+                        }
+                    } 
+                }
+            }
+            my %roleshash;
+            my @courses_and_groups = @courses;
+            push(@courses_and_groups,@groups); 
+            if (@courses_and_groups > 0) {
+                my (%allgroups,%allroles); 
+                my ($start,$end,$role,$sec,$group);
+                foreach my $envkey (%env) {
+                    if ($envkey =~ m-^user\.role\.(gr|cc|in|ta|ep|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
+                        my $cid = $2.'_'.$3; 
+                        if ($1 eq 'gr') {
+                            $group = $4;
+                            $allgroups{$cid}{$group} = $env{$envkey};
+                        } else {
+                            if ($4 eq '') {
+                                $sec = 'none';
+                            } else {
+                                $sec = $4;
+                            }
+                            $allroles{$cid}{$1}{$sec} = $env{$envkey};
+                        }
+                    } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
+                        my $cid = $2.'_'.$3;
+                        if ($4 eq '') {
+                            $sec = 'none';
+                        } else {
+                            $sec = $4;
+                        }
+                        $allroles{$cid}{$1}{$sec} = $env{$envkey};
+                    }
+                }
+                if (keys(%allroles) == 0) {
+                    return;
+                }
+                foreach my $key (@courses_and_groups) {
+                    my %content = %{$$access_hash{$key}};
+                    my $cnum = $content{'number'};
+                    my $cdom = $content{'domain'};
+                    my $cid = $cdom.'_'.$cnum;
+                    if (!exists($allroles{$cid})) {
+                        next;
+                    }    
+                    foreach my $role_id (keys(%{$content{'roles'}})) {
+                        my @sections = @{$content{'roles'}{$role_id}{'section'}};
+                        my @groups = @{$content{'roles'}{$role_id}{'group'}};
+                        my @status = @{$content{'roles'}{$role_id}{'access'}};
+                        my @roles = @{$content{'roles'}{$role_id}{'role'}};
+                        foreach my $role (keys(%{$allroles{$cid}})) {
+                            if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
+                                foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
+                                    if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
+                                        if (grep/^all$/,@sections) {
+                                            return 'ok';
+                                        } else {
+                                            if (grep/^$sec$/,@sections) {
+                                                return 'ok';
+                                            }
+                                        }
+                                    }
+                                }
+                                if (keys(%{$allgroups{$cid}}) == 0) {
+                                    if (grep/^none$/,@groups) {
+                                        return 'ok';
+                                    }
+                                } else {
+                                    if (grep/^all$/,@groups) {
+                                        return 'ok';
+                                    } 
+                                    foreach my $group (keys(%{$allgroups{$cid}})) {
+                                        if (grep/^$group$/,@groups) {
+                                            return 'ok';
+                                        }
+                                    }
+                                } 
+                            }
+                        }
+                    }
+                }
+            }
+            if ($guest) {
+                return $guest;
             }
-            $access=($effect eq 'allow');
-            last;
         }
-	if ($realm eq '' && $role eq '') {
-            $access=($effect eq 'allow');
+    }
+    return;
+}
+
+sub course_group_datechecker {
+    my ($dates,$now,$status) = @_;
+    my ($start,$end) = split(/\./,$dates);
+    if (!$start && !$end) {
+        return 'ok';
+    }
+    if (grep/^active$/,@{$status}) {
+        if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
+            return 'ok';
+        }
+    }
+    if (grep/^previous$/,@{$status}) {
+        if ($end > $now ) {
+            return 'ok';
+        }
+    }
+    if (grep/^future$/,@{$status}) {
+        if ($start > $now) {
+            return 'ok';
+        }
+    }
+    return; 
+}
+
+sub parse_portfolio_url {
+    my ($url) = @_;
+
+    my ($type,$udom,$unum,$group,$file_name);
+    
+    if ($url =~  m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
+	$type = 1;
+        $udom = $1;
+        $unum = $2;
+        $file_name = $3;
+    } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
+	$type = 2;
+        $udom = $1;
+        $unum = $2;
+        $group = $3;
+        $file_name = $3.'/'.$4;
+    }
+    if (wantarray) {
+	return ($type,$udom,$unum,$file_name,$group);
+    }
+    return $type;
+}
+
+sub is_portfolio_url {
+    my ($url) = @_;
+    return scalar(&parse_portfolio_url($url));
+}
+
+sub is_portfolio_file {
+    my ($file) = @_;
+    if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
+        return 1;
+    }
+    return;
+}
+
+
+# ---------------------------------------------- Custom access rule evaluation
+
+sub customaccess {
+    my ($priv,$uri)=@_;
+    my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
+    my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
+    $udom = &LONCAPA::clean_domain($udom);
+    $ucrs = &LONCAPA::clean_username($ucrs);
+    my $access=0;
+    foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
+	my ($effect,$realm,$role,$type)=split(/\:/,$right);
+	if ($type eq 'user') {
+	    foreach my $scope (split(/\s*\,\s*/,$realm)) {
+		my ($tdom,$tcrs)=split(/\_/,$scope);
+		if ($tdom) {
+		    if ($tdom ne $env{'user.domain'}) { next; }
+		}
+		if ($tcrs) {
+		    if ($tcrs ne $env{'user.name'}) { next; }
+		}
+		$access=($effect eq 'allow');
+		last;
+	    }
+	} else {
+	    if ($role) {
+		if ($role ne $urole) { next; }
+	    }
+	    foreach my $scope (split(/\s*\,\s*/,$realm)) {
+		my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
+		if ($tdom) {
+		    if ($tdom ne $udom) { next; }
+		}
+		if ($tcrs) {
+		    if ($tcrs ne $ucrs) { next; }
+		}
+		if ($tsec) {
+		    if ($tsec ne $usec) { next; }
+		}
+		$access=($effect eq 'allow');
+		last;
+	    }
+	    if ($realm eq '' && $role eq '') {
+		$access=($effect eq 'allow');
+	    }
 	}
     }
     return $access;
@@ -3062,23 +3846,66 @@ sub customaccess {
 # ------------------------------------------------- Check for a user privilege
 
 sub allowed {
-    my ($priv,$uri,$symb)=@_;
+    my ($priv,$uri,$symb,$role)=@_;
+    my $ver_orguri=$uri;
     $uri=&deversion($uri);
     my $orguri=$uri;
     $uri=&declutter($uri);
-    
+
+    if ($priv eq 'evb') {
+# Evade communication block restrictions for specified role in a course
+        if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
+            return $1;
+        } else {
+            return;
+        }
+    }
+
     if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
 # Free bre access to adm and meta resources
-    if (((($uri=~/^adm\//) && ($uri !~ m|/bulletinboard$|)) 
-	 || ($uri=~/\.meta$/)) && ($priv eq 'bre')) {
+    if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$})) 
+	 || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) )) 
+	&& ($priv eq 'bre')) {
 	return 'F';
     }
 
 # Free bre access to user's own portfolio contents
-    my ($space,$domain,$name,$dir)=split('/',$uri);
+    my ($space,$domain,$name,@dir)=split('/',$uri);
     if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) && 
-	($env{'user.domain'} eq $domain) && ('portfolio' eq $dir)) {
-        return 'F';
+	($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
+        my %setters;
+        my ($startblock,$endblock) = 
+            &Apache::loncommon::blockcheck(\%setters,'port');
+        if ($startblock && $endblock) {
+            return 'B';
+        } else {
+            return 'F';
+        }
+    }
+
+# bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
+    if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups') 
+         && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
+        if (exists($env{'request.course.id'})) {
+            my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+            my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+            if (($domain eq $cdom) && ($name eq $cnum)) {
+                my $courseprivid=$env{'request.course.id'};
+                $courseprivid=~s/\_/\//;
+                if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
+                    .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
+                    return $1; 
+                } else {
+                    if ($env{'request.course.sec'}) {
+                        $courseprivid.='/'.$env{'request.course.sec'};
+                    }
+                    if ($env{'user.priv.'.$env{'request.role'}.'./'.
+                        $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
+                        return $2;
+                    }
+                }
+            }
+        }
     }
 
 # Free bre to public access
@@ -3144,14 +3971,6 @@ sub allowed {
        $thisallowed.=$1;
     }
 
-# Group: uri itself is a group
-    my $groupuri=$uri;
-    $groupuri=~s/^([^\/])/\/$1/;
-    if ($env{'user.priv.'.$env{'request.role'}.'.'.$groupuri}
-       =~/\Q$priv\E\&([^\:]*)/) {
-       $thisallowed.=$1;
-    }
-
 # URI is an uploaded document for this course, default permissions don't matter
 # not allowing 'edit' access (editupload) to uploaded course docs
     if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
@@ -3163,7 +3982,7 @@ sub allowed {
                 $thisallowed.=$1;
             }
         } else {
-            my $refuri=$env{'httpref.'.$orguri};
+            my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
             if ($refuri) {
                 if ($refuri =~ m|^/adm/|) {
                     $thisallowed='F';
@@ -3178,6 +3997,13 @@ sub allowed {
         }
     }
 
+    if ($priv eq 'bre'
+	&& $thisallowed ne 'F' 
+	&& $thisallowed ne '2'
+	&& &is_portfolio_url($uri)) {
+	$thisallowed = &portfolio_access($uri);
+    }
+    
 # Full access at system, domain or course-wide level? Exit.
 
     if ($thisallowed=~/F/) {
@@ -3225,14 +4051,14 @@ sub allowed {
        if ($checkreferer) {
 	  my $refuri=$env{'httpref.'.$orguri};
             unless ($refuri) {
-                foreach (keys %env) {
-		    if ($_=~/^httpref\..*\*/) {
-			my $pattern=$_;
+                foreach my $key (keys(%env)) {
+		    if ($key=~/^httpref\..*\*/) {
+			my $pattern=$key;
                         $pattern=~s/^httpref\.\/res\///;
                         $pattern=~s/\*/\[\^\/\]\+/g;
                         $pattern=~s/\//\\\//g;
                         if ($orguri=~/$pattern/) {
-			    $refuri=$env{$_};
+			    $refuri=$env{$key};
                         }
                     }
                 }
@@ -3295,7 +4121,7 @@ sub allowed {
 	       my ($cdom,$cnum,$csec)=split(/\//,$courseid);
                my $prefix='course.'.$cdom.'_'.$cnum.'.';
                if ((time-$env{$prefix.'last_cache'})>$expiretime) {
-		   &coursedescription($courseid);
+		   &coursedescription($courseid,{'freshen_cache' => 1});
                }
                if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
                 || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
@@ -3328,7 +4154,13 @@ sub allowed {
 #
 
     unless ($env{'request.course.id'}) {
-       return '1';
+	if ($thisallowed eq 'A') {
+	    return 'A';
+        } elsif ($thisallowed eq 'B') {
+            return 'B';
+	} else {
+	    return '1';
+	}
     }
 
 #
@@ -3343,17 +4175,21 @@ sub allowed {
        my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
        if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
 	   =~/\Q$rolecode\E/) {
-           &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
-                'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
-                $env{'request.course.id'});
+	   if ($priv ne 'pch') { 
+	       &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
+			'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
+			$env{'request.course.id'});
+	   }
            return '';
        }
 
        if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
 	   =~/\Q$unamedom\E/) {
-           &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
-                'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
-                $env{'request.course.id'});
+	   if ($priv ne 'pch') { 
+	       &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
+			'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
+			$env{'request.course.id'});
+	   }
            return '';
        }
    }
@@ -3363,9 +4199,11 @@ sub allowed {
    if ($thisallowed=~/R/) {
        my $rolecode=(split(/\./,$env{'request.role'}))[0];
        if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
-	   &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
-		'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
-          return '';
+	   if ($priv ne 'pch') { 
+	       &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
+			'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
+	   }
+	   return '';
        }
    }
 
@@ -3385,18 +4223,25 @@ sub allowed {
       }
    }
 
+    if ($thisallowed eq 'A') {
+	return 'A';
+    } elsif ($thisallowed eq 'B') {
+        return 'B';
+    }
    return 'F';
 }
 
+sub split_uri_for_cond {
+    my $uri=&deversion(&declutter(shift));
+    my @uriparts=split(/\//,$uri);
+    my $filename=pop(@uriparts);
+    my $pathname=join('/',@uriparts);
+    return ($pathname,$filename);
+}
 # --------------------------------------------------- Is a resource on the map?
 
 sub is_on_map {
-    my $uri=&deversion(&declutter(shift));
-    my @uriparts=split(/\//,$uri);
-    my $filename=$uriparts[$#uriparts];
-    my $pathname=$uri;
-    $pathname=~s|/\Q$filename\E$||;
-    $pathname=~s/^adm\/wrapper\///;    
+    my ($pathname,$filename) = &split_uri_for_cond(shift);
     #Trying to find the conditional for the file
     my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
 	       /\&\Q$filename\E\:([\d\|]+)\&/);
@@ -3435,8 +4280,8 @@ sub get_symb_from_alias {
 sub definerole {
   if (allowed('mcr','/')) {
     my ($rolename,$sysrole,$domrole,$courole)=@_;
-    foreach (split(':',$sysrole)) {
-	my ($crole,$cqual)=split(/\&/,$_);
+    foreach my $role (split(':',$sysrole)) {
+	my ($crole,$cqual)=split(/\&/,$role);
         if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
         if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
 	    if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) { 
@@ -3444,8 +4289,8 @@ sub definerole {
             }
         }
     }
-    foreach (split(':',$domrole)) {
-	my ($crole,$cqual)=split(/\&/,$_);
+    foreach my $role (split(':',$domrole)) {
+	my ($crole,$cqual)=split(/\&/,$role);
         if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
         if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
 	    if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) { 
@@ -3453,8 +4298,8 @@ sub definerole {
             }
         }
     }
-    foreach (split(':',$courole)) {
-	my ($crole,$cqual)=split(/\&/,$_);
+    foreach my $role (split(':',$courole)) {
+	my ($crole,$cqual)=split(/\&/,$role);
         if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
         if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
 	    if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) { 
@@ -3477,6 +4322,7 @@ sub definerole {
 sub metadata_query {
     my ($query,$custom,$customshow,$server_array)=@_;
     my %rhash;
+    my %libserv = &all_library();
     my @server_list = (defined($server_array) ? @$server_array
                                               : keys(%libserv) );
     for my $server (@server_list) {
@@ -3500,14 +4346,26 @@ sub log_query {
     my ($uname,$udom,$query,%filters)=@_;
     my $uhome=&homeserver($uname,$udom);
     if ($uhome eq 'no_host') { return 'error: no_host'; }
-    my $uhost=$hostname{$uhome};
-    my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys %filters));
+    my $uhost=&hostname($uhome);
+    my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
     my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
                        $uhome);
     unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
     return get_query_reply($queryid);
 }
 
+# -------------------------- Update MySQL table for portfolio file
+
+sub update_portfolio_table {
+    my ($uname,$udom,$file_name,$query,$group,$action) = @_;
+    my $homeserver = &homeserver($uname,$udom);
+    my $queryid=
+        &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
+               ':'.&escape($file_name).':'.$action,$homeserver);
+    my $reply = &get_query_reply($queryid);
+    return $reply;
+}
+
 # ------- Request retrieval of institutional classlists for course(s)
 
 sub fetch_enrollment_query {
@@ -3520,10 +4378,10 @@ sub fetch_enrollment_query {
     } else {
         $homeserver = &homeserver($cnum,$dom);
     }
-    my $host=$hostname{$homeserver};
+    my $host=&hostname($homeserver);
     my $cmd = '';
-    foreach (keys %{$affiliatesref}) {
-        $cmd .= $_.'='.join(",",@{$$affiliatesref{$_}}).'%%';
+    foreach my $affiliate (keys %{$affiliatesref}) {
+        $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
     }
     $cmd =~ s/%%$//;
     $cmd = &escape($cmd);
@@ -3544,18 +4402,18 @@ sub fetch_enrollment_query {
     } else {
         my @responses = split/:/,$reply;
         if ($homeserver eq $perlvar{'lonHostID'}) {
-            foreach (@responses) {
-                my ($key,$value) = split/=/,$_;
+            foreach my $line (@responses) {
+                my ($key,$value) = split(/=/,$line,2);
                 $$replyref{$key} = $value;
             }
         } else {
             my $pathname = $perlvar{'lonDaemons'}.'/tmp';
-            foreach (@responses) {
-                my ($key,$value) = split/=/,$_;
+            foreach my $line (@responses) {
+                my ($key,$value) = split(/=/,$line);
                 $$replyref{$key} = $value;
                 if ($value > 0) {
-                    foreach (@{$$affiliatesref{$key}}) {
-                        my $filename = $dom.'_'.$key.'_'.$_.'_classlist.xml';
+                    foreach my $item (@{$$affiliatesref{$key}}) {
+                        my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
                         my $destname = $pathname.'/'.$filename;
                         my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
                         if ($xml_classlist =~ /^error/) {
@@ -3617,6 +4475,12 @@ sub courselog_query {
 }
 
 sub userlog_query {
+#
+# possible filters:
+# action: log check role
+# start: timestamp
+# end: timestamp
+#
     my ($uname,$udom,%filters)=@_;
     return &log_query($uname,$udom,'userlog',%filters);
 }
@@ -3625,11 +4489,21 @@ sub userlog_query {
 
 sub auto_run {
     my ($cnum,$cdom) = @_;
-    my $homeserver = &homeserver($cnum,$cdom);
-    my $response = &reply('autorun:'.$cdom,$homeserver);
+    my $response = 0;
+    my $settings;
+    my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
+    if (ref($domconfig{'autoenroll'}) eq 'HASH') {
+        $settings = $domconfig{'autoenroll'};
+        if ($settings->{'run'} eq '1') {
+            $response = 1;
+        }
+    } else {
+        my $homeserver = &homeserver($cnum,$cdom);
+        $response = &reply('autorun:'.$cdom,$homeserver);
+    }
     return $response;
 }
-                                                                                   
+
 sub auto_get_sections {
     my ($cnum,$cdom,$inst_coursecode) = @_;
     my $homeserver = &homeserver($cnum,$cdom);
@@ -3640,89 +4514,207 @@ sub auto_get_sections {
     }
     return @secs;
 }
-                                                                                   
+
 sub auto_new_course {
     my ($cnum,$cdom,$inst_course_id,$owner) = @_;
     my $homeserver = &homeserver($cnum,$cdom);
     my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.$owner.':'.$cdom,$homeserver));
     return $response;
 }
-                                                                                   
+
 sub auto_validate_courseID {
     my ($cnum,$cdom,$inst_course_id) = @_;
     my $homeserver = &homeserver($cnum,$cdom);
     my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
     return $response;
 }
-                                                                                   
+
 sub auto_create_password {
-    my ($cnum,$cdom,$authparam) = @_;
-    my $homeserver = &homeserver($cnum,$cdom); 
+    my ($cnum,$cdom,$authparam,$udom) = @_;
+    my ($homeserver,$response);
     my $create_passwd = 0;
     my $authchk = '';
-    my $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
-    if ($response eq 'refused') {
-        $authchk = 'refused';
+    if ($udom =~ /^$match_domain$/) {
+        $homeserver = &domain($udom,'primary');
+    }
+    if ($homeserver eq '') {
+        if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
+            $homeserver = &homeserver($cnum,$cdom);
+        }
+    }
+    if ($homeserver eq '') {
+        $authchk = 'nodomain';
     } else {
-        ($authparam,$create_passwd,$authchk) = split/:/,$response;
+        $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
+        if ($response eq 'refused') {
+            $authchk = 'refused';
+        } else {
+            ($authparam,$create_passwd,$authchk) = split/:/,$response;
+        }
     }
     return ($authparam,$create_passwd,$authchk);
 }
 
+sub auto_photo_permission {
+    my ($cnum,$cdom,$students) = @_;
+    my $homeserver = &homeserver($cnum,$cdom);
+    my ($outcome,$perm_reqd,$conditions) = 
+	split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
+    if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
+	return (undef,undef);
+    }
+    return ($outcome,$perm_reqd,$conditions);
+}
+
+sub auto_checkphotos {
+    my ($uname,$udom,$pid) = @_;
+    my $homeserver = &homeserver($uname,$udom);
+    my ($result,$resulttype);
+    my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
+				   &escape($uname).':'.&escape($pid),
+				   $homeserver));
+    if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
+	return (undef,undef);
+    }
+    if ($outcome) {
+        ($result,$resulttype) = split(/:/,$outcome);
+    } 
+    return ($result,$resulttype);
+}
+
+sub auto_photochoice {
+    my ($cnum,$cdom) = @_;
+    my $homeserver = &homeserver($cnum,$cdom);
+    my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
+						       &escape($cdom),
+						       $homeserver)));
+    if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
+	return (undef,undef);
+    }
+    return ($update,$comment);
+}
+
+sub auto_photoupdate {
+    my ($affiliatesref,$dom,$cnum,$photo) = @_;
+    my $homeserver = &homeserver($cnum,$dom);
+    my $host=&hostname($homeserver);
+    my $cmd = '';
+    my $maxtries = 1;
+    foreach my $affiliate (keys(%{$affiliatesref})) {
+        $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
+    }
+    $cmd =~ s/%%$//;
+    $cmd = &escape($cmd);
+    my $query = 'institutionalphotos';
+    my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
+    unless ($queryid=~/^\Q$host\E\_/) {
+        &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
+        return 'error: '.$queryid;
+    }
+    my $reply = &get_query_reply($queryid);
+    my $tries = 1;
+    while (($reply=~/^timeout/) && ($tries < $maxtries)) {
+        $reply = &get_query_reply($queryid);
+        $tries ++;
+    }
+    if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
+        &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
+    } else {
+        my @responses = split(/:/,$reply);
+        my $outcome = shift(@responses); 
+        foreach my $item (@responses) {
+            my ($key,$value) = split(/=/,$item);
+            $$photo{$key} = $value;
+        }
+        return $outcome;
+    }
+    return 'error';
+}
+
 sub auto_instcode_format {
-    my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,$cat_order) = @_;
+    my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
+	$cat_order) = @_;
     my $courses = '';
-    my $homeserver;
+    my @homeservers;
     if ($caller eq 'global') {
-        foreach my $tryserver (keys %libserv) {
-            if ($hostdom{$tryserver} eq $codedom) {
-                $homeserver = $tryserver;
-                last;
-            }
-        }
-        if (($env{'user.name'}) && ($env{'user.domain'} eq $codedom)) {
-            $homeserver = &homeserver($env{'user.name'},$codedom);
+	my %servers = &get_servers($codedom,'library');
+	foreach my $tryserver (keys(%servers)) {
+	    if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
+		push(@homeservers,$tryserver);
+	    }
         }
     } else {
-        $homeserver = &homeserver($caller,$codedom);
+        push(@homeservers,&homeserver($caller,$codedom));
     }
-    foreach (keys %{$instcodes}) {
-        $courses .= &escape($_).'='.&escape($$instcodes{$_}).'&';
+    foreach my $code (keys(%{$instcodes})) {
+        $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
     }
     chop($courses);
-    my $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$homeserver);
-    unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
-        my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = split/:/,$response;
-        %{$codes} = &str2hash($codes_str);
-        @{$codetitles} = &str2array($codetitles_str);
-        %{$cat_titles} = &str2hash($cat_titles_str);
-        %{$cat_order} = &str2hash($cat_order_str);
+    my $ok_response = 0;
+    my $response;
+    while (@homeservers > 0 && $ok_response == 0) {
+        my $server = shift(@homeservers); 
+        $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
+        if ($response !~ /(con_lost|error|no_such_host|refused)/) {
+            my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) = 
+		split/:/,$response;
+            %{$codes} = (%{$codes},&str2hash($codes_str));
+            push(@{$codetitles},&str2array($codetitles_str));
+            %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
+            %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
+            $ok_response = 1;
+        }
+    }
+    if ($ok_response) {
         return 'ok';
+    } else {
+        return $response;
+    }
+}
+
+sub auto_instcode_defaults {
+    my ($domain,$returnhash,$code_order) = @_;
+    my @homeservers;
+
+    my %servers = &get_servers($domain,'library');
+    foreach my $tryserver (keys(%servers)) {
+	if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
+	    push(@homeservers,$tryserver);
+	}
     }
+
+    my $response;
+    foreach my $server (@homeservers) {
+        $response=&reply('autoinstcodedefaults:'.$domain,$server);
+        next if ($response =~ /(con_lost|error|no_such_host|refused)/);
+	
+	foreach my $pair (split(/\&/,$response)) {
+	    my ($name,$value)=split(/\=/,$pair);
+	    if ($name eq 'code_order') {
+		@{$code_order} = split(/\&/,&unescape($value));
+	    } else {
+		$returnhash->{&unescape($name)}=&unescape($value);
+	    }
+	}
+	return 'ok';
+    }
+
+    return $response;
+} 
+
+sub auto_validate_class_sec {
+    my ($cdom,$cnum,$owner,$inst_class) = @_;
+    my $homeserver = &homeserver($cnum,$cdom);
+    my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
+                        &escape($owner).':'.$cdom,$homeserver);
     return $response;
 }
 
 # ------------------------------------------------------- Course Group routines
 
 sub get_coursegroups {
-    my ($cdom,$cnum,$curr_groups,$group) = @_;
-    my $numgroups = 0;
-    %{$curr_groups} = &dump('coursegroups',$cdom,$cnum,$group);
-    my ($tmp)=keys(%{$curr_groups});
-    if ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
-        my %emptyhash = ();
-        if (&put('coursegroups',\%emptyhash,$cdom,$cnum) eq 'ok') {
-            %{$curr_groups} = &dump('coursegroups',$cdom,$cnum,$group);
-            $tmp=keys(%{$curr_groups});
-        }
-    }
-    if ($tmp=~/^error:/) {
-        &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.$cdom);
-    } else {
-        my @groups = keys(%{$curr_groups});
-        $numgroups = @groups;
-    }
-    return $numgroups;
+    my ($cdom,$cnum,$group,$namespace) = @_;
+    return(&dump($namespace,$cdom,$cnum,$group));
 }
 
 sub modify_coursegroup {
@@ -3730,12 +4722,46 @@ sub modify_coursegroup {
     return(&put('coursegroups',$groupsettings,$cdom,$cnum));
 }
 
+sub toggle_coursegroup_status {
+    my ($cdom,$cnum,$group,$action) = @_;
+    my ($from_namespace,$to_namespace);
+    if ($action eq 'delete') {
+        $from_namespace = 'coursegroups';
+        $to_namespace = 'deleted_groups';
+    } else {
+        $from_namespace = 'deleted_groups';
+        $to_namespace = 'coursegroups';
+    }
+    my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
+    if (my $tmp = &error(%curr_group)) {
+        &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
+        return ('read error',$tmp);
+    } else {
+        my %savedsettings = %curr_group; 
+        my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
+        my $deloutcome;
+        if ($result eq 'ok') {
+            $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
+        } else {
+            return ('write error',$result);
+        }
+        if ($deloutcome eq 'ok') {
+            return 'ok';
+        } else {
+            return ('delete error',$deloutcome);
+        }
+    }
+}
+
 sub modify_group_roles {
     my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;
     my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
     my $role = 'gr/'.&escape($userprivs);
     my ($uname,$udom) = split(/:/,$user);
     my $result = &assignrole($udom,$uname,$url,$role,$end,$start);
+    if ($result eq 'ok') {
+        &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
+    }
     return $result;
 }
 
@@ -3745,11 +4771,104 @@ sub modify_coursegroup_membership {
     return $result;
 }
 
+sub get_active_groups {
+    my ($udom,$uname,$cdom,$cnum) = @_;
+    my $now = time;
+    my %groups = ();
+    foreach my $key (keys(%env)) {
+        if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
+            my ($start,$end) = split(/\./,$env{$key});
+            if (($end!=0) && ($end<$now)) { next; }
+            if (($start!=0) && ($start>$now)) { next; }
+            if ($1 eq $cdom && $2 eq $cnum) {
+                $groups{$3} = $env{$key} ;
+            }
+        }
+    }
+    return %groups;
+}
+
+sub get_group_membership {
+    my ($cdom,$cnum,$group) = @_;
+    return(&dump('groupmembership',$cdom,$cnum,$group));
+}
+
+sub get_users_groups {
+    my ($udom,$uname,$courseid) = @_;
+    my @usersgroups;
+    my $cachetime=1800;
+
+    my $hashid="$udom:$uname:$courseid";
+    my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
+    if (defined($cached)) {
+        @usersgroups = split(/:/,$grouplist);
+    } else {  
+        $grouplist = '';
+        my $courseurl = &courseid_to_courseurl($courseid);
+        my %roleshash = &dump('roles',$udom,$uname,$courseurl);
+        my $access_end = $env{'course.'.$courseid.
+                              '.default_enrollment_end_date'};
+        my $now = time;
+        foreach my $key (keys(%roleshash)) {
+            if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
+                my $group = $1;
+                if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
+                    my $start = $2;
+                    my $end = $1;
+                    if ($start == -1) { next; } # deleted from group
+                    if (($start!=0) && ($start>$now)) { next; }
+                    if (($end!=0) && ($end<$now)) {
+                        if ($access_end && $access_end < $now) {
+                            if ($access_end - $end < 86400) {
+                                push(@usersgroups,$group);
+                            }
+                        }
+                        next;
+                    }
+                    push(@usersgroups,$group);
+                }
+            }
+        }
+        @usersgroups = &sort_course_groups($courseid,@usersgroups);
+        $grouplist = join(':',@usersgroups);
+        &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
+    }
+    return @usersgroups;
+}
+
+sub devalidate_getgroups_cache {
+    my ($udom,$uname,$cdom,$cnum)=@_;
+    my $courseid = $cdom.'_'.$cnum;
+
+    my $hashid="$udom:$uname:$courseid";
+    &devalidate_cache_new('getgroups',$hashid);
+}
+
 # ------------------------------------------------------------------ Plain Text
 
 sub plaintext {
-    my $short=shift;
-    return &Apache::lonlocal::mt($prp{$short});
+    my ($short,$type,$cid) = @_;
+    if ($short =~ /^cr/) {
+	return (split('/',$short))[-1];
+    }
+    if (!defined($cid)) {
+        $cid = $env{'request.course.id'};
+    }
+    if (defined($cid) && defined($env{'course.'.$cid.'.'.$short.'.plaintext'})) {
+        return &Apache::lonlocal::mt($env{'course.'.$cid.'.'.$short.
+                                          '.plaintext'});
+    }
+    my %rolenames = (
+                      Course => 'std',
+                      Group => 'alt1',
+                    );
+    if (defined($type) && 
+         defined($rolenames{$type}) && 
+         defined($prp{$short}{$rolenames{$type}})) {
+        return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
+    } else {
+        return &Apache::lonlocal::mt($prp{$short}{'std'});
+    }
 }
 
 # ----------------------------------------------------------------- Assign Role
@@ -3759,7 +4878,7 @@ sub assignrole {
     my $mrole;
     if ($role =~ /^cr\//) {
         my $cwosec=$url;
-        $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
+        $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
 	unless (&allowed('ccr',$cwosec)) {
            &logthis('Refused custom assignrole: '.
              $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
@@ -3769,7 +4888,7 @@ sub assignrole {
         $mrole='cr';
     } elsif ($role =~ /^gr\//) {
         my $cwogrp=$url;
-        $cwogrp=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
+        $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
         unless (&allowed('mdg',$cwogrp)) {
             &logthis('Refused group assignrole: '.
               $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
@@ -3779,7 +4898,7 @@ sub assignrole {
         $mrole='gr';
     } else {
         my $cwosec=$url;
-        $cwosec=~s/^\/(\w+)\/(\w+)\/.*/$1\/$2/;
+        $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
         unless ((&allowed('c'.$role,$cwosec)) || &allowed('c'.$role,$udom)) { 
            &logthis('Refused assignrole: '.
              $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
@@ -3798,6 +4917,8 @@ sub assignrole {
            $command.='_0_'.$start;
         }
     }
+    my $origstart = $start;
+    my $origend = $end;
 # actually delete
     if ($deleteflag) {
 	if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
@@ -3815,6 +4936,11 @@ sub assignrole {
 # log new user role if status is ok
     if ($answer eq 'ok') {
 	&userrolelog($role,$uname,$udom,$url,$start,$end);
+# for course roles, perform group memberships changes triggered by role change.
+        unless ($role =~ /^gr/) {
+            &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
+                                             $origstart);
+        }
     }
     return $answer;
 }
@@ -3852,8 +4978,8 @@ sub modifyuser {
         $umode,   $upass, $first,
         $middle,  $last,  $gene,
         $forceid, $desiredhome, $email)=@_;
-    $udom=~s/\W//g;
-    $uname=~s/\W//g;
+    $udom= &LONCAPA::clean_domain($udom);
+    $uname=&LONCAPA::clean_username($uname);
     &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
              $umode.', '.$first.', '.$middle.', '.
 	     $last.', '.$gene.'(forceid: '.$forceid.')'.
@@ -3866,21 +4992,19 @@ sub modifyuser {
     if (($uhome eq 'no_host') && 
 	(($umode && $upass) || ($umode eq 'localauth'))) {
         my $unhome='';
-        if (defined($desiredhome) && $hostdom{$desiredhome} eq $udom) { 
+        if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) { 
             $unhome = $desiredhome;
 	} elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
 	    $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
         } else { # load balancing routine for determining $unhome
-            my $tryserver;
             my $loadm=10000000;
-            foreach $tryserver (keys %libserv) {
-	       if ($hostdom{$tryserver} eq $udom) {
-                  my $answer=reply('load',$tryserver);
-                  if (($answer=~/\d+/) && ($answer<$loadm)) {
-		      $loadm=$answer;
-                      $unhome=$tryserver;
-                  }
-	       }
+	    my %servers = &get_servers($udom,'library');
+	    foreach my $tryserver (keys(%servers)) {
+		my $answer=reply('load',$tryserver);
+		if (($answer=~/\d+/) && ($answer<$loadm)) {
+		    $loadm=$answer;
+		    $unhome=$tryserver;
+		}
 	    }
         }
         if (($unhome eq '') || ($unhome eq 'no_host')) {
@@ -3937,6 +5061,7 @@ sub modifyuser {
     }
     my $reply = &put('environment', \%names, $udom,$uname);
     if ($reply ne 'ok') { return 'error: '.$reply; }
+    &devalidate_cache_new('namescache',$uname.':'.$udom);
     &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
              $umode.', '.$first.', '.$middle.', '.
 	     $last.', '.$gene.' by '.
@@ -4001,8 +5126,8 @@ sub modify_student_enrollment {
                        ['firstname','middlename','lastname', 'generation','id']
                        ,$udom,$uname);
 
-        #foreach (keys(%tmp)) {
-        #    &logthis("key $_ = ".$tmp{$_});
+        #foreach my $key (keys(%tmp)) {
+        #    &logthis("key $key = ".$tmp{$key});
         #}
         $first  = $tmp{'firstname'}  if (!defined($first)  || $first  eq '');
         $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
@@ -4060,8 +5185,8 @@ sub writecoursepref {
 	return 'error: no such course';
     }
     my $cstring='';
-    foreach (keys %prefs) {
-	$cstring.=escape($_).'='.escape($prefs{$_}).'&';
+    foreach my $pref (keys(%prefs)) {
+	$cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
     }
     $cstring=~s/\&$//;
     return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
@@ -4070,7 +5195,8 @@ sub writecoursepref {
 # ---------------------------------------------------------- Make/modify course
 
 sub createcourse {
-    my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner)=@_;
+    my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
+        $course_owner,$crstype)=@_;
     $url=&declutter($url);
     my $cid='';
     unless (&allowed('ccc',$udom)) {
@@ -4093,7 +5219,7 @@ sub createcourse {
    }
 # ------------------------------------------------ Check supplied server name
     $course_server = $env{'user.homeserver'} if (! defined($course_server));
-    if (! exists($libserv{$course_server})) {
+    if (! &is_library($course_server)) {
         return 'error:bad server name '.$course_server;
     }
 # ------------------------------------------------------------- Make the course
@@ -4107,7 +5233,8 @@ sub createcourse {
 # ----------------------------------------------------------------- Course made
 # log existence
     &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
-                 ':'.&escape($inst_code).':'.&escape($course_owner),$uhome);
+                 ':'.&escape($inst_code).':'.&escape($course_owner).':'.
+                  &escape($crstype),$uhome);
     &flushcourselogs();
 # set toplevel url
     my $topurl=$url;
@@ -4135,6 +5262,16 @@ ENDINITMAP
     return '/'.$udom.'/'.$uname;
 }
 
+sub is_course {
+    my ($cdom,$cnum) = @_;
+    my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
+				undef,'.');
+    if (exists($courses{$cdom.'_'.$cnum})) {
+        return 1;
+    }
+    return 0;
+}
+
 # ---------------------------------------------------------- Assign Custom Role
 
 sub assigncustomrole {
@@ -4177,14 +5314,26 @@ sub is_locked {
 		      $env{'user.domain'},$env{'user.name'});
     my ($tmp)=keys(%locked);
     if ($tmp=~/^error:/) { undef(%locked); }
-
+    
     if (ref($locked{$file_name}) eq 'ARRAY') {
-        $is_locked = 'true';
+        $is_locked = 'false';
+        foreach my $entry (@{$locked{$file_name}}) {
+           if (ref($entry) eq 'ARRAY') { 
+               $is_locked = 'true';
+               last;
+           }
+       }
     } else {
         $is_locked = 'false';
     }
 }
 
+sub declutter_portfile {
+    my ($file) = @_;
+    $file =~ s{^(/portfolio/|portfolio/)}{/};
+    return $file;
+}
+
 # ------------------------------------------------------------- Mark as Read Only
 
 sub mark_as_readonly {
@@ -4193,6 +5342,7 @@ sub mark_as_readonly {
     my ($tmp)=keys(%current_permissions);
     if ($tmp=~/^error:/) { undef(%current_permissions); }
     foreach my $file (@{$files}) {
+	$file = &declutter_portfile($file);
         push(@{$current_permissions{$file}},$what);
     }
     &put('file_permissions',\%current_permissions,$domain,$user);
@@ -4205,7 +5355,7 @@ sub save_selected_files {
     my ($user, $path, @files) = @_;
     my $filename = $user."savedfiles";
     my @other_files = &files_not_in_path($user, $path);
-    open (OUT, '>'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
+    open (OUT, '>'.$tmpdir.$filename);
     foreach my $file (@files) {
         print (OUT $env{'form.currentpath'}.$file."\n");
     }
@@ -4251,66 +5401,273 @@ sub files_not_in_path {
     my $filename = $user."savedfiles";
     my @return_files;
     my $path_part;
-    open (IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
-    while (<IN>) {
+    open(IN, '<'.$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename);
+    while (my $line = <IN>) {
         #ok, I know it's clunky, but I want it to work
-        my @paths_and_file = split m!/!, $_;
-        my $file_part = pop (@paths_and_file);
-        chomp ($file_part);
-        my $path_part = join ('/', @paths_and_file);
+        my @paths_and_file = split(m|/|, $line);
+        my $file_part = pop(@paths_and_file);
+        chomp($file_part);
+        my $path_part = join('/', @paths_and_file);
         $path_part .= '/';
         my $path_and_file = $path_part.$file_part;
         if ($path_part ne $path) {
-            push (@return_files, ($path_and_file));
+            push(@return_files, ($path_and_file));
         }
     }
-    close (OUT);
+    close(OUT);
     return (@return_files);
 }
 
-#--------------------------------------------------------------Get Marked as Read Only
+#----------------------------------------------Get portfolio file permissions
 
-
-sub get_marked_as_readonly {
-    my ($domain,$user,$what) = @_;
+sub get_portfile_permissions {
+    my ($domain,$user) = @_;
     my %current_permissions = &dump('file_permissions',$domain,$user);
     my ($tmp)=keys(%current_permissions);
     if ($tmp=~/^error:/) { undef(%current_permissions); }
+    return \%current_permissions;
+}
+
+#---------------------------------------------Get portfolio file access controls
+
+sub get_access_controls {
+    my ($current_permissions,$group,$file) = @_;
+    my %access;
+    my $real_file = $file;
+    $file =~ s/\.meta$//;
+    if (defined($file)) {
+        if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
+            foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
+                $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
+            }
+        }
+    } else {
+        foreach my $key (keys(%{$current_permissions})) {
+            if ($key =~ /\0accesscontrol$/) {
+                if (defined($group)) {
+                    if ($key !~ m-^\Q$group\E/-) {
+                        next;
+                    }
+                }
+                my ($fullpath) = split(/\0/,$key);
+                if (ref($$current_permissions{$key}) eq 'HASH') {
+                    foreach my $control (keys(%{$$current_permissions{$key}})) {
+                        $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
+                    }
+                }
+            }
+        }
+    }
+    return %access;
+}
+
+sub modify_access_controls {
+    my ($file_name,$changes,$domain,$user)=@_;
+    my ($outcome,$deloutcome);
+    my %store_permissions;
+    my %new_values;
+    my %new_control;
+    my %translation;
+    my @deletions = ();
+    my $now = time;
+    if (exists($$changes{'activate'})) {
+        if (ref($$changes{'activate'}) eq 'HASH') {
+            my @newitems = sort(keys(%{$$changes{'activate'}}));
+            my $numnew = scalar(@newitems);
+            for (my $i=0; $i<$numnew; $i++) {
+                my $newkey = $newitems[$i];
+                my $newid = &Apache::loncommon::get_cgi_id();
+                if ($newkey =~ /^\d+:/) { 
+                    $newkey =~ s/^(\d+)/$newid/;
+                    $translation{$1} = $newid;
+                } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
+                    $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
+                    $translation{$1} = $newid;
+                }
+                $new_values{$file_name."\0".$newkey} = 
+                                          $$changes{'activate'}{$newitems[$i]};
+                $new_control{$newkey} = $now;
+            }
+        }
+    }
+    my %todelete;
+    my %changed_items;
+    foreach my $action ('delete','update') {
+        if (exists($$changes{$action})) {
+            if (ref($$changes{$action}) eq 'HASH') {
+                foreach my $key (keys(%{$$changes{$action}})) {
+                    my ($itemnum) = ($key =~ /^([^:]+):/);
+                    if ($action eq 'delete') { 
+                        $todelete{$itemnum} = 1;
+                    } else {
+                        $changed_items{$itemnum} = $key;
+                    }
+                }
+            }
+        }
+    }
+    # get lock on access controls for file.
+    my $lockhash = {
+                  $file_name."\0".'locked_access_records' => $env{'user.name'}.
+                                                       ':'.$env{'user.domain'},
+                   }; 
+    my $tries = 0;
+    my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
+   
+    while (($gotlock ne 'ok') && $tries <3) {
+        $tries ++;
+        sleep 1;
+        $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
+    }
+    if ($gotlock eq 'ok') {
+        my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
+        my ($tmp)=keys(%curr_permissions);
+        if ($tmp=~/^error:/) { undef(%curr_permissions); }
+        if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
+            my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
+            if (ref($curr_controls) eq 'HASH') {
+                foreach my $control_item (keys(%{$curr_controls})) {
+                    my ($itemnum) = ($control_item =~ /^([^:]+):/);
+                    if (defined($todelete{$itemnum})) {
+                        push(@deletions,$file_name."\0".$control_item);
+                    } else {
+                        if (defined($changed_items{$itemnum})) {
+                            $new_control{$changed_items{$itemnum}} = $now;
+                            push(@deletions,$file_name."\0".$control_item);
+                            $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
+                        } else {
+                            $new_control{$control_item} = $$curr_controls{$control_item};
+                        }
+                    }
+                }
+            }
+        }
+        $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
+        $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
+        $outcome = &put('file_permissions',\%new_values,$domain,$user);
+        #  remove lock
+        my @del_lock = ($file_name."\0".'locked_access_records');
+        my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
+        my ($file,$group);
+        if (&is_course($domain,$user)) {
+            ($group,$file) = split(/\//,$file_name,2);
+        } else {
+            $file = $file_name;
+        }
+        my $sqlresult =
+            &update_portfolio_table($user,$domain,$file,'portfolio_access',
+                                    $group);
+    } else {
+        $outcome = "error: could not obtain lockfile\n";  
+    }
+    return ($outcome,$deloutcome,\%new_values,\%translation);
+}
+
+sub make_public_indefinitely {
+    my ($requrl) = @_;
+    my $now = time;
+    my $action = 'activate';
+    my $aclnum = 0;
+    if (&is_portfolio_url($requrl)) {
+        my (undef,$udom,$unum,$file_name,$group) =
+            &parse_portfolio_url($requrl);
+        my $current_perms = &get_portfile_permissions($udom,$unum);
+        my %access_controls = &get_access_controls($current_perms,
+                                                   $group,$file_name);
+        foreach my $key (keys(%{$access_controls{$file_name}})) {
+            my ($num,$scope,$end,$start) = 
+                ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
+            if ($scope eq 'public') {
+                if ($start <= $now && $end == 0) {
+                    $action = 'none';
+                } else {
+                    $action = 'update';
+                    $aclnum = $num;
+                }
+                last;
+            }
+        }
+        if ($action eq 'none') {
+             return 'ok';
+        } else {
+            my %changes;
+            my $newend = 0;
+            my $newstart = $now;
+            my $newkey = $aclnum.':public_'.$newend.'_'.$newstart;
+            $changes{$action}{$newkey} = {
+                type => 'public',
+                time => {
+                    start => $newstart,
+                    end   => $newend,
+                },
+            };
+            my ($outcome,$deloutcome,$new_values,$translation) =
+                &modify_access_controls($file_name,\%changes,$udom,$unum);
+            return $outcome;
+        }
+    } else {
+        return 'invalid';
+    }
+}
+
+#------------------------------------------------------Get Marked as Read Only
+
+sub get_marked_as_readonly {
+    my ($domain,$user,$what,$group) = @_;
+    my $current_permissions = &get_portfile_permissions($domain,$user);
     my @readonly_files;
     my $cmp1=$what;
     if (ref($what)) { $cmp1=join('',@{$what}) };
-    while (my ($file_name,$value) = each(%current_permissions)) {
+    while (my ($file_name,$value) = each(%{$current_permissions})) {
+        if (defined($group)) {
+            if ($file_name !~ m-^\Q$group\E/-) {
+                next;
+            }
+        }
         if (ref($value) eq "ARRAY"){
             foreach my $stored_what (@{$value}) {
                 my $cmp2=$stored_what;
-                if (ref($stored_what)) { $cmp2=join('',@{$stored_what}) };
+                if (ref($stored_what) eq 'ARRAY') {
+                    $cmp2=join('',@{$stored_what});
+                }
                 if ($cmp1 eq $cmp2) {
                     push(@readonly_files, $file_name);
+                    last;
                 } elsif (!defined($what)) {
                     push(@readonly_files, $file_name);
+                    last;
                 }
             }
-        } 
+        }
     }
     return @readonly_files;
 }
 #-----------------------------------------------------------Get Marked as Read Only Hash
 
 sub get_marked_as_readonly_hash {
-    my ($domain,$user,$what) = @_;
-    my %current_permissions = &dump('file_permissions',$domain,$user);
-    my ($tmp)=keys(%current_permissions);
-    if ($tmp=~/^error:/) { undef(%current_permissions); }
-
+    my ($current_permissions,$group,$what) = @_;
     my %readonly_files;
-    while (my ($file_name,$value) = each(%current_permissions)) {
+    while (my ($file_name,$value) = each(%{$current_permissions})) {
+        if (defined($group)) {
+            if ($file_name !~ m-^\Q$group\E/-) {
+                next;
+            }
+        }
         if (ref($value) eq "ARRAY"){
             foreach my $stored_what (@{$value}) {
-                if ($stored_what eq $what) {
-                    $readonly_files{$file_name} = 'locked';
-                } elsif (!defined($what)) {
-                    $readonly_files{$file_name} = 'locked';
-                }
+                if (ref($stored_what) eq 'ARRAY') {
+                    foreach my $lock_descriptor(@{$stored_what}) {
+                        if ($lock_descriptor eq 'graded') {
+                            $readonly_files{$file_name} = 'graded';
+                        } elsif ($lock_descriptor eq 'handback') {
+                            $readonly_files{$file_name} = 'handback';
+                        } else {
+                            if (!exists($readonly_files{$file_name})) {
+                                $readonly_files{$file_name} = 'locked';
+                            }
+                        }
+                    }
+                } 
             }
         } 
     }
@@ -4321,24 +5678,28 @@ sub get_marked_as_readonly_hash {
 sub unmark_as_readonly {
     # unmarks $file_name (if $file_name is defined), or all files locked by $what 
     # for portfolio submissions, $what contains [$symb,$crsid] 
-    my ($domain,$user,$what,$file_name) = @_;
+    my ($domain,$user,$what,$file_name,$group) = @_;
+    $file_name = &declutter_portfile($file_name);
     my $symb_crs = $what;
     if (ref($what)) { $symb_crs=join('',@$what); }
-    my %current_permissions = &dump('file_permissions',$domain,$user);
+    my %current_permissions = &dump('file_permissions',$domain,$user,$group);
     my ($tmp)=keys(%current_permissions);
     if ($tmp=~/^error:/) { undef(%current_permissions); }
-    my @readonly_files = &get_marked_as_readonly($domain,$user,$what);
+    my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
     foreach my $file (@readonly_files) {
-	if (defined($file_name) && ($file_name ne $file)) { next; }
+	my $clean_file = &declutter_portfile($file);
+	if (defined($file_name) && ($file_name ne $clean_file)) { next; }
 	my $current_locks = $current_permissions{$file};
         my @new_locks;
         my @del_keys;
         if (ref($current_locks) eq "ARRAY"){
             foreach my $locker (@{$current_locks}) {
                 my $compare=$locker;
-                if (ref($locker)) { $compare=join('',@{$locker}) };
-                if ($compare ne $symb_crs) {
-                    push(@new_locks, $locker);
+                if (ref($locker) eq 'ARRAY') {
+                    $compare=join('',@{$locker});
+                    if ($compare ne $symb_crs) {
+                        push(@new_locks, $locker);
+                    }
                 }
             }
             if (scalar(@new_locks) > 0) {
@@ -4378,70 +5739,58 @@ sub dirlist {
 
     if($udom) {
         if($uname) {
-            my $listing=reply('ls2:'.$dirRoot.'/'.$uri,
-                              homeserver($uname,$udom));
+            my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
+				 &homeserver($uname,$udom));
             my @listing_results;
             if ($listing eq 'unknown_cmd') {
-                $listing=reply('ls:'.$dirRoot.'/'.$uri,
-                               homeserver($uname,$udom));
+                $listing = &reply('ls:'.$dirRoot.'/'.$uri,
+				  &homeserver($uname,$udom));
                 @listing_results = split(/:/,$listing);
             } else {
                 @listing_results = map { &unescape($_); } split(/:/,$listing);
             }
             return @listing_results;
         } elsif(!defined($alternateDirectoryRoot)) {
-            my $tryserver;
-            my %allusers=();
-            foreach $tryserver (keys %libserv) {
-                if($hostdom{$tryserver} eq $udom) {
-                    my $listing=reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
-                                      $udom, $tryserver);
-                    my @listing_results;
-                    if ($listing eq 'unknown_cmd') {
-                        $listing=reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
-                                       $udom, $tryserver);
-                        @listing_results = split(/:/,$listing);
-                    } else {
-                        @listing_results =
-                            map { &unescape($_); } split(/:/,$listing);
-                    }
-                    if ($listing_results[0] ne 'no_such_dir' && 
-                        $listing_results[0] ne 'empty'       &&
-                        $listing_results[0] ne 'con_lost') {
-                        foreach (@listing_results) {
-                            my ($entry,@stat)=split(/&/,$_);
-                            $allusers{$entry}=1;
-                        }
-                    }
-                }
+            my %allusers;
+	    my %servers = &get_servers($udom,'library');
+	    foreach my $tryserver (keys(%servers)) {
+		my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
+				     $udom, $tryserver);
+		my @listing_results;
+		if ($listing eq 'unknown_cmd') {
+		    $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
+				      $udom, $tryserver);
+		    @listing_results = split(/:/,$listing);
+		} else {
+		    @listing_results =
+			map { &unescape($_); } split(/:/,$listing);
+		}
+		if ($listing_results[0] ne 'no_such_dir' && 
+		    $listing_results[0] ne 'empty'       &&
+		    $listing_results[0] ne 'con_lost') {
+		    foreach my $line (@listing_results) {
+			my ($entry) = split(/&/,$line,2);
+			$allusers{$entry} = 1;
+		    }
+		}
             }
             my $alluserstr='';
-            foreach (sort keys %allusers) {
-                $alluserstr.=$_.'&user:';
+            foreach my $user (sort(keys(%allusers))) {
+                $alluserstr.=$user.'&user:';
             }
             $alluserstr=~s/:$//;
             return split(/:/,$alluserstr);
         } else {
-            my @emptyResults = ();
-            push(@emptyResults, 'missing user name');
-            return split(':',@emptyResults);
+            return ('missing user name');
         }
     } elsif(!defined($alternateDirectoryRoot)) {
-        my $tryserver;
-        my %alldom=();
-        foreach $tryserver (keys %libserv) {
-            $alldom{$hostdom{$tryserver}}=1;
-        }
-        my $alldomstr='';
-        foreach (sort keys %alldom) {
-            $alldomstr.=$perlvar{'lonDocRoot'}.'/res/'.$_.'/&domain:';
-        }
-        $alldomstr=~s/:$//;
-        return split(/:/,$alldomstr);       
-    } else {
-        my @emptyResults = ();
-        push(@emptyResults, 'missing domain');
-        return split(':',@emptyResults);
+        my @all_domains = sort(&all_domains());
+         foreach my $domain (@all_domains) {
+             $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
+         }
+         return @all_domains;
+     } else {
+        return ('missing domain');
     }
 }
 
@@ -4459,8 +5808,8 @@ sub dirlist {
 ##
 sub GetFileTimestamp {
     my ($studentDomain,$studentName,$filename,$root)=@_;
-    $studentDomain=~s/\W//g;
-    $studentName=~s/\W//g;
+    $studentDomain = &LONCAPA::clean_domain($studentDomain);
+    $studentName   = &LONCAPA::clean_username($studentName);
     my $subdir=$studentName.'__';
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
     my $proname="$studentDomain/$subdir/$studentName";
@@ -4476,13 +5825,64 @@ sub GetFileTimestamp {
     }
 }
 
+sub stat_file {
+    my ($uri) = @_;
+    $uri = &clutter_with_no_wrapper($uri);
+
+    my ($udom,$uname,$file,$dir);
+    if ($uri =~ m-^/(uploaded|editupload)/-) {
+	($udom,$uname,$file) =
+	    ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
+	$file = 'userfiles/'.$file;
+	$dir = &propath($udom,$uname);
+    }
+    if ($uri =~ m-^/res/-) {
+	($udom,$uname) = 
+	    ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
+	$file = $uri;
+    }
+
+    if (!$udom || !$uname || !$file) {
+	# unable to handle the uri
+	return ();
+    }
+
+    my ($result) = &dirlist($file,$udom,$uname,$dir);
+    my @stats = split('&', $result);
+    
+    if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
+	shift(@stats); #filename is first
+	return @stats;
+    }
+    return ();
+}
+
 # -------------------------------------------------------- Value of a Condition
 
+# gets the value of a specific preevaluated condition
+#    stored in the string  $env{user.state.<cid>}
+# or looks up a condition reference in the bighash and if if hasn't
+# already been evaluated recurses into docondval to get the value of
+# the condition, then memoizing it to 
+#   $env{user.state.<cid>.<condition>}
 sub directcondval {
     my $number=shift;
     if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
 	&Apache::lonuserstate::evalstate();
     }
+    if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
+	return $env{'user.state.'.$env{'request.course.id'}.".$number"};
+    } elsif ($number =~ /^_/) {
+	my $sub_condition;
+	if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
+		&GDBM_READER(),0640)) {
+	    $sub_condition=$bighash{'conditions'.$number};
+	    untie(%bighash);
+	}
+	my $value = &docondval($sub_condition);
+	&appenv('user.state.'.$env{'request.course.id'}.".$number" => $value);
+	return $value;
+    }
     if ($env{'user.state.'.$env{'request.course.id'}}) {
        return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
     } else {
@@ -4490,43 +5890,49 @@ sub directcondval {
     }
 }
 
+# get the collection of conditions for this resource
 sub condval {
     my $condidx=shift;
-    my $result=0;
     my $allpathcond='';
-    foreach (split(/\|/,$condidx)) {
-       if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$_})) {
-	   $allpathcond.=
-               '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$_}.')|';
-       }
+    foreach my $cond (split(/\|/,$condidx)) {
+	if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
+	    $allpathcond.=
+		'('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
+	}
     }
     $allpathcond=~s/\|$//;
-    if ($env{'request.course.id'}) {
-       if ($allpathcond) {
-          my $operand='|';
-	  my @stack;
-           foreach ($allpathcond=~/(\d+|\(|\)|\&|\|)/g) {
-              if ($_ eq '(') {
-                 push @stack,($operand,$result)
-              } elsif ($_ eq ')') {
-                  my $before=pop @stack;
-		  if (pop @stack eq '&') {
-		      $result=$result>$before?$before:$result;
-                  } else {
-                      $result=$result>$before?$result:$before;
-                  }
-              } elsif (($_ eq '&') || ($_ eq '|')) {
-                  $operand=$_;
-              } else {
-                  my $new=directcondval($_);
-                  if ($operand eq '&') {
-                     $result=$result>$new?$new:$result;
-                  } else {
-                     $result=$result>$new?$result:$new;
-                  }
-              }
-          }
-       }
+    return &docondval($allpathcond);
+}
+
+#evaluates an expression of conditions
+sub docondval {
+    my ($allpathcond) = @_;
+    my $result=0;
+    if ($env{'request.course.id'}
+	&& defined($allpathcond)) {
+	my $operand='|';
+	my @stack;
+	foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
+	    if ($chunk eq '(') {
+		push @stack,($operand,$result);
+	    } elsif ($chunk eq ')') {
+		my $before=pop @stack;
+		if (pop @stack eq '&') {
+		    $result=$result>$before?$before:$result;
+		} else {
+		    $result=$result>$before?$result:$before;
+		}
+	    } elsif (($chunk eq '&') || ($chunk eq '|')) {
+		$operand=$chunk;
+	    } else {
+		my $new=directcondval($chunk);
+		if ($operand eq '&') {
+		    $result=$result>$new?$new:$result;
+		} else {
+		    $result=$result>$new?$result:$new;
+		}
+	    }
+	}
     }
     return $result;
 }
@@ -4539,7 +5945,15 @@ sub devalidatecourseresdata {
     &devalidate_cache_new('courseres',$hashid);
 }
 
+
 # --------------------------------------------------- Course Resourcedata Query
+#
+#  Parameters:
+#      $coursenum    - Number of the course.
+#      $coursedomain - Domain at which the course was created.
+#  Returns:
+#     A hash of the course parameters along (I think) with timestamps
+#     and version info.
 
 sub get_courseresdata {
     my ($coursenum,$coursedomain)=@_;
@@ -4598,7 +6012,21 @@ sub get_userresdata {
     }
     return $tmp;
 }
-
+#----------------------------------------------- resdata - return resource data
+#  Purpose:
+#    Return resource data for either users or for a course.
+#  Parameters:
+#     $name      - Course/user name.
+#     $domain    - Name of the domain the user/course is registered on.
+#     $type      - Type of thing $name is (must be 'course' or 'user'
+#     @which     - Array of names of resources desired.
+#  Returns:
+#     The value of the first reasource in @which that is found in the
+#     resource hash.
+#  Exceptional Conditions:
+#     If the $type passed in is not valid (not the string 'course' or 
+#     'user', an undefined  reference is returned.
+#     If none of the resources are found, an undef is returned
 sub resdata {
     my ($name,$domain,$type,@which)=@_;
     my $result;
@@ -4643,8 +6071,8 @@ sub EXT_cache_set {
 
 # --------------------------------------------------------- Value of a Variable
 sub EXT {
-    my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
 
+    my ($varname,$symbparm,$udom,$uname,$usection,$recurse)=@_;
     unless ($varname) { return ''; }
     #get real user name/domain, courseid and symb
     my $courseid;
@@ -4653,8 +6081,7 @@ sub EXT {
 	$symbparm=&get_symb_from_alias($symbparm);
     }
     if (!($uname && $udom)) {
-      (my $cursymb,$courseid,$udom,$uname,$publicuser)=
-	  &Apache::lonxml::whichuser($symbparm);
+      (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
       if (!$symbparm) {	$symbparm=$cursymb; }
     } else {
 	$courseid=$env{'request.course.id'};
@@ -4677,8 +6104,14 @@ sub EXT {
 	    if ( (defined($Apache::lonhomework::parsing_a_problem)
 		  || defined($Apache::lonhomework::parsing_a_task))
 		 &&
-		 ($symbparm eq &symbread()) ) {
-		return $Apache::lonhomework::history{$qualifierrest};
+		 ($symbparm eq &symbread()) ) {	
+		# if we are in the middle of processing the resource the
+		# get the value we are planning on committing
+                if (defined($Apache::lonhomework::results{$qualifierrest})) {
+                    return $Apache::lonhomework::results{$qualifierrest};
+                } else {
+                    return $Apache::lonhomework::history{$qualifierrest};
+                }
 	    } else {
 		my %restored;
 		if ($publicuser || $env{'request.state'} eq 'construct') {
@@ -4758,10 +6191,21 @@ sub EXT {
         return $env{'course.'.$courseid.'.'.$spacequalifierrest};
     } elsif ($realm eq 'resource') {
 
-	my $section;
 	if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
 	    if (!$symbparm) { $symbparm=&symbread(); }
 	}
+
+	if ($space eq 'title') {
+	    if (!$symbparm) { $symbparm = $env{'request.filename'}; }
+	    return &gettitle($symbparm);
+	}
+	
+	if ($space eq 'map') {
+	    my ($map) = &decode_symb($symbparm);
+	    return &symbread($map);
+	}
+
+	my ($section, $group, @groups);
 	my ($courselevelm,$courselevel);
 	if ($symbparm && defined($courseid) && 
 	    $courseid eq $env{'request.course.id'}) {
@@ -4770,7 +6214,7 @@ sub EXT {
 
 # ----------------------------------------------------- Cascading lookup scheme
 	    my $symbp=$symbparm;
-	    my $mapp=(&decode_symb($symbp))[0];
+	    my $mapp=&deversion((&decode_symb($symbp))[0]);
 
 	    my $symbparm=$symbp.'.'.$spacequalifierrest;
 	    my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
@@ -4778,12 +6222,15 @@ sub EXT {
 	    if (($env{'user.name'} eq $uname) &&
 		($env{'user.domain'} eq $udom)) {
 		$section=$env{'request.course.sec'};
+                @groups = split(/:/,$env{'request.course.groups'});  
+                @groups=&sort_course_groups($courseid,@groups); 
 	    } else {
 		if (! defined($usection)) {
 		    $section=&getsection($udom,$uname,$courseid);
 		} else {
 		    $section = $usection;
 		}
+                @groups = &get_users_groups($udom,$uname,$courseid);
 	    }
 
 	    my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
@@ -4799,12 +6246,17 @@ sub EXT {
 	    my $userreply=&resdata($uname,$udom,'user',
 				       ($courselevelr,$courselevelm,
 					$courselevel));
-
 	    if (defined($userreply)) { return $userreply; }
 
 # ------------------------------------------------ second, check some of course
+            my $coursereply;
+            if (@groups > 0) {
+                $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
+                                       $mapparm,$spacequalifierrest);
+                if (defined($coursereply)) { return $coursereply; }
+            }
 
-	    my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
+	    $coursereply=&resdata($env{'course.'.$courseid.'.num'},
 				     $env{'course.'.$courseid.'.domain'},
 				     'course',
 				     ($seclevelr,$seclevelm,$seclevel,
@@ -4866,6 +6318,9 @@ sub EXT {
 	if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
 	    return $env{'environment.'.$spacequalifierrest};
 	} else {
+	    if ($uname eq 'anonymous' && $udom eq '') {
+		return '';
+	    }
 	    my %returnhash=&userenvironment($udom,$uname,
 					    $spacequalifierrest);
 	    return $returnhash{$spacequalifierrest};
@@ -4875,16 +6330,65 @@ sub EXT {
 	if ($space eq 'time') {
 	    return time;
         }
+    } elsif ($realm eq 'server') {
+# ----------------------------------------------------------------- system.time
+	if ($space eq 'name') {
+	    return $ENV{'SERVER_NAME'};
+        }
     }
     return '';
 }
 
+sub check_group_parms {
+    my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
+    my @groupitems = ();
+    my $resultitem;
+    my @levels = ($symbparm,$mapparm,$what);
+    foreach my $group (@{$groups}) {
+        foreach my $level (@levels) {
+             my $item = $courseid.'.['.$group.'].'.$level;
+             push(@groupitems,$item);
+        }
+    }
+    my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
+                            $env{'course.'.$courseid.'.domain'},
+                                     'course',@groupitems);
+    return $coursereply;
+}
+
+sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
+    my ($courseid,@groups) = @_;
+    @groups = sort(@groups);
+    return @groups;
+}
+
 sub packages_tab_default {
     my ($uri,$varname)=@_;
     my (undef,$part,$name)=split(/\./,$varname);
-    my $packages=&metadata($uri,'packages');
-    foreach my $package (split(/,/,$packages)) {
+
+    my (@extension,@specifics,$do_default);
+    foreach my $package (split(/,/,&metadata($uri,'packages'))) {
 	my ($pack_type,$pack_part)=split(/_/,$package,2);
+	if ($pack_type eq 'default') {
+	    $do_default=1;
+	} elsif ($pack_type eq 'extension') {
+	    push(@extension,[$package,$pack_type,$pack_part]);
+	} elsif ($pack_part eq $part || $pack_type eq 'part') {
+	    # only look at packages defaults for packages that this id is
+	    push(@specifics,[$package,$pack_type,$pack_part]);
+	}
+    }
+    # first look for a package that matches the requested part id
+    foreach my $package (@specifics) {
+	my (undef,$pack_type,$pack_part)=@{$package};
+	next if ($pack_part ne $part);
+	if (defined($packagetab{"$pack_type&$name&default"})) {
+	    return $packagetab{"$pack_type&$name&default"};
+	}
+    }
+    # look for any possible matching non extension_ package
+    foreach my $package (@specifics) {
+	my (undef,$pack_type,$pack_part)=@{$package};
 	if (defined($packagetab{"$pack_type&$name&default"})) {
 	    return $packagetab{"$pack_type&$name&default"};
 	}
@@ -4893,6 +6397,20 @@ sub packages_tab_default {
 	    return $packagetab{$pack_type."_".$pack_part."&$name&default"};
 	}
     }
+    # look for any posible extension_ match
+    foreach my $package (@extension) {
+	my ($package,$pack_type)=@{$package};
+	if (defined($packagetab{"$pack_type&$name&default"})) {
+	    return $packagetab{"$pack_type&$name&default"};
+	}
+	if (defined($packagetab{$package."&$name&default"})) {
+	    return $packagetab{$package."&$name&default"};
+	}
+    }
+    # look for a global default setting
+    if ($do_default && defined($packagetab{"default&$name&default"})) {
+	return $packagetab{"default&$name&default"};
+    }
     return undef;
 }
 
@@ -4923,7 +6441,7 @@ sub metadata {
 	(($uri =~ m|^/*adm/|) && 
 	     ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
         ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
-	($uri =~ m|home/[^/]+/public_html/|)) {
+	($uri =~ m|home/$match_username/public_html/|)) {
 	return undef;
     }
     my $filename=$uri;
@@ -4954,7 +6472,7 @@ sub metadata {
         my %metathesekeys=();
         unless ($filename=~/\.meta$/) { $filename.='.meta'; }
 	my $metastring;
-	if ($uri !~ m -^(uploaded|editupload)/-) {
+	if ($uri !~ m -^(editupload)/-) {
 	    my $file=&filelocation('',&clutter($filename));
 	    #push(@{$metaentry{$uri.'.file'}},$file);
 	    $metastring=&getfile($file);
@@ -4978,16 +6496,16 @@ sub metadata {
 		    } else {
 			$metaentry{':packages'}=$package.$keyroot;
 		    }
-		    foreach (sort keys %packagetab) {
+		    foreach my $pack_entry (keys(%packagetab)) {
 			my $part=$keyroot;
 			$part=~s/^\_//;
-			if ($_=~/^\Q$package\E\&/ || 
-			    $_=~/^\Q$package\E_0\&/) {
-			    my ($pack,$name,$subp)=split(/\&/,$_);
+			if ($pack_entry=~/^\Q$package\E\&/ || 
+			    $pack_entry=~/^\Q$package\E_0\&/) {
+			    my ($pack,$name,$subp)=split(/\&/,$pack_entry);
 			    # ignore package.tab specified default values
                             # here &package_tab_default() will fetch those
 			    if ($subp eq 'default') { next; }
-			    my $value=$packagetab{$_};
+			    my $value=$packagetab{$pack_entry};
 			    my $unikey;
 			    if ($pack =~ /_0$/) {
 				$unikey='parameter_0_'.$name;
@@ -5035,11 +6553,12 @@ sub metadata {
 			    my $dir=$filename;
 			    $dir=~s|[^/]*$||;
 			    $location=&filelocation($dir,$location);
-			    foreach (sort(split(/\,/,&metadata($uri,'keys',
-							       $location,$unikey,
-							       $depthcount+1)))) {
-				$metaentry{':'.$_}=$metaentry{':'.$_};
-				$metathesekeys{$_}=1;
+			    my $metadata = 
+				&metadata($uri,'keys', $location,$unikey,
+					  $depthcount+1);
+			    foreach my $meta (split(',',$metadata)) {
+				$metaentry{':'.$meta}=$metaentry{':'.$meta};
+				$metathesekeys{$meta}=1;
 			    }
 			}
 		    } else { 
@@ -5048,8 +6567,9 @@ sub metadata {
 			    $unikey.='_'.$token->[2]->{'name'}; 
 			}
 			$metathesekeys{$unikey}=1;
-			foreach (@{$token->[3]}) {
-			    $metaentry{':'.$unikey.'.'.$_}=$token->[2]->{$_};
+			foreach my $param (@{$token->[3]}) {
+			    $metaentry{':'.$unikey.'.'.$param} =
+				$token->[2]->{$param};
 			}
 			my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
 			my $default=$metaentry{':'.$unikey.'.default'};
@@ -5070,14 +6590,19 @@ sub metadata {
 	    }
 	}
 	my ($extension) = ($uri =~ /\.(\w+)$/);
-	foreach my $key (sort(keys(%packagetab))) {
+	$extension = lc($extension);
+	if ($extension eq 'htm') { $extension='html'; }
+
+	foreach my $key (keys(%packagetab)) {
 	    #no specific packages #how's our extension
 	    if ($key!~/^extension_\Q$extension\E&/) { next; }
 	    &metadata_create_package_def($uri,$key,'extension_'.$extension,
 					 \%metathesekeys);
 	}
-	if (!exists($metaentry{':packages'})) {
-	    foreach my $key (sort(keys(%packagetab))) {
+
+	if (!exists($metaentry{':packages'})
+	    || $packagetab{"import_defaults&extension_$extension"}) {
+	    foreach my $key (keys(%packagetab)) {
 		#no specific packages well let's get default then
 		if ($key!~/^default&/) { next; }
 		&metadata_create_package_def($uri,$key,'default',
@@ -5095,18 +6620,25 @@ sub metadata {
 		my $dir=$filename;
 		$dir=~s|[^/]*$||;
 		$location=&filelocation($dir,$location);
-		foreach (sort(split(/\,/,&metadata($uri,'keys',
-						   $location,'_rights',
-						   $depthcount+1)))) {
-		    #$metaentry{':'.$_}=$metacache{$uri}->{':'.$_};
-		    $metathesekeys{$_}=1;
+		my $rights_metadata =
+		    &metadata($uri,'keys',$location,'_rights',
+			      $depthcount+1);
+		foreach my $rights (split(',',$rights_metadata)) {
+		    #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
+		    $metathesekeys{$rights}=1;
 		}
 	    }
 	}
-	$metaentry{':keys'}=join(',',keys %metathesekeys);
+	# uniqifiy package listing
+	my %seen;
+	my @uniq_packages =
+	    grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
+	$metaentry{':packages'} = join(',',@uniq_packages);
+
+	$metaentry{':keys'} = join(',',keys(%metathesekeys));
 	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
 	$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
-	&do_cache_new('meta',$uri,\%metaentry,60*60*24);
+	&do_cache_new('meta',$uri,\%metaentry,60*60);
 # this is the end of "was not already recently cached
     }
     return $metaentry{':'.$what};
@@ -5139,7 +6671,7 @@ sub metadata_create_package_def {
 sub metadata_generate_part0 {
     my ($metadata,$metacache,$uri) = @_;
     my %allnames;
-    foreach my $metakey (sort keys %$metadata) {
+    foreach my $metakey (keys(%$metadata)) {
 	if ($metakey=~/^parameter\_(.*)/) {
 	  my $part=$$metacache{':'.$metakey.'.part'};
 	  my $name=$$metacache{':'.$metakey.'.name'};
@@ -5164,6 +6696,17 @@ sub metadata_generate_part0 {
     }
 }
 
+# ------------------------------------------------------ Devalidate title cache
+
+sub devalidate_title_cache {
+    my ($url)=@_;
+    if (!$env{'request.course.id'}) { return; }
+    my $symb=&symbread($url);
+    if (!$symb) { return; }
+    my $key=$env{'request.course.id'}."\0".$symb;
+    &devalidate_cache_new('title',$key);
+}
+
 # ------------------------------------------------- Get the title of a resource
 
 sub gettitle {
@@ -5198,14 +6741,21 @@ sub gettitle {
 sub get_slot {
     my ($which,$cnum,$cdom)=@_;
     if (!$cnum || !$cdom) {
-	(undef,my $courseid)=&Apache::lonxml::whichuser();
+	(undef,my $courseid)=&whichuser();
 	$cdom=$env{'course.'.$courseid.'.domain'};
 	$cnum=$env{'course.'.$courseid.'.num'};
     }
-    my %slotinfo=&get('slots',[$which],$cdom,$cnum);
-    &Apache::lonhomework::showhash(%slotinfo);
-    my ($tmp)=keys(%slotinfo);
-    if ($tmp=~/^error:/) { return (); }
+    my $key=join("\0",'slots',$cdom,$cnum,$which);
+    my %slotinfo;
+    if (exists($remembered{$key})) {
+	$slotinfo{$which} = $remembered{$key};
+    } else {
+	%slotinfo=&get('slots',[$which],$cdom,$cnum);
+	&Apache::lonhomework::showhash(%slotinfo);
+	my ($tmp)=keys(%slotinfo);
+	if ($tmp=~/^error:/) { return (); }
+	$remembered{$key} = $slotinfo{$which};
+    }
     if (ref($slotinfo{$which}) eq 'HASH') {
 	return %{$slotinfo{$which}};
     }
@@ -5220,9 +6770,12 @@ sub symblist {
     if (($env{'request.course.fn'}) && (%newhash)) {
         if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                       &GDBM_WRCREAT(),0640)) {
-	    foreach (keys %newhash) {
-                $hash{declutter($_)}=&encode_symb($mapname,$newhash{$_}->[1],
-						  $newhash{$_}->[0]);
+	    foreach my $url (keys %newhash) {
+		next if ($url eq 'last_known'
+			 && $env{'form.no_update_last_known'});
+		$hash{declutter($url)}=&encode_symb($mapname,
+						    $newhash{$url}->[1],
+						    $newhash{$url}->[0]);
             }
             if (untie(%hash)) {
 		return 'ok';
@@ -5237,8 +6790,6 @@ sub symblist {
 sub symbverify {
     my ($symb,$thisurl)=@_;
     my $thisfn=$thisurl;
-# wrapper not part of symbs
-    $thisfn=~s/^\/adm\/wrapper//;
     $thisfn=&declutter($thisfn);
 # direct jump to resource in page or to a sequence - will construct own symbs
     if ($thisfn=~/\.(page|sequence)$/) { return 1; }
@@ -5262,13 +6813,13 @@ sub symbverify {
         }
         if ($ids) {
 # ------------------------------------------------------------------- Has ID(s)
-	    foreach (split(/\,/,$ids)) {
-	       my ($mapid,$resid)=split(/\./,$_);
+	    foreach my $id (split(/\,/,$ids)) {
+	       my ($mapid,$resid)=split(/\./,$id);
                if (
   &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
    eq $symb) { 
 		   if (($env{'request.role.adv'}) ||
-		       $bighash{'encrypted_'.$_} eq $env{'request.enc'}) {
+		       $bighash{'encrypted_'.$id} eq $env{'request.enc'}) {
 		       $okay=1; 
 		   }
 	       }
@@ -5293,6 +6844,7 @@ sub symbclean {
 # remove wrapper
 
     $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
+    $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
     return $symb;
 }
 
@@ -5369,6 +6921,9 @@ sub symbread {
         if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
             $targetfn = 'adm/wrapper/'.$thisfn;
         }
+	if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
+	    $targetfn=$1;
+	}
         if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                       &GDBM_READER(),0640)) {
 	    $syval=$hash{$targetfn};
@@ -5407,10 +6962,10 @@ sub symbread {
                  } elsif (!$donotrecurse) {
 # ------------------------------------------ There is more than one possibility
                      my $realpossible=0;
-                     foreach (@possibilities) {
-			 my $file=$bighash{'src_'.$_};
+                     foreach my $id (@possibilities) {
+			 my $file=$bighash{'src_'.$id};
                          if (&allowed('bre',$file)) {
-         		    my ($mapid,$resid)=split(/\./,$_);
+         		    my ($mapid,$resid)=split(/\./,$id);
                             if ($bighash{'map_type_'.$mapid} ne 'page') {
 				$realpossible++;
                                 $syval=&encode_symb($bighash{'map_id_'.$mapid},
@@ -5517,7 +7072,7 @@ sub latest_rnd_algorithm_id {
 
 sub get_rand_alg {
     my ($courseid)=@_;
-    if (!$courseid) { $courseid=(&Apache::lonxml::whichuser())[1]; }
+    if (!$courseid) { $courseid=(&whichuser())[1]; }
     if ($courseid) {
 	return $env{"course.$courseid.rndseed"};
     }
@@ -5542,8 +7097,7 @@ sub getCODE {
 
 sub rndseed {
     my ($symb,$courseid,$domain,$username)=@_;
-
-    my ($wsymb,$wcourseid,$wdomain,$wusername)=&Apache::lonxml::whichuser();
+    my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
     if (!$symb) {
 	unless ($symb=$wsymb) { return time; }
     }
@@ -5551,6 +7105,7 @@ sub rndseed {
     if (!$domain) { $domain=$wdomain; }
     if (!$username) { $username=$wusername }
     my $which=&get_rand_alg();
+
     if (defined(&getCODE())) {
 	if ($which eq '64bit5') {
 	    return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
@@ -5584,8 +7139,8 @@ sub rndseed_32bit {
 	my $domainseed=unpack("%32C*",$domain) << 7;
 	my $courseseed=unpack("%32C*",$courseid);
 	my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
-	#&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num:$symb");
+	#&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+	#&logthis("rndseed :$num:$symb");
 	if ($_64bit) { $num=(($num<<32)>>32); }
 	return $num;
     }
@@ -5605,9 +7160,8 @@ sub rndseed_64bit {
 	
 	my $num1=$symbchck+$symbseed+$namechck;
 	my $num2=$nameseed+$domainseed+$courseseed;
-	#&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num:$symb");
-	if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
+	#&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+	#&logthis("rndseed :$num:$symb");
 	if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
 	return "$num1,$num2";
     }
@@ -5629,8 +7183,9 @@ sub rndseed_64bit2 {
 	
 	my $num1=$symbchck+$symbseed+$namechck;
 	my $num2=$nameseed+$domainseed+$courseseed;
-	#&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num:$symb");
+	#&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+	#&logthis("rndseed :$num:$symb");
+	if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
 	return "$num1,$num2";
     }
 }
@@ -5651,8 +7206,8 @@ sub rndseed_64bit3 {
 	
 	my $num1=$symbchck+$symbseed+$namechck;
 	my $num2=$nameseed+$domainseed+$courseseed;
-	#&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
+	#&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+	#&logthis("rndseed :$num1:$num2:$_64bit");
 	if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
 	
 	return "$num1:$num2";
@@ -5675,8 +7230,8 @@ sub rndseed_64bit4 {
 	
 	my $num1=$symbchck+$symbseed+$namechck;
 	my $num2=$nameseed+$domainseed+$courseseed;
-	#&Apache::lonxml::debug("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num1:$num2:$_64bit");
+	#&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
+	#&logthis("rndseed :$num1:$num2:$_64bit");
 	if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
 	
 	return "$num1:$num2";
@@ -5700,8 +7255,8 @@ sub rndseed_CODE_64bit {
 	my $courseseed=unpack("%32S*",$courseid.' ');
 	my $num1=$symbseed+$CODEchck;
 	my $num2=$CODEseed+$courseseed+$symbchck;
-	#&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
+	#&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
+	#&logthis("rndseed :$num1:$num2:$symb");
 	if ($_64bit) { $num1=(($num1<<32)>>32); }
 	if ($_64bit) { $num2=(($num2<<32)>>32); }
 	return "$num1:$num2";
@@ -5719,8 +7274,8 @@ sub rndseed_CODE_64bit4 {
 	my $courseseed=unpack("%32S*",$courseid.' ');
 	my $num1=$symbseed+$CODEchck;
 	my $num2=$CODEseed+$courseseed+$symbchck;
-	#&Apache::lonxml::debug("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
-	#&Apache::lonxml::debug("rndseed :$num1:$num2:$symb");
+	#&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
+	#&logthis("rndseed :$num1:$num2:$symb");
 	if ($_64bit) { $num1=(($num1<<32)>>32); }
 	if ($_64bit) { $num2=(($num2<<32)>>32); }
 	return "$num1:$num2";
@@ -5745,13 +7300,14 @@ sub setup_random_from_rndseed {
 }
 
 sub latest_receipt_algorithm_id {
-    return 'receipt2';
+    return 'receipt3';
 }
 
 sub recunique {
     my $fucourseid=shift;
     my $unique;
-    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
+    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
+	$env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
 	$unique=$env{"course.$fucourseid.internal.encseed"};
     } else {
 	$unique=$perlvar{'lonReceipt'};
@@ -5762,7 +7318,8 @@ sub recunique {
 sub recprefix {
     my $fucourseid=shift;
     my $prefix;
-    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
+    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
+	$env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
 	$prefix=$env{"course.$fucourseid.internal.encpref"};
     } else {
 	$prefix=$perlvar{'lonHostID'};
@@ -5772,17 +7329,24 @@ sub recprefix {
 
 sub ireceipt {
     my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
+
+    my $return =&recprefix($fucourseid).'-';
+
+    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
+	$env{'request.state'} eq 'construct') {
+	$return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
+	return $return;
+    }
+
     my $cuname=unpack("%32C*",$funame);
     my $cudom=unpack("%32C*",$fudom);
     my $cucourseid=unpack("%32C*",$fucourseid);
     my $cusymb=unpack("%32C*",$fusymb);
     my $cunique=&recunique($fucourseid);
     my $cpart=unpack("%32S*",$part);
-    my $return =&recprefix($fucourseid).'-';
-    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
-	$env{'request.state'} eq 'construct') {
-	&Apache::lonxml::debug("doing receipt2  using parts $cpart, uname $cuname and udom $cudom gets  ".($cpart%$cuname).
-			       " and ".($cpart%$cudom));
+    if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
+
+	#&logthis("doing receipt2  using parts $cpart, uname $cuname and udom $cudom gets  ".($cpart%$cuname)." and ".($cpart%$cudom));
 			       
 	$return.= ($cunique%$cuname+
 		   $cunique%$cudom+
@@ -5805,10 +7369,48 @@ sub ireceipt {
 
 sub receipt {
     my ($part)=@_;
-    my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
+    my ($symb,$courseid,$domain,$name) = &whichuser();
     return &ireceipt($name,$domain,$courseid,$symb,$part);
 }
 
+sub whichuser {
+    my ($passedsymb)=@_;
+    my ($symb,$courseid,$domain,$name,$publicuser);
+    if (defined($env{'form.grade_symb'})) {
+	my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
+	my $allowed=&allowed('vgr',$tmp_courseid);
+	if (!$allowed &&
+	    exists($env{'request.course.sec'}) &&
+	    $env{'request.course.sec'} !~ /^\s*$/) {
+	    $allowed=&allowed('vgr',$tmp_courseid.
+			      '/'.$env{'request.course.sec'});
+	}
+	if ($allowed) {
+	    ($symb)=&get_env_multiple('form.grade_symb');
+	    $courseid=$tmp_courseid;
+	    ($domain)=&get_env_multiple('form.grade_domain');
+	    ($name)=&get_env_multiple('form.grade_username');
+	    return ($symb,$courseid,$domain,$name,$publicuser);
+	}
+    }
+    if (!$passedsymb) {
+	$symb=&symbread();
+    } else {
+	$symb=$passedsymb;
+    }
+    $courseid=$env{'request.course.id'};
+    $domain=$env{'user.domain'};
+    $name=$env{'user.name'};
+    if ($name eq 'public' && $domain eq 'public') {
+	if (!defined($env{'form.username'})) {
+	    $env{'form.username'}.=time.rand(10000000);
+	}
+	$name.=$env{'form.username'};
+    }
+    return ($symb,$courseid,$domain,$name,$publicuser);
+
+}
+
 # ------------------------------------------------------------ Serves up a file
 # returns either the contents of the file or 
 # -1 if the file doesn't exist
@@ -5831,61 +7433,60 @@ sub repcopy_userfile {
     if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
     if ($file =~ m|^/home/httpd/html/lonUsers/|) { return 'ok'; }
     my ($cdom,$cnum,$filename) = 
-	($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+([^/]+)/+([^/]+)/+(.*)|);
-    my ($info,$rtncode);
+	($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
     my $uri="/uploaded/$cdom/$cnum/$filename";
     if (-e "$file") {
+# we already have a local copy, check it out
 	my @fileinfo = stat($file);
+	my $rtncode;
+	my $info;
 	my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
 	if ($lwpresp ne 'ok') {
+# there is no such file anymore, even though we had a local copy
 	    if ($rtncode eq '404') {
 		unlink($file);
 	    }
-	    #my $ua=new LWP::UserAgent;
-	    #my $request=new HTTP::Request('GET',&tokenwrapper($uri));
-	    #my $response=$ua->request($request);
-	    #if ($response->is_success()) {
-	#	return $response->content;
-	#    } else {
-	#	return -1;
-	#    }
 	    return -1;
 	}
 	if ($info < $fileinfo[9]) {
+# nice, the file we have is up-to-date, just say okay
 	    return 'ok';
+	} else {
+# the file is outdated, get rid of it
+	    unlink($file);
 	}
-	$info = '';
-	$lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
-	if ($lwpresp ne 'ok') {
-	    return -1;
-	}
-    } else {
-	my $lwpresp = &getuploaded('GET',$uri,$cdom,$cnum,\$info,\$rtncode);
-	if ($lwpresp ne 'ok') {
-	    my $ua=new LWP::UserAgent;
-	    my $request=new HTTP::Request('GET',&tokenwrapper($uri));
-	    my $response=$ua->request($request);
-	    if ($response->is_success()) {
-		$info=$response->content;
-	    } else {
-		return -1;
-	    }
-	}
-	my @parts = ($cdom,$cnum); 
-	if ($filename =~ m|^(.+)/[^/]+$|) {
-	    push @parts, split(/\//,$1);
-	}
-	my $path = $perlvar{'lonDocRoot'}.'/userfiles';
-	foreach my $part (@parts) {
-	    $path .= '/'.$part;
-	    if (!-e $path) {
-		mkdir($path,0770);
-	    }
+    }
+# one way or the other, at this point, we don't have the file
+# construct the correct path for the file
+    my @parts = ($cdom,$cnum); 
+    if ($filename =~ m|^(.+)/[^/]+$|) {
+	push @parts, split(/\//,$1);
+    }
+    my $path = $perlvar{'lonDocRoot'}.'/userfiles';
+    foreach my $part (@parts) {
+	$path .= '/'.$part;
+	if (!-e $path) {
+	    mkdir($path,0770);
 	}
     }
-    open(FILE,">$file");
-    print FILE $info;
-    close(FILE);
+# now the path exists for sure
+# get a user agent
+    my $ua=new LWP::UserAgent;
+    my $transferfile=$file.'.in.transfer';
+# FIXME: this should flock
+    if (-e $transferfile) { return 'ok'; }
+    my $request;
+    $uri=~s/^\///;
+    $request=new HTTP::Request('GET','http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri);
+    my $response=$ua->request($request,$transferfile);
+# did it work?
+    if ($response->is_error()) {
+	unlink($transferfile);
+	&logthis("Userfile repcopy failed for $uri");
+	return -1;
+    }
+# worked, rename the transfer file
+    rename($transferfile,$file);
     return 'ok';
 }
 
@@ -5899,7 +7500,7 @@ sub tokenwrapper {
     if ($udom && $uname && $file) {
 	$file=~s|(\?\.*)*$||;
         &appenv("userfile.$udom/$uname/$file" => $env{'request.course.id'});
-        return 'http://'.$hostname{ &homeserver($uname,$udom)}.'/'.$uri.
+        return 'http://'.&hostname(&homeserver($uname,$udom)).'/'.$uri.
                (($uri=~/\?/)?'&':'?').'token='.$token.
                                '&tokenissued='.$perlvar{'lonHostID'};
     } else {
@@ -5907,10 +7508,14 @@ sub tokenwrapper {
     }
 }
 
+# call with reqtype HEAD: get last modification time
+# call with reqtype GET: get the file contents
+# Do not call this with reqtype GET for large files! It loads everything into memory
+#
 sub getuploaded {
     my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
     $uri=~s/^\///;
-    $uri = 'http://'.$hostname{ &homeserver($cnum,$cdom)}.'/raw/'.$uri;
+    $uri = 'http://'.&hostname(&homeserver($cnum,$cdom)).'/raw/'.$uri;
     my $ua=new LWP::UserAgent;
     my $request=new HTTP::Request($reqtype,$uri);
     my $response=$ua->request($request);
@@ -5932,7 +7537,7 @@ sub readfile {
     my $fh;
     open($fh,"<$file");
     my $a='';
-    while (<$fh>) { $a .=$_; }
+    while (my $line = <$fh>) { $a .= $line; }
     return $a;
 }
 
@@ -5940,26 +7545,34 @@ sub filelocation {
     my ($dir,$file) = @_;
     my $location;
     $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
+
+    if ($file =~ m-^/adm/-) {
+	$file=~s-^/adm/wrapper/-/-;
+	$file=~s-^/adm/coursedocs/showdoc/-/-;
+    }
+
     if ($file=~m:^/~:) { # is a contruction space reference
         $location = $file;
         $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
-    } elsif ($file=~m:^/home/[^/]*/public_html/:) {
+    } elsif ($file=~m{^/home/$match_username/public_html/}) {
 	# is a correct contruction space reference
         $location = $file;
     } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
         my ($udom,$uname,$filename)=
-  	    ($file=~m -^/+(?:uploaded|editupload)/+([^/]+)/+([^/]+)/+(.*)$-);
+  	    ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
         my $home=&homeserver($uname,$udom);
         my $is_me=0;
         my @ids=&current_machine_ids();
         foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
         if ($is_me) {
-  	    $location=&Apache::loncommon::propath($udom,$uname).
+  	    $location=&propath($udom,$uname).
   	      '/userfiles/'.$filename;
         } else {
   	  $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
   	      $udom.'/'.$uname.'/'.$filename;
         }
+    } elsif ($file =~ m-^/adm/-) {
+	$location = $perlvar{'lonDocRoot'}.'/'.$file;
     } else {
         $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
         $file=~s:^/res/:/:;
@@ -5979,40 +7592,74 @@ sub hreflocation {
     my ($dir,$file)=@_;
     unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
 	$file=filelocation($dir,$file);
+    } elsif ($file=~m-^/adm/-) {
+	$file=~s-^/adm/wrapper/-/-;
+	$file=~s-^/adm/coursedocs/showdoc/-/-;
     }
     if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
 	$file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
-    } elsif ($file=~m-/home/(\w+)/public_html/-) {
-	$file=~s-^/home/(\w+)/public_html/-/~$1/-;
+    } elsif ($file=~m-/home/($match_username)/public_html/-) {
+	$file=~s-^/home/($match_username)/public_html/-/~$1/-;
     } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
-	$file=~s-^/home/httpd/lonUsers/([^/]*)/./././([^/]*)/userfiles/
+	$file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
 	    -/uploaded/$1/$2/-x;
     }
     return $file;
 }
 
 sub current_machine_domains {
-    my $hostname=$hostname{$perlvar{'lonHostID'}};
+    return &machine_domains(&hostname($perlvar{'lonHostID'}));
+}
+
+sub machine_domains {
+    my ($hostname) = @_;
     my @domains;
+    my %hostname = &all_hostnames();
     while( my($id, $name) = each(%hostname)) {
 #	&logthis("-$id-$name-$hostname-");
 	if ($hostname eq $name) {
-	    push(@domains,$hostdom{$id});
+	    push(@domains,&host_domain($id));
 	}
     }
     return @domains;
 }
 
 sub current_machine_ids {
-    my $hostname=$hostname{$perlvar{'lonHostID'}};
+    return &machine_ids(&hostname($perlvar{'lonHostID'}));
+}
+
+sub machine_ids {
+    my ($hostname) = @_;
+    $hostname ||= &hostname($perlvar{'lonHostID'});
     my @ids;
-    while( my($id, $name) = each(%hostname)) {
-#	&logthis("-$id-$name-$hostname-");
-	if ($hostname eq $name) {
-	    push(@ids,$id);
-	}
+    my %name_to_host = &all_names();
+    if (ref($name_to_host{$hostname}) eq 'ARRAY') {
+	return @{ $name_to_host{$hostname} };
     }
-    return @ids;
+    return;
+}
+
+sub additional_machine_domains {
+    my @domains;
+    open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
+    while( my $line = <$fh>) {
+        $line =~ s/\s//g;
+        push(@domains,$line);
+    }
+    return @domains;
+}
+
+sub default_login_domain {
+    my $domain = $perlvar{'lonDefDomain'};
+    my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
+    foreach my $posdom (&current_machine_domains(),
+                        &additional_machine_domains()) {
+        if (lc($posdom) eq lc($testdomain)) {
+            $domain=$posdom;
+            last;
+        }
+    }
+    return $domain;
 }
 
 # ------------------------------------------------------------- Declutters URLs
@@ -6022,6 +7669,8 @@ sub declutter {
     if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
     $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
     $thisfn=~s/^\///;
+    $thisfn=~s|^adm/wrapper/||;
+    $thisfn=~s|^adm/coursedocs/showdoc/||;
     $thisfn=~s/^res\///;
     $thisfn=~s/\?.+$//;
     return $thisfn;
@@ -6031,12 +7680,46 @@ sub declutter {
 
 sub clutter {
     my $thisfn='/'.&declutter(shift);
-    unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) { 
+    if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
+	|| $thisfn =~ m{^/adm/(includes|pages)} ) { 
        $thisfn='/res'.$thisfn; 
     }
+    if ($thisfn !~m|/adm|) {
+	if ($thisfn =~ m|/ext/|) {
+	    $thisfn='/adm/wrapper'.$thisfn;
+	} else {
+	    my ($ext) = ($thisfn =~ /\.(\w+)$/);
+	    my $embstyle=&Apache::loncommon::fileembstyle($ext);
+	    if ($embstyle eq 'ssi'
+		|| ($embstyle eq 'hdn')
+		|| ($embstyle eq 'rat')
+		|| ($embstyle eq 'prv')
+		|| ($embstyle eq 'ign')) {
+		#do nothing with these
+	    } elsif (($embstyle eq 'img') 
+		|| ($embstyle eq 'emb')
+		|| ($embstyle eq 'wrp')) {
+		$thisfn='/adm/wrapper'.$thisfn;
+	    } elsif ($embstyle eq 'unk'
+		     && $thisfn!~/\.(sequence|page)$/) {
+		$thisfn='/adm/coursedocs/showdoc'.$thisfn;
+	    } else {
+#		&logthis("Got a blank emb style");
+	    }
+	}
+    }
     return $thisfn;
 }
 
+sub clutter_with_no_wrapper {
+    my $uri = &clutter(shift);
+    if ($uri =~ m-^/adm/-) {
+	$uri =~ s-^/adm/wrapper/-/-;
+	$uri =~ s-^/adm/coursedocs/showdoc/-/-;
+    }
+    return $uri;
+}
+
 sub freeze_escape {
     my ($value)=@_;
     if (ref($value)) {
@@ -6046,21 +7729,6 @@ sub freeze_escape {
     return &escape($value);
 }
 
-# -------------------------------------------------------- Escape Special Chars
-
-sub escape {
-    my $str=shift;
-    $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
-    return $str;
-}
-
-# ----------------------------------------------------- Un-Escape Special Chars
-
-sub unescape {
-    my $str=shift;
-    $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
-    return $str;
-}
 
 sub thaw_unescape {
     my ($value)=@_;
@@ -6082,125 +7750,331 @@ sub correct_line_ends {
 sub goodbye {
    &logthis("Starting Shut down");
 #not converted to using infrastruture and probably shouldn't be
-   &logthis(sprintf("%-20s is %s",'%badServerCache',length(&freeze(\%badServerCache))));
+   &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
 #converted
 #   &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
-   &logthis(sprintf("%-20s is %s",'%homecache',length(&freeze(\%homecache))));
-#   &logthis(sprintf("%-20s is %s",'%titlecache',length(&freeze(\%titlecache))));
-#   &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&freeze(\%courseresdatacache))));
+   &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
+#   &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
+#   &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
 #1.1 only
-#   &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&freeze(\%userresdatacache))));
-#   &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&freeze(\%getsectioncache))));
-#   &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&freeze(\%courseresversioncache))));
-#   &logthis(sprintf("%-20s is %s",'%resversioncache',length(&freeze(\%resversioncache))));
-   &logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
+#   &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
+#   &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
+#   &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
+#   &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
+   &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
    &logthis(sprintf("%-20s is %s",'kicks',$kicks));
    &logthis(sprintf("%-20s is %s",'hits',$hits));
    &flushcourselogs();
    &logthis("Shutting down");
-   return DONE;
 }
 
-BEGIN {
-# ----------------------------------- Read loncapa.conf and loncapa_apache.conf
-    unless ($readit) {
-{
-    # FIXME: Use LONCAPA::Configuration::read_conf here and omit next block
-    open(my $config,"</etc/httpd/conf/loncapa.conf");
+sub get_dns {
+    my ($url,$func,$ignore_cache) = @_;
+    if (!$ignore_cache) {
+	my ($content,$cached)=
+	    &Apache::lonnet::is_cached_new('dns',$url);
+	if ($cached) {
+	    &$func($content);
+	    return;
+	}
+    }
 
-    while (my $configline=<$config>) {
-        if ($configline=~/\S/ && $configline =~ /^[^\#]*PerlSetVar/) {
-	   my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
-           chomp($varvalue);
-           $perlvar{$varname}=$varvalue;
-        }
+    my %alldns;
+    open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
+    foreach my $dns (<$config>) {
+	next if ($dns !~ /^\^(\S*)/x);
+	$alldns{$1} = 1;
+    }
+    while (%alldns) {
+	my ($dns) = keys(%alldns);
+	delete($alldns{$dns});
+	my $ua=new LWP::UserAgent;
+	my $request=new HTTP::Request('GET',"http://$dns$url");
+	my $response=$ua->request($request);
+	next if ($response->is_error());
+	my @content = split("\n",$response->content);
+	&Apache::lonnet::do_cache_new('dns',$url,\@content,30*24*60*60);
+	&$func(\@content);
+	return;
     }
     close($config);
+    my $which = (split('/',$url))[3];
+    &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
+    open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
+    my @content = <$config>;
+    &$func(\@content);
+    return;
 }
+# ------------------------------------------------------------ Read domain file
 {
-    open(my $config,"</etc/httpd/conf/loncapa_apache.conf");
+    my $loaded;
+    my %domain;
 
-    while (my $configline=<$config>) {
-        if ($configline =~ /^[^\#]*PerlSetVar/) {
-	   my ($dummy,$varname,$varvalue)=split(/\s+/,$configline);
-           chomp($varvalue);
-           $perlvar{$varname}=$varvalue;
-        }
+    sub parse_domain_tab {
+	my ($lines) = @_;
+	foreach my $line (@$lines) {
+	    next if ($line =~ /^(\#|\s*$ )/x);
+
+	    chomp($line);
+	    my ($name,@elements) = split(/:/,$line,9);
+	    my %this_domain;
+	    foreach my $field ('description', 'auth_def', 'auth_arg_def',
+			       'lang_def', 'city', 'longi', 'lati',
+			       'primary') {
+		$this_domain{$field} = shift(@elements);
+	    }
+	    $domain{$name} = \%this_domain;
+	}
     }
-    close($config);
-}
 
-# ------------------------------------------------------------ Read domain file
-{
-    %domaindescription = ();
-    %domain_auth_def = ();
-    %domain_auth_arg_def = ();
-    my $fh;
-    if (open($fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/domain.tab')) {
-       while (<$fh>) {
-           next if (/^(\#|\s*$)/);
-#           next if /^\#/;
-           chomp;
-           my ($domain, $domain_description, $def_auth, $def_auth_arg,
-	       $def_lang, $city, $longi, $lati) = split(/:/,$_);
-	   $domain_auth_def{$domain}=$def_auth;
-           $domain_auth_arg_def{$domain}=$def_auth_arg;
-	   $domaindescription{$domain}=$domain_description;
-	   $domain_lang_def{$domain}=$def_lang;
-	   $domain_city{$domain}=$city;
-	   $domain_longi{$domain}=$longi;
-	   $domain_lati{$domain}=$lati;
+    sub reset_domain_info {
+	undef($loaded);
+	undef(%domain);
+    }
+
+    sub load_domain_tab {
+	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>;
+	    &parse_domain_tab(\@lines);
+	}
+	close($fh);
+	$loaded = 1;
+    }
+
+    sub domain {
+	&load_domain_tab() if (!$loaded);
+
+	my ($name,$what) = @_;
+	return if ( !exists($domain{$name}) );
 
- #         &logthis("Domain.tab: $domain, $domain_auth_def{$domain}, $domain_auth_arg_def{$domain},$domaindescription{$domain}");
-#          &logthis("Domain.tab: $domain ".$domaindescription{$domain} );
+	if (!$what) {
+	    return $domain{$name}{'description'};
 	}
+	return $domain{$name}{$what};
     }
-    close ($fh);
 }
 
 
 # ------------------------------------------------------------- Read hosts file
 {
-    open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
+    my %hostname;
+    my %hostdom;
+    my %libserv;
+    my $loaded;
+    my %name_to_host;
+
+    sub parse_hosts_tab {
+	my ($file) = @_;
+	foreach my $configline (@$file) {
+	    next if ($configline =~ /^(\#|\s*$ )/x);
+	    next if ($configline =~ /^\^/);
+	    chomp($configline);
+	    my ($id,$domain,$role,$name)=split(/:/,$configline);
+	    $name=~s/\s//g;
+	    if ($id && $domain && $role && $name) {
+		$hostname{$id}=$name;
+		push(@{$name_to_host{$name}}, $id);
+		$hostdom{$id}=$domain;
+		if ($role eq 'library') { $libserv{$id}=$name; }
+	    }
+	}
+    }
+    
+    sub reset_hosts_info {
+	&reset_domain_info();
+	&reset_hosts_ip_info();
+	undef(%name_to_host);
+	undef(%hostname);
+	undef(%hostdom);
+	undef(%libserv);
+	undef($loaded);
+    }
 
-    while (my $configline=<$config>) {
-       next if ($configline =~ /^(\#|\s*$)/);
-       chomp($configline);
-       my ($id,$domain,$role,$name)=split(/:/,$configline);
-       $name=~s/\s//g;
-       if ($id && $domain && $role && $name) {
-	 $hostname{$id}=$name;
-	 $hostdom{$id}=$domain;
-	 if ($role eq 'library') { $libserv{$id}=$name; }
-       }
+    sub load_hosts_tab {
+	my ($ignore_cache) = @_;
+	&get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache);
+	open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
+	my @config = <$config>;
+	&parse_hosts_tab(\@config);
+	close($config);
+	$loaded=1;
+    }
+
+    sub hostname {
+	&load_hosts_tab() if (!$loaded);
+
+	my ($lonid) = @_;
+	return $hostname{$lonid};
+    }
+
+    sub all_hostnames {
+	&load_hosts_tab() if (!$loaded);
+
+	return %hostname;
+    }
+
+    sub all_names {
+	&load_hosts_tab() if (!$loaded);
+
+	return %name_to_host;
+    }
+
+    sub is_library {
+	&load_hosts_tab() if (!$loaded);
+
+	return exists($libserv{$_[0]});
+    }
+
+    sub all_library {
+	&load_hosts_tab() if (!$loaded);
+
+	return %libserv;
+    }
+
+    sub get_servers {
+	&load_hosts_tab() if (!$loaded);
+
+	my ($domain,$type) = @_;
+	my %possible_hosts = ($type eq 'library') ? %libserv
+	                                          : %hostname;
+	my %result;
+	if (ref($domain) eq 'ARRAY') {
+	    while ( my ($host,$hostname) = each(%possible_hosts)) {
+		if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
+		    $result{$host} = $hostname;
+		}
+	    }
+	} else {
+	    while ( my ($host,$hostname) = each(%possible_hosts)) {
+		if ($hostdom{$host} eq $domain) {
+		    $result{$host} = $hostname;
+		}
+	    }
+	}
+	return %result;
+    }
+
+    sub host_domain {
+	&load_hosts_tab() if (!$loaded);
+
+	my ($lonid) = @_;
+	return $hostdom{$lonid};
+    }
+
+    sub all_domains {
+	&load_hosts_tab() if (!$loaded);
+
+	my %seen;
+	my @uniq = grep(!$seen{$_}++, values(%hostdom));
+	return @uniq;
     }
-    close($config);
-    # FIXME: dev server don't want this, production servers _do_ want this
-    #&get_iphost();
 }
 
-sub get_iphost {
-    if (%iphost) { return %iphost; }
+{ 
+    my %iphost;
     my %name_to_ip;
-    foreach my $id (keys(%hostname)) {
-	my $name=$hostname{$id};
-	my $ip;
-	if (!exists($name_to_ip{$name})) {
-	    $ip = gethostbyname($name);
-	    if (!$ip || length($ip) ne 4) {
-		&logthis("Skipping host $id name $name no IP found\n");
-		next;
+    my %lonid_to_ip;
+
+    sub get_hosts_from_ip {
+	my ($ip) = @_;
+	my %iphosts = &get_iphost();
+	if (ref($iphosts{$ip})) {
+	    return @{$iphosts{$ip}};
+	}
+	return;
+    }
+    
+    sub reset_hosts_ip_info {
+	undef(%iphost);
+	undef(%name_to_ip);
+	undef(%lonid_to_ip);
+    }
+
+    sub get_host_ip {
+	my ($lonid) = @_;
+	if (exists($lonid_to_ip{$lonid})) {
+	    return $lonid_to_ip{$lonid};
+	}
+	my $name=&hostname($lonid);
+   	my $ip = gethostbyname($name);
+	return if (!$ip || length($ip) ne 4);
+	$ip=inet_ntoa($ip);
+	$name_to_ip{$name}   = $ip;
+	$lonid_to_ip{$lonid} = $ip;
+	return $ip;
+    }
+    
+    sub get_iphost {
+	my ($ignore_cache) = @_;
+
+	if (!$ignore_cache) {
+	    if (%iphost) {
+		return %iphost;
 	    }
-	    $ip=inet_ntoa($ip);
-	    $name_to_ip{$name} = $ip;
-	} else {
-	    $ip = $name_to_ip{$name};
+	    my ($ip_info,$cached)=
+		&Apache::lonnet::is_cached_new('iphost','iphost');
+	    if ($cached) {
+		%iphost      = %{$ip_info->[0]};
+		%name_to_ip  = %{$ip_info->[1]};
+		%lonid_to_ip = %{$ip_info->[2]};
+		return %iphost;
+	    }
+	}
+
+	# get yesterday's info for fallback
+	my %old_name_to_ip;
+	my ($ip_info,$cached)=
+	    &Apache::lonnet::is_cached_new('iphost','iphost');
+	if ($cached) {
+	    %old_name_to_ip = %{$ip_info->[1]};
+	}
+
+	my %name_to_host = &all_names();
+	foreach my $name (keys(%name_to_host)) {
+	    my $ip;
+	    if (!exists($name_to_ip{$name})) {
+		$ip = gethostbyname($name);
+		if (!$ip || length($ip) ne 4) {
+		    if (defined($old_name_to_ip{$name})) {
+			$ip = $old_name_to_ip{$name};
+			&logthis("Can't find $name defaulting to old $ip");
+		    } else {
+			&logthis("Name $name no IP found");
+			next;
+		    }
+		} else {
+		    $ip=inet_ntoa($ip);
+		}
+		$name_to_ip{$name} = $ip;
+	    } else {
+		$ip = $name_to_ip{$name};
+	    }
+	    foreach my $id (@{ $name_to_host{$name} }) {
+		$lonid_to_ip{$id} = $ip;
+	    }
+	    push(@{$iphost{$ip}},@{$name_to_host{$name}});
 	}
-	push(@{$iphost{$ip}},$id);
+	&Apache::lonnet::do_cache_new('iphost','iphost',
+				      [\%iphost,\%name_to_ip,\%lonid_to_ip],
+				      48*60*60);
+
+	return %iphost;
     }
-    return %iphost;
 }
 
+BEGIN {
+
+# ----------------------------------- Read loncapa.conf and loncapa_apache.conf
+    unless ($readit) {
+{
+    my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
+    %perlvar = (%perlvar,%{$configvars});
+}
+
+
 # ------------------------------------------------------ Read spare server file
 {
     open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
@@ -6208,7 +8082,9 @@ sub get_iphost {
     while (my $configline=<$config>) {
        chomp($configline);
        if ($configline) {
-          $spareid{$configline}=1;
+	   my ($host,$type) = split(':',$configline,2);
+	   if (!defined($type) || $type eq '') { $type = 'default' };
+	   push(@{ $spareid{$type} }, $host);
        }
     }
     close($config);
@@ -6234,8 +8110,14 @@ sub get_iphost {
     while (my $configline=<$config>) {
 	chomp($configline);
 	if ($configline) {
-	    my ($short,$plain)=split(/:/,$configline);
-	    if ($plain ne '') { $prp{$short}=$plain; }
+	    my ($short,@plain)=split(/:/,$configline);
+            %{$prp{$short}} = ();
+	    if (@plain > 0) {
+                $prp{$short}{'std'} = $plain[0];
+                for (my $i=1; $i<@plain; $i++) {
+                    $prp{$short}{'alt'.$i} = $plain[$i];  
+                }
+            }
 	}
     }
     close($config);
@@ -6264,7 +8146,9 @@ sub get_iphost {
 
 }
 
-$memcache=new Cache::Memcached({'servers'=>['127.0.0.1:11211']});
+$memcache=new Cache::Memcached({'servers'           => ['127.0.0.1:11211'],
+				'compress_threshold'=> 20_000,
+ 			        });
 
 $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
 $dumpcount=0;
@@ -6461,6 +8345,13 @@ B<delenv($regexp)>: removes all items fr
 environment file that matches the regular expression in $regexp. The
 values are also delted from the current processes %env.
 
+=item * get_env_multiple($name) 
+
+gets $name from the %env hash, it seemlessly handles the cases where multiple
+values may be defined and end up as an array ref.
+
+returns an array of values
+
 =back
 
 =head2 User Information
@@ -6515,6 +8406,16 @@ X<userenvironment()>
 B<userenvironment($udom,$uname,@what)>: gets the values of the keys
 passed in @what from the requested user's environment, returns a hash
 
+=item * 
+X<userlog_query()>
+B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
+activity.log file. %filters defines filters applied when parsing the
+log file. These can be start or end timestamps, or the type of action
+- log to look for Login or Logout events, check for Checkin or
+Checkout, role for role selection. The response is in the form
+timestamp1:hostid1:event1&timestamp2:hostid2:event2 where events are
+escaped strings of the action recorded in the activity.log file.
+
 =back
 
 =head2 User Roles
@@ -6523,13 +8424,13 @@ passed in @what from the requested user'
 
 =item *
 
-allowed($priv,$uri) : check for a user privilege; returns codes for allowed
-actions
+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
 
 =item *
 
@@ -6542,6 +8443,21 @@ and course level
 plaintext($short) : return value in %prp hash (rolesplain.tab); plain text
 explanation of a user role term
 
+=item *
+
+get_my_roles($uname,$udom,$context,$types,$roles,$roledoms) :
+All arguments are optional. Returns a hash of a roles, either for
+co-author/assistant author roles for a user's Construction Space
+(default), or if $context is 'user', roles for the user himself,
+In the hash, keys are set to colon-sparated $uname,$udom,and $role,
+and value is set to colon-separated start and end times for the role.
+If no username and domain are specified, will default to current
+user/domain. Types, roles, and roledoms are references to arrays,
+of role statuses (active, future or previous), roles 
+(e.g., cc,in, st etc.) and domains of the roles which can be used
+to restrict the list of roles reported. If no array ref is 
+provided for types, will default to return only active roles.
+
 =back
 
 =head2 User Modification
@@ -6684,6 +8600,14 @@ setting for a specific $type, where $typ
 @what should be a list of parameters to ask about. This routine caches
 answers for 5 minutes.
 
+=item *
+
+get_courseresdata($courseid, $domain) : dump the entire course resource
+data base, returning a hash that is keyed by the resource name and has
+values that are the resource value.  I believe that the timestamps and
+versions are also returned.
+
+
 =back
 
 =head2 Course Modification
@@ -6850,6 +8774,27 @@ all args are optional
 
 =item *
 
+dumpstore($namespace,$udom,$uname,$regexp,$range) : 
+dumps the complete (or key matching regexp) namespace into a hash
+($udom, $uname, $regexp, $range are optional) for a namespace that is
+normally &store()ed into
+
+$range should be either an integer '100' (give me the first 100
+                                           matching records)
+              or be  two integers sperated by a - with no spaces
+                 '30-50' (give me the 30th through the 50th matching
+                          records)
+
+
+=item *
+
+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 $storehash hash 
+reference
+
+=item *
+
 tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
 works very similar to store/cstore, but all data is stored in a
 temporary location and can be reset using tmpreset, $storehash should
@@ -6879,10 +8824,15 @@ namesp ($udom and $uname are optional)
 
 =item *
 
-dump($namespace,$udom,$uname,$regexp) : 
+dump($namespace,$udom,$uname,$regexp,$range) : 
 dumps the complete (or key matching regexp) namespace into a hash
-($udom, $uname and $regexp are optional)
+($udom, $uname, $regexp, $range are optional)
 
+$range should be either an integer '100' (give me the first 100
+                                           matching records)
+              or be  two integers sperated by a - with no spaces
+                 '30-50' (give me the 30th through the 50th matching
+                          records)
 =item *
 
 inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
@@ -6898,19 +8848,33 @@ put($namespace,$storehash,$udom,$uname)
 
 =item *
 
-putstore($namespace,$storehash,$udomain,$uname) : stores hash in namesp
-keys used in storehash include version information (e.g., 1:$symb:message etc.) as
-used in records written by &store and retrieved by &restore.  This function 
-was created for use in editing discussion posts, without incrementing the
-version number included in the key for a particular post. The colon 
-separated list of attribute names (e.g., the value associated with the key 
-1:keys:$symb) is also generated and passed in the ampersand separated 
-items sent to lonnet::reply().  
+cput($namespace,$storehash,$udom,$uname) : critical put
+($udom and $uname are optional)
 
 =item *
 
-cput($namespace,$storehash,$udom,$uname) : critical put
-($udom and $uname are optional)
+newput($namespace,$storehash,$udom,$uname) :
+
+Attempts to store the items in the $storehash, but only if they don't
+currently exist, if this succeeds you can be certain that you have 
+successfully created a new key value pair in the $namespace db.
+
+
+Args:
+ $namespace: name of database to store values to
+ $storehash: hashref to store to the db
+ $udom: (optional) domain of user containing the db
+ $uname: (optional) name of user caontaining the db
+
+Returns:
+ 'ok' -> succeeded in storing all keys of $storehash
+ 'key_exists: <key>' -> failed to anything out of $storehash, as at
+                        least <key> already existed in the db (other
+                        requested keys may also already exist)
+ 'error: <msg>' -> unable to tie the DB or other erorr occured
+ 'con_lost' -> unable to contact request server
+ 'refused' -> action was not allowed by remote machine
+
 
 =item *
 
@@ -6923,6 +8887,18 @@ reference filled in from namesp (encrypt
 log($udom,$name,$home,$message) : write to permanent log for user; use
 critical subroutine
 
+=item *
+
+get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
+array reference filled in from namespace found in domain level on either
+specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
+
+=item *
+
+put_dom($namespace,$storehash,$udom,$uhome) :  stores hash in namespace at 
+domain level either on specified domain server ($uhome) or primary domain 
+server ($udom and $uhome are optional)
+
 =back
 
 =head2 Network Status Functions
@@ -7038,6 +9014,16 @@ getfile($file,$caller) : two cases - req
    - returns the entire contents of a file or -1; 
    it properly subscribes to and replicates the file if neccessary.
 
+
+=item *
+
+stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
+                  reference
+
+returns either a stat() list of data about the file or an empty list
+if the file doesn't exist or couldn't find out about it (connection
+problems or user unknown)
+
 =item *
 
 filelocation($dir,$file) : returns file system location of a file
@@ -7138,6 +9124,94 @@ removeuploadedurl(): convience function
   Args:
    url:  a full /uploaded/... url to delete
 
+=item * 
+
+get_portfile_permissions():
+  Args:
+    domain: domain of user or course contain the portfolio files
+    user: name of user or num of course contain the portfolio files
+  Returns:
+    hashref of a dump of the proper file_permissions.db
+   
+
+=item * 
+
+get_access_controls():
+
+Args:
+  current_permissions: the hash ref returned from get_portfile_permissions()
+  group: (optional) the group you want the files associated with
+  file: (optional) the file you want access info on
+
+Returns:
+    a hash (keys are file names) of hashes containing
+        keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
+        values are XML containing access control settings (see below) 
+
+Internal notes:
+
+ access controls are stored in file_permissions.db as key=value pairs.
+    key -> path to file/file_name\0uniqueID:scope_end_start
+        where scope -> public,guest,course,group,domains or users.
+              end -> UNIX time for end of access (0 -> no end date)
+              start -> UNIX time for start of access
+
+    value -> XML description of access control
+           <scope type=""> (type =1 of: public,guest,course,group,domains,users">
+            <start></start>
+            <end></end>
+
+            <password></password>  for scope type = guest
+
+            <domain></domain>     for scope type = course or group
+            <number></number>
+            <roles id="">
+             <role></role>
+             <access></access>
+             <section></section>
+             <group></group>
+            </roles>
+
+            <dom></dom>         for scope type = domains
+
+            <users>             for scope type = users
+             <user>
+              <uname></uname>
+              <udom></udom>
+             </user>
+            </users>
+           </scope> 
+              
+ Access data is also aggregated for each file in an additional key=value pair:
+ key -> path to file/file_name\0accesscontrol 
+ value -> reference to hash
+          hash contains key = value pairs
+          where key = uniqueID:scope_end_start
+                value = UNIX time record was last updated
+
+          Used to improve speed of look-ups of access controls for each file.  
+ 
+ Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
+
+modify_access_controls():
+
+Modifies access controls for a portfolio file
+Args
+1. file name
+2. reference to hash of required changes,
+3. domain
+4. username
+  where domain,username are the domain of the portfolio owner 
+  (either a user or a course) 
+
+Returns:
+1. result of additions or updates ('ok' or 'error', with error message). 
+2. result of deletions ('ok' or 'error', with error message).
+3. reference to hash of any new or updated access controls.
+4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
+   key = integer (inbound ID)
+   value = uniqueID  
+
 =back
 
 =head2 HTTP Helper Routines
@@ -7216,3 +9290,4 @@ symblist($mapname,%newhash) : update sym
 =back
 
 =cut
+