--- loncom/lonnet/perl/lonnet.pm	2007/04/03 18:16:57	1.859
+++ loncom/lonnet/perl/lonnet.pm	2008/02/21 10:04:35	1.942
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.859 2007/04/03 18:16:57 albertel Exp $
+# $Id: lonnet.pm,v 1.942 2008/02/21 10:04:35 foxr Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -31,22 +31,21 @@ package Apache::lonnet;
 
 use strict;
 use LWP::UserAgent();
-use HTTP::Headers;
 use HTTP::Date;
 # use Date::Parse;
-use vars 
-qw(%perlvar %badServerCache %spareid 
-   %pr %prp $memcache %packagetab 
-   %courselogs %accesshash %userrolehash %domainrolehash $processmarker $dumpcount 
-   %coursedombuf %coursenumbuf %coursehombuf %coursedescrbuf %courseinstcodebuf %courseownerbuf %coursetypebuf
-   $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 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;
@@ -150,7 +149,7 @@ sub create_connection {
 				     Type    => SOCK_STREAM,
 				     Timeout => 10);
     return 0 if (!$client);
-    print $client (join(':',$hostname,$lonid,&machine_ids($lonid))."\n");
+    print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
     my $result = <$client>;
     chomp($result);
     return 1 if ($result eq 'done');
@@ -182,7 +181,7 @@ 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);
@@ -215,6 +214,24 @@ sub reply {
 # ----------------------------------------------------------- Send USR1 to lonc
 
 sub reconlonc {
+    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")) {
@@ -303,7 +320,10 @@ sub convert_and_load_session_env {
     my ($lonidsdir,$handle)=@_;
     my @profile;
     {
-	open(my $idf,"$lonidsdir/$handle.id");
+	my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
+	if (!$opened) {
+	    return 0;
+	}
 	flock($idf,LOCK_SH);
 	@profile=<$idf>;
 	close($idf);
@@ -342,7 +362,10 @@ sub transfer_profile_to_env {
 
     my $convert;
     {
-    	open(my $idf,"$lonidsdir/$handle.id");
+    	my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
+	if (!$opened) {
+	    return;
+	}
 	flock($idf,LOCK_SH);
 	if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
 		&GDBM_READER(),0640)) {
@@ -374,6 +397,34 @@ sub transfer_profile_to_env {
     }
 }
 
+# ---------------------------------------------------- Check for valid session 
+sub check_for_valid_session {
+    my ($r) = @_;
+    my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
+    my $lonid=$cookies{'lonID'};
+    return undef if (!$lonid);
+
+    my $handle=&LONCAPA::clean_handle($lonid->value);
+    my $lonidsdir=$r->dir_config('lonIDsDir');
+    return undef if (!-e "$lonidsdir/$handle.id");
+
+    my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
+    return undef if (!$opened);
+
+    flock($idf,LOCK_SH);
+    my %disk_env;
+    if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
+	    &GDBM_READER(),0640)) {
+	return undef;	
+    }
+
+    if (!defined($disk_env{'user.name'})
+	|| !defined($disk_env{'user.domain'})) {
+	return undef;
+    }
+    return $handle;
+}
+
 sub timed_flock {
     my ($file,$lock_type) = @_;
     my $failed=0;
@@ -408,8 +459,9 @@ sub appenv {
             $env{$key}=$newenv{$key};
         }
     }
-    open(my $env_file,$env{'user.environment'});
-    if (&timed_flock($env_file,LOCK_EX)
+    my $opened = open(my $env_file,'+<',$env{'user.environment'});
+    if ($opened
+	&& &timed_flock($env_file,LOCK_EX)
 	&&
 	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
 	    (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
@@ -429,16 +481,17 @@ sub delenv {
                 "Attempt to delete from environment ".$delthis);
         return 'error';
     }
-    open(my $env_file,$env{'user.environment'});
-    if (&timed_flock($env_file,LOCK_EX)
+    my $opened = open(my $env_file,'+<',$env{'user.environment'});
+    if ($opened
+	&& &timed_flock($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{$key});
-                delete($disk_env{$key});
-            }
+		delete($env{$key});
+		delete($disk_env{$key});
+	    }
 	}
 	untie(%disk_env);
     }
@@ -460,7 +513,6 @@ sub get_env_multiple {
 }
 
 # ------------------------------------------ Find out current server userload
-# there is a copy in lond
 sub userload {
     my $numusers=0;
     {
@@ -468,7 +520,8 @@ sub userload {
 	my $filename;
 	my $curtime=time;
 	while ($filename=readdir(LONIDS)) {
-	    if ($filename eq '.' || $filename eq '..') {next;}
+	    next if ($filename eq '.' || $filename eq '..');
+	    next if ($filename =~ /publicuser_\d+\.id/);
 	    my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
 	    if ($curtime-$mtime < 1800) { $numusers++; }
 	}
@@ -565,6 +618,27 @@ sub compare_server_load {
     }
     return ($spare_server,$lowest_load);
 }
+
+# --------------------------- ask offload servers if user already has a session
+sub find_existing_session {
+    my ($udom,$uname) = @_;
+    foreach my $try_server (@{ $spareid{'primary'} },
+			    @{ $spareid{'default'} }) {
+	return $try_server if (&has_user_session($try_server, $udom, $uname));
+    }
+    return;
+}
+
+# -------------------------------- ask if server already has a session for user
+sub has_user_session {
+    my ($lonid,$udom,$uname) = @_;
+    my $result = &reply(join(':','userhassession',
+			     map {&escape($_)} ($udom,$uname)),$lonid);
+    return 1 if ($result eq 'ok');
+
+    return 0;
+}
+
 # --------------------------------------------- Try to change a user's password
 
 sub changepass {
@@ -734,21 +808,36 @@ sub idput {
 # ------------------------------------------- get items from domain db files   
 
 sub get_dom {
-    my ($namespace,$storearr,$udom)=@_;
+    my ($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'))) {
-        my $uhome=&domain($udom,'primary');
+    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 %returnhash=();
         my $i=0;
         foreach my $item (@$storearr) {
             $returnhash{$item}=&thaw_unescape($pairs[$i]);
@@ -756,17 +845,29 @@ sub get_dom {
         }
         return %returnhash;
     } else {
-        &logthis("get_dom failed - no primary domain server for $udom");
+        &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
     }
 }
 
 # -------------------------------------------- put items in domain db files 
 
 sub put_dom {
-    my ($namespace,$storehash,$udom)=@_;
-    if (!$udom) { $udom=$env{'user.domain'}; }
-    if (defined(&domain($udom,'primary'))) {
-        my $uhome=&domain($udom,'primary');
+    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}).'&';
@@ -774,7 +875,7 @@ sub put_dom {
         $items=~s/\&$//;
         return &reply("putdom:$udom:$namespace:$items",$uhome);
     } else {
-        &logthis("put_dom failed - no primary domain server for $udom");
+        &logthis("put_dom failed - no homeserver and/or domain");
     }
 }
 
@@ -802,6 +903,218 @@ sub retrieve_inst_usertypes {
     return (\%returnhash,\@order);
 }
 
+sub is_domainimage {
+    my ($url) = @_;
+    if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+-) {
+        if (&domain($1) ne '') {
+            return '1';
+        }
+    }
+    return;
+}
+
+sub inst_directory_query {
+    my ($srch) = @_;
+    my $udom = $srch->{'srchdomain'};
+    my %results;
+    my $homeserver = &domain($udom,'primary');
+    my $outcome;
+    if ($homeserver ne '') {
+	my $queryid=&reply("querysend:instdirsearch:".
+			   &escape($srch->{'srchby'}).':'.
+			   &escape($srch->{'srchterm'}).':'.
+			   &escape($srch->{'srchtype'}),$homeserver);
+	my $host=&hostname($homeserver);
+	if ($queryid !~/^\Q$host\E\_/) {
+	    &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
+	    return;
+	}
+	my $response = &get_query_reply($queryid);
+	my $maxtries = 5;
+	my $tries = 1;
+	while (($response=~/^timeout/) && ($tries < $maxtries)) {
+	    $response = &get_query_reply($queryid);
+	    $tries ++;
+	}
+
+        if (!&error($response) && $response ne 'refused') {
+            if ($response eq 'unavailable') {
+                $outcome = $response;
+            } else {
+                $outcome = 'ok';
+                my @matches = split(/\n/,$response);
+                foreach my $match (@matches) {
+                    my ($key,$value) = split(/=/,$match);
+                    $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
+                }
+            }
+        }
+    }
+    return ($outcome,%results);
+}
+
+sub usersearch {
+    my ($srch) = @_;
+    my $dom = $srch->{'srchdomain'};
+    my %results;
+    my %libserv = &all_library();
+    my $query = 'usersearch';
+    foreach my $tryserver (keys(%libserv)) {
+        if (&host_domain($tryserver) eq $dom) {
+            my $host=&hostname($tryserver);
+            my $queryid=
+                &reply("querysend:".&escape($query).':'.
+                       &escape($srch->{'srchby'}).':'.
+                       &escape($srch->{'srchtype'}).':'.
+                       &escape($srch->{'srchterm'}),$tryserver);
+            if ($queryid !~/^\Q$host\E\_/) {
+                &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
+                next;
+            }
+            my $reply = &get_query_reply($queryid);
+            my $maxtries = 1;
+            my $tries = 1;
+            while (($reply=~/^timeout/) && ($tries < $maxtries)) {
+                $reply = &get_query_reply($queryid);
+                $tries ++;
+            }
+            if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
+                &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') -  maxtries: '.$maxtries.' tries: '.$tries);
+            } else {
+                my @matches;
+                if ($reply =~ /\n/) {
+                    @matches = split(/\n/,$reply);
+                } else {
+                    @matches = split(/\&/,$reply);
+                }
+                foreach my $match (@matches) {
+                    my ($uname,$udom,%userhash);
+                    foreach my $entry (split(/:/,$match)) {
+                        my ($key,$value) =
+                            map {&unescape($_);} split(/=/,$entry);
+                        $userhash{$key} = $value;
+                        if ($key eq 'username') {
+                            $uname = $value;
+                        } elsif ($key eq 'domain') {
+                            $udom = $value;
+                        }
+                    }
+                    $results{$uname.':'.$udom} = \%userhash;
+                }
+            }
+        }
+    }
+    return %results;
+}
+
+sub get_instuser {
+    my ($udom,$uname,$id) = @_;
+    my $homeserver = &domain($udom,'primary');
+    my ($outcome,%results);
+    if ($homeserver ne '') {
+        my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
+                           &escape($id).':'.&escape($udom),$homeserver);
+        my $host=&hostname($homeserver);
+        if ($queryid !~/^\Q$host\E\_/) {
+            &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
+            return;
+        }
+        my $response = &get_query_reply($queryid);
+        my $maxtries = 5;
+        my $tries = 1;
+        while (($response=~/^timeout/) && ($tries < $maxtries)) {
+            $response = &get_query_reply($queryid);
+            $tries ++;
+        }
+        if (!&error($response) && $response ne 'refused') {
+            if ($response eq 'unavailable') {
+                $outcome = $response;
+            } else {
+                $outcome = 'ok';
+                my @matches = split(/\n/,$response);
+                foreach my $match (@matches) {
+                    my ($key,$value) = split(/=/,$match);
+                    $results{&unescape($key)} = &thaw_unescape($value);
+                }
+            }
+        }
+    }
+    my %userinfo;
+    if (ref($results{$uname}) eq 'HASH') {
+        %userinfo = %{$results{$uname}};
+    } 
+    return ($outcome,%userinfo);
+}
+
+sub inst_rulecheck {
+    my ($udom,$uname,$id,$item,$rules) = @_;
+    my %returnhash;
+    if ($udom ne '') {
+        if (ref($rules) eq 'ARRAY') {
+            @{$rules} = map {&escape($_);} (@{$rules});
+            my $rulestr = join(':',@{$rules});
+            my $homeserver=&domain($udom,'primary');
+            if (($homeserver ne '') && ($homeserver ne 'no_host')) {
+                my $response;
+                if ($item eq 'username') {                
+                    $response=&unescape(&reply('instrulecheck:'.&escape($udom).
+                                              ':'.&escape($uname).':'.$rulestr,
+                                              $homeserver));
+                } elsif ($item eq 'id') {
+                    $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
+                                              ':'.&escape($id).':'.$rulestr,
+                                              $homeserver));
+                }
+                if ($response ne 'refused') {
+                    my @pairs=split(/\&/,$response);
+                    foreach my $item (@pairs) {
+                        my ($key,$value)=split(/=/,$item,2);
+                        $key = &unescape($key);
+                        next if ($key =~ /^error: 2 /);
+                        $returnhash{$key}=&thaw_unescape($value);
+                    }
+                }
+            }
+        }
+    }
+    return %returnhash;
+}
+
+sub inst_userrules {
+    my ($udom,$check) = @_;
+    my (%ruleshash,@ruleorder);
+    if ($udom ne '') {
+        my $homeserver=&domain($udom,'primary');
+        if (($homeserver ne '') && ($homeserver ne 'no_host')) {
+            my $response;
+            if ($check eq 'id') {
+                $response=&reply('instidrules:'.&escape($udom),
+                                 $homeserver);
+            } else {
+                $response=&reply('instuserrules:'.&escape($udom),
+                                 $homeserver);
+            }
+            if (($response ne 'refused') && ($response ne 'error') && 
+                ($response ne 'unknown_cmd') && 
+                ($response ne 'no_such_host')) {
+                my ($hashitems,$orderitems) = split(/:/,$response);
+                my @pairs=split(/\&/,$hashitems);
+                foreach my $item (@pairs) {
+                    my ($key,$value)=split(/=/,$item,2);
+                    $key = &unescape($key);
+                    next if ($key =~ /^error: 2 /);
+                    $ruleshash{$key}=&thaw_unescape($value);
+                }
+                my @esc_order = split(/\&/,$orderitems);
+                foreach my $item (@esc_order) {
+                    push(@ruleorder,&unescape($item));
+                }
+            }
+        }
+    }
+    return (\%ruleshash,\@ruleorder);
+}
+
 # --------------------------------------------------- Assign a key to a student
 
 sub assign_access_key {
@@ -1028,7 +1341,10 @@ my $kicks=0;
 my $hits=0;
 sub make_key {
     my ($name,$id) = @_;
-    if (length($id) > 200) { $id=length($id).':'.&Digest::MD5::md5_hex($id); }
+    if (length($id) > 65 
+	&& length(&escape($id)) > 200) {
+	$id=length($id).':'.&Digest::MD5::md5_hex($id);
+    }
     return &escape($name.':'.$id);
 }
 
@@ -1075,15 +1391,21 @@ sub do_cache_new {
 	$time=600;
     }
     if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
-    $memcache->set($id,$setvalue,$time);
+    my $result = $memcache->set($id,$setvalue,$time);
+    if (! $result) {
+	&logthis("caching of id -> $id  failed");
+	$memcache->disconnect_all();
+    }
     # need to make a copy of $value
-    #&make_room($id,$value,$debug);
+    &make_room($id,$value,$debug);
     return $value;
 }
 
 sub make_room {
     my ($id,$value,$debug)=@_;
-    $remembered{$id}=$value;
+
+    $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
+                                    : $value;
     if ($to_remember<0) { return; }
     $accessed{$id}=[&gettimeofday()];
     if (scalar(keys(%remembered)) <= $to_remember) { return; }
@@ -1313,7 +1635,7 @@ sub ssi_body {
                                      &ssi($filelink,%form));
     $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
     $output=~s/^.*?\<body[^\>]*\>//si;
-    $output=~s/(.*)\<\/body\s*\>.*?$/$1/si;
+    $output=~s/\<\/body\s*\>.*?$//si;
     return $output;
 }
 
@@ -1328,16 +1650,28 @@ sub absolute_url {
     return $protocol.$host_name;
 }
 
+#
+#   Server side include.
+# Parameters:
+#  fn     Possibly encrypted resource name/id.
+#  form   Hash that describes how the rendering should be done
+#         and other things.
+#  r      Optional reference that will be given the response.
+#         This is mostly provided so that the caller can implement
+#         error detection, recovery and retry policies.
+#     
+# Returns:
+#    The content of the response.
 sub ssi {
 
-    my ($fn,%form)=@_;
+    my ($fn,%form, $r)=@_;
 
     my $ua=new LWP::UserAgent;
     
     my $request;
 
     $form{'no_update_last_known'}=1;
-
+    &Apache::lonenc::check_encrypt(\$fn);
     if (%form) {
       $request=new HTTP::Request('POST',&absolute_url().$fn);
       $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
@@ -1348,6 +1682,10 @@ sub ssi {
     $request->header(Cookie => $ENV{'HTTP_COOKIE'});
     my $response=$ua->request($request);
 
+    if ($r) {
+	$$r = $response;
+    }
+
     return $response->content;
 }
 
@@ -1521,13 +1859,16 @@ sub clean_filename {
 #        $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,$destuname,$destudom)=@_;
+    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);
@@ -1574,7 +1915,7 @@ 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,$docudom,
@@ -1584,8 +1925,9 @@ sub userfileupload {
     } elsif (defined($destuname)) {
         my $docuname=$destuname;
         my $docudom=$destudom;
-	return &finishuserfileupload($docuname,$docudom,$formname,
-				     $fname,$parser,$allfiles,$codebase);
+	return &finishuserfileupload($docuname,$docudom,$formname,$fname,
+				     $parser,$allfiles,$codebase,
+                                     $thumbwidth,$thumbheight);
         
     } else {
         my $docuname=$env{'user.name'};
@@ -1594,16 +1936,18 @@ sub userfileupload {
             $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
             $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
         }
-	return &finishuserfileupload($docuname,$docudom,$formname,
-				     $fname,$parser,$allfiles,$codebase);
+	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|^(.*)/([^/]+)$|);
@@ -1639,12 +1983,28 @@ sub finishuserfileupload {
 		     ' for embedded media: '.$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;
@@ -1676,13 +2036,16 @@ 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');
@@ -1839,7 +2202,7 @@ sub flushcourselogs {
 # times and course titles for all courseids
 #
     my %courseidbuffer=();
-    foreach my $crsid (keys %courselogs) {
+    foreach my $crsid (keys(%courselogs)) {
         if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
 		          &escape($courselogs{$crsid}),
 		          $coursehombuf{$crsid}) eq 'ok') {
@@ -1852,23 +2215,21 @@ sub flushcourselogs {
                delete $courselogs{$crsid};
             }
         }
-        if ($courseidbuffer{$coursehombuf{$crsid}}) {
-           $courseidbuffer{$coursehombuf{$crsid}}.='&'.
-			 &escape($crsid).'='.&escape($coursedescrbuf{$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($coursetypebuf{$crsid});
-        }
+        $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
+            'description' => $coursedescrbuf{$crsid},
+            'inst_code'    => $courseinstcodebuf{$crsid},
+            'type'        => $coursetypebuf{$crsid},
+            'owner'       => $courseownerbuf{$crsid},
+        };
     }
 #
 # Write course id database (reverse lookup) to homeserver of courses 
 # Is used in pickcourse
 #
     foreach my $crs_home (keys(%courseidbuffer)) {
-        &courseidput(&host_domain($crs_home),$courseidbuffer{$crs_home},
-		     $crs_home);
+        my $response = &courseidput(&host_domain($crs_home),
+                                    $courseidbuffer{$crs_home},
+                                    $crs_home,'timeonly');
     }
 #
 # File accesses
@@ -1924,7 +2285,7 @@ sub flushcourselogs {
 #
     my %domrolebuffer = ();
     foreach my $entry (keys %domainrolehash) {
-        my ($role,$uname,$udom,$runame,$rudom,$rsec)=split/:/,$entry;
+        my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
         if ($domrolebuffer{$rudom}) {
             $domrolebuffer{$rudom}.='&'.&escape($entry).
                       '='.&escape($domainrolehash{$entry});
@@ -2029,6 +2390,14 @@ sub userrolelog {
          {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
                     =$tend.':'.$tstart;
     }
+    if (($env{'request.role'} =~ /dc\./) &&
+	(($trole=~/^au/) || ($trole=~/^in/) ||
+	 ($trole=~/^cc/) || ($trole=~/^ep/) ||
+	 ($trole=~/^cr/) || ($trole=~/^ta/))) {
+       $userrolehash
+         {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
+                    =$tend.':'.$tstart;
+    }
     if (($trole=~/^dc/) || ($trole=~/^ad/) ||
         ($trole=~/^li/) || ($trole=~/^li/) ||
         ($trole=~/^au/) || ($trole=~/^dg/) ||
@@ -2046,7 +2415,11 @@ sub get_course_adv_roles {
     my %coursehash=&coursedescription($cid);
     my %nothide=();
     foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
-	$nothide{join(':',split(/[\@\:]/,$user))}=1;
+        if ($user !~ /:/) {
+	    $nothide{join(':',split(/[\@]/,$user))}=1;
+        } else {
+            $nothide{$user}=1;
+        }
     }
     my %returnhash=();
     my %dumphash=
@@ -2074,23 +2447,38 @@ sub get_course_adv_roles {
 }
 
 sub get_my_roles {
-    my ($uname,$udom,$context,$types,$roles,$roledoms)=@_;
+    my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
     unless (defined($uname)) { $uname=$env{'user.name'}; }
     unless (defined($udom)) { $udom=$env{'user.domain'}; }
-    my %dumphash;
+    my (%dumphash,%nothide);
     if ($context eq 'userroles') { 
         %dumphash = &dump('roles',$udom,$uname);
     } else {
         %dumphash=
             &dump('nohist_userroles',$udom,$uname);
+        if ($hidepriv) {
+            my %coursehash=&coursedescription($udom.'_'.$uname);
+            foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
+                if ($user !~ /:/) {
+                    $nothide{join(':',split(/[\@]/,$user))} = 1;
+                } else {
+                    $nothide{$user} = 1;
+                }
+            }
+        }
     }
     my %returnhash=();
     my $now=time;
     foreach my $entry (keys(%dumphash)) {
-	my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
+        my ($role,$tend,$tstart);
+        if ($context eq 'userroles') {
+	    ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
+        } else {
+            ($tend,$tstart)=split(/\:/,$dumphash{$entry});
+        }
         if (($tstart) && ($tstart<0)) { next; }
         my $status = 'active';
-        if (($tend) && ($tend<$now)) {
+        if (($tend) && ($tend<=$now)) {
             $status = 'previous';
         } 
         if (($tstart) && ($now<$tstart)) {
@@ -2105,7 +2493,13 @@ sub get_my_roles {
                 next;
             }
         }
-        my ($role,$username,$domain,$section)=split(/\:/,$entry);
+        my ($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$domain\E$/,@{$roledoms})) {
                 next;
@@ -2113,10 +2507,27 @@ sub get_my_roles {
         }
         if (ref($roles) eq 'ARRAY') {
             if (!grep(/^\Q$role\E$/,@{$roles})) {
+                if ($role =~ /^cr\//) {
+                    if (!grep(/^cr$/,@{$roles})) {
+                        next;
+                    }
+                } else {
+                    next;
+                }
+            }
+        }
+        if ($hidepriv) {
+            if ((&privileged($username,$domain)) &&
+                (!$nothide{$username.':'.$domain})) { 
                 next;
             }
-        } 
-	$returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
+        }
+        if ($withsec) {
+            $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
+                $tstart.':'.$tend;
+        } else {
+            $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
+        }
     }
     return %returnhash;
 }
@@ -2155,31 +2566,77 @@ sub getannounce {
 #
 
 sub courseidput {
-    my ($domain,$what,$coursehome)=@_;
-    return &reply('courseidput:'.$domain.':'.$what,$coursehome);
+    my ($domain,$storehash,$coursehome,$caller) = @_;
+    my $outcome;
+    if ($caller eq 'timeonly') {
+        my $cids = '';
+        foreach my $item (keys(%$storehash)) {
+            $cids.=&escape($item).'&';
+        }
+        $cids=~s/\&$//;
+        $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
+                          $coursehome);       
+    } else {
+        my $items = '';
+        foreach my $item (keys(%$storehash)) {
+            $items.= &escape($item).'='.
+                     &freeze_escape($$storehash{$item}).'&';
+        }
+        $items=~s/\&$//;
+        $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
+                          $coursehome);
+    }
+    if ($outcome eq 'unknown_cmd') {
+        my $what;
+        foreach my $cid (keys(%$storehash)) {
+            $what .= &escape($cid).'=';
+            foreach my $item ('description','inst_code','owner','type') {
+                $what .= &escape($storehash->{$cid}{$item}).':';
+            }
+            $what =~ s/\:$/&/;
+        }
+        $what =~ s/\&$//;  
+        return &reply('courseidput:'.$domain.':'.$what,$coursehome);
+    } else {
+        return $outcome;
+    }
 }
 
 sub courseiddump {
-    my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,$coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;
-    my %returnhash=();
-    unless ($domfilter) { $domfilter=''; }
+    my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
+        $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok)=@_;
+    my $as_hash = 1;
+    my %returnhash;
+    if (!$domfilter) { $domfilter=''; }
     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($coursefilter).':'.&escape($typefilter).':'.&escape($regexp_ok),
-                               $tryserver))) {
-		    my ($key,$value)=split(/\=/,$line,2);
-                    if (($key) && ($value)) {
-		        $returnhash{&unescape($key)}=$value;
-                    }
+	    if (($domfilter eq '') ||
+		(&host_domain($tryserver) eq $domfilter)) {
+                my $rep = 
+                  &reply('courseiddump:'.&host_domain($tryserver).':'.
+                         $sincefilter.':'.&escape($descfilter).':'.
+                         &escape($instcodefilter).':'.&escape($ownerfilter).
+                         ':'.&escape($coursefilter).':'.&escape($typefilter).
+                         ':'.&escape($regexp_ok).':'.$as_hash,$tryserver);
+                my @pairs=split(/\&/,$rep);
+                foreach my $item (@pairs) {
+                    my ($key,$value)=split(/\=/,$item,2);
+                    $key = &unescape($key);
+                    next if ($key =~ /^error: 2 /);
+                    my $result = &thaw_unescape($value);
+                    if (ref($result) eq 'HASH') {
+                        $returnhash{$key}=$result;
+                    } else {
+                        my @responses = split(/:/,$value);
+                        my @items = ('description','inst_code','owner','type');
+                        for (my $i=0; $i<@responses; $i++) {
+                            $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
+                        }
+                    } 
                 }
             }
         }
@@ -2225,7 +2682,10 @@ sub get_domain_roles {
     if (undef($enddate) || $enddate eq '') {
         $enddate = '.';
     }
-    my $rolelist = join(':',@{$roles});
+    my $rolelist;
+    if (ref($roles) eq 'ARRAY') {
+        $rolelist = join(':',@{$roles});
+    }
     my %personnel = ();
 
     my %servers = &get_servers($dom,'library');
@@ -2251,7 +2711,9 @@ sub get_first_access {
     my ($symb,$courseid,$udom,$uname)=&whichuser();
     if ($argsymb) { $symb=$argsymb; }
     my ($map,$id,$res)=&decode_symb($symb);
-    if ($type eq 'map') {
+    if ($type eq 'course') {
+	$res='course';
+    } elsif ($type eq 'map') {
 	$res=&symbread($map);
     } else {
 	$res=$symb;
@@ -2264,7 +2726,9 @@ sub set_first_access {
     my ($type)=@_;
     my ($symb,$courseid,$udom,$uname)=&whichuser();
     my ($map,$id,$res)=&decode_symb($symb);
-    if ($type eq 'map') {
+    if ($type eq 'course') {
+	$res='course';
+    } elsif ($type eq 'map') {
 	$res=&symbread($map);
     } else {
 	$res=$symb;
@@ -3059,7 +3523,7 @@ sub set_userprivs {
     if (keys(%{$allgroups}) > 0) {
         foreach my $role (keys %{$allroles}) {
             my ($trole,$area,$sec,$extendedarea);
-            if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)-) {
+            if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
                 $trole = $1;
                 $area = $2;
                 $sec = $3;
@@ -3079,7 +3543,7 @@ sub set_userprivs {
     }
     foreach my $role (keys(%{$allroles})) {
         my %thesepriv;
-        if (($role=~/^au/) || ($role=~/^ca/)) { $author=1; }
+        if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
         foreach my $item (split(/:/,$$allroles{$role})) {
             if ($item ne '') {
                 my ($privilege,$restrictions)=split(/&/,$item);
@@ -3540,9 +4004,16 @@ sub get_portfolio_access {
             }
             if (@users > 0) {
                 foreach my $userkey (@users) {
-                    if (exists($access_hash->{$userkey}{'users'}{$env{'user.name'}.':'.$env{'user.domain'}})) {
-                        return 'ok';
-                    }
+                    if (ref($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;
@@ -3702,26 +4173,40 @@ sub customaccess {
     $ucrs = &LONCAPA::clean_username($ucrs);
     my $access=0;
     foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
-	my ($effect,$realm,$role)=split(/\:/,$right);
-        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');
+	my ($effect,$realm,$role,$type)=split(/\:/,$right);
+	if ($type eq 'user') {
+	    foreach my $scope (split(/\s*\,\s*/,$realm)) {
+		my ($tdom,$tuname)=split(m{/},$scope);
+		if ($tdom) {
+		    if ($tdom ne $env{'user.domain'}) { next; }
+		}
+		if ($tuname) {
+		    if ($tuname 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;
@@ -4250,6 +4735,23 @@ sub update_portfolio_table {
     return $reply;
 }
 
+# -------------------------- Update MySQL allusers table
+
+sub update_allusers_table {
+    my ($uname,$udom,$names) = @_;
+    my $homeserver = &homeserver($uname,$udom);
+    my $queryid=
+        &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
+               'lastname='.&escape($names->{'lastname'}).'%%'.
+               'firstname='.&escape($names->{'firstname'}).'%%'.
+               'middlename='.&escape($names->{'middlename'}).'%%'.
+               'generation='.&escape($names->{'generation'}).'%%'.
+               'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
+               'id='.&escape($names->{'id'}),$homeserver);
+    my $reply = &get_query_reply($queryid);
+    return $reply;
+}
+
 # ------- Request retrieval of institutional classlists for course(s)
 
 sub fetch_enrollment_query {
@@ -4284,7 +4786,7 @@ sub fetch_enrollment_query {
     if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
         &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
     } else {
-        my @responses = split/:/,$reply;
+        my @responses = split(/:/,$reply);
         if ($homeserver eq $perlvar{'lonHostID'}) {
             foreach my $line (@responses) {
                 my ($key,$value) = split(/=/,$line,2);
@@ -4327,8 +4829,8 @@ sub get_query_reply {
 	sleep 2;
         if (-e $replyfile.'.end') {
 	    if (open(my $fh,$replyfile)) {
-               $reply.=<$fh>;
-               close($fh);
+		$reply = join('',<$fh>);
+		close($fh);
 	   } else { return 'error: reply_file_error'; }
            return &unescape($reply);
 	}
@@ -4373,8 +4875,25 @@ 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 $homeserver;
+        if (&is_course($cdom,$cnum)) {
+            $homeserver = &homeserver($cnum,$cdom);
+        } else {
+            $homeserver = &domain($cdom,'primary');
+        }
+        if ($homeserver ne 'no_host') {
+            $response = &reply('autorun:'.$cdom,$homeserver);
+        }
+    }
     return $response;
 }
 
@@ -4384,7 +4903,7 @@ sub auto_get_sections {
     my @secs = ();
     my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
     unless ($response eq 'refused') {
-        @secs = split/:/,$response;
+        @secs = split(/:/,$response);
     }
     return @secs;
 }
@@ -4404,15 +4923,27 @@ sub auto_validate_courseID {
 }
 
 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);
 }
@@ -4519,7 +5050,7 @@ sub auto_instcode_format {
         $response=&reply('autoinstcodeformat:'.$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;
+		split(/:/,$response);
             %{$codes} = (%{$codes},&str2hash($codes_str));
             push(@{$codetitles},&str2array($codetitles_str));
             %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
@@ -4565,10 +5096,16 @@ sub auto_instcode_defaults {
 } 
 
 sub auto_validate_class_sec {
-    my ($cdom,$cnum,$owner,$inst_class) = @_;
+    my ($cdom,$cnum,$owners,$inst_class) = @_;
     my $homeserver = &homeserver($cnum,$cdom);
+    my $ownerlist;
+    if (ref($owners) eq 'ARRAY') {
+        $ownerlist = join(',',@{$owners});
+    } else {
+        $ownerlist = $owners;
+    }
     my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
-                        &escape($owner).':'.$cdom,$homeserver);
+                        &escape($ownerlist).':'.$cdom,$homeserver);
     return $response;
 }
 
@@ -4761,11 +5298,21 @@ sub assignrole {
     } else {
         my $cwosec=$url;
         $cwosec=~s/^\/($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 '.
-		    $env{'user.name'}.' at '.$env{'user.domain'});
-           return 'refused'; 
+        if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
+            my $refused;
+            if (($env{'request.course.sec'}  ne '') && ($role eq 'st')) {
+                if (!(&allowed('c'.$role,$url))) {
+                    $refused = 1;
+                }
+            } else {
+                $refused = 1;
+            }
+            if ($refused) { 
+                &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
+                         ' '.$role.' '.$end.' '.$start.' by '.
+	  	         $env{'user.name'}.' at '.$env{'user.domain'});
+                return 'refused';
+            }
         }
         $mrole=$role;
     }
@@ -4899,7 +5446,8 @@ sub modifyuser {
     }
 # -------------------------------------------------------------- Add names, etc
     my @tmp=&get('environment',
-		   ['firstname','middlename','lastname','generation'],
+		   ['firstname','middlename','lastname','generation','id',
+                    'permanentemail'],
 		   $udom,$uname);
     my %names;
     if ($tmp[0] =~ m/^error:.*/) { 
@@ -4921,8 +5469,10 @@ sub modifyuser {
 			   $names{'critnotification'} = $email;
 			   $names{'permanentemail'} = $email; }
     }
+    if ($uid) { $names{'id'}  = $uid; }
     my $reply = &put('environment', \%names, $udom,$uname);
     if ($reply ne 'ok') { return 'error: '.$reply; }
+    my $sqlresult = &update_allusers_table($uname,$udom,\%names);
     &devalidate_cache_new('namescache',$uname.':'.$udom);
     &logthis('Success modifying user '.$udom.', '.$uname.', '.$uid.', '.
              $umode.', '.$first.', '.$middle.', '.
@@ -5094,10 +5644,15 @@ sub createcourse {
     }
 # ----------------------------------------------------------------- Course made
 # log existence
-    &courseidput($udom,&escape($udom.'_'.$uname).'='.&escape($description).
-                 ':'.&escape($inst_code).':'.&escape($course_owner).':'.
-                  &escape($crstype),$uhome);
-    &flushcourselogs();
+    my $newcourse = {
+                    $udom.'_'.$uname => {
+                                     description => $description,
+                                     inst_code   => $inst_code,
+                                     owner       => $course_owner,
+                                     type        => $crstype,
+                                                },
+                    };
+    &courseidput($udom,$newcourse,$uhome,'notime');
 # set toplevel url
     my $topurl=$url;
     unless ($nonstandard) {
@@ -5127,7 +5682,7 @@ ENDINITMAP
 sub is_course {
     my ($cdom,$cnum) = @_;
     my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
-				undef,'.');
+				undef,'.',undef,1);
     if (exists($courses{$cdom.'_'.$cnum})) {
         return 1;
     }
@@ -5217,7 +5772,7 @@ 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");
     }
@@ -5809,6 +6364,13 @@ sub devalidatecourseresdata {
 
 
 # --------------------------------------------------- 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)=@_;
@@ -5867,7 +6429,21 @@ 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 $result;
@@ -5878,8 +6454,8 @@ sub resdata {
     }
     if (!ref($result)) { return $result; }    
     foreach my $item (@which) {
-	if (defined($result->{$item})) {
-	    return $result->{$item};
+	if (defined($result->{$item->[0]})) {
+	    return [$result->{$item->[0]},$item->[1]];
 	}
     }
     return undef;
@@ -6045,6 +6621,12 @@ sub EXT {
 	    my ($map) = &decode_symb($symbparm);
 	    return &symbread($map);
 	}
+	if ($space eq 'filename') {
+	    if ($symbparm) {
+		return &clutter((&decode_symb($symbparm))[2]);
+	    }
+	    return &hreflocation('',$env{'request.filename'});
+	}
 
 	my ($section, $group, @groups);
 	my ($courselevelm,$courselevel);
@@ -6085,24 +6667,27 @@ sub EXT {
 # ----------------------------------------------------------- first, check user
 
 	    my $userreply=&resdata($uname,$udom,'user',
-				       ($courselevelr,$courselevelm,
-					$courselevel));
-	    if (defined($userreply)) { return $userreply; }
+				       ([$courselevelr,'resource'],
+					[$courselevelm,'map'     ],
+					[$courselevel, 'course'  ]));
+	    if (defined($userreply)) { return &get_reply($userreply); }
 
 # ------------------------------------------------ second, check some of course
             my $coursereply;
             if (@groups > 0) {
                 $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
                                        $mapparm,$spacequalifierrest);
-                if (defined($coursereply)) { return $coursereply; }
+                if (defined($coursereply)) { return &get_reply($coursereply); }
             }
 
 	    $coursereply=&resdata($env{'course.'.$courseid.'.num'},
-				     $env{'course.'.$courseid.'.domain'},
-				     'course',
-				     ($seclevelr,$seclevelm,$seclevel,
-				      $courselevelr));
-	    if (defined($coursereply)) { return $coursereply; }
+				  $env{'course.'.$courseid.'.domain'},
+				  'course',
+				  ([$seclevelr,   'resource'],
+				   [$seclevelm,   'map'     ],
+				   [$seclevel,    'course'  ],
+				   [$courselevelr,'resource']));
+	    if (defined($coursereply)) { return &get_reply($coursereply); }
 
 # ------------------------------------------------------ third, check map parms
 	    my %parmhash=();
@@ -6113,7 +6698,7 @@ sub EXT {
 		$thisparm=$parmhash{$symbparm};
 		untie(%parmhash);
 	    }
-	    if ($thisparm) { return $thisparm; }
+	    if ($thisparm) { return &get_reply([$thisparm,'resource']); }
 	}
 # ------------------------------------------ fourth, look in resource metadata
 
@@ -6126,18 +6711,19 @@ sub EXT {
 	    $filename=$env{'request.filename'};
 	}
 	my $metadata=&metadata($filename,$spacequalifierrest);
-	if (defined($metadata)) { return $metadata; }
+	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
 	$metadata=&metadata($filename,'parameter_'.$spacequalifierrest);
-	if (defined($metadata)) { return $metadata; }
+	if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
 
-# ---------------------------------------------- fourth, look in rest pf course
+# ---------------------------------------------- fourth, look in rest of course
 	if ($symbparm && defined($courseid) && 
 	    $courseid eq $env{'request.course.id'}) {
 	    my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
 				     $env{'course.'.$courseid.'.domain'},
 				     'course',
-				     ($courselevelm,$courselevel));
-	    if (defined($coursereply)) { return $coursereply; }
+				     ([$courselevelm,'map'   ],
+				      [$courselevel, 'course']));
+	    if (defined($coursereply)) { return &get_reply($coursereply); }
 	}
 # ------------------------------------------------------------------ Cascade up
 	unless ($space eq '0') {
@@ -6145,14 +6731,13 @@ sub EXT {
 	    my $id=pop(@parts);
 	    my $part=join('_',@parts);
 	    if ($part eq '') { $part='0'; }
-	    my $partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
+	    my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
 				 $symbparm,$udom,$uname,$section,1);
-	    if (defined($partgeneral)) { return $partgeneral; }
+	    if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
 	}
 	if ($recurse) { return undef; }
 	my $pack_def=&packages_tab_default($filename,$varname);
-	if (defined($pack_def)) { return $pack_def; }
-
+	if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
 # ---------------------------------------------------- Any other user namespace
     } elsif ($realm eq 'environment') {
 # ----------------------------------------------------------------- environment
@@ -6180,15 +6765,27 @@ sub EXT {
     return '';
 }
 
+sub get_reply {
+    my ($reply_value) = @_;
+    if (ref($reply_value) eq 'ARRAY') {
+        if (wantarray) {
+	    return @$reply_value;
+        }
+        return $reply_value->[0];
+    } else {
+        return $reply_value;
+    }
+}
+
 sub check_group_parms {
     my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
     my @groupitems = ();
     my $resultitem;
-    my @levels = ($symbparm,$mapparm,$what);
+    my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$what,'course']);
     foreach my $group (@{$groups}) {
         foreach my $level (@levels) {
-             my $item = $courseid.'.['.$group.'].'.$level;
-             push(@groupitems,$item);
+             my $item = $courseid.'.['.$group.'].'.$level->[0];
+             push(@groupitems,[$item,$level->[1]]);
         }
     }
     my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
@@ -6214,7 +6811,7 @@ sub packages_tab_default {
 	    $do_default=1;
 	} elsif ($pack_type eq 'extension') {
 	    push(@extension,[$package,$pack_type,$pack_part]);
-	} elsif ($pack_part eq $part) {
+	} elsif ($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]);
 	}
@@ -6281,8 +6878,11 @@ sub metadata {
     if (($uri eq '') || 
 	(($uri =~ m|^/*adm/|) && 
 	     ($uri !~ m|^adm/includes|) && ($uri !~ m|/bulletinboard$|)) ||
-        ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ /^~/) ||
-	($uri =~ m|home/$match_username/public_html/|)) {
+        ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) ) {
+	return undef;
+    }
+    if (($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) 
+	&& &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
 	return undef;
     }
     my $filename=$uri;
@@ -6303,6 +6903,7 @@ sub metadata {
 #	if (! exists($metacache{$uri})) {
 #	    $metacache{$uri}={};
 #	}
+	my $cachetime = 60*60;
         if ($liburi) {
 	    $liburi=&declutter($liburi);
             $filename=$liburi;
@@ -6313,7 +6914,13 @@ sub metadata {
         my %metathesekeys=();
         unless ($filename=~/\.meta$/) { $filename.='.meta'; }
 	my $metastring;
-	if ($uri !~ m -^(editupload)/-) {
+	if ($uri =~ /^~/ || $uri =~ m{home/$match_username/public_html/}) {
+	    my $which = &hreflocation('','/'.($liburi || $uri));
+	    $metastring = 
+		&Apache::lonnet::ssi_body($which,
+					  ('grade_target' => 'meta'));
+	    $cachetime = 1; # only want this cached in the child not long term
+	} elsif ($uri !~ m -^(editupload)/-) {
 	    my $file=&filelocation('',&clutter($filename));
 	    #push(@{$metaentry{$uri.'.file'}},$file);
 	    $metastring=&getfile($file);
@@ -6418,10 +7025,11 @@ sub metadata {
 		 # only ws inside the tag, and not in default, so use default
 		 # as value
 			    $metaentry{':'.$unikey}=$default;
-			} else {
-		  # either something interesting inside the tag or default
-                  # uninteresting
+			} elsif ( $internaltext =~ /\S/ ) {
+		  # something interesting inside the tag
 			    $metaentry{':'.$unikey}=$internaltext;
+			} else {
+		  # no interesting values, don't set a default
 			}
 # end of not-a-package not-a-library import
 		    }
@@ -6431,13 +7039,18 @@ sub metadata {
 	    }
 	}
 	my ($extension) = ($uri =~ /\.(\w+)$/);
+	$extension = lc($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($metaentry{':packages'})) {
+
+	if (!exists($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; }
@@ -6474,7 +7087,7 @@ sub metadata {
 	$metaentry{':keys'} = join(',',keys(%metathesekeys));
 	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
 	$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
-	&do_cache_new('meta',$uri,\%metaentry,60*60);
+	&do_cache_new('meta',$uri,\%metaentry,$cachetime);
 # this is the end of "was not already recently cached
     }
     return $metaentry{':'.$what};
@@ -6556,12 +7169,15 @@ sub gettitle {
 	}
 	my ($map,$resid,$url)=&decode_symb($symb);
 	my $title='';
-	my %bighash;
-	if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
-		&GDBM_READER(),0640)) {
-	    my $mapid=$bighash{'map_pc_'.&clutter($map)};
-	    $title=$bighash{'title_'.$mapid.'.'.$resid};
-	    untie %bighash;
+	if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
+	    $title = $env{'course.'.$env{'request.course.id'}.'.description'};
+	} else {
+	    if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
+		    &GDBM_READER(),0640)) {
+		my $mapid=$bighash{'map_pc_'.&clutter($map)};
+		$title=$bighash{'title_'.$mapid.'.'.$resid};
+		untie(%bighash);
+	    }
 	}
 	$title=~s/\&colon\;/\:/gs;
 	if ($title) {
@@ -6934,7 +7550,7 @@ sub getCODE {
 sub rndseed {
     my ($symb,$courseid,$domain,$username)=@_;
     my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
-    if (!$symb) {
+    if (!defined($symb)) {
 	unless ($symb=$wsymb) { return time; }
     }
     if (!$courseid) { $courseid=$wcourseid; }
@@ -7386,6 +8002,7 @@ sub filelocation {
 	$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:;
@@ -7406,6 +8023,8 @@ sub filelocation {
   	  $location=$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/:/:;
@@ -7416,7 +8035,13 @@ sub filelocation {
         }
     }
     $location=~s://+:/:g; # remove duplicate /
-    while ($location=~m:/\.\./:) {$location=~ s:/[^/]+/\.\./:/:g;} #remove dir/..
+    while ($location=~m{/\.\./}) {
+	if ($location =~ m{/[^/]+/\.\./}) {
+	    $location=~ s{/[^/]+/\.\./}{/}g;
+	} else {
+	    $location=~ s{/\.\./}{/}g;
+	}
+    } #remove dir/..
     while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
     return $location;
 }
@@ -7437,6 +8062,9 @@ sub hreflocation {
 	$file=~s-^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/
 	    -/uploaded/$1/$2/-x;
     }
+    if ($file=~ m{^/userfiles/}) {
+	$file =~ s{^/userfiles/}{/uploaded/};
+    }
     return $file;
 }
 
@@ -7465,14 +8093,11 @@ sub machine_ids {
     my ($hostname) = @_;
     $hostname ||= &hostname($perlvar{'lonHostID'});
     my @ids;
-    my %hostname = &all_hostnames();
-    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 {
@@ -7516,7 +8141,8 @@ 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 ($thisfn !~m|/adm|) {
@@ -7585,47 +8211,60 @@ sub correct_line_ends {
 sub goodbye {
    &logthis("Starting Shut down");
 #not converted to using infrastruture and probably shouldn't be
-   &logthis(sprintf("%-20s is %s",'%badServerCache',length(&freeze(\%badServerCache))));
+   &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
 #converted
 #   &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
-   &logthis(sprintf("%-20s is %s",'%homecache',length(&freeze(\%homecache))));
-#   &logthis(sprintf("%-20s is %s",'%titlecache',length(&freeze(\%titlecache))));
-#   &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&freeze(\%courseresdatacache))));
+   &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
+#   &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
+#   &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
 #1.1 only
-#   &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&freeze(\%userresdatacache))));
-#   &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&freeze(\%getsectioncache))));
-#   &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&freeze(\%courseresversioncache))));
-#   &logthis(sprintf("%-20s is %s",'%resversioncache',length(&freeze(\%resversioncache))));
-   &logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
+#   &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
+#   &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
+#   &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
+#   &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
+   &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
    &logthis(sprintf("%-20s is %s",'kicks',$kicks));
    &logthis(sprintf("%-20s is %s",'hits',$hits));
    &flushcourselogs();
    &logthis("Shutting down");
 }
 
-BEGIN {
-
-# ----------------------------------- Read loncapa.conf and loncapa_apache.conf
-    unless ($readit) {
-{
-    my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
-    %perlvar = (%perlvar,%{$configvars});
-}
-
 sub get_dns {
-    my ($url,$func) = @_;
+    my ($url,$func,$ignore_cache) = @_;
+    if (!$ignore_cache) {
+	my ($content,$cached)=
+	    &Apache::lonnet::is_cached_new('dns',$url);
+	if ($cached) {
+	    &$func($content);
+	    return;
+	}
+    }
+
+    my %alldns;
     open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
     foreach my $dns (<$config>) {
 	next if ($dns !~ /^\^(\S*)/x);
-	$dns = $1;
+	$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
 {
@@ -7646,12 +8285,17 @@ sub get_dns {
 		$this_domain{$field} = shift(@elements);
 	    }
 	    $domain{$name} = \%this_domain;
-	    &logthis("Domain.tab: $name ".$domain{$name}{'description'} );
 	}
     }
-    
+
+    sub reset_domain_info {
+	undef($loaded);
+	undef(%domain);
+    }
+
     sub load_domain_tab {
-	&get_dns('/adm/dns/domain',\&parse_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>;
@@ -7681,6 +8325,7 @@ sub get_dns {
     my %hostdom;
     my %libserv;
     my $loaded;
+    my %name_to_host;
 
     sub parse_hosts_tab {
 	my ($file) = @_;
@@ -7692,15 +8337,27 @@ sub get_dns {
 	    $name=~s/\s//g;
 	    if ($id && $domain && $role && $name) {
 		$hostname{$id}=$name;
+		push(@{$name_to_host{$name}}, $id);
 		$hostdom{$id}=$domain;
 		if ($role eq 'library') { $libserv{$id}=$name; }
 	    }
-	    &logthis("Hosts.tab: $name ".$id );
 	}
     }
+    
+    sub reset_hosts_info {
+	&purge_remembered();
+	&reset_domain_info();
+	&reset_hosts_ip_info();
+	undef(%name_to_host);
+	undef(%hostname);
+	undef(%hostdom);
+	undef(%libserv);
+	undef($loaded);
+    }
 
     sub load_hosts_tab {
-	&get_dns('/adm/dns/hosts',\&parse_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);
@@ -7708,9 +8365,6 @@ sub get_dns {
 	$loaded=1;
     }
 
-    # FIXME: dev server don't want this, production servers _do_ want this
-    #&get_iphost();
-
     sub hostname {
 	&load_hosts_tab() if (!$loaded);
 
@@ -7724,6 +8378,12 @@ sub get_dns {
 	return %hostname;
     }
 
+    sub all_names {
+	&load_hosts_tab() if (!$loaded);
+
+	return %name_to_host;
+    }
+
     sub is_library {
 	&load_hosts_tab() if (!$loaded);
 
@@ -7779,6 +8439,7 @@ sub get_dns {
     my %iphost;
     my %name_to_ip;
     my %lonid_to_ip;
+
     sub get_hosts_from_ip {
 	my ($ip) = @_;
 	my %iphosts = &get_iphost();
@@ -7787,6 +8448,12 @@ sub get_dns {
 	}
 	return;
     }
+    
+    sub reset_hosts_ip_info {
+	undef(%iphost);
+	undef(%name_to_ip);
+	undef(%lonid_to_ip);
+    }
 
     sub get_host_ip {
 	my ($lonid) = @_;
@@ -7803,29 +8470,73 @@ sub get_dns {
     }
     
     sub get_iphost {
-	if (%iphost) { return %iphost; }
-	my %hostname = &all_hostnames();
-	foreach my $id (keys(%hostname)) {
-	    my $name=$hostname{$id};
+	my ($ignore_cache) = @_;
+
+	if (!$ignore_cache) {
+	    if (%iphost) {
+		return %iphost;
+	    }
+	    my ($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) {
-		    &logthis("Skipping host $id name $name no IP found");
-		    next;
+		    if (defined($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);
 		}
-		$ip=inet_ntoa($ip);
 		$name_to_ip{$name} = $ip;
 	    } else {
 		$ip = $name_to_ip{$name};
 	    }
-	    $lonid_to_ip{$id} = $ip;
-	    push(@{$iphost{$ip}},$id);
+	    foreach my $id (@{ $name_to_host{$name} }) {
+		$lonid_to_ip{$id} = $ip;
+	    }
+	    push(@{$iphost{$ip}},@{$name_to_host{$name}});
 	}
+	&Apache::lonnet::do_cache_new('iphost','iphost',
+				      [\%iphost,\%name_to_ip,\%lonid_to_ip],
+				      48*60*60);
+
 	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");
@@ -8196,14 +8907,15 @@ explanation of a user role term
 
 =item *
 
-get_my_roles($uname,$udom,$context,$types,$roles,$roledoms) :
+get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
 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,
+(default), or if $context is 'userroles', roles for the user himself,
+In the hash, keys are set to colon-separated $uname,$udom,$role, and
+(optionally) if $withsec is true, a fourth colon-separated item - $section.
+For each key, 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 
@@ -8351,6 +9063,14 @@ 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
@@ -8632,12 +9352,15 @@ critical subroutine
 
 =item *
 
-get_dom($namespace,$storearr,$udomain) : returns hash with keys from array
-reference filled in from namespace found in domain level on primary domain server ($udomain is optional)
+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,$udomain) :  stores hash in namespace at domain level on primary domain server ($udomain is optional)
+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
 
@@ -9030,3 +9753,4 @@ symblist($mapname,%newhash) : update sym
 =back
 
 =cut
+