--- loncom/lonnet/perl/lonnet.pm	2009/05/06 12:13:26	1.996
+++ loncom/lonnet/perl/lonnet.pm	2009/09/28 19:13:37	1.1029
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.996 2009/05/06 12:13:26 raeburn Exp $
+# $Id: lonnet.pm,v 1.1029 2009/09/28 19:13:37 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -92,6 +92,7 @@ use Time::HiRes qw( gettimeofday tv_inte
 use Cache::Memcached;
 use Digest::MD5;
 use Math::Random;
+use File::MMagic;
 use LONCAPA qw(:DEFAULT :match);
 use LONCAPA::Configuration;
 
@@ -718,7 +719,12 @@ sub spareserver {
         if ($protocol{$spare_server} eq 'https') {
             $protocol = $protocol{$spare_server};
         }
-	$spare_server = $protocol.'://'.&hostname($spare_server);
+        if (defined($spare_server)) {
+            my $hostname = &hostname($spare_server);
+            if (defined($hostname)) {  
+	        $spare_server = $protocol.'://'.$hostname;
+            }
+        }
     }
     return $spare_server;
 }
@@ -953,7 +959,21 @@ sub idput {
     }
 }
 
-# ------------------------------------------- get items from domain db files   
+# ------------------------------dump from db file owned by domainconfig user
+sub dump_dom {
+    my ($namespace,$udom,$regexp,$range)=@_;
+    if (!$udom) {
+        $udom=$env{'user.domain'};
+    }
+    my %returnhash;
+    if ($udom) {
+        my $uname = &get_domainconfiguser($udom);
+        %returnhash = &dump($namespace,$udom,$uname,$regexp,$range);
+    }
+    return %returnhash;
+}
+
+# ------------------------------------------ get items from domain db files   
 
 sub get_dom {
     my ($namespace,$storearr,$udom,$uhome)=@_;
@@ -1027,6 +1047,40 @@ sub put_dom {
     }
 }
 
+# --------------------- newput for items in db file owned by domainconfig user
+sub newput_dom {
+    my ($namespace,$storehash,$udom) = @_;
+    my $result;
+    if (!$udom) {
+        $udom=$env{'user.domain'};
+    }
+    if ($udom) {
+        my $uname = &get_domainconfiguser($udom);
+        $result = &newput($namespace,$storehash,$udom,$uname);
+    }
+    return $result;
+}
+
+# --------------------- delete for items in db file owned by domainconfig user
+sub del_dom {
+    my ($namespace,$storearr,$udom)=@_;
+    if (ref($storearr) eq 'ARRAY') {
+        if (!$udom) {
+            $udom=$env{'user.domain'};
+        }
+        if ($udom) {
+            my $uname = &get_domainconfiguser($udom); 
+            return &del($namespace,$storearr,$udom,$uname);
+        }
+    }
+}
+
+# ----------------------------------construct domainconfig user for a domain 
+sub get_domainconfiguser {
+    my ($udom) = @_;
+    return $udom.'-domainconfig';
+}
+
 sub retrieve_inst_usertypes {
     my ($udom) = @_;
     my (%returnhash,@order);
@@ -1321,7 +1375,7 @@ sub get_domain_defaults {
         }
     }
     if (ref($domconfig{'requestcourses'}) eq 'HASH') {
-        foreach my $item ('official','unofficial') {
+        foreach my $item ('official','unofficial','community') {
             $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
         }
     }
@@ -1660,12 +1714,14 @@ sub userenvironment {
     }
     $items=~s/\&$//;
     my %returnhash=();
-    my @answer=split(/\&/,
-                &reply('get:'.$udom.':'.$unam.':environment:'.$items,
-                      &homeserver($unam,$udom)));
-    my $i;
-    for ($i=0;$i<=$#what;$i++) {
-	$returnhash{$what[$i]}=&unescape($answer[$i]);
+    my $uhome = &homeserver($unam,$udom);
+    unless ($uhome eq 'no_host') {
+        my @answer=split(/\&/, 
+            &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
+        my $i;
+        for ($i=0;$i<=$#what;$i++) {
+	    $returnhash{$what[$i]}=&unescape($answer[$i]);
+        }
     }
     return %returnhash;
 }
@@ -1861,6 +1917,8 @@ sub ssi_body {
     if ($filelink=~/^https?\:/) {
        ($output,$response)=&externalssi($filelink);
     } else {
+       $filelink .= $filelink=~/\?/ ? '&' : '?';
+       $filelink .= 'inhibitmenu=yes';
        ($output,$response)=&ssi($filelink,%form);
     }
     $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
@@ -1904,7 +1962,7 @@ sub ssi {
     &Apache::lonenc::check_encrypt(\$fn);
     if (%form) {
       $request=new HTTP::Request('POST',&absolute_url().$fn);
-      $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys %form));
+      $request->content(join('&',map { &escape($_).'='.&escape($form{$_}) } keys(%form)));
     } else {
       $request=new HTTP::Request('GET',&absolute_url().$fn);
     }
@@ -2002,9 +2060,13 @@ sub process_coursefile {
             print $fh $env{'form.'.$source};
             close($fh);
             if ($parser eq 'parse') {
-                my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
-                unless ($parse_result eq 'ok') {
-                    &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
+                my $mm = new File::MMagic;
+                my $mime_type = $mm->checktype_filename($filepath.'/'.$fname);
+                if ($mime_type eq 'text/html') {
+                    my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
+                    unless ($parse_result eq 'ok') {
+                        &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
+                    }
                 }
             }
             $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
@@ -2246,11 +2308,15 @@ sub finishuserfileupload {
 	}
     }
     if ($parser eq 'parse') {
-        my $parse_result = &extract_embedded_items($filepath.'/'.$file,$allfiles,
-						   $codebase);
-        unless ($parse_result eq 'ok') {
-            &logthis('Failed to parse '.$filepath.$file.
-		     ' for embedded media: '.$parse_result); 
+        my $mm = new File::MMagic;
+        my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
+        if ($mime_type eq 'text/html') {
+            my $parse_result = &extract_embedded_items($filepath.'/'.$file,
+                                                       $allfiles,$codebase);
+            unless ($parse_result eq 'ok') {
+                &logthis('Failed to parse '.$filepath.$file.
+	   	         ' for embedded media: '.$parse_result); 
+            }
         }
     }
     if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
@@ -2554,7 +2620,7 @@ sub flushcourselogs {
 # Reverse lookup of domain roles (dc, ad, li, sc, au)
 #
     my %domrolebuffer = ();
-    foreach my $entry (keys %domainrolehash) {
+    foreach my $entry (keys(%domainrolehash)) {
         my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
         if ($domrolebuffer{$rudom}) {
             $domrolebuffer{$rudom}.='&'.&escape($entry).
@@ -2734,15 +2800,29 @@ sub get_course_adv_roles {
     my %dumphash=
             &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
     my $now=time;
-    foreach my $entry (keys %dumphash) {
+    my %privileged;
+    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,$section)=split(/\:/,$entry);
 	if ($username eq '' || $domain eq '') { next; }
-	if ((&privileged($username,$domain)) && 
-	    (!$nothide{$username.':'.$domain})) { next; }
+        unless (ref($privileged{$domain}) eq 'HASH') {
+            my %dompersonnel =
+                &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
+            $privileged{$domain} = {};
+            foreach my $server (keys(%dompersonnel)) {
+                if (ref($dompersonnel{$server}) eq 'HASH') {
+                    foreach my $user (keys(%{$dompersonnel{$server}})) {
+                        my ($trole,$uname,$udom) = split(/:/,$user);
+                        $privileged{$udom}{$uname} = 1;
+                    }
+                }
+            }
+        }
+        if ((exists($privileged{$domain}{$username})) && 
+            (!$nothide{$username.':'.$domain})) { next; }
 	if ($role eq 'cr') { next; }
         if ($codes) {
             if ($section) { $role .= ':'.$section; }
@@ -2787,6 +2867,7 @@ sub get_my_roles {
     }
     my %returnhash=();
     my $now=time;
+    my %privileged;
     foreach my $entry (keys(%dumphash)) {
         my ($role,$tend,$tstart);
         if ($context eq 'userroles') {
@@ -2835,9 +2916,32 @@ sub get_my_roles {
             }
         }
         if ($hidepriv) {
-            if ((&privileged($username,$domain)) &&
-                (!$nothide{$username.':'.$domain})) { 
-                next;
+            if ($context eq 'userroles') {
+                if ((&privileged($username,$domain)) &&
+                    (!$nothide{$username.':'.$domain})) {
+                    next;
+                }
+            } else {
+                unless (ref($privileged{$domain}) eq 'HASH') {
+                    my %dompersonnel =
+                        &Apache::lonnet::get_domain_roles($domain,['dc'],$now,$now);
+                    $privileged{$domain} = {};
+                    if (keys(%dompersonnel)) {
+                        foreach my $server (keys(%dompersonnel)) {
+                            if (ref($dompersonnel{$server}) eq 'HASH') {
+                                foreach my $user (keys(%{$dompersonnel{$server}})) {
+                                    my ($trole,$uname,$udom) = split(/:/,$user);
+                                    $privileged{$udom}{$uname} = $trole;
+                                }
+                            }
+                        }
+                    }
+                }
+                if (exists($privileged{$domain}{$username})) {
+                    if (!$nothide{$username.':'.$domain}) {
+                        next;
+                    }
+                }
             }
         }
         if ($withsec) {
@@ -2923,7 +3027,8 @@ sub courseidput {
 sub courseiddump {
     my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
         $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
-        $selfenrollonly,$catfilter,$showhidden,$caller)=@_;
+        $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
+        $cloneonly,$createdbefore,$createdafter,$creationcontext)=@_;
     my $as_hash = 1;
     my %returnhash;
     if (!$domfilter) { $domfilter=''; }
@@ -2942,7 +3047,10 @@ sub courseiddump {
                          ':'.&escape($coursefilter).':'.&escape($typefilter).
                          ':'.&escape($regexp_ok).':'.$as_hash.':'.
                          &escape($selfenrollonly).':'.&escape($catfilter).':'.
-                         $showhidden.':'.$caller,$tryserver);
+                         $showhidden.':'.$caller.':'.&escape($cloner).':'.
+                         &escape($cc_clone).':'.$cloneonly.':'.
+                         &escape($createdbefore).':'.&escape($createdafter).':'.
+                         &escape($creationcontext),$tryserver);
                 my @pairs=split(/\&/,$rep);
                 foreach my $item (@pairs) {
                     my ($key,$value)=split(/\=/,$item,2);
@@ -2957,7 +3065,7 @@ sub courseiddump {
                         for (my $i=0; $i<@responses; $i++) {
                             $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
                         }
-                    } 
+                    }
                 }
             }
         }
@@ -2997,10 +3105,10 @@ sub dcmaildump {
 
 sub get_domain_roles {
     my ($dom,$roles,$startdate,$enddate)=@_;
-    if (undef($startdate) || $startdate eq '') {
+    if ((!defined($startdate)) || ($startdate eq '')) {
         $startdate = '.';
     }
-    if (undef($enddate) || $enddate eq '') {
+    if ((!defined($enddate)) || ($enddate eq '')) {
         $enddate = '.';
     }
     my $rolelist;
@@ -3407,7 +3515,7 @@ sub tmpreset {
   if (tie(%hash,'GDBM_File',
 	  $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
 	  &GDBM_WRCREAT(),0640)) {
-    foreach my $key (keys %hash) {
+    foreach my $key (keys(%hash)) {
       if ($key=~ /:$symb/) {
 	delete($hash{$key});
       }
@@ -3843,7 +3951,7 @@ sub set_userprivs {
     my $adv=0;
     my %grouproles = ();
     if (keys(%{$allgroups}) > 0) {
-        foreach my $role (keys %{$allroles}) {
+        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*)\.-) {
                 $trole = $1;
@@ -3887,7 +3995,7 @@ sub set_userprivs {
 }
 
 sub role_status {
-    my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
+    my ($rolekey,$then,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
     my @pwhere = ();
     if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
         (undef,undef,$$role,@pwhere)=split(/\./,$rolekey);
@@ -3898,7 +4006,41 @@ sub role_status {
             $$tstatus='is';
             if ($$tstart && $$tstart>$then) {
                 $$tstatus='future';
-                if ($$tstart<$now) { $$tstatus='will'; }
+                if ($$tstart && $$tstart>$refresh) {
+                    if ($$tstart<$now) {
+                        if (($$where ne '') && ($$role ne '')) {
+                            my (%allroles,%allgroups,$group_privs);
+                            my %userroles = (
+                                'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
+                            );
+                            my $spec=$$role.'.'.$$where;
+                            my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
+                            if ($$role eq 'gr') {
+                                my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
+                                                    $env{'user.name'})=@_;
+                                my ($trole) = split('_',$role,1);
+                                (undef,my $group_privs) = split(/\//,$trole);
+                                $group_privs = &unescape($group_privs);
+                            }
+                            if ($$role =~ /^cr\//) {
+                                &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
+                            } elsif ($$role eq 'gr') {
+                                my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
+                                                    $env{'user.name'});
+                                my $trole = split('_',$rolehash{$$where.'_'.$$role},1);
+                                (undef,my $group_privs) = split(/\//,$trole);
+                                $group_privs = &unescape($group_privs);
+                                &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
+                            } else {
+                                &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
+                            }
+                            my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups);
+                            &appenv(\%userroles,[$$role,'cm']);
+                            &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
+                            $$tstatus = 'is';
+                        }
+                    }
+                }
             }
             if ($$tend) {
                 if ($$tend<$then) {
@@ -3912,11 +4054,11 @@ sub role_status {
 }
 
 sub check_adhoc_privs {
-    my ($cdom,$cnum,$then,$now,$checkrole) = @_;
+    my ($cdom,$cnum,$then,$refresh,$now,$checkrole) = @_;
     my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
     if ($env{$cckey}) {
         my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
-        &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
+        &role_status($cckey,$then,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
         unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
             &set_adhoc_privileges($cdom,$cnum,$checkrole);
         }
@@ -4556,6 +4698,7 @@ sub usertools_access {
         %tools = (
                       official   => 1,
                       unofficial => 1,
+                      community  => 1,
                  );
     } else {
         %tools = (
@@ -4588,7 +4731,7 @@ sub usertools_access {
         $toolstatus = $env{'environment.'.$context.'.'.$tool};
         $inststatus = $env{'environment.inststatus'};
     } else {
-        my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool);
+        my %userenv = &userenvironment($udom,$uname,$context.'.'.$tool,'inststatus');
         $toolstatus = $userenv{$context.'.'.$tool};
         $inststatus = $userenv{'inststatus'};
     }
@@ -5003,7 +5146,7 @@ sub allowed {
 
     my $envkey;
     if ($thisallowed=~/L/) {
-        foreach $envkey (keys %env) {
+        foreach $envkey (keys(%env)) {
            if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
                my $courseid=$2;
                my $roleid=$1.'.'.$2;
@@ -5294,7 +5437,7 @@ sub fetch_enrollment_query {
     }
     my $host=&hostname($homeserver);
     my $cmd = '';
-    foreach my $affiliate (keys %{$affiliatesref}) {
+    foreach my $affiliate (keys(%{$affiliatesref})) {
         $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
     }
     $cmd =~ s/%%$//;
@@ -5427,11 +5570,21 @@ sub auto_run {
 
 sub auto_get_sections {
     my ($cnum,$cdom,$inst_coursecode) = @_;
-    my $homeserver = &homeserver($cnum,$cdom);
-    my @secs = ();
-    my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
-    unless ($response eq 'refused') {
-        @secs = split(/:/,$response);
+    my $homeserver;
+    if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) { 
+        $homeserver = &homeserver($cnum,$cdom);
+    }
+    if (!defined($homeserver)) { 
+        if ($cdom =~ /^$match_domain$/) {
+            $homeserver = &domain($cdom,'primary');
+        }
+    }
+    my @secs;
+    if (defined($homeserver)) {
+        my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
+        unless ($response eq 'refused') {
+            @secs = split(/:/,$response);
+        }
     }
     return @secs;
 }
@@ -5450,6 +5603,23 @@ sub auto_validate_courseID {
     return $response;
 }
 
+sub auto_validate_instcode {
+    my ($cnum,$cdom,$instcode,$owner) = @_;
+    my ($homeserver,$response);
+    if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
+        $homeserver = &homeserver($cnum,$cdom);
+    }
+    if (!defined($homeserver)) {
+        if ($cdom =~ /^$match_domain$/) {
+            $homeserver = &domain($cdom,'primary');
+        }
+    }
+    my $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
+                           &escape($instcode).':'.&escape($owner),$homeserver));
+    my ($outcome,$description) = map { &unescape($_); } split('&',$response,2);
+    return ($outcome,$description);
+}
+
 sub auto_create_password {
     my ($cnum,$cdom,$authparam,$udom) = @_;
     my ($homeserver,$response);
@@ -5564,6 +5734,13 @@ sub auto_instcode_format {
 		push(@homeservers,$tryserver);
 	    }
         }
+    } elsif ($caller eq 'requests') {
+        if ($codedom =~ /^$match_domain$/) {
+            my $chome = &domain($codedom,'primary');
+            unless ($chome eq 'no_host') {
+                push(@homeservers,$chome);
+            }
+        }
     } else {
         push(@homeservers,&homeserver($caller,$codedom));
     }
@@ -5621,7 +5798,81 @@ sub auto_instcode_defaults {
     }
 
     return $response;
-} 
+}
+
+sub auto_possible_instcodes {
+    my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
+    unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') && 
+            (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
+        return;
+    }
+    my (@homeservers,$uhome);
+    if (defined(&domain($domain,'primary'))) {
+        $uhome=&domain($domain,'primary');
+        push(@homeservers,&domain($domain,'primary'));
+    } else {
+        my %servers = &get_servers($domain,'library');
+        foreach my $tryserver (keys(%servers)) {
+            if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
+                push(@homeservers,$tryserver);
+            }
+        }
+    }
+    my $response;
+    foreach my $server (@homeservers) {
+        $response=&reply('autopossibleinstcodes:'.$domain,$server);
+        next if ($response =~ /(con_lost|error|no_such_host|refused)/);
+        my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) = 
+            split(':',$response);
+        @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
+        @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
+        foreach my $item (split('&',$cat_title)) {   
+            my ($name,$value)=split('=',$item);
+            $cat_titles->{&unescape($name)}=&thaw_unescape($value);
+        }
+        foreach my $item (split('&',$cat_order)) {
+            my ($name,$value)=split('=',$item);
+            $cat_orders->{&unescape($name)}=&thaw_unescape($value);
+        }
+        return 'ok';
+    }
+    return $response;
+}
+
+sub auto_courserequest_checks {
+    my ($dom) = @_;
+    my ($homeserver,%validations);
+    if ($dom =~ /^$match_domain$/) {
+        $homeserver = &domain($dom,'primary');
+    }
+    unless ($homeserver eq 'no_host') {
+        my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
+        unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
+            my @items = split(/&/,$response);
+            foreach my $item (@items) {
+                my ($key,$value) = split('=',$item);
+                $validations{&unescape($key)} = &thaw_unescape($value);
+            }
+        }
+    }
+    return %validations; 
+}
+
+sub auto_courserequest_validation {
+    my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist) = @_;
+    my ($homeserver,$response);
+    if ($dom =~ /^$match_domain$/) {
+        $homeserver = &domain($dom,'primary');
+    }
+    unless ($homeserver eq 'no_host') {  
+          
+        $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
+                                    ':'.&escape($crstype).':'.&escape($inststatuslist).
+                                    ':'.&escape($instcode).':'.&escape($instseclist),
+                                    $homeserver));
+    }
+    return $response;
+}
 
 sub auto_validate_class_sec {
     my ($cdom,$cnum,$owners,$inst_class) = @_;
@@ -5789,8 +6040,8 @@ sub plaintext {
         }
     }
     my %rolenames = (
-                      Course => 'std',
-                      Group => 'alt1',
+                      Course    => 'std',
+                      Community => 'alt1',
                     );
     if (defined($type) && 
          defined($rolenames{$type}) && 
@@ -5811,10 +6062,27 @@ sub assignrole {
         my $cwosec=$url;
         $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
 	unless (&allowed('ccr',$cwosec)) {
-           &logthis('Refused custom assignrole: '.
-             $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
-		    $env{'user.name'}.' at '.$env{'user.domain'});
-           return 'refused'; 
+           my $refused = 1;
+           if ($context eq 'requestcourses') {
+               if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
+                   if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
+                       if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
+                           my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
+                           my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
+                           if ($crsenv{'internal.courseowner'} eq
+                               $env{'user.name'}.':'.$env{'user.domain'}) {
+                               $refused = '';
+                           }
+                       }
+                   }
+               }
+           }
+           if ($refused) {
+               &logthis('Refused custom assignrole: '.
+                        $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
+                        ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
+               return 'refused';
+           }
         }
         $mrole='cr';
     } elsif ($role =~ /^gr\//) {
@@ -5842,7 +6110,18 @@ sub assignrole {
             if ($refused) {
                 if (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
                     $refused = '';
-                } else {
+                } elsif ($context eq 'requestcourses') {
+                    my @possroles = ('st','ta','ep','in','cc');
+                    if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
+                        my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
+                        my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
+                        if ($crsenv{'internal.courseowner'} eq 
+                             $env{'user.name'}.':'.$env{'user.domain'}) {
+                            $refused = '';
+                        }
+                    }
+                }
+                if ($refused) {
                     &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
                              ' '.$role.' '.$end.' '.$start.' by '.
 	  	             $env{'user.name'}.' at '.$env{'user.domain'});
@@ -6166,28 +6445,57 @@ sub writecoursepref {
 
 sub createcourse {
     my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
-        $course_owner,$crstype)=@_;
+        $course_owner,$crstype,$cnum,$context,$category)=@_;
     $url=&declutter($url);
     my $cid='';
-    unless (&allowed('ccc',$udom)) {
+    if ($context eq 'requestcourses') {
+        my $can_create = 0;
+        my ($ownername,$ownerdom) = split(':',$course_owner);
+        if ($udom eq $ownerdom) {
+            if (&usertools_access($ownername,$ownerdom,$category,undef,
+                                  $context)) {
+                $can_create = 1;
+            }
+        } else {
+            my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
+                                           $category);
+            if ($userenv{'reqcrsotherdom.'.$category} ne '') {
+                my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
+                if (@curr > 0) {
+                    my @options = qw(approval validate autolimit);
+                    my $optregex = join('|',@options);
+                    if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
+                        $can_create = 1;
+                    }
+                }
+            }
+        }
+        if ($can_create) {
+            unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
+                unless (&allowed('ccc',$udom)) {
+                    return 'refused'; 
+                }
+            }
+        } else {
+            return 'refused';
+        }
+    } elsif (!&allowed('ccc',$udom)) {
         return 'refused';
     }
-# ------------------------------------------------------------------- Create ID
-   my $uname=int(1+rand(9)).
-       ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
-       substr($$.time,0,5).unpack("H8",pack("I32",time)).
-       unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
-# ----------------------------------------------- Make sure that does not exist
-   my $uhome=&homeserver($uname,$udom,'true');
-   unless (($uhome eq '') || ($uhome eq 'no_host')) {
-       $uname=substr($$.time,0,5).unpack("H8",pack("I32",time)).
-        unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
-       $uhome=&homeserver($uname,$udom,'true');       
-       unless (($uhome eq '') || ($uhome eq 'no_host')) {
-           return 'error: unable to generate unique course-ID';
-       } 
-   }
-# ------------------------------------------------ Check supplied server name
+# --------------------------------------------------------------- Get Unique ID
+    my $uname;
+    if ($cnum =~ /^$match_courseid$/) {
+        my $chome=&homeserver($cnum,$udom,'true');
+        if (($chome eq '') || ($chome eq 'no_host')) {
+            $uname = $cnum;
+        } else {
+            $uname = &generate_coursenum($udom);
+        }
+    } else {
+        $uname = &generate_coursenum($udom);
+    }
+    return $uname if ($uname =~ /^error/);
+# -------------------------------------------------- Check supplied server name
     $course_server = $env{'user.homeserver'} if (! defined($course_server));
     if (! &is_library($course_server)) {
         return 'error:bad server name '.$course_server;
@@ -6196,18 +6504,23 @@ sub createcourse {
     my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
                       $course_server);
     unless ($reply eq 'ok') { return 'error: '.$reply; }
-    $uhome=&homeserver($uname,$udom,'true');
+    my $uhome=&homeserver($uname,$udom,'true');
     if (($uhome eq '') || ($uhome eq 'no_host')) { 
 	return 'error: no such course';
     }
 # ----------------------------------------------------------------- Course made
 # log existence
+    my $now = time;
     my $newcourse = {
                     $udom.'_'.$uname => {
                                      description => $description,
                                      inst_code   => $inst_code,
                                      owner       => $course_owner,
                                      type        => $crstype,
+                                     creator     => $env{'user.name'}.':'.
+                                                    $env{'user.domain'},
+                                     created     => $now,
+                                     context     => $context,
                                                 },
                     };
     &courseidput($udom,$newcourse,$uhome,'notime');
@@ -6237,6 +6550,30 @@ ENDINITMAP
     return '/'.$udom.'/'.$uname;
 }
 
+# ------------------------------------------------------------------- Create ID
+sub generate_coursenum {
+    my ($udom) = @_;
+    my $domdesc = &domain($udom);
+    return 'error: invalid domain' if ($domdesc eq '');
+    my $uname=int(1+rand(9)).
+        ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
+        substr($$.time,0,5).unpack("H8",pack("I32",time)).
+        unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
+# ----------------------------------------------- Make sure that does not exist
+    my $uhome=&homeserver($uname,$udom,'true');
+    unless (($uhome eq '') || ($uhome eq 'no_host')) {
+        $uname=int(1+rand(9)).
+               ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
+               substr($$.time,0,5).unpack("H8",pack("I32",time)).
+               unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
+        $uhome=&homeserver($uname,$udom,'true');
+        unless (($uhome eq '') || ($uhome eq 'no_host')) {
+            return 'error: unable to generate unique course-ID';
+        }
+    }
+    return $uname;
+}
+
 sub is_course {
     my ($cdom,$cnum) = @_;
     my %courses = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,
@@ -6247,6 +6584,39 @@ sub is_course {
     return 0;
 }
 
+sub store_userdata {
+    my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
+    my $result;
+    if ($datakey ne '') {
+        if (ref($storehash) eq 'HASH') {
+            if ($udom eq '' || $uname eq '') {
+                $udom = $env{'user.domain'};
+                $uname = $env{'user.name'};
+            }
+            my $uhome=&homeserver($uname,$udom);
+            if (($uhome eq '') || ($uhome eq 'no_host')) {
+                $result = 'error: no_host';
+            } else {
+                $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
+                $storehash->{'host'} = $perlvar{'lonHostID'};
+
+                my $namevalue='';
+                foreach my $key (keys(%{$storehash})) {
+                    $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
+                }
+                $namevalue=~s/\&$//;
+                $result =  &reply("store:$env{'user.domain'}:$env{'user.name'}:".
+                                  "$namespace:$datakey:$namevalue",$uhome);
+            }
+        } else {
+            $result = 'error: data to store was not a hash reference'; 
+        }
+    } else {
+        $result= 'error: invalid requestkey'; 
+    }
+    return $result;
+}
+
 # ---------------------------------------------------------- Assign Custom Role
 
 sub assigncustomrole {
@@ -7736,6 +8106,11 @@ sub devalidate_title_cache {
     &devalidate_cache_new('title',$key);
 }
 
+# ------------------------------------------------- Get the title of a course
+
+sub current_course_title {
+    return $env{ 'course.' . $env{'request.course.id'} . '.description' };
+}
 # ------------------------------------------------- Get the title of a resource
 
 sub gettitle {
@@ -7802,7 +8177,7 @@ sub symblist {
     if (($env{'request.course.fn'}) && (%newhash)) {
         if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                       &GDBM_WRCREAT(),0640)) {
-	    foreach my $url (keys %newhash) {
+	    foreach my $url (keys(%newhash)) {
 		next if ($url eq 'last_known'
 			 && $env{'form.no_update_last_known'});
 		$hash{declutter($url)}=&encode_symb($mapname,
@@ -9549,7 +9924,7 @@ and course level
 
 plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash 
 (rolesplain.tab); plain text explanation of a user role term.
-$type is Course (default) or Group.
+$type is Course (default) or Community.
 If $forcedefault evaluates to true, text returned will be default 
 text for $type. Otherwise, if this is a course, the text returned 
 will be a custom name for the role (if defined in the course's 
@@ -9759,7 +10134,11 @@ database) for a course
 
 =item *
 
-createcourse($udom,$description,$url) : make/modify course
+createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
+
+=item *
+
+generate_coursenum($udom) : get a unique (unused) course number in domain $udom
 
 =back