--- loncom/interface/lonuserutils.pm	2007/10/22 22:16:38	1.1
+++ loncom/interface/lonuserutils.pm	2007/12/05 17:53:13	1.9
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Utility functions for managing LON-CAPA user accounts
 #
-# $Id: lonuserutils.pm,v 1.1 2007/10/22 22:16:38 raeburn Exp $
+# $Id: lonuserutils.pm,v 1.9 2007/12/05 17:53:13 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -35,7 +35,8 @@ use Apache::lonnet;
 use Apache::loncommon();
 use Apache::lonhtmlcommon;
 use Apache::lonlocal;
-use LONCAPA();
+use Apache::longroup;
+use LONCAPA qw(:DEFAULT :match);
 
 ###############################################################
 ###############################################################
@@ -85,28 +86,39 @@ sub modifystudent {
 sub modifyuserrole {
     my ($context,$setting,$changeauth,$cid,$udom,$uname,$uid,$umode,$upass,
         $first,$middle,$last,$gene,$sec,$forceid,$desiredhome,$email,$role,
-        $end,$start) = @_;
-    my ($scope,$userresult,$authresult,$roleresult);
+        $end,$start,$checkid) = @_;
+    my ($scope,$userresult,$authresult,$roleresult,$idresult);
     if ($setting eq 'course' || $context eq 'course') {
         $scope = '/'.$cid;
         $scope =~ s/\_/\//g;
         if ($role ne 'cc' && $sec ne '') {
             $scope .='/'.$sec;
         }
-    } elsif ($setting eq 'domain') {
+    } elsif ($context eq 'domain') {
         $scope = '/'.$env{'request.role.domain'}.'/';
-    } elsif ($setting eq 'construction_space') {
+    } elsif ($context eq 'construction_space') {
         $scope =  '/'.$env{'user.domain'}.'/'.$env{'user.name'};
     }
     if ($context eq 'domain') {
         my $uhome = &Apache::lonnet::homeserver($uname,$udom);
         if ($uhome ne 'no_host') {
-            if (($changeauth) && (&Apache::lonnet::allowed('mau',$udom))) {
+            if (($changeauth eq 'Yes') && (&Apache::lonnet::allowed('mau',$udom))) {
                 if ((($umode =~ /^krb4|krb5|internal$/) && $upass ne '') ||
                     ($umode eq 'localauth')) {
                     $authresult = &Apache::lonnet::modifyuserauth($udom,$uname,$umode,$upass);
                 }
             }
+            if (($forceid) && (&Apache::lonnet::allowed('mau',$udom)) &&
+                ($env{'form.recurseid'}) && ($checkid)) {
+                my %userupdate = (
+                                  lastname   => $last,
+                                  middlename => $middle,
+                                  firstname  => $first,
+                                  generation => $gene,
+                                  id         => $uid,
+                                 );
+                $idresult = &propagate_id_change($uname,$udom,\%userupdate);
+            }
         }
     }
     $userresult =
@@ -114,42 +126,127 @@ sub modifyuserrole {
                                     $middle,$last,$gene,$forceid,$desiredhome,
                                     $email,$role,$start,$end);
     if ($userresult eq 'ok') {
-        if ($role ne '') { 
+        if ($role ne '') {
             $roleresult = &Apache::lonnet::assignrole($udom,$uname,$scope,
                                                       $role,$end,$start);
         }
     }
-    return ($userresult,$authresult,$roleresult);
+    return ($userresult,$authresult,$roleresult,$idresult);
 }
 
+sub propagate_id_change {
+    my ($uname,$udom,$user) = @_;
+    my (@types,@roles,@cdoms);
+    @types = ('active','future');
+    @roles = ('st');
+    my $idresult;
+    my %roleshash = &Apache::lonnet::get_my_roles($uname,
+                        $udom,'userroles',\@types,\@roles,\@cdoms);
+    foreach my $item (keys(%roleshash)) {
+        my ($cnum,$cdom,$role) = split(/:/,$item);
+        my ($start,$end) = split(/:/,$roleshash{$item});
+        if (&Apache::lonnet::is_course($cdom,$cnum)) {
+            my %userupdate;
+            my $result = &update_classlist($cdom,$cnum,$udom,$uname,\%userupdate);
+            if ($result eq 'ok') {
+                $idresult .= "Classlist change: $uname:$udom - class -> $cnum:$cdom\n";
+            } else {
+                $idresult .= "Error - $result -during classlist update for $uname:$udom in $cnum:$cdom\n";
+            }
+        }
+    }
+    return $idresult;
+}
+
+sub update_classlist {
+    my ($cdom,$cnum,$udom,$uname,$user) = @_;
+    my ($uid,$classlistentry);
+    my $fullname =
+        &Apache::lonnet::format_name($user->{'firstname'},$user->{'middlename'},
+                                     $user->{'lastname'},$user->{'generation'},
+                                     'lastname');
+    my %classhash = &Apache::lonnet::get('classlist',[$uname.':'.$udom],
+                                         $cdom,$cnum);
+    my @classinfo = split(/:/,$classhash{$uname.':'.$udom});
+    my $ididx=&Apache::loncoursedata::CL_ID() - 2;
+    my $nameidx=&Apache::loncoursedata::CL_FULLNAME() - 2;
+    for (my $i=0; $i<@classinfo; $i++) {
+        if ($i == $ididx) {
+            if (defined($user->{'id'})) {
+                $classlistentry .= $user->{'id'}.':';
+            } else {
+                $classlistentry .= $classinfo[$i].':';
+            }
+        } elsif ($i == $nameidx) {
+            $classlistentry .= $fullname.':';
+        } else {
+            $classlistentry .= $classinfo[$i].':';
+        }
+    }
+    $classlistentry =~ s/:$//;
+    my $reply=&Apache::lonnet::cput('classlist',
+                                    {"$uname:$udom" => $classlistentry},
+                                    $cdom,$cnum);
+    if (($reply eq 'ok') || ($reply eq 'delayed')) {
+        return 'ok';
+    } else {
+        return 'error: '.$reply;
+    }
+}
+
+
 ###############################################################
 ###############################################################
-# build a domain and server selection form
-sub domain_form {
-    my ($defdom) = @_;
-    # Set up domain and server selection forms
+# build a role type and role selection form
+sub domain_roles_select {
+    # Set up the role type and role selection boxes when in 
+    # domain context   
+    #
+    # Role types
+    my @roletypes = ('domain','construction_space','course');
+    my %lt = &role_type_names();
     #
-    # Get the domains
-    my @domains = &Apache::lonnet::all_domains();
     # build up the menu information to be passed to
     # &Apache::loncommon::linked_select_forms
     my %select_menus;
-    foreach my $dom (@domains) {
+    if ($env{'form.roletype'} eq '') {
+        $env{'form.roletype'} = 'domain';
+    }
+    foreach my $roletype (@roletypes) {
         # set up the text for this domain
-        $select_menus{$dom}->{'text'}= $dom;
+        $select_menus{$roletype}->{'text'}= $lt{$roletype};
         # we want a choice of 'default' as the default in the second menu
-        $select_menus{$dom}->{'default'}= 'default';
-        $select_menus{$dom}->{'select2'}->{'default'} = 'default';
+        if ($env{'form.roletype'} ne '') {
+            $select_menus{$roletype}->{'default'} = $env{'form.showrole'};
+        } else { 
+            $select_menus{$roletype}->{'default'} = 'Any';
+        }
         # Now build up the other items in the second menu
-        my %servers = &Apache::lonnet::get_servers($dom,'library');
-        foreach my $server (keys(%servers)) {
-            $select_menus{$dom}->{'select2'}->{$server}
-                                            = "$server $servers{$server}";
+        my @roles;
+        if ($roletype eq 'domain') {
+            @roles = &domain_roles();
+        } elsif ($roletype eq 'construction_space') {
+            @roles = &construction_space_roles();
+        } else {
+            @roles = &course_roles('domain');
+            unshift(@roles,'cr');
+        }
+        my $order = ['Any',@roles];
+        $select_menus{$roletype}->{'order'} = $order; 
+        foreach my $role (@roles) {
+            if ($role eq 'cr') {
+                $select_menus{$roletype}->{'select2'}->{$role} =
+                              &mt('Custom role');
+            } else {
+                $select_menus{$roletype}->{'select2'}->{$role} = 
+                              &Apache::lonnet::plaintext($role);
+            }
         }
+        $select_menus{$roletype}->{'select2'}->{'Any'} = &mt('Any');
     }
-    my $result  = &Apache::loncommon::linked_select_forms
-        ('studentform',' with home server ',$defdom,
-         'lcdomain','lcserver',\%select_menus);
+    my $result = &Apache::loncommon::linked_select_forms
+        ('studentform',('&nbsp;'x3).&mt('Role: '),$env{'form.roletype'},
+         'roletype','showrole',\%select_menus,['domain','construction_space','course']);
     return $result;
 }
 
@@ -616,11 +713,15 @@ sub print_upload_manager_footer {
                 &mt('Role and/or section for users without one in the uploaded file.');
     }
     $Str .= '<br /><br />';
-    my ($options,$cb_script,$coursepick) = &default_role_selector($context);
+    my ($options,$cb_script,$coursepick) = &default_role_selector($context,'defaultrole',1);
     if ($context eq 'domain') {
         $Str .= '<span class="LC_role_level">'.&mt('Domain Level').'</span><br />'.$options.'<br /><br /><span class="LC_role_level">'.&mt('Course Level').'</span><br />'.$cb_script.$coursepick;
-    } else {
+    } elsif ($context eq 'construction_space') {
         $Str .= $options;
+    } else {
+        $Str .= '<table><tr><td><span class="LC_nobreak"<b>'.&mt('role').':&nbsp;</b>'.
+                $options.'</span></td><td>&nbsp;</td><td><span class="LC_nobreak">'.
+                '<b>'.&mt('section').':&nbsp;</b><input type="text" name="section" value="" size="12" /></span></td></tr></table>';
     }
     if ($context eq 'course') {
         $Str .= "<h3>".&mt('Full Update')."</h3>\n".
@@ -628,12 +729,9 @@ sub print_upload_manager_footer {
                 ' '.&mt('Full update (also print list of users not enrolled anymore)').
                 "</label></p>\n";
     }
-    $Str .= "<h3>".&mt('ID/Student Number')."</h3>\n";
-    $Str .= "<p>\n".'<label><input type="checkbox" name="forceid" value="yes">';
-    $Str .= &mt('Disable ID/Student Number Safeguard and Force Change '.
-                'of Conflicting IDs').
-                '</label><br />'."\n".
-                &mt('(only do if you know what you are doing.)')."</p><p>\n";
+    if ($context eq 'course' || $context eq 'domain') {
+        $Str .= &forceid_change($context);
+    }
     $Str .= '</div><div class="LC_clear_float_footer"><br /><input type="button"'.
               'onClick="javascript:verify(this.form,this.form.csec)" '.
         'value="Update Users" />'."<br />\n";
@@ -646,6 +744,23 @@ sub print_upload_manager_footer {
     return;
 }
 
+sub forceid_change {
+    my ($context) = @_;
+    my $output = 
+        "<h3>".&mt('ID/Student Number')."</h3>\n".
+        "<p>\n".'<label><input type="checkbox" name="forceid" value="yes">'.
+        &mt('Disable ID/Student Number Safeguard and Force Change '.
+        'of Conflicting IDs').'</label><br />'."\n".
+        &mt('(only do if you know what you are doing.)')."</br><br />\n";
+    if ($context eq 'domain') {
+        $output .= '<label><input type="checkbox" name="recurseid"'.
+                   ' value="yes">'. 
+  &mt('Update ID/Student Number in courses in which user is an Active or Future student, (if forcing change).').
+                   '</label></p>'."\n";
+    }
+    return $output;
+}
+
 ###############################################################
 ###############################################################
 sub print_upload_manager_form {
@@ -847,7 +962,7 @@ sub make_dates_default {
 }
 
 sub default_role_selector {
-    my ($context) = @_;
+    my ($context,$checkpriv) = @_;
     my %customroles;
     my ($options,$coursepick,$cb_jscript);
     if ($context ne 'construction_space') {
@@ -863,15 +978,15 @@ sub default_role_selector {
     $options = '<select name="defaultrole">'."\n".
                ' <option value="">'.&mt('Please select').'</option>'."\n"; 
     if ($context eq 'course') {
-        $options .= &default_course_roles($context,%customroles);
+        $options .= &default_course_roles($context,$checkpriv,%customroles);
     } elsif ($context eq 'construction_space') {
-        my @roles = &construction_space_roles();
+        my @roles = &construction_space_roles($checkpriv);
         foreach my $role (@roles) {
            my $plrole=&Apache::lonnet::plaintext($role);
            $options .= '  <option value="'.$role.'">'.$plrole.'</option>'."\n";
         }
     } elsif ($context eq 'domain') {
-        my @roles = &domain_roles();
+        my @roles = &domain_roles($checkpriv);
         foreach my $role (@roles) {
            my $plrole=&Apache::lonnet::plaintext($role);
            $options .= '  <option value="'.$role.'">'.$plrole.'</option>';
@@ -888,7 +1003,7 @@ sub default_role_selector {
                       &Apache::loncommon::start_data_table_row()."\n".
                       '<td><input type="text" name="defaultdesc" value="" onFocus="this.blur();opencrsbrowser('."'studentform','defcourse','defdomain','coursedesc',''".')" /></td>'."\n".
                       '<td><select name="courserole">'."\n".
-                      &default_course_roles($context,%customroles)."\n".
+                      &default_course_roles($context,$checkpriv,%customroles)."\n".
                       '</select></td><td>'.
                       '<table class="LC_createuser">'.
                       '<tr class="LC_section_row"><td valign"top">'.
@@ -910,14 +1025,15 @@ sub default_role_selector {
 }
 
 sub default_course_roles {
-    my ($context,%customroles) = @_;
+    my ($context,$checkpriv,%customroles) = @_;
     my $output;
-    my @roles = &course_roles($context);
+    my @roles = &course_roles($context,$checkpriv);
     foreach my $role (@roles) {
         my $plrole=&Apache::lonnet::plaintext($role);
         $output .= '  <option value="'.$role.'">'.$plrole.'</option>';
     }
     if (keys(%customroles) > 0) {
+        my %customroles = &my_custom_roles();
         foreach my $cust (sort(keys(%customroles))) {
             my $custrole='cr_cr_'.$env{'user.domain'}.
                 '_'.$env{'user.name'}.'_'.$cust;
@@ -928,47 +1044,61 @@ sub default_course_roles {
 }
 
 sub construction_space_roles {
+    my ($checkpriv) = @_;
     my @allroles = ('ca','aa');
     my @roles;
-    foreach my $role (@allroles) {
-        if (&Apache::lonnet::allowed('c'.$role,$env{'user.domain'}.'/'.$env{'user.name'})) { 
-            push(@roles,$role); 
+    if ($checkpriv) {
+        foreach my $role (@allroles) {
+            if (&Apache::lonnet::allowed('c'.$role,$env{'user.domain'}.'/'.$env{'user.name'})) { 
+                push(@roles,$role); 
+            }
         }
+        return @roles;
+    } else {
+        return @allroles;
     }
-    return @roles;
 }
 
 sub domain_roles {
+    my ($checkpriv) = @_;
     my @allroles = ('dc','li','dg','au','sc');
     my @roles;
-    foreach my $role (@allroles) {
-        if (&Apache::lonnet::allowed('c'.$role,$env{'request.role.domain'})) {
-            push(@roles,$role);
+    if ($checkpriv) {
+        foreach my $role (@allroles) {
+            if (&Apache::lonnet::allowed('c'.$role,$env{'request.role.domain'})) {
+                push(@roles,$role);
+            }
         }
+        return @roles;
+    } else {
+        return @allroles;
     }
-    return @roles;
 }
 
 sub course_roles {
-    my ($context) = @_;
+    my ($context,$checkpriv) = @_;
     my @allroles = ('st','ta','ep','in','cc');
     my @roles;
     if ($context eq 'domain') {
         @roles = @allroles;
     } elsif ($context eq 'course') {
         if ($env{'request.course.id'}) {
-            foreach my $role (@allroles) {
-                if (&Apache::lonnet::allowed('c'.$role,$env{'request.course.id'})) {
-                    push(@roles,$role);  
-                } else {
-                    if ($role ne 'cc' && $env{'request.course.section'} ne '') {
-                        if (!&Apache::lonnet::allowed('c'.$role,
-                                         $env{'request.course.id'}.'/'.
-                                         $env{'request.course.section'})) {
-                            push(@roles,$role);
+            if ($checkpriv) { 
+                foreach my $role (@allroles) {
+                    if (&Apache::lonnet::allowed('c'.$role,$env{'request.course.id'})) {
+                        push(@roles,$role);
+                    } else {
+                        if ($role ne 'cc' && $env{'request.course.section'} ne '') {
+                            if (!&Apache::lonnet::allowed('c'.$role,
+                                             $env{'request.course.id'}.'/'.
+                                             $env{'request.course.section'})) {
+                                push(@roles,$role);
+                            }
                         }
                     }
                 }
+            } else {
+                @roles = @allroles;
             }
         }
     }
@@ -976,18 +1106,18 @@ sub course_roles {
 }
 
 sub curr_role_permissions {
-    my ($context,$setting) = @_; 
+    my ($context,$setting,$checkpriv) = @_; 
     my @roles;
     if ($context eq 'construction_space') {
-        @roles = &construction_space_roles();
+        @roles = &construction_space_roles($checkpriv);
     } elsif ($context eq 'domain') {
         if ($setting eq 'course') {
-            @roles = &course_roles($context); 
+            @roles = &course_roles($context,$checkpriv); 
         } else {
-            @roles = &domain_roles();
+            @roles = &domain_roles($checkpriv);
         }
     } elsif ($context eq 'course') {
-        @roles = &course_roles($context);
+        @roles = &course_roles($context,$checkpriv);
     }
     return @roles;
 }
@@ -1005,49 +1135,45 @@ sub my_custom_roles {
     return %returnhash;
 }
 
-sub print_html_classlist {
-    my ($r,$mode,$permission,$context) = @_;
+sub print_userlist {
+    my ($r,$mode,$permission,$context,$formname,$totcodes,$codetitles,
+        $idlist,$idlist_titles) = @_;
+    my $format = $env{'form.output'};
     if (! exists($env{'form.sortby'})) {
         $env{'form.sortby'} = 'username';
     }
-    if ($env{'form.status'} !~ /^(Any|Expired|Active|Future)$/) {
-        $env{'form.status'} = 'Active';
+    if ($env{'form.Status'} !~ /^(Any|Expired|Active|Future)$/) {
+        $env{'form.Status'} = 'Active';
     }
     my $status_select = &Apache::lonhtmlcommon::StatusOptions
-        ($env{'form.status'});
+        ($env{'form.Status'});
 
+    if ($env{'form.showrole'} eq '') {
+        $env{'form.showrole'} = 'Any';
+    }
     if (! defined($env{'form.output'}) ||
         $env{'form.output'} !~ /^(csv|excel|html)$/ ) {
         $env{'form.output'} = 'html';
     }
 
-    if ($context eq 'course') { 
-        my $cid =$env{'request.course.id'};
-        my $cdom=$env{'course.'.$cid.'.domain'};
-        my $cnum=$env{'course.'.$cid.'.num'};
-        #
-        # List course personnel
-        my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
-        #
-
-        $r->print('<br />'.&Apache::loncommon::start_data_table());
-        foreach my $role (sort keys %coursepersonnel) {
-            next if ($role =~ /^\s*$/);
-            $r->print(&Apache::loncommon::start_data_table_row().
-                      '<td>'.$role.'</td><td>');
-            foreach my $user (split(',',$coursepersonnel{$role})) {
-                my ($puname,$pudom)=split(':',$user);
-                $r->print(' '.&Apache::loncommon::aboutmewrapper(
-                          &Apache::loncommon::plainname($puname,$pudom),
-                          $puname,$pudom));
-            }
-            $r->print('</td>'.&Apache::loncommon::end_data_table_row());
-        }
-        $r->print(&Apache::loncommon::end_data_table());
+    my @statuses;
+    if ($env{'form.Status'} eq 'Any') {
+        @statuses = ('previous','active','future');
+    } elsif ($env{'form.Status'} eq 'Expired') {
+        @statuses = ('previous');
+    } elsif ($env{'form.Status'} eq 'Active') {
+        @statuses = ('active');
+    } elsif ($env{'form.Status'} eq 'Future') {
+        @statuses = ('future');
     }
+
+#    if ($context eq 'course') { 
+#        $r->print(&display_adv_courseroles());
+#    }
     #
     # Interface output
-    $r->print('<input type="hidden" name="action" value="'.
+    $r->print('<form name="studentform" method="post" action="/adm/createuser">'."\n".
+              '<input type="hidden" name="action" value="'.
               $env{'form.action'}.'" />');
     $r->print("<p>\n");
     if ($env{'form.action'} ne 'modifystudent') {
@@ -1066,71 +1192,511 @@ sub print_html_classlist {
         $output_selector .= '</select>';
         $r->print('<label>'.&mt('Output Format: [_1]',$output_selector).'</label>'.('&nbsp;'x3));
     }
-    $r->print('<label>'.&mt('Student Status: [_1]',$status_select)."</label>\n");
-    $r->print('<input type="submit" value="'.&mt('Update Display').'" />'.
-              "\n</p>\n");
-
+    $r->print('<label>'.&mt('User Status: [_1]',$status_select).'</label>'.('&nbsp;'x3)."\n");
+    my $roleselected = '';
+    if ($env{'form.showrole'} eq 'Any') {
+       $roleselected = ' selected="selected" '; 
+    }
+    my $role_select;
+    if ($context eq 'domain') {
+        $role_select = &domain_roles_select();
+        $r->print('<label>'.&mt('Role Type: [_1]',$role_select).'</label>');
+    } else {
+        $role_select = '<select name="showrole">'."\n".
+                       '<option value="Any" '.$roleselected.'>'.
+                       &mt('Any role').'</option>';
+        my @poss_roles = &curr_role_permissions($context);
+        foreach my $role (@poss_roles) {
+            $roleselected = '';
+            if ($role eq $env{'form.showrole'}) {
+                $roleselected = ' selected="selected" ';
+            }
+            my $plrole=&Apache::lonnet::plaintext($role);
+            $role_select .= '<option value="'.$role.'"'.$roleselected.'>'.$plrole.'</option>';
+        }
+        $roleselected = '';
+        if ($env{'form.showrole'} eq 'cr') {
+            $roleselected = ' selected="selected" ';
+        }
+        $role_select .= '<option value="cr"'.$roleselected.'>'.&mt('Custom role').'</option>'.
+                        '</select>';
+        $r->print('<label>'.&mt('Role: [_1]',$role_select).'</label>');
+    }
+    if (!(($context eq 'domain') && ($env{'form.roletype'} eq 'course'))) {
+        $r->print(&list_submit_button(&mt('Update Display'))."\n</p>\n");
+    }
+    my ($indexhash,$keylist) = &make_keylist_array();
+    my (%userlist,%userinfo);
+    if ($context eq 'domain' && $env{'form.roletype'} eq 'course') {
+        my $courseform =
+            &Apache::lonhtmlcommon::course_selection($formname,$totcodes,
+                                         $codetitles,$idlist,$idlist_titles);
+        $r->print('<p>'.&Apache::lonhtmlcommon::start_pick_box()."\n".
+                  &Apache::lonhtmlcommon::start_pick_box()."\n".
+                  &Apache::lonhtmlcommon::row_title(&mt('Select Course(s)'),
+                                                    'LC_oddrow_value')."\n".
+                  $courseform."\n".
+                  &Apache::lonhtmlcommon::row_closure(1).
+                  &Apache::lonhtmlcommon::end_pick_box().'</p>'.
+                  '<p>'.&list_submit_button(&mt('Update Display')).
+                  "\n</p>\n");
+    }
+    $r->print('<hr />'.&mt('Searching').' ...<br />&nbsp;<br />');
+    $r->rflush();
     if ($context eq 'course') {
-        #
-        # Print the classlist
-        $r->print('<h2>'.&mt('Current Class List').'</h2>');
-        my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist();
-
-        if (exists($permission->{'view_section'})) {
-            my $sec = &Apache::loncoursedata::CL_SECTION();
-            foreach my $student (keys(%{$classlist})) {
-                if ($classlist->{$student}[$sec] ne $permission->{'view_section'}) {
-                    delete($classlist->{$student});
+        my $classlist = &Apache::loncoursedata::get_classlist();
+        my $secidx = &Apache::loncoursedata::CL_SECTION();
+        foreach my $student (keys(%{$classlist})) {
+            if (exists($permission->{'view_section'})) {
+                if ($classlist->{$student}[$secidx] ne $permission->{'view_section'}) {
+                    next;
+                } else {
+                    $userlist{$student} = $classlist->{$student};
                 }
+            } else {
+                $userlist{$student} = $classlist->{$student};
             }
         }
-
-        if (! defined($classlist)) {
-            $r->print(&mt('There are no students currently enrolled.')."\n");
+        my $cid =$env{'request.course.id'};
+        my $cdom=$env{'course.'.$cid.'.domain'};
+        my $cnum=$env{'course.'.$cid.'.num'};
+        my $showroles;
+        if ($env{'form.showrole'} ne 'Any') {
+            $showroles = [$env{'form.showrole'}];
         } else {
-            # Print out the available choices
-            if ($env{'form.action'} eq 'modifystudent') {
-                &show_users_list($r,$context,'view','modify',
-                                 $env{'form.Status'},$classlist,$keylist);
-            } else {
-                &show_users_list($r,$context,$env{'form.output'},'aboutme',
-                                 $env{'form.Status'},$classlist,$keylist);
+            $showroles = undef;
+        }
+        my %advrolehash = &Apache::lonnet::get_my_roles($cnum,$cdom,undef,
+                                                        \@statuses,$showroles);
+        &gather_userinfo($context,$format,\%userlist,$indexhash,\%userinfo,
+                         \%advrolehash);
+    } else {
+        my (%cstr_roles,%dom_roles);
+        if ($context eq 'construction_space') {
+            # List co-authors and assistant co-authors
+            my @possroles = ('ca','aa');
+            %cstr_roles = &Apache::lonnet::get_my_roles(undef,undef,undef,
+                                              \@statuses,\@possroles);
+            &gather_userinfo($context,$format,\%userlist,$indexhash,\%userinfo,
+                             \%cstr_roles);
+        } elsif ($context eq 'domain') {
+            if ($env{'form.roletype'} eq 'domain') {
+                %dom_roles = &Apache::lonnet::get_domain_roles($env{'request.role.domain'});
+                foreach my $key (keys(%dom_roles)) {
+                    if (ref($dom_roles{$key}) eq 'HASH') {
+                        &gather_userinfo($context,$format,\%userlist,$indexhash,
+                                         \%userinfo,$dom_roles{$key});
+                    }
+                }
+            } elsif ($env{'form.roletype'} eq 'construction_space') {
+                my %dom_roles = &Apache::lonnet::get_domain_roles($env{'request.role.domain'},['au']);
+                my %coauthors;
+                foreach my $key (keys(%dom_roles)) {
+                    if (ref($dom_roles{$key}) eq 'HASH') {
+                        if ($env{'form.showrole'} eq 'au') {
+                            &gather_userinfo($context,$format,\%userlist,$indexhash,
+                                             \%userinfo,$dom_roles{$key});
+                        } else {
+                            my @possroles;
+                            if ($env{'form.showrole'} eq 'Any') {
+                                @possroles = ('ca','aa');
+                            } else {
+                                @possroles = ($env{'form.showrole'}); 
+                            }
+                            foreach my $author (sort(keys(%{$dom_roles{$key}}))) {
+                                my ($role,$authorname,$authordom) = split(/:/,$author);
+                                my $extent = '/'.$authordom.'/'.$authorname;
+                                %{$coauthors{$extent}} =
+                                    &Apache::lonnet::get_my_roles($authorname,
+                                       $authordom,undef,\@statuses,\@possroles);
+                            }
+                            &gather_userinfo($context,$format,\%userlist,
+                                             $indexhash,\%userinfo,\%coauthors);
+                        }
+                    }
+                }
+            } elsif ($env{'form.roletype'} eq 'course') {
+                if ($env{'form.coursepick'}) {
+                    my %courses = &process_coursepick();
+                    my %allusers; 
+                    foreach my $cid (keys(%courses)) {
+                        my %coursehash =
+                            &Apache::lonnet::coursedescription($cid,{'one_time' => 1});
+                        my $cdom = $coursehash{'domain'};
+                        my $cnum = $coursehash{'num'};
+                        my $cdesc = $coursehash{'description'};
+                        my (@roles,@sections,%access,%users,%userdata,
+                            %statushash);
+                        if ($env{'form.showrole'} eq 'Any') {
+                            @roles = &course_roles($context);
+                            unshift(@roles,'cr');
+                        } else {
+                            @roles = ($env{'form.showrole'});
+                        }
+                        foreach my $role (@roles) {
+                            %{$users{$role}} = ();
+                        }
+                        foreach my $type (@statuses) {
+                            $access{$type} = $type;
+                        }
+                        &Apache::loncommon::get_course_users($cdom,$cnum,\%access,\@roles,\@sections,\%users,\%userdata,\%statushash);
+                        foreach my $user (keys(%userdata)) {
+                            next if (ref($userinfo{$user}) eq 'HASH');
+                            foreach my $item ('fullname','id') {
+                                $userinfo{$user}{$item} = $userdata{$user}[$indexhash->{$item}];
+                            }
+                        }
+                        foreach my $role (keys(%users)) {
+                            foreach my $user (keys(%{$users{$role}})) {
+                                my $uniqid = $user.':'.$role;
+                                $allusers{$uniqid}{$cid} = { desc => $cdesc,
+                                                             secs  => $statushash{$user}{$role},
+                                                           };
+                            }
+                        }
+                    }
+                    &gather_userinfo($context,$format,\%userlist,$indexhash,
+                                     \%userinfo,\%allusers);
+                } else {
+                    return;
+                }
             }
         }
-    } elsif ($context eq 'construction_space') {
-        # List co-authors and assistant co-authors
-        my @statuses;
-        if ($env{'form.status'} eq 'Any') {
-            @statuses = ('previous','active','future');
-        } elsif ($env{'form.status'} eq 'Expired') {
-            @statuses = ('previous');
-        } elsif ($env{'form.status'} eq 'Active') {
-            @statuses = ('active');
-        } elsif ($env{'form.status'} eq 'Future') {
-            @statuses = ('future');
-        }
-        my @possroles = ('ca','aa');
-        my %cstr_roles = &Apache::lonnet::get_my_roles(undef,undef,undef,
-                                          \@statuses,\@possroles);
-        if (keys(%cstr_roles) == 0) {
-             $r->print(&mt('There are no authors or co-authors.')."\n");
-        } else {
-            # Print out the available choices
-            if ($env{'form.action'} eq 'modifystudent') {
-                &show_users_list($r,$context,'view','modify',
-                                 $env{'form.Status'},\%cstr_roles);
-            } else {
-                &show_users_list($r,$context,$env{'form.output'},'aboutme',
-                                 $env{'form.Status'},\%cstr_roles);
+    }
+    if (keys(%userlist) == 0) {
+        if ($context eq 'construction_space') {
+            $r->print(&mt('There are no co-authors to display.')."\n");
+        } elsif ($context eq 'domain') {
+            if ($env{'form.roletype'} eq 'domain') {
+                $r->print(&mt('There are no users with domain roles to display.')."\n");
+            } elsif ($env{'form.roletype'} eq 'construction_space') {
+                $r->print(&mt('There are no authors or co-authors to display.')."\n");
+            } elsif ($env{'form.roletype'} eq 'course') {
+                $r->print(&mt('There are no course users to display')."\n"); 
             }
+        } elsif ($context eq 'course') {
+            $r->print(&mt('There are no course users to display.')."\n");
         }
     } else {
+        # Print out the available choices
+        my $usercount;
+        if ($env{'form.action'} eq 'modifystudent') {
+            ($usercount) = &show_users_list($r,$context,'view','modify',
+                                 $env{'form.Status'},\%userlist,$keylist);
+        } else {
+            ($usercount) = &show_users_list($r,$context,$env{'form.output'},
+                               'aboutme',$env{'form.Status'},\%userlist,$keylist);
+        }
+        if (!$usercount) {
+            $r->print('<br />'.&mt('There are no users matching the search criteria.')); 
+        }
+    }
+    $r->print('</form>');
+}
+
+sub list_submit_button {
+    my ($text) = @_;
+    return '<input type="submit" value="'.$text.'" />';
+}
+
+sub gather_userinfo {
+    my ($context,$format,$userlist,$indexhash,$userinfo,$rolehash) = @_;
+    foreach my $item (keys(%{$rolehash})) {
+        @{$userlist->{$item}} = ();
+        my %userdata;
+        if ($context eq 'construction_space' || $context eq 'course') { 
+            ($userdata{'username'},$userdata{'domain'},$userdata{'role'}) =
+                split(/:/,$item);
+            ($userdata{'start'},$userdata{'end'})=split(/:/,$rolehash->{$item});
+            &build_user_record(\%userdata,$userinfo,$indexhash,$item,$userlist);
+        } elsif ($context eq 'domain') {
+            if ($env{'form.roletype'} eq 'domain') {
+                ($userdata{'role'},$userdata{'username'},$userdata{'domain'}) =
+                    split(/:/,$item);
+                ($userdata{'end'},$userdata{'start'})=split(/:/,$rolehash->{$item});
+                &build_user_record(\%userdata,$userinfo,$indexhash,$item,$userlist);
+            } elsif ($env{'form.roletype'} eq 'construction_space') {
+                if (ref($rolehash->{$item}) eq 'HASH') {
+                    $userdata{'extent'} = $item;
+                    foreach my $key (keys(%{$rolehash->{$item}})) {
+                        ($userdata{'username'},$userdata{'domain'},$userdata{'role'}) =  split(/:/,$key);
+                        ($userdata{'start'},$userdata{'end'}) = 
+                            split(/:/,$rolehash->{$item}{$key});
+                        my $uniqid = $key.':'.$item;
+                        &build_user_record(\%userdata,$userinfo,$indexhash,$uniqid,$userlist);
+                    }
+                }
+            } elsif ($env{'form.roletype'} eq 'course') {
+                ($userdata{'username'},$userdata{'domain'},$userdata{'role'}) =
+                    split(/:/,$item);
+                if (ref($rolehash->{$item}) eq 'HASH') {
+                    foreach my $cid (sort(keys(%{$rolehash->{$item}}))) {
+                        if (ref($rolehash->{$item}{$cid}) eq 'HASH') {
+                            my $spanstart = '';
+                            my $spanend = '; ';
+                            my $space = ', ';
+                            if ($format eq 'html' || $format eq 'view') {
+                                $spanstart = '<span class="LC_nobreak">';
+                                $spanend = '</span><br />';
+                                $space = ',&nbsp;';
+                            }
+                            $userdata{'extent'} .= $spanstart.
+                                    $rolehash->{$item}{$cid}{'desc'}.$space;
+                            if (ref($rolehash->{$item}{$cid}{'secs'}) eq 'HASH') { 
+                                foreach my $sec (sort(keys(%{$rolehash->{$item}{$cid}{'secs'}}))) {
+                                    $userdata{'extent'} .= $sec.$space.$rolehash->{$item}{$cid}{'secs'}{$sec}.$spanend;
+                                }
+                            }
+                        }
+                    }
+                }
+                &build_user_record(\%userdata,$userinfo,$indexhash,$item,$userlist);
+            }
+        }
+    }
+    return;
+}
+
+sub build_user_record {
+    my ($userdata,$userinfo,$indexhash,$record_key,$userlist) = @_;
+    &process_date_info($userdata);
+    my $username = $userdata->{'username'};
+    my $domain = $userdata->{'domain'};
+    if (ref($userinfo->{$username.':'.$domain}) eq 'HASH') {
+        $userdata->{'fullname'} =
+        $userinfo->{$username.':'.$domain}{'fullname'};
+        $userdata->{'id'} = $userinfo->{$username.':'.$domain}{'id'};
+    } else {
+        &aggregate_user_info($domain,$username,$userinfo);
+        $userdata->{'fullname'} = $userinfo->{$username.':'.$domain}{'fullname'};
+        $userdata->{'id'} = $userinfo->{$username.':'.$domain}{'id'};
+    }
+    foreach my $key (keys(%{$indexhash})) {
+        if (defined($userdata->{$key})) {
+            $userlist->{$record_key}[$indexhash->{$key}] = $userdata->{$key};
+        }
+    }
+    return;
+}
 
+sub courses_selector {
+    my ($cdom,$formname) = @_;
+    my %coursecodes = ();
+    my %codes = ();
+    my @codetitles = ();
+    my %cat_titles = ();
+    my %cat_order = ();
+    my %idlist = ();
+    my %idnums = ();
+    my %idlist_titles = ();
+    my $caller = 'global';
+    my $format_reply;
+    my $jscript = '';
+
+    my $totcodes = 0;
+    $totcodes =
+        &Apache::courseclassifier::retrieve_instcodes(\%coursecodes,
+                                                      $cdom,$totcodes);
+    if ($totcodes > 0) {
+        $format_reply =
+             &Apache::lonnet::auto_instcode_format($caller,$cdom,\%coursecodes,
+                                \%codes,\@codetitles,\%cat_titles,\%cat_order);
+        if ($format_reply eq 'ok') {
+            my $numtypes = @codetitles;
+            &Apache::courseclassifier::build_code_selections(\%codes,\@codetitles,\%cat_titles,\%cat_order,\%idlist,\%idnums,\%idlist_titles);
+            my ($scripttext,$longtitles) = &Apache::courseclassifier::javascript_definitions(\@codetitles,\%idlist,\%idlist_titles,\%idnums,\%cat_titles);
+            my $longtitles_str = join('","',@{$longtitles});
+            my $allidlist = $idlist{$codetitles[0]};
+            $jscript .= &Apache::courseclassifier::courseset_js_start($formname,$longtitles_str,$allidlist);
+            $jscript .= $scripttext;
+            $jscript .= &Apache::courseclassifier::javascript_code_selections($formname,@codetitles);
+        }
+    }
+    my $cb_jscript = &Apache::loncommon::coursebrowser_javascript($cdom);
+
+    my %elements = (
+                     Year => 'selectbox',
+                     coursepick => 'radio',
+                     coursetotal => 'text',
+                     courselist => 'text',
+                   );
+    $jscript .= &Apache::lonhtmlcommon::set_form_elements(\%elements);
+    if ($env{'form.coursepick'} eq 'category') {
+        $jscript .= qq|
+function setCourseCat(formname) {
+    if (formname.Year.options[formname.Year.selectedIndex].value == -1) {
+        return;
+    }
+    courseSet('Year');
+    for (var j=0; j<formname.Semester.length; j++) {
+        if (formname.Semester.options[j].value == "$env{'form.Semester'}") {
+            formname.Semester.options[j].selected = true;
+        }
+    }
+    if (formname.Semester.options[formname.Semester.selectedIndex].value == -1) {
+        return;
+    }
+    courseSet('Semester');
+    for (var j=0; j<formname.Department.length; j++) {
+        if (formname.Department.options[j].value == "$env{'form.Department'}") {            formname.Department.options[j].selected = true;
+        }
+    }
+    if (formname.Department.options[formname.Department.selectedIndex].value == -1) {
+        return;
+    }
+    courseSet('Department');
+    for (var j=0; j<formname.Number.length; j++) {
+        if (formname.Number.options[j].value == "$env{'form.Number'}") {
+            formname.Number.options[j].selected = true;
+        }
     }
 }
+|;
+    }
+    return ($cb_jscript,$jscript,$totcodes,\@codetitles,\%idlist,
+            \%idlist_titles);
+}
+
+sub course_selector_loadcode {
+    my ($formname) = @_;
+    my $loadcode;
+    if ($env{'form.coursepick'} ne '') {
+        $loadcode = 'javascript:setFormElements(document.'.$formname.')';
+        if ($env{'form.coursepick'} eq 'category') {
+            $loadcode .= ';javascript:setCourseCat(document.'.$formname.')';
+        }
+    }
+    return $loadcode;
+}
+
+sub process_coursepick {
+    my $coursefilter = $env{'form.coursepick'};
+    my $cdom = $env{'request.role.domain'};
+    my %courses;
+    if ($coursefilter eq 'all') {
+        %courses = &Apache::lonnet::courseiddump($cdom,'.','.','.','.','.',
+                                                 undef,undef,'Course');
+    } elsif ($coursefilter eq 'category') {
+        my $instcode = &instcode_from_coursefilter();
+        %courses = &Apache::lonnet::courseiddump($cdom,'.','.',$instcode,'.','.',
+                                                 undef,undef,'Course');
+    } elsif ($coursefilter eq 'specific') {
+        if ($env{'form.coursetotal'} > 1) {
+            my @course_ids = split(/&&/,$env{'form.courselist'});
+            foreach my $cid (@course_ids) {
+                $courses{$cid} = '';
+            }
+        } else {
+            $courses{$env{'form.courselist'}} = '';
+        }
+    }
+    return %courses;
+}
+
+sub instcode_from_coursefilter {
+    my $instcode = '';
+    my @cats = ('Semester','Year','Department','Number');
+    foreach my $category (@cats) {
+        if (defined($env{'form.'.$category})) {
+            unless ($env{'form.'.$category} eq '-1') {
+                $instcode .= $env{'form.'.$category};
+           }
+        }
+    }
+    if ($instcode eq '') {
+        $instcode = '.';
+    }
+    return $instcode;
+}
+
+sub display_adv_courseroles {
+    my $output;
+    #
+    # List course personnel
+    my %coursepersonnel = 
+       &Apache::lonnet::get_course_adv_roles($env{'request.course.id'});
+    #
+    $output = '<br />'.&Apache::loncommon::start_data_table();
+    foreach my $role (sort(keys(%coursepersonnel))) {
+        next if ($role =~ /^\s*$/);
+        $output .= &Apache::loncommon::start_data_table_row().
+                  '<td>'.$role.'</td><td>';
+        foreach my $user (split(',',$coursepersonnel{$role})) {
+            my ($puname,$pudom)=split(':',$user);
+            $output .= ' '.&Apache::loncommon::aboutmewrapper(
+                       &Apache::loncommon::plainname($puname,$pudom),
+                       $puname,$pudom);
+        }
+        $output .= '</td>'.&Apache::loncommon::end_data_table_row();
+    }
+    $output .= &Apache::loncommon::end_data_table();
+}
+
+sub make_keylist_array {
+    my ($index,$keylist);
+    $index->{'domain'} = &Apache::loncoursedata::CL_SDOM();
+    $index->{'username'} = &Apache::loncoursedata::CL_SNAME();
+    $index->{'end'} = &Apache::loncoursedata::CL_END();
+    $index->{'start'} = &Apache::loncoursedata::CL_START();
+    $index->{'id'} = &Apache::loncoursedata::CL_ID();
+    $index->{'section'} = &Apache::loncoursedata::CL_SECTION();
+    $index->{'fullname'} = &Apache::loncoursedata::CL_FULLNAME();
+    $index->{'status'} = &Apache::loncoursedata::CL_STATUS();
+    $index->{'type'} = &Apache::loncoursedata::CL_TYPE();
+    $index->{'lockedtype'} = &Apache::loncoursedata::CL_LOCKEDTYPE();
+    $index->{'groups'} = &Apache::loncoursedata::CL_GROUP();
+    $index->{'email'} = &Apache::loncoursedata::CL_PERMANENTEMAIL();
+    $index->{'role'} = &Apache::loncoursedata::CL_ROLE();
+    $index->{'extent'} = &Apache::loncoursedata::CL_EXTENT();
+    foreach my $key (keys(%{$index})) {
+        $keylist->[$index->{$key}] = $key;
+    }
+    return ($index,$keylist);
+}
+
+sub aggregate_user_info {
+    my ($udom,$uname,$userinfo) = @_;
+    my %info=&Apache::lonnet::get('environment',
+                                  ['firstname','middlename',
+                                   'lastname','generation','id'],
+                                   $udom,$uname);
+    my ($tmp) = keys(%info);
+    my ($fullname,$id);
+    if ($tmp =~/^(con_lost|error|no_such_host)/i) {
+        $fullname = 'not available';
+        $id = 'not available';
+        &Apache::lonnet::logthis('unable to retrieve environment '.
+                                 'for '.$uname.':'.$udom);
+    } else {
+        $fullname = &Apache::lonnet::format_name(@info{qw/firstname middlename lastname generation/},'lastname');
+        $id = $info{'id'};
+    }
+    $userinfo->{$uname.':'.$udom} = { 
+                                      fullname => $fullname,
+                                      id       => $id,
+                                    };
+    return;
+}
+
+sub process_date_info {
+    my ($userdata) = @_;
+    my $now = time;
+    $userdata->{'status'} = 'Active';
+    if ($userdata->{'start'} > 0) {
+        if ($now < $userdata->{'start'}) {
+            $userdata->{'status'} = 'Future';
+        }
+    }
+    if ($userdata->{'end'} > 0) {
+        if ($now > $userdata->{'end'}) {
+            $userdata->{'status'} = 'Expired';
+        }
+    }
+    return;
+}
 
 sub show_users_list {
-    my ($r,$context,$mode,$linkto,$statusmode,$classlist,$keylist)=@_;
+    my ($r,$context,$mode,$linkto,$statusmode,$userlist,$keylist)=@_;
     #
     # Variables for excel output
     my ($excel_workbook, $excel_sheet, $excel_filename,$row,$format);
@@ -1139,16 +1705,22 @@ sub show_users_list {
     my ($CSVfile,$CSVfilename);
     #
     my $sortby = $env{'form.sortby'};
-    if ($sortby !~ /^(username|domain|section|groups|fullname|id|start|end|type)$/) {
+    my @sortable = ('username','domain','id','fullname','start','end','email','role');
+    if ($context eq 'course') {
+        push(@sortable,('section','groups','type'));
+    } else {
+        push(@sortable,'extent');
+    }
+    if (!grep(/^\Q$sortby\E$/,@sortable)) {
         $sortby = 'username';
     }
-    my ($cid,$cdom,$cnum,$classgroups,$displayphotos,$displayclickers)=@_;
+    my ($cid,$cdom,$cnum,$classgroups,$displayphotos,$displayclickers);
     if ($context eq 'course') {
         $cid=$env{'request.course.id'};
         $cdom = $env{'course.'.$cid.'.domain'};
         $cnum = $env{'course.'.$cid.'.num'};
-        $classgroups = &Apache::loncoursedata::get_group_memberships(
-                                     $classlist,$keylist,$cdom,$cnum);
+        ($classgroups) = &Apache::loncoursedata::get_group_memberships(
+                                     $userlist,$keylist,$cdom,$cnum);
         if (! exists($env{'form.displayphotos'})) {
             $env{'form.displayphotos'} = 'off';
         }
@@ -1194,17 +1766,34 @@ END
                        'start'      => "start date",
                        'end'        => "end date",
                        'status'     => "status",
+                       'role'       => "role",
                        'type'       => "enroll type/action",
                        'email'      => "email address",
                        'clicker'    => "clicker id",
                        'photo'      => "photo",
+                       'extent'     => "extent",
                       );
+    if ($context eq 'domain' && $env{'form.roletype'} eq 'course') {
+        $lt{'extent'} = &mt('Course(s): description, section(s), status');
+    } elsif ($context eq 'construction_space') {
+        $lt{'extent'} = &mt('Author'); 
+    }
     my @cols = ('username','domain','id','fullname');
     if ($context eq 'course') {
         push(@cols,'section');
     }
-    push(@cols,('start','end'));
-    if ($statusmode eq 'Any') {
+    if (!($context eq 'domain' && $env{'form.roletype'} eq 'course')) { 
+        push(@cols,('start','end'));
+    }
+    if ($env{'form.showrole'} eq 'Any' || $env{'form.showrole'} eq 'cr') {
+        push(@cols,'role');
+    }
+    if ($context eq 'domain' && ($env{'form.roletype'} eq 'construction_space' ||
+                                $env{'form.roletype'} eq 'course')) {
+        push (@cols,'extent');
+    }
+    if (($statusmode eq 'Any') && 
+        (!($context eq 'domain' && $env{'form.roletype'} eq 'course'))) {
         push(@cols,'status');
     }
     if ($context eq 'course') {
@@ -1212,74 +1801,85 @@ END
     }
     push(@cols,'email');
 
+    my $rolefilter = $env{'form.showrole'};
+    if ($env{'form.showrole'} eq 'cr') {
+        $rolefilter = &mt('custom');  
+    } elsif ($env{'form.showrole'} ne 'Any') {
+        $rolefilter = &Apache::lonnet::plaintext($env{'form.showrole'});
+    }
+    my $results_description = &results_header_row($rolefilter,$statusmode,
+                                                  $context);
+    $r->print('<b>'.$results_description.'</b><br />');
+    my $output;
     if ($mode eq 'html' || $mode eq 'view') {
-        if ($linkto eq 'aboutme') {
-            $r->print(&mt("Select a user name to view the user's personal page."));
-        } elsif ($linkto eq 'modify') {
-            $r->print(&mt("Select a user name to modify the user's information"));
-        }
         $r->print(<<END);
 <input type="hidden" name="sname"  value="" />
 <input type="hidden" name="sdom"   value="" />
 END
-
-        $r->print("\n<p>\n".
+        if ($linkto eq 'aboutme') {
+            $output = &mt("Select a user name to view the user's personal page.");
+        } elsif ($linkto eq 'modify') {
+            $output = &mt("Select a user name to modify the user's information");
+        }
+        $output .= "\n<p>\n".
                   &Apache::loncommon::start_data_table().
-                  &Apache::loncommon::start_data_table_header_row());
+                  &Apache::loncommon::start_data_table_header_row();
         if ($mode eq 'autoenroll') {
-            $r->print("
+            $output .= "
  <th><a href=\"javascript:document.studentform.sortby.value='type';document.studentform.submit();\">$lt{'type'}</a></th>
-            ");
+            ";
         } else {
-            $r->print("
+            $output .= "
 <th>Count</th>
-            ");
+            ";
         }
         foreach my $item (@cols) {
-            $r->print('<th><a href="javascript:document.studentform.sortby.value='.$item.';document.studentform.submit();">'.$lt{$item}.'</a></th>'."\n");
+            $output .= "<th><a href=\"javascript:document.studentform.sortby.value='$item';document.studentform.submit();\">$lt{$item}</a></th>\n";
         }
+        my %role_types = &role_type_names();
         if ($context eq 'course') {
-            # Clicker display on or off?
-            my %clicker_options = &Apache::lonlocal::texthash(
-                                                        'on' => 'Show',
-                                                        'off' => 'Hide',
-                                                       );
-            my $clickerchg = 'on';
-            if ($displayclickers eq 'on') {
-                $clickerchg = 'off';
-            }
-            $r->print('    <th>'."\n".'     '.
-                '<a href="javascript:document.studentform.displayclickers.value='.
+            if ($env{'form.showrole'} eq 'st' || $env{'form.showrole'} eq 'Any') {
+                # Clicker display on or off?
+                my %clicker_options = &Apache::lonlocal::texthash(
+                                                            'on' => 'Show',
+                                                            'off' => 'Hide',
+                                                           );
+                my $clickerchg = 'on';
+                if ($displayclickers eq 'on') {
+                    $clickerchg = 'off';
+                }
+                $output .= '    <th>'."\n".'     '.
+                    '<a href="javascript:document.studentform.displayclickers.value='.
                       "'".$clickerchg."'".';document.studentform.submit();">'.
                       $clicker_options{$clickerchg}.'</a>&nbsp;'.$lt{'clicker'}."\n".
-                      '    </th>'."\n");
+                      '    </th>'."\n";
 
-            # Photo display on or off?
-            if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
-                my %photo_options = &Apache::lonlocal::texthash(
-                                                        'on' => 'Show',
-                                                        'off' => 'Hide',
-                                                            );
-                my $photochg = 'on';
-                if ($displayphotos eq 'on') {
-                    $photochg = 'off';
-                }
-                $r->print('    <th>'."\n".'     '.
-            '<a href="javascript:document.studentform.displayphotos.value='.
+                # Photo display on or off?
+                if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
+                    my %photo_options = &Apache::lonlocal::texthash(
+                                                            'on' => 'Show',
+                                                            'off' => 'Hide',
+                                                                );
+                    my $photochg = 'on';
+                    if ($displayphotos eq 'on') {
+                        $photochg = 'off';
+                    }
+                    $output .= '    <th>'."\n".'     '.
+                '<a href="javascript:document.studentform.displayphotos.value='.
                       "'".$photochg."'".';document.studentform.submit();">'.
                       $photo_options{$photochg}.'</a>&nbsp;'.$lt{'photo'}."\n".
-                      '    </th>'."\n");
+                      '    </th>'."\n";
+                }
             }
-            $r->print(&Apache::end_data_table_header_row());
-        } 
+            $output .= &Apache::loncommon::end_data_table_header_row();
+        }
 # Done with the HTML header line
-
     } elsif ($mode eq 'csv') {
         #
         # Open a file
         $CSVfilename = '/prtspool/'.
-            $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
-            time.'_'.rand(1000000000).'.csv';
+                       $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
+                       time.'_'.rand(1000000000).'.csv';
         unless ($CSVfile = Apache::File->new('>/home/httpd'.$CSVfilename)) {
             $r->log_error("Couldn't open $CSVfilename for output $!");
             $r->print("Problems occured in writing the csv file.  ".
@@ -1289,11 +1889,7 @@ END
         }
         #
         # Write headers and data to file
-        if($statusmode eq 'Expired') {
-            print $CSVfile '"'.&mt('Users with expired roles').'"'."\n";        }
-        if($statusmode eq 'Future') {
-            print $CSVfile '"'.&mt('Users with future roles').'"'."\n";
-        }
+        print $CSVfile '"'.$results_description.'"'."\n"; 
         print $CSVfile '"'.join('","',map {
             &Apache::loncommon::csv_translate($lt{$_})
             } (@cols)).'"'."\n";
@@ -1303,18 +1899,7 @@ END
             &Apache::loncommon::create_workbook($r);
         return if (! defined($excel_workbook));
         $excel_sheet = $excel_workbook->addworksheet('userlist');
-        #
-        my $description;
-        if ($context eq 'course') {
-            $description = &mt('Class List for ').
-                $env{'course.'.$env{'request.course.id'}.'.description'};
-        } elsif ($context eq 'construction_space') {
-            $description = &mt('List of co-authors for construction space for [_1]',
-                           &Apache::loncommon::plainname($env{'user.name'},$env{'user.domain'}));
-        } else {
-            $description = &mt('List of users for domain: [_1]',&Apache::lonnet::domain($env{'request.role.domain'},'description'));
-        }
-        $excel_sheet->write($row++,0,$description,$format->{'h1'});
+        $excel_sheet->write($row++,0,$results_description,$format->{'h2'});
         #
         my @colnames = map {$lt{$_}} (@cols);
         $excel_sheet->write($row++,0,\@colnames,$format->{'bold'});
@@ -1322,84 +1907,304 @@ END
 
 # Done with header lines in all formats
 
-    #
-    # Sort the users
     my %index;
     my $i;
-    foreach (@$keylist) {
-        $index{$_} = $i++;
+    foreach my $idx (@$keylist) {
+        $index{$idx} = $i++;
+    }
+    my $usercount = 0;
+    # Get groups, role, permanent e-mail so we can sort on them if
+    # necessary.
+    foreach my $user (keys(%{$userlist})) {
+        my ($uname,$udom,$role,$groups,$email);
+        if (($statusmode ne 'Any') && 
+                 ($userlist->{$user}->[$index{'status'}] ne $statusmode)) {
+            delete($userlist->{$user});
+            next;
+        }
+        if ($context eq 'domain') {
+            if ($env{'form.roletype'} eq 'domain') {
+                ($role,$uname,$udom) = split(/:/,$user);
+               
+            } elsif ($env{'form.roletype'} eq 'construction_space') {
+                ($uname,$udom,$role) = split(/:/,$user,-1);
+            } elsif ($env{'form.roletype'} eq 'course') {
+                ($uname,$udom,$role) = split(/:/,$user);
+            }
+        } else {
+            ($uname,$udom,$role) = split(/:/,$user,-1);
+            if (($context eq 'course') && $role eq '') {
+                $role = 'st';
+            }
+        }
+        $userlist->{$user}->[$index{'role'}] = $role;
+        if (($env{'form.showrole'} ne 'Any') && (!($env{'form.showrole'}  eq 'cr' && $role =~ /^cr\//)) && ($role ne $env{'form.showrole'})) {
+            delete($userlist->{$user});
+            next;
+        }
+        if (ref($classgroups) eq 'HASH') {
+            $groups = $classgroups->{$user};
+        }
+        if (ref($groups->{active}) eq 'HASH') {
+            $userlist->{$user}->[$index{'groups'}] = join(', ',keys(%{$groups->{'active'}}));
+        }
+        my %emails   = &Apache::loncommon::getemails($uname,$udom);
+        if ($emails{'permanentemail'} =~ /\S/) {
+            $userlist->{$user}->[$index{'email'}] = $emails{'permanentemail'};
+        }
+        $usercount ++;
     }
-    $index{'groups'} = scalar(@$keylist);
-    my $index  = $index{$sortby};
-    my $second = $index{'username'};
-    my $third  = $index{'domain'};
-    my @Sorted_Students = sort {
-        lc($classlist->{$a}->[$index])  cmp lc($classlist->{$b}->[$index])
-            ||
-        lc($classlist->{$a}->[$second]) cmp lc($classlist->{$b}->[$second])            ||
-        lc($classlist->{$a}->[$third]) cmp lc($classlist->{$b}->[$third])
-        } (keys(%$classlist));
-    my $studentcount = 0;
     my $autocount = 0;
     my $manualcount = 0;
-    my $unlockcount = 0;
     my $lockcount = 0;
-    foreach my $student (@Sorted_Students) {
-        my $sdata = $classlist->{$student};
-        my $groups = $classgroups->{$student};
-        my $username = $sdata->[$index{'username'}];
-        my $domain   = $sdata->[$index{'domain'}];
-        my $section  = $sdata->[$index{'section'}];
-        my $active_groups;
-        if (ref($groups->{active}) eq 'HASH') {
-            $active_groups = join(', ',keys(%{$groups->{'active'}}));
+    my $unlockcount = 0;
+    if ($usercount) {
+        $r->print($output);
+    } else {
+        if ($mode eq 'autoenroll') {
+            return ($usercount,$autocount,$manualcount,$lockcount,$unlockcount);
+        } else {
+            return;
         }
-        my $name     = $sdata->[$index{'fullname'}];
-        my $id       = $sdata->[$index{'id'}];
-        my $status   = $sdata->[$index{'status'}];
-        next if (($statusmode ne 'Any') && ($status ne $statusmode));
-        my $start    = $sdata->[$index{'start'}];
-        my $end      = $sdata->[$index{'end'}];
-        if (! defined($start) || $start == 0) {
-            $start = &mt('none');
+    }
+    #
+    # Sort the users
+    my $index  = $index{$sortby};
+    my $second = $index{'username'};
+    my $third  = $index{'domain'};
+    my @sorted_users = sort {
+        lc($userlist->{$a}->[$index])  cmp lc($userlist->{$b}->[$index])
+            ||
+        lc($userlist->{$a}->[$second]) cmp lc($userlist->{$b}->[$second])            ||
+        lc($userlist->{$a}->[$third]) cmp lc($userlist->{$b}->[$third])
+        } (keys(%$userlist));
+    my $rowcount = 0;
+    foreach my $user (@sorted_users) {
+        my %in;
+        my $sdata = $userlist->{$user};
+        $rowcount ++; 
+        foreach my $item (@{$keylist}) {
+            $in{$item} = $sdata->[$index{$item}];
+        }
+        $in{'role'}=&Apache::lonnet::plaintext($sdata->[$index{'role'}]); 
+        if (! defined($in{'start'}) || $in{'start'} == 0) {
+            $in{'start'} = &mt('none');
         } else {
-            $start = &Apache::lonlocal::locallocaltime($start);
+            $in{'start'} = &Apache::lonlocal::locallocaltime($in{'start'});
         }
-        if (! defined($end) || $end == 0) {
-            $end = &mt('none');
+        if (! defined($in{'end'}) || $in{'end'} == 0) {
+            $in{'end'} = &mt('none');
         } else {
-            $end = &Apache::lonlocal::locallocaltime($end);
+            $in{'end'} = &Apache::lonlocal::locallocaltime($in{'end'});
+        }
+        if ($mode eq 'view' || $mode eq 'html' || $mode eq 'autoenroll') {
+            $r->print(&Apache::loncommon::start_data_table_row());
+            $r->print("<td>$rowcount</td>\n");
+            if ($linkto eq 'aboutme') {
+                $in{'username'} = 
+                    &Apache::loncommon::aboutmewrapper($in{'username'},
+                                                       $in{'username'},
+                                                       $in{'domain'});
+            } elsif ($linkto eq 'modify') {
+                $in{'username'} = '<a href="'.
+                          "javascript:document.studentform.sname.value='".
+                           $in{'username'}.
+                           "';document.studentform.sdom.value='".$in{'domain'}.
+                           "';document.studentform.state.value='selected".
+                           "';document.studentform.submit();".'">'.
+                           $in{'username'}."</a>\n";
+            }
+            foreach my $item (@cols) {
+                $r->print('<td>'.$in{$item}.'</td>'."\n");
+            }
+            if ($context eq 'course') {
+                if ($env{'form.showrole'} eq 'st' || $env{'form.showrole'} eq 'Any') {
+                    if ($displayclickers eq 'on') {
+                        my $clickers =
+                   (&Apache::lonnet::userenvironment($in{'domain'},$in{'username'},'clickers'))[1];
+                        if ($clickers!~/\w/) { $clickers='-'; }
+                        $r->print('<td>'.$clickers.'</td>');
+                    } else {
+                        $r->print('    <td>&nbsp;</td>  ');
+                    }
+                    if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
+                        if ($displayphotos eq 'on' && $sdata->[$index{'role'}] eq 'st') {
+                            my $imgurl =
+                        &Apache::lonnet::retrievestudentphoto($in{'domain'},$in{'username'},
+                                                          'gif','thumbnail');
+                            $r->print('    <td align="right"><a href="javascript:photowindow('."'".&Apache::lonnet::studentphoto($in{'domain'},$in{'username'},'jpg')."'".')"><img src="'.$imgurl.'" border="1"></a></td>');
+                        } else {
+                            $r->print('    <td>&nbsp;</td>  ');
+                        }
+                    }
+                }
+            }
+            $r->print(&Apache::loncommon::end_data_table_row());
+        } elsif ($mode eq 'csv') {
+            next if (! defined($CSVfile));
+            # no need to bother with $linkto
+            if (! defined($in{'start'}) || $in{'start'} == 0) {
+                $in{'start'} = &mt('none');
+            } else {
+                $in{'start'} = &Apache::lonlocal::locallocaltime($in{'start'});
+            }
+            if (! defined($in{'end'}) || $in{'end'} == 0) {
+                $in{'end'} = &mt('none');
+            } else {
+                $in{'end'} = &Apache::lonlocal::locallocaltime($in{'end'});
+            }
+            my @line = ();
+            foreach my $item (@cols) {
+                push @line,&Apache::loncommon::csv_translate($in{$item});
+            }
+            print $CSVfile '"'.join('","',@line).'"'."\n";
+        } elsif ($mode eq 'excel') {
+            my $col = 0;
+            foreach my $item (@cols) {
+                if ($item eq 'start' || $item eq 'end') {
+                    if (defined($item) && $item != 0) {
+                        $excel_sheet->write($row,$col++,
+                            &Apache::lonstathelpers::calc_serial($in{item}),
+                                    $format->{'date'});
+                    } else {
+                        $excel_sheet->write($row,$col++,'none');
+                    }
+                } else {
+                    $excel_sheet->write($row,$col++,$in{$item});
+                }
+            }
+            $row++;
         }
-        my $status   = $sdata->[$index{'status'}];
-        next if ($status ne 'Active');
-        #
-        $r->print(&Apache::loncommon::start_data_table_row());
-        $r->print(<<"END");
-    <td><input type="checkbox" name="droplist" value="$student"></td>
-    <td>$username</td>
-    <td>$domain</td>
-    <td>$id</td>
-    <td>$name</td>
-    <td>$start</td>
-    <td>$end</td>
-END
-        $r->print(&Apache::loncommon::end_data_table_row());
     }
-    $r->print(&Apache::loncommon::end_data_table().'<br />');
-    %lt=&Apache::lonlocal::texthash(
-                       'dp'   => "Expire User Roles",
-                       'ca'   => "check all",
-                       'ua'   => "uncheck all",
-                                       );
-    $r->print(<<"END");
-</p><p>
-<input type="button" value="$lt{'ca'}" onclick="javascript:checkAll(document.studentform.droplist)"> &nbsp;
-<input type="button" value="$lt{'ua'}" onclick="javascript:uncheckAll(document.studentform.droplist)">
-<p><input type=submit value="$lt{'dp'}"></p>
-END
-    return;
+    if ($mode eq 'view' || $mode eq 'html' || $mode eq 'autoenroll') {
+            $r->print(&Apache::loncommon::end_data_table().'<br />');
+    } elsif ($mode eq 'excel') {
+        $excel_workbook->close();
+        $r->print('<p><a href="'.$excel_filename.'">'.
+                  &mt('Your Excel spreadsheet').'</a> '.&mt('is ready for download').'.</p>'."\n");
+    } elsif ($mode eq 'csv') {
+        close($CSVfile);
+        $r->print('<a href="'.$CSVfilename.'">'.
+                  &mt('Your CSV file').'</a> is ready for download.'.
+                  "\n");
+        $r->rflush();
+    }
+    if ($mode eq 'autoenroll') {
+        return ($usercount,$autocount,$manualcount,$lockcount,$unlockcount);
+    } else {
+        return ($usercount);
+    }
+}
+
+sub role_type_names {
+    my %lt = &Apache::lonlocal::texthash (
+                         'domain'             => 'Domain Roles',
+                         'construction_space' => 'Co-Author Roles',
+                         'course'             => 'Course Roles',
+             );
+    return %lt;
 }
 
+sub results_header_row {
+    my ($rolefilter,$statusmode,$context) = @_;
+    my ($description,$showfilter);
+    if ($rolefilter ne 'Any') {
+        $showfilter = $rolefilter;
+    }
+    if ($context eq 'course') {
+        $description = &mt('Course - ').$env{'course.'.$env{'request.course.id'}.'.description'}.': ';
+        if ($statusmode eq 'Expired') {
+            $description .= &mt('Users in course with expired [_1] roles',$showfilter);
+        }
+        if ($statusmode eq 'Future') {
+            $description .= &mt('Users in course with future [_1] roles',$showfilter);
+        } elsif ($statusmode eq 'Active') {
+            $description .= &mt('Users in course with active [_1] roles',$showfilter);
+        } else {
+            if ($rolefilter eq 'Any') {
+                $description .= &mt('All users in course');
+            } else {
+                $description .= &mt('All users in course with [_1] roles',$rolefilter);
+            }
+        }
+    } elsif ($context eq 'construction_space') {
+        $description = &mt('Author space for [_1].').' ';
+        if ($statusmode eq 'Expired') {
+            $description .= &mt('Co-authors with expired [_1] roles',$showfilter);
+        } elsif ($statusmode eq 'Future') {
+            $description .= &mt('Co-authors with future [_1] roles',$showfilter);
+        } elsif ($statusmode eq 'Active') {
+            $description .= &mt('Co-authors with active [_1] roles',$showfilter);
+        } else {
+            if ($rolefilter eq 'Any') {
+                $description .= &mt('All co-authors');
+            } else {
+                $description .= &mt('All co-authors with [_1] roles',$rolefilter);
+            }
+        }
+    } elsif ($context eq 'domain') {
+        my $domdesc = &Apache::lonnet::domain($env{'request.role.domain'},'description');
+        $description = &mt('Domain - ').$domdesc.': ';
+        if ($env{'form.roletype'} eq 'domain') {
+            if ($statusmode eq 'Expired') {
+                $description .= &mt('Users in domain with expired [_1] roles',$showfilter);
+            } elsif ($statusmode eq 'Future') {
+                $description .= &mt('Users in domain with future [_1] roles',$showfilter);
+            } elsif ($statusmode eq 'Active') {
+                $description .= &mt('Users in domain with active [_1] roles',$showfilter);
+            } else {
+                if ($rolefilter eq 'Any') {
+                    $description .= &mt('All users in domain');
+                } else {
+                    $description .= &mt('All users in domain with [_1] roles',$rolefilter);
+                }
+            }
+        } elsif ($env{'form.roletype'} eq 'construction_space') {
+            if ($statusmode eq 'Expired') {
+                $description .= &mt('Co-authors in domain with expired [_1] roles',$showfilter);
+            } elsif ($statusmode eq 'Future') {
+                $description .= &mt('Co-authors in domain with future [_1] roles',$showfilter);
+            } elsif ($statusmode eq 'Active') {
+               $description .= &mt('Co-authors in domain with active [_1] roles',$showfilter);
+            } else {
+                if ($rolefilter eq 'Any') {
+                    $description .= &mt('All users with co-author roles in domain',$showfilter);
+                } else {
+                    $description .= &mt('All co-authors in domain  with [_1] roles',$rolefilter);
+                }
+            }
+        } elsif ($env{'form.roletype'} eq 'course') {
+            my $coursefilter = $env{'form.coursepick'};
+            if ($coursefilter eq 'category') {
+                my $instcode = &instcode_from_coursefilter();
+                if ($instcode eq '.') {
+                    $description .= &mt('All courses in domain').' - ';
+                } else {
+                    $description .= &mt('Courses in domain with institutional code: [_1]',$instcode).' - ';
+                }
+            } elsif ($coursefilter eq 'selected') {
+                $description .= &mt('Selected courses in domain').' - ';
+            } elsif ($coursefilter eq 'all') {
+                $description .= &mt('All courses in domain').' - ';
+            }
+            if ($statusmode eq 'Expired') {
+                $description .= &mt('users with expired [_1] roles',$showfilter);
+            } elsif ($statusmode eq 'Future') {
+                $description .= &mt('users with future [_1] roles',$showfilter);
+            } elsif ($statusmode eq 'Active') {
+                $description .= &mt('users with active [_1] roles',$showfilter);
+            } else {
+                if ($rolefilter eq 'Any') {
+                    $description .= &mt('all users');
+                } else {
+                    $description .= &mt('users with [_1] roles',$rolefilter);
+                }
+            }
+        }
+    }
+    return $description;
+}
+    
 #################################################
 #################################################
 sub show_drop_list {
@@ -1561,8 +2366,6 @@ END
     return;
 }
 
-
-
 #
 # Print out the initial form to get the file containing a list of users
 #
@@ -1572,11 +2375,11 @@ sub print_first_users_upload_form {
     $str  = '<input type="hidden" name="phase" value="two">';
     $str .= '<input type="hidden" name="action" value="upload" />';
     $str .= '<input type="hidden"   name="state"  value="got_file" />';
-    $str .= "<h3>".&mt('Upload a list of users')."</h3>\n";
+    $str .= "<h3>".&mt('Upload a file containing information about users')."</h3>\n";
     $str .= &Apache::loncommon::upfile_select_html();
     $str .= "<p>\n";
     $str .= '<input type="submit" name="fileupload" value="'.
-        &mt('Upload users list').'">'."\n";
+        &mt('Upload file of users').'">'."\n";
     $str .= '<label><input type="checkbox" name="noFirstLine" /> '.
         &mt('Ignore First Line')."</label></p>\n";
     $str .= &Apache::loncommon::help_open_topic("Course_Create_Class_List",
@@ -1723,6 +2526,7 @@ sub upfile_drop_add {
             # Get information about course groups
             %curr_groups = &Apache::longroup::coursegroups();
         }
+        my (%curr_rules,%got_rules,%alerts);
         # Get new users list
         foreach (@userdata) {
             my %entries=&Apache::loncommon::record_sep($_);
@@ -1754,7 +2558,7 @@ sub upfile_drop_add {
           $entries{$fields{'username'}},$fname,$mname,$lname,$gen).
                               '</b>');
                 } else {
-                    my $username = $entries{$fields{'username'}}; 
+                    my $username = $entries{$fields{'username'}};
                     my $sec;
                     if ($context eq 'course' || $setting eq 'course') {
                         # determine section number
@@ -1805,9 +2609,9 @@ sub upfile_drop_add {
                     my $role = '';
                     if (defined($fields{'role'})) {
                         if ($entries{$fields{'role'}}) {
-                             my @poss_roles = 
+                            my @poss_roles = 
                                  &curr_role_permissions($context,$setting);
-                             if (grep(/^\Q$entries{$fields{'role'}}\E/,@poss_roles)) {
+                            if (grep(/^\Q$entries{$fields{'role'}}\E/,@poss_roles)) {
                                 $role=$entries{$fields{'role'}};
                             } else {
                                 my $rolestr = join(', ',@poss_roles);
@@ -1825,6 +2629,48 @@ sub upfile_drop_add {
                              \$lname,\$gen,\$sec,\$role) {
                         $$_ =~ s/(\s+$|^\s+)//g;
                     }
+                    # check against rules
+                    my $checkid = 0;
+                    my $newuser = 0;
+                    my (%rulematch,%inst_results,%idinst_results);
+                    my $uhome=&Apache::lonnet::homeserver($username,$domain);
+                    if ($uhome eq 'no_host') {
+                        $checkid = 1;
+                        $newuser = 1;
+                        my $checkhash;
+                        my $checks = { 'username' => 1 };
+                        $checkhash->{$username.':'.$domain} = { 'newuser' => 1, };
+                        &Apache::loncommon::user_rule_check($checkhash,$checks,
+                            \%alerts,\%rulematch,\%inst_results,\%curr_rules,
+                            \%got_rules);
+                        if (ref($alerts{'username'}) eq 'HASH') {
+                            if (ref($alerts{'username'}{$domain}) eq 'HASH') {
+                                next if ($alerts{'username'}{$domain}{$username});
+                            }
+                        }
+                    }
+                    if ($id ne '') {
+                        if (!$newuser) {
+                            my %idhash = &Apache::lonnet::idrget($domain,($username));
+                            if ($idhash{$username} ne $id) {
+                                $checkid = 1;
+                            }
+                        }
+                        if ($checkid) {
+                            my $checkhash;
+                            my $checks = { 'id' => 1 };
+                            $checkhash->{$username.':'.$domain} = { 'newuser' => $newuser,
+                                                                    'id'  => $id };
+                            &Apache::loncommon::user_rule_check($checkhash,$checks,
+                                \%alerts,\%rulematch,\%idinst_results,\%curr_rules,
+                                \%got_rules);
+                            if (ref($alerts{'id'}) eq 'HASH') {
+                                if (ref($alerts{'id'}{$domain}) eq 'HASH') {
+                                    next if ($alerts{'id'}{$domain}{$id});
+                                }
+                            }
+                        }
+                    }
                     if ($password || $env{'form.login'} eq 'loc') {
                         my ($userresult,$authresult,$roleresult);
                         if ($role eq 'st') {
@@ -1843,7 +2689,7 @@ sub upfile_drop_add {
                                     $id,$amode,$password,$fname,
                                     $mname,$lname,$gen,$sec,
                                     $env{'form.forceid'},$desiredhost,
-                                    $email,$role,$enddate,$startdate);
+                                    $email,$role,$enddate,$startdate,$checkid);
                         }
                         $flushc = 
                             &user_change_result($r,$userresult,$authresult,
@@ -1868,9 +2714,7 @@ sub upfile_drop_add {
             }
         } # end of foreach (@userdata)
         # Flush the course logs so reverse user roles immediately updated
-        if ($context eq 'course' || ($context eq 'domain' && $setting eq 'course')) {
-            &Apache::lonnet::flushcourselogs();
-        }
+        &Apache::lonnet::flushcourselogs();
         $r->print("</p>\n<p>\n".&mt('Processed [_1] user(s).',$counts{'user'}).
                   "</p>\n");
         if ($counts{'role'} > 0) {
@@ -1882,6 +2726,39 @@ sub upfile_drop_add {
                       &mt('Authentication changed for [_1] existing users.',
                           $counts{'auth'})."</p>\n");
         }
+        if (keys(%alerts) > 0) {
+            if (ref($alerts{'username'}) eq 'HASH') {
+                foreach my $dom (sort(keys(%{$alerts{'username'}}))) {
+                    my $count;
+                    if (ref($alerts{'username'}{$dom}) eq 'HASH') {
+                        $count = keys(%{$alerts{'username'}{$dom}});
+                    } 
+                    my $domdesc = &Apache::lonnet::domain($domain,'description');
+                    if (ref($curr_rules{$dom}) eq 'HASH') {
+                        $r->print(&Apache::loncommon::instrule_disallow_msg(
+                                 'username',$domdesc,$count,'upload'));
+                    }
+                    $r->print(&Apache::loncommon::user_rule_formats($dom,
+                              $domdesc,$curr_rules{$dom}{'username'},
+                             'username'));
+                }
+            }
+            if (ref($alerts{'id'}) eq 'HASH') {
+                foreach my $dom (sort(keys(%{$alerts{'id'}}))) {
+                    my $count;
+                    if (ref($alerts{'id'}{$dom}) eq 'HASH') {
+                        $count = keys(%{$alerts{'id'}{$dom}});
+                    }
+                    my $domdesc = &Apache::lonnet::domain($domain,'description');
+                    if (ref($curr_rules{$dom}) eq 'HASH') {
+                        $r->print(&Apache::loncommon::instrule_disallow_msg(
+                                 'id',$domdesc,$count,'upload'));
+                    }
+                    $r->print(&Apache::loncommon::user_rule_formats($dom,
+                              $domdesc,$curr_rules{$dom}{'id'},'id'));
+                }
+            }
+        }
         $r->print('<form name="uploadresult" action="/adm/createuser">');
         $r->print(&Apache::lonhtmlcommon::echo_form_input(['phase','prevphase','currstate']));
         $r->print('</form>');
@@ -1997,15 +2874,37 @@ sub expire_user_list {
     $r->print('<p>'.&mt('Re-enrollment will re-activate data.')) if ($count);
 }
 
-sub section_check_js {
-    my $groupslist;
-    my %curr_groups = &Apache::longroup::coursegroups();
-    if (%curr_groups) {
-        $groupslist = join('","',sort(keys(%curr_groups)));
+sub classlist_drop {
+    my ($scope,$uname,$udom,$now,$action) = @_;
+    my ($cdom,$cnum) = ($scope=~m{^/($match_domain)/($match_courseid)});
+    my $cid=$cdom.'_'.$cnum;
+    my $user = $uname.':'.$udom;
+    if ($action eq 'drop') {
+        if (!&active_student_roles($cnum,$cdom,$uname,$udom)) {
+            my $result =
+                &Apache::lonnet::cput('classlist',
+                                      { $user => $now },
+                                      $env{'course.'.$cid.'.domain'},
+                                      $env{'course.'.$cid.'.num'});
+            return &mt('Drop from classlist: [_1]',
+                       '<b>'.$result.'</b>').'<br />';
+        }
     }
+}
+
+sub active_student_roles {
+    my ($cnum,$cdom,$uname,$udom) = @_;
+    my %roles =
+        &Apache::lonnet::get_my_roles($uname,$udom,'userroles',
+                                      ['future','active'],['st']);
+    return exists($roles{"$cnum:$cdom:st"});
+}
+
+sub section_check_js {
+    my $groupslist= &get_groupslist();
     return <<"END";
 function validate(caller) {
-    var groups = new Array("$groupslist");
+    var groups = new Array($groupslist);
     var secname = caller.value;
     if ((secname == 'all') || (secname == 'none')) {
         alert("'"+secname+"' may not be used as the name for a section, as it is a reserved word.\\nPlease choose a different section name.");
@@ -2052,5 +2951,144 @@ sub set_login {
     return $response;
 }
 
+sub course_sections {
+    my ($sections_count,$role) = @_;
+    my $output = '';
+    my @sections = (sort {$a <=> $b} keys %{$sections_count});
+    if (scalar(@sections) == 1) {
+        $output = '<select name="currsec_'.$role.'" >'."\n".
+                  '  <option value="">Select</option>'."\n".
+                  '  <option value="">No section</option>'."\n".
+                  '  <option value="'.$sections[0].'" >'.$sections[0].'</option>'."\n";
+    } else {
+        $output = '<select name="currsec_'.$role.'" ';
+        my $multiple = 4;
+        if (scalar(@sections) < 4) { $multiple = scalar(@sections); }
+        $output .= 'multiple="multiple" size="'.$multiple.'">'."\n";
+        foreach my $sec (@sections) {
+            $output .= '<option value="'.$sec.'">'.$sec."</option>\n";
+        }
+    }
+    $output .= '</select>';
+    return $output;
+}
+
+sub get_groupslist {
+    my $groupslist;
+    my %curr_groups = &Apache::longroup::coursegroups();
+    if (%curr_groups) {
+        $groupslist = join('","',sort(keys(%curr_groups)));
+        $groupslist = '"'.$groupslist.'"';
+    }
+    return $groupslist;
+}
+
+sub setsections_javascript {
+    my ($form,$groupslist) = @_;
+    my ($checkincluded,$finish,$roleplace,$setsection_js);
+    if ($form eq 'cu') {
+        $checkincluded = 'formname.elements[i-1].checked == true';
+        $finish = 'formname.submit()';
+        $roleplace = 3;
+    } else {
+        $checkincluded = 'formname.name == "'.$form.'"';
+        $finish = "seccheck = 'ok';";
+        $roleplace = 1;
+        $setsection_js = "var seccheck = 'alert';";
+    }
+    my %alerts = &Apache::lonlocal::texthash(
+                    secd => 'Section designations do not apply to Course Coordinator roles.',
+                    accr => 'A course coordinator role will be added with access to all sections.',
+                    inea => 'In each course, each user may only have one student role at a time.',
+                    youh => 'You had selected ',
+                    secs => 'sections.',
+                    plmo => 'Please modify your selections so they include no more than one section.',
+                    mayn => 'may not be used as the name for a section, as it is a reserved word.',
+                    plch => 'Please choose a different section name.',
+                    mnot => 'may not be used as a section name, as it is the name of a course group.',
+                    secn => 'Section names and group names must be distinct. Please choose a different section name.',
+                 );
+    $setsection_js .= <<"ENDSECCODE";
+
+function setSections(formname) {
+    var re1 = /^currsec_/;
+    var groups = new Array($groupslist);
+    for (var i=0;i<formname.elements.length;i++) {
+        var str = formname.elements[i].name;
+        var checkcurr = str.match(re1);
+        if (checkcurr != null) {
+            if ($checkincluded) {
+                var match = str.split('_');
+                var role = match[$roleplace];
+                if (role == 'cc') {
+                    alert("$alerts{'secd'}\\n$alerts{'accr'}");
+                }
+                else {
+                    var sections = '';
+                    var numsec = 0;
+                    var sections;
+                    for (var j=0; j<formname.elements[i].length; j++) {
+                        if (formname.elements[i].options[j].selected == true ) {
+                            if (formname.elements[i].options[j].value != "") {
+                                if (numsec == 0) {
+                                    if (formname.elements[i].options[j].value != "") {
+                                        sections = formname.elements[i].options[j].value;
+                                        numsec ++;
+                                    }
+                                }
+                                else {
+                                    sections = sections + "," +  formname.elements[i].options[j].value
+                                    numsec ++;
+                                }
+                            }
+                        }
+                    }
+                    if (numsec > 0) {
+                        if (formname.elements[i+1].value != "" && formname.elements[i+1].value != null) {
+                            sections = sections + "," +  formname.elements[i+1].value;
+                        }
+                    }
+                    else {
+                        sections = formname.elements[i+1].value;
+                    }
+                    var newsecs = formname.elements[i+1].value;
+                    var numsplit;
+                    if (newsecs != null && newsecs != "") {
+                        numsplit = newsecs.split(/,/g);
+                        numsec = numsec + numsplit.length;
+                    }
+
+                    if ((role == 'st') && (numsec > 1)) {
+                        alert("$alerts{'inea'} $alerts{'youh'} "+numsec+" $alerts{'secs'}\\n$alerts{'plmo'}")
+                        return;
+                    }
+                    else {
+                        if (numsplit != null) {
+                            for (var j=0; j<numsplit.length; j++) {
+                                if ((numsplit[j] == 'all') ||
+                                    (numsplit[j] == 'none')) {
+                                    alert("'"+numsplit[j]+"' $alerts{'mayn'}\\n$alerts{'plch'}");
+                                    return;
+                                }
+                                for (var k=0; k<groups.length; k++) {
+                                    if (numsplit[j] == groups[k]) {
+                                        alert("'"+numsplit[j]+"' $alerts{'mnot'}\\n$alerts{'secn'}");
+                                        return;
+                                    }
+                                }
+                            }
+                        }
+                        formname.elements[i+2].value = sections;
+                    }
+                }
+            }
+        }
+    }
+    $finish
+}
+ENDSECCODE
+    return $setsection_js;
+}
+
 1;