--- loncom/interface/Attic/londropadd.pm	2002/04/15 23:37:37	1.24
+++ loncom/interface/Attic/londropadd.pm	2002/04/16 21:02:17	1.26
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to drop and add students in courses 
 #
-# $Id: londropadd.pm,v 1.24 2002/04/15 23:37:37 albertel Exp $
+# $Id: londropadd.pm,v 1.26 2002/04/16 21:02:17 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -75,42 +75,37 @@ ENDHEAD
 }
 
 # =========== Drop student from all sections of a course, except optional $csec
-
-sub dropstudent {
-     my ($udom,$unam,$courseid,$csec)=@_;
-     $courseid=~s/\_/\//g;
-     $courseid=~s/^(\w)/\/$1/;
-     foreach (split(/\&/,
-		    &Apache::lonnet::reply('dump:'.$udom.':'.$unam.':roles',
-			     &Apache::lonnet::homeserver($unam,$udom)))) {
-        my ($key,$value)=split(/\=/,$_);
-        $key=&Apache::lonnet::unescape($key);
-        if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
-          my $section=$1;
-          if ($key eq $courseid.'_st') { $section=''; }
-          if (((!$section) && (!$csec)) || ($section ne $csec)) {
-	    my ($dummy,$end,$start)=split(/\_/,
-                                    &Apache::lonnet::unescape($value));
-            my $now=time;
-            my $notactive=0;
-            if ($start) {
-		if ($now<$start) { $notactive=1; }
-            }
-            if ($end) {
-                if ($now>$end) { $notactive=1; }
-            } 
-            unless ($notactive) {
-                my $reply=&Apache::lonnet::modifystudent(
-                                   $udom,$unam,'','','',
-			           '','','','',$section,time);
+sub modifystudent {
+    my ($udom,$unam,$courseid,$csec)=@_;
+    # if $csec is undefined, drop the student from all the courses matching
+    # this one.  If $csec is defined, drop them from all other sections of 
+    # this course and add them to section $csec
+    $courseid=~s/\_/\//g;
+    $courseid=~s/^(\w)/\/$1/;
+    my %roles = &Apache::lonnet::dump('roles',$udom,$unam);
+    my ($tmp) = keys(%roles);
+    # Bail out if we were unable to get the students roles
+    return if ($tmp =~ /^(con_lost|error|no_such_host)/i);
+    # Go through the roles looking for enrollment in this course
+    foreach my $course (keys(%roles)) {
+        my $value = $roles{$course};
+        if ($course=~/^$courseid(?:\/)*(\w+)*\_st$/) {
+            # We are in this course
+            my $section=$1;
+            $section='' if ($course eq $courseid.'_st');
+            if (((!$section) && (!$csec)) || ($section ne $csec)) {
+                my (undef,$end,$start)=split(/\_/,$course);
+                my $now=time;
+                if (($start) && ($end) && ($now>$start) && ($now<$end)) {
+                    my $reply=&Apache::lonnet::modifystudent
+                        ($udom,$unam,'','','','','','','',$section,time);
+                }
             }
-	  }
         }
     }
 }
 
 # ============================================================== Menu Phase One
-
 sub menu_phase_one {
     my $r=shift;
     my $upfile_select=&Apache::loncommon::upfile_select_html();
@@ -129,7 +124,6 @@ $upfile_select
 ENDUPFORM
 }
 
-
 sub phase_two_header {
     my ($r,$datatoken,$distotal,$krbdefdom)=@_;
     my $javascript;
@@ -145,16 +139,16 @@ sub phase_two_header {
 Total number of records found in file: $distotal <hr />
 Enter as many fields as you can. The system will inform you and bring you back
 to this page if the data selected is insufficient to run your class.<hr />
-<input type="submit" name="associate" value="Reverse Association" />
-<input type="hidden" name="phase" value="three" />
-<input type="hidden" name="datatoken" value="$datatoken" />
+<input type="submit" name="associate"  value="Reverse Association" />
+<input type="hidden" name="phase"      value="three" />
+<input type="hidden" name="datatoken"  value="$datatoken" />
 <input type="hidden" name="fileupload" value="$ENV{'form.fileupload'}" />
 <input type="hidden" name="upfiletype" value="$ENV{'form.upfiletype'}" />
-<input type="hidden" name="upfile_associate" value="$ENV{'form.upfile_associate'}" />
+<input type="hidden" name="upfile_associate" 
+                                       value="$ENV{'form.upfile_associate'}" />
 <hr />
 <script>
 $javascript
-
 $javascript_validations
 </script>
 ENDPICK
@@ -313,7 +307,6 @@ function verify(vf) {
     verify_message(vf,founduname,foundpwd,foundname,foundid,foundsec);
 }
 
-
 function flip(vf,tf) {
    var nw=eval('vf.f'+tf+'.selectedIndex');
    var i;
@@ -423,28 +416,28 @@ sub phase_two_end {
 <h3>Login Type</h3>
 <p>Note: this will not take effect if the user already exists</p>
 <p>
-<input type=radio name=login value=krb onClick="clickkrb(this.form);" />
+<input type="radio" name="login" value="krb" onClick="clickkrb(this.form);" />
 Kerberos authenticated with domain
-<input type=text size=10 name=krbdom onChange="setkrb(this.form);" />
+<input type="text" size="10" name="krbdom" onChange="setkrb(this.form);" />
 </p>
 <p>
-<input type=radio name=login value=int onClick="clickint(this.form);" />
+<input type="radio" name="login" value="int" onClick="clickint(this.form);" />
 Internally authenticated (with initial password 
-<input type=text size=10 name=intpwd onChange="setint(this.form);" />)
+<input type="text" size="10" name="intpwd" onChange="setint(this.form);" />)
 </p>
 <p>
-<input type=radio name=login value=loc onClick="clickloc(this.form);" />
+<input type="radio" name="login" value="loc" onClick="clickloc(this.form);" />
 Local Authentication with argument
-<input type=text size=10 name=locarg onChange="setloc(this.form);" />
+<input type="text" size="10" name="locarg" onChange="setloc(this.form);" />
 </p>
 <h3>LON-CAPA Domain for Students</h3>
 LON-CAPA domain: <input type=text size=10 value=$defdom name=lcdomain><p>
 <h3>Starting and Ending Dates</h3>
-<input type="hidden" value='' name="pres_value">
-<input type="hidden" value='' name="pres_type">
-<input type="hidden" value='' name="pres_marker">
-<input type="hidden" value='$today' name=startdate>
-<input type="hidden" value='$halfyear' name=enddate>
+<input type="hidden" value=''          name="pres_value"  >
+<input type="hidden" value=''          name="pres_type"   >
+<input type="hidden" value=''          name="pres_marker" >
+<input type="hidden" value='$today'    name="startdate"   >
+<input type="hidden" value='$halfyear' name="enddate"     >
 <a 
  href="javascript:pjump('date_start','Enrollment Starting Date',document.studentform.startdate.value,'start','studentform.pres','dateset');"
 >Set Starting Date</a><p>
@@ -459,13 +452,12 @@ LON-CAPA domain: <input type=text size=1
 <input type=checkbox name=forceid value=yes> 
 Disable ID/Student Number Safeguard and Force Change of Conflicting IDs
 (only do if you know what you are doing)<p>
-<input type=button onClick="verify(this.form)" value="Update Courselist"><br>
+<input type="button" onClick="verify(this.form)" value="Update Courselist"><br>
 Note: for large courses, this operation might be time consuming.
 ENDPICK
 }
 
 # ======================================================= Menu Phase Two Upload
-
 sub menu_phase_two_upload {
     my $r=shift;
 
@@ -479,18 +471,13 @@ sub menu_phase_two_upload {
     my @records=&Apache::loncommon::upfile_record_sep();
     my $total=$#records;
     my $distotal=$total+1;
-
     $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
     my $krbdefdom=$1;
     $krbdefdom=~tr/a-z/A-Z/;
-
     my $today=time;
     my $halfyear=$today+15552000;
-
     my $defdom=$r->dir_config('lonDefDomain');
-
     &phase_two_header($r,$datatoken,$distotal,$krbdefdom);
-
     my $i;
     my $keyfields;
     if ($total>=0) {
@@ -511,13 +498,10 @@ sub menu_phase_two_upload {
 	    $keyfields=join(',',sort(keys(%sone)));
 	}
     }
-
-
     &phase_two_end($r,$i,$keyfields,$defdom,$today,$halfyear);
 }
 
 # ======================================================= Enroll single student
-
 sub enroll_single_student {
     my $r=shift;
     $r->print('<h3>Enrolling Student</h3>');
@@ -537,8 +521,8 @@ sub enroll_single_student {
 	    if (!$genpwd) { $genpwd=" "; }
 	}
         if (($amode) && ($genpwd)) {
- 	  &dropstudent($ENV{'form.cdomain'},$ENV{'form.cuname'},
-		       $ENV{'request.course.id'},$ENV{'form.csec'});
+            &modifystudent($ENV{'form.cdomain'},$ENV{'form.cuname'},
+                           $ENV{'request.course.id'},$ENV{'form.csec'});
           $r->print(&Apache::lonnet::modifystudent(
                       $ENV{'form.cdomain'},$ENV{'form.cuname'},
                       $ENV{'form.cstid'},$amode,$genpwd,
@@ -555,17 +539,12 @@ sub enroll_single_student {
 }
 
 # ======================================================= Menu Phase Two Enroll
-
 sub menu_phase_two_enroll {
     my $r=shift;
-    
-    $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
-    my $krbdefdom=$1;
+    my ($krbdefdom) = $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
     $krbdefdom=~tr/a-z/A-Z/;
-
-    my $today=time;
-    my $halfyear=$today+15552000;
-
+    my $today    = time;
+    my $halfyear = $today+15552000;
     my $defdom=$r->dir_config('lonDefDomain');
     my $javascript_validations=&javascript_validations($krbdefdom);
     $r->print(<<ENDSENROLL);
@@ -577,12 +556,12 @@ function verify(vf) {
     var foundid=0;
     var foundsec=0;
     var tw;
-    if ((typeof(vf.cuname.value)!="undefined") && (vf.cuname.value!='') && 
+    if ((typeof(vf.cuname.value) !="undefined") && (vf.cuname.value!='') && 
 	(typeof(vf.cdomain.value)!="undefined") && (vf.cdomain.value!='')) {
         founduname=1;
     }
     if ((typeof(vf.cfirst.value)!="undefined") && (vf.cfirst.value!='') &&
-	(typeof(vf.clast.value)!="undefined") && (vf.clast.value!='')) {
+	(typeof(vf.clast.value) !="undefined") && (vf.clast.value!='')) {
         foundname=1;
     }
     if ((typeof(vf.csec.value)!="undefined") && (vf.csec.value!='')) {
@@ -606,224 +585,253 @@ function clearpwd(vf) {
 
 </script>
 <h3>Personal Data</h3>
-First Name: <input type=text name=cfirst size=15><br>
-Middle Name: <input type=text name=cmiddle size=15><br>
-Last Name: <input type=text name=clast size=15><br>
-Generation: <input type=text name=cgen size=5><p>
+First Name:  <input type="text" name="cfirst"  size="15"><br>
+Middle Name: <input type="text" name="cmiddle" size="15"><br>
+Last Name:   <input type="text" name="clast"   size="15"><br>
+Generation:  <input type="text" name="cgen"    size="5"> 
 
-ID/Student Number: <input type=text name=cstid size=10><p>
+<p>ID/Student Number: <input type="text" name="cstid" size="10"></p>
 
-Group/Section: <input type=text name=csec size=5><p>
+<p>Group/Section: <input type=text name=csec size=5></p>
 
 <h3>Login Data</h3>
-Username: <input type=text name=cuname size=15><p>
-Domain: <input type=text size=10 value=$defdom name=cdomain><p>
-Note: login settings below  will not take effect if the user already exists<p>
-
-<input type=radio name=login value=krb onClick="clickkrb(this.form);">
-Kerberos authenticated with domain
-<input type=text size=10 name=krbdom onChange="setkrb(this.form);"><p>
-<input type=radio name=login value=int onClick="clickint(this.form);"> 
+<p>Username: <input type="text" name="cuname"  size="15"></p>
+<p>Domain:   <input type="text" name="cdomain" size="10" value="$defdom"></p>
+<p>Note: login settings below  will not take effect if the user already exists
+</p><p>
+<input type="radio" name="login" value="krb" onClick="clickkrb(this.form);">
+Kerberos authenticated with domain 
+<input type="text" name="krbdom" size="10"  onChange="setkrb(this.form);">
+</p><p>
+<input type="radio" name="login"  value="int" onClick="clickint(this.form);"> 
 Internally authenticated (with initial password 
-<input type=text size=10 name=intpwd onChange="setint(this.form);">)
-<p>
-<input type=radio name=login value=loc onClick="clickloc(this.form);" />
+<input type="text"  name="intpwd" size="10" onChange="setint(this.form);">)
+</p><p>
+<input type="radio" name="login" value="loc" onClick="clickloc(this.form);" />
 Local Authentication with argument
-<input type=text size=10 name=locarg onChange="setloc(this.form);" />
-</p>
+<input type="text" name="locarg" size="10"  onChange="setloc(this.form);" />
+</p><p>
 <h3>Starting and Ending Dates</h3>
 <input type="hidden" value='' name="pres_value">
 <input type="hidden" value='' name="pres_type">
 <input type="hidden" value='' name="pres_marker">
 <input type="hidden" value='$today' name=startdate>
 <input type="hidden" value='$halfyear' name=enddate>
+</p><p>
 <a 
  href="javascript:pjump('date_start','Enrollment Starting Date',document.studentform.startdate.value,'start','studentform.pres','dateset');"
->Set Starting Date</a><p>
-
+>Set Starting Date</a>
+</p><p>
 <a 
  href="javascript:pjump('date_end','Enrollment Ending Date',document.studentform.enddate.value,'end','studentform.pres','dateset');"
->Set Ending Date</a><p>
+>Set Ending Date</a>
+</p><p>
 <h3>ID/Student Number</h3>
-<input type=checkbox name=forceid value=yes> 
+<input type="checkbox" name="forceid" value="yes"> 
 Disable ID/Student Number Safeguard and Force Change of Conflicting IDs
 (only do if you know what you are doing)<p>
-<input type=button onClick="verify(this.form)" value="Enroll as student"><br>
-<input type=hidden name=phase value=five>
+<input type="button" onClick="verify(this.form)" value="Enroll as student"><br>
+<input type="hidden" name="phase" value="five">
+</p>
 ENDSENROLL
 }
 
-# ========================================================= Menu Phase Two Drop
+# =================================================== get the current classlist
+sub get_current_classlist {
+    my ($domain,$identifier) = @_;
+    # domain is the domain the class is being run in
+    # identifier is the internal, unique identifier for the class.
+    my %currentlist=();
+    my $now=time;
+    my %results=&Apache::lonnet::dump('classlist',$domain,$identifier);
+    my ($tmp) = keys(%results);
+    if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
+        foreach my $student (keys(%results)) {
+            # Extract the start and end dates
+            my ($end,$start)=split(/\:/,$results{$student});
+            # If the class isn't over, put it in the list
+            unless (($end) && ($now>$end)) { 
+                $currentlist{$student}=1;
+            }
+        }
+        return %currentlist;
+    } else {
+        return undef;
+    }
+}
 
+# ========================================================= Menu Phase Two Drop
 sub menu_phase_two_drop {
     my $r=shift;
     my $cid=$ENV{'request.course.id'};
-                 my $classlst=&Apache::lonnet::reply
-                 ('dump:'.$ENV{'course.'.$cid.'.domain'}.':'.
-	                  $ENV{'course.'.$cid.'.num'}.':classlist',
-	                  $ENV{'course.'.$cid.'.home'});
-                 my %currentlist=();
-                 my $now=time;
-                 unless ($classlst=~/^error\:/) {
-                     foreach (split(/\&/,$classlst)) {
-                        my ($name,$value)=split(/\=/,$_);
-                        my ($end,$start)=split(/\:/,
-                                            &Apache::lonnet::unescape($value));
-                        my $active=1;
-                        if (($end) && ($now>$end)) { $active=0; }
-                        if ($active) {
-		           $currentlist{&Apache::lonnet::unescape($name)}=1;
-                        }
-                     }
-# ----------------------------------------------------------- Print out choices
-                     &show_drop_list($r,%currentlist);
-	         } else {
-                     $r->print(
-                  '<font color=red><h3>Could not access classlist: '.$classlst.
-                  '</h3></font>');
-                 }
+    my %currentlist=&get_current_classlist($ENV{'course.'.$cid.'.domain'},
+                                           $ENV{'course.'.$cid.'.num'});
+    if (!defined(%currentlist)) { 
+        $r->print('<font color=red>'.
+                  '<h3> Could not access classlist.</h3></font>');
+    } else {
+        # Print out the available choices
+        &show_drop_list($r,%currentlist);
+    }
 }
 
 # =================================================== Show student list to drop
-
 sub show_drop_list {
     my ($r,%currentlist)=@_;
     my $cid=$ENV{'request.course.id'};
-
-    $r->print('<input type=hidden name=phase value=four>');
-                     $r->print('<table border=2>');
-                     foreach (sort keys %currentlist) {
-                         my ($sname,$sdom)=split(/\:/,$_);
-                         my %reply=&Apache::lonnet::idrget($sdom,$sname);
-                         my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
-                         my @reply=split(/[\&\=]/,&Apache::lonnet::reply(
-                           'get:'.$sdom.':'.$sname.
-		      ':environment:firstname&middlename&lastname&generation',
-                           &Apache::lonnet::homeserver($sname,$sdom)));
- 			 $r->print(
-                  '<tr><td><input type=checkbox name="drop:'.$_.'"></td><td>'.
-                                   $sname.'</td><td>'.$sdom.'</td><td>'.
-                                   $reply{$sname}.'</td><td>'.
-                                   &Apache::lonnet::unescape($reply[2]).' '.
-                                   &Apache::lonnet::unescape($reply[3]).', '.
-                                   &Apache::lonnet::unescape($reply[0]).' '.
-                                   &Apache::lonnet::unescape($reply[1]).
-                                   '</td><td>'.
-                                   $ssec."</td></tr>\n");
-                     }
-                     $r->print('</table><br>');
-                     $r->print('<input type=submit value="Drop Students">');
+    $r->print(<<'END');
+<input type="hidden" name="phase" value="four">
+<table border=2>
+<tr><th>&nbsp;</th><th>username</th><th>domain</th>
+<th>ID</th><th>student name</th><th>generation</th>
+<th>section</th></tr>
+END
+    foreach (sort keys %currentlist) {
+        my ($sname,$sdom)=split(/\:/,$_);
+        my %reply=&Apache::lonnet::idrget($sdom,$sname);
+        my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
+        my %info=&Apache::lonnet::get('environment',
+                                      ['firstname','middlename',
+                                       'lastname','generation'],
+                                      $sdom, $sname);
+        my ($tmp) = keys(%info);
+        if ($tmp =~ /^(con_lost|error|no_such_host)/i) {
+            $r->print('<tr><td colspan="7"><font color="red">'.
+                      'Internal error: unable to get environment '.
+                      'for '.$sname.' in domain '.$sdom.'</font></td></tr>');
+        } else {
+            $r->print(<<"END");
+<tr>
+    <td><input type="checkbox" name="droplist" value="$_"></td>
+    <td>$sname</td>
+    <td>$sdom</td>
+    <td>$reply{$sname}</td>
+    <td>$info{'lastname'}, $info{'firstname'} $info{'middlename'}</td>
+    <td>$info{'generation'}</td>
+    <td>$ssec</td>
+</tr>
+END
+        }
+    }
+    $r->print('</table><br>');
+    $r->print('<input type=submit value="Drop Students">');
 }
 
 # ================================================= Drop/Add from uploaded file
-
 sub upfile_drop_add {
     my $r=shift;
-
     &Apache::loncommon::load_tmp_file($r);
     my @studentdata=&Apache::loncommon::upfile_record_sep();
-
-    my @keyfields=split(/\,/,$ENV{'form.keyfields'});
-    my $cid=$ENV{'request.course.id'};
-             my %fields=();
-             for (my $i=0;$i<=$ENV{'form.nfields'};$i++) {
-		 if ($ENV{'form.upfile_associate'} eq 'reverse') {
-		     if ($ENV{'form.f'.$i} ne 'none') {
-			 $fields{$keyfields[$i]}=$ENV{'form.f'.$i};
-		     }
-		 } else {
-		     $fields{$ENV{'form.f'.$i}}=$keyfields[$i];
-		 }
-             }
-             my $startdate=$ENV{'form.startdate'};
-             my $enddate=$ENV{'form.enddate'};
-             if ($startdate=~/\D/) { $startdate=''; }
-             if ($enddate=~/\D/) { $enddate=''; }
-             my $domain=$ENV{'form.lcdomain'};
-             my $amode='';
-             my $genpwd='';
-             if ($ENV{'form.login'} eq 'krb') {
-                 $amode='krb4';
-                 $genpwd=$ENV{'form.krbdom'};
-             } elsif ($ENV{'form.login'} eq 'int') {
-                 $amode='internal';
-                 if ((defined($ENV{'form.intpwd'})) && ($ENV{'form.intpwd'})) {
-		     $genpwd=$ENV{'form.intpwd'};
-                 }
-             } elsif ($ENV{'form.login'} eq 'loc') {
-		 $amode='localauth';
-		 if ((defined($ENV{'form.locarg'})) && ($ENV{'form.locarg'})) {
-		     $genpwd=$ENV{'form.locarg'};
-                 }
-	     }
-             unless (($domain=~/\W/) || ($amode eq '')) {
-              $r->print('<h3>Enrolling Students</h3>');
-              my $count=0;
-              my $flushc=0;
-              my %student=();
-# ----------------------------------------------------------- Get new classlist
-# --------------------------------------------------------- Enroll new students
-	      foreach (@studentdata) {
-		  my %entries=&Apache::loncommon::record_sep($_);
-
-                unless (($entries{$fields{'username'}} eq '') ||
-                        (!defined($entries{$fields{'username'}}))) {
-                  my $fname=''; my $mname=''; my $lname=''; my $gen='';
-                  if (defined($fields{'names'})) {
-		      ($lname,$fname,$mname)=
-	            ($entries{$fields{'names'}}=~/([^\,]+)\,\s*(\w+)\s*(.*)$/);
-                  } else {
-                      if (defined($fields{'fname'})) {
-		         $fname=$entries{$fields{'fname'}};
-		      }
-                      if (defined($fields{'mname'})) {
-		         $mname=$entries{$fields{'mname'}};
-		      }
-                      if (defined($fields{'lname'})) {
-		         $lname=$entries{$fields{'lname'}};
-		      }
-                      if (defined($fields{'gen'})) {
-		         $gen=$entries{$fields{'gen'}};
-		      }
-                  }
-                  if ($entries{$fields{'username'}}=~/\W/) {
-                     $r->print('<p><b>Unacceptable username: '.
+    my @keyfields = split(/\,/,$ENV{'form.keyfields'});
+    my $cid = $ENV{'request.course.id'};
+    my %fields=();
+    for (my $i=0; $i<=$ENV{'form.nfields'}; $i++) {
+        if ($ENV{'form.upfile_associate'} eq 'reverse') {
+            if ($ENV{'form.f'.$i} ne 'none') {
+                $fields{$keyfields[$i]}=$ENV{'form.f'.$i};
+            }
+        } else {
+            $fields{$ENV{'form.f'.$i}}=$keyfields[$i];
+        }
+    }
+    #
+    my $startdate = $ENV{'form.startdate'};
+    my $enddate   = $ENV{'form.enddate'};
+    if ($startdate=~/\D/) { $startdate=''; }
+    if ($enddate=~/\D/)   { $enddate=''; }
+    #
+    my $domain=$ENV{'form.lcdomain'};
+    # Determine authentication mechanism
+    my $amode  = '';
+    my $genpwd = '';
+    if ($ENV{'form.login'} eq 'krb') {
+        $amode='krb4';
+        $genpwd=$ENV{'form.krbdom'};
+    } elsif ($ENV{'form.login'} eq 'int') {
+        $amode='internal';
+        if ((defined($ENV{'form.intpwd'})) && ($ENV{'form.intpwd'})) {
+            $genpwd=$ENV{'form.intpwd'};
+        }
+    } elsif ($ENV{'form.login'} eq 'loc') {
+        $amode='localauth';
+        if ((defined($ENV{'form.locarg'})) && ($ENV{'form.locarg'})) {
+            $genpwd=$ENV{'form.locarg'};
+        }
+    }
+    unless (($domain=~/\W/) || ($amode eq '')) {
+        #######################################
+        ##         Enroll Students           ##
+        #######################################
+        $r->print('<h3>Enrolling Students</h3>');
+        my $count=0;
+        my $flushc=0;
+        my %student=();
+        # Get new classlist
+        foreach (@studentdata) {
+            my %entries=&Apache::loncommon::record_sep($_);
+            # Determine student name
+            unless (($entries{$fields{'username'}} eq '') ||
+                    (!defined($entries{$fields{'username'}}))) {
+                my ($fname, $mname, $lname,$gen) = ('','','','');
+                if (defined($fields{'names'})) {
+                    ($lname,$fname,$mname)=($entries{$fields{'names'}}=~
+                                            /([^\,]+)\,\s*(\w+)\s*(.*)$/);
+                } else {
+                    if (defined($fields{'fname'})) {
+                        $fname=$entries{$fields{'fname'}};
+                    }
+                    if (defined($fields{'mname'})) {
+                        $mname=$entries{$fields{'mname'}};
+                    }
+                    if (defined($fields{'lname'})) {
+                        $lname=$entries{$fields{'lname'}};
+                    }
+                    if (defined($fields{'gen'})) {
+                        $gen=$entries{$fields{'gen'}};
+                    }
+                }
+                if ($entries{$fields{'username'}}=~/\W/) {
+                    $r->print('<p><b>Unacceptable username: '.
                               $entries{$fields{'username'}}.' for user '.
                               $fname.' '.$mname.' '.$lname.' '.$gen.'</b><p>');
-		  } else {
-                      my $sec='';
-                      my $username=$entries{$fields{'username'}};
-                      if (defined($fields{'sec'})) {
-                         if (defined($entries{$fields{'sec'}})) {
-			     $sec=$entries{$fields{'sec'}};
-                         }
-                      }
-                      my $id='';
-                      if (defined($fields{'id'})) {
-                         if (defined($entries{$fields{'id'}})) {
-			     $id=$entries{$fields{'id'}};
-                         }
-                         $id=~tr/A-Z/a-z/;
-                      }
-                      my $password='';
-                      if ($genpwd) { 
-                         $password=$genpwd; 
-		      } else {
-                         if (defined($fields{'ipwd'})) {
-			     if ($entries{$fields{'ipwd'}}) {
-				 $password=$entries{$fields{'ipwd'}};
-                             }
-                         }
-                      }
-                      if ($password) {
-			 &dropstudent($domain,$username,$cid,$sec);
-                         my $reply=&Apache::lonnet::modifystudent(
-                          $domain,$username,$id,$amode,$password,
-			   $fname,$mname,$lname,$gen,$sec,$enddate,$startdate,
-                           $ENV{'form.forceid'});
-                         unless ($reply eq 'ok') {
-                            $r->print(
-                             "<p><b>Error enrolling $username: $reply</b><p>");
+                } else {
+                    # determine section number
+                    my $sec='';
+                    my $username=$entries{$fields{'username'}};
+                    if (defined($fields{'sec'})) {
+                        if (defined($entries{$fields{'sec'}})) {
+                            $sec=$entries{$fields{'sec'}};
+                        }
+                    }
+                    # determine student id number
+                    my $id='';
+                    if (defined($fields{'id'})) {
+                        if (defined($entries{$fields{'id'}})) {
+                            $id=$entries{$fields{'id'}};
+                        }
+                        $id=~tr/A-Z/a-z/;
+                    }
+                    # determine student password
+                    my $password='';
+                    if ($genpwd) { 
+                        $password=$genpwd; 
+                    } else {
+                        if (defined($fields{'ipwd'})) {
+                            if ($entries{$fields{'ipwd'}}) {
+                                $password=$entries{$fields{'ipwd'}};
+                            }
+                        }
+                    }
+                    if ($password) {
+                        &modifystudent($domain,$username,$cid,$sec);
+                        my $reply=&Apache::lonnet::modifystudent
+                            ($domain,$username,$id,$amode,$password,
+                             $fname,$mname,$lname,$gen,$sec,$enddate,
+                             $startdate,$ENV{'form.forceid'});
+                        if ($reply ne 'ok') {
+                            $r->print('<p><b>'.
+                                      'Error enrolling '.$username.': '.
+                                      $reply.'</b></p>');
          		} else {
                             $count++; $flushc++;
                             $student{$username}=1;
@@ -833,146 +841,117 @@ sub upfile_drop_add {
                                 $flushc=0;
                             }
                         }
-                     } else {
-                            $r->print(
-                             "<p><b>No password for $username</b><p>");
-                     }
-                  }
-                 }                 
-              }
-              $r->print('<p>Processed Students: '.$count);
-# --------------------------------------------------------------- Drop students
-              if ($ENV{'form.fullup'} eq 'yes') {
-		 $r->print('<h3>Dropping Students</h3>');
-# ------------------------------------------------------- Get current classlist
-                 my $classlst=&Apache::lonnet::reply
-                 ('dump:'.$ENV{'course.'.$cid.'.domain'}.':'.
-	                  $ENV{'course.'.$cid.'.num'}.':classlist',
-	                  $ENV{'course.'.$cid.'.home'});
-                 my %currentlist=();
-                 my $now=time;
-                 unless ($classlst=~/^error\:/) {
-                     foreach (split(/\&/,$classlst)) {
-                        my ($name,$value)=split(/\=/,$_);
-                        my ($end,$start)=split(/\:/,
-                                            &Apache::lonnet::unescape($value));
-                        my $active=1;
-                        if (($end) && ($now>$end)) { $active=0; }
-                        if ($active) {
-		           $currentlist{&Apache::lonnet::unescape($name)}=1;
-                        }
-                     }
-# ------------------------------------------------ Now got up-to-date classlist
-                     foreach (@studentdata) {
- 	                my %entries=&Apache::loncommon::record_sep($_);
-                        unless (($entries{$fields{'username'}} eq '') ||
-                          (!defined($entries{$fields{'username'}}))) {
-			   delete($currentlist{
-                            $entries{$fields{'username'}}.':'.
-                            $domain});
-		        }
-                     }
-# ----------------------------------------------------------- Print out choices
-                     &show_drop_list($r,%currentlist);
-	         } else {
-                     $r->print(
-                  '<font color=red><h3>Could not access classlist: '.$classlst.
-                  '</h3></font>');
-                 }
-	     }
-# ------------------------------------------------------------------------ Done
-
-	  }
+                    } else {
+                        $r->print("<p><b>No password for $username</b><p>");
+                    }
+                }
+            }
+        } # end of foreach (@studentdata)
+        $r->print('<p>Processed Students: '.$count);
+        #####################################
+        #           Drop students           #
+        #####################################
+        if ($ENV{'form.fullup'} eq 'yes') {
+            $r->print('<h3>Dropping Students</h3>');
+            #  Get current classlist
+            my %currentlist=&get_current_classlist
+                ($ENV{'course.'.$cid.'.domain'},
+                 $ENV{'course.'.$cid.'.num'});
+            if (defined(%currentlist)) {
+                # Drop the students
+                foreach (@studentdata) {
+                    my %entries=&Apache::loncommon::record_sep($_);
+                    unless (($entries{$fields{'username'}} eq '') ||
+                            (!defined($entries{$fields{'username'}}))) {
+                        delete($currentlist{$entries{$fields{'username'}}.
+                                                ':'.$domain});
+                    }
+                }
+                # Print out list of dropped students
+                &show_drop_list($r,%currentlist);
+            } else {
+                $r->print('<font color=red>'.
+                          '<h3>Could not access classlist</h3></font>');
+            }
+        }
+    } # end of unless
 }
 
 # ================================================================== Phase four
-
 sub drop_student_list {
     my $r=shift;
     my $count=0;
-    foreach (keys %ENV) {
-	if ($_=~/^form\.drop\:/) {
-	    my ($dummy,$uname,$udom)=split(/\:/,$_);
-            &dropstudent($udom,$uname,$ENV{'request.course.id'});
-            $r->print('Dropped '.$uname.' at '.$udom.'<br>');
-            $count++;
-        }
+    foreach (@{$ENV{'form.droplist'}}) {
+        my ($uname,$udom)=split(/\:/,$_);
+        &modifystudent($udom,$uname,$ENV{'request.course.id'});
+        $r->print('Dropped '.$uname.' at '.$udom.'<br>');
+        $count++;
     }
     $r->print('<p><b>Dropped '.$count.' student(s).</b>');
     $r->print('<p>Re-enrollment will re-activate data.');
 }
 
 # ================================================================ Main Handler
-
 sub handler {
-   my $r=shift;
-   $Apache::lonxml::debug=1;
-   if ($r->header_only) {
-      $r->content_type('text/html');
-      $r->send_http_header;
-      return OK;
-   }
-
-# ----------------------------------------------------- Needs to be in a course
-
-   if (($ENV{'request.course.fn'}) && 
-       (&Apache::lonnet::allowed('cst',$ENV{'request.course.id'}))) {
-
-# ------------------------------------------------------------------ Start page
-      $r->content_type('text/html');
-      $r->send_http_header;
-      &header($r);
-
-# --------------------------------------------------- Phase one, initial screen
-      unless ($ENV{'form.phase'}) {
-	  &menu_phase_one($r);
-      }
-# ------------------------------------------------------------------- Phase two
-
-      if ($ENV{'form.associate'} eq 'Reverse Association') {
-	$ENV{'form.phase'} = 'two';
-	if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {
-	  $ENV{'form.upfile_associate'} = 'reverse';
-	} else {
-	  $ENV{'form.upfile_associate'} = 'forward';
-	}
-      }
-      if ($ENV{'form.phase'} eq 'two') {
-	 if ($ENV{'form.fileupload'}) {
-	     &menu_phase_two_upload($r);
-         } elsif ($ENV{'form.enroll'}) {
-             &menu_phase_two_enroll($r);
-         } elsif ($ENV{'form.drop'}) {
-             &menu_phase_two_drop($r);
-         }
-      }
-
-
-
-
-# ----------------------------------------------------------------- Phase three
-      if ($ENV{'form.phase'} eq 'three') {
-	  if ($ENV{'form.datatoken'}) {
-	      &upfile_drop_add($r);
-          }
-      }
-# ------------------------------------------------------------------ Phase four
-      if ($ENV{'form.phase'} eq 'four') {
-	  &drop_student_list($r);
-      }
-# ------------------------------------------------------------------ Phase five
-      if ($ENV{'form.phase'} eq 'five') {
-	  &enroll_single_student($r);
-      }
-# ------------------------------------------------------------------------- End
-      $r->print('</form></body></html>');
-   } else {
-# ----------------------------- Not in a course, or not allowed to modify parms
-      $ENV{'user.error.msg'}=
-        "/adm/dropadd:cst:0:0:Cannot drop or add students";
-      return HTTP_NOT_ACCEPTABLE; 
-   }
-   return OK;
+    my $r=shift;
+    $Apache::lonxml::debug=1;
+    if ($r->header_only) {
+        $r->content_type('text/html');
+        $r->send_http_header;
+        return OK;
+    }
+    #  Needs to be in a course
+    if (($ENV{'request.course.fn'}) && 
+        (&Apache::lonnet::allowed('cst',$ENV{'request.course.id'}))) {
+        # Start page
+        $r->content_type('text/html');
+        $r->send_http_header;
+        &header($r);
+        # Phase one, initial screen
+        unless ($ENV{'form.phase'}) {
+            &menu_phase_one($r);
+        }
+        # Phase two
+        if ($ENV{'form.associate'} eq 'Reverse Association') {
+            $ENV{'form.phase'} = 'two';
+            if ( $ENV{'form.upfile_associate'} ne 'reverse' ) {
+                $ENV{'form.upfile_associate'} = 'reverse';
+            } else {
+                $ENV{'form.upfile_associate'} = 'forward';
+            }
+        }
+        if ($ENV{'form.phase'} eq 'two') {
+            if ($ENV{'form.fileupload'}) {
+                &menu_phase_two_upload($r);
+            } elsif ($ENV{'form.enroll'}) {
+                &menu_phase_two_enroll($r);
+            } elsif ($ENV{'form.drop'}) {
+                &menu_phase_two_drop($r);
+            }
+        }
+        # Phase three
+        if ($ENV{'form.phase'} eq 'three') {
+            if ($ENV{'form.datatoken'}) {
+                &upfile_drop_add($r);
+            }
+        }
+        # Phase four
+        if ($ENV{'form.phase'} eq 'four') {
+            &drop_student_list($r);
+        }
+        # Phase five
+        if ($ENV{'form.phase'} eq 'five') {
+            &enroll_single_student($r);
+        }
+         # End
+        $r->print('</form></body></html>');
+    } else {
+        # Not in a course, or not allowed to modify parms
+        $ENV{'user.error.msg'}=
+            "/adm/dropadd:cst:0:0:Cannot drop or add students";
+        return HTTP_NOT_ACCEPTABLE; 
+    }
+    return OK;
 }
 
 1;