# The LearningOnline Network with CAPA
# Handler to drop and add students in courses
#
# (Handler to set parameters for assessments
#
# (Handler to resolve ambiguous file locations
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 10/11,10/12,10/16 Gerd Kortemeyer)
#
# 11/20,11/21,11/22,11/23,11/24,11/25,11/27,11/28,
# 12/08,12/12 Gerd Kortemeyer)
#
# 12/26, 12/27 Gerd Kortemeyer
package Apache::londropadd;
use strict;
use Apache::lonnet;
use Apache::Constants qw(:common :http REDIRECT);
# ================================================================ Main Handler
sub handler {
my $r=shift;
if ($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;
$r->print(<<ENDHEAD);
<html>
<head>
<title>LON-CAPA Student Drop/Add</title>
</head>
<body bgcolor="#FFFFFF">
<img align=right src=/adm/lonIcons/lonlogos.gif>
<h1>Drop/Add Students</h1>
<form method="post" enctype="multipart/form-data"
action="/adm/dropadd" name="studentform">
<h2>Course: $ENV{'course.'.$ENV{'request.course.id'}.'.description'}</h2>
ENDHEAD
# --------------------------------------------------- Phase one, initial screen
unless ($ENV{'form.phase'}) {
$r->print(<<ENDUPFORM);
<input type=hidden name=phase value=two>
<hr>
<h3>Upload a courselist</h3>
<input type=file name=upfile size=50>
<br>Type: <select name=upfiletype>
<option value=csv>CSV (comma separated values, spreadsheet)</option>
<option value=space>Space separated</option>
<option value=tab>Tabulator separated</option>
<option value=xml>HTML/XML</option>
</select>
<p><input type=submit name=fileupload value="Upload Courselist">
<hr>
<h3>Enroll a single student</h3>
<p><input type=submit name=enroll value="Enroll Student">
<hr>
<h3>Drop a student</h3>
<p><input type=submit name=drop value="Drop Student">
ENDUPFORM
}
# ------------------------------------------------------------------- Phase two
if ($ENV{'form.phase'} eq 'two') {
if ($ENV{'form.fileupload'}) {
my $datatoken=Apache::lonnet::reply(
'tmpput:'.Apache::lonnet::escape($ENV{'form.upfile'}),
$r->dir_config('lonHostID'));
my $separator='';
my $remove='';
if ($ENV{'form.upfiletype'} eq 'csv') {
$separator='\"\,\s*\"';
$remove='"';
} elsif ($ENV{'form.upfiletype'} eq 'space') {
$separator='\s+';
} elsif ($ENV{'form.upfiletype'} eq 'tab') {
$separator='\t+';
} elsif ($ENV{'form.upfiletype'} eq 'xml') {
}
my @lines=split(/\n/,$ENV{'form.upfile'});
my $total=$#lines+1;
$ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
my $krbdefdom=$1;
$krbdefdom=~tr/a-z/A-Z/;
$r->print(<<ENDPICK);
<input type=hidden name=phase value=three>
<input type=hidden name=datatoken value="$datatoken">
<input type=hidden name=upfiletype value=$ENV{'form.upfiletype'}>
<hr>
<h3>Identify fields</h3>
Total number of students: $total
<script>
function verify(vf) {
var founduname=0;
var foundpwd=0;
var foundname=0;
var foundid=0;
var foundsec=0;
var foundatype=0;
var tw;
var message='';
for (i=0;i<=vf.nfields.value;i++) {
tw=eval('vf.f'+i+'.selectedIndex');
if (tw==1) { founduname=1; }
if ((tw>=2) && (tw<=6)) { foundname=1; }
if (tw==7) { foundid=1; }
if (tw==8) { foundsec=1; }
if (tw==9) { foundpwd=1; }
}
if (founduname==0) {
alert('You need to specify at least the username field');
return;
}
if (vf.login[0].checked) {
foundatype=1;
if (vf.krbdom.value=='') {
alert('You need to specify the Kerberos domain');
return;
}
}
if (vf.login[1].checked) {
foundatype=1;
if ((vf.intpwd.value=='') && (foundpwd==0)) {
alert('You need to specify the initial password');
return;
}
}
if (foundatype==0) {
alert('You need to set the login type');
return;
}
if (foundname==0) { message='No name fields specified. '; }
if (foundid==0) { message+='No ID or student number field specified. '; }
if (foundsec==0) { message+='No section or group field specified. '; }
message+='Complete enrollment?';
if (confirm(message)) {
vf.submit();
}
}
function flip(vf,tf) {
var nw=eval('vf.f'+tf+'.selectedIndex');
var i;
for (i=0;i<=vf.nfields.value;i++) {
if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
eval('vf.f'+i+'.selectedIndex=0;')
}
}
if (nw==2) {
for (i=0;i<=vf.nfields.value;i++) {
if ((eval('vf.f'+i+'.selectedIndex')>=3) &&
(eval('vf.f'+i+'.selectedIndex')<=6)) {
eval('vf.f'+i+'.selectedIndex=0;')
}
}
}
if ((nw>=3) && (nw<=6)) {
for (i=0;i<=vf.nfields.value;i++) {
if (eval('vf.f'+i+'.selectedIndex')==2) {
eval('vf.f'+i+'.selectedIndex=0;')
}
}
}
if (nw==9) {
vf.login[1].checked=true;
vf.intpwd.value='';
vf.krbdom.value='';
}
}
function clearpwd(vf) {
var i;
for (i=0;i<=vf.nfields.value;i++) {
if (eval('vf.f'+i+'.selectedIndex')==9) {
eval('vf.f'+i+'.selectedIndex=0;')
}
}
}
function setkrb(vf) {
if (vf.krbdom.value!='') {
clearpwd(vf);
vf.login[0].checked=true;
vf.krbdom.value=vf.krbdom.value.toUpperCase();
vf.intpwd.value='';
}
}
function setint(vf) {
if (vf.intpwd.value!='') {
clearpwd(vf);
vf.login[1].checked=true;
vf.krbdom.value='';
}
}
function clickkrb(vf) {
vf.krbdom.value='$krbdefdom';
clearpwd(vf);
vf.intpwd.value='';
}
function clickint(vf) {
vf.krbdom.value='';
}
</script>
<table border=2><tr><th>Field</th><th>Samples</th></tr>
ENDPICK
my @sone; my @stwo; my @sthree; my $nfields=0;
if ($#lines>=0) {
$lines[0]=~s/^$remove//;
$lines[0]=~s/$remove$//;
@sone=split(/$separator/,$lines[0]);
$nfields=$#sone;
if ($#lines>=1) {
$lines[1]=~s/^$remove//;
$lines[1]=~s/$remove$//;
@stwo=split(/$separator/,$lines[1]);
$nfields=$#stwo;
}
if ($#lines>=2) {
$lines[2]=~s/^$remove//;
$lines[2]=~s/$remove$//;
@sthree=split(/$separator/,$lines[2]);
$nfields=$#sthree;
}
my $i;
for ($i=0;$i<=$nfields;$i++) {
$r->print('<tr><td><select name=f'.$i.
' onChange="flip(this.form,'.$i.');">');
map {
my ($value,$display)=split(/\:/,$_);
$r->print('<option value='.$value.'>'.$display.
'</option>');
} ('none: ','username:Username',
'names:Last Name, First Names',
'fname:First Name','mname:Middle Names/Initials',
'lname:Last Name','gen:Generation',
'id:ID/Student Number','sec:Group/Section',
'ipwd:Initial Password');
$r->print('</select></td><td>');
if (defined($sone[$i])) {
$r->print($sone[$i]."</br>\n");
}
if (defined($stwo[$i])) {
$r->print($stwo[$i]."</br>\n");
}
if (defined($sthree[$i])) {
$r->print($sthree[$i]."</br>\n");
}
$r->print('</td></tr>');
}
}
$r->print(<<ENDPICK);
</table>
<input type=hidden name=nfields value=$nfields>
<h3>Login Type</h3>
<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);">
Internally authenticated (with initial password
<input type=text size=10 name=intpwd onChange="setint(this.form);">)<p>
<input type=button onClick="verify(this.form)" value="Submit Selection">
ENDPICK
} elsif ($ENV{'form.enroll'}) {
} elsif ($ENV{'form.drop'}) {
}
}
# ----------------------------------------------------------------- Phase three
if ($ENV{'form.phase'} eq 'three') {
if ($ENV{'form.datatoken'}) {
my $separator='';
my $remove='';
if ($ENV{'form.upfiletype'} eq 'csv') {
$separator='\"\,\s*\"';
$remove='"';
} elsif ($ENV{'form.upfiletype'} eq 'space') {
$separator='\s+';
} elsif ($ENV{'form.upfiletype'} eq 'tab') {
$separator='\t+';
} elsif ($ENV{'form.upfiletype'} eq 'xml') {
}
map {
my $line=$_;
$line=~s/^$remove//;
$line=~s/$remove$//;
my @entries=split(/$separator/,$line);
$r->print($entries[8].'<br>');
} split(/\n/,
&Apache::lonnet::unescape(Apache::lonnet::reply(
'tmpget:'.$ENV{'form.datatoken'},$r->dir_config('lonHostID')))
);
}
}
# ------------------------------------------------------------------------- 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;
__END__
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