# The LearningOnline Network with CAPA
# Handler to drop and add students in courses
#
# $Id: londropadd.pm,v 1.45.2.1 2002/08/22 21:22:30 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# (Handler to set parameters for assessments
#
# (Handler to resolve ambiguous file locations
#
# (TeX Content Handler
#
# YEAR=2000
# 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)
#
# 12/26,12/27,12/28,
# YEAR=2001
# 01/01/01,01/15,02/10,02/13,02/14,02/22 Gerd Kortemeyer
# 8/6 Scott Harrison
# Guy Albertelli
# 9/25 Gerd Kortemeyer
# 12/19 Guy Albertelli
# YEAR=2002
# 1/4 Gerd Kortemeyer
package Apache::londropadd;
use strict;
use Apache::lonnet();
use Apache::loncommon();
use Apache::Constants qw(:common :http REDIRECT);
# ================================================================ Print header
sub header {
return(<<ENDHEAD);
<html>
<head>
<title>LON-CAPA Enrollment Manager</title>
</head>
<body bgcolor="#FFFFFF">
<img align=right src=/adm/lonIcons/lonlogos.gif>
<h1>$ENV{'course.'.$ENV{'request.course.id'}.'.description'}</h1>
<h2>Enrollment Manager</h2>
<form method="post" enctype="multipart/form-data"
action="/adm/dropadd" name="studentform">
ENDHEAD
}
# =========== Drop student from all sections of a course, except optional $csec
sub modifystudent {
my ($udom,$unam,$courseid,$csec,$desiredhost)=@_;
# 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 "$1" if ($tmp =~ /^(con_lost|error|no_such_host)/i);
# Go through the roles looking for enrollment in this course
my $result = '';
foreach my $course (keys(%roles)) {
if ($course=~/^$courseid(?:\/)*(?:\s+)*(\w+)*\_st$/) {
# We are in this course
my $section=$1;
$section='' if ($course eq $courseid.'_st');
if ( ((!$section) && (!$csec)) || ($section ne $csec) ) {
my (undef,$end,$start)=split(/\_/,$roles{$course});
my $now=time;
if (!($start && ($now<$start)) || !($end && ($now>$end))) {
my $reply=&Apache::lonnet::modifystudent
($udom,$unam,'','','','','','','',
$section,time,undef,undef,$desiredhost);
$result .= $reply.':';
}
}
}
}
if ($result eq '') {
$result eq 'Unable to find section for this student';
} else {
$result =~ s/(ok:)+/ok/g;
}
return $result;
}
# ============ build a domain and server selection form
sub domain_form {
my ($defdom) = @_;
# Set up domain and server selection forms
#
# Get the domains
my @domains = &Apache::loncommon::get_domains();
# build up the menu information to be passed to
# &Apache::loncommon::linked_select_forms
my %select_menus;
foreach my $dom (@domains) {
# set up the text for this domain
$select_menus{$dom}->{'text'}= $dom;
# we want a choice of 'default' as the default in the second menu
$select_menus{$dom}->{'default'}= 'default';
$select_menus{$dom}->{'select2'}->{'default'} = 'default';
# Now build up the other items in the second menu
my %servers = &Apache::loncommon::get_library_servers($dom);
foreach my $server (keys(%servers)) {
$select_menus{$dom}->{'select2'}->{$server}
= "$server $servers{$server}";
}
}
my $result = &Apache::loncommon::linked_select_forms
('studentform',' with home server ',$defdom,
'lcdomain','lcserver',\%select_menus);
return $result;
}
# ============================================================== Menu Phase One
sub menu_phase_one {
my $r=shift;
my $upfile_select=&Apache::loncommon::upfile_select_html();
my $create_classlist_help =
&Apache::loncommon::help_open_topic("Course_Create_Class_List",
"How do I create a class list from a spreadsheet");
my $create_csv_help =
&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
"How do I create a CSV file from a spreadsheet");
$r->print(<<ENDUPFORM);
<input type=hidden name=phase value=two>
<hr>
<h3>Upload a courselist</h3>
$upfile_select
<p><input type=submit name="fileupload" value="Upload Courselist">
<br />
$create_classlist_help <br />
$create_csv_help
<hr />
<h3>Enroll a single student</h3>
<p><input type=submit name="enroll" value="Enroll Student"></p>
<hr />
<h3>Classlist</h3>
<p><input type=submit name="view" value="View Class List">
<input type=submit name="viewcsv" value="Comma Separated Class List"></p>
<hr />
<h3>Drop students</h3>
<p><input type=submit name="drop" value="Selection List"></p>
ENDUPFORM
}
sub phase_two_header {
my ($r,$datatoken,$distotal,$krbdefdom)=@_;
my $javascript;
if ($ENV{'form.upfile_associate'} eq 'reverse') {
$javascript=&phase_two_javascript_reverse_associate();
} else {
$javascript=&phase_two_javascript_forward_associate();
}
my $javascript_validations=&javascript_validations($krbdefdom);
$r->print(<<ENDPICK);
<h3>Uploading Class List</h3>
<hr>
<h3>Identify fields</h3>
Total number of records found in file: $distotal <hr />
Enter as many fields as you can. The system will inform you and bring you back
to this page if the data selected is insufficient to run your class.<hr />
<input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
<input type="hidden" name="associate" value="" />
<input type="hidden" name="phase" value="three" />
<input type="hidden" name="datatoken" value="$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'}" />
<hr />
<script type="text/javascript" language="Javascript">
$javascript
$javascript_validations
</script>
ENDPICK
}
sub javascript_validations {
my ($krbdefdom)=@_;
my %param = ( formname => 'studentform',
kerb_def_dom => $krbdefdom );
my $authheader = &Apache::loncommon::authform_header(%param);
return (<<ENDPICK);
function verify_message (vf,founduname,foundpwd,foundname,foundid,foundsec) {
var foundatype=0;
var message='';
if (founduname==0) {
alert('You need to specify the username field');
return;
}
if (current.radiovalue == null || current.radiovalue == 'nochange') {
// They did not check any of the login radiobuttons.
alert('You must choose an authentication type');
return;
}
foundatype=1;
if (current.argfield == null || current.argfield == '') {
var alertmsg = '';
switch (current.value) {
case 'krb':
alertmsg = 'You need to specify the Kerberos domain';
break;
case 'loc':
case 'fsys':
alertmsg = 'You need to specify the initial password';
break;
case 'fsys':
alertmsg = '';
break;
default:
alertmsg = '';
}
if (alertmsg != '') {
alert(alertmsg);
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. '; }
if (vf.startdate.value=='') {
message+='No starting date set. ';
}
if (vf.enddate.value=='') {
message+='No ending date set. ';
}
if ((vf.enddate.value!='') && (vf.startdate.value!='')) {
if (Math.round(vf.enddate.value)<Math.round(vf.startdate.value)) {
alert('Ending date is before starting date');
return;
}
}
if (message!='') {
message+='Continue enrollment?';
if (confirm(message)) {
pclose();
vf.submit();
}
} else {
pclose();
vf.submit();
}
}
function pclose() {
parmwin=window.open("/adm/rat/empty.html","LONCAPAparms",
"height=350,width=350,scrollbars=no,menubar=no");
parmwin.close();
}
function pjump(type,dis,value,marker,ret,call) {
parmwin=window.open("/adm/rat/parameter.html?type="+escape(type)
+"&value="+escape(value)+"&marker="+escape(marker)
+"&return="+escape(ret)
+"&call="+escape(call)+"&name="+escape(dis),"LONCAPAparms",
"height=350,width=350,scrollbars=no,menubar=no");
}
function dateset() {
if (document.studentform.pres_marker.value=='end') {
document.studentform.enddate.value=
document.studentform.pres_value.value;
}
if (document.studentform.pres_marker.value=='start') {
document.studentform.startdate.value=
document.studentform.pres_value.value;
}
pclose();
}
$authheader
ENDPICK
}
sub phase_two_javascript_forward_associate {
return(<<ENDPICK);
function verify(vf) {
var founduname=0;
var foundpwd=0;
var foundname=0;
var foundid=0;
var foundsec=0;
var tw;
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; }
}
verify_message(vf,founduname,foundpwd,foundname,foundid,foundsec);
}
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 (tf==1 && nw!=0) {
for (i=2;i<=5;i++) {
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) {
changed_radio('int',document.studentform);
set_auth_radio_buttons('int',document.studentform);
vf.intarg.value='';
vf.krbarg.value='';
vf.locarg.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;')
}
}
}
ENDPICK
}
sub phase_two_javascript_reverse_associate {
return(<<ENDPICK);
function verify(vf) {
var founduname=0;
var foundpwd=0;
var foundname=0;
var foundid=0;
var foundsec=0;
var tw;
for (i=0;i<=vf.nfields.value;i++) {
tw=eval('vf.f'+i+'.selectedIndex');
if (i==0 && tw!=0) { founduname=1; }
if (((i>=1) && (i<=5)) && tw!=0 ) { foundname=1; }
if (i==6 && tw!=0) { foundid=1; }
if (i==7 && tw!=0) { foundsec=1; }
if (i==8 && tw!=0) { foundpwd=1; }
}
verify_message(vf,founduname,foundpwd,foundname,foundid,foundsec);
}
function flip(vf,tf) {
var nw=eval('vf.f'+tf+'.selectedIndex');
var i;
// picked the all one one name field, reset the other name ones to blank
if (tf==1 && nw!=0) {
for (i=2;i<=5;i++) {
eval('vf.f'+i+'.selectedIndex=0;')
}
}
//picked one of the piecewise name fields, reset the all in
//one field to blank
if ((tf>=2) && (tf<=5) && (nw!=0)) {
eval('vf.f1.selectedIndex=0;')
}
// intial password specified, pick internal authentication
if (tf==8 && nw!=0) {
changed_radio('int',document.studentform);
set_auth_radio_buttons('int',document.studentform);
vf.krbarg.value='';
vf.intarg.value='';
vf.locarg.value='';
}
}
function clearpwd(vf) {
var i;
if (eval('vf.f8.selectedIndex')!=0) {
eval('vf.f8.selectedIndex=0;')
}
}
ENDPICK
}
sub phase_two_end {
my ($r,$i,$keyfields,$defdom,$today,$halfyear)=@_;
my %param = ( formname => 'document.studentform');
my $krbform = &Apache::loncommon::authform_kerberos(%param);
my $intform = &Apache::loncommon::authform_internal(%param);
my $locform = &Apache::loncommon::authform_local(%param);
my $domform = &domain_form($defdom);
$r->print(<<ENDPICK);
</table>
<input type=hidden name=nfields value=$i>
<input type=hidden name=keyfields value="$keyfields">
<h3>Login Type</h3>
<p>Note: this will not take effect if the user already exists</p>
<p>
$krbform
</p>
<p>
$intform
</p>
<p>
$locform
</p>
<h3>LON-CAPA Domain for Students</h3>
LON-CAPA domain: $domform <p>
<h3>Starting and Ending Dates</h3>
<input type="hidden" value='' name="pres_value" >
<input type="hidden" value='' name="pres_type" >
<input type="hidden" value='' name="pres_marker" >
<input type="hidden" value='$today' name="startdate" >
<input type="hidden" value='$halfyear' name="enddate" >
<a
href="javascript:pjump('date_start','Enrollment Starting Date',document.studentform.startdate.value,'start','studentform.pres','dateset');"
>Set Starting Date</a><p>
<a
href="javascript:pjump('date_end','Enrollment Ending Date',document.studentform.enddate.value,'end','studentform.pres','dateset');"
>Set Ending Date</a><p>
<h3>Full Update</h3>
<input type=checkbox name=fullup value=yes> Full update
(also print list of users not enrolled anymore)<p>
<h3>ID/Student Number</h3>
<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="javascript: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;
my $datatoken;
if (!$ENV{'form.datatoken'}) {
$datatoken=&Apache::loncommon::upfile_store($r);
} else {
$datatoken=$ENV{'form.datatoken'};
&Apache::loncommon::load_tmp_file($r);
}
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) {
my @d=(['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']);
if ($ENV{'form.upfile_associate'} eq 'reverse') {
&Apache::loncommon::csv_print_samples($r,\@records);
$i=&Apache::loncommon::csv_print_select_table($r,\@records,\@d);
foreach (@d) { $keyfields.=$_->[0].','; }
chop($keyfields);
} else {
unshift(@d,['none','']);
$i=&Apache::loncommon::csv_samples_select_table($r,\@records,\@d);
my %sone=&Apache::loncommon::record_sep($records[0]);
$keyfields=join(',',sort(keys(%sone)));
}
}
&phase_two_end($r,$i,$keyfields,$defdom,$today,$halfyear);
}
# ======================================================= Enroll single student
sub enroll_single_student {
my $r=shift;
$r->print('<h3>Enrolling Student</h3>');
$r->print('<p>Enrolling '.$ENV{'form.cuname'}." in domain ".
$ENV{'form.lcdomain'}.'</p>');
if (($ENV{'form.cuname'})&&($ENV{'form.cuname'}!~/\W/)&&
($ENV{'form.lcdomain'})&&($ENV{'form.lcdomain'}!~/\W/)) {
# Deal with home server selection
my $domain=$ENV{'form.lcdomain'};
my $desiredhost = $ENV{'form.lcserver'};
if (lc($desiredhost) eq 'default') {
$desiredhost = undef;
} else {
my %home_servers =&Apache::loncommon::get_library_servers($domain);
if (! exists($home_servers{$desiredhost})) {
$r->print('<font color="#ff0000">Error:</font>'.
'Invalid home server specified');
return;
}
}
$r->print(" with server $desiredhost :") if (defined($desiredhost));
# End of home server selection logic
my $amode='';
my $genpwd='';
if ($ENV{'form.login'} eq 'krb') {
$amode='krb';
$amode.=$ENV{'form.krbver'};
$genpwd=$ENV{'form.krbarg'};
} elsif ($ENV{'form.login'} eq 'int') {
$amode='internal';
$genpwd=$ENV{'form.intarg'};
} elsif ($ENV{'form.login'} eq 'loc') {
$amode='localauth';
$genpwd=$ENV{'form.locarg'};
if (!$genpwd) { $genpwd=" "; }
}
my $home = &Apache::lonnet::homeserver($ENV{'form.cuname'},
$ENV{'form.lcdomain'});
if ((($amode) && ($genpwd)) || ($home ne 'no_host')) {
&modifystudent($ENV{'form.lcdomain'},$ENV{'form.cuname'},
$ENV{'request.course.id'},$ENV{'form.csec'},
$desiredhost);
$r->print(&Apache::lonnet::modifystudent(
$ENV{'form.lcdomain'},$ENV{'form.cuname'},
$ENV{'form.cstid'},$amode,$genpwd,
$ENV{'form.cfirst'},$ENV{'form.cmiddle'},
$ENV{'form.clast'},$ENV{'form.cgen'},
$ENV{'form.csec'},$ENV{'form.enddate'},
$ENV{'form.startdate'},$ENV{'form.forceid'},
$desiredhost));
} else {
$r->print('<p><font color="#ff0000">ERROR</font> '.
'Invalid login mode or password. '.
'Unable to enroll '.$ENV{'form.cuname'}.'.</p>');
}
} else {
$r->print('Invalid username or domain');
}
}
# ======================================================= Menu Phase Two Enroll
sub menu_phase_two_enroll {
my $r=shift;
$r->print("<h3>Enroll One Student</h3>");
my ($krbdefdom) = $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
$krbdefdom=~tr/a-z/A-Z/;
my $today = time;
my $halfyear = $today+15552000;
my $defdom=$r->dir_config('lonDefDomain');
my $javascript_validations=&javascript_validations($krbdefdom);
# Set up authentication forms
my %param = ( formname => 'document.studentform');
my $krbform = &Apache::loncommon::authform_kerberos(%param);
my $intform = &Apache::loncommon::authform_internal(%param);
my $locform = &Apache::loncommon::authform_local(%param);
# Set up domain selection form
my $domform = &domain_form($defdom);
# Print it all out
$r->print(<<ENDSENROLL);
<script type="text/javascript" language="Javascript">
function verify(vf) {
var founduname=0;
var foundpwd=0;
var foundname=0;
var foundid=0;
var foundsec=0;
var tw;
if ((typeof(vf.cuname.value) !="undefined") && (vf.cuname.value!='') &&
(typeof(vf.lcdomain.value)!="undefined") && (vf.lcdomain.value!='')) {
founduname=1;
}
if ((typeof(vf.cfirst.value)!="undefined") && (vf.cfirst.value!='') &&
(typeof(vf.clast.value) !="undefined") && (vf.clast.value!='')) {
foundname=1;
}
if ((typeof(vf.csec.value)!="undefined") && (vf.csec.value!='')) {
foundsec=1;
}
if ((typeof(vf.cstid.value)!="undefined") && (vf.cstid.value!='')) {
foundid=1;
}
if (founduname==0) {
alert('You need to specify at least the username and domain fields');
return;
}
verify_message(vf,founduname,foundpwd,foundname,foundid,foundsec);
}
$javascript_validations
function clearpwd(vf) {
//nothing else needs clearing
}
</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>ID/Student Number: <input type="text" name="cstid" size="10"></p>
<p>Group/Section: <input type=text name=csec size=5></p>
<h3>Login Data</h3>
<p>Username: <input type="text" name="cuname" size="15"></p>
<p>Domain: $domform</p>
<p>Note: login settings below will not take effect if the user already exists
</p><p>
$krbform
</p><p>
$intform
</p><p>
$locform
</p><p>
<h3>Starting and Ending Dates</h3>
<input type="hidden" value='' name="pres_value">
<input type="hidden" value='' name="pres_type">
<input type="hidden" value='' name="pres_marker">
<input type="hidden" value='$today' name=startdate>
<input type="hidden" value='$halfyear' name=enddate>
</p><p>
<a
href="javascript:pjump('date_start','Enrollment Starting Date',document.studentform.startdate.value,'start','studentform.pres','dateset');"
>Set Starting Date</a>
</p><p>
<a
href="javascript:pjump('date_end','Enrollment Ending Date',document.studentform.enddate.value,'end','studentform.pres','dateset');"
>Set Ending Date</a>
</p><p>
<h3>ID/Student Number</h3>
<input type="checkbox" name="forceid" value="yes">
Disable ID/Student Number Safeguard and Force Change of Conflicting IDs
(only do if you know what you are doing)<p>
<input type="button" onClick="verify(this.form)" value="Enroll as student"><br>
<input type="hidden" name="phase" value="five">
</p>
ENDSENROLL
}
# =================================================== get the current classlist
sub get_current_classlist {
my ($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 (undef,%currentlist);
} else {
$tmp =~ s/^error://;
return ($tmp,undef);
}
}
# ========================================================= Menu Phase Two Drop
sub menu_phase_two_drop {
my $r=shift;
$r->print("<h3>Drop Students</h3>");
my $cid=$ENV{'request.course.id'};
my ($error,%currentlist)=&get_current_classlist
($ENV{'course.'.$cid.'.domain'},$ENV{'course.'.$cid.'.num'});
if (defined($error)) {
if ($error =~ /^No such file or directory/) {
$r->print("There are no students currently enrolled.\n");
} else {
$r->print("<pre>ERROR:$error</pre>");
}
} elsif (!defined(%currentlist)) {
$r->print("There are no students currently enrolled.\n");
} else {
# Print out the available choices
&show_drop_list($r,%currentlist);
}
}
# ============================================== view classlist
sub menu_phase_two_view {
my $r=shift;
$r->print("<h3>Current Classlist</h3>");
my $cid=$ENV{'request.course.id'};
my ($error,%currentlist)=&get_current_classlist
($ENV{'course.'.$cid.'.domain'},$ENV{'course.'.$cid.'.num'});
if (defined($error)) {
if ($error =~ /^No such file or directory/) {
$r->print("There are no students currently enrolled.\n");
} else {
$r->print("<pre>ERROR:$error</pre>");
}
} elsif (!defined(%currentlist)) {
$r->print("There are no students currently enrolled.\n");
} else {
# Print out the available choices
&show_class_list($r,'view',%currentlist);
}
}
# ============================================== view classlist
sub menu_phase_two_viewcsv {
my $r=shift;
my $cid=$ENV{'request.course.id'};
my ($error,%currentlist)=&get_current_classlist
($ENV{'course.'.$cid.'.domain'},$ENV{'course.'.$cid.'.num'});
if (defined($error)) {
if ($error =~ /^No such file or directory/) {
$r->print("There are no students currently enrolled.\n");
} else {
$r->print("<pre>ERROR:$error</pre>");
}
} elsif (!defined(%currentlist)) {
$r->print("There are no students currently enrolled.\n");
} else {
&show_class_list($r,'csv',%currentlist);
}
}
# =================================================== Show student list to drop
sub show_class_list {
my ($r,$mode,%currentlist)=@_;
my $cid=$ENV{'request.course.id'};
# Print out header
if ($mode eq 'view') {
$r->print(<<END);
<p>
<table border=2>
<tr><th>username</th><th>domain</th><th>ID</th>
<th>student name</th><th>generation</th><th>section</th></tr>
END
} elsif ($mode eq 'csv') {
$r->print(<<END);
username,domain,ID,last name,first name,middle name,generation,section
END
}
foreach (sort keys %currentlist) {
my ($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) {
$r->print( ($mode eq 'view' ?
'<tr><td colspan="6"><font color="red">' :'').
'Internal error: unable to get environment '.
'for '.$sname.' in domain '.$sdom.
( $mode eq 'view' ?'</font></td></tr>' :''));
} else {
if ($mode eq 'view') {
$r->print(<<"END");
<tr>
<td>$sname</td>
<td>$sdom</td>
<td>$reply{$sname}</td>
<td>$info{'lastname'}, $info{'firstname'} $info{'middlename'}</td>
<td>$info{'generation'}</td>
<td>$ssec</td>
</tr>
END
} elsif ($mode eq 'csv') {
my @line = ();
foreach ($sname,$sdom,$reply{$sname},
$info{'lastname'},$info{'firstname'},
$info{'middlename'},$info{'generation'},$ssec) {
push @line,&Apache::loncommon::csv_translate($_);
}
my $tmp = $";
$" = '","';
$r->print("\"@line\"\n");
$" = $tmp;
}
}
}
$r->print('</table><br>') if ($mode eq 'view');
}
# =================================================== Show student list to drop
sub show_drop_list {
my ($r,%currentlist)=@_;
my $cid=$ENV{'request.course.id'};
$r->print(<<'END');
<script>
function checkAll(field)
{
for (i = 0; i < field.length; i++)
field[i].checked = true ;
}
function uncheckAll(field)
{
for (i = 0; i < field.length; i++)
field[i].checked = false ;
}
</script>
<p>
<input type="hidden" name="phase" value="four">
<table border=2>
<tr><th> </th><th>username</th><th>domain</th>
<th>ID</th><th>student name</th><th>generation</th>
<th>section</th></tr>
END
foreach (sort keys %currentlist) {
my ($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(<<"END");
</p><p>
<input type="button" value="check all" onclick="javascript:checkAll(document.studentform.droplist)">
<input type="button" value="uncheck all" onclick="javascript:uncheckAll(document.studentform.droplist)">
<p><input type=submit value="Drop Students"></p>
END
}
# ================================================= 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=''; }
# Determine domain and desired host (home server)
my $domain=$ENV{'form.lcdomain'};
my $desiredhost = $ENV{'form.lcserver'};
if (lc($desiredhost) eq 'default') {
$desiredhost = undef;
} else {
my %home_servers = &Apache::loncommon::get_library_servers($domain);
if (! exists($home_servers{$desiredhost})) {
$r->print('<font color="#ff0000">Error:</font>'.
'Invalid home server specified');
return;
}
}
# Determine authentication mechanism
my $amode = '';
my $genpwd = '';
if ($ENV{'form.login'} eq 'krb') {
$amode='krb';
$amode.=$ENV{'form.krbver'};
$genpwd=$ENV{'form.krbarg'};
} elsif ($ENV{'form.login'} eq 'int') {
$amode='internal';
if ((defined($ENV{'form.intarg'})) && ($ENV{'form.intarg'})) {
$genpwd=$ENV{'form.intarg'};
}
} 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 {
# 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,
$desiredhost);
my $reply=&Apache::lonnet::modifystudent
($domain,$username,$id,$amode,$password,
$fname,$mname,$lname,$gen,$sec,$enddate,
$startdate,$ENV{'form.forceid'},$desiredhost);
if ($reply ne 'ok') {
$r->print('<p><b>'.
'Error enrolling '.$username.': '.
$reply.'</b></p>');
} else {
$count++; $flushc++;
$student{$username}=1;
$r->print('. ');
if ($flushc>15) {
$r->rflush;
$flushc=0;
}
}
} 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') {
$r->print('<h3>Dropping Students</h3>');
# Get current classlist
my ($error,%currentlist)=&get_current_classlist
($ENV{'course.'.$cid.'.domain'},
$ENV{'course.'.$cid.'.num'});
if (defined($error)) {
$r->print('<pre>ERROR:$error</pre>');
}
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("There are no students currently enrolled.\n");
}
}
} # end of unless
}
# ================================================================== Phase four
sub drop_student_list {
my $r=shift;
my $count=0;
my @droplist;
if (ref($ENV{'form.droplist'})) {
@droplist = @{$ENV{'form.droplist'}};
} else {
@droplist = ($ENV{'form.droplist'});
}
foreach (@droplist) {
my ($uname,$udom)=split(/\:/,$_);
my $result = &modifystudent($udom,$uname,$ENV{'request.course.id'});
if ($result eq 'ok' || $result eq 'ok:') {
$r->print('Dropped '.$uname.' at '.$udom.'<br>');
} else {
$r->print('Error dropping '.$uname.' at '.$udom.': '.$result.
'<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 $r=shift;
if ($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
$r->content_type('text/html') if (! exists($ENV{'form.viewcsv'}));
$r->send_http_header;
$r->print(&header()) if (! exists($ENV{'form.viewcsv'}));
# 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);
} elsif ($ENV{'form.view'}) {
&menu_phase_two_view($r);
} elsif ($ENV{'form.viewcsv'}) {
&menu_phase_two_viewcsv($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
$r->print('</form></body></html>') if (! exists($ENV{'form.viewcsv'}));
} 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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