# Automated Enrollment manager
# $Id: Enrollment.pm,v 1.57 2021/12/28 02:04:35 raeburn 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/
#
package LONCAPA::Enrollment;
use lib '/home/httpd/lib/perl';
use Apache::loncoursedata;
use Apache::lonnet;
use Apache::loncommon();
use Apache::lonmsg;
use Apache::lonlocal;
use HTML::Entities;
use HTML::Parser;
use LONCAPA::Configuration;
use Math::Random;
use Time::Local;
use strict;
sub update_LC {
my ($dom,$crs,$adds,$drops,$startdate,$enddate,$authtype,$autharg,
$showcredits,$defaultcredits,$autofailsafe,$failsafe,$classesref,
$groupref,$logmsg,$newusermsg,$context,$phototypes) = @_;
# Get institutional code and title of this class
my %courseinfo = ();
&get_courseinfo($dom,$crs,\%courseinfo);
# Get current LON-CAPA student enrollment for this class
my $configvars = &LONCAPA::Configuration::read_conf('loncapa.conf');
my $cid = $dom."_".$crs;
my $roster = &Apache::loncoursedata::get_classlist($dom,$crs);
my $cend = &Apache::loncoursedata::CL_END;
my $cstart = &Apache::loncoursedata::CL_START;
my $stuid=&Apache::loncoursedata::CL_ID;
my $sec=&Apache::loncoursedata::CL_SECTION;
my $status=&Apache::loncoursedata::CL_STATUS;
my $type=&Apache::loncoursedata::CL_TYPE;
my $lockedtype=&Apache::loncoursedata::CL_LOCKEDTYPE;
my $credidx=&Apache::loncoursedata::CL_CREDITS;
my $instidx = &Apache::loncoursedata::CL_INSTSEC;
my @localstudents = ();
my @futurestudents = ();
my @activestudents = ();
my @excludedstudents = ();
my $currlist;
my $now = time;
foreach my $uname (keys %{$roster} ) {
if ($uname =~ m/^(.+):$dom$/) {
if ($$roster{$uname}[$status] eq "Active") {
push @activestudents, $1;
@{$$currlist{$1}} = @{$$roster{$uname}};
push @localstudents, $1;
} elsif ( ($$roster{$uname}[$cstart] > time) && ($$roster{$uname}[$cend] > time || $$roster{$uname}[$cend] == 0 || $$roster{$uname}[$cend] eq '') ) {
push @futurestudents, $1;
@{$$currlist{$1}} = @{$$roster{$uname}};
push @localstudents, $1;
} elsif ($$roster{$uname}[$lockedtype] == 1) {
push @excludedstudents, $1;
}
}
}
my $linefeed = '';
my $addresult = '';
my $dropresult = '';
my $switchresult = '';
my $photoresult = '';
if ($context eq "updatenow") {
$linefeed = "</li>\n<li>";
} elsif ($context eq "automated") {
$linefeed = "\n";
}
my $enrollcount = 0;
my $dropcount = 0;
my $switchcount = 0;
# Get role names
my %longroles = ();
open(FILE,"<$$configvars{'lonTabDir'}.'/rolesplain.tab");
my @rolesplain = <FILE>;
close(FILE);
foreach my $item (@rolesplain) {
if ($_ =~ /^(st|ta|ex|ad|in|cc|co):([\w\s]+):?([\w\s]*)/) {
if ($courseinfo{'type'} eq 'Community') {
unless($1 eq 'cc') {
$longroles{$1} = $3;
}
} else {
unless($1 eq 'co') {
$longroles{$1} = $2;
}
}
}
}
srand( time() ^ ($$ + ($$ << 15)) ); # Seed rand in case initial passwords have to be generated for new users.
# Get mapping of IDs to usernames for current LON-CAPA student enrollment for this class
my @LCids = ();
my %unameFromLCid = ();
foreach my $uname (sort keys %{$currlist}) {
my $stuID = $$currlist{$uname}[$stuid];
if (!grep/^$stuID$/,@LCids) {
push @LCids, $stuID;
@{$unameFromLCid{$stuID}} = ();
}
push @{$unameFromLCid{$stuID}},$uname;
}
# Get latest institutional enrollment for this class.
my %allenrolled = ();
my @reg_students = ();
my %place = &place_hash();
my %ucount = ();
my %enrollinfo = ();
my %classcount;
foreach my $class (@{$classesref}) {
my %enrolled = ();
&parse_classlist($$configvars{'lonDaemons'},$dom,$crs,$class,\%place,$$groupref{$class},\%enrolled);
$classcount{$class} = scalar(keys(%enrolled));
foreach my $uname (sort keys %enrolled ) {
if (!grep/^$uname$/,@reg_students) {
push @reg_students,$uname;
$ucount{$uname} = 0;
@{$allenrolled{$uname}} = ();
}
@{$allenrolled{$uname}[$ucount{$uname}]} = @{$enrolled{$uname}};
$ucount{$uname} ++;
}
}
# Check for multiple sections for a single student
my @okusers = ();
foreach my $uname (@reg_students) {
if (grep/^$uname$/,@excludedstudents) {
$$logmsg .= &mt('No re-enrollment for [_1] - user was previously manually unenrolled and locked.',$uname).$linefeed;
} elsif (@{$allenrolled{$uname}} > 1) {
my @sections = ();
my $saved;
for (my $i=0; $i<@{$allenrolled{$uname}}; $i++) {
my @stuinfo = @{$allenrolled{$uname}[$i]};
my $secnum = $stuinfo[ $place{'groupID'} ];
unless ($secnum eq '') {
unless (grep/^$secnum$/,@sections) {
$saved = $i;
push @sections,$secnum;
}
}
}
if (@sections == 0) {
@{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
push @okusers, $uname;
}
elsif (@sections == 1) {
@{$enrollinfo{$uname}} = @{$allenrolled{$uname}[$saved]};
push @okusers, $uname;
}
elsif (@sections > 1) {
$$logmsg .= &mt('[_1] appears in classlists for more than one section of this course, i.e. in sections: ',$uname);
foreach (@sections) {
$$logmsg .= " $_,";
}
chop($$logmsg);
$$logmsg .= '. '.&mt('Because of this ambiguity, no enrollment action was taken for this student.').$linefeed;
}
} else {
@{$enrollinfo{$uname}} = @{$allenrolled{$uname}[0]};
push @okusers, $uname;
}
}
# Get mapping of student/employee IDs to usernames for users in institutional data for this class
my @allINids = ();
my %unameFromINid = ();
foreach my $uname (@okusers) {
$enrollinfo{$uname}[ $place{'studentID'} ] =~ tr/A-Z/a-z/;
my $stuID = $enrollinfo{$uname}[ $place{'studentID'} ];
if (grep/^$stuID$/,@allINids) {
push @{$unameFromINid{$stuID}},$uname;
} else {
push @allINids, $stuID;
@{$unameFromINid{$stuID}} = $uname;
}
}
# Explicitly allow access to creation/modification of students and group membership changes
# when called as an automated process.
if ($context eq 'automated') {
$env{'allowed.cst'}='F';
$env{'allowed.mdg'}='F';
}
# Compare IDs with existing LON-CAPA enrollment for this class
foreach my $uname (@okusers) {
unless ($uname eq '') {
my %uidhash=&Apache::lonnet::idrget($dom,$uname);
my @stuinfo = @{$enrollinfo{$uname}};
my ($access,$added,$inststatus,$instsec);
my $credits;
if ($showcredits) {
$credits = $stuinfo[$place{'credits'}];
$credits =~ s/[^\d\.]//g;
if ($credits eq $defaultcredits) {
undef($credits);
}
}
$inststatus = $stuinfo[$place{inststatus}];
$instsec = $stuinfo[$place{instsec}];
if (grep/^$uname$/,@localstudents) {
# Check for studentID changes
if ( ($uidhash{$uname}) && ($uidhash{$uname} !~ /error\:/) ) {
unless ( ($uidhash{$uname}) eq ($stuinfo[ $place{studentID} ]) ) {
$$logmsg .= &mt('Change in ID for [_1]. StudentID in LON-CAPA system is [_2]; StudentID in institutional data is [_3].',$uname,$uidhash{$uname},$stuinfo[ $place{studentID} ]).$linefeed;
}
}
# Check for switch from manual to auto
unless (($$currlist{$uname}[$type] eq "auto") || ($$currlist{$uname}[$lockedtype] eq "1") || (!$adds) ) {
# drop manually added student
my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid,'',$context);
# re-enroll as auto student
if ($drop_reply !~ /^ok/) {
$$logmsg .= &mt('An error occurred during the attempt to convert [_1] from a manual type to an auto type student - [_2].',$uname,$drop_reply).$linefeed;
} else {
# re-enroll as auto student
my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc);
&prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
if ($$currlist{$uname}[$sec] ne $usec) {
my $showoldsec = $$currlist{$uname}[$sec];
if ($$currlist{$uname}[$sec] eq '') {
$showoldsec = &mt('none');
}
my $showsec = $usec;
if ($usec eq '') {
$showsec = &mt('none');
}
$switchresult .= &mt('Section for [_1] switched from [_2] to [_3].',$uname,$showoldsec,$showsec).$linefeed;
if ($context eq 'automated') {
$$logmsg .= &mt('Section switch for [_1] from [_2] to [_3].',$uname,$showoldsec,$usec).$linefeed;
}
$switchcount ++;
}
&execute_add($context,'switchtype',$uname,$dom,$auth,
$authparam,$first,$middle,$last,$gene,
$pid,$usec,$end,$start,$emailenc,
$credits,$instsec,$cid,\$addresult,\$enrollcount,
$linefeed,$logmsg);
$added = 1;
}
}
# Check for section changes
if ($$currlist{$uname}[$sec] eq $stuinfo[ $place{groupID} ]) {
# Check for access date changes for students with access starting in the future.
if ( (grep/^$uname$/,@futurestudents) && ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
my $datechange = &datechange_check($$currlist{$uname}[$cstart],$$currlist{$uname}[$cend],$startdate,$enddate);
if ($datechange) {
my $modify_access_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid,'',$context,$credits,$instsec);
$access = &showaccess($enddate,$startdate);
if ($modify_access_result =~ /^ok/) {
$$logmsg .= &mt('Change in access dates for [_1].',$uname).$access.$linefeed;
$added = 1;
} else {
$$logmsg .= &mt('Error when attempting to change start and/or end access dates for [_1] in section: [_2] -error [_3].',$uname,$stuinfo[$place{groupID}],$modify_access_result).$linefeed;
}
}
}
} else {
if ( ($$currlist{$uname}[$type] eq "auto") && ($adds == 1) ) {
# Delete from roles.db for current section
my $expiretime = time;
my $uurl='/'.$cid;
$uurl=~s/\_/\//g;
if ($$currlist{$uname}[$sec]) {
$uurl.='/'.$$currlist{$uname}[$sec];
}
my $expire_role_result = &Apache::lonnet::assignrole($dom,$uname,$uurl,'st',$expiretime,'','','',$context);
if ($expire_role_result eq 'ok') {
my $modify_section_result;
if (grep/^$uname$/,@activestudents) {
$modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$$currlist{$uname}[$cend],$$currlist{$uname}[$cstart],'auto','',$cid,'',$context,$credits,$instsec);
} else {
$modify_section_result = &Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid,'',$context,$credits,$instsec);
$access = &showaccess($enddate,$startdate);
}
if ($modify_section_result =~ /^ok/) {
$switchresult .= &mt('Section for [_1] switched from old section: [_2] to new section: [_3].',$uname,$$currlist{$uname}[$sec],$stuinfo[ $place{groupID} ]).$access.$linefeed;
$added = 1;
if ($context eq 'automated') {
$$logmsg .= &mt('Section switch for [_1] from [_2] to [_3].',$uname,$$currlist{$uname}[$sec],$stuinfo[ $place{groupID} ]).$linefeed;
}
$switchcount ++;
} else {
$$logmsg .= &mt("Error when attempting section change for [_1], from old section: '[_2]' to new section: '[_3]' -error: [_4]",$uname,$$currlist{$uname}[$sec],$stuinfo[ $place{groupID} ],$modify_section_result).$linefeed;
}
} else {
$$logmsg .= &mt("Error when attempting to expire role for [_1] in old section: '[_2]' -error: '[_3]'.",$uname,$$currlist{$uname}[$sec],$expire_role_result).$linefeed;
}
}
}
# Check for credits changes
if (($showcredits) &&
($$currlist{$uname}[$credidx] ne $credits) && (!$added)) {
my $modify_credits_result =
&Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid,'',$context,$credits,$instsec);
if ($modify_credits_result =~ /^ok/) {
if ($credits ne '') {
$$logmsg .= &mt('Credits change for [_1] from [_2] to [_3].',$uname,$$currlist{$uname}[$credidx],$credits).$linefeed;
} else {
$$logmsg .= &mt('Credits change for [_1] from [_2] to course default [_3].',$uname,$$currlist{$uname}[$credidx],$defaultcredits).$linefeed;
}
} else {
$$logmsg .= &mt('Error when attempting to change credits for [_1] in section: [_2] -error [_3].',$uname,$stuinfo[$place{groupID}],$modify_credits_result).$linefeed;
}
}
# Check for institutional section change
if (($$currlist{$uname}[$instidx] ne $instsec) && (!$added) && ($$currlist{$uname}[$type] eq "auto")) {
my $modify_instsec_result =
&Apache::lonnet::modify_student_enrollment($dom,$uname,undef,undef,undef,undef,undef,$stuinfo[ $place{groupID} ],$enddate,$startdate,'auto','',$cid,'',$context,$credits,$instsec);
if ($modify_instsec_result =~ /^ok/) {
$$logmsg .= &mt('Institutional section change for [_1] from [_2] to [_3].',$uname,$$currlist{$uname}[$instidx],$instsec).$linefeed;
} else {
$$logmsg .= &mt('Error when attempting to change institutional section for [_1] in section: [_2] -error [_3].',$uname,$stuinfo[$place{groupID}],$modify_instsec_result).$linefeed;
}
}
} else {
# Check for changed usernames by checking studentIDs
if ( ($stuinfo[ $place{studentID} ] ne '') && (grep/^$stuinfo[ $place{studentID} ]$/,@LCids) ) {
foreach my $match ( @{ $unameFromLCid{ $stuinfo[ $place{studentID} ] } } ) {
$$logmsg .= &mt('A possible change in username has been detected for a student enrolled in this course.').' '.&mt('The existing LON-CAPA classlist contains user: [_1] and student/employee ID: [_2].',$match,$stuinfo[ $place{studentID} ]);
if (grep/^$match$/,@okusers) {
$$logmsg .= &mt('The username [_1] remains in the institutional classlist, but the same student/employee ID is used for new user: [_2] now found in the institutional classlist.',$match,$uname).' '.&mt('You may need to contact your Domain Coordinator to determine how to resolve this issue and whether to move student data files for user: [_1] to [_2].',$match,$uname).' ';
} else {
unless ($drops == 1) {
$$logmsg .= &mt('This username - [_1] - has been dropped from the institutional classlist, but the student/employee ID of this user is also used by [_2] who now appears in the institutional classlist.',$match,$uname).' '.&mt('You may need to contact your Domain Coordinator to request a move of the student data files for user: [_1] to [_2].',$match,$uname).' ';
}
}
$$logmsg .= &mt('Because of this student/employee ID conflict, the new username - [_1] - has not been added to the LON-CAPA classlist',$uname).$linefeed;
}
} elsif ($adds == 1) {
my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc,$credithours);
&prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
# Check for existing account in this LON-CAPA domain for this username
next if (($end) && ($end < $now));
my $uhome=&Apache::lonnet::homeserver($uname,$dom);
if ($uhome eq 'no_host') { # User does not exist
my $args = {'auth' => $auth,
'authparam' => $authparam,
'emailenc' => $emailenc,
'udom' => $dom,
'uname' => $uname,
'pid' => $pid,
'first' => $first,
'middle' => $middle,
'last' => $last,
'gene' => $gene,
'usec' => $usec,
'end' => $end,
'start' => $start,
'emailaddr' => $emailaddr,
'cid' => $cid,
'crs' => $crs,
'cdom' => $dom,
'context' => $context,
'linefeed' => $linefeed,
'inststatus' => $inststatus,
'instsec' => $instsec,
'role' => 'st',
};
if ($credits) {
$args->{'credits'} = $credits;
}
my $outcome = &create_newuser($args,$logmsg,$newusermsg,\$enrollcount,\$addresult,\%longroles,\%courseinfo,$context);
} else {
&execute_add($context,'newstudent',$uname,$dom,$auth,
$authparam,$first,$middle,$last,$gene,$pid,
$usec,$end,$start,$emailenc,$credits,$instsec,
$cid,\$addresult,\$enrollcount,$linefeed,
$logmsg);
}
if ($courseinfo{'showphoto'}) {
my ($result,$resulttype) =
&Apache::lonnet::auto_checkphotos($uname,$dom,$pid);
if ($resulttype) {
push(@{$$phototypes{$resulttype}},$uname);
}
}
}
}
}
}
if ($courseinfo{'showphoto'}) {
if (keys(%{$phototypes})>0) {
my %lt = &photo_response_types();
foreach my $type (sort(keys(%{$phototypes}))) {
my $numphoto = @{$$phototypes{$type}};
if ($numphoto > 0) {
if ($context eq 'updatenow') {
$photoresult .= '<br /><b>'.
&mt('For [_1] students, photos ',$numphoto).
$lt{$type}.'</b><ul><li>';
} else {
$photoresult .= "\n".&mt("For [quant,_1,student], photos ",$numphoto).
$lt{$type}."\n";
}
foreach my $user (@{$$phototypes{$type}}) {
$photoresult .= $user.$linefeed;
}
if ($context eq 'updatenow') {
$photoresult = substr($photoresult,0,
rindex($photoresult,"<li>"));
$photoresult .= '</ul><br />';
} else {
$photoresult .= "\n";
}
}
}
}
}
# Do drops
if ( ($drops == 1) && (@reg_students > 0) ) {
my %delaydrops;
foreach my $uname (@localstudents) {
if ($$currlist{$uname}[$type] eq "auto") {
my @saved = ();
if (!grep/^$uname$/,@reg_students) {
# Check for changed usernames by checking studentIDs
if (grep/^$$currlist{$uname}[ $stuid ]$/,@allINids) {
foreach my $match (@{$unameFromINid{$$currlist{$uname}[ $stuid ]}} ) {
$$logmsg .= &mt('A possible change in username has been detected for a student enrolled in this course.').' '.&mt('The existing LON-CAPA classlist contains user: [_1] and student/employee ID: [_2].',$uname,$$currlist{$uname}[ $stuid ]).' '.&mt('This username has been dropped from the institutional classlist, but the same student/employee ID is used for user: [_1] who still appears in the institutional classlist.',$match).' '.&mt('You may need to move the student data files for user: [_1] to [_2]',$uname,$match).' '.&mt('Because of this, user [_1] has not been dropped from the course.',$uname).$linefeed;
push @saved,$uname;
}
} elsif (@saved == 0) {
# Check enrollment count for institutional section of student to be dropped
if ($$currlist{$uname}[$instidx]) {
if (exists($classcount{$$currlist{$uname}[$instidx]})) {
if ($failsafe eq 'any') {
if ($autofailsafe) {
push(@{$delaydrops{$$currlist{$uname}[$instidx]}},$uname);
next;
}
} else {
unless ($failsafe eq 'off') {
if ($classcount{$$currlist{$uname}[$instidx]} == 0) {
if ($autofailsafe) {
push(@{$delaydrops{$$currlist{$uname}[$instidx]}},$uname);
next;
}
}
}
}
}
}
my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid,'',$context);
if ($drop_reply !~ /^ok/) {
$$logmsg .= &mt('An error occurred during the attempt to expire the [_1] from the old section [_2] - [_3].',$uname,$$currlist{$uname}[$sec],$drop_reply).$linefeed;
} else {
$dropcount ++;
my %userenv = &Apache::lonnet::get('environment',['firstname','lastname','id'],$dom,$uname);
$dropresult .= $userenv{'firstname'}." ".$userenv{'lastname'}." (".$userenv{'id'}.") - ".$uname.' '.&mt("dropped from section: '[_1]'.",$$currlist{$uname}[$sec]).$linefeed;
if ($context eq 'automated') {
$$logmsg .= &mt('User [_1] student role expired from course.',$uname).$linefeed;
}
}
}
}
}
}
if (scalar(keys(%delaydrops)) > 0) {
foreach my $class (keys(%delaydrops)) {
if (ref($delaydrops{$class}) eq 'ARRAY') {
if ($autofailsafe < scalar(@{$delaydrops{$class}})) {
$$logmsg .= &mt('The following students were not expired from the old section [_1] because the enrollment count retrieved for that institutional section was zero, and the number of students with roles to expire exceeded the failsafe threshold of [_2]:',$class,$autofailsafe);
if ($context eq "updatenow") {
$$logmsg .= '<br />'.join('<br />',@{$delaydrops{$class}}).$linefeed;
} elsif ($context eq "automated") {
$$logmsg .= $linefeed.join($linefeed,@{$delaydrops{$class}}).$linefeed;
}
} else {
foreach my $uname (@{$delaydrops{$class}}) {
my $drop_reply = &Apache::lonnet::modifystudent($dom,$uname,'','','',undef,undef,undef,undef,$$currlist{$uname}[$sec],time,undef,undef,undef,undef,'auto','',$cid,'',$context);
if ($drop_reply !~ /^ok/) {
$$logmsg .= &mt('An error occurred during the attempt to expire the [_1] from the old section [_2] - [_3].',$uname,$$currlist{$uname}[$sec],$drop_reply).$linefeed;
} else {
$dropcount ++;
my %userenv = &Apache::lonnet::get('environment',['firstname','lastname','id'],$dom,$uname);
$dropresult .= $userenv{'firstname'}." ".$userenv{'lastname'}." (".$userenv{'id'}.") - ".$uname.' '.&mt("dropped from section: '[_1]'.",$$currlist{$uname}[$sec]).$linefeed;
if ($context eq 'automated') {
$$logmsg .= &mt('User [_1] student role expired from course.',$uname).$linefeed;
}
}
}
}
}
}
}
}
# Terminated explictly allowed access to student creation/modification
# and group membership changes
if ($context eq 'automated') {
delete($env{'allowed.cst'});
delete($env{'allowed.mdg'});
}
if ($enrollcount > 0) {
if ($context eq "updatenow") {
$addresult = substr($addresult,0,rindex($addresult,"<li>"));
$addresult = &mt("The following [quant,_1,student was,students were] added to this LON-CAPA course:",$enrollcount).'<br/><ul><li>'.$addresult.'</ul><br/><br/>';
} else {
$addresult = &mt("The following [quant,_1,student was,students were] added to this LON-CAPA course:",$enrollcount)."\n\n".$addresult."\n\n";
}
}
if ($dropcount > 0) {
if ($context eq "updatenow") {
$dropresult = substr($dropresult,0,rindex($dropresult,"<li>"));
$dropresult = &mt("The following [quant,_1,student was,students were] expired from this LON-CAPA course:",$dropcount).'<br/><ul><li>'.$dropresult.'</ul><br/><br/>';
} else {
$dropresult = &mt("The following [quant,_1,student was,students were] expired from this LON-CAPA course:",$dropcount)."\n\n".$dropresult."\n\n";
}
}
if ($switchcount > 0) {
if ($context eq "updatenow") {
$switchresult = substr($switchresult,0,rindex($switchresult,"<li>"));
$switchresult = &mt("The following [quant,_1,student] switched sections in this LON-CAPA course:",$switchcount).'<br/><ul><li>'.$switchresult.'</ul><br/><br/>';
} else {
$switchresult = &mt("The following [quant,_1,student] switched sections in this LON-CAPA course:",$switchcount)."\n\n".$switchresult."\n\n";
}
}
if ( ($adds) && ($enrollcount == 0) ) {
$addresult = &mt('There were no new students to add to the course.');
if ($context eq "updatenow") {
$addresult .="<br/><br/>";
} else {
$addresult .="\n";
}
}
if ( ($drops) && ($dropcount == 0) ) {
$dropresult = &mt('There were no students with roles to expire because all active students previously added to the course from institutional classlist(s) are still officially registered.');
if ($context eq "updatenow") {
$dropresult .="<br/>";
} else {
$dropresult .="\n";
}
}
my $changecount = $enrollcount + $dropcount + $switchcount;
return ($changecount,$addresult.$photoresult.$dropresult.$switchresult);
}
sub create_newuser {
my ($args,$logmsg,$newusermsg,$enrollcount,$addresult,$longroles,
$courseinfo,$called_context) = @_;
my $auth = $args->{'auth'};
my $authparam = $args->{'authparam'};
my $emailenc = $args->{'emailenc'};
my $udom = $args->{'udom'};
my $uname = $args->{'uname'};
my $pid = $args->{'pid'};
my $first = $args->{'first'};
my $middle = $args->{'middle'};
my $last = $args->{'last'} ;
my $gene = $args->{'gene'};
my $usec = $args->{'usec'};
my $end = $args->{'end'};
my $start = $args->{'start'};
my $emailaddr = $args->{'emailaddr'};
my $cid = $args->{'cid'};
my $crs = $args->{'crs'};
my $cdom = $args->{'cdom'};
my $context = $args->{'context'};
my $linefeed = $args->{'linefeed'};
my $role = $args->{'role'};
my $inststatus = $args->{'inststatus'};
my $credits = $args->{'credits'};
my $instsec = $args->{'instsec'};
my $create_passwd = 0;
my $authchk = '';
my $outcome;
unless ($authparam eq '') { $authchk = 'ok'; };
# If no account exists and passwords should be generated
if ($auth eq "internal") {
if ($authparam eq '') {
$authparam = &create_password($udom);
if ($authparam eq '') {
$authchk = '';
} else {
$create_passwd = 1;
$authchk = 'ok';
}
}
} elsif ($auth eq "localauth") {
($authparam,$create_passwd,$authchk) = &Apache::lonnet::auto_create_password($crs,$cdom,$authparam,$udom);
} elsif ($auth =~ m/^krb/) {
if ($authparam eq '') {
$$logmsg .= &mt('No Kerberos domain was provided for the new user - [_1], so the new user was not enrolled in the course',$uname).$linefeed;
$authchk = 'invalid';
}
} else {
$authchk = 'invalid';
$$logmsg .= &mt('An invalid authentication type was provided for the new user - [_1], so the user was not enrolled in the course.',$uname).$linefeed;
}
if ($authchk eq 'ok') {
# Now create user.
my $type = 'auto';
my $userurl = '/'.$cdom.'/'.$crs;
if ($usec ne '') {
$userurl .= '/'.$usec;
}
if ($context eq 'createowner' || $context eq 'createcourse') {
my $result = &Apache::lonnet::modifyuser($udom,$uname,$pid,$auth,$authparam,$first,$middle,$last,$gene,'1',undef,$emailaddr);
if ($result eq 'ok' && $context eq 'createcourse') {
$outcome = &Apache::loncommon::commit_standardrole($udom,$uname,$userurl,$role,$start,$end,$cdom,$crs,$usec,$called_context);
unless ($outcome =~ /^Error:/) {
$outcome = 'ok';
}
} else {
$outcome = $result;
}
} else {
$outcome=&Apache::lonnet::modifystudent($udom,$uname,$pid,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,'',undef,$emailaddr,'auto','',$cid,'',$called_context,$inststatus,$credits,$instsec);
}
if ($outcome eq 'ok') {
my $access = &showaccess($end,$start);
my $showsec = $usec;
if ($usec eq '') {
$showsec = &mt('none');
}
$$addresult .= "$first $last ($pid) - $uname ".&mt("enrolled in section: '[_1]'.",$showsec).$access.$linefeed;
unless ($context eq 'createowner' || $context eq 'createcourse') {
$$enrollcount ++;
}
if ($called_context eq 'automated') {
$$logmsg .= &mt('New [_1] user [_2] added successfully.',$udom,$uname);
}
unless ($emailenc eq '' || $context eq 'createowner' || $context eq 'createcourse') {
my %emailHash;
$emailHash{'critnotification'} = $emailenc;
$emailHash{'notification'} = $emailenc;
$emailHash{'permanentemail'} = $emailenc;
my $putresult = &Apache::lonnet::put('environment',\%emailHash,$udom,$uname);
}
if ($create_passwd) {
# Send e-mail with initial password to new user at $emailaddr.
# If e-mail address is invalid, send password via message to courseowner i
# (if automated call) or to user if roster update.
if ($emailaddr eq '') {
$$newusermsg .= &mt(' username: [_1], password: [_2]',$uname,$authparam).$linefeed."\n";
} else {
my $subject = &mt('New LON-CAPA account');
my $body;
my $portalurl = 'http://'.$ENV{'SERVER_NAME'};
my $protocol = 'http';
my $lonhost=&Apache::lonnet::domain($udom,'primary');
if ($lonhost ne '') {
my $ip = &Apache::lonnet::get_host_ip($lonhost);
if ($Apache::lonnet::protocol{$lonhost} eq 'https') {
$protocol = 'https';
}
if ($ip ne '') {
$portalurl = $protocol.'://'.$ip
}
}
if ($context eq 'createowner') {
$body = &mt('A user account has been created for you while creating your new course in the LON-CAPA course management and online homework system.')."\n\n".&mt('You should log-in to the system using the following credentials:')."\n".&mt('username: ').$uname."\n".&mt('password: ').$authparam."\n\n".&mt('The URL you should use to access the LON-CAPA system at your institution is: ').$portalurl."\n\n";
} elsif ($context eq 'createcourse') {
$body = &mt('You have been assigned the role of [_1] in a new course: [_2] - [_3] in the LON-CAPA course management and online homework system.',$$longroles{$role},$$courseinfo{'description'},$$courseinfo{'inst_code'}).' '.&mt('As you did not have an existing user account in the system, one has been created for you.')."\n\n".&mt("You should log-in to the system using the following credentials:\nusername: [_1]\npassword: [_2]",$uname,$authparam)."\n\n".&mt('The URL you should use to access the LON-CAPA system at your institution is: ').$portalurl."\n\n";
} else {
my $access_start = 'immediately';
if ($start > 0) {
$access_start = localtime($start)
}
$body =
&mt('You have been enrolled in the LON-CAPA system at your institution, because you are a registered student in a class which is using the LON-CAPA course management and online homework system.')."\n\n"
.&mt("You should log-in to the system using the following credentials:\nusername: [_1]\npassword: [_2]",$uname,$authparam)."\n\n"
.&mt('The URL you should use to access the LON-CAPA system at your institution is: ').$portalurl."\n\n"
.&mt('When you log-in you will be able to access the LON-CAPA course for [_1] - [_2] starting [_3].',$$courseinfo{'description'},$$courseinfo{'inst_code'},$access_start)."\n";
}
&Apache::lonmsg::sendemail($emailaddr,$subject,$body);
}
if ($called_context eq 'automated') {
$$logmsg .= &mt(' Initial password - sent to ').$emailaddr.$linefeed;
}
} else {
if ($called_context eq 'automated') {
$$logmsg .= $linefeed;
}
}
} else {
$$logmsg .= &mt('An error occurred adding new user [_1] - [_2].',$uname,$outcome).$linefeed;
}
} else {
$$logmsg .= &mt('An error occurred adding the new user [_1] because the authcheck failed for authtype [_2] and parameter [_3].',$uname,$auth,$authparam).' '.&mt('The authcheck response was [_1].',$authchk).$linefeed;
}
return $outcome;
}
sub prepare_add {
my ($authtype,$autharg,$enddate,$startdate,$stuinfo,$place,$dom,$uname,$auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc) = @_;
$$auth = $$stuinfo[ $$place{'authtype'} ];
$$authparam = $$stuinfo[ $$place{'autharg'} ];
$$first = $$stuinfo[ $$place{'firstname'} ];
$$middle = $$stuinfo[ $$place{'middlename'} ];
$$last = $$stuinfo[ $$place{'lastname'} ];
$$gene = $$stuinfo[ $$place{'generation'} ];
$$usec = $$stuinfo[ $$place{'groupID'} ];
$$end = $$stuinfo[ $$place{'enddate'} ];
$$start = $$stuinfo[ $$place{'startdate'} ];
$$emailaddr = $$stuinfo[ $$place{'email'} ];
$$pid = $$stuinfo[ $$place{'studentID'} ];
# remove non alphanumeric values from section
$$usec =~ s/\W//g;
unless ($$emailaddr =~/^[^\@]+\@[^\@]+$/) { $$emailaddr =''; }
$$emailenc = &HTML::Entities::encode($$emailaddr,'<>&"');
# Use course defaults where entry is absent
if ( ($$auth eq '') || (!defined($$auth)) ) {
$$auth = $authtype;
}
if ( ($$authparam eq '') || (!defined($$authparam)) ) {
$$authparam = $autharg;
}
if ( ($$end eq '') || (!defined($$end)) ) {
$$end = $enddate;
}
if ( ($$start eq '') || (!defined($$start)) ) {
$$start = $startdate;
}
# Clean up whitespace
foreach ($dom,$uname,$pid,$first,$middle,$last,$gene,$usec) {
$$_ =~ s/(\s+$|^\s+)//g;
}
return;
}
sub execute_add {
my ($context,$caller,$uname,$dom,$auth,$authparam,$first,$middle,$last,
$gene,$pid,$usec,$end,$start,$emailenc,$credits,$instsec,$cid,$addresult,
$enrollcount,$linefeed,$logmsg) = @_;
# Get the user's information and authentication
my %userenv = &Apache::lonnet::get('environment',['firstname','middlename','lastname','generation','id','critnotification','notification','permanentemail','inststatus'],$dom,$uname);
my ($tmp) = keys(%userenv);
if ($tmp =~ /^(con_lost|error)/i) {
%userenv = ();
}
# Get the user's e-mail address
if ($userenv{critnotification} =~ m/%40/) {
unless ($emailenc eq $userenv{critnotification}) {
$$logmsg .= &mt('Current critical notification e-mail - [_1] for [_2] is different to e-mail address in institutional classlist - [_3].',
$userenv{critnotification},$uname,$emailenc).
$linefeed;
}
}
if ($userenv{notification} =~ m/%40/) {
unless ($emailenc eq $userenv{notification}) {
$$logmsg .= &mt('Current standard notification e-mail - [_1] for [_2] is different to e-mail address in institutional classlist - [_3].',
$userenv{notification},$uname,$emailenc).
$linefeed;
}
}
if ($userenv{permanentemail} =~ m/%40/) {
unless ($emailenc eq $userenv{permanentemail}) {
$$logmsg .= &mt('Current permanent e-mail
- [_1] for [_2] is different to e-mail address in institutional classlist - [_3]',$userenv{permanentemail},$uname,$emailenc).$linefeed;
}
}
my $krbdefdom = '';
my $currentauth=&Apache::lonnet::queryauthenticate($uname,$dom);
if ($currentauth=~/^(krb[45]):(.*)/) {
$currentauth = $1;
$krbdefdom = $2;
} elsif ($currentauth=~ /^(unix|internal|localauth):/) {
$currentauth = $1;
} else {
$$logmsg .= &mt('Invalid authentication method [_1] for [_2].',$currentauth,$uname).$linefeed;
}
# Report if authentication methods are different.
if ($currentauth ne $auth) {
$$logmsg .= &mt("Authentication type mismatch for [_1] - '[_2]' in system, '[_3]' based on information in classlist or default for this course.",$uname,$currentauth,$auth).$linefeed;
} elsif ($auth =~ m/^krb/) {
if ($krbdefdom ne $authparam) {
$$logmsg .= &mt("Kerberos domain mismatch for [_1] - '[_2]' in system, '[_3]' based on information in classlist or default for this course.",$uname,$krbdefdom,$authparam).$linefeed;
}
}
# Check user data
if ($first ne $userenv{'firstname'} ||
$middle ne $userenv{'middlename'} ||
$last ne $userenv{'lastname'} ||
$gene ne $userenv{'generation'} ||
$pid ne $userenv{'id'} ||
$emailenc ne $userenv{'permanentemail'} ) {
# Make the change(s)
my %changeHash;
$changeHash{'firstname'} = $first;
$changeHash{'middlename'} = $middle;
$changeHash{'lastname'} = $last;
$changeHash{'generation'} = $gene;
$changeHash{'id'} = $pid;
$changeHash{'permanentemail'} = $emailenc;
my $putresult = &Apache::lonnet::put('environment',\%changeHash,$dom,$uname);
if ($putresult eq 'ok') {
$$logmsg .= &mt('User information updated for user: [_1] prior to enrollment.',$uname).$linefeed;
} else {
$$logmsg .= &mt('There was a problem modifying user data for existing user - [_1] -error: [_2], enrollment will still be attempted.',$uname,$putresult).$linefeed;
}
}
# Assign the role of student in the course.
my $classlist_reply =
&Apache::lonnet::modify_student_enrollment($dom,$uname,$pid,$first,$middle,
$last,$gene,$usec,$end,$start,
'auto','',$cid,'',$context,
$credits,$instsec);
if ($classlist_reply eq 'ok') {
my $access = &showaccess($end,$start);
my $showsec = $usec;
if ($usec eq '') {
$showsec = &mt('none');
}
if ($caller eq 'switchtype') {
$$logmsg .= &mt("Existing user [_1] detected in institutional classlist - switched from 'manual' to 'auto' enrollment in section [_2].",$uname,$showsec).$access.$linefeed;
} elsif ($caller eq 'newstudent') {
$$enrollcount ++;
$$addresult .= "$first $last ($pid) - $uname ".&mt("enrolled in section '[_1]'.",$showsec).$access.$linefeed;
}
if ($context eq 'automated') {
$$logmsg .= &mt('Existing [_1] user [_2] enrolled successfully.',$dom,$uname).$linefeed;
}
} else {
$$logmsg .= &mt('There was a problem updating the classlist db file for user [_1] to show the new enrollment -error: [_2], so no enrollment occurred for this user.',$uname,$classlist_reply).$linefeed;
}
return;
}
sub datechange_check {
my ($oldstart,$oldend,$startdate,$enddate) = @_;
my $datechange = 0;
unless ($oldstart eq $startdate) {
$datechange = 1;
}
if (!$datechange) {
if (!$oldend) {
if ($enddate) {
$datechange = 1;
}
} elsif ($oldend ne $enddate) {
$datechange = 1;
}
}
return $datechange;
}
sub showaccess {
my ($end,$start) = @_;
my $showstart;
my $showend;
if ( (!$start) || ($start <= time) ) {
$showstart = 'immediately';
} else {
$showstart = &Apache::lonlocal::locallocaltime($start);
}
if (!$end) {
$showend = 'no end date';
} else {
$showend = &Apache::lonlocal::locallocaltime($end);
}
my $access_msg = ' '.&mt('Access starts: [_1], ends: [_2].',$showstart,$showend);
return $access_msg;
}
sub parse_classlist {
my ($tmpdir,$dom,$crs,$class,$placeref,$groupID,$studentsref) = @_;
my $xmlfile = $tmpdir."/tmp/".$dom."_".$crs."_".$class."_classlist.xml";
my $uname = '';
my @state;
my @items = ('autharg','authtype','email','firstname','generation','lastname','middlename','studentID','credits','inststatus');
my $p = HTML::Parser->new
(
xml_mode => 1,
start_h =>
[sub {
my ($tagname, $attr) = @_;
push @state, $tagname;
if ("@state" eq "students student") {
$uname = $attr->{username};
$$studentsref{$uname}[ $$placeref{'groupID'} ] = $groupID;
$$studentsref{$uname}[ $$placeref{'instsec'} ] = $class;
}
}, "tagname, attr"],
text_h =>
[sub {
my ($text) = @_;
if ("@state" eq "students student startdate") {
my $start = $text;
unless ($text eq '') {
$start = &process_date($text);
}
$$studentsref{$uname}[ $$placeref{'startdate'} ] = $start;
} elsif ("@state" eq "students student enddate") {
my $end = $text;
unless ($text eq '') {
$end = &process_date($text);
}
$$studentsref{$uname}[ $$placeref{'enddate'} ] = $end;
} else {
foreach my $item (@items) {
if ("@state" eq "students student $item") {
$$studentsref{$uname}[ $$placeref{$item} ] = $text;
}
}
}
}, "dtext"],
end_h =>
[sub {
my ($tagname) = @_;
pop @state;
}, "tagname"],
);
$p->parse_file($xmlfile);
$p->eof;
if (-e "$xmlfile") {
unlink $xmlfile;
}
return;
}
sub process_date {
my $timestr = shift;
my $timestamp = '';
if ($timestr =~ m/^\d{4}:\d{2}:\d{2}/) {
my @entries = split/:/,$timestr;
for (my $j=0; $j<@entries; $j++) {
if ( length($entries[$j]) > 1 ) {
$entries[$j] =~ s/^0//;
}
}
$entries[1] = $entries[1] - 1;
$timestamp = timelocal($entries[5],$entries[4],$entries[3],$entries[2],$entries[1],$entries[0]);
}
return $timestamp;
}
sub create_password {
my ($udom) = @_;
my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
my ($min,$max,@chars);
$min = $Apache::lonnet::passwdmin;
if (ref($passwdconf{'chars'}) eq 'ARRAY') {
if ($passwdconf{'min'} =~ /^\d+$/) {
if ($passwdconf{'min'} > $min) {
$min = $passwdconf{'min'};
}
}
if ($passwdconf{'max'} =~ /^\d+$/) {
$max = $passwdconf{'max'};
}
@chars = @{$passwdconf{'chars'}};
}
my @letts = qw(b c d f g h j k l m n p q r s t v w x y z);
my (@included,%reqd);
if (@chars) {
map { $reqd{$_} = 1; } @chars;
}
if ($reqd{'uc'}) {
my $letter = $letts[int( rand(21) )];
$letter =~ tr/a-z/A-Z/;
if ($letter ne '') {
push(@included,$letter);
}
}
if ($reqd{'lc'}) {
my $letter = $letts[int( rand(21) )];
if ($letter ne '') {
push(@included,$letter);
}
}
if ($reqd{'num'}) {
my $number = int( rand(10) );
if ($number ne '') {
push(@included,$number);
}
}
if ($reqd{'spec'}) {
my @specs = qw(! # * & _ - + $);
my $special = $specs[int( rand(8) )];
if ($special ne '') {
push(@included,$special);
}
}
my $start = 0;
if (scalar(@included) > 0) {
$start = scalar(@included);
}
my $end = 8;
if ($min =~ /^\d+$/) {
if ($min > $end) {
$end = $min;
}
}
for (my $i=$start; $i<$end; $i++) {
my $lettnum = int (rand 2);
my $item = '';
if ($lettnum) {
$item = $letts[int( rand(21) )];
my $uppercase = int(rand 2);
if ($uppercase) {
$item =~ tr/a-z/A-Z/;
}
} else {
$item = int( rand(10) );
}
if ($item ne '') {
push(@included,$item);
}
}
my $passwd = join('',&Math::Random::random_permutation(@included));
return $passwd;
}
sub get_courseinfo {
my ($dom,$crs,$courseinfo) = @_;
my $owner;
if (defined($dom) && defined($crs)) {
my %settings = &Apache::lonnet::get('environment',['internal.coursecode','internal.showphoto','description','internal.defaultcredits'],$dom,$crs);
if ( defined($settings{'internal.coursecode'}) ) {
$$courseinfo{'inst_code'} = $settings{'internal.coursecode'};
}
if ( defined($settings{'description'}) ) {
$$courseinfo{'description'} = $settings{'description'};
}
if ( defined($settings{'internal.showphoto'}) ) {
$$courseinfo{'showphoto'} = $settings{'internal.showphoto'};
}
if ( defined($settings{'internal.credithours'}) ) {
$$courseinfo{'defaultcredits'} = $settings{'internal.defaultcredits'};
}
}
return;
}
sub place_hash {
my %place = (
autharg => 0,
authtype => 1,
email => 2,
enddate => 3,
firstname => 4,
generation => 5,
groupID => 6,
lastname => 7,
middlename => 8,
startdate => 9,
studentID => 10,
credits => 11,
inststatus => 12,
instsec => 13,
);
return %place;
}
sub photo_response_types {
my %lt = &Apache::lonlocal::texthash(
'same' => 'remained unchanged',
'update' => 'were updated',
'new' => 'were added',
'missing' => 'were missing',
'error' => 'were not imported because an error occurred',
'nouser' => 'were for users without accounts',
'noid' => 'were for users without student/employee IDs',
);
return %lt;
}
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