# The LearningOnline Network with CAPA
# The LON-CAPA Homework handler
#
# $Id: lonhomework.pm,v 1.391 2024/12/20 00:24:39 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 Apache::lonhomework;
use strict;
use Apache::style();
use Apache::lonxml();
use Apache::lonnet;
use Apache::lonplot();
use Apache::inputtags();
use Apache::structuretags();
use Apache::randomlabel();
use Apache::response();
use Apache::hint();
use Apache::outputtags();
use Apache::caparesponse();
use Apache::radiobuttonresponse();
use Apache::optionresponse();
use Apache::imageresponse();
use Apache::essayresponse();
use Apache::externalresponse();
use Apache::rankresponse();
use Apache::matchresponse();
use Apache::chemresponse();
use Apache::functionplotresponse();
use Apache::drawimage();
use Apache::loncapamath();
use Apache::loncourseuser();
use Apache::grades();
use Apache::Constants qw(:common);
use Apache::loncommon();
use Apache::lonparmset();
use Apache::lonnavmaps();
use Apache::lonlocal;
use LONCAPA qw(:DEFAULT :match);
use LONCAPA::ltiutils();
use Time::HiRes qw( gettimeofday tv_interval );
use HTML::Entities();
use File::Copy();
# FIXME - improve commenting
my $registered_cleanup;
BEGIN {
&Apache::lonxml::register_insert();
}
=pod
=item set_bubble_lines()
Called at analysis time to set the bubble lines
hash for the problem.. This should be called in the
end_problemtype tag in analysis mode.
We fetch the hash of part id counters from lonxml
and push them into analyze:{part_id.bubble_lines}.
=cut
sub set_bubble_lines {
my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
foreach my $key (keys(%bubble_counters)) {
$Apache::lonhomework::analyze{"$key.bubble_lines"} =
$bubble_counters{"$key"};
}
}
#
# Decides what targets to render for.
# Implicit inputs:
# Various session environment variables:
# request.state - published - is a /res/ resource
# uploaded - is a /uploaded/ resource
# contruct - is a /priv/ resource
# form.grade_target - a form parameter requesting a specific target
sub get_target {
&Apache::lonxml::debug("request.state = $env{'request.state'}");
if( defined($env{'form.grade_target'})) {
&Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
} else {
&Apache::lonxml::debug("form.grade_target <undefined>");
}
if (($env{'request.state'} eq "published") ||
($env{'request.state'} eq "uploaded")) {
if ( defined($env{'form.grade_target'} )
&& ($env{'form.grade_target'} eq 'tex')) {
return ($env{'form.grade_target'});
} elsif ( defined($env{'form.grade_target'} )
&& ($Apache::lonhomework::viewgrades eq 'F' )) {
return ($env{'form.grade_target'});
} elsif ( $env{'form.grade_target'} eq 'webgrade'
&& ($Apache::lonhomework::queuegrade eq 'F' )) {
return ($env{'form.grade_target'});
} elsif ($env{'form.grade_target'} eq 'answer') {
if ($env{'form.answer_output_mode'} eq 'tex') {
return ($env{'form.grade_target'});
}
}
if ($env{'form.webgrade'} &&
($Apache::lonhomework::modifygrades eq 'F'
|| $Apache::lonhomework::queuegrade eq 'F' )) {
return ('grade','webgrade');
}
if ( defined($env{'form.submitted'}) &&
( !defined($env{'form.newrandomization'}))) {
return ('grade', 'web');
} else {
return ('web');
}
} elsif ($env{'request.state'} eq "construct") {
#
# We are in construction space, editing and testing problems
#
if ( defined($env{'form.grade_target'}) ) {
return ($env{'form.grade_target'});
}
if ( defined($env{'form.preview'})) {
if ( defined($env{'form.submitted'})) {
#
# We are doing a problem preview
#
return ('grade', 'web');
} else {
return ('web');
}
} else {
if ($env{'form.problemstate'} eq 'WEB_GRADE') {
return ('grade','webgrade','answer');
} elsif ($env{'form.problemmode'} eq 'view') {
return ('grade','web','answer');
} elsif ($env{'form.problemmode'} eq 'saveview') {
return ('modified','web','answer');
} elsif ($env{'form.problemmode'} eq 'discard') {
return ('web','answer');
} elsif (($env{'form.problemmode'} eq 'saveedit') ||
($env{'form.problemmode'} eq 'undo')) {
my %editors = &Apache::loncommon::permitted_editors();
if ($editors{'edit'}) {
return ('modified','no_output_web','edit');
} else {
return ('web');
}
} elsif ($env{'form.problemmode'} eq 'edit') {
my %editors = &Apache::loncommon::permitted_editors();
if ($editors{'edit'}) {
return ('no_output_web','edit');
} else {
return ('web');
}
} else {
return ('web');
}
}
#
# End of Authoring Space
#
}
#
# Huh? We are nowhere, so do nothing.
#
return ();
}
sub setup_vars {
my ($target) = @_;
return ';'
# return ';$external::target='.$target.';';
}
sub proctor_checked_in {
my ($slot_name,$slot,$type)=@_;
my @possible_proctors=split(",",$slot->{'proctor'});
return 1 if (!@possible_proctors);
my $key;
if ($type eq 'Task') {
my $version=$Apache::lonhomework::history{'resource.0.version'};
$key ="resource.$version.0.checkedin";
} elsif (($type eq 'problem') || ($type eq 'tool')) {
$key ='resource.0.checkedin';
}
# backward compatability, used to be username@domain,
# now is username:domain
my $who = $Apache::lonhomework::history{$key};
if ($who !~ /:/) {
$who =~ tr/@/:/;
}
foreach my $possible (@possible_proctors) {
if ($who eq $possible
&& $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
return 1;
}
}
return 0;
}
sub check_slot_access {
my ($id,$type,$symb,$partlist)=@_;
# does it pass normal muster
my ($status,$datemsg)=&check_access($id,$symb);
my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
if ($useslots ne 'resource' && $useslots ne 'map'
&& $useslots ne 'map_map') {
return ($status,$datemsg);
}
my $checkin = 'resource.0.checkedin';
my $version;
if ($type eq 'Task') {
$version=$Apache::lonhomework::history{'resource.version'};
$checkin = "resource.$version.0.checkedin";
}
my $checkedin = $Apache::lonhomework::history{$checkin};
my ($returned_slot,$slot_name,$checkinslot,$ipused,$blockip,$now,$ip,
$consumed_uniq);
$now = time;
$ip=$ENV{'REMOTE_ADDR'} || $env{'request.host'};
if ($checkedin) {
$checkinslot = $Apache::lonhomework::history{"$checkin.slot"};
my %slot=&Apache::lonnet::get_slot($checkinslot);
$consumed_uniq = $slot{'uniqueperiod'};
if ($slot{'iptied'}) {
$ipused = $Apache::lonhomework::history{"$checkin.ip"};
unless (($ip ne '') &&
(($ipused eq $ip) || ($ENV{'REMOTE_ADDR'} eq '127.0.0.1'))) {
$blockip = $slot{'iptied'};
$slot_name = $checkinslot;
$returned_slot = \%slot;
}
}
}
if ($status eq 'SHOW_ANSWER') {
if ($blockip eq 'answer') {
return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
} else {
return ($status,$datemsg);
}
}
if ($status eq 'CLOSED' ||
$status eq 'INVALID_ACCESS' ||
$status eq 'UNAVAILABLE') {
return ($status,$datemsg);
}
if ($env{'request.state'} eq "construct") {
return ($status,$datemsg);
}
if ($type eq 'Task') {
if ($checkedin &&
$Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
if ($blockip eq 'answer') {
return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
} else {
return ('SHOW_ANSWER');
}
}
} elsif (($type eq 'problem') &&
($Apache::lonhomework::browse eq 'F') &&
($ENV{'REMOTE_ADDR'} eq '127.0.0.1') &&
($env{'form.grade_courseid'} eq $env{'request.course.id'}) &&
(&Apache::lonnet::allowed('mgr',$env{'request.course.id'}))) {
return ($status,$datemsg);
}
my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb);
my $available = &Apache::lonnet::EXT("resource.0.available",$symb);
my @slots= (split(':',$availablestudent),split(':',$available));
# if (!@slots) {
# return ($status,$datemsg);
# }
undef($returned_slot);
undef($slot_name);
my $slotstatus='NOT_IN_A_SLOT';
my $num_usable_slots = 0;
if (!$symb) {
($symb) = &Apache::lonnet::whichuser();
}
foreach my $slot (@slots) {
$slot =~ s/(^\s*|\s*$)//g;
&Apache::lonxml::debug("getting $slot");
my %slot=&Apache::lonnet::get_slot($slot);
&Apache::lonhomework::showhash(%slot);
next if ($slot{'endtime'} < $now);
$num_usable_slots ++;
if ($slot{'starttime'} < $now &&
$slot{'endtime'} > $now &&
&Apache::loncommon::check_ip_acc($slot{'ip'})) {
if ($slot{'iptied'}) {
if ($env{'request.course.id'}) {
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
if ($slot eq $checkinslot) {
if ($ip eq $ipused) {
&Apache::lonxml::debug("$slot is good");
$slotstatus ='NEEDS_CHECKIN';
} else {
$slotstatus = 'NEED_DIFFERENT_IP';
$slot_name = $slot;
$returned_slot = \%slot;
last;
}
} elsif ($ip) {
my $uniqkey = "$slot\0$symb\0$ip";
my %used_ip = &Apache::lonnet::get('slot_uniqueips',[$uniqkey],$cdom,$cnum);
if ($used_ip{$uniqkey}) {
$slotstatus = 'NEED_DIFFERENT_IP';
} else {
&Apache::lonxml::debug("$slot is good");
$slotstatus ='NEEDS_CHECKIN';
}
}
}
} else {
&Apache::lonxml::debug("$slot is good");
$slotstatus='NEEDS_CHECKIN';
}
if ($slotstatus eq 'NEEDS_CHECKIN') {
$returned_slot=\%slot;
$slot_name=$slot;
last;
}
}
}
if ($slotstatus eq 'NEEDS_CHECKIN' &&
&proctor_checked_in($slot_name,$returned_slot,$type)) {
&Apache::lonxml::debug("proctor checked in");
$slotstatus=$status;
}
my ($is_correct,$got_grade);
if ($type eq 'Task') {
my $version=$Apache::lonhomework::history{'resource.0.version'};
$got_grade =
($Apache::lonhomework::history{"resource.$version.0.status"}
=~ /^(?:pass|fail)$/);
$is_correct =
($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
|| $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
} elsif (($type eq 'problem') || ($type eq 'tool')) {
if ((ref($partlist) eq 'ARRAY') && (@{$partlist} > 0)) {
my ($numcorrect,$numgraded) = (0,0);
foreach my $part (@{$partlist}) {
my $currtries = $Apache::lonhomework::history{"resource.$part.tries"};
my $maxtries = &Apache::lonnet::EXT("resource.$part.maxtries",$symb);
my $probstatus = &Apache::structuretags::get_problem_status($part);
my $earlyout;
unless (($probstatus eq 'no') ||
($probstatus eq 'no_feedback_ever')) {
if ($Apache::lonhomework::history{"resource.$part.solved"} =~/^correct_/) {
$numcorrect ++;
} else {
$earlyout = 1;
}
}
if ($currtries == $maxtries) {
$earlyout = 1;
} else {
$numgraded ++;
}
last if ($earlyout);
}
my $numparts = scalar(@{$partlist});
if ($numparts == $numcorrect) {
$is_correct = 1;
}
if ($numparts == $numgraded) {
$got_grade = 1;
}
} else {
my $currtries = $Apache::lonhomework::history{"resource.0.tries"};
my $maxtries = &Apache::lonnet::EXT("resource.0.maxtries",$symb);
my $probstatus = &Apache::structuretags::get_problem_status('0');
unless (($probstatus eq 'no') ||
($probstatus eq 'no_feedback_ever')) {
$is_correct =
($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
}
unless (($currtries == $maxtries) || ($is_correct)) {
$got_grade = 1;
}
}
}
&Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
# no slot is currently open, and has been checked in for this version
# but hasn't got a grade, therefore must be awaiting a grade
if (!defined($slot_name)
&& $checkedin
&& !$got_grade) {
return ('WAITING_FOR_GRADE');
}
# Previously used slot is no longer open, and has been checked in for this version.
# However, the problem is not closed, and potentially, another slot might be
# used to gain access to it to work on it, until the due date is reached, and the
# problem then becomes CLOSED. Therefore return the slotstatus -
# (which will be one of: NOT_IN_A_SLOT, RESERVABLE, RESERVABLE_LATER, or NOTRESERVABLE).
if (!defined($slot_name) && (($type eq 'problem') || ($type eq 'tool'))) {
if ($slotstatus eq 'NOT_IN_A_SLOT') {
if (!$num_usable_slots) {
($slotstatus,$datemsg) = &check_reservable_slot($slotstatus,$symb,$now,$checkedin,
$consumed_uniq);
}
}
return ($slotstatus,$datemsg);
}
if ($slotstatus eq 'NOT_IN_A_SLOT'
&& $checkedin ) {
if ($got_grade) {
if ($blockip eq 'answer') {
return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
} else {
return ('SHOW_ANSWER');
}
} else {
return ('WAITING_FOR_GRADE');
}
}
if (($is_correct) && ($blockip ne 'answer')) {
if (($type eq 'problem') || ($type eq 'tool')) {
return ($status);
}
return ('SHOW_ANSWER');
}
if ( $status eq 'CANNOT_ANSWER' &&
($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT' &&
$slotstatus ne 'NEED_DIFFERENT_IP') ) {
return ($status,$datemsg);
}
return ($slotstatus,$datemsg,$slot_name,$returned_slot,$ipused);
}
sub check_reservable_slot {
my ($slotstatus,$symb,$now,$checkedin,$consumed_uniq) = @_;
my $datemsg;
if ($slotstatus eq 'NOT_IN_A_SLOT') {
if ($env{'request.course.id'}) {
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
unless ($symb) {
($symb)=&Apache::lonnet::whichuser();
}
$slotstatus = 'NOTRESERVABLE';
my ($reservable_now_order,$reservable_now,$reservable_future_order,
$reservable_future) =
&Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
if (@{$reservable_now_order} > 0) {
if ((!$checkedin) || (ref($consumed_uniq) ne 'ARRAY')) {
$slotstatus = 'RESERVABLE';
$datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
} else {
my ($uniqstart,$uniqend,$useslot);
if (ref($consumed_uniq) eq 'ARRAY') {
($uniqstart,$uniqend)=@{$consumed_uniq};
}
foreach my $slot (reverse(@{$reservable_now_order})) {
if ($reservable_now->{$slot}{'uniqueperiod'} =~ /^(\d+)\,(\d+)$/) {
my ($new_uniq_start,$new_uniq_end) = ($1,$2);
next if (!
($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
}
$useslot = $slot;
last;
}
if ($useslot) {
$slotstatus = 'RESERVABLE';
$datemsg = $reservable_now->{$useslot}{'endreserve'};
}
}
}
}
unless ($slotstatus eq 'RESERVABLE') {
if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
if (@{$reservable_future_order} > 0) {
if ((!$checkedin) || (ref($consumed_uniq) ne 'ARRAY')) {
$slotstatus = 'RESERVABLE_LATER';
$datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
} else {
my ($uniqstart,$uniqend,$useslot);
if (ref($consumed_uniq) eq 'ARRAY') {
($uniqstart,$uniqend)=@{$consumed_uniq};
}
foreach my $slot (@{$reservable_future_order}) {
if ($reservable_future->{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
my ($new_uniq_start,$new_uniq_end) = ($1,$2);
next if (!
($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
}
$useslot = $slot;
last;
}
if ($useslot) {
$slotstatus = 'RESERVABLE_LATER';
$datemsg = $reservable_future->{$useslot}{'startreserve'};
}
}
}
}
}
}
}
return ($slotstatus,$datemsg);
}
# JB, 9/24/2002: Any changes in this function may require a change
# in lonnavmaps::resource::getDateStatus.
sub check_access {
my ($id,$symb) = @_;
my $date ='';
my $status;
my $datemsg = '';
my $lastdate = '';
my $type;
my $passed;
if ($env{'request.state'} eq "construct") {
if ($env{'form.problemstate'}) {
if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
&& &hide_problem_status())) {
return ('CANNOT_ANSWER',
&mt('is in this state due to author settings.'));
}
} else {
return ($env{'form.problemstate'},
&mt('is in this state due to author settings.'));
}
}
&Apache::lonxml::debug("in construction ignoring dates");
$status='CAN_ANSWER';
$datemsg=&mt('is in under construction');
# return ($status,$datemsg);
}
&Apache::lonxml::debug("checking for part :$id:");
&Apache::lonxml::debug("time:".time);
unless ($symb) {
($symb)=&Apache::lonnet::whichuser();
}
&Apache::lonxml::debug("symb:".$symb);
#if ($env{'request.state'} ne "construct" && $symb ne '') {
if ($env{'request.state'} ne "construct") {
my $idacc = &Apache::lonnet::EXT("resource.$id.acc",$symb);
my $allowed=&Apache::loncommon::check_ip_acc($idacc);
if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
$status='INVALID_ACCESS';
$date=&mt("can not be accessed from your location.");
return($status,$date);
}
if ($env{'form.grade_imsexport'}) {
if (($env{'request.course.id'}) &&
(&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
return ('SHOW_ANSWER');
}
}
foreach my $temp ("opendate","duedate","answerdate") {
$lastdate = $date;
if ($temp eq 'duedate') {
$date = &due_date($id,$symb);
} else {
$date = &Apache::lonnet::EXT("resource.$id.$temp",$symb);
}
my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb);
if ($thistype =~ /^(con_lost|no_such_host)/ ||
$date =~ /^(con_lost|no_such_host)/) {
$status='UNAVAILABLE';
$date=&mt("may open later.");
return($status,$date);
}
if ($thistype eq 'date_interval') {
if ($temp eq 'opendate') {
$date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date;
}
if ($temp eq 'answerdate') {
$date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date;
}
}
&Apache::lonxml::debug("found :$date: for :$temp:");
if ($date eq '') {
$date = &mt("an unknown date"); $passed = 0;
} elsif ($date eq 'con_lost') {
$date = &mt("an indeterminate date"); $passed = 0;
} else {
if (time < $date) { $passed = 0; } else { $passed = 1; }
$date = &Apache::lonlocal::locallocaltime($date);
}
if (!$passed) { $type=$temp; last; }
}
&Apache::lonxml::debug("have :$type:$passed:");
if ($passed) {
$status='SHOW_ANSWER';
$datemsg=$date;
} elsif ($type eq 'opendate') {
$status='CLOSED';
$datemsg = &mt('will open on [_1]',$date);
} elsif ($type eq 'duedate') {
$status='CAN_ANSWER';
$datemsg = &mt('is due at [_1]',$date);
} elsif ($type eq 'answerdate') {
$status='CLOSED';
$datemsg = &mt('was due on [_1], and answers will be available on [_2]',
$lastdate,$date);
}
}
if ($status eq 'CAN_ANSWER' ||
(($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
#check #tries, and if correct.
my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb);
if ( $tries eq '' ) { $tries = '0'; }
if ( $maxtries eq '' &&
$env{'request.state'} ne 'construct') { $maxtries = '2'; }
if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
# if (correct and show prob status) or excused then CANNOT_ANSWER
if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
&& (&show_problem_status()) ) {
if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
(&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) {
$status = 'CANNOT_ANSWER';
}
} elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
$status = 'CANNOT_ANSWER';
}
if ($status eq 'CANNOT_ANSWER'
&& &show_answer_problem_status()) {
$status = 'SHOW_ANSWER';
}
}
if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb);
&Apache::lonxml::debug("looking for interval @interval");
if ($interval[0]=~ /^\d+/) {
my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
&Apache::lonxml::debug("looking for accesstime $first_access");
if (!$first_access) {
$status='NOT_YET_VIEWED';
my $due_date = &due_date($id,$symb);
my $seconds_left = $due_date - time;
my ($timelimit) = ($interval[0] =~ /^(\d+)/);
if ($seconds_left > $timelimit || $due_date eq '') {
$seconds_left = $timelimit;
}
$datemsg=&seconds_to_human_length($seconds_left);
}
}
}
#if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
# (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
# return ('UNCHECKEDOUT','needs to be checked out');
#}
&Apache::lonxml::debug("sending back :$status:$datemsg:");
if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
&Apache::lonxml::debug("should be allowed to browse a resource when closed");
$status='CAN_ANSWER';
$datemsg=&mt('is closed but you are allowed to view it');
}
return ($status,$datemsg);
}
# this should work exactly like the copy in lonnavmaps.pm
sub due_date {
my ($part_id,$symb,$udom,$uname)=@_;
my $date;
my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
$udom,$uname);
&Apache::lonxml::debug("looking for interval $part_id $symb @interval");
my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
$udom,$uname);
&Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
if ($interval[0] =~ /\d+/) {
my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
&Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
if (defined($first_access)) {
my ($timelimit) = ($interval[0] =~ /^(\d+)/);
my $interval = $first_access+$timelimit;
$date = (!$due_date || $interval < $due_date) ? $interval
: $due_date;
} else {
$date = $due_date;
}
} else {
$date = $due_date;
}
return $date;
}
sub seconds_to_human_length {
my ($length)=@_;
my $seconds=$length%60; $length=int($length/60);
my $minutes=$length%60; $length=int($length/60);
my $hours=$length%24; $length=int($length/24);
my $days=$length;
my $timestr;
if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
if ($hours > 0) { $timestr.=($timestr?", ":"").
&mt('[quant,_1,hour]',$hours); }
if ($minutes > 0) { $timestr.=($timestr?", ":"").
&mt('[quant,_1,minute]',$minutes); }
if ($seconds > 0) { $timestr.=($timestr?", ":"").
&mt('[quant,_1,second]',$seconds); }
return $timestr;
}
sub showhash {
my (%hash) = @_;
&showhashsubset(\%hash,'.');
return '';
}
sub showarray {
my ($array)=@_;
my $string="(";
foreach my $elm (@{ $array }) {
if (ref($elm) eq 'ARRAY') {
$string.=&showarray($elm);
} elsif (ref($elm) eq 'HASH') {
$string.= "HASH --- \n<br />";
$string.= &showhashsubset($elm,'.');
} else {
$string.="$elm,"
}
}
chop($string);
$string.=")";
return $string;
}
sub showhashsubset {
my ($hash,$keyre) = @_;
my $resultkey;
foreach $resultkey (sort(keys(%$hash))) {
if ($resultkey !~ /$keyre/) { next; }
if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
&Apache::lonxml::debug("$resultkey ---- ".
&showarray($$hash{$resultkey}));
} elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
&Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
&showhashsubset($$hash{$resultkey},'.');
} else {
&Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
}
}
&Apache::lonxml::debug("\n<br />restored values^</br>\n");
return '';
}
sub setuppermissions {
$Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
unless ($Apache::lonhomework::browse eq 'F') {
$Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
}
my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
if (! $viewgrades &&
exists($env{'request.course.sec'}) &&
$env{'request.course.sec'} !~ /^\s*$/) {
$viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
'/'.$env{'request.course.sec'});
if ($viewgrades) {
$Apache::lonhomework::viewgradessec = $env{'request.course.sec'};
}
}
$Apache::lonhomework::viewgrades = $viewgrades;
if ($Apache::lonhomework::browse eq 'F' &&
$env{'form.devalidatecourseresdata'} eq 'on') {
my (undef,$courseid) = &Apache::lonnet::whichuser();
&Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
$env{"course.$courseid.domain"});
}
my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
if (! $modifygrades &&
exists($env{'request.course.sec'}) &&
$env{'request.course.sec'} !~ /^\s*$/) {
$modifygrades =
&Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
'/'.$env{'request.course.sec'});
if ($modifygrades) {
$Apache::lonhomework::modifygradessec = $env{'request.course.sec'};
}
}
$Apache::lonhomework::modifygrades = $modifygrades;
my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
if (! $queuegrade &&
exists($env{'request.course.sec'}) &&
$env{'request.course.sec'} !~ /^\s*$/) {
$queuegrade =
&Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
'/'.$env{'request.course.sec'});
}
$Apache::lonhomework::queuegrade = $queuegrade;
return '';
}
sub unset_permissions {
undef($Apache::lonhomework::queuegrade);
undef($Apache::lonhomework::modifygrades);
undef($Apache::lonhomework::modifygradessec);
undef($Apache::lonhomework::viewgrades);
undef($Apache::lonhomework::viewgradessec);
undef($Apache::lonhomework::browse);
}
sub setupheader {
my $request=$_[0];
&Apache::loncommon::content_type($request,'text/html');
if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
&Apache::loncommon::no_cache($request);
}
# $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
# 'lastrevisiondate'));
$request->send_http_header;
return OK if $request->header_only;
return ''
}
sub handle_save_or_undo {
my ($request,$problem,$result,$getobjref) = @_;
my $file = &Apache::lonnet::filelocation("",$request->uri);
my $filebak =$file.".bak";
my $filetmp =$file.".tmp";
my $error=0;
if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
my $error=0;
if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
if (!$error) {
&Apache::lonxml::info("<p><b>".
&mt("Undid changes, Switched [_1] and [_2]",
'<span class="LC_filename">'.$filebak.
'</span>',
'<span class="LC_filename">'.$file.
'</span>')."</b></p>");
} else {
&Apache::lonxml::info("<p><span class=\"LC_error\">".
&mt("Unable to undo, unable to switch [_1] and [_2]",
'<span class="LC_filename">'.
$filebak.'</span>',
'<span class="LC_filename">'.
$file.'</span>')."</span></p>");
$error=1;
}
} else {
&Apache::lonnet::correct_line_ends($result);
my $fs=Apache::File->new(">$filebak");
if (defined($fs)) {
print $fs $$problem;
} else {
&Apache::lonxml::info("<span class=\"LC_error\">".
&mt("Unable to make backup [_1]",
'<span class="LC_filename">'.
$filebak.'</span>')."</span>");
$error=2;
}
my $fh=Apache::File->new(">$file");
if (defined($fh)) {
print $fh $$result;
if (ref($getobjref) eq 'SCALAR') {
if ($file =~ m{([^/]+)\.(html?)$}) {
my $fname = $1;
my $ext = $2;
my $path = $file;
$path =~ s/\Q$fname\E\.\Q$ext\E$//;
my (%allfiles,%codebase);
&Apache::lonnet::extract_embedded_items($file,\%allfiles,
\%codebase,$result);
if (keys(%allfiles) > 0) {
my $url = $request->uri;
my $state = <<STATE;
<input type="hidden" name="action" value="upload_embedded" />
<input type="hidden" name="url" value="$url" />
STATE
$$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
"<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
"<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
&Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
{'error_on_invalid_names' => 1,
'ignore_remote_references' => 1,});
}
}
}
} else {
&Apache::lonxml::info('<span class="LC_error">'.
&mt("Unable to write to [_1]",
'<span class="LC_filename">'.
$file.'</span>').
'</span>');
$error|=4;
}
}
return $error;
}
sub analyze_header {
my ($request) = @_;
my $js = &Apache::lonxml::setmode_javascript();
# Breadcrumbs
my $text = 'Authoring Space';
my $href = &Apache::loncommon::authorspace($request->uri);
if ($env{'request.course.id'}) {
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
if ($href eq "/priv/$cdom/$cnum/") {
$text = 'Course Authoring Space';
}
}
my $brcrum = [{'href' => $href,
'text' => $text},
{'href' => '',
'text' => 'Problem Testing'},
{'href' => '',
'text' => 'Analyzing a problem'}];
my $result =
&Apache::loncommon::start_page('Analyzing a problem',
$js,
{'bread_crumbs' => $brcrum,})
.&Apache::loncommon::head_subbox(
&Apache::loncommon::CSTR_pageheader());
my %lt = &Apache::lonlocal::texthash(
edit => 'Edit',
editxml => 'EditXML',
);
$result .=
'<form name="lonhomework" method="post" action="'.
&HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
'<input type="hidden" name="problemmode" value="'.
$env{'form.problemmode'}.'" />'.
&Apache::structuretags::remember_problem_state().'
<div class="LC_edit_problem_analyze_header">';
my %editors = &Apache::loncommon::permitted_editors();
foreach my $item ('editxml','edit') {
next unless ($editors{$item});
$result .= '<input type="button" name="submitmode" value="'.$lt{$item}.'" '.
'onclick="javascript:setmode(this.form,'."'$item'".')" />'.
"\n";
}
$result .=
'<hr />
<input type="button" name="submitmode" value="'.&mt("View").'" '.
'onclick="javascript:setmode(this.form,'."'view'".')" />
<hr />
</div>'
.&Apache::lonxml::message_location().
'</form>';
&Apache::lonxml::add_messages(\$result);
$request->print($result);
$request->rflush();
}
sub analyze_footer {
my ($request) = @_;
$request->print(&Apache::loncommon::end_page());
$request->rflush();
}
sub analyze {
my ($request,$file) = @_;
&Apache::lonxml::debug("Analyze");
my $result;
my %overall;
my %seedexample;
my %allparts;
my $rndseed=$env{'form.rndseed'};
&analyze_header($request);
my %prog_state=
&Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
&Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
if (&Apache::loncommon::connection_aborted($request)) { return; }
my $thisseed=$i+$rndseed;
my $subresult=&Apache::lonnet::ssi($request->uri,
('grade_target' => 'analyze'),
('rndseed' => $thisseed));
(my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
my %analyze=&Apache::lonnet::str2hash($subresult);
my @parts;
if (ref($analyze{'parts'}) eq 'ARRAY') {
@parts=@{ $analyze{'parts'} };
}
foreach my $part (@parts) {
if (!exists($allparts{$part})) {$allparts{$part}=1;};
if ($analyze{$part.'.type'} eq 'numericalresponse' ||
$analyze{$part.'.type'} eq 'stringresponse' ||
$analyze{$part.'.type'} eq 'formularesponse' ) {
foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
my $i=0;
foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
push( @{ $overall{$part.'.answer'}[$i] },
$answer_part);
my $concatanswer= join("\0",@{ $answer_part });
if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
$answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
}
$seedexample{join("\0",$part,$i,@{$answer_part})}=
$thisseed;
$i++;
}
}
if (!keys(%{ $analyze{$part.'.answer'} })) {
my $answer_part =
['<span class="LC_error">'.&mt('Error').'</span>'];
$seedexample{join("\0",$part,0,@{$answer_part})}=
$thisseed;
push( @{ $overall{$part.'.answer'}[0] },
$answer_part);
}
}
}
}
&Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
$request->print('<hr />'
.'<h3>'
.&mt('List of possible answers')
.'</h3>'
);
foreach my $part (sort(keys(%allparts))) {
if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
(@{$overall{$part.'.answer'}} > 0)) {
for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
$request->print(&Apache::loncommon::start_data_table()
.&Apache::loncommon::start_data_table_header_row()
.'<th colspan="'.($num_cols+1).'">'
.&mt('Part').' '.$part
);
if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
$request->print(' '.&mt('Answer [_1]',$i+1));
}
$request->print('</th>'
.&Apache::loncommon::end_data_table_header_row()
);
my %frequency;
foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
$frequency{join("\0",@{ $answer })}++;
}
$request->print(&Apache::loncommon::start_data_table_header_row()
.'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
.'<th>'.&mt('Frequency').'<br />'
.'('.&mt('click for example').')</th>'
.&Apache::loncommon::end_data_table_header_row()
);
foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
$request->print(&Apache::loncommon::start_data_table_row()
.'<td>'
.join('</td><td>',split("\0",$answer))
.'</td>'
.'<td>'
.'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
.'</td>'
.&Apache::loncommon::end_data_table_row()
);
}
$request->print(&Apache::loncommon::end_data_table());
}
} else {
$request->print('<p class="LC_warning">'
.&mt('Response [_1] is not analyzable at this time.',$part)
.'</p>'
);
}
}
if (scalar(keys(%allparts)) == 0 ) {
$request->print('<p class="LC_warning">'
.&mt('Found no analyzable responses in this problem.'
.' Currently only Numerical, Formula and String response styles are supported.')
.'</p>'
);
}
&Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
&analyze_footer($request);
&Apache::lonhomework::showhash(%overall);
return $result;
}
{
my $show_problem_status;
sub reset_show_problem_status {
undef($show_problem_status);
}
sub set_show_problem_status {
my ($new_status) = @_;
$show_problem_status = lc($new_status);
}
sub hide_problem_status {
return ($show_problem_status eq 'no'
|| $show_problem_status eq 'no_feedback_ever');
}
sub show_problem_status {
return ($show_problem_status eq 'yes'
|| $show_problem_status eq 'answer'
|| $show_problem_status eq '');
}
sub show_some_problem_status {
return ($show_problem_status eq 'no');
}
sub show_no_problem_status {
return ($show_problem_status eq 'no_feedback_ever');
}
sub show_answer_problem_status {
return ($show_problem_status eq 'answer');
}
}
sub editxmlmode {
my ($request,$file) = @_;
my $result;
my $problem=&Apache::lonnet::getfile($file);
if ($problem eq -1) {
&Apache::lonxml::error(
'<p class="LC_error">'
.&mt('Unable to find [_1]',
'<span class="LC_filename">'.$file.'</span>')
.'</p>');
$problem='';
}
if (($env{'form.problemmode'} eq 'saveeditxml') ||
($env{'form.problemmode'} eq 'saveviewxml') ||
($env{'form.problemmode'} eq 'undoxml')) {
my $error=&handle_save_or_undo($request,\$problem,
\$env{'form.editxmltext'});
if (!$error) { $problem=&Apache::lonnet::getfile($file); }
}
&Apache::lonhomework::showhashsubset(\%env,'^form');
if ($env{'form.problemmode'} eq 'saveviewxml') {
&Apache::lonhomework::showhashsubset(\%env,'^form');
$env{'form.problemmode'}='view';
&renderpage($request,$file);
} else {
my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
if ($cols > 80) { $cols = 80; }
if ($cols < 70) { $cols = 70; }
if ($rows < 20) { $rows = 20; }
my $js =
&Apache::edit::js_change_detection().
&Apache::loncommon::resize_textarea_js().
&Apache::lonxml::setmode_javascript().
&Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
# Breadcrumbs
my $text = 'Authoring Space';
my $href = &Apache::loncommon::authorspace($request->uri);
if ($env{'request.course.id'}) {
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
if ($href eq "/priv/$cdom/$cnum/") {
$text = 'Course Authoring Space';
}
}
my $brcrum = [{'href' => $href,
'text' => $text},
{'href' => '',
'text' => 'Problem Editing'}];
my $start_page =
&Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
{'no_auto_mt_title' => 1,
'only_body' => 0,
'add_entries' => {
'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
},
'bread_crumbs' => $brcrum,
});
$result=$start_page
.&Apache::loncommon::head_subbox(
&Apache::loncommon::CSTR_pageheader());
$result.=&renderpage($request,$file,['no_output_web'],1).
'<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
&HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
&Apache::structuretags::remember_problem_state().'
<div class="LC_edit_problem_header">
<div class="LC_edit_problem_header_title">'.
&mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
'</div><div class="LC_edit_actionbar" id="actionbar">';
$result.='<input type="hidden" name="problemmode" value="saveedit" />'.
&Apache::structuretags::problem_edit_buttons('editxml');
$result.='<div>';
$result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
my $nocodemirror = &Apache::loncommon::nocodemirror();
unless ($nocodemirror) {
# dropdown menus
$result .= Apache::lonmenu::create_submenu("#", "",
&mt("Problem Templates"), template_dropdown_datastructure());
$result .= Apache::lonmenu::create_submenu("#", "",
&mt("Response Types"), responseblock_dropdown_datastructure());
$result .= Apache::lonmenu::create_submenu("#", "",
&mt("Conditional Blocks"), conditional_scripting_datastructure());
$result .= Apache::lonmenu::create_submenu("#", "",
&mt("Miscellaneous"), misc_datastructure());
}
$result .= Apache::lonmenu::create_submenu("#", "",
&mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
'" style="vertical-align:text-bottom; height: auto; margin:0; "/>',
helpmenu_datastructure(),"");
$result.="</ol></div>";
$result .= '</div></div>' .
&Apache::lonxml::message_location() .
&Apache::loncommon::xmleditor_js() .
'<textarea ' . &Apache::edit::element_change_detection() .
' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
' name="editxmltext" id="LC_editxmltext">' .
&HTML::Entities::encode($problem,'<>&"') .
'</textarea> <div id="LC_aftertextarea"> </div> </form>';
my $resource = $env{'request.ambiguous'};
unless ($nocodemirror) {
$result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
<script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
<script>
CodeMirror.defineMode("mixedmode", function(config) {
return CodeMirror.multiplexingMode(
CodeMirror.getMode(config, "xml"),
{
open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
mode: CodeMirror.getMode(config, "perl"),
delimStyle: "tag",
}
);
});
var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
{
mode: "mixedmode",
lineWrapping: true,
lineNumbers: true,
tabSize: 4,
indentUnit: 4,
autoCloseTags: true,
autoCloseBrackets: true,
height: "auto",
styleActiveLine: true,
extraKeys: {
"Tab": "indentMore",
"Shift-Tab": "indentLess",
}
});
restoreScrollPosition("'.$resource.'");
</script>';
}
$result .= &Apache::loncommon::end_page();
&Apache::lonxml::add_messages(\$result);
$request->print($result);
}
return '';
}
#
# Render the page in whatever target desired.
#
sub renderpage {
my ($request,$file,$targets,$return_string,$donebuttonmsg,$viewasuser,$symb) = @_;
my @targets = @{$targets || [&get_target()]};
&Apache::lonhomework::showhashsubset(\%env,'form.');
&Apache::lonxml::debug("Running targets ".join(':',@targets));
my $overall_result;
foreach my $target (@targets) {
# FIXME need to do something intelligent when a problem goes
# from viewable to not viewable due to map conditions
#&setuppermissions();
#if ( $Apache::lonhomework::browse ne '2'
# && $Apache::lonhomework::browse ne 'F' ) {
# $request->print(" You most likely shouldn't see me.");
#}
#my $t0 = [&gettimeofday()];
my $output=1;
if ($target eq 'no_output_web') {
$target = 'web'; $output=0;
}
my $problem=&Apache::lonnet::getfile($file);
my $result;
if ($problem eq -1) {
$problem='';
my $filename=(split('/',$file))[-1];
my $error =
'<p class="LC_error">'
.&mt('Unable to find [_1]',
'<span class="LC_filename">'.$filename.'</span>')
."</p>";
$result.=
&Apache::loncommon::simple_error_page($request,'Not available',
$error,{'no_auto_mt_msg' => 1});
return;
}
my %mystyle;
if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
$env{'request.user_in_effect'} = $viewasuser;
}
&Apache::lonxml::debug("Should be parsing now");
$result .= &Apache::lonxml::xmlparse($request, $target, $problem,
&setup_vars($target),%mystyle);
&finished_parsing();
if (!$output) { $result = ''; }
#$request->print("Result follows:");
if ($target eq 'modified') {
&handle_save_or_undo($request,\$problem,\$result);
} else {
if ($target eq 'analyze') {
$result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
undef(%Apache::lonhomework::analyze);
} elsif ($target eq 'web') {
if ($donebuttonmsg) {
$result =~ s{</body>}{};
$result.= &Apache::loncommon::confirmwrapper(&Apache::lonhtmlcommon::confirm_success($donebuttonmsg,1))."\n</body>";
}
}
#my $td=&tv_interval($t0);
#if ( $Apache::lonxml::debug) {
#$result =~ s:</body>::;
#$result.="<br />Spent $td seconds processing target $target\n</body>";
#}
# $request->print($result);
$overall_result.=$result;
if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
my ($vuname,$vudom) = split(/:/,$viewasuser);
$overall_result .= &Apache::grades::view_as_user($symb,$vuname,$vudom).
'</body></html>';
}
# $request->rflush();
}
if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
undef($env{'request.user_in_effect'});
}
#$request->print(":Result ends");
#my $td=&tv_interval($t0);
}
if (!$return_string) {
&Apache::lonxml::add_messages(\$overall_result);
$request->print($overall_result);
$request->rflush();
} else {
return $overall_result;
}
}
sub finished_parsing {
undef($Apache::lonhomework::parsing_a_problem);
undef($Apache::lonhomework::parsing_a_task);
}
# function extracted from get_template_html
# returns "key" -> list
# key: path of template
# value 1: title
# value 2: category
# value 3: name of help topic ???
sub get_template_list{
my ($extension) = @_;
my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
'/templates/*.'.$extension);
@files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
(&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
&mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
@files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
return @files;
}
sub get_template_html {
my ($extension) = @_;
my $result;
my @allnames;
&Apache::lonxml::debug("Looking for :$extension:");
my $glob_extension = $extension;
if ($extension eq 'survey' || $extension eq 'exam') {
$glob_extension = 'problem';
}
my @files = &get_template_list($extension);
my ($midpoint,$seconddiv,$numfiles);
my @noexamplelink = ('blank.problem','blank.library','script.library');
$numfiles = 0;
foreach my $file (@files) {
next if ($file->[1] !~ /\S/);
$numfiles ++;
}
if ($numfiles > 0) {
$result = '<div class="LC_left_float">';
$midpoint = int($numfiles/2);
if ($numfiles%2) {
$midpoint ++;
}
}
my $count = 0;
my $currentcategory='';
my $first = 1;
my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
foreach my $file (@files) {
next if ($file->[1] !~ /\S/);
if ($file->[2] ne $currentcategory) {
$currentcategory=$file->[2];
if ((!$seconddiv) && ($count >= $midpoint)) {
$result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
$seconddiv = 1;
} elsif (!$first) {
$result.='</div>'."\n";
} else {
$first = 0;
}
$result.= '<div class="LC_Box">'."\n"
.'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
$count++;
}
$result .=
'<label><input type="radio" name="template" value="'.$file->[0].'" />'.
$file->[1].'</label>';
if ($file->[3]) {
$result.=&Apache::loncommon::help_open_topic($file->[3]);
}
# Provide example link
my $filename=$file->[0];
$filename=~s{^\Q$londocroot\E}{};
if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
$result .= ' <span class="LC_fontsize_small">'
.&Apache::loncommon::modal_link(
$filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
.'</span>';
}
$result .= '<br />'."\n";
$count ++;
}
if ($numfiles > 0) {
$result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
}
return $result;
}
sub newproblem {
my ($request) = @_;
if ($env{'form.mode'} eq 'blank'){
my $dest = &Apache::lonnet::filelocation("",$request->uri);
my $templatefilename =
$request->dir_config('lonIncludes').'/templates/blank.problem';
&File::Copy::copy($templatefilename,$dest);
&renderpage($request,$dest);
return;
}
my $errormsg;
if ($env{'form.template'}) {
my $file;
my ($extension) = ($env{'form.template'} =~ /\.(\w+)$/);
if ($extension) {
my @files = &get_template_list($extension);
foreach my $poss (@files) {
if (ref($poss) eq 'ARRAY') {
if ($env{'form.template'} eq $poss->[0]) {
$file = $env{'form.template'};
last;
}
}
}
if ($file) {
my $dest = &Apache::lonnet::filelocation("",$request->uri);
&File::Copy::copy($file,$dest);
&renderpage($request,$dest);
return;
} else {
$errormsg = '<p class="LC_error">'.&mt('Invalid template file.').'</p>';
}
} else {
$errormsg = '<p class="LC_error">'.&mt('Invalid template file; template needs to be a .problem, .library, or .task file.').'</p>';
}
}
my ($extension) = ($request->uri =~ m/\.(\w+)$/);
&Apache::lonxml::debug("Looking for :$extension:");
my $templatelist=&get_template_html($extension);
if ($env{'form.newfile'} && !$templatelist) {
# no templates found
my $templatefilename =
$request->dir_config('lonIncludes').'/templates/blank.'.$extension;
&Apache::lonxml::debug("$templatefilename");
my $dest = &Apache::lonnet::filelocation("",$request->uri);
&File::Copy::copy($templatefilename,$dest);
&renderpage($request,$dest);
} else {
my $url=&HTML::Entities::encode($request->uri,'<>&"');
my $dest = &Apache::lonnet::filelocation("",$request->uri);
my $instructions;
my $text = 'Authoring Space';
my $href = &Apache::loncommon::authorspace($request->uri);
if ($env{'request.course.id'}) {
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
if ($href eq "/priv/$cdom/$cnum/") {
$text = 'Course Authoring Space';
}
}
my $brcrum = [{'href' => $href,
'text' => $text},
{'href' => '',
'text' => "Create New $extension"}];
my $start_page =
&Apache::loncommon::start_page("Create New $extension",
undef,
{'bread_crumbs' => $brcrum,});
$request->print(
$start_page
.&Apache::loncommon::head_subbox(
&Apache::loncommon::CSTR_pageheader())
.'<h1>'.&mt("Creating a new $extension resource.")."</h1>
$errormsg
".&mt("The requested file [_1] currently does not exist.",
'<span class="LC_filename">'.$url.'</span>').'
<p class="LC_info">
'.&mt("To create a new $extension, select a template from the".
" list below. Then click on the \"Create $extension\" button.").'
</p><div><form action="'.$url.'" method="post">');
if (defined($templatelist)) {
$request->print($templatelist);
}
$request->print('<br /><input type="submit" name="newfile" value="'.
&mt("Create $extension").'" />');
$request->print('</form></div>'.&Apache::loncommon::end_page());
}
return;
}
sub update_construct_style {
if ($env{'request.state'} eq "construct"
&& $env{'form.problemmode'} eq 'view'
&& defined($env{'form.submitted'})
&& !defined($env{'form.resetdata'})
&& !defined($env{'form.newrandomization'})) {
if ((!$env{'form.style_file'} && $env{'construct.style'})
||$env{'form.clear_style_file'}) {
&Apache::lonnet::delenv('construct.style');
} elsif ($env{'form.style_file'}
&& $env{'construct.style'} ne $env{'form.style_file'}) {
&Apache::lonnet::appenv({'construct.style' =>
$env{'form.style_file'}});
}
}
}
#
# Sets interval for current user so time left will be zero, either for the entire folder
# containing the current resource, or just the resource, depending on value of first item
# in interval array retrieved from EXT("resource.0.interval");
#
sub zero_timer {
my ($symb) = @_;
my ($hastimeleft,$first_access,$now);
my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
if (@interval > 1) {
if ($interval[1] eq 'course') {
return ('fail',&mt('Ending of timed events not supported for intervals set course-wide'));
} else {
my $now = time;
my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
if ($first_access > 0) {
my ($timelimit,$donesuffix) = split(/_/,$interval[0],2);
if ($donesuffix =~ /^done(?:|\:[^\:]+\:)(.*)$/) {
my ($dummy,$proctor,$secret) = split(/_/,$1);
if (($proctor) && ($secret ne '')) {
my $key = $env{'form.LC_interval_done_proctorpass'};
$key =~ s/^\s+//;
$key =~ s/\s+$//;
if ($env{'form.LC_interval_done_proctorpass'} ne $secret) {
return ('fail',
&mt('Incorrect key entered by proctor'));
}
}
if ($first_access+$timelimit > $now) {
my $done_time = $now - $first_access;
my $snum = 1;
if ($interval[1] eq 'map') {
$snum = 2;
}
my $result =
&Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
$snum,$done_time,
'date_interval',
$env{'user.name'},
$env{'user.domain'});
if ($result eq '') {
# Record action in "User Notes"
&Apache::lonmsg::store_instructor_comment(
'Pressed Done button for symb:<br />'.$symb,
$env{'user.name'}, $env{'user.domain'});
return ('ok');
} else {
return ('fail',&mt('Error ending timed event: [_1]',$result));
}
} else {
return ('fail',&mt('Timed event already ended'));
}
} else {
return ('fail',&mt('Timed event can not be ended before the time limit'));
}
} else {
return ('fail',&mt('Timer not yet started for this timed event'));
}
}
} else {
return ('fail',&mt('No timer in use'));
}
return();
}
sub handler {
#my $t0 = [&gettimeofday()];
my $request=$_[0];
$Apache::lonxml::request=$request;
$Apache::lonxml::debug=$env{'user.debug'};
$env{'request.uri'}=$request->uri;
&setuppermissions();
# -------------------------------------- Flag and buffer for registered cleanup
$registered_cleanup=0;
undef(@Apache::lonhomework::ltipassback);
my $file=&Apache::lonnet::filelocation("",$request->uri);
#check if we know where we are
if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
# if we are browsing we might not be able to know where we are
if ($Apache::lonhomework::browse ne 'F' &&
$env{'request.state'} ne "construct") {
#should know where we are, so ask
&unset_permissions();
$request->internal_redirect('/adm/ambiguous');
return OK;
}
}
if (&setupheader($request)) {
&unset_permissions();
return OK;
}
&Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
&Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
my ($symb) = &Apache::lonnet::whichuser();
&Apache::lonxml::debug('symb is '.$symb);
if ($env{'request.state'} eq "construct") {
if ( -e $file ) {
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['problemmode']);
if (!(defined $env{'form.problemmode'})) {
#first visit to problem in construction space
$env{'form.problemmode'}= 'view';
&renderpage($request,$file);
} elsif (($env{'form.problemmode'} eq 'editxml') ||
($env{'form.problemmode'} eq 'saveeditxml') ||
($env{'form.problemmode'} eq 'saveviewxml') ||
($env{'form.problemmode'} eq 'undoxml')) {
my %editors = &Apache::loncommon::permitted_editors();
if (($editors{'xml'}) || ($env{'form.problemmode'} eq 'saveviewxml') || ($env{'form.problemmode'} eq 'undoxml')) {
&editxmlmode($request,$file);
} else {
&update_construct_style();
&renderpage($request,$file);
}
} elsif ($env{'form.problemmode'} eq 'calcanswers') {
&analyze($request,$file);
} else {
&update_construct_style();
&renderpage($request,$file);
}
} else {
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
['mode']);
# requested file doesn't exist in contruction space
&newproblem($request);
}
} else {
# Set the event timer to zero if the "done button" was clicked. The button is
# part of the doneButton form created in lonmenu.pm
my ($donebuttonresult,$donemsg,$viewasuser);
if ($symb && $env{'form.LC_interval_done'} eq 'true') {
($donebuttonresult,$donemsg) = &zero_timer($symb);
undef($env{'form.LC_interval_done'});
undef($env{'form.LC_interval_done_proctorpass'});
}
if (($env{'form.LC_viewas'} ne '') && $symb && $env{'request.course.id'} &&
($Apache::lonhomework::viewgrades || $Apache::lonhomework::modifygrades)) {
if ($env{'form.LC_viewas'} =~ /^($match_username):($match_domain)$/) {
my ($possuname,$possudom) = ($1,$2);
my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
my ($canview,$posssec);
if ($env{'request.course.sec'} ne '') {
if ($Apache::lonhomework::modifygradessec eq $env{'request.course.sec'}) {
$canview = 'section';
$posssec = $env{'request.course.sec'};
} elsif ($Apache::lonhomework::viewgradessec eq $env{'request.course.sec'}) {
$canview = 'section';
$posssec = $env{'request.course.sec'};
}
}
my $crstype = &Apache::loncommon::course_type();
if (&Apache::loncourseuser::is_course_user($possudom,$possuname,$cdom,$cnum,
$canview,$crstype,$posssec)) {
$viewasuser = $possuname.':'.$possudom;
}
}
undef($env{'form.LC_viewas'});
}
# just render the page normally outside of construction space
&Apache::lonxml::debug("not construct");
&renderpage($request,$file,undef,undef,$donemsg,$viewasuser,$symb);
if (@Apache::lonhomework::ltipassback) {
unless ($registered_cleanup) {
my $handlers = $request->get_handlers('PerlCleanupHandler');
$request->set_handlers('PerlCleanupHandler' =>
[\&do_ltipassback,@{$handlers}]);
$registered_cleanup=1;
}
}
}
#my $td=&tv_interval($t0);
#&Apache::lonxml::debug("Spent $td seconds processing");
# always turn off debug messages
$Apache::lonxml::debug=0;
&unset_permissions();
return OK;
}
sub template_dropdown_datastructure {
# gathering the all templates and their path, title, category and help topic
my @templates = get_template_list('problem');
# template category => title
my %tmplthash = ();
# template title => path
my %tmpltcontent = ();
foreach my $template (@templates){
# put in hash if the template is not empty
unless ($template->[1] eq ''){
push(@{$tmplthash{$template->[2]}}, $template->[1]);
push(@{$tmpltcontent{$template->[1]}},$template->[0]);
}
}
my $catList = [];
foreach my $cat (sort keys %tmplthash) {
my $catItems = [];
foreach my $title (sort @{$tmplthash{$cat}}) {
my $path = $tmpltcontent{$title}->[0];
my $code;
open(FH, "<$path");
while(<FH>){
$code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
}
close(FH);
if ($code ne '') {
my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
my $currItem = [$href, $title, undef];
push @{$catItems}, $currItem;
}
}
push @{$catList}, [$catItems, $cat, undef];
}
return $catList;
}
sub responseblock_dropdown_datastructure {
my $mathCat = [
[
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
],
&mt("Math"),
undef
];
my $miscCat = [
[
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
],
&mt("Miscellaneous"),
undef
];
my $chemCat = [
[
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
],
&mt("Chemistry"),
undef
];
my $textCat = [
[
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
],
&mt("Text"),
undef
];
return [$mathCat, $miscCat, $chemCat, $textCat];
}
sub conditional_scripting_datastructure {
# TODO: corresponding routines should be used for the javascript:insertText parts
# instead of the placeholder routine default_xml_tag with the tags
# e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
# returns the corresponding content for this case
#TODO translated is currently temporarily here, another solution should be found where the
# needed string can be retrieved
my $translatedTag = '
<translated>
<lang which="en"></lang>
<lang which="default"></lang>
</translated>';
return [
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
];
}
sub misc_datastructure {
return [
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
];
}
# helper routine for the datastructure building subroutines
sub default_xml_tag {
my ($tag) = @_;
return "\n<$tag></$tag>";
}
sub helpmenu_datastructure {
# filename, title, width, height
my $helpers = [
['Problem_LON-CAPA_Functions.hlp', &mt('Script Functions'), 800, 600],
['Greek_Symbols.hlp', &mt('Greek Symbols'), 500, 600],
['Other_Symbols.hlp', &mt('Other Symbols'), 500, 600],
['Authoring_Output_Tags.hlp', &mt('Output Tags'), 800, 600],
['Authoring_Multilingual_Problems.hlp',
&mt('How to create problems in different languages'), 800, 600],
['loncapa.html', &mt('Language reference'), 800, 600],
];
my $help_structure = [];
foreach my $count (0..(scalar(@{$helpers})-1)) {
my $filename = $helpers->[$count]->[0];
my $title = $helpers->[$count]->[1];
my $width = $helpers->[$count]->[2];
my $height = $helpers->[$count]->[3];
if ($width eq '') {
$width = 500;
}
if ($height eq '') {
$height = 600;
}
my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename',$width,$height,'yes');");
push @{$help_structure}, [$href, $title, undef];
}
return $help_structure;
}
# we need substitution to not break javascript code
sub convert_for_js {
my $return = shift;
$return =~ s|script|ESCAPEDSCRIPT|g;
$return =~ s|\\|\\\\|g;
$return =~ s|\n|\\r\\n|g;
$return =~ s|'|\\'|g;
$return =~ s|'|\\'|g;
return $return;
}
sub do_ltipassback {
if (@Apache::lonhomework::ltipassback) {
my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
my $ip = &Apache::lonnet::get_host_ip($lonhost);
foreach my $item (@Apache::lonhomework::ltipassback) {
&Apache::lonhomework::run_passback($item,$lonhost,$ip);
}
undef(@Apache::lonhomework::ltipassback);
}
return OK;
}
sub run_passback {
my ($item,$lonhost,$ip) = @_;
if (ref($item) eq 'HASH') {
if ((ref($item->{'lti'}) eq 'HASH') && ($item->{'cid'} =~ /^($match_domain)_($match_courseid)$/)) {
my ($cdom,$cnum) = ($1,$2);
my $msgformat = $item->{'lti'}->{'passbackformat'};
my $sigmethod = 'HMAC-SHA1';
my $ltinum = $item->{'ltinum'};
my $id = $item->{'pbid'};
my $url = $item->{'pburl'};
my $type = $item->{'pbtype'};
my $pbscope = $item->{'pbscope'};
my $map = $item->{'pbmap'};
my $symb = $item->{'pbsymb'};
my $uname = $item->{'uname'};
my $udom = $item->{'udom'};
my $uhome = $item->{'uhome'};
my $usec = $item->{'usec'};
my $keynum = $item->{'lti'}->{'cipher'};
my $crsdef = $item->{'crsdef'};
my $scoretype = $item->{'format'};
my $scope = $item->{'scope'};
my $clientip = $item->{'clientip'};
my ($total,$possible,%total_by_symb,%possible_by_symb);
if ((exists($item->{'total_s'})) && (ref($item->{'total_s'}) eq 'HASH')) {
%total_by_symb = %{$item->{'total_s'}};
if ($pbscope eq 'resource') {
if (exists($total_by_symb{$symb})) {
$total = $total_by_symb{$symb};
} else {
$total = $item->{'total'};
}
}
} elsif ($pbscope eq 'resource') {
$total = $item->{'total'};
}
if ((exists($item->{'possible_s'})) && (ref($item->{'possible_s'}) eq 'HASH')) {
%possible_by_symb = %{$item->{'possible_s'}};
if ($pbscope eq 'resource') {
if (exists($possible_by_symb{$symb})) {
$possible = $possible_by_symb{$symb};
} else {
$possible = $item->{'possible'};
}
}
} elsif ($pbscope eq 'resource') {
$possible = $item->{'possible'};
}
if (($pbscope eq 'map') || ($pbscope eq 'nonrec')) {
if ((keys(%total_by_symb)) && (keys(%possible_by_symb))) {
($total,$possible) =
&get_lti_score($uname,$udom,$usec,$map,$pbscope,\%total_by_symb,\%possible_by_symb);
} else {
($total,$possible) = &get_lti_score($uname,$udom,$usec,$map,$pbscope);
}
} elsif ($pbscope eq 'course') {
($total,$possible) = &get_lti_score($uname,$udom,$usec);
}
$item->{'total'} = $total;
$item->{'possible'} = $possible;
if (($id ne '') && ($url ne '') && ($possible)) {
my ($sent,$score,$code,$result) =
&LONCAPA::ltiutils::send_grade($cdom,$cnum,$crsdef,$type,$ltinum,$keynum,$id,
$url,$scoretype,$sigmethod,$msgformat,$total,$possible);
$item->{'score'} = $score;
my ($linkprotector,$linkuri,$no_passback,$appname);
if ($item->{'linkprot'}) {
($linkprotector,$linkuri) = split(/:/,$item->{'linkprot'});
}
if ($sent) {
if ($code == 200) {
if ($item->{'linkprot'}) {
my $skey = join("\0",($linkuri,$linkprotector,$scope));
my $namespace = $cdom.'_'.$cnum.'_lp_passback';
my $store = {
'score' => $score,
'ip' => $ip,
'host' => $Apache::lonnet::perlvar{'lonHostID'},
'protector' => $linkprotector,
'deeplink' => $linkuri,
'scope' => $scope,
'url' => $url,
'id' => $id,
'clientip' => $clientip,
'whodoneit' => $env{'user.name'}.':'.$env{'user.domain'},
};
my $value='';
foreach my $key (keys(%{$store})) {
$value.=&escape($key).'='.&Apache::lonnet::freeze_escape($store->{$key}).'&';
}
$value=~s/\&$//;
&Apache::lonnet::courselog(&escape($linkuri).':'.$uname.':'.$udom.':EXPORT:'.$value);
&Apache::lonnet::cstore({'score' => $score},$skey,$namespace,$udom,$uname,'',$ip,1);
}
} else {
if ($item->{'linkprot'}) {
$no_passback = "Passback response was $code ($result).";
}
}
} else {
if ($item->{'linkprot'}) {
$no_passback = 'No passback of scores.';
}
}
if ($no_passback) {
if ($item->{'linkprot'}) {
my ($ltinum,$ltitype) = ($linkprotector =~ /^(\d+)(c|d)$/);
if ($ltitype eq 'c') {
my %lti = &Apache::lonnet::get_course_lti($cnum,$cdom,'provider');
if (ref($lti{$ltinum}) eq 'HASH') {
$appname = $lti{$ltinum}{'name'};
}
} elsif ($ltitype eq 'd') {
my %lti = &Apache::lonnet::get_domain_lti($cdom,'linkprot');
if (ref($lti{$ltinum}) eq 'HASH') {
$appname = $lti{$ltinum}{'name'};
}
}
$no_passback .= " LTI launcher $linkprotector ($appname) for $linkuri (${cdom}_${cnum})";
&Apache::lonnet::logthis($no_passback." for $uname:$udom");
&Apache::lonnet::log($udom,$uname,$uhome,"$no_passback score=$score total=$total poss=$possible");
if ($item->{'linkprot'}) {
my $pendingkey = &Time::HiRes::time().':'.$uname.':'.$udom.':'.
"$linkuri\0$linkprotector\0$scope";
&Apache::lonnet::put('linkprot_passback_pending',{$pendingkey => $item},$cdom,$cnum);
}
}
}
}
}
}
return;
}
sub get_lti_score {
my ($uname,$udom,$usec,$mapurl,$pbscope,$totals,$possibles) = @_;
my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom,$usec);
if (ref($navmap)) {
my $iterator;
if ($mapurl ne '') {
my $map = $navmap->getResourceByUrl($mapurl);
my $firstres = $map->map_start();
my $finishres = $map->map_finish();
my $recursive = 1;
if ($pbscope eq 'nonrec') {
$recursive = 0;
}
$iterator = $navmap->getIterator($firstres,$finishres,undef,$recursive);
} else {
$iterator = $navmap->getIterator(undef,undef,undef,1);
}
if (ref($iterator)) {
my $depth = 1;
my $total = 0;
my $possible = 0;
my (%totals_by_symb,%possibles_by_symb);
if (ref($totals) eq 'HASH') {
%totals_by_symb = %{$totals};
}
if (ref($possibles) eq 'HASH') {
%possibles_by_symb = %{$possibles};
}
$iterator->next(); # ignore first BEGIN_MAP
my $curRes = $iterator->next();
while ( $depth > 0 ) {
if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
if ($curRes == $iterator->END_MAP()) { $depth--; }
if (ref($curRes) && $curRes->is_gradable() && !$curRes->randomout) {
my $currsymb = $curRes->symb();
if (($currsymb) && (exists($totals_by_symb{$currsymb})) &&
(exists($possibles_by_symb{$currsymb}))) {
$total += $totals_by_symb{$currsymb};
$possible += $possibles_by_symb{$currsymb};
} else {
my $parts = $curRes->parts();
foreach my $part (@{$parts}) {
next if ($curRes->solved($part) eq 'excused');
$total += $curRes->weight($part) * $curRes->awarded($part);
$possible += $curRes->weight($part);
}
}
}
$curRes = $iterator->next();
}
if ($total > $possible) {
$total = $possible;
}
return ($total,$possible);
}
}
return;
}
1;
__END__
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