--- loncom/homework/lonhomework.pm 2002/01/03 22:16:53 1.68 +++ loncom/homework/lonhomework.pm 2014/08/07 19:53:19 1.345 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # The LON-CAPA Homework handler # -# $Id: lonhomework.pm,v 1.68 2002/01/03 22:16:53 albertel Exp $ +# $Id: lonhomework.pm,v 1.345 2014/08/07 19:53:19 musolffc Exp $ # # Copyright Michigan State University Board of Trustees # @@ -24,452 +24,1312 @@ # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ -# -# Guy Albertelli -# 11/30 Gerd Kortemeyer -# 6/1,8/17,8/18 Gerd Kortemeyer + package Apache::lonhomework; use strict; -use Apache::style; -use Apache::lonxml; +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::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::Constants qw(:common); -#use Time::HiRes qw( gettimeofday tv_interval ); +use Apache::loncommon(); +use Apache::lonlocal; +use Time::HiRes qw( gettimeofday tv_interval ); +use HTML::Entities(); +use File::Copy(); + +# FIXME - improve commenting + -sub BEGIN { - &Apache::lonxml::register_insert(); +BEGIN { + &Apache::lonxml::register_insert(); } -sub get_target { - if ( $ENV{'request.state'} eq "published") { - if ( defined($ENV{'form.grade_target'}) - && ($Apache::lonhomework::viewgrades == 'F' )) { - return ($ENV{'form.grade_target'}); + +=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"}; } - if ( defined($ENV{'form.submitted'})) { - return ('grade', 'web'); +} + +# +# 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= $env{'form.grade_target'}"); } else { - return ('web'); + &Apache::lonxml::debug("form.grade_target "); } - } elsif ($ENV{'request.state'} eq "construct") { - if ( defined($ENV{'form.preview'})) { - if ( defined($ENV{'form.submitted'})) { - return ('grade', 'web'); - } else { - return ('web'); - } - } else { - if ( $ENV{'form.problemmode'} eq 'View' ) { - if ( defined($ENV{'form.submitted'}) && - (!defined($ENV{'form.resetdata'})) ) { - return ('grade', 'web','answer'); - } else { - return ('web','answer'); + if (($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'); } - } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) { - if ( $ENV{'form.submitted'} eq 'edit' ) { - return ('modified','edit'); + if ( defined($env{'form.submitted'}) && + ( !defined($env{'form.newrandomization'}))) { + return ('grade', 'web'); } else { - return ('edit'); + return ('web'); } - } else { - return ('web'); - } + } elsif ($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')) { + return ('modified','no_output_web','edit'); + } elsif ($env{'form.problemmode'} eq 'edit') { + return ('no_output_web','edit'); + } else { + return ('web'); + } + } +# +# End of Authoring Space +# } - } - return (); +# +# Huh? We are nowhere, so do nothing. +# + return (); } sub setup_vars { - my ($target) = @_; - return ';' + my ($target) = @_; + return ';' # return ';$external::target='.$target.';'; } -sub send_header { - my ($request)= @_; - $request->print(&Apache::lontexconvert::header()); -# $request->print('
'); +sub proctor_checked_in { + my ($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') { + $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 $slot_name) { + return 1; + } + } + + return 0; } -sub createmenu { - my ($which,$request)=@_; - if ($which eq 'grade') { - $request->print(''); - } -} +sub check_slot_access { + my ($id,$type)=@_; -sub send_footer { - my ($request)= @_; -# $request->print('
'); - $request->print(&Apache::lontexconvert::footer()); -} + # does it pass normal muster + my ($status,$datemsg)=&check_access($id); + + my $useslots = &Apache::lonnet::EXT("resource.0.useslots"); + if ($useslots ne 'resource' && $useslots ne 'map' + && $useslots ne 'map_map') { + return ($status,$datemsg); + } + + if ($status eq 'SHOW_ANSWER' || + $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') { + my $version=$Apache::lonhomework::history{'resource.version'}; + if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} && + $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') { + return ('SHOW_ANSWER'); + } + } -$Apache::lonxml::browse=''; + my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent"); + my $available = &Apache::lonnet::EXT("resource.0.available"); + my @slots= (split(':',$availablestudent),split(':',$available)); + +# if (!@slots) { +# return ($status,$datemsg); +# } + my $slotstatus='NOT_IN_A_SLOT'; + my ($returned_slot,$slot_name); + my $now = time; + my $num_usable_slots = 0; + 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'})) { + &Apache::lonxml::debug("$slot is good"); + $slotstatus='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,$checkedin); + if ($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_/ ); + $checkedin = + $Apache::lonhomework::history{"resource.$version.0.checkedin"}; + } elsif ($type eq 'problem') { + $got_grade = 1; + $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"}; + $is_correct = + ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/); + } + + &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) && $type eq 'problem') { + if ($slotstatus eq 'NOT_IN_A_SLOT') { + if (!$num_usable_slots) { + if ($env{'request.course.id'}) { + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my ($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) { + $slotstatus = 'RESERVABLE'; + $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'}; + } + } + unless ($slotstatus eq 'RESERVABLE') { + if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) { + if (@{$reservable_future_order} > 0) { + $slotstatus = 'RESERVABLE_LATER'; + $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'}; + } + } + } + } + } + } + return ($slotstatus,$datemsg); + } + + if ($slotstatus eq 'NOT_IN_A_SLOT' + && $checkedin ) { + + if ($got_grade) { + return ('SHOW_ANSWER'); + } else { + return ('WAITING_FOR_GRADE'); + } + + } + + if ( $is_correct) { + if ($type eq 'problem') { + return ($status); + } + return ('SHOW_ANSWER'); + } + + if ( $status eq 'CANNOT_ANSWER' && + ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) { + return ($status,$datemsg); + } + + return ($slotstatus,$datemsg,$slot_name,$returned_slot); +} + +# JB, 9/24/2002: Any changes in this function may require a change +# in lonnavmaps::resource::getDateStatus. sub check_access { - my ($id) = @_; - my $date =''; - my $status = ''; - my $datemsg = ''; - my $lastdate = ''; - my $temp; - my $type; - my $passed; - &Apache::lonxml::debug("checking for part :$id:"); - foreach $temp ("opendate","duedate","answerdate") { - $lastdate = $date; - $date = &Apache::lonnet::EXT("resource.$id.$temp"); - &Apache::lonxml::debug("found :$date: for :$temp:"); - if ($date eq '') { - $date = "an unknown date"; $passed = 0; - } elsif ($date eq 'con_lost') { - $date = "an indeterminate date"; $passed = 0; + my ($id) = @_; + 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); + + my ($symb)=&Apache::lonnet::whichuser(); + &Apache::lonxml::debug("symb:".$symb); + #if ($env{'request.state'} ne "construct" && $symb ne '') { + if ($env{'request.state'} ne "construct") { + my $idacc = &Apache::lonnet::EXT("resource.$id.acc"); + 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); + } else { + $date = &Apache::lonnet::EXT("resource.$id.$temp"); + } + + my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type"); + if ($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")-$date; + } + if ($temp eq 'answerdate') { + $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date; + } + } + &Apache::lonxml::debug("found :$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"); + if ( $tries eq '' ) { $tries = '0'; } + if ( $maxtries eq '' && + $env{'request.state'} ne 'construct') { $maxtries = '2'; } + $Apache::lonhomework::results{'resource.'.$id.'.maxtries'}=$maxtries; + if ($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") !~/^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"); + &Apache::lonxml::debug("looking for interval @interval"); + if ($interval[0]) { + my $first_access=&Apache::lonnet::get_first_access($interval[1]); + &Apache::lonxml::debug("looking for accesstime $first_access"); + if (!$first_access) { + $status='NOT_YET_VIEWED'; + my $due_date = &due_date($id); + my $seconds_left = $due_date - time; + if ($seconds_left > $interval[0] || $due_date eq '') { + $seconds_left = $interval[0]; + } + $datemsg=&seconds_to_human_length($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 $interval = $first_access+$interval[0]; + $date = (!$due_date || $interval < $due_date) ? $interval + : $due_date; + } else { + $date = $due_date; + } } else { - if (time < $date) { $passed = 0; } else { $passed = 1; } - $date = localtime $date; + $date = $due_date; } - if (!$passed) { $type=$temp; last; } - } - &Apache::lonxml::debug("have :$type:$passed:"); - if ($passed) { - $status='SHOW_ANSWER'; - $datemsg=$date; - } elsif ($type eq 'opendate') { - $status='CLOSED'; - $datemsg = "will open on $date"; - } elsif ($type eq 'duedate') { - $status='CAN_ANSWER'; - $datemsg = "is due at $date"; - } elsif ($type eq 'answerdate') { - $status='CLOSED'; - $datemsg = "was due on $lastdate, and answers will be available on $date"; - } - if ($status eq 'CAN_ANSWER') { - #check #tries - my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; - my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); - if ( $tries eq '' ) { $tries = '0'; } - if ( $maxtries eq '' ) { $maxtries = '2'; } - if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; } - } - - if (($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'; - $datemsg='is closed but you are allowed to view it'; - } - if ($ENV{'request.state'} eq "construct") { - &Apache::lonxml::debug("in construction ignoring dates"); - $status='CAN_ANSWER'; - $datemsg='is in under construction'; - } - return ($status,$datemsg); + 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) = @_; - my $resultkey; - foreach $resultkey (sort keys %hash) { - &Apache::lonxml::debug("$resultkey ---- $hash{$resultkey}"); - } - &Apache::lonxml::debug("\n
restored values^
\n"); - return ''; + 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
"; + $string.= &showhashsubset($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
restored values^
\n"); + return ''; } sub setuppermissions { - $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); - $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); - return '' + $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$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'}); + } + $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'}); + } + $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::viewgrades); + undef($Apache::lonhomework::browse); } sub setupheader { - my $request=$_[0]; - if ($ENV{'browser.mathml'}) { - $request->content_type('text/xml'); - } else { - $request->content_type('text/html'); - } - if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) { - &Apache::loncommon::no_cache($request); - } - $request->send_http_header; - return OK if $request->header_only; - return '' + 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) = @_; - my $fileout = &Apache::lonnet::filelocation("",$request->uri); - my $filesave=$fileout.".bak"; - my $error=0; - - if ($ENV{'form.Undo'} eq 'undo') { - if (copy($filesave,$fileout)) { - $request->print("Undid changes, Copied $filesave to $fileout
"); - } else { - $request->print("Unable to undo, unable to copy $filesave to $fileout
"); - $error=1; - } - } else { - my $fs=Apache::File->new(">$filesave"); - if (defined($fs)) { - print $fs $$problem; - $request->print("Making Backup to $filesave
"); - } else { - $request->print("Unable to make backup $filesave"); - $error=2; - } - my $fh=Apache::File->new(">$fileout"); - if (defined($fh)) { - print $fh $$result; - $request->print("Saving Modifications to $fileout
"); + my ($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("

". + &mt("Undid changes, Switched [_1] and [_2]", + ''.$filebak. + '', + ''.$file. + '')."

"); + } else { + &Apache::lonxml::info("

". + &mt("Unable to undo, unable to switch [_1] and [_2]", + ''. + $filebak.'', + ''. + $file.'')."

"); + $error=1; + } } else { - $request->print("Unable to write to $fileout"); - $error|=4; + &Apache::lonnet::correct_line_ends($result); + + my $fs=Apache::File->new(">$filebak"); + if (defined($fs)) { + print $fs $$problem; + } else { + &Apache::lonxml::info("". + &mt("Unable to make backup [_1]", + ''. + $filebak.'').""); + $error=2; + } + my $fh=Apache::File->new(">$file"); + if (defined($fh)) { + print $fh $$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 + $$getobjref = "

".&mt("Reference Warning")."

". + "

".&mt("Completed upload of the file. This file contained references to other files.")."

". + "

".&mt("Please select the locations from which the referenced files are to be uploaded.")."

". + &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase, + {'error_on_invalid_names' => 1, + 'ignore_remote_references' => 1,}); + } + } + } + } else { + &Apache::lonxml::info(''. + &mt("Unable to write to [_1]", + ''. + $file.''). + ''); + $error|=4; + } } - } - return $error; + return $error; } -sub editxmlmode { - my ($request,$file) = @_; - my $result; - my $problem=&Apache::lonnet::getfile($file); - if ($problem == -1) { - &Apache::lonxml::error(" Unable to find $file"); - $problem=''; - } - if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) { - my $error=&handle_save_or_undo($request,\$problem, - \$ENV{'form.editxmltext'}); - if (!$error) { $problem=&Apache::lonnet::getfile($file); } - } - my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem); - if ($cols > 80) { $cols = 80; } - $result.=' -
- - - +sub analyze_header { + my ($request) = @_; + my $js = &Apache::structuretags::setmode_javascript(); + + # Breadcrumbs + my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri), + 'text' => 'Authoring Space'}, + {'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()); + $result .= + &Apache::lonxml::message_location().' + '. + ''. + &Apache::structuretags::remember_problem_state().' +
+ +
- - +
- - '; - $request->print($result); - return ''; +
+ '; + &Apache::lonxml::add_messages(\$result); + $request->print($result); + $request->rflush(); } -sub renderpage { - my ($request,$file) = @_; +sub analyze_footer { + my ($request) = @_; + $request->print(&Apache::loncommon::end_page()); + $request->rflush(); +} - my (@targets) = &get_target(); - foreach my $target (@targets) { - #my $t0 = [&gettimeofday()]; - my $problem=&Apache::lonnet::getfile($file); - if ($problem == -1) { - &Apache::lonxml::error(" Unable to find $file"); - $problem=''; +sub analyze { + my ($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 = [''.&mt('Error').'']; + } + $seedexample{join("\0",$part,$i,@{$answer_part})}= + $thisseed; + $i++; + } + } + if (!keys(%{ $analyze{$part.'.answer'} })) { + my $answer_part = + [''.&mt('Error').'']; + $seedexample{join("\0",$part,0,@{$answer_part})}= + $thisseed; + push( @{ $overall{$part.'.answer'}[0] }, + $answer_part); + } + } + } } - - my %mystyle; - my $result = ''; - &Apache::inputtags::initialize_inputtags; - &Apache::edit::initialize_edit; - if ($target eq 'web') { - if (&Apache::lonnet::symbread() eq '') { - if ($ENV{'request.state'} eq "construct") { + &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results')); + $request->print('
' + .'

' + .&mt('List of possible answers') + .'

' + ); + foreach my $part (sort(keys(%allparts))) { + if ((ref($overall{$part.'.answer'}) eq 'ARRAY') && + (@{$overall{$part.'.answer'}} > 0)) { + for (my $i=0;$iprint(&Apache::loncommon::start_data_table() + .&Apache::loncommon::start_data_table_header_row() + .'' + .&mt('Part').' '.$part + ); + if (scalar(@{ $overall{$part.'.answer'} }) > 1) { + $request->print(' '.&mt('Answer [_1]',$i+1)); + } + $request->print('' + .&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() + .''.&mt('Answer').'' + .''.&mt('Frequency').'
' + .'('.&mt('click for example').')' + .&Apache::loncommon::end_data_table_header_row() + ); + foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) { + $request->print(&Apache::loncommon::start_data_table_row() + .'' + .join('',split("\0",$answer)) + .'' + .'' + .''.$frequency{$answer}.'' + .'' + .&Apache::loncommon::end_data_table_row() + ); + } + $request->print(&Apache::loncommon::end_data_table()); + } } else { - $request->print("Browsing or ambiguous reference, submissions ignored
"); + $request->print('

' + .&mt('Response [_1] is not analyzable at this time.',$part) + .'

' + ); } - } - #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); } } - #if ($target eq 'grade') { &showhash(%Apache::lonhomework::history); } + if (scalar(keys(%allparts)) == 0 ) { + $request->print('

' + .&mt('Found no analyzable responses in this problem.' + .' Currently only Numerical, Formula and String response styles are supported.') + .'

' + ); + } + &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'); + } - my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm'); - if ($default == -1) { - &Apache::lonxml::error("Unable to find default_homework.lcpm"); - $default=''; + sub show_no_problem_status { + return ($show_problem_status eq 'no_feedback_ever'); + } + + sub show_answer_problem_status { + return ($show_problem_status eq 'answer'); } - $result = &Apache::lonxml::xmlparse($target, $problem, - $default.&setup_vars($target),%mystyle); +} - #$request->print("Result follows:"); - if ($target eq 'modified') { - &handle_save_or_undo($request,\$problem,\$result); +sub editxmlmode { + my ($request,$file) = @_; + my $result; + my $problem=&Apache::lonnet::getfile($file); + if ($problem eq -1) { + &Apache::lonxml::error( + '

' + .&mt('Unable to find [_1]', + ''.$file.'') + .'

'); + + $problem=''; + } + + if (($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 $td=&tv_interval($t0); - #if ( $Apache::lonxml::debug) { - #$result =~ s:::; - #$result.="
Spent $td seconds processing target $target\n"; - #} - $request->print($result); + 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::structuretags::setmode_javascript(). + &Apache::lonhtmlcommon::dragmath_js("EditMathPopup"); + + # Breadcrumbs + my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri), + 'text' => 'Authoring Space'}, + {'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). + '
'. + &Apache::structuretags::remember_problem_state().' +
+ +
+

'.&mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').'

+ 		+ '.&Apache::loncommon::helpLatexCheatsheet('Problem_LON-CAPA_Functions','Script Functions').' +
'; + + $result.=''. + &Apache::structuretags::problem_edit_buttons('editxml'); + + $result.='
'.&Apache::lonxml::message_location().'
'. + ' +
+
+
'.&Apache::loncommon::end_page(); + &Apache::lonxml::add_messages(\$result); + $request->print($result); } - #$request->print(":Result ends"); - #my $td=&tv_interval($t0); - } + return ''; } -# with no arg it returns a HTML "; + return $overall_result; + } +} + +sub finished_parsing { + undef($Apache::lonhomework::parsing_a_problem); + undef($Apache::lonhomework::parsing_a_task); +} + +sub get_template_list { + my ($extension) = @_; + my $result; + my @allnames; + &Apache::lonxml::debug("Looking for :$extension:"); + my $glob_extension = $extension; + if ($extension eq 'survey' || $extension eq 'exam') { + $glob_extension = 'problem'; + } + my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}. + '/templates/*.'.$glob_extension); + @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')), + (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')), + &Apache::lonnet::metadata($_, 'help')]} (@files); + @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files); + 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 = '
'; + $midpoint = int($numfiles/2); + if ($numfiles%2) { + $midpoint ++; + } } - } - return $result; + 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 .= '
'."\n".'
'."\n"; + $seconddiv = 1; + } elsif (!$first) { + $result.='
'."\n"; + } else { + $first = 0; + } + $result.= '
'."\n" + .'

'.$currentcategory.'

'."\n"; + $count++; + } + $result .= + ''; + if ($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 .= ' ' + .&Apache::loncommon::modal_link( + $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample') + .''; + } + $result .= '
'."\n"; + $count ++; + } + if ($numfiles > 0) { + $result .= '
'."\n".'
'."\n"; + } + return $result; } sub newproblem { my ($request) = @_; - my $extension=$request->uri; - $extension=~s:^.*\.([\w]+)$:$1:; - &Apache::lonxml::debug("Looking for :$extension:"); - if ($ENV{'form.template'}) { - use File::Copy; - my $file = &get_template_list($ENV{'form.template'},$extension); + + if ($env{'form.template'}) { + my $file = $env{'form.template'}; my $dest = &Apache::lonnet::filelocation("",$request->uri); - copy($file,$dest); + &File::Copy::copy($file,$dest); &renderpage($request,$dest); - } elsif($ENV{'form.newfile'}) { - # I don't like hard-coded filenames but for now, this will work. - use File::Copy; - my $templatefilename = - $request->dir_config('lonIncludes').'/templates/blank.problem'; + return; + } + + my ($extension) = ($request->uri =~ m/\.(\w+)$/); + &Apache::lonxml::debug("Looking for :$extension:"); + my $templatelist=&get_template_list($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); - copy($templatefilename,$dest); + &File::Copy::copy($templatefilename,$dest); &renderpage($request,$dest); - }else { - my $templatelist=&get_template_list('',$extension); - my $url=$request->uri; + } else { + my $url=&HTML::Entities::encode($request->uri,'<>&"'); my $dest = &Apache::lonnet::filelocation("",$request->uri); - if (!defined($templatelist)) { - # We didn't find a template, so just create a blank problem. - $request->print(< -The requested file $url doesn\'t exist. You can create a new $extension
-
-
-
- -ENDNEWPROBLEM - return ''; - } - $request->print(< -The requested file $url doesn\'t exist. You can create a new $extension
-
-
- -
- -ENDNEWPROBLEM + my $errormsg; + my $instructions; + my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri), + 'text' => 'Authoring Space'}, + {'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()) + .'

'.&mt("Creating a new $extension resource.")."

+$errormsg +".&mt("The requested file [_1] currently does not exist.", + ''.$url.'').' +

+'.&mt("To create a new $extension, select a template from the". + " list below. Then click on the \"Create $extension\" button.").' +

'); + + if (defined($templatelist)) { + $request->print($templatelist); + } + $request->print('
'); + $request->print('
'.&Apache::loncommon::end_page()); } - return ''; + return; } -sub view_or_edit_menu { - my ($request) = @_; - my $url=$request->uri; - $request->print(< -
-Would you like to or - the problem. -
- -EDITMENU +sub update_construct_style { + if ($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'}}); + } + } } -sub handler { - #my $t0 = [&gettimeofday()]; - my $request=$_[0]; - - if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} - if (&setupheader($request)) { return OK; } - $ENV{'request.uri'}=$request->uri; - - #setup permissions - $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'}); - $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}); - &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:"); - &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'}); - my $file=&Apache::lonnet::filelocation("",$request->uri); - - #check if we know where we are - if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { - # if we are browsing we might not be able to know where we are - if ($Apache::lonhomework::browse ne 'F') { - #should know where we are, so ask - $request->internal_redirect('/adm/ambiguous'); return; - } - } - - if ($ENV{'request.state'} eq "construct") { - if ($ENV{'form.resetdata'} eq 'Reset Submissions') { - my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser(); - &Apache::lonnet::tmpreset($symb,'',$domain,$name); - } - if ( -e $file ) { - if (!(defined $ENV{'form.problemmode'})) { - #first visit to problem in construction space - #&view_or_edit_menu($request); - $ENV{'form.problemmode'}='View'; - &renderpage($request,$file); - } elsif ($ENV{'form.problemmode'} eq 'EditXML') { - &editxmlmode($request,$file); - } else { - &renderpage($request,$file); - } +sub handler { + #my $t0 = [&gettimeofday()]; + my $request=$_[0]; + $Apache::lonxml::request=$request; + $Apache::lonxml::debug=$env{'user.debug'}; + $env{'request.uri'}=$request->uri; + &setuppermissions(); + + my $file=&Apache::lonnet::filelocation("",$request->uri); + + #check if we know where we are + if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) { + # if we are browsing we might not be able to know where we are + if ($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') || + ($env{'form.problemmode'} eq 'undoxml')) { + &editxmlmode($request,$file); + } elsif ($env{'form.problemmode'} eq 'calcanswers') { + &analyze($request,$file); + } else { + &update_construct_style(); + &renderpage($request,$file); + } + } else { + # requested file doesn't exist in contruction space + &newproblem($request); + } } else { - # requested file doesn't exist in contruction space - &newproblem($request); + # just render the page normally outside of construction space + &Apache::lonxml::debug("not construct"); + &renderpage($request,$file); } - } else { - # just render the page normally outside of construction space - &renderpage($request,$file); - } - #my $td=&tv_interval($t0); - #&Apache::lonxml::debug("Spent $td seconds processing"); - # &Apache::lonhomework::send_footer($request); - # always turn off debug messages - $Apache::lonxml::debug=0; - return OK; + #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; } 500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.