--- loncom/homework/lonhomework.pm 2015/04/14 21:35:56 1.349.2.2 +++ loncom/homework/lonhomework.pm 2016/05/13 22:48:09 1.361 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # The LON-CAPA Homework handler # -# $Id: lonhomework.pm,v 1.349.2.2 2015/04/14 21:35:56 musolffc Exp $ +# $Id: lonhomework.pm,v 1.361 2016/05/13 22:48:09 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -49,8 +49,10 @@ use Apache::matchresponse(); use Apache::chemresponse(); use Apache::functionplotresponse(); use Apache::drawimage(); +use Apache::loncapamath(); use Apache::Constants qw(:common); use Apache::loncommon(); +use Apache::lonparmset(); use Apache::lonlocal; use Time::HiRes qw( gettimeofday tv_interval ); use HTML::Entities(); @@ -208,19 +210,50 @@ sub proctor_checked_in { } sub check_slot_access { - my ($id,$type)=@_; + my ($id,$type,$symb)=@_; # does it pass normal muster - my ($status,$datemsg)=&check_access($id); + my ($status,$datemsg)=&check_access($id,$symb); - my $useslots = &Apache::lonnet::EXT("resource.0.useslots"); + my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb); if ($useslots ne 'resource' && $useslots ne 'map' && $useslots ne 'map_map') { return ($status,$datemsg); } - if ($status eq 'SHOW_ANSWER' || - $status eq 'CLOSED' || + 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); + $now = time; + $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'}; + + if ($checkedin) { + $checkinslot = $Apache::lonhomework::history{"$checkin.slot"}; + my %slot=&Apache::lonnet::get_slot($checkinslot); + if ($slot{'iptied'}) { + $ipused = $Apache::lonhomework::history{"$checkin.ip"}; + unless (($ip ne '') && ($ipused eq $ip)) { + $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,$datemsg); @@ -230,24 +263,30 @@ sub check_slot_access { } if ($type eq 'Task') { - my $version=$Apache::lonhomework::history{'resource.version'}; - if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} && + if ($checkedin && $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') { - return ('SHOW_ANSWER'); - } + if ($blockip eq 'answer') { + return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused); + } else { + return ('SHOW_ANSWER'); + } + } } - my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent"); - my $available = &Apache::lonnet::EXT("resource.0.available"); + 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 $slotstatus='NOT_IN_A_SLOT'; - my ($returned_slot,$slot_name); - my $now = time; my $num_usable_slots = 0; + if (!$symb) { + ($symb) = &Apache::lonnet::whichuser(); + } foreach my $slot (@slots) { $slot =~ s/(^\s*|\s*$)//g; &Apache::lonxml::debug("getting $slot"); @@ -258,12 +297,41 @@ sub check_slot_access { if ($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 ($slot{'iptied'}) { + if ($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)) { @@ -271,7 +339,7 @@ sub check_slot_access { $slotstatus=$status; } - my ($is_correct,$got_grade,$checkedin); + my ($is_correct,$got_grade); if ($type eq 'Task') { my $version=$Apache::lonhomework::history{'resource.0.version'}; $got_grade = @@ -280,11 +348,8 @@ sub check_slot_access { $is_correct = ($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_/); } @@ -303,14 +368,16 @@ sub check_slot_access { # 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. + # (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 ($symb)=&Apache::lonnet::whichuser(); + unless ($symb) { + ($symb)=&Apache::lonnet::whichuser(); + } $slotstatus = 'NOTRESERVABLE'; my ($reservable_now_order,$reservable_now,$reservable_future_order, $reservable_future) = @@ -339,14 +406,18 @@ sub check_slot_access { && $checkedin ) { if ($got_grade) { - return ('SHOW_ANSWER'); + if ($blockip eq 'answer') { + return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused); + } else { + return ('SHOW_ANSWER'); + } } else { return ('WAITING_FOR_GRADE'); } } - if ( $is_correct) { + if (($is_correct) && ($blockip ne 'answer')) { if ($type eq 'problem') { return ($status); } @@ -354,17 +425,17 @@ sub check_slot_access { } if ( $status eq 'CANNOT_ANSWER' && - ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) { + ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT' && + $slotstatus ne 'NEED_DIFFERENT_IP') ) { return ($status,$datemsg); } - - return ($slotstatus,$datemsg,$slot_name,$returned_slot); + return ($slotstatus,$datemsg,$slot_name,$returned_slot,$ipused); } # JB, 9/24/2002: Any changes in this function may require a change # in lonnavmaps::resource::getDateStatus. sub check_access { - my ($id) = @_; + my ($id,$symb) = @_; my $date =''; my $status; my $datemsg = ''; @@ -394,11 +465,13 @@ sub check_access { &Apache::lonxml::debug("checking for part :$id:"); &Apache::lonxml::debug("time:".time); - my ($symb)=&Apache::lonnet::whichuser(); + unless ($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"); + 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'; @@ -414,12 +487,12 @@ sub check_access { foreach my $temp ("opendate","duedate","answerdate") { $lastdate = $date; if ($temp eq 'duedate') { - $date = &due_date($id); + $date = &due_date($id,$symb); } else { - $date = &Apache::lonnet::EXT("resource.$id.$temp"); + $date = &Apache::lonnet::EXT("resource.$id.$temp",$symb); } - my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type"); + my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb); if ($thistype =~ /^(con_lost|no_such_host)/ || $date =~ /^(con_lost|no_such_host)/) { $status='UNAVAILABLE'; @@ -428,10 +501,10 @@ sub check_access { } if ($thistype eq 'date_interval') { if ($temp eq 'opendate') { - $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date; + $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date; } if ($temp eq 'answerdate') { - $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date; + $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date; } } &Apache::lonxml::debug("found :$date: for :$temp:"); @@ -465,7 +538,7 @@ sub check_access { (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) { #check #tries, and if correct. my $tries = $Apache::lonhomework::history{"resource.$id.tries"}; - my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries"); + my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb); if ( $tries eq '' ) { $tries = '0'; } if ( $maxtries eq '' && $env{'request.state'} ne 'construct') { $maxtries = '2'; } @@ -474,7 +547,7 @@ sub check_access { if ( ($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$/i)) { + (&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) { $status = 'CANNOT_ANSWER'; } } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) { @@ -486,14 +559,14 @@ sub check_access { } } if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') { - my @interval=&Apache::lonnet::EXT("resource.$id.interval"); + my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb); &Apache::lonxml::debug("looking for interval @interval"); if ($interval[0]) { - my $first_access=&Apache::lonnet::get_first_access($interval[1]); + 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); + my $due_date = &due_date($id,$symb); my $seconds_left = $due_date - time; if ($seconds_left > $interval[0] || $due_date eq '') { $seconds_left = $interval[0]; @@ -1014,68 +1087,83 @@ sub editxmlmode { &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index'). '
'.&Apache::lonxml::message_location(). - &Apache::loncommon::xmleditor_js(). - ' -