--- loncom/homework/lonhomework.pm 2015/09/14 13:45:19 1.357 +++ loncom/homework/lonhomework.pm 2015/10/05 02:35:40 1.358 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # The LON-CAPA Homework handler # -# $Id: lonhomework.pm,v 1.357 2015/09/14 13:45:19 raeburn Exp $ +# $Id: lonhomework.pm,v 1.358 2015/10/05 02:35:40 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -221,8 +221,39 @@ sub check_slot_access { 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,$datemsg); @@ -232,11 +263,14 @@ sub check_slot_access { } if ($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 $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb); @@ -246,10 +280,13 @@ sub check_slot_access { # 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 $slot"); @@ -260,12 +297,41 @@ sub check_slot_access { if ($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)) { @@ -273,7 +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 = @@ -282,11 +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_/); } @@ -305,7 +368,7 @@ 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) { @@ -343,14 +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); } @@ -358,11 +425,11 @@ 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