# The LearningOnline Network with CAPA # Publication Handler # # $Id: lonpdfupload.pm,v 1.9 2009/05/21 05:57:50 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::lonpdfupload; use lib '/home/httpd/lib/perl'; use Apache::Constants qw(:common :http); use LONCAPA; use LONCAPA::loncgi; use File::Path; use File::Basename; use File::Copy; use IO::File; use Image::Magick; use Apache::lonacc; use Apache::lonxml; use Apache::lonhtmlcommon(); use Apache::lonnet; use Apache::loncommon(); use Apache::lonlocal; use Apache::lonmsg(); use Apache::lonhomework; use LONCAPA::Enrollment; use LONCAPA::Configuration; use CAM::PDF; use strict; sub handler() { my $r = shift; # check user permissions if(!&checkpermission($r)) { # stop processing return OK; } $Apache::lonxml::request=$r; $Apache::lonxml::debug=$env{'user.debug'}; $env{'request.uri'}=$r->uri; $r->content_type('text/html'); $r->send_http_header(); $r->print(&Apache::loncommon::start_page('Upload PDF Form')); #load post data into environment &Apache::lonacc::get_posted_cgi($r); # if a file was upload if($env{'form.Uploaded'} && $env{'form.file'}) { $r->print(&processPDF); } else { # print upload form $r->print(&get_javascripts); $r->print(&get_uploadform); } #link to course-content $r->print('
' .'

'."\n" .''."\n" .&mt("Navigate Contents")."\n" .''."\n" .'

'."\n" ); #&dumpenv($r); #debug -> prints the environment $r->print(&Apache::loncommon::end_page()); return OK; } sub checkpermission() { my $r = shift; if (! &LONCAPA::loncgi::check_cookie_and_load_env()) { my $result = < Bad Cookie Your cookie information is incorrect. END ; $r->print($result); return 0; } else { return 1; } } sub get_javascripts() { my $message = &mt('Please choose a PDF-File.'); # simple test if the upload ends with ".pdf" # it's only for giving a message to the user my $result .= < function checkFilename(form) { var fileExt = form.file.value; fileExt = fileExt.match(/[.]pdf\$/g); if(fileExt) { return true; } alert("$message"); return false; } END ; return $result; } sub get_uploadform() { my %lt = &Apache::lonlocal::texthash( 'title' => 'Upload a PDF Form with filled Form Fields', 'chFile' => 'File', 'submit' => 'Upload', ); my $result = '
' .'
' .'' .&Apache::lonhtmlcommon::start_pick_box() .&Apache::lonhtmlcommon::row_headline() .'

'.$lt{'title'}.'

' .&Apache::lonhtmlcommon::row_closure() .&Apache::lonhtmlcommon::row_title($lt{'chFile'}) .'' .&Apache::lonhtmlcommon::row_closure(1) .&Apache::lonhtmlcommon::end_pick_box() .'' .'
' .'
'; return $result; } sub processPDF { my $result = (); # message for Browser my @pdfdata = (); # answers from PDF-Forms @pdfdata = &get_pdf_data(); # get answers from PDF-Form if (scalar @pdfdata) { &grade_pdf(@pdfdata); } else { $result .= '

' .&mt("Can't find any valid PDF formfields.") .'

'; } } sub get_pdf_data() { my @data = (); my $pdf = CAM::PDF->new($env{'form.file'}); my @formFields = $pdf->getFormFieldList(); #get names of formfields foreach my $field (@formFields) { my $dict = $pdf->getFormFieldDict($pdf->getFormField($field)); # get formfield dictonary # # this is nessesary 'cause CAM::PDF has a problem with formfieldnames which include a # dot in fieldnames. So a fieldname like "i.am.aFormfield" will offer three fieldnames "i", "i.am" # and "i.am.aFormfield". The fragmentary names keep no values and will be ignored. if($dict->{'V'}) { push(@data, $field."?". $dict->{'V'}{'value'}); #binding fieldname with value } } return @data; } sub grade_pdf { my $result = (); my @pdfdata = @_; my $meta = (); my %grades = (); my %problems = (); my $debug = (); $debug .= "Found: ". scalar @pdfdata." Entries \n"; $result .= '

'.&mt('Results of PDF Form problems').'

'; $result .= &Apache::loncommon::start_data_table() .&Apache::loncommon::start_data_table_header_row() .''.&mt('Problem Name').'' .''.&mt('Grading').'' .&Apache::loncommon::start_data_table_header_row() .&Apache::loncommon::end_data_table_header_row(); foreach my $entry (sort(@pdfdata)) { if ($entry =~ /^meta.*/) { $debug .= 'found: metadata -> '.$entry . "
"; my ($label, $value) = ($entry =~ /^([^?]*)\?(.*)/); my ($domain, $user) = split('&', $value); $user =~ s/(.*)\n/$1/; #TODO is that equals to chomp? if($user ne $env{'user.name'} or $domain ne $env{'user.domain'}) { return "
".&mt('Wrong username in PDF-File').": $user $domain -> $env{'user.domain'} $env{'user.name'}
"; } } elsif($entry =~ /^upload.*/) { $debug .= 'found: a problem -> '.$entry; my ($label, $value) = ($entry =~ /^([^?]*)\?(.*)/); my ($symb, $part, $type, $HWVAL) = split('&', $label); my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symb); $value =~ s/(.*)\n/$1/; #filter incorrect radiobuttons (Bug in CABAReT Stage) if($type eq 'radiobuttonresponse' && $value eq 'Off' ) { next; } my $submit = $part; $submit =~ s/part_(.*)/submit_$1/; if($problems{$symb.$part}) { $problems{$symb.$part}{$HWVAL} = $value; } else { $problems{$symb.$part} = { 'resource' => $resource, 'symb' => &Apache::lonenc::encrypted($symb), 'submitted' => $part, $submit => 'Answer', $HWVAL => $value}; } } else { $debug .= 'found: -> '.$entry; next; } } #$result .= $debug; foreach my $key (sort (keys %problems)) { my %problem = %{$problems{$key}}; my ($problemname, $grade) = &grade_problem(%problem); $result .= &Apache::loncommon::start_data_table_row(); $result .= "$problemname$grade"; $result .= &Apache::loncommon::end_data_table_row(); } $result .= &Apache::loncommon::end_data_table(); return $result; } sub grade_problem { my %problem = @_; my ($title, $part) = (); &Apache::loncommon::ssi_with_retries('/res/'.$problem{'resource'}, 5, %problem); $title = &Apache::lonnet::gettitle($problem{'symb'}); $part = $problem{submitted}; $part =~ s/part_(.*)/$1/; unless($part eq '0') { #add information about part number $title .= " - Part $part"; } my %problemhash = &Apache::lonnet::restore($problem{'symb'}); my $grade = $problemhash{"resource.$part.award"}; return ($title, $grade); } sub parse_grade_answer { my ($shortcut) = @_; my %answerhash = ('EXACT_ANS' => &mt('You are correct.'), 'APPROX_ANS' => &mt('You are approximated right'), 'INCORRECT' => &mt('You are incorrect'), ); foreach my $key (keys %answerhash) { if($shortcut eq $key) { return $answerhash{$shortcut}; } } return &mt('See course contents for further information.'); } sub dumpenv { my $r = shift; $r->print ("
-------------------
"); foreach my $key (sort (keys %env)) { $r->print ("
$key -> $env{$key}"); } $r->print ("
-------------------
"); $r->print ("
-------------------
"); foreach my $key (sort (keys %ENV)) { $r->print ("
$key -> $ENV{$key}"); } $r->print ("
-------------------
"); } 1; __END__