Annotation of loncom/interface/lonpdfupload.pm, revision 1.4
1.1 onken 1: # The LearningOnline Network with CAPA
2: # Publication Handler
3: #
1.4 ! onken 4: # $Id: lonpdfupload.pm,v 1.3 2009/04/04 21:47:41 bisitz Exp $
1.1 onken 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: package Apache::lonpdfupload;
29:
30: use lib '/home/httpd/lib/perl';
31: use Apache::Constants qw(:common :http);
32: use LONCAPA;
33: use LONCAPA::loncgi;
34: use File::Path;
35: use File::Basename;
36: use File::Copy;
37: use IO::File;
38: use Image::Magick;
39: use Apache::lonacc;
40: use Apache::lonxml;
41: use Apache::lonhtmlcommon();
42: use Apache::lonnet;
43: use Apache::loncommon();
44: use Apache::lonlocal;
45: use Apache::lonmsg();
46: use Apache::lonhomework;
47: use LONCAPA::Enrollment;
48: use LONCAPA::Configuration;
1.2 onken 49: use CAM::PDF;
1.1 onken 50:
51: use strict;
52:
53: sub handler() {
1.2 onken 54: my $r = shift;
55:
56: # check user permissions
57: if(!&checkpermission($r)) {
58: # stop processing
59: return OK;
60: }
61:
62: $Apache::lonxml::request=$r;
63: $Apache::lonxml::debug=$env{'user.debug'};
64:
65: $env{'request.uri'}=$r->uri;
66: $r->content_type('text/html');
67: $r->send_http_header();
68: $r->print(&Apache::loncommon::start_page('Upload-PDF-Form'));
69:
70: #load post data into environment
71: &Apache::lonacc::get_posted_cgi($r);
72:
73: # if a file was upload
74: if($env{'form.Uploaded'} && $env{'form.file'}) {
75: $r->print(&processPDF);
76: } else {
77: # print upload form
78: $r->print(&get_javascripts);
79: $r->print(&get_uploadform);
80: }
81:
82: #link to course-content
83: $r->print(" <br />\n <a href='/adm/navmaps'>\n ".&mt("Navigate Contents")."\n </a>\n <br />");
1.1 onken 84:
1.2 onken 85: #&dumpenv($r); #debug -> prints the environment
86: $r->print(" </body> \n</html>\n");
1.1 onken 87: return OK;
1.2 onken 88: }
1.1 onken 89:
90:
91: sub checkpermission() {
92: my $r = shift;
93: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
94: my $result = <<END
95: Content-type: text/html
96:
97: <html>
1.2 onken 98: <head>
99: <title>
100: Bad Cookie
101: </title>
102: </head>
103: <body>
104: Your cookie information is incorrect.
105: </body>
1.1 onken 106: </html>
107: END
108: ;
109: $r->print($result);
110: return 0;
111: } else {
112: return 1;
113: }
114: }
115:
116:
117: sub get_javascripts() {
1.2 onken 118:
119: my $message = &mt('Please choose a PDF-File');
1.1 onken 120:
1.2 onken 121: # simple test if the upload ends with ".pdf"
122: # it's only for giving a message to the user
123: my $result .= <<END
124: <script type="text/javascript">
1.1 onken 125: function checkFilename(form) {
126: var fileExt = form.file.value;
127: fileExt = fileExt.match(/[.]pdf\$/g);
128: if(fileExt) {
129: return true;
130: }
1.2 onken 131: alert("$message");
1.1 onken 132: return false;
133: }
1.2 onken 134: </script>
1.1 onken 135: END
136: ;
137: return $result;
138: }
139:
1.2 onken 140:
1.1 onken 141: sub get_uploadform() {
1.4 ! onken 142:
! 143: #TODO use LON-CAPA routines like pick_box or like that
! 144: my %lt = &Apache::lonlocal::texthash(
! 145: 'title'=>'Submit a PDF-Form with problems',
! 146: 'chFile' => 'Choose file:',
! 147: 'submit'=>'Submit'
! 148: );
! 149:
1.1 onken 150: my $result = <<END
151: <form method="post" enctype="multipart/form-data" onsubmit="return checkFilename(this);">
1.3 bisitz 152: <input type="hidden" name="type" value="upload" />
1.4 ! onken 153: <br />
! 154: <b>$lt{'title'}</b>
! 155: <table class="LC_pick_box">
! 156: <tbody>
! 157: <tr class="LC_pick_box_row">
! 158: <td class="LC_pick_box_title">
! 159: $lt{'chFile'}
! 160: </td>
! 161: <td class="LC_pick_box_value LC_odd_row">
! 162: <input type="file" name="file" id="filename" />
! 163: </td>
! 164: </tr>
! 165: </tbody>
! 166: </table>
! 167: <br />
! 168: <input type="submit" name="Uploaded" value="$lt{'submit'}" />
! 169: </form>
! 170: <br />
! 171: <hr />
1.1 onken 172: END
173: ;
174: return $result;
175: }
176:
177: sub processPDF {
1.2 onken 178: my $result = (); # message for Browser
179: my @pdfdata = (); # answers from PDF-Forms
1.1 onken 180:
1.2 onken 181: @pdfdata = &get_pdf_data(); # get answers from PDF-Form
1.1 onken 182:
183: if (scalar @pdfdata) {
1.2 onken 184: &grade_pdf(@pdfdata);
1.1 onken 185: } else {
1.2 onken 186: $result .= "<h2>".&mt("Can't find any valid PDF-formfields")."</h2>";
1.1 onken 187: }
188: }
189:
190: sub get_pdf_data() {
191: my @data = ();
1.2 onken 192: my $pdf = CAM::PDF->new($env{'form.file'});
193:
194: my @formFields = $pdf->getFormFieldList(); #get names of formfields
1.1 onken 195:
1.2 onken 196: foreach my $field (@formFields) {
197: my $dict = $pdf->getFormFieldDict($pdf->getFormField($field)); # get formfield dictonary
1.1 onken 198:
1.2 onken 199: #
200: # this is nessesary 'cause CAM::PDF has a problem with formfieldnames which include a
201: # dot in fieldnames. So a fieldname like "i.am.aFormfield" will offer three fieldnames "i", "i.am"
202: # and "i.am.aFormfield". The fragmentary names keep no values and will be ignored.
203: if($dict->{'V'}) {
204: push(@data, $field."?". $dict->{'V'}{'value'}); #binding fieldname with value
205: }
206: }
1.1 onken 207: return @data;
208: }
209:
210: sub grade_pdf {
211: my $result = ();
212: my @pdfdata = @_;
213:
214: my $meta = ();
215: my %grades = ();
216: my %problems = ();
217:
218: my $debug = ();
219:
220: $debug .= "Found: ". scalar @pdfdata." Entries \n";
1.4 ! onken 221: $result .= '<br />';
! 222: $result .= &Apache::loncommon::start_data_table();
! 223: $result .= &Apache::loncommon::start_data_table_header_row();
! 224: $result .= &mt('<b>Results of PDF-Form problems</b>');
! 225: $result .= &Apache::loncommon::end_data_table_header_row();
! 226:
1.1 onken 227: foreach my $entry (sort(@pdfdata)) {
228: if ($entry =~ /^meta.*/) {
1.2 onken 229: $debug .= 'found: metadata -> '.$entry . "<br />";
230: my ($label, $value) = ($entry =~ /^([^?]*)\?(.*)/);
1.1 onken 231: my ($domain, $user) = split('&', $value);
1.4 ! onken 232: $user =~ s/(.*)\n/$1/; #TODO is that equals to chomp?
1.1 onken 233:
234: if($user ne $env{'user.name'} or $domain ne $env{'user.domain'}) {
235: return "<pre>".&mt('Wrong username in PDF-File').": $user $domain -> $env{'user.domain'} $env{'user.name'} </pre>";
236: }
237:
238: } elsif($entry =~ /^upload.*/) {
239: $debug .= 'found: a problem -> '.$entry;
1.2 onken 240: my ($label, $value) = ($entry =~ /^([^?]*)\?(.*)/);
1.1 onken 241: my ($symb, $part, $type, $HWVAL) = split('&', $label);
242: my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symb);
243: $value =~ s/(.*)\n/$1/;
244:
245: #fehlerhafte Radiobuttons rausfiltern (Bug in CABAReT Stage)
246: if($type eq 'radiobuttonresponse' && $value eq 'Off' ) {
247: next;
248: }
249:
250: my $submit = $part;
251: $submit =~ s/part_(.*)/submit_$1/;
252: if($problems{$symb.$part}) {
253: $problems{$symb.$part}{$HWVAL} = $value;
254: } else {
255: $problems{$symb.$part} = { 'resource' => $resource,
1.4 ! onken 256: 'symb' => &Apache::lonenc::encrypted($symb),
1.1 onken 257: 'submitted' => $part,
258: $submit => 'Answer',
259: $HWVAL => $value};
260: }
261: } else {
262: $debug .= 'found: -> '.$entry;
263: next;
264: }
265: }
1.4 ! onken 266: #$result .= $debug;
1.1 onken 267:
268: foreach my $key (sort (keys %problems)) {
269: my %problem = %{$problems{$key}};
270: my ($problemname, $grade) = &grade_problem(%problem);
1.4 ! onken 271:
! 272: $problemname =~ s/(.*)\s*-\sPart\s0/$1/; #cut part when there is only one part in problem
! 273:
! 274: $result .= &Apache::loncommon::start_data_table_row();
! 275: $result .= "<td>$problemname</td><td class='";
1.1 onken 276: if($grade eq "EXACT_ANS") {
1.4 ! onken 277: $result .= "LC_answer_correct";
1.1 onken 278: } else {
1.4 ! onken 279: $result .= "LC_answer_charged_try";
1.1 onken 280: }
1.4 ! onken 281: $result .= "'>$grade</span></td>";
! 282: $result .= &Apache::loncommon::end_data_table_row();
! 283: }
! 284: #$result .= "\n</table>";
! 285: $result .= &Apache::loncommon::end_data_table();
1.1 onken 286:
287:
288: return $result;
289: }
290:
291: sub grade_problem {
292: my %problem = @_;
293:
294: my ($content) = &Apache::loncommon::ssi_with_retries('/res/'.
295: $problem{'resource'}, 5, %problem);
1.4 ! onken 296:
! 297: #TODO ? filter html response can't be the answer
! 298: # ! find an other way to get a problemname and Part
1.1 onken 299: $content =~ s/.*class="LC_current_location".*>(.*)<\/td>.*/$1/g;
300: $content = $1;
301:
302: my $part = $problem{submitted};
303: $part =~ s/part_(.*)/$1/;
304: $content .= " - Part $part";
305:
306: my %problemhash = &Apache::lonnet::restore($problem{'symb'});
307: my $grade = $problemhash{"resource.$part.award"};
308:
309: return ($content, $grade);
310: }
311:
312: sub dumpenv {
313: my $r = shift;
314:
315: $r->print ("<br />-------------------<br />");
316: foreach my $key (sort (keys %env)) {
317: $r->print ("<br />$key -> $env{$key}");
318: }
319: $r->print ("<br />-------------------<br />");
320: $r->print ("<br />-------------------<br />");
321: foreach my $key (sort (keys %ENV)) {
322: $r->print ("<br />$key -> $ENV{$key}");
323: }
324: $r->print ("<br />-------------------<br />");
325:
326: }
327:
328: 1;
329: __END__
330:
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