Annotation of loncom/publisher/lonupload.pm, revision 1.27
1.12 foxr 1:
1.1 www 2: # The LearningOnline Network with CAPA
3: # Handler to upload files into construction space
4: #
1.27 ! www 5: # $Id: lonupload.pm,v 1.26 2004/03/31 05:24:00 albertel Exp $
1.8 matthew 6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
1.10 harris41 29: ###
1.1 www 30:
31: package Apache::lonupload;
32:
33: use strict;
34: use Apache::File;
35: use File::Copy;
1.13 foxr 36: use File::Basename;
1.1 www 37: use Apache::Constants qw(:common :http :methods);
1.3 www 38: use Apache::loncacc;
1.10 harris41 39: use Apache::loncommon();
1.12 foxr 40: use Apache::Log();
1.13 foxr 41: use Apache::lonnet;
1.14 foxr 42: use HTML::Entities();
1.20 www 43: use Apache::lonlocal;
1.12 foxr 44:
45: my $DEBUG=0;
46:
47: sub Debug {
48:
1.22 albertel 49: # Marshall the parameters.
1.12 foxr 50:
1.22 albertel 51: my $r = shift;
52: my $log = $r->log;
53: my $message = shift;
1.12 foxr 54:
1.22 albertel 55: # Put out the indicated message butonly if DEBUG is false.
1.12 foxr 56:
1.22 albertel 57: if ($DEBUG) {
58: $log->debug($message);
59: }
1.12 foxr 60: }
1.1 www 61:
1.2 www 62: sub upfile_store {
63: my $r=shift;
64:
65: my $fname=$ENV{'form.upfile.filename'};
66: $fname=~s/\W//g;
67:
1.18 www 68: chomp($ENV{'form.upfile'});
1.1 www 69:
1.2 www 70: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
71: '_upload_'.$fname.'_'.time.'_'.$$;
72: {
73: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
74: '/tmp/'.$datatoken.'.tmp');
75: print $fh $ENV{'form.upfile'};
1.1 www 76: }
1.2 www 77: return $datatoken;
78: }
79:
80:
81: sub phaseone {
1.25 raeburn 82: my ($r,$fn,$uname,$udom,$mode)=@_;
83: my $action = '/adm/upload';
84: if ($mode eq 'testbank') {
85: $action = '/adm/testbank';
86: } elsif ($mode eq 'imsimport') {
87: $action = '/adm/imsimport';
88: }
1.22 albertel 89: $ENV{'form.upfile.filename'}=~s/\\/\//g;
90: $ENV{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
91: if ($ENV{'form.upfile.filename'}) {
92: $fn=~s/\/[^\/]+$//;
93: $fn=~s/([^\/])$/$1\//;
94: $fn.=$ENV{'form.upfile.filename'};
95: $fn=~s/^\///;
96: $fn=~s/(\/)+/\//g;
1.13 foxr 97:
98: # Fn is the full path to the destination filename.
99: #
100:
1.22 albertel 101: &Debug($r, "Filename for upload: $fn");
102: if (($fn) && ($fn!~/\/$/)) {
1.25 raeburn 103: $r->print('<form action="'.$action.'" method="post">'.
1.23 albertel 104: '<input type="hidden" name="phase" value="two" />'.
105: '<input type="hidden" name="datatoken" value="'.
106: &upfile_store.'" />'.
107: '<input type="hidden" name="uploaduname" value="'.$uname.
108: '" />'.&mt('Store uploaded file as ').
1.25 raeburn 109: "<tt>/priv/$uname/</tt>".
110: '<input type="text" size="50" name="filename" value="'.$fn.
111: '" /><br />');
112: $r->print('<br />'.&mt('Please indicate the type of file you are uploading. The possible types of file are as follows:').'
113: <ul>
114: <li><b>'.&mt('Regular file:').'</b>'.&mt(' A file that requires no special handling during upload. The "Regular file" designation applies to html files, image files etc., as well as to zip, tar or gzip files that you wish to decompress after upload. In the case of a zip/tar/gz file etc., once the file has been uploaded, a "Decompress" link will automatically be displayed adjacent to the name of the file in the display of construction space directory contents. You will be able to decompress this file by clicking the link.').'</li>
115: <li><b>'.&mt('Testbank file:').'</b>'.&mt(' a testbank file containing plain text (ascii) questions and answers, which you plan to convert to LON-CAPA problems. The following question types can be converted: 1 of N multiple choice questions, individual True/False questions, groups of True/False questions, Fill-in-the-blank questions, Ranking questions, and Essay/short answer questions. Specific information about the format of the questions, foils, and correct answers is available ').'<a href="javascript:testbankWin()">'.&mt('here').'</a>,'.&mt(' and is also included in the pages displayed during step-by-step conversion of the testbank. The original testbank file can be removed from your construction space later, once the testbank questions have been converted.').'</li>
116: <li><b>'.&mt('IMS package').':</b>'.&mt(' a file containing course content from another Course Management System (e.g., Blackboard or ANGEL) packaged according to the IMS 1.1 specification. The original IMS package file can be removed from your construction space later, once the package has been decompressed and the files converted to LON-CAPA sequence, page, problem, or bulletin board files, or stored as html, image or movie files etc., as appropriate.').'</li>
117: </ul>
118: <br />'.&mt('Choose file type:').'
119: <select name="filetype">
120: <option value="standard" selected>'.&mt('Regular file').'
121: <option value="testbank">'.&mt('Testbank file').'
122: <option value="imsimport">'.&mt('IMS package').'
123: </select>
124: <br />
125: <br />
126: ');
127: $r->print('<input type="button" value="'.&mt('Store').'" onClick="javascript:verifyForm()"/></form>');
1.22 albertel 128: # Check for bad extension and warn user
129: if ($fn=~/\.(\w+)$/ &&
130: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
1.23 albertel 131: $r->print('<font color="red">'.&mt('The extension on this file,').
1.22 albertel 132: ' "'.$1.'"'.&mt(', is reserved internally by LON-CAPA.').
1.23 albertel 133: ' <br />'.&mt('Please change the extension.').'</font>');
1.22 albertel 134: } elsif($fn=~/\.(\w+)$/ &&
135: !defined(&Apache::loncommon::fileembstyle($1))) {
1.23 albertel 136: $r->print('<font color="red">'.&mt('The extension on this file,').
1.22 albertel 137: ' "'.$1.'"'.&mt(', is not recognized by LON-CAPA.').
1.23 albertel 138: ' <br />'.&mt('Please change the extension.').
1.22 albertel 139: '</font>');
140: }
141: } else {
1.23 albertel 142: $r->print('<font color="red">'.&mt('Illegal filename.').'</font>');
1.22 albertel 143: }
144: } else {
1.23 albertel 145: $r->print('<font color="red">'.&mt('No upload file specified.').'</font>');
1.22 albertel 146: }
1.1 www 147: }
148:
149: sub phasetwo {
1.25 raeburn 150: my ($r,$tfn,$uname,$udom,$mode)=@_;
151: my $action = '/adm/upload';
152: my $returnflag = '';
153: if ($mode eq 'testbank') {
154: $action = '/adm/testbank';
155: } elsif ($mode eq 'imsimport') {
156: $action = '/adm/imsimport';
157: }
1.22 albertel 158: my $fn='/priv/'.$uname.'/'.$tfn;
159: $fn=~s/\/+/\//g;
160: &Debug($r, "Filename is ".$tfn);
161: if ($tfn) {
162: &Debug($r, "Filename for tfn = ".$tfn);
163: my $target='/home/'.$uname.'/public_html'.$tfn;
164: &Debug($r, "target -> ".$target);
1.13 foxr 165: # target is the full filesystem path of the destination file.
1.22 albertel 166: my $base = &File::Basename::basename($fn);
167: my $path = &File::Basename::dirname($fn);
1.26 albertel 168: $base = &HTML::Entities::encode($base,'<>&"');
1.22 albertel 169: my $url = $path."/".$base;
170: &Debug($r, "URL is now ".$url);
171: my $datatoken=$ENV{'form.datatoken'};
172: if (($fn) && ($datatoken)) {
173: if ((-e $target) && ($ENV{'form.override'} ne 'Yes')) {
1.25 raeburn 174: $r->print('<form action="'.$action.'" method="post">'.
1.22 albertel 175: &mt('File').' <tt>'.$fn.'</tt> '.
176: &mt('exists. Overwrite?').' '.
1.23 albertel 177: '<input type="hidden" name="phase" value="two" />'.
178: '<input type="hidden" name="filename" value="'."$url".'" />'.
179: '<input type="hidden" name="datatoken" value="'.$datatoken.'" />'.
180: '<input type="submit" name="override" value="'.&mt('Yes').'" /></form>');
1.22 albertel 181: } else {
182: my $source=$r->dir_config('lonDaemons').'/tmp/'.$datatoken.'.tmp';
1.27 ! www 183: my $dirpath=$path.'/';
! 184: $dirpath=~s/\/+/\//g;
1.22 albertel 185: # Check for bad extension and disallow upload
186: if ($fn=~/\.(\w+)$/ &&
187: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
188: $r->print(&mt('File').' <tt>'.$fn.'</tt> '.
189: &mt('could not be copied.').'<br />'.
1.23 albertel 190: '<font color="red">'.
1.22 albertel 191: &mt('The extension on this file is reserved internally by LON-CAPA.').
192: '</font>');
1.27 ! www 193: $r->print('<br /><font size=+2><a href="'.$dirpath.'">'.
1.22 albertel 194: &mt('Back to Directory').'</a></font>');
195: } elsif ($fn=~/\.(\w+)$/ &&
196: !defined(&Apache::loncommon::fileembstyle($1))) {
197: $r->print(&mt('File').' <tt>'.$fn.'</tt> '.
198: &mt('could not be copied.').'<br />'.
1.23 albertel 199: '<font color="red">'.
1.22 albertel 200: &mt('The extension on this file is not recognized by LON-CAPA.').
201: '</font>');
1.27 ! www 202: $r->print('<br /><font size="+2"><a href="'.$dirpath.'">'.
1.22 albertel 203: &mt('Back to Directory').'</a></font>');
204: } elsif (-d $target) {
205: $r->print('File <tt>'.$fn.'</tt> could not be copied.<br />'.
1.23 albertel 206: '<font color="red">'.
1.22 albertel 207: &mt('The target is an existing directory.').
1.23 albertel 208: '</font><br />');
1.27 ! www 209: $r->print('<font size="+2"><a href="'.$dirpath.'">'.
1.22 albertel 210: &mt('Back to Directory').'</a></font>');
211: } elsif (copy($source,$target)) {
212: chmod(0660, $target); # Set permissions to rw-rw---.
1.25 raeburn 213: if ($mode eq 'testbank' || $mode eq 'imsimport') {
214: $r->print(&mt("Your file - $fn - was uploaded successfully")."<br /><br />");
215: $returnflag = 'ok';
216: } else {
217: $r->print(&mt('File copied.'));
218: $r->print('<br /><font size="+2"><a href="'.$url.'">'.
1.22 albertel 219: &mt('View file').'</a></font>');
1.27 ! www 220: $r->print('<br /><font size="+2"><a href="'.$dirpath.'">'.
1.23 albertel 221: &mt('Back to Directory').'</a></font><br />');
1.25 raeburn 222: }
1.22 albertel 223: } else {
224: $r->print('Failed to copy: '.$!);
1.23 albertel 225: $r->print('<br /><font size="+2"><a href="'.$path.'">'.
1.22 albertel 226: &mt('Back to Directory').'</a></font>');
227: }
228: }
229: } else {
1.23 albertel 230: $r->print('<font size="+1" color="red">'.
1.22 albertel 231: &mt('Please use browser "Back" button and pick a filename').
1.24 albertel 232: '</font><br />');
1.22 albertel 233: }
1.1 www 234: } else {
1.22 albertel 235: $r->print('<font size=+1 color=red>'.
236: &mt('Please use browser "Back" button and pick a filename').
1.24 albertel 237: '</font><br />>');
1.1 www 238: }
1.25 raeburn 239: return $returnflag;
1.1 www 240: }
241:
1.10 harris41 242: # ---------------------------------------------------------------- Main Handler
1.1 www 243: sub handler {
244:
1.22 albertel 245: my $r=shift;
1.1 www 246:
1.22 albertel 247: my $uname;
248: my $udom;
1.25 raeburn 249: my $javascript = '';
1.18 www 250: #
251: # phase two: re-attach user
252: #
1.22 albertel 253: if ($ENV{'form.uploaduname'}) {
254: $ENV{'form.filename'}='/priv/'.$ENV{'form.uploaduname'}.'/'.
255: $ENV{'form.filename'};
256: }
257:
1.25 raeburn 258: unless ($ENV{'form.phase'} eq 'two') {
259: $javascript = qq|
260: function verifyForm() {
261: var mode = document.forms[0].filetype.options[document.forms[0].filetype.selectedIndex].value
262: if (mode == "testbank") {
263: document.forms[0].action = "/adm/testbank";
264: }
265: if (mode == "imsimport") {
266: document.forms[0].action = "/adm/imsimport";
267: }
268: if (mode == "standard") {
269: document.forms[0].action = "/adm/upload";
270: }
271: document.forms[0].submit();
272: }
273:
274: function testbankWin() {
275: newWindow = window.open("","testbankinfo","HEIGHT=400,WIDTH=750,scrollbars=yes")
276: newWindow.document.open()
277: newWindow.document.write("<html><head><title>'Importing a Testbank file into LON-CAPA</title><meta http-equiv='pragma' content='no-cache'>\\n")
278: newWindow.document.write("</head><body bgcolor='#CCFFDD' topmargin='0' leftmargin='0' marginheight='0'marginwidth='0' rightmargin='0'>\\n")
279: newWindow.document.write("<img border='0' src='/adm/lonInterFace/author.jpg' alt='[Author Header]'>\\n")
280: newWindow.document.write("<table border='0' cellspacing='0' cellpadding='0' width='95%' bgcolor='#CCFFDD'>\\n")
281: newWindow.document.write("<tr><td width='2'> </td><td width='3'> </td>\\n")
282: newWindow.document.write("<td><font face='arial,helvetica,sans-serif'><h3>Importing Testbank questions into LON-CAPA</h3>")
283: newWindow.document.write("<font face='arial,helvetica,sans-serif'><br />Four requirements must be met to ensure that you will succeed in building LON-CAPA problem files using your plain text file containing testbank questions.")
284: newWindow.document.write("<ol><li>The questions and answers you upload must be in plain text format. Any header lines should occur before the text containing the questions and answers.</li>")
285: newWindow.document.write("<li>All questions must occur before any of the answers. Each question should be numbered sequentially using a number followed immediately by a space, a period, or enclosed in parentheses, i.e., 1 , 1., (1), 1), or (1 .</li>")
286: newWindow.document.write("<li>One or more correct answers should be provided for all questions (although blank answers may be provided for <i>essay</i> questions). Answers should be numbered sequentially, using the same scheme as used for the questions, and must occur after all the questions.")
287: newWindow.document.write("<li><i>Multiple choice</i> and <i>multiple answer correct</i> questions should consist of (i) the question number followed by (ii) a question stem beginning on the same line and (iii) two or more foils, with each foil beginning on a new line and prefixed by a unique letter, or Roman numeral, listed in alphabetic or numeric order, beginning at a (alphabetic) or i (Roman numeral), followed by a period, or enclosed in parentheses, i.e., a., (a), i., or (i) .</li>")
288: newWindow.document.write("<li>If <i>fill-in-the-blank</i> or <i>multiple answer</i> questions have more than one correct answer, each answer should appear in a comma-, tab-, space-, or new line-delimited list. </li></ol>")
289: newWindow.document.write("</td></tr>\\n")
290: newWindow.document.write("</table></body></html>")
291: newWindow.document.close()
292: newWindow.focus()
293: }
294: |;
295: }
1.22 albertel 296: ($uname,$udom)=
297: &Apache::loncacc::constructaccess($ENV{'form.filename'},
298: $r->dir_config('lonDefDomain'));
299: unless (($uname) && ($udom)) {
300: $r->log_reason($uname.' at '.$udom.
301: ' trying to publish file '.$ENV{'form.filename'}.
302: ' - not authorized',
303: $r->filename);
304: return HTTP_NOT_ACCEPTABLE;
305: }
306:
307: my $fn;
308: if ($ENV{'form.filename'}) {
309: $fn=$ENV{'form.filename'};
310: $fn=~s/^http\:\/\/[^\/]+\///;
311: $fn=~s/^\///;
312: $fn=~s/(\~|priv\/)(\w+)//;
313: $fn=~s/\/+/\//g;
314: } else {
315: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
316: ' unspecified filename for upload', $r->filename);
317: return HTTP_NOT_FOUND;
318: }
1.1 www 319:
320: # ----------------------------------------------------------- Start page output
321:
322:
1.22 albertel 323: &Apache::loncommon::content_type($r,'text/html');
324: $r->send_http_header;
1.1 www 325:
1.25 raeburn 326: $r->print("<html><head><title>LON-CAPA Construction Space</title><script type=\"text/javascript\">\n//<!--\n$javascript\n// --></script>\n</head>");
1.1 www 327:
1.22 albertel 328: $r->print(&Apache::loncommon::bodytag('Upload file to Construction Space'));
1.3 www 329:
1.22 albertel 330: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
331: $r->print('<h3><font color=red>'.&mt('Co-Author').': '.$uname.
332: &mt(' at ').$udom.'</font></h3>');
333: }
334:
335: if ($ENV{'form.phase'} eq 'two') {
336: &phasetwo($r,$fn,$uname,$udom);
337: } else {
338: &phaseone($r,$fn,$uname,$udom);
339: }
1.1 www 340:
1.22 albertel 341: $r->print('</body></html>');
342: return OK;
1.1 www 343: }
1.7 www 344:
345: 1;
346: __END__
1.10 harris41 347:
348: =head1 NAME
349:
350: Apache::lonupload - upload files into construction space
351:
352: =head1 SYNOPSIS
353:
354: Invoked by /etc/httpd/conf/srm.conf:
355:
356: <Location /adm/upload>
357: PerlAccessHandler Apache::lonacc
358: SetHandler perl-script
359: PerlHandler Apache::lonupload
360: ErrorDocument 403 /adm/login
361: ErrorDocument 404 /adm/notfound.html
362: ErrorDocument 406 /adm/unauthorized.html
363: ErrorDocument 500 /adm/errorhandler
364: </Location>
365:
366: =head1 INTRODUCTION
367:
368: This module uploads a file sitting on a client computer into
369: library server construction space.
370:
371: This is part of the LearningOnline Network with CAPA project
372: described at http://www.lon-capa.org.
373:
374: =head1 HANDLER SUBROUTINE
375:
376: This routine is called by Apache and mod_perl.
377:
378: =over 4
379:
380: =item *
381:
382: Initialize variables
383:
384: =item *
385:
386: Start page output
387:
388: =item *
389:
390: output relevant interface phase (phaseone or phasetwo)
391:
392: =item *
393:
394: (phase one is to specify upload file; phase two is to handle conditions
395: subsequent to specification--like overwriting an existing file)
396:
397: =back
398:
399: =head1 OTHER SUBROUTINES
400:
401: =over 4
402:
403: =item *
404:
405: phaseone() : Interface for specifying file to upload.
406:
407: =item *
408:
409: phasetwo() : Interface for handling post-conditions about uploading (such
410: as overwriting an existing file).
411:
412: =item *
413:
414: upfile_store() : Store contents of uploaded file into temporary space. Invoked
415: by phaseone subroutine.
416:
417: =back
418:
419: =cut
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