Annotation of loncom/publisher/lonupload.pm, revision 1.50
1.12 foxr 1:
1.1 www 2: # The LearningOnline Network with CAPA
3: # Handler to upload files into construction space
4: #
1.50 ! raeburn 5: # $Id: lonupload.pm,v 1.49 2010/02/16 10:26:17 bisitz 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:
1.39 jms 31: =head1 NAME
32:
33: Apache::lonupload - upload files into construction space
34:
35: =head1 SYNOPSIS
36:
37: Invoked by /etc/httpd/conf/srm.conf:
38:
39: <Location /adm/upload>
40: PerlAccessHandler Apache::lonacc
41: SetHandler perl-script
42: PerlHandler Apache::lonupload
43: ErrorDocument 403 /adm/login
44: ErrorDocument 404 /adm/notfound.html
45: ErrorDocument 406 /adm/unauthorized.html
46: ErrorDocument 500 /adm/errorhandler
47: </Location>
48:
49: =head1 INTRODUCTION
50:
51: This module uploads a file sitting on a client computer into
52: library server construction space.
53:
54: This is part of the LearningOnline Network with CAPA project
55: described at http://www.lon-capa.org.
56:
57: =head1 HANDLER SUBROUTINE
58:
59: This routine is called by Apache and mod_perl.
60:
61: =over 4
62:
63: =item *
64:
65: Initialize variables
66:
67: =item *
68:
69: Start page output
70:
71: =item *
72:
73: output relevant interface phase (phaseone or phasetwo or phasethree)
74:
75: =item *
76:
77: (phase one is to specify upload file; phase two is to handle conditions
78: subsequent to specification--like overwriting an existing file; phase three
79: is to handle processing of secondary uploads - of embedded objects in an
80: html file).
81:
82: =back
83:
84: =head1 OTHER SUBROUTINES
85:
1.40 jms 86: =over
1.39 jms 87:
1.40 jms 88: =item phaseone()
1.39 jms 89:
1.40 jms 90: Interface for specifying file to upload.
1.39 jms 91:
1.40 jms 92: =item phasetwo()
1.39 jms 93:
1.40 jms 94: Interface for handling post-conditions about uploading (such
1.39 jms 95: as overwriting an existing file).
96:
1.40 jms 97: =item phasethree()
1.39 jms 98:
1.40 jms 99: Interface for handling secondary uploads of embedded objects
1.39 jms 100: in an html file.
101:
1.40 jms 102: =item upfile_store()
1.39 jms 103:
1.40 jms 104: Store contents of uploaded file into temporary space. Invoked
1.39 jms 105: by phaseone subroutine.
106:
1.40 jms 107: =item check_extension()
1.39 jms 108:
1.40 jms 109: Checks if filename extension is permitted and checks type
1.39 jms 110: of file - if html file, calls parser to check for embedded objects.
111: Invoked by phasetwo subroutine.
112:
113: =back
114:
115: =cut
116:
1.1 www 117: package Apache::lonupload;
118:
119: use strict;
120: use Apache::File;
121: use File::Copy;
1.13 foxr 122: use File::Basename;
1.1 www 123: use Apache::Constants qw(:common :http :methods);
1.3 www 124: use Apache::loncacc;
1.10 harris41 125: use Apache::loncommon();
1.13 foxr 126: use Apache::lonnet;
1.14 foxr 127: use HTML::Entities();
1.20 www 128: use Apache::lonlocal;
1.29 albertel 129: use Apache::lonnet;
1.34 albertel 130: use LONCAPA();
1.12 foxr 131:
132: my $DEBUG=0;
133:
134: sub Debug {
1.30 albertel 135: # Put out the indicated message but only if DEBUG is true.
1.22 albertel 136: if ($DEBUG) {
1.30 albertel 137: my ($r,$message) = @_;
138: $r->log_reason($message);
1.22 albertel 139: }
1.12 foxr 140: }
1.1 www 141:
1.2 www 142: sub upfile_store {
143: my $r=shift;
144:
1.29 albertel 145: my $fname=$env{'form.upfile.filename'};
1.2 www 146: $fname=~s/\W//g;
147:
1.29 albertel 148: chomp($env{'form.upfile'});
1.1 www 149:
1.29 albertel 150: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
1.2 www 151: '_upload_'.$fname.'_'.time.'_'.$$;
152: {
153: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
154: '/tmp/'.$datatoken.'.tmp');
1.29 albertel 155: print $fh $env{'form.upfile'};
1.1 www 156: }
1.2 www 157: return $datatoken;
158: }
159:
160: sub phaseone {
1.25 raeburn 161: my ($r,$fn,$uname,$udom,$mode)=@_;
162: my $action = '/adm/upload';
163: if ($mode eq 'testbank') {
164: $action = '/adm/testbank';
165: } elsif ($mode eq 'imsimport') {
166: $action = '/adm/imsimport';
167: }
1.49 bisitz 168:
169: # Check for file to be uploaded
1.29 albertel 170: $env{'form.upfile.filename'}=~s/\\/\//g;
171: $env{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
1.49 bisitz 172: if (!$env{'form.upfile.filename'}) {
173: $r->print('<p class="LC_warning">'.&mt('No upload file specified.').'</p>');
174: return;
175: }
176:
177: $fn=~s/\/[^\/]+$//;
178: $fn=~s/([^\/])$/$1\//;
179: $fn.=$env{'form.upfile.filename'};
180: $fn=~s/^\///;
181: $fn=~s/(\/)+/\//g;
182: # Fn is the full path to the destination filename.
183:
184: # Check for illegal filename
185: &Debug($r, "Filename for upload: $fn");
186: if (!(($fn) && ($fn!~/\/$/))) {
187: $r->print('<p class="LC_warning">'.&mt('Illegal filename.').'</p>');
188: return;
189: }
190:
191: # Display additional options for upload
192: # and upload button
193: $r->print(
194: '<form action="'.$action.'" method="post" name="fileupload">'
195: .'<input type="hidden" name="phase" value="two" />'
196: .'<input type="hidden" name="datatoken" value="'.&upfile_store.'" />'
197: .'<input type="hidden" name="uploaduname" value="'.$uname.'" />'
198: );
199: $r->print(
200: &Apache::lonhtmlcommon::start_pick_box()
201: .&Apache::lonhtmlcommon::row_title(&mt('Save uploaded file as'))
202: .'<span class="LC_filename">/priv/'.$uname.'/</span>'
203: .'<input type="text" size="50" name="filename" value="'.$fn.'" />'
204: .&Apache::lonhtmlcommon::row_closure()
205: .&Apache::lonhtmlcommon::row_title(&mt('File Type'))
206: .'<select name="filetype">'
207: .'<option value="standard" selected="selected">'.&mt('Regular file').'</option>'
208: .'<option value="testbank">'.&mt('Testbank file').'</option>'
209: .'<option value="imsimport">'.&mt('IMS package').'</option>'
210: .'</select>'.&Apache::loncommon::help_open_topic("Uploading_File_Options")
211: .&Apache::lonhtmlcommon::row_closure(1)
212: .&Apache::lonhtmlcommon::end_pick_box()
213: );
214: $r->print(
215: '<p>'
216: .'<input type="button" value="'.&mt('Upload').'" onclick="javascript:verifyForm()"/>'
217: .'</p>'
218: .'</form>'
219: );
1.13 foxr 220:
1.49 bisitz 221: # Check for bad extension and warn user
222: if ($fn=~/\.(\w+)$/ &&
223: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
1.41 bisitz 224: $r->print('<p class="LC_error">'
1.49 bisitz 225: .&mt('The extension on this file, [_1], is reserved internally by LON-CAPA.',
226: '<span class="LC_filename">'.$1.'</span>')
1.41 bisitz 227: .' <br />'.&mt('Please change the extension.')
228: .'</p>');
1.49 bisitz 229: } elsif($fn=~/\.(\w+)$/ &&
230: !defined(&Apache::loncommon::fileembstyle($1))) {
1.41 bisitz 231: $r->print('<p class="LC_error">'
1.49 bisitz 232: .&mt('The extension on this file, [_1], is not recognized by LON-CAPA.',
233: '<span class="LC_filename">'.$1.'</span>')
1.41 bisitz 234: .' <br />'.&mt('Please change the extension.')
235: .'</p>');
1.22 albertel 236: }
1.1 www 237: }
238:
239: sub phasetwo {
1.25 raeburn 240: my ($r,$tfn,$uname,$udom,$mode)=@_;
1.37 raeburn 241: my $output;
1.25 raeburn 242: my $action = '/adm/upload';
243: my $returnflag = '';
244: if ($mode eq 'testbank') {
245: $action = '/adm/testbank';
246: } elsif ($mode eq 'imsimport') {
247: $action = '/adm/imsimport';
248: }
1.22 albertel 249: my $fn='/priv/'.$uname.'/'.$tfn;
250: $fn=~s/\/+/\//g;
251: &Debug($r, "Filename is ".$tfn);
252: if ($tfn) {
253: &Debug($r, "Filename for tfn = ".$tfn);
254: my $target='/home/'.$uname.'/public_html'.$tfn;
255: &Debug($r, "target -> ".$target);
1.13 foxr 256: # target is the full filesystem path of the destination file.
1.22 albertel 257: my $base = &File::Basename::basename($fn);
258: my $path = &File::Basename::dirname($fn);
1.26 albertel 259: $base = &HTML::Entities::encode($base,'<>&"');
1.22 albertel 260: my $url = $path."/".$base;
261: &Debug($r, "URL is now ".$url);
1.29 albertel 262: my $datatoken=$env{'form.datatoken'};
1.22 albertel 263: if (($fn) && ($datatoken)) {
1.36 www 264: if ($env{'form.cancel'}) {
265: my $source=$r->dir_config('lonDaemons').'/tmp/'.$datatoken.'.tmp';
266: my $dirpath=$path.'/';
267: $dirpath=~s/\/+/\//g;
1.49 bisitz 268: $output .= '<p class="LC_warning">'.&mt('Upload cancelled.').'</p>'
269: .'<p><a href="'.$dirpath.'">'.
270: &mt('Back to Directory').'</a></p>';
271: } elsif ((-e $target) && (!$env{'form.override'})) {
272: $output .= '<form action="'.$action.'" method="post">'
273: .'<p class="LC_warning">'
274: .&mt('File [_1] already exists.',
275: '<span class="LC_filename">'.$fn.'</span>')
276: .'<input type="hidden" name="phase" value="two" />'
277: .'<input type="hidden" name="filename" value="'.$url.'" />'
278: .'<input type="hidden" name="datatoken" value="'.$datatoken.'" />'
279: .'<p>'
280: .'<input type="submit" name="cancel" value="'.&mt('Cancel').'" />'
281: .' <input type="submit" name="override" value="'.&mt('Overwrite').'" />'
282: .'</p>'
283: .'</form>';
1.36 www 284: } else {
1.22 albertel 285: my $source=$r->dir_config('lonDaemons').'/tmp/'.$datatoken.'.tmp';
1.27 www 286: my $dirpath=$path.'/';
287: $dirpath=~s/\/+/\//g;
1.22 albertel 288: # Check for bad extension and disallow upload
1.37 raeburn 289: my $result;
290: ($result,$returnflag) = &check_extension($fn,$mode,$source,$target,$action,$dirpath,$url);
291: $output .= $result;
1.22 albertel 292: }
293: } else {
1.37 raeburn 294: $output .= '<span class="LC_error">'.
1.22 albertel 295: &mt('Please use browser "Back" button and pick a filename').
1.37 raeburn 296: '</span><br />';
1.22 albertel 297: }
1.1 www 298: } else {
1.37 raeburn 299: $output .= '<span class="LC_error">'.
300: &mt('Please use browser "Back" button and pick a filename').
301: '</span><br />';
302: }
303: return ($output,$returnflag);
304: }
305:
306: sub check_extension {
307: my ($fn,$mode,$source,$target,$action,$dirpath,$url) = @_;
308: my ($result,$returnflag);
309: # Check for bad extension and disallow upload
310: if ($fn=~/\.(\w+)$/ &&
311: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
1.49 bisitz 312: $result .= '<p class="LC_warning">'.
313: &mt('File [_1] could not be copied.',
314: '<span class="LC_filename">'.$fn.'</span> ').
315: '<br />'.
316: &mt('The extension on this file is reserved internally by LON-CAPA.').
317: '</p>';
1.37 raeburn 318: } elsif ($fn=~/\.(\w+)$/ &&
319: !defined(&Apache::loncommon::fileembstyle($1))) {
1.49 bisitz 320: $result .= '<p class="LC_warning">'.
321: &mt('File [_1] could not be copied.',
322: '<span class="LC_filename">'.$fn.'</span> ').
323: '<br />'.
324: &mt('The extension on this file is not recognized by LON-CAPA.').
325: '</p>';
1.37 raeburn 326: } elsif (-d $target) {
1.49 bisitz 327: $result .= '<p class="LC_warning">'.
328: &mt('File [_1] could not be copied.',
329: '<span class="LC_filename">'.$fn.'</span>').
330: '<br />'.
331: &mt('The target is an existing directory.').
332: '</p>';
1.37 raeburn 333: } elsif (copy($source,$target)) {
334: chmod(0660, $target); # Set permissions to rw-rw---.
335: if ($mode eq 'testbank' || $mode eq 'imsimport') {
336: $returnflag = 'ok';
1.49 bisitz 337: $result .= '<p class="LC_success">'
338: .&mt('Your file - [_1] - was uploaded successfully.',
339: '<span class="LC_filename">'.$fn.'<span>')
340: .'</p>';
1.37 raeburn 341: } else {
1.49 bisitz 342: $result .= '<p class="LC_success">'
343: .&mt('File copied.')
344: .'</p>';
1.37 raeburn 345: }
346: # Check for embedded objects.
347: my (%allfiles,%codebase);
348: my ($text,$header,$css,$js);
349: if (($mode ne 'imsimport') && ($target =~ /\.(htm|html|shtml)$/i)) {
350: my (%allfiles,%codebase);
351: &Apache::lonnet::extract_embedded_items($target,\%allfiles,\%codebase);
352: if (keys(%allfiles) > 0) {
1.50 ! raeburn 353: my ($currentpath) = ($url =~ m{^(.+)/[^/]+$});
1.37 raeburn 354: my $state = <<STATE;
355: <input type="hidden" name="action" value="upload_embedded" />
356: <input type="hidden" name="mode" value="$mode" />
357: <input type="hidden" name="phase" value="three" />
358: <input type="hidden" name="filename" value="$url" />
359: STATE
1.50 ! raeburn 360: my $embedded = &Apache::loncommon::ask_for_embedded_content($action,$state,\%allfiles,\%codebase,
1.37 raeburn 361: {'error_on_invalid_names' => 1,
1.50 ! raeburn 362: 'ignore_remote_references' => 1,
! 363: 'current_path' => $currentpath});
! 364: if ($embedded) {
! 365: $result .= '<h3>'.&mt('Reference Warning').'</h3>'.
! 366: '<p>'.&mt('Completed upload of the file. This file contained references to other files.').'</p>'.
! 367: '<p>'.&mt('Please select the locations from which the referenced files are to be uploaded.').'</p>'.
! 368: $embedded;
! 369: }
1.37 raeburn 370: if ($mode eq 'testbank') {
371: $returnflag = 'embedded';
372: $result .= '<p>'.&mt('Or [_1]continue[_2] the testbank import without these files','<a href="javascript:document.testbankForm.submit();">','</a>').'</p>';
373: }
374: }
375: }
376: if (($mode ne 'imsimport') && ($mode ne 'testbank')) {
1.49 bisitz 377: $result .= '<br /><a href="'.$url.'">'.
378: &mt('View file').'</a>';
1.37 raeburn 379: }
380: } else {
381: $result .= &mt('Failed to copy: [_1].',$!);
382: }
383: if ($mode ne 'imsimport' && $mode ne 'testbank') {
1.49 bisitz 384: $result .= '<br /><a href="'.$dirpath.'">'.
385: &mt('Back to Directory').'</a><br />';
1.37 raeburn 386: }
387: return ($result,$returnflag);
388: }
389:
390: sub phasethree {
391: my ($r,$fn,$uname,$udom,$mode) = @_;
392: my $result;
393: my $dir_root = '/home/'.$uname.'/public_html';
394: my $url_root = '/priv/'.$uname;
395: my $base = &File::Basename::basename($fn);
396: my $path = &File::Basename::dirname($fn);
397: $result = &Apache::loncommon::upload_embedded($mode,$path,$uname,$udom,
398: $dir_root,$url_root);
399: if ($mode ne 'imsimport' && $mode ne 'testbank') {
400: $result = '<br /><font size="+2"><a href="'.$url_root.$fn.'">'.
401: &mt('View main file').'</a></font>'.
402: '<br /><font size="+2"><a href="'.$url_root.$path.'">'.
403: &mt('Back to Directory').'</a></font><br />';
1.1 www 404: }
1.37 raeburn 405: return $result;
1.1 www 406: }
407:
1.10 harris41 408: # ---------------------------------------------------------------- Main Handler
1.1 www 409: sub handler {
410:
1.22 albertel 411: my $r=shift;
1.1 www 412:
1.22 albertel 413: my $uname;
414: my $udom;
1.25 raeburn 415: my $javascript = '';
1.18 www 416: #
417: # phase two: re-attach user
418: #
1.29 albertel 419: if ($env{'form.uploaduname'}) {
420: $env{'form.filename'}='/priv/'.$env{'form.uploaduname'}.'/'.
421: $env{'form.filename'};
1.22 albertel 422: }
423:
1.29 albertel 424: unless ($env{'form.phase'} eq 'two') {
1.25 raeburn 425: $javascript = qq|
426: function verifyForm() {
1.28 raeburn 427: var mode = document.fileupload.filetype.options[document.fileupload.filetype.selectedIndex].value
1.25 raeburn 428: if (mode == "testbank") {
1.28 raeburn 429: document.fileupload.action = "/adm/testbank";
1.25 raeburn 430: }
431: if (mode == "imsimport") {
1.28 raeburn 432: document.fileupload.action = "/adm/imsimport";
1.25 raeburn 433: }
434: if (mode == "standard") {
1.28 raeburn 435: document.fileupload.action = "/adm/upload";
1.25 raeburn 436: }
1.28 raeburn 437: document.fileupload.submit();
1.25 raeburn 438: }
1.33 albertel 439: |;
1.25 raeburn 440: }
1.22 albertel 441: ($uname,$udom)=
1.29 albertel 442: &Apache::loncacc::constructaccess($env{'form.filename'},
1.22 albertel 443: $r->dir_config('lonDefDomain'));
1.37 raeburn 444:
1.22 albertel 445: unless (($uname) && ($udom)) {
446: $r->log_reason($uname.' at '.$udom.
1.29 albertel 447: ' trying to publish file '.$env{'form.filename'}.
1.22 albertel 448: ' - not authorized',
449: $r->filename);
450: return HTTP_NOT_ACCEPTABLE;
451: }
452:
453: my $fn;
1.29 albertel 454: if ($env{'form.filename'}) {
455: $fn=$env{'form.filename'};
1.43 raeburn 456: $fn=~s/^https?\:\/\/[^\/]+\///;
1.22 albertel 457: $fn=~s/^\///;
1.34 albertel 458: $fn=~s{(~|priv/)($LONCAPA::username_re)}{};
1.22 albertel 459: $fn=~s/\/+/\//g;
460: } else {
1.29 albertel 461: $r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
1.22 albertel 462: ' unspecified filename for upload', $r->filename);
463: return HTTP_NOT_FOUND;
464: }
1.1 www 465:
466: # ----------------------------------------------------------- Start page output
467:
468:
1.22 albertel 469: &Apache::loncommon::content_type($r,'text/html');
470: $r->send_http_header;
1.1 www 471:
1.31 albertel 472: $javascript = "<script type=\"text/javascript\">\n//<!--\n".
473: $javascript."\n// --></script>\n";
1.1 www 474:
1.47 bisitz 475: # Breadcrumbs
476: my $brcrum = [{'href' => &Apache::loncommon::authorspace(),
477: 'text' => 'Construction Space'},
478: {'href' => '/adm/upload',
479: 'text' => 'Upload file to Construction Space'}];
1.31 albertel 480: $r->print(&Apache::loncommon::start_page('Upload file to Construction Space',
1.47 bisitz 481: $javascript,
482: {'bread_crumbs' => $brcrum,})
483: .&Apache::loncommon::head_subbox(
484: &Apache::loncommon::CSTR_pageheader())
485: );
1.3 www 486:
1.29 albertel 487: if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
1.44 bisitz 488: $r->print('<p class="LC_warning">'
1.46 bisitz 489: .&mt('Co-Author [_1]',$uname.':'.$udom)
1.44 bisitz 490: .'</p>'
491: );
1.22 albertel 492: }
493:
1.37 raeburn 494: if ($env{'form.phase'} eq 'three') {
495: my $output = &phasethree($r,$fn,$uname,$udom,'author');
496: $r->print($output);
497: } elsif ($env{'form.phase'} eq 'two') {
498: my ($output,$returnflag) = &phasetwo($r,$fn,$uname,$udom);
499: $r->print($output);
1.22 albertel 500: } else {
501: &phaseone($r,$fn,$uname,$udom);
502: }
1.1 www 503:
1.31 albertel 504: $r->print(&Apache::loncommon::end_page());
1.22 albertel 505: return OK;
1.1 www 506: }
1.7 www 507:
508: 1;
509: __END__
1.10 harris41 510:
511:
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