Annotation of loncom/publisher/lonupload.pm, revision 1.22
1.12 foxr 1:
1.1 www 2: # The LearningOnline Network with CAPA
3: # Handler to upload files into construction space
4: #
1.22 ! albertel 5: # $Id: lonupload.pm,v 1.21 2003/11/08 10:58:30 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 $datatoken;
78: }
79:
80:
81: sub phaseone {
1.22 ! albertel 82: my ($r,$fn,$uname,$udom)=@_;
! 83: $ENV{'form.upfile.filename'}=~s/\\/\//g;
! 84: $ENV{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
! 85: if ($ENV{'form.upfile.filename'}) {
! 86: $fn=~s/\/[^\/]+$//;
! 87: $fn=~s/([^\/])$/$1\//;
! 88: $fn.=$ENV{'form.upfile.filename'};
! 89: $fn=~s/^\///;
! 90: $fn=~s/(\/)+/\//g;
1.13 foxr 91:
92: # Fn is the full path to the destination filename.
93: #
94:
1.22 ! albertel 95: &Debug($r, "Filename for upload: $fn");
! 96: if (($fn) && ($fn!~/\/$/)) {
! 97: $r->print('<form action=/adm/upload method=post>'.
! 98: '<input type=hidden name=phase value=two>'.
! 99: '<input type=hidden name=datatoken value="'.
! 100: &upfile_store.'">'.
! 101: '<input type=hidden name=uploaduname value="'.$uname.'">'.
! 102: &mt('Store uploaded file as ')."<tt>/priv/$uname/</tt>".
! 103: '<input type=text size=50 name=filename value="'.$fn.'"><br>'.
! 104: '<input type=submit value="'.&mt('Store').'"></form>');
! 105: # Check for bad extension and warn user
! 106: if ($fn=~/\.(\w+)$/ &&
! 107: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
! 108: $r->print('<font color=red>'.&mt('The extension on this file,').
! 109: ' "'.$1.'"'.&mt(', is reserved internally by LON-CAPA.').
! 110: ' <br \>'.&mt('Please change the extension.').'</font>');
! 111: } elsif($fn=~/\.(\w+)$/ &&
! 112: !defined(&Apache::loncommon::fileembstyle($1))) {
! 113: $r->print('<font color=red>'.&mt('The extension on this file,').
! 114: ' "'.$1.'"'.&mt(', is not recognized by LON-CAPA.').
! 115: ' <br \>'.&mt('Please change the extension.').
! 116: '</font>');
! 117: }
! 118: } else {
! 119: $r->print('<font color=red>'.&mt('Illegal filename.').'</font>');
! 120: }
! 121: } else {
! 122: $r->print('<font color=red>'.&mt('No upload file specified.').'</font>');
! 123: }
1.1 www 124: }
125:
126: sub phasetwo {
1.22 ! albertel 127: my ($r,$tfn,$uname,$udom)=@_;
! 128: my $fn='/priv/'.$uname.'/'.$tfn;
! 129: $fn=~s/\/+/\//g;
! 130: &Debug($r, "Filename is ".$tfn);
! 131: if ($tfn) {
! 132: &Debug($r, "Filename for tfn = ".$tfn);
! 133: my $target='/home/'.$uname.'/public_html'.$tfn;
! 134: &Debug($r, "target -> ".$target);
1.13 foxr 135: # target is the full filesystem path of the destination file.
1.22 ! albertel 136: my $base = &File::Basename::basename($fn);
! 137: my $path = &File::Basename::dirname($fn);
! 138: $base = &HTML::Entities::encode($base);
! 139: my $url = $path."/".$base;
! 140: &Debug($r, "URL is now ".$url);
! 141: my $datatoken=$ENV{'form.datatoken'};
! 142: if (($fn) && ($datatoken)) {
! 143: if ((-e $target) && ($ENV{'form.override'} ne 'Yes')) {
! 144: $r->print('<form action=/adm/upload method=post>'.
! 145: &mt('File').' <tt>'.$fn.'</tt> '.
! 146: &mt('exists. Overwrite?').' '.
! 147: '<input type=hidden name=phase value=two>'.
! 148: '<input type=hidden name=filename value="'."$url".'">'.
! 149: '<input type=hidden name=datatoken value="'.$datatoken.'">'.
! 150: '<input type=submit name=override value="'.&mt('Yes').'"></form>');
! 151: } else {
! 152: my $source=$r->dir_config('lonDaemons').'/tmp/'.$datatoken.'.tmp';
! 153: # Check for bad extension and disallow upload
! 154: if ($fn=~/\.(\w+)$/ &&
! 155: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
! 156: $r->print(&mt('File').' <tt>'.$fn.'</tt> '.
! 157: &mt('could not be copied.').'<br />'.
! 158: '<font color=red>'.
! 159: &mt('The extension on this file is reserved internally by LON-CAPA.').
! 160: '</font>');
! 161: $r->print('<p><font size=+2><a href="'.$path.'">'.
! 162: &mt('Back to Directory').'</a></font>');
! 163: } elsif ($fn=~/\.(\w+)$/ &&
! 164: !defined(&Apache::loncommon::fileembstyle($1))) {
! 165: $r->print(&mt('File').' <tt>'.$fn.'</tt> '.
! 166: &mt('could not be copied.').'<br />'.
! 167: '<font color=red>'.
! 168: &mt('The extension on this file is not recognized by LON-CAPA.').
! 169: '</font>');
! 170: $r->print('<p><font size=+2><a href="'.$path.'">'.
! 171: &mt('Back to Directory').'</a></font>');
! 172: } elsif (-d $target) {
! 173: $r->print('File <tt>'.$fn.'</tt> could not be copied.<br />'.
! 174: '<font color=red>'.
! 175: &mt('The target is an existing directory.').
! 176: '</font>');
! 177: $r->print('<p><font size=+2><a href="'.$path.'">'.
! 178: &mt('Back to Directory').'</a></font>');
! 179: } elsif (copy($source,$target)) {
! 180: chmod(0660, $target); # Set permissions to rw-rw---.
! 181: $r->print(&mt('File copied.'));
! 182: $r->print('<p><font size=+2><a href="'.$url.'">'.
! 183: &mt('View file').'</a></font>');
! 184: $r->print('<p><font size=+2><a href="'.$path.'">'.
! 185: &mt('Back to Directory').'</a></font>');
! 186: } else {
! 187: $r->print('Failed to copy: '.$!);
! 188: $r->print('<p><font size=+2><a href="'.$path.'">'.
! 189: &mt('Back to Directory').'</a></font>');
! 190: }
! 191: }
! 192: } else {
! 193: $r->print('<font size=+1 color=red>'.
! 194: &mt('Please use browser "Back" button and pick a filename').
! 195: '</font><p>');
! 196: }
1.1 www 197: } else {
1.22 ! albertel 198: $r->print('<font size=+1 color=red>'.
! 199: &mt('Please use browser "Back" button and pick a filename').
! 200: '</font><p>');
1.1 www 201: }
202: }
203:
1.10 harris41 204: # ---------------------------------------------------------------- Main Handler
1.1 www 205: sub handler {
206:
1.22 ! albertel 207: my $r=shift;
1.1 www 208:
1.22 ! albertel 209: my $uname;
! 210: my $udom;
1.18 www 211: #
212: # phase two: re-attach user
213: #
1.22 ! albertel 214: if ($ENV{'form.uploaduname'}) {
! 215: $ENV{'form.filename'}='/priv/'.$ENV{'form.uploaduname'}.'/'.
! 216: $ENV{'form.filename'};
! 217: }
! 218: #
! 219:
! 220: ($uname,$udom)=
! 221: &Apache::loncacc::constructaccess($ENV{'form.filename'},
! 222: $r->dir_config('lonDefDomain'));
! 223: unless (($uname) && ($udom)) {
! 224: $r->log_reason($uname.' at '.$udom.
! 225: ' trying to publish file '.$ENV{'form.filename'}.
! 226: ' - not authorized',
! 227: $r->filename);
! 228: return HTTP_NOT_ACCEPTABLE;
! 229: }
! 230:
! 231: my $fn;
! 232: if ($ENV{'form.filename'}) {
! 233: $fn=$ENV{'form.filename'};
! 234: $fn=~s/^http\:\/\/[^\/]+\///;
! 235: $fn=~s/^\///;
! 236: $fn=~s/(\~|priv\/)(\w+)//;
! 237: $fn=~s/\/+/\//g;
! 238: } else {
! 239: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
! 240: ' unspecified filename for upload', $r->filename);
! 241: return HTTP_NOT_FOUND;
! 242: }
1.1 www 243:
244: # ----------------------------------------------------------- Start page output
245:
246:
1.22 ! albertel 247: &Apache::loncommon::content_type($r,'text/html');
! 248: $r->send_http_header;
1.1 www 249:
1.22 ! albertel 250: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
1.1 www 251:
1.22 ! albertel 252: $r->print(&Apache::loncommon::bodytag('Upload file to Construction Space'));
1.3 www 253:
1.22 ! albertel 254: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
! 255: $r->print('<h3><font color=red>'.&mt('Co-Author').': '.$uname.
! 256: &mt(' at ').$udom.'</font></h3>');
! 257: }
! 258:
! 259: if ($ENV{'form.phase'} eq 'two') {
! 260: &phasetwo($r,$fn,$uname,$udom);
! 261: } else {
! 262: &phaseone($r,$fn,$uname,$udom);
! 263: }
1.1 www 264:
1.22 ! albertel 265: $r->print('</body></html>');
! 266: return OK;
1.1 www 267: }
1.7 www 268:
269: 1;
270: __END__
1.10 harris41 271:
272: =head1 NAME
273:
274: Apache::lonupload - upload files into construction space
275:
276: =head1 SYNOPSIS
277:
278: Invoked by /etc/httpd/conf/srm.conf:
279:
280: <Location /adm/upload>
281: PerlAccessHandler Apache::lonacc
282: SetHandler perl-script
283: PerlHandler Apache::lonupload
284: ErrorDocument 403 /adm/login
285: ErrorDocument 404 /adm/notfound.html
286: ErrorDocument 406 /adm/unauthorized.html
287: ErrorDocument 500 /adm/errorhandler
288: </Location>
289:
290: =head1 INTRODUCTION
291:
292: This module uploads a file sitting on a client computer into
293: library server construction space.
294:
295: This is part of the LearningOnline Network with CAPA project
296: described at http://www.lon-capa.org.
297:
298: =head1 HANDLER SUBROUTINE
299:
300: This routine is called by Apache and mod_perl.
301:
302: =over 4
303:
304: =item *
305:
306: Initialize variables
307:
308: =item *
309:
310: Start page output
311:
312: =item *
313:
314: output relevant interface phase (phaseone or phasetwo)
315:
316: =item *
317:
318: (phase one is to specify upload file; phase two is to handle conditions
319: subsequent to specification--like overwriting an existing file)
320:
321: =back
322:
323: =head1 OTHER SUBROUTINES
324:
325: =over 4
326:
327: =item *
328:
329: phaseone() : Interface for specifying file to upload.
330:
331: =item *
332:
333: phasetwo() : Interface for handling post-conditions about uploading (such
334: as overwriting an existing file).
335:
336: =item *
337:
338: upfile_store() : Store contents of uploaded file into temporary space. Invoked
339: by phaseone subroutine.
340:
341: =back
342:
343: =cut
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