Annotation of loncom/publisher/lonupload.pm, revision 1.15
1.12 foxr 1:
1.1 www 2: # The LearningOnline Network with CAPA
3: # Handler to upload files into construction space
4: #
1.15 ! harris41 5: # $Id: lonupload.pm,v 1.14 2002/09/10 02:31:26 foxr 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: #
1.1 www 29: # (Handler to retrieve an old version of a file
30: #
31: # (Publication Handler
32: #
33: # (TeX Content Handler
34: #
1.10 harris41 35: # YEAR=2000
1.1 www 36: # 05/29/00,05/30,10/11 Gerd Kortemeyer)
37: #
38: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
1.10 harris41 39: # YEAR=2001
1.1 www 40: # 03/23 Guy Albertelli
41: # 03/24,03/29 Gerd Kortemeyer)
42: #
43: # 03/31,04/03 Gerd Kortemeyer)
44: #
1.7 www 45: # 04/05,04/09,05/25,06/23,06/24,08/22 Gerd Kortemeyer
1.8 matthew 46: # 11/29 Matthew Hall
1.10 harris41 47: #
48: ###
1.1 www 49:
50: package Apache::lonupload;
51:
52: use strict;
53: use Apache::File;
54: use File::Copy;
1.13 foxr 55: use File::Basename;
1.1 www 56: use Apache::Constants qw(:common :http :methods);
1.3 www 57: use Apache::loncacc;
1.10 harris41 58: use Apache::loncommon();
1.12 foxr 59: use Apache::Log();
1.13 foxr 60: use Apache::lonnet;
1.14 foxr 61: use HTML::Entities();
1.12 foxr 62:
63: my $DEBUG=0;
64:
65: sub Debug {
66:
67: # Marshall the parameters.
68:
69: my $r = shift;
70: my $log = $r->log;
71: my $message = shift;
72:
73: # Put out the indicated message butonly if DEBUG is false.
74:
75: if ($DEBUG) {
76: $log->debug($message);
77: }
78: }
1.1 www 79:
1.2 www 80: sub upfile_store {
81: my $r=shift;
82:
83: my $fname=$ENV{'form.upfile.filename'};
84: $fname=~s/\W//g;
85:
86: chop($ENV{'form.upfile'});
1.1 www 87:
1.2 www 88: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
89: '_upload_'.$fname.'_'.time.'_'.$$;
90: {
91: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
92: '/tmp/'.$datatoken.'.tmp');
93: print $fh $ENV{'form.upfile'};
1.1 www 94: }
1.2 www 95: return $datatoken;
96: }
97:
98:
99: sub phaseone {
1.5 www 100: my ($r,$fn,$uname,$udom)=@_;
1.6 www 101: $ENV{'form.upfile.filename'}=~s/\\/\//g;
102: $ENV{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
1.5 www 103: if ($ENV{'form.upfile.filename'}) {
1.2 www 104: $fn=~s/\/[^\/]+$//;
105: $fn=~s/([^\/])$/$1\//;
106: $fn.=$ENV{'form.upfile.filename'};
1.3 www 107: $fn=~s/^\///;
108: $fn=~s/(\/)+/\//g;
1.13 foxr 109:
110: # Fn is the full path to the destination filename.
111: #
112:
1.12 foxr 113: &Debug($r, "Filename for upload: $fn");
1.3 www 114: if (($fn) && ($fn!~/\/$/)) {
115: $r->print(
1.2 www 116: '<form action=/adm/upload method=post>'.
117: '<input type=hidden name=phase value=two>'.
118: '<input type=hidden name=datatoken value="'.&upfile_store.'">'.
119: 'Store uploaded file as '.
1.3 www 120: '<input type=text size=50 name=filename value="/priv/'.
121: $uname.'/'.$fn.'"><br>'.
1.2 www 122: '<input type=submit value="Store"></form>');
1.9 matthew 123: # Check for bad extension and warn user
1.8 matthew 124: if ($fn=~/\.(\w+)$/ &&
1.10 harris41 125: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
1.8 matthew 126: $r->print(
127: '<font color=red>'.
128: 'The extension on this file, "'.$1.
129: '", is reserved internally by LON-CAPA. <br \>'.
130: 'Please change the extension.'.
131: '</font>');
1.9 matthew 132: } elsif($fn=~/\.(\w+)$/ &&
1.10 harris41 133: !defined(&Apache::loncommon::fileembstyle($1))) {
1.9 matthew 134: $r->print(
135: '<font color=red>'.
136: 'The extension on this file, "'.$1.
137: '", is not recognized by LON-CAPA. <br \>'.
138: 'Please change the extension.'.
139: '</font>');
140: }
1.3 www 141: } else {
142: $r->print('<font color=red>Illegal filename.</font>');
143: }
1.5 www 144: } else {
145: $r->print('<font color=red>No upload file specified.</font>');
146: }
1.1 www 147: }
148:
149: sub phasetwo {
1.4 www 150: my ($r,$fn,$uname,$udom)=@_;
1.13 foxr 151: &Debug($r, "Filename is ".$fn);
152: if ($fn=~/^\/priv\/$uname\//) {
153: &Debug($r, "Filename after priv substitution: ".$fn);
1.3 www 154: my $tfn=$fn;
155: $tfn=~s/^\/(\~|priv)\/(\w+)//;
1.13 foxr 156: &Debug($r, "Filename for tfn = ".$tfn);
1.3 www 157: my $target='/home/'.$uname.'/public_html'.$tfn;
1.13 foxr 158: &Debug($r, "target -> ".$target);
159: # target is the full filesystem path of the destination file.
160: my $base = &File::Basename::basename($fn);
161: my $path = &File::Basename::dirname($fn);
1.14 foxr 162: $base = &HTML::Entities::encode($base);
1.13 foxr 163: my $url = $path."/".$base;
164: &Debug($r, "URL is now ".$url);
1.2 www 165: my $datatoken=$ENV{'form.datatoken'};
166: if (($fn) && ($datatoken)) {
167: if ((-e $target) && ($ENV{'form.override'} ne 'Yes')) {
168: $r->print(
169: '<form action=/adm/upload method=post>'.
170: 'File <tt>'.$fn.'</tt> exists. Overwrite? '.
171: '<input type=hidden name=phase value=two>'.
1.13 foxr 172: '<input type=hidden name=filename value="'."$url".'">'.
1.2 www 173: '<input type=hidden name=datatoken value="'.$datatoken.'">'.
174: '<input type=submit name=override value="Yes"></form>');
175: } else {
176: my $source=$r->dir_config('lonDaemons').
177: '/tmp/'.$datatoken.'.tmp';
1.9 matthew 178: # Check for bad extension and disallow upload
1.8 matthew 179: if ($fn=~/\.(\w+)$/ &&
1.10 harris41 180: (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
1.8 matthew 181: $r->print(
182: 'File <tt>'.$fn.'</tt> could not be copied.<br />'.
183: '<font color=red>'.
184: 'The extension on this file is reserved internally by LON-CAPA.'.
1.9 matthew 185: '</font>');
186: } elsif ($fn=~/\.(\w+)$/ &&
1.10 harris41 187: !defined(&Apache::loncommon::fileembstyle($1))) {
1.9 matthew 188: $r->print(
189: 'File <tt>'.$fn.'</tt> could not be copied.<br />'.
190: '<font color=red>'.
191: 'The extension on this file is not recognized by LON-CAPA.'.
1.8 matthew 192: '</font>');
193: } elsif (copy($source,$target)) {
1.11 foxr 194: chmod(0660, $target); # Set permissions to rw-rw---.
1.2 www 195: $r->print('File copied.');
1.13 foxr 196: $r->print('<p><font size=+2><a href="'.$url.
1.2 www 197: '">View file</a></font>');
198: } else {
199: $r->print('Failed to copy: '.$!);
200: }
201: }
1.1 www 202: } else {
203: $r->print(
1.2 www 204: '<font size=+1 color=red>Please pick a filename</font><p>');
1.1 www 205: &phaseone($r,$fn,$uname,$udom);
206: }
1.4 www 207: } else {
208: $r->print(
209: '<font size=+1 color=red>Please pick a filename</font><p>');
210: &phaseone($r,$fn,$uname,$udom);
211: }
1.1 www 212: }
213:
1.10 harris41 214: # ---------------------------------------------------------------- Main Handler
1.1 www 215: sub handler {
216:
217: my $r=shift;
218:
1.3 www 219: my $uname;
220: my $udom;
221:
1.5 www 222: ($uname,$udom)=
1.3 www 223: &Apache::loncacc::constructaccess(
1.5 www 224: $ENV{'form.filename'},$r->dir_config('lonDefDomain'));
225: unless (($uname) && ($udom)) {
1.3 www 226: $r->log_reason($uname.' at '.$udom.
227: ' trying to publish file '.$ENV{'form.filename'}.
228: ' - not authorized',
229: $r->filename);
230: return HTTP_NOT_ACCEPTABLE;
231: }
232:
1.1 www 233: my $fn;
234:
235: if ($ENV{'form.filename'}) {
236: $fn=$ENV{'form.filename'};
1.3 www 237: $fn=~s/^http\:\/\/[^\/]+\/(\~|priv\/)(\w+)//;
1.1 www 238: } else {
239: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1.2 www 240: ' unspecified filename for upload', $r->filename);
1.1 www 241: return HTTP_NOT_FOUND;
242: }
243:
244: # ----------------------------------------------------------- Start page output
245:
246:
247: $r->content_type('text/html');
248: $r->send_http_header;
249:
250: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
251:
252: $r->print(
253: '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
254:
255:
1.2 www 256: $r->print('<h1>Upload file to Construction Space</h1>');
1.3 www 257:
258: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
259: $r->print('<h3><font color=red>Co-Author: '.$uname.' at '.$udom.
260: '</font></h3>');
261: }
262:
1.1 www 263:
264: if ($ENV{'form.phase'} eq 'two') {
265: &phasetwo($r,$fn,$uname,$udom);
266: } else {
267: &phaseone($r,$fn,$uname,$udom);
268: }
269:
270: $r->print('</body></html>');
271: return OK;
272: }
1.7 www 273:
274: 1;
275: __END__
1.10 harris41 276:
277: =head1 NAME
278:
279: Apache::lonupload - upload files into construction space
280:
281: =head1 SYNOPSIS
282:
283: Invoked by /etc/httpd/conf/srm.conf:
284:
285: <Location /adm/upload>
286: PerlAccessHandler Apache::lonacc
287: SetHandler perl-script
288: PerlHandler Apache::lonupload
289: ErrorDocument 403 /adm/login
290: ErrorDocument 404 /adm/notfound.html
291: ErrorDocument 406 /adm/unauthorized.html
292: ErrorDocument 500 /adm/errorhandler
293: </Location>
294:
295: =head1 INTRODUCTION
296:
297: This module uploads a file sitting on a client computer into
298: library server construction space.
299:
300: This is part of the LearningOnline Network with CAPA project
301: described at http://www.lon-capa.org.
302:
303: =head1 HANDLER SUBROUTINE
304:
305: This routine is called by Apache and mod_perl.
306:
307: =over 4
308:
309: =item *
310:
311: Initialize variables
312:
313: =item *
314:
315: Start page output
316:
317: =item *
318:
319: output relevant interface phase (phaseone or phasetwo)
320:
321: =item *
322:
323: (phase one is to specify upload file; phase two is to handle conditions
324: subsequent to specification--like overwriting an existing file)
325:
326: =back
327:
328: =head1 OTHER SUBROUTINES
329:
330: =over 4
331:
332: =item *
333:
334: phaseone() : Interface for specifying file to upload.
335:
336: =item *
337:
338: phasetwo() : Interface for handling post-conditions about uploading (such
339: as overwriting an existing file).
340:
341: =item *
342:
343: upfile_store() : Store contents of uploaded file into temporary space. Invoked
344: by phaseone subroutine.
345:
346: =back
347:
348: =cut
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