1: # The LearningOnline Network with CAPA
2: # Handler to rename files, etc, in construction space
3: #
4: # This file responds to the various buttons and events
5: # in the top frame of the construction space directory.
6: # Each event is processed in two phases. The first phase
7: # presents a page that describes the proposed action to the user
8: # and requests confirmation. The second phase commits the action
9: # and displays a page showing the results of the action.
10: #
11:
12: #
13: # $Id: loncfile.pm,v 1.11 2002/06/07 01:35:48 albertel Exp $
14: #
15: # Copyright Michigan State University Board of Trustees
16: #
17: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
18: #
19: # LON-CAPA is free software; you can redistribute it and/or modify
20: # it under the terms of the GNU General Public License as published by
21: # the Free Software Foundation; either version 2 of the License, or
22: # (at your option) any later version.
23: #
24: # LON-CAPA is distributed in the hope that it will be useful,
25: # but WITHOUT ANY WARRANTY; without even the implied warranty of
26: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27: # GNU General Public License for more details.
28: #
29: # You should have received a copy of the GNU General Public License
30: # along with LON-CAPA; if not, write to the Free Software
31: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32: #
33: # /home/httpd/html/adm/gpl.txt
34: #
35: # http://www.lon-capa.org/
36: #
37: #
38: # (Handler to retrieve an old version of a file
39: #
40: # (Publication Handler
41: #
42: # (TeX Content Handler
43: #
44: # 05/29/00,05/30,10/11 Gerd Kortemeyer)
45: #
46: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
47: # 03/23 Guy Albertelli
48: # 03/24,03/29 Gerd Kortemeyer)
49: #
50: # 03/31,04/03,05/02,05/09,06/23,06/24 Gerd Kortemeyer)
51: #
52: # 06/23 Gerd Kortemeyer
53: # 05/07/02 Ron Fox:
54: # - Added Debug log output so that I can trace what the heck this
55: # undocumented thingy does.
56:
57: package Apache::loncfile;
58:
59: use strict;
60: use Apache::File;
61: use File::Copy;
62: use Apache::Constants qw(:common :http :methods);
63: use Apache::loncacc;
64: use Apache::Log ();
65:
66: my $DEBUG=0;
67: my $r; # Needs to be global for some stuff RF.
68: #
69: # Debug
70: # If debugging is enabled puts out a debuggin message determined by the
71: # caller. The debug message goes to the Apache error log file.
72: #
73: # Parameters:
74: # r - Apache request [in]
75: # message - String [in]
76: # Returns:
77: # nothing.
78: sub Debug {
79: my $r = shift;
80: my $log = $r->log;
81: my $message = shift;
82: if ($DEBUG) {
83: $log->debug($message);
84: }
85: }
86: #
87: # URLToPath
88: # Convert a URL to a file system path.
89: #
90: # In order to manipulate the construction space objects, it's necessary
91: # to access url identified objects a filespace objects. This function
92: # translates a construction space URL to a file system path.
93: # Parameters:
94: # Url - string [in] The url to convert.
95: # Returns:
96: # The corresponing file system path.
97: sub URLToPath
98: {
99: my $Url = shift;
100: &Debug($r, "UrlToPath got: $Url");
101: $Url=~ s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
102: $Url=~ s/^http\:\/\/[^\/]+//;
103: &Debug($r, "Returning $Url \n");
104: return $Url;
105: }
106: sub exists {
107: my ($uname,$udom,$dir,$newfile)=@_;
108: my $published='/home/httpd/html/res/'.$udom.'/'.$uname.'/'.$dir.'/'.
109: $ENV{'form.newfilename'};
110: my $construct='/home/'.$uname.'/public_html/'.$dir.'/'.
111: $ENV{'form.newfilename'};
112: my $result;
113: if (-e $published) {
114: $result.='<p><font color=red>Warning: target file exists, and has been published!</font></p>';
115: } elsif ( -e $construct ) {
116: $result.='<p><font color=red>Warning: target file exists!</font></p>';
117: }
118: return $result;
119: }
120:
121: sub checksuffix {
122: my ($old,$new) = @_;
123: my $result;
124: my $oldsuffix;
125: my $newsuffix;
126: if ($new=~m:(.*/*)([^/]+)\.(\w+)$:) { $newsuffix=$3; }
127: if ($old=~m:(.*)/+([^/]+)\.(\w+)$:) { $oldsuffix=$3; }
128: if ($oldsuffix ne $newsuffix) {
129: $result.='<p><font color=red>Warning: change of MIME type!</font></p>';
130: }
131: return $result;
132: }
133:
134: sub phaseone {
135: my ($r,$fn,$uname,$udom)=@_;
136:
137: $fn=~m:(.*)/([^/]+)\.(\w+)$:;
138: my $dir=$1;
139: my $main=$2;
140: my $suffix=$3;
141:
142: my $conspace;
143: if ($fn =~ m-^/home/-) {
144: $conspace=$fn;
145: } else {
146: $conspace='/home/'.$uname.'/public_html'.$fn;
147: }
148:
149: $r->print('<form action=/adm/cfile method=post>'.
150: '<input type=hidden name=filename value="/~'.$uname.$fn.'">'.
151: '<input type=hidden name=phase value=two>'.
152: '<input type=hidden name=action value='.$ENV{'form.action'}.'>');
153:
154: if ($ENV{'form.action'} eq 'rename') {
155: if (-e $conspace) {
156: if ($ENV{'form.newfilename'}) {
157: $r->print(&checksuffix($fn,$ENV{'form.newfilename'}));
158: $r->print(&exists($uname,$udom,$dir,$ENV{'form.newfilename'}));
159: $r->print('<input type=hidden name=newfilename value="'.
160: $ENV{'form.newfilename'}.
161: '"><p>Rename <tt>'.$fn.'</tt> to <tt>'.
162: $dir.'/'.$ENV{'form.newfilename'}.'</tt>?</p>');
163: } else {
164: $r->print('<p>No new filename specified.</p></form>');
165: return;
166: }
167: } else {
168: $r->print('<p>No such file.</p></form>');
169: return;
170: }
171: } elsif ($ENV{'form.action'} eq 'delete') {
172: if (-e $conspace) {
173: $r->print('<p>Delete <tt>'.$fn.'</tt>?</p>');
174: } else {
175: $r->print('<p>No such file.</p></form>');
176: return;
177: }
178: } elsif ($ENV{'form.action'} eq 'copy') {
179: if (-e $conspace) {
180: if ($ENV{'form.newfilename'}) {
181: $r->print(&checksuffix($fn,$ENV{'form.newfilename'}));
182: $r->print(&exists($uname,$udom,$dir,$ENV{'form.newfilename'}));
183: $r->print('<input type=hidden name=newfilename value="'.
184: $ENV{'form.newfilename'}.
185: '"><p>Copy <tt>'.$fn.'</tt> to <tt>'.
186: $dir.'/'.$ENV{'form.newfilename'}.'</tt>?</p>');
187: } else {
188: $r->print('<p>No new filename specified.</p></form>');
189: return;
190: }
191: } else {
192: $r->print('<p>No such file.</p></form>');
193: return;
194: }
195: } elsif ($ENV{'form.action'} eq 'newdir') {
196: my $newdir='/home/'.$uname.'/public_html/'.
197: $fn.$ENV{'form.newfilename'};
198: if (-e $newdir) {
199: $r->print('<p>Directory exists.</p></form>');
200: return;
201: }
202: $r->print('<input type=hidden name=newfilename value="'.
203: $ENV{'form.newfilename'}.
204: '"><p>Make new directory <tt>'.
205: $fn.$ENV{'form.newfilename'}.'</tt>?</p>');
206:
207: }
208: $r->print('<p><input type=submit value=Continue></p></form>');
209: $r->print('<form action="/priv/'.$uname.$fn.
210: '" method="GET"><p><input type=submit value=Cancel></p></form>');
211:
212: }
213:
214: sub phasetwo {
215: my ($r,$fn,$uname,$udom)=@_;
216:
217: &Debug($r, "loncfile - Entering phase 2 for $fn");
218:
219: $fn=~/(.*)\/([^\/]+)\.(\w+)$/;
220: my $dir=$1;
221: my $main=$2;
222: my $suffix=$3;
223: $dir =~ s-^/[^/]*/[^/]*/[^/]*--;
224:
225:
226: &Debug($r, "loncfile::phase2 dir = $dir main = $main suffix = $suffix");
227:
228: my $conspace=$fn;
229:
230: &Debug($r, "loncfile::phase2 Full construction space name: $conspace");
231:
232: &Debug($r, "loncfie::phase2 action is $ENV{'form.action'}");
233:
234: if ($ENV{'form.action'} eq 'rename') {
235: if (-e $conspace) {
236: if ($ENV{'form.newfilename'}) {
237: unless (rename($fn,
238: '/home/'.$uname.'/public_html'.$dir.'/'.$ENV{'form.newfilename'})) {
239: $r->print('<font color=red>Error: '.$!.'</font>');
240: }
241: }
242: } else {
243: $r->print('<p>No such file.</form>');
244: return;
245: }
246: } elsif ($ENV{'form.action'} eq 'delete') {
247: if (-e $conspace) {
248: unless (unlink($fn)) {
249: $r->print('<font color=red>Error: '.$!.'</font>');
250: }
251: } else {
252: $r->print('<p>No such file.</form>');
253: return;
254: }
255: } elsif ($ENV{'form.action'} eq 'copy') {
256: if (-e $conspace) {
257: if ($ENV{'form.newfilename'}) {
258: unless (copy($fn,
259: '/home/'.$uname.'/public_html'.$dir.'/'.$ENV{'form.newfilename'})) {
260: $r->print('<font color=red>Error: '.$!.'</font>');
261: }
262: } else {
263: $r->print('<p>No new filename specified.</form>');
264: return;
265: }
266: } else {
267: $r->print('<p>No such file.</form>');
268: return;
269: }
270: } elsif ($ENV{'form.action'} eq 'newdir') {
271: my $newdir= $fn.$ENV{'form.newfilename'};
272:
273: &Debug($r, "loncfile::phasetwo - new directory name: $newdir");
274:
275: unless (mkdir($newdir,0770)) {
276: $r->print('<font color=red>Error: '.$!.'</font>');
277: &Debug($r, "loncfile::phasetwo - mkdir failed $!");
278: }
279: &Debug($r, "Done button: uname = $uname, dir = $dir, fn = $fn");
280: my $url = '/priv/'.$uname.$newdir.'/';
281: &Debug($r, "URL[1] = ".$url);
282: $url =~ s/\/home\/$uname\/public_html//o;
283: &Debug($r, "URL = ".$url);
284:
285: $r->print('<h3><a href="'.$url.'">Done</a></h3>');
286: return;
287: }
288: $r->print('<h3><a href="/priv/'.$uname.$dir.'/">Done</a></h3>');
289: }
290:
291: sub handler {
292:
293: $r=shift;
294:
295:
296: &Debug($r, "loncfile.pm - handler entered");
297:
298: my $fn;
299:
300: if ($ENV{'form.filename'}) {
301: $fn=$ENV{'form.filename'};
302: &Debug($r, "loncfile::handler - raw url: $fn");
303: # $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
304: # $fn=~s/^http\:\/\/[^\/]+//;
305: $fn=URLToPath($fn);
306: &Debug($r, "loncfile::handler - doctored url: $fn");
307:
308: } else {
309: &Debug($r, "loncfile::handler - no form.filename");
310: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
311: ' unspecified filename for cfile', $r->filename);
312: return HTTP_NOT_FOUND;
313: }
314:
315: unless ($fn) {
316: &Debug($r, "loncfile::handler - doctored url is empty");
317: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
318: ' trying to cfile non-existing file', $r->filename);
319: return HTTP_NOT_FOUND;
320: }
321:
322: # ----------------------------------------------------------- Start page output
323: my $uname;
324: my $udom;
325:
326: ($uname,$udom)=
327: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
328: &Debug($r,
329: "loncfile::handler constructaccess uname = $uname domain = $udom");
330: unless (($uname) && ($udom)) {
331: $r->log_reason($uname.' at '.$udom.
332: ' trying to manipulate file '.$ENV{'form.filename'}.
333: ' ('.$fn.') - not authorized',
334: $r->filename);
335: return HTTP_NOT_ACCEPTABLE;
336: }
337:
338: $fn=~s/\/\~(\w+)//;
339: &Debug($r, "loncfile::handler ~ removed filename: $fn");
340:
341: $r->content_type('text/html');
342: $r->send_http_header;
343:
344: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
345:
346: $r->print(
347: '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
348:
349:
350: $r->print('<h1>Construction Space <tt>'.$fn.'</tt></h1>');
351:
352: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
353: $r->print('<h3><font color=red>Co-Author: '.$uname.' at '.$udom.
354: '</font></h3>');
355: }
356:
357:
358: &Debug($r, "loncfile::handler Form action is $ENV{'form.action'} ");
359: if ($ENV{'form.action'} eq 'delete') {
360:
361: $r->print('<h3>Delete</h3>');
362: } elsif ($ENV{'form.action'} eq 'rename') {
363: $r->print('<h3>Rename</h3>');
364: } elsif ($ENV{'form.action'} eq 'newdir') {
365: $r->print('<h3>New Directory</h3>');
366: } elsif ($ENV{'form.action'} eq 'copy') {
367: $r->print('<h3>Copy</h3>');
368: } else {
369: $r->print('<p>Unknown Action</body></html>');
370: return OK;
371: }
372: if ($ENV{'form.phase'} eq 'two') {
373: &Debug($r, "loncfile::handler entering phase2");
374: &phasetwo($r,$fn,$uname,$udom);
375: } else {
376: &Debug($r, "loncfile::handler entering phase1");
377: &phaseone($r,$fn,$uname,$udom);
378: }
379:
380: $r->print('</body></html>');
381: return OK;
382: }
383:
384: 1;
385: __END__
386:
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