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 1.10 2002/05/27 03:18:46 foxr 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 $conspace='/home/'.$uname.'/public_html'.$fn;
143:
144: $r->print('<form action=/adm/cfile method=post>'.
145: '<input type=hidden name=filename value="/~'.$uname.$fn.'">'.
146: '<input type=hidden name=phase value=two>'.
147: '<input type=hidden name=action value='.$ENV{'form.action'}.'>');
148:
149: if ($ENV{'form.action'} eq 'rename') {
150: if (-e $conspace) {
151: if ($ENV{'form.newfilename'}) {
152: $r->print(&checksuffix($fn,$ENV{'form.newfilename'}));
153: $r->print(&exists($uname,$udom,$dir,$ENV{'form.newfilename'}));
154: $r->print('<input type=hidden name=newfilename value="'.
155: $ENV{'form.newfilename'}.
156: '"><p>Rename <tt>'.$fn.'</tt> to <tt>'.
157: $dir.'/'.$ENV{'form.newfilename'}.'</tt>?</p>');
158: } else {
159: $r->print('<p>No new filename specified.</p></form>');
160: return;
161: }
162: } else {
163: $r->print('<p>No such file.</p></form>');
164: return;
165: }
166: } elsif ($ENV{'form.action'} eq 'delete') {
167: if (-e $conspace) {
168: $r->print('<p>Delete <tt>'.$fn.'</tt>?</p>');
169: } else {
170: $r->print('<p>No such file.</p></form>');
171: return;
172: }
173: } elsif ($ENV{'form.action'} eq 'copy') {
174: if (-e $conspace) {
175: if ($ENV{'form.newfilename'}) {
176: $r->print(&checksuffix($fn,$ENV{'form.newfilename'}));
177: $r->print(&exists($uname,$udom,$dir,$ENV{'form.newfilename'}));
178: $r->print('<input type=hidden name=newfilename value="'.
179: $ENV{'form.newfilename'}.
180: '"><p>Copy <tt>'.$fn.'</tt> to <tt>'.
181: $dir.'/'.$ENV{'form.newfilename'}.'</tt>?</p>');
182: } else {
183: $r->print('<p>No new filename specified.</p></form>');
184: return;
185: }
186: } else {
187: $r->print('<p>No such file.</p></form>');
188: return;
189: }
190: } elsif ($ENV{'form.action'} eq 'newdir') {
191: my $newdir='/home/'.$uname.'/public_html/'.
192: $fn.$ENV{'form.newfilename'};
193: if (-e $newdir) {
194: $r->print('<p>Directory exists.</p></form>');
195: return;
196: }
197: $r->print('<input type=hidden name=newfilename value="'.
198: $ENV{'form.newfilename'}.
199: '"><p>Make new directory <tt>'.
200: $fn.$ENV{'form.newfilename'}.'</tt>?</p>');
201:
202: }
203: $r->print('<p><input type=submit value=Continue></p></form>');
204: $r->print('<form action="/priv/'.$uname.$fn.
205: '" method="GET"><p><input type=submit value=Cancel></p></form>');
206:
207: }
208:
209: sub phasetwo {
210: my ($r,$fn,$uname,$udom)=@_;
211:
212: &Debug($r, "loncfile - Entering phase 2 for $fn");
213:
214: $fn=~/(.*)\/([^\/]+)\.(\w+)$/;
215: my $dir=$1;
216: my $main=$2;
217: my $suffix=$3;
218:
219:
220: &Debug($r, "loncfile::phase2 dir = $dir main = $main suffix = $suffix");
221:
222: my $conspace=$fn;
223:
224: &Debug($r, "loncfile::phase2 Full construction space name: $conspace");
225:
226: &Debug($r, "loncfie::phase2 action is $ENV{'form.action'}");
227:
228: if ($ENV{'form.action'} eq 'rename') {
229: if (-e $conspace) {
230: if ($ENV{'form.newfilename'}) {
231: unless (rename('/home/'.$uname.'/public_html'.$fn,
232: '/home/'.$uname.'/public_html'.$dir.'/'.$ENV{'form.newfilename'})) {
233: $r->print('<font color=red>Error: '.$!.'</font>');
234: }
235: }
236: } else {
237: $r->print('<p>No such file.</form>');
238: return;
239: }
240: } elsif ($ENV{'form.action'} eq 'delete') {
241: if (-e $conspace) {
242: unless (unlink('/home/'.$uname.'/public_html'.$fn)) {
243: $r->print('<font color=red>Error: '.$!.'</font>');
244: }
245: } else {
246: $r->print('<p>No such file.</form>');
247: return;
248: }
249: } elsif ($ENV{'form.action'} eq 'copy') {
250: if (-e $conspace) {
251: if ($ENV{'form.newfilename'}) {
252: unless (copy('/home/'.$uname.'/public_html'.$fn,
253: '/home/'.$uname.'/public_html'.$dir.'/'.$ENV{'form.newfilename'})) {
254: $r->print('<font color=red>Error: '.$!.'</font>');
255: }
256: } else {
257: $r->print('<p>No new filename specified.</form>');
258: return;
259: }
260: } else {
261: $r->print('<p>No such file.</form>');
262: return;
263: }
264: } elsif ($ENV{'form.action'} eq 'newdir') {
265: my $newdir= $fn.$ENV{'form.newfilename'};
266:
267: &Debug($r, "loncfile::phasetwo - new directory name: $newdir");
268:
269: unless (mkdir($newdir,0770)) {
270: $r->print('<font color=red>Error: '.$!.'</font>');
271: &Debug($r, "loncfile::phasetwo - mkdir failed $!");
272: }
273: &Debug($r, "Done button: uname = $uname, dir = $dir, fn = $fn");
274: my $url = '/priv/'.$uname.$newdir.'/';
275: &Debug($r, "URL[1] = ".$url);
276: $url =~ s/\/home\/$uname\/public_html//o;
277: &Debug($r, "URL = ".$url);
278:
279: $r->print('<h3><a href="'.$url.'">Done</a></h3>');
280: return;
281: }
282: $r->print('<h3><a href="/priv/'.$uname.$dir.'/">Done</a></h3>');
283: }
284:
285: sub handler {
286:
287: $r=shift;
288:
289:
290: &Debug($r, "loncfile.pm - handler entered");
291:
292: my $fn;
293:
294: if ($ENV{'form.filename'}) {
295: $fn=$ENV{'form.filename'};
296: &Debug($r, "loncfile::handler - raw url: $fn");
297: # $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
298: # $fn=~s/^http\:\/\/[^\/]+//;
299: $fn=URLToPath($fn);
300: &Debug($r, "loncfile::handler - doctored url: $fn");
301:
302: } else {
303: &Debug($r, "loncfile::handler - no form.filename");
304: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
305: ' unspecified filename for cfile', $r->filename);
306: return HTTP_NOT_FOUND;
307: }
308:
309: unless ($fn) {
310: &Debug($r, "loncfile::handler - doctored url is empty");
311: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
312: ' trying to cfile non-existing file', $r->filename);
313: return HTTP_NOT_FOUND;
314: }
315:
316: # ----------------------------------------------------------- Start page output
317: my $uname;
318: my $udom;
319:
320: ($uname,$udom)=
321: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
322: &Debug($r,
323: "loncfile::handler constructaccess uname = $uname domain = $udom");
324: unless (($uname) && ($udom)) {
325: $r->log_reason($uname.' at '.$udom.
326: ' trying to manipulate file '.$ENV{'form.filename'}.
327: ' ('.$fn.') - not authorized',
328: $r->filename);
329: return HTTP_NOT_ACCEPTABLE;
330: }
331:
332: $fn=~s/\/\~(\w+)//;
333: &Debug($r, "loncfile::handler ~ removed filename: $fn");
334:
335: $r->content_type('text/html');
336: $r->send_http_header;
337:
338: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
339:
340: $r->print(
341: '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
342:
343:
344: $r->print('<h1>Construction Space <tt>'.$fn.'</tt></h1>');
345:
346: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
347: $r->print('<h3><font color=red>Co-Author: '.$uname.' at '.$udom.
348: '</font></h3>');
349: }
350:
351:
352: &Debug($r, "loncfile::handler Form action is $ENV{'form.action'} ");
353: if ($ENV{'form.action'} eq 'delete') {
354:
355: $r->print('<h3>Delete</h3>');
356: } elsif ($ENV{'form.action'} eq 'rename') {
357: $r->print('<h3>Rename</h3>');
358: } elsif ($ENV{'form.action'} eq 'newdir') {
359: $r->print('<h3>New Directory</h3>');
360: } elsif ($ENV{'form.action'} eq 'copy') {
361: $r->print('<h3>Copy</h3>');
362: } else {
363: $r->print('<p>Unknown Action</body></html>');
364: return OK;
365: }
366: if ($ENV{'form.phase'} eq 'two') {
367: &Debug($r, "loncfile::handler entering phase2");
368: &phasetwo($r,$fn,$uname,$udom);
369: } else {
370: &Debug($r, "loncfile::handler entering phase1");
371: &phaseone($r,$fn,$uname,$udom);
372: }
373:
374: $r->print('</body></html>');
375: return OK;
376: }
377:
378: 1;
379: __END__
380:
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