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: # $Id: loncfile.pm,v 1.27 2003/02/12 19:56:14 albertel Exp $
13: #
14: # Copyright Michigan State University Board of Trustees
15: #
16: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
17: #
18: # LON-CAPA is free software; you can redistribute it and/or modify
19: # it under the terms of the GNU General Public License as published by
20: # the Free Software Foundation; either version 2 of the License, or
21: # (at your option) any later version.
22: #
23: # LON-CAPA is distributed in the hope that it will be useful,
24: # but WITHOUT ANY WARRANTY; without even the implied warranty of
25: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26: # GNU General Public License for more details.
27: #
28: # You should have received a copy of the GNU General Public License
29: # along with LON-CAPA; if not, write to the Free Software
30: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31: #
32: # /home/httpd/html/adm/gpl.txt
33: #
34: # http://www.lon-capa.org/
35: #
36: #
37: # (Handler to retrieve an old version of a file
38: #
39: # (Publication Handler
40: #
41: # (TeX Content Handler
42: #
43: # 05/29/00,05/30,10/11 Gerd Kortemeyer)
44: #
45: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
46: # 03/23 Guy Albertelli
47: # 03/24,03/29 Gerd Kortemeyer)
48: #
49: # 03/31,04/03,05/02,05/09,06/23,06/24 Gerd Kortemeyer)
50: #
51: # 06/23 Gerd Kortemeyer
52: # 05/07/02 Ron Fox:
53: # - Added Debug log output so that I can trace what the heck this
54: # undocumented thingy does.
55: # 05/28/02 Ron Fox:
56: # - Started putting in pod in standard format.
57: =pod
58:
59: =head1 NAME
60:
61: Apache::loncfile - Construction space file management.
62:
63: =head1 SYNOPSIS
64:
65: Content handler for buttons on the top frame of the construction space
66: directory.
67:
68: =head1 INTRODUCTION
69:
70: loncfile is invoked when buttons in the top frame of the construction
71: space directory listing are clicked. All operations proceed in two phases.
72: The first phase describes to the user exactly what will be done. If the user
73: confirms the operation, the second phase commits the operation and indicates
74: completion. When the user dismisses the output of phase2, they are returned to
75: an "appropriate" directory listing in general.
76:
77: This is part of the LearningOnline Network with CAPA project
78: described at http://www.lon-capa.org.
79:
80: =head2 Subroutines
81:
82: =cut
83:
84: package Apache::loncfile;
85:
86: use strict;
87: use Apache::File;
88: use File::Basename;
89: use File::Copy;
90: use HTML::Entities();
91: use Apache::Constants qw(:common :http :methods);
92: use Apache::loncacc;
93: use Apache::Log ();
94: use Apache::lonnet;
95:
96: my $DEBUG=0;
97: my $r; # Needs to be global for some stuff RF.
98:
99: =pod
100:
101: =item Debug($request, $message)
102:
103: If debugging is enabled puts out a debugging message determined by the
104: caller. The debug message goes to the Apache error log file. Debugging
105: is enabled by setting the module global DEBUG variable to nonzero (TRUE).
106:
107: Parameters:
108:
109: =over 4
110:
111: =item $request - The current request operation.
112:
113: =item $message - The message to put in the log file.
114:
115: =back
116:
117: Returns:
118: nothing.
119:
120: =cut
121:
122: sub Debug {
123:
124: # Marshall the parameters.
125:
126: my $r = shift;
127: my $log = $r->log;
128: my $message = shift;
129:
130: # Put out the indicated message butonly if DEBUG is true.
131:
132: if ($DEBUG) {
133: $log->debug($message);
134: }
135: }
136:
137: =pod
138:
139: =item URLToPath($url)
140:
141: Convert a URL to a file system path.
142:
143: In order to manipulate the construction space objects, it is necessary
144: to access url identified objects a filespace objects. This function
145: translates a construction space URL to a file system path.
146: Parameters:
147:
148: =over 4
149:
150: =item Url - string [in] The url to convert.
151:
152: =back
153:
154: Returns:
155:
156: =over 4
157:
158: =item The corresponding file system path.
159:
160: =back
161:
162: Global References
163:
164: =over 4
165:
166: =item $r - Request object [in] Referenced in the &Debug calls.
167:
168: =back
169:
170: =cut
171:
172: sub URLToPath {
173: my $Url = shift;
174: &Debug($r, "UrlToPath got: $Url");
175: $Url=~ s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
176: $Url=~ s/^http\:\/\/[^\/]+//;
177: &Debug($r, "Returning $Url \n");
178: return $Url;
179: }
180:
181: =pod
182:
183: =item PublicationPath($domain, $user, $dir, $file)
184:
185: Determines the filesystem path corresponding to a published resource
186: specification. The returned value is the path.
187: Parameters:
188:
189: =over 4
190:
191: =item $domain - string [in] Name of the domain within which the resource is
192: stored.
193:
194: =item $user - string [in] Name of the user asking about the resource.
195:
196: =item $dir - Directory path relative to the top of the resource space.
197:
198: =item $file - name of the resource file itself without path info.
199:
200: =back
201:
202: =over 4
203:
204: Returns:
205:
206: =item string - full path to the file if it exists in publication space.
207:
208: =back
209:
210: =cut
211:
212: sub PublicationPath
213: {
214: my ($domain, $user, $dir, $file)=@_;
215:
216: return '/home/httpd/html/res/'.$domain.'/'.$user.'/'.$dir.'/'.
217: $file;
218: }
219:
220: =pod
221:
222: =item ConstructionPath($domain, $user, $dir, $file)
223:
224: Determines the filesystem path corresponding to a construction space
225: resource specification. The returned value is the path
226: Parameters:
227:
228: =over 4
229:
230: =item $user - string [in] Name of the user asking about the resource.
231:
232: =item $dir - Directory path relative to the top of the resource space.
233:
234: =item $file - name of the resource file itself without path info.
235:
236: Returns:
237:
238: =item string - full path to the file if it exists in Construction space.
239:
240: =back
241:
242: =cut
243:
244: sub ConstructionPath {
245: my ($user, $dir, $file) = @_;
246:
247: return '/home/'.$user.'/public_html/'.$dir.'/'.$file;
248:
249: }
250: =pod
251:
252: =item ConstructionPathFromRelative($user, $relname)
253:
254: Determines the path to a construction space file given
255: the username and the path relative to the root of construction space.
256:
257: Parameters:
258:
259: =over 4
260:
261: =item $user - string [in] Name of the user in whose construction space the
262: file [will] live.
263:
264: =item $relname - string[in] Path to the file relative to the root of the
265: construction space.
266:
267: =back
268:
269: Returns:
270:
271: =over 4
272:
273: =item string - Full path to the file.
274:
275: =back
276:
277: =cut
278:
279: sub ConstructionPathFromRelative {
280:
281: my ($user, $relname) = @_;
282: return '/home/'.$user.'/public_html'.$relname;
283:
284: }
285:
286: =pod
287:
288: =item exists($user, $domain, $directory, $file)
289:
290: Determine if a resource file name has been published or exists
291: in the construction space.
292:
293: Parameters:
294:
295: =over 4
296:
297: =item $user - string [in] - Name of the user for which to check.
298:
299: =item $domain - string [in] - Name of the domain in which the resource
300: might have been published.
301:
302: =item $dir - string [in] - Path relative to construction or resource space
303: in which the resource might live.
304:
305: =item $file - string [in] - Name of the file.
306:
307: =back
308:
309: Returns:
310:
311: =over 4
312:
313: =item string - Either where the resource exists as an html string that can
314: be embedded in a dialog or an empty string if the resource
315: does not exist.
316:
317: =back
318:
319: =cut
320:
321: sub exists {
322: my ($user, $domain, $dir, $file) = @_;
323:
324: # Create complete paths in publication and construction space.
325: my $relativedir=$dir;
326: $relativedir=s|/home/\Q$user\E/public_html||;
327: my $published = &PublicationPath($domain, $user, $relativedir, $file);
328: my $construct = &ConstructionPath($user, $relativedir, $file);
329:
330: # If the resource exists in either space indicate this fact.
331: # Note that the check for existence in resource space is stricter.
332:
333: my $result;
334: if ( -d $construct ) {
335: return 'Error: destination for operation is a directory.';
336: }
337: if ( -e $published) {
338: $result.='<p><font color="red">Warning: target file exists, and has been published!</font></p>';
339: }
340: elsif ( -e $construct) {
341: $result.='<p><font color="red">Warning: target file exists!</font></p>';
342: }
343:
344: return $result;
345:
346: }
347:
348: =pod
349:
350: =item checksuffix($old, $new)
351:
352: Determine if a resource filename suffix (the stuff after the .) would change
353: as a result of this operation.
354:
355: Parameters:
356:
357: =over 4
358:
359: =item $old = string [in] Previous filename.
360:
361: =item $new = string [in] Resultant filename.
362:
363: =back
364:
365: Returns:
366:
367: =over 4
368:
369: =item Empty string if everything worked.
370:
371: =item String containing an error message if there was a problem.
372:
373: =back
374:
375: =cut
376:
377: sub checksuffix {
378: my ($old,$new) = @_;
379: my $result;
380: my $oldsuffix;
381: my $newsuffix;
382: if ($new=~m:(.*/*)([^/]+)\.(\w+)$:) { $newsuffix=$3; }
383: if ($old=~m:(.*)/+([^/]+)\.(\w+)$:) { $oldsuffix=$3; }
384: if ($oldsuffix ne $newsuffix) {
385: $result.=
386: '<p><font color="red">Warning: change of MIME type!</font></p>';
387: }
388: return $result;
389: }
390: =pod
391:
392: =item CloseForm1($request, $user, $file)
393:
394: Close of a form on the successful completion of phase 1 processing
395:
396: Parameters:
397:
398: =over 4
399:
400: =item $request - Apache Request Object [in] - Apache server request object.
401:
402: =item $cancelurl - the url to go to on cancel.
403:
404: =back
405:
406: =cut
407:
408: sub CloseForm1 {
409: my ($request, $cancelurl) = @_;
410:
411:
412: &Debug($request, "Cancel url is: ".$cancelurl);
413: $request->print('<p><input type="submit" value="Continue" /></p></form>');
414: $request->print('<form action="'.$cancelurl.
415: '" method="GET"><p><input type="submit" value="Cancel" /></p></form>');
416:
417: }
418:
419:
420: =pod
421:
422: =item CloseForm2($request, $user, $directory)
423:
424: Successfully close off the phase 2 form.
425:
426: Parameters:
427:
428: =over 4
429:
430: =item $request - Apache Request object [in] - The request that is being
431: executed.
432:
433: =item $user - string [in] - Name of the user that is initiating the
434: request.
435:
436: =item $directory - string [in] - Directory in which the operation is
437: being done relative to the top level construction space
438: directory.
439:
440: =back
441:
442: =cut
443:
444: sub CloseForm2 {
445: my ($request, $user, $directory) = @_;
446:
447: $request->print('<h3><a href="/priv/'.$user.$directory.'/">Done </a> </h3>');
448: }
449:
450: =pod
451:
452: =item Rename1($request, $filename, $user, $domain, $dir)
453:
454: Perform phase 1 processing of the file rename operation.
455:
456: Parameters:
457:
458: =over 4
459:
460: =item $request - Apache Request Object [in] The request object for the
461: current request.
462:
463: =item $filename - The filename relative to construction space.
464:
465: =item $user - Name of the user making the request.
466:
467: =item $domain - User login domain.
468:
469: =item $dir - Directory specification of the path to the file.
470:
471: =back
472:
473: Side effects:
474:
475: =over 4
476:
477: =item A new form is displayed prompting for confirmation. The newfilename
478: hidden field of this form is loaded with
479: new filename relative to the current directory ($dir).
480:
481: =back
482:
483: =cut
484:
485: sub Rename1 {
486: my ($request, $filename, $user, $domain, $dir) = @_;
487: &Debug($request, "Username - ".$user." filename: ".$filename."\n");
488: my $conspace = $filename;
489:
490: my $cancelurl = "/priv/".$filename;
491: $cancelurl =~ s/\/home\///;
492: $cancelurl =~ s/\/public_html//;
493:
494: if(-e $conspace) {
495: if($ENV{'form.newfilename'}) {
496: my $newfilename = $ENV{'form.newfilename'};
497: if ($newfilename =~ m|^[^\.]+$|) {
498: #no extension add on orignal extension
499: if ($filename =~ m|/[^\.]*\.([^\.]+)$|) {
500: $newfilename.='.'.$1;
501: }
502: }
503: $request->print(&checksuffix($filename, $newfilename));
504: #renaming a dir, delete the trailing /
505: #remove last element for current dir
506: if ($filename =~ m|/$|) {
507: $filename =~ s|/$||;
508: $dir =~ s|/[^/]*$||;
509: }
510: my $return=&exists($user, $domain, $dir, $newfilename);
511: $request->print($return);
512: if ($return =~/^Error:/) {
513: $request->print('<br /><a href="'.$cancelurl.'">Cancel</a>');
514: return;
515: }
516: my $dest=&SimplifyDir($dir,$newfilename);
517: $request->print('<input type="hidden" name="newfilename" value="'.
518: $newfilename.
519: '" /><p>Rename <tt>'.$filename.
520: '</tt><br /> to <tt>'.
521: $dest.'</tt>?</p>');
522: &CloseForm1($request, $cancelurl);
523: } else {
524: $request->print('<p>No new filename specified</p></form>');
525: return;
526: }
527: } else {
528: $request->print('<p> No such File </p> </form>');
529: return;
530: }
531:
532: }
533: =pod
534:
535: =item Delete1
536:
537: Performs phase 1 processing of the delete operation. In phase one
538: we just check to be sure the file exists.
539:
540: Parameters:
541:
542: =over 4
543:
544: =item $request - Apache Request Object [in] request object for the current
545: request.
546:
547: =item $user - string [in] Name of session user.
548:
549:
550: =item $filename - string [in] Name fo the file to be deleted:
551: Filename is the full filesystem path to the file.
552:
553: =back
554:
555: =cut
556:
557: sub Delete1 {
558: my ($request, $user, $filename) = @_;
559:
560: my $cancelurl = '/priv/'.$filename;
561: $cancelurl =~ s/\/home\///;
562: $cancelurl =~ s/\/public_html//;
563:
564:
565: if( -e $filename) {
566: $request->print('<input type="hidden" name="newfilename" value="'.
567: $filename.'"/>');
568: $request->print('<p> Delete <tt>'.$filename.'</tt>?</p>');
569: &CloseForm1($request, $cancelurl);
570: } else {
571: $request->print('<p> No Such file: <tt>'.$filename.'</tt></p></form>');
572: }
573: }
574:
575: =pod
576:
577: =item Copy1($request, $user, $domain, $filename, $newfilename)
578:
579: Performs phase 1 processing of the construction space copy command.
580: Ensure that the source file exists. Ensure that a destination exists,
581: also warn if the destination already exists.
582:
583: Parameters:
584:
585: =over 4
586:
587: =item $request - Apache Request Object [in] request object for the current
588: request.
589:
590: =item $user - string [in] Name of the user initiating the request.
591:
592: =item $domain - string [in] Domain the initiating user is logged in as
593:
594: =item $dir - string [in] Directory path.
595:
596: =item $filename - string [in] Source filename.
597:
598: =item $newfilename-string [in] Destination filename.
599:
600: =back
601:
602: =cut
603:
604: sub Copy1 {
605: my ($request, $user, $domain, $dir, $filename, $newfilename) = @_;
606:
607: my $cancelurl = "/priv/".$filename;
608: $cancelurl =~ s/\/home\///;
609: $cancelurl =~ s/\/public_html//;
610:
611:
612: if(-e $filename) {
613: $request->print(&checksuffix($filename,$newfilename));
614: my $return=&exists($user, $domain, $dir, $newfilename);
615: $request->print($return);
616: if ($return =~/^Error:/) {
617: $request->print('<br /><a href="'.$cancelurl.'">Cancel</a>');
618: return;
619: }
620: my $dest=&SimplifyDir($dir,$newfilename);
621: $request->print('<input type = "hidden" name = "newfilename" value = "'.
622: $dir.'/'.$newfilename.
623: '" /><p>Copy <tt>'.$filename.'</tt><br /> to '.
624: '<tt>'.$dest.'</tt>?</p>');
625: &CloseForm1($request, $cancelurl);
626: } else {
627: $request->print('<p>No such file <tt>'.$filename.'</p></form>');
628: }
629: }
630:
631: =pod
632:
633: =item SimplifyDir
634:
635: Removes all extra / and all .. references
636:
637: Parameters:
638:
639: =over 4
640:
641: =item $dir - string [in] a directory name
642:
643: =item $file - string [in] a file reference relative to $dir
644:
645: =back
646:
647: Results: the concatenated path.
648:
649: =cut
650:
651: sub SimplifyDir {
652: my ($dir,$file) = @_;
653: my $location = $dir. '/'.$file;
654: $location=~s://+:/:g; # remove duplicate /
655: while ($location=~m:/\.\./:) {$location=~s:/[^/]+/\.\./:/:g;}#remove dir/..
656: return $location;
657: }
658:
659: =pod
660:
661: =item NewDir1
662:
663: Does all phase 1 processing of directory creation:
664: Ensures that the user provides a new directory name,
665: and that the directory does not already exist.
666:
667: Parameters:
668:
669: =over 4
670:
671: =item $request - Apache Request Object [in] - Server request object for the
672: current url.
673:
674: =item $username - Name of the user that is requesting the directory creation.
675:
676: =item $path - current directory relative to construction space.
677:
678: =item $newdir - Name of the directory to be created; path relative to the
679: top level of construction space.
680: =back
681:
682: Side Effects:
683:
684: =over 4
685:
686: =item A new form is displayed. Clicking on the confirmation button
687: causes the newdir operation to transition into phase 2. The hidden field
688: "newfilename" is set with the construction space path to the new directory.
689:
690:
691: =back
692:
693: =cut
694:
695:
696: sub NewDir1
697: {
698: my ($request, $username, $path, $newdir) = @_;
699:
700: my $fullpath = '/home/'.$username.'/public_html/'.
701: $path.'/'.$newdir;
702:
703: my $cancelurl = '/priv/'.$username.'/'.$path;
704:
705: &Debug($request, "Full path is : ".$fullpath);
706:
707: if(-e $fullpath) {
708: $request->print('<p>Directory exists.</p></form>');
709: }
710: else {
711: $request->print('<input type="hidden" name="newfilename" value="'.
712: $newdir.'" /><p>Make new directory <tt>'.
713: $path."/".$newdir.'</tt>?</p>');
714: &CloseForm1($request, $cancelurl);
715:
716: }
717: }
718:
719: =pod
720:
721: =item NewFile1
722:
723: Does all phase 1 processing of file creation:
724: Ensures that the user provides a new filename, adds proper extension
725: if needed and that the file does not already exist, if it is a html,
726: problem, page, or sequence, it then creates a form link to hand the
727: actual creation off to the proper handler.
728:
729: Parameters:
730:
731: =over 4
732:
733: =item $request - Apache Request Object [in] - Server request object for the
734: current url.
735:
736: =item $username - Name of the user that is requesting the directory creation.
737:
738: =item $domain - Name of the domain of the user
739:
740: =item $dir - current absolute diretory
741:
742: =item $newfilename
743: - Name of the file to be created; no path information
744: =back
745:
746: Side Effects:
747:
748: =over 4
749:
750: =item 2 new forms are displayed. Clicking on the confirmation button
751: causes the browser to attempt to load the specfied URL, allowing the
752: proper handler to take care of file creation. There is also a Cancle
753: button which returns you to the driectory listing you came from
754:
755: =back
756:
757: =cut
758:
759:
760: sub NewFile1 {
761: my ($request, $user, $domain, $dir, $newfilename) = @_;
762:
763: &Debug($request, "Dir is : ".$dir);
764: &Debug($request, "Newfile is : ".$newfilename);
765:
766: my $cancelurl = "/priv/".$dir;
767: $cancelurl =~ s/\/home\///;
768: $cancelurl =~ s/\/public_html//;
769:
770: if ($ENV{'form.action'} =~ /new(.+)file/) {
771: my $extension=$1;
772: if ($newfilename !~ /\Q.$extension\E$/) {
773: if ($newfilename =~ m|^[^\.]*\.([^\.]+)$|) {
774: #already has an extension strip it and add in expected one
775: $newfilename =~ s|.([^\.]+)$||;
776: }
777: $newfilename.=".$extension";
778: }
779: }
780:
781: my $fullpath = $dir.'/'.$newfilename;
782:
783: &Debug($request, "Full path is : ".$fullpath);
784:
785: if(-e $fullpath) {
786: $request->print('<p>File exists.</p></form>');
787: }
788: else {
789: $request->print('<p>Make new file <tt>'.$dir.'/'.$newfilename.'</tt>?</p>');
790: my $dest=&MakeFinalUrl($request,$fullpath);
791: &Debug($request, "Cancel url is: ".$cancelurl);
792: &Debug($request, "Dest url is: ".$dest);
793: $request->print('</form>');
794: $request->print('<form action="'.$dest.
795: '" method="GET"><p><input type="submit" value="Continue" /></p></form>');
796: $request->print('<form action="'.$cancelurl.
797: '" method="GET"><p><input type="submit" value="Cancel" /></p></form>');
798: }
799: }
800:
801: =pod
802:
803: =item phaseone($r, $fn, $uname, $udom)
804:
805: Peforms phase one processing of the request. In phase one, error messages
806: are returned if the request cannot be performed (e.g. attempts to manipulate
807: files that are nonexistent). If the operation can be performed, what is
808: about to be done will be presented to the user for confirmation. If the
809: user confirms the request, then phase two is executed, the action
810: performed and reported to the user.
811:
812: Parameters:
813:
814: =over 4
815:
816: =item $r - request object [in] - The Apache request being executed.
817:
818: =item $fn = string [in] - The filename being manipulated by the
819: request.
820:
821: =item $uname - string [in] Name of user logged in and doing this action.
822:
823: =item $udom - string [in] Domain name under which the user logged in.
824:
825: =back
826:
827: =cut
828:
829: sub phaseone {
830: my ($r,$fn,$uname,$udom)=@_;
831:
832: $fn=~m:(.*)/([^/]+)\.(\w+)$:;
833: my $dir=$1;
834: my $main=$2;
835: my $suffix=$3;
836:
837: # my $conspace=ConstructionPathFromRelative($uname, $fn);
838:
839:
840: $r->print('<form action="/adm/cfile" method="post">'.
841: '<input type="hidden" name="filename" value="/~'.$uname.$fn.'" />'.
842: '<input type="hidden" name="phase" value="two" />'.
843: '<input type="hidden" name="action" value="'.$ENV{'form.action'}.'" />');
844:
845: if ($ENV{'form.action'} eq 'rename') {
846: if (!defined($dir)) {
847: $fn=~m:(.*)/:;
848: $dir=$1;
849: }
850: &Rename1($r, $fn, $uname, $udom, $dir);
851: } elsif ($ENV{'form.action'} eq 'delete') {
852:
853: &Delete1($r, $uname, $fn);
854:
855: } elsif ($ENV{'form.action'} eq 'copy') {
856: if($ENV{'form.newfilename'}) {
857: my $newfilename = $ENV{'form.newfilename'};
858: &Copy1($r, $uname, $udom, $dir, $fn, $newfilename);
859: }else {
860: $r->print('<p>No new filename specified.</p></form>');
861: }
862: } elsif ($ENV{'form.action'} eq 'newdir') {
863: &NewDir1($r, $uname, $dir, $ENV{'form.newfilename'});
864: } elsif ($ENV{'form.action'} eq 'newfile' ||
865: $ENV{'form.action'} eq 'newhtmlfile' ||
866: $ENV{'form.action'} eq 'newproblemfile') {
867: if($ENV{'form.newfilename'}) {
868: my $newfilename = $ENV{'form.newfilename'};
869: if (!defined($dir)) {
870: $fn=~m:(.*)/:;
871: $dir=$1;
872: }
873: &NewFile1($r, $uname, $udom, $dir, $newfilename);
874: } else {
875: $r->print('<p>No new filename specified.</p></form>');
876: }
877: }
878: }
879:
880: =pod
881:
882: =item Rename2($request, $user, $directory, $oldfile, $newfile)
883:
884: Performs phase 2 processing of a rename reequest. This is where the
885: actual rename is performed.
886:
887: Parameters
888:
889: =over 4
890:
891: =item $request - Apache request object [in] The request being processed.
892:
893: =item $user - string [in] The name of the user initiating the request.
894:
895: =item $directory - string [in] The name of the directory relative to the
896: construction space top level of the renamed file.
897:
898: =item $oldfile - Name of the file.
899:
900: =item $newfile - Name of the new file.
901:
902: =back
903:
904: Returns:
905:
906: =over 4
907:
908: =item 1 Success.
909:
910: =item 0 Failure.
911:
912: =cut
913:
914: sub Rename2 {
915:
916: my ($request, $user, $directory, $oldfile, $newfile) = @_;
917:
918: &Debug($request, "Rename2 directory: ".$directory." old file: ".$oldfile.
919: " new file ".$newfile."\n");
920: &Debug($request, "Target is: ".$directory.'/'.
921: $newfile);
922:
923: if(-e $oldfile) {
924: my $dest;
925:
926: if ($oldfile =~ m|/$|) {
927: #renaming a dir
928: $oldfile =~ s|/$||;
929: $dest=$directory;
930: $dest=~s|(/)([^/]*)$|$1|;
931: $dest.='/'.$newfile;
932: } else {
933: $dest=$directory.'/'.$newfile;
934: }
935:
936: unless(rename($oldfile,$dest)) {
937: $request->print('<font color="red">Error: '.$!.'</font>');
938: return 0;
939: } else {}
940: } else {
941: $request->print("<p> No such file: /home".$user.'/public_html'.
942: $oldfile.' </p></form>');
943: return 0;
944: }
945: return 1;
946: }
947: =pod
948:
949: =item Delete2($request, $user, $filename)
950:
951: Performs phase two of a delete. The user has confirmed that they want
952: to delete the selected file. The file is deleted and the results of the
953: delete attempt are indicated.
954:
955: Parameters:
956:
957: =over 4
958:
959: =item $request - Apache Request object [in] the request object for the current
960: delete operation.
961:
962: =item $user - string [in] The name of the user initiating the delete
963: request.
964:
965: =item $filename - string [in] The name of the file, relative to construction
966: space, to delete.
967:
968: =back
969:
970: Returns:
971: 1 - success.
972: 0 - Failure.
973:
974: =cut
975:
976: sub Delete2 {
977: my ($request, $user, $filename) = @_;
978:
979: if(-e $filename) {
980: unless(unlink($filename)) {
981: $request->print('<font color="red">Error: '.$!.'</font>');
982: return 0;
983: }
984: } else {
985: $request->print('<p> No such file. </p></form');
986: return 0;
987: }
988: return 1;
989: }
990:
991: =pod
992:
993: =item Copy2($request, $username, $dir, $oldfile, $newfile)
994:
995: Performs phase 2 of a copy. The file is copied and the status
996: of that copy is reported back to the user.
997:
998: =over 4
999:
1000: =item $request - Apache request object [in]; the apache request currently
1001: being executed.
1002:
1003: =item $username - string [in] Name of the user who is requesting the copy.
1004:
1005: =item $dir - string [in] Directory path relative to the construction space
1006: of the destination file.
1007:
1008: =item $oldfile - string [in] Name of the source file.
1009:
1010: =item $newfile - string [in] Name of the destination file.
1011:
1012:
1013: =back
1014:
1015: Returns 0 failure, and 0 successs.
1016:
1017: =cut
1018:
1019: sub Copy2 {
1020: my ($request, $username, $dir, $oldfile, $newfile) = @_;
1021: &Debug($request ,"Will try to copy $oldfile to $newfile");
1022: if(-e $oldfile) {
1023: unless (copy($oldfile, $newfile)) {
1024: $request->print('<font color="red"> copy Error: '.$!.'</font>');
1025: return 0;
1026: } else {
1027: unless (chmod(0660, $newfile)) {
1028: $request->print('<font color="red"> chmod error: '.$!.'</font>');
1029: return 0;
1030: }
1031: return 1;
1032: }
1033: } else {
1034: $request->print('<p> No such file </p>');
1035: return 0;
1036: }
1037: return 1;
1038: }
1039: =pod
1040:
1041: =item NewDir2($request, $user, $newdirectory)
1042:
1043: Performs phase 2 processing of directory creation. This involves creating the directory and
1044: reporting the results of that creation to the user.
1045:
1046: Parameters:
1047: =over 4
1048:
1049: =item $request - Apache request object [in]. Object representing the current HTTP request.
1050:
1051: =item $user - string [in] The name of the user that is initiating the request.
1052:
1053: =item $newdirectory - string [in] The full path of the directory being created.
1054:
1055: =back
1056:
1057: Returns 0 - failure 1 - success.
1058:
1059: =cut
1060:
1061: sub NewDir2 {
1062: my ($request, $user, $newdirectory) = @_;
1063:
1064: unless(mkdir($newdirectory, 02770)) {
1065: $request->print('<font color="red">Error: '.$!.'</font>');
1066: return 0;
1067: }
1068: unless(chmod(02770, ($newdirectory))) {
1069: $request->print('<font color="red"> Error: '.$!.'</font>');
1070: return 0;
1071: }
1072: return 1;
1073: }
1074:
1075: =pod
1076:
1077: =item phasetwo($r, $fn, $uname, $udom)
1078:
1079: Controls the phase 2 processing of file management
1080: requests for construction space. In phase one, the user
1081: was asked to confirm the operation. In phase 2, the operation
1082: is performed and the result is shown.
1083:
1084: The strategy is to break out the processing into specific action processors
1085: named action2 where action is the requested action and the 2 denotes
1086: phase 2 processing.
1087:
1088: Parameters:
1089:
1090: =over 4
1091:
1092: =item $r - Apache Request object [in] The request object for this httpd
1093: transaction.
1094:
1095: =item $fn - string [in] A filename indicating the object that is being
1096: manipulated.
1097:
1098: =item $uname - string [in] The name of the user initiating the file management
1099: request.
1100:
1101: =item $udom - string [in] The login domain of the user initiating the
1102: file management request.
1103: =back
1104:
1105: =cut
1106:
1107: sub phasetwo {
1108: my ($r,$fn,$uname,$udom)=@_;
1109:
1110: &Debug($r, "loncfile - Entering phase 2 for $fn");
1111:
1112: # Break down the file into it's component pieces.
1113:
1114: my $dir; # Directory path
1115: my $main; # Filename.
1116: my $suffix; # Extension.
1117:
1118: if ($fn=~m:(.*)/([^/]+)\.(\w+)$:) {
1119: $dir=$1; # Directory path
1120: $main=$2; # Filename.
1121: $suffix=$3; # Extension.
1122: }
1123:
1124: my $dest; # On success this is where we'll go.
1125:
1126: &Debug($r,
1127: "loncfile::phase2 dir = $dir main = $main suffix = $suffix");
1128: &Debug($r,
1129: " newfilename = ".$ENV{'form.newfilename'});
1130:
1131: my $conspace=$fn;
1132:
1133: &Debug($r,
1134: "loncfile::phase2 Full construction space name: $conspace");
1135:
1136: &Debug($r,
1137: "loncfie::phase2 action is $ENV{'form.action'}");
1138:
1139: # Select the appropriate processing sub.
1140:
1141: if ($ENV{'form.action'} eq 'rename') { # Rename.
1142: if($ENV{'form.newfilename'}) {
1143: if (!defined($dir)) {
1144: $fn=~m:^(.*)/:;
1145: $dir=$1;
1146: }
1147: if(!&Rename2($r, $uname, $dir, $fn, $ENV{'form.newfilename'})) {
1148: return;
1149: }
1150: # Prepend the directory to the new name to form the basis of the
1151: # url of the new resource.
1152: #
1153: #renaming a dir
1154: #remove last element for current dir
1155: if ($fn =~ m|/$|) { $dir =~ s|/[^/]*$||; }
1156: $dest = $dir."/".$ENV{'form.newfilename'};
1157: }
1158: } elsif ($ENV{'form.action'} eq 'delete') {
1159: if(!&Delete2($r, $uname, $ENV{'form.newfilename'})) {
1160: return ;
1161: }
1162: # Once a resource is deleted, we just list the directory that
1163: # previously held it.
1164: #
1165: $dest = $dir."/."; # Parent dir.
1166: } elsif ($ENV{'form.action'} eq 'copy') {
1167: if($ENV{'form.newfilename'}) {
1168: if(!&Copy2($r, $uname, $dir, $fn, $ENV{'form.newfilename'})) {
1169: return
1170: }
1171: $dest = $ENV{'form.newfilename'};
1172:
1173: } else {
1174: $r->print('<p>No New filename specified</p></form>');
1175: return;
1176: }
1177:
1178: } elsif ($ENV{'form.action'} eq 'newdir') {
1179: #
1180: # Since the newfilename form field is construction space
1181: # relative, ew need to prepend the current path; now in $fn.
1182: #
1183: my $newdir= $fn.$ENV{'form.newfilename'};
1184: if(!&NewDir2($r, $uname, $newdir)) {
1185: return;
1186: }
1187: $dest = $newdir."/"
1188: }
1189: #
1190: # Substitute for priv for the first home in $dir to get our
1191: # construction space path.
1192: #
1193: $dest=&MakeFinalUrl($r,$dest);
1194:
1195: $r->print('<h3><a href="'.$dest.'">Done</a></h3>');
1196: }
1197:
1198: sub MakeFinalUrl {
1199: my($r,$dest)=@_;
1200: &Debug($r, "Final url is: $dest");
1201: $dest =~ s|/home/|/priv/|;
1202: $dest =~ s|/public_html||;
1203:
1204: my $base = &File::Basename::basename($dest);
1205: my $dpath= &File::Basename::dirname($dest);
1206: if ($base eq '.') { $base=''; }
1207: $dest = &HTML::Entities::encode($dpath.'/'.$base);
1208:
1209: &Debug($r, "Final url after rewrite: $dest");
1210: return $dest;
1211: }
1212:
1213: sub handler {
1214:
1215: $r=shift;
1216:
1217:
1218: &Debug($r, "loncfile.pm - handler entered");
1219: &Debug($r, " filename: ".$ENV{'form.filename'});
1220: &Debug($r, " newfilename: ".$ENV{'form.newfilename'});
1221:
1222: my $fn;
1223:
1224: if ($ENV{'form.filename'}) {
1225: $fn=&Apache::lonnet::unescape($ENV{'form.filename'});
1226: &Debug($r, "loncfile::handler - raw url: $fn");
1227: # $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
1228: # $fn=~s/^http\:\/\/[^\/]+//;
1229: $fn=URLToPath($fn);
1230: &Debug($r, "loncfile::handler - doctored url: $fn");
1231:
1232: } else {
1233: &Debug($r, "loncfile::handler - no form.filename");
1234: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1235: ' unspecified filename for cfile', $r->filename);
1236: return HTTP_NOT_FOUND;
1237: }
1238:
1239: unless ($fn) {
1240: &Debug($r, "loncfile::handler - doctored url is empty");
1241: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1242: ' trying to cfile non-existing file', $r->filename);
1243: return HTTP_NOT_FOUND;
1244: }
1245:
1246: # ----------------------------------------------------------- Start page output
1247: my $uname;
1248: my $udom;
1249:
1250: ($uname,$udom)=
1251: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
1252: &Debug($r,
1253: "loncfile::handler constructaccess uname = $uname domain = $udom");
1254: unless (($uname) && ($udom)) {
1255: $r->log_reason($uname.' at '.$udom.
1256: ' trying to manipulate file '.$ENV{'form.filename'}.
1257: ' ('.$fn.') - not authorized',
1258: $r->filename);
1259: return HTTP_NOT_ACCEPTABLE;
1260: }
1261:
1262: $fn=~s/\/\~(\w+)//;
1263: &Debug($r, "loncfile::handler ~ removed filename: $fn");
1264:
1265: $r->content_type('text/html');
1266: $r->send_http_header;
1267:
1268: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
1269:
1270: $r->print(
1271: '<body bgcolor="#FFFFFF"><img align="right" src="/adm/lonIcons/lonlogos.gif" />');
1272:
1273:
1274: $r->print('<h1>Construction Space <tt>'.$fn.'</tt></h1>');
1275:
1276: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
1277: $r->print('<h3><font color="red">Co-Author: '.$uname.' at '.$udom.
1278: '</font></h3>');
1279: }
1280:
1281:
1282: &Debug($r, "loncfile::handler Form action is $ENV{'form.action'} ");
1283: if ($ENV{'form.action'} eq 'delete') {
1284:
1285: $r->print('<h3>Delete</h3>');
1286: } elsif ($ENV{'form.action'} eq 'rename') {
1287: $r->print('<h3>Rename</h3>');
1288: } elsif ($ENV{'form.action'} eq 'newdir') {
1289: $r->print('<h3>New Directory</h3>');
1290: } elsif ($ENV{'form.action'} eq 'copy') {
1291: $r->print('<h3>Copy</h3>');
1292: } elsif ($ENV{'form.action'} eq 'newfile' ||
1293: $ENV{'form.action'} eq 'newhtmlfile' ||
1294: $ENV{'form.action'} eq 'newproblemfile') {
1295: $r->print('<h3>New Resource</h3>');
1296: } else {
1297: $r->print('<p>Unknown Action</p></body></html>');
1298: return OK;
1299: }
1300: if ($ENV{'form.phase'} eq 'two') {
1301: &Debug($r, "loncfile::handler entering phase2");
1302: &phasetwo($r,$fn,$uname,$udom);
1303: } else {
1304: &Debug($r, "loncfile::handler entering phase1");
1305: &phaseone($r,$fn,$uname,$udom);
1306: }
1307:
1308: $r->print('</body></html>');
1309: return OK;
1310: }
1311:
1312: 1;
1313: __END__
1314:
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