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 1.18 2002/09/10 02:31:26 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: # 05/28/02 Ron Fox:
57: # - Started putting in pod in standard format.
58: =pod
59:
60: =head1 NAME
61:
62: Apache::loncfile - Construction space file management.
63:
64: =head1 SYNOPSIS
65:
66: Content handler for buttons on the top frame of the construction space
67: directory.
68:
69: =head1 INTRODUCTION
70:
71: loncfile is invoked when buttons in the top frame of the construction
72: space directory listing are clicked. All operations proceed in two phases.
73: The first phase describes to the user exactly what will be done. If the user
74: confirms the operation, the second phase commits the operation and indicates
75: completion. When the user dismisses the output of phase2, they are returned to
76: an "appropriate" directory listing in general.
77:
78: This is part of the LearningOnline Network with CAPA project
79: described at http://www.lon-capa.org.
80:
81: =head2 Subroutines
82:
83: =cut
84:
85: package Apache::loncfile;
86:
87: use strict;
88: use Apache::File;
89: use File::Basename;
90: use File::Copy;
91: use HTML::Entities();
92: use Apache::Constants qw(:common :http :methods);
93: use Apache::loncacc;
94: use Apache::Log ();
95: use Apache::lonnet;
96:
97: my $DEBUG=0;
98: my $r; # Needs to be global for some stuff RF.
99:
100: =pod
101:
102: =item Debug($request, $message)
103:
104: If debugging is enabled puts out a debugging message determined by the
105: caller. The debug message goes to the Apache error log file. Debugging
106: is enabled by setting the module global DEBUG variable to nonzero (TRUE).
107:
108: Parameters:
109:
110: =over 4
111:
112: =item $request - The current request operation.
113:
114: =item $message - The message to put in the log file.
115:
116: =back
117:
118: Returns:
119: nothing.
120:
121: =cut
122:
123: sub Debug {
124:
125: # Marshall the parameters.
126:
127: my $r = shift;
128: my $log = $r->log;
129: my $message = shift;
130:
131: # Put out the indicated message butonly if DEBUG is false.
132:
133: if ($DEBUG) {
134: $log->debug($message);
135: }
136: }
137:
138: =pod
139:
140: =item URLToPath($url)
141:
142: Convert a URL to a file system path.
143:
144: In order to manipulate the construction space objects, it is necessary
145: to access url identified objects a filespace objects. This function
146: translates a construction space URL to a file system path.
147: Parameters:
148:
149: =over 4
150:
151: =item Url - string [in] The url to convert.
152:
153: =back
154:
155: Returns:
156:
157: =over 4
158:
159: =item The corresponding file system path.
160:
161: =back
162:
163: Global References
164:
165: =over 4
166:
167: =item $r - Request object [in] Referenced in the &Debug calls.
168:
169: =back
170:
171: =cut
172:
173: sub URLToPath {
174: my $Url = shift;
175: &Debug($r, "UrlToPath got: $Url");
176: $Url=~ s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
177: $Url=~ s/^http\:\/\/[^\/]+//;
178: &Debug($r, "Returning $Url \n");
179: return $Url;
180: }
181:
182: =pod
183:
184: =item PublicationPath($domain, $user, $dir, $file)
185:
186: Determines the filesystem path corresponding to a published resource
187: specification. The returned value is the path.
188: Parameters:
189:
190: =over 4
191:
192: =item $domain - string [in] Name of the domain within which the resource is
193: stored.
194:
195: =item $user - string [in] Name of the user asking about the resource.
196:
197: =item $dir - Directory path relative to the top of the resource space.
198:
199: =item $file - name of the resource file itself without path info.
200:
201: =back
202:
203: =over 4
204:
205: Returns:
206:
207: =item string - full path to the file if it exists in publication space.
208:
209: =back
210:
211: =cut
212:
213: sub PublicationPath
214: {
215: my ($domain, $user, $dir, $file)=@_;
216:
217: return '/home/httpd/html/res/'.$domain.'/'.$user.'/'.$dir.'/'.
218: $file;
219: }
220:
221: =pod
222:
223: =item ConstructionPath($domain, $user, $dir, $file)
224:
225: Determines the filesystem path corresponding to a construction space
226: resource specification. The returned value is the path
227: Parameters:
228:
229: =over 4
230:
231: =item $user - string [in] Name of the user asking about the resource.
232:
233: =item $dir - Directory path relative to the top of the resource space.
234:
235: =item $file - name of the resource file itself without path info.
236:
237: Returns:
238:
239: =item string - full path to the file if it exists in Construction space.
240:
241: =back
242:
243: =cut
244:
245: sub ConstructionPath {
246: my ($user, $dir, $file) = @_;
247:
248: return '/home/'.$user.'/public_html/'.$dir.'/'.$file;
249:
250: }
251: =pod
252:
253: =item ConstructionPathFromRelative($user, $relname)
254:
255: Determines the path to a construction space file given
256: the username and the path relative to the root of construction space.
257:
258: Parameters:
259:
260: =over 4
261:
262: =item $user - string [in] Name of the user in whose construction space the
263: file [will] live.
264:
265: =item $relname - string[in] Path to the file relative to the root of the
266: construction space.
267:
268: =back
269:
270: Returns:
271:
272: =over 4
273:
274: =item string - Full path to the file.
275:
276: =back
277:
278: =cut
279:
280: sub ConstructionPathFromRelative {
281:
282: my ($user, $relname) = @_;
283: return '/home/'.$user.'/public_html'.$relname;
284:
285: }
286:
287: =pod
288:
289: =item exists($user, $domain, $directory, $file)
290:
291: Determine if a resource file name has been published or exists
292: in the construction space.
293:
294: Parameters:
295:
296: =over 4
297:
298: =item $user - string [in] - Name of the user for which to check.
299:
300: =item $domain - string [in] - Name of the domain in which the resource
301: might have been published.
302:
303: =item $dir - string [in] - Path relative to construction or resource space
304: in which the resource might live.
305:
306: =item $file - string [in] - Name of the file.
307:
308: =back
309:
310: Returns:
311:
312: =over 4
313:
314: =item string - Either where the resource exists as an html string that can
315: be embedded in a dialog or an empty string if the resource
316: does not exist.
317:
318: =back
319:
320: =cut
321:
322: sub exists {
323: my ($user, $domain, $dir, $file) = @_;
324:
325: # Create complete paths in publication and construction space.
326:
327: my $published = &PublicationPath($domain, $user, $dir, $file);
328: my $construct = &ConstructionPath($user, $dir, $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 ( -e $published) {
335: $result.='<p><font color=red>Warning: target file exists, and has been published!</font></p>';
336: }
337: elsif ( -e $construct) {
338: $result.='<p><font color=red>Warning: target file exists!</font></p>';
339: }
340:
341: return $result;
342:
343: }
344:
345: =pod
346:
347: =item checksuffix($old, $new)
348:
349: Determine if a resource filename suffix (the stuff after the .) would change
350: as a result of this operation.
351:
352: Parameters:
353:
354: =over 4
355:
356: =item $old = string [in] Previous filename.
357:
358: =item $new = string [in] Resultant filename.
359:
360: =back
361:
362: Returns:
363:
364: =over 4
365:
366: =item Empty string if everything worked.
367:
368: =item String containing an error message if there was a problem.
369:
370: =back
371:
372: =cut
373:
374: sub checksuffix {
375: my ($old,$new) = @_;
376: my $result;
377: my $oldsuffix;
378: my $newsuffix;
379: if ($new=~m:(.*/*)([^/]+)\.(\w+)$:) { $newsuffix=$3; }
380: if ($old=~m:(.*)/+([^/]+)\.(\w+)$:) { $oldsuffix=$3; }
381: if ($oldsuffix ne $newsuffix) {
382: $result.=
383: '<p><font color=red>Warning: change of MIME type!</font></p>';
384: }
385: return $result;
386: }
387: =pod
388:
389: =item CloseForm1($request, $user, $file)
390:
391: Close of a form on the successful completion of phase 1 processing
392:
393: Parameters:
394:
395: =over 4
396:
397: =item $request - Apache Request Object [in] - Apache server request object.
398:
399: =item $cancelurl - the url to go to on cancel.
400:
401: =back
402:
403: =cut
404:
405: sub CloseForm1 {
406: my ($request, $cancelurl) = @_;
407:
408:
409: &Debug($request, "Cancel url is: ".$cancelurl);
410: $request->print('<p><input type=submit value=Continue></p></form>');
411: $request->print('<form action="'.$cancelurl.
412: '" method=GET"><p><input type=submit value=Cancel><p></form>');
413:
414: }
415:
416:
417: =pod
418:
419: =item CloseForm2($request, $user, $directory)
420:
421: Successfully close off the phase 2 form.
422:
423: Parameters:
424:
425: =over 4
426:
427: =item $request - Apache Request object [in] - The request that is being
428: executed.
429:
430: =item $user - string [in] - Name of the user that is initiating the
431: request.
432:
433: =item $directory - string [in] - Directory in which the operation is
434: being done relative to the top level construction space
435: directory.
436:
437: =back
438:
439: =cut
440:
441: sub CloseForm2 {
442: my ($request, $user, $directory) = @_;
443:
444: $request->print('<h3><a=href="/priv/'.$user.$directory.'/">Done </a> </h3>');
445: }
446:
447: =pod
448:
449: =item Rename1($request, $filename, $user, $domain, $dir)
450:
451: Perform phase 1 processing of the file rename operation.
452:
453: Parameters:
454:
455: =over 4
456:
457: =item $request - Apache Request Object [in] The request object for the
458: current request.
459:
460: =item $filename - The filename relative to construction space.
461:
462: =item $user - Name of the user making the request.
463:
464: =item $domain - User login domain.
465:
466: =item $dir - Directory specification of the path to the file.
467:
468: =back
469:
470: Side effects:
471:
472: =over 4
473:
474: =item A new form is displayed prompting for confirmation. The newfilename
475: hidden field of this form is loaded with
476: new filename relative to the current directory ($dir).
477:
478: =back
479:
480: =cut
481:
482: sub Rename1 {
483: my ($request, $filename, $user, $domain, $dir) = @_;
484: &Debug($request, "Username - ".$user." filename: ".$filename."\n");
485: my $conspace = $filename;
486:
487: my $cancelurl = "/priv/".$filename;
488: $cancelurl =~ s/\/home\///;
489: $cancelurl =~ s/\/public_html//;
490:
491: if(-e $conspace) {
492: if($ENV{'form.newfilename'}) {
493: my $newfilename = $ENV{'form.newfilename'};
494: $request->print(&checksuffix($filename, $newfilename));
495: $request->print(&exists($user, $domain, $dir, $newfilename));
496: $request->print('<input type=hidden name=newfilename value="'.
497: $newfilename.
498: '"><p>Rename <tt>'.$filename.'</tt> to <tt>'.
499: $dir.'/'.$newfilename.'</tt>?</p>');
500: &CloseForm1($request, $cancelurl);
501: } else {
502: $request->print('<p>No new filename specified</p></form>');
503: return;
504: }
505: } else {
506: $request->print('<p> No such File </p> </form>');
507: return;
508: }
509:
510: }
511: =pod
512:
513: =item Delete1
514:
515: Performs phase 1 processing of the delete operation. In phase one
516: we just check to be sure the file exists.
517:
518: Parameters:
519:
520: =over 4
521:
522: =item $request - Apache Request Object [in] request object for the current
523: request.
524:
525: =item $user - string [in] Name of session user.
526:
527:
528: =item $filename - string [in] Name fo the file to be deleted:
529: Filename is the full filesystem path to the file.
530:
531: =back
532:
533: =cut
534:
535: sub Delete1 {
536: my ($request, $user, $filename) = @_;
537:
538: my $cancelurl = '/priv/'.$filename;
539: $cancelurl =~ s/\/home\///;
540: $cancelurl =~ s/\/public_html//;
541:
542:
543: if( -e $filename) {
544: $request->print('<input type=hidden name=newfilename value="'.
545: $filename.'">');
546: $request->print('<p> Delete <tt>'.$filename.'</tt>?</p>');
547: &CloseForm1($request, $cancelurl);
548: } else {
549: $request->print('<p> No Such file: <tt>'.$filename.'</tt></p></form>');
550: }
551: }
552:
553: =pod
554:
555: =item Copy1($request, $user, $domain, $filename, $newfilename)
556:
557: Performs phase 1 processing of the construction space copy command.
558: Ensure that the source file exists. Ensure that a destination exists,
559: also warn if the destination already exists.
560:
561: Parameters:
562:
563: =over 4
564:
565: =item $request - Apache Request Object [in] request object for the current
566: request.
567:
568: =item $user - string [in] Name of the user initiating the request.
569:
570: =item $domain - string [in] Domain the initiating user is logged in as
571:
572: =item $dir - string [in] Directory path.
573:
574: =item $filename - string [in] Source filename.
575:
576: =item $newfilename-string [in] Destination filename.
577:
578: =back
579:
580: =cut
581:
582: sub Copy1 {
583: my ($request, $user, $domain, $dir, $filename, $newfilename) = @_;
584:
585: my $cancelurl = "/priv/".$filename;
586: $cancelurl =~ s/\/home\///;
587: $cancelurl =~ s/\/public_html//;
588:
589:
590:
591: if(-e $filename) {
592: $request->print(&checksuffix($filename,$newfilename));
593: $request->print(&exists($user, $domain, $dir, $newfilename));
594: $request->print('<input type = hidden name = newfilename value = "'.
595: $dir.'/'.$newfilename.
596: '"><p>Copy <tt>'.$filename.'</tt> to'.
597: '<tt>'.$dir.'/'.$newfilename.'</tt>/?</p>');
598: &CloseForm1($request, $cancelurl);
599: } else {
600: $request->print('<p>No such file <tt>'.$filename.'</p></form>');
601: }
602: }
603:
604: =pod
605:
606: =item NewDir1
607:
608: Does all phase 1 processing of directory creation:
609: Ensures that the user provides a new directory name,
610: and that the directory does not already exist.
611:
612: Parameters:
613:
614: =over 4
615:
616: =item $request - Apache Request Object [in] - Server request object for the
617: current url.
618:
619: =item $username - Name of the user that is requesting the directory creation.
620:
621: =item $path - current directory relative to construction space.
622:
623: =item $newdir - Name of the directory to be created; path relative to the
624: top level of construction space.
625: =back
626:
627: Side Effects:
628:
629: =over 4
630:
631: =item A new form is displayed. Clicking on the confirmation button
632: causes the newdir operation to transition into phase 2. The hidden field
633: "newfilename" is set with the construction space path to the new directory.
634:
635:
636: =back
637:
638: =cut
639:
640:
641: sub NewDir1
642: {
643: my ($request, $username, $path, $newdir) = @_;
644:
645: my $fullpath = '/home/'.$username.'/public_html/'.
646: $path.'/'.$newdir;
647:
648: my $cancelurl = '/priv/'.$username.'/'.$path;
649:
650: &Debug($request, "Full path is : ".$fullpath);
651:
652: if(-e $fullpath) {
653: $request->print('<p>Directory exists.</p></form>');
654: }
655: else {
656: $request->print('<input type=hidden name=newfilename value="'.
657: $newdir.'"><p>Make new directory <tt>'.
658: $path."/".$newdir.'</tt>?</p>');
659: &CloseForm1($request, $cancelurl);
660:
661: }
662: }
663:
664: =pod
665:
666: =item phaseone($r, $fn, $uname, $udom)
667:
668: Peforms phase one processing of the request. In phase one, error messages
669: are returned if the request cannot be performed (e.g. attempts to manipulate
670: files that are nonexistent). If the operation can be performed, what is
671: about to be done will be presented to the user for confirmation. If the
672: user confirms the request, then phase two is executed, the action
673: performed and reported to the user.
674:
675: Parameters:
676:
677: =over 4
678:
679: =item $r - request object [in] - The Apache request being executed.
680:
681: =item $fn = string [in] - The filename being manipulated by the
682: request.
683:
684: =item $uname - string [in] Name of user logged in and doing this action.
685:
686: =item $udom - string [in] Domain name under which the user logged in.
687:
688: =back
689:
690: =cut
691:
692: sub phaseone {
693: my ($r,$fn,$uname,$udom)=@_;
694:
695: $fn=~m:(.*)/([^/]+)\.(\w+)$:;
696: my $dir=$1;
697: my $main=$2;
698: my $suffix=$3;
699:
700: # my $conspace=ConstructionPathFromRelative($uname, $fn);
701:
702:
703: $r->print('<form action=/adm/cfile method=post>'.
704: '<input type=hidden name=filename value="/~'.$uname.$fn.'">'.
705: '<input type=hidden name=phase value=two>'.
706: '<input type=hidden name=action value='.$ENV{'form.action'}.'>');
707:
708: if ($ENV{'form.action'} eq 'rename') {
709:
710: &Rename1($r, $fn, $uname, $udom, $dir);
711:
712: } elsif ($ENV{'form.action'} eq 'delete') {
713:
714: &Delete1($r, $uname, $fn);
715:
716: } elsif ($ENV{'form.action'} eq 'copy') {
717: if($ENV{'form.newfilename'}) {
718: my $newfilename = $ENV{'form.newfilename'};
719: &Copy1($r, $uname, $udom, $dir, $fn, $newfilename);
720: }else {
721: $r->print('<p>No new filename specified.</p></form>');
722: }
723: } elsif ($ENV{'form.action'} eq 'newdir') {
724: &NewDir1($r, $uname, $dir, $ENV{'form.newfilename'});
725: }
726:
727: }
728:
729: =pod
730:
731: =item Rename2($request, $user, $directory, $oldfile, $newfile)
732:
733: Performs phase 2 processing of a rename reequest. This is where the
734: actual rename is performed.
735:
736: Parameters
737:
738: =over 4
739:
740: =item $request - Apache request object [in] The request being processed.
741:
742: =item $user - string [in] The name of the user initiating the request.
743:
744: =item $directory - string [in] The name of the directory relative to the
745: construction space top level of the renamed file.
746:
747: =item $oldfile - Name of the file.
748:
749: =item $newfile - Name of the new file.
750:
751: =back
752:
753: Returns:
754:
755: =over 4
756:
757: =item 1 Success.
758:
759: =item 0 Failure.
760:
761: =cut
762:
763: sub Rename2 {
764:
765: my ($request, $user, $directory, $oldfile, $newfile) = @_;
766:
767: &Debug($request, "Rename2 directory: ".$directory." old file: ".$oldfile.
768: " new file ".$newfile."\n");
769: &Debug($request, "Target is: ".$directory.'/'.
770: $newfile);
771:
772: if(-e $oldfile) {
773: unless(rename($oldfile,
774: $directory.'/'.$newfile)) {
775: $request->print('<font color=red>Error: '.$!.'</font>');
776: return 0;
777: } else {}
778: } else {
779: $request->print("<p> No such file: /home".$user.'/public_html'.
780: $oldfile.' </p></form>');
781: return 0;
782: }
783: return 1;
784: }
785: =pod
786:
787: =item Delete2($request, $user, $filename)
788:
789: Performs phase two of a delete. The user has confirmed that they want
790: to delete the selected file. The file is deleted and the results of the
791: delete attempt are indicated.
792:
793: Parameters:
794:
795: =over 4
796:
797: =item $request - Apache Request object [in] the request object for the current
798: delete operation.
799:
800: =item $user - string [in] The name of the user initiating the delete
801: request.
802:
803: =item $filename - string [in] The name of the file, relative to construction
804: space, to delete.
805:
806: =back
807:
808: Returns:
809: 1 - success.
810: 0 - Failure.
811:
812: =cut
813:
814: sub Delete2 {
815: my ($request, $user, $filename) = @_;
816:
817: if(-e $filename) {
818: unless(unlink($filename)) {
819: $request->print('<font color=red>Error: '.$!.'</font>');
820: return 0;
821: }
822: } else {
823: $request->print('<p> No such file. </form');
824: return 0;
825: }
826: return 1;
827: }
828:
829: =pod
830:
831: =item Copy2($request, $username, $dir, $oldfile, $newfile)
832:
833: Performs phase 2 of a copy. The file is copied and the status
834: of that copy is reported back to the user.
835:
836: =over 4
837:
838: =item $request - Apache request object [in]; the apache request currently
839: being executed.
840:
841: =item $username - string [in] Name of the user who is requesting the copy.
842:
843: =item $dir - string [in] Directory path relative to the construction space
844: of the destination file.
845:
846: =item $oldfile - string [in] Name of the source file.
847:
848: =item $newfile - string [in] Name of the destination file.
849:
850:
851: =back
852:
853: Returns 0 failure, and 0 successs.
854:
855: =cut
856:
857: sub Copy2 {
858: my ($request, $username, $dir, $oldfile, $newfile) = @_;
859: &Debug($request ,"Will try to copy $oldfile to $newfile");
860: if(-e $oldfile) {
861: unless (copy($oldfile, $newfile)) {
862: $request->print('<font color=red> copy Error: '.$!.'</font>');
863: return 0;
864: } else {
865: unless (chmod(0660, $newfile)) {
866: $request->print('<font color=red> chmod error: '.$!.'</font>');
867: return 0;
868: }
869: return 1;
870: }
871: } else {
872: $request->print('<p> No such file </p>');
873: return 0;
874: }
875: return 1;
876: }
877: =pod
878:
879: =item NewDir2($request, $user, $newdirectory)
880:
881: Performs phase 2 processing of directory creation. This involves creating the directory and
882: reporting the results of that creation to the user.
883:
884: Parameters:
885: =over 4
886:
887: =item $request - Apache request object [in]. Object representing the current HTTP request.
888:
889: =item $user - string [in] The name of the user that is initiating the request.
890:
891: =item $newdirectory - string [in] The full path of the directory being created.
892:
893: =back
894:
895: Returns 0 - failure 1 - success.
896:
897: =cut
898:
899: sub NewDir2 {
900: my ($request, $user, $newdirectory) = @_;
901:
902: unless(mkdir($newdirectory, 02770)) {
903: $request->print('<font color=red>Error: '.$!.'</font>');
904: return 0;
905: }
906: unless(chmod(02770, ($newdirectory))) {
907: $request->print('<font color=red> Error: '.$!.'</font>');
908: return 0;
909: }
910: return 1;
911: }
912:
913: =pod
914:
915: =item phasetwo($r, $fn, $uname, $udom)
916:
917: Controls the phase 2 processing of file management
918: requests for construction space. In phase one, the user
919: was asked to confirm the operation. In phase 2, the operation
920: is performed and the result is shown.
921:
922: The strategy is to break out the processing into specific action processors
923: named action2 where action is the requested action and the 2 denotes
924: phase 2 processing.
925:
926: Parameters:
927:
928: =over 4
929:
930: =item $r - Apache Request object [in] The request object for this httpd
931: transaction.
932:
933: =item $fn - string [in] A filename indicating the object that is being
934: manipulated.
935:
936: =item $uname - string [in] The name of the user initiating the file management
937: request.
938:
939: =item $udom - string [in] The login domain of the user initiating the
940: file management request.
941: =back
942:
943: =cut
944:
945: sub phasetwo {
946: my ($r,$fn,$uname,$udom)=@_;
947:
948: &Debug($r, "loncfile - Entering phase 2 for $fn");
949:
950: # Break down the file into it's component pieces.
951:
952: $fn=~/(.*)\/([^\/]+)\.(\w+)$/;
953: my $dir=$1; # Directory path
954: my $main=$2; # Filename.
955: my $suffix=$3; # Extension.
956:
957: my $dest; # On success this is where we'll go.
958:
959: &Debug($r,
960: "loncfile::phase2 dir = $dir main = $main suffix = $suffix");
961: &Debug($r,
962: " newfilename = ".$ENV{'form.newfilename'});
963:
964: my $conspace=$fn;
965:
966: &Debug($r,
967: "loncfile::phase2 Full construction space name: $conspace");
968:
969: &Debug($r,
970: "loncfie::phase2 action is $ENV{'form.action'}");
971:
972: # Select the appropriate processing sub.
973:
974: if ($ENV{'form.action'} eq 'rename') { # Rename.
975: if($ENV{'form.newfilename'}) {
976: if(!&Rename2($r, $uname, $dir, $fn, $ENV{'form.newfilename'})) {
977: return;
978: }
979: # Prepend the directory to the new name to form the basis of the
980: # url of the new resource.
981: #
982: $dest = $dir."/".$ENV{'form.newfilename'};
983: }
984: } elsif ($ENV{'form.action'} eq 'delete') {
985: if(!&Delete2($r, $uname, $ENV{'form.newfilename'})) {
986: return ;
987: }
988: # Once a resource is deleted, we just list the directory that
989: # previously held it.
990: #
991: $dest = $dir."/"; # Parent dir.
992: } elsif ($ENV{'form.action'} eq 'copy') {
993: if($ENV{'form.newfilename'}) {
994: if(!&Copy2($r, $uname, $dir, $fn, $ENV{'form.newfilename'})) {
995: return
996: }
997: $dest = $ENV{'form.newfilename'};
998:
999: } else {
1000: $r->print('<p>No New filename specified</form>');
1001: return;
1002: }
1003:
1004: } elsif ($ENV{'form.action'} eq 'newdir') {
1005: #
1006: # Since the newfilename form field is construction space
1007: # relative, ew need to prepend the current path; now in $fn.
1008: #
1009: my $newdir= $fn.$ENV{'form.newfilename'};
1010: if(!&NewDir2($r, $uname, $newdir)) {
1011: return;
1012: }
1013: $dest = $newdir."/"
1014: }
1015: #
1016: # Substitute for priv for the first home in $dir to get our
1017: # construction space path.
1018: #
1019: &Debug($r, "Final url is: $dest");
1020: $dest =~ s/\/home\//\/priv\//;
1021: $dest =~ s/\/public_html//;
1022:
1023: my $base = &File::Basename::basename($dest);
1024: my $dpath= &File::Basename::dirname($dest);
1025: $dest = &HTML::Entities::encode($dpath.'/'.$base);
1026:
1027:
1028: &Debug($r, "Final url after rewrite: $dest");
1029:
1030: $r->print('<h3><a href="'.$dest.'">Done</a></h3>');
1031: }
1032:
1033: sub handler {
1034:
1035: $r=shift;
1036:
1037:
1038: &Debug($r, "loncfile.pm - handler entered");
1039: &Debug($r, " filename: ".$ENV{'form.filename'});
1040: &Debug($r, " newfilename: ".$ENV{'form.newfilename'});
1041:
1042: my $fn;
1043:
1044: if ($ENV{'form.filename'}) {
1045: $fn=$ENV{'form.filename'};
1046: &Debug($r, "loncfile::handler - raw url: $fn");
1047: # $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
1048: # $fn=~s/^http\:\/\/[^\/]+//;
1049: $fn=URLToPath($fn);
1050: &Debug($r, "loncfile::handler - doctored url: $fn");
1051:
1052: } else {
1053: &Debug($r, "loncfile::handler - no form.filename");
1054: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1055: ' unspecified filename for cfile', $r->filename);
1056: return HTTP_NOT_FOUND;
1057: }
1058:
1059: unless ($fn) {
1060: &Debug($r, "loncfile::handler - doctored url is empty");
1061: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1062: ' trying to cfile non-existing file', $r->filename);
1063: return HTTP_NOT_FOUND;
1064: }
1065:
1066: # ----------------------------------------------------------- Start page output
1067: my $uname;
1068: my $udom;
1069:
1070: ($uname,$udom)=
1071: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
1072: &Debug($r,
1073: "loncfile::handler constructaccess uname = $uname domain = $udom");
1074: unless (($uname) && ($udom)) {
1075: $r->log_reason($uname.' at '.$udom.
1076: ' trying to manipulate file '.$ENV{'form.filename'}.
1077: ' ('.$fn.') - not authorized',
1078: $r->filename);
1079: return HTTP_NOT_ACCEPTABLE;
1080: }
1081:
1082: $fn=~s/\/\~(\w+)//;
1083: &Debug($r, "loncfile::handler ~ removed filename: $fn");
1084:
1085: $r->content_type('text/html');
1086: $r->send_http_header;
1087:
1088: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
1089:
1090: $r->print(
1091: '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
1092:
1093:
1094: $r->print('<h1>Construction Space <tt>'.$fn.'</tt></h1>');
1095:
1096: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
1097: $r->print('<h3><font color=red>Co-Author: '.$uname.' at '.$udom.
1098: '</font></h3>');
1099: }
1100:
1101:
1102: &Debug($r, "loncfile::handler Form action is $ENV{'form.action'} ");
1103: if ($ENV{'form.action'} eq 'delete') {
1104:
1105: $r->print('<h3>Delete</h3>');
1106: } elsif ($ENV{'form.action'} eq 'rename') {
1107: $r->print('<h3>Rename</h3>');
1108: } elsif ($ENV{'form.action'} eq 'newdir') {
1109: $r->print('<h3>New Directory</h3>');
1110: } elsif ($ENV{'form.action'} eq 'copy') {
1111: $r->print('<h3>Copy</h3>');
1112: } else {
1113: $r->print('<p>Unknown Action</body></html>');
1114: return OK;
1115: }
1116: if ($ENV{'form.phase'} eq 'two') {
1117: &Debug($r, "loncfile::handler entering phase2");
1118: &phasetwo($r,$fn,$uname,$udom);
1119: } else {
1120: &Debug($r, "loncfile::handler entering phase1");
1121: &phaseone($r,$fn,$uname,$udom);
1122: }
1123:
1124: $r->print('</body></html>');
1125: return OK;
1126: }
1127:
1128: 1;
1129: __END__
1130:
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