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loncfile.pm
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Wed Nov 19 15:06:33 2003 UTC (20 years, 6 months ago) by
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Whoops, forgot to remove some debugging information, it pollutes the log less now
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 1.45 2003/11/19 15:06:33 taceyjo1 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: =pod
37:
38: =head1 NAME
39:
40: Apache::loncfile - Construction space file management.
41:
42: =head1 SYNOPSIS
43:
44: Content handler for buttons on the top frame of the construction space
45: directory.
46:
47: =head1 INTRODUCTION
48:
49: loncfile is invoked when buttons in the top frame of the construction
50: space directory listing are clicked. All operations proceed in two phases.
51: The first phase describes to the user exactly what will be done. If the user
52: confirms the operation, the second phase commits the operation and indicates
53: completion. When the user dismisses the output of phase2, they are returned to
54: an "appropriate" directory listing in general.
55:
56: This is part of the LearningOnline Network with CAPA project
57: described at http://www.lon-capa.org.
58:
59: =head2 Subroutines
60:
61: =cut
62:
63: package Apache::loncfile;
64:
65: use strict;
66: use Apache::File;
67: use File::Basename;
68: use File::Copy;
69: use HTML::Entities();
70: use Apache::Constants qw(:common :http :methods);
71: use Apache::loncacc;
72: use Apache::Log ();
73: use Apache::lonnet;
74: use Apache::loncommon();
75:
76: my $DEBUG=0;
77: my $r; # Needs to be global for some stuff RF.
78:
79: =pod
80:
81: =item Debug($request, $message)
82:
83: If debugging is enabled puts out a debugging message determined by the
84: caller. The debug message goes to the Apache error log file. Debugging
85: is enabled by setting the module global DEBUG variable to nonzero (TRUE).
86:
87: Parameters:
88:
89: =over 4
90:
91: =item $request - The current request operation.
92:
93: =item $message - The message to put in the log file.
94:
95: =back
96:
97: Returns:
98: nothing.
99:
100: =cut
101:
102: sub Debug {
103:
104: # Marshall the parameters.
105:
106: my $r = shift;
107: my $log = $r->log;
108: my $message = shift;
109:
110: # Put out the indicated message butonly if DEBUG is true.
111:
112: if ($DEBUG) {
113: $log->debug($message);
114: }
115: }
116:
117: =pod
118:
119: =item URLToPath($url)
120:
121: Convert a URL to a file system path.
122:
123: In order to manipulate the construction space objects, it is necessary
124: to access url identified objects a filespace objects. This function
125: translates a construction space URL to a file system path.
126: Parameters:
127:
128: =over 4
129:
130: =item Url - string [in] The url to convert.
131:
132: =back
133:
134: Returns:
135:
136: =over 4
137:
138: =item The corresponding file system path.
139:
140: =back
141:
142: Global References
143:
144: =over 4
145:
146: =item $r - Request object [in] Referenced in the &Debug calls.
147:
148: =back
149:
150: =cut
151:
152: sub URLToPath {
153: my $Url = shift;
154: &Debug($r, "UrlToPath got: $Url");
155: $Url=~ s/\/+/\//g;
156: $Url=~ s/^http\:\/\/[^\/]+//;
157: $Url=~ s/^\///;
158: $Url=~ s/(\~|priv\/)(\w+)\//\/home\/$2\/public_html\//;
159: &Debug($r, "Returning $Url \n");
160: return $Url;
161: }
162:
163: sub url {
164: my $fn=shift;
165: $fn=~s/^\/home\/(\w+)\/public\_html/\/priv\/$1/;
166: return $fn;
167: }
168:
169: sub display {
170: my $fn=shift;
171: $fn=~s-^/home/(\w+)/public_html-/priv/$1-;
172: return '<tt>'.$fn.'</tt>';
173: }
174:
175: =pod
176:
177: =item exists($user, $domain, $file)
178:
179: Determine if a resource file name has been published or exists
180: in the construction space.
181:
182: Parameters:
183:
184: =over 4
185:
186: =item $user - string [in] - Name of the user for which to check.
187:
188: =item $domain - string [in] - Name of the domain in which the resource
189: might have been published.
190:
191: =item $file - string [in] - Name of the file.
192:
193: =back
194:
195: Returns:
196:
197: =over 4
198:
199: =item string - Either where the resource exists as an html string that can
200: be embedded in a dialog or an empty string if the resource
201: does not exist.
202:
203: =back
204:
205: =cut
206:
207: sub exists {
208: my ($user, $domain, $construct) = @_;
209: my $published=$construct;
210: $published=~
211: s/^\/home\/$user\/public\_html\//\/home\/httpd\/html\/res\/$domain\/$user\//;
212: my $result='';
213: if ( -d $construct ) {
214: return 'Error: destination for operation is an existing directory.';
215: }
216: if ( -e $published) {
217: $result.='<p><font color="red">Warning: target file exists, and has been published!</font></p>';
218: } elsif ( -e $construct) {
219: $result.='<p><font color="red">Warning: target file exists!</font></p>';
220: }
221: return $result;
222:
223: }
224:
225: =pod
226:
227: =item checksuffix($old, $new)
228:
229: Determine if a resource filename suffix (the stuff after the .) would change
230: as a result of this operation.
231:
232: Parameters:
233:
234: =over 4
235:
236: =item $old = string [in] Previous filename.
237:
238: =item $new = string [in] Resultant filename.
239:
240: =back
241:
242: Returns:
243:
244: =over 4
245:
246: =item Empty string if everything worked.
247:
248: =item String containing an error message if there was a problem.
249:
250: =back
251:
252: =cut
253:
254: sub checksuffix {
255: my ($old,$new) = @_;
256: my $result;
257: my $oldsuffix;
258: my $newsuffix;
259: if ($new=~m:(.*/*)([^/]+)\.(\w+)$:) { $newsuffix=$3; }
260: if ($old=~m:(.*)/+([^/]+)\.(\w+)$:) { $oldsuffix=$3; }
261: if ($oldsuffix ne $newsuffix) {
262: $result.=
263: '<p><font color="red">Warning: change of MIME type!</font></p>';
264: }
265: return $result;
266: }
267:
268: sub cleanDest {
269: my ($request,$dest)=@_;
270: #remove bad characters
271: if ($dest=~/[\#\?&]/) {
272: $request->print("<p><font color=\"red\">Invalid characters in requested name have been removed.</font></p>");
273: $dest=~s/[\#\?&]//g;
274: }
275: return $dest;
276: }
277:
278: sub relativeDest {
279: my ($fn,$newfilename,$uname)=@_;
280: if ($newfilename=~/^\//) {
281: # absolute, simply add path
282: $newfilename='/home/'.$uname.'/public_html/';
283: } else {
284: my $dir=$fn;
285: $dir=~s/\/[^\/]+$//;
286: $newfilename=$dir.'/'.$newfilename;
287: }
288: $newfilename=~s://+:/:g; # remove duplicate /
289: while ($newfilename=~m:/\.\./:) {
290: $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
291: }
292: return $newfilename;
293: }
294:
295: =pod
296:
297: =item CloseForm1($request, $user, $file)
298:
299: Close of a form on the successful completion of phase 1 processing
300:
301: Parameters:
302:
303: =over 4
304:
305: =item $request - Apache Request Object [in] - Apache server request object.
306:
307: =item $cancelurl - the url to go to on cancel.
308:
309: =back
310:
311: =cut
312:
313: sub CloseForm1 {
314: my ($request, $fn) = @_;
315: $request->print('<p><input type="submit" value="Continue" /></p></form>');
316: $request->print('<form action="'.&url($fn).
317: '" method="POST"><p><input type="submit" value="Cancel" /></p></form>');
318: }
319:
320:
321: =pod
322:
323: =item CloseForm2($request, $user, $directory)
324:
325: Successfully close off the phase 2 form.
326:
327: Parameters:
328:
329: =over 4
330:
331: =item $request - Apache Request object [in] - The request that is being
332: executed.
333:
334: =item $user - string [in] - Name of the user that is initiating the
335: request.
336:
337: =item $directory - string [in] - Directory in which the operation is
338: being done relative to the top level construction space
339: directory.
340:
341: =back
342:
343: =cut
344:
345: sub CloseForm2 {
346: my ($request, $user, $fn) = @_;
347: $request->print('<h3><a href="'.&url($fn).'/">Done</a></h3>');
348: }
349:
350: =pod
351:
352: =item Rename1($request, $filename, $user, $domain, $dir)
353:
354: Perform phase 1 processing of the file rename operation.
355:
356: Parameters:
357:
358: =over 4
359:
360: =item $request - Apache Request Object [in] The request object for the
361: current request.
362:
363: =item $filename - The filename relative to construction space.
364:
365: =item $user - Name of the user making the request.
366:
367: =item $domain - User login domain.
368:
369: =item $dir - Directory specification of the path to the file.
370:
371: =back
372:
373: Side effects:
374:
375: =over 4
376:
377: =item A new form is displayed prompting for confirmation. The newfilename
378: hidden field of this form is loaded with
379: new filename relative to the current directory ($dir).
380:
381: =back
382:
383: =cut
384:
385: sub Rename1 {
386: my ($request, $user, $domain, $fn, $newfilename) = @_;
387:
388: if(-e $fn) {
389: if($newfilename) {
390: # is dest a dir
391: if (-d $newfilename) {
392: if ($fn =~ m|/([^/]*)$|) { $newfilename .= '/'.$1; }
393: }
394: if ($newfilename =~ m|/[^\.]+$|) {
395: #no extension add on original extension
396: if ($fn =~ m|/[^\.]*\.([^\.]+)$|) {
397: $newfilename.='.'.$1;
398: }
399: }
400: $request->print(&checksuffix($fn, $newfilename));
401: #renaming a dir, delete the trailing /
402: #remove second to last element for current dir
403: if (-d $fn) {
404: $newfilename=~s/\/[^\/]+\/([^\/]+)$/\/$1/;
405: }
406: $newfilename=~s://+:/:g; # remove duplicate /
407: while ($newfilename=~m:/\.\./:) {
408: $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
409: }
410: my $return=&exists($user, $domain, $newfilename);
411: $request->print($return);
412: if ($return =~/^Error:/) {
413: $request->print('<br /><a href="'.&url($fn).'">Cancel</a>');
414: return;
415: }
416: $request->print('<input type="hidden" name="newfilename" value="'.
417: $newfilename.
418: '" /><p>Rename '.&display($fn).
419: '</tt><br />to '.&display($newfilename).'?</p>');
420: &CloseForm1($request, $fn);
421: } else {
422: $request->print('<p>No new filename specified.</p></form>');
423: return;
424: }
425: } else {
426: $request->print('<p> No such file: '.&display($fn).'</p></form>');
427: return;
428: }
429:
430: }
431: =pod
432:
433: =item Delete1
434:
435: Performs phase 1 processing of the delete operation. In phase one
436: we just check to be sure the file exists.
437:
438: Parameters:
439:
440: =over 4
441:
442: =item $request - Apache Request Object [in] request object for the current
443: request.
444:
445: =item $user - string [in] Name of the user initiating the request.
446:
447: =item $domain - string [in] Domain the initiating user is logged in as
448:
449: =item $filename - string [in] Source filename.
450:
451: =back
452:
453: =cut
454:
455: sub Delete1 {
456: my ($request, $user, $domain, $fn) = @_;
457:
458: if( -e $fn) {
459: $request->print('<input type="hidden" name="newfilename" value="'.
460: $fn.'"/>');
461: $request->print('<p>Delete '.&display($fn).'?</p>');
462: &CloseForm1($request, $fn);
463: } else {
464: $request->print('<p>No such file: '.&display($fn).'</p></form>');
465: }
466: }
467:
468: =pod
469:
470: =item Copy1($request, $user, $domain, $filename, $newfilename)
471:
472: Performs phase 1 processing of the construction space copy command.
473: Ensure that the source file exists. Ensure that a destination exists,
474: also warn if the destination already exists.
475:
476: Parameters:
477:
478: =over 4
479:
480: =item $request - Apache Request Object [in] request object for the current
481: request.
482:
483: =item $user - string [in] Name of the user initiating the request.
484:
485: =item $domain - string [in] Domain the initiating user is logged in as
486:
487: =item $fn - string [in] Source filename.
488:
489: =item $newfilename-string [in] Destination filename.
490:
491: =back
492:
493: =cut
494:
495: sub Copy1 {
496: my ($request, $user, $domain, $fn, $newfilename) = @_;
497:
498: if(-e $fn) {
499: # is dest a dir
500: if (-d $newfilename) {
501: if ($fn =~ m|/([^/]*)$|) { $newfilename .= '/'.$1; }
502: }
503: if ($newfilename =~ m|/[^\.]+$|) {
504: #no extension add on original extension
505: if ($fn =~ m|/[^\.]*\.([^\.]+)$|) { $newfilename.='.'.$1; }
506: }
507: $newfilename=~s://+:/:g; # remove duplicate /
508: while ($newfilename=~m:/\.\./:) {
509: $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
510: }
511: $request->print(&checksuffix($fn,$newfilename));
512: my $return=&exists($user, $domain, $newfilename);
513: $request->print($return);
514: if ($return =~/^Error:/) {
515: $request->print('<br /><a href="'.&url($fn).'">Cancel</a>');
516: return;
517: }
518: $request->print('<input type="hidden" name="newfilename" value="'.
519: $newfilename.
520: '" /><p>Copy '.&display($fn).'<br />to '.
521: &display($newfilename).'?</p>');
522: &CloseForm1($request, $fn);
523: } else {
524: $request->print('<p>No such file: '.&display($fn).'</p></form>');
525: }
526: }
527:
528: =pod
529:
530: =item NewDir1
531:
532: Does all phase 1 processing of directory creation:
533: Ensures that the user provides a new directory name,
534: and that the directory does not already exist.
535:
536: Parameters:
537:
538: =over 4
539:
540: =item $request - Apache Request Object [in] - Server request object for the
541: current url.
542:
543: =item $username - Name of the user that is requesting the directory creation.
544:
545: =item $domain - Domain user is in
546:
547: =item $fn - source file.
548:
549: =item $newdir - Name of the directory to be created; path relative to the
550: top level of construction space.
551: =back
552:
553: Side Effects:
554:
555: =over 4
556:
557: =item A new form is displayed. Clicking on the confirmation button
558: causes the newdir operation to transition into phase 2. The hidden field
559: "newfilename" is set with the construction space path to the new directory.
560:
561:
562: =back
563:
564: =cut
565:
566:
567: sub NewDir1
568: {
569: my ($request, $username, $domain, $fn, $newfilename) = @_;
570:
571: my $result=&exists($username,$domain,$newfilename);
572: if ($result) {
573: $request->print('<font color="red">'.$result.'</font></form>');
574: } else {
575: $request->print('<input type="hidden" name="newfilename" value="'.
576: $newfilename.'" /><p>Make new directory '.
577: &display($newfilename).'?</p>');
578: &CloseForm1($request, $fn);
579: }
580: }
581:
582:
583: sub Decompress1 {
584: my ($request, $user, $domain, $fn) = @_;
585: if( -e $fn) {
586: $request->print('<input type="hidden" name="newfilename" value="'.$fn.'"/>');
587: $request->print('<p>Decompress '.&display($fn).'?</p>');
588: &CloseForm1($request, $fn);
589: } else {
590: $request->print('<p>No such file: '.&display($fn).'</p></form>');
591: }
592: }
593: =pod
594:
595: =item NewFile1
596:
597: Does all phase 1 processing of file creation:
598: Ensures that the user provides a new filename, adds proper extension
599: if needed and that the file does not already exist, if it is a html,
600: problem, page, or sequence, it then creates a form link to hand the
601: actual creation off to the proper handler.
602:
603: Parameters:
604:
605: =over 4
606:
607: =item $request - Apache Request Object [in] - Server request object for the
608: current url.
609:
610: =item $username - Name of the user that is requesting the directory creation.
611:
612: =item $domain - Name of the domain of the user
613:
614: =item $fn - Source file name
615:
616: =item $newfilename
617: - Name of the file to be created; no path information
618: =back
619:
620: Side Effects:
621:
622: =over 4
623:
624: =item 2 new forms are displayed. Clicking on the confirmation button
625: causes the browser to attempt to load the specfied URL, allowing the
626: proper handler to take care of file creation. There is also a Cancel
627: button which returns you to the driectory listing you came from
628:
629: =back
630:
631: =cut
632:
633:
634: sub NewFile1 {
635: my ($request, $user, $domain, $fn, $newfilename) = @_;
636:
637: if ($ENV{'form.action'} =~ /new(.+)file/) {
638: my $extension=$1;
639:
640: ##Informs User (name).(number).(extension) not allowed
641: if($newfilename =~ /\.(\d+)\.(\w+)$/){
642: $r->print('<font color="red">'.$newfilename.
643: ' - Bad Filename<br />(name).(number).(extension)'.
644: ' Not Allowed</font>');
645: return;
646: }
647: if ($newfilename !~ /\Q.$extension\E$/) {
648: if ($newfilename =~ m|^[^\.]*\.([^\.]+)$|) {
649: #already has an extension strip it and add in expected one
650: $newfilename =~ s|.([^\.]+)$||;
651: }
652: $newfilename.=".$extension";
653: }
654: }
655: my $result=&exists($user,$domain,$newfilename);
656: if($result) {
657: $request->print('<font color="red">'.$result.'</font></form>');
658: } else {
659: $request->print('<p>Make new file '.&display($newfilename).'?</p>');
660: $request->print('</form>');
661: $request->print('<form action="'.&url($newfilename).
662: '" method="POST"><p><input type="submit" value="Continue" /></p></form>');
663: $request->print('<form action="'.&url($fn).
664: '" method="POST"><p><input type="submit" value="Cancel" /></p></form>');
665: }
666: }
667:
668: =pod
669:
670: =item phaseone($r, $fn, $uname, $udom)
671:
672: Peforms phase one processing of the request. In phase one, error messages
673: are returned if the request cannot be performed (e.g. attempts to manipulate
674: files that are nonexistent). If the operation can be performed, what is
675: about to be done will be presented to the user for confirmation. If the
676: user confirms the request, then phase two is executed, the action
677: performed and reported to the user.
678:
679: Parameters:
680:
681: =over 4
682:
683: =item $r - request object [in] - The Apache request being executed.
684:
685: =item $fn = string [in] - The filename being manipulated by the
686: request.
687:
688: =item $uname - string [in] Name of user logged in and doing this action.
689:
690: =item $udom - string [in] Domain name under which the user logged in.
691:
692: =back
693:
694: =cut
695:
696: sub phaseone {
697: my ($r,$fn,$uname,$udom)=@_;
698:
699: my $newfilename=&cleanDest($r,$ENV{'form.newfilename'});
700: $newfilename=&relativeDest($fn,$newfilename,$uname);
701: $r->print('<form action="/adm/cfile" method="post">'.
702: '<input type="hidden" name="qualifiedfilename" value="'.$fn.'" />'.
703: '<input type="hidden" name="phase" value="two" />'.
704: '<input type="hidden" name="action" value="'.$ENV{'form.action'}.'" />');
705:
706: if ($ENV{'form.action'} eq 'rename') {
707: &Rename1($r, $uname, $udom, $fn, $newfilename);
708: } elsif ($ENV{'form.action'} eq 'delete') {
709: &Delete1($r, $uname, $udom, $fn);
710: } elsif ($ENV{'form.action'} eq 'decompress') {
711: &Decompress1($r, $uname, $udom, $fn);
712: } elsif ($ENV{'form.action'} eq 'copy') {
713: if($newfilename) {
714: &Copy1($r, $uname, $udom, $fn, $newfilename);
715: } else {
716: $r->print('<p>No new filename specified.</p></form>');
717: }
718: } elsif ($ENV{'form.action'} eq 'newdir') {
719: &NewDir1($r, $uname, $udom, $fn, $newfilename);
720: } elsif ($ENV{'form.action'} eq 'newfile' ||
721: $ENV{'form.action'} eq 'newhtmlfile' ||
722: $ENV{'form.action'} eq 'newproblemfile' ||
723: $ENV{'form.action'} eq 'newpagefile' ||
724: $ENV{'form.action'} eq 'newsequencefile' ||
725: $ENV{'form.action'} eq 'newrightsfile' ||
726: $ENV{'form.action'} eq 'newstyfile' ||
727: $ENV{'form.action'} eq 'Select Action') {
728: if ($newfilename) {
729: &NewFile1($r, $uname, $udom, $fn, $newfilename);
730: } else {
731: $r->print('<p>No new filename specified.</p></form>');
732: }
733: }
734: }
735:
736: =pod
737:
738: =item Rename2($request, $user, $directory, $oldfile, $newfile)
739:
740: Performs phase 2 processing of a rename reequest. This is where the
741: actual rename is performed.
742:
743: Parameters
744:
745: =over 4
746:
747: =item $request - Apache request object [in] The request being processed.
748:
749: =item $user - string [in] The name of the user initiating the request.
750:
751: =item $directory - string [in] The name of the directory relative to the
752: construction space top level of the renamed file.
753:
754: =item $oldfile - Name of the file.
755:
756: =item $newfile - Name of the new file.
757:
758: =back
759:
760: Returns:
761:
762: =over 4
763:
764: =item 1 Success.
765:
766: =item 0 Failure.
767:
768: =cut
769:
770: sub Rename2 {
771:
772: my ($request, $user, $directory, $oldfile, $newfile) = @_;
773:
774: &Debug($request, "Rename2 directory: ".$directory." old file: ".$oldfile.
775: " new file ".$newfile."\n");
776: &Debug($request, "Target is: ".$directory.'/'.
777: $newfile);
778: if (-e $oldfile) {
779:
780: my $oRN=$oldfile;
781: my $nRN=$newfile;
782: unless (rename($oldfile,$newfile)) {
783: $request->print('<font color="red">Error: '.$!.'</font>');
784: return 0;
785: }
786: ## If old name.(extension) exits, move under new name.
787: ## If it doesn't exist and a new.(extension) exists
788: ## delete it (only concern when renaming over files)
789: my $tmp1=$oRN.'.meta';
790: my $tmp2=$nRN.'.meta';
791: if(-e $tmp1){
792: unless(rename($tmp1,$tmp2)){ }
793: } elsif(-e $tmp2){
794: unlink $tmp2;
795: }
796: $tmp1=$oRN.'.save';
797: $tmp2=$nRN.'.save';
798: if(-e $tmp1){
799: unless(rename($tmp1,$tmp2)){ }
800: } elsif(-e $tmp2){
801: unlink $tmp2;
802: }
803: $tmp1=$oRN.'.log';
804: $tmp2=$nRN.'.log';
805: if(-e $tmp1){
806: unless(rename($tmp1,$tmp2)){ }
807: } elsif(-e $tmp2){
808: unlink $tmp2;
809: }
810: $tmp1=$oRN.'.bak';
811: $tmp2=$nRN.'.bak';
812: if(-e $tmp1){
813: unless(rename($tmp1,$tmp2)){ }
814: } elsif(-e $tmp2){
815: unlink $tmp2;
816: }
817: } else {
818: $request->print("<p> No such file: ".&display($oldfile).'</p></form>');
819: return 0;
820: }
821: return 1;
822: }
823: =pod
824:
825: =item Delete2($request, $user, $filename)
826:
827: Performs phase two of a delete. The user has confirmed that they want
828: to delete the selected file. The file is deleted and the results of the
829: delete attempt are indicated.
830:
831: Parameters:
832:
833: =over 4
834:
835: =item $request - Apache Request object [in] the request object for the current
836: delete operation.
837:
838: =item $user - string [in] The name of the user initiating the delete
839: request.
840:
841: =item $filename - string [in] The name of the file, relative to construction
842: space, to delete.
843:
844: =back
845:
846: Returns:
847: 1 - success.
848: 0 - Failure.
849:
850: =cut
851:
852: sub Delete2 {
853: my ($request, $user, $filename) = @_;
854:
855: if(-e $filename) {
856: unless(unlink($filename)) {
857: $request->print('<font color="red">Error: '.$!.'</font>');
858: return 0;
859: }
860: } else {
861: $request->print('<p> No such file. </p></form');
862: return 0;
863: }
864: return 1;
865: }
866:
867: =pod
868:
869: =item Copy2($request, $username, $dir, $oldfile, $newfile)
870:
871: Performs phase 2 of a copy. The file is copied and the status
872: of that copy is reported back to the user.
873:
874: =over 4
875:
876: =item $request - Apache request object [in]; the apache request currently
877: being executed.
878:
879: =item $username - string [in] Name of the user who is requesting the copy.
880:
881: =item $dir - string [in] Directory path relative to the construction space
882: of the destination file.
883:
884: =item $oldfile - string [in] Name of the source file.
885:
886: =item $newfile - string [in] Name of the destination file.
887:
888:
889: =back
890:
891: Returns 0 failure, and 0 successs.
892:
893: =cut
894:
895: sub Copy2 {
896: my ($request, $username, $dir, $oldfile, $newfile) = @_;
897: &Debug($request ,"Will try to copy $oldfile to $newfile");
898: if(-e $oldfile) {
899: unless (copy($oldfile, $newfile)) {
900: $request->print('<font color="red"> copy Error: '.$!.'</font>');
901: return 0;
902: } else {
903: unless (chmod(0660, $newfile)) {
904: $request->print('<font color="red"> chmod error: '.$!.'</font>');
905: return 0;
906: }
907: return 1;
908: }
909: } else {
910: $request->print('<p> No such file </p>');
911: return 0;
912: }
913: return 1;
914: }
915: =pod
916:
917: =item NewDir2($request, $user, $newdirectory)
918:
919: Performs phase 2 processing of directory creation. This involves creating the directory and
920: reporting the results of that creation to the user.
921:
922: Parameters:
923: =over 4
924:
925: =item $request - Apache request object [in]. Object representing the current HTTP request.
926:
927: =item $user - string [in] The name of the user that is initiating the request.
928:
929: =item $newdirectory - string [in] The full path of the directory being created.
930:
931: =back
932:
933: Returns 0 - failure 1 - success.
934:
935: =cut
936:
937: sub NewDir2 {
938: my ($request, $user, $newdirectory) = @_;
939:
940: unless(mkdir($newdirectory, 02770)) {
941: $request->print('<font color="red">Error: '.$!.'</font>');
942: return 0;
943: }
944: unless(chmod(02770, ($newdirectory))) {
945: $request->print('<font color="red"> Error: '.$!.'</font>');
946: return 0;
947: }
948: return 1;
949: }
950: sub decompress2 {
951: my ($r, $user, $dir, $file) = @_;
952: &Apache::lonnet::appenv('cgi.file' => $file);
953: &Apache::lonnet::appenv('cgi.dir' => $dir);
954: my $result=&Apache::lonnet::ssi_body('/cgi-bin/decompress.pl');
955: $r->print($result);
956: &Apache::lonnet::delenv('cgi.file');
957: &Apache::lonnet::delenv('cgi.dir');
958: return 1;
959: }
960: =pod
961:
962: =item phasetwo($r, $fn, $uname, $udom)
963:
964: Controls the phase 2 processing of file management
965: requests for construction space. In phase one, the user
966: was asked to confirm the operation. In phase 2, the operation
967: is performed and the result is shown.
968:
969: The strategy is to break out the processing into specific action processors
970: named action2 where action is the requested action and the 2 denotes
971: phase 2 processing.
972:
973: Parameters:
974:
975: =over 4
976:
977: =item $r - Apache Request object [in] The request object for this httpd
978: transaction.
979:
980: =item $fn - string [in] A filename indicating the object that is being
981: manipulated.
982:
983: =item $uname - string [in] The name of the user initiating the file management
984: request.
985:
986: =item $udom - string [in] The login domain of the user initiating the
987: file management request.
988: =back
989:
990: =cut
991:
992: sub phasetwo {
993: my ($r,$fn,$uname,$udom)=@_;
994:
995: &Debug($r, "loncfile - Entering phase 2 for $fn");
996:
997: # Break down the file into it's component pieces.
998:
999: my $dir; # Directory path
1000: my $main; # Filename.
1001: my $suffix; # Extension.
1002:
1003: if ($fn=~m:(.*)/([^/]+)\.(\w+)$:) {
1004: $dir=$1; # Directory path
1005: $main=$2; # Filename.
1006: $suffix=$3; # Extension.
1007: }
1008:
1009: my $dest; # On success this is where we'll go.
1010:
1011: &Debug($r,
1012: "loncfile::phase2 dir = $dir main = $main suffix = $suffix");
1013: &Debug($r,
1014: " newfilename = ".$ENV{'form.newfilename'});
1015:
1016: my $conspace=$fn;
1017:
1018: &Debug($r,
1019: "loncfile::phase2 Full construction space name: $conspace");
1020:
1021: &Debug($r,
1022: "loncfie::phase2 action is $ENV{'form.action'}");
1023:
1024: # Select the appropriate processing sub.
1025: if ($ENV{'form.action'} eq 'decompress') {
1026: $main .= '.';
1027: $main .= $suffix;
1028: if(!&decompress2($r, $uname, $dir, $main)) {
1029: return ;
1030: }
1031: $dest = $dir."/.";
1032:
1033:
1034: } elsif ($ENV{'form.action'} eq 'rename') { # Rename.
1035: if($ENV{'form.newfilename'}) {
1036: if (!defined($dir)) {
1037: $fn=~m:^(.*)/:;
1038: $dir=$1;
1039: }
1040: if(!&Rename2($r, $uname, $dir, $fn, $ENV{'form.newfilename'})) {
1041: return;
1042: }
1043: $dest = &url($ENV{'form.newfilename'});
1044: }
1045: } elsif ($ENV{'form.action'} eq 'delete') {
1046: if(!&Delete2($r, $uname, $ENV{'form.newfilename'})) {
1047: return ;
1048: }
1049: # Once a resource is deleted, we just list the directory that
1050: # previously held it.
1051: #
1052: $dest = $dir."/."; # Parent dir.
1053: } elsif ($ENV{'form.action'} eq 'copy') {
1054: if($ENV{'form.newfilename'}) {
1055: if(!&Copy2($r, $uname, $dir, $fn, $ENV{'form.newfilename'})) {
1056: return ;
1057: }
1058: $dest = $ENV{'form.newfilename'};
1059:
1060: } else {
1061: $r->print('<p>No New filename specified</p></form>');
1062: return;
1063: }
1064:
1065: } elsif ($ENV{'form.action'} eq 'newdir') {
1066: my $newdir= $ENV{'form.newfilename'};
1067: if(!&NewDir2($r, $uname, $newdir)) {
1068: return;
1069: }
1070: $dest = $newdir."/"
1071: }
1072: $r->print('<h3><a href="'.&url($dest).'">Done</a></h3>');
1073: }
1074:
1075: sub handler {
1076:
1077: $r=shift;
1078:
1079:
1080: &Debug($r, "loncfile.pm - handler entered");
1081: &Debug($r, " filename: ".$ENV{'form.filename'});
1082: &Debug($r, " newfilename: ".$ENV{'form.newfilename'});
1083: #
1084: # Determine the root filename
1085: # This could come in as "filename", which actually is a URL, or
1086: # as "qualifiedfilename", which is indeed a real filename in filesystem
1087: #
1088: my $fn;
1089:
1090: if ($ENV{'form.filename'}) {
1091:
1092: &Debug($r, "test: $ENV{'form.filename'}");
1093: $fn=&Apache::lonnet::unescape($ENV{'form.filename'});
1094: $fn=&URLToPath($fn);
1095: }
1096: #Just hijack the script only the first time around to inject the correct information for further processing
1097: elsif($ENV{'QUERY_STRING'} && $ENV{'form.phase'} ne 'two') {
1098: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['decompress']);
1099: $fn=&Apache::lonnet::unescape($ENV{'form.decompress'});
1100: $fn=&URLToPath($fn);
1101: $ENV{'form.action'}="decompress";
1102: }
1103:
1104: elsif ($ENV{'form.qualifiedfilename'}) {
1105: $fn=$ENV{'form.qualifiedfilename'};
1106: } else {
1107: &Debug($r, "loncfile::handler - no form.filename");
1108: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1109: ' unspecified filename for cfile', $r->filename);
1110: return HTTP_NOT_FOUND;
1111: }
1112:
1113: unless ($fn) {
1114: &Debug($r, "loncfile::handler - doctored url is empty");
1115: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
1116: ' trying to cfile non-existing file', $r->filename);
1117: return HTTP_NOT_FOUND;
1118: }
1119:
1120: # ----------------------------------------------------------- Start page output
1121: my $uname;
1122: my $udom;
1123:
1124: ($uname,$udom)=
1125: &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
1126: &Debug($r,
1127: "loncfile::handler constructaccess uname = $uname domain = $udom");
1128: unless (($uname) && ($udom)) {
1129: $r->log_reason($uname.' at '.$udom.
1130: ' trying to manipulate file '.$ENV{'form.filename'}.
1131: ' ('.$fn.') - not authorized',
1132: $r->filename);
1133: return HTTP_NOT_ACCEPTABLE;
1134: }
1135:
1136:
1137: $r->content_type('text/html');
1138: $r->send_http_header;
1139:
1140: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
1141:
1142: $r->print(&Apache::loncommon::bodytag('Construction Space File Operation'));
1143:
1144:
1145: $r->print('<h3>Location: '.&display($fn).'</h3>');
1146:
1147: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
1148: $r->print('<h3><font color="red">Co-Author: '.$uname.' at '.$udom.
1149: '</font></h3>');
1150: }
1151:
1152:
1153: &Debug($r, "loncfile::handler Form action is $ENV{'form.action'} ");
1154: if ($ENV{'form.action'} eq 'delete') {
1155:
1156: $r->print('<h3>Delete</h3>');
1157: } elsif ($ENV{'form.action'} eq 'rename') {
1158: $r->print('<h3>Rename</h3>');
1159: } elsif ($ENV{'form.action'} eq 'newdir') {
1160: $r->print('<h3>New Directory</h3>');
1161: } elsif ($ENV{'form.action'} eq 'decompress') {
1162: $r->print('<h3>Decompress</h3>');
1163: } elsif ($ENV{'form.action'} eq 'copy') {
1164: $r->print('<h3>Copy</h3>');
1165: } elsif ($ENV{'form.action'} eq 'newfile' ||
1166: $ENV{'form.action'} eq 'newhtmlfile' ||
1167: $ENV{'form.action'} eq 'newproblemfile' ||
1168: $ENV{'form.action'} eq 'newpagefile' ||
1169: $ENV{'form.action'} eq 'newsequencefile' ||
1170: $ENV{'form.action'} eq 'newrightsfile' ||
1171: $ENV{'form.action'} eq 'newstyfile' ||
1172: $ENV{'form.action'} eq 'Select Action' ) {
1173: $r->print('<h3>New Resource</h3>');
1174: } else {
1175: $r->print('<p>Unknown Action '.$ENV{'form.action'}.' </p></body></html>');
1176: return OK;
1177: }
1178: if ($ENV{'form.phase'} eq 'two') {
1179: &Debug($r, "loncfile::handler entering phase2");
1180: &phasetwo($r,$fn,$uname,$udom);
1181: } else {
1182: &Debug($r, "loncfile::handler entering phase1");
1183: &phaseone($r,$fn,$uname,$udom);
1184: }
1185:
1186: $r->print('</body></html>');
1187: return OK;
1188: }
1189:
1190: 1;
1191: __END__
1192:
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