File:  [LON-CAPA] / loncom / publisher / loncfile.pm
Revision 1.121: download - view: text, annotated - select for diffs
Tue Jul 23 13:40:20 2013 UTC (10 years, 9 months ago) by bisitz
Branches: MAIN
CVS tags: version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, HEAD
Corrected typo in loncfile.pm 1.120 - wrong sub routine name (bug #6168)

    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 1.121 2013/07/23 13:40:20 bisitz 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 - Authoring 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::lonnet;
   72: use Apache::loncommon();
   73: use Apache::lonlocal;
   74: use LONCAPA qw(:DEFAULT :match);
   75: 
   76: 
   77: my $DEBUG=0;
   78: my $r;				# Needs to be global for some stuff RF.
   79: 
   80: =pod
   81: 
   82: =item Debug($request, $message)
   83: 
   84:   If debugging is enabled puts out a debugging message determined by the
   85:   caller.  The debug message goes to the Apache error log file. Debugging
   86:   is enabled by setting the module global DEBUG variable to nonzero (TRUE).
   87: 
   88:  Parameters:
   89: 
   90: =over 4
   91:  
   92: =item $request - The current request operation.
   93: 
   94: =item $message - The message to put in the log file.
   95: 
   96: =back
   97:   
   98:  Returns:
   99:    nothing.
  100: 
  101: =cut
  102: 
  103: sub Debug {
  104:     # Put out the indicated message but only if DEBUG is true.
  105:     if ($DEBUG) {
  106: 	my ($r,$message) = @_;
  107: 	$r->log_reason($message);
  108:     }
  109: }
  110: 
  111: sub done {
  112:     my ($url) = @_;
  113:     return
  114:        '<p>'
  115:       .&Apache::lonhtmlcommon::confirm_success(&mt("Done"))
  116:       .'<br /><a href="'.$url.'">'.&mt("Continue").'</a>'
  117:       .'<script type="text/javascript">'
  118:       .'location.href="'.$url.'";'
  119:       .'</script>'
  120:       .'</p>';
  121: }
  122: 
  123: =pod
  124: 
  125: =item URLToPath($url)
  126: 
  127:   Convert a URL to a file system path.
  128:   
  129:   In order to manipulate the construction space objects, it is necessary
  130:   to access url identified objects a filespace objects.  This function
  131:   translates a construction space URL to a file system path.
  132:  Parameters:
  133: 
  134: =over 4
  135: 
  136: =item  Url    - string [in] The url to convert.
  137:   
  138: =back
  139:   
  140:  Returns:
  141: 
  142: =over 4
  143: 
  144: =item  The corresponding file system path. 
  145: 
  146: =back
  147: 
  148: Global References
  149: 
  150: =over 4
  151: 
  152: =item  $r      - Request object [in] Referenced in the &Debug calls.
  153: 
  154: =back
  155: 
  156: =cut
  157: 
  158: sub URLToPath {
  159:     my $Url = shift;
  160:     &Debug($r, "UrlToPath got: $Url");
  161:     $Url=~ s{^https?\://[^/]+}{};
  162:     $Url=~ s{//+}{/}g;
  163:     $Url=~ s{^/}{};
  164:     $Url=$Apache::lonnet::perlvar{'lonDocRoot'}."/$Url";
  165:     &Debug($r, "Returning $Url \n");
  166:     return $Url;
  167: }
  168: 
  169: sub url {
  170:     my $fn=shift;
  171:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  172:     $fn=~ s/^\Q$londocroot\E//;
  173:     $fn=~s{/\./}{/}g;
  174:     $fn=&HTML::Entities::encode($fn,'<>"&');
  175:     return $fn;
  176: }
  177: 
  178: sub display {
  179:     my $fn=shift;
  180:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  181:     $fn=~s/^\Q$londocroot\E//;
  182:     $fn=~s{/\./}{/}g;
  183:     return '<span class="LC_filename">'.$fn.'</span>';
  184: }
  185: 
  186: 
  187: # see if the file is
  188: # a) published (return 0 if not)
  189: # b) if, so obsolete (return 0 if not)
  190: 
  191: sub obsolete_unpub {
  192:     my ($user,$domain,$construct)=@_;
  193:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  194:     my $published=$construct;
  195:     $published=~s{^\Q$londocroot/priv/\E}{$londocroot/res/};
  196:     if (-e $published) {
  197: 	if (&Apache::lonnet::metadata($published,'obsolete')) {
  198: 	    return 1;
  199: 	}
  200: 	return 0;
  201:     } else {
  202: 	return 1;
  203:     }
  204: }
  205: 
  206: # see if directory is empty
  207: # ignores any .meta, .save, .bak, and .log files created for a previously
  208: # published file, which has since been marked obsolete and deleted.
  209: # ignores a .DS_Store file put there when viewing directory via webDAV on MacOS. 
  210: sub empty_directory {
  211:     my ($dirname,$phase) = @_;
  212:     if (opendir DIR, $dirname) {
  213:         my @files = grep(!/^\.\.?$/, readdir(DIR)); # ignore . and ..
  214:         if (@files) { 
  215:             my @orphans = grep(/\.(meta|save|log|bak|DS_Store)$/,@files);
  216:             if (scalar(@files) - scalar(@orphans) > 0) { 
  217:                 return 0;
  218:             } else {
  219:                 if (($phase eq 'Delete2') && (@orphans > 0)) {
  220:                     foreach my $file (@orphans) {
  221:                         if ($file =~ /\.(meta|save|log|bak)$/) {
  222:                             unlink($dirname.$file);
  223:                         }
  224:                     }
  225:                 }
  226:             }
  227:         }
  228:         closedir(DIR);
  229:         return 1;
  230:     }
  231:     return 0;
  232: }
  233: 
  234: =pod
  235: 
  236: =item exists($user, $domain, $file)
  237: 
  238:    Determine if a resource filename has been published or exists
  239:    in the construction space.
  240: 
  241:  Parameters:
  242: 
  243: =over 4
  244: 
  245: =item  $user     - string [in] - Name of the user for which to check.
  246: 
  247: =item  $domain   - string [in] - Name of the domain in which the resource
  248:                           might have been published.
  249: 
  250: =item  $file     - string [in] - Name of the file.
  251: 
  252: =item  $creating - string [in] - optional, type of object being created,
  253:                                either 'directory' or 'file'. Defaults to
  254:                                'file' if unspecified.
  255: 
  256: =back
  257: 
  258: Returns:
  259: 
  260: =over 4
  261: 
  262: =item  string - Either undef, 'warning' or 'error' depending on the
  263:                 type of problem
  264: 
  265: =item  string - Either where the resource exists as an html string that can
  266:            be embedded in a dialog or an empty string if the resource
  267:            does not exist.
  268:   
  269: =back
  270: 
  271: =cut
  272: 
  273: sub exists {
  274:     my ($user, $domain, $construct, $creating) = @_;
  275:     $creating ||= 'file';
  276: 
  277:     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  278:     my $published=$construct;
  279:     $published=~s{^\Q$londocroot/priv/\E}{$londocroot/res/};
  280:     my ($type,$result);
  281:     if ( -d $construct ) {
  282: 	return ('error','<p><span class="LC_error">'.&mt('Error: destination for operation is an existing directory.').'</span></p>');
  283: 	
  284:     }
  285: 
  286:     if ( -e $published) {
  287: 	if ( -e $construct ) {
  288: 	    $type = 'warning';
  289: 	    $result.='<p><span class="LC_warning">'.&mt('Warning: target file exists, and has been published!').'</span></p>';
  290: 	} else {
  291: 	    my $published_type = (-d $published) ? 'directory' : 'file';
  292: 
  293: 	    if ($published_type eq $creating) {
  294: 		$type = 'warning';
  295: 		$result.='<p><span class="LC_warning">'.&mt("Warning: a published $published_type of this name exists.").'</span></p>';
  296: 	    } else {
  297: 		$type = 'error';
  298: 		$result.='<p><span class="LC_error">'.&mt("Error: a published $published_type of this name exists.").'</span></p>';
  299: 	    }
  300: 	}
  301:     } elsif ( -e $construct) {
  302: 	$type = 'warning';
  303: 	$result.='<p><span class="LC_warning">'.&mt('Warning: target file exists!').'</span></p>';
  304:     }
  305: 
  306:     return ($type,$result);
  307: }
  308: 
  309: =pod
  310: 
  311: =item checksuffix($old, $new)
  312:         
  313:   Determine if a resource filename suffix (the stuff after the .) would change
  314: as a result of this operation.
  315: 
  316:  Parameters:
  317: 
  318: =over 4
  319: 
  320: =item  $old   = string [in]  Previous filename.
  321: 
  322: =item  $new   = string [in]  Resultant filename.
  323: 
  324: =back
  325: 
  326:  Returns:
  327: 
  328: =over 4
  329: 
  330: =item    Empty string if everything worked.
  331: 
  332: =item    String containing an error message if there was a problem.
  333: 
  334: =back
  335: 
  336: =cut
  337: 
  338: sub checksuffix {
  339:     my ($old,$new) = @_;
  340:     my $result;
  341:     my $oldsuffix;
  342:     my $newsuffix;
  343:     if ($new=~m:(.*/*)([^/]+)\.(\w+)$:) { $newsuffix=$3; }
  344:     if ($old=~m:(.*)/+([^/]+)\.(\w+)$:) { $oldsuffix=$3; }
  345:     if (lc($oldsuffix) ne lc($newsuffix)) {
  346: 	$result.=
  347:             '<p><span class="LC_warning">'.&mt('Warning: change of MIME type!').'</span></p>';
  348:     }
  349:     return $result;
  350: }
  351: 
  352: sub cleanDest {
  353:     my ($request,$dest,$subdir,$fn,$uname,$udom)=@_;
  354:     #remove bad characters
  355:     my $foundbad=0;
  356:     my $error='';
  357:     if ($subdir && $dest =~/\./) {
  358: 	$foundbad=1;
  359: 	$dest=~s/\.//g;
  360:     }
  361:     $dest =~ s/(\s+$|^\s+)//g;
  362:     if  ($dest=~/[\#\?&%\":]/) {
  363: 	$foundbad=1;
  364: 	$dest=~s/[\#\?&%\":]//g;
  365:     }
  366:     if ($dest=~m|/|) {
  367: 	my ($newpath)=($dest=~m|(.*)/|);
  368: 	($newpath,$error)=&relativeDest($fn,$newpath,$uname,$udom);
  369: 	if (! -d "$newpath") {
  370: 	    $request->print('<p><span class="LC_warning">'
  371:                            .&mt("You have requested to create file in directory [_1] which doesn't exist. The requested directory path has been removed from the requested filename."
  372:                                ,&display($newpath))
  373:                            .'</span></p>');
  374: 	    $dest=~s|.*/||;
  375: 	}
  376:     }
  377:     if ($dest =~ /\.(\d+)\.(\w+)$/){
  378: 	$request->print('<p><span class="LC_warning">'
  379: 			.&mt('Bad filename [_1]',&display($dest))
  380:                         .'<br />'
  381:                         .&mt('[_1](name).(number).(extension)[_2] not allowed.','<tt>','</tt>')
  382:                         .'<br />'
  383:                         .&mt('Removing the [_1].number.[_2] from requested filename.','<tt>','</tt>')
  384: 			.'</span></p>');
  385: 	$dest =~ s/\.(\d+)(\.\w+)$/$2/;
  386:     }
  387:     if ($foundbad) {
  388:         $request->print('<p><span class="LC_warning">'
  389:                        .&mt('Invalid characters in requested name have been removed.')
  390:                         .'</span></p>'
  391:         );
  392:     }
  393:     return ($dest,$error);
  394: }
  395: 
  396: sub relativeDest {
  397:     my ($fn,$newfilename,$uname,$udom)=@_;
  398:     my $error = '';
  399:     if ($newfilename=~/^\//) {
  400: # absolute, simply add path
  401:         my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
  402: 	$newfilename="$londocroot/res/$udom/$uname/";
  403:     } else {
  404: 	my $dir=$fn;
  405: 	$dir=~s{/[^/]+$}{};
  406: 	$newfilename=$dir.'/'.$newfilename;
  407:     }
  408:     $newfilename=~s{//+}{/}g; # remove duplicate /
  409:     while ($newfilename=~m{/\.\./}) {
  410: 	$newfilename=~ s{/[^/]+/\.\./}{/}g; #remove dir/..
  411:     }
  412:     my ($authorname,$authordom)=&Apache::lonnet::constructaccess($newfilename);
  413:     unless (($authorname) && ($authordom)) {
  414:        my $otherdir = &display($newfilename);
  415:        $error = &mt('Access denied to [_1]',$otherdir);
  416:     }
  417:     return ($newfilename,$error);
  418: }
  419: 
  420: =pod
  421: 
  422: =item CloseForm1($request, $user, $file)
  423: 
  424:    Close of a form on the successful completion of phase 1 processing
  425: 
  426: Parameters:
  427: 
  428: =over 4
  429: 
  430: =item  $request - Apache Request Object [in] - Apache server request object.
  431: 
  432: =item  $cancelurl - the url to go to on cancel.
  433: 
  434: =back
  435: 
  436: =cut
  437: 
  438: sub CloseForm1 {
  439:     my ($request,  $fn) = @_;
  440:     $request->print('<input type="submit" value="'.&mt('Continue').'" /></form>');
  441:     $request->print(' <form action="'.&url($fn).'" method="post">'.
  442:                     '<input type="submit" value="'.&mt('Cancel').'" /></form>');
  443: }
  444: 
  445: 
  446: =pod
  447: 
  448: =item CloseForm2($request, $user, $directory)
  449: 
  450:    Successfully close off the phase 2 form.
  451: 
  452: Parameters:
  453: 
  454: =over 4
  455: 
  456: =item   $request    - Apache Request object [in] - The request that is being
  457:                  executed.
  458: 
  459: =item   $user       - string [in] - Name of the user that is initiating the
  460:                  request.
  461: 
  462: =item   $directory  - string [in] - Directory in which the operation is 
  463:                  being done relative to the top level construction space
  464:                  directory.
  465: 
  466: =back
  467: 
  468: =cut
  469: 
  470: sub CloseForm2 {
  471:     my ($request, $user, $fn) = @_;
  472:     $request->print(&done(&url($fn)));
  473: }
  474: 
  475: =pod
  476: 
  477: =item Rename1($request, $filename, $user, $domain, $dir)
  478:  
  479:    Perform phase 1 processing of the file rename operation.
  480: 
  481: Parameters:
  482: 
  483: =over 4
  484: 
  485: =item  $request   - Apache Request Object [in] The request object for the 
  486: current request.
  487: 
  488: =item  $filename  - The filename relative to construction space.
  489: 
  490: =item  $user      - Name of the user making the request.
  491: 
  492: =item  $domain    - User login domain.
  493: 
  494: =item  $dir       - Directory specification of the path to the file.
  495: 
  496: =back
  497: 
  498: Side effects:
  499: 
  500: =over 4
  501: 
  502: =item A new form is displayed prompting for confirmation.  The newfilename
  503: hidden field of this form is loaded with
  504: new filename relative to the current directory ($dir).
  505: 
  506: =back
  507: 
  508: =cut  
  509: 
  510: sub Rename1 {
  511:     my ($request, $user, $domain, $fn, $newfilename, $style) = @_;
  512: 
  513:     if(-e $fn) {
  514: 	if($newfilename) {
  515: 	    # is dest a dir
  516: 	    if ($style eq 'move') {
  517: 		if (-d $newfilename) {
  518: 		    if ($fn =~ m|/([^/]*)$|) { $newfilename .= '/'.$1; }
  519: 		}
  520: 	    }
  521: 	    if ($newfilename =~ m|/[^\.]+$|) {
  522: 		#no extension add on original extension
  523: 		if ($fn =~ m|/[^\.]*\.([^\.]+)$|) {
  524: 		    $newfilename.='.'.$1;
  525: 		}
  526: 	    }
  527: 	    $request->print(&checksuffix($fn, $newfilename));
  528: 	    #renaming a dir, delete the trailing /
  529:             #remove second to last element for current dir
  530: 	    if (-d $fn) {
  531: 		$newfilename=~/\.(\w+)$/;
  532: 		if (&Apache::loncommon::fileembstyle($1) eq 'ssi') {
  533: 		    $request->print('<p><span class="LC_error">'.
  534: 				    &mt('Cannot change MIME type of a directory.').
  535: 				    '</span>'.
  536: 				    '<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a></p>');
  537: 		    return;
  538: 		}
  539: 		$newfilename=~s/\/[^\/]+\/([^\/]+)$/\/$1/;
  540: 	    }
  541: 	    $newfilename=~s://+:/:g; # remove duplicate /
  542: 	    while ($newfilename=~m:/\.\./:) {
  543: 		$newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
  544: 	    }
  545: 	    my ($type, $return)=&exists($user, $domain, $newfilename);
  546: 	    $request->print($return);
  547: 	    if ($type eq 'error') {
  548: 		$request->print('<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
  549: 		return;
  550: 	    }
  551: 	    unless (&obsolete_unpub($user,$domain,$fn)) {
  552:                 $request->print('<p><span class="LC_error">'
  553:                                .&mt('Cannot rename or move non-obsolete published file.')
  554:                                .'</span><br />'
  555:                                .'<a href="'.&url($fn).'">'.&mt('Cancel').'</a></p>'
  556:                 );
  557: 		return;
  558: 	    }
  559: 	    my $action;
  560: 	    if ($style eq 'rename') {
  561: 		$action='Rename';
  562: 	    } else {
  563: 		$action='Move';
  564: 	    }
  565:             $request->print('<input type="hidden" name="newfilename" value="'
  566:                            .$newfilename.'" />'
  567:                            .'<p>'
  568:                            .&mt($action.' [_1] to [_2]?',
  569:                                 &display($fn),
  570:                                 &display($newfilename))
  571:                            .'</p>'
  572:         );
  573: 	    &CloseForm1($request, $fn);
  574: 	} else {
  575: 	    $request->print('<p class="LC_error">'.&mt('No new filename specified.').'</p></form>');
  576: 	    return;
  577: 	}
  578:     } else {
  579:         $request->print('<p class="LC_error">'
  580:                        .&mt('No such file: [_1]',
  581:                             &display($fn))
  582:                        .'</p></form>'
  583:         );
  584: 	return;
  585:     }
  586:     
  587: }
  588: 
  589: =pod
  590: 
  591: =item Delete1
  592: 
  593:    Performs phase 1 processing of the delete operation.  In phase one
  594:   we just check to be sure the file exists.
  595: 
  596: Parameters:
  597: 
  598: =over 4
  599: 
  600: =item   $request   - Apache Request Object [in] request object for the current 
  601:                 request.
  602: 
  603: =item   $user      - string [in]  Name of the user initiating the request.
  604: 
  605: =item   $domain    - string [in]  Domain the initiating user is logged in as
  606: 
  607: =item   $filename  - string [in]  Source filename.
  608: 
  609: =back
  610: 
  611: =cut
  612: 
  613: sub Delete1 {
  614:     my ($request, $user, $domain, $fn) = @_;
  615: 
  616:     if( -e $fn) {
  617: 	$request->print('<input type="hidden" name="newfilename" value="'.
  618: 			$fn.'" />');
  619:         if (-d $fn) {
  620:             unless (&empty_directory($fn,'Delete1')) {
  621:                 $request->print('<p>'
  622:                                .'<span class="LC_error">'
  623:                                .&mt('Only empty directories may be deleted.')
  624:                                .'</span><br />'
  625:                                .&mt('You must delete the contents of the directory first.')
  626:                                .'</p>'
  627:                                .'<p><a href="'.&url($fn).'">'.&mt('Cancel').'</a></p>'
  628:                 );
  629:                 return;
  630:             }
  631:         } else { 
  632: 	    unless (&obsolete_unpub($user,$domain,$fn)) {
  633:                 $request->print('<p><span class="LC_error">'
  634:                                .&mt('Cannot delete non-obsolete published file.')
  635:                                .'</span><br />'
  636:                                .'<a href="'.&url($fn).'">'.&mt('Cancel').'</a></p>'
  637:                 );
  638: 	        return;
  639: 	    }
  640:         }
  641:         $request->print('<p>'
  642:                        .&mt('Delete [_1]?',
  643:                             &display($fn))
  644:                        .'</p>'
  645:         );
  646: 	&CloseForm1($request, $fn);
  647:     } else {
  648:         $request->print('<p class="LC_error">'
  649:                        .&mt('No such file: [_1]',
  650:                             &display($fn))
  651:                        .'</p></form>'
  652:         );
  653:     }
  654: }
  655: 
  656: =pod
  657: 
  658: =item Copy1($request, $user, $domain, $filename, $newfilename)
  659: 
  660:    Performs phase 1 processing of the construction space copy command.
  661:    Ensure that the source file exists.  Ensure that a destination exists,
  662:    also warn if the destination already exists.
  663: 
  664: Parameters:
  665: 
  666: =over 4
  667: 
  668: =item   $request   - Apache Request Object [in] request object for the current 
  669:                 request.
  670: 
  671: =item   $user      - string [in]  Name of the user initiating the request.
  672: 
  673: =item   $domain    - string [in]  Domain the initiating user is logged in as
  674: 
  675: =item   $fn  - string [in]  Source filename.
  676: 
  677: =item   $newfilename-string [in]  Destination filename.
  678: 
  679: =back
  680: 
  681: =cut
  682: 
  683: sub Copy1 {
  684:     my ($request, $user, $domain, $fn, $newfilename) = @_;
  685: 
  686:     if(-e $fn) {
  687: 	# is dest a dir
  688: 	if (-d $newfilename) {
  689: 	    if ($fn =~ m|/([^/]*)$|) { $newfilename .= '/'.$1; }
  690: 	}
  691: 	if ($newfilename =~ m|/[^\.]+$|) {
  692: 	    #no extension add on original extension
  693: 	    if ($fn =~ m|/[^\.]*\.([^\.]+)$|) {	$newfilename.='.'.$1; }
  694: 	} 
  695: 	$newfilename=~s://+:/:g; # remove duplicate /
  696: 	while ($newfilename=~m:/\.\./:) {
  697: 	    $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
  698: 	}
  699: 	$request->print(&checksuffix($fn,$newfilename));
  700: 	my ($type,$return)=&exists($user, $domain, $newfilename);
  701: 	$request->print($return);
  702: 	if ($type eq 'error') {
  703: 	    $request->print('<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a></form>');
  704: 	    return;
  705: 	}
  706: # Check if there is enough space.
  707:         my @fileinfo = stat($fn);
  708:         my ($dir,$fname) = ($fn =~ m{^(.+/)([^/]+)$});
  709:         my $filesize = $fileinfo[7];
  710:         $filesize = int($filesize/1000); #expressed in kb
  711:         my $authorspace = $Apache::lonnet::perlvar{'lonDocRoot'}."/priv/$domain/$user";
  712:         my $output = &Apache::loncommon::excess_filesize_warning($user,$domain,$authorspace,
  713:                                                                  $fname,$filesize,'copy');
  714:         if ($output) {
  715:             $request->print($output.'<br /><a href="'.&url($dir).'">'.&mt('Cancel').'</a></form>');
  716:             return;
  717:         }
  718:     $request->print(
  719:         '<input type="hidden" name="newfilename"'
  720:        .' value="'.$newfilename.'" />'
  721:        .'<p>'
  722:        .&mt('Copy [_1] to [_2]?',
  723:             &display($fn),
  724:             &display($newfilename))
  725:        .'</p>'
  726:         );
  727: 	&CloseForm1($request, $fn);
  728:     } else {
  729:         $request->print('<p class="LC_error">'
  730:                        .&mt('No such file: [_1]',
  731:                             &display($fn))
  732:                        .'</p></form>'
  733:         );
  734:     }
  735: }
  736: 
  737: =pod
  738: 
  739: =item NewDir1
  740:  
  741:   Does all phase 1 processing of directory creation:
  742:   Ensures that the user provides a new directory name,
  743:   and that the directory does not already exist.
  744: 
  745: Parameters:
  746: 
  747: =over 4
  748: 
  749: =item   $request  - Apache Request Object [in] - Server request object for the
  750:                current url.
  751: 
  752: =item   $username - Name of the user that is requesting the directory creation.
  753: 
  754: =item $domain - Domain user is in
  755: 
  756: =item   $fn     - source file.
  757: 
  758: =item   $newdir   - Name of the directory to be created; path relative to the 
  759:                top level of construction space.
  760: =back
  761: 
  762: Side Effects:
  763: 
  764: =over 4
  765: 
  766: =item A new form is displayed.  Clicking on the confirmation button
  767: causes the newdir operation to transition into phase 2.  The hidden field
  768: "newfilename" is set with the construction space path to the new directory.
  769: 
  770: 
  771: =back
  772: 
  773: =cut
  774: 
  775: 
  776: sub NewDir1 {
  777:     my ($request, $username, $domain, $fn, $newfilename, $mode) = @_;
  778: 
  779:     my ($type, $result)=&exists($username,$domain,$newfilename,'directory');
  780:     $request->print($result);
  781:     if ($type eq 'error') {
  782: 	$request->print('</form>');
  783:     } else {
  784: 	if (($mode eq 'testbank') || ($mode eq 'imsimport')) {
  785: 	    $request->print('<input type="hidden" name="callingmode" value="'.$mode.'" />'."\n".
  786:                             '<input type="hidden" name="inhibitmenu" value="yes" />');
  787: 	}
  788:         $request->print('<input type="hidden" name="newfilename" value="'
  789:                        .$newfilename.'" />'
  790:                        .'<p>'
  791:                        .&mt('Make new directory [_1]?',
  792:                             &display($newfilename))
  793:                        .'</p>'
  794:         );
  795: 	&CloseForm1($request, $fn);
  796:     }
  797: }
  798: 
  799: 
  800: sub Decompress1 {
  801:     my ($request, $user, $domain, $fn) = @_;
  802:     if( -e $fn) {
  803:    	$request->print('<input type="hidden" name="newfilename" value="'.$fn.'" />');
  804:    	$request->print('<p>'
  805:                    .&mt('Decompress [_1]?',
  806:                         &display($fn))
  807:                    .'</p>'
  808:     );
  809:    	&CloseForm1($request, $fn);
  810:     } else {
  811:         $request->print('<p class="LC_error">'
  812:                        .&mt('No such file: [_1]',
  813:                             &display($fn))
  814:                        .'</p></form>'
  815:         );
  816:     }
  817: }
  818: 
  819: =pod
  820: 
  821: =item NewFile1
  822:  
  823:   Does all phase 1 processing of file creation:
  824:   Ensures that the user provides a new filename, adds proper extension
  825:   if needed and that the file does not already exist, if it is a html,
  826:   problem, page, or sequence, it then creates a form link to hand the
  827:   actual creation off to the proper handler.
  828: 
  829: Parameters:
  830: 
  831: =over 4
  832: 
  833: =item   $request  - Apache Request Object [in] - Server request object for the
  834:                current url.
  835: 
  836: =item   $username - Name of the user that is requesting the directory creation.
  837: 
  838: =item   $domain   - Name of the domain of the user
  839: 
  840: =item   $fn      - Source filename
  841: 
  842: =item   $newfilename
  843:                   - Name of the file to be created; no path information
  844: =back
  845: 
  846: Side Effects:
  847: 
  848: =over 4
  849: 
  850: =item 2 new forms are displayed.  Clicking on the confirmation button
  851: causes the browser to attempt to load the specfied URL, allowing the
  852: proper handler to take care of file creation. There is also a Cancel
  853: button which returns you to the directory listing you came from
  854: 
  855: =back
  856: 
  857: =cut
  858: 
  859: sub NewFile1 {
  860:     my ($request, $user, $domain, $fn, $newfilename) = @_;
  861:     return if (&filename_check($newfilename) ne 'ok');
  862: 
  863:     if ($env{'form.action'} =~ /new(.+)file/) {
  864: 	my $extension=$1;
  865: 	if ($newfilename !~ /\Q.$extension\E$/) {
  866: 	    if ($newfilename =~ m|/[^/.]*\.(?:[^/.]+)$|) {
  867: 		#already has an extension strip it and add in expected one
  868: 		$newfilename =~ s|(/[^./])\.(?:[^.]+)$|$1|;
  869: 	    }
  870: 	    $newfilename.=".$extension";
  871: 	}
  872:     }
  873:     my ($type, $result)=&exists($user,$domain,$newfilename);
  874:     $request->print($result);
  875:     if ($type eq 'error') {
  876: 	$request->print('</form>');
  877:     } else {
  878:         my $extension;
  879: 
  880:         if ($newfilename =~ m{[^/.]+\.([^/.]+)$}) {
  881:             $extension = $1;
  882:         }
  883: 
  884:         my @okexts = qw(xml html xhtml htm xhtm problem page sequence rights sty task library js css txt);
  885:         if (($extension eq '') || (!grep(/^\Q$extension\E/,@okexts))) {
  886:             my $validexts = '.'.join(', .',@okexts);
  887:             $request->print('<p class="LC_warning">'.
  888:                 &mt('Invalid filename: ').&display($newfilename).'</p><p>'.
  889:                 &mt('The name of the new file needs to end with an appropriate file extension to indicate the type of file to create.').'<br />'.
  890:                 &mt('The following are valid extensions: [_1].',$validexts).
  891:                 '</p></form><p>'.
  892: 		'<form name="fileaction" action="/adm/cfile" method="post">'.
  893:                 '<input type="hidden" name="qualifiedfilename" value="'.$fn.'" />'.
  894: 		'<input type="hidden" name="action" value="newfile" />'.
  895: 	        '<span class ="LC_nobreak">'.&mt('Enter a filename: ').'<input type="text" name="newfilename" value="Type Name Here" onfocus="if (this.value == '."'Type Name Here') this.value=''".'" />&nbsp;<input type="submit" value="Go" />'.
  896:                 '</span></form></p>'.
  897:                 '<p><form action="'.&url($fn).
  898:                 '" method="post"><p><input type="submit" value="'.&mt('Cancel').'" /></form></p>');
  899:             return;
  900:         }
  901: 
  902: 	$request->print('<p>'.&mt('Make new file').' '.&display($newfilename).'?</p>');
  903: 	$request->print('</form>');
  904: 
  905: 	$request->print('<form action="'.&url($newfilename).
  906: 			'" method="post"><p><input type="submit" value="'.&mt('Continue').'" /></p></form>');
  907: 	$request->print('<form action="'.&url($fn).
  908: 			'" method="post"><p><input type="submit" value="'.&mt('Cancel').'" /></p></form>');
  909:     }
  910:     return;
  911: }
  912: 
  913: sub filename_check {
  914:     my ($newfilename) = @_;
  915:     ##Informs User (name).(number).(extension) not allowed
  916:     if($newfilename =~ /\.(\d+)\.(\w+)$/){
  917:         $r->print('<span class="LC_error">'.$newfilename.
  918:                   ' - '.&mt('Bad Filename').'<br />('.&mt('name').').('.&mt('number').').('.&mt('extension').') '.
  919:                   ' '.&mt('Not Allowed').'</span>');
  920:         return;
  921:     }
  922:     if($newfilename =~ /(\:\:\:|\&\&\&|\_\_\_)/){
  923:         $r->print('<span class="LC_error">'.$newfilename.
  924:                   ' - '.&mt('Bad Filename').'<br />('.&mt('Must not include').' '.$1.') '.
  925:                   ' '.&mt('Not Allowed').'</span>');
  926:         return;
  927:     }
  928:     return 'ok'; 
  929: }
  930: 
  931: =pod
  932: 
  933: =item phaseone($r, $fn, $uname, $udom)
  934: 
  935:   Peforms phase one processing of the request.  In phase one, error messages
  936: are returned if the request cannot be performed (e.g. attempts to manipulate
  937: files that are nonexistent).  If the operation can be performed, what is
  938: about to be done will be presented to the user for confirmation.  If the
  939: user confirms the request, then phase two is executed, the action 
  940: performed and reported to the user.
  941: 
  942:  Parameters:
  943: 
  944: =over 4
  945: 
  946: =item $r  - request object [in] - The Apache request being executed.
  947: 
  948: =item $fn = string [in] - The filename being manipulated by the 
  949:                              request.
  950: 
  951: =item $uname - string [in] Name of user logged in and doing this action.
  952: 
  953: =item $udom  - string [in] Domain name under which the user logged in. 
  954: 
  955: =back
  956: 
  957: =cut
  958: 
  959: sub phaseone {
  960:     my ($r,$fn,$uname,$udom)=@_;
  961:   
  962:     my $doingdir=0;
  963:     if ($env{'form.action'} eq 'newdir') { $doingdir=1; }
  964:     my ($newfilename,$error) = 
  965:         &cleanDest($r,$env{'form.newfilename'},$doingdir,$fn,$uname,$udom);
  966:     unless ($error) {
  967:         ($newfilename,$error)=&relativeDest($fn,$newfilename,$uname,$udom);
  968:     }
  969:     if ($error) {
  970:         my $dirlist;
  971:         if ($fn=~m{^(.*/)[^/]+$}) {
  972:             $dirlist=$1;
  973:         } else {
  974:             $dirlist=$fn; 
  975:         }
  976:         $r->print('<div class="LC_error">'.$error.'</div>'.
  977:                   '<p><a href="'.&url($dirlist).'">'.&mt('Return to Directory').
  978:                   '</a></p>');
  979:         return;
  980:     }
  981:     $r->print('<form action="/adm/cfile" method="post">'.
  982: 	      '<input type="hidden" name="qualifiedfilename" value="'.$fn.'" />'.
  983: 	      '<input type="hidden" name="phase" value="two" />'.
  984: 	      '<input type="hidden" name="action" value="'.$env{'form.action'}.'" />');
  985:   
  986:     if ($env{'form.action'} eq 'rename') {
  987: 	&Rename1($r, $uname, $udom, $fn, $newfilename, 'rename');
  988:     } elsif ($env{'form.action'} eq 'move') {
  989: 	&Rename1($r, $uname, $udom, $fn, $newfilename, 'move');
  990:     } elsif ($env{'form.action'} eq 'delete') { 
  991: 	&Delete1($r, $uname, $udom, $fn);
  992:     } elsif ($env{'form.action'} eq 'decompress') {
  993: 	&Decompress1($r, $uname, $udom, $fn);
  994:     } elsif ($env{'form.action'} eq 'copy') { 
  995: 	if($newfilename) {
  996: 	    &Copy1($r, $uname, $udom, $fn, $newfilename);
  997: 	} else {
  998:             $r->print('<p class="LC_error">'
  999:                      .&mt('No new filename specified.')
 1000:                      .'</p></form>'
 1001:             );
 1002: 	}
 1003:     } elsif ($env{'form.action'} eq 'newdir') {
 1004: 	my $mode = '';
 1005: 	if (exists($env{'form.callingmode'}) ) {
 1006: 	    $mode = $env{'form.callingmode'};
 1007: 	}   
 1008: 	&NewDir1($r, $uname, $udom, $fn, $newfilename, $mode);
 1009:     }  elsif ($env{'form.action'} eq 'newfile' ||
 1010: 	      $env{'form.action'} eq 'newhtmlfile' ||
 1011: 	      $env{'form.action'} eq 'newproblemfile' ||
 1012: 	      $env{'form.action'} eq 'newpagefile' ||
 1013: 	      $env{'form.action'} eq 'newsequencefile' ||
 1014: 	      $env{'form.action'} eq 'newrightsfile' ||
 1015: 	      $env{'form.action'} eq 'newstyfile' ||
 1016: 	      $env{'form.action'} eq 'newtaskfile' ||
 1017:               $env{'form.action'} eq 'newlibraryfile' ||
 1018: 	      $env{'form.action'} eq 'Select Action') {
 1019:         my $empty=&mt('Type Name Here');
 1020: 	if (($newfilename!~/\/$/) && ($newfilename!~/$empty$/)) {
 1021: 	    &NewFile1($r, $uname, $udom, $fn, $newfilename);
 1022: 	} else {
 1023:             $r->print('<p class="LC_error">'
 1024:                      .&mt('No new filename specified.')
 1025:                      .'</p></form>'
 1026:             );
 1027: 	}
 1028:     }
 1029: }
 1030: 
 1031: =pod
 1032: 
 1033: =item Rename2($request, $user, $directory, $oldfile, $newfile)
 1034: 
 1035: Performs phase 2 processing of a rename reequest.   This is where the
 1036: actual rename is performed.
 1037: 
 1038: Parameters
 1039: 
 1040: =over 4
 1041: 
 1042: =item $request - Apache request object [in] The request being processed.
 1043: 
 1044: =item $user  - string [in] The name of the user initiating the request.
 1045: 
 1046: =item $directory - string [in] The name of the directory relative to the
 1047:                  construction space top level of the renamed file.
 1048: 
 1049: =item $oldfile - Name of the file.
 1050: 
 1051: =item $newfile - Name of the new file.
 1052: 
 1053: =back
 1054: 
 1055: Returns:
 1056: 
 1057: =over 4
 1058: 
 1059: =item 1 Success.
 1060: 
 1061: =item 0 Failure.
 1062: 
 1063: =cut
 1064: 
 1065: sub Rename2 {
 1066: 
 1067:     my ($request, $user, $directory, $oldfile, $newfile) = @_;
 1068: 
 1069:     &Debug($request, "Rename2 directory: ".$directory." old file: ".$oldfile.
 1070: 	   " new file ".$newfile."\n");
 1071:     &Debug($request, "Target is: ".$directory.'/'.
 1072: 	   $newfile);
 1073:     if (-e $oldfile) {
 1074: 
 1075: 	my $oRN=$oldfile;
 1076: 	my $nRN=$newfile;
 1077: 	unless (rename($oldfile,$newfile)) {
 1078: 	    $request->print('<span class="LC_error">'.&mt('Error').': '.$!.'</span>');
 1079: 	    return 0;
 1080: 	}
 1081: 	## If old name.(extension) exits, move under new name.
 1082: 	## If it doesn't exist and a new.(extension) exists  
 1083: 	## delete it (only concern when renaming over files)
 1084: 	my $tmp1=$oRN.'.meta';
 1085: 	my $tmp2=$nRN.'.meta';
 1086: 	if(-e $tmp1){
 1087: 	    unless(rename($tmp1,$tmp2)){ }
 1088: 	} elsif(-e $tmp2){
 1089: 	    unlink $tmp2;
 1090: 	}
 1091: 	$tmp1=$oRN.'.save';
 1092: 	$tmp2=$nRN.'.save';
 1093: 	if(-e $tmp1){
 1094: 	    unless(rename($tmp1,$tmp2)){ }
 1095: 	} elsif(-e $tmp2){
 1096: 	    unlink $tmp2;
 1097: 	}
 1098: 	$tmp1=$oRN.'.log';
 1099: 	$tmp2=$nRN.'.log';
 1100: 	if(-e $tmp1){
 1101: 	    unless(rename($tmp1,$tmp2)){ }
 1102: 	} elsif(-e $tmp2){
 1103: 	    unlink $tmp2;
 1104: 	}
 1105: 	$tmp1=$oRN.'.bak';
 1106: 	$tmp2=$nRN.'.bak';
 1107: 	if(-e $tmp1){
 1108: 	    unless(rename($tmp1,$tmp2)){ }
 1109: 	} elsif(-e $tmp2){
 1110: 	    unlink $tmp2;
 1111: 	}
 1112:     } else {
 1113:         $request->print(
 1114:             '<p class="LC_error">'
 1115:            .&mt('No such file: [_1]',
 1116:                 &display($oldfile))
 1117:            .'</p></form>'
 1118:         );
 1119: 	return 0;
 1120:     }
 1121:     return 1;
 1122: }
 1123: 
 1124: =pod
 1125: 
 1126: =item Delete2($request, $user, $filename)
 1127: 
 1128:   Performs phase two of a delete.  The user has confirmed that they want 
 1129: to delete the selected file.   The file is deleted and the results of the
 1130: delete attempt are indicated.
 1131: 
 1132: Parameters:
 1133: 
 1134: =over 4
 1135: 
 1136: =item $request - Apache Request object [in] the request object for the current
 1137:                  delete operation.
 1138: 
 1139: =item $user    - string [in]  The name of the user initiating the delete
 1140:                  request.
 1141: 
 1142: =item $filename - string [in] The name of the file, relative to construction
 1143:                   space, to delete.
 1144: 
 1145: =back
 1146: 
 1147: Returns:
 1148:   1 - success.
 1149:   0 - Failure.
 1150: 
 1151: =cut
 1152: 
 1153: sub Delete2 {
 1154:     my ($request, $user, $filename) = @_;
 1155:     if (-d $filename) { 
 1156: 	unless (&empty_directory($filename,'Delete2')) { 
 1157: 	    $request->print('<span class="LC_error">'.&mt('Error: Directory Non Empty').'</span>'); 
 1158: 	    return 0;
 1159: 	} else {   
 1160: 	    if(-e $filename) {
 1161: 		unless(rmdir($filename)) {
 1162: 		    $request->print('<span class="LC_error">'.&mt('Error').': '.$!.'</span>');
 1163: 		    return 0;
 1164: 		}
 1165: 	    } else {
 1166:         	$request->print('<p class="LC_error">'.&mt('No such file').'</p></form>');
 1167: 		return 0;
 1168: 	    }
 1169: 	}
 1170:     } else {
 1171: 	if(-e $filename) {
 1172: 	    unless(unlink($filename)) {
 1173: 		$request->print('<span class="LC_error">'.&mt('Error').': '.$!.'</span>');
 1174: 		return 0;
 1175: 	    }
 1176: 	} else {
 1177:             $request->print('<p class="LC_error">'.&mt('No such file').'</p></form>');
 1178: 	    return 0;
 1179: 	}
 1180:     }
 1181:     return 1;
 1182: }
 1183: 
 1184: =pod
 1185: 
 1186: =item Copy2($request, $username, $dir, $oldfile, $newfile)
 1187: 
 1188:    Performs phase 2 of a copy.  The file is copied and the status 
 1189:    of that copy is reported back to the user.
 1190: 
 1191: =over 4
 1192: 
 1193: =item $request - Apache request object [in]; the apache request currently
 1194:                  being executed.
 1195: 
 1196: =item $username - string [in] Name of the user who is requesting the copy.
 1197: 
 1198: =item $dir - string [in] Directory path relative to the construction space
 1199:              of the destination file.
 1200: 
 1201: =item $oldfile - string [in] Name of the source file.
 1202: 
 1203: =item $newfile - string [in] Name of the destination file.
 1204: 
 1205: 
 1206: =back
 1207: 
 1208: Returns 0 failure, and 1 successs.
 1209: 
 1210: =cut
 1211: 
 1212: sub Copy2 {
 1213:     my ($request, $username, $dir, $oldfile, $newfile) = @_;
 1214:     &Debug($request ,"Will try to copy $oldfile to $newfile");
 1215:     if(-e $oldfile) {
 1216:         if ($oldfile eq $newfile) {
 1217:             $request->print('<span class="LC_error">'.&mt('Warning').': '.&mt('Name of new file is the same as name of old file').' - '.&mt('no action taken').'.</span>');
 1218:             return 1;
 1219:         }
 1220: 	unless (copy($oldfile, $newfile)) {
 1221: 	    $request->print('<span class="LC_error">'.&mt('copy Error').': '.$!.'</span>');
 1222: 	    return 0;
 1223: 	} elsif (!chmod(0660, $newfile)) {
 1224: 	    $request->print('<span class="LC_error">'.&mt('chmod error').': '.$!.'</span>');
 1225: 	    return 0;
 1226: 	} elsif (-e $oldfile.'.meta' && 
 1227: 		 !copy($oldfile.'.meta', $newfile.'.meta') &&
 1228: 		 !chmod(0660, $newfile.'.meta')) {
 1229: 	    $request->print('<span class="LC_error">'.&mt('copy metadata error').
 1230: 			    ': '.$!.'</span>');
 1231: 	    return 0;
 1232: 	} else {
 1233: 	    return 1;
 1234: 	}
 1235:     } else {
 1236:         $request->print('<p class="LC_error">'.&mt('No such file').'</p>');
 1237: 	return 0;
 1238:     }
 1239:     return 1;
 1240: }
 1241: 
 1242: =pod
 1243: 
 1244: =item NewDir2($request, $user, $newdirectory)
 1245: 
 1246: 	Performs phase 2 processing of directory creation.  This involves creating the directory and
 1247: 	reporting the results of that creation to the user.
 1248: 	
 1249: Parameters:
 1250: =over 4
 1251: 
 1252: =item $request  - Apache request object [in].  Object representing the current HTTP request.
 1253: 
 1254: =item $user - string [in] The name of the user that is initiating the request.
 1255: 
 1256: =item $newdirectory - string [in] The full path of the directory being created.
 1257: 
 1258: =back
 1259: 
 1260: Returns 0 - failure 1 - success.
 1261: 
 1262: =cut
 1263: 
 1264: sub NewDir2 {
 1265:     my ($request, $user, $newdirectory) = @_;
 1266:   
 1267:     unless(mkdir($newdirectory, 02770)) {
 1268: 	$request->print('<span class="LC_error">'.&mt('Error').': '.$!.'</span>');
 1269: 	return 0;
 1270:     }
 1271:     unless(chmod(02770, ($newdirectory))) {
 1272: 	$request->print('<span class="LC_error">'.&mt('Error').': '.$!.'</span>');
 1273: 	return 0;
 1274:     }
 1275:     return 1;
 1276: }
 1277: 
 1278: sub decompress2 {
 1279:     my ($r, $user, $dir, $file) = @_;
 1280:     &Apache::lonnet::appenv({'cgi.file' => $file});
 1281:     &Apache::lonnet::appenv({'cgi.dir' => $dir});
 1282:     my $result=&Apache::lonnet::ssi_body('/cgi-bin/decompress.pl');
 1283:     $r->print($result);
 1284:     &Apache::lonnet::delenv('cgi.file');
 1285:     &Apache::lonnet::delenv('cgi.dir');
 1286:     return 1;
 1287: }
 1288: 
 1289: =pod
 1290: 
 1291: =item phasetwo($r, $fn, $uname, $udom)
 1292: 
 1293:    Controls the phase 2 processing of file management
 1294:    requests for construction space.  In phase one, the user
 1295:    was asked to confirm the operation.  In phase 2, the operation
 1296:    is performed and the result is shown.
 1297: 
 1298:   The strategy is to break out the processing into specific action processors
 1299:   named action2 where action is the requested action and the 2 denotes 
 1300:   phase 2 processing.
 1301: 
 1302: Parameters:
 1303: 
 1304: =over 4
 1305: 
 1306: =item  $r     - Apache Request object [in] The request object for this httpd
 1307:            transaction.
 1308: 
 1309: =item  $fn    - string [in]  A filename indicating the object that is being
 1310:            manipulated.
 1311: 
 1312: =item  $uname - string [in] The name of the user initiating the file management
 1313:            request.
 1314: 
 1315: =item  $udom  - string  [in] The login domain of the user initiating the
 1316:            file management request.
 1317: =back
 1318: 
 1319: =cut
 1320: 
 1321: sub phasetwo {
 1322:     my ($r,$fn,$uname,$udom)=@_;
 1323:     
 1324:     &Debug($r, "loncfile - Entering phase 2 for $fn");
 1325:     
 1326:     # Break down the file into its component pieces.
 1327:     
 1328:     my $dir;		# Directory path
 1329:     my $main;		# Filename.
 1330:     my $suffix;		# Extension.
 1331:     if ($fn=~m:(.*)/([^/]+):) {
 1332: 	$dir=$1;		# Directory path
 1333: 	$main=$2;		# Filename.
 1334:     }
 1335:     if($main=~m:\.(\w+)$:){ # Fixes problems with filenames with no extensions
 1336: 	$suffix=$1; #This is the actually filename extension if it exists
 1337: 	$main=~s/\.\w+$//; #strip the extension
 1338:     }
 1339:     my $dest;                       #
 1340:     my $dest_dir;                   # On success this is where we'll go.
 1341:     my $disp_newname;               #
 1342:     my $dest_newname;               #
 1343:     &Debug($r,"loncfile::phase2 dir = $dir main = $main suffix = $suffix");
 1344:     &Debug($r,"    newfilename = ".$env{'form.newfilename'});
 1345: 
 1346:     my $conspace=$fn;
 1347:     
 1348:     &Debug($r,"loncfile::phase2 Full construction space name: $conspace");
 1349:     
 1350:     &Debug($r,"loncfie::phase2 action is $env{'form.action'}");
 1351:     
 1352:     # Select the appropriate processing sub.
 1353:     if ($env{'form.action'} eq 'decompress') { 
 1354: 	$main .= '.'.$suffix;
 1355: 	if(!&decompress2($r, $uname, $dir, $main)) {
 1356: 	    return ;
 1357: 	}
 1358: 	$dest = $dir."/.";
 1359:     } elsif ($env{'form.action'} eq 'rename' ||
 1360: 	     $env{'form.action'} eq 'move') {
 1361: 	if($env{'form.newfilename'}) {
 1362: 	    if (!defined($dir)) {
 1363: 		$fn=~m:^(.*)/:;
 1364: 		$dir=$1; 
 1365: 	    }
 1366: 	    if(!&Rename2($r, $uname, $dir, $fn, $env{'form.newfilename'})) {
 1367: 		return;
 1368: 	    }
 1369: 	    $dest = $dir."/";
 1370: 	    $dest_newname = $env{'form.newfilename'};
 1371: 	    $env{'form.newfilename'} =~ /.+(\/.+$)/;
 1372: 	    $disp_newname = $1;
 1373: 	    $disp_newname =~ s/\///;
 1374: 	}
 1375:     } elsif ($env{'form.action'} eq 'delete') { 
 1376: 	if(!&Delete2($r, $uname, $env{'form.newfilename'})) {
 1377: 	    return ;
 1378: 	}
 1379: 	# Once a resource is deleted, we just list the directory that
 1380: 	# previously held it.
 1381: 	#
 1382: 	$dest = $dir."/.";		# Parent dir.
 1383:     } elsif ($env{'form.action'} eq 'copy') { 
 1384: 	if($env{'form.newfilename'}) {
 1385: 	    if(!&Copy2($r, $uname, $dir, $fn, $env{'form.newfilename'})) {
 1386: 		return ;
 1387: 	    }
 1388: 	    $dest = $env{'form.newfilename'};
 1389:      	} else {
 1390:             $r->print('<p class="LC_error">'.&mt('No New filename specified').'</p></form>');
 1391: 	    return;
 1392: 	}
 1393: 	
 1394:     } elsif ($env{'form.action'} eq 'newdir') {
 1395:         my $newdir= $env{'form.newfilename'};
 1396: 	if(!&NewDir2($r, $uname, $newdir)) {
 1397: 	    return;
 1398: 	}
 1399: 	$dest = $newdir."/";
 1400:     }
 1401:     if ( ($env{'form.action'} eq 'newdir') && ($env{'form.phase'} eq 'two') && ( ($env{'form.callingmode'} eq 'testbank') || ($env{'form.callingmode'} eq 'imsimport') ) ) {
 1402:         $r->print(
 1403:             '<p>'
 1404:            .&Apache::lonhtmlcommon::confirm_success(&mt('Done'))
 1405:            .'<br /><a href="javascript:self.close()">'.&mt('Continue').'</a>'
 1406:            .'</p>'
 1407:         );
 1408:     } else {
 1409:         if ($env{'form.action'} eq 'rename') {
 1410:             $r->print(
 1411:                  '<p>'.&Apache::lonhtmlcommon::confirm_success(&mt('Done')).'</p>'
 1412:                 .&Apache::lonhtmlcommon::actionbox(
 1413:                      ['<a href="'.&url($dest).'">'.&mt('Return to Directory').'</a>',
 1414:                       '<a href="'.&url($dest_newname).'">'.$disp_newname.'</a>']));
 1415:         } else {
 1416: 	    $r->print(&done(&url($dest)));
 1417: 	}
 1418:     }
 1419: }
 1420: 
 1421: sub handler {
 1422: 
 1423:     $r=shift;
 1424: 
 1425:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['decompress','action','filename','newfilename']);
 1426: 
 1427:     &Debug($r, "loncfile.pm - handler entered");
 1428:     &Debug($r, " filename: ".$env{'form.filename'});
 1429:     &Debug($r, " newfilename: ".$env{'form.newfilename'});
 1430: #
 1431: # Determine the root filename
 1432: # This could come in as "filename", which actually is a URL, or
 1433: # as "qualifiedfilename", which is indeed a real filename in filesystem
 1434: #
 1435:     my $fn;
 1436: 
 1437:     if ($env{'form.filename'}) {
 1438: 	&Debug($r, "test: $env{'form.filename'}");
 1439: 	$fn=&unescape($env{'form.filename'});
 1440: 	$fn=&URLToPath($fn);
 1441:     }  elsif($ENV{'QUERY_STRING'} && $env{'form.phase'} ne 'two') {  
 1442: 	#Just hijack the script only the first time around to inject the
 1443: 	#correct information for further processing
 1444: 	$fn=&unescape($env{'form.decompress'});
 1445: 	$fn=&URLToPath($fn);
 1446: 	$env{'form.action'}="decompress";
 1447:     } elsif ($env{'form.qualifiedfilename'}) {
 1448: 	$fn=$env{'form.qualifiedfilename'};
 1449:     } else {
 1450: 	&Debug($r, "loncfile::handler - no form.filename");
 1451: 	$r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
 1452: 		       ' unspecified filename for cfile', $r->filename); 
 1453: 	return HTTP_NOT_FOUND;
 1454:     }
 1455: 
 1456:     unless ($fn) { 
 1457: 	&Debug($r, "loncfile::handler - doctored url is empty");
 1458: 	$r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
 1459: 		       ' trying to cfile non-existing file', $r->filename); 
 1460: 	return HTTP_NOT_FOUND;
 1461:     } 
 1462: 
 1463: # ----------------------------------------------------------- Start page output
 1464: 
 1465:     my ($uname,$udom) = &Apache::lonnet::constructaccess($fn);
 1466:     &Debug($r, 
 1467: 	   "loncfile::handler constructaccess uname = $uname domain = $udom");
 1468:     if (($uname eq '') || ($udom eq '')) {
 1469: 	$r->log_reason($uname.' at '.$udom.
 1470: 		       ' trying to manipulate file '.$env{'form.filename'}.
 1471: 		       ' ('.$fn.') - not authorized', 
 1472: 		       $r->filename); 
 1473: 	return HTTP_NOT_ACCEPTABLE;
 1474:     }
 1475: 
 1476: 
 1477:     &Apache::loncommon::content_type($r,'text/html');
 1478:     $r->send_http_header;
 1479: 
 1480:     my (%loaditem,$js);
 1481: 
 1482:     if ( ($env{'form.action'} eq 'newdir') && ($env{'form.phase'} eq 'two') && ( ($env{'form.callingmode'} eq 'testbank') || ($env{'form.callingmode'} eq 'imsimport') ) ) {
 1483: 	my $newdirname = $env{'form.newfilename'};
 1484: 	$js = qq|
 1485: <script type="text/javascript">
 1486: function writeDone() {
 1487:     window.focus();
 1488:     opener.document.info.newdir.value = "$newdirname";
 1489:     setTimeout("self.close()",10000);
 1490: }
 1491:   </script>
 1492: |;
 1493: 	$loaditem{'onload'} = "writeDone()";
 1494:     }
 1495: 
 1496:     my $londocroot = $r->dir_config('lonDocRoot');
 1497:     my $trailfile = $fn;
 1498:     $trailfile =~ s{^/(priv/)}{$londocroot/$1};
 1499:     
 1500:     # Breadcrumbs
 1501:     &Apache::lonhtmlcommon::clear_breadcrumbs();
 1502:     &Apache::lonhtmlcommon::add_breadcrumb({
 1503:         'text'  => 'Authoring Space',
 1504:         'href'  => &Apache::loncommon::authorspace($fn),
 1505:     });
 1506:     &Apache::lonhtmlcommon::add_breadcrumb({
 1507:         'text'  => 'File Operation',
 1508:         'title' => 'Authoring Space File Operation',
 1509:         'href'  => '',
 1510:     });
 1511: 
 1512:     $r->print(&Apache::loncommon::start_page('Authoring Space File Operation',
 1513: 					     $js,
 1514: 					     {'add_entries' => \%loaditem,})
 1515:              .&Apache::lonhtmlcommon::breadcrumbs()
 1516:              .&Apache::loncommon::head_subbox(
 1517:                   &Apache::loncommon::CSTR_pageheader($trailfile))
 1518:     );
 1519:   
 1520:     $r->print('<p>'.&mt('Location').': '.&display($fn).'</p>');
 1521:   
 1522:     if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
 1523:         $r->print('<p class="LC_info">'
 1524:                  .&mt('Co-Author [_1]',$uname.':'.$udom)
 1525:                  .'</p>'
 1526:         );
 1527:     }
 1528: 
 1529: 
 1530:     &Debug($r, "loncfile::handler Form action is $env{'form.action'} ");
 1531:     my %action = &Apache::lonlocal::texthash(
 1532:         'delete'          => 'Delete',
 1533:         'rename'          => 'Rename',
 1534:         'move'            => 'Move',
 1535:         'newdir'          => 'New Directory',
 1536:         'decompress'      => 'Decompress',
 1537:         'copy'            => 'Copy',
 1538:         'newfile'         => 'New Resource',
 1539: 	'newhtmlfile'     => 'New Resource',
 1540: 	'newproblemfile'  => 'New Resource',
 1541: 	'newpagefile'     => 'New Resource',
 1542: 	'newsequencefile' => 'New Resource',
 1543: 	'newrightsfile'   => 'New Resource',
 1544: 	'newstyfile'      => 'New Resource',
 1545: 	'newtaskfile'     => 'New Resource',
 1546:         'newlibraryfile'  => 'New Resource',
 1547: 	'Select Action'   => 'New Resource',
 1548:     );
 1549:     if ($action{$env{'form.action'}}) {
 1550:         $r->print('<h2>'.$action{$env{'form.action'}}.'</h2>');
 1551:     } else {
 1552:         $r->print('<p class="LC_error">'
 1553:                  .&mt('Unknown Action: [_1]',$env{'form.action'})
 1554:                  .'</p>'
 1555:                  .&Apache::loncommon::end_page()
 1556:         );
 1557:         return OK;
 1558:     }
 1559: 
 1560:     if ($env{'form.phase'} eq 'two') {
 1561: 	&Debug($r, "loncfile::handler  entering phase2");
 1562: 	&phasetwo($r,$fn,$uname,$udom);
 1563:     } else {
 1564: 	&Debug($r, "loncfile::handler  entering phase1");
 1565: 	&phaseone($r,$fn,$uname,$udom);
 1566:     }
 1567: 
 1568:     $r->print(&Apache::loncommon::end_page());
 1569:     return OK;  
 1570: }
 1571: 
 1572: 1;
 1573: __END__
 1574: 

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