# The LearningOnline Network with CAPA # Handler to retrieve an old version of a file # # $Id: lonretrieve.pm,v 1.25 2004/07/02 09:41:07 albertel Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # # (Publication Handler # # (TeX Content Handler # # YEAR=2000 # 05/29/00,05/30,10/11 Gerd Kortemeyer) # # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer # YEAR=2001 # 03/23 Guy Albertelli # 03/24,03/29 Gerd Kortemeyer) # # 03/31,04/03,05/02,05/09,06/23,08/20 Gerd Kortemeyer # ### package Apache::lonretrieve; use strict; use Apache::File; use File::Copy; use Apache::Constants qw(:common :http :methods); use Apache::loncacc; use Apache::loncommon(); use Apache::lonlocal; # ------------------------------------ Interface for selecting previous version sub phaseone { my ($r,$fn,$uname,$udom)=@_; my $docroot=$r->dir_config('lonDocRoot'); my $urldir='/res/'.$udom.'/'.$uname.$fn; $urldir=~s/\/[^\/]+$/\//; my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn; my $resdir=$resfn; $resdir=~s/\/[^\/]+$/\//; $fn=~/\/([^\/]+)\.(\w+)$/; my $main=$1; my $suffix=$2; if (-e $resfn) { $r->print('
'); } else { $r->print(''.&mt('Copying file').': '); if (copy($csource,$ctarget)) { $r->print('ok
'); print $logfile "Copied sucessfully.\n\n"; } else { my $error=$!; $r->print('fail, '.$error.'
'); print $logfile "Copy failed: $error\n\n"; } $r->print(''.&mt('Back to').' '.$fn.''); } else { $r->print( ''.&mt('Please pick a version to retrieve').'
'); &phaseone($r,$fn,$uname,$udom); } } # ---------------------------------------------------------------- Main Handler sub handler { my $r=shift; my $fn; # Get query string for limited number of parameters &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['filename']); if ($ENV{'form.filename'}) { $fn=$ENV{'form.filename'}; $fn=~s/^http\:\/\/[^\/]+//; } else { $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. ' unspecified filename for retrieval', $r->filename); return HTTP_NOT_FOUND; } unless ($fn) { $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. ' trying to retrieve non-existing file', $r->filename); return HTTP_NOT_FOUND; } # ----------------------------------------------------------- Start page output my $uname; my $udom; ($uname,$udom)= &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain')); unless (($uname) && ($udom)) { $r->log_reason($uname.' at '.$udom. ' trying to publish file '.$ENV{'form.filename'}. ' ('.$fn.') - not authorized', $r->filename); return HTTP_NOT_ACCEPTABLE; } $fn=~s/\/\~(\w+)//; &Apache::loncommon::content_type($r,'text/html'); $r->send_http_header; $r->print('