version 1.2, 2001/04/03 18:12:57
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version 1.33, 2006/11/10 18:01:08
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Handler to retrieve an old version of a file |
# Handler to retrieve an old version of a file |
# |
# |
# (Publication Handler |
# $Id$ |
# |
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# (TeX Content Handler |
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# |
# |
# 05/29/00,05/30,10/11 Gerd Kortemeyer) |
# Copyright Michigan State University Board of Trustees |
# |
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# 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
# 03/23 Guy Albertelli |
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# 03/24,03/29 Gerd Kortemeyer) |
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# |
# |
# 03/31 Gerd Kortemeyer |
# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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# |
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### |
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package Apache::lonretrieve; |
package Apache::lonretrieve; |
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Line 19 use strict;
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Line 34 use strict;
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use Apache::File; |
use Apache::File; |
use File::Copy; |
use File::Copy; |
use Apache::Constants qw(:common :http :methods); |
use Apache::Constants qw(:common :http :methods); |
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use Apache::loncacc; |
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use Apache::loncommon(); |
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use Apache::lonlocal; |
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use Apache::lonnet; |
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# ------------------------------------ Interface for selecting previous version |
sub phaseone { |
sub phaseone { |
my ($r,$fn,$uname,$udom)=@_; |
my ($r,$fn,$uname,$udom)=@_; |
my $docroot=$r->dir_config('lonDocRoot'); |
my $docroot=$r->dir_config('lonDocRoot'); |
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my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$fn; |
my $urldir='/res/'.$udom.'/'.$uname.$fn; |
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$urldir=~s/\/[^\/]+$/\//; |
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my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn; |
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my $resdir=$resfn; |
$resdir=~s/\/[^\/]+$/\//; |
$resdir=~s/\/[^\/]+$/\//; |
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$fn=~/^\/(.+)\.(\w+)$/; |
my ($main,$suffix,$is_meta) = &get_file_info($fn); |
my $main=$1; |
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my $suffix=$2; |
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my $filename; |
if (-e $resfn) { |
opendir(DIR,$resdir); |
$r->print('<form action="/adm/retrieve" method="POST">'. |
while ($filename=readdir(DIR)) { |
'<input type="hidden" name="filename" value="/~'.$uname.$fn.'" />'. |
if ($filename=~/^$main\.(\d+)\.$suffix$/) { |
'<input type="hidden" name="phase" value="two" />'. |
$r->print($resdir.' = '.$filename.'<br>'); |
&Apache::loncommon::start_data_table(). |
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&Apache::loncommon::start_data_table_header_row(). |
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'<th>'.&mt('Select').'</th>'. |
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'<th>'.&mt('Version').'</th>'. |
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'<th>'.&mt('Published on ...').'</th>'); |
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if (!$is_meta) { |
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$r->print('<th>'.&mt('Metadata').'</th>'); |
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} |
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if ($is_meta |
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|| &Apache::loncommon::fileembstyle($suffix) eq 'ssi') { |
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$r->print('<th>'.&mt('Diffs').'</th>'); |
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} |
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$r->print(&Apache::loncommon::end_data_table_header_row()); |
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opendir(DIR,$resdir); |
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my @files = grep(/^\Q$main\E\.(\d+)\.\Q$suffix\E$/,readdir(DIR)); |
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@files = sort { |
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my ($aver) = ($a=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/); |
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my ($bver) = ($b=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/); |
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return $aver <=> $bver; |
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} (@files); |
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closedir(DIR); |
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foreach my $filename (@files) { |
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if ($filename=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/) { |
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my $version=$1; |
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my $rmtime=&Apache::lonnet::metadata($resdir.'/'.$filename,'lastrevisiondate'); |
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$r->print(&Apache::loncommon::start_data_table_row(). |
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'<td><input type="radio" name="version" value="'. |
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$version.'" /></td><td>'.&mt('Previously published version').' '.$version.'</td><td>'. |
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localtime($rmtime).'</td>'); |
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if (!$is_meta) { |
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$r->print('<td><a href="'.$urldir.$filename.'.meta" target=cat>'. |
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&mt('Metadata Version').' '.$version.'</a></td>'); |
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} |
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if ($is_meta |
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|| &Apache::loncommon::fileembstyle($suffix) eq 'ssi') { |
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$r->print( |
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'<td><a target="cat" href="/adm/diff?filename=/~'. |
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$uname.$fn. |
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'&versiontwo=priv&versionone='.$version. |
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'">'.&mt('Diffs with Version').' '.$version. |
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'</a></td>'); |
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} |
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$r->print(&Apache::loncommon::end_data_table_row()); |
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} |
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} |
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closedir(DIR); |
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my $rmtime=&Apache::lonnet::metadata($resfn,'lastrevisiondate'); |
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$r->print(&Apache::loncommon::start_data_table_row(). |
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'<td><input type="radio" name="version" value="new" /></td>'. |
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'<td><b>'.&mt('Currently published version').'</b></td><td>'.localtime($rmtime). |
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'</td>'); |
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if (!$is_meta) { |
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$r->print('<td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'. |
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&mt('Metadata current version').'</a></td>'); |
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} |
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if ($is_meta |
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|| &Apache::loncommon::fileembstyle($suffix) eq 'ssi') { |
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$r->print( |
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'<td><a target="cat" href="/adm/diff?filename=/~'. |
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$uname.$fn. |
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'&versiontwo=priv'. |
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'">'.&mt('Diffs with current Version').'</a></td>'); |
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} |
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$r->print(&Apache::loncommon::end_data_table_row(). |
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&Apache::loncommon::end_data_table(). |
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'<p>'.'<span class="LC_warning">'. |
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&mt('Retrieval of an old version will overwrite the file currently in construction space').'</span></p>'); |
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if (!$is_meta) { |
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$r->print('<p>'.'<span class="LC_warning">'. |
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&mt('This will only retrieve the resource, if you want to retrieve the metadata you will need to do that separately.'). |
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'</span></p>'); |
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} |
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$r->print('<input type="submit" value="'.&mt('Retrieve version').'" /></form>'); |
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} else { |
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$r->print('<h3>'.&mt('No previous versions published.').'</h3>'); |
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} |
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$r->print('<p><a href="/priv/'.$uname.$fn.'">'.&mt('Back to').' '.$fn. |
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'</a></p>'); |
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} |
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# ---------------------------------- Interface for presenting specified version |
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sub phasetwo { |
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my ($r,$fn,$uname,$udom)=@_; |
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if ($env{'form.version'}) { |
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my $version=$env{'form.version'}; |
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if ($version eq 'new') { |
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$r->print('<h3>'.&mt('Retrieving current (most recent) version').'</h3>'); |
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} else { |
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$r->print('<h3>'.&mt('Retrieving old version').' '.$version.'</h3>'); |
} |
} |
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my ($main,$suffix,$is_meta) = &get_file_info($fn); |
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my $logfile; |
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my $ctarget='/home/'.$uname.'/public_html'.$fn; |
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my $vfn=$fn; |
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if ($version ne 'new') { |
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$vfn=~s/\.(\Q$suffix\E)$/\.$version\.$1/; |
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} |
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my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn; |
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my $logname = $ctarget; |
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if ($is_meta) { $logname =~ s/\.meta$//; } |
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$logname = $ctarget.'.log'; |
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unless ($logfile=Apache::File->new('>>'.$logname)) { |
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$r->print( |
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'<font color=red>'.&mt('No write permission to user directory, FAIL').'</font>'); |
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} |
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print $logfile |
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"\n\n================= Retrieve ".localtime()." ================\n". |
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"Version: $version\nSource: $csource\nTarget: $ctarget\n"; |
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$r->print('<p>'.&mt('Copying file').': '); |
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if (copy($csource,$ctarget)) { |
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$r->print('ok<p>'); |
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print $logfile "Copied sucessfully.\n\n"; |
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} else { |
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my $error=$!; |
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$r->print('fail, '.$error.'<p>'); |
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print $logfile "Copy failed: $error\n\n"; |
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} |
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$r->print('<font size=+2><a href="/priv/'.$uname.$fn. |
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'">'.&mt('Back to').' '.$fn.'</a></font>'); |
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} else { |
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$r->print('<span class="LC_warning">'.&mt('Please pick a version to retrieve').'</span><p>'); |
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&phaseone($r,$fn,$uname,$udom); |
} |
} |
closedir(DIR); |
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} |
} |
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sub get_file_info { |
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my ($fn) = @_; |
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my ($main,$suffix) = ($fn=~/\/([^\/]+)\.(\w+)$/); |
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my $is_meta=0; |
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if ($suffix eq 'meta') { |
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$is_meta = 1; |
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($main,$suffix) = ($main=~/(.+)\.(\w+)$/); |
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$suffix .= '.meta'; |
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} |
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return ($main,$suffix,$is_meta); |
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} |
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# ---------------------------------------------------------------- Main Handler |
sub handler { |
sub handler { |
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my $r=shift; |
my $r=shift; |
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my $fn; |
my $fn; |
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if ($ENV{'form.filename'}) { |
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$fn=$ENV{'form.filename'}; |
# Get query string for limited number of parameters |
$fn=~s/^http\:\/\/[^\/]+\/\~(\w+)//; |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, |
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['filename']); |
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if ($env{'form.filename'}) { |
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$fn=$env{'form.filename'}; |
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$fn=~s/^http\:\/\/[^\/]+//; |
} else { |
} else { |
$r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. |
$r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}. |
' unspecified filename for retrieval', $r->filename); |
' unspecified filename for retrieval', $r->filename); |
return HTTP_NOT_FOUND; |
return HTTP_NOT_FOUND; |
} |
} |
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unless ($fn) { |
unless ($fn) { |
$r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}. |
$r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}. |
' trying to retrieve non-existing file', $r->filename); |
' trying to retrieve non-existing file', $r->filename); |
return HTTP_NOT_FOUND; |
return HTTP_NOT_FOUND; |
} |
} |
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# ----------------------------------------------------------- Start page output |
# ----------------------------------------------------------- Start page output |
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my $uname; |
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my $udom; |
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($uname,$udom)= |
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&Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain')); |
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unless (($uname) && ($udom)) { |
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$r->log_reason($uname.' at '.$udom. |
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' trying to publish file '.$env{'form.filename'}. |
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' ('.$fn.') - not authorized', |
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$r->filename); |
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return HTTP_NOT_ACCEPTABLE; |
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} |
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my $uname=$ENV{'user.name'}; |
$fn=~s/\/\~(\w+)//; |
my $udom=$ENV{'user.domain'}; |
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$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
$r->send_http_header; |
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$r->print('<html><head><title>LON-CAPA Construction Space</title></head>'); |
$r->print(&Apache::loncommon::start_page('Retrieve Published Resources')); |
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$r->print( |
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'<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>'); |
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$r->print('<h1>Retrieve previous versions of <tt>'.$fn.'</tt></h1>'); |
$r->print('<h1>'.&mt('Retrieve previous versions of').' <tt>'.$fn.'</tt></h1>'); |
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if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) { |
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$r->print('<h3><span class="LC_diff_coauthor">'.&mt('Co-Author').': '.$uname. |
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&mt(' at ').$udom. |
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'</span></h3>'); |
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} |
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if ($ENV{'form.phase'} eq 'two') { |
if ($env{'form.phase'} eq 'two') { |
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&phasetwo($r,$fn,$uname,$udom); |
} else { |
} else { |
&phaseone($r,$fn,$uname,$udom); |
&phaseone($r,$fn,$uname,$udom); |
} |
} |
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$r->print('</body></html>'); |
$r->print(&Apache::loncommon::end_page()); |
return OK; |
return OK; |
} |
} |
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1; |
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__END__ |
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=head1 NAME |
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Apache::lonretrieve - retrieves an old version of a file |
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=head1 SYNOPSIS |
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Invoked by /etc/httpd/conf/srm.conf: |
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<Location /adm/retrieve> |
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PerlAccessHandler Apache::lonacc |
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SetHandler perl-script |
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PerlHandler Apache::lonretrieve |
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ErrorDocument 403 /adm/login |
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ErrorDocument 404 /adm/notfound.html |
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ErrorDocument 406 /adm/unauthorized.html |
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ErrorDocument 500 /adm/errorhandler |
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</Location> |
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=head1 INTRODUCTION |
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This module retrieves an old published version of a file. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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This routine is called by Apache and mod_perl. |
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=over 4 |
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=item * |
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Get query string for limited number of parameters |
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=item * |
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Start page output |
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=item * |
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print phase relevant output |
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=item * |
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(phase one is to select version; phase two retrieves version) |
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=back |
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=head1 OTHER SUBROUTINES |
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=over 4 |
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=item * |
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phaseone() : Interface for selecting previous version. |
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=item * |
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phasetwo() : Interface for presenting specified version. |
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=back |
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=cut |