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Diff for /loncom/publisher/lonretrieve.pm between versions 1.7 and 1.42

version 1.7, 2001/05/02 20:34:34 version 1.42, 2010/12/14 16:26:04
Line 1 Line 1
 # 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  # $Id$
 #   
 # (TeX Content Handler  
 #  #
 # 05/29/00,05/30,10/11 Gerd Kortemeyer)  # Copyright Michigan State University Board of Trustees
 #  #
 # 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  
 # 03/24,03/29 Gerd Kortemeyer)  
 #  #
 # 03/31,04/03 Gerd Kortemeyer  # 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/
   #
   #
   ###
   
   =head1 NAME
   
   Apache::lonretrieve - retrieves an old version of a file
   
   =head1 SYNOPSIS
   
   Invoked by /etc/httpd/conf/srm.conf:
   
    <Location /adm/retrieve>
    PerlAccessHandler       Apache::lonacc
    SetHandler perl-script
    PerlHandler Apache::lonretrieve
    ErrorDocument     403 /adm/login
    ErrorDocument     404 /adm/notfound.html
    ErrorDocument     406 /adm/unauthorized.html
    ErrorDocument  500 /adm/errorhandler
    </Location>
   
   =head1 INTRODUCTION
   
   This module retrieves an old published version of a file.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 HANDLER SUBROUTINE
   
   This routine is called by Apache and mod_perl.
   
   =over 4
   
   =item *
   
   Get query string for limited number of parameters
   
   =item *
   
   Start page output
   
   =item *
   
   print phase relevant output
   
   =item *
   
   (phase one is to select version; phase two retrieves version)
   
   =back
   
   =head1 OTHER SUBROUTINES
   
   =over 4
   
   =item *
   
   phaseone() : Interface for selecting previous version.
   
   =item *
   
   phasetwo() : Interface for presenting specified version.
   
   =back
   
   =cut
   
 package Apache::lonretrieve;  package Apache::lonretrieve;
   
Line 19  use strict; Line 99  use strict;
 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);
   use Apache::loncacc;
   use Apache::loncommon();
   use Apache::lonlocal;
   use Apache::lonnet;
   use LONCAPA();
   
   # ------------------------------------ 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');
Line 31  sub phaseone { Line 117  sub phaseone {
     my $resdir=$resfn;      my $resdir=$resfn;
     $resdir=~s/\/[^\/]+$/\//;      $resdir=~s/\/[^\/]+$/\//;
   
     $fn=~/\/([^\/]+)\.(\w+)$/;      my ($main,$suffix,$is_meta) = &get_file_info($fn);
     my $main=$1;      
     my $suffix=$2;  
   
     if (-e $resfn) {        if (-e $resfn) {  
     $r->print('<form action=/adm/retrieve method=post>'.   $r->print('<form action="/adm/retrieve" method="post">'.
       '<input type=hidden name=filename value="'.$fn.'">'.    '<input type="hidden" name="filename" value="/~'.$uname.$fn.'" />'.
               '<input type=hidden name=phase value=two>'.    '<input type="hidden" name="phase" value="two" />'.
               '<table border=2><tr><th>Select</th><th>Version</th>'.    &Apache::loncommon::start_data_table().
               '<th>Became this version on ...</th>'.    &Apache::loncommon::start_data_table_header_row().
               '<th>Metadata</th></tr>');    '<th>'.&mt('Select').'</th>'.
     my $filename;    '<th>'.&mt('Version').'</th>'.
     opendir(DIR,$resdir);    '<th>'.&mt('Published on ...').'</th>');
     while ($filename=readdir(DIR)) {   if (!$is_meta) {
         if ($filename=~/^$main\.(\d+)\.$suffix$/) {      $r->print('<th>'.&mt('Metadata').'</th>');
    my $version=$1;   }
            my ($rdev,$rino,$rmode,$rnlink,   if ($is_meta
                 $ruid,$rgid,$rrdev,$rsize,      || &Apache::loncommon::fileembstyle($suffix) eq 'ssi') {
                 $ratime,$rmtime,$rctime,      $r->print('<th>'.&mt('Diffs').'</th>');
                 $rblksize,$rblocks)=stat($resdir.'/'.$filename);   }
            $r->print('<tr><td><input type=radio name=version value="'.   $r->print(&Apache::loncommon::end_data_table_header_row());
                      $version.'"></td><th>'.$version.'</th><td>'.  
                      localtime($rmtime).'</td><td>'.   opendir(DIR,$resdir);
                      '<a href="'.$urldir.$filename.'.meta" target=cat>'.   my @files = grep(/^\Q$main\E\.(\d+)\.\Q$suffix\E$/,readdir(DIR));
                      'Metadata Version '.$version.'</a></td></tr>');   @files = sort {
         }      my ($aver) = ($a=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/);
       my ($bver) = ($b=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/);
       return $aver <=> $bver;
    } (@files);
    closedir(DIR);
   
    foreach my $filename (@files) {
       if ($filename=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/) {
    my $version=$1;
    my $rmtime=&Apache::lonnet::metadata($resdir.'/'.$filename,'lastrevisiondate');
    $r->print(&Apache::loncommon::start_data_table_row().
     '<td><input type="radio" name="version" value="'.
     $version.'" /></td><td>'.&mt('Previously published version').' '.$version.'</td>'.
                 '<td>'.&Apache::lonlocal::locallocaltime($rmtime).'</td>');
   
    if (!$is_meta) {
       $r->print('<td><a href="'.$urldir.$filename.'.meta" target="cat">'.
         &mt('Metadata Version').' '.$version.'</a></td>');
    }
    if ($is_meta
       || &Apache::loncommon::fileembstyle($suffix) eq 'ssi') {
       $r->print(
         '<td><a target="cat" href="/adm/diff?filename=/~'.
         $uname.$fn.
         '&amp;versiontwo=priv&amp;versionone='.$version.
         '">'.&mt('Diffs with Version').' '.$version.
         '</a></td>');
    }
    $r->print(&Apache::loncommon::end_data_table_row());
       }
    }
    closedir(DIR);
    my $rmtime=&Apache::lonnet::metadata($resfn,'lastrevisiondate');
    $r->print(&Apache::loncommon::start_data_table_row().
     '<td><input type="radio" name="version" value="new" /></td>'.
     '<td><b>'.&mt('Currently published version').'</b></td>'.
             '<td>'.&Apache::lonlocal::locallocaltime($rmtime).'</td>'
       );
    if (!$is_meta) {
       $r->print('<td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target="cat">'.
         &mt('Metadata current version').'</a></td>');           
    }
    if ($is_meta 
       || &Apache::loncommon::fileembstyle($suffix) eq 'ssi') {
       $r->print(
         '<td><a target="cat" href="/adm/diff?filename=/~'.
         $uname.$fn.
         '&amp;versiontwo=priv'.
         '">'.&mt('Diffs with current Version').'</a></td>');
    }
    $r->print(&Apache::loncommon::end_data_table_row().
     &Apache::loncommon::end_data_table().
     '<p>'.'<span class="LC_warning">'.
     &mt('Retrieval of an old version will overwrite the file currently in construction space.').'</span></p>');
    if (!$is_meta) {
       $r->print('<p>'.'<span class="LC_warning">'.
         &mt('This will only retrieve the resource. If you want to retrieve the metadata, you will need to do that separately.').
         '</span></p>');
    }
    $r->print('<input type="submit" value="'.&mt('Retrieve selected Version').'" /></form>');
       } else {
    $r->print('<p class="LC_warning">'.&mt('No previous versions published.').'</p>');
     }      }
     closedir(DIR);  
     my ($rdev,$rino,$rmode,$rnlink,      my $dir =  &Apache::loncommon::authorspace()
         $ruid,$rgid,$rrdev,$rsize,                .&File::Basename::dirname($fn)
         $ratime,$rmtime,$rctime,                .'/';
         $rblksize,$rblocks)=stat($resfn);      $r->print(&Apache::lonhtmlcommon::start_funclist()
     $r->print('<tr><td><input type=radio name=version value="new"></td>'.               .&Apache::lonhtmlcommon::add_item_funclist(
               '<th>Current</th><td>'.localtime($rmtime).                    '<a href="/priv/'.$uname.$fn.'">'
            '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'.                   .&mt('Back to Resource')
               'Metadata current version</a></td></tr></table><p>'.                   .'</a>')
            '<font size=+1 color=red>Retrieval of an old version will '.               .&Apache::lonhtmlcommon::add_item_funclist(
            'overwrite the file currently in construction space</font><p>'.                    '<a href="'.$dir.'">'
            '<input type=submit value="Retrieve version"></form>');                   .&mt('Back to Directory')
 } else {                   .'</a>')
     $r->print('<h3>No previous versions published.</h3>');               .&Apache::lonhtmlcommon::end_funclist()
 }      );
 }  }
   
   # ---------------------------------- Interface for presenting specified version
 sub phasetwo {  sub phasetwo {
     my ($r,$fn,$uname,$udom)=@_;      my ($r,$fn,$uname,$udom)=@_;
     if ($ENV{'form.version'}) {      if ($env{'form.version'}) {
         my $version=$ENV{'form.version'};          my $version=$env{'form.version'};
  if ($version eq 'new') {   if ($version eq 'new') {
     $r->print('<h3>Retrieving current (most recent) version</h3>');      $r->print('<h3>'.&mt('Retrieving current (most recent) version').'</h3>');
         } else {          } else {
             $r->print('<h3>Retrieving old version '.$version.'</h3>');              $r->print('<h3>'.&mt('Retrieving old version').' '.$version.'</h3>');
         }          }
    my ($main,$suffix,$is_meta) = &get_file_info($fn);
   
         my $logfile;          my $logfile;
         my $ctarget='/home/'.$uname.'/public_html'.$fn;          my $ctarget='/home/'.$uname.'/public_html'.$fn;
         my $vfn=$fn;          my $vfn=$fn;
         if ($version ne 'new') {          if ($version ne 'new') {
     $vfn=~s/\.(\w+)$/\.$version\.$1/;      $vfn=~s/\.(\Q$suffix\E)$/\.$version\.$1/;
         }          }
   
         my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn;          my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn;
         unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) {  
   $r->print(   my $logname = $ctarget;
          '<font color=red>No write permission to user directory, FAIL</font>');   if ($is_meta) { $logname =~ s/\.meta$//; }
    $logname = $ctarget.'.log';
           unless ($logfile=Apache::File->new('>>'.$logname)) {
             $r->print('<span class="LC_error">'
                      .&mt('No write permission to user directory, FAIL')
                      .'</span>');
         }          }
         print $logfile           print $logfile 
 "\n\n================= Retrieve ".localtime()." ================\n".  "\n\n================= Retrieve ".localtime()." ================\n".
 "Version: $version\nSource: $csource\nTarget: $ctarget\n";  "Version: $version\nSource: $csource\nTarget: $ctarget\n";
         $r->print('<p>Copying file: ');          $r->print('<p>'.&mt('Copying file').': ');
         if (copy($csource,$ctarget)) {   if (copy($csource,$ctarget)) {
     $r->print('ok<p>');      $r->print('<span class="LC_success">'
                        .&mt('ok')
                        .'</span>');
             print $logfile "Copied sucessfully.\n\n";              print $logfile "Copied sucessfully.\n\n";
         } else {          } else {
             my $error=$!;              my $error=$!;
     $r->print('fail, '.$error.'<p>');      $r->print('<span class="LC_error">'
                        .&mt('Copy failed: [_1]',$error)
                        .'</span>');
             print $logfile "Copy failed: $error\n\n";              print $logfile "Copy failed: $error\n\n";
         }          }
         $r->print('<font size=+2><a href="/priv/'.$uname.$fn.          $r->print('</p>'
                   '">Back to '.$fn.'</a></font>');                    .'<p><a href="/priv/'.$uname.$fn.'">'
                    .&mt('Back to Resource')
                    .'</a></p>');
     } else {      } else {
        $r->print(         $r->print('<p class="LC_info">'.&mt('Please pick a version to retrieve:').'</p>');
    '<font size=+1 color=red>Please pick a version to retrieve</font><p>');  
        &phaseone($r,$fn,$uname,$udom);         &phaseone($r,$fn,$uname,$udom);
     }      }
 }  }
   
   sub get_file_info {
       my ($fn) = @_;
       my ($main,$suffix) = ($fn=~/\/([^\/]+)\.(\w+)$/);
       my $is_meta=0;
       if ($suffix eq 'meta') {
    $is_meta = 1;
    ($main,$suffix) = ($main=~/(.+)\.(\w+)$/);    
    $suffix .= '.meta';
       }
       return ($main,$suffix,$is_meta);
   }
   
   # ---------------------------------------------------------------- Main Handler
 sub handler {  sub handler {
   
   my $r=shift;    my $r=shift;
   
   my $fn;    my $fn;
   
   if ($ENV{'form.filename'}) {  
       $fn=$ENV{'form.filename'};  # Get query string for limited number of parameters
       $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)//;  
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
     ['filename']);
   
     if ($env{'form.filename'}) {
         $fn=$env{'form.filename'};
         $fn=~s/^https?\:\/\/[^\/]+//;
   } 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;
   }    }
   
   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;
   }     } 
   
 # ----------------------------------------------------------- Start page output  # ----------------------------------------------------------- Start page output
     my $uname;
     my $udom;
   
   my $uname=$ENV{'user.name'};    ($uname,$udom)=
   my $udom=$ENV{'user.domain'};      &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
     unless (($uname) && ($udom)) {
   $r->content_type('text/html');       $r->log_reason($uname.' at '.$udom.
   $r->send_http_header;           ' trying to publish file '.$env{'form.filename'}.
            ' ('.$fn.') - not authorized', 
            $r->filename); 
        return HTTP_NOT_ACCEPTABLE;
     }
   
   $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');    $fn=~s{/~($LONCAPA::username_re)}{};
   
   $r->print(    &Apache::loncommon::content_type($r,'text/html');
    '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');    $r->send_http_header;
   
       # Breadcrumbs
       &Apache::lonhtmlcommon::clear_breadcrumbs();
       &Apache::lonhtmlcommon::add_breadcrumb({
           'text'  => 'Construction Space',
           'href'  => &Apache::loncommon::authorspace(),
       });
       &Apache::lonhtmlcommon::add_breadcrumb({
           'text'  => 'Retrieve previous version',
           'href'  => '',
       });
   
     $r->print(&Apache::loncommon::start_page('Retrieve Published Resources')
              .&Apache::lonhtmlcommon::breadcrumbs()
              .&Apache::loncommon::head_subbox(
                   &Apache::loncommon::CSTR_pageheader()) # FIXME crumbs broken?
       );
   
     $r->print('<p>'
              .&mt('Retrieve previous versions of [_1]'
                      ,'<span class="LC_filename">'.$fn.'</span>')
              .'</p>');
       
   $r->print('<h1>Retrieve previous versions of <tt>'.$fn.'</tt></h1>');    if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
             $r->print('<p><span class="LC_info">'
                      .&mt('Co-Author [_1]'
                          ,&Apache::loncommon::plainname($uname,$udom)
                          .' ('.$uname.':'.$udom.')')
                      .'</span></p>');
     }
   
   if ($ENV{'form.phase'} eq 'two') {  
     if ($env{'form.phase'} eq 'two') {
       &phasetwo($r,$fn,$uname,$udom);        &phasetwo($r,$fn,$uname,$udom);
   } else {    } else {
       &phaseone($r,$fn,$uname,$udom);        &phaseone($r,$fn,$uname,$udom);
   }    }
   
   $r->print('</body></html>');    $r->print(&Apache::loncommon::end_page());
   return OK;      return OK;  
 }  }
   
 1;  1;
 __END__  __END__
   
   
Removed from v.1.7  
changed lines
  Added in v.1.42

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