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Now retrieves old versions from res to priv
# The LearningOnline Network with CAPA # Handler to retrieve an old version of a file # # (Publication Handler # # (TeX Content Handler # # 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 # 03/23 Guy Albertelli # 03/24,03/29 Gerd Kortemeyer) # # 03/31,04/03 Gerd Kortemeyer package Apache::lonretrieve; use strict; use Apache::File; use File::Copy; use Apache::Constants qw(:common :http :methods); 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; $r->print('<form action=/adm/retrieve method=post>'. '<input type=hidden name=filename value="'.$fn.'">'. '<input type=hidden name=phase value=two>'. '<table border=2><tr><th>Select</th><th>Version</th>'. '<th>Became this version on ...</th>'. '<th>Metadata</th></tr>'); my $filename; opendir(DIR,$resdir); while ($filename=readdir(DIR)) { if ($filename=~/^$main\.(\d+)\.$suffix$/) { my $version=$1; my ($rdev,$rino,$rmode,$rnlink, $ruid,$rgid,$rrdev,$rsize, $ratime,$rmtime,$rctime, $rblksize,$rblocks)=stat($resdir.'/'.$filename); $r->print('<tr><td><input type=radio name=version value="'. $version.'"></td><th>'.$version.'</th><td>'. localtime($rmtime).'</td><td>'. '<a href="'.$urldir.$filename.'.meta" target=cat>'. 'Metadata Version '.$version.'</a></td></tr>'); } } closedir(DIR); my ($rdev,$rino,$rmode,$rnlink, $ruid,$rgid,$rrdev,$rsize, $ratime,$rmtime,$rctime, $rblksize,$rblocks)=stat($resfn); $r->print('<tr><td><input type=radio name=version value="new"></td>'. '<th>Current</th><td>'.localtime($rmtime). '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'. 'Metadata current version</a></td></tr></table><p>'. '<font size=+1 color=red>Retrieval of an old version will '. 'overwrite the file currently in construction space</font><p>'. '<input type=submit value="Retrieve version"></form>'); } sub phasetwo { my ($r,$fn,$uname,$udom)=@_; if ($ENV{'form.version'}) { my $version=$ENV{'form.version'}; if ($version eq 'new') { $r->print('<h3>Retrieving current (most recent) version</h3>'); } else { $r->print('<h3>Retrieving old version '.$version.'</h3>'); } my $logfile; my $ctarget='/home/'.$uname.'/public_html'.$fn; my $vfn=$fn; if ($version ne 'new') { $vfn=~s/\.(\w+)$/\.$version\.$1/; } my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn; unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) { $r->print( '<font color=red>No write permission to user directory, FAIL</font>'); } print $logfile "\n\n================= Retrieve ".localtime()." ================\n". "Version: $version\nSource: $csource\nTarget: $ctarget\n"; $r->print('<p>Copying file: '); if (copy($csource,$ctarget)) { $r->print('ok<p>'); print $logfile "Copied sucessfully.\n\n"; } else { my $error=$!; $r->print('fail, '.$error.'<p>'); print $logfile "Copy failed: $error\n\n"; } $r->print('<font size=+2><a href="/priv/'.$uname.$fn. '">Back to '.$fn.'</a></font>'); } else { $r->print( '<font size=+1 color=red>Please pick a version to retrieve</font><p>'); &phaseone($r,$fn,$uname,$udom); } } sub handler { my $r=shift; my $fn; if ($ENV{'form.filename'}) { $fn=$ENV{'form.filename'}; $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)//; } 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 $uname=$ENV{'user.name'}; my $udom=$ENV{'user.domain'}; $r->content_type('text/html'); $r->send_http_header; $r->print('<html><head><title>LON-CAPA Construction Space</title></head>'); $r->print( '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>'); $r->print('<h1>Retrieve previous versions of <tt>'.$fn.'</tt></h1>'); if ($ENV{'form.phase'} eq 'two') { &phasetwo($r,$fn,$uname,$udom); } else { &phaseone($r,$fn,$uname,$udom); } $r->print('</body></html>'); return OK; }