yolanda/trunk/uploader.pl

182 lines
8.2 KiB
Perl
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require "functions.pl";
CGI::Session->name($session_name);
$query = CGI->new(\&hook);
$session = new CGI::Session;
sub hook
{
#this is going to become an ajax progress bar
#alternatively, reloading every N seconds (mozilla doesn't flicker)
my ($filename, $buffer, $bytes_read, $data) = @_;
#print $ENV{'CONTENT_LENGTH'};
#print sha256_hex($buffer);
#open(TEMP, ">>/var/www/perl/videos/temp.temp") or die "cannot open";
#print "Read $bytes_read bytes of $filename\n";
#close TEMP;
}
@userinfo = get_userinfo_from_sid($session->id);
@page = get_page_array(@userinfo);
if($userinfo->{'id'} && $query->param("DC.Title") &&
$query->param("DC.Description") && $query->param("DC.Subject"))
{
#make new entry for video into the databse
#FIXME: contributor, rights
$dbh->do(qq{insert into uploaded (title, description, userid, timestamp,
creator, subject, source, language, coverage, rights, license)
values ( ?, ?, ?, unix_timestamp(), ?, ?, ?, ?, ?, ?, ? )}, undef,
$query->param("DC.Title"), $query->param("DC.Description"), $userinfo->{'id'},
$query->param("DC.Creator"), $query->param("DC.Subject"), $query->param("DC.Source"),
$query->param("DC.Language"), $query->param("DC.Coverage"),
$query->param("DC.Rights"), $query->param("DC.License")) or die $dbh->errstr;
#get the id of the inserted db entry
$sth = $dbh->prepare(qq{select last_insert_id() }) or die $dbh->errstr;
$sth->execute() or die $dbh->errstr;
my ($id) = $sth->fetchrow_array() or die $dbh->errstr;
$sth->finish() or die $dbh->errstr;
#save uploaded file into temppath
$upload_filehandle = $query->upload("file");
open(TEMPFILE, ">/tmp/$id");
while ( <$upload_filehandle> )
{
print TEMPFILE;
}
close TEMPFILE;
$info = `export SDL_VIDEODRIVER="dummy"; ffplay -stats -an -vn -nodisp /tmp/$id 2>&1`;
if($info =~ /ignoring/)
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
unlink "/tmp/$id";
print $query->redirect("index.pl?error=error_upload_invalid_stream");
}
elsif ($info =~ /I\/O error occured/)
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
unlink "/tmp/$id";
print $query->redirect("index.pl?error=error_upload_io");
}
elsif ($info =~ /Unknown format/ or $info =~ /could not find codec parameters/)
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
unlink "/tmp/$id";
print $query->redirect("index.pl?error=error_upload_not_a_video");
}
else
{
$sha = new Digest::SHA(256);
$sha->addfile("/tmp/$id");
$sha = $sha->hexdigest;
#check if this hash is already in database
my $sth = $dbh->prepare(qq{select id from videos where hash = ? limit 1}) or die $dbh->errstr;
$sth->execute($sha) or die $dbh->errstr;
my ($resultid) = $sth->fetchrow_array();
$sth->finish() or die $dbh->errstr;
#if so, then video is a duplicate (alternatively ALL HAIL QUANTUM COMPUTING)
if($resultid)
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
unlink "/tmp/$id";
print $query->redirect("index.pl?error=error_upload_duplicate");
}
else
{
($container, $duration) = $info =~ /Input \#0, (\w+),.+?\n.+?Duration: (\d{2}:\d{2}:\d{2}\.\d)/;
#these two regexes have to be applied seperately because nobody knows which stream (audio or video) comes first
($audio) = $info =~ /Audio: (\w+)/;
($video, $width, $height, $fps) = $info =~ /Video: ([\w\d]+),.+?(\d+)x(\d+),.+?(\d+\.\d+) fps/;
if(!$video or !$duration)
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
unlink "/tmp/$id";
print $query->redirect("index.pl?error=error_upload_invalid_stream");
}
else
{
$filesize = -s "/tmp/$id";
#convert hh:mm:ss.s duration to full seconds - thanks perl for making this so damn easy!
#don't want to know how this would look in python or php... hell I don't even have to create extra variables!
$duration =~ /^(\d{2}):(\d{2}):(\d{2})\.(\d)$/;
$duration = int($1*3600 + $2*60 + $3 + $4/10 + .5);
#create thumbnail
$thumbnailsec = int(rand($duration));
$previewsec = $thumbnailsec;
#the width/height calculation could of course be much shorter but less readable then
#all thumbs have equal height
$tnmaxheight = 120;
$tnheight = $tnmaxheight;
$tnwidth = int($tnheight*($width/$height)/2 + .5)*2;
$ffthumb = system "ffmpeg -i /tmp/$id -vcodec mjpeg -vframes 1 -an -f rawvideo -ss $thumbnailsec -s ".$tnwidth."x$tnheight $root/video-stills/thumbnails/$id";
$ffprev = system "ffmpeg -i /tmp/$id -vcodec mjpeg -vframes 1 -an -f rawvideo -ss $previewsec $root/video-stills/previews/$id";
#if thumbnail was created successfully
if($ffthumb == 0 and $ffprev == 0)
{
$vmaxheight = 640;
#check if the upload already is in the right format and smaller/equal max-width/height
if ($container eq 'ogg' and $video eq 'theora' and ($audio eq 'vorbis' or not $audio) and $height <= $vmaxheight)
{
if(move("/tmp/$id", "$root/videos/$id"))
{
#add video to videos table
$dbh->do(qq{insert into videos select id, title, description, userid, timestamp, creator,
subject, source, language, coverage, rights, license, ?, ?, ?, ?, ?, ?, 0, 0
from uploaded where id = ?}, undef, $filesize, $duration, $width,
$height, $fps, $sha, $id) or die $dbh->errstr;
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
}
else
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
die "cannot move video to $root/videos/$id - check your permissions!"
}
}
else
{
#write all valueable information to database so the daemon can fetch it
$dbh->do(qq{update uploaded set filesize = ?, duration = ?, width = ?,
height = ?, fps = ?, hash = ? where id = ?}, undef, $filesize, $duration, $width,
$height, $fps, $sha, $id) or die $dbh->errstr;
}
#print success to the user
print $query->redirect("index.pl?information=information_uploaded&value=$domain/video/".urlencode($query->param("DC.Title"))."/$id/");
}
else
{
#delete from uploaded table
$dbh->do(qq{delete from uploaded where id = ?}, undef, $id) or die $dbh->errstr;
die "cannot create thumbnails - check your permissions!";
}
}
}
}
}
else
{
print $query->redirect("index.pl?error=error_202c");
}