yolanda/trunk/functions.pl
erlehmann 64bc812fc0 rudimentary makefile, example backend configuration file, message when
no plugin is detected


git-svn-id: http://yolanda.mister-muffin.de/svn@296 7eef14d0-6ed0-489d-bf55-20463b2d70db
2008-04-13 22:19:59 +00:00

212 lines
6.6 KiB
Perl

require "include.pl";
sub get_userinfo_from_sid
{
#get parameters
my ($sid) = @_;
#prepare query
my $sth = $dbh->prepare(qq{select id, username, locale, pagesize from users where sid = ?}) or die $dbh->errstr;
#execute it
$sth->execute($sid) or die $dbh->errstr;
#save the resulting username
($userinfo->{'id'}, $userinfo->{'username'}, $userinfo->{'locale'}, $userinfo->{'pagesize'}) = $sth->fetchrow_array();
#finish query
$sth->finish() or die $dbh->errstr;
#return
return @userinfo;
}
sub get_page_array
{
#get parameters
my (@userinfo) = @_;
#if user is logged in, use his locale setting and check for new upload status
if($userinfo->{'username'})
{
$page->{'locale'} = $userinfo->{'locale'};
}
#else get the locale from the http server variable
else
{
($page->{'locale'}) = $query->http('HTTP_ACCEPT_LANGUAGE') =~ /^([^,]+),.*$/;
unless($page->{'locale'})
{
$page->{'locale'} = "en_us";
}
}
$page->{'username'} = $userinfo->{'username'};
$page->{'stylesheet'} = $stylesheet;
$page->{'xmlns:dc'} = $xmlns_dc;
$page->{'xmlns:cc'} = $xmlns_cc;
$page->{'xmlns:rdf'} = $xmlns_rdf;
}
# called by video.pl (display ambiguous videos),
# search.pl (display search results)
# and upload.pl (display similar videos)
sub fill_results
{
#prepare query
my $sth = $dbh->prepare($dbquery) or die $dbh->errstr;
#execute it
$resultcount = $sth->execute(@_) or die $dbh->errstr;
#set pagesize by query or usersettings or default
$pagesize = $query->param('pagesize') or $pagesize = $userinfo->{'pagesize'} or $pagesize = $defaultpagesize;
#if pagesize is more than maxpagesize reduce to maxpagesize
$pagesize = $pagesize > $maxpagesize ? $maxpagesize : $pagesize;
#rediculous but funny round up, will fail with 100000000000000 results per page
#on 0.0000000000001% of all queries - this is a risk we can handle
$lastpage = int($resultcount/$pagesize+0.99999999999999);
$currentpage = $query->param('page') or $currentpage = 1;
$dbquery .= " limit ".($currentpage-1)*$pagesize.", ".$pagesize;
#prepare query
$sth = $dbh->prepare($dbquery) or die $dbh->errstr;
#execute it
$sth->execute(@_) or die $dbquery;
$page->{'results'}->{'lastpage'} = $lastpage;
$page->{'results'}->{'currentpage'} = $currentpage;
$page->{'results'}->{'resultcount'} = $resultcount eq '0E0' ? 0 : $resultcount;
$page->{'results'}->{'pagesize'} = $pagesize;
#get every returned value
while (my ($id, $title, $description, $publisher, $timestamp, $creator,
$subject, $source, $language, $coverage, $rights,
$license, $filesize, $duration, $width, $height, $fps, $viewcount,
$downloadcount) = $sth->fetchrow_array())
{
#before code cleanup, this was a really obfuscated array/hash creation
push @{ $page->{'results'}->{'result'} },
{
'thumbnail' => "$domain/video-stills/thumbnails/$id",
'preview' => "$domain/video-stills/previews/$id",
'duration' => $duration,
'viewcount' => $viewcount,
'rdf:RDF' =>
{
'cc:Work' =>
{
'rdf:about' => "$domain/download/$id/",
'dc:title' => [$title],
'dc:creator' => [$creator],
'dc:subject' => [$subject],
'dc:description' => [$description],
'dc:publisher' => [$publisher],
'dc:date' => [$timestamp],
'dc:identifier' => ["$domain/video/".urlencode($title)."/$id/" . ($duration == 0 ? "/action=edit" : "")],
'dc:source' => [$source],
'dc:language' => [$language],
'dc:coverage' => [$coverage],
'dc:rights' => [$rights]
},
'cc:License' =>
{
'rdf:about' => 'http://creativecommons.org/licenses/GPL/2.0/'
}
}
};
}
#finish query
$sth->finish() or die $dbh->errstr;
}
#replace chars in url according to RFC 1738 <http://www.rfc-editor.org/rfc/rfc1738.txt>
sub urlencode
{
my ($url) = @_[0];
$url =~ s/([^A-Za-z0-9_\$\-.+!*'()])/sprintf("%%%02X", ord($1))/eg;
return $url;
}
sub output_page
{
use XML::LibXSLT;
use XML::LibXML;
my $parser = XML::LibXML->new();
my $xslt = XML::LibXSLT->new();
# let the XSLT param choose other stylesheets or default to xhtml.xsl
my $param_xslt = $query->param('xslt');
$param_xslt =~ s/[^\w]//gi;
# "null" is a debuggin option, make it so that this doesn't show up in the final product
if($param_xslt eq "null")
{
return $session->header(
-type=>'application/xml',
-charset=>'UTF-8',
),
XMLout(
$page,
KeyAttr => {},
RootName => 'page'
);
}
else
{
if( -f "$root/xsl/$param_xslt.xsl")
{
$xsltpath = "$root/xsl/$param_xslt.xsl"
}
else
{
$xsltpath = "$root/xsl/xhtml.xsl";
}
my $stylesheet = $xslt->parse_stylesheet($parser->parse_file($xsltpath));
$output = $stylesheet->transform(
$parser->parse_string(
XMLout(
$page,
KeyAttr => {},
RootName => 'page'
)
)
);
if($param_xslt eq "xspf")
{
return $session->header(
-type=>$stylesheet->media_type,
-charset=>$stylesheet->output_encoding,
-attachment=>$query->param('query').".xspf",
),
$output->toString;
#$stylesheet->output_as_bytes($output); <= for future use with XML::LibXSLT (>= 1.62)
}
elsif($param_xslt eq "pr0n")
{
return $session->header(
-status=>'402 Payment required',
-cost=>'$9001.00', # OVER NEIN THOUSAND
)
}
else
{
return $session->header(
-type=>$stylesheet->media_type,
-charset=>$stylesheet->output_encoding,
),
$output->toString;
#$stylesheet->output_as_bytes($output); <= for future use with XML::LibXSLT (>= 1.62)
}
}
}