yolanda/trunk/functions.pl
erlehmann 1ad9f63be7 lolol ?
git-svn-id: http://yolanda.mister-muffin.de/svn@359 7eef14d0-6ed0-489d-bf55-20463b2d70db
2008-07-30 22:36:00 +00:00

361 lines
12 KiB
Perl

require "include.pl";
sub get_userinfo_from_sid
{
#get parameters
my ($sid) = @_;
#prepare query
my $sth = $dbh->prepare(qq{select id, username, 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->{'pagesize'}) = $sth->fetchrow_array();
#finish query
$sth->finish() or die $dbh->errstr;
#return
return @userinfo;
}
sub get_page_array
{
#get parameters
my (@userinfo) = @_;
my $page = XML::LibXML::Element->new( "page" );
#get user language from browser http_accept string
my ($lang) = $query->http('HTTP_ACCEPT_LANGUAGE') =~ /^[^,]+,([^;]*);/;
$page->setAttribute( "lang", $lang ? $lang : "en" );
#TODO: set namespace for each site on its own
$page->setAttribute( "username", $userinfo->{'username'} );
return $page;
}
# index.pl (display custom search)
# search.pl (display search results)
# and upload.pl (display similar videos)
sub fill_results
{
my ($dbquery, @args) = @_;
my $results = XML::LibXML::Element->new( "results" );
#prepare query
my $sth = $dbh->prepare($dbquery) or die $dbh->errstr;
#execute it
$resultcount = $sth->execute(@args) or die $dbh->errstr;
#set pagesize by query or usersettings or default
$pagesize = $query->param('pagesize') or $pagesize = $userinfo->{'pagesize'} or $pagesize = $config->{"search_results_default"};
#if pagesize is more than maxpagesize reduce to maxpagesize
$pagesize = $pagesize > $config->{"search_results_max"} ? $config->{"search_results_max"} : $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);
$currentpage = int($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(@args) or die $dbh->errstr;
$results->setAttribute('lastpage', $lastpage);
$results->setAttribute('currentpage', $currentpage);
$results->setAttribute('resultcount', $resultcount eq '0E0' ? 0 : $resultcount);
$results->setAttribute('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())
{
#build xml node structure
my $result = XML::LibXML::Element->new( "result" );
$result->setAttribute( "thumbnail", $config->{"url_root"}."/video-stills/thumbnails/$id" );
$result->setAttribute( "preview", $config->{"url_root"}."/video-stills/previews/$id" );
$result->setAttribute( "duration", $duration );
$result->setAttribute( "viewcount", $viewcount );
my $rdf = XML::LibXML::Element->new( "RDF" );
$rdf->setNamespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "rdf");
my $work = XML::LibXML::Element->new( "Work" );
$work->setNamespace( "http://web.resource.org/cc/", "cc");
$work->setNamespace( "http://www.w3.org/1999/02/22-rdf-syntax-ns#", "rdf", 0);
$work->setAttributeNS( "http://www.w3.org/1999/02/22-rdf-syntax-ns#", "about", $config->{"url_root"}."/download/$id/" );
$node = XML::LibXML::Element->new( "coverage" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($coverage);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "creator" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($creator);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "date" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($date);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "description" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($description);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "identifier" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($config->{"url_root"}."/video/".urlencode($title)."/$id/");
$work->appendChild($node);
$node = XML::LibXML::Element->new( "language" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($language);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "publisher" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($publisher);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "rights" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($rights);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "source" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($source);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "subject" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($subjcet);
$work->appendChild($node);
$node = XML::LibXML::Element->new( "title" );
$node->setNamespace( "http://purl.org/dc/elements/1.1/", "dc" );
$node->appendText($title);
$work->appendChild($node);
my $license = XML::LibXML::Element->new( "License" );
$license->setNamespace("http://web.resource.org/cc/", "cc");
$license->setNamespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#", "rdf", 0);
$license->setAttributeNS( "http://www.w3.org/1999/02/22-rdf-syntax-ns#", "about", "http://creativecommons.org/licenses/GPL/2.0/" );
$rdf->appendChild($work);
$rdf->appendChild($license);
$result->appendChild($rdf);
$results->appendChild($result);
}
#finish query
$sth->finish() or die $dbh->errstr;
return $results;
}
sub get_sqlquery
{
my $strquery = @_[0];
$strquery =~ s/%([0-9A-F]{2})/chr(hex($1))/eg;
(@tags) = $strquery =~ / tag:(\w+)/gi;
($order) = $strquery =~ / order:(\w+)/i;
($sort) = $strquery =~ / sort:(\w+)/i;
#TODO: add those options
#($title) = $strquery =~ /title:(\w+)/i;
#($description) = $strquery =~ /description:(\w+)/i;
#($creator) = $strquery =~ /creator:(\w+)/i;
#($language) = $strquery =~ /language:(\w+)/i;
#($coverage) = $strquery =~ /coverage:(\w+)/i;
#($rights) = $strquery =~ /rights:(\w+)/i;
#($license) = $strquery =~ /license:(\w+)/i;
#($filesize) = $strquery =~ /filesize:([<>]?\w+)/i;
#($duration) = $strquery =~ /duration:([<>]?\w+)/i;
#($timestamp) = $strquery =~ /timestamp:([<>]?\w+)/i;
$strquery =~ s/ (tag|order|sort):\w+//gi;
$strquery =~ s/^\s*(.*?)\s*$/$1/;
#build mysql query
my $dbquery = "select v.id, v.title, v.description, u.username,
from_unixtime( v.timestamp ), v.creator, v.subject,
v.source, v.language, v.coverage, v.rights, v.license, filesize,
duration, width, height, fps, viewcount, downloadcount";
#only continue with a valid query string
if($strquery)
{
#select all videos
if($strquery eq "*")
{
$dbquery .= " from videos as v, users as u where u.id = v.userid";
}
#search
else
{
$dbquery .= ", match(v.title, v.description, v.subject) against( ? in boolean mode) as relevance";
$dbquery .= " from videos as v, users as u where u.id = v.userid";
$dbquery .= " and match(v.title, v.description, v.subject) against( ? in boolean mode)";
push @args, $strquery, $strquery;
}
#match tags if present
if(@tags)
{
$dbquery .= " and match(v.subject) against (? in boolean mode)";
push @args, "@tags";
}
#match publisher
if($publisher)
{
$dbquery .= " and match(u.username) against (? in boolean mode)";
push @args, "$publisher";
}
#give results the right order
if($order)
{
if($order eq 'filesize')
{
$dbquery .= " order by v.filesize";
}
elsif($order eq 'duration')
{
$dbquery .= " order by v.duration";
}
elsif($order eq 'viewcount')
{
$dbquery .= " order by v.viewcount";
}
elsif($order eq 'downloadcount')
{
$dbquery .= " order by v.downloadcount";
}
elsif($order eq 'timestamp')
{
$dbquery .= " order by v.timestamp";
}
elsif($order eq 'relevance')
{
$dbquery .= " order by relevance";
}
elsif($order eq 'random')
{
$dbquery .= " order by rand()";
}
else
{
$dbquery .= " order by $config->{'search_order_default'}";
}
if($sort eq "ascending")
{
$dbquery .= " asc";
}
elsif($sort eq "descending")
{
$dbquery .= " desc";
}
else
{
$dbquery .= " $config->{'search_sort_default'}";
}
}
return $dbquery, @args;
}
}
#replace chars in url according to RFC 1738 <http://www.rfc-editor.org/rfc/rfc1738.txt>
sub urlencode
{
my ($url) = @_[0];
$url =~ s/([^A-Za-z0-9_\$\-.+!*'()])/sprintf("%%%02X", ord($1))/eg;
return $url;
}
sub output_page
{
my $doc = shift;
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/[^a-z0-9\[\]\$\-_.+!*'(),]//gi;
if( -f "$root/xsl/$param_xslt.xsl")
{
$xsltpath = "$root/xsl/$param_xslt.xsl"
}
else
{
$xsltpath = "$root/xsl/xhtml.xsl";
}
#TODO: preload xslt stylesheet
my $stylesheet = $xslt->parse_stylesheet($parser->parse_file($xsltpath));
$output = $stylesheet->transform($doc);
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=>$stylesheet->output_encoding,
"x-pingback"=>$config->{"url_root"}."/pingback.pl"
),
print $output->toString;
#$stylesheet->output_as_bytes($output); <= for future use with XML::LibXSLT (>= 1.62)
}
}
#output info message
sub message
{
my ($type, $text, $value) = @_;
my $message = XML::LibXML::Element->new( "message" );
$message->setAttribute("type", $type);
$message->setAttribute("text", $text);
if ($value)
{
$message->setAttribute("value", $value);
}
return $message;
}