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added pingback capabilities

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git-svn-id: http://yolanda.mister-muffin.de/svn@314 7eef14d0-6ed0-489d-bf55-20463b2d70db
This commit is contained in:
josch 2008-04-22 20:08:02 +00:00
parent 0a27a8c730
commit bc77df2335
7 changed files with 227 additions and 8 deletions
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4
trunk/apache.conf
View file

@ -15,8 +15,8 @@ NameVirtualHost *
AllowEncodedSlashes On
RewriteEngine On
RewriteRule ^/video/(.*)/([0-9]*)/(.*)$ /video.pl?title=$1&id=$2&$3
RewriteRule ^/embedded/(.*)/([0-9]*)/(.*)$ /video.pl?title=$1&id=$2&embed=true&$3
RewriteRule ^/video/(.*)/([0-9]+)/(.*)$ /video.pl?title=$1&id=$2&$3
RewriteRule ^/embedded/(.*)/([0-9]+)/(.*)$ /video.pl?title=$1&id=$2&embed=true&$3
RewriteRule ^/download/([0-9]+)/(.*)$ /download.pl?id=$1&$2
ErrorLog /var/log/apache2/error.log

4
trunk/functions.pl
View file

@ -235,9 +235,6 @@ sub urlencode
sub output_page
{
use XML::LibXSLT;
use XML::LibXML;
my $parser = XML::LibXML->new();
my $xslt = XML::LibXSLT->new();
@ -303,6 +300,7 @@ sub output_page
return $session->header(
-type=>$stylesheet->media_type,
-charset=>$stylesheet->output_encoding,
"x-pingback"=>$config->{"url_root"}."/pingback.pl"
),
$output->toString;
#$stylesheet->output_as_bytes($output); <= for future use with XML::LibXSLT (>= 1.62)

6
trunk/include.pl
View file

@ -7,8 +7,12 @@ use XML::Simple qw(:strict);
use Digest::SHA qw(sha256_hex);
use LWPx::ParanoidAgent;
use Net::OpenID::Consumer;
use CGI::Carp qw(fatalsToBrowser set_message);
use File::Copy;
use XML::LibXSLT;
use XML::LibXML;
use LWP::UserAgent;
use HTTP::Request;
use CGI::Carp qw(fatalsToBrowser set_message);
set_message("It's not a bug, it's a feature!!<br />(include this error message in your bugreport here: <a href=\"http://yolanda.mister-muffin.de/newticket\">Yolanda bugtracker</a>)");

14
trunk/init_sql.pl
View file

@ -117,7 +117,19 @@ $dbh->do(qq{create table
id int auto_increment not null,
userid int not null,
videoid int not null,
text varchar(255) not null,
text text not null,
timestamp bigint not null,
primary key (id)
)
}) or die $dbh->errstr;
$dbh->do(qq{create table
pingbacks
(
id int auto_increment not null,
source varchar(255) not null,
videoid int not null,
text text not null,
timestamp bigint not null,
primary key (id)
)

137
trunk/pingback.pl Normal file
View file

@ -0,0 +1,137 @@
require "functions.pl";
#initialize session data
CGI::Session->name($config->{"page_cookie_name"});
$query = new CGI;
$session = new CGI::Session;
if ($query->param("POSTDATA"))
{
my $xmlpost = XMLin($query->param("POSTDATA"), ForceArray => 0, KeyAttr => 0);
if (!$@)
{
my $method = $xmlpost->{"methodName"};
my $source = $xmlpost->{"params"}->{"param"}[0]->{"value"}->{"string"};
my $target = $xmlpost->{"params"}->{"param"}[1]->{"value"}->{"string"};
if ($method eq "pingback.ping")
{
if ($source =~ /^http:\/\// and $target =~ /^http:\/\//)
{
#fetch the source URI to verify that the source does indeed link to the target.
my $request = HTTP::Request->new(GET => $source);
my $ua = LWP::UserAgent->new;
my $response = $ua->request($request);
if ($response->is_success)
{
#TODO: sanitize regex to grep site content
if (my ($text) = $response->content =~ m/(\S*.{0,17}$target.{0,17}\S*)/)
{
#check data to ensure that the target exists and is a valid entry.
my ($vid) = $target =~ /^$config->{'url_root'}\/video\/.*\/(\d+)\/.*/;
my $sth = $dbh->prepare("select id from videos where id = ? limit 1");
my $rowcount = $sth->execute($vid) or die $dbh->errstr;
$sth->finish() or die $dbh->errstr;
if ($rowcount)
{
#check that the pingback has not already been registered.
$sth = $dbh->prepare("select id from pingbacks where videoid = ? limit 1");
$rowcount = $sth->execute($vid) or die $dbh->errstr;
$sth->finish() or die $dbh->errstr;
if ($rowcount eq "0E0")
{
#record the pingback.
$dbh->do(qq{insert into pingbacks (source, videoid, text, timestamp) values (?, ?, ?, unix_timestamp())}, undef,
$source, $vid, $text) or die $dbh->errstr;
my $xml = ();
$xml->{'params'}->{'param'}->{'value'}->{'string'} = ["Pingback from $source to $target registered. Keep the web talking! :-)"];
print $session->header(
-type=>'application/xml',
-charset=>'UTF-8',
);
print XMLout(
$xml,
XMLDecl => 1,
KeyAttr => {},
RootName => 'methodResponse'
);
}
else
{
send_error(48, "The pingback has already been registered.");
}
}
else
{
send_error(33, "The specified target URI cannot be used as a target.");
}
}
else
{
send_error(17, "The source URI does not contain a link to the target URI, and so cannot be used as a source.");
}
}
else
{
send_error(16, "The source URI does not exist.");
}
}
else
{
send_error(-32602, "server error. invalid method parameters");
}
}
else
{
send_error(-32601, "server error. requested method not found");
}
}
else
{
send_error(-32700,"parse error. not well formed");
}
}
else
{
print $session->header;
print "XML-RPC server only accepts POST requests with http content-type defined.";
}
sub send_error
{
my ($faultCode, $faultString) = @_;
my $xml = ();
push @{$xml->{'fault'}->{'value'}->{'struct'}->{'member'}},
{
"name" => ["faultCode"],
"value" => [$faultCode]
};
push @{$xml->{'fault'}->{'value'}->{'struct'}->{'member'}},
{
"name" => ["faultString"],
"value" => [$faultString]
};
print $session->header(
-type=>'application/xml',
-charset=>'UTF-8',
);
print XMLout(
$xml,
XMLDecl => 1,
KeyAttr => {},
RootName => 'methodResponse'
);
}

65
trunk/video.pl
View file

@ -80,6 +80,71 @@ if($query->url_param('id'))
#add to database
$dbh->do(qq{insert into comments (userid, videoid, text, timestamp) values (?, ?, ?, unix_timestamp())}, undef,
$userinfo->{'id'}, $id, $query->param('comment')) or die $dbh->errstr;
#send pingbacks to every url in the comment
my (@matches) = $query->param('comment') =~ /(http:\/\/\S+)/gi;
foreach $match (@matches)
{
#ask for http header only - if pingbacks are implemented right, then we wont need the full site
my $request = HTTP::Request->new(HEAD => $match);
my $ua = LWP::UserAgent->new;
my $response = $ua->request($request);
if ($response->is_success)
{
my $pingbackurl = $response->header("x-pingback");
#if there was no x-pingback header, fetch the website and search for link element
if (!$pingbackurl)
{
$request = HTTP::Request->new(GET => $match);
$response = $ua->request($request);
if ($response->is_success)
{
($pingbackurl) = $response->content =~ /<link rel="pingback" href="([^"]+)" ?\/?>/;
}
}
#if requests were successful, send the pingbacks
if ($pingbackurl)
{
#TODO: expand xml entities &lt; &gt; &amp; &quot; in $pingbackurl
#contruct the xml-rpc request
my $xmlpost->{"methodName"} = ["pingback.ping"];
push @{$xmlpost->{'params'}->{'param'} },
{
"value" =>
{
"string" => [$config->{"url_root"}."/video/".urlencode($title)."/$id/"]
}
};
push @{$xmlpost->{'params'}->{'param'} },
{
"value" =>
{
"string" => [$match]
}
};
#post a xml-rpc request
$request = HTTP::Request->new(POST => $pingbackurl);
$request->header('Content-Type' => "application/xml");
$request->content(XMLout(
$xmlpost,
XMLDecl => 1,
KeyAttr => {},
RootName => 'methodCall'
));
$ua = LWP::UserAgent->new;
$response = $ua->request($request);
print $response->content;
#TODO: maybe do something on success?
}
}
}
}
}

3
trunk/xsl/xhtml/xhtml-head.xsl
View file

@ -40,6 +40,9 @@
</xsl:attribute>
</link>
<!-- TODO: get server root from config file-->
<link rel="pingback" href="http://localhost/pingback.pl" />
<xsl:choose>
<xsl:when test="//frontpage">