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Validate pingback source URIs. Less verbose errors.

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git-svn-id: https://develop.svn.wordpress.org/trunk@23329 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Nacin
2013-01-22 22:30:08 +00:00
parent 8de46fae8b
commit 00d0bff81b
3 changed files with 103 additions and 13 deletions
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wp-includes/comment.php
+80
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@@ -1953,6 +1953,86 @@ function weblog_ping($server = '', $path = '') {
$client->query('weblogUpdates.ping', get_option('blogname'), $home);
}
/**
* Default filter attached to pingback_ping_source_uri to validate the pingback's Source URI
*
* @since 3.5.1
*
* @param string $source_uri
* @return string
*/
function pingback_ping_source_uri( $source_uri ) {
$uri = esc_url_raw( $source_uri, array( 'http', 'https' ) );
if ( ! $uri )
return '';
$parsed_url = @parse_url( $uri );
if ( ! $parsed_url )
return '';
if ( isset( $parsed_url['user'] ) || isset( $parsed_url['pass'] ) )
return '';
if ( false !== strpos( $parsed_url['host'], ':' ) )
return '';
$parsed_home = @parse_url( get_option( 'home' ) );
$same_host = strtolower( $parsed_home['host'] ) === strtolower( $parsed_url['host'] );
if ( ! $same_host ) {
$host = trim( $parsed_url['host'], '.' );
if ( preg_match( '#^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$#', $host ) ) {
$ip = $host;
} else {
$ip = gethostbyname( $host );
if ( $ip === $host ) // Error condition for gethostbyname()
$ip = false;
}
if ( $ip ) {
if ( '127.0.0.1' === $ip )
return '';
$parts = array_map( 'intval', explode( '.', $ip ) );
if ( 10 === $parts[0] )
return '';
if ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] )
return '';
if ( 192 === $parts[0] && 168 === $parts[1] )
return '';
}
}
if ( empty( $parsed_url['port'] ) )
return $uri;
$port = $parsed_url['port'];
if ( 80 === $port || 443 === $port || 8080 === $port )
return $uri;
if ( $parsed_home && $same_host && $parsed_home['port'] === $port )
return $uri;
return '';
}
/**
* Default filter attached to xmlrpc_pingback_error.
*
* Returns a generic pingback error code unless the error code is 48,
* which reports that the pingback is already registered.
*
* @since 3.5.1
* @link http://www.hixie.ch/specs/pingback/pingback#TOC3
*
* @param IXR_Error $ixr_error
* @return IXR_Error
*/
function xmlrpc_pingback_error( $ixr_error ) {
if ( $ixr_error->code === 48 )
return $ixr_error;
return new IXR_Error( 0, '' );
}
//
// Cache
//