mirror of
https://github.com/WordPress/WordPress.git
synced 2024-11-05 18:32:23 +01:00
e6d4ece529
Props kpdesign. Fixes #25377. Built from https://develop.svn.wordpress.org/trunk@25564 git-svn-id: http://core.svn.wordpress.org/trunk@25482 1a063a9b-81f0-0310-95a4-ce76da25c4cd
128 lines
3.9 KiB
PHP
128 lines
3.9 KiB
PHP
<?php
|
|
/**
|
|
* Handle Trackbacks and Pingbacks Sent to WordPress
|
|
*
|
|
* @since 0.71
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Trackbacks
|
|
*/
|
|
|
|
if (empty($wp)) {
|
|
require_once('./wp-load.php');
|
|
wp( array( 'tb' => '1' ) );
|
|
}
|
|
|
|
/**
|
|
* Response to a trackback.
|
|
*
|
|
* Responds with an error or success XML message.
|
|
*
|
|
* @since 0.71
|
|
*
|
|
* @param int|bool $error Whether there was an error.
|
|
* Default '0'. Accepts '0' or '1'.
|
|
* @param string $error_message Error message if an error occurred.
|
|
*/
|
|
function trackback_response($error = 0, $error_message = '') {
|
|
header('Content-Type: text/xml; charset=' . get_option('blog_charset') );
|
|
if ($error) {
|
|
echo '<?xml version="1.0" encoding="utf-8"?'.">\n";
|
|
echo "<response>\n";
|
|
echo "<error>1</error>\n";
|
|
echo "<message>$error_message</message>\n";
|
|
echo "</response>";
|
|
die();
|
|
} else {
|
|
echo '<?xml version="1.0" encoding="utf-8"?'.">\n";
|
|
echo "<response>\n";
|
|
echo "<error>0</error>\n";
|
|
echo "</response>";
|
|
}
|
|
}
|
|
|
|
// Trackback is done by a POST.
|
|
$request_array = 'HTTP_POST_VARS';
|
|
|
|
if ( !isset($_GET['tb_id']) || !$_GET['tb_id'] ) {
|
|
$tb_id = explode('/', $_SERVER['REQUEST_URI']);
|
|
$tb_id = intval( $tb_id[ count($tb_id) - 1 ] );
|
|
}
|
|
|
|
$tb_url = isset($_POST['url']) ? $_POST['url'] : '';
|
|
$charset = isset($_POST['charset']) ? $_POST['charset'] : '';
|
|
|
|
// These three are stripslashed here so they can be properly escaped after mb_convert_encoding().
|
|
$title = isset($_POST['title']) ? wp_unslash($_POST['title']) : '';
|
|
$excerpt = isset($_POST['excerpt']) ? wp_unslash($_POST['excerpt']) : '';
|
|
$blog_name = isset($_POST['blog_name']) ? wp_unslash($_POST['blog_name']) : '';
|
|
|
|
if ($charset)
|
|
$charset = str_replace( array(',', ' '), '', strtoupper( trim($charset) ) );
|
|
else
|
|
$charset = 'ASCII, UTF-8, ISO-8859-1, JIS, EUC-JP, SJIS';
|
|
|
|
// No valid uses for UTF-7.
|
|
if ( false !== strpos($charset, 'UTF-7') )
|
|
die;
|
|
|
|
// For international trackbacks.
|
|
if ( function_exists('mb_convert_encoding') ) {
|
|
$title = mb_convert_encoding($title, get_option('blog_charset'), $charset);
|
|
$excerpt = mb_convert_encoding($excerpt, get_option('blog_charset'), $charset);
|
|
$blog_name = mb_convert_encoding($blog_name, get_option('blog_charset'), $charset);
|
|
}
|
|
|
|
// Now that mb_convert_encoding() has been given a swing, we need to escape these three.
|
|
$title = wp_slash($title);
|
|
$excerpt = wp_slash($excerpt);
|
|
$blog_name = wp_slash($blog_name);
|
|
|
|
if ( is_single() || is_page() )
|
|
$tb_id = $posts[0]->ID;
|
|
|
|
if ( !isset($tb_id) || !intval( $tb_id ) )
|
|
trackback_response(1, 'I really need an ID for this to work.');
|
|
|
|
if (empty($title) && empty($tb_url) && empty($blog_name)) {
|
|
// If it doesn't look like a trackback at all.
|
|
wp_redirect(get_permalink($tb_id));
|
|
exit;
|
|
}
|
|
|
|
if ( !empty($tb_url) && !empty($title) ) {
|
|
header('Content-Type: text/xml; charset=' . get_option('blog_charset') );
|
|
|
|
if ( !pings_open($tb_id) )
|
|
trackback_response(1, 'Sorry, trackbacks are closed for this item.');
|
|
|
|
$title = wp_html_excerpt( $title, 250, '…' );
|
|
$excerpt = wp_html_excerpt( $excerpt, 252, '…' );
|
|
|
|
$comment_post_ID = (int) $tb_id;
|
|
$comment_author = $blog_name;
|
|
$comment_author_email = '';
|
|
$comment_author_url = $tb_url;
|
|
$comment_content = "<strong>$title</strong>\n\n$excerpt";
|
|
$comment_type = 'trackback';
|
|
|
|
$dupe = $wpdb->get_results( $wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_author_url = %s", $comment_post_ID, $comment_author_url) );
|
|
if ( $dupe )
|
|
trackback_response(1, 'We already have a ping from that URL for this post.');
|
|
|
|
$commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type');
|
|
|
|
wp_new_comment($commentdata);
|
|
$trackback_id = $wpdb->insert_id;
|
|
|
|
/**
|
|
* Fires after a trackback is added to a post.
|
|
*
|
|
* @since 1.2.0
|
|
*
|
|
* @param int $trackback_id Trackback ID.
|
|
*/
|
|
do_action( 'trackback_post', $trackback_id );
|
|
trackback_response( 0 );
|
|
}
|