diff options
author | Yaco <franco@reevo.org> | 2020-06-04 11:01:00 -0300 |
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committer | Yaco <franco@reevo.org> | 2020-06-04 11:01:00 -0300 |
commit | fc7369835258467bf97eb64f184b93691f9a9fd5 (patch) | |
tree | daabd60089d2dd76d9f5fb416b005fbe159c799d /www/crm/wp-trackback.php |
first commit
Diffstat (limited to 'www/crm/wp-trackback.php')
-rw-r--r-- | www/crm/wp-trackback.php | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/www/crm/wp-trackback.php b/www/crm/wp-trackback.php new file mode 100644 index 00000000..6bc8495a --- /dev/null +++ b/www/crm/wp-trackback.php @@ -0,0 +1,152 @@ +<?php +/** + * Handle Trackbacks and Pingbacks Sent to WordPress + * + * @since 0.71 + * + * @package WordPress + * @subpackage Trackbacks + */ + +if ( empty( $wp ) ) { + require_once( dirname( __FILE__ ) . '/wp-load.php' ); + wp( array( 'tb' => '1' ) ); +} + +/** + * Response to a trackback. + * + * Responds with an error or success XML message. + * + * @since 0.71 + * + * @param mixed $error Whether there was an error. + * Default '0'. Accepts '0' or '1', true or false. + * @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 ) ) { + /** + * Fires before the trackback is added to a post. + * + * @since 4.7.0 + * + * @param int $tb_id Post ID related to the trackback. + * @param string $tb_url Trackback URL. + * @param string $charset Character Set. + * @param string $title Trackback Title. + * @param string $excerpt Trackback Excerpt. + * @param string $blog_name Blog Name. + */ + do_action( 'pre_trackback_post', $tb_id, $tb_url, $charset, $title, $excerpt, $blog_name ); + + 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' ); + + $result = wp_new_comment( $commentdata ); + + if ( is_wp_error( $result ) ) { + trackback_response( 1, $result->get_error_message() ); + } + + $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 ); +} |