22 * |
22 * |
23 * @param mixed $error Whether there was an error. |
23 * @param mixed $error Whether there was an error. |
24 * Default '0'. Accepts '0' or '1', true or false. |
24 * Default '0'. Accepts '0' or '1', true or false. |
25 * @param string $error_message Error message if an error occurred. |
25 * @param string $error_message Error message if an error occurred. |
26 */ |
26 */ |
27 function trackback_response($error = 0, $error_message = '') { |
27 function trackback_response( $error = 0, $error_message = '' ) { |
28 header('Content-Type: text/xml; charset=' . get_option('blog_charset') ); |
28 header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ) ); |
29 if ($error) { |
29 if ( $error ) { |
30 echo '<?xml version="1.0" encoding="utf-8"?'.">\n"; |
30 echo '<?xml version="1.0" encoding="utf-8"?' . ">\n"; |
31 echo "<response>\n"; |
31 echo "<response>\n"; |
32 echo "<error>1</error>\n"; |
32 echo "<error>1</error>\n"; |
33 echo "<message>$error_message</message>\n"; |
33 echo "<message>$error_message</message>\n"; |
34 echo "</response>"; |
34 echo '</response>'; |
35 die(); |
35 die(); |
36 } else { |
36 } else { |
37 echo '<?xml version="1.0" encoding="utf-8"?'.">\n"; |
37 echo '<?xml version="1.0" encoding="utf-8"?' . ">\n"; |
38 echo "<response>\n"; |
38 echo "<response>\n"; |
39 echo "<error>0</error>\n"; |
39 echo "<error>0</error>\n"; |
40 echo "</response>"; |
40 echo '</response>'; |
41 } |
41 } |
42 } |
42 } |
43 |
43 |
44 // Trackback is done by a POST. |
44 // Trackback is done by a POST. |
45 $request_array = 'HTTP_POST_VARS'; |
45 $request_array = 'HTTP_POST_VARS'; |
46 |
46 |
47 if ( !isset($_GET['tb_id']) || !$_GET['tb_id'] ) { |
47 if ( ! isset( $_GET['tb_id'] ) || ! $_GET['tb_id'] ) { |
48 $tb_id = explode('/', $_SERVER['REQUEST_URI']); |
48 $tb_id = explode( '/', $_SERVER['REQUEST_URI'] ); |
49 $tb_id = intval( $tb_id[ count($tb_id) - 1 ] ); |
49 $tb_id = intval( $tb_id[ count( $tb_id ) - 1 ] ); |
50 } |
50 } |
51 |
51 |
52 $tb_url = isset($_POST['url']) ? $_POST['url'] : ''; |
52 $tb_url = isset( $_POST['url'] ) ? $_POST['url'] : ''; |
53 $charset = isset($_POST['charset']) ? $_POST['charset'] : ''; |
53 $charset = isset( $_POST['charset'] ) ? $_POST['charset'] : ''; |
54 |
54 |
55 // These three are stripslashed here so they can be properly escaped after mb_convert_encoding(). |
55 // These three are stripslashed here so they can be properly escaped after mb_convert_encoding(). |
56 $title = isset($_POST['title']) ? wp_unslash($_POST['title']) : ''; |
56 $title = isset( $_POST['title'] ) ? wp_unslash( $_POST['title'] ) : ''; |
57 $excerpt = isset($_POST['excerpt']) ? wp_unslash($_POST['excerpt']) : ''; |
57 $excerpt = isset( $_POST['excerpt'] ) ? wp_unslash( $_POST['excerpt'] ) : ''; |
58 $blog_name = isset($_POST['blog_name']) ? wp_unslash($_POST['blog_name']) : ''; |
58 $blog_name = isset( $_POST['blog_name'] ) ? wp_unslash( $_POST['blog_name'] ) : ''; |
59 |
59 |
60 if ($charset) |
60 if ( $charset ) { |
61 $charset = str_replace( array(',', ' '), '', strtoupper( trim($charset) ) ); |
61 $charset = str_replace( array( ',', ' ' ), '', strtoupper( trim( $charset ) ) ); |
62 else |
62 } else { |
63 $charset = 'ASCII, UTF-8, ISO-8859-1, JIS, EUC-JP, SJIS'; |
63 $charset = 'ASCII, UTF-8, ISO-8859-1, JIS, EUC-JP, SJIS'; |
|
64 } |
64 |
65 |
65 // No valid uses for UTF-7. |
66 // No valid uses for UTF-7. |
66 if ( false !== strpos($charset, 'UTF-7') ) |
67 if ( false !== strpos( $charset, 'UTF-7' ) ) { |
67 die; |
68 die; |
|
69 } |
68 |
70 |
69 // For international trackbacks. |
71 // For international trackbacks. |
70 if ( function_exists('mb_convert_encoding') ) { |
72 if ( function_exists( 'mb_convert_encoding' ) ) { |
71 $title = mb_convert_encoding($title, get_option('blog_charset'), $charset); |
73 $title = mb_convert_encoding( $title, get_option( 'blog_charset' ), $charset ); |
72 $excerpt = mb_convert_encoding($excerpt, get_option('blog_charset'), $charset); |
74 $excerpt = mb_convert_encoding( $excerpt, get_option( 'blog_charset' ), $charset ); |
73 $blog_name = mb_convert_encoding($blog_name, get_option('blog_charset'), $charset); |
75 $blog_name = mb_convert_encoding( $blog_name, get_option( 'blog_charset' ), $charset ); |
74 } |
76 } |
75 |
77 |
76 // Now that mb_convert_encoding() has been given a swing, we need to escape these three. |
78 // Now that mb_convert_encoding() has been given a swing, we need to escape these three. |
77 $title = wp_slash($title); |
79 $title = wp_slash( $title ); |
78 $excerpt = wp_slash($excerpt); |
80 $excerpt = wp_slash( $excerpt ); |
79 $blog_name = wp_slash($blog_name); |
81 $blog_name = wp_slash( $blog_name ); |
80 |
82 |
81 if ( is_single() || is_page() ) |
83 if ( is_single() || is_page() ) { |
82 $tb_id = $posts[0]->ID; |
84 $tb_id = $posts[0]->ID; |
|
85 } |
83 |
86 |
84 if ( !isset($tb_id) || !intval( $tb_id ) ) |
87 if ( ! isset( $tb_id ) || ! intval( $tb_id ) ) { |
85 trackback_response( 1, __( 'I really need an ID for this to work.' ) ); |
88 trackback_response( 1, __( 'I really need an ID for this to work.' ) ); |
|
89 } |
86 |
90 |
87 if (empty($title) && empty($tb_url) && empty($blog_name)) { |
91 if ( empty( $title ) && empty( $tb_url ) && empty( $blog_name ) ) { |
88 // If it doesn't look like a trackback at all. |
92 // If it doesn't look like a trackback at all. |
89 wp_redirect(get_permalink($tb_id)); |
93 wp_redirect( get_permalink( $tb_id ) ); |
90 exit; |
94 exit; |
91 } |
95 } |
92 |
96 |
93 if ( !empty($tb_url) && !empty($title) ) { |
97 if ( ! empty( $tb_url ) && ! empty( $title ) ) { |
94 /** |
98 /** |
95 * Fires before the trackback is added to a post. |
99 * Fires before the trackback is added to a post. |
96 * |
100 * |
97 * @since 4.7.0 |
101 * @since 4.7.0 |
98 * |
102 * |
99 * @param int $tb_id Post ID related to the trackback. |
103 * @param int $tb_id Post ID related to the trackback. |
100 * @param string $tb_url Trackback URL. |
104 * @param string $tb_url Trackback URL. |
101 * @param string $charset Character Set. |
105 * @param string $charset Character Set. |
102 * @param string $title Trackback Title. |
106 * @param string $title Trackback Title. |
103 * @param string $excerpt Trackback Excerpt. |
107 * @param string $excerpt Trackback Excerpt. |
104 * @param string $blog_name Blog Name. |
108 * @param string $blog_name Blog Name. |
105 */ |
109 */ |
106 do_action( 'pre_trackback_post', $tb_id, $tb_url, $charset, $title, $excerpt, $blog_name ); |
110 do_action( 'pre_trackback_post', $tb_id, $tb_url, $charset, $title, $excerpt, $blog_name ); |
107 |
111 |
108 header('Content-Type: text/xml; charset=' . get_option('blog_charset') ); |
112 header( 'Content-Type: text/xml; charset=' . get_option( 'blog_charset' ) ); |
109 |
113 |
110 if ( !pings_open($tb_id) ) |
114 if ( ! pings_open( $tb_id ) ) { |
111 trackback_response( 1, __( 'Sorry, trackbacks are closed for this item.' ) ); |
115 trackback_response( 1, __( 'Sorry, trackbacks are closed for this item.' ) ); |
|
116 } |
112 |
117 |
113 $title = wp_html_excerpt( $title, 250, '…' ); |
118 $title = wp_html_excerpt( $title, 250, '…' ); |
114 $excerpt = wp_html_excerpt( $excerpt, 252, '…' ); |
119 $excerpt = wp_html_excerpt( $excerpt, 252, '…' ); |
115 |
120 |
116 $comment_post_ID = (int) $tb_id; |
121 $comment_post_ID = (int) $tb_id; |
117 $comment_author = $blog_name; |
122 $comment_author = $blog_name; |
118 $comment_author_email = ''; |
123 $comment_author_email = ''; |
119 $comment_author_url = $tb_url; |
124 $comment_author_url = $tb_url; |
120 $comment_content = "<strong>$title</strong>\n\n$excerpt"; |
125 $comment_content = "<strong>$title</strong>\n\n$excerpt"; |
121 $comment_type = 'trackback'; |
126 $comment_type = 'trackback'; |
122 |
127 |
123 $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) ); |
128 $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 ) ); |
124 if ( $dupe ) |
129 if ( $dupe ) { |
125 trackback_response( 1, __( 'We already have a ping from that URL for this post.' ) ); |
130 trackback_response( 1, __( 'We already have a ping from that URL for this post.' ) ); |
|
131 } |
126 |
132 |
127 $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type'); |
133 $commentdata = compact( 'comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type' ); |
128 |
134 |
129 $result = wp_new_comment( $commentdata ); |
135 $result = wp_new_comment( $commentdata ); |
130 |
136 |
131 if ( is_wp_error( $result ) ) { |
137 if ( is_wp_error( $result ) ) { |
132 trackback_response( 1, $result->get_error_message() ); |
138 trackback_response( 1, $result->get_error_message() ); |