2 // $Id: tb.inc.php,v 1.17 2005/01/23 03:15:40 henoheno Exp $
4 * PukiWiki/TrackBack: TrackBack Ping receiver and viewer
5 * (C) 2003-2004 PukiWiki Developer Team
6 * (C) 2003, Katsumi Saito <katsumi@jo1upk.ymt.prug.or.jp>
9 * plugin_tb_action() action
10 * plugin_tb_save($url, $tb_id) Save or update TrackBack Ping data
11 * plugin_tb_return($rc, $msg) Return TrackBack ping via HTTP/XML
12 * plugin_tb_mode_rss($tb_id) ?__mode=rss
13 * plugin_tb_mode_view($tb_id) ?__mode=view
17 case 'ja': define('PLUGIN_TB_LANGUAGE', 'ja-Jp'); break;
18 default : define('PLUGIN_TB_LANGUAGE', 'en-us'); break;
21 function plugin_tb_action()
23 global $vars, $trackback;
25 if (isset($vars['url'])) {
26 // Receive and save a TrackBack Ping (both GET and POST)
28 $tb_id = isset($vars['tb_id']) ? $vars['tb_id'] : '';
29 plugin_tb_save($url, $tb_id); // Send a response (and exit)
32 if ($trackback && isset($vars['__mode']) && isset($vars['tb_id'])) {
33 // Show TrackBacks received (and exit)
34 switch ($vars['__mode']) {
35 case 'rss' : plugin_tb_mode_rss($vars['tb_id']); break;
36 case 'view': plugin_tb_mode_view($vars['tb_id']); break;
40 // Show List of pages that TrackBacks reached
41 $pages = get_existpages(TRACKBACK_DIR, '.txt');
42 if (! empty($pages)) {
43 return array('msg'=>'trackback list',
44 'body'=>page_list($pages, 'read', FALSE));
46 return array('msg'=>'', 'body'=>'');
51 // Save or update TrackBack Ping data
52 function plugin_tb_save($url, $tb_id)
54 global $vars, $trackback;
55 static $fields = array( /* UTIME, */ 'url', 'title', 'excerpt', 'blog_name');
58 if (! $trackback) $die .= 'TrackBack feature disabled. ';
59 if ($url == '') $die .= 'URL parameter is not set. ';
60 if ($tb_id == '') $die .= 'TrackBack Ping ID is not set. ';
61 if ($die != '') plugin_tb_return(1, $die);
63 if (! file_exists(TRACKBACK_DIR)) plugin_tb_return(1, 'No such directory: TRACKBACK_DIR');
64 if (! is_writable(TRACKBACK_DIR)) plugin_tb_return(1, 'Permission denied: TRACKBACK_DIR');
66 $page = tb_id2page($tb_id);
67 if ($page === FALSE) plugin_tb_return(1, 'TrackBack ID is invalid.');
69 // URL validation (maybe worse of processing time limit)
70 $result = http_request($url, 'HEAD');
71 if ($result['rc'] !== 200) plugin_tb_return(1, 'URL is fictitious.');
73 // Update TrackBack Ping data
74 $filename = tb_get_filename($page);
75 $data = tb_get($filename);
77 $items = array(UTIME);
78 foreach ($fields as $key) {
79 $value = isset($vars[$key]) ? $vars[$key] : '';
80 if (preg_match('/[,"' . "\n\r" . ']/', $value))
81 $value = '"' . str_replace('"', '""', $value) . '"';
82 $items[$key] = $value;
84 $data[rawurldecode($items['url'])] = $items;
86 $fp = fopen($filename, 'w');
87 set_file_buffer($fp, 0);
90 foreach ($data as $line) {
91 $line = preg_replace('/[\r\n]/s', '', $line); // One line, one ping
92 fwrite($fp, join(',', $line) . "\n");
97 plugin_tb_return(0); // Return OK
100 // Return TrackBack ping via HTTP/XML
101 function plugin_tb_return($rc, $msg = '')
103 pkwk_common_headers();
104 header('Content-Type: text/xml');
105 echo '<?xml version="1.0" encoding="iso-8859-1"?>';
107 echo ' <error>' . $rc . '</error>';
108 if ($rc !== 0) echo '<message>' . $msg . '</message>';
114 function plugin_tb_mode_rss($tb_id)
116 global $script, $vars, $entity_pattern;
118 $page = tb_id2page($tb_id);
119 if ($page === FALSE) return FALSE;
122 foreach (tb_get(tb_get_filename($page)) as $arr) {
123 // _utime_, title, excerpt, _blog_name_
124 array_shift($arr); // Cut utime
125 list ($url, $title, $excerpt) = array_map(
126 create_function('$a', 'return htmlspecialchars($a);'), $arr);
130 <title>$title</title>
132 <description>$excerpt</description>
137 $title = htmlspecialchars($page);
138 $link = $script . '?' . rawurlencode($page);
139 $vars['page'] = $page;
140 $excerpt = strip_htmltag(convert_html(get_source($page)));
141 $excerpt = preg_replace("/&$entity_pattern;/", '', $excerpt);
142 $excerpt = mb_strimwidth(preg_replace("/[\r\n]/", ' ', $excerpt), 0, 255, '...');
143 $lang = PLUGIN_TB_LANGUAGE;
146 <?xml version="1.0" encoding="utf-8" ?>
151 <title>$title</title>
153 <description>$excerpt</description>
154 <language>$lang</language>$items
160 pkwk_common_headers();
161 header('Content-Type: text/xml');
162 echo mb_convert_encoding($rc, 'UTF-8', SOURCE_ENCODING);
167 function plugin_tb_mode_view($tb_id)
169 global $script, $page_title;
170 global $_tb_title, $_tb_header, $_tb_entry, $_tb_refer, $_tb_date;
171 global $_tb_header_Excerpt, $_tb_header_Weblog, $_tb_header_Tracked;
173 $page = tb_id2page($tb_id);
174 if ($page === FALSE) return FALSE;
176 $r_page = rawurlencode($page);
178 $tb_title = sprintf($_tb_title, $page);
179 $tb_refer = sprintf($_tb_refer, '<a href="' . $script . '?' . $r_page .
180 '">\'' . $page . '\'</a>', '<a href="' . $script . '">' . $page_title . '</a>');
182 $data = tb_get(tb_get_filename($page));
184 // Sort: The first is the latest
185 usort($data, create_function('$a,$b', 'return $b[0] - $a[0];'));
188 foreach ($data as $x) {
189 if (count($x) != 5) continue; // Ignore incorrect record
191 list ($time, $url, $title, $excerpt, $blog_name) = $x;
192 if ($title == '') $title = 'no title';
194 $time = date($_tb_date, $time + LOCALZONE); // May 2, 2003 11:25 AM
196 <div class="trackback-body">
197 <span class="trackback-post"><a href="$url" target="new" rel="nofollow">$title</a><br />
198 <strong>$_tb_header_Excerpt</strong> $excerpt<br />
199 <strong>$_tb_header_Weblog</strong> $blog_name<br />
200 <strong>$_tb_header_Tracked</strong> $time
206 <?xml version="1.0" encoding="UTF-8"?>
207 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
208 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja">
210 <meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />
211 <title>$tb_title</title>
212 <link rel="stylesheet" href="skin/trackback.css" type="text/css" />
215 <div id="banner-commentspop">$_tb_header</div>
217 <div class="trackback-url">
219 $script?tb_id=$tb_id<br /><br />
228 pkwk_common_headers();
230 // BugTrack/466 Care for MSIE trouble
231 // Logically correct, but MSIE will treat the data like 'file downloading'
232 //header('Content-type: application/xhtml+xml; charset=UTF-8');
233 header('Content-type: text/html; charset=UTF-8'); // Works well
235 echo mb_convert_encoding($msg, 'UTF-8', SOURCE_ENCODING);