+++ /dev/null
-<?php
-// $Id: tb.inc.php,v 1.21 2005/06/15 15:57:11 henoheno Exp $
-/*
- * PukiWiki/TrackBack: TrackBack Ping receiver and viewer
- * (C) 2003-2005 PukiWiki Developers Team
- * (C) 2003 Katsumi Saito <katsumi@jo1upk.ymt.prug.or.jp>
- * License: GPL
- *
- * plugin_tb_action() action
- * plugin_tb_save($url, $tb_id) Save or update TrackBack Ping data
- * plugin_tb_output_response($rc, $msg) Show a response code of the ping via HTTP/XML (then exit)
- * plugin_tb_output_rsslist($tb_id) Show pings for the page via RSS
- * plugin_tb_output_htmllist($tb_id) Show pings for the page via XHTML
- */
-
-switch(LANG){
-case 'ja': define('PLUGIN_TB_LANGUAGE', 'ja-jp'); break;
-default : define('PLUGIN_TB_LANGUAGE', 'en-us'); break;
-}
-
-// ----
-
-define('PLUGIN_TB_ERROR', 1);
-define('PLUGIN_TB_NOERROR', 0);
-
-function plugin_tb_action()
-{
- global $trackback, $vars;
-
- if ($trackback && isset($vars['url'])) {
- // Receive and save a TrackBack Ping (both GET and POST)
- $url = $vars['url'];
- $tb_id = isset($vars['tb_id']) ? $vars['tb_id'] : '';
- list($error, $message) = plugin_tb_save($url, $tb_id);
-
- // Output the response
- plugin_tb_output_response($error, $message);
- exit;
-
- } else {
- if ($trackback && isset($vars['__mode']) && isset($vars['tb_id'])) {
- // Show TrackBacks received (and exit)
- switch ($vars['__mode']) {
- case 'rss' : plugin_tb_output_rsslist($vars['tb_id']); break;
- case 'view': plugin_tb_output_htmllist($vars['tb_id']); break;
- }
- exit;
-
- } else {
- // Show List of pages that TrackBacks reached
- $pages = get_existpages(TRACKBACK_DIR, '.txt');
- if (! empty($pages)) {
- return array('msg'=>'Trackback list',
- 'body'=>page_list($pages, 'read', FALSE));
- } else {
- return array('msg'=>'', 'body'=>'');
- }
- }
- }
-}
-
-// Save or update TrackBack Ping data
-function plugin_tb_save($url, $tb_id)
-{
- global $vars, $trackback;
- static $fields = array( /* UTIME, */ 'url', 'title', 'excerpt', 'blog_name');
-
- $die = '';
- if (! $trackback) $die .= 'TrackBack feature disabled. ';
- if ($url == '') $die .= 'URL parameter is not set. ';
- if ($tb_id == '') $die .= 'TrackBack Ping ID is not set. ';
- if ($die != '') return array(PLUGIN_TB_ERROR, $die);
-
- if (! file_exists(TRACKBACK_DIR)) return array(PLUGIN_TB_ERROR, 'No such directory: TRACKBACK_DIR');
- if (! is_writable(TRACKBACK_DIR)) return array(PLUGIN_TB_ERROR, 'Permission denied: TRACKBACK_DIR');
-
- $page = tb_id2page($tb_id);
- if ($page === FALSE) return array(PLUGIN_TB_ERROR, 'TrackBack ID is invalid.');
-
- // URL validation (maybe worse of processing time limit)
- $result = http_request($url, 'HEAD');
- if ($result['rc'] !== 200) return array(PLUGIN_TB_ERROR, 'URL is fictitious.');
-
- // Update TrackBack Ping data
- $filename = tb_get_filename($page);
- $data = tb_get($filename);
-
- $items = array(UTIME);
- foreach ($fields as $key) {
- $value = isset($vars[$key]) ? $vars[$key] : '';
- if (preg_match('/[,"' . "\n\r" . ']/', $value))
- $value = '"' . str_replace('"', '""', $value) . '"';
- $items[$key] = $value;
- }
- $data[rawurldecode($items['url'])] = $items;
-
- $fp = fopen($filename, 'w');
- set_file_buffer($fp, 0);
- flock($fp, LOCK_EX);
- rewind($fp);
- foreach ($data as $line) {
- $line = preg_replace('/[\r\n]/s', '', $line); // One line, one ping
- fwrite($fp, join(',', $line) . "\n");
- }
- flock($fp, LOCK_UN);
- fclose($fp);
-
- return array(PLUGIN_TB_NOERROR, '');
-}
-
-// Show a response code of the ping via HTTP/XML (then exit)
-function plugin_tb_output_response($rc, $msg = '')
-{
- if ($rc == PLUGIN_TB_NOERROR) {
- $rc = 0; // for PLUGIN_TB_NOERROR
- } else {
- $rc = 1; // for PLUGIN_TB_ERROR
- }
-
- pkwk_common_headers();
- header('Content-Type: text/xml');
- echo '<?xml version="1.0" encoding="iso-8859-1"?>';
- echo '<response>';
- echo ' <error>' . $rc . '</error>';
- if ($rc) echo '<message>' . $msg . '</message>';
- echo '</response>';
- exit;
-}
-
-// Show pings for the page via RSS
-function plugin_tb_output_rsslist($tb_id)
-{
- global $script, $vars, $entity_pattern;
-
- $page = tb_id2page($tb_id);
- if ($page === FALSE) return FALSE;
-
- $items = '';
- foreach (tb_get(tb_get_filename($page)) as $arr) {
- // _utime_, title, excerpt, _blog_name_
- array_shift($arr); // Cut utime
- list ($url, $title, $excerpt) = array_map(
- create_function('$a', 'return htmlspecialchars($a);'), $arr);
- $items .= <<<EOD
-
- <item>
- <title>$title</title>
- <link>$url</link>
- <description>$excerpt</description>
- </item>
-EOD;
- }
-
- $title = htmlspecialchars($page);
- $link = $script . '?' . rawurlencode($page);
- $vars['page'] = $page;
- $excerpt = strip_htmltag(convert_html(get_source($page)));
- $excerpt = preg_replace("/&$entity_pattern;/", '', $excerpt);
- $excerpt = mb_strimwidth(preg_replace("/[\r\n]/", ' ', $excerpt), 0, 255, '...');
- $lang = PLUGIN_TB_LANGUAGE;
-
- $rc = <<<EOD
-<?xml version="1.0" encoding="utf-8" ?>
-<response>
- <error>0</error>
- <rss version="0.91">
- <channel>
- <title>$title</title>
- <link>$link</link>
- <description>$excerpt</description>
- <language>$lang</language>$items
- </channel>
- </rss>
-</response>
-EOD;
-
- pkwk_common_headers();
- header('Content-Type: text/xml');
- echo mb_convert_encoding($rc, 'UTF-8', SOURCE_ENCODING);
- exit;
-}
-
-// Show pings for the page via XHTML
-function plugin_tb_output_htmllist($tb_id)
-{
- pkwk_common_headers();
- echo 'This function had been removed now. It will be created soon.<br />' . "\n";
- echo 'Sorry for your inconvenience.';
- exit;
-
- // ----
- // Skeleton Logic
-
- global $script;
- global $_tb_date;
-
- $page = tb_id2page($tb_id);
- if ($page === FALSE) return FALSE;
-
- $data = tb_get(tb_get_filename($page));
-
- // Sort: The first is the latest
- usort($data, create_function('$a,$b', 'return $b[0] - $a[0];'));
-
- $tb_body = '';
- foreach ($data as $x) {
- if (count($x) != 5) continue; // Ignore incorrect record
-
- list ($time, $url, $title, $excerpt, $blog_name) = $x;
- if ($title == '') $title = 'no title';
-
- $time = date($_tb_date, $time + LOCALZONE); // May 2, 2003 11:25 AM
- $tb_body .= <<<EOD
-EOD;
- }
-
- // Output start
- pkwk_common_headers();
-
- // BugTrack/466 Care for MSIE trouble
- // Logically correct, but MSIE will treat the data like 'file downloading'
- //header('Content-type: application/xhtml+xml; charset=UTF-8');
- header('Content-type: text/html; charset=UTF-8'); // Works well
-
- $meta_content_type = pkwk_output_dtd(PKWK_DTD_XHTML_1_0_TRANSITIONAL, 'UTF-8');
- $msg = <<<EOD
-<head>
- $meta_content_type
-</head>
-<body>
- $script?tb_id=$tb_id<br /><br />
- $tb_body
-</body>
-</html>
-EOD;
- echo mb_convert_encoding($msg, 'UTF-8', SOURCE_ENCODING);
- exit;
-}
-?>
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