plugin/tb.inc.php

   1 <?php
   2 // $Id: tb.inc.php,v 1.4 2003/08/20 10:55:36 arino Exp $
   3 /*
   4  * PukiWiki TrackBack ¥×¥í¥°¥é¥à
   5  * (C) 2003, Katsumi Saito <katsumi@jo1upk.ymt.prug.or.jp>
   6  * License: GPL
   7  *
   8  * plugin_tb_action()   action
   9  * tb_save()            TrackBack Ping ¥Ç¡¼¥¿ÊÝÂ¸(¹¹¿·)
  10  * tb_xml_msg($rc,$msg) XML ·ë²Ì½ÐÎÏ
  11  * tb_mode_rss($tb_id)  ?__mode=rss ½èÍý
  12  * tb_mode_view($tb_id) ?__mode=view ½èÍý
  13  */
  14
  15 function plugin_tb_action()
  16 {
  17         global $script,$vars,$post,$trackback;
  18
  19         // POST: TrackBack Ping ¤òÊÝÂ¸¤¹¤ë
  20         if (!empty($post['url']))
  21         {
  22                 tb_save();
  23         }
  24
  25         if ($trackback and !empty($vars['__mode']) and !empty($vars['tb_id']))
  26         {
  27                 switch ($vars['__mode'])
  28                 {
  29                         case 'rss':
  30                                 tb_mode_rss($vars['tb_id']);
  31                                 break;
  32                         case 'view':
  33                                 tb_mode_view($vars['tb_id']);
  34                                 break;
  35                 }
  36         }
  37         $pages = get_existpages(TRACKBACK_DIR,'.txt');
  38
  39         if (count($pages) == 0)
  40         {
  41                 return array('msg'=>'','body'=>'');
  42         }
  43
  44         return array(
  45                 'msg' => 'trackback list',
  46                 'body' => page_list($pages,'read',FALSE)
  47         );
  48 }
  49
  50 // TrackBack Ping ¥Ç¡¼¥¿ÊÝÂ¸(¹¹¿·)
  51 function tb_save()
  52 {
  53         global $script,$post,$vars,$trackback;
  54         static $fields = array(/* UTIME, */'url','title','excerpt','blog_name');
  55
  56         // µö²Ä¤·¤Æ¤¤¤Ê¤¤¤Î¤Ë¸Æ¤Ð¤ì¤¿¾ì¹ç¤ÎÂÐ±þ
  57         if (!$trackback)
  58         {
  59                 tb_xml_msg(1,'Feature inactive.');
  60         }
  61         // TrackBack Ping ¤Ë¤ª¤±¤ë URL ¥Ñ¥é¥á¡¼¥¿¤ÏÉ¬¿Ü¤Ç¤¢¤ë¡£
  62         if (empty($post['url']))
  63         {
  64                 tb_xml_msg(1,'It is an indispensable parameter. URL is not set up.');
  65         }
  66         // Query String ¤òÆÀ¤ë
  67         if (empty($vars['tb_id']))
  68         {
  69                 tb_xml_msg(1,'TrackBack Ping URL is inaccurate.');
  70         }
  71
  72         $url = $post['url'];
  73         $tb_id = $vars['tb_id'];
  74
  75         // ¥Ú¡¼¥¸Â¸ºß¥Á¥§¥Ã¥¯
  76         $page = tb_id2page($tb_id);
  77         if ($page === FALSE)
  78         {
  79                 tb_xml_msg(1,'TrackBack ID is invalid.');
  80         }
  81
  82         // URL ÂÅÅöÀ¥Á¥§¥Ã¥¯ (¤³¤ì¤òÆþ¤ì¤ë¤È½èÍý»þ´Ö¤ËÌäÂê¤¬¤Ç¤ë)
  83         $result = http_request($url,'HEAD');
  84         if ($result['rc'] !== 200)
  85         {
  86                 tb_xml_msg(1,'URL is fictitious.');
  87         }
  88
  89         // TRACKBACK_DIR ¤ÎÂ¸ºß¤È½ñ¤¹þ¤ß²ÄÇ½¤«¤Î³ÎÇ§
  90         if (!file_exists(TRACKBACK_DIR))
  91         {
  92                 tb_xml_msg(1,'No such directory');
  93         }
  94         if (!is_writable(TRACKBACK_DIR))
  95         {
  96                 tb_xml_msg(1,'Permission denied');
  97         }
  98
  99         // TrackBack Ping ¤Î¥Ç¡¼¥¿¤ò¹¹¿·
 100         $filename = tb_get_filename($page);
 101         $data = tb_get($filename);
 102
 103         $items = array(UTIME);
 104         foreach ($fields as $field)
 105         {
 106                 $value = array_key_exists($field,$post) ? $post[$field] : '';
 107                 if (ereg("[,\"\n\r]",$value))
 108                 {
 109                         $value = '"'.str_replace('"', '""', $value).'"';
 110                 }
 111                 $items[$field] = $value;
 112         }
 113         $data[$items['url']] = $items;
 114
 115         $fp = fopen($filename,'w');
 116         flock($fp,LOCK_EX);
 117         foreach ($data as $line)
 118         {
 119                 fwrite($fp,join(',',$line)."\n");
 120         }
 121         flock($fp,LOCK_UN);
 122         fclose($fp);
 123
 124         tb_xml_msg(0,'');
 125 }
 126
 127 // XML ·ë²Ì½ÐÎÏ
 128 function tb_xml_msg($rc,$msg)
 129 {
 130         header('Content-Type: text/xml');
 131         echo '<?xml version="1.0" encoding="iso-8859-1"?>';
 132         echo <<<EOD
 133
 134 <response>
 135  <error>$rc</error>
 136  <message>$msg</message>
 137 </response>
 138 EOD;
 139         die;
 140 }
 141
 142 // ?__mode=rss ½èÍý
 143 function tb_mode_rss($tb_id)
 144 {
 145         global $script,$vars,$entity_pattern;
 146
 147         $page = tb_id2page($tb_id);
 148         if ($page === FALSE)
 149         {
 150                 return FALSE;
 151         }
 152
 153         $items = '';
 154         foreach (tb_get(tb_get_filename($page)) as $arr)
 155         {
 156                 $utime = array_shift($arr);
 157                 list ($url,$title,$excerpt,$blog_name) = array_map(
 158                         create_function('$a','return htmlspecialchars($a);'),$arr);
 159                 $items .= <<<EOD
 160
 161    <item>
 162     <title>$title</title>
 163     <link>$url</link>
 164     <description>$excerpt</description>
 165    </item>
 166 EOD;
 167         }
 168
 169         $title = htmlspecialchars($page);
 170         $link = "$script?".rawurlencode($page);
 171         $vars['page'] = $page;
 172         $excerpt = strip_htmltag(convert_html(join('',get_source($page))));
 173         $excerpt = preg_replace("/&$entity_pattern;/",'',$excerpt);
 174         $excerpt = mb_strimwidth(preg_replace("/[\r\n]/",' ',$excerpt),0,255,'...');
 175
 176         $rc = <<<EOD
 177
 178 <response>
 179  <error>0</error>
 180  <rss version="0.91">
 181   <channel>
 182    <title>$title</title>
 183    <link>$link</link>
 184    <description>$excerpt</description>
 185    <language>ja-Jp</language>$items
 186   </channel>
 187  </rss>
 188 </response>
 189 EOD;
 190         $rc = mb_convert_encoding($rc,'UTF-8',SOURCE_ENCODING);
 191         header('Content-Type: text/xml');
 192         echo '<?xml version="1.0" encoding="utf-8" ?>';
 193         echo $rc;
 194         die;
 195 }
 196 // ?__mode=view ½èÍý
 197 function tb_mode_view($tb_id)
 198 {
 199         global $script,$page_title;
 200         global $_tb_title,$_tb_header,$_tb_entry,$_tb_refer,$_tb_date;
 201         global $_tb_header_Excerpt,$_tb_header_Weblog,$_tb_header_Tracked;
 202
 203         // TrackBack ID ¤«¤é¥Ú¡¼¥¸Ì¾¤ò¼èÆÀ
 204         $page = tb_id2page($tb_id);
 205         if ($page === FALSE)
 206         {
 207                 return FALSE;
 208         }
 209         $r_page = rawurlencode($page);
 210
 211         $tb_title = sprintf($_tb_title,$page);
 212         $tb_refer = sprintf($_tb_refer,"<a href=\"$script?$r_page\">'$page'</a>","<a href=\"$script\">$page_title</a>");
 213
 214
 215         $data = tb_get(tb_get_filename($page));
 216
 217         // ºÇ¿·ÈÇ¤«¤éÀ°Îó
 218         usort($data,create_function('$a,$b','return $b[0] - $a[0];'));
 219
 220         $tb_body = '';
 221         foreach ($data as $x)
 222         {
 223                 list ($time,$url,$title,$excerpt,$blog_name) = $x;
 224                 if ($title == '')
 225                 {
 226                         $title = 'no title';
 227                 }
 228                 $time = date($_tb_date, $time + LOCALZONE); // May 2, 2003 11:25 AM
 229                 $tb_body .= <<<EOD
 230 <div class="trackback-body">
 231  <span class="trackback-post"><a href="$url" target="new">$title</a><br />
 232   <strong>$_tb_header_Excerpt</strong> $excerpt<br />
 233   <strong>$_tb_header_Weblog</strong> $blog_name<br />
 234   <strong>$_tb_header_Tracked</strong> $time
 235  </span>
 236 </div>
 237 EOD;
 238         }
 239         $msg = <<<EOD
 240 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 241 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja">
 242 <head>
 243  <meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />
 244  <title>$tb_title</title>
 245  <link rel="stylesheet" href="skin/trackback.css" type="text/css" />
 246 </head>
 247 <body>
 248  <div id="banner-commentspop">$_tb_header</div>
 249  <div class="blog">
 250   <div class="trackback-url">
 251    $_tb_entry<br />
 252    $script?plugin=tb&amp;tb_id=$tb_id<br /><br />
 253    $tb_refer
 254   </div>
 255   $tb_body
 256  </div>
 257 </body>
 258 </html>
 259 EOD;
 260         echo '<?xml version="1.0" encoding="UTF-8"?>';
 261         echo mb_convert_encoding($msg,'UTF-8',SOURCE_ENCODING);
 262         die;
 263 }
 264 ?>