trunk/NP_TrimImage/NP_TrimImage.php

   1 <?php
   2 // vim: tabstop=2:shiftwidth=2
   3
   4 /**
   5   * NP_TrimImage ($Revision: 1.11 $)
   6   * by nakahara21 ( http://nakahara21.com/ )
   7   * by hsur ( http://blog.cles.jp/np_cles/ )
   8   * $Id: NP_TrimImage.php,v 1.11 2008-05-02 17:23:20 hsur Exp $
   9   *
  10   * Based on NP_TrimImage 1.0 by nakahara21
  11   * http://nakahara21.com/?itemid=512
  12 */
  13
  14 /*
  15   * Copyright (C) 2004-2006 nakahara21 All rights reserved.
  16   * Copyright (C) 2006-2008 cles All rights reserved.
  17   *
  18   * This program is free software; you can redistribute it and/or
  19   * modify it under the terms of the GNU General Public License
  20   * as published by the Free Software Foundation; either version 2
  21   * of the License, or (at your option) any later version.
  22   *
  23   * This program is distributed in the hope that it will be useful,
  24   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26   * GNU General Public License for more details.
  27   *
  28   * You should have received a copy of the GNU General Public License
  29   * along with this program; if not, write to the Free Software
  30   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  31   *
  32   * In addition, as a special exception, mamio and cles gives
  33   * permission to link the code of this program with those files in the PEAR
  34   * library that are licensed under the PHP License (or with modified versions
  35   * of those files that use the same license as those files), and distribute
  36   * linked combinations including the two. You must obey the GNU General Public
  37   * License in all respects for all of the code used other than those files in
  38   * the PEAR library that are licensed under the PHP License. If you modify
  39   * this file, you may extend this exception to your version of the file,
  40   * but you are not obligated to do so. If you do not wish to do so, delete
  41   * this exception statement from your version.
  42 */
  43
  44 //history
  45 //      0.2:    $archive, $blogid and $catid suppot ($exmode=all ready)
  46 //                      echos 'no images'
  47 //      0.3:    add strtolower
  48 //                      Initialize $this->exquery
  49 //      0.5:    use createGlobalItemLink
  50 //                      sql_table support :-P
  51 //      0.6:    parameter supports blogid and catid
  52 //      0.7:    supports templatevar
  53 //                      supports popup()
  54 //      0.8:    supports gif
  55 //      0.9:    doTemplateVar calls DB data for other PreItem Plugin
  56 //      0.9:    change '&' to '&amp;'
  57 //      1.1:    NP_Paint support.
  58 //              Security Fix.
  59 //      2.0:    use phpThumb() (http://phpthumb.sourceforge.net)
  60 //      2.1:    update regex
  61 //              add alt/title attribute
  62 //              bug fix
  63 //  2.2:        support <img /> tag.
  64 //                              doTemplateVar() bug fix.
  65 //                              Add ENT_QUOTES to htmlspecialchars()
  66 //                              Add ExtractImageMode
  67 //  2.2.1:      update phpThumb() 1.7.7 .
  68 //              bug fix
  69 //  2.2.2:      update enableLeftTop.patch
  70 //  2.3.0:  add itemcat mode
  71
  72 define('NP_TRIMIMAGE_FORCE_PASSTHRU', true); //passthru(standard)
  73 //define('NP_TRIMIMAGE_FORCE_PASSTHRU', false); //redirect(advanced)
  74
  75 define('NP_TRIMIMAGE_CACHE_MAXAGE', 86400 * 30); // 30days
  76 define('NP_TRIMIMAGE_PREFER_IMAGEMAGICK', false);
  77
  78 require_once(dirname(__FILE__).'/sharedlibs/sharedlibs.php');
  79 require_once('phpthumb/phpthumb.functions.php');
  80 require_once('phpthumb/phpthumb.class.php');
  81
  82 class NP_TrimImage extends NucleusPlugin {
  83         function getName() {
  84                 return 'TrimImage';
  85         }
  86
  87         function getAuthor() {
  88                 return 'nakahara21 + hsur';
  89         }
  90
  91         function getURL() {
  92                 return 'http://blog.cles.jp/np_cles/category/31/subcatid/15';
  93         }
  94
  95         function getVersion() {
  96                 return '2.3.0';
  97         }
  98
  99         function supportsFeature($what) {
 100                 switch ($what) {
 101                         case 'SqlTablePrefix' :
 102                                 return 1;
 103                         default :
 104                                 return 0;
 105                 }
 106         }
 107
 108         function getDescription() {
 109                 return 'Trim image in items, and embed these images.';
 110         }
 111
 112         function getEventList() {
 113                 return array ('PostAddItem', 'PostUpdateItem', 'PostDeleteItem',);
 114         }
 115
 116         function event_PostAddItem(& $data) {
 117                 $this->_clearCache();
 118         }
 119         function event_PostUpdateItem(& $data) {
 120                 $this->_clearCache();
 121         }
 122         function event_PostDeleteItem(& $data) {
 123                 $this->_clearCache();
 124         }
 125         function _clearCache() {
 126                 /*
 127                 $phpThumb = new phpThumb();
 128                 foreach ($this->phpThumbParams as $paramKey => $paramValue) {
 129                         $phpThumb->setParameter($paramKey, $paramValue);
 130                 }
 131                 $phpThumb->setParameter('config_cache_maxage', 1);
 132                 $phpThumb->CleanUpCacheDirectory();
 133                 var_dump($phpThumb);
 134                 */
 135         }
 136
 137         function init() {
 138                 global $DIR_MEDIA;
 139                 $this->fileex = array ('.gif', '.jpg', '.png');
 140                 $cacheDir = $DIR_MEDIA.'phpthumb/';
 141                 $cacheDir = (is_dir($cacheDir) && @ is_writable($cacheDir)) ? $cacheDir : null;
 142
 143                 $this->phpThumbParams = array(
 144                         'config_document_root' => $DIR_MEDIA,
 145                         'config_cache_directory' => $cacheDir,
 146                         'config_cache_disable_warning' => true,
 147                         'config_cache_directory_depth' => 0,
 148                         'config_cache_maxage' => NP_TRIMIMAGE_CACHE_MAXAGE,
 149                         'config_cache_maxsize' => 10 * 1024 * 1024, // 10MB
 150                         'config_cache_maxfiles' => 1000,
 151                         'config_cache_source_filemtime_ignore_local' => true,
 152                         'config_cache_cache_default_only_suffix' => '',
 153                         'config_cache_prefix' => 'phpThumb_cache',
 154                         'config_cache_force_passthru' => NP_TRIMIMAGE_FORCE_PASSTHRU,
 155                         'config_max_source_pixels' => 3871488, //4Mpx
 156                         'config_output_format' => 'jpg',
 157                         'config_disable_debug' => true,
 158                         'config_prefer_imagemagick' => NP_TRIMIMAGE_PREFER_IMAGEMAGICK,
 159                 );
 160         }
 161
 162         function getCategoryIDFromItemID($itemid) {
 163                 return quickQuery('SELECT icat as result FROM ' . sql_table('item') . ' WHERE inumber=' . intval($itemid) );
 164         }
 165
 166         function doSkinVar($skinType, $amount = 10, $wsize = 80, $hsize = 80, $point = 0, $random = 0, $exmode = '', $titlemode = '', $includeImg = 'true') {
 167                 global $CONF, $manager, $blog;
 168                 if ($blog) {
 169                         $b = & $blog;
 170                 } else {
 171                         $b = & $manager->getBlog($CONF['DefaultBlog']);
 172                 }
 173
 174                 if (!is_numeric($amount))
 175                         $amount = 10;
 176                 if (!is_numeric($hsize))
 177                         $hsize = 80;
 178                 if (!is_numeric($wsize))
 179                         $wsize = 80;
 180                 $point = ($point == 'lefttop') ? true : false;
 181                 $includeImg = ( $includeImg == 'true' ) ? true : false;
 182
 183                 $this->exquery = '';
 184
 185                 switch ($skinType) {
 186                         case 'archive' :
 187                                 global $archive;
 188                                 $year = $month = $day = '';
 189                                 sscanf($archive, '%d-%d-%d', $year, $month, $day);
 190                                 if (empty ($day)) {
 191                                         $timestamp_start = mktime(0, 0, 0, $month, 1, $year);
 192                                         $timestamp_end = mktime(0, 0, 0, $month +1, 1, $year); // also works when $month==12
 193                                 } else {
 194                                         $timestamp_start = mktime(0, 0, 0, $month, $day, $year);
 195                                         $timestamp_end = mktime(0, 0, 0, $month, $day +1, $year);
 196                                 }
 197                                 $this->exquery .= ' and itime >= ' . mysqldate($timestamp_start)
 198                                                                         .' and itime < ' . mysqldate($timestamp_end);
 199
 200                                 //break;
 201                         default :
 202                                 if ($exmode == '' || $exmode == 'itemcat') {
 203                                         global $catid, $itemid;
 204                                         if ($catid)
 205                                                 $this->exquery .= ' and icat = '.intval($catid);
 206                                         elseif( $exmode == 'itemcat' && $itemid )
 207                                                 $this->exquery .= ' and icat = '.intval( $this->getCategoryIDFromItemID($itemid) );
 208                                         else
 209                                                 $this->exquery .= ' and iblog = '.intval($b->getID());
 210                                 } elseif ($exmode == 'all') {
 211                                         // nothing
 212                                 } else {
 213                                         $spbid = $spcid = array ();
 214                                         $spid_array = explode('/', $exmode);
 215                                         foreach ($spid_array as $spid) {
 216                                                 $type = substr($spid, 0, 1);
 217                                                 $type_id = intval(substr($spid, 1));
 218                                                 if( (!$type) || (!$type_id) ) continue;
 219
 220                                                 switch($type){
 221                                                         case 'b':
 222                                                                 $spbid[] = $type_id;
 223                                                                 break;
 224                                                         case 'c':
 225                                                                 $spcid[] = $type_id;
 226                                                                 break;
 227                                                 }
 228                                         }
 229                                         if ($spbid){
 230                                                 $this->exquery .= ' and iblog IN ('.implode(',', $spbid).') ';
 231                                         }
 232                                         if ($spcid) {
 233                                                 $this->exquery .= ' and icat IN ('.implode(',', $spcid).') ';
 234                                         }
 235                                 }
 236                 }
 237
 238                 $filelist = array ();
 239                 $this->imglists = array ();
 240                 $this->imgfilename = array ();
 241                 $random = $random ? true : false;
 242                 if (!($filelist = $this->listup($amount, $random, $includeImg))) {
 243                         //echo 'No images here.';
 244                         return;
 245                 }
 246
 247                 $amount = min($amount, count($filelist));
 248                 echo '<div>';
 249                 for ($i = 0; $i < $amount; $i ++) {
 250                         $itemlink = $this->createGlobalItemLink($filelist[$i][1], ''); // why not createItemLink ?
 251                         //                      $itemlink = $this->createItemLink($filelist[$i][1]);
 252                         echo '<a href="'.$itemlink.'">';
 253
 254                         $src = '';
 255                         if (!$this->phpThumbParams['config_cache_force_passthru']) {
 256                                 $src = $this->createImage($filelist[$i][0], $wsize, $hsize, $point, true);
 257                         }
 258                         if (!$src) {
 259                                 $src = htmlspecialchars($CONF['ActionURL'], ENT_QUOTES)
 260                                                 .'?action=plugin&amp;name=TrimImage&amp;type=draw'.'&amp;p='
 261                                                 .$filelist[$i][0].'&amp;wsize='.$wsize.'&amp;hsize='.$hsize
 262                                                 . ($point ? '&amp;pnt=lefttop' : '');
 263                         }
 264
 265                         if($titlemode == 'item')
 266                                 $title = ($filelist[$i][4]) ? $filelist[$i][4] : $filelist[$i][2];
 267                         else
 268                                 $title = ($filelist[$i][2]) ? $filelist[$i][2] : $filelist[$i][4];
 269
 270                         echo '<img src="'.$src.'" '
 271                                 . ( $wsize ? 'width="'.$wsize.'"'  : '' )
 272                                 . ( $hsize ? 'height="'.$hsize.'"' : '' )
 273                                 . 'alt="'.htmlspecialchars($title, ENT_QUOTES)
 274                                 . '" title="'.htmlspecialchars($title, ENT_QUOTES).'"/>';
 275                         echo "</a>\n";
 276                 }
 277                 echo "</div>\n";
 278         }
 279
 280         function listup($amount = 10, $random = false, $includeImg = true) {
 281                 global $CONF, $manager, $blog;
 282                 if ($blog) {
 283                         $b = & $blog;
 284                 } else {
 285                         $b = & $manager->getBlog($CONF['DefaultBlog']);
 286                 }
 287
 288                 $query = 'SELECT inumber as itemid, ititle as title, ibody as body, iauthor, itime, imore as more,';
 289                 $query .= ' icat as catid, iclosed as closed';
 290                 $query .= ' FROM '.sql_table('item');
 291                 $query .= ' WHERE idraft = 0';
 292                 $query .= ' and itime <= '.mysqldate($b->getCorrectTime()); // don't show future items!
 293                 $query .= $this->exquery;
 294                 $query .= ' ORDER BY itime DESC LIMIT '.intval($amount * 10);
 295
 296                 $res = sql_query($query);
 297
 298                 if (!mysql_num_rows($res))
 299                         return FALSE;
 300
 301                 while ($it = mysql_fetch_object($res)) {
 302                         $txt = $it->body.$it->more;
 303                         if (preg_match_all("/<%(image|popup|paint)\((.*?)\)%>/s", $txt, $imgpnt))
 304                                 @ array_walk($imgpnt[2], array (& $this, "exarray"), array ($it->itemid, $it->iauthor, $it->title));
 305
 306                         if ($includeImg && preg_match_all("/<img (.*?)>/s", $txt, $imgtmp)){
 307                                 foreach($imgtmp[1] as $tmp){
 308                                         $this->exarray($tmp, null, array($it->itemid, $it->iauthor, $it->title), true);
 309                                 }
 310                         }
 311
 312                         if (count($this->imglists) >= $amount)
 313                                 break;
 314                 }
 315                 mysql_free_result($res);
 316
 317                 if ($random)
 318                         shuffle($this->imglists);
 319                 $this->imglists = array_slice($this->imglists, 0, $amount);
 320                 return $this->imglists;
 321         }
 322
 323         function exarray($imginfo, $key, $params, $isImg = false) {
 324                 global $CONF;
 325                 if ($isImg){
 326                         if( preg_match_all('/(src|width|height|alt|title)=\"(.*?)\"/i', $imginfo, $matches) ) {
 327                                 $index = 0;
 328                                 $param = array();
 329                                 foreach( $matches[1] as $type ){
 330                                         $param[$type] = $matches[2][$index];
 331                                         $index++;
 332                                 }
 333                                 if( $param['src'] && ( strpos($param['src'], $CONF['MediaURL']) === 0 ) ){
 334                                         $imginfo = substr( $param['src'], strlen($CONF['MediaURL']) )
 335                                         . '|' . $param['width']
 336                                         . '|' . $param['height']
 337                                         . '|' . ( $param['title'] ? $param['tiltle'] : $param['alt']);
 338                                 }
 339                         } else {
 340                                 return;
 341                         }
 342                 }
 343
 344                 list ($url, $w, $h, $alt, $ext) = explode("|", $imginfo, 5);
 345                 if (!in_array(strtolower(strrchr($url, ".")), $this->fileex))
 346                         return;
 347                 if (in_array($url, $this->imgfilename))
 348                         return;
 349                 $this->imgfilename[] = $url;
 350                 if (!strstr($url, '/')) {
 351                         $url = $params[1].'/'.$url;
 352                 }
 353                 $this->imglists[] = array ($url, $params[0], $alt, $ext, $params[2]);
 354         }
 355
 356         function doTemplateVar(& $item, $wsize = 80, $hsize = 80, $point = 0, $maxAmount = 0, $titlemode = '', $includeImg = 'true') {
 357                 global $CONF;
 358                 if (!is_numeric($hsize))
 359                         $hsize = 80;
 360                 if (!is_numeric($wsize))
 361                         $wsize = 80;
 362                 $point = ($point == 'lefttop') ? true : false;
 363                 $includeImg = ( $includeImg == 'true' ) ? true : false;
 364
 365                 $filelist = array ();
 366                 $this->imglists = array ();
 367                 $this->imgfilename = array ();
 368                 //$txt = $item->body.$item->more;
 369                 $txt = '';
 370                 $q = 'SELECT ibody as body, imore as more, ititle as title FROM '.sql_table('item').' WHERE inumber='.intval($item->itemid);
 371                 $r = sql_query($q);
 372                 while ($d = mysql_fetch_object($r)) {
 373                         $txt .= $d->body.$d->more;
 374                 }
 375
 376                 if (preg_match_all("/<%(image|popup|paint)\((.*?)\)%>/s", $txt, $imgpnt))
 377                         @ array_walk($imgpnt[2], array (& $this, "exarray"), array ($item->itemid, $item->authorid, $item->title));
 378
 379                 if ($includeImg && preg_match_all("/<img (.*?)>/s", $txt, $imgtmp)){
 380                         foreach($imgtmp[1] as $tmp){
 381                                 $this->exarray($tmp, null, array ($item->itemid, $item->authorid, $item->title), true);
 382                         }
 383                 }
 384
 385                 $filelist = $this->imglists;
 386                 if (!$maxAmount)
 387                         $amount = count($filelist);
 388                 else
 389                         $amount = min($maxAmount, count($filelist));
 390
 391                 if (!$amount) {
 392                         $img_tag = '<img src="'.htmlspecialchars($CONF['ActionURL'], ENT_QUOTES).'?action=plugin&amp;name=TrimImage';
 393                         $img_tag .= '&amp;type=draw&amp;p=non&amp;wsize='.$wsize.'&amp;hsize='.$hsize.$exq;
 394                         $img_tag .= '" width="'.$wsize.'" height="'.$hsize.'" />';
 395                         echo $img_tag;
 396                 } else {
 397                         for ($i = 0; $i < $amount; $i ++) {
 398                                 $src = '';
 399                                 if (!$this->phpThumbParams['config_cache_force_passthru']) {
 400                                         $src = $this->createImage($filelist[$i][0], $wsize, $hsize, $point, true);
 401                                 }
 402                                 if (!$src) {
 403                                         $src = htmlspecialchars($CONF['ActionURL'], ENT_QUOTES).'?action=plugin&amp;name=TrimImage&amp;type=draw'.'&amp;p='.$filelist[$i][0].'&amp;wsize='.$wsize.'&amp;hsize='.$hsize. ($point ? '&amp;pnt=lefttop' : '');
 404                                 }
 405
 406                                 if($titlemode == 'item')
 407                                         $title = ($filelist[$i][4]) ? $filelist[$i][4] : $filelist[$i][2];
 408                                 else
 409                                         $title = ($filelist[$i][2]) ? $filelist[$i][2] : $filelist[$i][4];
 410
 411                                 echo '<img src="'.$src.'" '
 412                                         . ( $wsize ? 'width="'.$wsize.'"'  : '' )
 413                                         . ( $hsize ? 'height="'.$hsize.'"' : '' )
 414                                         . 'alt="'.htmlspecialchars($title, ENT_QUOTES)
 415                                         . '" title="'.htmlspecialchars($title, ENT_QUOTES).'"/>';
 416                                 }
 417                 }
 418         }
 419
 420         function doAction($type) {
 421                 $w = is_numeric(requestVar('wsize')) ? requestVar('wsize') : 80;
 422                 $h = is_numeric(requestVar('hsize')) ? requestVar('hsize') : 80;
 423                 $isLefttop = (requestVar('pnt') == 'lefttop') ? true : false;
 424
 425                 switch ($type) {
 426                         case 'draw' :
 427                                 $this->createImage(requestVar('p'), $w, $h, $isLefttop);
 428                                 break;
 429                         default :
 430                                 return 'No such action';
 431                                 break;
 432                 }
 433         }
 434
 435         function createImage($p, $w, $h, $isLefttop, $cacheCheckOnly = false) {
 436                 $phpThumb = new phpThumb();
 437                 foreach ($this->phpThumbParams as $paramKey => $paramValue) {
 438                         $phpThumb->setParameter($paramKey, $paramValue);
 439                 }
 440
 441                 if($h) $phpThumb->setParameter('h', intval($h));
 442                 if($w) $phpThumb->setParameter('w', intval($w));
 443
 444                 if ($p == 'non') {
 445                         $bghexcolor = 'FFFFFF';
 446                         if ($phpThumb->gdimg_source = phpthumb_functions::ImageCreateFunction($phpThumb->w, $phpThumb->h)) {
 447                                 $phpThumb->setParameter('is_alpha', true);
 448                                 ImageAlphaBlending($phpThumb->gdimg_source, false);
 449                                 ImageSaveAlpha($phpThumb->gdimg_source, true);
 450                                 $new_background_color = phpthumb_functions::ImageHexColorAllocate($phpThumb->gdimg_source, $bghexcolor, false, 127);
 451                                 ImageFilledRectangle($phpThumb->gdimg_source, 0, 0, $phpThumb->w, $phpThumb->h, $new_background_color);
 452                         }
 453                 } else {
 454                         $phpThumb->setParameter('src', '/'.$p);
 455                         if( $w && $h  )
 456                                 $phpThumb->setParameter('zc', $isLefttop ? 2 : 1);
 457                         else
 458                                 $phpThumb->setParameter('aoe', 1);
 459                 }
 460
 461                 // getCache
 462                 $phpThumb->cache_filename = null;
 463                 $phpThumb->CalculateThumbnailDimensions();
 464                 $phpThumb->SetCacheFilename();
 465                 if (file_exists($phpThumb->cache_filename)) {
 466                         $nModified = filemtime($phpThumb->cache_filename);
 467                         if (time() - $nModified < NP_TRIMIMAGE_CACHE_MAXAGE) {
 468                                 global $CONF;
 469                                 preg_match('/^'.preg_quote($this->phpThumbParams['config_document_root'], '/').'(.*)$/', $phpThumb->cache_filename, $matches);
 470                                 $fileUrl = $CONF['MediaURL'].$matches[1];
 471                                 if ($cacheCheckOnly)
 472                                         return $fileUrl;
 473
 474                                 header('Last-Modified: '.gmdate('D, d M Y H:i:s', $nModified).' GMT');
 475                                 if (@ serverVar('HTTP_IF_MODIFIED_SINCE')
 476                                         && ($nModified == strtotime(serverVar('HTTP_IF_MODIFIED_SINCE')))
 477                                         && @ serverVar('SERVER_PROTOCOL')
 478                                 ) {
 479                                         header(serverVar('SERVER_PROTOCOL').' 304 Not Modified');
 480                                         return true;
 481                                 }
 482                                 if ($getimagesize = @ GetImageSize($phpThumb->cache_filename)) {
 483                                         header('Content-Type: '.phpthumb_functions :: ImageTypeToMIMEtype($getimagesize[2]));
 484                                 }
 485                                 elseif (eregi('\.ico$', $phpThumb->cache_filename)) {
 486                                         header('Content-Type: image/x-icon');
 487                                 }
 488                                 if ($this->phpThumbParams['config_cache_force_passthru']) {
 489                                         @ readfile($phpThumb->cache_filename);
 490                                 } else {
 491                                         header('Location: '.$fileUrl);
 492                                 }
 493                                 return true;
 494                         }
 495                 }
 496                 if ($cacheCheckOnly) {
 497                         unset ($phpThumb);
 498                         return false;
 499                 }
 500
 501                 // generate
 502                 $phpThumb->GenerateThumbnail();
 503
 504                 // putCache
 505                 if (!rand(0, 20))
 506                         $phpThumb->CleanUpCacheDirectory();
 507                 $phpThumb->RenderToFile($phpThumb->cache_filename);
 508                 @ chmod($phpThumb->cache_filename, 0666);
 509
 510                 // to browser
 511                 $phpThumb->OutputThumbnail();
 512                 unset ($phpThumb);
 513                 return true;
 514         }
 515
 516         function canEdit() {
 517                 global $member, $manager;
 518                 if (!$member->isLoggedIn())
 519                         return 0;
 520                 return $member->isAdmin();
 521         }
 522
 523         function createGlobalItemLink($itemid, $extra = '') {
 524                 global $CONF, $manager;
 525                 $itemid = intval($itemid);
 526                 if ($CONF['URLMode'] == 'pathinfo') {
 527                         $link = $CONF['ItemURL'].'/item/'.$itemid;
 528                 } else {
 529                         $blogid = getBlogIDFromItemID($itemid);
 530                         $b_tmp = & $manager->getBlog($blogid);
 531                         $blogurl = $b_tmp->getURL();
 532                         if (!$blogurl) {
 533                                 $blogurl = $CONF['IndexURL'];
 534                         }
 535                         if (substr($blogurl, -4) != '.php') {
 536                                 if (substr($blogurl, -1) != '/')
 537                                         $blogurl .= '/';
 538                                 $blogurl .= 'index.php';
 539                         }
 540                         $link = $blogurl.'?itemid='.$itemid;
 541                 }
 542                 return addLinkParams($link, $extra);
 543         }
 544 }