inc/classes/rdf.class.php

   1 <?php
   2 /* $Id$ */
   3
   4 //
   5 // +----------------------------------------------------------------------+
   6 // | rss Parser                                                           |
   7 // | Copyright (c) 2001 Stefan Saasen                                     |
   8 // +----------------------------------------------------------------------+
   9 // | The contents of this file are subject to the Mozilla Public License  |
  10 // | Version 1.1 (the "License"); you may not use this file except in     |
  11 // | compliance with the License. You may obtain a copy of the License at |
  12 // | http://www.mozilla.org/MPL/                                          |
  13 // |                                                                      |
  14 // | Software distributed under the License is distributed on an "AS IS"  |
  15 // | basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See  |
  16 // | the License for the specific language governing rights and           |
  17 // | limitations under the License.                                       |
  18 // +----------------------------------------------------------------------+
  19 // |                                                                      |
  20 // | Maintainer and initial developer:                                    |
  21 // | Stefan Saasen <s@fase4.com>                                          |
  22 // |                                                                      |
  23 // | Proxy and authentication methods added by:                           |
  24 // | Marco Kraus <marco.kraus@siemens.com>                                |
  25 // |                                                                      |
  26 // | Decoding of data by htmlentities or utf8_decode added by:            |
  27 // | Roland Haeder <webmaster@mxchange.org>                               |
  28 // |                                                                      |
  29 // +----------------------------------------------------------------------+
  30 // | Ref:                                                                 |
  31 // |   @link http://www.fase4.com/rdf/                   Latest release   |
  32 // +----------------------------------------------------------------------+
  33
  34 /**
  35  * Class RSS Parser
  36  *
  37  * This class offers methods to parse RSS Files
  38  *
  39  * @link      http://www.fase4.com/rdf/ Latest release of this class
  40  * @package   rss
  41  * @copyright Copyright (c) 2001 fase4.com. All rights reserved.
  42  * @author    Stefan Saasen <s@fase4.com>
  43  * @author    Roland Haeder <webmaster@mxchange.org>
  44  * @version   1.7 ($Date$Revision: 856 $
  45  * @access    public
  46  */
  47
  48 class fase4_rdf {
  49
  50         /**
  51          * Word-wrapping mode for description, set it to 0 do disable this feature! Ommits _use_nl2br!
  52          *
  53          * @access private
  54          * @var    integer
  55          */
  56         var $_word_wrap = '0';
  57
  58         /**
  59          * Wether to recode \n -> <br /> or not in description
  60          *
  61          * @access private
  62          * @var    boolean
  63          */
  64         var $_use_nl2br = true;
  65
  66         /**
  67          * Sets the decoding mode of the read data (UTF8 scrambles some german umlauts here!)
  68          *
  69          * "htmlentities" - Use the function htmlentities()
  70          * "utf8_decode"  - Use the function ut8_decode() when you have UTF8 encoded text
  71          * <empty>        - Use non of both
  72          *
  73          * @access private
  74          * @var    string
  75          */
  76         var $_decoding_mode = '';
  77
  78         /**
  79          * If $_link_target is set a target='xxx' attribute in each <a /> and <form accept-charset="utf-8" /> html tag will be added
  80          *
  81          * Possible values are "_blank", "_content", "_parent", "_self", "_top"
  82          *
  83          * @access private
  84          * @var    string
  85          */
  86         var $_link_target = '_blank';
  87
  88         /**
  89          * vars for proxy settings - Prox Host
  90          *
  91          * @access private
  92          * @var      string
  93          */
  94         var $_phost = '';
  95
  96         /**
  97          * vars for proxy settings - Prox Port
  98          *
  99          * @access private
 100          * @var      string
 101          */
 102         var $_pport = '';
 103
 104         /**
 105          * vars for proxy settings - Prox Username
 106          *
 107          * @access private
 108          * @var      string
 109          */
 110         var $_pname = '';
 111
 112         /**
 113          * vars for proxy settings - Prox Password
 114          *
 115          * @access private
 116          * @var      string
 117          */
 118         var $_ppasswd = '';
 119
 120         /**
 121          * just a flag for checking if proxy-support should be enabled
 122          * set default to false (will be enabled if set_proxy is called)
 123          *
 124          * @access   private
 125          * @see      set_proxy()
 126          * @var      bool
 127          */
 128         var $_use_proxy = false;
 129
 130         /**
 131          * just a flag for checking if proxy-support with authentication
 132          * should be enabled
 133          * set default to false (will be enabled if set_proxy is called)
 134          *
 135          * @access   private
 136          * @see      set_proxy()
 137          * @var      boolean
 138          */
 139         var $_use_proxy_auth = false;
 140
 141         /**
 142          * The time the Files will be cached (in seconds).
 143          *
 144          * @access private
 145          * @var    int
 146          */
 147         var $_refresh = 60;   // int
 148
 149         /**
 150          * The Name of the cached File.
 151          *
 152          * @access private
 153          * @var    string
 154          */
 155         var $_cached_file = '';   // String
 156
 157         /**
 158          * Indicates whether the cached or the remote file was used.
 159          *
 160          * @access private
 161          * @var    boolean
 162          */
 163         var $_use_cached_file = true;
 164
 165         /**
 166          * (fast|normal) depends on _use_dynamic_display(). _use_dynamic_display( TRUE ) -> 'normal', otherwise 'fast'
 167          *
 168          * @access private
 169          * @var    string
 170          */
 171         var $_cache_type = 'fast';
 172
 173         /**
 174          * The Name of the Remote File.
 175          *
 176          * @access private
 177          * @var    string
 178          */
 179         var $_remote_file = '';
 180
 181         /**
 182          * Path to the Cache Directory.
 183          *
 184          * @access private
 185          * @var    string
 186          */
 187         var $_cache_dir = 'cache/';  // String
 188
 189         /**
 190          * Indicates whether the Creating of the Cache Directory needs to be done or not.
 191          *
 192          * @access private
 193          * @var    boolean
 194          */
 195         var $_cache_dir_ok = false;
 196
 197         /**
 198          * Type of the file to be parsed (RSS or RDF).
 199          *
 200          * The Type depends on the root node
 201          *
 202          * @access private
 203          * @var    string
 204          */
 205         var $_type = 'rss'; // string (rss or rdf)
 206
 207         /**
 208          * Array of Display Settings.
 209          *
 210          * Specific Parameters can be set to hidden. These are:
 211          * image, channel and textinput. If set to "hidden" those elements won't be displayed.
 212          *
 213          * @access private
 214          * @var    array
 215          */
 216         var $_display_opt = array(
 217                 'build'        => '',
 218                 'image'        => '',
 219                 'channel'      => '',
 220                 'textinput'    => '',
 221                 'cache_update' => '',
 222                 'sitelink'     => '',
 223                 'refid'        => '',
 224                 'reflink'      => '',
 225         );
 226
 227         /**
 228          * Defines the width attribute in the table that holds the rdf/rss representation
 229          *
 230          * @access private
 231          * @var    int
 232          * @see    see_table_width()
 233          */
 234         var $_table_width = '100%';
 235
 236         /**
 237          * Indicates whether or not to use dynamic Display Settings
 238          *
 239          * @access private
 240          * @var    array
 241          */
 242         var $_use_dynamic_display = false;
 243
 244         /**
 245          * <item> count
 246          *
 247          * @access private
 248          * @var    int
 249          */
 250         var $_item_count = '0';
 251
 252         /**
 253          * No of max <item>s
 254          *
 255          * @access private
 256          * @var    boolean
 257          */
 258         var $_max_count = false;
 259
 260         /**
 261          * Array containing the content of <channel />
 262          *
 263          * @access private
 264          * @var    array
 265          */
 266         var $_array_channel = array();
 267
 268         /**
 269          * Array containing the content of each <item />
 270          *
 271          * @access private
 272          * @var    array
 273          */
 274         var $_array_item = array();
 275
 276         /**
 277          * Array containing the content of <textinput />
 278          *
 279          * @access private
 280          * @var    array
 281          */
 282         var $_array_textinput = array();
 283
 284         /**
 285          * Array containing the content of <image />
 286          *
 287          * @access private
 288          * @var    array
 289          */
 290         var $_array_image = array();
 291
 292         /**
 293          * Array containing the Channel content. Just For internal XML Parser Purposes.
 294          *
 295          * @access private
 296          * @var    array
 297          */
 298         var $_citem = array();
 299
 300         /**
 301          * Array containing the Channel Parser Depth. Just For internal XML Parser Purposes.
 302          *
 303          * @access private
 304          * @var    array
 305          */
 306         var $_cdepth = array();
 307
 308         /**
 309          * Array containing the Channel tags. Just For internal XML Parser Purposes.
 310          *
 311          * @access private
 312          * @var    array
 313          */
 314         var $_ctags = array( 'x' );
 315
 316         /**
 317          * Array containing the Channel content. Just For internal XML Parser Purposes.
 318          *
 319          * @access private
 320          * @var    array
 321          */
 322         var $_item = array();   // Array
 323
 324         /**
 325          * Array containing the Channel Parser Depth. Just For internal XML Parser Purposes.
 326          *
 327          * @access private
 328          * @var    array
 329          */
 330         var $_depth = array();  // Array
 331
 332         /**
 333          * Array containing the tags. Just For internal XML Parser Purposes.
 334          *
 335          * @access private
 336          * @var    array
 337          */
 338         var $_tags = array( 'x' );  // Array
 339
 340         /**
 341          * Garbage collection: probability in percent
 342          *
 343          * @var      integer     0 => never
 344          * @access   public
 345          */
 346         var $gc_probability = 1;
 347
 348         /**
 349          * HTML Output
 350          *
 351          * @var      string
 352          * @access   private
 353          */
 354         var $_output = '';
 355
 356         /**
 357          * @var  string
 358          */
 359         var $_parse_mode = '';
 360
 361         // Output variable
 362         var $out = '';
 363
 364         // Salt for hashing
 365         var $salt = '';
 366
 367         /**
 368          * Constructor of our Class
 369          *
 370          * This Method checks if the Cache Directory can be found. Otherwise it tries to creat the Cache Directory at the specified Path.
 371          * Additionally the Refresh Time is set to a default Value of 1200s (20 min).
 372          *
 373          * @access    public
 374          * @author    Stefan Saasen <s@fase4.com>
 375          * @see          _refresh
 376          */
 377         function fase4_rdf()
 378         {
 379                 // default Value, to be overwritten in set_refresh()
 380                 $this->_refresh = (time() - 1200);
 381                 $this->_clear_cItems();
 382                 $this->_clear_Items();
 383         }
 384
 385         /**
 386          * This Method starts the parsing of the specified RDF File. The File can be a local or a remote File.
 387          *
 388          * @access    public
 389          * @author    Stefan Saasen <s@fase4.com>
 390          * @param     string $rdf    RDF File (Location)
 391          * @return    string Displays RDF Content ( using _display() )
 392          * @see          _remote_file, cache()
 393          */
 394         function parse_RDF( $rdf )
 395         {
 396                 unset($this->_array_item);
 397                 $this->_remote_file = $rdf;
 398                 $this->out .= "<!-- http://www.fase4.com/rdf/ -->";
 399                 $this->out .= "<table width=\"".$this->_table_width."\">";
 400                 $this->out .= $this->cache();
 401                 $this->out .= "</table>";
 402                 $this->_output = '';
 403                 $this->_item_count = '0';
 404                 return true;
 405         }
 406
 407         /**
 408          * This Method is called when all parsing is finished to use the garbage collection
 409          *
 410          * @access    public
 411          * @author    Stefan Saasen <s@fase4.com>
 412          * @param     string $rdf    RDF File (Location)
 413          * @return    string Displays RDF Content ( using _display() )
 414          * @see          _remote_file, cache()
 415          */
 416         function finish($return = false)
 417         {
 418                 $this->out = str_replace('$', '&#36;', $this->out);
 419
 420                 if (!$return) {
 421                         echo $this->out;
 422                 } else {
 423                         return $this->out;
 424                 }
 425                 $this->_garbage_collection();
 426         }
 427
 428         /**
 429          * With this method you can decide whether to use the normal cache and dynamic display Options or to use a static cache.
 430          *
 431          * In the first case the rdf/rss File will be stored locally, in the second case the html output of the specified source will be stored.
 432          * In this case you can not modify the display settings.
 433          * processing time: ( 1.4792) --> remote file
 434          * processing time: ( 0.0313) --> using 'normal cache' with display Modification turned on.
 435          * processing time: ( 0.0019) --> using 'fast cache'
 436          *
 437          * @access    public
 438          * @author    Stefan Saasen <s@fase4.com>
 439          * @param     string $rdf    RDF File (Location)
 440          * @return    string Displays RDF Content ( using _display() )
 441          * @see          _remote_file, cache()
 442          */
 443         function use_dynamic_display( $bool )
 444         {
 445                 $this->_use_dynamic_display = $bool;
 446                 return true;
 447         }
 448
 449         /**
 450          * This Method avtually parses the XML data.
 451          *
 452          * @access    private
 453          * @author    Stefan Saasen <s@fase4.com>
 454          * @param     string $data    RDF File XML Data
 455          * @see       _clear_Items()
 456          */
 457         function _parse_xRDF( $data )
 458         {
 459                 $this->_clear_Items();
 460                 $xml_parser = xml_parser_create();
 461                 xml_set_object($xml_parser,$this);
 462                 xml_parser_set_option($xml_parser,XML_OPTION_CASE_FOLDING,0);
 463                 xml_set_element_handler($xml_parser, '_startElement', '_endElement');
 464                 xml_set_character_data_handler($xml_parser, '_parseData');
 465                 if (!xml_parse($xml_parser, trim($data))) {
 466                         $this->_throw_exception(sprintf("XML error: %s at line %d",
 467                         xml_error_string(xml_get_error_code($xml_parser)),
 468                         xml_get_current_line_number($xml_parser)).'<br /><br />Exception in function parse_RDF().');
 469                 }
 470                 xml_parser_free($xml_parser);
 471         }
 472
 473
 474         /**
 475          * This Methods allows you to set the Refresh Time
 476          *
 477          * @access    public
 478          * @author    Stefan Saasen <s@fase4.com>
 479          * @param     int $seconds time files will be cached (in seconds).
 480          * @return       boolean
 481          * @see          _refresh
 482          */
 483         function set_refresh( $seconds )
 484         {
 485                 $this->_refresh = (time() - $seconds);
 486                 return true;
 487         }
 488
 489         function set_salt( $saltPara )
 490         {
 491                 $this->salt = $saltPara;
 492                 return true;
 493         }
 494
 495         /**
 496          * This Methods allows you to set the No. of <item>s to display
 497          *
 498          * @access    public
 499          * @param     int $int No of max <item>s
 500          * @author    Stefan Saasen <s@fase4.com>
 501          * @return       boolean
 502          * @see          _max_count, _endElement()
 503          */
 504         function set_max_item( $int )
 505         {
 506                 $this->_max_count = $int;
 507                 return true;
 508         }
 509
 510         /**
 511          * This Methods allows you to set the Cache Directory
 512          *
 513          * @access    public
 514          * @author    Stefan Saasen <s@fase4.com>
 515          * @param     string $dir Path to Directory.
 516          * @return       boolean
 517          * @see          _cache_dir
 518          */
 519         function set_CacheDir( $dir )
 520         {
 521                 if(substr($dir, -1) != '/') {
 522                         $dir = $dir.'/';
 523                 }
 524                 $this->_cache_dir = $dir;
 525         }
 526
 527         /**
 528          * This Method displays Error Messages and terminates the Execution of the Script
 529          *
 530          * @access    private
 531          * @param     string $msg Message to display on failure
 532          * @author    Stefan Saasen <s@fase4.com>
 533          */
 534         function _throw_exception( $msg )
 535         {
 536                 $this->out .= "<div style=\"font-family: verdana, helvetica, arial, sans-serif;font-size:11px; color: #6699cc;margin-top:10px;margin-bottom:10px;\" align=\"center\">fase4 RDF Error: ".$msg."</div>";
 537                 return true;
 538         }
 539
 540         /**
 541          * This Method clears the Array containig the Items.
 542          *
 543          * @access    private
 544          * @author    Stefan Saasen <s@fase4.com>
 545          * @see       _item
 546          */
 547         function _clear_Items( ) {
 548                 $this->_item = array(
 549                         'title'         => '',
 550                         'link'          => '',
 551                         'description'   => '',
 552                         'url'           => '',
 553                         'language'      => '',
 554                         'pubDate'       => '',
 555                         'lastBuildDate' => '',
 556                         'width'         => '',
 557                         'height'        => ''
 558                 );
 559         }
 560         /**
 561          * This Method clears the Array containig the Channel Items.
 562          *
 563          * @access    private
 564          * @author    Stefan Saasen <s@fase4.com>
 565          * @see       _item
 566          */
 567         function _clear_cItems( ) {
 568                 $this->_citem = array(
 569                         'title'          => '',
 570                         'link'           => '',
 571                         'description'    => '',
 572                         'url'            => '',
 573                         'language'       => '',
 574                         'copyright'      => '',
 575                         'managingEditor' => '',
 576                         'webMaster'      => '',
 577                         'pubDate'        => '',
 578                         'lastBuildDate'  => '',
 579                         'category'       => '',
 580                         'generator'      => '',
 581                         'docs'           => '',
 582                         'cloud'          => '',
 583                         'ttl'            => '',
 584                         'image'          => '',
 585                         'textinput'      => '',
 586                         'skipHours'      => '',
 587                         'skipDays'       => '',
 588                         'sitelink'       => '',
 589                         'refid'          => '',
 590                         'reflink'        => '',
 591                 );
 592         }
 593
 594         /**
 595          * XML Parser Start Element Handler
 596          *
 597          * @access    private
 598          * @author    Stefan Saasen <s@fase4.com>
 599          * @param     mixed  $parser a reference to the XML parser calling the handler.
 600          * @param     string $name contains the name of the element for which this handler is called.
 601          * @param     string $attrs contains an associative array with the element's attributes (if any).
 602          * @see          _get_ChannelData(), _clear_Items(), _type, _parse_mode, _depth, _tags, _cdepth, _ctags
 603          */
 604         function _startElement($parser, $name, $attrs) {
 605                 // We have to determine, which type of xml data we have to parse
 606                 if($name == 'rss') {
 607                         $this->_type = 'rss';
 608                 } elseif($name == 'rdf:RDF' OR $name == 'rdf') {
 609                         $this->_type = 'rdf';
 610                 }
 611
 612
 613                 if ( $name == 'channel' AND $this->_type != 'rdf' ) {
 614                         $this->_parse_mode = 'channel';
 615                 } elseif ( ($name=='item')
 616                 ||($name=='image')
 617                 ||($name=='textinput')
 618                 ||(($name=='channel') && ($this->_type != 'rss')) ) {
 619                         if($this->_parse_mode=='channel') {
 620                                 $this->_get_ChannelData( $parser );
 621                         }
 622                         $this->_parse_mode = 'all';
 623                 }
 624
 625                 if( !isset( $this->_depth[$this->get_parser_id($parser)] ) ) {
 626                         $this->_depth[$this->get_parser_id($parser)] = '0';
 627                 }
 628                 $this->_depth[$this->get_parser_id($parser)]++;
 629                 array_push($this->_tags, $name);
 630
 631                 if( !isset( $this->_cdepth[$this->get_parser_id($parser)] ) ) {
 632                         $this->_cdepth[$this->get_parser_id($parser)] = '0';
 633                 }
 634                 $this->_cdepth[$this->get_parser_id($parser)]++;
 635                 array_push($this->_ctags, $name);
 636         }   // END _startElement()
 637
 638         /**
 639          * Retrives the Channel Data in <rss> File
 640          *
 641          * @access    private
 642          * @author    Stefan Saasen <s@fase4.com>
 643          * @param     mixed  $parser a reference to the XML parser calling the handler.
 644          * @see          _output, _display_opt, _citem
 645          */
 646         function _get_ChannelData( $parser )
 647         {
 648                 $this->_citem['link'] = trim($this->_citem['link']);
 649                 if (($this->_display_opt['sitelink'] == $this->_citem['link']) && (!empty($this->_display_opt['reflink'])) && (!empty($this->_display_opt['refid'])))
 650                 {
 651                         $this->_citem['link'] .= $this->_display_opt['reflink'].$this->_display_opt['refid'];
 652                 }
 653
 654                 if( empty($this->_display_opt['channel']) OR
 655                 $this->_display_opt['channel'] != 'hidden') {
 656                         $this->_output .= "<tr><td>\n";
 657                         $this->_output .= "<table border=\"0\" width=\"100%\" class=\"fase4_rdf_meta\" cellspacing=\"5\" cellpadding=\"2\">\n";
 658                         $this->_output .= "<tr><td class=\"fase4_rdf_main_title\"><div class=\"fase4_rdf_main_title\">".htmlspecialchars($this->_citem['title'])."</div></td></tr>\n";
 659                         $this->_output .= "<tr><td class=\"fase4_rdf\">".strip_tags($this->_citem['description'], '<a>, <img>')."</td></tr>\n";
 660                         $this->_output .= "<tr><td>&nbsp;</td></tr>\n";
 661                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 662                         if(isset($this->_display_opt['build']) && $this->_display_opt['build'] != 'hidden') {
 663                                 if($this->_citem['lastBuildDate']){$this->_output .= 'build: '. $this->_citem['lastBuildDate'].'<br />';}
 664                         }
 665                         if(isset($this->_display_opt['cache_update']) && $this->_display_opt['cache_update'] != 'hidden' && ( $_update = $this->get_cache_update_time()) ) {
 666                                 $this->_output .= 'cache update: '.$_update."<br />\n";
 667                         }
 668                         $this->_output .= "<a href=\"".$this->_citem['link']."\" ";
 669                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 670                         $this->_output .= ">".$this->_cut_string($this->_citem['link']) . '</a>';
 671                         $this->_output .= "</td></tr>\n";
 672                         $this->_output .= "<tr><td><hr noshade width=\"100%\" size=\"1\"></td></tr>\n";
 673                         $this->_output .= "</table></td></tr>";
 674                 }
 675                 $this->_array_channel = array(
 676                         'title'         => $this->_citem['title'],
 677                         'link'          => $this->_citem['link'],
 678                         'description'   => $this->_citem['description'],
 679                         'lastBuildDate' => $this->_citem['lastBuildDate']);
 680         }
 681
 682         /**
 683          * XML Parser End Element Handler
 684          *
 685          * @access    private
 686          * @author    Stefan Saasen <s@fase4.com>
 687          * @param     mixed  $parser a reference to the XML parser calling the handler.
 688          * @param     string $name contains the name of the element for which this handler is called.
 689          * @see          _clear_Items(), _type, _parse_mode, _depth, _tags, _cdepth, _ctags, _item, _output, _display_opt
 690          */
 691         function _endElement($parser, $name) {
 692                 array_pop($this->_tags);
 693                 $this->_depth[$this->get_parser_id($parser)]--;
 694                 array_pop($this->_ctags);
 695                 $this->_cdepth[$this->get_parser_id($parser)]--;
 696                 $this->_item['link'] = trim($this->_item['link']);
 697                 if ((!empty($this->_display_opt['refid'])) && (!empty($this->_item['link'])))
 698                 {
 699                         if (!isInString('refid=', $this->_item['link'])) $this->_item['link'] .= '?refid=' . $this->_display_opt['refid'];
 700                 }
 701                 switch ($name) {
 702                         case 'item':
 703                                 if(empty($this->_max_count) OR $this->_item_count < $this->_max_count) {
 704                                         if($this->_item['title'] != $this->_item['description']
 705                                         AND $this->_item['description']) {
 706
 707                                                 // word-wrapping added by Roland Haeder <webmaster@mxchange.org>
 708                                                 if (($this->_word_wrap > 0) && (strlen($this->_item['description']) > $this->_word_wrap))
 709                                                 {
 710                                                         // Switch off _use_nl2br
 711                                                         $this->_use_nl2br = false;
 712                                                         // First remove all \n
 713                                                         $this->_item['description'] = str_replace('\n', ' ', $this->_item['description']);
 714                                                         // Wrap with <br />\n
 715                                                         $this->_item['description'] = wordwrap($this->_item['description'], $this->_word_wrap, "*<br />\n");
 716                                                 }
 717                                                 elseif (($this->_word_wrap == '0') && (!$this->_use_nl2br))
 718                                                 {
 719                                                         // Strip tags out instead when word-wrap is disabled
 720                                                         $this->_item['description'] = strip_tags($this->_item['description'], '<a>, <img>');
 721                                                 }
 722
 723                                                 // nl2br added by Roland Haeder <webmaster@mxchange.org>
 724                                                 if ($this->_use_nl2br) $this->_item['description'] = nl2br($this->_item['description']);
 725
 726                                                 $this->_output .= "<tr><td class=\"fase4_rdf_title\"><div class=\"fase4_rdf_title\"><a class=\"fase4_rdf_title\" href=\"".$this->_item['link']."\" ";
 727                                                 if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 728                                                 $this->_output .= ">".strip_tags($this->_item['title'], '<a>, <img>').'</a> ('.$this->_item['pubDate'].")</div></td></tr>\n";
 729                                                 $this->_output .= "<tr><td class=\"fase4_rdf\">".$this->_item['description']."</td></tr>\n";
 730                                                 // we just display the <hr> if there is a description
 731                                                 $this->_output .= "<tr><td><hr noshade=\"noshade\" size=\"1\" /></td></tr>\n";
 732                                         } else {
 733                                                 $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 734                                                 $this->_output .= "<a href=\"".$this->_item["link"]."\" ";
 735                                                 if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 736                                                 $this->_output .= ">".$this->_item["title"]."</a></td></tr>\n";
 737                                         }
 738
 739                                         $this->_array_item[] = array(
 740                                                 'title'       => $this->_item['title'],
 741                                                 'link'        => $this->_item['link'],
 742                                                 'description' => $this->_item['description']
 743                                         );
 744
 745                                         ++$this->_item_count;
 746                                 }
 747                                 $this->_clear_Items();
 748                                 break;
 749
 750                         case 'image':
 751                                 if(isset($this->_display_opt['image']) && ($this->_display_opt['image'] != 'hidden') && $this->_item['url']) {
 752                                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 753                                         $this->_output .= "<a href=\"".$this->_item['link']."\" ";
 754                                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 755                                         $this->_output .= "><img src=\"".$this->_item['url']."\"";
 756                                         if(isset($this->_item['width']) && isset($this->_item['height'])) {
 757                                                 $this->_output .= " width=\"".$this->_item['width']."\" height=\"".$this->_item['height']."\"";
 758                                         }
 759                                         $this->_output .= " alt=\"".$this->_item['title']."\" border=\"0\" /></a></td></tr>\n";
 760
 761                                         $this->_array_image[] = array(
 762                                                 'url'    => $this->_item['url'],
 763                                                 'link'   => $this->_item['link'],
 764                                                 'width'  => $this->_item['width'],
 765                                                 'height' => $this->_item['height']
 766                                         );
 767                                         $this->_clear_Items();
 768                                 } elseif( isset($this->_display_opt['image'] ) && ($this->_display_opt['image'] == 'hidden') ) {
 769                                         $this->_clear_Items();
 770                                 }
 771
 772                                 break;
 773
 774                         case 'channel':
 775                                 if(isset($this->_display_opt['channel']) AND $this->_display_opt['channel'] != 'hidden' AND $this->_item['title'] != '') {
 776                                         $this->_output .= "<tr><td>\n";
 777                                         $this->_output .= "<table border=\"0\" width=\"100%\" class=\"fase4_rdf_meta\" cellspacing=\"5\" cellpadding=\"2\">\n";
 778                                         $this->_output .= "<tr><td class=\"fase4_rdf\"><div class=\"fase4_rdf_title\">".htmlspecialchars($this->_item['title'])."</div></td></tr>\n";
 779                                         $this->_output .= "<tr><td class=\"fase4_rdf\">".strip_tags($this->_item['description'], '<a>, <img>')."</td></tr>\n";
 780                                         $this->_output .= "<tr><td>&nbsp;</td></tr>\n";
 781                                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 782                                         if($this->_display_opt['build'] != 'hidden') {
 783                                                 if($this->_item['lastBuildDate']){$this->_output .= 'build: '. $this->_item['lastBuildDate'].'<br />';}
 784                                         }
 785                                         if($this->_display_opt['cache_update'] != 'hidden' && ( $_update = $this->get_cache_update_time()) ) {
 786                                                 $this->_output .= 'cache update: '.$_update."<br />\n";
 787                                         }
 788                                         $this->_output .= "<a href=\"".$this->_item['link']."\" ";
 789                                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 790                                         $this->_output .= ">".$this->_cut_string($this->_item['link'])."</a>\n";
 791                                         $this->_output .= "</td></tr>\n";
 792                                         $this->_output .= "</table></td></tr>\n";
 793                                 }
 794                                 $this->_array_channel = array(
 795                                         'title'         => $this->_item['title'],
 796                                         'link'          => $this->_item['link'],
 797                                         'description'   => $this->_item['description'],
 798                                         'lastBuildDate' => $this->_item['lastBuildDate']
 799                                 );
 800                                 $this->_clear_Items();
 801                                 $this->_clear_cItems();
 802                                 break;
 803
 804                         case 'textinput':
 805                                 if(isset($this->_display_opt['textinput']) && ($this->_display_opt['textinput'] != 'hidden') && $this->_item['name'] && $this->_item['link']) {
 806                                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 807                                         $this->_output .= "<form accept-charset=\"utf-8\" action=\"".$this->_item['link']."\" ";
 808                                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 809                                         $this->_output .= "method=\"get\">\n";
 810                                         $this->_output .= "<div class=\"fase4_rdf_title\">".$this->_item['title']."</div>";
 811                                         $this->_output .= strip_tags($this->_item['description'], '<a>, <img>')."<br /><br />\n";
 812                                         $this->_output .= "<input class=\"fase4_rdf_input\" type=\"text\" name=\"".$this->_item['name']."\">&nbsp;\n";
 813                                         $this->_output .= "<input class=\"fase4_rdf_input\" type=\"submit\" value=\"go\">";
 814                                         $this->_output .= "</form>\n";
 815                                         $this->_output .= "</td></tr>\n";
 816                                         $this->_array_textinput = array(
 817                                                 'title'       => $this->_item['title'],
 818                                                 'name'        => $this->_item['name'],
 819                                                 'link'        => $this->_item['link'],
 820                                                 'description' => $this->_item['description']
 821                                         );
 822                                         $this->_clear_Items();
 823                                 } elseif( isset($this->_display_opt['textinput']) && ($this->_display_opt['textinput'] == 'hidden') ) {
 824                                         $this->_clear_Items();
 825                                 }
 826
 827                                 break;
 828                 }
 829         }
 830
 831         /**
 832          * This Method returns the data from the <channel /> paragraph.
 833          *
 834          * @access    public
 835          * @author    Stefan Saasen <s@fase4.com>
 836          * @return    array
 837          * @see       _array_channel
 838          */
 839         function get_array_channel( )
 840         {
 841                 return $this->_array_channel;
 842         }
 843
 844         /**
 845          * This Method returns the data from each <item /> paragraph.
 846          *
 847          * @access    public
 848          * @author    Stefan Saasen <s@fase4.com>
 849          * @return    array
 850          * @see       _array_item
 851          */
 852         function get_array_item( )
 853         {
 854                 return $this->_array_item;
 855         }
 856
 857         /**
 858          * This Method returns the data from <textinput />.
 859          *
 860          * @access    public
 861          * @author    Stefan Saasen <s@fase4.com>
 862          * @return    array
 863          * @see       _array_textinput
 864          */
 865         function get_array_textinput( )
 866         {
 867                 return $this->_array_textinput;
 868         }
 869
 870         /**
 871          * Getter for parser id from resource
 872          *
 873          * @access   private
 874          * @author   Roland Haeder <webmaster@mxchange.org>
 875          * @return   int
 876          */
 877         function get_parser_id ($parser) {
 878                 // Default is zero
 879                 $id = '0';
 880
 881                 // Is it a resource?
 882                 if (is_resource($parser)) {
 883                         // Cast the resource into id
 884                         $id = (int) $parser;
 885                 } // END - if
 886
 887                 // Return the id
 888                 return $id;
 889         }
 890
 891         /**
 892          * This Method returns the data from <image />.
 893          *
 894          * @access    public
 895          * @author    Stefan Saasen <s@fase4.com>
 896          * @return    array
 897          * @see       _array_image
 898          */
 899         function get_array_image( )
 900         {
 901                 return $this->_array_image;
 902         }
 903
 904         /**
 905          * XML Parser Data Handler
 906          *
 907          * @access    private
 908          * @author    Stefan Saasen <s@fase4.com>
 909          * @param     mixed  $parser a reference to the XML parser calling the handler.
 910          * @param     string $text contains the character data as a string.
 911          * @see          _parse_mode, _item, _tags, _depth, _citem, _ctags, _cdepth
 912          */
 913         function _parseData($parser, $text)
 914         {
 915                 // Deocing mode added by Roland Haeder <webmaster@mxchange.org>
 916                 switch ($this->_decoding_mode)
 917                 {
 918                         case 'utf8_decode':
 919                                 $text = utf8_decode($text);
 920                                 break;
 921
 922                         case 'htmlentities':
 923                                 $text = htmlentities($text);
 924                                 break;
 925                 }
 926
 927                 $clean = preg_replace("/\s/", "", $text);
 928                 if ($clean) {
 929                         $text = preg_replace("/^\s+/", "", $text)."\n";
 930                         if($this->_parse_mode == 'all') {
 931                                 if ( isset($this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]]) &&
 932                                 $this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]] ) {
 933                                         $this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]] .= $text;
 934                                 } else {
 935                                         $this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]] = $text;
 936                                 }
 937                         } elseif (isset($this->_parse_mode) && $this->_parse_mode == 'channel') {
 938                                 if ( isset($this->_citem[$this->_ctags[$this->_cdepth[$this->get_parser_id($parser)]]]) ) {
 939                                         $this->_citem[$this->_ctags[$this->_cdepth[$this->get_parser_id($parser)]]] .= $text;
 940                                 } else {
 941                                         $this->_citem[$this->_ctags[$this->_cdepth[$this->get_parser_id($parser)]]] = $text;
 942                                 }
 943                         }
 944                 }
 945         }
 946
 947         /**
 948          * This Method allows you to choose if specific Parameters are displayed or not. These are:
 949          * image, channel, textinput, build and cache_update. If set to "hidden" those elements won't be displayed.
 950          *
 951          * @access    public
 952          * @author    Stefan Saasen <s@fase4.com>
 953          * @param     array  $options
 954          * @see          _display_opt
 955          */
 956         function set_Options( $options = '' )
 957         {
 958                 if(is_array( $options )) {
 959                         $this->_display_opt = $options;
 960                         return true;
 961                 } else {
 962                         unset($this->_display_opt);
 963                         return false;
 964                 }
 965         }
 966
 967         /**
 968          * This Method allows you to define the width of the table that holds the representation of the rdf/rss file.
 969          *
 970          * @access    public
 971          * @author    Stefan Saasen <s@fase4.com>
 972          * @param     int  $width  attribute width in tag <table>
 973          * @see          _table_width
 974          */
 975         function set_table_width( $width = 400 )
 976         {
 977                 $this->_table_width = $width;
 978                 return true;
 979         }
 980
 981         /**
 982          * This Method returns an assocative Array with available Options.
 983          *
 984          * The Keys are the Name of the Options to be set.
 985          * The Values are  short Description of available Options.
 986          *
 987          * @access    public
 988          * @author    Stefan Saasen <s@fase4.com>
 989          * @return    array  $options
 990          * @see          _display_opt
 991          */
 992         function get_Options() {
 993                 $options = array(
 994                         'image'        => "If 'image' is set to \"hidden\" no image provided by the RDF Publisher will be displayed.",
 995                         'channel'      => "If 'channel' is set to \"hidden\" the Channel Meta Data (i.e the Title and the short description regarding the RDF Publisher will not be displayed",
 996                         'textinput'    => "If set to \"hidden\" no Input Form will be displayed",
 997                         'build'        => "If set to \"hidden\" the Build Date (if provided) of the RDF File will not be displayed",
 998                         'cache_update' => "If set to \"hidden\" the Update Date/Time of the cached Rdf File will not be displayed"
 999                 );
1000                 return $options;
1001         }
1002
1003         /**
1004          * This Method returns the Content of the RDF File in one string. The String actually holds the whole XML Document.
1005          *
1006          * @access    public
1007          * @author    Stefan Saasen <s@fase4.com>
1008          * @param     string $rdf    RDF File (Location)
1009          * @return    string XML Presentation of parsed RDF File
1010          * @see          _cached_file, _remote_file, _cache_dir, _refresh, _update_cache()
1011          */
1012         function cache()
1013         {
1014                 // checks if the cache directory already exists
1015                 // if not, the cache directory will be created
1016                 if(!$this->_cache_dir_ok) {
1017                         $this->_create_cache_dir();
1018                 }
1019                 if($this->_use_dynamic_display == true) {
1020                         $this->_cached_file = md5('dynamic'.$this->salt.$this->_remote_file) . '.cache';
1021                         $this->_cache_type = 'normal';
1022                 } else {
1023                         $this->_cached_file = md5($this->salt.$this->_remote_file) . '.cache';
1024                         $this->_cache_type = 'fast';
1025                 }
1026
1027                 $_cache_f = $this->_cache_dir.$this->_cached_file;
1028
1029                 if ( (!file_exists($_cache_f)) || (filemtime($_cache_f) < $this->_refresh) || (filesize($_cache_f) == 0)) {
1030                         // We have to parse the remote file
1031                         $this->_use_cached_file = false;
1032                         // --> we want to provide proper Information for Use in
1033                         // get_cache_update_time()
1034                         clearstatcache();
1035                         if($this->_use_dynamic_display == true) {
1036                                 $_rdf = @implode(' ', $this->_rdf_data()); // -> proxy
1037                                 if(!$_rdf) {
1038                                         $this->_throw_exception( $this->_remote_file.' is not available' );
1039                                 }
1040                                 $this->_parse_xRDF( $_rdf );
1041                                 $this->_update_cache( $_rdf );
1042                                 $data = $this->_output;
1043                         } else {
1044                                 $_rdf = @implode(' ', $this->_rdf_data()); // -> proxy
1045                                 if(!$_rdf) {
1046                                         $this->_throw_exception( $this->_remote_file.' is not available' );
1047                                 }
1048                                 $this->_parse_xRDF( $_rdf );
1049                                 $this->_update_cache( $this->_output );
1050                                 $data = $this->_output;
1051                         }
1052                 } else {
1053                         // we can use the cached file
1054                         $this->_use_cached_file = true;
1055                         if($this->_use_dynamic_display == true) {
1056                                 $this->_parse_xRDF( implode(' ', file($_cache_f)) );
1057                                 $data = $this->_output;
1058                         } else {
1059                                 $data = @implode(' ', file($_cache_f));
1060                         }
1061                 }
1062                 return trim($data);
1063         }   // END cache()
1064
1065         /**
1066          * This Methods creates the Cache Directory if the specified Directory does not exist.
1067          *
1068          * @access    private
1069          * @author    Stefan Saasen <s@fase4.com>
1070          * @param     string $dir Path to Directory.
1071          * @return       boolean
1072          * @see          _cache_dir, _cache_dir_ok
1073          */
1074         function _create_cache_dir()
1075         {
1076                 $path = '';
1077                 if(!@is_dir($this->_cache_dir)) {
1078                         $arr = explode('/', $this->_cache_dir);
1079                         $c = count($arr);
1080                         if($arr[0]=='') {
1081                                 $path = '/';
1082                         }
1083                         for($i = '0';$i<$c;$i++)
1084                         {
1085                                 if($arr[$i]!='') {
1086                                         $path .= $arr[$i].'/';
1087                                         if(!@is_dir($path)) {
1088                                                 if(!@mkdir($path, 0777)) {
1089                                                         $this->_throw_exception("failed to create directory:<b>".$this->_cache_dir."</b>.<br /><br />Exception on Line: ".__LINE__);
1090                                                         return false;
1091                                                 }
1092                                         }
1093                                 }
1094                         }
1095                         $this->_cache_dir_ok = true;
1096                         return true;
1097                 } else {
1098                         $this->_cache_dir_ok = true;
1099                         return true;
1100                 }
1101         }   // END _create_cache_dir()
1102
1103         /**
1104          * This Method updates the cached RDF Files and synchronises them with their remote Counterparts.
1105          *
1106          * @access    private
1107          * @author    Stefan Saasen <s@fase4.com>
1108          * @param     string $rdf    RDF File (Location)
1109          * @see          _cache_dir, _cached_file, _throw_exception()
1110          */
1111         function _update_cache( $content = '' )
1112         {
1113                 $_local = @fopen( $this->_cache_dir.$this->_cached_file, 'w' );
1114                 if(!$_local) {
1115                         $this->_throw_exception( 'Cannot open '.$this->_cached_file.'<br /><br />Exception at Line: '.__LINE__ );
1116                         return false;
1117                 }
1118                 if (fwrite( $_local, $content) === false) {
1119                         $this->_throw_exception( 'Cannot write to '.$this->_cached_file.'<br /<br />Exeception at Line: '.__LINE__);
1120                         return false;
1121                 }
1122                 fclose( $_local );
1123                 @chmod( $this->_cache_dir.$this->_cached_file, 0666);
1124                 return true;
1125         }   // END _update_cache()
1126
1127         /**
1128          * This Method returns the Date/Time of last Cache Update of the actually parsed RDF File.
1129          *
1130          * @access    public
1131          * @author    Stefan Saasen <s@fase4.com>
1132          * @return       string Date/Time of last Update
1133          * @see          _cache_dir, _cached_file
1134          */
1135         function get_cache_update_time()
1136         {
1137                 return (file_exists($this->_cache_dir.$this->_cached_file))?date('d.m.Y H:i:s', filemtime($this->_cache_dir.$this->_cached_file)):'Cachemiss';
1138         }   // END get_cache_update_time()
1139
1140         /**
1141          * This Method returns the Type of Cache that was used ('normal' or 'fast')
1142          *
1143          * @access    public
1144          * @author    Stefan Saasen <s@fase4.com>
1145          * @param     string $rdf    RDF File (Location)
1146          * @return    string Displays RDF Content ( using _display() )
1147          * @see          _remote_file, cache()
1148          */
1149         function get_CacheType()
1150         {
1151                 return $this->_cache_type;
1152         }
1153
1154         /**
1155          * Returns true if cached file was used, otherwise false
1156          *
1157          * @access    public
1158          * @author    Stefan Saasen <s@fase4.com>
1159          * @return    array  $options
1160          * @see          _use_cached_file
1161          */
1162         function is_cachedFile()
1163         {
1164                 return $this->_use_cached_file;
1165         }
1166
1167         /**
1168          * This Method deletes all the cached Files.
1169          *
1170          * Please keep in mind to use this method just as a 'manual garbage collection'
1171          * You should cache the rss/rdf files locally to avoid unnecessary traffic.
1172          * (Both for your visitors and the Publisher)
1173          *
1174          * @access    public
1175          * @author    Stefan Saasen <s@fase4.com>
1176          * @see          _cache_dir
1177          */
1178         function clear_cache()
1179         {
1180                 $dir = dir($this->_cache_dir);
1181                 while($file=$dir->read()) {
1182                         // Exclude directories
1183                         if (is_file($dir->path.$file) && substr($file, -6, 6) != '.cache' && substr($file, -4, 4) != '.log')  {
1184                                 if(!@unlink($dir->path.$file)) {
1185                                         $this->_throw_exception("Unable to unlink ".$dir->path.$file."<br />\n<br />\nException at Line: ".__LINE__ );
1186                                         return false;
1187                                 } // END - if
1188                         } // END - if
1189                 } // END - while
1190                 $dir->close();
1191                 return true;
1192         }   // END clear_cache()
1193
1194         /**
1195          * Cuts the String $string after $str_len and adds '... '
1196          *
1197          * @access   private
1198          * @param    string  $string String to be shortened
1199          * @param    int     $str_len length of the returned String (overall length including '... ')
1200          * @return   string  Cut String
1201          */
1202         function _cut_string( $string, $str_len = '30' )
1203         {
1204                 if(strlen(trim($string))>$str_len) {
1205                         $string = substr( trim($string) , 0, $str_len - 4);
1206                         $string .= ' ...';
1207                 }
1208                 return $string;
1209         }   // END _cut_string()
1210
1211         /**
1212          * this Method implements simple Garbage Collection
1213          *
1214          * @access    private
1215          * @author    Stefan Saasen <s@fase4.com>
1216          * @see          _cache_dir, gc_probability, gc_maxlifetime
1217          */
1218         function _garbage_collection()
1219         {
1220                 srand((double) microtime() * 1000000);
1221                 if (mt_rand(1, 100) <= $this->gc_probability) {
1222                         $dir = dir($this->_cache_dir);
1223                         while($file=$dir->read()) {
1224                                 if (is_file($dir->path.$file) && substr($file, -6, 6) != '.cache' && substr($file, -4, 4) != '.log' && filemtime($dir->path.$file) <= time() - $this->_refresh )  {
1225                                         @unlink($dir->path.$file);
1226                                 } // END - if
1227                         }
1228                         $dir->close();
1229                 }   // END if
1230         }
1231
1232         /* ==== Proxy/Auth methods ==== */
1233
1234         /**
1235          * this method sets a proxy server
1236          *
1237          * @access    public
1238          * @param     string $phost Proxy Host
1239          * @param     string $pport Prox Port
1240          * @author    Marco Kraus <marco.kraus@siemens.com>
1241          */
1242         function set_proxy($phost, $pport)
1243         {
1244                 $this->_use_proxy = true;
1245
1246                 if ($phost != '')
1247                 $this->_phost = $phost;
1248
1249                 if ($pport != '')
1250                 $this->_pport = $pport;
1251         }
1252
1253         /**
1254          * this method sets a proxy server authentification
1255          *
1256          * @access    public
1257          * @param     string $pname Username
1258          * @param     string $ppaswd Password
1259          * @author    Marco Kraus <marco.kraus@siemens.com>
1260          */
1261         function set_proxy_auth( $pname, $ppasswd )
1262         {
1263                 $this->_use_proxy_auth = true;
1264
1265                 if ($pname != '')
1266                 $this->_pname = $pname;
1267
1268                 if ($ppasswd != '')
1269                 $this->_ppasswd = $ppasswd;
1270         }
1271
1272
1273         /**
1274          * gets _remote_file into an array
1275          *
1276          * needed, cause if you use a proxy, you have to open
1277          * a raw-tcp-socket to get the data
1278          *
1279          * @access    private
1280          * @author    Marco Kraus <Marco.Kraus@siemens.com>
1281          * @return array
1282          * @see _use_proxy, cache()
1283          */
1284         function _rdf_data()
1285         {
1286                 if ( $this->_use_proxy == true )
1287                 {
1288                         // we need a raw socket here to connect to proxy
1289                         $fp = fsockopen($this->_phost,$this->_pport);
1290
1291                         if (!$fp) {
1292                                 $this->_throw_exception( $this->_remote_file.' is not available with proxy' );
1293                         } else {
1294                                 if ( $this->_use_proxy_auth == true ) {
1295                                         fputs($fp, "GET ".$this->_remote_file." HTTP/1.0\r\nUser-Agent: Fase4 RDF-Reader/1.40 modified by Quix0r\r\n\r\n");
1296                                 } else {
1297                                         fputs($fp, "GET ".$this->_remote_file." HTTP/1.0\r\nUser-Agent: Fase4 RDF-Reader/1.40 modified by Quix0r\r\nProxy-Authorization: Basic ".base64_encode("$this->_pname:$this->_ppasswd") ."\r\n\r\n");
1298                                 }
1299                         }
1300
1301
1302                         for ( $i = '0'; !feof ($fp) ; $i++)
1303                         {
1304                                 $usable_data[$i] = "";
1305                                 $usable_data[$i] = fgets($fp,4096);
1306
1307                                 // PARSE HEADER ---- first line has to be <?xml, second rdf or rss, and third is blank
1308
1309                                 // strstr did not fit (ask Rasmus why), so we compare each character
1310                                 if ( ($usable_data[$i][0] == '<' ) &&
1311                                 ($usable_data[$i][1] == '?' ) &&
1312                                 ($usable_data[$i][2] == 'x' ) &&
1313                                 ($usable_data[$i][3] == 'm' ) &&
1314                                 ($usable_data[$i][4] == 'l' ) ) {
1315                                         $usable_data[0] = $usable_data[$i]; // save current field
1316                                         $i = 1; // just reset array to start
1317                                 }
1318
1319                                 // there seems to be proxystuff after the <?xml....we delete this
1320                                 if ( (
1321                                 ($usable_data[$i][0] == '<' ) &&
1322                                 ($usable_data[$i][1] == 'r' ) &&
1323                                 ($usable_data[$i][2] == 'd' ) &&
1324                                 ($usable_data[$i][3] == 'f' ) &&
1325                                 ($usable_data[$i][4] == ':' )
1326                                 )
1327                                 ||
1328                                 (
1329                                 ($usable_data[$i][0] == '<' ) &&
1330                                 ($usable_data[$i][1] == 'r' ) &&
1331                                 ($usable_data[$i][2] == 's' ) &&
1332                                 ($usable_data[$i][3] == 's' )
1333                                 )
1334                                 ) {
1335
1336                                         $usable_data[1] = $usable_data[$i]; // save current field
1337                                         $usable_data[2] = "\n";
1338                                         $i = 2; // just reset array to start
1339                                 }
1340                         }
1341
1342                         fclose($fp);
1343                         return $usable_data;
1344                 } else {
1345                         if (substr($this->_remote_file, 0, 7) != 'http://') {
1346                                 $this->_throw_exception( 'Cannot find http:// in '.$this->_remote_file.'!' );
1347                                 return '';
1348                         } else {
1349                                 // Extract host information
1350                                 $host = substr($this->_remote_file, 7);
1351                                 // Extract the GET part
1352                                 $get = '/';
1353                                 if (strpos($host, '/') > 0) {
1354                                         $get = substr($host, strpos($host, '/'));
1355                                         $host = substr($host, 0, strpos($host, '/'));
1356                                 }
1357                                 // Extract port
1358                                 $port = '80';
1359                                 if (strpos($host, ':') > 0) {
1360                                         $port = substr($host, (strpos($host, ':') + 1));
1361                                         $host = substr($host, 0, (strpos($host, ':') - 1));
1362                                 }
1363
1364                                 // Start connection to server
1365                                 $fp = fsockopen($host, $port);
1366                                 if (!$fp) {
1367                                         $this->_throw_exception( $this->_remote_file.' is maybe not available.' );
1368                           return '';
1369                                 }
1370                                 // Repare request line
1371                                 $request = sprintf("GET %s HTTP/1.0\r\nHost: %s\r\nUser-Agent: Fase4 RDF-Reader/1.40 modified by Quix0r\r\n\r\n", $get, $host);
1372                                 // Send request out
1373                                 fputs($fp, $request);
1374                                 $reply = ''; $isContent = false; $dummy = '';
1375                                 // Read reply
1376                                 $i=0;
1377                                 while ( !feof($fp) ) {
1378                                         $read = trim(fgets($fp, 4096));
1379                                         if (substr($read, 0, 5) == '<?xml' || $isContent) {
1380                                                 // Add content
1381                                                 $reply[] = $read;
1382                                                 $isContent = true;
1383                                         } else {
1384                                                 // Put in dummy
1385                                                 $dummy[] = $read;
1386                                         }
1387                                         $i++;
1388                                 }
1389                                 if ((count($dummy) > 0) && (count($reply) == 0) && (!$isContent)) {
1390                                         // Transfer content from dummy
1391                                         $reply = $content;
1392                                 }
1393                                 fclose($fp);
1394                                 //die(htmlentities($reply));
1395                                 return $reply;
1396                         }
1397                 }
1398         }    // END _rdf_data()
1399 }   // END class
1400 ?>