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                 $this->out = str_replace('$', '&#36;', $this->out);
 418
 419                 if (!$return) {
 420                         echo $this->out;
 421                 } else {
 422                         return $this->out;
 423                 }
 424                 $this->_garbage_collection();
 425         }
 426
 427         /**
 428          * With this method you can decide whether to use the normal cache and dynamic display Options or to use a static cache.
 429          *
 430          * 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.
 431          * In this case you can not modify the display settings.
 432          * processing time: ( 1.4792) --> remote file
 433          * processing time: ( 0.0313) --> using 'normal cache' with display Modification turned on.
 434          * processing time: ( 0.0019) --> using 'fast cache'
 435          *
 436          * @access    public
 437          * @author    Stefan Saasen <s@fase4.com>
 438          * @param     string $rdf    RDF File (Location)
 439          * @return    string Displays RDF Content ( using _display() )
 440          * @see          _remote_file, cache()
 441          */
 442         function use_dynamic_display( $bool ) {
 443                 $this->_use_dynamic_display = $bool;
 444                 return true;
 445         }
 446
 447         /**
 448          * This Method avtually parses the XML data.
 449          *
 450          * @access    private
 451          * @author    Stefan Saasen <s@fase4.com>
 452          * @param     string $data    RDF File XML Data
 453          * @see       _clear_Items()
 454          */
 455         function _parse_xRDF( $data ) {
 456                 $this->_clear_Items();
 457                 $xml_parser = xml_parser_create();
 458                 xml_set_object($xml_parser,$this);
 459                 xml_parser_set_option($xml_parser,XML_OPTION_CASE_FOLDING,0);
 460                 xml_set_element_handler($xml_parser, '_startElement', '_endElement');
 461                 xml_set_character_data_handler($xml_parser, '_parseData');
 462                 if (!xml_parse($xml_parser, trim($data))) {
 463                         $this->_throw_exception(sprintf("XML error: %s at line %d",
 464                         xml_error_string(xml_get_error_code($xml_parser)),
 465                         xml_get_current_line_number($xml_parser)).'<br /><br />Exception in function parse_RDF().');
 466                 } // END - if
 467                 xml_parser_free($xml_parser);
 468         }
 469
 470
 471         /**
 472          * This Methods allows you to set the Refresh Time
 473          *
 474          * @access    public
 475          * @author    Stefan Saasen <s@fase4.com>
 476          * @param     int $seconds time files will be cached (in seconds).
 477          * @return    boolean
 478          * @see       _refresh
 479          */
 480         function set_refresh( $seconds ) {
 481                 $this->_refresh = (time() - $seconds);
 482                 return true;
 483         }
 484
 485         function set_salt( $saltPara ) {
 486                 $this->salt = $saltPara;
 487                 return true;
 488         }
 489
 490         /**
 491          * This Methods allows you to set the No. of <item>s to display
 492          *
 493          * @access    public
 494          * @param     int $int No of max <item>s
 495          * @author    Stefan Saasen <s@fase4.com>
 496          * @return       boolean
 497          * @see          _max_count, _endElement()
 498          */
 499         function set_max_item( $int )
 500         {
 501                 $this->_max_count = $int;
 502                 return true;
 503         }
 504
 505         /**
 506          * This Methods allows you to set the Cache Directory
 507          *
 508          * @access    public
 509          * @author    Stefan Saasen <s@fase4.com>
 510          * @param     string $dir Path to Directory.
 511          * @return       boolean
 512          * @see          _cache_dir
 513          */
 514         function set_CacheDir( $dir )
 515         {
 516                 if(substr($dir, -1) != '/') {
 517                         $dir = $dir.'/';
 518                 }
 519                 $this->_cache_dir = $dir;
 520         }
 521
 522         /**
 523          * This Method displays Error Messages and terminates the Execution of the Script
 524          *
 525          * @access    private
 526          * @param     string $msg Message to display on failure
 527          * @author    Stefan Saasen <s@fase4.com>
 528          */
 529         function _throw_exception( $msg )
 530         {
 531                 $this->out .= "<div style=\"font-family: verdana, helvetica, arial, sans-serif;font-size:11px; color: #6699cc;margin-top:10px;margin-bottom:10px;\" align=\"center\">fase4 RDF Error: ".$msg."</div>";
 532                 return true;
 533         }
 534
 535         /**
 536          * This Method clears the Array containig the Items.
 537          *
 538          * @access    private
 539          * @author    Stefan Saasen <s@fase4.com>
 540          * @see       _item
 541          */
 542         function _clear_Items( ) {
 543                 $this->_item = array(
 544                         'title'         => '',
 545                         'link'          => '',
 546                         'description'   => '',
 547                         'url'           => '',
 548                         'language'      => '',
 549                         'pubDate'       => '',
 550                         'lastBuildDate' => '',
 551                         'width'         => '',
 552                         'height'        => ''
 553                 );
 554         }
 555         /**
 556          * This Method clears the Array containig the Channel Items.
 557          *
 558          * @access    private
 559          * @author    Stefan Saasen <s@fase4.com>
 560          * @see       _item
 561          */
 562         function _clear_cItems( ) {
 563                 $this->_citem = array(
 564                         'title'          => '',
 565                         'link'           => '',
 566                         'description'    => '',
 567                         'url'            => '',
 568                         'language'       => '',
 569                         'copyright'      => '',
 570                         'managingEditor' => '',
 571                         'webMaster'      => '',
 572                         'pubDate'        => '',
 573                         'lastBuildDate'  => '',
 574                         'category'       => '',
 575                         'generator'      => '',
 576                         'docs'           => '',
 577                         'cloud'          => '',
 578                         'ttl'            => '',
 579                         'image'          => '',
 580                         'textinput'      => '',
 581                         'skipHours'      => '',
 582                         'skipDays'       => '',
 583                         'sitelink'       => '',
 584                         'refid'          => '',
 585                         'reflink'        => '',
 586                 );
 587         }
 588
 589         /**
 590          * XML Parser Start Element Handler
 591          *
 592          * @access    private
 593          * @author    Stefan Saasen <s@fase4.com>
 594          * @param     mixed  $parser a reference to the XML parser calling the handler.
 595          * @param     string $name contains the name of the element for which this handler is called.
 596          * @param     string $attrs contains an associative array with the element's attributes (if any).
 597          * @see          _get_ChannelData(), _clear_Items(), _type, _parse_mode, _depth, _tags, _cdepth, _ctags
 598          */
 599         function _startElement($parser, $name, $attrs) {
 600                 // We have to determine, which type of xml data we have to parse
 601                 if($name == 'rss') {
 602                         $this->_type = 'rss';
 603                 } elseif($name == 'rdf:RDF' OR $name == 'rdf') {
 604                         $this->_type = 'rdf';
 605                 }
 606
 607
 608                 if ( $name == 'channel' AND $this->_type != 'rdf' ) {
 609                         $this->_parse_mode = 'channel';
 610                 } elseif ( ($name=='item')
 611                 ||($name=='image')
 612                 ||($name=='textinput')
 613                 ||(($name=='channel') && ($this->_type != 'rss')) ) {
 614                         if($this->_parse_mode=='channel') {
 615                                 $this->_get_ChannelData( $parser );
 616                         }
 617                         $this->_parse_mode = 'all';
 618                 }
 619
 620                 if( !isset( $this->_depth[$this->get_parser_id($parser)] ) ) {
 621                         $this->_depth[$this->get_parser_id($parser)] = '0';
 622                 }
 623                 $this->_depth[$this->get_parser_id($parser)]++;
 624                 array_push($this->_tags, $name);
 625
 626                 if( !isset( $this->_cdepth[$this->get_parser_id($parser)] ) ) {
 627                         $this->_cdepth[$this->get_parser_id($parser)] = '0';
 628                 }
 629                 $this->_cdepth[$this->get_parser_id($parser)]++;
 630                 array_push($this->_ctags, $name);
 631         }   // END _startElement()
 632
 633         /**
 634          * Retrives the Channel Data in <rss> File
 635          *
 636          * @access    private
 637          * @author    Stefan Saasen <s@fase4.com>
 638          * @param     mixed  $parser a reference to the XML parser calling the handler.
 639          * @see          _output, _display_opt, _citem
 640          */
 641         function _get_ChannelData( $parser )
 642         {
 643                 $this->_citem['link'] = trim($this->_citem['link']);
 644                 if (($this->_display_opt['sitelink'] == $this->_citem['link']) && (!empty($this->_display_opt['reflink'])) && (!empty($this->_display_opt['refid'])))
 645                 {
 646                         $this->_citem['link'] .= $this->_display_opt['reflink'].$this->_display_opt['refid'];
 647                 }
 648
 649                 if( empty($this->_display_opt['channel']) OR
 650                 $this->_display_opt['channel'] != 'hidden') {
 651                         $this->_output .= "<tr><td>\n";
 652                         $this->_output .= "<table border=\"0\" width=\"100%\" class=\"fase4_rdf_meta\" cellspacing=\"5\" cellpadding=\"2\">\n";
 653                         $this->_output .= "<tr><td class=\"fase4_rdf_main_title\"><div class=\"fase4_rdf_main_title\">".htmlspecialchars($this->_citem['title'])."</div></td></tr>\n";
 654                         $this->_output .= "<tr><td class=\"fase4_rdf\">".strip_tags($this->_citem['description'], '<a>, <img>')."</td></tr>\n";
 655                         $this->_output .= "<tr><td>&nbsp;</td></tr>\n";
 656                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 657                         if(isset($this->_display_opt['build']) && $this->_display_opt['build'] != 'hidden') {
 658                                 if($this->_citem['lastBuildDate']){$this->_output .= 'build: '. $this->_citem['lastBuildDate'].'<br />';}
 659                         }
 660                         if(isset($this->_display_opt['cache_update']) && $this->_display_opt['cache_update'] != 'hidden' && ( $_update = $this->get_cache_update_time()) ) {
 661                                 $this->_output .= 'cache update: '.$_update."<br />\n";
 662                         }
 663                         $this->_output .= "<a href=\"".$this->_citem['link']."\" ";
 664                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 665                         $this->_output .= ">".$this->_cut_string($this->_citem['link']) . '</a>';
 666                         $this->_output .= "</td></tr>\n";
 667                         $this->_output .= "<tr><td><hr noshade width=\"100%\" size=\"1\"></td></tr>\n";
 668                         $this->_output .= "</table></td></tr>";
 669                 }
 670                 $this->_array_channel = array(
 671                         'title'         => $this->_citem['title'],
 672                         'link'          => $this->_citem['link'],
 673                         'description'   => $this->_citem['description'],
 674                         'lastBuildDate' => $this->_citem['lastBuildDate']);
 675         }
 676
 677         /**
 678          * XML Parser End Element Handler
 679          *
 680          * @access    private
 681          * @author    Stefan Saasen <s@fase4.com>
 682          * @param     mixed  $parser a reference to the XML parser calling the handler.
 683          * @param     string $name contains the name of the element for which this handler is called.
 684          * @see          _clear_Items(), _type, _parse_mode, _depth, _tags, _cdepth, _ctags, _item, _output, _display_opt
 685          */
 686         function _endElement($parser, $name) {
 687                 array_pop($this->_tags);
 688                 $this->_depth[$this->get_parser_id($parser)]--;
 689                 array_pop($this->_ctags);
 690                 $this->_cdepth[$this->get_parser_id($parser)]--;
 691                 $this->_item['link'] = trim($this->_item['link']);
 692                 if ((!empty($this->_display_opt['refid'])) && (!empty($this->_item['link'])))
 693                 {
 694                         if (!isInString('refid=', $this->_item['link'])) $this->_item['link'] .= '?refid=' . $this->_display_opt['refid'];
 695                 }
 696                 switch ($name) {
 697                         case 'item':
 698                                 if(empty($this->_max_count) OR $this->_item_count < $this->_max_count) {
 699                                         if($this->_item['title'] != $this->_item['description']
 700                                         AND $this->_item['description']) {
 701
 702                                                 // word-wrapping added by Roland Haeder <webmaster@mxchange.org>
 703                                                 if (($this->_word_wrap > 0) && (strlen($this->_item['description']) > $this->_word_wrap))
 704                                                 {
 705                                                         // Switch off _use_nl2br
 706                                                         $this->_use_nl2br = false;
 707                                                         // First remove all \n
 708                                                         $this->_item['description'] = str_replace('\n', ' ', $this->_item['description']);
 709                                                         // Wrap with <br />\n
 710                                                         $this->_item['description'] = wordwrap($this->_item['description'], $this->_word_wrap, "*<br />\n");
 711                                                 }
 712                                                 elseif (($this->_word_wrap == '0') && (!$this->_use_nl2br))
 713                                                 {
 714                                                         // Strip tags out instead when word-wrap is disabled
 715                                                         $this->_item['description'] = strip_tags($this->_item['description'], '<a>, <img>');
 716                                                 }
 717
 718                                                 // nl2br added by Roland Haeder <webmaster@mxchange.org>
 719                                                 if ($this->_use_nl2br) $this->_item['description'] = nl2br($this->_item['description']);
 720
 721                                                 $this->_output .= "<tr><td class=\"fase4_rdf_title\"><div class=\"fase4_rdf_title\"><a class=\"fase4_rdf_title\" href=\"".$this->_item['link']."\" ";
 722                                                 if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 723                                                 $this->_output .= ">".strip_tags($this->_item['title'], '<a>, <img>').'</a> ('.$this->_item['pubDate'].")</div></td></tr>\n";
 724                                                 $this->_output .= "<tr><td class=\"fase4_rdf\">".$this->_item['description']."</td></tr>\n";
 725                                                 // we just display the <hr> if there is a description
 726                                                 $this->_output .= "<tr><td><hr noshade=\"noshade\" size=\"1\" /></td></tr>\n";
 727                                         } else {
 728                                                 $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 729                                                 $this->_output .= "<a href=\"".$this->_item["link"]."\" ";
 730                                                 if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 731                                                 $this->_output .= ">".$this->_item["title"]."</a></td></tr>\n";
 732                                         }
 733
 734                                         $this->_array_item[] = array(
 735                                                 'title'       => $this->_item['title'],
 736                                                 'link'        => $this->_item['link'],
 737                                                 'description' => $this->_item['description']
 738                                         );
 739
 740                                         ++$this->_item_count;
 741                                 }
 742                                 $this->_clear_Items();
 743                                 break;
 744
 745                         case 'image':
 746                                 if(isset($this->_display_opt['image']) && ($this->_display_opt['image'] != 'hidden') && $this->_item['url']) {
 747                                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 748                                         $this->_output .= "<a href=\"".$this->_item['link']."\" ";
 749                                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 750                                         $this->_output .= "><img src=\"".$this->_item['url']."\"";
 751                                         if(isset($this->_item['width']) && isset($this->_item['height'])) {
 752                                                 $this->_output .= " width=\"".$this->_item['width']."\" height=\"".$this->_item['height']."\"";
 753                                         }
 754                                         $this->_output .= " alt=\"".$this->_item['title']."\" border=\"0\" /></a></td></tr>\n";
 755
 756                                         $this->_array_image[] = array(
 757                                                 'url'    => $this->_item['url'],
 758                                                 'link'   => $this->_item['link'],
 759                                                 'width'  => $this->_item['width'],
 760                                                 'height' => $this->_item['height']
 761                                         );
 762                                         $this->_clear_Items();
 763                                 } elseif( isset($this->_display_opt['image'] ) && ($this->_display_opt['image'] == 'hidden') ) {
 764                                         $this->_clear_Items();
 765                                 }
 766
 767                                 break;
 768
 769                         case 'channel':
 770                                 if(isset($this->_display_opt['channel']) AND $this->_display_opt['channel'] != 'hidden' AND $this->_item['title'] != '') {
 771                                         $this->_output .= "<tr><td>\n";
 772                                         $this->_output .= "<table border=\"0\" width=\"100%\" class=\"fase4_rdf_meta\" cellspacing=\"5\" cellpadding=\"2\">\n";
 773                                         $this->_output .= "<tr><td class=\"fase4_rdf\"><div class=\"fase4_rdf_title\">".htmlspecialchars($this->_item['title'])."</div></td></tr>\n";
 774                                         $this->_output .= "<tr><td class=\"fase4_rdf\">".strip_tags($this->_item['description'], '<a>, <img>')."</td></tr>\n";
 775                                         $this->_output .= "<tr><td>&nbsp;</td></tr>\n";
 776                                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 777                                         if($this->_display_opt['build'] != 'hidden') {
 778                                                 if($this->_item['lastBuildDate']){$this->_output .= 'build: '. $this->_item['lastBuildDate'].'<br />';}
 779                                         }
 780                                         if($this->_display_opt['cache_update'] != 'hidden' && ( $_update = $this->get_cache_update_time()) ) {
 781                                                 $this->_output .= 'cache update: '.$_update."<br />\n";
 782                                         }
 783                                         $this->_output .= "<a href=\"".$this->_item['link']."\" ";
 784                                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 785                                         $this->_output .= ">".$this->_cut_string($this->_item['link'])."</a>\n";
 786                                         $this->_output .= "</td></tr>\n";
 787                                         $this->_output .= "</table></td></tr>\n";
 788                                 }
 789                                 $this->_array_channel = array(
 790                                         'title'         => $this->_item['title'],
 791                                         'link'          => $this->_item['link'],
 792                                         'description'   => $this->_item['description'],
 793                                         'lastBuildDate' => $this->_item['lastBuildDate']
 794                                 );
 795                                 $this->_clear_Items();
 796                                 $this->_clear_cItems();
 797                                 break;
 798
 799                         case 'textinput':
 800                                 if(isset($this->_display_opt['textinput']) && ($this->_display_opt['textinput'] != 'hidden') && $this->_item['name'] && $this->_item['link']) {
 801                                         $this->_output .= "<tr><td class=\"fase4_rdf\">\n";
 802                                         $this->_output .= "<form accept-charset=\"UTF-8\" action=\"".$this->_item['link']."\" ";
 803                                         if(isset($this->_link_target)) { $this->_output .= "target=\"".$this->_link_target."\" "; }
 804                                         $this->_output .= "method=\"get\">\n";
 805                                         $this->_output .= "<div class=\"fase4_rdf_title\">".$this->_item['title']."</div>";
 806                                         $this->_output .= strip_tags($this->_item['description'], '<a>, <img>')."<br /><br />\n";
 807                                         $this->_output .= "<input class=\"fase4_rdf_input\" type=\"text\" name=\"".$this->_item['name']."\">&nbsp;\n";
 808                                         $this->_output .= "<input class=\"fase4_rdf_input\" type=\"submit\" value=\"go\">";
 809                                         $this->_output .= "</form>\n";
 810                                         $this->_output .= "</td></tr>\n";
 811                                         $this->_array_textinput = array(
 812                                                 'title'       => $this->_item['title'],
 813                                                 'name'        => $this->_item['name'],
 814                                                 'link'        => $this->_item['link'],
 815                                                 'description' => $this->_item['description']
 816                                         );
 817                                         $this->_clear_Items();
 818                                 } elseif( isset($this->_display_opt['textinput']) && ($this->_display_opt['textinput'] == 'hidden') ) {
 819                                         $this->_clear_Items();
 820                                 }
 821
 822                                 break;
 823                 }
 824         }
 825
 826         /**
 827          * This Method returns the data from the <channel /> paragraph.
 828          *
 829          * @access    public
 830          * @author    Stefan Saasen <s@fase4.com>
 831          * @return    array
 832          * @see       _array_channel
 833          */
 834         function get_array_channel( )
 835         {
 836                 return $this->_array_channel;
 837         }
 838
 839         /**
 840          * This Method returns the data from each <item /> paragraph.
 841          *
 842          * @access    public
 843          * @author    Stefan Saasen <s@fase4.com>
 844          * @return    array
 845          * @see       _array_item
 846          */
 847         function get_array_item( )
 848         {
 849                 return $this->_array_item;
 850         }
 851
 852         /**
 853          * This Method returns the data from <textinput />.
 854          *
 855          * @access    public
 856          * @author    Stefan Saasen <s@fase4.com>
 857          * @return    array
 858          * @see       _array_textinput
 859          */
 860         function get_array_textinput( )
 861         {
 862                 return $this->_array_textinput;
 863         }
 864
 865         /**
 866          * Getter for parser id from resource
 867          *
 868          * @access   private
 869          * @author   Roland Haeder <webmaster@mxchange.org>
 870          * @return   int
 871          */
 872         function get_parser_id ($parser) {
 873                 // Default is zero
 874                 $id = '0';
 875
 876                 // Is it a resource?
 877                 if (is_resource($parser)) {
 878                         // Cast the resource into id
 879                         $id = (int) $parser;
 880                 } // END - if
 881
 882                 // Return the id
 883                 return $id;
 884         }
 885
 886         /**
 887          * This Method returns the data from <image />.
 888          *
 889          * @access    public
 890          * @author    Stefan Saasen <s@fase4.com>
 891          * @return    array
 892          * @see       _array_image
 893          */
 894         function get_array_image( )
 895         {
 896                 return $this->_array_image;
 897         }
 898
 899         /**
 900          * XML Parser Data Handler
 901          *
 902          * @access    private
 903          * @author    Stefan Saasen <s@fase4.com>
 904          * @param     mixed  $parser a reference to the XML parser calling the handler.
 905          * @param     string $text contains the character data as a string.
 906          * @see          _parse_mode, _item, _tags, _depth, _citem, _ctags, _cdepth
 907          */
 908         function _parseData($parser, $text)
 909         {
 910                 // Deocing mode added by Roland Haeder <webmaster@mxchange.org>
 911                 switch ($this->_decoding_mode)
 912                 {
 913                         case 'utf8_decode':
 914                                 $text = utf8_decode($text);
 915                                 break;
 916
 917                         case 'htmlentities':
 918                                 $text = htmlentities($text);
 919                                 break;
 920                 }
 921
 922                 $clean = preg_replace("/\s/", "", $text);
 923                 if ($clean) {
 924                         $text = preg_replace("/^\s+/", "", $text)."\n";
 925                         if($this->_parse_mode == 'all') {
 926                                 if ( isset($this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]]) &&
 927                                 $this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]] ) {
 928                                         $this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]] .= $text;
 929                                 } else {
 930                                         $this->_item[$this->_tags[$this->_depth[$this->get_parser_id($parser)]]] = $text;
 931                                 }
 932                         } elseif (isset($this->_parse_mode) && $this->_parse_mode == 'channel') {
 933                                 if ( isset($this->_citem[$this->_ctags[$this->_cdepth[$this->get_parser_id($parser)]]]) ) {
 934                                         $this->_citem[$this->_ctags[$this->_cdepth[$this->get_parser_id($parser)]]] .= $text;
 935                                 } else {
 936                                         $this->_citem[$this->_ctags[$this->_cdepth[$this->get_parser_id($parser)]]] = $text;
 937                                 }
 938                         }
 939                 }
 940         }
 941
 942         /**
 943          * This Method allows you to choose if specific Parameters are displayed or not. These are:
 944          * image, channel, textinput, build and cache_update. If set to "hidden" those elements won't be displayed.
 945          *
 946          * @access    public
 947          * @author    Stefan Saasen <s@fase4.com>
 948          * @param     array  $options
 949          * @see          _display_opt
 950          */
 951         function set_Options( $options = '' )
 952         {
 953                 if(is_array( $options )) {
 954                         $this->_display_opt = $options;
 955                         return true;
 956                 } else {
 957                         unset($this->_display_opt);
 958                         return false;
 959                 }
 960         }
 961
 962         /**
 963          * This Method allows you to define the width of the table that holds the representation of the rdf/rss file.
 964          *
 965          * @access    public
 966          * @author    Stefan Saasen <s@fase4.com>
 967          * @param     int  $width  attribute width in tag <table>
 968          * @see          _table_width
 969          */
 970         function set_table_width( $width = 400 )
 971         {
 972                 $this->_table_width = $width;
 973                 return true;
 974         }
 975
 976         /**
 977          * This Method returns an assocative Array with available Options.
 978          *
 979          * The Keys are the Name of the Options to be set.
 980          * The Values are  short Description of available Options.
 981          *
 982          * @access    public
 983          * @author    Stefan Saasen <s@fase4.com>
 984          * @return    array  $options
 985          * @see          _display_opt
 986          */
 987         function get_Options() {
 988                 $options = array(
 989                         'image'        => "If 'image' is set to \"hidden\" no image provided by the RDF Publisher will be displayed.",
 990                         '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",
 991                         'textinput'    => "If set to \"hidden\" no Input Form will be displayed",
 992                         'build'        => "If set to \"hidden\" the Build Date (if provided) of the RDF File will not be displayed",
 993                         'cache_update' => "If set to \"hidden\" the Update Date/Time of the cached Rdf File will not be displayed"
 994                 );
 995                 return $options;
 996         }
 997
 998         /**
 999          * This Method returns the Content of the RDF File in one string. The String actually holds the whole XML Document.
1000          *
1001          * @access    public
1002          * @author    Stefan Saasen <s@fase4.com>
1003          * @param     string $rdf    RDF File (Location)
1004          * @return    string XML Presentation of parsed RDF File
1005          * @see          _cached_file, _remote_file, _cache_dir, _refresh, _update_cache()
1006          */
1007         function cache()
1008         {
1009                 // checks if the cache directory already exists
1010                 // if not, the cache directory will be created
1011                 if(!$this->_cache_dir_ok) {
1012                         $this->_create_cache_dir();
1013                 }
1014                 if($this->_use_dynamic_display == true) {
1015                         $this->_cached_file = md5('dynamic'.$this->salt.$this->_remote_file) . '.cache';
1016                         $this->_cache_type = 'normal';
1017                 } else {
1018                         $this->_cached_file = md5($this->salt.$this->_remote_file) . '.cache';
1019                         $this->_cache_type = 'fast';
1020                 }
1021
1022                 $_cache_f = $this->_cache_dir.$this->_cached_file;
1023
1024                 if ( (!file_exists($_cache_f)) || (filemtime($_cache_f) < $this->_refresh) || (filesize($_cache_f) == 0)) {
1025                         // We have to parse the remote file
1026                         $this->_use_cached_file = false;
1027                         // --> we want to provide proper Information for Use in
1028                         // get_cache_update_time()
1029                         clearstatcache();
1030                         if($this->_use_dynamic_display == true) {
1031                                 $_rdf = implode(' ', $this->_rdf_data()); // -> proxy
1032                                 if(!$_rdf) {
1033                                         $this->_throw_exception( $this->_remote_file.' is not available' );
1034                                 }
1035                                 $this->_parse_xRDF( $_rdf );
1036                                 $this->_update_cache( $_rdf );
1037                                 $data = $this->_output;
1038                         } else {
1039                                 $_rdf = implode(' ', $this->_rdf_data()); // -> proxy
1040                                 if(!$_rdf) {
1041                                         $this->_throw_exception( $this->_remote_file.' is not available' );
1042                                 }
1043                                 $this->_parse_xRDF( $_rdf );
1044                                 $this->_update_cache( $this->_output );
1045                                 $data = $this->_output;
1046                         }
1047                 } else {
1048                         // we can use the cached file
1049                         $this->_use_cached_file = true;
1050                         if($this->_use_dynamic_display == true) {
1051                                 $this->_parse_xRDF( implode(' ', file($_cache_f)) );
1052                                 $data = $this->_output;
1053                         } else {
1054                                 $data = implode(' ', file($_cache_f));
1055                         }
1056                 }
1057                 return trim($data);
1058         }   // END cache()
1059
1060         /**
1061          * This Methods creates the Cache Directory if the specified Directory does not exist.
1062          *
1063          * @access    private
1064          * @author    Stefan Saasen <s@fase4.com>
1065          * @param     string $dir Path to Directory.
1066          * @return       boolean
1067          * @see          _cache_dir, _cache_dir_ok
1068          */
1069         function _create_cache_dir()
1070         {
1071                 $path = '';
1072                 if(!@is_dir($this->_cache_dir)) {
1073                         $arr = explode('/', $this->_cache_dir);
1074                         $c = count($arr);
1075                         if($arr[0]=='') {
1076                                 $path = '/';
1077                         }
1078                         for($i = '0';$i<$c;$i++) {
1079                                 if($arr[$i]!='') {
1080                                         $path .= $arr[$i].'/';
1081                                         if(!@is_dir($path)) {
1082                                                 if(!@mkdir($path, 0777)) {
1083                                                         $this->_throw_exception("failed to create directory:<b>".$this->_cache_dir."</b>.<br /><br />Exception on Line: ".__LINE__);
1084                                                         return false;
1085                                                 }
1086                                         }
1087                                 }
1088                         }
1089                         $this->_cache_dir_ok = true;
1090                         return true;
1091                 } else {
1092                         $this->_cache_dir_ok = true;
1093                         return true;
1094                 }
1095         }   // END _create_cache_dir()
1096
1097         /**
1098          * This Method updates the cached RDF Files and synchronises them with their remote Counterparts.
1099          *
1100          * @access    private
1101          * @author    Stefan Saasen <s@fase4.com>
1102          * @param     string $rdf    RDF File (Location)
1103          * @see          _cache_dir, _cached_file, _throw_exception()
1104          */
1105         function _update_cache( $content = '' )
1106         {
1107                 $_local = @fopen( $this->_cache_dir.$this->_cached_file, 'w' );
1108                 if(!$_local) {
1109                         $this->_throw_exception( 'Cannot open '.$this->_cached_file.'<br /><br />Exception at Line: '.__LINE__ );
1110                         return false;
1111                 }
1112                 if (fwrite( $_local, $content) === false) {
1113                         $this->_throw_exception( 'Cannot write to '.$this->_cached_file.'<br /<br />Exeception at Line: '.__LINE__);
1114                         return false;
1115                 }
1116                 fclose( $_local );
1117                 @chmod( $this->_cache_dir.$this->_cached_file, 0666);
1118                 return true;
1119         }   // END _update_cache()
1120
1121         /**
1122          * This Method returns the Date/Time of last Cache Update of the actually parsed RDF File.
1123          *
1124          * @access    public
1125          * @author    Stefan Saasen <s@fase4.com>
1126          * @return       string Date/Time of last Update
1127          * @see          _cache_dir, _cached_file
1128          */
1129         function get_cache_update_time()
1130         {
1131                 return (file_exists($this->_cache_dir.$this->_cached_file))?date('d.m.Y H:i:s', filemtime($this->_cache_dir.$this->_cached_file)):'Cachemiss';
1132         }   // END get_cache_update_time()
1133
1134         /**
1135          * This Method returns the Type of Cache that was used ('normal' or 'fast')
1136          *
1137          * @access    public
1138          * @author    Stefan Saasen <s@fase4.com>
1139          * @param     string $rdf    RDF File (Location)
1140          * @return    string Displays RDF Content ( using _display() )
1141          * @see          _remote_file, cache()
1142          */
1143         function get_CacheType()
1144         {
1145                 return $this->_cache_type;
1146         }
1147
1148         /**
1149          * Returns true if cached file was used, otherwise false
1150          *
1151          * @access    public
1152          * @author    Stefan Saasen <s@fase4.com>
1153          * @return    array  $options
1154          * @see          _use_cached_file
1155          */
1156         function is_cachedFile()
1157         {
1158                 return $this->_use_cached_file;
1159         }
1160
1161         /**
1162          * This Method deletes all the cached Files.
1163          *
1164          * Please keep in mind to use this method just as a 'manual garbage collection'
1165          * You should cache the rss/rdf files locally to avoid unnecessary traffic.
1166          * (Both for your visitors and the Publisher)
1167          *
1168          * @access    public
1169          * @author    Stefan Saasen <s@fase4.com>
1170          * @see          _cache_dir
1171          */
1172         function clear_cache()
1173         {
1174                 $dir = dir($this->_cache_dir);
1175                 while($file=$dir->read()) {
1176                         // Exclude directories
1177                         if (is_file($dir->path.$file) && substr($file, -6, 6) != '.cache' && substr($file, -4, 4) != '.log')  {
1178                                 if(!@unlink($dir->path.$file)) {
1179                                         $this->_throw_exception("Unable to unlink ".$dir->path.$file."<br />\n<br />\nException at Line: ".__LINE__ );
1180                                         return false;
1181                                 } // END - if
1182                         } // END - if
1183                 } // END - while
1184                 $dir->close();
1185                 return true;
1186         }   // END clear_cache()
1187
1188         /**
1189          * Cuts the String $string after $str_len and adds '... '
1190          *
1191          * @access   private
1192          * @param    string  $string String to be shortened
1193          * @param    int     $str_len length of the returned String (overall length including '... ')
1194          * @return   string  Cut String
1195          */
1196         function _cut_string( $string, $str_len = '30' )
1197         {
1198                 if(strlen(trim($string))>$str_len) {
1199                         $string = substr( trim($string) , 0, $str_len - 4);
1200                         $string .= ' ...';
1201                 }
1202                 return $string;
1203         }   // END _cut_string()
1204
1205         /**
1206          * this Method implements simple Garbage Collection
1207          *
1208          * @access    private
1209          * @author    Stefan Saasen <s@fase4.com>
1210          * @see          _cache_dir, gc_probability, gc_maxlifetime
1211          */
1212         function _garbage_collection()
1213         {
1214                 srand((double) microtime() * 1000000);
1215                 if (mt_rand(1, 100) <= $this->gc_probability) {
1216                         $dir = dir($this->_cache_dir);
1217                         while($file=$dir->read()) {
1218                                 if (is_file($dir->path.$file) && substr($file, -6, 6) != '.cache' && substr($file, -4, 4) != '.log' && filemtime($dir->path.$file) <= time() - $this->_refresh )  {
1219                                         @unlink($dir->path.$file);
1220                                 } // END - if
1221                         }
1222                         $dir->close();
1223                 }   // END if
1224         }
1225
1226         /* ==== Proxy/Auth methods ==== */
1227
1228         /**
1229          * this method sets a proxy server
1230          *
1231          * @access    public
1232          * @param     string $phost Proxy Host
1233          * @param     string $pport Prox Port
1234          * @author    Marco Kraus <marco.kraus@siemens.com>
1235          */
1236         function set_proxy($phost, $pport)
1237         {
1238                 $this->_use_proxy = true;
1239
1240                 if ($phost != '')
1241                 $this->_phost = $phost;
1242
1243                 if ($pport != '')
1244                 $this->_pport = $pport;
1245         }
1246
1247         /**
1248          * this method sets a proxy server authentification
1249          *
1250          * @access    public
1251          * @param     string $pname Username
1252          * @param     string $ppaswd Password
1253          * @author    Marco Kraus <marco.kraus@siemens.com>
1254          */
1255         function set_proxy_auth( $pname, $ppasswd )
1256         {
1257                 $this->_use_proxy_auth = true;
1258
1259                 if ($pname != '')
1260                 $this->_pname = $pname;
1261
1262                 if ($ppasswd != '')
1263                 $this->_ppasswd = $ppasswd;
1264         }
1265
1266
1267         /**
1268          * gets _remote_file into an array
1269          *
1270          * needed, cause if you use a proxy, you have to open
1271          * a raw-tcp-socket to get the data
1272          *
1273          * @access    private
1274          * @author    Marco Kraus <Marco.Kraus@siemens.com>
1275          * @return array
1276          * @see _use_proxy, cache()
1277          */
1278         function _rdf_data()
1279         {
1280                 if ( $this->_use_proxy == true )
1281                 {
1282                         // we need a raw socket here to connect to proxy
1283                         $fp = fsockopen($this->_phost,$this->_pport);
1284
1285                         if (!$fp) {
1286                                 $this->_throw_exception( $this->_remote_file.' is not available with proxy' );
1287                         } else {
1288                                 if ( $this->_use_proxy_auth == true ) {
1289                                         fputs($fp, "GET ".$this->_remote_file." HTTP/1.0\r\nUser-Agent: Fase4 RDF-Reader/1.40 modified by Quix0r\r\n\r\n");
1290                                 } else {
1291                                         fputs($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");
1292                                 }
1293                         }
1294
1295
1296                         for ( $i = '0'; !feof ($fp) ; $i++)
1297                         {
1298                                 $usable_data[$i] = "";
1299                                 $usable_data[$i] = fgets($fp,4096);
1300
1301                                 // PARSE HEADER ---- first line has to be <?xml, second rdf or rss, and third is blank
1302
1303                                 // strstr did not fit (ask Rasmus why), so we compare each character
1304                                 if ( ($usable_data[$i][0] == '<' ) &&
1305                                 ($usable_data[$i][1] == '?' ) &&
1306                                 ($usable_data[$i][2] == 'x' ) &&
1307                                 ($usable_data[$i][3] == 'm' ) &&
1308                                 ($usable_data[$i][4] == 'l' ) ) {
1309                                         $usable_data[0] = $usable_data[$i]; // save current field
1310                                         $i = 1; // just reset array to start
1311                                 }
1312
1313                                 // there seems to be proxystuff after the <?xml....we delete this
1314                                 if ( (
1315                                 ($usable_data[$i][0] == '<' ) &&
1316                                 ($usable_data[$i][1] == 'r' ) &&
1317                                 ($usable_data[$i][2] == 'd' ) &&
1318                                 ($usable_data[$i][3] == 'f' ) &&
1319                                 ($usable_data[$i][4] == ':' )
1320                                 )
1321                                 ||
1322                                 (
1323                                 ($usable_data[$i][0] == '<' ) &&
1324                                 ($usable_data[$i][1] == 'r' ) &&
1325                                 ($usable_data[$i][2] == 's' ) &&
1326                                 ($usable_data[$i][3] == 's' )
1327                                 )
1328                                 ) {
1329
1330                                         $usable_data[1] = $usable_data[$i]; // save current field
1331                                         $usable_data[2] = "\n";
1332                                         $i = 2; // just reset array to start
1333                                 }
1334                         }
1335
1336                         fclose($fp);
1337                         return $usable_data;
1338                 } else {
1339                         if (substr($this->_remote_file, 0, 7) != 'http://') {
1340                                 $this->_throw_exception( 'Cannot find http:// in '.$this->_remote_file.'!' );
1341                                 return '';
1342                         } else {
1343                                 // Extract host information
1344                                 $host = substr($this->_remote_file, 7);
1345                                 // Extract the GET part
1346                                 $get = '/';
1347                                 if (strpos($host, '/') > 0) {
1348                                         $get = substr($host, strpos($host, '/'));
1349                                         $host = substr($host, 0, strpos($host, '/'));
1350                                 }
1351                                 // Extract port
1352                                 $port = '80';
1353                                 if (strpos($host, ':') > 0) {
1354                                         $port = substr($host, (strpos($host, ':') + 1));
1355                                         $host = substr($host, 0, (strpos($host, ':') - 1));
1356                                 }
1357
1358                                 // Start connection to server
1359                                 $fp = fsockopen($host, $port);
1360                                 if (!$fp) {
1361                                         $this->_throw_exception( $this->_remote_file.' is maybe not available.' );
1362                           return '';
1363                                 }
1364                                 // Repare request line
1365                                 $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, $host);
1366                                 // Send request out
1367                                 fputs($fp, $request);
1368                                 $reply = ''; $isContent = false; $dummy = '';
1369                                 // Read reply
1370                                 $i=0;
1371                                 while ( !feof($fp) ) {
1372                                         $read = trim(fgets($fp, 4096));
1373                                         if (substr($read, 0, 5) == '<?xml' || $isContent) {
1374                                                 // Add content
1375                                                 $reply[] = $read;
1376                                                 $isContent = true;
1377                                         } else {
1378                                                 // Put in dummy
1379                                                 $dummy[] = $read;
1380                                         }
1381                                         $i++;
1382                                 }
1383                                 if ((count($dummy) > 0) && (count($reply) == 0) && (!$isContent)) {
1384                                         // Transfer content from dummy
1385                                         $reply = $content;
1386                                 }
1387                                 fclose($fp);
1388                                 //die(htmlentities($reply));
1389                                 return $reply;
1390                         }
1391                 }
1392         }    // END _rdf_data()
1393 }   // END class
1394 ?>