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