1: <?php
  2: /**
  3:  * This file contains the update notifier class.
  4:  *
  5:  * @package Core
  6:  * @subpackage Security
  7:  * @version SVN Revision $Rev:$
  8:  *
  9:  * @author Dominik Ziegler
 10:  * @copyright four for business AG <www.4fb.de>
 11:  * @license http://www.contenido.org/license/LIZENZ.txt
 12:  * @link http://www.4fb.de
 13:  * @link http://www.contenido.org
 14:  */
 15: 
 16: defined('CON_FRAMEWORK') || die('Illegal call: Missing framework initialization - request aborted.');
 17: 
 18: /**
 19:  * This class contains function for the update notifier.
 20:  *
 21:  * @package Core
 22:  * @subpackage Security
 23:  */
 24: class cUpdateNotifier {
 25: 
 26:     /**
 27:      * Minor release for the simplexml xpath() method
 28:      *
 29:      * @var string
 30:      */
 31:     protected $sMinorRelease = "";
 32: 
 33:     /**
 34:      * Host for vendor XML
 35:      *
 36:      * @var string
 37:      */
 38:     protected $sVendorHost = "www.contenido.org";
 39: 
 40:     /**
 41:      * Path to files
 42:      *
 43:      * @var string
 44:      */
 45:     protected $sVendorHostPath = "con_version_check_feeds/";
 46: 
 47:     /**
 48:      * Vendor XML file
 49:      *
 50:      * @var string
 51:      */
 52:     protected $sVendorXMLFile = "vendor.xml";
 53: 
 54:     /**
 55:      * German Vendor RSS file
 56:      *
 57:      * @var string
 58:      */
 59:     protected $sVendorRssDeFile = "rss_de.xml";
 60: 
 61:     /**
 62:      * English Vendor RSS file
 63:      *
 64:      * @var string
 65:      */
 66:     protected $sVendorRssEnFile = "rss_en.xml";
 67: 
 68:     /**
 69:      * Language specific RSS file
 70:      *
 71:      * @var string
 72:      */
 73:     protected $sRSSFile = "";
 74: 
 75:     /**
 76:      * Timestamp cache file
 77:      *
 78:      * @var string
 79:      */
 80:     protected $sTimestampCacheFile = "update.txt";
 81: 
 82:     /**
 83:      * Content of the XML file
 84:      *
 85:      * @var string
 86:      */
 87:     protected $sXMLContent = "";
 88: 
 89:     /**
 90:      * Content of the language specific RSS file
 91:      *
 92:      * @var string
 93:      */
 94:     protected $sRSSContent = "";
 95: 
 96:     /**
 97:      * Current available vendor version
 98:      *
 99:      * @var string
100:      */
101:     protected $sVendorVersion = "";
102: 
103:     /**
104:      * Download URL
105:      *
106:      * @var string
107:      */
108:     protected $sVendorURL = "http://www.contenido.org/de/redir";
109: 
110:     /**
111:      * Current backend language
112:      *
113:      * @var string
114:      */
115:     protected $sBackendLanguage = "";
116: 
117:     /**
118:      * Contains the cache path.
119:      *
120:      * @var string
121:      */
122:     protected $sCacheDirectory = "";
123: 
124:     /**
125:      * SimpleXML object
126:      *
127:      * @var object
128:      */
129:     protected $oXML = NULL;
130: 
131:     /**
132:      * Properties object
133:      *
134:      * @var object
135:      */
136:     protected $oProperties = NULL;
137: 
138:     /**
139:      * Session object
140:      *
141:      * @var object
142:      */
143:     protected $oSession = NULL;
144: 
145:     /**
146:      * Timeout for the fsockopen connection
147:      *
148:      * @var int
149:      */
150:     protected $iConnectTimeout = 3;
151: 
152:     /**
153:      * Cache duration in minutes
154:      *
155:      * @var int
156:      */
157:     protected $iCacheDuration = 60;
158: 
159:     /**
160:      * Check for system setting
161:      *
162:      * @var bool
163:      */
164:     protected $bEnableCheck = false;
165: 
166:     /**
167:      * Check for system setting Rss
168:      *
169:      * @var bool
170:      */
171:     protected $bEnableCheckRss = false;
172: 
173:     /**
174:      * If true CONTENIDO displays a special error message due to missing write
175:      * permissions.
176:      *
177:      * @var bool
178:      */
179:     protected $bNoWritePermissions = false;
180: 
181:     /**
182:      * Display update notification based on user rights (sysadmin only)
183:      *
184:      * @var bool
185:      */
186:     protected $bEnableView = false;
187: 
188:     /**
189:      * Update necessity
190:      *
191:      * @var bool
192:      */
193:     protected $bUpdateNecessity = false;
194: 
195:     /**
196:      * Vendor host reachability.
197:      *
198:      * @var bool
199:      */
200:     private $bVendorHostReachable = true;
201: 
202:     /**
203:      * Property configuration array
204:      *
205:      * @var array
206:      */
207:     protected $aPropConf = array(
208:         "itemType" => "update",
209:         "itemID" => 1,
210:         "type" => "file_check",
211:         "name" => "xml"
212:     );
213: 
214:     /**
215:      * System property configuration array for update notification
216:      *
217:      * @var array
218:      */
219:     protected $aSysPropConf = array(
220:         "type" => "update",
221:         "name" => "check"
222:     );
223: 
224:     /**
225:      * System property configuration array for rss notification
226:      *
227:      * @var array
228:      */
229:     protected $aSysPropConfRss = array(
230:         "type" => "update",
231:         "name" => "news_feed"
232:     );
233: 
234:     /**
235:      * System property configuration array for update period
236:      *
237:      * @var array
238:      */
239:     protected $aSysPropConfPeriod = array(
240:         "type" => "update",
241:         "name" => "check_period"
242:     );
243: 
244:     /**
245:      * CONTENIDO configuration array
246:      *
247:      * @var array
248:      */
249:     protected $aCfg = array();
250: 
251:     /**
252:      * Constructor of Contenido_UpdateNotifier
253:      *
254:      * @param array $aCfg
255:      * @param cApiUser $oUser
256:      * @param cPermission $oPerm
257:      * @param cSession $oSession
258:      * @param string $sBackendLanguage
259:      */
260:     public function __construct($aCfg, $oUser, $oPerm, $oSession, $sBackendLanguage) {
261:         $this->oProperties = new cApiPropertyCollection();
262:         $this->oSession = $oSession;
263:         $this->aCfg = $aCfg;
264:         $this->sBackendLanguage = $sBackendLanguage;
265: 
266:         if ($oPerm->isSysadmin($oUser) != 1) {
267:             $this->bEnableView = false;
268:         } else {
269:             $this->bEnableView = true;
270: 
271:             $sAction = $_GET['do'];
272:             if ($sAction != "") {
273:                 $this->updateSystemProperty($sAction);
274:             }
275: 
276:             $sPropUpdate = getSystemProperty($this->aSysPropConf['type'], $this->aSysPropConf['name']);
277:             $sPropRSS = getSystemProperty($this->aSysPropConfRss['type'], $this->aSysPropConfRss['name']);
278:             $sPeriod = getSystemProperty($this->aSysPropConfPeriod['type'], $this->aSysPropConfPeriod['name']);
279:             $iPeriod = cSecurity::toInteger($sPeriod);
280: 
281:             if ($sPropUpdate == "true" || $sPropRSS == "true") {
282: 
283:                 if ($sPropUpdate == "true") {
284:                     $this->bEnableCheck = true;
285:                 }
286: 
287:                 if ($sPropRSS == "true") {
288:                     $this->bEnableCheckRss = true;
289:                 }
290: 
291:                 // default cache duration of 60 minutes
292:                 if ($iPeriod >= 60) {
293:                     $this->iCacheDuration = $iPeriod;
294:                 } else {
295:                     $this->iCacheDuration = 60;
296:                 }
297: 
298:                 $this->setCachePath();
299:                 if ($this->sCacheDirectory != "") {
300:                     $this->setRSSFile();
301:                     $this->detectMinorRelease();
302:                     $this->checkUpdateNecessity();
303:                     $this->readVendorContent();
304:                 }
305:             }
306:         }
307:     }
308: 
309:     /**
310:      * Sets the actual RSS file for the reader
311:      */
312:     protected function setRSSFile() {
313:         if ($this->sBackendLanguage == "de_DE") {
314:             $this->sRSSFile = $this->sVendorRssDeFile;
315:         } else {
316:             $this->sRSSFile = $this->sVendorRssEnFile;
317:         }
318:     }
319: 
320:     /**
321:      * Updates the system property for activation/deactivation requests
322:      *
323:      * @param string $sAction
324:      */
325:     protected function updateSystemProperty($sAction) {
326:         if ($sAction == "activate") {
327:             setSystemProperty($this->aSysPropConf['type'], $this->aSysPropConf['name'], "true");
328:         } else if ($sAction == "deactivate") {
329:             setSystemProperty($this->aSysPropConf['type'], $this->aSysPropConf['name'], "false");
330:         } else if ($sAction == "activate_rss") {
331:             setSystemProperty($this->aSysPropConfRss['type'], $this->aSysPropConfRss['name'], "true");
332:         } else if ($sAction == "deactivate_rss") {
333:             setSystemProperty($this->aSysPropConfRss['type'], $this->aSysPropConfRss['name'], "false");
334:         }
335:     }
336: 
337:     /**
338:      * Sets the cache path
339:      */
340:     protected function setCachePath() {
341:         $sCachePath = $this->aCfg['path']['contenido_cache'];
342:         if (!is_dir($sCachePath)) {
343:             mkdir($sCachePath, 0777);
344:         }
345: 
346:         if (!is_writable($sCachePath)) {
347:             // setting special flag for error message
348:             $this->bNoWritePermissions = true;
349:         } else {
350:             $this->sCacheDirectory = $sCachePath;
351:         }
352:     }
353: 
354:     /**
355:      * Checks if the xml files must be loaded from the vendor host or local
356:      * cache
357:      */
358:     protected function checkUpdateNecessity() {
359:         $bUpdateNecessity = false;
360: 
361:         $aCheckFiles = array(
362:             $this->sVendorXMLFile,
363:             $this->sVendorRssDeFile,
364:             $this->sVendorRssEnFile,
365:             $this->sTimestampCacheFile
366:         );
367:         foreach ($aCheckFiles as $sFilename) {
368:             if (!cFileHandler::exists($this->sCacheDirectory . $sFilename)) {
369:                 $bUpdateNecessity = true;
370:                 break;
371:             }
372:         }
373: 
374:         if ($bUpdateNecessity == false) {
375:             $iLastUpdate = (int) cFileHandler::read($this->sCacheDirectory . $this->sTimestampCacheFile);
376: 
377:             $iCheckTimestamp = $iLastUpdate + ($this->iCacheDuration * 60);
378:             $iCurrentTime = time();
379: 
380:             if ($iCheckTimestamp > $iCurrentTime) {
381:                 $bUpdateNecessity = false;
382:             } else {
383:                 $bUpdateNecessity = true;
384:             }
385:         }
386: 
387:         $this->bUpdateNecessity = $bUpdateNecessity;
388:     }
389: 
390:     /**
391:      * Detects and converts the minor release of the system version
392:      */
393:     protected function detectMinorRelease() {
394:         $sVersion = CON_VERSION;
395:         $aExplode = explode(".", $sVersion);
396:         $sMinorRelease = "con" . $aExplode[0] . $aExplode[1];
397:         $this->sMinorRelease = $sMinorRelease;
398:     }
399: 
400:     /**
401:      * Reads the xml files from vendor host or cache and checks for file
402:      * manipulations
403:      */
404:     protected function readVendorContent() {
405:         $this->sXMLContent = "";
406: 
407:         if ($this->bUpdateNecessity == true) {
408:             $aXmlContent = $this->getVendorHostFiles();
409: 
410:             if (isset($aXmlContent[$this->sVendorXMLFile]) && isset($aXmlContent[$this->sVendorRssDeFile]) && isset($aXmlContent[$this->sVendorRssEnFile])) {
411:                 $this->handleVendorUpdate($aXmlContent);
412:             }
413:         } else {
414: 
415:             $sXMLContent = cFileHandler::read($this->sCacheDirectory . $this->sVendorXMLFile);
416:             $aRSSContent[$this->sVendorRssDeFile] = cFileHandler::read($this->sCacheDirectory . $this->sVendorRssDeFile);
417:             $aRSSContent[$this->sVendorRssEnFile] = cFileHandler::read($this->sCacheDirectory . $this->sVendorRssEnFile);
418: 
419:             $sXMLHash = md5($sXMLContent . $aRSSContent[$this->sVendorRssDeFile] . $aRSSContent[$this->sVendorRssEnFile]);
420:             $sPropertyHash = $this->getHashProperty();
421:             if ($sXMLHash == $sPropertyHash) {
422:                 $this->sXMLContent = $sXMLContent;
423:                 $this->sRSSContent = $aRSSContent[$this->sRSSFile];
424:             } else {
425:                 $aXmlContent = $this->getVendorHostFiles();
426:                 if (isset($aXmlContent[$this->sVendorXMLFile]) && isset($aXmlContent[$this->sVendorRssDeFile]) && isset($aXmlContent[$this->sVendorRssEnFile])) {
427:                     $this->handleVendorUpdate($aXmlContent);
428:                 }
429:             }
430:         }
431: 
432:         // echo $this->sXMLContent;
433:         // echo $this->sRSSContent;
434:         if ($this->sXMLContent != "") {
435: 
436:             $this->oXML = simplexml_load_string($this->sXMLContent);
437:             if (!is_object($this->oXML)) {
438:                 $sErrorMessage = i18n('Unable to check for new updates!') . " " . i18n('Could not handle server response!');
439:                 $this->sErrorOutput = $this->renderOutput($sErrorMessage);
440:             } else {
441:                 $oVersion = $this->oXML->xpath("/fourforbusiness/contenido/releases/" . $this->sMinorRelease);
442:                 if (!isset($oVersion[0])) {
443:                     $sErrorMessage = i18n('Unable to check for new updates!') . " " . i18n('Could not determine vendor version!');
444:                     $this->sErrorOutput = $this->renderOutput($sErrorMessage);
445:                 } else {
446:                     $this->sVendorVersion = $oVersion[0];
447:                 }
448:             }
449:         }
450:     }
451: 
452:     /**
453:      * Handles the update of files coming per vendor host
454:      *
455:      * @param array $aXMLContent
456:      */
457:     protected function handleVendorUpdate($aXMLContent) {
458:         $bValidXMLFile = true;
459:         $bValidDeRSSFile = true;
460:         $bValidEnRSSFile = true;
461: 
462:         $sCheckXML = stristr($aXMLContent[$this->sVendorXMLFile], "<fourforbusiness>");
463:         if ($sCheckXML == false) {
464:             $bValidXMLFile = false;
465:         }
466: 
467:         $sCheckDeRSS = stristr($aXMLContent[$this->sVendorRssDeFile], "<channel>");
468:         if ($sCheckDeRSS == false) {
469:             $bValidDeRSSFile = false;
470:         }
471: 
472:         $sCheckEnRSS = stristr($aXMLContent[$this->sVendorRssEnFile], "<channel>");
473:         if ($sCheckEnRSS == false) {
474:             $bValidEnRSSFile = false;
475:         }
476: 
477:         // To prevent simplexml and rss reader parser errors by loading an error
478:         // page from the vendor host
479:         // the content will be replaced with the cached file (if existing) or a
480:         // string
481:         if ($bValidXMLFile != true) {
482:             if (cFileHandler::exists($this->sCacheDirectory . $this->sVendorXMLFile)) {
483:                 $sXMLReplace = cFileHandler::read($this->sCacheDirectory . $this->sVendorXMLFile);
484:             } else {
485:                 $sXMLReplace = "<error>The vendor host file at " . $this->sVendorHost . " is not availiable!</error>";
486:             }
487:             $aXMLContent[$this->sVendorXMLFile] = $sXMLReplace;
488:         }
489: 
490:         if ($bValidDeRSSFile != true) {
491:             if (cFileHandler::exists($this->sCacheDirectory . $this->sVendorRssDeFile)) {
492:                 $sDeRSSReplace = cFileHandler::read($this->sCacheDirectory . $this->sVendorRssDeFile);
493:             } else {
494:                 $sDeRSSReplace = "<rss></rss>";
495:             }
496:             $aXMLContent[$this->sVendorRssDeFile] = $sDeRSSReplace;
497:         }
498: 
499:         if ($bValidEnRSSFile != true) {
500:             if (cFileHandler::exists($this->sCacheDirectory . $this->sVendorRssEnFile)) {
501:                 $sEnRSSReplace = cFileHandler::read($this->sCacheDirectory . $this->sVendorRssEnFile);
502:             } else {
503:                 $sEnRSSReplace = "<rss></rss>";
504:             }
505:             $aXMLContent[$this->sVendorRssEnFile] = $sEnRSSReplace;
506:         }
507: 
508:         $this->sXMLContent = $aXMLContent[$this->sVendorXMLFile];
509:         $this->sRSSContent = $aXMLContent[$this->sRSSFile];
510:         $this->updateCacheFiles($aXMLContent);
511:         $this->updateHashProperty($aXMLContent);
512:     }
513: 
514:     /**
515:      * Connects with vendor host and gets the xml files
516:      *
517:      * @return array
518:      */
519:     protected function getVendorHostFiles() {
520:         $aXMLContent = array();
521:         // get update file
522:         $sXMLUpdate = $this->fetchUrl($this->sVendorHostPath . $this->sVendorXMLFile);
523: 
524:         // get german rss file
525:         $sDeRSSContent = $this->fetchUrl($this->sVendorHostPath . $this->sVendorRssDeFile);
526: 
527:         // get english rss file
528:         $sEnRSSContent = $this->fetchUrl($this->sVendorHostPath . $this->sVendorRssEnFile);
529: 
530:         $aXMLContent[$this->sVendorXMLFile] = $sXMLUpdate;
531:         $aXMLContent[$this->sVendorRssDeFile] = $sDeRSSContent;
532:         $aXMLContent[$this->sVendorRssEnFile] = $sEnRSSContent;
533: 
534:         return $aXMLContent;
535:     }
536: 
537:     /**
538:      * Updates the files in cache
539:      *
540:      * @param array $aRSSContent
541:      */
542:     protected function updateCacheFiles($aRSSContent) {
543:         $aWriteCache = array();
544:         $aWriteCache[$this->sVendorXMLFile] = $this->sXMLContent;
545:         $aWriteCache[$this->sVendorRssDeFile] = $aRSSContent[$this->sVendorRssDeFile];
546:         $aWriteCache[$this->sVendorRssEnFile] = $aRSSContent[$this->sVendorRssEnFile];
547:         $aWriteCache[$this->sTimestampCacheFile] = time();
548: 
549:         if (is_writable($this->sCacheDirectory)) {
550:             foreach ($aWriteCache as $sFile => $sContent) {
551:                 $sCacheFile = $this->sCacheDirectory . $sFile;
552:                 cFileHandler::write($sCacheFile, $sContent, false);
553:             }
554:         }
555:     }
556: 
557:     /**
558:      * Gets the xml file hash from the property table
559:      *
560:      * @return string
561:      */
562:     protected function getHashProperty() {
563:         $sProperty = $this->oProperties->getValue($this->aPropConf['itemType'], $this->aPropConf['itemID'], $this->aPropConf['type'], $this->aPropConf['name']);
564:         return $sProperty;
565:     }
566: 
567:     /**
568:      * Updates the xml file hash in the property table
569:      *
570:      * @param array $aRSSContent
571:      */
572:     protected function updateHashProperty($aXMLContent) {
573:         $sXML = $aXMLContent[$this->sVendorXMLFile];
574:         $sDeRSS = $aXMLContent[$this->sVendorRssDeFile];
575:         $sEnRSS = $aXMLContent[$this->sVendorRssEnFile];
576: 
577:         $sPropValue = md5($sXML . $sDeRSS . $sEnRSS);
578:         $this->oProperties->setValue($this->aPropConf['itemType'], $this->aPropConf['itemID'], $this->aPropConf['type'], $this->aPropConf['name'], $sPropValue);
579:     }
580: 
581:     /**
582:      * Checks the patch level of system and vendor version
583:      *
584:      * @return string
585:      */
586:     protected function checkPatchLevel() {
587:         $sVersionCompare = version_compare(CON_VERSION, $this->sVendorVersion);
588:         return $sVersionCompare;
589:     }
590: 
591:     /**
592:      * Generates the download URL
593:      *
594:      * @return string
595:      */
596:     protected function getDownloadURL() {
597:         $sVendorURLVersion = str_replace(".", "_", $this->sVendorVersion);
598:         $sVendorURL = $this->sVendorURL . "/Contenido_" . $sVendorURLVersion;
599:         return $sVendorURL;
600:     }
601: 
602:     /**
603:      * Generates the output for the backend
604:      *
605:      * @param string $sMessage
606:      * @return string
607:      */
608:     protected function renderOutput($sMessage) {
609:         $oTpl = new cTemplate();
610:         $oTpl->set('s', 'UPDATE_MESSAGE', $sMessage);
611: 
612:         if ($this->bEnableCheck == true) {
613:             $oTpl->set('s', 'UPDATE_ACTIVATION', i18n('Disable update notification'));
614:             $oTpl->set('s', 'IMG_BUT_UPDATE', 'but_cancel.gif');
615:             $oTpl->set('s', 'LABEL_BUT_UPDATE', i18n('Disable notification'));
616:             $oTpl->set('s', 'URL_UPDATE', $this->oSession->url('main.php?frame=4&amp;area=mycontenido&amp;do=deactivate'));
617:         } else {
618:             $oTpl->set('s', 'UPDATE_ACTIVATION', i18n('Enable update notification (recommended)'));
619:             $oTpl->set('s', 'IMG_BUT_UPDATE', 'but_ok.gif');
620:             $oTpl->set('s', 'LABEL_BUT_UPDATE', i18n('Enable notification'));
621:             $oTpl->set('s', 'URL_UPDATE', $this->oSession->url('main.php?frame=4&amp;area=mycontenido&amp;do=activate'));
622:         }
623: 
624:         if ($this->bEnableCheckRss == true) {
625:             $oTpl->set('s', 'RSS_ACTIVATION', i18n('Disable RSS notification'));
626:             $oTpl->set('s', 'IMG_BUT_RSS', 'but_cancel.gif');
627:             $oTpl->set('s', 'LABEL_BUT_RSS', i18n('Disable notification'));
628:             $oTpl->set('s', 'URL_RSS', $this->oSession->url('main.php?frame=4&amp;area=mycontenido&amp;do=deactivate_rss'));
629: 
630:             $oTpl = $this->renderRss($oTpl);
631:         } else {
632:             $oTpl->set('s', 'RSS_ACTIVATION', i18n('Enable RSS notification (recommended)'));
633:             $oTpl->set('s', 'IMG_BUT_RSS', 'but_ok.gif');
634:             $oTpl->set('s', 'LABEL_BUT_RSS', i18n('Enable notification'));
635:             $oTpl->set('s', 'URL_RSS', $this->oSession->url('main.php?frame=4&amp;area=mycontenido&amp;do=activate_rss'));
636:             $oTpl->set('s', 'NEWS_NOCONTENT', i18n('RSS notification is disabled'));
637:             $oTpl->set("s", "DISPLAY_DISABLED", 'block');
638:         }
639: 
640:         return $oTpl->generate('templates/standard/' . $this->aCfg['templates']['welcome_update'], 1);
641:     }
642: 
643:     /**
644:      * Generates the output for the rss informations
645:      *
646:      * @param cTemplate $oTpl
647:      * @return cTemplate
648:      *         CONTENIDO template object
649:      */
650:     protected function renderRss($oTpl) {
651:         if (!is_object($oTpl)) {
652:             $oTpl = new cTemplate();
653:         }
654: 
655:         if ($this->sRSSContent != '<rss></rss>') {
656:             $doc = new cXmlReader();
657:             $doc->load($this->sCacheDirectory . $this->sRSSFile);
658: 
659:             $maxFeedItems = 3;
660: 
661:             for ($iCnt = 0; $iCnt < $maxFeedItems; $iCnt++) {
662:                 $title = $doc->getXpathValue('*/channel/item/title', $iCnt);
663:                 $link = $doc->getXpathValue('*/channel/item/link', $iCnt);
664:                 $description = $doc->getXpathValue('*/channel/item/description', $iCnt);
665:                 $date = $doc->getXpathValue('*/channel/item/pubDate', $iCnt);
666: 
667:                 // hotfix do not call conHtmlentities because of different
668:                 // umlaut handling on PHP 5.3 and PHP 5.4
669:                 // perhaps it is a bug in conHtmlentities.
670:                 $title = utf8_encode($title);
671:                 $sText = utf8_encode($description);
672: 
673:                 if (strlen($sText) > 150) {
674:                     $sText = cString::trimAfterWord($sText, 150) . '...';
675:                 }
676: 
677:                 $date = date(getEffectiveSetting("dateformat", "full", "Y-m-d H:i:s"), strtotime($date));
678: 
679:                 // highlight newest rss news
680:                 if ($iCnt == 0) {
681:                     $oTpl->set("d", "NEWS_NEWEST_CSS", "newest_news");
682:                 } else {
683:                     $oTpl->set("d", "NEWS_NEWEST_CSS", "");
684:                 }
685: 
686:                 $oTpl->set("d", "NEWS_DATE", $date);
687:                 $oTpl->set("d", "NEWS_TITLE", $title);
688:                 $oTpl->set("d", "NEWS_TEXT", $sText);
689:                 $oTpl->set("d", "NEWS_URL", $link);
690:                 $oTpl->set("d", "LABEL_MORE", i18n('read more'));
691:                 $oTpl->next();
692:             }
693: 
694:             if ($iCnt == 0) {
695:                 $oTpl->set("s", "NEWS_NOCONTENT", i18n("No RSS content available"));
696:                 $oTpl->set("s", "DISPLAY_DISABLED", 'block');
697:             } else {
698:                 $oTpl->set("s", "NEWS_NOCONTENT", "");
699:                 $oTpl->set("s", "DISPLAY_DISABLED", 'none');
700:             }
701:         } else if ($this->bNoWritePermissions == true) {
702:             $oTpl->set("s", "NEWS_NOCONTENT", i18n('Your webserver does not have write permissions for the directory /contenido/data/cache/!'));
703:         } else {
704:             $oTpl->set("s", "NEWS_NOCONTENT", i18n("No RSS content available"));
705:         }
706: 
707:         return $oTpl;
708:     }
709: 
710:     /**
711:      * fetches given url for vendorfiles
712:      *
713:      * @todo add a retry counter and a deathpoint with warning in errorlog
714:      * @param string $sUrl
715:      * @return string|bool
716:      */
717:     private function fetchUrl($sUrl) {
718:         if ($this->bVendorHostReachable != true) {
719:             return false;
720:         }
721: 
722:         $handler = cHttpRequest::getHttpRequest($this->sVendorHost . '/' . $sUrl);
723:         $output = $handler->getRequest();
724: 
725:         if (!$output) {
726:             $sErrorMessage = i18n('Unable to check for new updates!') . " " . i18n('Connection to contenido.org failed!');
727:             $this->sErrorOutput = $this->renderOutput($sErrorMessage);
728:             $this->bVendorHostReachable = false;
729:             return false;
730:         }
731: 
732:         return ($output != "") ? $output : false;
733:     }
734: 
735:     /**
736:      * Displays the rendered output
737:      *
738:      * @return string
739:      */
740:     public function displayOutput() {
741:         if (!$this->bEnableView) {
742:             $sOutput = "";
743:         } else if ($this->bNoWritePermissions == true) {
744:             $sMessage = i18n('Your webserver does not have write permissions for the directory /contenido/data/cache/!');
745:             $sOutput = $this->renderOutput($sMessage);
746:         } else if (!$this->bEnableCheck) {
747:             $sMessage = i18n('Update notification is disabled! For actual update information, please activate.');
748:             $sOutput = $this->renderOutput($sMessage);
749:         } else if ($this->sErrorOutput != "") {
750:             $sOutput = $this->sErrorOutput;
751:         } else if ($this->sVendorVersion == '') {
752:             $sMessage = i18n('You have an unknown or unsupported version of CONTENIDO!');
753:             $sOutput = $this->renderOutput($sMessage);
754:         } else if ($this->sVendorVersion == "deprecated") {
755:             $sMessage = sprintf(i18n("Your version of CONTENIDO is deprecated and not longer supported for any updates. Please update to a higher version! <br /> <a href='%s' class='blue' target='_blank'>Download now!</a>"), 'http://www.contenido.org');
756:             $sOutput = $this->renderOutput($sMessage);
757:         } else if ($this->checkPatchLevel() == "-1") {
758:             $sVendorDownloadURL = $this->getDownloadURL();
759:             $sMessage = sprintf(i18n("A new version of CONTENIDO is available! <br /> <a href='%s' class='blue' target='_blank'>Download %s now!</a>"), $sVendorDownloadURL, $this->sVendorVersion);
760:             $sOutput = $this->renderOutput($sMessage);
761:         } else if ($this->checkPatchLevel() == "1") {
762:             $sMessage = sprintf(i18n('It seems to be that your version string was manipulated. CONTENIDO %s does not exist!'), CON_VERSION);
763:             $sOutput = $this->renderOutput($sMessage);
764:         } else {
765:             $sMessage = i18n('Your version of CONTENIDO is up to date!');
766:             $sOutput = $this->renderOutput($sMessage);
767:         }
768: 
769:         return $sOutput;
770:     }
771: }
772: