diff options
Diffstat (limited to 'fetcher/feedfetcher.php')
| -rw-r--r-- | fetcher/feedfetcher.php | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/fetcher/feedfetcher.php b/fetcher/feedfetcher.php deleted file mode 100644 index beffe9051..000000000 --- a/fetcher/feedfetcher.php +++ /dev/null @@ -1,302 +0,0 @@ -<?php -/** - * ownCloud - News - * - * This file is licensed under the Affero General Public License version 3 or - * later. See the COPYING file. - * - * @author Alessandro Cosentino <cosenal@gmail.com> - * @author Bernhard Posselt <dev@bernhard-posselt.com> - * @copyright Alessandro Cosentino 2012 - * @copyright Bernhard Posselt 2012, 2014 - */ - -namespace OCA\News\Fetcher; - -use Exception; - -use PicoFeed\Parser\MalFormedXmlException; -use PicoFeed\Reader\Reader; -use PicoFeed\Parser\Parser; -use PicoFeed\Reader\SubscriptionNotFoundException; -use PicoFeed\Reader\UnsupportedFeedFormatException; -use PicoFeed\Client\InvalidCertificateException; -use PicoFeed\Client\InvalidUrlException; -use PicoFeed\Client\MaxRedirectException; -use PicoFeed\Client\MaxSizeException; -use PicoFeed\Client\TimeoutException; -use PicoFeed\Client\ForbiddenException; -use PicoFeed\Client\UnauthorizedException; - -use OCP\IL10N; - -use OCA\News\Db\Item; -use OCA\News\Db\Feed; -use OCA\News\Utility\PicoFeedFaviconFactory; -use OCA\News\Utility\PicoFeedReaderFactory; -use OCA\News\Utility\Time; - -class FeedFetcher implements IFeedFetcher { - - private $faviconFactory; - private $reader; - private $l10n; - private $time; - - public function __construct(Reader $reader, - PicoFeedFaviconFactory $faviconFactory, - IL10N $l10n, - Time $time) { - $this->faviconFactory = $faviconFactory; - $this->reader = $reader; - $this->time = $time; - $this->l10n = $l10n; - } - - - /** - * This fetcher handles all the remaining urls therefore always returns true - */ - public function canHandle($url) { - return true; - } - - - /** - * Fetch a feed from remote - * @param string $url remote url of the feed - * @param boolean $getFavicon if the favicon should also be fetched, - * defaults to true - * @param string $lastModified a last modified value from an http header - * defaults to false. If lastModified matches the http header from the feed - * no results are fetched - * @param string $etag an etag from an http header. - * If lastModified matches the http header from the feed - * no results are fetched - * @param bool fullTextEnabled if true tells the fetcher to enhance the - * articles by fetching custom enhanced content - * @param string $basicAuthUser if given, basic auth is set for this feed - * @param string $basicAuthPassword if given, basic auth is set for this - * feed. Ignored if user is null or an empty string - * @throws FetcherException if it fails - * @return array an array containing the new feed and its items, first - * element being the Feed and second element being an array of Items - */ - public function fetch($url, $getFavicon = true, $lastModified = null, - $etag = null, $fullTextEnabled = false, - $basicAuthUser = null, $basicAuthPassword = null) { - try { - if ($basicAuthUser !== null && trim($basicAuthUser) !== '') { - $resource = $this->reader->discover($url, $lastModified, $etag, - $basicAuthUser, - $basicAuthPassword); - } else { - $resource = $this->reader->discover($url, $lastModified, $etag); - } - - if (!$resource->isModified()) { - return [null, null]; - } - - $location = $resource->getUrl(); - $etag = $resource->getEtag(); - $content = $resource->getContent(); - $encoding = $resource->getEncoding(); - $lastModified = $resource->getLastModified(); - - $parser = $this->reader->getParser($location, $content, $encoding); - - if ($fullTextEnabled) { - $parser->enableContentGrabber(); - } - - $parsedFeed = $parser->execute(); - - $feed = $this->buildFeed( - $parsedFeed, $url, $getFavicon, $lastModified, $etag, $location - ); - - $items = []; - foreach ($parsedFeed->getItems() as $item) { - $items[] = $this->buildItem($item, $parsedFeed); - } - - return [$feed, $items]; - - } catch (Exception $ex) { - $this->handleError($ex, $url); - } - - } - - - private function handleError(Exception $ex, $url) { - $msg = $ex->getMessage(); - - if ($ex instanceof MalFormedXmlException) { - $msg = $this->l10n->t('Feed contains invalid XML'); - } else if ($ex instanceof SubscriptionNotFoundException) { - $msg = $this->l10n->t('Feed not found: either the website ' . - 'does not provide a feed or blocks access. To rule out ' . - 'blocking, try to download the feed on your server\'s ' . - 'command line using curl: curl ' . $url); - } else if ($ex instanceof UnsupportedFeedFormatException) { - $msg = $this->l10n->t('Detected feed format is not supported'); - } else if ($ex instanceof InvalidCertificateException) { - $msg = $this->buildCurlSslErrorMessage($ex->getCode()); - } else if ($ex instanceof InvalidUrlException) { - $msg = $this->l10n->t('Website not found'); - } else if ($ex instanceof MaxRedirectException) { - $msg = $this->l10n->t('More redirects than allowed, aborting'); - } else if ($ex instanceof MaxSizeException) { - $msg = $this->l10n->t('Bigger than maximum allowed size'); - } else if ($ex instanceof TimeoutException) { - $msg = $this->l10n->t('Request timed out'); - } else if ($ex instanceof UnauthorizedException) { - $msg = $this->l10n->t('Required credentials for feed were ' . - 'either missing or incorrect'); - } else if ($ex instanceof ForbiddenException) { - $msg = $this->l10n->t('Forbidden to access feed'); - } - - throw new FetcherException($msg); - } - - private function buildCurlSslErrorMessage($errorCode) { - switch ($errorCode) { - case 35: // CURLE_SSL_CONNECT_ERROR - return $this->l10n->t( - 'Certificate error: A problem occurred ' . - 'somewhere in the SSL/TLS handshake. Could be ' . - 'certificates (file formats, paths, permissions), ' . - 'passwords, and others.' - ); - case 51: // CURLE_PEER_FAILED_VERIFICATION - return $this->l10n->t( - 'Certificate error: The remote server\'s SSL ' . - 'certificate or SSH md5 fingerprint was deemed not OK.' - ); - case 58: // CURLE_SSL_CERTPROBLEM - return $this->l10n->t( - 'Certificate error: Problem with the local client ' . - 'certificate.' - ); - case 59: // CURLE_SSL_CIPHER - return $this->l10n->t( - 'Certificate error: Couldn\'t use specified cipher.' - ); - case 60: // CURLE_SSL_CACERT - return $this->l10n->t( - 'Certificate error: Peer certificate cannot be ' . - 'authenticated with known CA certificates.' - ); - case 64: // CURLE_USE_SSL_FAILED - return $this->l10n->t( - 'Certificate error: Requested FTP SSL level failed.' - ); - case 66: // CURLE_SSL_ENGINE_INITFAILED - return $this->l10n->t( - 'Certificate error: Initiating the SSL Engine failed.' - ); - case 77: // CURLE_SSL_CACERT_BADFILE - return $this->l10n->t( - 'Certificate error: Problem with reading the SSL CA ' . - 'cert (path? access rights?)' - ); - case 83: // CURLE_SSL_ISSUER_ERROR - return $this->l10n->t( - 'Certificate error: Issuer check failed' - ); - default: - return $this->l10n->t('Unknown SSL certificate error!'); - } - } - - private function decodeTwice($string) { - return html_entity_decode( - html_entity_decode( - $string, ENT_QUOTES | ENT_HTML5, 'UTF-8' - ), - ENT_QUOTES | ENT_HTML5, 'UTF-8' - ); - } - - - protected function determineRtl($parsedItem, $parsedFeed) { - $itemLang = $parsedItem->getLanguage(); - $feedLang = $parsedFeed->getLanguage(); - - if ($itemLang) { - return Parser::isLanguageRTL($itemLang); - } else { - return Parser::isLanguageRTL($feedLang); - } - } - - - protected function buildItem($parsedItem, $parsedFeed) { - $item = new Item(); - $item->setUnread(); - $item->setUrl($parsedItem->getUrl()); - $item->setGuid($parsedItem->getId()); - $item->setGuidHash($item->getGuid()); - $item->setPubDate($parsedItem->getDate()->getTimestamp()); - $item->setRtl($this->determineRtl($parsedItem, $parsedFeed)); - - // unescape content because angularjs helps against XSS - $item->setTitle($this->decodeTwice($parsedItem->getTitle())); - $item->setAuthor($this->decodeTwice($parsedItem->getAuthor())); - - // purification is done in the service layer - $body = $parsedItem->getContent(); - $body = mb_convert_encoding($body, 'HTML-ENTITIES', - mb_detect_encoding($body)); - $item->setBody($body); - - $enclosureUrl = $parsedItem->getEnclosureUrl(); - if ($enclosureUrl) { - $enclosureType = $parsedItem->getEnclosureType(); - if (stripos($enclosureType, 'audio/') !== false || - stripos($enclosureType, 'video/') !== false - ) { - $item->setEnclosureMime($enclosureType); - $item->setEnclosureLink($enclosureUrl); - } - } - - $item->generateSearchIndex(); - - return $item; - } - - - protected function buildFeed($parsedFeed, $url, $getFavicon, $modified, - $etag, $location) { - $feed = new Feed(); - - $link = $parsedFeed->getSiteUrl(); - - if (!$link) { - $link = $location; - } - - // unescape content because angularjs helps against XSS - $title = strip_tags($this->decodeTwice($parsedFeed->getTitle())); - $feed->setTitle($title); - $feed->setUrl($url); // the url used to add the feed - $feed->setLocation($location); // the url where the feed was found - $feed->setLink($link); // <link> attribute in the feed - $feed->setHttpLastModified($modified); - $feed->setHttpEtag($etag); - $feed->setAdded($this->time->getTime()); - - if ($getFavicon) { - $faviconFetcher = $this->faviconFactory->build(); - $favicon = $faviconFetcher->find($feed->getLink()); - $feed->setFaviconLink($favicon); - } - - return $feed; - } - -} |