From 95530f62513a82c385d9378b4a59da57d74092d9 Mon Sep 17 00:00:00 2001
From: Bernhard Posselt <dev@bernhard-posselt.com>
Date: Wed, 5 Nov 2014 11:30:27 +0100
Subject: update picofeed, add max size setting, fix #642

---
 fetcher/feedfetcher.php | 81 ++++++++++++++++++++++++++++++++-----------------
 1 file changed, 53 insertions(+), 28 deletions(-)

(limited to 'fetcher')

diff --git a/fetcher/feedfetcher.php b/fetcher/feedfetcher.php
index 733506187..d59761b26 100644
--- a/fetcher/feedfetcher.php
+++ b/fetcher/feedfetcher.php
@@ -13,6 +13,18 @@
 
 namespace OCA\News\Fetcher;
 
+use \PicoFeed\Parser\MalFormedXmlException;
+use \PicoFeed\Reader\Reader;
+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 \OCP\IL10N;
+
 use \OCA\News\Db\Item;
 use \OCA\News\Db\Feed;
 use \OCA\News\Utility\PicoFeedFaviconFactory;
@@ -21,15 +33,18 @@ use \OCA\News\Utility\PicoFeedReaderFactory;
 class FeedFetcher implements IFeedFetcher {
 
     private $faviconFactory;
-    private $readerFactory;
+    private $reader;
+    private $l10n;
     private $time;
 
-    public function __construct(PicoFeedReaderFactory $readerFactory,
+    public function __construct(Reader $reader,
                                 PicoFeedFaviconFactory $faviconFactory,
+                                IL10N $l10n,
                                 $time){
         $this->faviconFactory = $faviconFactory;
-        $this->readerFactory = $readerFactory;
+        $this->reader = $reader;
         $this->time = $time;
+        $this->l10n = $l10n;
     }
 
 
@@ -58,46 +73,56 @@ class FeedFetcher implements IFeedFetcher {
      */
     public function fetch($url, $getFavicon=true, $lastModified=null,
                           $etag=null) {
-        $reader = $this->readerFactory->build();
-        $resource = $reader->download($url, $lastModified, $etag);
+        try {
+            $resource = $this->reader->discover($url, $lastModified, $etag);
 
-        $modified = $resource->getLastModified();
-        $etag = $resource->getEtag();
-        $location = $resource->getUrl();
+            if (!$resource->isModified()) {
+                return [null, null];
+            }
 
-        if (!$resource->isModified()) {
-            return [null, null];
-        }
+            $location = $resource->getUrl();
+            $etag = $resource->getEtag();
+            $content = $resource->getContent();
+            $encoding = $resource->getEncoding();
+            $lastModified = $resource->getLastModified();
 
-        try {
-            $parser = $reader->getParser();
+            $parser = $this->reader->getParser($location, $content, $encoding);
 
-            if (!$parser) {
-                throw new \Exception(
-                    'Could not find a valid feed at url ' . $url
-                );
-            }
             $parsedFeed = $parser->execute();
 
-            if (!$parsedFeed) {
-                throw new \Exception(
-                    'Could not parse feed ' . $url
-                );
-            }
+            $feed = $this->buildFeed(
+                $parsedFeed, $url, $getFavicon, $lastModified, $etag, $location
+            );
 
             $items = [];
             foreach($parsedFeed->getItems() as $item) {
                 $items[] = $this->buildItem($item);
             }
 
-            $feed = $this->buildFeed(
-                $parsedFeed, $url, $getFavicon, $modified, $etag, $location
-            );
-
             return [$feed, $items];
 
         } catch(\Exception $ex){
-            throw new FetcherException($ex->getMessage());
+            $msg = $ex->getMessage();
+
+            if ($ex instanceof MalFormedXmlException) {
+                $msg = $this->l10n->t('Feed contains invalid XML');
+            } else if ($ex instanceof SubscriptionNotFoundException) {
+                $msg = $this->l10n->t('Could not find a feed');
+            } else if ($ex instanceof UnsupportedFeedFormatException) {
+                $msg = $this->l10n->t('Detected feed format is not supported');
+            } else if ($ex instanceof InvalidCertificateException) {
+                $msg = $this->l10n->t('SSL Certificate is invalid');
+            } else if ($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 = $this->l10n->t('Request timed out');
+            }
+
+            throw new FetcherException($msg);
         }
 
     }
-- 
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