From fb28fadcf6e71b4b797aa4241436ec3add543ba0 Mon Sep 17 00:00:00 2001
From: Bernhard Posselt <dev@bernhard-posselt.com>
Date: Tue, 21 Oct 2014 23:45:06 +0200
Subject: get rid of faviconfetcher and use picofeed

---
 utility/faviconfetcher.php | 164 ---------------------------------------------
 1 file changed, 164 deletions(-)
 delete mode 100644 utility/faviconfetcher.php

(limited to 'utility')

diff --git a/utility/faviconfetcher.php b/utility/faviconfetcher.php
deleted file mode 100644
index b837db91c..000000000
--- a/utility/faviconfetcher.php
+++ /dev/null
@@ -1,164 +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\Utility;
-
-use \ZendXml\Security;
-
-
-class FaviconFetcher {
-
-    private $apiFactory;
-
-    /**
-     * Inject a factory to build a simplepie file object. This is needed because
-     * the file object contains logic in its constructor which makes it
-     * impossible to inject and test
-     */
-    public function __construct(SimplePieAPIFactory $apiFactory) {
-        $this->apiFactory = $apiFactory;
-    }
-
-
-    /**
-     * Fetches a favicon from a given URL
-     *
-     * @param string|null $url the url where to fetch it from
-     * @return null|string
-     */
-    public function fetch($url) {
-        try {
-            $url = $this->buildURL($url);
-        } catch (NoValidUrlException $e) {
-            return null;
-        }
-
-        $faviconUrl = $this->extractFromPage($url);
-
-        // check the url for a valid image
-        if($faviconUrl && $this->isImage($faviconUrl)) {
-            return $faviconUrl;
-        } elseif ($url) {
-            $base = new \Net_URL2($url);
-            $faviconUrl = (string) $base->resolve('/favicon.ico');
-
-            if($this->isImage($faviconUrl)) {
-                return $faviconUrl;
-            }
-        }
-
-        return null;
-    }
-
-    /**
-     * Get the attribute if its a DOMElement, otherwise return null
-     */
-    private function getAttribute($item, $name) {
-        // used to fix scrutinizer errors
-        if ($item instanceof \DOMElement) {
-            return $item->getAttribute($name);
-        } else {
-            return null;
-        }
-    }
-
-
-    /**
-     * Tries to get a favicon from a page
-     * @param string $url the url to the page
-     * @return string the full url to the page
-     */
-    protected function extractFromPage($url) {
-        if(!$url) {
-            return null;
-        }
-
-        $file = $this->getFile($url);
-
-        /** @noinspection PhpUndefinedFieldInspection */
-        if($file->body !== '') {
-            $dom = new \DOMDocument();
-
-            Security::scan($file->body, $dom, function ($xml, $dom) {
-                return @$dom->loadHTML($xml, LIBXML_NONET);
-            });
-
-            if($dom) {
-                $xpath = new \DOMXpath($dom);
-                $elements = $xpath->query("//link[contains(@rel, 'icon')]");
-
-                if ($elements->length > 0) {
-                    /** @noinspection PhpUndefinedMethodInspection */
-                    $iconPath = $this->getAttribute($elements->item(0), 'href');
-                    $base = new \Net_URL2($url);
-                    $absPath = (string) $base->resolve($iconPath, $url);
-                    return $absPath;
-                }
-            }
-        }
-
-        return null;
-    }
-
-
-    private function getFile($url) {
-        return $this->apiFactory->getFile(
-            $url, 10, 5, null, 'Mozilla/5.0 AppleWebKit'
-        );
-    }
-
-
-    /**
-     * Test if the file is an image
-     * @param string $url the url to the file
-     * @return bool true if image
-     */
-    protected function isImage($url) {
-        // check for empty urls
-        if(!$url) {
-            return false;
-        }
-
-        $file = $this->getFile($url);
-        /** @noinspection PhpParamsInspection */
-        $sniffer = new \SimplePie_Content_Type_Sniffer($file);
-        return $sniffer->image() !== false;
-    }
-
-
-    /**
-     * Get HTTP or HTTPS addresses from an incomplete URL
-     * @param string $url the url that should be built
-     * @return string a string containing the http or https address
-     * @throws NoValidUrlException when no valid url can be returned
-     */
-    protected function buildURL($url) {
-        // trim the right / from the url
-        $url = trim($url);
-        $url = rtrim($url, '/');
-
-        // check for http:// or https:// and validate URL
-        if (strpos($url, 'http://') === 0 || strpos($url, 'https://') === 0) {
-            if (filter_var($url, FILTER_VALIDATE_URL)) {
-                return $url;
-            }
-        } elseif (filter_var("http://" . $url, FILTER_VALIDATE_URL)) {
-            // maybe $url was something like www.example.com
-            return 'http://' . $url;
-        }
-
-        // no valid URL was passed in or could be built from $url
-        throw new NoValidUrlException();
-    }
-
-}
-- 
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