Download pictures successfully

Needs to rewrite them properly (get base url)

2 files changed, 156 insertions, 169 deletions

diff --git a/src/Wallabag/CoreBundle/Helper/ContentProxy.php b/src/Wallabag/CoreBundle/Helper/ContentProxy.php
index ddeffa77..bbad705f 100644
--- a/src/Wallabag/CoreBundle/Helper/ContentProxy.php
+++ b/src/Wallabag/CoreBundle/Helper/ContentProxy.php
@@ -65,7 +65,7 @@ class ContentProxy
 
         $entry->setUrl($content['url'] ?: $url);
         $entry->setTitle($title);
-        $entry->setContent($html);
+
         $entry->setLanguage($content['language']);
         $entry->setMimetype($content['content_type']);
         $entry->setReadingTime(Utils::getReadingTime($html));
@@ -75,6 +75,14 @@ class ContentProxy
             $entry->setDomainName($domainName);
         }
 
+        if (true) {
+            $this->logger->log('debug','Starting to download images');
+            $downloadImages = new DownloadImages($html, $url, $this->logger);
+            $html = $downloadImages->process();
+        }
+
+        $entry->setContent($html);
+
         if (isset($content['open_graph']['og_image'])) {
             $entry->setPreviewPicture($content['open_graph']['og_image']);
         }
@@ -151,172 +159,4 @@ class ContentProxy
     {
         return isset($content['title']) && isset($content['html']) && isset($content['url']) && isset($content['language']) && isset($content['content_type']);
     }
-
-    /**
-     * Changing pictures URL in article content.
-     */
-    public static function filterPicture($content, $url, $id)
-    {
-        $matches = array();
-        $processing_pictures = array(); // list of processing image to avoid processing the same pictures twice
-        preg_match_all('#<\s*(img)[^>]+src="([^"]*)"[^>]*>#Si', $content, $matches, PREG_SET_ORDER);
-        foreach ($matches as $i => $link) {
-            $link[1] = trim($link[1]);
-            if (!preg_match('#^(([a-z]+://)|(\#))#', $link[1])) {
-                $absolute_path = self::_getAbsoluteLink($link[2], $url);
-                $filename = basename(parse_url($absolute_path, PHP_URL_PATH));
-                $directory = self::_createAssetsDirectory($id);
-                $fullpath = $directory.'/'.$filename;
-
-                if (in_array($absolute_path, $processing_pictures) === true) {
-                    // replace picture's URL only if processing is OK : already processing -> go to next picture
-                  continue;
-                }
-
-                if (self::_downloadPictures($absolute_path, $fullpath) === true) {
-                    $content = str_replace($matches[$i][2], Tools::getPocheUrl().$fullpath, $content);
-                }
-
-                $processing_pictures[] = $absolute_path;
-            }
-        }
-
-        return $content;
-    }
-
-    /**
-     * Get absolute URL.
-     */
-    private static function _getAbsoluteLink($relativeLink, $url)
-    {
-        /* return if already absolute URL */
-        if (parse_url($relativeLink, PHP_URL_SCHEME) != '') {
-            return $relativeLink;
-        }
-
-        /* queries and anchors */
-        if ($relativeLink[0] == '#' || $relativeLink[0] == '?') {
-            return $url.$relativeLink;
-        }
-
-        /* parse base URL and convert to local variables:
-           $scheme, $host, $path */
-        extract(parse_url($url));
-
-        /* remove non-directory element from path */
-        $path = preg_replace('#/[^/]*$#', '', $path);
-
-        /* destroy path if relative url points to root */
-        if ($relativeLink[0] == '/') {
-            $path = '';
-        }
-
-        /* dirty absolute URL */
-        $abs = $host.$path.'/'.$relativeLink;
-
-        /* replace '//' or '/./' or '/foo/../' with '/' */
-        $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
-        for ($n = 1; $n > 0; $abs = preg_replace($re, '/', $abs, -1, $n)) {
-        }
-
-        /* absolute URL is ready! */
-        return $scheme.'://'.$abs;
-    }
-
-    /**
-     * Downloading pictures.
-     *
-     * @return bool true if the download and processing is OK, false else
-     */
-    private static function _downloadPictures($absolute_path, $fullpath)
-    {
-        $rawdata = Tools::getFile($absolute_path);
-        $fullpath = urldecode($fullpath);
-
-        if (file_exists($fullpath)) {
-            unlink($fullpath);
-        }
-
-        // check extension
-        $file_ext = strrchr($fullpath, '.');
-        $whitelist = array('.jpg', '.jpeg', '.gif', '.png');
-        if (!(in_array($file_ext, $whitelist))) {
-            Tools::logm('processed image with not allowed extension. Skipping '.$fullpath);
-
-            return false;
-        }
-
-        // check headers
-        $imageinfo = getimagesize($absolute_path);
-        if ($imageinfo['mime'] != 'image/gif' && $imageinfo['mime'] != 'image/jpeg' && $imageinfo['mime'] != 'image/jpg' && $imageinfo['mime'] != 'image/png') {
-            Tools::logm('processed image with bad header. Skipping '.$fullpath);
-
-            return false;
-        }
-
-        // regenerate image
-        $im = imagecreatefromstring($rawdata);
-        if ($im === false) {
-            Tools::logm('error while regenerating image '.$fullpath);
-
-            return false;
-        }
-
-        switch ($imageinfo['mime']) {
-            case 'image/gif':
-                $result = imagegif($im, $fullpath);
-                break;
-            case 'image/jpeg':
-            case 'image/jpg':
-                $result = imagejpeg($im, $fullpath, REGENERATE_PICTURES_QUALITY);
-                break;
-            case 'image/png':
-                $result = imagepng($im, $fullpath, ceil(REGENERATE_PICTURES_QUALITY / 100 * 9));
-                break;
-        }
-        imagedestroy($im);
-
-        return $result;
-    }
-
-    /**
-     * Create a directory for an article.
-     *
-     * @param $id ID of the article
-     *
-     * @return string
-     */
-    private static function _createAssetsDirectory($id)
-    {
-        $assets_path = ABS_PATH;
-        if (!is_dir($assets_path)) {
-            mkdir($assets_path, 0715);
-        }
-
-        $article_directory = $assets_path.$id;
-        if (!is_dir($article_directory)) {
-            mkdir($article_directory, 0715);
-        }
-
-        return $article_directory;
-    }
-
-    /**
-     * Remove the directory.
-     *
-     * @param $directory
-     *
-     * @return bool
-     */
-    public static function removeDirectory($directory)
-    {
-        if (is_dir($directory)) {
-            $files = array_diff(scandir($directory), array('.', '..'));
-            foreach ($files as $file) {
-                (is_dir("$directory/$file")) ? self::removeDirectory("$directory/$file") : unlink("$directory/$file");
-            }
-
-            return rmdir($directory);
-        }
-    }
 }
diff --git a/src/Wallabag/CoreBundle/Helper/DownloadImages.php b/src/Wallabag/CoreBundle/Helper/DownloadImages.php
new file mode 100644
index 00000000..32a9dbb2
--- /dev/null
+++ b/src/Wallabag/CoreBundle/Helper/DownloadImages.php
@@ -0,0 +1,147 @@
+<?php
+
+namespace Wallabag\CoreBundle\Helper;
+
+use Psr\Log\LoggerInterface as Logger;
+use Symfony\Component\DomCrawler\Crawler;
+
+define('REGENERATE_PICTURES_QUALITY', 75);
+
+class DownloadImages {
+    private $folder;
+    private $url;
+    private $html;
+    private $fileName;
+    private $logger;
+
+    public function __construct($html, $url, Logger $logger) {
+        $this->html = $html;
+        $this->url = $url;
+        $this->setFolder();
+        $this->logger = $logger;
+    }
+
+    public function setFolder($folder = "assets/images") {
+        // if folder doesn't exist, attempt to create one and store the folder name in property $folder
+        if(!file_exists($folder)) {
+            mkdir($folder);
+        }
+        $this->folder = $folder;
+    }
+
+    public function process() {
+        //instantiate the symfony DomCrawler Component
+        $crawler = new Crawler($this->html);
+        // create an array of all scrapped image links
+        $this->logger->log('debug', 'Finding images inside document');
+        $result = $crawler
+            ->filterXpath('//img')
+            ->extract(array('src'));
+
+        // download and save the image to the folder
+        foreach ($result as $image) {
+            $file = file_get_contents($image);
+
+            // Checks
+            $absolute_path = self::getAbsoluteLink($image, $this->url);
+            $filename = basename(parse_url($absolute_path, PHP_URL_PATH));
+            $fullpath = $this->folder."/".$filename;
+            self::checks($file, $fullpath, $absolute_path);
+            $this->html = str_replace($image, $fullpath, $this->html);
+        }
+
+        return $this->html;
+    }
+
+    private function checks($rawdata, $fullpath, $absolute_path) {
+        $fullpath = urldecode($fullpath);
+
+        if (file_exists($fullpath)) {
+            unlink($fullpath);
+        }
+
+        // check extension
+        $this->logger->log('debug','Checking extension');
+
+        $file_ext = strrchr($fullpath, '.');
+        $whitelist = array('.jpg', '.jpeg', '.gif', '.png');
+        if (!(in_array($file_ext, $whitelist))) {
+            $this->logger->log('debug','processed image with not allowed extension. Skipping '.$fullpath);
+
+            return false;
+        }
+
+        // check headers
+        $this->logger->log('debug','Checking headers');
+        $imageinfo = getimagesize($absolute_path);
+        if ($imageinfo['mime'] != 'image/gif' && $imageinfo['mime'] != 'image/jpeg' && $imageinfo['mime'] != 'image/jpg' && $imageinfo['mime'] != 'image/png') {
+            $this->logger->log('debug','processed image with bad header. Skipping '.$fullpath);
+
+            return false;
+        }
+
+        // regenerate image
+        $this->logger->log('debug','regenerating image');
+        $im = imagecreatefromstring($rawdata);
+        if ($im === false) {
+            $this->logger->log('error','error while regenerating image '.$fullpath);
+
+            return false;
+        }
+
+        switch ($imageinfo['mime']) {
+            case 'image/gif':
+                $result = imagegif($im, $fullpath);
+                $this->logger->log('debug','Re-creating gif');
+                break;
+            case 'image/jpeg':
+            case 'image/jpg':
+                $result = imagejpeg($im, $fullpath, REGENERATE_PICTURES_QUALITY);
+                $this->logger->log('debug','Re-creating jpg');
+                break;
+            case 'image/png':
+                $this->logger->log('debug','Re-creating png');
+                $result = imagepng($im, $fullpath, ceil(REGENERATE_PICTURES_QUALITY / 100 * 9));
+                break;
+        }
+        imagedestroy($im);
+
+        return $result;
+    }
+
+    private static function getAbsoluteLink($relativeLink, $url)
+    {
+        /* return if already absolute URL */
+        if (parse_url($relativeLink, PHP_URL_SCHEME) != '') {
+            return $relativeLink;
+        }
+
+        /* queries and anchors */
+        if ($relativeLink[0] == '#' || $relativeLink[0] == '?') {
+            return $url.$relativeLink;
+        }
+
+        /* parse base URL and convert to local variables:
+           $scheme, $host, $path */
+        extract(parse_url($url));
+
+        /* remove non-directory element from path */
+        $path = preg_replace('#/[^/]*$#', '', $path);
+
+        /* destroy path if relative url points to root */
+        if ($relativeLink[0] == '/') {
+            $path = '';
+        }
+
+        /* dirty absolute URL */
+        $abs = $host.$path.'/'.$relativeLink;
+
+        /* replace '//' or '/./' or '/foo/../' with '/' */
+        $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
+        for ($n = 1; $n > 0; $abs = preg_replace($re, '/', $abs, -1, $n)) {
+        }
+
+        /* absolute URL is ready! */
+        return $scheme.'://'.$abs;
+    }
+}