Resize maximum dimensions for pictures coming from SocialApiService

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

2 files changed, 65 insertions, 2 deletions

diff --git a/lib/Service/ImageResizer.php b/lib/Service/ImageResizer.php
new file mode 100644
index 00000000..10581d09
--- /dev/null
+++ b/lib/Service/ImageResizer.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2022 Thomas Citharel <nextcloud@tcit.fr>
+ *
+ * @author Thomas Citharel <nextcloud@tcit.fr>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Contacts\Service;
+
+use OCP\Image;
+
+class ImageResizer {
+	public const RESIZE_MAX_X = 256;
+	public const RESIZE_MAX_Y = 256;
+
+	/**
+	 * @param string $socialData
+	 * @return null|string
+	 */
+	public function resizeImage(string $socialData) {
+		$image = new Image();
+
+		$image->loadFromData($socialData);
+
+		if ($image->valid()) {
+			$image->scaleDownToFit(self::RESIZE_MAX_X, self::RESIZE_MAX_Y);
+			return $image->data();
+		}
+		return null;
+	}
+}
diff --git a/lib/Service/SocialApiService.php b/lib/Service/SocialApiService.php
index 9d776bd3..9a27a93d 100644
--- a/lib/Service/SocialApiService.php
+++ b/lib/Service/SocialApiService.php
@@ -57,7 +57,8 @@ class SocialApiService {
 	private $davBackend;
 	/** @var ITimeFactory */
 	private $timeFactory;
-
+	/** @var ImageResizer */
+	private $imageResizer;
 
 	public function __construct(
 					CompositeSocialProvider $socialProvider,
@@ -67,7 +68,8 @@ class SocialApiService {
 					IL10N $l10n,
 					IURLGenerator $urlGen,
 					CardDavBackend $davBackend,
-					ITimeFactory $timeFactory) {
+					ITimeFactory $timeFactory,
+					ImageResizer $imageResizer) {
 		$this->appName = Application::APP_ID;
 		$this->socialProvider = $socialProvider;
 		$this->manager = $manager;
@@ -77,6 +79,7 @@ class SocialApiService {
 		$this->urlGen = $urlGen;
 		$this->davBackend = $davBackend;
 		$this->timeFactory = $timeFactory;
+		$this->imageResizer = $imageResizer;
 	}
 
 
@@ -224,6 +227,16 @@ class SocialApiService {
 				return new JSONResponse([], Http::STATUS_NOT_FOUND);
 			}
 
+			if (is_resource($socialdata)) {
+				$socialdata = stream_get_contents($socialdata);
+			}
+
+			$socialdata = $this->imageResizer->resizeImage($socialdata);
+
+			if (!$socialdata) {
+				return new JSONResponse([], Http::STATUS_INTERNAL_SERVER_ERROR);
+			}
+
 			// update contact
 			$changes = [];
 			$changes['URI'] = $contact['URI'];