show animated gifs on public sharing page

apps/files_sharing/js/public.js

@@ -97,7 +97,17 @@ OCA.Sharing.PublicApp = {
 		};
 
 		var img = $('<img class="publicpreview" alt="">');
-		if (previewSupported === 'true' || mimetype.substr(0, mimetype.indexOf('/')) === 'image' && mimetype !== 'image/svg+xml') {
+
+		var fileSize = parseInt($('#filesize').val(), 10);
+		var maxGifSize = parseInt($('#maxSizeAnimateGif').val(), 10);
+
+		if (mimetype === 'image/gif' &&
+			(maxGifSize === -1 || fileSize <= (maxGifSize * 1024 * 1024))) {
+			img.attr('src', $('#downloadURL').val());
+			img.appendTo('#imgframe');
+		} else if (previewSupported === 'true' ||
+			mimetype.substr(0, mimetype.indexOf('/')) === 'image' &&
+			mimetype !== 'image/svg+xml') {
 			img.attr('src', OC.filePath('files_sharing', 'ajax', 'publicpreview.php') + '?' + OC.buildQueryString(params));
 			img.appendTo('#imgframe');
 		} else if (mimetype.substr(0, mimetype.indexOf('/')) !== 'video') {

apps/files_sharing/lib/controllers/sharecontroller.php

@@ -176,7 +176,9 @@ class ShareController extends Controller {
 		$shareTmpl['server2serversharing'] = Helper::isOutgoingServer2serverShareEnabled();
 		$shareTmpl['protected'] = isset($linkItem['share_with']) ? 'true' : 'false';
 		$shareTmpl['dir'] = '';
-		$shareTmpl['fileSize'] = \OCP\Util::humanFileSize(\OC\Files\Filesystem::filesize($originalSharePath));
+		$nonHumanFileSize = \OC\Files\Filesystem::filesize($originalSharePath);
+		$shareTmpl['nonHumanFileSize'] = $nonHumanFileSize;
+		$shareTmpl['fileSize'] = \OCP\Util::humanFileSize($nonHumanFileSize);
 
 		// Show file list
 		if (Filesystem::is_dir($originalSharePath)) {
@@ -202,6 +204,7 @@ class ShareController extends Controller {
 		}
 
 		$shareTmpl['downloadURL'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.sharecontroller.downloadShare', array('token' => $token));
+		$shareTmpl['maxSizeAnimateGif'] = $this->config->getSystemValue('max_filesize_animated_gifs_public_sharing', 10);
 
 		return new TemplateResponse($this->appName, 'public', $shareTmpl, 'base');
 	}

apps/files_sharing/templates/public.php

@@ -40,6 +40,8 @@ $previewSupported = OC\Preview::isMimeSupported($_['mimetype']) ? 'true' : 'fals
 <input type="hidden" name="mimetype" value="<?php p($_['mimetype']) ?>" id="mimetype">
 <input type="hidden" name="previewSupported" value="<?php p($previewSupported); ?>" id="previewSupported">
 <input type="hidden" name="mimetypeIcon" value="<?php p(OC_Helper::mimetypeIcon($_['mimetype'])); ?>" id="mimetypeIcon">
+<input type="hidden" name="filesize" value="<?php p($_['nonHumanFileSize']); ?>" id="filesize">
+<input type="hidden" name="maxSizeAnimateGif" value="<?php p($_['maxSizeAnimateGif']); ?>" id="maxSizeAnimateGif">
 
 
 <header><div id="header" class="<?php p((isset($_['folder']) ? 'share-folder' : 'share-file')) ?>">

apps/files_sharing/tests/controller/sharecontroller.php

@@ -155,7 +155,9 @@ class ShareControllerTest extends \PHPUnit_Framework_TestCase {
 			'protected' => 'true',
 			'dir' => '',
 			'downloadURL' => null,
-			'fileSize' => '33 B'
+			'fileSize' => '33 B',
+			'nonHumanFileSize' => 33,
+			'maxSizeAnimateGif' => 10,
 		);
 		$expectedResponse = new TemplateResponse($this->container['AppName'], 'public', $sharedTmplParams, 'base');
 		$this->assertEquals($expectedResponse, $response);

config/config.sample.php

@@ -943,6 +943,16 @@ $CONFIG = array(
  */
 'forwarded_for_headers' => array('HTTP_X_FORWARDED', 'HTTP_FORWARDED_FOR'),
 
+/**
+ * max file size for animating gifs on public-sharing-site.
+ * If the gif is bigger, it'll show a static preview
+ *
+ * Value represents the maximum filesize in megabytes
+ * Default is 10
+ * Set to -1 for no limit
+ */
+'max_filesize_animated_gifs_public_sharing' => 10,
+
 /**
  * This entry is just here to show a warning in case somebody copied the sample
  * configuration. DO NOT ADD THIS SWITCH TO YOUR CONFIGURATION!