Allow to directly set the expireDate on a new (link)share

Since this extends the API we now properly parse the date. We only
accept valid ISO 8601 Dates (YYYY-MM-DD).

Currently this only works for link shares (it is just ignored for other
shares). Since we do not have user/group/federated expiring shares yet.

* Tests added

apps/files_sharing/api/local.php

@@ -258,6 +258,7 @@ class Local {
 		$itemSource = self::getFileId($path);
 		$itemSourceName = $itemSource;
 		$itemType = self::getItemType($path);
+		$expirationDate = null;
 
 		if($itemSource === null) {
 			return new \OC_OCS_Result(null, 404, "wrong path, file/folder doesn't exist.");
@@ -286,6 +287,14 @@ class Local {
 				// read, create, update (7) if public upload is enabled or
 				// read (1) if public upload is disabled
 				$permissions = $publicUpload === 'true' ? 7 : 1;
+
+				// Get the expiration date
+				try {
+					$expirationDate = isset($_POST['expireDate']) ? self::parseDate($_POST['expireDate']) : null;
+				} catch (\Exception $e) {
+					return new \OC_OCS_Result(null, 404, 'Invalid Date');
+				}
+
 				break;
 			default:
 				return new \OC_OCS_Result(null, 400, "unknown share type");
@@ -302,8 +311,9 @@ class Local {
 					$shareType,
 					$shareWith,
 					$permissions,
-					$itemSourceName
+					$itemSourceName,
-					);
+					$expirationDate
+			);
 		} catch (HintException $e) {
 			return new \OC_OCS_Result(null, 400, $e->getHint());
 		} catch (\Exception $e) {
@@ -537,6 +547,30 @@ class Local {
 		}
 	}
 
+	/**
+	 * Make sure that the passed date is valid ISO 8601
+	 * So YYYY-MM-DD
+	 * If not throw an exception
+	 *
+	 * @param string $expireDate
+	 *
+	 * @throws \Exception
+	 * @return \DateTime
+	 */
+	private static function parseDate($expireDate) {
+		if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $expireDate) === 0) {
+			throw new \Exception();
+		}
+
+		$date = new \DateTime($expireDate);
+
+		if ($date === false) {
+			throw new \Exception();
+		}
+
+		return $date;
+	}
+
 	/**
 	 * get file ID from a given path
 	 * @param string $path

apps/files_sharing/tests/api.php

@@ -1487,4 +1487,60 @@ class Test_Files_Sharing_Api extends TestCase {
 		$config->setAppValue('core', 'shareapi_enforce_expire_date', 'no');
 
 	}
+
+	public function datesProvider() {
+		$date = new \DateTime();
+		$date->add(new \DateInterval('P5D'));
+
+		$year = (int)$date->format('Y');
+
+		return [
+			[$date->format('Y-m-d'), true],
+			[$year+1 . '-1-1', false],
+			[$date->format('Y-m-dTH:m'), false],
+			['abc', false],
+			[$date->format('Y-m-d') . 'xyz', false],
+		];
+	}
+
+	/**
+	 * Make sure only ISO 8601 dates are accepted
+	 *
+	 * @dataProvider datesProvider
+	 */
+	public function testPublicLinkExpireDate($date, $valid) {
+		$_POST['path'] = $this->folder;
+		$_POST['shareType'] = \OCP\Share::SHARE_TYPE_LINK;
+		$_POST['expireDate'] = $date;
+
+		$result = \OCA\Files_Sharing\API\Local::createShare([]);
+
+		if ($valid === false) {
+			$this->assertFalse($result->succeeded());
+			$this->assertEquals(404, $result->getStatusCode());
+			$this->assertEquals('Invalid Date', $result->getMeta()['message']);
+			return;
+		}
+
+		$this->assertTrue($result->succeeded());
+
+		$data = $result->getData();
+		$this->assertTrue(is_string($data['token']));
+
+		// check for correct link
+		$url = \OC::$server->getURLGenerator()->getAbsoluteURL('/index.php/s/' . $data['token']);
+		$this->assertEquals($url, $data['url']);
+
+
+		$share = $this->getShareFromId($data['id']);
+		$items = \OCP\Share::getItemShared('file', $share['item_source']);
+		$this->assertTrue(!empty($items));
+
+		$item = reset($items);
+		$this->assertTrue(is_array($item));
+		$this->assertEquals($date, substr($item['expiration'], 0, 10));
+
+		$fileinfo = $this->view->getFileInfo($this->folder);
+		\OCP\Share::unshare('folder', $fileinfo['fileid'], \OCP\Share::SHARE_TYPE_LINK, null);
+	}
 }