Delete a link share if it is expired on access

If we access a link share we should check if it has expired already.
If so we should remove it and throw a ShareNotFound exception

lib/private/share20/manager.php

@@ -831,7 +831,11 @@ class Manager implements IManager {
 
 		$share = $provider->getShareByToken($token);
 
-		//TODO check if share expired
+		if ($share->getExpirationDate() !== null &&
+			$share->getExpirationDate() <= new \DateTime()) {
+			$this->deleteShare($share);
+			throw new ShareNotFound();
+		}
 
 		return $share;
 	}

tests/lib/share20/managertest.php

@@ -22,6 +22,7 @@ namespace Test\Share20;
 
 use OCP\Files\IRootFolder;
 use OCP\IUserManager;
+use OCP\Share\Exceptions\ShareNotFound;
 use OCP\Share\IProviderFactory;
 use OCP\Share\IShare;
 use OC\Share20\Manager;
@@ -1704,6 +1705,48 @@ class ManagerTest extends \Test\TestCase {
 		$this->assertSame($share, $ret);
 	}
 
+	/**
+	 * @expectedException \OCP\Share\Exceptions\ShareNotFound
+	 */
+	public function testGetShareByTokenExpired() {
+		$manager = $this->createManagerMock()
+			->setMethods(['deleteShare'])
+			->getMock();
+
+		$date = new \DateTime();
+		$date->setTime(0,0,0);
+		$share = $this->manager->newShare();
+		$share->setExpirationDate($date);
+
+		$this->defaultProvider->expects($this->once())
+			->method('getShareByToken')
+			->with('expiredToken')
+			->willReturn($share);
+
+		$manager->expects($this->once())
+			->method('deleteShare')
+			->with($this->equalTo($share));
+
+		$manager->getShareByToken('expiredToken');
+	}
+
+	public function testGetShareByTokenNotExpired() {
+		$date = new \DateTime();
+		$date->setTime(0,0,0);
+		$date->add(new \DateInterval('P2D'));
+		$share = $this->manager->newShare();
+		$share->setExpirationDate($date);
+
+		$this->defaultProvider->expects($this->once())
+			->method('getShareByToken')
+			->with('expiredToken')
+			->willReturn($share);
+
+		$res = $this->manager->getShareByToken('expiredToken');
+
+		$this->assertSame($share, $res);
+	}
+
 	public function testCheckPasswordNoLinkShare() {
 		$share = $this->getMock('\OCP\Share\IShare');
 		$share->method('getShareType')->willReturn(\OCP\Share::SHARE_TYPE_USER);