From eb0446fdc58c40a477a812456ec7e1de9ddfcd21 Mon Sep 17 00:00:00 2001
From: karakayasemi <karakayasemi@itu.edu.tr>
Date: Mon, 17 Jun 2019 21:27:07 +0300
Subject: [PATCH] set default expiration date if expiration date is enforced
 and it is new share

---
 lib/private/Share20/Manager.php   | 21 +++++++++++++++++++++
 tests/lib/Share20/ManagerTest.php | 12 ++++++++----
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/lib/private/Share20/Manager.php b/lib/private/Share20/Manager.php
index b694023c3948..42c58fd427c9 100644
--- a/lib/private/Share20/Manager.php
+++ b/lib/private/Share20/Manager.php
@@ -331,6 +331,13 @@ protected function validateExpirationDate(\OCP\Share\IShare $share) {
 
 		// If we enforce the expiration date check that is does not exceed
 		if ($this->shareApiLinkDefaultExpireDateEnforced()) {
+			// If expiredate is empty and it is a new share, set a default one if there is a default
+			if ($this->isNewShare($share) && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
+				$expirationDate = new \DateTime();
+				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->add(new \DateInterval('P'.$this->shareApiLinkDefaultExpireDays().'D'));
+			}
+
 			if ($expirationDate === null) {
 				throw new \InvalidArgumentException('Expiration date is enforced');
 			}
@@ -1549,4 +1556,18 @@ private function hashAttributes($perms) {
 
 		return \md5(\json_encode($perms->toArray()));
 	}
+
+	/**
+	 * @param IShare $share
+	 * @return boolean
+	 */
+	private function isNewShare(IShare $share) {
+		$fullId = null;
+		try {
+			$fullId = $share->getFullId();
+		} catch (\UnexpectedValueException $e) {
+			// This is a new share
+		}
+		return ($fullId === null);
+	}
 }
diff --git a/tests/lib/Share20/ManagerTest.php b/tests/lib/Share20/ManagerTest.php
index 2600bde59c9a..2e04f54ecd26 100644
--- a/tests/lib/Share20/ManagerTest.php
+++ b/tests/lib/Share20/ManagerTest.php
@@ -67,7 +67,7 @@ class ManagerTest extends \Test\TestCase {
 	protected $manager;
 	/** @var ILogger | \PHPUnit\Framework\MockObject\MockObject */
 	protected $logger;
-	/** @var IConfig */
+	/** @var IConfig | \PHPUnit\Framework\MockObject\MockObject */
 	protected $config;
 	/** @var ISecureRandom */
 	protected $secureRandom;
@@ -939,19 +939,23 @@ public function testvalidateExpirationDateEnforceButNotEnabledAndNotSet() {
 		$this->assertNull($share->getExpirationDate());
 	}
 
-	/**
-	 * @expectedException \InvalidArgumentException
-	 */
 	public function testvalidateExpirationDateEnforceButNotSetNewShare() {
 		$share = $this->manager->newShare();
 
 		$this->config->method('getAppValue')
 			->will($this->returnValueMap([
+				['core', 'shareapi_enforce_expire_date', 'no', 'yes'],
+				['core', 'shareapi_expire_after_n_days', '7', '3'],
 				['core', 'shareapi_default_expire_date', 'no', 'yes'],
 				['core', 'shareapi_enforce_expire_date', 'no', 'yes'],
 			]));
 
+		$expected = new \DateTime();
+		$expected->setTime(0, 0, 0);
+		$expected->add(new \DateInterval('P3D'));
 		$this->invokePrivate($this->manager, 'validateExpirationDate', [$share]);
+		$this->assertNotNull($share->getExpirationDate());
+		$this->assertEquals($expected, $share->getExpirationDate());
 	}
 
 	public function testvalidateExpirationDateEnforceToFarIntoFuture() {