From d7093ed24b8efc2512e4f73d485c05340d88d789 Mon Sep 17 00:00:00 2001
From: Louis Chemineau <louis@chmn.me>
Date: Wed, 26 Jun 2024 17:18:47 +0200
Subject: [PATCH] fix(files_sharing): Store the expiration date relative to the
 server's timezone

This is needed as we want to store the difference between the server's and the user's timezones.

Signed-off-by: Louis Chemineau <louis@chmn.me>
---
 .../lib/Controller/ShareAPIController.php     |  3 --
 lib/private/Share20/DefaultShareProvider.php  | 32 +++++++++++++------
 lib/private/Share20/Manager.php               | 19 +++++------
 3 files changed, 30 insertions(+), 24 deletions(-)

diff --git a/apps/files_sharing/lib/Controller/ShareAPIController.php b/apps/files_sharing/lib/Controller/ShareAPIController.php
index cab989aeb4330..bd95c41283350 100644
--- a/apps/files_sharing/lib/Controller/ShareAPIController.php
+++ b/apps/files_sharing/lib/Controller/ShareAPIController.php
@@ -1656,9 +1656,6 @@ private function parseDate(string $expireDate): \DateTime {
 			throw new \Exception('Invalid date. Format must be YYYY-MM-DD');
 		}
 
-		// Use server timezone to store the date
-		$date->setTimezone(new \DateTimeZone(date_default_timezone_get()));
-
 		return $date;
 	}
 
diff --git a/lib/private/Share20/DefaultShareProvider.php b/lib/private/Share20/DefaultShareProvider.php
index 55ac3eda644e1..fd22095b420eb 100644
--- a/lib/private/Share20/DefaultShareProvider.php
+++ b/lib/private/Share20/DefaultShareProvider.php
@@ -137,22 +137,28 @@ public function create(\OCP\Share\IShare $share) {
 		$qb->insert('share');
 		$qb->setValue('share_type', $qb->createNamedParameter($share->getShareType()));
 
+		$expirationDate = $share->getExpirationDate();
+		if ($expirationDate !== null) {
+			$expirationDate = clone $expirationDate;
+			$expirationDate->setTimezone(new \DateTimeZone(date_default_timezone_get()));
+		}
+
 		if ($share->getShareType() === IShare::TYPE_USER) {
 			//Set the UID of the user we share with
 			$qb->setValue('share_with', $qb->createNamedParameter($share->getSharedWith()));
 			$qb->setValue('accepted', $qb->createNamedParameter(IShare::STATUS_PENDING));
 
 			//If an expiration date is set store it
-			if ($share->getExpirationDate() !== null) {
-				$qb->setValue('expiration', $qb->createNamedParameter($share->getExpirationDate(), 'datetime'));
+			if ($expirationDate !== null) {
+				$qb->setValue('expiration', $qb->createNamedParameter($expirationDate, 'datetime'));
 			}
 		} elseif ($share->getShareType() === IShare::TYPE_GROUP) {
 			//Set the GID of the group we share with
 			$qb->setValue('share_with', $qb->createNamedParameter($share->getSharedWith()));
 
 			//If an expiration date is set store it
-			if ($share->getExpirationDate() !== null) {
-				$qb->setValue('expiration', $qb->createNamedParameter($share->getExpirationDate(), 'datetime'));
+			if ($expirationDate !== null) {
+				$qb->setValue('expiration', $qb->createNamedParameter($expirationDate, 'datetime'));
 			}
 		} elseif ($share->getShareType() === IShare::TYPE_LINK) {
 			//set label for public link
@@ -168,8 +174,8 @@ public function create(\OCP\Share\IShare $share) {
 			$qb->setValue('password_by_talk', $qb->createNamedParameter($share->getSendPasswordByTalk(), IQueryBuilder::PARAM_BOOL));
 
 			//If an expiration date is set store it
-			if ($share->getExpirationDate() !== null) {
-				$qb->setValue('expiration', $qb->createNamedParameter($share->getExpirationDate(), 'datetime'));
+			if ($expirationDate !== null) {
+				$qb->setValue('expiration', $qb->createNamedParameter($expirationDate, 'datetime'));
 			}
 
 			if (method_exists($share, 'getParent')) {
@@ -249,6 +255,12 @@ public function update(\OCP\Share\IShare $share) {
 
 		$shareAttributes = $this->formatShareAttributes($share->getAttributes());
 
+		$expirationDate = $share->getExpirationDate();
+		if ($expirationDate !== null) {
+			$expirationDate = clone $expirationDate;
+			$expirationDate->setTimezone(new \DateTimeZone(date_default_timezone_get()));
+		}
+
 		if ($share->getShareType() === IShare::TYPE_USER) {
 			/*
 			 * We allow updating the recipient on user shares.
@@ -263,7 +275,7 @@ public function update(\OCP\Share\IShare $share) {
 				->set('attributes', $qb->createNamedParameter($shareAttributes))
 				->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
 				->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
-				->set('expiration', $qb->createNamedParameter($share->getExpirationDate(), IQueryBuilder::PARAM_DATE))
+				->set('expiration', $qb->createNamedParameter($expirationDate, IQueryBuilder::PARAM_DATE))
 				->set('note', $qb->createNamedParameter($share->getNote()))
 				->set('accepted', $qb->createNamedParameter($share->getStatus()))
 				->execute();
@@ -277,7 +289,7 @@ public function update(\OCP\Share\IShare $share) {
 				->set('attributes', $qb->createNamedParameter($shareAttributes))
 				->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
 				->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
-				->set('expiration', $qb->createNamedParameter($share->getExpirationDate(), IQueryBuilder::PARAM_DATE))
+				->set('expiration', $qb->createNamedParameter($expirationDate, IQueryBuilder::PARAM_DATE))
 				->set('note', $qb->createNamedParameter($share->getNote()))
 				->execute();
 
@@ -292,7 +304,7 @@ public function update(\OCP\Share\IShare $share) {
 				->set('uid_initiator', $qb->createNamedParameter($share->getSharedBy()))
 				->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
 				->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
-				->set('expiration', $qb->createNamedParameter($share->getExpirationDate(), IQueryBuilder::PARAM_DATE))
+				->set('expiration', $qb->createNamedParameter($expirationDate, IQueryBuilder::PARAM_DATE))
 				->set('note', $qb->createNamedParameter($share->getNote()))
 				->execute();
 
@@ -319,7 +331,7 @@ public function update(\OCP\Share\IShare $share) {
 				->set('item_source', $qb->createNamedParameter($share->getNode()->getId()))
 				->set('file_source', $qb->createNamedParameter($share->getNode()->getId()))
 				->set('token', $qb->createNamedParameter($share->getToken()))
-				->set('expiration', $qb->createNamedParameter($share->getExpirationDate(), IQueryBuilder::PARAM_DATE))
+				->set('expiration', $qb->createNamedParameter($expirationDate, IQueryBuilder::PARAM_DATE))
 				->set('note', $qb->createNamedParameter($share->getNote()))
 				->set('label', $qb->createNamedParameter($share->getLabel()))
 				->set('hide_download', $qb->createNamedParameter($share->getHideDownload() ? 1 : 0), IQueryBuilder::PARAM_INT)
diff --git a/lib/private/Share20/Manager.php b/lib/private/Share20/Manager.php
index b797b0b56988c..af31226cf08e7 100644
--- a/lib/private/Share20/Manager.php
+++ b/lib/private/Share20/Manager.php
@@ -310,8 +310,8 @@ protected function validateExpirationDateInternal(IShare $share) {
 
 		// If $expirationDate is falsy, noExpirationDate is true and expiration not enforced
 		// Then skip expiration date validation as null is accepted
-		if (!($share->getNoExpirationDate() && !$isEnforced)) {
-			if ($expirationDate != null) {
+		if (!$share->getNoExpirationDate() || $isEnforced) {
+			if ($expirationDate !== null) {
 				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
 
@@ -394,7 +394,7 @@ protected function validateExpirationDateLink(IShare $share) {
 			if ($expirationDate !== null) {
 				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
-	
+
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
 				if ($date >= $expirationDate) {
@@ -410,24 +410,24 @@ protected function validateExpirationDateLink(IShare $share) {
 			} catch (\UnexpectedValueException $e) {
 				// This is a new share
 			}
-	
+
 			if ($fullId === null && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
 				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$expirationDate->setTime(0, 0, 0);
-	
+
 				$days = (int)$this->config->getAppValue('core', 'link_defaultExpDays', (string)$this->shareApiLinkDefaultExpireDays());
 				if ($days > $this->shareApiLinkDefaultExpireDays()) {
 					$days = $this->shareApiLinkDefaultExpireDays();
 				}
 				$expirationDate->add(new \DateInterval('P' . $days . 'D'));
 			}
-	
+
 			// If we enforce the expiration date check that is does not exceed
 			if ($isEnforced) {
 				if (empty($expirationDate)) {
 					throw new \InvalidArgumentException('Expiration date is enforced');
 				}
-	
+
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
 				$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));
@@ -452,9 +452,6 @@ protected function validateExpirationDateLink(IShare $share) {
 			throw new \Exception($message);
 		}
 
-		if ($expirationDate instanceof \DateTime) {
-			$expirationDate->setTimezone(new \DateTimeZone(date_default_timezone_get()));
-		}
 		$share->setExpirationDate($expirationDate);
 
 		return $share;
@@ -812,7 +809,7 @@ protected function sendMailNotification(IL10N $l,
 		$link,
 		$initiator,
 		$shareWith,
-		\DateTime $expiration = null,
+		?\DateTime $expiration = null,
 		$note = '') {
 		$initiatorUser = $this->userManager->get($initiator);
 		$initiatorDisplayName = ($initiatorUser instanceof IUser) ? $initiatorUser->getDisplayName() : $initiator;