From 36618b111fde55ba5c8ddedc294e58927257d107 Mon Sep 17 00:00:00 2001
From: Morris Jobke <hey@morrisjobke.de>
Date: Thu, 11 Apr 2019 09:49:21 +0200
Subject: [PATCH 1/2] Pass old value to user triggerChange hook

Signed-off-by: Morris Jobke <hey@morrisjobke.de>
---
 apps/user_ldap/lib/User/User.php | 2 +-
 lib/private/User/User.php        | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/apps/user_ldap/lib/User/User.php b/apps/user_ldap/lib/User/User.php
index d68d8b35d1..5c89950e08 100644
--- a/apps/user_ldap/lib/User/User.php
+++ b/apps/user_ldap/lib/User/User.php
@@ -436,7 +436,7 @@ class User {
 			if (!empty($oldName) && $user instanceof \OC\User\User) {
 				// if it was empty, it would be a new record, not a change emitting the trigger could
 				// potentially cause a UniqueConstraintViolationException, depending on some factors.
-				$user->triggerChange('displayName', $displayName);
+				$user->triggerChange('displayName', $displayName, $oldName);
 			}
 		}
 		return $displayName;
diff --git a/lib/private/User/User.php b/lib/private/User/User.php
index 17fa022b1b..a47ef8dc54 100644
--- a/lib/private/User/User.php
+++ b/lib/private/User/User.php
@@ -145,9 +145,8 @@ class User implements IUser {
 				$this->triggerChange('displayName', $displayName);
 			}
 			return $result !== false;
-		} else {
-			return false;
 		}
+		return false;
 	}
 
 	/**
@@ -365,7 +364,8 @@ class User implements IUser {
 		$oldStatus = $this->isEnabled();
 		$this->enabled = $enabled;
 		if ($oldStatus !== $this->enabled) {
-			$this->triggerChange('enabled', $enabled);
+			// TODO: First change the value, then trigger the event as done for all other properties.
+			$this->triggerChange('enabled', $enabled, $oldStatus);
 			$this->config->setUserValue($this->uid, 'core', 'enabled', $enabled ? 'true' : 'false');
 		}
 	}
@@ -409,7 +409,7 @@ class User implements IUser {
 		}
 		$this->config->setUserValue($this->uid, 'files', 'quota', $quota);
 		if($quota !== $oldQuota) {
-			$this->triggerChange('quota', $quota);
+			$this->triggerChange('quota', $quota, $oldQuota);
 		}
 	}
 

From f420647add0f5ffc917301335d82d951a1df502e Mon Sep 17 00:00:00 2001
From: Leon Klingele <leon@struktur.de>
Date: Wed, 6 Mar 2019 13:07:41 +0100
Subject: [PATCH 2/2] lib/private/User: do not change user properties if value
 has not changed

Signed-off-by: Morris Jobke <hey@morrisjobke.de>
---
 lib/private/User/User.php   | 12 ++++++------
 tests/lib/User/UserTest.php | 20 ++++----------------
 2 files changed, 10 insertions(+), 22 deletions(-)

diff --git a/lib/private/User/User.php b/lib/private/User/User.php
index a47ef8dc54..48c913db2a 100644
--- a/lib/private/User/User.php
+++ b/lib/private/User/User.php
@@ -158,12 +158,12 @@ class User implements IUser {
 	 */
 	public function setEMailAddress($mailAddress) {
 		$oldMailAddress = $this->getEMailAddress();
-		if($mailAddress === '') {
-			$this->config->deleteUserValue($this->uid, 'settings', 'email');
-		} else {
-			$this->config->setUserValue($this->uid, 'settings', 'email', $mailAddress);
-		}
 		if($oldMailAddress !== $mailAddress) {
+			if($mailAddress === '') {
+				$this->config->deleteUserValue($this->uid, 'settings', 'email');
+			} else {
+				$this->config->setUserValue($this->uid, 'settings', 'email', $mailAddress);
+			}
 			$this->triggerChange('eMailAddress', $mailAddress, $oldMailAddress);
 		}
 	}
@@ -407,8 +407,8 @@ class User implements IUser {
 			$quota = OC_Helper::computerFileSize($quota);
 			$quota = OC_Helper::humanFileSize($quota);
 		}
-		$this->config->setUserValue($this->uid, 'files', 'quota', $quota);
 		if($quota !== $oldQuota) {
+			$this->config->setUserValue($this->uid, 'files', 'quota', $quota);
 			$this->triggerChange('quota', $quota, $oldQuota);
 		}
 	}
diff --git a/tests/lib/User/UserTest.php b/tests/lib/User/UserTest.php
index 16fde814b8..a800e79037 100644
--- a/tests/lib/User/UserTest.php
+++ b/tests/lib/User/UserTest.php
@@ -676,14 +676,8 @@ class UserTest extends TestCase {
 		$config->expects($this->any())
 			->method('getUserValue')
 			->willReturn('foo@bar.com');
-		$config->expects($this->once())
-			->method('setUserValue')
-			->with(
-				'foo',
-				'settings',
-				'email',
-				'foo@bar.com'
-			);
+		$config->expects($this->never())
+			->method('setUserValue');
 
 		$user = new User('foo', $backend, $this->dispatcher, $emitter, $config);
 		$user->setEMailAddress('foo@bar.com');
@@ -741,14 +735,8 @@ class UserTest extends TestCase {
 		$config->expects($this->any())
 			->method('getUserValue')
 			->willReturn('23 TB');
-		$config->expects($this->once())
-			->method('setUserValue')
-			->with(
-				'foo',
-				'files',
-				'quota',
-				'23 TB'
-			);
+		$config->expects($this->never())
+			->method('setUserValue');
 
 		$user = new User('foo', $backend, $this->dispatcher, $emitter, $config);
 		$user->setQuota('23 TB');