Merge pull request #31839 from nextcloud/feat/metadata-server

Add a metadata service to store file metadata

56 files changed, 284 insertions, 52 deletions

diff --git a/apps/accessibility/composer/autoload.php b/apps/accessibility/composer/autoload.php
index f624ded3950..6f896b45abc 100644
--- a/apps/accessibility/composer/autoload.php
+++ b/apps/accessibility/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitAccessibility::getLoader();
diff --git a/apps/accessibility/composer/composer/autoload_real.php b/apps/accessibility/composer/composer/autoload_real.php
index a08983b79fe..8b2b83d3139 100644
--- a/apps/accessibility/composer/composer/autoload_real.php
+++ b/apps/accessibility/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitAccessibility
         spl_autoload_unregister(array('ComposerAutoloaderInitAccessibility', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitAccessibility::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitAccessibility::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/admin_audit/composer/autoload.php b/apps/admin_audit/composer/autoload.php
index 7970e9ebe12..d316fe42c51 100644
--- a/apps/admin_audit/composer/autoload.php
+++ b/apps/admin_audit/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitAdminAudit::getLoader();
diff --git a/apps/admin_audit/composer/composer/autoload_real.php b/apps/admin_audit/composer/composer/autoload_real.php
index ffbbdd4e269..bd7d1f99dd1 100644
--- a/apps/admin_audit/composer/composer/autoload_real.php
+++ b/apps/admin_audit/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitAdminAudit
         spl_autoload_unregister(array('ComposerAutoloaderInitAdminAudit', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitAdminAudit::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitAdminAudit::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/cloud_federation_api/composer/autoload.php b/apps/cloud_federation_api/composer/autoload.php
index fcf0f062846..fc52f01bfaf 100644
--- a/apps/cloud_federation_api/composer/autoload.php
+++ b/apps/cloud_federation_api/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitCloudFederationAPI::getLoader();
diff --git a/apps/cloud_federation_api/composer/composer/autoload_real.php b/apps/cloud_federation_api/composer/composer/autoload_real.php
index 1c7ec9607c2..53093c129e3 100644
--- a/apps/cloud_federation_api/composer/composer/autoload_real.php
+++ b/apps/cloud_federation_api/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitCloudFederationAPI
         spl_autoload_unregister(array('ComposerAutoloaderInitCloudFederationAPI', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitCloudFederationAPI::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitCloudFederationAPI::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/comments/composer/autoload.php b/apps/comments/composer/autoload.php
index c974072d6b7..46d800ddaa8 100644
--- a/apps/comments/composer/autoload.php
+++ b/apps/comments/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitComments::getLoader();
diff --git a/apps/comments/composer/composer/autoload_real.php b/apps/comments/composer/composer/autoload_real.php
index 8668cfb671e..7f9d22ca0a2 100644
--- a/apps/comments/composer/composer/autoload_real.php
+++ b/apps/comments/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitComments
         spl_autoload_unregister(array('ComposerAutoloaderInitComments', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitComments::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitComments::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/contactsinteraction/composer/autoload.php b/apps/contactsinteraction/composer/autoload.php
index 7bf597cd9cd..748e5f45fe9 100644
--- a/apps/contactsinteraction/composer/autoload.php
+++ b/apps/contactsinteraction/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitContactsInteraction::getLoader();
diff --git a/apps/contactsinteraction/composer/composer/autoload_real.php b/apps/contactsinteraction/composer/composer/autoload_real.php
index 8ba09879f54..09f95c83645 100644
--- a/apps/contactsinteraction/composer/composer/autoload_real.php
+++ b/apps/contactsinteraction/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitContactsInteraction
         spl_autoload_unregister(array('ComposerAutoloaderInitContactsInteraction', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitContactsInteraction::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitContactsInteraction::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/dav/composer/autoload.php b/apps/dav/composer/autoload.php
index 06b2e993e94..a3040af8caa 100644
--- a/apps/dav/composer/autoload.php
+++ b/apps/dav/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitDAV::getLoader();
diff --git a/apps/dav/composer/composer/autoload_real.php b/apps/dav/composer/composer/autoload_real.php
index 8416efa9d7e..4b2290344f5 100644
--- a/apps/dav/composer/composer/autoload_real.php
+++ b/apps/dav/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitDAV
         spl_autoload_unregister(array('ComposerAutoloaderInitDAV', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitDAV::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitDAV::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/dav/composer/composer/installed.php b/apps/dav/composer/composer/installed.php
index baf72c4fb34..628db5d793b 100644
--- a/apps/dav/composer/composer/installed.php
+++ b/apps/dav/composer/composer/installed.php
@@ -5,7 +5,7 @@
         'type' => 'library',
         'install_path' => __DIR__ . '/../',
         'aliases' => array(),
-        'reference' => 'e2c675724fc4ea50f1275bf0027b96f277c32578',
+        'reference' => '9586920c0ec4016864a2219e838fb272127822d8',
         'name' => '__root__',
         'dev' => false,
     ),
@@ -16,7 +16,7 @@
             'type' => 'library',
             'install_path' => __DIR__ . '/../',
             'aliases' => array(),
-            'reference' => 'e2c675724fc4ea50f1275bf0027b96f277c32578',
+            'reference' => '9586920c0ec4016864a2219e838fb272127822d8',
             'dev_requirement' => false,
         ),
     ),
diff --git a/apps/dav/lib/Connector/Sabre/Directory.php b/apps/dav/lib/Connector/Sabre/Directory.php
index 8b616b0cb8a..9e0b89596cd 100644
--- a/apps/dav/lib/Connector/Sabre/Directory.php
+++ b/apps/dav/lib/Connector/Sabre/Directory.php
@@ -34,6 +34,8 @@ namespace OCA\DAV\Connector\Sabre;
 
 use OC\Files\Mount\MoveableMount;
 use OC\Files\View;
+use OC\Metadata\FileMetadata;
+use OC\Metadata\MetadataGroup;
 use OCA\DAV\Connector\Sabre\Exception\FileLocked;
 use OCA\DAV\Connector\Sabre\Exception\Forbidden;
 use OCA\DAV\Connector\Sabre\Exception\InvalidPath;
@@ -73,6 +75,9 @@ class Directory extends \OCA\DAV\Connector\Sabre\Node implements \Sabre\DAV\ICol
 	 */
 	private $tree;
 
+	/** @var array<string, array<int, FileMetadata>> */
+	private array $metadata = [];
+
 	/**
 	 * Sets up the node, expects a full path name
 	 *
diff --git a/apps/dav/lib/Connector/Sabre/File.php b/apps/dav/lib/Connector/Sabre/File.php
index a46ca372be7..6c379984995 100644
--- a/apps/dav/lib/Connector/Sabre/File.php
+++ b/apps/dav/lib/Connector/Sabre/File.php
@@ -43,6 +43,7 @@ use OC\AppFramework\Http\Request;
 use OC\Files\Filesystem;
 use OC\Files\Stream\HashWrapper;
 use OC\Files\View;
+use OC\Metadata\FileMetadata;
 use OCA\DAV\AppInfo\Application;
 use OCA\DAV\Connector\Sabre\Exception\EntityTooLarge;
 use OCA\DAV\Connector\Sabre\Exception\FileLocked;
@@ -80,6 +81,9 @@ class File extends Node implements IFile {
 
 	protected IL10N $l10n;
 
+	/** @var array<string, FileMetadata> */
+	private array $metadata = [];
+
 	/**
 	 * Sets up the node, expects a full path name
 	 *
@@ -757,4 +761,16 @@ class File extends Node implements IFile {
 	public function getNode(): \OCP\Files\File {
 		return $this->node;
 	}
+
+	public function getMetadata(string $group): FileMetadata {
+		return $this->metadata[$group];
+	}
+
+	public function setMetadata(string $group, FileMetadata $metadata): void {
+		$this->metadata[$group] = $metadata;
+	}
+
+	public function hasMetadata(string $group) {
+		return array_key_exists($group, $this->metadata);
+	}
 }
diff --git a/apps/dav/lib/Connector/Sabre/FilesPlugin.php b/apps/dav/lib/Connector/Sabre/FilesPlugin.php
index 180f05c0e7e..9c4f912610b 100644
--- a/apps/dav/lib/Connector/Sabre/FilesPlugin.php
+++ b/apps/dav/lib/Connector/Sabre/FilesPlugin.php
@@ -34,6 +34,7 @@
 namespace OCA\DAV\Connector\Sabre;
 
 use OC\AppFramework\Http\Request;
+use OC\Metadata\IMetadataManager;
 use OCP\Constants;
 use OCP\Files\ForbiddenException;
 use OCP\Files\StorageNotAvailableException;
@@ -41,6 +42,7 @@ use OCP\IConfig;
 use OCP\IPreview;
 use OCP\IRequest;
 use OCP\IUserSession;
+use Psr\Log\LoggerInterface;
 use Sabre\DAV\Exception\Forbidden;
 use Sabre\DAV\Exception\NotFound;
 use Sabre\DAV\IFile;
@@ -50,6 +52,7 @@ use Sabre\DAV\ServerPlugin;
 use Sabre\DAV\Tree;
 use Sabre\HTTP\RequestInterface;
 use Sabre\HTTP\ResponseInterface;
+use Sabre\Uri;
 
 class FilesPlugin extends ServerPlugin {
 
@@ -79,6 +82,7 @@ class FilesPlugin extends ServerPlugin {
 	public const SHARE_NOTE = '{http://nextcloud.org/ns}note';
 	public const SUBFOLDER_COUNT_PROPERTYNAME = '{http://nextcloud.org/ns}contained-folder-count';
 	public const SUBFILE_COUNT_PROPERTYNAME = '{http://nextcloud.org/ns}contained-file-count';
+	public const FILE_METADATA_SIZE = '{http://nextcloud.org/ns}file-metadata-size';
 
 	/**
 	 * Reference to main server object
@@ -436,6 +440,29 @@ class FilesPlugin extends ServerPlugin {
 			$propFind->handle(self::UPLOAD_TIME_PROPERTYNAME, function () use ($node) {
 				return $node->getFileInfo()->getUploadTime();
 			});
+
+			if ($this->config->getSystemValueBool('enable_file_metadata', true)) {
+				$propFind->handle(self::FILE_METADATA_SIZE, function () use ($node) {
+					if (!str_starts_with($node->getFileInfo()->getMimetype(), 'image')) {
+						return json_encode((object)[]);
+					}
+
+					if ($node->hasMetadata('size')) {
+						$sizeMetadata = $node->getMetadata('size');
+					} else {
+						// This code path should not be called since we try to preload
+						// the metadata when loading the folder or the search results
+						// in one go
+						$metadataManager = \OC::$server->get(IMetadataManager::class);
+						$sizeMetadata = $metadataManager->fetchMetadataFor('size', [$node->getId()])[$node->getId()];
+
+						// TODO would be nice to display this in the profiler...
+						\OC::$server->get(LoggerInterface::class)->debug('Inefficient fetching of metadata');
+					}
+
+					return json_encode((object)$sizeMetadata->getMetadata());
+				});
+			}
 		}
 
 		if ($node instanceof Directory) {
@@ -448,6 +475,32 @@ class FilesPlugin extends ServerPlugin {
 			});
 
 			$requestProperties = $propFind->getRequestedProperties();
+
+			// TODO detect dynamically which metadata groups are requested and
+			// preload all of them and not just size
+			if ($this->config->getSystemValueBool('enable_file_metadata', true)
+				&& in_array(self::FILE_METADATA_SIZE, $requestProperties, true)) {
+				// Preloading of the metadata
+				$fileIds = [];
+				foreach ($node->getChildren() as $child) {
+					/** @var \OCP\Files\Node|Node $child */
+					if (str_starts_with($child->getFileInfo()->getMimeType(), 'image/')) {
+						/** @var File $child */
+						$fileIds[] = $child->getFileInfo()->getId();
+					}
+				}
+				/** @var IMetaDataManager $metadataManager */
+				$metadataManager = \OC::$server->get(IMetadataManager::class);
+				$preloadedMetadata = $metadataManager->fetchMetadataFor('size', $fileIds);
+				foreach ($node->getChildren() as $child) {
+					/** @var \OCP\Files\Node|Node $child */
+					if (str_starts_with($child->getFileInfo()->getMimeType(), 'image')) {
+						/** @var File $child */
+						$child->setMetadata('size', $preloadedMetadata[$child->getFileInfo()->getId()]);
+					}
+				}
+			}
+
 			if (in_array(self::SUBFILE_COUNT_PROPERTYNAME, $requestProperties, true)
 				|| in_array(self::SUBFOLDER_COUNT_PROPERTYNAME, $requestProperties, true)) {
 				$nbFiles = 0;
diff --git a/apps/dav/lib/Files/FileSearchBackend.php b/apps/dav/lib/Files/FileSearchBackend.php
index 45e911db182..7ee82779849 100644
--- a/apps/dav/lib/Files/FileSearchBackend.php
+++ b/apps/dav/lib/Files/FileSearchBackend.php
@@ -30,6 +30,7 @@ use OC\Files\Search\SearchComparison;
 use OC\Files\Search\SearchOrder;
 use OC\Files\Search\SearchQuery;
 use OC\Files\View;
+use OC\Metadata\IMetadataManager;
 use OCA\DAV\Connector\Sabre\CachingTree;
 use OCA\DAV\Connector\Sabre\Directory;
 use OCA\DAV\Connector\Sabre\FilesPlugin;
@@ -44,6 +45,7 @@ use OCP\Files\Search\ISearchQuery;
 use OCP\IUser;
 use OCP\Share\IManager;
 use Sabre\DAV\Exception\NotFound;
+use Sabre\DAV\INode;
 use SearchDAV\Backend\ISearchBackend;
 use SearchDAV\Backend\SearchPropertyDefinition;
 use SearchDAV\Backend\SearchResult;
@@ -88,14 +90,12 @@ class FileSearchBackend implements ISearchBackend {
 
 	/**
 	 * Search endpoint will be remote.php/dav
-	 *
-	 * @return string
 	 */
-	public function getArbiterPath() {
+	public function getArbiterPath(): string {
 		return '';
 	}
 
-	public function isValidScope($href, $depth, $path) {
+	public function isValidScope(string $href, $depth, ?string $path): bool {
 		// only allow scopes inside the dav server
 		if (is_null($path)) {
 			return false;
@@ -109,7 +109,7 @@ class FileSearchBackend implements ISearchBackend {
 		}
 	}
 
-	public function getPropertyDefinitionsForScope($href, $path) {
+	public function getPropertyDefinitionsForScope(string $href, ?string $path): array {
 		// all valid scopes support the same schema
 
 		//todo dynamically load all propfind properties that are supported
@@ -124,23 +124,52 @@ class FileSearchBackend implements ISearchBackend {
 			new SearchPropertyDefinition(FilesPlugin::OWNER_ID_PROPERTYNAME, true, true, false),
 
 			// select only properties
-			new SearchPropertyDefinition('{DAV:}resourcetype', false, true, false),
-			new SearchPropertyDefinition('{DAV:}getcontentlength', false, true, false),
-			new SearchPropertyDefinition(FilesPlugin::CHECKSUMS_PROPERTYNAME, false, true, false),
-			new SearchPropertyDefinition(FilesPlugin::PERMISSIONS_PROPERTYNAME, false, true, false),
-			new SearchPropertyDefinition(FilesPlugin::GETETAG_PROPERTYNAME, false, true, false),
-			new SearchPropertyDefinition(FilesPlugin::OWNER_DISPLAY_NAME_PROPERTYNAME, false, true, false),
-			new SearchPropertyDefinition(FilesPlugin::DATA_FINGERPRINT_PROPERTYNAME, false, true, false),
-			new SearchPropertyDefinition(FilesPlugin::HAS_PREVIEW_PROPERTYNAME, false, true, false, SearchPropertyDefinition::DATATYPE_BOOLEAN),
-			new SearchPropertyDefinition(FilesPlugin::FILEID_PROPERTYNAME, false, true, false, SearchPropertyDefinition::DATATYPE_NONNEGATIVE_INTEGER),
+			new SearchPropertyDefinition('{DAV:}resourcetype', true, false, false),
+			new SearchPropertyDefinition('{DAV:}getcontentlength', true, false, false),
+			new SearchPropertyDefinition(FilesPlugin::CHECKSUMS_PROPERTYNAME, true, false, false),
+			new SearchPropertyDefinition(FilesPlugin::PERMISSIONS_PROPERTYNAME, true, false, false),
+			new SearchPropertyDefinition(FilesPlugin::GETETAG_PROPERTYNAME, true, false, false),
+			new SearchPropertyDefinition(FilesPlugin::OWNER_DISPLAY_NAME_PROPERTYNAME, true, false, false),
+			new SearchPropertyDefinition(FilesPlugin::DATA_FINGERPRINT_PROPERTYNAME, true, false, false),
+			new SearchPropertyDefinition(FilesPlugin::HAS_PREVIEW_PROPERTYNAME, true, false, false, SearchPropertyDefinition::DATATYPE_BOOLEAN),
+			new SearchPropertyDefinition(FilesPlugin::FILE_METADATA_SIZE, true, false, false, SearchPropertyDefinition::DATATYPE_STRING),
+			new SearchPropertyDefinition(FilesPlugin::FILEID_PROPERTYNAME, true, false, false, SearchPropertyDefinition::DATATYPE_NONNEGATIVE_INTEGER),
 		];
 	}
 
 	/**
+	 * @param INode[] $nodes
+	 * @param string[] $requestProperties
+	 */
+	public function preloadPropertyFor(array $nodes, array $requestProperties): void {
+		if (in_array(FilesPlugin::FILE_METADATA_SIZE, $requestProperties, true)) {
+			// Preloading of the metadata
+			$fileIds = [];
+			foreach ($nodes as $node) {
+				/** @var \OCP\Files\Node|\OCA\DAV\Connector\Sabre\Node $node */
+				if (str_starts_with($node->getFileInfo()->getMimeType(), 'image/')) {
+					/** @var \OCA\DAV\Connector\Sabre\File $node */
+					$fileIds[] = $node->getFileInfo()->getId();
+				}
+			}
+			/** @var IMetaDataManager $metadataManager */
+			$metadataManager = \OC::$server->get(IMetadataManager::class);
+			$preloadedMetadata = $metadataManager->fetchMetadataFor('size', $fileIds);
+			foreach ($nodes as $node) {
+				/** @var \OCP\Files\Node|\OCA\DAV\Connector\Sabre\Node $node */
+				if (str_starts_with($node->getFileInfo()->getMimeType(), 'image/')) {
+					/** @var \OCA\DAV\Connector\Sabre\File $node */
+					$node->setMetadata('size', $preloadedMetadata[$node->getFileInfo()->getId()]);
+				}
+			}
+		}
+	}
+
+	/**
 	 * @param Query $search
 	 * @return SearchResult[]
 	 */
-	public function search(Query $search) {
+	public function search(Query $search): array {
 		if (count($search->from) !== 1) {
 			throw new \InvalidArgumentException('Searching more than one folder is not supported');
 		}
diff --git a/apps/dav/lib/Files/LazySearchBackend.php b/apps/dav/lib/Files/LazySearchBackend.php
index d84c11306e3..c3b2f27d72a 100644
--- a/apps/dav/lib/Files/LazySearchBackend.php
+++ b/apps/dav/lib/Files/LazySearchBackend.php
@@ -22,6 +22,7 @@
  */
 namespace OCA\DAV\Files;
 
+use Sabre\DAV\INode;
 use SearchDAV\Backend\ISearchBackend;
 use SearchDAV\Query\Query;
 
@@ -35,7 +36,7 @@ class LazySearchBackend implements ISearchBackend {
 		$this->backend = $backend;
 	}
 
-	public function getArbiterPath() {
+	public function getArbiterPath(): string {
 		if ($this->backend) {
 			return $this->backend->getArbiterPath();
 		} else {
@@ -43,27 +44,30 @@ class LazySearchBackend implements ISearchBackend {
 		}
 	}
 
-	public function isValidScope($href, $depth, $path) {
+	public function isValidScope(string $href, $depth, ?string $path): bool {
 		if ($this->backend) {
 			return $this->backend->getArbiterPath();
-		} else {
-			return false;
 		}
+		return false;
 	}
 
-	public function getPropertyDefinitionsForScope($href, $path) {
+	public function getPropertyDefinitionsForScope(string $href, ?String $path): array {
 		if ($this->backend) {
 			return $this->backend->getPropertyDefinitionsForScope($href, $path);
-		} else {
-			return [];
 		}
+		return [];
 	}
 
-	public function search(Query $query) {
+	public function search(Query $query): array {
 		if ($this->backend) {
 			return $this->backend->search($query);
-		} else {
-			return [];
+		}
+		return [];
+	}
+
+	public function preloadPropertyFor(array $nodes, array $requestProperties): void {
+		if ($this->backend) {
+			$this->backend->preloadPropertyFor($nodes, $requestProperties);
 		}
 	}
 }
diff --git a/apps/encryption/composer/autoload.php b/apps/encryption/composer/autoload.php
index 52febf19470..593ddde0eb0 100644
--- a/apps/encryption/composer/autoload.php
+++ b/apps/encryption/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitEncryption::getLoader();
diff --git a/apps/encryption/composer/composer/autoload_real.php b/apps/encryption/composer/composer/autoload_real.php
index 35091c9ed4a..aafe8533d3d 100644
--- a/apps/encryption/composer/composer/autoload_real.php
+++ b/apps/encryption/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitEncryption
         spl_autoload_unregister(array('ComposerAutoloaderInitEncryption', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitEncryption::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitEncryption::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/federatedfilesharing/composer/autoload.php b/apps/federatedfilesharing/composer/autoload.php
index 5273607f74a..e839dd1bcdd 100644
--- a/apps/federatedfilesharing/composer/autoload.php
+++ b/apps/federatedfilesharing/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFederatedFileSharing::getLoader();
diff --git a/apps/federatedfilesharing/composer/composer/autoload_real.php b/apps/federatedfilesharing/composer/composer/autoload_real.php
index 0a8c5bf9588..c6f34ef0a65 100644
--- a/apps/federatedfilesharing/composer/composer/autoload_real.php
+++ b/apps/federatedfilesharing/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitFederatedFileSharing
         spl_autoload_unregister(array('ComposerAutoloaderInitFederatedFileSharing', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitFederatedFileSharing::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitFederatedFileSharing::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/federation/composer/autoload.php b/apps/federation/composer/autoload.php
index 45677794dd0..77ae3e1c118 100644
--- a/apps/federation/composer/autoload.php
+++ b/apps/federation/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFederation::getLoader();
diff --git a/apps/federation/composer/composer/autoload_real.php b/apps/federation/composer/composer/autoload_real.php
index 40dc84ff20a..b3913e0ac70 100644
--- a/apps/federation/composer/composer/autoload_real.php
+++ b/apps/federation/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitFederation
         spl_autoload_unregister(array('ComposerAutoloaderInitFederation', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitFederation::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitFederation::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/files/composer/autoload.php b/apps/files/composer/autoload.php
index 3aa13fa515d..cbac9333296 100644
--- a/apps/files/composer/autoload.php
+++ b/apps/files/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFiles::getLoader();
diff --git a/apps/files/composer/composer/autoload_real.php b/apps/files/composer/composer/autoload_real.php
index 5b2c0e86043..e3e4d9e67ef 100644
--- a/apps/files/composer/composer/autoload_real.php
+++ b/apps/files/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitFiles
         spl_autoload_unregister(array('ComposerAutoloaderInitFiles', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitFiles::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitFiles::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/files_sharing/composer/autoload.php b/apps/files_sharing/composer/autoload.php
index 0aa77c00af9..02b3c10c483 100644
--- a/apps/files_sharing/composer/autoload.php
+++ b/apps/files_sharing/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFiles_Sharing::getLoader();
diff --git a/apps/files_sharing/composer/composer/autoload_real.php b/apps/files_sharing/composer/composer/autoload_real.php
index 24054045984..64a23094d9d 100644
--- a/apps/files_sharing/composer/composer/autoload_real.php
+++ b/apps/files_sharing/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitFiles_Sharing
         spl_autoload_unregister(array('ComposerAutoloaderInitFiles_Sharing', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitFiles_Sharing::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitFiles_Sharing::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/files_trashbin/composer/autoload.php b/apps/files_trashbin/composer/autoload.php
index ae6d572163f..4e88a44133f 100644
--- a/apps/files_trashbin/composer/autoload.php
+++ b/apps/files_trashbin/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFiles_Trashbin::getLoader();
diff --git a/apps/files_trashbin/composer/composer/autoload_real.php b/apps/files_trashbin/composer/composer/autoload_real.php
index b9a42591b0c..0d1aa13ee3c 100644
--- a/apps/files_trashbin/composer/composer/autoload_real.php
+++ b/apps/files_trashbin/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitFiles_Trashbin
         spl_autoload_unregister(array('ComposerAutoloaderInitFiles_Trashbin', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitFiles_Trashbin::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitFiles_Trashbin::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/files_versions/composer/autoload.php b/apps/files_versions/composer/autoload.php
index 7bb72360fba..f75dc09160c 100644
--- a/apps/files_versions/composer/autoload.php
+++ b/apps/files_versions/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitFiles_Versions::getLoader();
diff --git a/apps/files_versions/composer/composer/autoload_real.php b/apps/files_versions/composer/composer/autoload_real.php
index e9e2ad95149..dad15f0b550 100644
--- a/apps/files_versions/composer/composer/autoload_real.php
+++ b/apps/files_versions/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitFiles_Versions
         spl_autoload_unregister(array('ComposerAutoloaderInitFiles_Versions', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitFiles_Versions::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitFiles_Versions::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/lookup_server_connector/composer/autoload.php b/apps/lookup_server_connector/composer/autoload.php
index ab8f4ce80ff..521fd3630e4 100644
--- a/apps/lookup_server_connector/composer/autoload.php
+++ b/apps/lookup_server_connector/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitLookupServerConnector::getLoader();
diff --git a/apps/lookup_server_connector/composer/composer/autoload_real.php b/apps/lookup_server_connector/composer/composer/autoload_real.php
index 798f093c6e8..417958ba7f1 100644
--- a/apps/lookup_server_connector/composer/composer/autoload_real.php
+++ b/apps/lookup_server_connector/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitLookupServerConnector
         spl_autoload_unregister(array('ComposerAutoloaderInitLookupServerConnector', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitLookupServerConnector::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitLookupServerConnector::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/oauth2/composer/autoload.php b/apps/oauth2/composer/autoload.php
index 276dedf42c2..c7fd27c188d 100644
--- a/apps/oauth2/composer/autoload.php
+++ b/apps/oauth2/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitOAuth2::getLoader();
diff --git a/apps/oauth2/composer/composer/autoload_real.php b/apps/oauth2/composer/composer/autoload_real.php
index 4d9e729ac26..0253518be84 100644
--- a/apps/oauth2/composer/composer/autoload_real.php
+++ b/apps/oauth2/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitOAuth2
         spl_autoload_unregister(array('ComposerAutoloaderInitOAuth2', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitOAuth2::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitOAuth2::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/provisioning_api/composer/autoload.php b/apps/provisioning_api/composer/autoload.php
index 9734ee42b19..d01dfa2c74b 100644
--- a/apps/provisioning_api/composer/autoload.php
+++ b/apps/provisioning_api/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitProvisioning_API::getLoader();
diff --git a/apps/provisioning_api/composer/composer/autoload_real.php b/apps/provisioning_api/composer/composer/autoload_real.php
index bada942777d..a3b1fdeb247 100644
--- a/apps/provisioning_api/composer/composer/autoload_real.php
+++ b/apps/provisioning_api/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitProvisioning_API
         spl_autoload_unregister(array('ComposerAutoloaderInitProvisioning_API', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitProvisioning_API::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitProvisioning_API::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/settings/composer/autoload.php b/apps/settings/composer/autoload.php
index 04ff46ee987..e7087dceec2 100644
--- a/apps/settings/composer/autoload.php
+++ b/apps/settings/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitSettings::getLoader();
diff --git a/apps/settings/composer/composer/autoload_real.php b/apps/settings/composer/composer/autoload_real.php
index 0e9941ee04d..865e01a7fd9 100644
--- a/apps/settings/composer/composer/autoload_real.php
+++ b/apps/settings/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitSettings
         spl_autoload_unregister(array('ComposerAutoloaderInitSettings', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitSettings::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitSettings::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/sharebymail/composer/autoload.php b/apps/sharebymail/composer/autoload.php
index da43a4ff256..bef284b432f 100644
--- a/apps/sharebymail/composer/autoload.php
+++ b/apps/sharebymail/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitShareByMail::getLoader();
diff --git a/apps/sharebymail/composer/composer/autoload_real.php b/apps/sharebymail/composer/composer/autoload_real.php
index 47a2c20fd5e..cfbfdab1b1e 100644
--- a/apps/sharebymail/composer/composer/autoload_real.php
+++ b/apps/sharebymail/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitShareByMail
         spl_autoload_unregister(array('ComposerAutoloaderInitShareByMail', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitShareByMail::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitShareByMail::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/systemtags/composer/autoload.php b/apps/systemtags/composer/autoload.php
index 30f4cd27d40..5f15d593150 100644
--- a/apps/systemtags/composer/autoload.php
+++ b/apps/systemtags/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitSystemTags::getLoader();
diff --git a/apps/systemtags/composer/composer/autoload_real.php b/apps/systemtags/composer/composer/autoload_real.php
index f9bc1f2eaff..340f7c9e6ed 100644
--- a/apps/systemtags/composer/composer/autoload_real.php
+++ b/apps/systemtags/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitSystemTags
         spl_autoload_unregister(array('ComposerAutoloaderInitSystemTags', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitSystemTags::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitSystemTags::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/testing/composer/autoload.php b/apps/testing/composer/autoload.php
index dc2a7034ffa..1ac43d5c8e9 100644
--- a/apps/testing/composer/autoload.php
+++ b/apps/testing/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitTesting::getLoader();
diff --git a/apps/testing/composer/composer/autoload_real.php b/apps/testing/composer/composer/autoload_real.php
index 805c585644d..0d4fabd66a0 100644
--- a/apps/testing/composer/composer/autoload_real.php
+++ b/apps/testing/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitTesting
         spl_autoload_unregister(array('ComposerAutoloaderInitTesting', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitTesting::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitTesting::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/twofactor_backupcodes/composer/autoload.php b/apps/twofactor_backupcodes/composer/autoload.php
index 03a8800c318..091a9b4fefa 100644
--- a/apps/twofactor_backupcodes/composer/autoload.php
+++ b/apps/twofactor_backupcodes/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitTwoFactorBackupCodes::getLoader();
diff --git a/apps/twofactor_backupcodes/composer/composer/autoload_real.php b/apps/twofactor_backupcodes/composer/composer/autoload_real.php
index 0c6e6b19f33..b063e83100f 100644
--- a/apps/twofactor_backupcodes/composer/composer/autoload_real.php
+++ b/apps/twofactor_backupcodes/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitTwoFactorBackupCodes
         spl_autoload_unregister(array('ComposerAutoloaderInitTwoFactorBackupCodes', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitTwoFactorBackupCodes::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitTwoFactorBackupCodes::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/updatenotification/composer/autoload.php b/apps/updatenotification/composer/autoload.php
index 47cc4d587a5..e715564a5bd 100644
--- a/apps/updatenotification/composer/autoload.php
+++ b/apps/updatenotification/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitUpdateNotification::getLoader();
diff --git a/apps/updatenotification/composer/composer/autoload_real.php b/apps/updatenotification/composer/composer/autoload_real.php
index 89854cd42f4..b7569aff2d1 100644
--- a/apps/updatenotification/composer/composer/autoload_real.php
+++ b/apps/updatenotification/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitUpdateNotification
         spl_autoload_unregister(array('ComposerAutoloaderInitUpdateNotification', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitUpdateNotification::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitUpdateNotification::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/user_ldap/composer/autoload.php b/apps/user_ldap/composer/autoload.php
index 24824c188e5..d1e331c189e 100644
--- a/apps/user_ldap/composer/autoload.php
+++ b/apps/user_ldap/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitUser_LDAP::getLoader();
diff --git a/apps/user_ldap/composer/composer/autoload_real.php b/apps/user_ldap/composer/composer/autoload_real.php
index 0e1a6558e55..6f0c636e7d5 100644
--- a/apps/user_ldap/composer/composer/autoload_real.php
+++ b/apps/user_ldap/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitUser_LDAP
         spl_autoload_unregister(array('ComposerAutoloaderInitUser_LDAP', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitUser_LDAP::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitUser_LDAP::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/user_status/composer/autoload.php b/apps/user_status/composer/autoload.php
index b22563e6f83..a82d4105451 100644
--- a/apps/user_status/composer/autoload.php
+++ b/apps/user_status/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitUserStatus::getLoader();
diff --git a/apps/user_status/composer/composer/autoload_real.php b/apps/user_status/composer/composer/autoload_real.php
index 4ffa4b4201b..205d9780930 100644
--- a/apps/user_status/composer/composer/autoload_real.php
+++ b/apps/user_status/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitUserStatus
         spl_autoload_unregister(array('ComposerAutoloaderInitUserStatus', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitUserStatus::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitUserStatus::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
diff --git a/apps/workflowengine/composer/autoload.php b/apps/workflowengine/composer/autoload.php
index 003e945ff82..74a2777acf2 100644
--- a/apps/workflowengine/composer/autoload.php
+++ b/apps/workflowengine/composer/autoload.php
@@ -2,6 +2,11 @@
 
 // autoload.php @generated by Composer
 
+if (PHP_VERSION_ID < 50600) {
+    echo 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    exit(1);
+}
+
 require_once __DIR__ . '/composer/autoload_real.php';
 
 return ComposerAutoloaderInitWorkflowEngine::getLoader();
diff --git a/apps/workflowengine/composer/composer/autoload_real.php b/apps/workflowengine/composer/composer/autoload_real.php
index 8ed8cb2a7b4..cdc2b8a55b4 100644
--- a/apps/workflowengine/composer/composer/autoload_real.php
+++ b/apps/workflowengine/composer/composer/autoload_real.php
@@ -27,7 +27,7 @@ class ComposerAutoloaderInitWorkflowEngine
         spl_autoload_unregister(array('ComposerAutoloaderInitWorkflowEngine', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        \Composer\Autoload\ComposerStaticInitWorkflowEngine::getInitializer($loader)();
+        call_user_func(\Composer\Autoload\ComposerStaticInitWorkflowEngine::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);