fix: Remove obsolete resource typing

apps/files_external/lib/Lib/Storage/FtpConnection.php

@@ -1,6 +1,7 @@
 <?php
 
 declare(strict_types=1);
+
 /**
  * @copyright Copyright (c) 2020 Robin Appelman <[email protected]>
  *
@@ -27,8 +28,7 @@
  * Low level wrapper around the ftp functions that smooths over some difference between servers
  */
 class FtpConnection {
-	/** @var resource|\FTP\Connection */
-	private $connection;
+	private \FTP\Connection $connection;
 
 	public function __construct(bool $secure, string $hostname, int $port, string $username, string $password) {
 		if ($secure) {
@@ -50,10 +50,7 @@ public function __construct(bool $secure, string $hostname, int $port, string $u
 	}
 
 	public function __destruct() {
-		if ($this->connection) {
-			ftp_close($this->connection);
-		}
-		$this->connection = null;
+		ftp_close($this->connection);
 	}
 
 	public function setUtf8Mode(): bool {

apps/theming/lib/ImageManager.php

@@ -240,15 +240,15 @@ public function updateImage(string $key, string $tmpFile): string {
 				imagesavealpha($newImage, true);
 				imagealphablending($newImage, true);
 
-				$newWidth = (int)(imagesx($newImage) < 4096 ? imagesx($newImage) : 4096);
+				$newWidth = (imagesx($newImage) < 4096 ? imagesx($newImage) : 4096);
 				$newHeight = (int)(imagesy($newImage) / (imagesx($newImage) / $newWidth));
 				$outputImage = imagescale($newImage, $newWidth, $newHeight);
 				if ($outputImage === false) {
 					throw new \Exception('Could not scale uploaded background image.');
 				}
 
 				$newTmpFile = $this->tempManager->getTemporaryFile();
-				imageinterlace($outputImage, 1);
+				imageinterlace($outputImage, true);
 				// Keep jpeg images encoded as jpeg
 				if (str_contains($detectedMimeType, 'image/jpeg')) {
 					if (!imagejpeg($outputImage, $newTmpFile, 90)) {

apps/user_ldap/lib/Access.php

@@ -188,11 +188,6 @@ public function readAttribute(string $dn, string $attr, string $filter = 'object
 			return false;
 		}
 		$cr = $this->connection->getConnectionResource();
-		if (!$this->ldap->isResource($cr)) {
-			//LDAP not available
-			$this->logger->debug('LDAP resource not available.', ['app' => 'user_ldap']);
-			return false;
-		}
 		$attr = mb_strtolower($attr, 'UTF-8');
 		// the actual read attribute later may contain parameters on a ranged
 		// request, e.g. member;range=99-199. Depends on server reply.
@@ -344,11 +339,6 @@ public function setPassword($userDN, $password) {
 			throw new \Exception('LDAP password changes are disabled.');
 		}
 		$cr = $this->connection->getConnectionResource();
-		if (!$this->ldap->isResource($cr)) {
-			//LDAP not available
-			$this->logger->debug('LDAP resource not available.', ['app' => 'user_ldap']);
-			return false;
-		}
 		try {
 			// try PASSWD extended operation first
 			return @$this->invokeLDAPMethod('exopPasswd', $userDN, '', $password) ||
@@ -1108,12 +1098,6 @@ private function executeSearch(
 	) {
 		// See if we have a resource, in case not cancel with message
 		$cr = $this->connection->getConnectionResource();
-		if (!$this->ldap->isResource($cr)) {
-			// Seems like we didn't find any resource.
-			// Return an empty array just like before.
-			$this->logger->debug('Could not search, because resource is missing.', ['app' => 'user_ldap']);
-			return false;
-		}
 
 		//check whether paged search should be attempted
 		try {
@@ -1136,7 +1120,7 @@ private function executeSearch(
 	/**
 	 * processes an LDAP paged search operation
 	 *
-	 * @param resource|\LDAP\Result|resource[]|\LDAP\Result[] $sr the array containing the LDAP search resources
+	 * @param \LDAP\Result|\LDAP\Result[] $sr the array containing the LDAP search resources
 	 * @param int $foundItems number of results in the single search operation
 	 * @param int $limit maximum results to be counted
 	 * @param bool $pagedSearchOK whether a paged search has been executed
@@ -1249,7 +1233,7 @@ private function count(
 	}
 
 	/**
-	 * @param resource|\LDAP\Result|resource[]|\LDAP\Result[] $sr
+	 * @param \LDAP\Result|\LDAP\Result[] $sr
 	 * @return int
 	 * @throws ServerNotAvailableException
 	 */

apps/user_ldap/lib/Connection.php

@@ -86,30 +86,15 @@
  * @property string ldapAdminGroup
  */
 class Connection extends LDAPUtility {
-	/**
-	 * @var resource|\LDAP\Connection|null
-	 */
-	private $ldapConnectionRes = null;
-
-	/**
-	 * @var string
-	 */
-	private $configPrefix;
-
-	/**
-	 * @var ?string
-	 */
-	private $configID;
-
-	/**
-	 * @var bool
-	 */
-	private $configured = false;
+	private ?\LDAP\Connection $ldapConnectionRes = null;
+	private string $configPrefix;
+	private ?string $configID;
+	private bool $configured = false;
 
 	/**
 	 * @var bool whether connection should be kept on __destruct
 	 */
-	private $dontDestruct = false;
+	private bool $dontDestruct = false;
 
 	/**
 	 * @var bool runtime flag that indicates whether supported primary groups are available
@@ -241,14 +226,11 @@ public function init($force = false) {
 	}
 
 	/**
-	 * @return resource|\LDAP\Connection The LDAP resource
+	 * @return \LDAP\Connection The LDAP resource
 	 */
-	public function getConnectionResource() {
+	public function getConnectionResource(): \LDAP\Connection {
 		if (!$this->ldapConnectionRes) {
 			$this->init();
-		} elseif (!$this->ldap->isResource($this->ldapConnectionRes)) {
-			$this->ldapConnectionRes = null;
-			$this->establishConnection();
 		}
 		if (is_null($this->ldapConnectionRes)) {
 			$this->logger->error(
@@ -263,7 +245,7 @@ public function getConnectionResource() {
 	/**
 	 * resets the connection resource
 	 */
-	public function resetConnectionResource() {
+	public function resetConnectionResource(): void {
 		if (!is_null($this->ldapConnectionRes)) {
 			@$this->ldap->unbind($this->ldapConnectionRes);
 			$this->ldapConnectionRes = null;
@@ -273,9 +255,8 @@ public function resetConnectionResource() {
 
 	/**
 	 * @param string|null $key
-	 * @return string
 	 */
-	private function getCacheKey($key) {
+	private function getCacheKey($key): string {
 		$prefix = 'LDAP-'.$this->configID.'-'.$this->configPrefix.'-';
 		if (is_null($key)) {
 			return $prefix;
@@ -332,9 +313,8 @@ public function clearCache() {
 	 * Caches the general LDAP configuration.
 	 * @param bool $force optional. true, if the re-read should be forced. defaults
 	 * to false.
-	 * @return null
 	 */
-	private function readConfiguration($force = false) {
+	private function readConfiguration(bool $force = false): void {
 		if ((!$this->configured || $force) && !is_null($this->configID)) {
 			$this->configuration->readConfiguration();
 			$this->configured = $this->validateConfiguration();
@@ -406,7 +386,7 @@ public function getConfiguration() {
 		return $result;
 	}
 
-	private function doSoftValidation() {
+	private function doSoftValidation(): void {
 		//if User or Group Base are not set, take over Base DN setting
 		foreach (['ldapBaseUsers', 'ldapBaseGroups'] as $keyBase) {
 			$val = $this->configuration->$keyBase;
@@ -461,13 +441,9 @@ private function doSoftValidation() {
 		}
 	}
 
-	/**
-	 * @return bool
-	 */
-	private function doCriticalValidation() {
+	private function doCriticalValidation(): bool {
 		$configurationOK = true;
-		$errorStr = 'Configuration Error (prefix '.
-			(string)$this->configPrefix .'): ';
+		$errorStr = 'Configuration Error (prefix ' . $this->configPrefix . '): ';
 
 		//options that shall not be empty
 		$options = ['ldapHost', 'ldapUserDisplayName',
@@ -552,7 +528,7 @@ private function doCriticalValidation() {
 	 * Validates the user specified configuration
 	 * @return bool true if configuration seems OK, false otherwise
 	 */
-	private function validateConfiguration() {
+	private function validateConfiguration(): bool {
 		if ($this->doNotValidate) {
 			//don't do a validation if it is a new configuration with pure
 			//default values. Will be allowed on changes via __set or
@@ -575,7 +551,7 @@ private function validateConfiguration() {
 	 *
 	 * @throws ServerNotAvailableException
 	 */
-	private function establishConnection() {
+	private function establishConnection(): ?bool {
 		if (!$this->configuration->ldapConfigurationActive) {
 			return null;
 		}
@@ -663,15 +639,18 @@ private function establishConnection() {
 	/**
 	 * @param string $host
 	 * @param string $port
-	 * @return bool
 	 * @throws \OC\ServerNotAvailableException
 	 */
-	private function doConnect($host, $port) {
+	private function doConnect($host, $port): bool {
 		if ($host === '') {
 			return false;
 		}
 
-		$this->ldapConnectionRes = $this->ldap->connect($host, $port);
+		$this->ldapConnectionRes = $this->ldap->connect($host, $port) ?: null;
+
+		if ($this->ldapConnectionRes === null) {
+			throw new ServerNotAvailableException('Connection failed');
+		}
 
 		if (!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) {
 			throw new ServerNotAvailableException('Could not set required LDAP Protocol version.');

apps/user_ldap/lib/Group_LDAP.php

@@ -1374,10 +1374,10 @@ public function getGroupDetails($gid) {
 	 * of the current access.
 	 *
 	 * @param string $gid
-	 * @return resource|\LDAP\Connection The LDAP connection
+	 * @return \LDAP\Connection The LDAP connection
 	 * @throws ServerNotAvailableException
 	 */
-	public function getNewLDAPConnection($gid) {
+	public function getNewLDAPConnection($gid): \LDAP\Connection {
 		$connection = clone $this->access->getConnection();
 		return $connection->getConnectionResource();
 	}

apps/user_ldap/lib/Group_Proxy.php

@@ -371,9 +371,9 @@ public function getLDAPAccess($gid) {
 	 * The connection needs to be closed manually.
 	 *
 	 * @param string $gid
-	 * @return resource|\LDAP\Connection The LDAP connection
+	 * @return \LDAP\Connection The LDAP connection
 	 */
-	public function getNewLDAPConnection($gid) {
+	public function getNewLDAPConnection($gid): \LDAP\Connection {
 		return $this->handleRequest($gid, 'getNewLDAPConnection', [$gid]);
 	}
 

apps/user_ldap/lib/IGroupLDAP.php

@@ -36,7 +36,7 @@ public function getLDAPAccess($gid);
 	/**
 	 * Return a new LDAP connection for the specified group.
 	 * @param string $gid
-	 * @return resource|\LDAP\Connection The LDAP connection
+	 * @return \LDAP\Connection The LDAP connection
 	 */
 	public function getNewLDAPConnection($gid);
 }