diff --git a/composer.json b/composer.json
index 71e1320..3dbf33c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
-  "name": "contributte/deployer-extension",
-  "description": "Ftp-Deployment Extension for Nette",
+  "name": "kubomikita/deployer-extension",
+  "description": "Fork of Ftp-Deployment Extension for Nette",
   "type": "library",
   "license": "BSD-3-Clause",
   "homepage": "https://github.com/contributte/deployer-extension",
@@ -12,13 +12,14 @@
   ],
   "require": {
     "php": ">=7.1",
-    "nette/di": "~2.4.13",
-    "dg/ftp-deployment": "~3.0.1"
+    "nette/di": "^3.0.2",
+    "dg/ftp-deployment": "^3.3.1"
   },
   "require-dev": {
     "ninjify/qa": "^0.8.0",
     "ninjify/nunjuck": "^0.2.0",
-    "mockery/mockery": "~1.1.0"
+    "mockery/mockery": "~1.1.0",
+    "squizlabs/php_codesniffer": "3.*"
   },
   "autoload": {
     "psr-4": {
diff --git a/src/Config/Section.php b/src/Config/Section.php
index a6b9224..e7c57bb 100644
--- a/src/Config/Section.php
+++ b/src/Config/Section.php
@@ -249,7 +249,7 @@ public function setTestMode(bool $testMode): void
 
 	public function getFilePermissions(): ?int
 	{
-		return empty($this->filePermissions) ? null : octdec($this->filePermissions);
+		return ($this->filePermissions === '') ? null : octdec($this->filePermissions);
 	}
 
 	public function setFilePermissions(string $mask): void
@@ -259,7 +259,7 @@ public function setFilePermissions(string $mask): void
 
 	public function getDirPermissions(): ?int
 	{
-		return empty($this->dirPermissions) ? null : octdec($this->dirPermissions);
+		return ($this->dirPermissions === '') ? null : octdec($this->dirPermissions);
 	}
 
 	public function setDirPermissions(string $mask): void
diff --git a/src/DI/DeployerExtension.php b/src/DI/DeployerExtension.php
index 98a566c..501d59a 100644
--- a/src/DI/DeployerExtension.php
+++ b/src/DI/DeployerExtension.php
@@ -8,6 +8,9 @@
 use Contributte\Deployer\Runner;
 use Nette\DI\CompilerExtension;
 use Nette\DI\Statement;
+use Nette\Schema\Expect;
+use Nette\Schema\Processor;
+use Nette\Schema\Schema;
 
 /**
  * Deployer Extension
@@ -15,60 +18,85 @@
 final class DeployerExtension extends CompilerExtension
 {
 
-	/** @var mixed[] */
-	private $defaults = [
-		'config' => [
-			'mode' => Config::MODE_TEST,
-			'logFile' => '%appDir/../log/deploy.log',
-			'tempDir' => '%appDir/../temp',
-			'colors' => null,
-		],
-		'sections' => [],
-		'userdata' => [],
-		'plugins' => [],
-	];
+    public function getConfigSchema() : Schema
+    {
+        return Expect::structure(
+            [
+            'config' => Expect::structure(
+                [
+                'mode' => Expect::string(Config::MODE_TEST),
+                'logFile' => Expect::string('%appDir/../log/deploy.log'),
+                'tempDir' => Expect::string('%appDir/../temp'),
+                'colors' => Expect::bool(),
+                ]
+            ),
+            'sections' => Expect::array(),
+            'userdata' => Expect::array(),
+            'plugins' => Expect::array()
+            ]
+        );
+    }
 
-	/** @var mixed[] */
-	private $sectionDefaults = [
-		'testMode' => true,
-		'deployFile' => null,
-		'remote' => null,
-		'local' => '%appDir',
-		'ignore' => [],
-		'allowdelete' => true,
-		'before' => [],
-		'after' => [],
-		'purge' => [],
-		'preprocess' => false,
-		'passiveMode' => false,
-		'filePermissions' => '',
-		'dirPermissions' => '',
-	];
+    /**
+     * Validates section config
+     *
+     * @param array $data Config array of section
+     *
+     * @return array
+     */
+    public function validateSectionConfig(array $data): array
+    {
+        $schema = Expect::structure(
+            [
+            'remote' => Expect::string()->required(),
+            'local' => Expect::string()->required(),
+            'deployFile' => Expect::string('.dep'),
+            'ignore' => Expect::array(),
+            'purge' => Expect::array(),
+            'after' => Expect::array(),
+            'before' => Expect::array(),
+            'testMode' => Expect::bool(false),
+            'preprocess' => Expect::bool(false),
+            'allowdelete' => Expect::bool(true),
+            'passiveMode' => Expect::bool(false),
+            'filePermissions' => Expect::string(''),
+            'dirPermissions' => Expect::string(''),
+            ]
+        );
 
-	/**
-	 * Processes configuration data. Intended to be overridden by descendant.
-	 */
-	public function loadConfiguration(): void
-	{
-		// Validate config
-		$config = $this->validateConfig($this->defaults);
+        $processor = new Processor();
+        return (array) $processor->process($schema, $data);
+    }
 
-		// Get builder
-		$builder = $this->getContainerBuilder();
+    /**
+     * Processes configuration data. Intended to be overridden by descendant.
+     *
+     * @return void
+     */
+    public function loadConfiguration(): void
+    {
+        // Validate config
+        $config =  (array) $this->config;
+        $config['config'] = (array) $this->config->config;
 
-		// Process sections
-		foreach ($config['sections'] as $name => $section) {
+        // Get builder
+        $builder = $this->getContainerBuilder();
 
-			// Validate and merge section
-			$config['sections'][$name] = $this->validateConfig($this->sectionDefaults, $section);
-		}
+        // Process sections
+        foreach ($config['sections'] as $name => $section) {
 
-		// Add deploy manager
-		$builder->addDefinition($this->prefix('manager'))
-			->setFactory(Manager::class, [
-				new Statement(Runner::class),
-				new Statement(ConfigFactory::class, [$config]),
-			]);
-	}
+            // Validate and merge section
+            $config['sections'][$name] = $this->validateSectionConfig($section);
+        }
+
+        // Add deploy manager
+        $builder->addDefinition($this->prefix('manager'))
+            ->setFactory(
+                Manager::class, [
+                    new Statement(Runner::class),
+                    new Statement(ConfigFactory::class, [$config]),
+                    ]
+            );
+    }
 
 }
diff --git a/src/Runner.php b/src/Runner.php
index 158e29a..ecad6c1 100644
--- a/src/Runner.php
+++ b/src/Runner.php
@@ -19,6 +19,11 @@ class Runner
 	/** @var Logger */
 	private $logger;
 
+	/**
+	 * @param Config $config
+	 *
+	 * @throws \Exception
+	 */
 	public function run(Config $config): void
 	{
 		// Create logger
@@ -38,9 +43,11 @@ public function run(Config $config): void
 
 		// Get sections and get sections names
 		$sections = $config->getSections();
-		$sectionNames = array_map(function (Section $s) {
-			return $s->getName();
-		}, $sections);
+		$sectionNames = array_map(
+			function (Section $s) {
+				return $s->getName();
+			}, $sections
+		);
 
 		// Show info
 		$this->logger->log(sprintf('Found sections: %d (%s)', count($sectionNames), implode(',', $sectionNames)));
@@ -83,7 +90,11 @@ public function run(Config $config): void
 	}
 
 	/**
-	 * @throws DeployException
+	 * @param Config $config
+	 * @param Section $section
+	 *
+	 * @return Deployer
+	 * @throws \Exception
 	 */
 	public function createDeployer(Config $config, Section $section): Deployer
 	{
@@ -128,32 +139,36 @@ public function createDeployer(Config $config, Section $section): Deployer
 		$deployment->testMode = $section->isTestMode();
 
 		// Before callbacks
-		$bc = [[], []];
-		foreach ($section->getBeforeCallbacks() as $cb) {
-			$bc[is_callable($cb)][] = $cb;
-		}
-		$deployment->runBefore = $bc[0];
-		$deployment->runBefore[] = function ($server, $logger, $deployer) use ($bc, $config, $section): void {
-			foreach ($bc[1] as $c) {
-				call_user_func_array([$c, 'onBefore'], [$config, $section, $server, $logger, $deployer]);
+		$deployment->runBefore[] = function (Server $server, Logger $logger, Deployer $deployer) use ($config, $section): void {
+			foreach ($section->getBeforeCallbacks() as $bc) {
+				if(is_callable($bc)) {
+				    call_user_func_array($bc, [$config, $section, $server, $logger, $deployer]);
+				} else {
+					$logger->log('Before callback \'' . get_class($bc[0]) . '::' . $bc[1] . '\' not exists.', 'red');
+				}
 			}
 		};
 
 		// After callbacks
-		$ac = [[], []];
-		foreach ($section->getAfterCallbacks() as $cb) {
-			$ac[is_callable($cb)][] = $cb;
-		}
-		$deployment->runAfter = $ac[0];
-		$deployment->runAfter[] = function ($server, $logger, $deployer) use ($ac, $config, $section): void {
-			foreach ($ac[1] as $c) {
-				call_user_func_array([$c, 'onAfter'], [$config, $section, $server, $logger, $deployer]);
+		$deployment->runAfter[] = function (Server $server, Logger $logger, Deployer $deployer) use ($config, $section): void {
+			foreach ($section->getAfterCallbacks() as $ac) {
+				if(is_callable($ac)) {
+					call_user_func_array($ac, [$config, $section, $server, $logger, $deployer]);
+				} else {
+					$logger->log('After callback \'' . get_class($ac[0]) . '::' . $ac[1] . '\' not exists.', 'red');
+				}
 			}
 		};
 
 		return $deployment;
 	}
 
+	/**
+	* @param Section $section
+	*
+	* @return Server
+	* @throws \Exception
+	*/
 	protected function createServer(Section $section): Server
 	{
 		return parse_url((string) $section->getRemote(), PHP_URL_SCHEME) === 'sftp'