Dont accept connections when application down

app/Classes/Protocol.php

@@ -124,6 +124,8 @@ abstract class Protocol
 	protected bool $originate;
 	/** Our comms details */
 
+	protected bool $down = FALSE;
+
 	private array $comms;
 
 	protected bool $force_queue = FALSE;
@@ -366,6 +368,9 @@ abstract class Protocol
 		// We are an IP node
 		$this->optionSet(self::O_TCP);
 		$this->client = $client;
+		// @todo This appears to be a bug in laravel? Need to call app()->isDownForMaintenance() twice?
+		app()->isDownForMaintenance();
+		$this->down = app()->isDownForMaintenance();
 
 		switch ($mo->name) {
 			case 'EMSI':

app/Classes/Protocol/Binkp.php

@@ -168,10 +168,21 @@ final class Binkp extends BaseProtocol
 	 *
 	 * @throws \Exception
 	 */
-	private function binkp_hs(): void
+	private function binkp_hs(): bool
 	{
 		Log::debug(sprintf('%s:+ Starting BINKP handshake',self::LOGKEY));
 
+		if (! $this->originate && $this->down) {
+			Log::info(sprintf('%s:! System down for maintenance',self::LOGKEY));
+
+			$this->msgs(self::BPM_BSY,'RETRY 0600: Down for maintenance, back soon...');
+
+			while ($this->tx_left || $this->mqueue->count())
+				$this->binkp_send();
+
+			return FALSE;
+		}
+
 		if (! $this->originate && $this->capGet(self::F_MD,self::O_WANT)) {
 			$random_key = random_bytes(8);
 			$this->md_challenge = md5($random_key,TRUE);
@@ -206,6 +217,8 @@ final class Binkp extends BaseProtocol
 
 			$this->msgs(self::BPM_ADR,$addresses->pluck('ftn')->join(' '));
 		}
+
+		return TRUE;
 	}
 
 	/**
@@ -1341,7 +1354,8 @@ final class Binkp extends BaseProtocol
 			return self::S_FAILURE;
 
 		$this->force_queue = $force_queue;
-		$this->binkp_hs();
+		if (! $this->binkp_hs())
+			return self::S_FAILURE;
 
 		while (TRUE) {
 			if ((! $this->sessionGet(self::SE_INIT))

app/Classes/Protocol/EMSI.php

@@ -930,6 +930,14 @@ final class EMSI extends BaseProtocol implements CRCInterface,ZmodemInterface
 
 		$this->client->rx_purge();
 		$this->client->tx_purge();
+
+		if ($this->down) {
+			Log::info(sprintf('%s:! System down for maintenance',self::LOGKEY));
+			$this->client->buffer_add(self::EMSI_NAK.'Sorry down for maintenance, call back again after a few minutes'.self::CR.self::CR);
+			$this->client->buffer_flush(5);
+			return -1;
+		}
+
 		$this->emsi_banner();
 
 		$t1 = $this->client->timer_set(self::EMSI_HSTIMEOUT);

config/app.php

@@ -2,239 +2,245 @@
 
 return [
 
-    /*
+	/*
-    |--------------------------------------------------------------------------
+	|--------------------------------------------------------------------------
-    | Application Name
+	| Application Name
-    |--------------------------------------------------------------------------
+	|--------------------------------------------------------------------------
-    |
+	|
-    | This value is the name of your application. This value is used when the
+	| This value is the name of your application. This value is used when the
-    | framework needs to place the application's name in a notification or
+	| framework needs to place the application's name in a notification or
-    | any other location as required by the application or its packages.
+	| any other location as required by the application or its packages.
-    |
+	|
-    */
+	*/
 
-    'name' => env('APP_NAME', 'Laravel'),
+	'name' => env('APP_NAME', 'Laravel'),
-    'id' => env('APP_SETUP_ID', 1),
+	'id' => env('APP_SETUP_ID', 1),
 
-    /*
+	/*
-    |--------------------------------------------------------------------------
+	|--------------------------------------------------------------------------
-    | Application Environment
+	| Application Environment
-    |--------------------------------------------------------------------------
+	|--------------------------------------------------------------------------
-    |
+	|
-    | This value determines the "environment" your application is currently
+	| This value determines the "environment" your application is currently
-    | running in. This may determine how you prefer to configure various
+	| running in. This may determine how you prefer to configure various
-    | services the application utilizes. Set this in your ".env" file.
+	| services the application utilizes. Set this in your ".env" file.
-    |
+	|
-    */
+	*/
 
-    'env' => env('APP_ENV', 'production'),
+	'env' => env('APP_ENV', 'production'),
 
-    /*
+	/*
-    |--------------------------------------------------------------------------
+	|--------------------------------------------------------------------------
-    | Application Debug Mode
+	| Application Debug Mode
-    |--------------------------------------------------------------------------
+	|--------------------------------------------------------------------------
-    |
+	|
-    | When your application is in debug mode, detailed error messages with
+	| When your application is in debug mode, detailed error messages with
-    | stack traces will be shown on every error that occurs within your
+	| stack traces will be shown on every error that occurs within your
-    | application. If disabled, a simple generic error page is shown.
+	| application. If disabled, a simple generic error page is shown.
-    |
+	|
-    */
+	*/
 
-    'debug' => (bool) env('APP_DEBUG', false),
+	'debug' => (bool) env('APP_DEBUG', false),
 
-    /*
+	// Where the maintenance mode file is stored when calling down
-    |--------------------------------------------------------------------------
+	'maintenance' => [
-    | Application URL
+		'driver' => 'cache',
-    |--------------------------------------------------------------------------
+		//'store' => 'memcached',
-    |
+	],
-    | This URL is used by the console to properly generate URLs when using
-    | the Artisan command line tool. You should set this to the root of
-    | your application so that it is used when running Artisan tasks.
-    |
-    */
 
-    'url' => env('APP_URL', 'http://localhost'),
+	/*
+	|--------------------------------------------------------------------------
+	| Application URL
+	|--------------------------------------------------------------------------
+	|
+	| This URL is used by the console to properly generate URLs when using
+	| the Artisan command line tool. You should set this to the root of
+	| your application so that it is used when running Artisan tasks.
+	|
+	*/
 
-    'asset_url' => env('ASSET_URL', null),
+	'url' => env('APP_URL', 'http://localhost'),
 
-    /*
+	'asset_url' => env('ASSET_URL', null),
-    |--------------------------------------------------------------------------
-    | Application Timezone
-    |--------------------------------------------------------------------------
-    |
-    | Here you may specify the default timezone for your application, which
-    | will be used by the PHP date and date-time functions. We have gone
-    | ahead and set this to a sensible default for you out of the box.
-    |
-    */
 
-    'timezone' => env('APP_TIMEZONE', 'UTC'),
+	/*
+	|--------------------------------------------------------------------------
+	| Application Timezone
+	|--------------------------------------------------------------------------
+	|
+	| Here you may specify the default timezone for your application, which
+	| will be used by the PHP date and date-time functions. We have gone
+	| ahead and set this to a sensible default for you out of the box.
+	|
+	*/
 
-    /*
+	'timezone' => env('APP_TIMEZONE', 'UTC'),
-    |--------------------------------------------------------------------------
-    | Application Locale Configuration
-    |--------------------------------------------------------------------------
-    |
-    | The application locale determines the default locale that will be used
-    | by the translation service provider. You are free to set this value
-    | to any of the locales which will be supported by the application.
-    |
-    */
 
-    'locale' => 'en',
+	/*
+	|--------------------------------------------------------------------------
+	| Application Locale Configuration
+	|--------------------------------------------------------------------------
+	|
+	| The application locale determines the default locale that will be used
+	| by the translation service provider. You are free to set this value
+	| to any of the locales which will be supported by the application.
+	|
+	*/
 
-    /*
+	'locale' => 'en',
-    |--------------------------------------------------------------------------
-    | Application Fallback Locale
-    |--------------------------------------------------------------------------
-    |
-    | The fallback locale determines the locale to use when the current one
-    | is not available. You may change the value to correspond to any of
-    | the language folders that are provided through your application.
-    |
-    */
 
-    'fallback_locale' => 'en',
+	/*
+	|--------------------------------------------------------------------------
+	| Application Fallback Locale
+	|--------------------------------------------------------------------------
+	|
+	| The fallback locale determines the locale to use when the current one
+	| is not available. You may change the value to correspond to any of
+	| the language folders that are provided through your application.
+	|
+	*/
 
-    /*
+	'fallback_locale' => 'en',
-    |--------------------------------------------------------------------------
-    | Faker Locale
-    |--------------------------------------------------------------------------
-    |
-    | This locale will be used by the Faker PHP library when generating fake
-    | data for your database seeds. For example, this will be used to get
-    | localized telephone numbers, street address information and more.
-    |
-    */
 
-    'faker_locale' => 'en_US',
+	/*
+	|--------------------------------------------------------------------------
+	| Faker Locale
+	|--------------------------------------------------------------------------
+	|
+	| This locale will be used by the Faker PHP library when generating fake
+	| data for your database seeds. For example, this will be used to get
+	| localized telephone numbers, street address information and more.
+	|
+	*/
 
-    /*
+	'faker_locale' => 'en_US',
-    |--------------------------------------------------------------------------
-    | Encryption Key
-    |--------------------------------------------------------------------------
-    |
-    | This key is used by the Illuminate encrypter service and should be set
-    | to a random, 32 character string, otherwise these encrypted strings
-    | will not be safe. Please do this before deploying an application!
-    |
-    */
 
-    'key' => env('APP_KEY'),
+	/*
+	|--------------------------------------------------------------------------
+	| Encryption Key
+	|--------------------------------------------------------------------------
+	|
+	| This key is used by the Illuminate encrypter service and should be set
+	| to a random, 32 character string, otherwise these encrypted strings
+	| will not be safe. Please do this before deploying an application!
+	|
+	*/
 
-    'cipher' => 'AES-256-CBC',
+	'key' => env('APP_KEY'),
 
-    /*
+	'cipher' => 'AES-256-CBC',
-    |--------------------------------------------------------------------------
-    | Autoloaded Service Providers
-    |--------------------------------------------------------------------------
-    |
-    | The service providers listed here will be automatically loaded on the
-    | request to your application. Feel free to add your own services to
-    | this array to grant expanded functionality to your applications.
-    |
-    */
 
-    'providers' => [
+	/*
+	|--------------------------------------------------------------------------
+	| Autoloaded Service Providers
+	|--------------------------------------------------------------------------
+	|
+	| The service providers listed here will be automatically loaded on the
+	| request to your application. Feel free to add your own services to
+	| this array to grant expanded functionality to your applications.
+	|
+	*/
 
-        /*
+	'providers' => [
-         * Laravel Framework Service Providers...
-         */
-        Illuminate\Auth\AuthServiceProvider::class,
-        Illuminate\Broadcasting\BroadcastServiceProvider::class,
-        Illuminate\Bus\BusServiceProvider::class,
-        Illuminate\Cache\CacheServiceProvider::class,
-        Illuminate\Foundation\Providers\ConsoleSupportServiceProvider::class,
-        Illuminate\Cookie\CookieServiceProvider::class,
-        Illuminate\Database\DatabaseServiceProvider::class,
-        Illuminate\Encryption\EncryptionServiceProvider::class,
-        Illuminate\Filesystem\FilesystemServiceProvider::class,
-        Illuminate\Foundation\Providers\FoundationServiceProvider::class,
-        Illuminate\Hashing\HashServiceProvider::class,
-        Illuminate\Mail\MailServiceProvider::class,
-        Illuminate\Notifications\NotificationServiceProvider::class,
-        Illuminate\Pagination\PaginationServiceProvider::class,
-        Illuminate\Pipeline\PipelineServiceProvider::class,
-        Illuminate\Queue\QueueServiceProvider::class,
-        Illuminate\Redis\RedisServiceProvider::class,
-        Illuminate\Auth\Passwords\PasswordResetServiceProvider::class,
-        Illuminate\Session\SessionServiceProvider::class,
-        Illuminate\Translation\TranslationServiceProvider::class,
-        Illuminate\Validation\ValidationServiceProvider::class,
-        Illuminate\View\ViewServiceProvider::class,
 
-        /*
+		/*
-         * Package Service Providers...
+		 * Laravel Framework Service Providers...
-         */
+		 */
+		Illuminate\Auth\AuthServiceProvider::class,
+		Illuminate\Broadcasting\BroadcastServiceProvider::class,
+		Illuminate\Bus\BusServiceProvider::class,
+		Illuminate\Cache\CacheServiceProvider::class,
+		Illuminate\Foundation\Providers\ConsoleSupportServiceProvider::class,
+		Illuminate\Cookie\CookieServiceProvider::class,
+		Illuminate\Database\DatabaseServiceProvider::class,
+		Illuminate\Encryption\EncryptionServiceProvider::class,
+		Illuminate\Filesystem\FilesystemServiceProvider::class,
+		Illuminate\Foundation\Providers\FoundationServiceProvider::class,
+		Illuminate\Hashing\HashServiceProvider::class,
+		Illuminate\Mail\MailServiceProvider::class,
+		Illuminate\Notifications\NotificationServiceProvider::class,
+		Illuminate\Pagination\PaginationServiceProvider::class,
+		Illuminate\Pipeline\PipelineServiceProvider::class,
+		Illuminate\Queue\QueueServiceProvider::class,
+		Illuminate\Redis\RedisServiceProvider::class,
+		Illuminate\Auth\Passwords\PasswordResetServiceProvider::class,
+		Illuminate\Session\SessionServiceProvider::class,
+		Illuminate\Translation\TranslationServiceProvider::class,
+		Illuminate\Validation\ValidationServiceProvider::class,
+		Illuminate\View\ViewServiceProvider::class,
 
-        /*
+		/*
-         * Application Service Providers...
+		 * Package Service Providers...
-         */
+		 */
-        App\Providers\AppServiceProvider::class,
-        App\Providers\AuthServiceProvider::class,
-        // App\Providers\BroadcastServiceProvider::class,
-        App\Providers\EventServiceProvider::class,
-        App\Providers\RouteServiceProvider::class,
-        App\Providers\CustomBladeServiceProvider::class,
 
-        /*
+		/*
-         * Other Service Providers...
+		 * Application Service Providers...
-         */
+		 */
-    ],
+		App\Providers\AppServiceProvider::class,
+		App\Providers\AuthServiceProvider::class,
+		// App\Providers\BroadcastServiceProvider::class,
+		App\Providers\EventServiceProvider::class,
+		App\Providers\RouteServiceProvider::class,
+		App\Providers\CustomBladeServiceProvider::class,
 
-    /*
+		/*
-    |--------------------------------------------------------------------------
+		 * Other Service Providers...
-    | Class Aliases
+		 */
-    |--------------------------------------------------------------------------
+	],
-    |
-    | This array of class aliases will be registered when this application
-    | is started. However, feel free to register as many as you wish as
-    | the aliases are "lazy" loaded so they don't hinder performance.
-    |
-    */
 
-    'aliases' => [
+	/*
+	|--------------------------------------------------------------------------
+	| Class Aliases
+	|--------------------------------------------------------------------------
+	|
+	| This array of class aliases will be registered when this application
+	| is started. However, feel free to register as many as you wish as
+	| the aliases are "lazy" loaded so they don't hinder performance.
+	|
+	*/
 
-        'App' => Illuminate\Support\Facades\App::class,
+	'aliases' => [
-        'Arr' => Illuminate\Support\Arr::class,
-        'Artisan' => Illuminate\Support\Facades\Artisan::class,
-        'Asset' => Orchestra\Support\Facades\Asset::class,
-        'Auth' => Illuminate\Support\Facades\Auth::class,
-        'Blade' => Illuminate\Support\Facades\Blade::class,
-        'Broadcast' => Illuminate\Support\Facades\Broadcast::class,
-        'Bus' => Illuminate\Support\Facades\Bus::class,
-        'Carbon' => \Carbon\Carbon::class,
-        'Cache' => Illuminate\Support\Facades\Cache::class,
-        'Config' => Illuminate\Support\Facades\Config::class,
-        'Cookie' => Illuminate\Support\Facades\Cookie::class,
-        'Crypt' => Illuminate\Support\Facades\Crypt::class,
-        'Date' => Illuminate\Support\Facades\Date::class,
-        'DB' => Illuminate\Support\Facades\DB::class,
-        'Eloquent' => Illuminate\Database\Eloquent\Model::class,
-        'Event' => Illuminate\Support\Facades\Event::class,
-        'File' => Illuminate\Support\Facades\File::class,
-        'Gate' => Illuminate\Support\Facades\Gate::class,
-        'Hash' => Illuminate\Support\Facades\Hash::class,
-        'Http' => Illuminate\Support\Facades\Http::class,
-        'Lang' => Illuminate\Support\Facades\Lang::class,
-        'Log' => Illuminate\Support\Facades\Log::class,
-        'Mail' => Illuminate\Support\Facades\Mail::class,
-        'Notification' => Illuminate\Support\Facades\Notification::class,
-        'Password' => Illuminate\Support\Facades\Password::class,
-        'Queue' => Illuminate\Support\Facades\Queue::class,
-        'Redirect' => Illuminate\Support\Facades\Redirect::class,
-        'Redis' => Illuminate\Support\Facades\Redis::class,
-        'Request' => Illuminate\Support\Facades\Request::class,
-        'Response' => Illuminate\Support\Facades\Response::class,
-        'Route' => Illuminate\Support\Facades\Route::class,
-        'Schema' => Illuminate\Support\Facades\Schema::class,
-        'Session' => Illuminate\Support\Facades\Session::class,
-        'Storage' => Illuminate\Support\Facades\Storage::class,
-        'Str' => Illuminate\Support\Str::class,
-        'URL' => Illuminate\Support\Facades\URL::class,
-        'Validator' => Illuminate\Support\Facades\Validator::class,
-        'View' => Illuminate\Support\Facades\View::class,
 
-    ],
+		'App' => Illuminate\Support\Facades\App::class,
+		'Arr' => Illuminate\Support\Arr::class,
+		'Artisan' => Illuminate\Support\Facades\Artisan::class,
+		'Asset' => Orchestra\Support\Facades\Asset::class,
+		'Auth' => Illuminate\Support\Facades\Auth::class,
+		'Blade' => Illuminate\Support\Facades\Blade::class,
+		'Broadcast' => Illuminate\Support\Facades\Broadcast::class,
+		'Bus' => Illuminate\Support\Facades\Bus::class,
+		'Carbon' => \Carbon\Carbon::class,
+		'Cache' => Illuminate\Support\Facades\Cache::class,
+		'Config' => Illuminate\Support\Facades\Config::class,
+		'Cookie' => Illuminate\Support\Facades\Cookie::class,
+		'Crypt' => Illuminate\Support\Facades\Crypt::class,
+		'Date' => Illuminate\Support\Facades\Date::class,
+		'DB' => Illuminate\Support\Facades\DB::class,
+		'Eloquent' => Illuminate\Database\Eloquent\Model::class,
+		'Event' => Illuminate\Support\Facades\Event::class,
+		'File' => Illuminate\Support\Facades\File::class,
+		'Gate' => Illuminate\Support\Facades\Gate::class,
+		'Hash' => Illuminate\Support\Facades\Hash::class,
+		'Http' => Illuminate\Support\Facades\Http::class,
+		'Lang' => Illuminate\Support\Facades\Lang::class,
+		'Log' => Illuminate\Support\Facades\Log::class,
+		'Mail' => Illuminate\Support\Facades\Mail::class,
+		'Notification' => Illuminate\Support\Facades\Notification::class,
+		'Password' => Illuminate\Support\Facades\Password::class,
+		'Queue' => Illuminate\Support\Facades\Queue::class,
+		'Redirect' => Illuminate\Support\Facades\Redirect::class,
+		'Redis' => Illuminate\Support\Facades\Redis::class,
+		'Request' => Illuminate\Support\Facades\Request::class,
+		'Response' => Illuminate\Support\Facades\Response::class,
+		'Route' => Illuminate\Support\Facades\Route::class,
+		'Schema' => Illuminate\Support\Facades\Schema::class,
+		'Session' => Illuminate\Support\Facades\Session::class,
+		'Storage' => Illuminate\Support\Facades\Storage::class,
+		'Str' => Illuminate\Support\Str::class,
+		'URL' => Illuminate\Support\Facades\URL::class,
+		'Validator' => Illuminate\Support\Facades\Validator::class,
+		'View' => Illuminate\Support\Facades\View::class,
+
+	],
 
 ];