Make hardening work with all db/schema managers

Previously, hardening only worked with databases, not with schemas. Also test that hardening works with all relevant db managers.

src/Bootstrappers/DatabaseTenancyBootstrapper.php

@@ -90,7 +90,9 @@ class DatabaseTenancyBootstrapper implements TenancyBootstrapper
     protected function verifyTenantCanUseDatabase(Tenant $tenant): void
     {
         /** @var \Stancl\Tenancy\Database\Models\Tenant&TenantWithDatabase $tenant */
-        $tenantDbName = $tenant->database()->getName();
+
+        $tenantDbConfig = $tenant->database();
+        $tenantDbName = $tenantDbConfig->getName();
 
         // Check that no other tenant uses this tenant's database
         if ($tenant::where($tenant->getTenantKeyName(), '!=', $tenant->getTenantKey())
@@ -99,13 +101,14 @@ class DatabaseTenancyBootstrapper implements TenancyBootstrapper
             throw new RuntimeException('Tenant cannot use a database of another tenant.');
         }
 
-        $centralDbName = DB::connection(
-            config('tenancy.database.central_connection', 'central')
-        )->getDatabaseName();
+        $manager = $tenantDbConfig->manager();
 
-        if (DB::getDatabaseName() === $centralDbName) {
-            // Throw if the current database is central.
-            // DB::getDatabaseName() is the current DB name, which should not be central at this point.
+        $centralConnection = DB::connection(config('tenancy.database.central_connection', 'central'));
+        $currentConnection = DB::connection();
+
+        // Throw if the current database/schema is central.
+        // At this point the connection should be the tenant's, so it should not match central.
+        if ($manager->getCurrentDatabaseName($currentConnection) === $manager->getCurrentDatabaseName($centralConnection)) {
             throw new RuntimeException('Tenant cannot use the central database.');
         }
     }

src/Database/Contracts/TenantDatabaseManager.php

@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Database\Contracts;
 
+use Illuminate\Database\Connection;
+
 interface TenantDatabaseManager
 {
     /** Create a database. */
@@ -17,4 +19,12 @@ interface TenantDatabaseManager
 
     /** Construct a DB connection config array. */
     public function makeConnectionConfig(array $baseConfig, string $databaseName): array;
+
+    /**
+     * Get the schema/database name that the given connection points to.
+     *
+     * In database managers, this should return the *database* name of the passed connection,
+     * while in schema managers, this should return the *schema* name of the passed connection.
+     */
+    public function getCurrentDatabaseName(Connection $connection): string;
 }

src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php

@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
+use Illuminate\Database\Connection;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
 
 class PostgreSQLSchemaManager extends TenantDatabaseManager
@@ -37,4 +38,10 @@ class PostgreSQLSchemaManager extends TenantDatabaseManager
 
         return $baseConfig;
     }
+
+    public function getCurrentDatabaseName(Connection $connection): string
+    {
+        // Get the *schema* name (not the database name)
+        return $connection->selectOne('SELECT current_schema() AS schema')->schema;
+    }
 }

src/Database/TenantDatabaseManagers/SQLiteDatabaseManager.php

@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
 use Closure;
+use Illuminate\Database\Connection;
 use Illuminate\Database\Eloquent\Model;
 use InvalidArgumentException;
 use PDO;
@@ -149,6 +150,11 @@ class SQLiteDatabaseManager implements TenantDatabaseManager
         return $baseConfig;
     }
 
+    public function getCurrentDatabaseName(Connection $connection): string
+    {
+        return $connection->getDatabaseName();
+    }
+
     public function getPath(string $name): string
     {
         $this->validateDatabaseName($name);

src/Database/TenantDatabaseManagers/TenantDatabaseManager.php

@@ -37,4 +37,9 @@ abstract class TenantDatabaseManager implements StatefulTenantDatabaseManager
 
         return $baseConfig;
     }
+
+    public function getCurrentDatabaseName(Connection $connection): string
+    {
+        return $connection->getDatabaseName();
+    }
 }

tests/Bootstrappers/DatabaseTenancyBootstrapperTest.php

@@ -13,6 +13,10 @@ use Stancl\Tenancy\Tests\Etc\Tenant;
 use Illuminate\Support\Str;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Database\QueryException;
+use Stancl\Tenancy\Database\TenantDatabaseManagers\MySQLDatabaseManager;
+use Stancl\Tenancy\Database\TenantDatabaseManagers\SQLiteDatabaseManager;
+use Stancl\Tenancy\Database\TenantDatabaseManagers\PostgreSQLDatabaseManager;
+use Stancl\Tenancy\Database\TenantDatabaseManagers\PostgreSQLSchemaManager;
 
 use function Stancl\Tenancy\Tests\pest;
 
@@ -29,9 +33,21 @@ beforeEach(function () use ($cleanup) {
 
 afterEach($cleanup);
 
-test('harden prevents tenants from using the central database', function ($harden) {
+test('harden prevents tenants from using the central database', function (bool $harden, string $connection, string $manager) {
     config([
         'tenancy.bootstrappers' => [DatabaseTenancyBootstrapper::class],
+        "tenancy.database.managers.{$connection}" => $manager,
+    ]);
+
+    // Set up and migrate the central database
+    $centralConnection = config('tenancy.database.central_connection');
+    DB::purge($centralConnection);
+    config(["database.connections.{$centralConnection}" => config("database.connections.{$connection}")]);
+
+    pest()->artisan('migrate:fresh', [
+        '--force' => true,
+        '--path' => __DIR__ . '/../../assets/migrations',
+        '--realpath' => true,
     ]);
 
     DatabaseTenancyBootstrapper::$harden = $harden;
@@ -40,18 +56,18 @@ test('harden prevents tenants from using the central database', function ($harde
         return $event->tenant;
     })->toListener());
 
-    $tenant = Tenant::create();
-
+    // Create the tenant with its own database, then repoint it at the central database/schema.
+    $tenant = Tenant::create(['tenancy_db_connection' => $connection]);
     $tenant->update([
-        'tenancy_db_name' => config('database.connections.central.database'), // Central database name
+        'tenancy_db_name' => $tenant->database()->manager()->getCurrentDatabaseName(DB::connection($centralConnection)),
     ]);
 
     if ($harden) {
-        // Harden blocks initialization for tenants that use central database
+        // Harden blocks initialization for tenants that use the central database
         expect(fn () => tenancy()->initialize($tenant))->toThrow(RuntimeException::class);
 
         // Connection should be reverted back to central
-        expect(DB::connection()->getName())->toBe('central');
+        expect(DB::connection()->getName())->toBe($centralConnection);
     } else {
         expect(fn () => tenancy()->initialize($tenant))->not()->toThrow(Throwable::class);
 
@@ -61,11 +77,12 @@ test('harden prevents tenants from using the central database', function ($harde
 })->with([
     'hardening enabled' => true,
     'hardening disabled' => false,
-]);
+])->with('db_managers');
 
-test('harden prevents tenants from using a database of another tenant', function (bool $harden, string $connection) {
+test('harden prevents tenants from using a database of another tenant', function (bool $harden, string $connection, string $manager) {
     config([
         'tenancy.bootstrappers' => [DatabaseTenancyBootstrapper::class],
+        "tenancy.database.managers.{$connection}" => $manager,
     ]);
 
     DatabaseTenancyBootstrapper::$harden = $harden;
@@ -97,10 +114,7 @@ test('harden prevents tenants from using a database of another tenant', function
 })->with([
     'hardening enabled' => true,
     'hardening disabled' => false,
-])->with([
-    'mysql' => 'mysql',
-    'named sqlite' => 'sqlite',
-]);
+])->with('db_managers');
 
 test('database tenancy bootstrapper throws an exception if DATABASE_URL is set', function (string|null $databaseUrl) {
     config(['database.connections.central.url' => $databaseUrl]);
@@ -123,3 +137,14 @@ test('database tenancy bootstrapper throws an exception if DATABASE_URL is set',
         })->not()->toThrow(Throwable::class);
     }
 })->with(['abc.us-east-1.rds.amazonaws.com', null]);
+
+// Database managers to test with hardening.
+// Permission controlled managers omitted as they inherit the non-perm controlled managers (= they share the same code paths),
+// each important code path is covered by testing the non-permission controlled manager, so adding permission controlled managers
+// would add unnecessary complexity to the tests.
+dataset('db_managers', [
+    'mysql' => ['mysql', MySQLDatabaseManager::class],
+    'pgsql (database)' => ['pgsql', PostgreSQLDatabaseManager::class],
+    'pgsql (schema)' => ['pgsql', PostgreSQLSchemaManager::class],
+    'sqlite' => ['sqlite', SQLiteDatabaseManager::class],
+]);