Add core support for extendable authentication

add support for passwordless user creation; add filament loading support
for new laravel modules namespacing;
add support for pluggable password reset and login rules

app/Actions/Fortify/ResetUserPassword.php

@@ -5,8 +5,12 @@ declare(strict_types=1);
 namespace App\Actions\Fortify;
 
 use App\Models\User;
+use App\Providers\FortifyServiceProvider;
+use Illuminate\Auth\Passwords\PasswordBroker;
 use Illuminate\Support\Facades\Hash;
+use Illuminate\Support\Facades\Password;
 use Illuminate\Support\Facades\Validator;
+use Illuminate\Validation\ValidationException;
 use Laravel\Fortify\Contracts\ResetsUserPasswords;
 
 class ResetUserPassword implements ResetsUserPasswords
@@ -20,6 +24,16 @@ class ResetUserPassword implements ResetsUserPasswords
      */
     public function reset(User $user, array $input): void
     {
+        if (! FortifyServiceProvider::canResetPassword($user, $input)) {
+            /** @var PasswordBroker $broker */
+            $broker = Password::broker(config('fortify.passwords'));
+            $broker->deleteToken($user);
+
+            throw ValidationException::withMessages([
+                'email' => [__('This password reset link is invalid.')],
+            ]);
+        }
+
         Validator::make($input, [
             'password' => $this->passwordRules(),
         ])->validate();

app/Models/User.php

@@ -145,11 +145,21 @@ class User extends Authenticatable implements AuditableContract, FilamentUser, M
         return 'https://ui-avatars.com/api/?name='.urlencode($name).'&color=7F9CF5&background=EBF4FF';
     }
 
-    public function canAccessPanel(Panel $panel): bool
+    public function isSuperAdmin(): bool
     {
         return in_array($this->email, config('auth.super_admins', []), true) && $this->hasVerifiedEmail();
     }
 
+    public function hasLocalPassword(): bool
+    {
+        return is_string($this->password) && $this->password !== '';
+    }
+
+    public function canAccessPanel(Panel $panel): bool
+    {
+        return $this->isSuperAdmin();
+    }
+
     public function isMemberOfOrganization(Organization $organization): bool
     {
         if ($this->relationLoaded('organizations')) {

app/Providers/Filament/AdminPanelProvider.php

@@ -26,6 +26,7 @@ use Illuminate\Session\Middleware\StartSession;
 use Illuminate\Support\Facades\App;
 use Illuminate\View\Middleware\ShareErrorsFromSession;
 use Nwidart\Modules\Facades\Module;
+use Nwidart\Modules\Laravel\Module as LaravelModule;
 use pxlrbt\FilamentEnvironmentIndicator\EnvironmentIndicatorPlugin;
 
 class AdminPanelProvider extends PanelProvider
@@ -91,22 +92,77 @@ class AdminPanelProvider extends PanelProvider
         $modules = Module::allEnabled();
 
         foreach ($modules as $module) {
+            $moduleNamespace = $this->getModuleAppNamespace($module);
+
             $panel->discoverResources(
                 in: module_path($module->getName(), 'app/Filament/Resources'),
-                for: 'Extensions\\'.$module->getName().'\\App\\Filament\\Resources'
+                for: $moduleNamespace.'\\Filament\\Resources'
             );
 
             $panel->discoverPages(
                 in: module_path($module->getName(), 'app/Filament/Pages'),
-                for: 'Extensions\\'.$module->getName().'\\App\\Filament\\Pages'
+                for: $moduleNamespace.'\\Filament\\Pages'
             );
 
             $panel->discoverWidgets(
                 in: module_path($module->getName(), 'app/Filament/Widgets'),
-                for: 'Extensions\\'.$module->getName().'\\App\\Filament\\Widgets'
+                for: $moduleNamespace.'\\Filament\\Widgets'
             );
         }
 
         return $panel;
     }
+
+    /** @var array<string, string> Cache of module name => resolved app namespace. */
+    private static array $moduleAppNamespaces = [];
+
+    private function getModuleAppNamespace(LaravelModule $module): string
+    {
+        return self::$moduleAppNamespaces[$module->getName()] ??= $this->resolveModuleAppNamespace($module);
+    }
+
+    /**
+     * Resolve the PHP namespace mapped to a module's app/ directory so the
+     * Filament panel can discover its Resources/Pages/Widgets under the right
+     * namespace.
+     *
+     * Two module layouts currently coexist in this repo:
+     *   - laravel-modules v12 (app_folder enabled): a bare namespace maps to
+     *     app/ — e.g. "Extensions\SSO\" => app/, so classes are
+     *     Extensions\SSO\Filament\... (this is the current convention).
+     *   - the older layout: an "...\App" namespace maps to app/ — e.g.
+     *     "Extensions\Billing\App\" => app/, so classes are
+     *     Extensions\Billing\App\Filament\...
+     *
+     * The package's own namespace derivation assumes the v12 (bare) layout and
+     * would mis-resolve the legacy modules, so we read each module's composer
+     * PSR-4 map and use whichever namespace actually points at app/. The legacy
+     * "...\App" shape is only a fallback for when composer is missing/unreadable.
+     * Once every module adopts the bare layout this collapses to
+     * config('modules.namespace').'\\'.$module->getName().
+     */
+    private function resolveModuleAppNamespace(LaravelModule $module): string
+    {
+        $fallback = 'Extensions\\'.$module->getName().'\\App';
+
+        $composerPath = module_path($module->getName(), 'composer.json');
+        $psr4 = [];
+        if (is_file($composerPath)) {
+            $composer = json_decode((string) file_get_contents($composerPath), true);
+            $psr4 = is_array($composer) ? ($composer['autoload']['psr-4'] ?? []) : [];
+        }
+
+        foreach ((array) $psr4 as $namespace => $path) {
+            if (is_string($namespace) && $this->normalizeComposerPath($path) === 'app') {
+                return rtrim($namespace, '\\');
+            }
+        }
+
+        return $fallback;
+    }
+
+    private function normalizeComposerPath(mixed $path): string
+    {
+        return trim(str_replace('\\', '/', (string) $path), '/');
+    }
 }

app/Providers/FortifyServiceProvider.php

@@ -25,6 +25,73 @@ use Laravel\Fortify\Fortify;
 
 class FortifyServiceProvider extends ServiceProvider
 {
+    /**
+     * Dummy bcrypt hash compared against when no user matches the submitted
+     * email. Hash::check is run against it so login takes the same time whether
+     * or not the email exists — otherwise an unknown email would skip the
+     * (deliberately slow) hash and return faster, letting an attacker enumerate
+     * registered accounts by timing the response. The plaintext is irrelevant:
+     * it is only ever checked against attacker-supplied input and never matches.
+     */
+    private const ABSENT_USER_PASSWORD_HASH = '$2y$12$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2.uheWG/igi';
+
+    /**
+     * Authorization rules applied AFTER the password is verified. Each rule
+     * receives the authenticated user + request and returns whether the login
+     * may proceed; any rule returning false denies it. This is an extension
+     * point: modules (e.g. SSO enforcement) add a rule to veto a password login
+     * instead of replacing this credential check — which would silently drift
+     * from the host logic the next time it changes.
+     *
+     * @var array<int, \Closure(User, Request): bool>
+     */
+    protected static array $loginRules = [];
+
+    /**
+     * Authorization rules applied before a password reset is completed. Rules
+     * receive the user being reset + submitted input and return whether the
+     * local reset flow may set a new password for that account.
+     *
+     * @var array<int, \Closure(User, array<string, mixed>): bool>
+     */
+    protected static array $passwordResetRules = [];
+
+    /**
+     * Register an additional rule that gates password login (see $loginRules).
+     *
+     * @param  \Closure(User, Request): bool  $rule
+     */
+    public static function authenticateUsingRule(\Closure $rule): void
+    {
+        static::$loginRules[] = $rule;
+    }
+
+    /**
+     * Register an additional rule that gates password reset completion.
+     *
+     * @param  \Closure(User, array<string, mixed>): bool  $rule
+     */
+    public static function resetPasswordUsingRule(\Closure $rule): void
+    {
+        static::$passwordResetRules[] = $rule;
+    }
+
+    /**
+     * Check whether the given user may complete the local password reset flow.
+     *
+     * @param  array<string, mixed>  $input
+     */
+    public static function canResetPassword(User $user, array $input = []): bool
+    {
+        foreach (static::$passwordResetRules as $rule) {
+            if (! $rule($user, $input)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
     /**
      * Register any application services.
      */
@@ -92,7 +159,23 @@ class FortifyServiceProvider extends ServiceProvider
                 ->where('is_placeholder', '=', false)
                 ->first();
 
-            if ($user !== null && Hash::check($request->password, $user->password)) {
+            // Always run the hash check — against the real hash, or a dummy when
+            // there is no user — so login timing is identical either way (see
+            // ABSENT_USER_PASSWORD_HASH). Passwordless accounts (SSO-only users
+            // have password = null) fail here, so they cannot password-login.
+            $existingPasswordHash = $user->password ?? self::ABSENT_USER_PASSWORD_HASH;
+
+            $passwordIsValid = Hash::check((string) $request->password, $existingPasswordHash);
+
+            if ($user !== null && $passwordIsValid) {
+                // Credentials are valid; now apply any registered authorization
+                // rules (e.g. SSO enforcement may still block password login).
+                foreach (static::$loginRules as $rule) {
+                    if (! $rule($user, $request)) {
+                        return null;
+                    }
+                }
+
                 return $user;
             }
 

app/Service/UserService.php

@@ -48,6 +48,56 @@ class UserService
         }
         $user->save();
 
+        $this->createDefaultOrganizationForUser(
+            $user,
+            $currency,
+            $numberFormat,
+            $currencyFormat,
+            $dateFormat,
+            $intervalFormat,
+            $timeFormat,
+        );
+
+        return $user;
+    }
+
+    /**
+     * Create a user without a password (e.g. provisioned via SSO). Such users
+     * can only authenticate through a linked identity provider.
+     */
+    public function createPasswordlessUser(
+        string $name,
+        string $email,
+        string $timezone,
+        Weekday $weekStart,
+        ?string $currency,
+        bool $verifyEmail = false
+    ): User {
+        $user = new User;
+        $user->name = $name;
+        $user->email = strtolower($email);
+        $user->password = null;
+        $user->timezone = $timezone;
+        $user->week_start = $weekStart;
+        if ($verifyEmail) {
+            $user->email_verified_at = Carbon::now();
+        }
+        $user->save();
+
+        $this->createDefaultOrganizationForUser($user, $currency);
+
+        return $user;
+    }
+
+    private function createDefaultOrganizationForUser(
+        User $user,
+        ?string $currency,
+        ?NumberFormat $numberFormat = null,
+        ?CurrencyFormat $currencyFormat = null,
+        ?DateFormat $dateFormat = null,
+        ?IntervalFormat $intervalFormat = null,
+        ?TimeFormat $timeFormat = null,
+    ): void {
         $organizations = app(InvitationService::class)->processAcceptedInvitations($user);
 
         if ($organizations->isEmpty()) {
@@ -64,8 +114,6 @@ class UserService
             );
             $this->switchCurrentOrganization($user, $organization);
         }
-
-        return $user;
     }
 
     /**