### Install via Composer

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Install the package via Composer.

```bash
composer require jeffersongoncalves/laravel-security-headers
```

--------------------------------

### Skip a header by setting null in config

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Set a header value to null in the config to omit it from the response. This example omits X-Frame-Options.

```php
'headers' => [
    'X-Frame-Options' => null, // omitted from the response
],
```

--------------------------------

### Publish laravel-security-headers config

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Publishes the package configuration file (config/laravel-security-headers.php) to the application's config directory. Use this after installation to customize headers, CSP directives, and HSTS settings.

```bash
php artisan vendor:publish --tag="laravel-security-headers-config"
```

--------------------------------

### Run tests, coverage, static analysis, and formatting

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Commands to run the test suite, generate coverage, perform static analysis with PHPStan, and format code with Pint.

```bash
# Run all tests
vendor/bin/pest

# Run with coverage
vendor/bin/pest --coverage

# Static analysis
vendor/bin/phpstan analyse

# Code formatting
vendor/bin/pint
```

--------------------------------

### Publish Config File

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Publish the package configuration file.

```bash
php artisan vendor:publish --tag="security-headers-config"
```

--------------------------------

### Configure HSTS with max-age, include-subdomains, and preload

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Configure HSTS. Output is 'max-age=<max-age>' plus '; includeSubDomains' and/or '; preload' when those flags are truthy. Never emitted on insecure requests or in local environment.

```php
'hsts' => [
    'enabled' => true,
    'max-age' => 31536000,
    'include-subdomains' => true,
    'preload' => true,
],
```

--------------------------------

### Run tests with composer test

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Run the test suite for the package.

```bash
composer test
```

--------------------------------

### Configure CSP report-only mode and violation reporting

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Enable report-only mode to emit Content-Security-Policy-Report-Only instead of the enforcing header. report-uri and report-to are appended as CSP directives when non-null.

```php
'csp' => [
    'enabled' => true,
    'report-only' => true,
    'report-uri' => 'https://example.com/csp-report', // legacy endpoint
    'report-to' => 'csp-endpoint',                    // Reporting-API group name
    // ...
],
```

--------------------------------

### Configure default strict CSP directives

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Default strict, first-party-only CSP configuration. No 'unsafe-*' or third-party origins; set csp.enabled to false to drop the header entirely.

```php
'csp' => [
    'enabled' => true,
    'directives' => [
        'default-src' => "'self'",
        'script-src' => "'self'",
        'style-src' => "'self'",
        'img-src' => "'self' data:",
        'object-src' => "'none'",
        'base-uri' => "'self'",
        'form-action' => "'self'",
        'frame-ancestors' => "'self'",
    ],
],
```

--------------------------------

### Configure static security headers

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Configure static security headers in config/security-headers.php. Each entry is stamped onto every response; set any value to null to skip that header.

```php
'headers' => [
    'X-Content-Type-Options' => 'nosniff',
    'X-Frame-Options' => 'SAMEORIGIN',
    'Referrer-Policy' => 'strict-origin-when-cross-origin',
    'Permissions-Policy' => 'camera=(), microphone=(), geolocation=(), payment=(), usb=(), browsing-topics=()',
    'Cross-Origin-Opener-Policy' => 'same-origin-allow-popups',
    // Disable a header by setting it to null:
    'X-Permitted-Cross-Domain-Policies' => null,
],
```

--------------------------------

### Apply to Web Group (Laravel 11+)

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Apply the middleware to the web group in bootstrap/app.php for Laravel 11+.

```php
use Illuminate\Foundation\Configuration\Middleware;
use JeffersonGoncalves\SecurityHeaders\Middleware\SecurityHeaders;

->withMiddleware(function (Middleware $middleware) {
    $middleware->web(prepend: [
        SecurityHeaders::class,
    ]);
})
```

--------------------------------

### Test SecurityHeaders middleware with Pest

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Directly test the SecurityHeaders middleware by passing a Request and a closure that returns a Response. Covers assertions for X-Content-Type-Options, HSTS on secure requests, HSTS omission on insecure requests, null config header omission, and custom CSP directive rendering. Note that Testbench runs in the 'testing' environment, so HSTS is applied for secure requests in tests.

```php
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use JeffersonGoncalves\SecurityHeaders\Middleware\SecurityHeaders;

function runSecurityHeaders(Request $request)
{
    return (new SecurityHeaders)->handle($request, fn () => new Response('OK'));
}

it('stamps nosniff', function () {
    $response = runSecurityHeaders(Request::create('https://example.com'));

    expect($response->headers->get('X-Content-Type-Options'))->toBe('nosniff');
});

it('adds HSTS on a secure non-local request', function () {
    $response = runSecurityHeaders(Request::create('https://example.com'));

    expect($response->headers->get('Strict-Transport-Security'))
        ->toBe('max-age=31536000; includeSubDomains; preload');
});

it('omits HSTS on an insecure request', function () {
    $response = runSecurityHeaders(Request::create('http://example.com'));

    expect($response->headers->has('Strict-Transport-Security'))->toBeFalse();
});

it('omits a header set to null in config', function () {
    config()->set('laravel-security-headers.headers.X-Frame-Options', null);

    $response = runSecurityHeaders(Request::create('https://example.com'));

    expect($response->headers->has('X-Frame-Options'))->toBeFalse();
});

it('renders a custom CSP directive from config', function () {
    config()->set('laravel-security-headers.csp.directives.img-src', "'self' https://cdn.example.com");

    $response = runSecurityHeaders(Request::create('https://example.com'));

    expect($response->headers->get('Content-Security-Policy'))
        ->toContain("img-src 'self' https://cdn.example.com");
});
```

--------------------------------

### Configure Content-Security-Policy directives

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Configure Content-Security-Policy directives. Directives are joined with '; ' in declaration order; arrays are joined with a single space.

```php
'csp' => [
    'enabled' => true,
    'directives' => [
        'default-src' => "'self'",
        'script-src' => ["'self'", "'unsafe-inline'", 'https://www.googletagmanager.com'],
        'img-src' => "'self' data: https:",
        'frame-ancestors' => "'self'",
        'object-src' => "'none'",
        'upgrade-insecure-requests' => null, // valueless
    ],
],
```

--------------------------------

### Attach Middleware via Alias

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Attach the security-headers middleware to a route group using the auto-registered alias.

```php
Route::middleware('security-headers')->group(function () {
    // ...
});
```

--------------------------------

### Legacy Kernel Middleware Group

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Add the middleware to the web group in app/Http/Kernel.php for Laravel 10 style.

```php
protected $middlewareGroups = [
    'web' => [
        \JeffersonGoncalves\SecurityHeaders\Middleware\SecurityHeaders::class,
        // ...
    ],
];
```

--------------------------------

### Opt-in permissive CSP for GTM/gtag/Alpine.js

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Permissive CSP for Google Tag Manager, gtag, and Alpine.js. Requires 'unsafe-inline' and 'unsafe-eval', removing XSS protection; pair with output sanitization for untrusted markup.

```php
'directives' => [
    'default-src' => "'self'",
    'script-src' => "'self' 'unsafe-inline' 'unsafe-eval' https://www.googletagmanager.com https://www.google-analytics.com https://static.cloudflareinsights.com",
    'style-src' => "'self' 'unsafe-inline'",
    'img-src' => "'self' data: https:",
    'font-src' => "'self' data:",
    'connect-src' => "'self' https://www.google-analytics.com https://*.google-analytics.com https://*.analytics.google.com https://www.googletagmanager.com https://cloudflareinsights.com",
    'frame-src' => "'self' https://www.googletagmanager.com",
    'frame-ancestors' => "'self'",
    'base-uri' => "'self'",
    'form-action' => "'self'",
    'object-src' => "'none'",
    'upgrade-insecure-requests' => null,
],
```

--------------------------------

### Use nonces for inline scripts with @cspNonce

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Allow specific inline scripts with a per-request nonce. The middleware substitutes {nonce} with a fresh random value; the Blade @cspNonce directive emits the same value for that request.

```php
'script-src' => "'self' 'nonce-{nonce}'",
```

```blade
<script nonce="@cspNonce">
    // your trusted inline script
</script>
```

--------------------------------

### Configure HSTS header in Laravel

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/README.md

Configuration for the HSTS security header. HSTS is only stamped over real HTTPS and never in excluded environments (default ['local']). The 'preload' option defaults to false and is a near-irreversible commitment if enabled and submitted to hstspreload.org.

```php
'hsts' => [
    'enabled' => true,
    'max-age' => 31536000,
    'include-subdomains' => true,
    'preload' => false,

    // Environments in which HSTS is never stamped (even over HTTPS).
    // Set to [] to stamp HSTS in every environment.
    'exclude_environments' => ['local'],
],
```

--------------------------------

### Add Cross-Origin-Resource-Policy header to config

Source: https://github.com/jeffersongoncalves/laravel-security-headers/blob/master/resources/boost/skills/security-headers-development/SKILL.md

Add a new managed header by inserting its default value into the 'headers' array in config/laravel-security-headers.php. The middleware iterates this map, so no code change is needed; setting the value to null skips the header.

```php
'headers' => [
    // ...
    'Cross-Origin-Resource-Policy' => 'same-origin',
],
```

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