Viewing file:  CorsServiceProvider.php (3.69 KB) -rw-r--r--
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<?php
namespace Fruitcake\Cors;
use Asm89\Stack\CorsService;
use Illuminate\Foundation\Application as LaravelApplication;
use Illuminate\Support\ServiceProvider as BaseServiceProvider;
use Laravel\Lumen\Application as LumenApplication;
use Illuminate\Foundation\Http\Events\RequestHandled;
class CorsServiceProvider extends BaseServiceProvider
{
/**
* Register the service provider.
*
* @return void
*/
public function register()
{
$this->mergeConfigFrom($this->configPath(), 'cors');
$this->app->singleton(CorsService::class, function ($app) {
return new CorsService($this->corsOptions(), $app);
});
}
/**
* Register the config for publishing
*
*/
public function boot()
{
if ($this->app instanceof LaravelApplication && $this->app->runningInConsole()) {
$this->publishes([$this->configPath() => config_path('cors.php')], 'cors');
} elseif ($this->app instanceof LumenApplication) {
$this->app->configure('cors');
}
// Add the headers on the Request Handled event as fallback in case of exceptions
if (class_exists(RequestHandled::class) && $this->app->bound('events')) {
$this->app->make('events')->listen(RequestHandled::class, function (RequestHandled $event) {
$this->app->make(HandleCors::class)->onRequestHandled($event);
});
}
}
/**
* Set the config path
*
* @return string
*/
protected function configPath()
{
return __DIR__ . '/../config/cors.php';
}
/**
* Get options for CorsService
*
* @return array
*/
protected function corsOptions()
{
$config = $this->app['config']->get('cors');
if ($config['exposed_headers'] && !is_array($config['exposed_headers'])) {
throw new \RuntimeException('CORS config `exposed_headers` should be `false` or an array');
}
foreach (['allowed_origins', 'allowed_origins_patterns', 'allowed_headers', 'allowed_methods'] as $key) {
if (!is_array($config[$key])) {
throw new \RuntimeException('CORS config `' . $key . '` should be an array');
}
}
// Convert case to supported options
$options = [
'supportsCredentials' => $config['supports_credentials'],
'allowedOrigins' => $config['allowed_origins'],
'allowedOriginsPatterns' => $config['allowed_origins_patterns'],
'allowedHeaders' => $config['allowed_headers'],
'allowedMethods' => $config['allowed_methods'],
'exposedHeaders' => $config['exposed_headers'],
'maxAge' => $config['max_age'],
];
// Transform wildcard pattern
foreach ($options['allowedOrigins'] as $origin) {
if (strpos($origin, '*') !== false) {
$options['allowedOriginsPatterns'][] = $this->convertWildcardToPattern($origin);
}
}
return $options;
}
/**
* Create a pattern for a wildcard, based on Str::is() from Laravel
*
* @see https://github.com/laravel/framework/blob/5.5/src/Illuminate/Support/Str.php
* @param string $pattern
* @return string
*/
protected function convertWildcardToPattern($pattern)
{
$pattern = preg_quote($pattern, '#');
// Asterisks are translated into zero-or-more regular expression wildcards
// to make it convenient to check if the strings starts with the given
// pattern such as "library/*", making any string check convenient.
$pattern = str_replace('\*', '.*', $pattern);
return '#^' . $pattern . '\z#u';
}
}
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