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SignedStorageUrlController.php
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SignedStorageUrlController.php
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<?php
namespace Laravel\Vapor\Http\Controllers;
use Aws\S3\S3Client;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\Gate;
use Illuminate\Support\Str;
use InvalidArgumentException;
use Laravel\Vapor\Contracts\SignedStorageUrlController as SignedStorageUrlControllerContract;
class SignedStorageUrlController extends Controller implements SignedStorageUrlControllerContract
{
/**
* Create a new signed URL.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function store(Request $request)
{
$this->ensureEnvironmentVariablesAreAvailable($request);
Gate::authorize('uploadFiles', [
$request->user(),
$bucket = $request->input('bucket') ?: $_ENV['AWS_BUCKET'],
]);
$client = $this->storageClient();
$uuid = (string) Str::uuid();
$signedRequest = $client->createPresignedRequest(
$this->createCommand($request, $client, $bucket, $key = ('tmp/'.$uuid)),
'+5 minutes'
);
$uri = $signedRequest->getUri();
return response()->json([
'uuid' => $uuid,
'bucket' => $bucket,
'key' => $key,
'url' => 'https://'.$uri->getHost().$uri->getPath().'?'.$uri->getQuery(),
'headers' => $this->headers($request, $signedRequest),
], 201);
}
/**
* Create a command for the PUT operation.
*
* @param \Illuminate\Http\Request $request
* @param \Aws\S3\S3Client $client
* @param string $bucket
* @param string $key
* @return \Aws\Command
*/
protected function createCommand(Request $request, S3Client $client, $bucket, $key)
{
return $client->getCommand('putObject', array_filter([
'Bucket' => $bucket,
'Key' => $key,
'ACL' => $request->input('visibility') ?: $this->defaultVisibility(),
'ContentType' => $request->input('content_type') ?: 'application/octet-stream',
'CacheControl' => $request->input('cache_control') ?: null,
'Expires' => $request->input('expires') ?: null,
]));
}
/**
* Get the headers that should be used when making the signed request.
*
* @param \Illuminate\Http\Request $request
* @param \GuzzleHttp\Psr7\Request
* @return array
*/
protected function headers(Request $request, $signedRequest)
{
return array_merge(
$signedRequest->getHeaders(),
[
'Content-Type' => $request->input('content_type') ?: 'application/octet-stream',
]
);
}
/**
* Ensure the required environment variables are available.
*
* @param \Illuminate\Http\Request $request
* @return void
*/
protected function ensureEnvironmentVariablesAreAvailable(Request $request)
{
$missing = array_diff_key(array_flip(array_filter([
$request->input('bucket') ? null : 'AWS_BUCKET',
'AWS_DEFAULT_REGION',
'AWS_ACCESS_KEY_ID',
'AWS_SECRET_ACCESS_KEY',
])), $_ENV);
if (empty($missing)) {
return;
}
throw new InvalidArgumentException(
'Unable to issue signed URL. Missing environment variables: '.implode(', ', array_keys($missing))
);
}
/**
* Get the S3 storage client instance.
*
* @return \Aws\S3\S3Client
*/
protected function storageClient()
{
$config = [
'region' => config('filesystems.disks.s3.region', $_ENV['AWS_DEFAULT_REGION']),
'version' => 'latest',
'signature_version' => 'v4',
'use_path_style_endpoint' => config('filesystems.disks.s3.use_path_style_endpoint', false),
];
if (! isset($_ENV['AWS_LAMBDA_FUNCTION_VERSION'])) {
$config['credentials'] = array_filter([
'key' => $_ENV['AWS_ACCESS_KEY_ID'] ?? null,
'secret' => $_ENV['AWS_SECRET_ACCESS_KEY'] ?? null,
'token' => $_ENV['AWS_SESSION_TOKEN'] ?? null,
]);
if (array_key_exists('AWS_URL', $_ENV) && ! is_null($_ENV['AWS_URL'])) {
$config['url'] = $_ENV['AWS_URL'];
$config['endpoint'] = $_ENV['AWS_URL'];
}
}
return S3Client::factory($config);
}
/**
* Get the default visibility for uploads.
*
* @return string
*/
protected function defaultVisibility()
{
return 'private';
}
}