34 lines
1.2 KiB
TypeScript
34 lines
1.2 KiB
TypeScript
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import { config } from '../../env';
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import { isS3Request } from '../../interfaces/s3/auth';
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import { extractS3BucketFromHost } from '../../interfaces/s3/virtual-host';
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/**
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* Extracts the S3 bucket name from the request host
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* if it matches a virtual-hosted-style domain.
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*
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* @param req - The incoming HTTP request.
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* @returns The bucket name if found, or null.
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*/
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export const getS3RouteBucket = (req: Request): string | null => {
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const host = req.headers.get('host') || '';
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return extractS3BucketFromHost(host, config.s3VhostDomains);
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};
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/**
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* Determines whether the incoming request appears to be an S3 API request
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* based on host headers, authorization headers, or query parameters.
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*
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* @param req - The incoming HTTP request.
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* @param headers - A record of parsed request headers (optional — derived from req if omitted).
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* @returns True if the request should be handled by the S3 handler.
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*/
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export const shouldHandleS3 = (req: Request, headers?: Record<string, string>): boolean => {
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const resolvedHeaders = headers ?? Object.fromEntries(req.headers);
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const url = new URL(req.url);
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return Boolean(
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getS3RouteBucket(req) ||
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isS3Request(resolvedHeaders) ||
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url.searchParams.has('X-Amz-Signature'),
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);
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};
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