24 lines
862 B
TypeScript
24 lines
862 B
TypeScript
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const stripPort = (host: string): string => {
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if (host.startsWith('[')) return host;
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return host.split(':')[0].toLowerCase().replace(/\.$/, '');
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};
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const isValidBucketLabel = (bucket: string): boolean =>
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/^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$/.test(bucket) &&
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!bucket.includes('..') &&
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!bucket.includes('.-') &&
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!bucket.includes('-.');
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export const extractS3BucketFromHost = (host: string, domains: string[]): string | null => {
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const normalizedHost = stripPort(host);
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for (const domain of domains) {
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const normalizedDomain = stripPort(domain);
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if (!normalizedDomain || normalizedHost === normalizedDomain) continue;
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if (!normalizedHost.endsWith(`.${normalizedDomain}`)) continue;
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const bucket = normalizedHost.slice(0, -(normalizedDomain.length + 1));
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return isValidBucketLabel(bucket) ? bucket : null;
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}
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return null;
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};
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