INNER CODE UNIT · TypeScript

signingSignatureAgent

cloudflare/web-bot-auth · packages/web-bot-auth/src/index.ts:184

function signingSignatureAgent(
  request: Request | RequestDescriptor,
  key: string
): SignatureAgentSelection | undefined {
  const header = requestHeader(request, SIGNATURE_AGENT_HEADER);
  if (header === undefined) return undefined;
  const parsed = parseSignatureAgentHeader(header);
  if (parsed.kind === "legacy") {
    const entry = parsed.entries[0];
    if (entry === undefined) return policyError("Signature-Agent is empty");
    return Object.freeze({ component: SIGNATURE_AGENT_HEADER });
  }
  const entry = parsed.entries.find((candidate) => candidate.label === key);
  if (entry === undefined) {
    return policyError(`Signature-Agent has no member ${key}`);
  }
  return Object.freeze({
    component: component(SIGNATURE_AGENT_HEADER, { key }),

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