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* feat(cloudfront): add requireSignedAccess to enforce strict signed access Introduces cloudfront.requireSignedAccess (default false). When enabled, initializeCloudFront requires both CLOUDFRONT_KEY_PAIR_ID and CLOUDFRONT_PRIVATE_KEY, rejects the unimplemented imageSigning="url" mode, and initializeFileStorage throws to block startup on any CloudFront init failure. OSS path is unchanged: missing keys still log-and-continue when requireSignedAccess is false. Adds low-noise startup and cookie-issuance logs without leaking signed URLs, policies, signatures, private keys, or cookie values. * fix(cloudfront): reject requireSignedAccess unless imageSigning is "cookies" Previously requireSignedAccess=true was accepted with imageSigning="none" or "url", but setCloudFrontCookies() only runs for "cookies" — leaving strict mode toothless: CloudFront stayed publicly accessible, or image delivery broke on a distribution that actually requires signed access. Adds a Zod refinement plus a runtime guard in initializeCloudFront so the only currently-functional strict configuration is imageSigning "cookies". Signed URL mode can lift this restriction once implemented. * fix(cloudfront): resolve strict access type checks * chore(cloudfront): reduce strict startup log noise --------- Co-authored-by: Danny Avila <danny@librechat.ai> |
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