Function IsValidCacheKey

cmd/cache-proxy/cache.go:27–29

IsValidCacheKey returns true if key is a 64-char lowercase hex string.

(key string)

// Cache keys arrive from untrusted peers via HTTP query params; anything
// that isn't a clean hex digest is rejected to prevent filepath traversal
// when composing the on-disk path.
var validCacheKey = regexp.MustCompile(`^[0-9a-f]{64}$`)

// IsValidCacheKey returns true if key is a 64-char lowercase hex string.
func IsValidCacheKey(key string) bool {
	return validCacheKey.MatchString(key)