private Url DecodeN(string body, Url url)
{
if (!url.QueryParams.TryGetFirst("n", out var n))
{
return(url);
}
// Option 1
var(code, argumentName) = DecodeUtils.ExtractNCode(body);
var nDecoded = Evaluate(code, argumentName, n);
return(url.SetQueryParam("n", nDecoded));
}
private Url DecipherSignature(string body, Url url)
{
if (!url.QueryParams.TryGetFirst("s", out var s))
{
return(url);
}
var signatureParameter = url.QueryParams.FirstOrDefault("sp") as string ?? "signature";
// Option 1
var(code, argumentName) = DecodeUtils.ExtractDecipher(body);
var signatureValue = Evaluate(code, argumentName, s);
return(url.SetQueryParam(signatureParameter, signatureValue));
}