/*
* Rewrites post hash.
* Checks if post meets rules:
* max message size in utf-8 bytes is 65536,
* replyTo should be valid hash
* returns false if rules violated
*/
public static bool Validate(Post p, bool bypassValidation = false)
{
var message = p.message.FromB64();
var bytes = Encoding.UTF8.GetBytes(message);
if (bytes.Length > 65536)
{
return(false);
}
p.hash = HashCalculator.Calculate(p.replyto + message);
if (p.replyto.Length != 32)
{
return(false);
}
foreach (var ch in p.replyto)
{
if (!((ch >= 'a' && ch <= 'f') || (ch >= '0' && ch <= '9')))
{
return(false);
}
}
var post = p.replyto + message;
if (!captcha.Captcha.PostHasValidPOW(post) && !bypassValidation)
{
return(false);
}
if (!captcha.Captcha.PostHasSolvedCaptcha(post, bypassValidation))
{
return(false);
}
return(true);
}
/*
* r - replyTo hash,
* m - message
* hash is calculated inside this constructor
*/
public Post(string r, string m)
{
replyto = r;
message = m;
hash = HashCalculator.Calculate(r + m.FromB64());
}
