public async Task <bool> IsCaptchaValid()
{
try
{
var response = await js.InvokeAsync <string>("GoogleCaptcha.GetState");
if (!string.IsNullOrWhiteSpace(response))
{
var captchaValidtor = new GReCaptchaValidator()
{
SecretKey = captchaSettings.ReCaptchaPrivateKey,
RemoteIp = httpContextAccessor.HttpContext.Connection.RemoteIpAddress?.ToString(),
Response = response
};
var captchaResponse = captchaValidtor.Validate();
return(captchaResponse.IsValid);
}
else
{
return(false);
}
}
catch { return(false); }
}
/// <summary>
/// Validate CAPTCHA
/// </summary>
/// <param name="context">A context for action filters</param>
/// <returns>True if CAPTCHA is valid; otherwise false</returns>
protected bool ValidateCaptcha(ActionExecutingContext context)
{
var isValid = false;
//get form values
var captchaChallengeValue = context.HttpContext.Request.Form[CHALLENGE_FIELD_KEY];
var captchaResponseValue = context.HttpContext.Request.Form[RESPONSE_FIELD_KEY];
var gCaptchaResponseValue = context.HttpContext.Request.Form[G_RESPONSE_FIELD_KEY];
if ((!StringValues.IsNullOrEmpty(captchaChallengeValue) && !StringValues.IsNullOrEmpty(captchaResponseValue)) || !StringValues.IsNullOrEmpty(gCaptchaResponseValue))
{
//create CAPTCHA validator
var captchaValidtor = new GReCaptchaValidator(_captchaSettings.ReCaptchaVersion)
{
SecretKey = _captchaSettings.ReCaptchaPrivateKey,
RemoteIp = context.HttpContext.Connection.RemoteIpAddress?.ToString(),
Response = !StringValues.IsNullOrEmpty(captchaResponseValue) ? captchaResponseValue : gCaptchaResponseValue,
Challenge = captchaChallengeValue
};
//validate request
var recaptchaResponse = captchaValidtor.Validate();
isValid = recaptchaResponse.IsValid;
}
return(isValid);
}
/// <summary>
/// Validate CAPTCHA
/// </summary>
/// <param name="context">A context for action filters</param>
/// <returns>True if CAPTCHA is valid; otherwise false</returns>
protected async Task <bool> ValidateCaptcha(ActionExecutingContext context)
{
var isValid = false;
//get form values
var form = await context.HttpContext.Request.ReadFormAsync();
var captchaChallengeValue = form[CHALLENGE_FIELD_KEY];
var captchaResponseValue = form[RESPONSE_FIELD_KEY];
var gCaptchaResponseValue = string.Empty;
foreach (var item in form.Keys)
{
if (item.Contains(G_RESPONSE_FIELD_KEY_V3))
{
gCaptchaResponseValue = form[item];
}
}
if (string.IsNullOrEmpty(gCaptchaResponseValue))
{
gCaptchaResponseValue = form[G_RESPONSE_FIELD_KEY_V2];
}
if ((!StringValues.IsNullOrEmpty(captchaChallengeValue) && !StringValues.IsNullOrEmpty(captchaResponseValue)) || !string.IsNullOrEmpty(gCaptchaResponseValue))
{
//create CAPTCHA validator
var captchaValidtor = new GReCaptchaValidator(_captchaSettings.ReCaptchaVersion)
{
SecretKey = _captchaSettings.ReCaptchaPrivateKey,
RemoteIp = context.HttpContext.Connection.RemoteIpAddress?.ToString(),
Response = !StringValues.IsNullOrEmpty(captchaResponseValue) ? captchaResponseValue.ToString() : gCaptchaResponseValue,
Challenge = captchaChallengeValue
};
//validate request
var recaptchaResponse = await captchaValidtor.Validate();
isValid = recaptchaResponse.IsValid;
if (!isValid)
{
foreach (var error in recaptchaResponse.ErrorCodes)
{
context.ModelState.AddModelError("", error);
}
}
}
return(isValid);
}
