public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
CaptchaViewModel captchaViewModel = (CaptchaViewModel)controllerContext.HttpContext.Session[sessionKey];
if (captchaViewModel == null)
{
captchaViewModel = new CaptchaViewModel();
controllerContext.HttpContext.Session[sessionKey] = captchaViewModel;
}
return(captchaViewModel);
}
public static CaptchaViewModel GenerateCaptcha(int charCount = 5)
{
CaptchaViewModel captchaViewModel = new CaptchaViewModel();
var captchaCode = GenerateCaptchaCode(charCount);
var captchaImage = GenerateCaptchaImage(captchaCode);
captchaViewModel.CaptchaId = Guid.NewGuid().ToString();
captchaViewModel.CaptchaCode = captchaCode;
captchaViewModel.CaptchaImage = String.Format("data:image/png;base64,{0}", Convert.ToBase64String(BitmapToBytes(captchaImage)));
captchaViewModel.CaptchaToken = GetEncryptString($"{captchaViewModel.CaptchaId}_{captchaViewModel.CaptchaCode}");
return(captchaViewModel);
}
public async Task Initialize()
{
await Application.Current.Dispatcher.InvokeAsync(() =>
{
window = new CaptchaWindow
{
Owner = Application.Current.MainWindow
};
window.Closing += WindowClosing;
viewModel = new CaptchaViewModel();
viewModel.CaptchaEntered += CaptchaEntered;
window.DataContext = viewModel;
});
}
public ActionResult Index(CaptchaViewModel model)
{
string msg = null;
if (!ModelState.IsValid)
{
msg = string.Join(";", ModelState.Values.SelectMany(e => e.Errors).Select(gh => gh.ErrorMessage));
}
else
{
msg = "驗證成功!";
//重啟Captcha
MvcCaptcha.ResetCaptcha("ExampleCaptcha");
}
TempData["msg"] = msg;
return(RedirectToAction(nameof(this.Index)));
}
public ActionResult GenerateCaptcha()
{
System.Drawing.FontFamily family = new System.Drawing.FontFamily("Arial");
CaptchaImage img = new CaptchaImage(150, 50, family);
string text = img.CreateRandomText(4) + " " + img.CreateRandomText(3);
img.SetText(text);
img.GenerateImage();
img.Image.Save(Server.MapPath("~") +
"\\" +
ConfigurationManager.AppSettings["CaptchaFolder"] + "\\" +
this.Session.SessionID.ToString() + ".png", System.Drawing.Imaging.ImageFormat.Png);
Session["Captcha"] = new CaptchaViewModel
{
CaptchaText = text
};
return(Json(this.Session.SessionID.ToString() + ".png?t=" + DateTime.Now.Ticks, JsonRequestBehavior.AllowGet));
}
/// <summary>
/// html view model
/// </summary>
/// <param name="captcha"></param>
/// <param name="imagePath">Get pictures using HTTP</param>
/// <param name="format">Get pictures using Base64</param>
/// <returns></returns>
public static CaptchaViewModel ToViewModel(this CaptchaImage captcha, string validatePath, Action <CaptchaViewModel> imagePath = null, bool hasBackground = false, IImageFormat format = null)
{
if (captcha == null)
{
return(new CaptchaViewModel());
}
var model = new CaptchaViewModel();
model.Extension = captcha.Extension;
model.Index = JsonSerializer.Serialize(captcha.Index);
model.Change = JsonSerializer.Serialize(captcha.Change);
model.Width = captcha.Backgorund.Width;
model.Height = captcha.Backgorund.Height;
model.Row = captcha.Row;
model.Col = captcha.Col;
model.X = captcha.Points.Count;
model.validate = validatePath;
model.Tips = captcha.Tips;
if (imagePath != null)
{
model.IsAction = true;
imagePath(model);
}
else
{
model.IsAction = false;
if (format == null)
{
format = JpegFormat.Instance;
}
model.Gap = captcha.Gap?.ToBase64String(PngFormat.Instance);
model.BgGap = captcha.GapBackground?.ToBase64String(model.Height != captcha.GapBackground.Height?PngFormat.Instance:format);
if (hasBackground)
{
model.Full = captcha.Backgorund?.ToBase64String(format);
}
}
model.Type = captcha.Type;
model.Tk = captcha.Token;
model.Name = captcha.Name;
return(model);
}
public ActionResult Register(RegisterModel model, CaptchaViewModel captchaViewModel)
{
if (model.CaptchaInput.Trim().ToLower() != captchaViewModel.CaptchaText.Trim().ToLower())
{
ModelState.AddModelError("Wrong captcha, please try again", new MissingFieldException());
}
if (ModelState.IsValid)
{
// Attempt to register the user
try
{
WebSecurity.CreateUserAndAccount(
model.UserName,
model.Password,
new
{
FullName = model.FullName,
EmailAddress = model.EmailAddress,
Phone = model.Phone,
Activated = false
},
false);
string activationCode = _encryptionEngine.DESEncrypt(
model.UserName + separator.ToString() + model.EmailAddress);
_smtpEmail.SendActivationEmail(
activationCode,
model.FullName,
model.EmailAddress);
ViewBag.Message = "An activation email sent to your email address";
return(View("Message"));
}
catch (MembershipCreateUserException e)
{
ModelState.AddModelError("", ErrorCodeToString(e.StatusCode));
}
}
// If we got this far, something failed, redisplay form
return(View(model));
}
public CaptchaViewModel GetOrGenerateCaptcha(Guid challengeGuid)
{
var captcha = _services.WorkContext.HttpContext.Session[CaptchaServiceConstants.SESSION_KEY_PREFIX + challengeGuid] as CaptchaViewModel;
if (captcha == null)
{
var settings = GetSettings();
captcha = new CaptchaViewModel()
{
Guid = challengeGuid,
Src = _urlHelper.Action("GetCaptchaImage", "CaptchaImage",
new { area = "MainBit.Captcha", challengeGuid, height = settings.ImageHeight, width = settings.ImageWidth }),
Width = settings.ImageWidth,
Height = settings.ImageHeight,
Value = MakeRandomSolution(settings)
};
_services.WorkContext.HttpContext.Session[CaptchaServiceConstants.SESSION_KEY_PREFIX + challengeGuid] = captcha;
}
return(captcha);
}
public ActionResult Setting(CaptchaViewModel model)
{
//重啟Captcha
MvcCaptcha.ResetCaptcha("ExampleCaptcha");
return(RedirectToAction(nameof(this.JQueryValidation)));
}
private void CaptchaView_OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
_viewModel = (CaptchaViewModel)e.NewValue;
_viewModel.PropertyChanged += VmOnPropertyChanged;
}
public CaptChaControl()
{
InitializeComponent();
this.viewModel = new CaptchaViewModel();
this.Loaded += (s, e) => { DataContext = this.viewModel; };
}
