/// <summary>
/// 是否使用验证码
/// </summary>
/// <param name="scenarios">验证码使用场景</param>
/// <param name="isLimitCount">是否限制次数</param>
/// <returns></returns>
public static bool UseCaptcha(VerifyScenarios scenarios = VerifyScenarios.Login,bool isLimitCount = false)
{
CaptchaSetting captchaSetting = CaptchaSetting.Instance();
if (!captchaSetting.EnableCaptcha) return false;
return false;
}
/// <summary>
/// 重置使用验证码前尝试次数
/// </summary>
/// <param name="userName">用户名</param>
public static void ResetLimitTryCount(VerifyScenarios scenarios)
{
string cacheKey = GetCacheKey_LimitTryCount(GetUserName(), scenarios);
int? limitTryCount = cacheService.Get(cacheKey) as int?;
if (limitTryCount.HasValue)
cacheService.Remove(cacheKey);
}
/// <summary>
/// 是否开始使用验证码
/// </summary>
/// <param name="userName">用户名</param>
/// <param name="scenarios">验证码使用场景</param>
/// <returns></returns>
public static bool UseCaptcha(VerifyScenarios scenarios = VerifyScenarios.Post, bool isLimitCount = false)
{
CaptchaSettings verificationCodeSettings = CaptchaSettings.Instance();
if (!verificationCodeSettings.EnableCaptcha)
{
return(false);
}
IUser currentUser = UserContext.CurrentUser;
if (scenarios == VerifyScenarios.Register || currentUser == null && scenarios == VerifyScenarios.Post)
{
return(true);
}
//后台登陆
if (scenarios == VerifyScenarios.Login && currentUser != null)
{
return(true);
}
if (currentUser == null && scenarios == VerifyScenarios.Post && verificationCodeSettings.EnableAnonymousCaptcha)
{
return(true);
}
string userName = GetUserName();
if (scenarios == VerifyScenarios.Login && UserIdToUserNameDictionary.GetUserId(userName) == 0)
{
return(false);
}
string cacheKey = GetCacheKey_LimitTryCount(userName, scenarios);
int? limitTryCount = cacheService.Get(cacheKey) as int?;
if (limitTryCount.HasValue &&
((scenarios == VerifyScenarios.Login && limitTryCount >= verificationCodeSettings.CaptchaLoginCount) ||
(scenarios == VerifyScenarios.Post && limitTryCount >= verificationCodeSettings.CaptchaPostCount)))
{
return(true);
}
if (isLimitCount)
{
if (limitTryCount.HasValue)
{
limitTryCount++;
}
else
{
limitTryCount = 1;
}
cacheService.Set(cacheKey, limitTryCount, CachingExpirationType.SingleObject);
}
return(false);
}
/// <summary>
/// 是否开始使用验证码
/// </summary>
/// <returns></returns>
public static bool UseCaptcha(VerifyScenarios scenarios = VerifyScenarios.Post, bool isLimitCount = false)
{
//验证码配置类获取配置是否启用验证码
var catchaSettings = CaptchaSettings.Instance();
if (!catchaSettings.EnableCaptcha)
{
return(false);
}
int? limitTryCount = null;
User currentUser = UserContext.CurrentUser;
if (scenarios == VerifyScenarios.Register)
{
return(true);
}
if (scenarios == VerifyScenarios.Login && currentUser != null)
{
return(true);
}
string userName = GetUserName(HttpContextCore.Current);
string cacheKey = GetLimitTryCount(userName, scenarios);
limitTryCount = cacheService.Get(cacheKey) as int?;
//登录的时候输错三次密码，就使用验证码
if (limitTryCount.HasValue && ((scenarios == VerifyScenarios.Login && limitTryCount >= catchaSettings.CaptchaLoginCount)))
{
return(true);
}
//是否累计次数
if (isLimitCount)
{
if (limitTryCount.HasValue)
{
limitTryCount++;
}
else
{
limitTryCount = 1;
}
if (limitTryCount == 1)
{
cacheService.Add(cacheKey, limitTryCount, CachingExpirationType.SingleObject);
}
else
{
cacheService.Set(cacheKey, limitTryCount, CachingExpirationType.SingleObject);
}
}
return(false);
}
/// <summary>
/// 重置使用验证码前尝试次数
/// </summary>
/// <param name="userName">用户名</param>
public static void ResetLimitTryCount(VerifyScenarios scenarios)
{
string cacheKey = GetCacheKey_LimitTryCount(GetUserName(), scenarios);
int? limitTryCount = cacheService.Get(cacheKey) as int?;
if (limitTryCount.HasValue)
{
cacheService.Remove(cacheKey);
}
}
/// <summary>
/// 重置累计次数，具体是否使用按上面规则实施
/// </summary>
public static void ResetLimitTryCount(VerifyScenarios scenarios)
{
var httpContext = HttpContextCore.Current;
string cacheKey = GetLimitTryCount(GetUserName(httpContext), scenarios);
int? limitTryCount = cacheService.Get(cacheKey) as int?;
if (limitTryCount.HasValue)
{
cacheService.Remove(cacheKey);
}
}
public static IHtmlContent Captcha <T>(this IHtmlHelper <T> htmlHelper, VerifyScenarios scenarios = VerifyScenarios.Post,
bool showCaptchaImage = false, string templateName = "Captcha")
{
if (!CaptchaUtility.UseCaptcha(scenarios))
{
return(HtmlString.Empty);
}
ICaptchaManager captchaManager = DIContainer.Resolve <ICaptchaManager>();
IHtmlContent captchaText = captchaManager.GenerateCaptcha(htmlHelper, showCaptchaImage);
return(htmlHelper.EditorForModel(templateName, new { CaptchaText = captchaText }));
}
/// <summary>
/// 是否开始使用验证码
/// </summary>
/// <param name="userName">用户名</param>
/// <param name="scenarios">验证码使用场景</param>
/// <returns></returns>
public static bool UseCaptcha(VerifyScenarios scenarios = VerifyScenarios.Post, bool isLimitCount = false)
{
CaptchaSettings verificationCodeSettings = CaptchaSettings.Instance();
if (!verificationCodeSettings.EnableCaptcha)
return false;
IUser currentUser = UserContext.CurrentUser;
if (scenarios == VerifyScenarios.Register || currentUser == null && scenarios == VerifyScenarios.Post)
return true;
//后台登陆
if (scenarios == VerifyScenarios.Login && currentUser != null)
return true;
if (currentUser == null && scenarios == VerifyScenarios.Post && verificationCodeSettings.EnableAnonymousCaptcha)
return true;
string userName = GetUserName();
if (scenarios == VerifyScenarios.Login && UserIdToUserNameDictionary.GetUserId(userName) == 0)
return false;
string cacheKey = GetCacheKey_LimitTryCount(userName, scenarios);
int? limitTryCount = cacheService.Get(cacheKey) as int?;
if (limitTryCount.HasValue
&& ((scenarios == VerifyScenarios.Login && limitTryCount >= verificationCodeSettings.CaptchaLoginCount)
|| (scenarios == VerifyScenarios.Post && limitTryCount >= verificationCodeSettings.CaptchaPostCount)))
return true;
if (isLimitCount)
{
if (limitTryCount.HasValue)
{
limitTryCount++;
}
else
{
limitTryCount = 1;
}
cacheService.Set(cacheKey, limitTryCount, CachingExpirationType.SingleObject);
}
return false;
}
/// <summary>
///尝试次数统计的CacheKey
/// </summary>
private static string GetCacheKey_LimitTryCount(string userName, VerifyScenarios scenarios)
{
return string.Format("LimitTryCount::UserName-{0}:Scenarios-{1}", userName, scenarios);
}
/// <summary>
///尝试次数统计的CacheKey
/// </summary>
private static string GetCacheKey_LimitTryCount(string userName, VerifyScenarios scenarios)
{
return(string.Format("LimitTryCount::UserName-{0}:Scenarios-{1}", userName, scenarios));
}
public CaptchaAttribute(VerifyScenarios _scenarios = VerifyScenarios.Login)
{
scenarios = _scenarios;
}
/// <summary>
/// 带参构造器
/// </summary>
/// <param name="scenarios">验证码使用场景</param>
public CaptchaVerifyAttribute(VerifyScenarios scenarios = VerifyScenarios.Post)
{
this.scenarios = scenarios;
}
/// <summary>
/// 带参构造器
/// </summary>
/// <param name="scenarios">验证码使用场景</param>
public CaptchaVerifyAttribute(VerifyScenarios scenarios = VerifyScenarios.Post)
{
this.scenarios = scenarios;
}
