在BlogEngine.net中使用reCaptcha

Question

我刚刚在我的网站上安装了reCaptcha，并将控件放在了我的评论帖子上，到目前为止一切都很好。

现在，为了验证reCaptcha，它说只需执行Page.IsValid。

然而，BlogEngine使用Ajax和一些JS来发布它的addComment函数，如果我在那里测试，我只会在状态栏中的页面上得到错误。

这里是bloengine post函数-

/// <summary>
/// Processes a callback event that targets a control.
/// </summary>
/// <param name="eventArgument">A string that represents an event argument to pass to the event handler.</param>
public void RaiseCallbackEvent(string eventArgument)
{
    if (!BlogSettings.Instance.IsCommentsEnabled)
        return;

    string[] args = eventArgument.Split(new string[] { "-|-" }, StringSplitOptions.None);
    string author = args[0];
    string email = args[1];
    string website = args[2];
    string country = args[3];
    string content = args[4];
    bool notify = bool.Parse(args[5]);
    bool isPreview = bool.Parse(args[6]);
    string sentCaptcha = args[7];
    //If there is no "reply to" comment, args[8] is empty
    Guid replyToCommentID = String.IsNullOrEmpty(args[8]) ? Guid.Empty : new Guid(args[8]);

    string storedCaptcha = hfCaptcha.Value;

    Comment comment = new Comment();
    comment.Id = Guid.NewGuid();
    comment.ParentId = replyToCommentID;
    comment.Author = Server.HtmlEncode(author);
    comment.Email = email;
    comment.Content = Server.HtmlEncode(content);
    comment.IP = Request.UserHostAddress;
    comment.Country = country;
    comment.DateCreated = DateTime.Now;
    comment.Parent = Post;
    comment.IsApproved = !BlogSettings.Instance.EnableCommentsModeration;

    if (Page.User.Identity.IsAuthenticated)
        comment.IsApproved = true;

    if (website.Trim().Length > 0)
    {
        if (!website.ToLowerInvariant().Contains("://"))
            website = "http://" + website;

        Uri url;
        if (Uri.TryCreate(website, UriKind.Absolute, out url))
            comment.Website = url;
    }

    if (notify && !Post.NotificationEmails.Contains(email))
        Post.NotificationEmails.Add(email);
    else if (!notify && Post.NotificationEmails.Contains(email))
        Post.NotificationEmails.Remove(email);

    if (!isPreview)
    {
        Post.AddComment(comment);
        SetCookie(author, email, website, country);
    }

    string path = Utils.RelativeWebRoot + "themes/" + BlogSettings.Instance.Theme + "/CommentView.ascx";

    CommentViewBase control = (CommentViewBase)LoadControl(path);
    control.Comment = comment;
    control.Post = Post;

    using (StringWriter sw = new StringWriter())
    {
        control.RenderControl(new HtmlTextWriter(sw));
        _Callback = sw.ToString();
    }
}

我试着只返回if(!Page.IsValid)，但是从来没有成功过。

Answer 1

现在1.6.1已经内置了对reCaptcha的支持，请参阅Enable ReCaptcha

Answer 2

reCaptcha的默认API不适用于AJAX驱动的网页，尤其是当您替换reCaptcha所在的内容时。这里的问题是默认的reCaptcha应用编程接口。只需切换到AJAX API，它也提供here

Answer 3

var captchaChallengeValue = filterContext.HttpContext.Request.Form["recaptcha_challenge_field"];
var captchaResponseValue = filterContext.HttpContext.Request.Form["recaptcha_response_field"];
var captchaValidator = new Recaptcha.RecaptchaValidator
{
    PrivateKey = "private key here",
    RemoteIP = filterContext.HttpContext.Request.UserHostAddress,
    Challenge = captchaChallengeValue,
    Response = captchaResponseValue
};

var recaptchaResponse = captchaValidtor.Validate();

这就是我在另一个网站上做的事情。我获得了输入的内容和响应，然后创建了一个新的captchaValidator，它有一个检查响应是否有效的方法。然后使用它作为if的布尔值。

我使用的是ASP.Net MVC。但是，我会假设这个想法是相似的。

希望这能有所帮助。