Question

我遇到与此问题相同的问题：How to disable "Security Alert" window in Webbrowser control

我喜欢这个答案，但是我要在哪里放置ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate);？

在我使用以下代码提交学校网络的登录页面后，我收到“无效认证”消息：

HtmlElementCollection ellements = webBrowser.Document.GetElementsByTagName("input");
foreach (HtmlElement ellement in ellements)
{
    if (ellement.OuterHtml == "<INPUT onclick=\"this.value = 'Submitted'\" value=\" Login \" type=submit>")
    {
        ellement.InvokeMember("click");
        this.DialogResult = DialogResult.OK;
        break;
    }
}

Answer 1

在显示网络浏览器控件/提交页面之前，您应该将以下内容放在任何点：

ServicePointManager.ServerCertificateValidationCallback += 
    new RemoteCertificateValidationCallback((sender, certificate, chain, policyErrors) => { return true; });

（这与链接问题中的示例答案完全相同，但回调方法是匿名的，因此它更紧凑）。

Answer 2

试试这个：

private static bool ValidateRemoteCertificate(
  object sender,
  X509Certificate certificate,
  X509Chain chain,
  SslPolicyErrors policyErrors)
{
    // Logic to determine the validity of the certificate
     // return boolean
}


// allows for validation of SSL conversations
            ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(
                ValidateRemoteCertificate
            );

HtmlElementCollection ellements = webBrowser.Document.GetElementsByTagName("input");
foreach (HtmlElement ellement in ellements)
{
    if (ellement.OuterHtml == "<INPUT onclick=\"this.value = 'Submitted'\" value=\" Login \" type=submit>")
    {
        ellement.InvokeMember("click");
        this.DialogResult = DialogResult.OK;
        break;
    }
}

Answer 3

对于希望在Powershell中执行此操作的人，请使用以下命令。重要的是，对于处理程序，不要执行{$ true} ，因为经常调用它可能会导致运行空间不足错误。

$code = @"
public class SSLHandler
{
    public static System.Net.Security.RemoteCertificateValidationCallback GetSSLHandler()
    {

        return new System.Net.Security.RemoteCertificateValidationCallback((sender, certificate, chain, policyErrors) => { return true; });
    }

}
"@

Add-Type -TypeDefinition $code
#disable checks
[System.Net.ServicePointManager]::ServerCertificateValidationCallback = [SSLHandler]::GetSSLHandler()
#do the request
try
{
    invoke-WebRequest -Uri myurl -UseBasicParsing
} catch {
    # do something
} finally {
   #enable checks again
   [System.Net.ServicePointManager]::ServerCertificateValidationCallback = $null
}

如果仍然有一些服务器在运行Powershell v2，则不能使用匿名功能，此版本将起作用：

$code = @"
public class SSLHandler
{
    private static bool Callback(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate, System.Security.Cryptography.X509Certificates.X509Chain chain, System.Net.Security.SslPolicyErrors sslPolicyErrors)
    {
        return true;
    }

    public static System.Net.Security.RemoteCertificateValidationCallback GetSSLHandler()
    {

        return new System.Net.Security.RemoteCertificateValidationCallback(Callback);
    }

}
"@

在哪里放置RemoteCertificateValidationCallback？

3 个答案: