捕捉与C＃NSLOOKUP壳输出
https://stackoverflow.com/questions/353601
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我有一个命令行过程中，我想在C＃自动化和捕获。
在命令行，I型：
nslookup
这将启动一个外壳，其给我一个>提示。在提示时，我然后键入：
ls -a mydomain.local
此从我的主DNS服务器和它们所连接到的物理机器返回本地的CNAME的列表。
我想这样做是自动从C＃这个过程。如果这是一个简单的命令，我只想用Process.StartInfo.RedirectStandardOutput =真实的，但第二步骤的要求是跳闸我。
解决方案
ProcessStartInfo si = new ProcessStartInfo("nslookup");
si.RedirectStandardInput = true;
si.RedirectStandardOutput = true;
Process nslookup = new Process(si);
nslookup.Start();
nslookup.StandardInput.WriteLine("ls -a mydomain.local");
nslookup.StandardInput.Flush();
// use nslookup.StandardOutput stream to read the result.
其他提示
你问不了的事，但我曾经写过一个应用程序，做你在做什么。我最终转移到使用.NET库做DNS查找，这竟然是快了很多。
我敢肯定，我用从CodeProject上网站这个库 。
我知道这是一个古老的一个，但还是喜欢做出贡献。 我用从“主机名NSLOOKUP服务器”输出壳，以获得从IPv4的在我们的域中的计算机名地址并去掉像DNS服务器/ IPv6地址的任何其它信息..
这是有点很快完成，但它的工作原理，还添加有故障转移，如果壳失败，你会使用内置的NSLOOKUP方法从C＃。
这是相当长的，但它给我的可能性读取来自壳的IPv4，而无需使用外部库或不使用内置的NSLOOKUP功能它允许选择DNS服务器。
如果你想知道，如果在中间回路，可能有更优雅的解决方案，但对于我个人用的，这个工作得非常好，在我们的领域大多数主机返回2 IPv6和2 IPv4的，因此，它测试了到4倍。
希望这可以帮助..
private void button1_Click(object sender, EventArgs e)
{
IPAddress[] ips = NsLookup(computername, dnsserver);
txtResult.Text = string.Empty;
if (ips != null)
{
txtResult.Text = ips[0].ToString();
txtResult.Text += Environment.NewLine;
if (ips[1] != null)
{
txtResult.Text += ips[1].ToString();
}
else
{
}
}
else
{
txtResult.Text = "No IP found";
}
}
public IPAddress[] NsLookup(string computername, string domaincontroller)
{
IPAddress[] ips = new IPAddress[2];
try
{
// Creating streamreaders to read the output and the errors
StreamReader outputReader = null;
StreamReader errorReader = null;
string nslookup = @"C:\Windows\System32\Nslookup.exe";
try
{
// Setting process startupinfo
ProcessStartInfo processStartInfo = new ProcessStartInfo(nslookup, computername + " " + domaincontroller);
processStartInfo.ErrorDialog = false;
processStartInfo.UseShellExecute = false;
processStartInfo.RedirectStandardError = true;
processStartInfo.RedirectStandardInput = true;
processStartInfo.RedirectStandardOutput = true;
processStartInfo.WindowStyle = ProcessWindowStyle.Minimized;
// Starting Process
Process process = new Process();
process.StartInfo = processStartInfo;
bool processStarted = process.Start();
if (processStarted)
{
// Catching the output streams
outputReader = process.StandardOutput;
errorReader = process.StandardError;
string errorresult = errorReader.ReadLine();
errorReader.Close();
if (errorresult != null)
{
// Failure got thrown in NsLookup Streamreading, try build-in Method
try
{
ips = Dns.GetHostAddresses(computername);
return ips;
}
catch
{
return null;
}
}
else
{
// Clearing out all the values before the addresses.
outputReader.ReadLine();
outputReader.ReadLine();
outputReader.ReadLine();
outputReader.ReadLine();
// Reading and Verifying the first outputline (the address is found after "Addresses: ") - 2 part of the array is taken (after second space)
string outputline = outputReader.ReadLine();
string[] outputlineaftersplit = outputline.Split(' ');
string ipfortesting = outputlineaftersplit[2].Trim();
if (verifyIP(ipfortesting) != null) // First entry is ipv4
{
ips[0] = verifyIP(ipfortesting);
outputline = outputReader.ReadLine();
ipfortesting = outputline.Trim();
if (verifyIP(ipfortesting) != null) // First and second entry are ipv4
{
ips[1] = verifyIP(ipfortesting);
return ips;
}
else
{
return ips;
}
}
else
{
outputline = outputReader.ReadLine();
ipfortesting = outputline.Trim();
if (verifyIP(ipfortesting) != null)
{
ips[0] = verifyIP(ipfortesting);
outputline = outputReader.ReadLine();
ipfortesting = outputline.Trim();
if (verifyIP(ipfortesting) != null)
{
ips[0] = verifyIP(ipfortesting);
outputline = outputReader.ReadLine();
ipfortesting = outputline.Trim();
if (verifyIP(ipfortesting) != null)
{
ips[1] = verifyIP(ipfortesting);
return ips;
}
else
{
return ips;
}
}
else
{
return ips;
}
}
else
{
outputline = outputReader.ReadLine();
ipfortesting = outputline.Trim();
if (verifyIP(ipfortesting) != null)
{
ips[0] = verifyIP(ipfortesting);
outputline = outputReader.ReadToEnd();
ipfortesting = outputline.Trim();
if (verifyIP(ipfortesting) != null)
{
ips[1] = verifyIP(ipfortesting);
return ips;
}
else
{
return ips;
}
}
else
{
ips = null;
return ips;
}
}
}
}
}
else
{
// Failure got thrown in NsLookup Streamreading, try build-in Method
try
{
ips = Dns.GetHostAddresses(computername);
return ips;
}
catch
{
return null;
}
}
}
catch
{
System.Windows.Forms.MessageBox.Show("ERROR 1");
// Failure got thrown in NsLookup Streamreading, try build-in Method
try
{
ips = Dns.GetHostAddresses(computername);
return ips;
}
catch
{
return null;
}
}
finally
{
if (outputReader != null)
{
outputReader.Close();
}
}
}
catch
{
System.Windows.Forms.MessageBox.Show("ERROR 2");
// Failure got thrown in NsLookup Streamreading, try build-in Method
try
{
ips = Dns.GetHostAddresses(computername);
return ips;
}
catch
{
return null;
}
}
}
public IPAddress verifyIP(string ipfromreader)
{
IPAddress ipresult = null;
bool isIP = IPAddress.TryParse(ipfromreader, out ipresult);
if (isIP && (ipresult.AddressFamily != AddressFamily.InterNetworkV6))
{
return ipresult;
}
else
{
return null;
}
}
}
}
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