摘要:[筆記]從別台Server抓檔案到loacal端
一般電腦使用者在LAN裡常常用share folder分享一些檔案
在XP的網路芳鄰可以看到其他台電腦所分享的目錄
有權限就可以進入去瀏覽跟抓取
有連過就會記錄(有輸入帳號密碼的也是)
使用command line的"net use"就可以看到有連過那些電腦
重開機就或是delete就可以清掉。
但是當需要程式自動去抓檔回來處理的時候，
遇到需要輸入帳號密碼的時候該怎麼處理？
網路上有人分享四種方法：
C#访问远程主机资源的方法
1.下command line
#region NET USE
public bool Connect(string remoteHost, string userName, string passWord)
{
bool Flag = true;
Process proc = new Process();
proc.StartInfo.FileName = "cmd.exe";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardInput = true;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.RedirectStandardError = true;
proc.StartInfo.CreateNoWindow = true;
try
{
proc.Start();
string command = @"net use \\" + remoteHost + " " + passWord + " " + " /user:" + userName + ">NUL";
proc.StandardInput.WriteLine(command);
command = "exit";
proc.StandardInput.WriteLine(command);
while (proc.HasExited == false)
{
proc.WaitForExit(1000);
}
string errormsg = proc.StandardError.ReadToEnd();
if (errormsg != "")
Flag = false;
proc.StandardError.Close();
}
catch (Exception ex)
{
Flag = false;
throw ex;
}
finally
{
proc.Close();
proc.Dispose();
}
return Flag;
}
public bool DisConnect(string remoteHost)
{
bool Flag = true;
Process proc = new Process();
proc.StartInfo.FileName = "cmd.exe";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardInput = true;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.RedirectStandardError = true;
proc.StartInfo.CreateNoWindow = true;
try
{
proc.Start();
string command = @"net use \\" + remoteHost + " /delete";
proc.StandardInput.WriteLine(command);
command = "exit";
proc.StandardInput.WriteLine(command);
while (proc.HasExited == false)
{
proc.WaitForExit(1000);
}
string errormsg = proc.StandardError.ReadToEnd();
if (errormsg != "")
Flag = false;
proc.StandardError.Close();
}
catch (Exception ex)
{
Flag = false;
throw ex;
}
finally
{
proc.Close();
proc.Dispose();
}
return Flag;
}
public bool FileCopy1(string filepath, string filename, string username, string password ,string desfilepath,string desfilename)
{
try
{
bool bln = false;
bln = Connect(filepath, username, password);
if (filename.Length > 0)
{
File.Copy("\\\\" + filepath + "\\" + filename, desfilepath + "\\" + desfilename, true);
}
else
{
DirectoryInfo source = new DirectoryInfo(filepath);
FileInfo[] finfo = source.GetFiles();
foreach (FileInfo f in finfo)
{
File.Copy(f.FullName, desfilepath + "\\" + desfilename, true);
}
}
bln = DisConnect(filepath);
return bln;
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
2.建立網路磁碟機
#region 網路磁碟機
[DllImport("mpr.dll", EntryPoint = "WNetAddConnection2")]
public static extern uint WNetAddConnection2([In] NETRESOURCE lpNetResource, string lpPassword, string lpUsername, uint dwFlags);
[DllImport("Mpr.dll")]
public static extern uint WNetCancelConnection2(string lpName, uint dwFlags, bool fForce);
[StructLayout(LayoutKind.Sequential)]
public class NETRESOURCE
{
public int dwScope;
public int dwType;
public int dwDisplayType;
public int dwUsage;
public string LocalName;
public string RemoteName;
public string Comment;
public string Provider;
}
// remoteNetworkPath format: @"\\192.168.1.48\sharefolder"
// localDriveName format: @"O:"
public static bool CreateMap(string userName, string password, string remoteNetworkPath, string localDriveName)
{
NETRESOURCE myNetResource = new NETRESOURCE();
myNetResource.dwScope = 2; //2:RESOURCE_GLOBALNET
myNetResource.dwType = 1; //1:RESOURCETYPE_ANY
myNetResource.dwDisplayType = 3; //3:RESOURCEDISPLAYTYPE_GENERIC
myNetResource.dwUsage = 1; //1: RESOURCEUSAGE_CONNECTABLE
myNetResource.LocalName = localDriveName;
myNetResource.RemoteName = remoteNetworkPath;
myNetResource.Provider = null;
uint nret = WNetAddConnection2(myNetResource, password, userName, 1);
if (nret == 0)
return true;
else
return false;
}
// localDriveName format: @"O:"
public static bool DeleteMap(string localDriveName)
{
uint nret = WNetCancelConnection2(localDriveName, 1, true);
if (nret == 0)
return true;
else
return false;
}
public bool FileCopy2(string filepath, string filename, string username, string password, string desfilepath, string desfilename)
{
try
{
bool bln = false;
bln = CreateMap(username, password, @"\\" + filepath, @"O:");
if (bln)
{
File.Copy("O:\\" + filename, desfilepath + "\\" + desfilename,true);
bln = DeleteMap(@"O:");
}
return bln;
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
3.利用WebClient
其實就像在IE上用檔案總管的功能，最終還是跟一般操作一樣
#region WebClinet
public bool FileCopy3(string filepath, string filename, string username, string password, string desfilepath, string desfilename)
{
try
{
bool bln = false;
WebClient client = new WebClient();
NetworkCredential cred = new NetworkCredential(username, password, filepath.Split('\\')[0]);
client.Credentials = cred;
client.DownloadFile("file://" + filepath + "/" + filename, desfilepath + "/" + desfilename);
return bln;
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
4.模擬角色
#region 角色模擬
// logon types
const int LOGON32_LOGON_INTERACTIVE = 2;
const int LOGON32_LOGON_NETWORK = 3;
const int LOGON32_LOGON_NEW_CREDENTIALS = 9;
// logon providers
const int LOGON32_PROVIDER_DEFAULT = 0;
const int LOGON32_PROVIDER_WINNT50 = 3;
const int LOGON32_PROVIDER_WINNT40 = 2;
const int LOGON32_PROVIDER_WINNT35 = 1;
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int LogonUser(String lpszUserName, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int DuplicateToken(IntPtr hToken, int impersonationLevel, ref IntPtr hNewToken);
[DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern bool RevertToSelf();
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern bool CloseHandle(IntPtr handle);
private WindowsImpersonationContext impersonationContext;
public bool impersonateValidUser(String userName, String domain, String password)
{
WindowsIdentity tempWindowsIdentity;
IntPtr token = IntPtr.Zero;
IntPtr tokenDuplicate = IntPtr.Zero;
if (RevertToSelf())
{
// 這里使用LOGON32_LOGON_NEW_CREDENTIALS來訪問遠程資源。
// 如果要（透過模擬用戶獲得權限）實現伺服器程序，訪問本地授權數據庫可
// 以用LOGON32_LOGON_INTERACTIVE
if (LogonUser(userName, domain, password, LOGON32_LOGON_NEW_CREDENTIALS,
LOGON32_PROVIDER_DEFAULT, ref token) != 0)
{
if (DuplicateToken(token, 2, ref tokenDuplicate) != 0)
{
tempWindowsIdentity = new WindowsIdentity(tokenDuplicate);
impersonationContext = tempWindowsIdentity.Impersonate();
if (impersonationContext != null)
{
System.AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
IPrincipal pr = System.Threading.Thread.CurrentPrincipal;
IIdentity id = pr.Identity;
CloseHandle(token);
CloseHandle(tokenDuplicate);
return true;
}
}
}
}
if (token != IntPtr.Zero)
CloseHandle(token);
if (tokenDuplicate != IntPtr.Zero)
CloseHandle(tokenDuplicate);
return false;
}
public void undoImpersonation()
{
impersonationContext.Undo();
}
public bool FileCopy4(string filepath, string filename, string username, string password, string desfilepath, string desfilename)
{
try
{
bool bln = false;
bln = impersonateValidUser(username, filepath.Split('\\')[0], password);
if (bln)
{
File.Copy("\\\\" + filepath + "\\" + filename, desfilepath + "\\" + desfilename, true);
}
if (bln) undoImpersonation();
return bln;
}
catch (Exception ex)
{
throw ex;
}
}
#endregion