使用c#中的身份验证复制文件
本文关键字：复制 文件 身份验证 使用 | 更新日期: 2023-09-27 18:24:17
我正试图将文件从本地驱动器复制到服务器上的一个文件夹中。服务器上文件夹的名称为"DBFiles"。除了用户名"user"和密码"password1！"之外，没有人可以访问此项
在处理文件之前，如果不存在，它也会创建目录。
有人能在创建目录"Test"时帮助获得访问权限，然后复制文件吗。
if (!Directory.Exists(@"''server-a'copiedfiles'"))
Directory.CreateDirectory(@"''server-a'DBFiles'"+Test);
File.Copy("C:'Temp'abc.txt", @"''server-a'DBFiles'");
这是c#中的原始代码。
NetworkShare.DisconnectFromShare(@"''server-a'DBFiles", true); //Disconnect in case we are currently connected with our credentials;
NetworkShare.ConnectToShare(@"''server-a'DBFiles", "user1", "password1!"); //Connect with the new credentials
File.Copy(@"c:'temp'T1.txt", @"''server-a'DBFiles'T1.txt");
NetworkShare.DisconnectFromShare(@"''server-a'DBFiles", false); //Disconnect from the server.
其给出的错误为访问被拒绝。
另一个选项是，您可以通过编程访问windows的NET USE api并对共享进行身份验证，就像您在资源管理器中访问它并键入credentials一样。
public static class NetworkShare
{
/// <summary>
/// Connects to the remote share
/// </summary>
/// <returns>Null if successful, otherwise error message.</returns>
public static string ConnectToShare(string uri, string username, string password)
{
//Create netresource and point it at the share
NETRESOURCE nr = new NETRESOURCE();
nr.dwType = RESOURCETYPE_DISK;
nr.lpRemoteName = uri;
//Create the share
int ret = WNetUseConnection(IntPtr.Zero, nr, password, username, 0, null, null, null);
//Check for errors
if (ret == NO_ERROR)
return null;
else
return GetError(ret);
}
/// <summary>
/// Remove the share from cache.
/// </summary>
/// <returns>Null if successful, otherwise error message.</returns>
public static string DisconnectFromShare(string uri, bool force)
{
//remove the share
int ret = WNetCancelConnection(uri, force);
//Check for errors
if (ret == NO_ERROR)
return null;
else
return GetError(ret);
}
#region P/Invoke Stuff
[DllImport("Mpr.dll")]
private static extern int WNetUseConnection(
IntPtr hwndOwner,
NETRESOURCE lpNetResource,
string lpPassword,
string lpUserID,
int dwFlags,
string lpAccessName,
string lpBufferSize,
string lpResult
);
[DllImport("Mpr.dll")]
private static extern int WNetCancelConnection(
string lpName,
bool fForce
);
[StructLayout(LayoutKind.Sequential)]
private class NETRESOURCE
{
public int dwScope = 0;
public int dwType = 0;
public int dwDisplayType = 0;
public int dwUsage = 0;
public string lpLocalName = "";
public string lpRemoteName = "";
public string lpComment = "";
public string lpProvider = "";
}
#region Consts
const int RESOURCETYPE_DISK = 0x00000001;
const int CONNECT_UPDATE_PROFILE = 0x00000001;
#endregion
#region Errors
const int NO_ERROR = 0;
const int ERROR_ACCESS_DENIED = 5;
const int ERROR_ALREADY_ASSIGNED = 85;
const int ERROR_BAD_DEVICE = 1200;
const int ERROR_BAD_NET_NAME = 67;
const int ERROR_BAD_PROVIDER = 1204;
const int ERROR_CANCELLED = 1223;
const int ERROR_EXTENDED_ERROR = 1208;
const int ERROR_INVALID_ADDRESS = 487;
const int ERROR_INVALID_PARAMETER = 87;
const int ERROR_INVALID_PASSWORD = 1216;
const int ERROR_MORE_DATA = 234;
const int ERROR_NO_MORE_ITEMS = 259;
const int ERROR_NO_NET_OR_BAD_PATH = 1203;
const int ERROR_NO_NETWORK = 1222;
const int ERROR_SESSION_CREDENTIAL_CONFLICT = 1219;
const int ERROR_BAD_PROFILE = 1206;
const int ERROR_CANNOT_OPEN_PROFILE = 1205;
const int ERROR_DEVICE_IN_USE = 2404;
const int ERROR_NOT_CONNECTED = 2250;
const int ERROR_OPEN_FILES = 2401;
private struct ErrorClass
{
public int num;
public string message;
public ErrorClass(int num, string message)
{
this.num = num;
this.message = message;
}
}
private static ErrorClass[] ERROR_LIST = new ErrorClass[] {
new ErrorClass(ERROR_ACCESS_DENIED, "Error: Access Denied"),
new ErrorClass(ERROR_ALREADY_ASSIGNED, "Error: Already Assigned"),
new ErrorClass(ERROR_BAD_DEVICE, "Error: Bad Device"),
new ErrorClass(ERROR_BAD_NET_NAME, "Error: Bad Net Name"),
new ErrorClass(ERROR_BAD_PROVIDER, "Error: Bad Provider"),
new ErrorClass(ERROR_CANCELLED, "Error: Cancelled"),
new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"),
new ErrorClass(ERROR_INVALID_ADDRESS, "Error: Invalid Address"),
new ErrorClass(ERROR_INVALID_PARAMETER, "Error: Invalid Parameter"),
new ErrorClass(ERROR_INVALID_PASSWORD, "Error: Invalid Password"),
new ErrorClass(ERROR_MORE_DATA, "Error: More Data"),
new ErrorClass(ERROR_NO_MORE_ITEMS, "Error: No More Items"),
new ErrorClass(ERROR_NO_NET_OR_BAD_PATH, "Error: No Net Or Bad Path"),
new ErrorClass(ERROR_NO_NETWORK, "Error: No Network"),
new ErrorClass(ERROR_BAD_PROFILE, "Error: Bad Profile"),
new ErrorClass(ERROR_CANNOT_OPEN_PROFILE, "Error: Cannot Open Profile"),
new ErrorClass(ERROR_DEVICE_IN_USE, "Error: Device In Use"),
new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"),
new ErrorClass(ERROR_NOT_CONNECTED, "Error: Not Connected"),
new ErrorClass(ERROR_OPEN_FILES, "Error: Open Files"),
new ErrorClass(ERROR_SESSION_CREDENTIAL_CONFLICT, "Error: Credential Conflict"),
};
private static string GetError(int errNum)
{
foreach (ErrorClass er in ERROR_LIST)
{
if (er.num == errNum) return er.message;
}
return "Error: Unknown, " + errNum;
}
#endregion
#endregion
}
你使用它就像一样简单
DisconnectFromShare(@"''server-a'DBFiles", true); //Disconnect in case we are currently connected with our credentials;
ConnectToShare(@"''server-a'DBFiles", username, password); //Connect with the new credentials
if (!Directory.Exists(@"''server-a'DBFiles'"))
Directory.CreateDirectory(@"''server-a'DBFiles'"+Test);
File.Copy("C:'Temp'abc.txt", @"''server-a'DBFiles'");
DisconnectFromShare(@"''server-a'DBFiles", false); //Disconnect from the server.
您可以使用模拟来更改线程用户上下文：
[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,
int dwLogonType, int dwLogonProvider, out SafeTokenHandle phToken);
...
LogonUser(userName, domainName, password,
LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT,
out safeTokenHandle);
...
using (WindowsIdentity newId = new WindowsIdentity(safeTokenHandle.DangerousGetHandle()))
{
using (WindowsImpersonationContext impersonatedUser = newId.Impersonate())
{
// Check the identity.
Console.WriteLine("After impersonation: "
+ WindowsIdentity.GetCurrent().Name);
//Do your coping here
}
}
MSDN示例窗口模拟上下文
NetworkShare.DisconnectFromShare(@"''server-a'DBFiles", true); //Remove this line
NetworkShare.ConnectToShare(@"''server-a'DBFiles", "user1", "password1!"); //Connect with the new credentials
File.Copy(@"c:'temp'T1.txt", @"''server-a'DBFiles'T1.txt");
NetworkShare.DisconnectFromShare(@"''server-a'DBFiles", false); //Remove this line also
在谷歌搜索了02天后，上面的内容终于对我起到了作用。如果您在第一次登录后使用"NetworkShare.DisconnectFromShare"，则会收到一个错误，即'Access denied'。然后每次需要重新启动服务器或需要执行'net use * /del'命令来删除windows中保存的凭据时。
我已经从远程服务器复制了这个文件。请找到代码。
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.Security.Principal;
using System.Runtime.InteropServices;
namespace IMPolicy
{
public partial class ExtractData : System.Web.UI.Page
{
[DllImport("advapi32.DLL", SetLastError = true)]
public static extern int LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
protected void Page_Load(object sender, EventArgs e)
{
AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
IntPtr token = default(IntPtr);
if (LogonUser("UserName", "Domain", "Password", 2, 0, ref token) != 0)
{
WindowsIdentity identity = new WindowsIdentity(token);
WindowsImpersonationContext context = identity.Impersonate();
try
{
File.Copy(@"''''10.10.38.25'd$''Sourav''Draft Report ITC-LRBD_Online Booking Portal_12082016.pdf", @"d:''Draft Report ITC-LRBD_Online Booking Portal_12082016.pdf", true);
}
finally
{
context.Undo();
}
}
}
}
}
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Text;
using System.Threading.Tasks;
namespace Files_copy_from_Server
{
class Program
{
static void Main(string[] args)
{
NetworkShare.copyfiles();
Console.ReadLine();
}
}
public static class NetworkShare
{
public static void copyfiles()
{
try
{
string username = "username";
string password = "Password";
DisconnectFromShare(@"''192.168.11.95'Destination", true);
//Disconnect in case we are currently connected with our credentials;
ConnectToShare(@"''192.168.11.95'Destination", username, password); //Connect with the new credentials
if (!Directory.Exists(@"''192.168.11.95'Destination'"))
Directory.CreateDirectory(@"''192.168.11.95'Destination'");
File.Copy(@"D:'OldBackup'CADCallEnvelopBL.cs", @"''192.168.11.95'Destination'CADCallEnvelopBL.cs");
DisconnectFromShare(@"''192.168.11.95'Destination'", false);
//Disconnect from the server.
}
catch (Exception objError)
{
Console.Write(objError.Message);
}
}
/// <summary>
/// Connects to the remote share
/// </summary>
/// <returns>Null if successful, otherwise error message.</returns>
public static string ConnectToShare(string uri, string username, string
password)
{
//Create netresource and point it at the share
NETRESOURCE nr = new NETRESOURCE();
nr.dwType = RESOURCETYPE_DISK;
nr.lpRemoteName = uri;
//Create the share
int ret = WNetUseConnection(IntPtr.Zero, nr, password, username, 0, null, null, null);
//Check for errors
if (ret == NO_ERROR)
return null;
else
return GetError(ret);
}
/// <summary>
/// Remove the share from cache.
/// </summary>
/// <returns>Null if successful, otherwise error message.</returns>
public static string DisconnectFromShare(string uri, bool force)
{
//remove the share
int ret = WNetCancelConnection(uri, force);
//Check for errors
if (ret == NO_ERROR)
return null;
else
return GetError(ret);
}
#region P/Invoke Stuff
[DllImport("Mpr.dll")]
private static extern int WNetUseConnection(
IntPtr hwndOwner,
NETRESOURCE lpNetResource,
string lpPassword,
string lpUserID,
int dwFlags,
string lpAccessName,
string lpBufferSize,
string lpResult
);
[DllImport("Mpr.dll")]
private static extern int WNetCancelConnection(
string lpName,
bool fForce
);
[StructLayout(LayoutKind.Sequential)]
private class NETRESOURCE
{
public int dwScope = 0;
public int dwType = 0;
public int dwDisplayType = 0;
public int dwUsage = 0;
public string lpLocalName = "";
public string lpRemoteName = "";
public string lpComment = "";
public string lpProvider = "";
}
#region Consts
const int RESOURCETYPE_DISK = 0x00000001;
const int CONNECT_UPDATE_PROFILE = 0x00000001;
#endregion
#region Errors
const int NO_ERROR = 0;
const int ERROR_ACCESS_DENIED = 5;
const int ERROR_ALREADY_ASSIGNED = 85;
const int ERROR_BAD_DEVICE = 1200;
const int ERROR_BAD_NET_NAME = 67;
const int ERROR_BAD_PROVIDER = 1204;
const int ERROR_CANCELLED = 1223;
const int ERROR_EXTENDED_ERROR = 1208;
const int ERROR_INVALID_ADDRESS = 487;
const int ERROR_INVALID_PARAMETER = 87;
const int ERROR_INVALID_PASSWORD = 1216;
const int ERROR_MORE_DATA = 234;
const int ERROR_NO_MORE_ITEMS = 259;
const int ERROR_NO_NET_OR_BAD_PATH = 1203;
const int ERROR_NO_NETWORK = 1222;
const int ERROR_SESSION_CREDENTIAL_CONFLICT = 1219;
const int ERROR_BAD_PROFILE = 1206;
const int ERROR_CANNOT_OPEN_PROFILE = 1205;
const int ERROR_DEVICE_IN_USE = 2404;
const int ERROR_NOT_CONNECTED = 2250;
const int ERROR_OPEN_FILES = 2401;
private struct ErrorClass
{
public int num;
public string message;
public ErrorClass(int num, string message)
{
this.num = num;
this.message = message;
}
}
private static ErrorClass[] ERROR_LIST = new ErrorClass[] {
new ErrorClass(ERROR_ACCESS_DENIED, "Error: Access Denied"),
new ErrorClass(ERROR_ALREADY_ASSIGNED, "Error: Already Assigned"),
new ErrorClass(ERROR_BAD_DEVICE, "Error: Bad Device"),
new ErrorClass(ERROR_BAD_NET_NAME, "Error: Bad Net Name"),
new ErrorClass(ERROR_BAD_PROVIDER, "Error: Bad Provider"),
new ErrorClass(ERROR_CANCELLED, "Error: Cancelled"),
new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"),
new ErrorClass(ERROR_INVALID_ADDRESS, "Error: Invalid Address"),
new ErrorClass(ERROR_INVALID_PARAMETER, "Error: Invalid Parameter"),
new ErrorClass(ERROR_INVALID_PASSWORD, "Error: Invalid Password"),
new ErrorClass(ERROR_MORE_DATA, "Error: More Data"),
new ErrorClass(ERROR_NO_MORE_ITEMS, "Error: No More Items"),
new ErrorClass(ERROR_NO_NET_OR_BAD_PATH, "Error: No Net Or Bad Path"),
new ErrorClass(ERROR_NO_NETWORK, "Error: No Network"),
new ErrorClass(ERROR_BAD_PROFILE, "Error: Bad Profile"),
new ErrorClass(ERROR_CANNOT_OPEN_PROFILE, "Error: Cannot Open Profile"),
new ErrorClass(ERROR_DEVICE_IN_USE, "Error: Device In Use"),
new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"),
new ErrorClass(ERROR_NOT_CONNECTED, "Error: Not Connected"),
new ErrorClass(ERROR_OPEN_FILES, "Error: Open Files"),
new ErrorClass(ERROR_SESSION_CREDENTIAL_CONFLICT, "Error: Credential Conflict"),
};
private static string GetError(int errNum)
{
foreach (ErrorClass er in ERROR_LIST)
{
if (er.num == errNum)
{
return er.message;
}
}
return "Error: Unknown, " + errNum;
}
#endregion
#endregion
}
}