将文件复制到网络共享我无法访问

这是这个问题的延伸

我正在尝试将文件从本地用户临时文件夹复制到远程文件共享。 我无权访问远程文件共享，因此我必须冒充用户。

现在，我可以从远程服务器成功读取文件并在本地复制它，但是我无法将本地文件写入共享，因为它给了我错误：

LOCAL文件的访问被拒绝（因为我现在正在模仿另一个用户）。

如果你需要一些代码，我可以发布它。

Answer 1

管理找到答案，

我只需要在模拟远程用户之前为本地文件创建一个FileStream ，然后将该FileStream传递给复制function。

编辑：所以这是我的整个文件复制例程

 using System.Security.Principal; using System.Security.Permissions; using System.Windows.Forms; using System.Runtime.InteropServices; using System.Diagnostics; using System.IO; public class ImpersonatedFileCopy : IDisposable { #region Assembly Functions [DllImport("advapi32.dll")] public static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken); [DllImport("kernel32.dll")] public static extern bool CloseHandle(IntPtr handle); #endregion #region Private Variables private IntPtr _TokenHandle = new IntPtr(0); private WindowsImpersonationContext _WindowsImpersonationContext; #endregion #region Constructors public ImpersonatedFileCopy(string domain, string username, string password) { Impersonate(domain, username, password); } #endregion #region Methods [PermissionSet(SecurityAction.Demand, Name = "FullTrust")] private void Impersonate(string domain, string username, string password) { bool returnValue; try { const int LOGON32_PROVIDER_DEFAULT = 0; const int LOGON32_LOGON_INTERACTIVE = 2; _TokenHandle = IntPtr.Zero; //Call LogonUser to obtain a handle to an access token. returnValue = LogonUser(username, domain, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref _TokenHandle); if (returnValue) { WindowsIdentity newId = new WindowsIdentity(_TokenHandle); _WindowsImpersonationContext = newId.Impersonate(); } } catch (Exception ex) { UndoImpersonate(); Debug.Writeline("Error"+ex.Message); } } private void UndoImpersonate() { if (_WindowsImpersonationContext != null) { _WindowsImpersonationContext.Undo(); if (!_TokenHandle.Equals(IntPtr.Zero)) { CloseHandle(_TokenHandle); } } } public bool PutFile(FileStream source, string destRemoteFilename, bool overwrite) { try { if (!Directory.Exists(Path.GetDirectoryName(destRemoteFilename))) Directory.CreateDirectory(Path.GetDirectoryName(destRemoteFilename)); using (FileStream dest = File.OpenWrite(destRemoteFilename)) { source.Seek(0, SeekOrigin.Begin); source.CopyTo(dest); } return true; } catch { return false; } } public bool GetFile(string sourceRemoteFilename, FileStream dest, bool overwrite) { try { using (FileStream source = File.OpenRead(sourceRemoteFilename)) { source.Seek(0, SeekOrigin.Begin); source.CopyTo(dest); } return true; } catch { return false; } } #endregion #region IDisposable public void Dispose() { UndoImpersonate(); GC.SuppressFinalize(this); } #endregion } 

用法：

 using (FileStream dest = File.OpenWrite(localDestinationFilename)) using (copy = new ImpersonatedFileCopy(domain,user,pass)) { success = copy.GetFile(remoteSourceFilename, dest, true); }