Copy File to remote windows server using .net core

Question

I have put endpoint that accept the zip file. The endpoint is working fine to get the zip file. Now from that endpoint after I get that file I am trying to copy that file to a different remote Server. I try below code to connect to remote Server using the below code by referring to micrsoft docs https://learn.microsoft.com/en-us/dotnet/api/system.security.principal.windowsidentity.runimpersonated?view=net-6.0:

  bool returnValue = LogonUser(@"ACC\Test.test", "acc.local", "password",
                    9, 0,
                    out safeAccessTokenHandle);

                if (returnValue)
                {
                    WindowsIdentity.RunImpersonated(safeAccessTokenHandle, () =>
                    {

                         //Destination remote server folder to upload file
                        var pathToUploadFile = @"\\152.158.100.45\D\FileUpload";
                        string fileName;

                        fileName = file.FileName;
                        var path = Path.Combine(pathToUploadFile, fileName);

                        using (var stream = new FileStream(path, FileMode.Create))
                        {
                            //save a zip file to folder
                            file.CopyTo(stream);
                        }
                    });
                }

In this code I get error of username and password is incorrect in this line of code:

var stream = new FileStream(path, FileMode.Create)

I am not even sure if the LogonUser method connects to a remote server. So is there is better way to do this copy file to remote server Please give an idea to implement in .net core 6.0 C#. Any help is really appreciated. Thanks

Seems like giving that kind of access would be pretty dangerous. Couldn't you just post it to the other server and let its backend decide where to put it? — pcalkins, Mar 25 '22 at 20:19
in general people don't have access to write to or modify folders on machines outside of a domain. For "remote" servers, generally there'd be an API which exposes methods for uploading files. Then the back-end would check authorization and then process the file. (It would have permission to write/modify files with in it's own domain...) — pcalkins, Mar 28 '22 at 18:49

score 0 · Accepted Answer · answered Mar 28 '22 at 18:57

0

Finally I am able to solve the issue by implementing the Win32 API called WNetUseConnection solutions that was mentioned on below questions: Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials

answered Mar 28 '22 at 18:57

Sabbu

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This is also another solution. I am adding here so that in future it might help somebody. https://thoughtsonprogramming.wordpress.com/2018/09/28/how-to-securely-access-remote-machine-or-server-from-your-asp-net-mvc-website/ – Sabbu Mar 29 '22 at 14:09

Copy File to remote windows server using .net core

1 Answers1