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POCannot write on a mapped drive using impersonation
 

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    <p>Basically I'm running the same problem as this post <a href="https://stackoverflow.com/questions/2669672/accessing-mapped-drives-when-impersonating-in-asp-net">Accessing mapped drives when impersonating in ASP.NET</a></p> <p>I'm working on a legacy website and I need to allow the admins to change the site's logo, banners, etc, from an image file on their desktops to a mapped drive on the server.</p> <p>So, their website is using impersonation whenever it needs to save on the drive, and it's working just fine; however I can't manage to make it work on their test environment nor in my test environment.</p> <p>¿Any ideas? I've double checked user and password (the code doesn't specify domain) and that's not the issue.</p> <p>Here's an excerpt from the code that handles impersonation:</p> <pre><code>public bool ImpersonateUser(String user, String password, String domain) { WindowsIdentity tempWindowsIdentity; IntPtr token = IntPtr.Zero; IntPtr tokenDuplicate = IntPtr.Zero; if (RevertToSelf()) { if (LogonUserA(user, domain, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref token) != 0) { if (DuplicateToken(token, 2, ref tokenDuplicate) != 0) { tempWindowsIdentity = new WindowsIdentity(tokenDuplicate); impersonationContext = tempWindowsIdentity.Impersonate(); if (impersonationContext != null) { CloseHandle(token); CloseHandle(tokenDuplicate); return true; } } } } //... rest of the code </code></pre> <p>And a -sanitized- test:</p> <pre><code>if (impUtility.ImpersonateUser("user", "password", string.Empty)) { fu.SaveAs(@"C:\Images\" + imgName); } </code></pre>
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