How to Authenticate Go HTTP NTLM Requests with Windows System Credentials?

Windows System Credentials in Go HTTP NTLM Requests: A Solution with Go-OLE

To perform NTLM authentication in a Go HTTP request using the system credentials of the Windows user, consider the following approach:

Leveraging Go's support for COM interoperability, it's possible to utilize the WinHTTPRequest object to establish an HTTP connection with NTLM authentication. By leveraging the go-ole package, this can be achieved as follows:

<code class="go">package main

import (
    "fmt"

    ole "github.com/go-ole/go-ole"
    "github.com/go-ole/go-ole/oleutil"
)

func main() {
    ole.CoInitialize(0)
    defer ole.CoUninitialize()

    // Create a WinHTTPRequest object
    unknown, _ := oleutil.CreateObject("WinHTTP.WinHTTPRequest.5.1")
    request, _ := unknown.QueryInterface(ole.IID_IDispatch)

    // Set the auto login policy to use system credentials
    oleutil.CallMethod(request, "SetAutoLogonPolicy", 0)

    // Open the request with the desired URL
    oleutil.CallMethod(request, "Open", "GET", "http://example.com", false)

    // Send the request
    oleutil.CallMethod(request, "Send")

    // Retrieve the response text
    resp := oleutil.MustGetProperty(request, "ResponseText")

    // Print the response
    fmt.Println(resp.ToString())
}</code>

By utilizing the go-ole package to interact with the WinHTTPRequest object, this code snippet provides a solution to perform NTLM authentication using the system credentials of the Windows user, without the need to manually specify a username or password.

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