使用用户/密码连接到TFS的问题

Question

当我尝试连接到tfs时，函数Get-Data失败并显示401错误，尽管函数Get-DataWithCred使用相同的参数成功。

而且不明白这两者的区别？

function Get-Data([string]$username, [string]$password, [string]$url) 
{
  # Step 1. Create a username:password pair
  $credPair = "$($username):$($password)"

  # Step 2. Encode the pair to Base64 string
  $encodedCredentials = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($credPair))

  # Step 3. Form the header and add the Authorization attribute to it
  $headers = @{ Authorization = "Basic $encodedCredentials" }

  # Step 4. Make the GET request
  $responseData =  Invoke-WebRequest -Uri $url -Method Get -Headers $headers
  return $responseData
}


function Get-DataWithCred([string]$username, [string]$password, [string]$url) 
{
  $p = ConvertTo-SecureString -String $password -AsPlainText -Force

  $Cred = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $username, $p

  $responseData =  Invoke-WebRequest -Uri $url -Method Get  -Credential $Cred
  return $responseData
}

目的是通过tfs与python脚本连接失败，当我使用请求库时失败的方式与Get-Data函数相同。

>>> r = requests.get('https://tfs-url.com', auth=('user', 'pass'))
>>> r.status_code
401

Answer 1

看起来$ encodedCredentials存在问题。

看看Choosing the right authentication mechanism

对于连接到TFS的脚本，我使用以下代码：

     $strUser = 'domain\userID'
     $password = "YOURPASSWORD"
     $strPass = ConvertTo-SecureString -String $password -AsPlainText -Force
     $cred= New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList ($strUser, $strPass)

而不是像你一样连接到TFS：

$responseData =  Invoke-WebRequest -Uri $url -Method Get  -Credential $cred

或者，如果您想与运行该脚本的用户连接到TFS，您可以使用

-UseDefaultCredentials

代码段：

$responseData =  Invoke-WebRequest -Uri $url -Method Get  -UseDefaultCredentials

Answer 2

您需要使用microsoft方式传递凭证：ntlm协议。

请求默认不支持此协议，但库requests_ntlm通过添加对ntlm的支持来扩展请求。

一个简单的例子：

import os
import requests
from requests_ntlm import HttpNtlmAuth


def main():
    user = "user"
    password = "password"

    session = requests.Session()
    session.auth = HttpNtlmAuth(user, password)

    url = "https://tfs-url.com"

    response = session.get(url)

    print(response)


if __name__ == "__main__":
    main()