自提升PowerShell脚本

视窗 8.1/PowerShell 4.0+

一行:)

if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) { Start-Process powershell.exe "-NoProfile -ExecutionPolicy Bypass -File `"$PSCommandPath`"" -Verb RunAs; exit }

# Your script here

下面是Powershell脚本的自我提升代码片段，它保留了工作目录:

if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
    Start-Process PowerShell -Verb RunAs "-NoProfile -ExecutionPolicy Bypass -Command `"cd '$pwd'; & '$PSCommandPath';`"";
    exit;
}

# Your script here

保存工作目录对于执行路径相关操作的脚本很重要。几乎所有其他答案都不保留此路径，这可能会在脚本的其余部分中导致意外错误。

如果您不愿意使用自我提升的脚本/片段，而只是想以管理员身份简单地启动脚本(例如;从浏览器上下文菜单)，在这里看到我的另一个答案:https://stackoverflow.com/a/57033941/2441655

乔纳森和谢伊·列维发布的代码对我不起作用。

请在下面找到工作代码:

If (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{   
#"No Administrative rights, it will display a popup window asking user for Admin rights"

$arguments = "& '" + $myinvocation.mycommand.definition + "'"
Start-Process "$psHome\powershell.exe" -Verb runAs -ArgumentList $arguments

break
}
#"After user clicked Yes on the popup, your file will be reopened with Admin rights"
#"Put your code here"

您可以创建一个批处理文件(*.bat)，在双击时使用管理权限运行powershell脚本。通过这种方式，您不需要更改powershell脚本中的任何内容。要做到这一点，创建一个与powershell脚本名称和位置相同的批处理文件，然后将以下内容放入其中:

@echo off

set scriptFileName=%~n0
set scriptFolderPath=%~dp0
set powershellScriptFileName=%scriptFileName%.ps1

powershell -Command "Start-Process powershell \"-ExecutionPolicy Bypass -NoProfile -NoExit -Command `\"cd \`\"%scriptFolderPath%`\"; & \`\".\%powershellScriptFileName%\`\"`\"\" -Verb RunAs"

就是这样!

下面是解释:

假设powershell脚本位于路径C:\Temp\ScriptTest。ps1，您的批处理文件必须有路径C:\Temp\ScriptTest.bat。当有人执行这个批处理文件时，会发生以下步骤:

The cmd will execute the command powershell -Command "Start-Process powershell \"-ExecutionPolicy Bypass -NoProfile -NoExit -Command `\"cd \`\"C:\Temp\`\"; & \`\".\ScriptTest.ps1\`\"`\"\" -Verb RunAs" A new powershell session will open and the following command will be executed: Start-Process powershell "-ExecutionPolicy Bypass -NoProfile -NoExit -Command `"cd \`"C:\Temp\`"; & \`".\ScriptTest.ps1\`"`"" -Verb RunAs Another new powershell session with administrative privileges will open in the system32 folder and the following arguments will be passed to it: -ExecutionPolicy Bypass -NoProfile -NoExit -Command "cd \"C:\Temp\"; & \".\ScriptTest.ps1\"" The following command will be executed with administrative privileges: cd "C:\Temp"; & ".\ScriptTest.ps1" Once the script path and name arguments are double quoted, they can contain space or single quotation mark characters ('). The current folder will change from system32 to C:\Temp and the script ScriptTest.ps1 will be executed. Once the parameter -NoExit was passed, the window wont be closed, even if your powershell script throws some exception.

@pgk和@Andrew Odri的回答的问题是当您有脚本参数时，特别是当它们是强制性的时。可以通过以下方法解决此问题:

用户右键单击.ps1文件并选择“使用PowerShell运行”:通过输入框向他询问参数(这是比使用HelpMessage参数属性更好的选择); 用户通过控制台执行脚本:允许他传递所需的参数，并让控制台强制他通知必须的参数。

下面是如何将是代码，如果脚本有计算机名和端口强制参数:

[CmdletBinding(DefaultParametersetName='RunWithPowerShellContextMenu')]
param (
    [parameter(ParameterSetName='CallFromCommandLine')]
    [switch] $CallFromCommandLine,

    [parameter(Mandatory=$false, ParameterSetName='RunWithPowerShellContextMenu')]
    [parameter(Mandatory=$true, ParameterSetName='CallFromCommandLine')]
    [string] $ComputerName,

    [parameter(Mandatory=$false, ParameterSetName='RunWithPowerShellContextMenu')]
    [parameter(Mandatory=$true, ParameterSetName='CallFromCommandLine')]
    [UInt16] $Port
)

function Assert-AdministrativePrivileges([bool] $CalledFromRunWithPowerShellMenu)
{
    $isAdministrator = ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

    if ($isAdministrator)
    {
        if (!$CalledFromRunWithPowerShellMenu -and !$CallFromCommandLine)
        {
            # Must call itself asking for obligatory parameters
            & "$PSCommandPath" @script:PSBoundParameters -CallFromCommandLine
            Exit
        }
    }
    else
    {
        if (!$CalledFromRunWithPowerShellMenu -and !$CallFromCommandLine)
        {
            $serializedParams = [Management.Automation.PSSerializer]::Serialize($script:PSBoundParameters)

            $scriptStr = @"
                `$serializedParams = '$($serializedParams -replace "'", "''")'

                `$params = [Management.Automation.PSSerializer]::Deserialize(`$serializedParams)

                & "$PSCommandPath" @params -CallFromCommandLine
"@

            $scriptBytes = [System.Text.Encoding]::Unicode.GetBytes($scriptStr)
            $encodedCommand = [Convert]::ToBase64String($scriptBytes)

            # If this script is called from another one, the execution flow must wait for this script to finish.
            Start-Process -FilePath 'powershell' -ArgumentList "-ExecutionPolicy Bypass -NoProfile -EncodedCommand $encodedCommand" -Verb 'RunAs' -Wait
        }
        else
        {
            # When you use the "Run with PowerShell" feature, the Windows PowerShell console window appears only briefly.
            # The NoExit option makes the window stay visible, so the user can see the script result.
            Start-Process -FilePath 'powershell' -ArgumentList "-ExecutionPolicy Bypass -NoProfile -NoExit -File ""$PSCommandPath""" -Verb 'RunAs'
        }

        Exit
    }
}

function Get-UserParameters()
{
    [string] $script:ComputerName = [Microsoft.VisualBasic.Interaction]::InputBox('Enter a computer name:', 'Testing Network Connection')

    if ($script:ComputerName -eq '')
    {
        throw 'The computer name is required.'
    }

    [string] $inputPort = [Microsoft.VisualBasic.Interaction]::InputBox('Enter a TCP port:', 'Testing Network Connection')

    if ($inputPort -ne '')
    {
        if (-not [UInt16]::TryParse($inputPort, [ref]$script:Port))
        {
            throw "The value '$inputPort' is invalid for a port number."
        }
    }
    else
    {
        throw 'The TCP port is required.'
    }
}

# $MyInvocation.Line is empty in the second script execution, when a new powershell session
# is started for this script via Start-Process with the -File option.
$calledFromRunWithPowerShellMenu = $MyInvocation.Line -eq '' -or $MyInvocation.Line.StartsWith('if((Get-ExecutionPolicy')

Assert-AdministrativePrivileges $calledFromRunWithPowerShellMenu

# Necessary for InputBox
[System.Reflection.Assembly]::Load('Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a') | Out-Null

if ($calledFromRunWithPowerShellMenu)
{
    Get-UserParameters
}

# ... script code
Test-NetConnection -ComputerName $ComputerName -Port $Port

这是一个澄清…

powershell的RUNAS / SAVECRED凭据“不安全”，尝试了一下，它将管理员身份和密码添加到凭据缓存中，可以在其他地方使用。如果您已经这样做了，我建议您检查并删除该条目。

请检查您的程序或代码，因为微软的策略是，如果没有UAC(入口点)以管理身份执行程序，则不能将用户代码和管理代码混合在同一个代码blob中。这将是Linux上的sudo(同样的事情)。

UAC有3种类型，在程序清单中生成的提示符或入口点。它不会提升程序，所以如果没有UAC，它需要管理，它将失败。虽然UAC作为管理员需求是好的，但它可以防止在没有身份验证的情况下执行代码，并防止混合代码场景在用户级别执行。