Powershell通过Thumbprint检索证书作为字符串与字符串变量

Question

我正在尝试拼凑一些 PowerShell 代码以遍历服务器列表，返回有关其 IIS 站点和绑定的一些信息，如果它们具有 https 绑定，则获取证书哈希并使用它通过指纹定位证书并返回其到期日期。

我遇到的问题是，当我在 $binding.cerficateHash 下面运行我的代码时，似乎返回了我所期望的证书哈希字符串，但是当我使用该证书哈希属性尝试通过其获取证书时指纹，它不起作用......但是当我获取证书哈希值的原始字符串值并对其进行硬编码时，它起作用了......

我检查了 certificateHash.GetType() ，它似乎只是一个字符串，所以我不明白我做错了什么，我尝试了一些事情，但无济于事，因为这是我第一次破解powershell 所以有很多我不知道的。

$sites = Invoke-Command  -ComputerName $serverName { Import-Module WebAdministration; Get-ChildItem -path IIS:\Sites }  -ErrorAction SilentlyContinue 

foreach($site in $sites)
{
   $serverName
   $site.name
   $site.physicalPath

   foreach($binding in $site.bindings.Collection)
   {
        $binding.protocol 
        $binding.bindingInformation 
        $binding.certificateHash 
        $binding.certificateStoreName

        if($binding.certificateHash)
        {
            # This outputs AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
            $binding.certificateHash 

            # this retrieves a cert and returns its expiration date, Woohooo!
            Start-Job  Invoke-Command -ComputerName  $serverName -ScriptBlock  { (Get-ChildItem -path Cert:\LocalMachine\WebHosting | Where-Object {$_.Thumbprint -eq "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" })[0].GetExpirationDateString() }         

            # this does not find a cert, and ive tried many things, and no dice.
            Start-Job  Invoke-Command -ComputerName  $serverName -ScriptBlock  { (Get-ChildItem -path Cert:\LocalMachine\WebHosting | Where-Object {$_.Thumbprint -eq $binding.certificateHash })[0].GetExpirationDateString() }                        

            # i've tried extracting the hash via "tostring" and using that, no dice
            $hash = $binding.certificateHash.ToString() 
            Start-Job  Invoke-Command -ComputerName  $serverName -ScriptBlock  { (Get-ChildItem -path Cert:\LocalMachine\WebHosting | Where-Object {$_.Thumbprint -eq $hash })[0].GetExpirationDateString() }                       

            # i've tried adding some wildcards and using the -like operator, no dice.
            $hash = "*" + $binding.certificateHash + "*" 
            Start-Job  Invoke-Command -ComputerName  $serverName -ScriptBlock  { (Get-ChildItem -path Cert:\LocalMachine\WebHosting | Where-Object {$_.Thumbprint -lilke $hash })[0].GetExpirationDateString() }                                    
        }
   }      
}

网站的示例输出。

• 站点 1
• D:\Apps\site1
• http
• *:80:Site1-test.ourdomain.com
• https
• *:443:Site1-test.ourdomain.com
• AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
• 虚拟主机

Answer 1

您调用脚本块的计算机不知道本地会话中的$binding 变量。 （这也是它在传递文字字符串时起作用的原因。）

尝试将值作为参数传递：

Invoke-Command -Computer $serverName -Script {
   param ($hash)
   (gci Cert:\LocalMachine\WebHosting | ? Thumbprint -eq $hash)[0].GetExpirationDateString()
} -Arg $binding.certificateHash