Powershell 替换 csv 对象

Question

我需要制作过期证书报告，但在替换从“certutil”导出的 csv 中的证书过期日期 OID 时遇到问题。 ForEach-Object 命令无法识别该列并替换整个 csv，但我可以使用 Where-Object 过滤模板。

$currdate = Get-Date
$date = (Get-Date).AddYears(2)
$template = "RDP|IIS"
$path = "C:\Temp\"
    if(!(test-path $path))
{
        New-Item -ItemType Directory -Force -Path $path
}
certutil -view  -restrict Disposition=20 -out "Request.CommonName,NotAfter,CertificateTemplate" csv | Out-File $path\ExpiredCerts.csv 
Import-Csv $path\ExpiredCerts.csv | ForEach-Object {$_.'Certificate Template' -replace "^\d.* ",""} 
Import-Csv $path\ExpiredCerts.csv |Where-Object {$date -gt $_.'Certificate Expiration Date' -and $currdate -lt $_.'Certificate Expiration Date' -and $_.'Certificate Template' -match $template} | ConvertTo-Html -Head $Header | Out-File $path\ExpiredCerts.htm

---

CSV

"Request Common Name","Certificate Expiration Date","Certificate Template"
"*.piltover1.com","11/06/2022 13:08","1.3.6.1.4.1.311.21.8.9809061.13872499.9847428.7216726.9936658.242.11024705.6775621 IIS"
"*.piltover2.com","11/06/2022 13:08","1.3.6.1.4.1.311.21.8.9809061.13872499.9847428.7216726.9936658.242.11024705.6775621 IIS"
"*.piltover3.com","11/06/2022 13:08","1.3.6.1.4.1.311.21.8.9809061.13872499.9847428.7216726.9936658.242.11024705.6775621 IIS"

最终结果

$currdate = Get-Date
$date = (Get-Date).AddDays(30)
$template = "RDP|IIS"
$path = "C:\Temp\"
    if(!(test-path $path))
{
        New-Item -ItemType Directory -Force -Path $path
}
certutil -view  -restrict Disposition=20 -out "Request.CommonName,NotAfter,CertificateTemplate" csv | Out-File $path\ExpiredCerts.csv
$data = Import-csv $path\ExpiredCerts.csv
foreach ($item in $data) {
    $item.'Certificate Template' = ($item.'Certificate Template' -split ' ')[-1]
}
$data | Where-Object {$date -gt $_.'Certificate Expiration Date' -and $currdate -lt $_.'Certificate Expiration Date' -and $_.'Certificate Template' -match $template} |
        ConvertTo-Html -Head $Header | Out-File ExpiredCerts.htm

Answer 1

您可以这样做以从“证书模板”列中删除 OID，而无需将该数据写入文件并重新导入它，从中创建一个 HTML 文件。

这假设您已经在 CSV 文件中拥有来自 certutil 的原始数据：

$data = Import-Csv -Path (Join-Path -Path $path -ChildPath 'ExpiredCerts.csv')
# remove OIDs in column 'Certificate Template'
foreach ($item in $data) {
    $item.'Certificate Template' = ($item.'Certificate Template' -split ' ')[-1]
}
# filter the data you need based on expiration date and template
$data | Where-Object {$date -gt (Get-Date $_.'Certificate Expiration Date') -and 
                      $currdate -lt (Get-Date $_.'Certificate Expiration Date') -and 
                      $_.'Certificate Template' -match $template} | 
        ConvertTo-Html -Head $Header | Set-Content (Join-Path -Path $path -ChildPath 'ExpiredCerts.htm')

附：我使用Set-Content 支持Out-File，因为我们不知道您使用的是哪个版本的PowerShell。在 PS 7.x 版中，Out-File 的默认编码是 utf8NoBOM，而在 PS 5.1 版中，默认文件编码是 unicode (= UTF16-LE)，这可能不是您想要的。