我们的自动构建脚本也将签署powershell脚本。但是我们的一些powershell脚本没有签名。当我分析时,我们发现有一个已知的问题,Powershell保存的文件正在保存在Unicode BigEndian中,无法签名。
由于它是自动化过程,如果检查文件是否以Unicode big endian保存,然后将其更改为ASCII将解决我们的问题。
在powershell中有办法吗?
答案 0 :(得分:2)
我找到了一个获取文件编码的函数here:
<#
.SYNOPSIS
Gets file encoding.
.DESCRIPTION
The Get-FileEncoding function determines encoding by looking at Byte Order Mark (BOM).
Based on port of C# code from http://www.west-wind.com/Weblog/posts/197245.aspx
.EXAMPLE
Get-ChildItem *.ps1 | select FullName, @{n='Encoding';e={Get-FileEncoding $_.FullName}} | where {$_.Encoding -ne 'ASCII'}
This command gets ps1 files in current directory where encoding is not ASCII
.EXAMPLE
Get-ChildItem *.ps1 | select FullName, @{n='Encoding';e={Get-FileEncoding $_.FullName}} | where {$_.Encoding -ne 'ASCII'} | foreach {(get-content $_.FullName) | set-content $_.FullName -Encoding ASCII}
Same as previous example but fixes encoding using set-content
#>
function Get-FileEncoding
{
[CmdletBinding()] Param (
[Parameter(Mandatory = $True, ValueFromPipelineByPropertyName = $True)] [string]$Path
)
[byte[]]$byte = get-content -Encoding byte -ReadCount 4 -TotalCount 4 -Path $Path
if ( $byte[0] -eq 0xef -and $byte[1] -eq 0xbb -and $byte[2] -eq 0xbf )
{ Write-Output 'UTF8' }
elseif ($byte[0] -eq 0xfe -and $byte[1] -eq 0xff)
{ Write-Output 'Unicode' }
elseif ($byte[0] -eq 0 -and $byte[1] -eq 0 -and $byte[2] -eq 0xfe -and $byte[3] -eq 0xff)
{ Write-Output 'UTF32' }
elseif ($byte[0] -eq 0x2b -and $byte[1] -eq 0x2f -and $byte[2] -eq 0x76)
{ Write-Output 'UTF7'}
else
{ Write-Output 'ASCII' }
}
使用this重新编码为ASCII:
If ((Get-FileEncoding -Path $file) -ine "ascii") {
[System.Io.File]::ReadAllText($file) | Out-File -FilePath $file -Encoding Ascii
}