如何检查单词文件是否有密码? [英] How to check if a word file has a password?

问题描述

我构建了一个将.doc文件转换为.docx的脚本.

I built a script that converts .doc files to .docx.

我遇到一个问题，当.doc文件受密码保护时，我无法访问它，然后脚本挂起.

I have a problem that when the .doc file is password-protected, I can't access it and then the script hangs.

我正在寻找一种在打开文件之前检查文件是否具有密码的方法.

I am looking for a way to check if the file has a password before I open it.

我使用Documents.Open方法打开文件.

推荐答案

如果脚本在打开文档时挂起，则中概述的方法这个问题可能有帮助，只有在PowerShell中您使用try..catch块而不是On Error Resume Next:

If your script hangs on opening the document, the approach outlined in this question might help, only that in PowerShell you'd use a try..catch block instead of On Error Resume Next:

$filename = "C:\path\to\your.doc"

$wd = New-Object -COM "Word.Application"

try {
  $doc = $wd.Documents.Open($filename, $null, $null, $null, "")
} catch {
  Write-Host "$filename is password-protected!"
}

如果您可以打开文件，但是内容受到保护，则可以这样确定它:

If you can open the file, but the content is protected, you can determine it like this:

if ( $doc.ProtectionType -ne -1 ) {
  Write-Host ($doc.Name + " is password-protected.")
  $doc.Close()
}

如果这些方法都不起作用，您可能不得不求助于此答案中所述的方法.粗略翻译到PowerShell(用于检测加密文档的部分):

If none of these work you may have to resort to the method described in this answer. Rough translation to PowerShell (of those parts that detect encrypted documents):

$bytes  = [System.IO.File]::ReadAllBytes($filename)
$prefix = [System.Text.Encoding]::Default.GetString($bytes[1..2]);

if ($prefix -eq "ÐÏ") {
  # DOC 2005
  if ($bytes[0x20c] -eq 0x13) { $encrypted = $true }

  # DOC/XLS 2007+
  $start = [System.Text.Encoding]::Default.GetString($bytes[0..2000]).Replace("\0", " ")
  if ($start -like "*E n c r y p t e d P a c k a g e") { $encrypted = $true }
}

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