安全和自動化的方式來授予ASP.NET C＃Web應用程序中的上載文件夾權限？

Question

我們的ASP.NET C＃Web應用程序將jpg，png，docx，txt等各種文件上傳到名為ClientBin的文件夾中。 在Visual Studio 2010 .NET IDE隨帶的Visual Studio 2010 .NET測試服務器上，一切正常。

但是，如果將應用程序部署到IIS7服務器，則必須授予應用程序的Web用戶上載文件的權限。 我們基本上使用IIS7登錄到我們的服務器，然后手動修改名為ClientBin的文件夾的Security屬性，該文件夾最終應包含jpg，png，docx，txt等內容。

---允許網絡用戶成功上傳工作的手動方法---------------------------

右鍵單擊資源管理器中的projectfolder \\ ClientBin文件夾，選擇“屬性”，然后選擇“安全性”選項卡。 單擊“添加”以添加適當的用戶或組。 突出顯示ASP.NET帳戶，然后選中所需訪問權限的框。 ---使上傳成功工作的手動方法---------------------------

-程序化方法，在嘗試上傳時仍會給網絡用戶帶來異常錯誤------------------

String DirectoryPath = System.IO.Path.Combine(Server.MapPath("~/ClientBin/"));
DirectorySecurity specificDirectorySecurity = Directory.GetAccessControl(DirectoryPath);
specificDirectorySecurity.AddAccessRule(new FileSystemAccessRule("Users", FileSystemRights.Modify, AccessControlType.Allow));
specificDirectorySecurity.AddAccessRule(new FileSystemAccessRule("Administrators", FileSystemRights.Modify, AccessControlType.Allow));
specificDirectorySecurity.AddAccessRule(new FileSystemAccessRule("SYSTEM", FileSystemRights.Modify, AccessControlType.Allow));
Directory.SetAccessControl(DirectoryPath, specificDirectorySecurity);

-程序化方法，在嘗試上傳時仍會給網絡用戶帶來異常錯誤------------------

另一個在線帖子建議我通過在web.config中輸入以下內容來解決此問題：

----可以通過編程方法解決問題的XML配置--------

身份impersonate =“ true” userName =“ ComputerName \\ Administrator”密碼=“ don”

----可以通過編程方法解決問題的XML配置--------

但是，如果使身份假冒為真，我擔心安全性問題。

什么是最安全，最自動化（可能意味着編程解決方案）的方式？

謝謝，

新員工

Answer 1

通常，向應用程序授予目錄權限，並且該應用程序管理用戶對上載文件夾的訪問。

Answer 2

所有：

即使我無法弄清楚C＃如何修改上傳文件夾的權限。

似乎Microsoft Windows PowerShell可以以編程方式修改上載文件夾的權限。

這是通過編程方式修改上傳文件夾權限的代碼片段：

$computerHostName = [System.Net.Dns]::GetHostName()

#These constants are used to set permissions
$inherit = [system.security.accesscontrol.InheritanceFlags]"ContainerInherit, ObjectInherit"

$propagation = [system.security.accesscontrol.PropagationFlags]::None

$colRights = [System.Security.AccessControl.FileSystemRights]"Modify"

$objType =[System.Security.AccessControl.AccessControlType]::Allow

#(MSDN Docs) The IIS_IUSRS Group has access to all the necessary file and system     resources
# so that an account, when added to this group, can seamlessly act as an application     pool identity.
#  IIS_IUSRS group by default includes the web users that log on to the Perls    Applications. 
#If a web user needs to upload resources to the folder within the Perls Web     Application that
# contains uploaded resource files then we need to ensure that the members of the
# IIS_IUSRS Group have permissions to add resource files to that particular Perls Web      Application upload folder.

#This determines which user is the guest user for IIS.  Windows Vista and 08 use the      IIS_USRS group, Previous version use
#IUSR_[MachineName]



  if ([environment]::osversion.Version.Major -eq 6) {
  $webUser="IIS_IUSRS"


  } else {

     $webUser="IUSR_" + $computerHostName

 }


$clientBinDirectoryPath = "D:\DeployedApplications\" + $umbrellaComponentName + "\" +     $siteWebComponentName + "\" + "ClientBin"

$perlsPivotErrorDirectoryPath = "D:\DeployedApplications\" + $umbrellaComponentName +      "\" + $siteWebComponentName + "\" + "PerlsPivotErrorDirectory"

$aclForClientBinDirectoryPath = Get-Acl $clientBinDirectoryPath


$accessRuleForClientBinDirectoryPath = New-Object     System.Security.AccessControl.FileSystemAccessRule($webUser, $colRights, $inherit,     $propagation, $objType)

$aclForClientBinDirectoryPath.AddAccessRule($accessRuleForClientBinDirectoryPath)

Set-Acl -aclobject $aclForClientBinDirectoryPath $clientBinDirectoryPath

$aclForPerlsPivotErrorDirectoryPath = Get-Acl $perlsPivotErrorDirectoryPath

$accessRuleForPerlsPivotErrorDirectoryPath  = New-Object     System.Security.AccessControl.FileSystemAccessRule($webUser, $colRights, $inherit,     $propagation, $objType)

$aclForPerlsPivotErrorDirectoryPath.AddAccessRule($accessRuleForPerlsPivotErrorDirectoryPath)

Set-Acl -aclobject $aclForPerlsPivotErrorDirectoryPath $perlsPivotErrorDirectoryPath