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ASP.NET页面授权......你是怎么做到的?

[英]ASP.NET Page Authorization… How do you do it?

我目前正在研究asp.net中标准页面授权配置的替代解决方案。

如果您的文件目录需要相同的访问策略,但是如果您有许多单独的访问策略,则位置标记很难处理。 我可以滚动我自己的自定义身份验证系统,但如果可以避免那可能更好。

目前我们正在为页面内容使用类似azman的权限授权系统,但我还没有找到将其与标准页面安全性集成的好方法。

有关如何做到这一点的任何建议? 有没有集成azman和asp.net页面授权的解决方案? 我应该注意哪些其他标准解决方案?

我在一个巨大的应用程序中做了很多不同的权限和不同的角色,如下所示[我没有这里的代码所以我只是尝试在这里重新创建]:

我首先实现了一个名为SecuredPage的类,如下所示:


public class SecuredPage : System.Web.UI.Page
{
    // Those Permissions are mandatory, so user needs to have all of them
    public List MandatoryPermissions { get; set; }

    // Those Permissions are optional, so if the user have at least one of them, he can access
    public List OptionalPermissions { get; set; }

    protected override void OnLoad(EventArgs e)
    {
        MyUser loggedUser = (MyUser) this.User;

        base.OnLoad(e);

        foreach (Permission mandatoryPermission in MandatoryPermissions)
        {
            // if the user don't have permission, we can redirect him
            if (!loggedUser.HasPermission(mandatoryPermission))
            {
                RedirectToDontHaveAccess();
                break;
            }
        }

        bool hasAccessToThePage = false;

        foreach (Permission optionalPermission in OptionalPermissions)
        {
            // If the user has at least one of the permissions, he can access
            if (loggedUser.HasPermission(optionalPermission))
            {
                hasAccessToThePage = true;
            }
        }

        if (!hasAccessToThePage)
        {
            RedirectToDontHaveAccess();
        }

    }

    private void RedirectToDontHaveAccess()
    {
        throw new NotImplementedException();
    }
}

对于用户需要访问权限的所有页面,这将是我的BasePage。 MandatoryPermissions是用户必须拥有访问页面的权限,而OptionalPermissions是用户至少需要其中一个访问页面的权限。 没有必要在每个页面上同时使用这两个页面,因为如果您有MandatoryPermissions则无论您是否拥有选项都无关紧要。

许可是一个枚举:


public enum Permission
{
    // Usually this enum will replicate a domain table from the database
    EditUser = 1,
    SearchUserByUsername = 2,
    SearchUserByEmail = 3

}

MyUserMembershipUser一个实现:


public class MyUser : System.Web.Security.MembershipUser
{
    internal bool HasPermission(Permission permission)
    {
        //
        // TODO: Check on database if the user has the permission or not
        //
    }
}

然后,您在页面中唯一需要做的就是填充权限列表:


public partial class EditUser : SecuredPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
        MandatoryPermissions.Add(Permission.EditUser);
    }
}

public partial class SearchUser : SecuredPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
        OptionalPermissions.Add(Permission.SearchUserByUsername);
        OptionalPermissions.Add(Permission.SearchUserByEmail);
    }
}

好的,搜索示例不是那么好,但我认为你得到了图片。

整个想法是base.OnLoad(e); 在权限验证之前调用,因此您只需要填写Page_Load的权限。

我不确定这是否是最佳解决方案,但我确信它有很大帮助:)

如何将页面映射到数据库中的角色,然后让您的母版页检查页面上的数据库?

您是否在应用程序的Application_AuthenticateRequest方法中设置了GenericIdentity和IPrincipal对象?

我们目前使用我们的域在SQL Server数据库上执行身份验证和用户组/角色以提供授权。 在Application_AuthenticateRequest方法期间,我收集所有这些数据并基于它创建FormsAuthenticationTicket对象。

通过这样做,我现在可以通过在我的代码中执行简单的User.IsInRole(“RoleX”)命令来访问用户的角色,这使我可以轻松锁定/解锁用户控件,甚至可以执行简单的Response.Redirect()如果他们没有适当的授权,请到“授权错误”页面。

这是我的AuthenticateRequest方法的样子(VB.NET)

Sub Application_AuthenticateRequest(ByVal sender As Object, _
                                       ByVal e As EventArgs)

      Dim formsAuthTicket As FormsAuthenticationTicket
      Dim httpCook As HttpCookie
      Dim objGenericIdentity As GenericIdentity
      Dim objMyAppPrincipal As CustomPrincipal
      Dim strRoles As String()

      httpCook = Context.Request.Cookies.Get("authCookieEAF")
      formsAuthTicket = FormsAuthentication.Decrypt(httpCook.Value)
      objGenericIdentity = New GenericIdentity(formsAuthTicket.Name)
      strRoles = formsAuthTicket.UserData.Split("|"c)
      objMyAppPrincipal = New CustomPrincipal(objGenericIdentity, strRoles)
      HttpContext.Current.User = objMyAppPrincipal    

   End Sub

......同样,这是CustomPrincipal对象的样子:

Public Class CustomPrincipal
   Implements IPrincipal


   ''' <summary>
   '''    Identity object of user.
   ''' </summary>
   ''' <remarks></remarks>
   Private m_identity As IIdentity

   ''' <summary>
   '''    Roles(s) a user is a part of.
   ''' </summary>
   ''' <remarks></remarks>
   Private m_roles As String()

   ''' <summary>
   '''    Name of user.
   ''' </summary>
   ''' <remarks></remarks>
   Private m_userId As String

   ''' <summary>
   '''    Gets/Sets the user name.
   ''' </summary>
   ''' <value>m_userId</value>
   ''' <returns>Current name of user.</returns>
   ''' <remarks></remarks>
   Public Property UserId() As String
      Get
         Return m_userId
      End Get
      Set(ByVal value As String)
         m_userId = value
      End Set
   End Property

   ''' <summary>
   '''    Gets the identity object of the user.
   ''' </summary>
   ''' <value>m_identity</value>
   ''' <returns>Current identity of user.</returns>
   ''' <remarks></remarks>
   Public ReadOnly Property Identity() As System.Security.Principal.IIdentity Implements System.Security.Principal.IPrincipal.Identity
      Get
         Return m_identity
      End Get
   End Property

   ''' <summary>
   '''    Full constructor.
   ''' </summary>
   ''' <param name="identity">Identity to use with Custom Principal.</param>
   ''' <param name="roles">Roles for user.</param>
   ''' <remarks>Identity object contains user name when building constructor.</remarks>
   Public Sub New(ByVal identity As IIdentity, ByVal roles As String())

      m_identity = identity
      m_roles = New String(roles.Length) {}
      roles.CopyTo(m_roles, 0)
      Array.Sort(m_roles)
      m_userId = identity.Name

   End Sub

   ''' <summary>
   '''    Determines if the current user is in the role specified.
   ''' </summary>
   ''' <param name="role">Role to test against.</param>
   ''' <returns>Boolean variable indicating if role specified exists in user's m_roles array.</returns>
   ''' <remarks></remarks>
   Public Function IsInRole(ByVal role As String) As Boolean Implements System.Security.Principal.IPrincipal.IsInRole

      Dim boolResults As Boolean

      If Array.BinarySearch(m_roles, role) >= 0 Then
         boolResults = True
      Else
         boolResults = False
      End If

      Return boolResults

   End Function

End Class

希望这能为您提供将其塑造成环境所需的一切。

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