[英]ASP.NET Page Authorization… How do you do it?
我目前正在研究asp.net中標准頁面授權配置的替代解決方案。
如果您的文件目錄需要相同的訪問策略,但是如果您有許多單獨的訪問策略,則位置標記很難處理。 我可以滾動我自己的自定義身份驗證系統,但如果可以避免那可能更好。
目前我們正在為頁面內容使用類似azman的權限授權系統,但我還沒有找到將其與標准頁面安全性集成的好方法。
有關如何做到這一點的任何建議? 有沒有集成azman和asp.net頁面授權的解決方案? 我應該注意哪些其他標准解決方案?
我在一個巨大的應用程序中做了很多不同的權限和不同的角色,如下所示[我沒有這里的代碼所以我只是嘗試在這里重新創建]:
我首先實現了一個名為SecuredPage的類,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();
}
}
對於用戶需要訪問權限的所有頁面,這將是我的BasePage。 MandatoryPermissions
是用戶必須擁有訪問頁面的權限,而OptionalPermissions
是用戶至少需要其中一個訪問頁面的權限。 沒有必要在每個頁面上同時使用這兩個頁面,因為如果您有MandatoryPermissions
則無論您是否擁有選項都無關緊要。
許可是一個枚舉:
public enum Permission
{
// Usually this enum will replicate a domain table from the database
EditUser = 1,
SearchUserByUsername = 2,
SearchUserByEmail = 3
}
而MyUser
是MembershipUser
一個實現:
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,您在頁面中唯一需要做的就是填充權限列表:
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,但我認為你得到了圖片。
整個想法是base.OnLoad(e);
在權限驗證之前調用,因此您只需要填寫Page_Load
的權限。
我不確定這是否是最佳解決方案,但我確信它有很大幫助:)
如何將頁面映射到數據庫中的角色,然后讓您的母版頁檢查頁面上的數據庫?
您是否在應用程序的Application_AuthenticateRequest方法中設置了GenericIdentity和IPrincipal對象?
我們目前使用我們的域在SQL Server數據庫上執行身份驗證和用戶組/角色以提供授權。 在Application_AuthenticateRequest方法期間,我收集所有這些數據並基於它創建FormsAuthenticationTicket對象。
通過這樣做,我現在可以通過在我的代碼中執行簡單的User.IsInRole(“RoleX”)命令來訪問用戶的角色,這使我可以輕松鎖定/解鎖用戶控件,甚至可以執行簡單的Response.Redirect()如果他們沒有適當的授權,請到“授權錯誤”頁面。
這是我的AuthenticateRequest方法的樣子(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
......同樣,這是CustomPrincipal對象的樣子:
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
希望這能為您提供將其塑造成環境所需的一切。
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