asp.net - 动态数据的加扰 URL

Question

混淆动态数据中创建的 URL 的最佳方法是什么？

例如\Products\List.aspx?ProductId=2 可能会变成

\Products\List.aspx?x=UHJvZHVjdElkPTI=

其中“ProductId=2”采用 Base 64 编码，以防止随意窥探

\Products\List.aspx?ProductId=3

\Products\List.aspx?ProductId=4

等等...？

我可能必须从现有对象继承并覆盖某些函数 问题是哪个对象和什么函数

Metamodel 对象的 GetActionPath 看起来很有趣， 但是 DynamicRoute“{table}/{Action}.aspx” 是如何发挥作用的...

现在，在 Asp.net 1.1 站点上，我使用以下代码的自定义实现。 http://www.mvps.org/emorcillo/en/code/aspnet/qse.shtml HTTPModule 使用正则表达式重写所有查询字符串，并通过反射更改带有解码值的查询字符串集合。

那么影响改变的钩子(Hook)在哪里呢？

Answer 1

我找到了解决办法

根据建议，我实现了一个继承自 DynamicDataRoute 的 Route。

重写的方法是 GetVirtualPath 和 GetRouteData。

这是 global.asax 页面

 routes.Add(New EncodedDynamicDataRoute("{table}/{action}.aspx") With { _
.Defaults = New RouteValueDictionary(New With {.Action = PageAction.List}), _
.Constraints = New RouteValueDictionary(New With {.Action  "List|Details|Edit|Insert"}), _
.Model = model})

这是编码的动态数据路由。

Imports System.Web.DynamicData
Imports System.Web.Routing
''' <summary>
''' The purpose of this class to base 64 encode the querystring parameters.
''' It converts the keys to base64 encoded and back.
''' </summary>
Public Class EncodedDynamicDataRoute
Inherits DynamicDataRoute
Public Sub New(ByVal url As String)
    MyBase.New(url)
End Sub

Public Overloads Overrides Function GetRouteData(ByVal httpContext As HttpContextBase) As RouteData
    Dim routeData As RouteData = MyBase.GetRouteData(httpContext)
    If Not (routeData Is Nothing) Then
        DecodeRouteValues(routeData.Values)
    End If
    Return routeData
End Function
Private Sub EncodeRouteValues(ByVal routeValues As RouteValueDictionary)
    Dim tableName As Object
    If Not routeValues.TryGetValue("table", tableName) Then
        Return
    End If
    Dim table As MetaTable
    If Not Model.TryGetTable(DirectCast(tableName, String), table) Then
        Return
    End If
    Dim strOutput As New StringBuilder
    Dim val As Object
    For Each column As MetaColumn In table.PrimaryKeyColumns
        If routeValues.TryGetValue(column.Name, val) Then
            strOutput.Append(column.Name & Chr(254) & val & Chr(255))
            routeValues.Remove(column.Name)
        End If
    Next
    Dim out As String = (Convert.ToBase64String(Encoding.ASCII.GetBytes(strOutput.ToString)))
    If routeValues.ContainsKey("x") Then
        routeValues.Item("x") = out
    Else
        routeValues.Add("x", out)
    End If
End Sub
Public Overloads Overrides Function GetVirtualPath(ByVal requestContext As RequestContext, ByVal values As RouteValueDictionary) As VirtualPathData
    EncodeRouteValues(values)
    Return MyBase.GetVirtualPath(requestContext, values)
End Function
Private Sub DecodeRouteValues(ByVal routeValues As RouteValueDictionary)
    Dim tableName As Object
    If Not routeValues.TryGetValue("table", tableName) Then
        Return
    End If
    Dim table As MetaTable
    If Not Model.TryGetTable(DirectCast(tableName, String), table) Then
        Return
    End If
    Dim enc As New System.Text.ASCIIEncoding()
    Dim val As Object
    If routeValues.TryGetValue("x", val) AndAlso val <> "AAA" Then
        Dim strString As String = enc.GetString(Convert.FromBase64String((val)))
        Dim nameValuePairs As String() = strString.Split(Chr(255))
        Dim col As MetaColumn
        For Each str11 In nameValuePairs
            Dim vals() As String = str11.Split(Chr(254))
            If table.TryGetColumn(vals(0), col) Then
                routeValues.Add(val(0), col)
            End If
        Next
    End If
   End Sub
  End Class