UrlIdentityPermission-Klasse
Definiert die Identitätsberechtigung für den URL, aus dem der Code stammt. Diese Klasse kann nicht vererbt werden.
Namespace: System.Security.Permissions
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class UrlIdentityPermission
Inherits CodeAccessPermission
'Usage
Dim instance As UrlIdentityPermission
[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class UrlIdentityPermission : CodeAccessPermission
[SerializableAttribute]
[ComVisibleAttribute(true)]
public ref class UrlIdentityPermission sealed : public CodeAccessPermission
/** @attribute SerializableAttribute() */
/** @attribute ComVisibleAttribute(true) */
public final class UrlIdentityPermission extends CodeAccessPermission
SerializableAttribute
ComVisibleAttribute(true)
public final class UrlIdentityPermission extends CodeAccessPermission
Hinweise
Es wird der gesamte URL einschließlich Protokoll (HTTP, HTTPS, FTP) und Datei berücksichtigt. Beispielsweise ist https://www.fourthcoffee.com/process/grind.htm ein vollständiger URL.
Es kann nach vollständigen URLs gesucht oder ein Platzhalter an der letzten Position angegeben werden, z. B. https://www.fourthcoffee.com/process/\*. URLs können auch ein Platzhalterpräfix ("*") am Punkttrennzeichen enthalten. Beispielsweise ist die URL-Namenszeichenfolge https://www.fourthcoffee.com/process/grind.htm/ eine Teilmenge von http://*.fourthcoffee.com/process/grind.htm/ und http://*.com/process/grind.htm/.
Warnung
UrlIdentityPermission gewährt die Berechtigung für alle Pfade zur Datei, einschließlich URL und IP-Adresse. Um für den Zugriff auf die Datei Deny festzulegen, müssen Sie Deny für alle möglichen Pfade zur Datei festlegen. Wenn z. B. https://www.fourthcoffee.com/process/grind.htm die IP-Adresse 192.168.238.241 hat und Sie den Zugriff auf https://www.fourthcoffee.com/process/grind.htm mit Deny verweigern möchten, müssen Sie Deny für https://www.fourthcoffee.com/process/grind.htm, 192.168.238.241/grind.htm und alle anderen Pfade festlegen, über die auf den Code zugegriffen werden kann. Da URL-Pfade auf sehr viele Arten beschrieben werden können, ist es sehr schwierig, alle Pfade allein durch die Verwendung von Deny zu blockieren. Ein einfacheres Verfahren für den Umgang mit mehreren Pfaden besteht in der Kombination aus PermitOnly und Deny. Mit PermitOnly können Sie eine endliche Menge von URLs angeben und Zugriff auf diese bereitstellen. Anschließend können Sie mit Deny explizit Adressen aus dieser Menge auswählen, auf die Sie den Zugriff verweigern möchten. Weitere Informationen über dieses Thema und die Verwendung der PermitOnly-Methode mit der Deny-Methode finden Sie unter Canonicalization Problems Using Deny im Thema Verwenden der Deny-Methode.
Hinweis
In .NET Framework, Versionen 1.0 und 1.1, können Identitätsberechtigungen nicht den Berechtigungszustandswert Unrestricted haben. In .NET Framework, Version 2.0, können Identitätsberechtigungen jeden Berechtigungszustandswert haben. Das heißt, dass Identitätsberechtigungen in Version 2.0 über das gleiche Verhalten verfügen wie Berechtigungen, die die IUnrestrictedPermission-Schnittstelle implementieren. Informationen über die Ausführung von Version 2.0-Anwendungen mit der Version 1.1-Zertifizierungsstellenrichtlinie finden Sie unter <legacyV1CASPolicy>-Element.
Beispiel
Im folgenden Beispiel wird das Verhalten der UrlIdentityPermission-Methoden veranschaulicht. Anhand dieses Beispiels sollten die Ergebnisse der Methoden veranschaulicht werden, nicht die Verwendung der Methoden.
Imports System
Imports System.Security
Imports System.Security.Permissions
Imports Microsoft.VisualBasic
<Assembly: CLSCompliant(True)>
Public Class UrlIdentityPermissionDemo
Private Function IsSubsetOfDemo() As Boolean
Dim returnValue As Boolean = True
Dim url1 As String = ""
Dim url2 As String = ""
Dim urlIdPerm1, urlIdPerm2 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(url1)
urlIdPerm1 = New UrlIdentityPermission(url1)
urlGen2.ResetIndex()
Console.WriteLine("********************************************************\n")
While urlGen2.CreateUrl(url2)
urlIdPerm2 = New UrlIdentityPermission(url2)
Dim firstPermission As String = IIf(url1 = "" Or url1 Is Nothing, "null", url1)
Dim secondPermission As String = IIf(url2 = "" Or url2 Is Nothing, "null", url2)
If urlIdPerm2 Is Nothing Then
GoTo ContinueWhile2
End If
Try
If urlIdPerm1.IsSubsetOf(urlIdPerm2) Then
Console.WriteLine(firstPermission & ControlChars.Lf & " is a subset of " & secondPermission & ControlChars.Lf)
Else
Console.WriteLine(firstPermission & ControlChars.Lf & " is not a subset of " & secondPermission & ControlChars.Lf)
End If
Catch e As Exception
Console.WriteLine(IIf("An exception was thrown for subset :" & url1 = "", "null.", IIf(url1 & ControlChars.Lf & url2 = "", "null.", url2 & ControlChars.Lf & e.ToString())))
End Try
ContinueWhile2:
End While
ContinueWhile1:
End While
Return returnValue
End Function 'IsSubsetOfDemo
' Union creates a new permission that is the union of the current permission and
' the specified permission.
Private Function UnionDemo() As Boolean
Dim returnValue As Boolean = True
Dim url1 As String = ""
Dim url2 As String = ""
Dim urlIdPerm1, urlIdPerm2 As UrlIdentityPermission
Dim urlIdPerm3 As IPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(url1)
urlIdPerm1 = New UrlIdentityPermission(url1)
Console.WriteLine("**********************************************************" & ControlChars.Lf)
urlGen2.ResetIndex()
While urlGen2.CreateUrl(url2)
Try
urlIdPerm2 = New UrlIdentityPermission(url2)
Dim firstPermission As String = IIf(url1 = "" Or url1 Is Nothing, "null", url1)
Dim secondPermission As String = IIf(url2 = "" Or url2 Is Nothing, "null", url2)
urlIdPerm3 = CType(urlIdPerm1.Union(urlIdPerm2), UrlIdentityPermission)
urlIdPerm3 = urlIdPerm1.Union(urlIdPerm2)
If urlIdPerm3 Is Nothing Then
Console.WriteLine("The union of " & firstPermission & " and " & ControlChars.Lf & ControlChars.Tab & secondPermission & " is null.")
Else
Console.WriteLine("The union of " & firstPermission & " and " & ControlChars.Lf & ControlChars.Tab & secondPermission & " = " & ControlChars.Lf & ControlChars.Tab & CType(urlIdPerm3, UrlIdentityPermission).Url.ToString())
End If
Catch e As Exception
'Expected exception.
Console.WriteLine("An exception was thrown for union :" & e.ToString())
End Try
ContinueWhile2:
End While
ContinueWhile1:
End While
Return returnValue
End Function 'UnionDemo
' Intersect creates and returns a new permission that is the intersection of the
' current permission and the permission specified.
Private Function IntersectDemo() As Boolean
Dim returnValue As Boolean = True
Dim url1 As String = ""
Dim url2 As String = ""
Dim urlIdPerm1, urlIdPerm2, urlIdPerm3 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(url1)
urlIdPerm1 = New UrlIdentityPermission(url1)
Console.WriteLine("**********************************************************" & ControlChars.Lf)
urlGen2.ResetIndex()
Console.WriteLine("********************************************************\n")
While urlGen2.CreateUrl(url2)
urlIdPerm2 = New UrlIdentityPermission(url2)
Dim firstPermission As String = IIf(url1 = "" Or url1 Is Nothing, "null", url1)
Dim secondPermission As String = IIf(url2 = "" Or url2 Is Nothing, "null", url2)
Try
urlIdPerm3 = CType(urlIdPerm1.Intersect(urlIdPerm2), UrlIdentityPermission)
If Not (urlIdPerm3 Is Nothing) AndAlso Not (urlIdPerm3.Url Is Nothing) Then
Console.WriteLine("The intersection of " & firstPermission & " and " & ControlChars.Lf & ControlChars.Tab & secondPermission & " = " & ControlChars.Lf & ControlChars.Tab & CType(urlIdPerm3, UrlIdentityPermission).Url.ToString())
Else
Console.WriteLine("The intersection of " & firstPermission & " and " & ControlChars.Lf & ControlChars.Tab & secondPermission & " is null. ")
End If
Catch e As Exception
Console.WriteLine("An exception was thrown for the intersection : " & e.ToString())
returnValue = False
End Try
ContinueWhile2:
End While
ContinueWhile1:
End While
Return returnValue
End Function 'IntersectDemo
'Copy creates and returns an identical copy of the current permission.
Private Function CopyDemo() As Boolean
Dim returnValue As Boolean = True
Dim url1 As String = ""
Dim url2 As String = ""
Dim urlIdPerm1, urlIdPerm2 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(url1)
urlIdPerm1 = New UrlIdentityPermission(url1)
urlGen2.ResetIndex()
Console.WriteLine("********************************************************\n")
Try
urlIdPerm2 = CType(urlIdPerm1.Copy(), UrlIdentityPermission)
If Not (urlIdPerm2 Is Nothing) Then
Console.WriteLine("Result of copy = " & urlIdPerm2.ToString() & ControlChars.Lf)
Else
Console.WriteLine("Result of copy is null. " & ControlChars.Lf)
End If
Catch e As Exception
If (True.ToString()) Then
If url1 = "" Then
Console.WriteLine("The target UrlIdentityPermission is empty; copy failed.")
Else
Console.WriteLine(e.ToString())
End If
End If
GoTo ContinueWhile1
End Try
ContinueWhile1:
End While
Return returnValue
End Function 'CopyDemo
' ToXml creates an XML encoding of the permission and its current state; FromXml
' reconstructs a permission with the specified state from the XML encoding.
Private Function ToFromXmlDemo() As Boolean
Dim returnValue As Boolean = True
Dim url1 As String = ""
Dim urlIdPerm1, urlIdPerm2 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(url1)
urlIdPerm1 = New UrlIdentityPermission(url1)
Console.WriteLine("********************************************************\n")
urlGen2.ResetIndex()
Try
urlIdPerm2 = New UrlIdentityPermission(PermissionState.None)
urlIdPerm2.FromXml(urlIdPerm1.ToXml())
Console.WriteLine("Result of ToFromXml = " & urlIdPerm2.ToString())
Catch e As Exception
Console.WriteLine("ToFromXml failed :" & urlIdPerm1.ToString() & e.ToString())
GoTo ContinueWhile1
End Try
ContinueWhile1:
End While
Return returnValue
End Function 'ToFromXmlDemo
' Invoke all demos.
Public Function runDemo() As Boolean
Dim ret As Boolean = True
Dim retTmp As Boolean
' Call IsSubsetOf demo.
retTmp = IsSubsetOfDemo()
If retTmp Then
Console.Out.WriteLine("IsSubset demo completed successfully.")
Else
Console.Out.WriteLine("IsSubset demo failed.")
End If
ret = retTmp AndAlso ret
' Call Union demo.
retTmp = UnionDemo()
If retTmp Then
Console.Out.WriteLine("Union demo completed successfully.")
Else
Console.Out.WriteLine("Union demo failed.")
End If
ret = retTmp AndAlso ret
' Call Intersect demo.
retTmp = IntersectDemo()
If retTmp Then
Console.Out.WriteLine("Intersect demo completed successfully.")
Else
Console.Out.WriteLine("Intersect demo failed.")
End If
ret = retTmp AndAlso ret
' Call Copy demo.
retTmp = CopyDemo()
If retTmp Then
Console.Out.WriteLine("Copy demo completed successfully.")
Else
Console.Out.WriteLine("Copy demo failed.")
End If
ret = retTmp AndAlso ret
' Call ToFromXml demo.
retTmp = ToFromXmlDemo()
If retTmp Then
Console.Out.WriteLine("ToFromXml demo completed successfully.")
Else
Console.Out.WriteLine("ToFromXml demo failed.")
End If
ret = retTmp AndAlso ret
Return ret
End Function 'runDemo
' Test harness.
Public Overloads Shared Sub Main(ByVal args() As [String])
Try
Dim democase As New UrlIdentityPermissionDemo()
Dim ret As Boolean = democase.runDemo()
If ret Then
Console.Out.WriteLine("UrlIdentity demo completed successfully.")
Console.Out.WriteLine("Press the Enter key to exit.")
Dim consoleInput As String = Console.ReadLine()
System.Environment.ExitCode = 100
Else
Console.Out.WriteLine("UrlIdentity demo failed.")
Console.Out.WriteLine("Press the Enter key to exit.")
Dim consoleInput As String = Console.ReadLine()
System.Environment.ExitCode = 101
End If
Catch e As Exception
Console.Out.WriteLine("UrlIdentity demo failed.")
Console.WriteLine(e.ToString())
Console.Out.WriteLine("Press the Enter key to exit.")
Dim consoleInput As String = Console.ReadLine()
System.Environment.ExitCode = 101
End Try
End Sub 'Main
End Class 'UrlIdentityPermissionDemo
' This class generates UrlIdentityPermission objects.
Friend Class UrlGenerator
Private myUrl As String() = {"https://www.fourthcoffee.com/process/grind.htm", "https://www.fourthcoffee.com/process/*", "https://www.fourthcoffee.com/*", "https://www.fourthcoffee.com/process/*", "https://www.contoso.com/math.asmx"}
Private urlIndex As Integer = 0
Public Sub New()
ResetIndex()
End Sub 'New
Public Sub ResetIndex()
urlIndex = 0
End Sub 'ResetIndex
' CreateUrl creates a UrlIdentityPermission.
Public Function CreateUrl(ByRef url As String) As Boolean
If urlIndex = myUrl.Length Then
url = ""
urlIndex &= 1
Return True
End If
If urlIndex > myUrl.Length Then
url = ""
Return False
End If
url = myUrl(urlIndex)
urlIndex = urlIndex + 1
Return True
End Function 'CreateUrl
' End of UrlGenerator.
using System;
using System.Security;
using System.Security.Permissions;
public class UrlIdentityPermissionDemo
{
private bool IsSubsetOfDemo()
{
bool returnValue = true;
string url1, url2;
UrlIdentityPermission urlIdPerm1, urlIdPerm2;
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(out url1))
{
urlIdPerm1 = new UrlIdentityPermission(url1);
Console.WriteLine("********************************************************\n");
while (urlGen2.CreateUrl(out url2))
{
urlIdPerm2 = new UrlIdentityPermission(url2);
string firstPermission = url1 == "" | url1 == null ? "null" : url1;
string secondPermission = url2 == "" | url2 == null ? "null" : url2;
if (urlIdPerm2 == null) continue;
try
{
if (urlIdPerm1.IsSubsetOf(urlIdPerm2))
{
Console.WriteLine(firstPermission + "\n is a subset of "
+ secondPermission + "\n");
}
else
{
Console.WriteLine(firstPermission + "\n is not a subset of "
+ secondPermission + "\n");
}
}
catch (Exception e)
{
Console.WriteLine("An exception was thrown for subset :"
+ url1 == "" ? "null." : url1 + "\n" + url2 == "" ? "null." : url2 + "\n" + e);
}
}
}
return returnValue;
}
// Union creates a new permission that is the union of the current permission and
// the specified permission.
private bool UnionDemo()
{
bool returnValue = true;
string url1, url2;
UrlIdentityPermission urlIdPerm1, urlIdPerm2;
IPermission urlIdPerm3;
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(out url1))
{
urlIdPerm1 = new UrlIdentityPermission(url1);
Console.WriteLine("**********************************************************\n");
urlGen2.ResetIndex();
while (urlGen2.CreateUrl(out url2))
{
try
{
urlIdPerm2 = new UrlIdentityPermission(url2);
string firstPermission = url1 == "" | url1 == null ? "null" : url1;
string secondPermission = url2 == "" | url2 == null ? "null" : url2;
urlIdPerm3 = (UrlIdentityPermission)urlIdPerm1.Union(urlIdPerm2);
urlIdPerm3 = urlIdPerm1.Union(urlIdPerm2);
if (urlIdPerm3 == null)
{
Console.WriteLine("The union of " + firstPermission
+ " and \n\t" + secondPermission + " is null.");
}
else
{
Console.WriteLine("The union of " + firstPermission + " and \n\t"
+ secondPermission +
" = \n\t" + ((UrlIdentityPermission)urlIdPerm3).Url.ToString());
}
}
catch (Exception e)
{ //Expected exception.
Console.WriteLine("An exception was thrown for union :" + e.Message);
}
}
}
return returnValue;
}
// Intersect creates and returns a new permission that is the intersection of the
// current permission and the permission specified.
private bool IntersectDemo()
{
bool returnValue = true;
string url1, url2;
UrlIdentityPermission urlIdPerm1, urlIdPerm2, urlIdPerm3;
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(out url1))
{
urlIdPerm1 = new UrlIdentityPermission(url1);
Console.WriteLine("**********************************************************\n");
urlGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
while (urlGen2.CreateUrl(out url2))
{
urlIdPerm2 = new UrlIdentityPermission(url2);
string firstPermission = url1 == "" | url1 == null ? "null" : url1;
string secondPermission = url2 == "" | url2 == null ? "null" : url2;
try
{
urlIdPerm3 = (UrlIdentityPermission)urlIdPerm1.Intersect(urlIdPerm2);
if (urlIdPerm3 != null && urlIdPerm3.Url != null)
{
Console.WriteLine("The intersection of " + firstPermission
+ " and \n\t" + secondPermission +
" = \n\t" + ((UrlIdentityPermission)urlIdPerm3).Url.ToString());
}
else
{
Console.WriteLine("The intersection of " + firstPermission + " and \n\t"
+ secondPermission + " is null. ");
}
}
catch (Exception e)
{
Console.WriteLine("An exception was thrown for the intersection : " + e);
returnValue = false;
}
}
}
return returnValue;
}
//Copy creates and returns an identical copy of the current permission.
private bool CopyDemo()
{
bool returnValue = true;
string url1;
UrlIdentityPermission urlIdPerm1, urlIdPerm2;
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(out url1))
{
urlIdPerm1 = new UrlIdentityPermission(url1);
urlGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
try
{
urlIdPerm2 = (UrlIdentityPermission)urlIdPerm1.Copy();
if (urlIdPerm2 != null)
{
Console.WriteLine("Result of copy = " + urlIdPerm2.ToString() + "\n");
}
else
{
Console.WriteLine("Result of copy is null. \n");
}
}
catch (Exception e)
{
{
if (url1 == "")
{
Console.WriteLine("The target UrlIdentityPermission is empty; copy failed.");
}
else
Console.WriteLine(e);
}
continue;
}
}
return returnValue;
}
// ToXml creates an XML encoding of the permission and its current state; FromXml
// reconstructs a permission with the specified state from the XML encoding.
private bool ToFromXmlDemo()
{
bool returnValue = true;
string url1;
UrlIdentityPermission urlIdPerm1, urlIdPerm2;
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(out url1))
{
urlIdPerm1 = new UrlIdentityPermission(url1);
Console.WriteLine("********************************************************\n");
urlGen2.ResetIndex();
try
{
urlIdPerm2 = new UrlIdentityPermission(PermissionState.None);
urlIdPerm2.FromXml(urlIdPerm1.ToXml());
Console.WriteLine("Result of ToFromXml = " + urlIdPerm2.ToString() + "\n");
}
catch (Exception e)
{
Console.WriteLine("ToFromXml failed :" + urlIdPerm1.ToString() + e);
continue;
}
}
return returnValue;
}
// Invoke all demos.
public bool runDemo()
{
bool ret = true;
bool retTmp;
// Call IsSubsetOf demo.
retTmp = IsSubsetOfDemo();
if (retTmp) Console.Out.WriteLine("IsSubset demo completed successfully.");
else Console.Out.WriteLine("IsSubset demo failed.");
ret = retTmp && ret;
// Call Union demo.
retTmp = UnionDemo();
if (retTmp) Console.Out.WriteLine("Union demo completed successfully.");
else Console.Out.WriteLine("Union demo failed.");
ret = retTmp && ret;
// Call Intersect demo.
retTmp = IntersectDemo();
if (retTmp) Console.Out.WriteLine("Intersect demo completed successfully.");
else Console.Out.WriteLine("Intersect demo failed.");
ret = retTmp && ret;
// Call Copy demo.
retTmp = CopyDemo();
if (retTmp) Console.Out.WriteLine("Copy demo completed successfully.");
else Console.Out.WriteLine("Copy demo failed.");
ret = retTmp && ret;
// Call ToFromXml demo.
retTmp = ToFromXmlDemo();
if (retTmp) Console.Out.WriteLine("ToFromXml demo completed successfully.");
else Console.Out.WriteLine("ToFromXml demo failed.");
ret = retTmp && ret;
return (ret);
}
// Test harness.
public static void Main(String[] args)
{
try
{
UrlIdentityPermissionDemo democase = new UrlIdentityPermissionDemo();
bool ret = democase.runDemo();
if (ret)
{
Console.Out.WriteLine("UrlIdentity demo completed successfully.");
Console.Out.WriteLine("Press the Enter key to exit.");
string consoleInput = Console.ReadLine();
System.Environment.ExitCode = 100;
}
else
{
Console.Out.WriteLine("UrlIdentity demo failed.");
Console.Out.WriteLine("Press the Enter key to exit.");
string consoleInput = Console.ReadLine();
System.Environment.ExitCode = 101;
}
}
catch (Exception e)
{
Console.Out.WriteLine("UrlIdentity demo failed.");
Console.WriteLine(e.ToString());
Console.Out.WriteLine("Press the Enter key to exit.");
string consoleInput = Console.ReadLine();
System.Environment.ExitCode = 101;
}
}
}
// This class generates UrlIdentityPermission objects.
internal class UrlGenerator
{
private string[] myUrl =
{
"https://www.fourthcoffee.com/process/grind.htm","https://www.fourthcoffee.com/process/*",
"https://www.fourthcoffee.com/*","https://www.fourthcoffee.com/process/*","https://www.contoso.com/math.asmx"};
private int urlIndex = 0;
public UrlGenerator()
{
ResetIndex();
}
public void ResetIndex()
{
urlIndex = 0;
}
// CreateUrl creates a UrlIdentityPermission.
public bool CreateUrl(out string url)
{
if (urlIndex == myUrl.Length)
{
url = "";
urlIndex++;
return true;
}
if (urlIndex > myUrl.Length)
{
url = "";
return false;
}
url = myUrl[urlIndex++];
return true;
}
} // End of UrlGenerator.
// This sample demonstrates the IsSubsetOf, Union, Intersect,
// Copy, ToXml and FromXml methods
// of the UrlIdentityPermission class.
import System.*;
import System.Security.*;
import System.Security.Permissions.*;
/** @assembly CLSCompliant(true)
*/
public class UrlIdentityPermissionDemo
{
// IsSubsetOf determines whether the current permission is a
// subset of the specified permission.
private boolean IsSubsetOfDemo()
{
boolean returnValue = true;
String url1[] = new String[1];
String url2[] = new String[1];
UrlIdentityPermission urlIdPerm1[] = new UrlIdentityPermission[1];
UrlIdentityPermission urlIdPerm2[] = new UrlIdentityPermission[1];
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(urlIdPerm1, url1)) {
if (urlIdPerm1 == null) {
continue;
}
urlGen2.ResetIndex();
Console.WriteLine("******************************************"
+ "**************\n");
while (urlGen2.CreateUrl(urlIdPerm2, url2)) {
System.String firstPermission = (url1[0].Equals("")
|| url1[0] == null) ? "null" : url1[0];
System.String secondPermission = (url2[0].Equals("")
|| url2[0] == null) ? "null" : url2[0];
if (urlIdPerm2 == null) {
continue;
}
try {
if (urlIdPerm1[0].IsSubsetOf(urlIdPerm2[0])) {
Console.WriteLine((firstPermission
+ "\n is a subset of " + secondPermission + "\n"));
}
else {
Console.WriteLine((firstPermission
+ "\n is not a subset of " + secondPermission
+ "\n"));
}
}
catch (System.Exception e) {
Console.WriteLine(("An exception was thrown for subset :"
+ url1 == "") ? "null." : (url1 + "\n"
+ url2 == "") ? "null." : url2 + "\n" + e);
}
}
}
return returnValue;
} //IsSubsetOfDemo
// Union creates a new permission that is the union
// of the current permission and
// the specified permission.
private boolean UnionDemo()
{
boolean returnValue = true;
String url1[] = new String[1];
String url2[] = new String[1];
UrlIdentityPermission urlIdPerm1[] = new UrlIdentityPermission[1];
UrlIdentityPermission urlIdPerm2[] = new UrlIdentityPermission[1];
IPermission urlIdPerm3;
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(urlIdPerm1, url1)) {
if (urlIdPerm1 == null) {
continue;
}
Console.WriteLine("******************************************"
+ "****************\n");
urlGen2.ResetIndex();
while (urlGen2.CreateUrl(urlIdPerm2, url2)) {
try {
if (urlIdPerm2 == null) {
continue;
}
String firstPermission = (url1[0] == ""
|| url1[0] == null) ? "null" : url1[0];
String secondPermission = (url2[0] == ""
|| url2[0] == null) ? "null" : url2[0];
urlIdPerm3 = ((UrlIdentityPermission)(urlIdPerm1[0].
Union(urlIdPerm2[0])));
urlIdPerm3 = urlIdPerm1[0].Union(urlIdPerm2[0]);
if (urlIdPerm3 == null) {
Console.WriteLine(("The union of " + firstPermission
+ " and \n\t" + secondPermission + " is null."));
}
else {
Console.WriteLine(("The union of " + firstPermission
+ " and \n\t" + secondPermission + " = \n\t"
+ ((UrlIdentityPermission)(urlIdPerm3)).
get_Url().ToString()));
}
}
catch (System.Exception e) {
Console.WriteLine(("An exception was thrown for union :"
+ e));
returnValue = false;
}
}
}
return returnValue;
} //UnionDemo
// Intersect creates and returns a new permission that is
// the intersection of the
// current permission and the permission specified.
private boolean IntersectDemo()
{
boolean returnValue = true;
String url1[] = new String[1];
String url2[] = new String[1];
UrlIdentityPermission urlIdPerm1[] = new UrlIdentityPermission[1];
UrlIdentityPermission urlIdPerm2[] = new UrlIdentityPermission[1];
UrlIdentityPermission urlIdPerm3[] = new UrlIdentityPermission[1];
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(urlIdPerm1, url1)) {
if (urlIdPerm1 == null) {
continue;
}
Console.WriteLine("***************************************"
+ "*******************\n");
urlGen2.ResetIndex();
Console.WriteLine("****************************************"
+ "****************\n");
while (urlGen2.CreateUrl(urlIdPerm2, url2)) {
if (urlIdPerm2 == null) {
continue;
}
String firstPermission = (url1[0] == ""
|| url1[0] == null) ? "null" : url1[0];
String secondPermission = (url2[0] == ""
|| url2[0] == null) ? "null" : url2[0];
try {
urlIdPerm3[0] = ((UrlIdentityPermission)(urlIdPerm1[0].
Intersect(urlIdPerm2[0])));
if (urlIdPerm3[0] != null && urlIdPerm3[0].
get_Url() != null) {
Console.WriteLine(("The intersection of "
+ firstPermission + " and \n\t" + secondPermission
+ " = \n\t"
+ ((UrlIdentityPermission)(urlIdPerm3[0])).
get_Url().ToString()));
}
else {
Console.WriteLine(("The intersection of "
+ firstPermission + " and \n\t"
+ secondPermission + " is nu //IntersectDemoll. "));
}
}
catch (System.Exception e) {
Console.WriteLine(("An exception was thrown "
+ "for the intersection : " + e));
returnValue = false;
}
}
}
return returnValue;
} //IntersectDemo
//Copy creates and returns an identical copy of the current permission.
private boolean CopyDemo()
{
boolean returnValue = true;
String url1[] = new String[1];
UrlIdentityPermission urlIdPerm1[] = new UrlIdentityPermission[1];
UrlIdentityPermission urlIdPerm2[] = new UrlIdentityPermission[1];
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(urlIdPerm1, url1)) {
if (urlIdPerm1 == null) {
continue;
}
urlGen2.ResetIndex();
Console.WriteLine("**********************************************"
+ "**********\n");
try {
urlIdPerm2[0] = ((UrlIdentityPermission)(urlIdPerm1[0].Copy()));
if (urlIdPerm2 != null) {
Console.WriteLine(("Result of copy = " + urlIdPerm2[0].
ToString() + "\n"));
}
else {
Console.WriteLine("Result of copy is null. \n");
}
}
catch (System.Exception e) {
{
if (url1[0].Equals("")) {
Console.WriteLine("The target UrlIdentityPermission"
+ " is empty; copy failed.");
}
else {
Console.WriteLine(e);
}
}
continue;
}
}
return returnValue;
} //CopyDemo
// ToXml creates an XML encoding of the permission and
// its current state; FromXml
// reconstructs a permission with the specified state from
// the XML encoding.
private boolean ToFromXmlDemo()
{
boolean returnValue = true;
String url1[] = new String[1];
UrlIdentityPermission urlIdPerm1[] = new UrlIdentityPermission[1];
UrlIdentityPermission urlIdPerm2[] = new UrlIdentityPermission[1];
UrlGenerator urlGen1 = new UrlGenerator();
UrlGenerator urlGen2 = new UrlGenerator();
urlGen1.ResetIndex();
while (urlGen1.CreateUrl(urlIdPerm1, url1)) {
if (urlIdPerm1 == null) {
continue;
}
Console.WriteLine("********************************************"
+ "************\n");
urlGen2.ResetIndex();
try {
urlIdPerm2[0] = new UrlIdentityPermission(PermissionState.None);
urlIdPerm2[0].FromXml(urlIdPerm1[0].ToXml());
Console.WriteLine(("Result of ToFromXml = "
+ urlIdPerm2[0].ToString() + "\n"));
}
catch (System.Exception e) {
Console.WriteLine(("ToFromXml failed :"
+ urlIdPerm1.ToString() + e));
continue;
}
}
return returnValue;
} //ToFromXmlDemo
// Invoke all demos.
public boolean runDemo()
{
boolean ret = true;
boolean retTmp;
// Call IsSubsetOf demo.
retTmp = IsSubsetOfDemo();
if (retTmp) {
Console.get_Out().WriteLine("IsSubset demo completed "
+ "successfully.");
}
else {
Console.get_Out().WriteLine("IsSubset demo failed.");
}
ret = retTmp && ret;
// Call Union demo.
retTmp = UnionDemo();
if (retTmp) {
Console.get_Out().WriteLine("Union demo completed successfully.");
}
else {
Console.get_Out().WriteLine("Union demo failed.");
}
ret = retTmp && ret;
// Call Intersect demo.
retTmp = IntersectDemo();
if (retTmp) {
Console.get_Out().WriteLine("Intersect demo completed "
+ "successfully.");
}
else {
Console.get_Out().WriteLine("Intersect demo failed.");
}
ret = retTmp && ret;
// Call Copy demo.
retTmp = CopyDemo();
if (retTmp) {
Console.get_Out().WriteLine("Copy demo completed successfully.");
}
else {
Console.get_Out().WriteLine("Copy demo failed.");
}
ret = retTmp && ret;
// Call ToFromXml demo.
retTmp = ToFromXmlDemo();
if (retTmp) {
Console.get_Out().WriteLine("ToFromXml demo "
+ "completed successfully.");
}
else {
Console.get_Out().WriteLine("ToFromXml demo failed.");
}
ret = retTmp && ret;
return ret;
} //runDemo
// Test harness.
public static void main(String[] args)
{
try {
UrlIdentityPermissionDemo democase = new
UrlIdentityPermissionDemo();
boolean ret = democase.runDemo();
if (ret) {
Console.get_Out().WriteLine("UrlIdentity demo completed"
+ " successfully.");
Console.get_Out().WriteLine("Press the Enter key to exit.");
String consoleInput = Console.ReadLine();
Environment.set_ExitCode(100);
}
else {
Console.get_Out().WriteLine("UrlIdentity demo failed.");
Console.get_Out().WriteLine("Press the Enter key to exit.");
String consoleInput = Console.ReadLine();
Environment.set_ExitCode(101);
}
}
catch (System.Exception e) {
Console.get_Out().WriteLine("UrlIdentity demo failed.");
Console.WriteLine(e.ToString());
Console.get_Out().WriteLine("Press the Enter key to exit.");
String consoleInput = Console.ReadLine();
Environment.set_ExitCode(101);
}
} //main
} //UrlIdentityPermissionDemo
// This class generates UrlIdentityPermission objects.
class UrlGenerator
{
private String myUrl[] = {
"https://www.fourthcoffee.com/process/grind.htm",
"https://www.fourthcoffee.com/process/*",
"https://www.fourthcoffee.com/*",
"https://www.fourthcoffee.com/process/*",
"https://www.contoso.com/math.asmx"};
private int urlIndex = 0;
public UrlGenerator()
{
ResetIndex();
} //UrlGenerator
public void ResetIndex()
{
urlIndex = 0;
} //ResetIndex
// CreateUrl creates a UrlIdentityPermission.
public boolean CreateUrl(UrlIdentityPermission urlPerm[], String url[])
{
UrlIdentityPermission urlP = null;
if (urlIndex == myUrl.length) {
urlPerm[0] = new UrlIdentityPermission(PermissionState.None);
url[0] = "";
urlIndex++;
return true;
}
if (urlIndex > myUrl.length) {
urlPerm = null;
url[0] = "";
return false;
}
url[0] = myUrl[urlIndex++];
try {
urlP = new UrlIdentityPermission(url[0]);
urlPerm[0] = urlP;
return true;
}
catch (System.Exception e) {
Console.WriteLine(("Cannot create UrlIdentityPermission : "
+ url + " " + e));
urlPerm[0] = new UrlIdentityPermission(PermissionState.None);
url[0] = "";
return true;
}
} //CreateUrl
} //UrlGenerator
Vererbungshierarchie
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.UrlIdentityPermission
Threadsicherheit
Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.
Plattformen
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
Siehe auch
Referenz
UrlIdentityPermission-Member
System.Security.Permissions-Namespace
UrlIdentityPermissionAttribute
Url
UrlMembershipCondition