UrlIdentityPermission クラス
コードのダウンロード元の URL に対して ID アクセス許可を定義します。このクラスは継承できません。
この型のすべてのメンバの一覧については、UrlIdentityPermission メンバ を参照してください。
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.UrlIdentityPermission
<Serializable>
NotInheritable Public Class UrlIdentityPermission Inherits CodeAccessPermission
[C#]
[Serializable]
public sealed class UrlIdentityPermission : CodeAccessPermission
[C++]
[Serializable]
public __gc __sealed class UrlIdentityPermission : public CodeAccessPermission
[JScript]
public
Serializable
class UrlIdentityPermission extends CodeAccessPermission
スレッドセーフ
この型の public static (Visual Basicでは Shared) のすべてのメンバは、マルチスレッド操作で安全に使用できます。インスタンスのメンバの場合は、スレッドセーフであるとは限りません。
解説
プロトコル (HTTP、HTTPS、FTP) やファイル名を含む完全な URL が想定されます。たとえば、https://www.fourthcoffee.com/process/grind.htm は完全な URL です。
URL には、完全に一致する文字列、または最終位置にワイルドカードを使用した文字列 (https://www.fourthcoffee.com/process/\* など) を使用できます。
注意 UrlIdentityPermission は、URL と IP アドレスを含め、ファイルへのすべてのパスに対するアクセス許可を与えます。ファイルへのアクセスを Deny によって拒否するには、そのファイルへの有効なパスをすべて Deny によって拒否する必要があります。たとえば、www.forthcoffee.com の IP アドレスが 192.168.238.241 の場合、http://www.forthcoffee.com/process/grind.htm へのアクセスを Deny によって拒否するには、http://www.forthcoffee.com/process/grind.htm、192.168.238.241/grind.htm を含め、そのコードにアクセスために使用できるすべてのパスを Deny によって拒否する必要があります。ただし、URL のパスはきわめて多くの方法によって表記できるため、 Deny だけを使用してすべてのパスをブロックすることはきわめて困難です。複数パスの問題に対処するには、 PermitOnly と Deny を組み合わせることをお勧めします。 PermitOnly を使用すると、アクセスを許可する特定の URL のセットを指定でき、その上で Deny を使用すると、この中からアクセスを拒否するアドレスを明示的に指定できます。この詳細および Deny で PermitOnly を使用する場合の詳細については、「 Deny 」の Canonicalization Problems Using Deny を参照してください。
使用例
' This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods
' of the UrlIdentityPermission class.
Imports System
Imports System.Security
Imports System.Security.Permissions
Imports Microsoft.VisualBasic
<Assembly: CLSCompliant(True)>
Public Class UrlIdentityPermissionDemo
' IsSubsetOf determines whether the current permission is a subset of the specified permission.
Private Function IsSubsetOfDemo() As Boolean
Dim returnValue As Boolean = True
Dim url1, url2 As String
Dim urlIdPerm1, urlIdPerm2 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(urlIdPerm1, url1)
If urlIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
urlGen2.ResetIndex()
Console.WriteLine("********************************************************\n")
While urlGen2.CreateUrl(urlIdPerm2, 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, 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(urlIdPerm1, url1)
If urlIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
Console.WriteLine("**********************************************************" & ControlChars.Lf)
urlGen2.ResetIndex()
While urlGen2.CreateUrl(urlIdPerm2, url2)
Try
If urlIdPerm2 Is Nothing Then
GoTo ContinueWhile2
End If
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
Console.WriteLine("An exception was thrown for union :" & e.ToString())
returnValue = False
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, url2 As String
Dim urlIdPerm1, urlIdPerm2, urlIdPerm3 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(urlIdPerm1, url1)
If urlIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
Console.WriteLine("**********************************************************" & ControlChars.Lf)
urlGen2.ResetIndex()
Console.WriteLine("********************************************************\n")
While urlGen2.CreateUrl(urlIdPerm2, url2)
If urlIdPerm2 Is Nothing Then
GoTo ContinueWhile2
End If
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 urlIdPerm1, urlIdPerm2 As UrlIdentityPermission
Dim urlGen1 As New UrlGenerator()
Dim urlGen2 As New UrlGenerator()
urlGen1.ResetIndex()
While urlGen1.CreateUrl(urlIdPerm1, url1)
If urlIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
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(urlIdPerm1, url1)
If urlIdPerm1 Is Nothing Then
GoTo ContinueWhile1
End If
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 urlPerm As UrlIdentityPermission, ByRef url As String) As Boolean
If urlIndex = myUrl.Length Then
urlPerm = New UrlIdentityPermission(PermissionState.None)
url = ""
urlIndex &= 1
Return True
End If
If urlIndex > myUrl.Length Then
urlPerm = Nothing
url = ""
Return False
End If
url = myUrl(urlIndex)
urlIndex = urlIndex + 1
Try
urlPerm = New UrlIdentityPermission(url)
Return True
Catch e As Exception
Console.WriteLine("Cannot create UrlIdentityPermission : " & url & " " & e.ToString())
urlPerm = New UrlIdentityPermission(PermissionState.None)
url = ""
Return True
End Try
End Function 'CreateUrl
' End of UrlGenerator.
[C#]
// This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods
// of the UrlIdentityPermission class.
using System;
using System.Security;
using System.Security.Permissions;
[assembly:CLSCompliant(true)]
public class UrlIdentityPermissionDemo
{
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
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 urlIdPerm1, out url1))
{
if(urlIdPerm1 == null) continue;
urlGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
while(urlGen2.CreateUrl(out urlIdPerm2, out 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 urlIdPerm1, out url1))
{
if(urlIdPerm1 == null) continue;
Console.WriteLine("**********************************************************\n");
urlGen2.ResetIndex();
while(urlGen2.CreateUrl(out urlIdPerm2, out url2))
{
try
{
if(urlIdPerm2 == null) continue;
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)
{
Console.WriteLine("An exception was thrown for union :" + e);
returnValue=false;
}
}
}
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 urlIdPerm1, out url1))
{
if(urlIdPerm1 == null) continue;
Console.WriteLine("**********************************************************\n");
urlGen2.ResetIndex();
Console.WriteLine("********************************************************\n");
while(urlGen2.CreateUrl(out urlIdPerm2, out url2))
{
if(urlIdPerm2 == null) continue;
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 urlIdPerm1, out url1))
{
if(urlIdPerm1 == null ) continue;
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 urlIdPerm1, out url1))
{
if(urlIdPerm1 == null) continue;
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 UrlIdentityPermission urlPerm, out string url)
{
if(urlIndex == myUrl.Length)
{
urlPerm = new UrlIdentityPermission(PermissionState.None);
url="";
urlIndex++;
return true;
}
if(urlIndex > myUrl.Length)
{
urlPerm = null;
url = "";
return false;
}
url = myUrl[urlIndex++];
try
{
urlPerm = new UrlIdentityPermission(url);
return true;
}
catch(Exception e)
{
Console.WriteLine("Cannot create UrlIdentityPermission : " + url +" "+e);
urlPerm = new UrlIdentityPermission(PermissionState.None);
url="";
return true;
}
}
} // End of UrlGenerator.
[C++]
// This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods
// of the UrlIdentityPermission class.
#using <mscorlib.dll>
using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;
using namespace System::Runtime::InteropServices;
[assembly:CLSCompliant(true)];
// This class generates UrlIdentityPermission objects.
private __gc class UrlGenerator {
private:
String* myUrl[];
private:
int urlIndex;
public:
UrlGenerator() {
String* temp0 [] = {
S"https://www.fourthcoffee.com/process/grind.htm",
S"https://www.fourthcoffee.com/process/*",
S"https://www.fourthcoffee.com/*",
S"https://www.fourthcoffee.com/process/*",
S"https://www.contoso.com/math.asmx"
};
myUrl = temp0;
ResetIndex();
}
public:
void ResetIndex() {
urlIndex = 0;
}
// CreateUrl creates a UrlIdentityPermission.
public:
bool CreateUrl([Out] UrlIdentityPermission** urlPerm, [Out] String** url) {
if (urlIndex == myUrl->Length) {
*urlPerm = new UrlIdentityPermission(PermissionState::None);
*url=S"";
urlIndex++;
return true;
}
if (urlIndex > myUrl->Length) {
*urlPerm = 0;
*url = S"";
return false;
}
*url = myUrl[urlIndex++];
try {
*urlPerm = new UrlIdentityPermission(*url);
return true;
} catch (Exception* e) {
Console::WriteLine(S"Cannot create UrlIdentityPermission : {0} {1}", *url, e);
*urlPerm = new UrlIdentityPermission(PermissionState::None);
*url=S"";
return false;
}
}
}; // End of UrlGenerator.
public __gc class UrlIdentityPermissionDemo {
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
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(&urlIdPerm1, &url1)) {
if (urlIdPerm1 == 0) continue;
urlGen2->ResetIndex();
Console::WriteLine(S"********************************************************\n");
while(urlGen2->CreateUrl(&urlIdPerm2, &url2)) {
String* firstPermission = url1->Equals(S"") || url1 == 0 ? S"null" : url1 ;
String* secondPermission = url2->Equals(S"") || url2 == 0 ? S"null" : url2;
if (urlIdPerm2 == 0) continue;
try {
if (urlIdPerm1->IsSubsetOf(urlIdPerm2)) {
Console::WriteLine(S"{0}\n is a subset of {1}\n",
firstPermission, secondPermission);
} else {
Console::WriteLine(S"{0}\n is not a subset of {1}\n",
firstPermission, secondPermission);
}
} catch (Exception* e) {
Console::WriteLine(S"An exception was thrown for subset : {0}\n{1}\n{2}",
url1->Equals(S"") ? S"0." : url1, url2->Equals(S"") ? S"0." : url2, 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(&urlIdPerm1, &url1)) {
if (urlIdPerm1 == 0) continue;
Console::WriteLine(S"**********************************************************\n");
urlGen2->ResetIndex();
while(urlGen2->CreateUrl(&urlIdPerm2, &url2)) {
try {
if (urlIdPerm2 == 0) continue;
String* firstPermission = url1->Equals(S"") || url1 == 0 ? S"null" : url1 ;
String* secondPermission = url2->Equals(S"") || url2 == 0 ? S"null" : url2;
urlIdPerm3 = dynamic_cast<UrlIdentityPermission*>(urlIdPerm1->Union(urlIdPerm2));
urlIdPerm3 = urlIdPerm1->Union(urlIdPerm2);
if (urlIdPerm3 == 0) {
Console::WriteLine(S"The union of {0} and \n\t{1} is null.",
firstPermission,
secondPermission);
} else {
Console::WriteLine(S"The union of {0} and \n\t{1} = \n\t{2}",
firstPermission,
secondPermission,
(dynamic_cast<UrlIdentityPermission*>(urlIdPerm3))->Url);
}
} catch (Exception* e) {
Console::WriteLine(S"An exception was thrown for union : {0}", e);
returnValue=false;
}
}
}
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(&urlIdPerm1, &url1)) {
if (urlIdPerm1 == 0) continue;
Console::WriteLine(S"**********************************************************\n");
urlGen2->ResetIndex();
Console::WriteLine(S"********************************************************\n");
while(urlGen2->CreateUrl(&urlIdPerm2, &url2)) {
if (urlIdPerm2 == 0) continue;
String* firstPermission = url1->Equals(S"") || url1 == 0 ? S"null" : url1 ;
String* secondPermission = url2->Equals(S"") || url2 == 0 ? S"null" : url2;
try {
urlIdPerm3 = dynamic_cast<UrlIdentityPermission*>(urlIdPerm1->Intersect(urlIdPerm2));
if (urlIdPerm3 != 0 && urlIdPerm3->Url != 0) {
Console::WriteLine(S"The intersection of {0} and \n\t{1} = \n\t{2}",
firstPermission,
secondPermission,
(dynamic_cast<UrlIdentityPermission*>(urlIdPerm3))->Url);
} else {
Console::WriteLine(S"The intersection of {0} and \n\t{1} is null. ",
firstPermission,
secondPermission);
}
} catch (Exception* e) {
Console::WriteLine(S"An exception was thrown for the intersection : {0}", 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(&urlIdPerm1, &url1)) {
if (urlIdPerm1 == 0) continue;
urlGen2->ResetIndex();
Console::WriteLine(S"********************************************************\n");
try {
urlIdPerm2 = dynamic_cast<UrlIdentityPermission*>(urlIdPerm1->Copy());
if (urlIdPerm2 != 0) {
Console::WriteLine(S"Result of copy = {0}\n", urlIdPerm2);
} else {
Console::WriteLine(S"Result of copy is null. \n");
}
} catch (Exception* e) { {
if (url1->Equals(S"")) {
Console::WriteLine(S"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(&urlIdPerm1, &url1)) {
if (urlIdPerm1 == 0) continue;
Console::WriteLine(S"********************************************************\n");
urlGen2->ResetIndex();
try {
urlIdPerm2 = new UrlIdentityPermission(PermissionState::None);
urlIdPerm2->FromXml(urlIdPerm1->ToXml());
Console::WriteLine(S"Result of ToFromXml = {0}\n", urlIdPerm2);
} catch (Exception* e) {
Console::WriteLine(S"ToFromXml failed : {0}{1}", urlIdPerm1, e);
continue;
}
}
return returnValue;
}
// Invoke all demos.
public:
bool runDemo() {
bool ret=true;
bool retTmp;
// Call IsSubsetOf demo.
retTmp= IsSubsetOfDemo();
if (retTmp)
Console::WriteLine(S"IsSubset demo completed successfully.");
else
Console::WriteLine(S"IsSubset demo failed.");
ret=retTmp && ret;
// Call Union demo.
retTmp= UnionDemo();
if (retTmp)
Console::WriteLine(S"Union demo completed successfully.");
else
Console::WriteLine(S"Union demo failed.");
ret=retTmp && ret;
// Call Intersect demo.
retTmp= IntersectDemo();
if (retTmp)
Console::WriteLine(S"Intersect demo completed successfully.");
else
Console::WriteLine(S"Intersect demo failed.");
ret=retTmp && ret;
// Call Copy demo.
retTmp= CopyDemo();
if (retTmp)
Console::WriteLine(S"Copy demo completed successfully.");
else
Console::WriteLine(S"Copy demo failed.");
ret=retTmp && ret;
// Call ToFromXml demo.
retTmp= ToFromXmlDemo();
if (retTmp)
Console::WriteLine(S"ToFromXml demo completed successfully.");
else
Console::WriteLine(S"ToFromXml demo failed.");
ret=retTmp && ret;
return (ret);
}
};
// Test harness.
int main() {
try {
UrlIdentityPermissionDemo* democase = new UrlIdentityPermissionDemo();
bool ret = democase->runDemo();
if (ret) {
Console::WriteLine(S"UrlIdentity demo completed successfully.");
Console::WriteLine(S"Press the Enter key to exit.");
Console::ReadLine();
System::Environment::ExitCode = 100;
} else {
Console::WriteLine(S"UrlIdentity demo failed.");
Console::WriteLine(S"Press the Enter key to exit.");
Console::ReadLine();
System::Environment::ExitCode = 101;
}
} catch (Exception* e) {
Console::WriteLine(S"UrlIdentity demo failed.");
Console::WriteLine(e);
Console::WriteLine(S"Press the Enter key to exit.");
Console::ReadLine();
System::Environment::ExitCode = 101;
}
}
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必要条件
名前空間: System.Security.Permissions
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
アセンブリ: Mscorlib (Mscorlib.dll 内)
参照
UrlIdentityPermission メンバ | System.Security.Permissions 名前空間 | アクセス許可 | アクセス許可の要求 | UrlIdentityPermissionAttribute | Url | UrlMembershipCondition