WebPermission Classe

Definizione

public ref class WebPermission sealed : System::Security::CodeAccessPermission, System::Security::Permissions::IUnrestrictedPermission

[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class WebPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission

[System.Serializable]
public sealed class WebPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission

public sealed class WebPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission

[<System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type WebPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission

[<System.Serializable>]
type WebPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission

type WebPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission

Public NotInheritable Class WebPermission
Inherits CodeAccessPermission
Implements IUnrestrictedPermission

Ereditarietà

Object

CodeAccessPermission

WebPermission

Attributi

ObsoleteAttribute SerializableAttribute

Implementazioni

IUnrestrictedPermission

Esempio

Nell'esempio seguente viene illustrato come creare una nuova istanza di WebPermission usando un oggetto Regex. Altri host vengono aggiunti alla connessione e accettano l'elenco di WebPermission. Infine, l'elenco di connessione e accettazione viene visualizzato nella console.

//  Create a Regex that accepts all URLs containing the host fragment www.contoso.com.
Regex^ myRegex = gcnew Regex( "http://www\\.contoso\\.com/.*" );

// Create a WebPermission that gives permissions to all the hosts containing the same host fragment.
WebPermission^ myWebPermission = gcnew WebPermission( NetworkAccess::Connect,myRegex );

//Add connect privileges for a www.adventure-works.com.
myWebPermission->AddPermission( NetworkAccess::Connect, "http://www.adventure-works.com" );

//Add accept privileges for www.alpineskihouse.com.
myWebPermission->AddPermission( NetworkAccess::Accept, "http://www.alpineskihouse.com/" );

// Check whether all callers higher in the call stack have been granted the permission.
myWebPermission->Demand();

// Get all the URIs with Connect permission.
IEnumerator^ myConnectEnum = myWebPermission->ConnectList;
Console::WriteLine( "\nThe 'URIs' with 'Connect' permission are :\n" );
while ( myConnectEnum->MoveNext() )
{
   Console::WriteLine( "\t{0}", myConnectEnum->Current );
}

// Get all the URIs with Accept permission.   
IEnumerator^ myAcceptEnum = myWebPermission->AcceptList;
Console::WriteLine( "\n\nThe 'URIs' with 'Accept' permission is :\n" );

while ( myAcceptEnum->MoveNext() )
{
   Console::WriteLine( "\t{0}", myAcceptEnum->Current );
}

   //  Create a Regex that accepts all URLs containing the host fragment www.contoso.com.
   Regex myRegex = new Regex(@"http://www\.contoso\.com/.*");

   // Create a WebPermission that gives permissions to all the hosts containing the same host fragment.
   WebPermission myWebPermission = new WebPermission(NetworkAccess.Connect,myRegex);
   
   //Add connect privileges for a www.adventure-works.com.
   myWebPermission.AddPermission(NetworkAccess.Connect,"http://www.adventure-works.com");
   
   //Add accept privileges for www.alpineskihouse.com.
   myWebPermission.AddPermission(NetworkAccess.Accept, "http://www.alpineskihouse.com/");
   
   // Check whether all callers higher in the call stack have been granted the permission.
   myWebPermission.Demand();
   
   // Get all the URIs with Connect permission.
   IEnumerator myConnectEnum = myWebPermission.ConnectList;
   Console.WriteLine("\nThe 'URIs' with 'Connect' permission are :\n");
   while (myConnectEnum.MoveNext())
   {Console.WriteLine("\t" + myConnectEnum.Current);}

   // Get all the URIs with Accept permission.	  
   IEnumerator myAcceptEnum = myWebPermission.AcceptList;
   Console.WriteLine("\n\nThe 'URIs' with 'Accept' permission is :\n");
     
   while (myAcceptEnum.MoveNext())
     {Console.WriteLine("\t" + myAcceptEnum.Current);}

  ' Create a Regex that accepts all the URLs contianing the host fragment www.contoso.com.
  Dim myRegex As New Regex("http://www\.contoso\.com/.*")
    
  ' Create a WebPermission that gives permission to all the hosts containing same host fragment.
  Dim myWebPermission As New WebPermission(NetworkAccess.Connect, myRegex)
  ' Add connect privileges for a www.adventure-works.com.
  myWebPermission.AddPermission(NetworkAccess.Connect, "http://www.adventure-works.com")
  ' Add accept privileges for www.alpineskihouse.com.
  myWebPermission.AddPermission(NetworkAccess.Accept, "http://www.alpineskihouse.com/")
  ' Check whether all callers higher in the call stack have been granted the permission.
  myWebPermission.Demand()
    
  ' Get all the URIs with Connect permission.
  Dim myConnectEnum As IEnumerator = myWebPermission.ConnectList
  Console.WriteLine(ControlChars.NewLine + "The 'URIs' with 'Connect' permission are :" + ControlChars.NewLine)
  While myConnectEnum.MoveNext()
    Console.WriteLine((ControlChars.Tab + myConnectEnum.Current.ToString()))
  End While 
  
  ' Get all the URIs with Accept permission.	  
  Dim myAcceptEnum As IEnumerator = myWebPermission.AcceptList
  Console.WriteLine(ControlChars.NewLine + ControlChars.NewLine + "The 'URIs' with 'Accept' permission is :" + ControlChars.NewLine)

  While myAcceptEnum.MoveNext()
    Console.WriteLine((ControlChars.Tab + myAcceptEnum.Current))
  End While

Commenti

WebPermission fornisce un set di metodi e proprietà per controllare l'accesso alle risorse Internet. È possibile usare un WebPermission oggetto per fornire l'accesso limitato o senza restrizioni alla risorsa, in base all'oggetto PermissionState impostato al momento della WebPermission creazione di .

Creare un'istanza WebPermission chiamando il relativo costruttore usando uno dei set di parametri seguenti:

• Nessun parametro. L'impostazione predefinita è PermissionState è None.

• Oggetto PermissionState. Unrestricted Specificare per consentire l'uso di qualsiasi URI nella classe di destinazione o None per consentire l'accesso solo agli URI specificati tramite l'uso del AddPermission metodo .

• Valore NetworkAccess e stringa URI. L'URI specificato dispone delle autorizzazioni concesse dal NetworkAccess valore .

• Identificatore NetworkAccess e espressione regolare URI.

e ConnectListAcceptList conservare gli URI a cui è stata concessa l'autorizzazione di accesso. Per aggiungere un URI a uno di questi elenchi, usare AddPermission. Se si passa Accept come NetworkAccess parametro, l'URI verrà aggiunto a AcceptList. WebPermission consentirà le connessioni alla classe di destinazione con URI corrispondenti a AcceptList.

Costruttori

Proprietà

Metodi

Si applica a

Vedi anche

• CodeAccessPermission
• PermissionState
• NetworkAccess