HostSecurityManager.DetermineApplicationTrust Método

public:
 virtual System::Security::Policy::ApplicationTrust ^ DetermineApplicationTrust(System::Security::Policy::Evidence ^ applicationEvidence, System::Security::Policy::Evidence ^ activatorEvidence, System::Security::Policy::TrustManagerContext ^ context);

public virtual System.Security.Policy.ApplicationTrust DetermineApplicationTrust(System.Security.Policy.Evidence applicationEvidence, System.Security.Policy.Evidence activatorEvidence, System.Security.Policy.TrustManagerContext context);

[System.Security.SecurityCritical]
public virtual System.Security.Policy.ApplicationTrust DetermineApplicationTrust(System.Security.Policy.Evidence applicationEvidence, System.Security.Policy.Evidence activatorEvidence, System.Security.Policy.TrustManagerContext context);

abstract member DetermineApplicationTrust : System.Security.Policy.Evidence * System.Security.Policy.Evidence * System.Security.Policy.TrustManagerContext -> System.Security.Policy.ApplicationTrust
override this.DetermineApplicationTrust : System.Security.Policy.Evidence * System.Security.Policy.Evidence * System.Security.Policy.TrustManagerContext -> System.Security.Policy.ApplicationTrust

[<System.Security.SecurityCritical>]
abstract member DetermineApplicationTrust : System.Security.Policy.Evidence * System.Security.Policy.Evidence * System.Security.Policy.TrustManagerContext -> System.Security.Policy.ApplicationTrust
override this.DetermineApplicationTrust : System.Security.Policy.Evidence * System.Security.Policy.Evidence * System.Security.Policy.TrustManagerContext -> System.Security.Policy.ApplicationTrust

Public Overridable Function DetermineApplicationTrust (applicationEvidence As Evidence, activatorEvidence As Evidence, context As TrustManagerContext) As ApplicationTrust

Parâmetros

Devoluções

Um objeto que contém informação de confiança sobre a aplicação.

Atributos

SecurityCriticalAttribute

Exceções

Exemplos

O exemplo seguinte mostra como substituir o DetermineApplicationTrust método para um gestor de segurança de host personalizado. Este exemplo faz parte de um exemplo mais amplo fornecido à HostSecurityManager turma.

[SecurityPermissionAttribute(SecurityAction.Demand, Execution = true)]
[SecurityPermissionAttribute(SecurityAction.Assert, Unrestricted = true)]
public override ApplicationTrust DetermineApplicationTrust(Evidence applicationEvidence, Evidence activatorEvidence, TrustManagerContext context)
{
    if (applicationEvidence == null)
        throw new ArgumentNullException("applicationEvidence");

    // Get the activation context from the application evidence.
    // This HostSecurityManager does not examine the activator evidence
    // nor is it concerned with the TrustManagerContext;
    // it simply grants the requested grant in the application manifest.

    IEnumerator enumerator = applicationEvidence.GetHostEnumerator();
    ActivationArguments activationArgs = null;
    while (enumerator.MoveNext())
    {
        activationArgs = enumerator.Current as ActivationArguments;
        if (activationArgs != null)
            break;
    }

    if (activationArgs == null)
        return null;

    ActivationContext activationContext = activationArgs.ActivationContext;
    if (activationContext == null)
        return null;

    ApplicationTrust trust = new ApplicationTrust(activationContext.Identity);
    ApplicationSecurityInfo asi = new ApplicationSecurityInfo(activationContext);
    trust.DefaultGrantSet = new PolicyStatement(asi.DefaultRequestSet, PolicyStatementAttribute.Nothing);
    trust.IsApplicationTrustedToRun = true;
    return trust;
}

    <SecurityPermissionAttribute(SecurityAction.Demand, Execution:=True), SecurityPermissionAttribute(SecurityAction.Assert, Unrestricted:=True)> _
    Public Overrides Function DetermineApplicationTrust(ByVal applicationEvidence As Evidence, ByVal activatorEvidence As Evidence, ByVal context As TrustManagerContext) As ApplicationTrust
        If applicationEvidence Is Nothing Then
            Throw New ArgumentNullException("applicationEvidence")
        End If
        ' Get the activation context from the application evidence.
        ' This HostSecurityManager does not examine the activator evidence
        ' nor is it concerned with the TrustManagerContext;
        ' it simply grants the requested grant in the application manifest.
        Dim enumerator As IEnumerator = applicationEvidence.GetHostEnumerator()
        Dim activationArgs As ActivationArguments = Nothing
        While enumerator.MoveNext()
            activationArgs = enumerator.Current '
            If Not (activationArgs Is Nothing) Then
                Exit While
            End If
        End While
        If activationArgs Is Nothing Then
            Return Nothing
        End If
        Dim activationContext As ActivationContext = activationArgs.ActivationContext
        If activationContext Is Nothing Then
            Return Nothing
        End If
        Dim trust As New ApplicationTrust(activationContext.Identity)
        Dim asi As New ApplicationSecurityInfo(activationContext)
        trust.DefaultGrantSet = New PolicyStatement(asi.DefaultRequestSet, PolicyStatementAttribute.Nothing)
        trust.IsApplicationTrustedToRun = True
        Return trust

    End Function 'DetermineApplicationTrust
End Class

Observações

Este método pode ser anulado por uma classe derivada. A implementação base chama o gestor de segurança da aplicação para determinar se a aplicação deve ser executada.

A implementação base não utiliza a evidência ativadora. No entanto, uma implementação sobreposta poderia usar a evidência ativadora para determinar a evidência de segurança do domínio da aplicação que tenta ativar a aplicação.