XmlSecureResolver Constructores

public:
 XmlSecureResolver(System::Xml::XmlResolver ^ resolver, System::Security::PermissionSet ^ permissionSet);

public XmlSecureResolver(System.Xml.XmlResolver resolver, System.Security.PermissionSet permissionSet);

new System.Xml.XmlSecureResolver : System.Xml.XmlResolver * System.Security.PermissionSet -> System.Xml.XmlSecureResolver

Public Sub New (resolver As XmlResolver, permissionSet As PermissionSet)

Parámetros

Ejemplos

En el ejemplo siguiente se construye un XmlSecureResolver objeto mediante un conjunto de permisos personalizado.

public static Object GetFile (String fileURL, XmlResolver resolver) {

  // Generate the default PermissionSet using the file URL.
  Evidence evidence = XmlSecureResolver.CreateEvidenceForUrl(fileURL);
  PermissionSet myPermissions = SecurityManager.ResolvePolicy(evidence);

  // Modify the PermissionSet to only allow access to http://www.contoso.com.
  // Create a WebPermission which only allows access to http://www.contoso.com.
  WebPermission myWebPermission = new WebPermission(NetworkAccess.Connect, "http://www.contoso.com");
  // Replace the existing WebPermission in myPermissions with the updated WebPermission.
  myPermissions.SetPermission(myWebPermission);

  // Use the modified PermissionSet to construct the XmlSecureResolver.
  XmlSecureResolver sResolver = new XmlSecureResolver(resolver, myPermissions);

  // Get the object.
  Uri fullUri = sResolver.ResolveUri(null, fileURL);
  return sResolver.GetEntity(fullUri, null, null);
}

public shared function GetFile (fileURL as String , resolver as XmlResolver) as Object
 
  '  Generate the default PermissionSet using the file URL.
  Dim evidence as Evidence = XmlSecureResolver.CreateEvidenceForUrl(fileURL)
  Dim myPermissions as PermissionSet = SecurityManager.ResolvePolicy(evidence)

  '  Modify the PermissionSet to only allow access to http://www.contoso.com.
  '  Create a WebPermission that only allows access to http://www.contoso.com.
  Dim myWebPermission as WebPermission = new WebPermission(NetworkAccess.Connect, "http://www.contoso.com")
  '  Replace the existing WebPermission in myPermissions with the updated WebPermission.
  myPermissions.SetPermission(myWebPermission)

  '  Use the modified PermissionSet to construct the XmlSecureResolver.
  Dim sResolver as XmlSecureResolver = new XmlSecureResolver(resolver, myPermissions)

  '  Get the object.
  Dim fullUri as Uri = sResolver.ResolveUri(nothing, fileURL)
  return sResolver.GetEntity(fullUri, nothing, nothing)
end function

Consulte también

• CreateEvidenceForUrl(String)
• Evidence
• WebPermission
• SecurityManager

public:
 XmlSecureResolver(System::Xml::XmlResolver ^ resolver, System::Security::Policy::Evidence ^ evidence);

public XmlSecureResolver(System.Xml.XmlResolver resolver, System.Security.Policy.Evidence evidence);

new System.Xml.XmlSecureResolver : System.Xml.XmlResolver * System.Security.Policy.Evidence -> System.Xml.XmlSecureResolver

Public Sub New (resolver As XmlResolver, evidence As Evidence)

Parámetros

Comentarios

Estos son algunos escenarios posibles y el tipo de evidencia que se debe proporcionar para cada escenario:

• Si trabaja en un entorno de plena confianza, use el ensamblado para crear la evidencia:

  Evidence myEvidence = this.GetType().Assembly.Evidence;
  XmlSecureResolver myResolver;
  myResolver = new XmlSecureResolver(new XmlUrlResolver(), myEvidence);
  

  Dim myEvidence As Evidence = Me.GetType().Assembly.Evidence
  Dim myResolver As XmlSecureResolver
  myResolver = New XmlSecureResolver(New XmlUrlResolver(), myEvidence)
  

• Si trabaja en un entorno de confianza parcial, tiene código o datos procedentes de un origen externo y conoce el origen del origen externo y tiene un URI verificable, use el URI para crear la evidencia:

  
  Evidence myEvidence = XmlSecureResolver.CreateEvidenceForUrl(sourceURI);
  XmlSecureResolver myResolver = new XmlSecureResolver(new XmlUrlResolver(), myEvidence);
  

  Dim myEvidence As Evidence = XmlSecureResolver.CreateEvidenceForUrl(sourceURI)
  Dim myResolver As New XmlSecureResolver(New XmlUrlResolver(), myEvidence)
  

• Si trabaja en un entorno de confianza parcial y tiene código o datos procedentes de una fuente externa, pero tampoco conoce su procedencia, entonces:

  Establezca el parámetro evidence en null. Esto no permite el acceso a los recursos.

  O bien

  Si la aplicación requiere algún acceso a los recursos, solicite evidencia del autor de la llamada.

Source:

XmlSecureResolver.cs

Source:

XmlSecureResolver.cs

Source:

XmlSecureResolver.cs

Source:

XmlSecureResolver.cs

Source:

XmlSecureResolver.cs

public:
 XmlSecureResolver(System::Xml::XmlResolver ^ resolver, System::String ^ securityUrl);

public XmlSecureResolver(System.Xml.XmlResolver resolver, string? securityUrl);

public XmlSecureResolver(System.Xml.XmlResolver resolver, string securityUrl);

new System.Xml.XmlSecureResolver : System.Xml.XmlResolver * string -> System.Xml.XmlSecureResolver

Public Sub New (resolver As XmlResolver, securityUrl As String)

Parámetros

Ejemplos

En este ejemplo se usa el XmlSecureResolver(XmlResolver, String) constructor para crear un XmlSecureResolver objeto que solo puede acceder al sitio de intranet local.

XmlSecureResolver myResolver = new XmlSecureResolver(new XmlUrlResolver(), "http://myLocalSite/");

Dim myResolver As New XmlSecureResolver(New XmlUrlResolver(), "http://myLocalSite/")

Comentarios