Obtener el rol y la lista de roles del usuario de CRM 4.0 desde el cliente

//check if the current user has the 'System Administrator' role alert(UserHasRole("System Administrator"));
function UserHasRole(roleName)
{
 //get Current User Roles, oXml is an object var oXml = GetCurrentUserRoles();
 if(oXml != null)
 {
 //select the node text var roles = oXml.selectNodes("//BusinessEntity/q1:name");
 if(roles != null)
 {
  for( i = 0; i < roles.length; i++)
  {
   if(roles[i].text == roleName)
   {
    //return true if user has this role 
    return true;
   }
  }
 }
}
 //otherwise return false 
return false;
}
function GetCurrentUserRoles()
{
 var xml = "" +
        "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
        "<soap:Envelope xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">" +
        GenerateAuthenticationHeader() +
        " <soap:Body>" +
        " <RetrieveMultiple xmlns=\"http://schemas.microsoft.com/crm/2007/WebServices\">" +
        " <query xmlns:q1=\"http://schemas.microsoft.com/crm/2006/Query\" xsi:type=\"q1:QueryExpression\">" +
        " <q1:EntityName>role</q1:EntityName>" +
        " <q1:ColumnSet xsi:type=\"q1:ColumnSet\">" +
        " <q1:Attributes>" +
        " <q1:Attribute>name</q1:Attribute>" +
        " </q1:Attributes>" +
        " </q1:ColumnSet>" +
        " <q1:Distinct>false</q1:Distinct>" +
        " <q1:LinkEntities>" +
        " <q1:LinkEntity>" +
        " <q1:LinkFromAttributeName>roleid</q1:LinkFromAttributeName>" +
        " <q1:LinkFromEntityName>role</q1:LinkFromEntityName>" +
        " <q1:LinkToEntityName>systemuserroles</q1:LinkToEntityName>" +
        " <q1:LinkToAttributeName>roleid</q1:LinkToAttributeName>" +
        " <q1:JoinOperator>Inner</q1:JoinOperator>" +
        " <q1:LinkEntities>" +
        " <q1:LinkEntity>" +
        " <q1:LinkFromAttributeName>systemuserid</q1:LinkFromAttributeName>" +
        " <q1:LinkFromEntityName>systemuserroles</q1:LinkFromEntityName>" +
        " <q1:LinkToEntityName>systemuser</q1:LinkToEntityName>" +
        " <q1:LinkToAttributeName>systemuserid</q1:LinkToAttributeName>" +
        " <q1:JoinOperator>Inner</q1:JoinOperator>" +
        " <q1:LinkCriteria>" +
        " <q1:FilterOperator>And</q1:FilterOperator>" +
        " <q1:Conditions>" +
        " <q1:Condition>" +
        " <q1:AttributeName>systemuserid</q1:AttributeName>" +
        " <q1:Operator>EqualUserId</q1:Operator>" +
        " </q1:Condition>" +
        " </q1:Conditions>" +
        " </q1:LinkCriteria>" +
        " </q1:LinkEntity>" +
        " </q1:LinkEntities>" +
        " </q1:LinkEntity>" +
        " </q1:LinkEntities>" +
        " </query>" +
        " </RetrieveMultiple>" +
        " </soap:Body>" +
        "</soap:Envelope>" +
        "";
 var xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
 xmlHttpRequest.Open("POST", "/mscrmservices/2007/CrmService.asmx", false);
 xmlHttpRequest.setRequestHeader("SOAPAction"," http://schemas.microsoft.com/crm/2007/WebServices/RetrieveMultiple");
 xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
 xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
 xmlHttpRequest.send(xml);
 var resultXml = xmlHttpRequest.responseXML;
 return(resultXml);
}

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