public override bool Visit(ObjectAccess node)
{
/*
* if (node.obj is IdentifierStatic && node.Parent is Assignment)
* {
* Assignment ass = node.Parent as Assignment;
* Identifier id = ass.lvalue as Identifier;
* IdentifierStatic stid = node.obj as IdentifierStatic;
* string objname = id.name;
* outputCode("new " + stid.name + "();", false, false);
* outputCode("", false, true);
* outputCode(objname + "->", true, false);
* }
* else
*/
{
if (node.obj is IdentifierStatic)
{
IdentifierStatic stid = node.obj as IdentifierStatic;
outputCode(stid.name, false, false);
}
else
{
traverse(node.obj);
}
outputCode(".", false, false);
}
outputCode(node.field, false, false);
return(true);
}
public override bool Visit(RoutineCall node)
{
//Visit((LvalueExpression) node);
// string name = (node.func as Identifier).name;
traverse(node.func);
outputCode("(", false, false);
int i = 0;
foreach (Expression n in node.args)
{
if (i > 0)
{
outputCode(", ", false, false);
}
traverse(n);
i++;
}
outputCode(")", false, false);
if (node.func.Type is MethodType)
{
MethodType met = (node.func.Type as MethodType);
if (met.IsDestructor)
{
outputCode(";", false, true);
ObjectAccess oa = node.func as ObjectAccess;
Identifier obj = oa.obj as Identifier;
outputCode("delete " + obj.name, true, false);
}
}
return(true);
}
public DryveMessage(UInt16 txnId, DryveObject dryveObject, ObjectAccess objectAccess, byte[] dataValue = null)
{
_txnId = txnId;
_dryveObject = dryveObject;
_objectAccess = objectAccess;
_dataValue = dataValue == null ? new byte[0] : dataValue;
MessageBytes = ConstructMessage();
}
/// <summary>
/// Generate signed URL for the OSS object.
/// </summary>
private static async Task <string> GetSignedUrl(IObjectsApi api, string bucketKey, string objectName,
ObjectAccess access = ObjectAccess.Read, int minutesExpiration = 30)
{
var signature = new PostBucketsSigned(minutesExpiration);
dynamic result = await api.CreateSignedResourceAsync(bucketKey, objectName, signature, AsString(access));
return(result.signedUrl);
}
public override Node VisitObjectAccess(TParser.ObjectAccessContext context)
{
var path = new NodesCollection <Node>(context.Start);
VisitObjectAccess(context, path);
var obj = new ObjectAccess(path[0], null, path[0].Position);
foreach (var node in path.Skip(1))
{
obj = new ObjectAccess(node, obj, node.Position);
}
return(obj);
}
private byte[] SendAndReceive(DryveObject messageType, int wait = 50, ObjectAccess accessType = ObjectAccess.Read, byte[] dataValue = null, ResultFormat format = ResultFormat.Binary)
{
DryveMessage msg = new DryveMessage(_txnId, messageType, accessType, dataValue);
byte[] message = msg.MessageBytes;
_txnId++;
_client.SendMessage(message);
System.Threading.Thread.Sleep(wait);
var msgLength = accessType == ObjectAccess.Read ? message.Length + (int)message[18] : 19;
var result = _client.ReceiveMessage(msgLength);
if (!result.Take(2).SequenceEqual(message.Take(2)))
{
throw new Exception("Communication error - Transaction ID mismatch.");
}
return(result);
}
public MemberAccessPermissionItem FindAccessItem(Type objectType, ObjectAccess access)
{
return(null);
// Type currentType = objectType;
// while (true)
// {
// bool needToCheckPersistentBaseObjectTypePermission = true;
// if (currentType != null && currentType.BaseType != null &&
// PermissionTargetBusinessClassListConverter.PersistentBaseObjectType.IsAssignableFrom(currentType.BaseType))
// {
// needToCheckPersistentBaseObjectTypePermission = false;
// }
// if (needToCheckPersistentBaseObjectTypePermission && PermissionTargetBusinessClassListConverter.PersistentBaseObjectType.IsAssignableFrom(currentType))
// {
// ParticularAccessItem persistentBaseObjectItem = FindExactItem(PermissionTargetBusinessClassListConverter.PersistentBaseObjectType, access);
// if (persistentBaseObjectItem != null)
// {
// return persistentBaseObjectItem;
// }
// }
// ParticularAccessItem item = FindExactItem(currentType, access);
// if (item != null)
// {
// return item;
// }
// if ((currentType != null) && currentType.IsInterface)
// {
// currentType = typeof(object);
// }
// else
// {
// if ((currentType == null) || (currentType == typeof(object)))
// {
// break;
// }
// currentType = currentType.BaseType;
// }
// }
// return null;
}
public ConditionalObjectAccessPermission(Type objectType, ObjectAccess objectAccess, ObjectAccessModifier modifier) : base(objectType, objectAccess, modifier)
{
}
public ConditionalObjectAccessPermission(Type objectType, ObjectAccess access, SecurityContextList contexts) : base(objectType, access, contexts)
{
}
public ConditionalObjectAccessPermission(Type objectType, ObjectAccess access) : base(objectType, access)
{
}
public ConditionalParticularAccessItem(Type objectType, ObjectAccess particularAccess, ObjectAccessModifier modifier, string condition)
: base(objectType, particularAccess, modifier)
{
Condition = condition ?? string.Empty;
}
public ConditionalParticularAccessItem(Type objectType, ObjectAccess particularAccess, ObjectAccessModifier modifier)
: this(objectType, particularAccess, modifier, string.Empty)
{
}
public virtual T Visit(ObjectAccess node)
{
Visit((LvalueExpression)node);
return(traverse(node.obj));
}
private static string AsString(ObjectAccess access)
{
return(access.ToString().ToLowerInvariant());
}
/// <summary>
/// Generate a signed URL to OSS object.
/// NOTE: An empty object created if not exists.
/// </summary>
/// <param name="bucketKey">Bucket key.</param>
/// <param name="objectName">Object name.</param>
/// <param name="access">Requested access to the object.</param>
/// <param name="minutesExpiration">Minutes while the URL is valid. Default is 30 minutes.</param>
/// <returns>Signed URL</returns>
public async Task <string> CreateSignedUrlAsync(string bucketKey, string objectName, ObjectAccess access = ObjectAccess.Read, int minutesExpiration = 30)
{
return(await WithObjectsApiAsync(async api => await GetSignedUrl(api, bucketKey, objectName, access, minutesExpiration)));
}
public ConditionalObjectAccessPermission(Type objectType, ObjectAccess access, params DevExpress.ExpressApp.Security.SecurityContext[] securityContexts) : base(objectType, access, securityContexts)
{
}
public override bool Visit(ObjectAccess node)
{
Visit((LvalueExpression)node);
TraversePrint(node.obj);
return(true);
}
private object EvaluateNode(ObjectPathNode expression, Context context)
{
var originalContext = context;
object result = context.Unwrap();
var tmp = context;
foreach (var path in expression.path)
{
if (path is StaticObjectPathPartNode)
{
var key = ((StaticObjectPathPartNode)path).name;
result = ObjectAccess.GetProperty(result, key);
// tmp = (Context)EvaluateNode((StaticObjectPathPartNode)path, context);
}
if (path is MethodCallNode)
{
var methodCall = (MethodCallNode)path;
var callee = result;
if (callee == null)
{
// TODO this might happen if a function is registered directly in the context
continue;
}
if (!this.CanCallMethod(callee, methodCall.name))
{
throw new EvaluationException($"Method {methodCall.name} cannot be called on the given object");
}
var methodInfo = callee.GetType().GetMethod(methodCall.name);
if (methodInfo == null)
{
throw new EvaluationException($"Method ${methodCall.name} does not exist on the given object");
}
var parameters = new List <object>();
for (var i = 0; i < methodCall.arguments.Length; i++)
{
var argNode = methodCall.arguments[i];
var argValue = EvaluateNode(argNode, context);
if (argValue is float)
{
var parameterInfo = methodInfo.GetParameters()[i];
if (parameterInfo.ParameterType == typeof(int))
{
argValue = Convert.ToInt32(argValue);
}
}
parameters.Add(argValue);
}
for (var i = methodCall.arguments.Length; i < methodInfo.GetParameters().Length; i++)
{
var parameterInfo = methodInfo.GetParameters()[i];
if (parameterInfo.IsOptional)
{
parameters.Add(parameterInfo.DefaultValue);
}
}
// var parameters = methodCall.arguments.Select(argNode => EvaluateNode(argNode, context)).ToArray();
var callResult = methodInfo.Invoke(tmp, parameters.ToArray());
result = callResult;
}
if (path is OffsetAccessNode)
{
var offset = Convert.ToString(EvaluateNode(((OffsetAccessNode)path).exp, context));
var value = ObjectAccess.GetProperty(result, offset);
result = value;
}
}
return(result);
}
public ObjectBase()
{
Flag = ObjectFlag.Literal;
Access = ObjectAccess.Unlimited;
}
/// <summary>
/// Generate a signed URL to OSS object.
/// NOTE: An empty object created if not exists.
/// </summary>
/// <param name="objectName">Object name.</param>
/// <param name="access">Requested access to the object.</param>
/// <param name="minutesExpiration">Minutes while the URL is valid. Default is 30 minutes.</param>
/// <returns>Signed URL</returns>
public async Task <string> CreateSignedUrlAsync(string objectName, ObjectAccess access = ObjectAccess.Read, int minutesExpiration = 30)
{
return(await _forgeOSS.CreateSignedUrlAsync(BucketKey, objectName, access, minutesExpiration));
}
