It is often desirable to modify the behavior of existing code bases by wrapping or replacing functions. When editing the source code of those functions is a viable option, this can be a straight-forward process. When the source of the functions cannot be edited (e.g., if the functions are provided by the system C library), then alternative techniques are required. Here, we present such techniqu...

The systrace system-call interposition mechanism has become a popular method for containing untrusted code through program-specific policies enforced by user-level daemons. We describe our extensions to systrace that allow sandboxed processes to further limit their children processes by issuing dynamically constructed policies. We discuss our extensions to the systrace daemon and the OpenBSD ke...

The ever-increasing capability of mobile devices enables many mobile services far beyond a traditional voice call. In this paper, we present WebCall, a research framework on how to share and utilize the rich contextual information about users, such as phonebook, indoor and outdoor location, and calendar. WebCall also demonstrates a few services (e.g. human powered questions and answers) that ca...

The Open Scripting Architecture combines aspects of object-oriented programming, distributed computation, database queries, and dynamic languages into a powerful and practical system for automation, integration, and customization of applications and system services. Applications are integrated together with distributed messaging. The messages operate upon user-level application objects, like wi...

Software programmers want to manage pure software, not hardware-software entanglements. Unfortunately, traditional development methodologies cannot clearly separate hardware and software in embedded system development process. We propose a Hardware/software INterface GEnerator ; we call it HINGE. After receiving device specifications including device usage rules for each device, HINGE automatic...

This article presents a novel framework for the sampling-based profiling of Java programs, which relies on program transformation techniques. We exploit bytecode instruction counting to regularly activate a user-defined profiling agent, which processes the current call stack. This approach has several advantages, such as making the instrumentation entirely portable, generating reproducible prof...

This paper proposes the detection mechanism and implementation of the malware detection system, which generates the behavioral sequences patterns of the malware groups and detects the known and unknown malware. The behavioral patterns of the malware groups are generated as using Multiple Sequence Alignment (MSA) algorithm with the API call sequences occurred from the execution of some malware s...

We extend the mobile network architecture protocol ”LIN6”, to support multihoming, and design a new Application Program Interface (API) that enables an application to support multihoming. The LIN6’s addressing architecture makes it possible to support what we call end-to-end multihoming without any inconsistency. In end-to-end multihoming, a fault-tolerant connection can be achieved relying not...

The MOVE (AC 343) project is dedicated to combine voice and data based services in a single environment. Future personal communicators, i.e. Personal Digital Assistants (PDA) with wireless communication facilities, will allow harmonisation of voice and Internet services using a single access network such as UMTS. The MOVE middleware and its application programming interface (API) for this kind ...

This paper presents a novel profiling approach, which is entirely based on program transformation techniques in order to enable exact profiling, preserving complete call stacks, method invocation counters, and bytecode instruction counters. We exploit the number of executed bytecode instructions as profiling metric, which has several advantages, such as making the instrumentation entirely porta...