Mechanizing Webassembly Proposals
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Differential Fuzzing the Webassembly
Master’s Programme in Security and Cloud Computing Differential Fuzzing the WebAssembly Master’s Thesis Gilang Mentari Hamidy MASTER’S THESIS Aalto University - EURECOM MASTER’STHESIS 2020 Differential Fuzzing the WebAssembly Fuzzing Différentiel le WebAssembly Gilang Mentari Hamidy This thesis is a public document and does not contain any confidential information. Cette thèse est un document public et ne contient aucun information confidentielle. Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Technology. Antibes, 27 July 2020 Supervisor: Prof. Davide Balzarotti, EURECOM Co-Supervisor: Prof. Jan-Erik Ekberg, Aalto University Copyright © 2020 Gilang Mentari Hamidy Aalto University - School of Science EURECOM Master’s Programme in Security and Cloud Computing Abstract Author Gilang Mentari Hamidy Title Differential Fuzzing the WebAssembly School School of Science Degree programme Master of Science Major Security and Cloud Computing (SECCLO) Code SCI3084 Supervisor Prof. Davide Balzarotti, EURECOM Prof. Jan-Erik Ekberg, Aalto University Level Master’s thesis Date 27 July 2020 Pages 133 Language English Abstract WebAssembly, colloquially known as Wasm, is a specification for an intermediate representation that is suitable for the web environment, particularly in the client-side. It provides a machine abstraction and hardware-agnostic instruction sets, where a high-level programming language can target the compilation to the Wasm instead of specific hardware architecture. The JavaScript engine implements the Wasm specification and recompiles the Wasm instruction to the target machine instruction where the program is executed. Technically, Wasm is similar to a popular virtual machine bytecode, such as Java Virtual Machine (JVM) or Microsoft Intermediate Language (MSIL). -
Interaction Between Web Browsers and Script Engines
IT 12 058 Examensarbete 45 hp November 2012 Interaction between web browsers and script engines Xiaoyu Zhuang Institutionen för informationsteknologi Department of Information Technology Abstract Interaction between web browser and the script engine Xiaoyu Zhuang Teknisk- naturvetenskaplig fakultet UTH-enheten Web browser plays an important part of internet experience and JavaScript is the most popular programming language as a client side script to build an active and Besöksadress: advance end user experience. The script engine which executes JavaScript needs to Ångströmlaboratoriet Lägerhyddsvägen 1 interact with web browser to get access to its DOM elements and other host objects. Hus 4, Plan 0 Browser from host side needs to initialize the script engine and dispatch script source code to the engine side. Postadress: This thesis studies the interaction between the script engine and its host browser. Box 536 751 21 Uppsala The shell where the engine address to make calls towards outside is called hosting layer. This report mainly discussed what operations could appear in this layer and Telefon: designed testing cases to validate if the browser is robust and reliable regarding 018 – 471 30 03 hosting operations. Telefax: 018 – 471 30 00 Hemsida: http://www.teknat.uu.se/student Handledare: Elena Boris Ämnesgranskare: Justin Pearson Examinator: Lisa Kaati IT 12 058 Tryckt av: Reprocentralen ITC Contents 1. Introduction................................................................................................................................ -
Machine Learning in the Browser
Machine Learning in the Browser The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:38811507 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA Machine Learning in the Browser a thesis presented by Tomas Reimers to The Department of Computer Science in partial fulfillment of the requirements for the degree of Bachelor of Arts in the subject of Computer Science Harvard University Cambridge, Massachusetts March 2017 Contents 1 Introduction 3 1.1 Background . .3 1.2 Motivation . .4 1.2.1 Privacy . .4 1.2.2 Unavailable Server . .4 1.2.3 Simple, Self-Contained Demos . .5 1.3 Challenges . .5 1.3.1 Performance . .5 1.3.2 Poor Generality . .7 1.3.3 Manual Implementation in JavaScript . .7 2 The TensorFlow Architecture 7 2.1 TensorFlow's API . .7 2.2 TensorFlow's Implementation . .9 2.3 Portability . .9 3 Compiling TensorFlow into JavaScript 10 3.1 Motivation to Compile . 10 3.2 Background on Emscripten . 10 3.2.1 Build Process . 12 3.2.2 Dependencies . 12 3.2.3 Bitness Assumptions . 13 3.2.4 Concurrency Model . 13 3.3 Experiences . 14 4 Results 15 4.1 Benchmarks . 15 4.2 Library Size . 16 4.3 WebAssembly . 17 5 Developer Experience 17 5.1 Universal Graph Runner . -
Javascript API Deprecation in the Wild: a First Assessment
JavaScript API Deprecation in the Wild: A First Assessment Romulo Nascimento, Aline Brito, Andre Hora, Eduardo Figueiredo Department of Computer Science Federal University of Minas Gerais, Brazil romulonascimento, alinebrito, andrehora,figueiredo @dcc.ufmg.br { } Abstract—Building an application using third-party libraries of our knowledge, there are no detailed studies regarding API is a common practice in software development. As any other deprecation in the JavaScript ecosystem. software system, code libraries and their APIs evolve over JavaScript has become extremely popular over the last years. time. In order to help version migration and ensure backward According to the Stack Overflow 2019 Developer Survey1, compatibility, a recommended practice during development is to deprecate API. Although studies have been conducted to JavaScript is the most popular programming language in this investigate deprecation in some programming languages, such as platform for the seventh consecutive year. GitHub also reports Java and C#, there are no detailed studies on API deprecation that JavaScript is the most popular language in terms of unique in the JavaScript ecosystem. This paper provides an initial contributors to both public and private repositories2. The npm assessment of API deprecation in JavaScript by analyzing 50 platform, the largest JavaScript package manager, states on popular software projects. Initial results suggest that the use of 3 deprecation mechanisms in JavaScript packages is low. However, their latest survey that 99% of JavaScript developers rely on wefindfive different ways that developers use to deprecate API npm to ease the management of their project dependencies. in the studied projects. Among these solutions, deprecation utility This survey also points out the massive growth in npm usage (i.e., any sort of function specially written to aid deprecation) and that started about 5 years ago. -
Coffeescript Accelerated Javascript Development.Pdf
Download from Wow! eBook <www.wowebook.com> What readers are saying about CoffeeScript: Accelerated JavaScript Development It’s hard to imagine a new web application today that doesn’t make heavy use of JavaScript, but if you’re used to something like Ruby, it feels like a significant step down to deal with JavaScript, more of a chore than a joy. Enter CoffeeScript: a pre-compiler that removes all the unnecessary verbosity of JavaScript and simply makes it a pleasure to write and read. Go, go, Coffee! This book is a great introduction to the world of CoffeeScript. ➤ David Heinemeier Hansson Creator, Rails Just like CoffeeScript itself, Trevor gets straight to the point and shows you the benefits of CoffeeScript and how to write concise, clear CoffeeScript code. ➤ Scott Leberknight Chief Architect, Near Infinity Though CoffeeScript is a new language, you can already find it almost everywhere. This book will show you just how powerful and fun CoffeeScript can be. ➤ Stan Angeloff Managing Director, PSP WebTech Bulgaria Download from Wow! eBook <www.wowebook.com> This book helps readers become better JavaScripters in the process of learning CoffeeScript. What’s more, it’s a blast to read, especially if you are new to Coffee- Script and ready to learn. ➤ Brendan Eich Creator, JavaScript CoffeeScript may turn out to be one of the great innovations in web application development; since I first discovered it, I’ve never had to write a line of pure JavaScript. I hope the readers of this wonderful book will be able to say the same. ➤ Dr. Nic Williams CEO/Founder, Mocra CoffeeScript: Accelerated JavaScript Development is an excellent guide to Coffee- Script from one of the community’s most esteemed members. -
Chapter 1: Introduction to the Pencil Code Environment
Chapter 1: Introduction to the Pencil Code Environment In this manual we will show how to use Pencil Code to explore programming. Pencil Code is a free programming tool available at pencilcode.net. Pencil Code was developed by Google engineer David Bau together with his son Anthony Bau, with open-source contributions from many others. Two Ways of Looking at a Program There are two ways of viewing a program. A computer user sees a program by looking at its output. A programmer works with a program’s source code. In Pencil Code, the screen is split into two halves, with the source code on the left and the output on the right. You run programs by by pressing the “play” button in the middle. The Pencil Code interface splits the screen, showing source code on the left and output on the right. The play button in the center runs the code and produces output. Languages and Libraries in Pencil Code Pencil Code supports code in both blocks and text using mainstream web programming languages and useful libraries including: • HTML, the standard HyperText Markup Language for the web. • JavaScript, the standard programming language of web browsers. • CSS, the standard Cascading Style Sheet language for visual styles on the web. • jQuery, a popular library that simplifies programming interactive websites. • CoffeeScript, a language that lets you do more with less typing than JavaScript. • jQuery-turtle, which extends jQuery to simplify graphics and animation for novices. With Pencil Code, students can use these technologies to create web applications with global visibility and impact while exploring fundamental concepts in computational thinking. -
Coffeescript Accelerated Javascript Development, Second Edition
Extracted from: CoffeeScript Accelerated JavaScript Development, Second Edition This PDF file contains pages extracted from CoffeeScript, published by the Prag- matic Bookshelf. For more information or to purchase a paperback or PDF copy, please visit http://www.pragprog.com. Note: This extract contains some colored text (particularly in code listing). This is available only in online versions of the books. The printed versions are black and white. Pagination might vary between the online and printed versions; the content is otherwise identical. Copyright © 2015 The Pragmatic Programmers, LLC. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior consent of the publisher. The Pragmatic Bookshelf Dallas, Texas • Raleigh, North Carolina CoffeeScript Accelerated JavaScript Development, Second Edition Trevor Burnham The Pragmatic Bookshelf Dallas, Texas • Raleigh, North Carolina Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and The Pragmatic Programmers, LLC was aware of a trademark claim, the designations have been printed in initial capital letters or in all capitals. The Pragmatic Starter Kit, The Pragmatic Programmer, Pragmatic Programming, Pragmatic Bookshelf, PragProg and the linking g device are trade- marks of The Pragmatic Programmers, LLC. Every precaution was taken in the preparation of this book. However, the publisher assumes no responsibility for errors or omissions, or for damages that may result from the use of information (including program listings) contained herein. Our Pragmatic courses, workshops, and other products can help you and your team create better software and have more fun. -
Learning Javascript Design Patterns
Learning JavaScript Design Patterns Addy Osmani Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Learning JavaScript Design Patterns by Addy Osmani Copyright © 2012 Addy Osmani. All rights reserved. Revision History for the : 2012-05-01 Early release revision 1 See http://oreilly.com/catalog/errata.csp?isbn=9781449331818 for release details. ISBN: 978-1-449-33181-8 1335906805 Table of Contents Preface ..................................................................... ix 1. Introduction ........................................................... 1 2. What is a Pattern? ...................................................... 3 We already use patterns everyday 4 3. 'Pattern'-ity Testing, Proto-Patterns & The Rule Of Three ...................... 7 4. The Structure Of A Design Pattern ......................................... 9 5. Writing Design Patterns ................................................. 11 6. Anti-Patterns ......................................................... 13 7. Categories Of Design Pattern ............................................ 15 Creational Design Patterns 15 Structural Design Patterns 16 Behavioral Design Patterns 16 8. Design Pattern Categorization ........................................... 17 A brief note on classes 17 9. JavaScript Design Patterns .............................................. 21 The Creational Pattern 22 The Constructor Pattern 23 Basic Constructors 23 Constructors With Prototypes 24 The Singleton Pattern 24 The Module Pattern 27 iii Modules 27 Object Literals 27 The Module Pattern -
Ecmascript (Or ES)
Lesson: Web Programming(1) Omid Jafarinezhad Sharif University of Technology Objective Covers languages, tools, and techniques for developing interactive and dynamic web pages. Topics include page styling, design, and layout; client and server side scripting; web security; and interacting with data sources such as databases Web development can range from developing the simplest static single page of plain text to the most complex web apps (such as electronic businesses, and social network services) ● HTTP, JavaScript, CSS, HTML5, ReactJs, Flow, Progressive Web App ● Golang, NodeJs, MongoDB, PostgreSQL, Redis ● Docker, Git, YUIDoc, Jest, Materials WebPack, Gulp, Browserify, Locust ● (Optional/Research) Kubernetes, InfluxDB, RabbitMQ, gRPC, Ansible Grading Big Picture Internal or external Content Delivery Email/SMS/... services; may be Network (CDN) Service developed in different language Win HTTP, gRPC HTTP Linux WebSocket front-end back-end Data storage Mac JavaScript, Html, NodeJs, mongoDB, CSS, Ajax, GoLang, cache postgreSQL, WebRTC, ReactJs, C#, Java, InfluxDB, ... Mobile AngularJs,... Dart, ... Redis, AMQP, ... Memcached, ... logs queue Logstash, RabitMQ, Fluentd, ... ZeroMQ, ... back-end 1 Load front-end back-end 2 balancing kubernetes cluster, HAProxy, Docker Swarm, ... back-end 3 Git repository Test, Continuous deployment, Code coverage, Merge, Review Build automation, Deployment automation Development Staging Production Bug User feedback, Crash report,... Continuous ... Continuous Integration basically just means that the developer's -
Learning HTML5 Game Programming Addison-Wesley Learning Series
Learning HTML5 Game Programming Addison-Wesley Learning Series Visit informit.com/learningseries for a complete list of available publications. The Addison-Wesley Learning Series is a collection of hands-on programming guides that help you quickly learn a new technology or language so you can apply what you’ve learned right away. Each title comes with sample code for the application or applications built in the text. This code is fully annotated and can be reused in your own projects with no strings attached. Many chapters end with a series of exercises to encourage you to reexamine what you have just learned, and to tweak or adjust the code as a way of learning. Titles in this series take a simple approach: they get you going right away and leave you with the ability to walk off and build your own application and apply the language or technology to whatever you are working on. Learning HTML5 Game Programming A Hands-on Guide to Building Online Games Using Canvas, SVG, and WebGL James L. Williams Upper Saddle River, NJ • Boston • Indianapolis • San Francisco New York • Toronto • Montreal • London • Munich • Paris • Madrid Cape Town • Sydney • Tokyo • Singapore • Mexico City Many of the designations used by manufacturers and sellers to distinguish their products Associate are claimed as trademarks. Where those designations appear in this book, and the publish- Publisher er was aware of a trademark claim, the designations have been printed with initial capital Mark Taub letters or in all capitals. Senior Acquisitions The author and publisher have taken care in the preparation of this book, but make no Editor expressed or implied warranty of any kind and assume no responsibility for errors or omis- Trina MacDonald sions. -
Expanding the Power of Csound with Integrated Html and Javascript
Michael Gogins. Expanding the Power of Csound with Intergrated HTML and JavaScript EXPANDING THE POWER OF CSOUND WITH INTEGRATED HTML AND JAVA SCRIPT Michael Gogins [email protected] https://michaelgogins.tumblr.com http://michaelgogins.tumblr.com/ This paper presents recent developments integrating Csound [1] with HTML [2] and JavaScript [3, 4]. For those new to Csound, it is a “MUSIC N” style, user- programmable software sound synthesizer, one of the first yet still being extended, written mostly in the C language. No synthesizer is more powerful. Csound can now run in an interactive Web page, using all the capabilities of current Web browsers: custom widgets, 2- and 3-dimensional animated and interactive graphics canvases, video, data storage, WebSockets, Web Audio, mathematics typesetting, etc. See the whole list at HTML5 TEST [5]. Above all, the JavaScript programming language can be used to control Csound, extend its capabilities, generate scores, and more. JavaScript is the “glue” that binds together the components and capabilities of HTML5. JavaScript is a full-featured, dynamically typed language that supports functional programming and prototype-based object- oriented programming. In most browsers, the JavaScript virtual machine includes a just- in-time compiler that runs about 4 times slower than compiled C, very fast for a dynamic language. JavaScript has limitations. It is single-threaded, and in standard browsers, is not permitted to access the local file system outside the browser's sandbox. But most musical applications can use an embedded browser, which bypasses the sandbox and accesses the local file system. HTML Environments for Csound There are two approaches to integrating Csound with HTML and JavaScript. -
Open Source on IBM I Webinar Series Day 2 ERWIN EARLEY ([email protected]), SR
Open Source on IBM i Webinar Series Day 2 ERWIN EARLEY ([email protected]), SR. SOLUTIONS CONSULTANT, PERFORCE, NOVEMBER 2019 2 | COMMON Webinar Series: Open Source on IBM i | November 2019 zend.com Day 1 Review • Introduction to Open Source on IBM i • Why is Open Source on IBM i Important • Understanding the PASE environment as the enabler of Open Source on IBM i • Getting Familiar with the PASE environment 2 | Zend by Perforce © 2019 Perforce Software, Inc. zend.com 3 | COMMON Webinar Series: Open Source on IBM i | November 2019 zend.com Day 2 Agenda • Setting up OSS EcoSystem on IBM i – ACS version • Exploring Containers on IBM i • Managing Open Source on IBM i • Exploring Open Source Programming Languages ▪ Integration with Db2 and ILE • After-Hours Lab: Containers & Setting up Development Environment • After-Hours Lab: Open Source Programming Languages 3 | Zend by Perforce © 2019 Perforce Software, Inc. zend.com IBM Systems Technical University © 3 4 | COMMON Webinar Series: Open Source on IBM i | November 2019 zend.com Setting up OSS Ecosystem on IBM i – ACS Version 4 | Zend by Perforce © 2019 Perforce Software, Inc. zend.com 5 | COMMON Webinar Series: Open Source on IBM i | November 2019 zend.com The directory structure Before installing the Open Source ecosystem / dev home lib sbin tmp usr var Directory Contents bin Commands dev Device Files etc Configuration files home User Home Directories lib Libraries pkgs Package files / commands sbin Privileged commands tmp Temporary files usr Utilities & Applications var Variable files