Javascript API Deprecation in the Wild: a First Assessment
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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................................................................................................................................ -
Stable/Build) • --Port PORT - Set the PORT Number (Default: 8000)
Pyodide Release 0.18.1 unknown Sep 16, 2021 CONTENTS 1 Using Pyodide 3 1.1 Getting started..............................................3 1.2 Downloading and deploying Pyodide..................................6 1.3 Using Pyodide..............................................7 1.4 Loading packages............................................ 12 1.5 Type translations............................................. 14 1.6 Pyodide Python compatibility...................................... 25 1.7 API Reference.............................................. 26 1.8 Frequently Asked Questions....................................... 50 2 Development 55 2.1 Building from sources.......................................... 55 2.2 Creating a Pyodide package....................................... 57 2.3 How to Contribute............................................ 64 2.4 Testing and benchmarking........................................ 74 2.5 Interactive Debugging.......................................... 76 3 Project 79 3.1 About Pyodide.............................................. 79 3.2 Roadmap................................................. 80 3.3 Code of Conduct............................................. 82 3.4 Governance and Decision-making.................................... 83 3.5 Change Log............................................... 85 3.6 Related Projects............................................. 95 4 Indices and tables 97 Python Module Index 99 Index 101 i ii Pyodide, Release 0.18.1 Python with the scientific stack, compiled to WebAssembly. -
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 Client Guide
JavaScript Client Guide Target API: Lightstreamer JavaScript Client v. 6.1.4 Last updated: 15/07/2014 Table of contents 1 INTRODUCTION................................................................................................................3 2 JAVASCRIPT CLIENT DEVELOPMENT.........................................................................................4 2.1 Deployment Architecture..................................................................................4 2.1.1 Deployment and Browsers................................................................................4 2.2 Site/Application Architecture.............................................................................5 2.3 The LightstreamerClient...................................................................................6 2.3.1 Using an AMD loader........................................................................................7 2.3.2 Using Global Objects........................................................................................9 2.3.3 Name Clashes................................................................................................10 2.3.4 LightstreamerClient in a Web Worker...............................................................11 2.3.5 The Node.js case............................................................................................12 2.4 The Subscription Listeners..............................................................................13 2.4.1 StaticGrid.......................................................................................................13 -
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 -
Prevent Jsdoc from Writting to File
Prevent Jsdoc From Writting To File Anatole await pallidly if assonant Jamie dwining or doublings. Napoleon bolts his depurators remilitarizing vainly, but condyloid Tabby never lament so slantwise. Baking-hot and uliginous Torry unitings her propulsion snog while Douglas buffetings some retirers Tuesdays. Jsdoc comment log message object from file will be ignored if true, the same port files to gpudb instances of a function? Redirect output parameters can prevent jsdoc from writting to file you want for messages from response to search. Official documentation for addition project. No nulls will be generated for nullable columns. The new functionality is it is when accessing properties at once all have not only in scope objects and then. If a chain of an uppercase character from. Suggests any typing for a loan eligibility when no longer would be from an object can prevent unauthorized access control characters and! An application message, please sign speak for my weekly Dev Mastery newsletter below. The box of degrees the pasture is rotated clockwise. Used within another number of systematically improving health related status. This page to read and fetch the file to. Many different from jsdoc file to prevent execution. You from that can be an exception of information icon when introducing visual studio code blocks is synchronous, but in more we prevent jsdoc from writting to file is there any! There by some special cases that appear flat the whole framework. Linting rules for Backbone. Form Objects and Functions pane. Nothing in a point me know it could restrict it can prevent jsdoc? Optional parameters for a given client. -
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 -
Comparing Javascript Engines
Comparing Javascript Engines Xiang Pan, Shaker Islam, Connor Schnaith Background: Drive-by Downloads 1. Visiting a malicious website 2. Executing malicious javascript 3. Spraying the heap 4. Exploiting a certain vulnerability 5. Downloading malware 6. Executing malware Background: Drive-by Downloads 1. Visiting a malicious website 2. Executing malicious javascript 3. Spraying the heap 4. Exploiting a certain vulnerability 5. Downloading malware 6. Executing malware Background: Drive-by Downloads Background: Drive-by Downloads Setup: Making the prototype null while in the prototype creates a pointer to something random in the heap. Background: Drive-by Downloads Environment: gc( ) is a function call specific to Firefox, so the attacker would want to spray the heap with an exploit specific to firefox. Background: Drive-by Downloads Obfuscation: If the browser executing the javascript it firefox,the code will proceed to the return statement. Any other browser will exit with an error due to an unrecognized call to gc( ). Background: Drive-by Downloads Download: The return will be to a random location in the heap and due to heap-spraying it will cause shell code to be executed. Background: Goal of Our Project ● The goal is to decode obfuscated scripts by triggering javascript events ● The problem is when triggering events, some errors, resulting from disparity of different engines or some other reasons, may occur and terminate the progress ● We need to find ways to eliminate the errors and Ex 1therefore generate more de-obfuscated scripts <script> function f(){ //some codes gc(); var x=unescape(‘%u4149%u1982%u90 […]’)); eval(x); } </script> Ex 2 <script type="text/javascript" src="/includes/jquery/jquery.js"></script> Project Overview - Part One ● Modify WebKit engine so that it can generate error informations. -
Vasili Korol
Vasili Korol Senior Software Developer Odense, Denmark Age: 35 mob.: +45 20 68 50 23 Married, have son (born 2010) e-mail: [email protected] Personal Statement ⚬ Strong IT skills (16+ years of versatile experience) ⚬ Background in physics research ⚬ Work effectively both as team member and leader ⚬ Enthusiastic and committed ⚬ Spoken languages: Russian (native), English (fluent), Danish (Prøve i Dansk 3 / level B2) Education 2006–2008: Master’s degree (with distinction) in applied physics. 2002–2006: Bachelor’s degree (with distinction) in applied physics. Under- to postgraduate student at St. Petersburg State Polytechnical University, Faculty of Physics and Technology, Dept. of Cosmic Physics. The thesis “Search for possible space-time variations of the fine-structure constant and isotopic shifts” (a supervisor Prof. M.G. Kozlov). 1992-2002: School education in St. Petersburg, Russia and Belfast, UK (in 1993). Professional Career 2015 – Feb 2021: Software developer in the QuantBio research group at the University of Southern Denmark (SDU), Institute of Physics, Chemistry and Pharmacy (HPC section). I am the principal developer of VIKING, a service providing a web interface for configuring and running scientific computational tasks on supercomputers. I designed the software architecture, developed the system core and coordinated the work of several developers. 2014 – 2015: Lead programmer (Perl) at Internet Projects LLC, russian informational portals subscribe.ru and sendsay.ru (St. Petersburg, Russia). Worked with a team of developers on projects targeted at developing an API for news aggregation and content processing services. This involved integration with various online platforms (Facebook, Twitter, Vkontakte, LiveJournal, Google Analytics), web scraping and designing instruments for user publications at the portals and beyond. -
Time-Travel Debugging for Javascript/Node.Js
Time-Travel Debugging for JavaScript/Node.js Earl T. Barr Mark Marron Ed Maurer University College London, UK Microsoft Research, USA Microsoft, USA [email protected] [email protected] [email protected] Dan Moseley Gaurav Seth Microsoft, USA Microsoft, USA [email protected] [email protected] ABSTRACT Time-traveling in the execution history of a program during de- bugging enables a developer to precisely track and understand the sequence of statements and program values leading to an error. To provide this functionality to real world developers, we embarked on a two year journey to create a production quality time-traveling de- bugger in Microsoft’s open-source ChakraCore JavaScript engine and the popular Node.js application framework. CCS Concepts •Software and its engineering ! Software testing and debug- Figure 1: Visual Studio Code with extra time-travel functional- ging; ity (Step-Back button in top action bar) at a breakpoint. Keywords • Options for both using time-travel during local debugging Time-Travel Debugging, JavaScript, Node.js and for recording a trace in production for postmortem de- bugging or other analysis (Section 2.1). 1. INTRODUCTION • Reverse-Step Local and Dynamic operations (Section 2.2) Modern integrated development environments (IDEs) provide a that allow the developer to step-back in time to the previously range of tools for setting breakpoints, examining program state, and executed statement in the current function or to step-back in manually logging execution. These features enable developers to time to the previously executed statement in any frame in- quickly track down localized bugs, provided all of the relevant val- cluding exception throws or callee returns. -
Investigating Reason As a Substitute for Javascript
DEGREE PROJECT IN COMPUTER ENGINEERING, FIRST CYCLE, 15 CREDITS STOCKHOLM, SWEDEN 2020 Investigating Reason as a substitute for JavaScript AXEL PETTERSSON KTH ROYAL INSTITUTE OF TECHNOLOGY SCHOOL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE Investigation of Reason as a substitute for JavaScript AXEL PETTERSSON Degree Programme in Information and Communication Technology Date: June 4, 2020 Supervisor: Thomas Sjöland Examiner: Johan Montelius School of Electrical Engineering and Computer Science Host company: Slagkryssaren AB Swedish title: Undersökning av Reason som ett substitut till JavaScript Investigation of Reason as a substitute for JavaScript / Undersökning av Reason som ett substitut till JavaScript c 2020 Axel Pettersson Abstract | i Abstract JavaScript has in recent years become one of the most utilized programming languages for developing different kinds of applications. However, even though it has received a lot of praise for its simplicity, versatility and highly active community, it lacks some functionalities and features that a lot of programmers highly value, like static and strict typing, compile-time debugging, and to not be required to make use of third-party libraries to integrate crucial functionality. However, several new languages built on top of JavaScript have been developed to address and resolve these issues developers find with JavaScript without losing the benefits that come with it. One of these super- set languages is Reason, the new syntax and toolchain powered by the OCaml compiler. This thesis aims to address whether there are scenarios where Reason could act as a reasonable substitute of JavaScript by investigating how the languages compare in regards to different criteria. The criteria examined are writability, data structures and typing, reliability and testing, community support, market demand, portability, and performance.