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ActiveX Control Alarm

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Implementation of an Alarm ActiveX Control
ACTIVEX CONTROLS

AIM
Implementation of an Alarm ActiveX Control.
THEORY
THE EVOLUTION OF ACTIVEX
OLE (Object Linking and Embedding) is Microsoft’s framework for a compound document technology. Briefly, a compound document is something like a display desktop that can contain visual and information objects of all kinds. Each desktop object is an independent program entity that can interact with a user and also communicate with other objects on the desktop.
1. OLE 1.0 was the evolution of the original dynamic data exchange, or DDE, concepts that Microsoft developed for earlier versions of Windows. While DDE was limited to transferring limited amounts of data between two running applications, OLE was capable of maintaining active links between two documents or even embedding one type of document within another.
2. OLE 2.0 was the next evolution of OLE 1.0, sharing many of the same goals, but was re-implemented over top of the Component Object Model instead of using VTBLs.
New features were automation, drag-and-drop, in-place activation and structured storage.
3. In 1996, Microsoft renamed the OLE 2.0 technology to ActiveX. ActiveX introduced ActiveX Controls, Active Documents and Active Scripting (built on top of OLE Automation). This version of OLE is commonly used by Web designers to embed multimedia files in Web pages.
ACTIVEX
ActiveX is the name Microsoft has given to a set of “strategic” object-oriented programming technologies and tools. The main technology is the Component Object Model (COM). The main thing created when writing a program to run in the ActiveX environment is a component, a self-sufficient program that can be run anywhere in the ActiveX network. This component is known as an ActiveX control.

ActiveX is Microsoft’s answer to the Java technology from Sun Microsystems. An ActiveX control is roughly equivalent to a Java applet. One of the main advantages of a component is that it can be re-used by many applications (referred to as component containers).

ACTIVEX CONTROL
ActiveX Control is a Microsoft term that is used to denote reusable software components that are based on Microsoft COM. ActiveX controls provide encapsulated reusable functionality to programs and they are typically but not always visual in nature.
1. ActiveX controls can be downloaded as small programs or animations for Web pages, but they can also be used for any commonly-needed task by an application program in the latest Windows and Macintosh environments. In general, ActiveX controls replace the earlier OCX (Object Linking and Embedding custom controls).
2. An ActiveX control can be created in any programming language that recognizes Microsoft’s Component Object Model. It can be created using one of several languages or development tools, including C++ and Visual Basic, or PowerBuilder, or with scripting tools such as VBScript.
3. In implementation, an ActiveX control is a dynamic link library (DLL) module. An ActiveX control runs in what is known as a container, an application program that uses the Component Object Model program interfaces. This reusable component approach to application development reduces development time and improves program capability and quality.
4. An ActiveX control is roughly equivalent in concept and implementation to the Java applet.
WHAT HAPPENS WHEN A WEB PAGE USES AN ACTIVEX CONTROL
What a web page requests an ActiveX control the browser determines if that control is already loaded onto the system. If it is the ActiveX control is executed. If not, the user is asked if it is okay to install the control. Additional information about where the control came from and its security implications is also included.
If the security is set to high, the browser will not download the control. If security is set to medium, the browser will prompt to ask if it is to be downloaded. If security is low (not recommended), the browser automatically downloads the control.
To run an ActiveX control, the system must have certain Visual Basic support libraries installed. If it does not, the browser will download them, usually from Microsoft’s Web site. Once a control like this has been downloaded, the necessary files will also be downloaded so this will not be necessary the next time, so the control’s download will be much faster.


ACTIVEX CONTROLS VS. JAVA APPLETS
An ActiveX control is similar to a Java applet. Both are downloaded and executed by the web browser.

·      Unlike Java applets, however, ActiveX controls have full access to the Windows operating system. This gives them much more power than Java applets, but with this power comes a certain risk that the applet may damage software or data on the machine. Java on the other hand, sets specific rules to what an applet can and cannot do, and generally these rules do an excellent job of preventing damage to a system
·      Another difference between Java applets and ActiveX controls is that Java applets can be written to run on all platforms, whereas ActiveX controls are currently limited to Windows environments.

SECURITY ISSUES INVOLVING ACTIVEX

ActiveX controls can do anything a normal Visual Basic program can. For example, a control can erase the hard disk, or shut down or reboot the system.
ActiveX controls are thus unsafe for users of Internet Explorer who turn on the browser’s ability to download and activate ActiveX controls within a web page. The problems occur when a user surfs to a non-trusted web page and that web page contains a malicious ActiveX control. This is a very common means of distributing malware to unwitting users of Internet Explorer; the easiest way to avoid it is to not install ActiveX controls from untrusted sites.
To provide some small measure of protection, Microsoft invented a signature scheme. This lets a control designer digitally sign their controls with the help of a signature authority. Later, when a web page is visited that uses the control; the browser can verify that the control was written by the person who signed it. This does not guarantee that the control is safe, but at least the author of the control is known. This is most important when someone copies a control from one Web site to another. The signature lets you know who the original author was. 
CONCLUSION
ActiveX controls find use in linking desktop applications to the Web as well as in creating interactive web content for applications.
Since the security issues are not foolproof, it is generally avoided in the use in web pages, if however it is being used in an intranet (a web local to a company) then it can be used freely. In this case, one has far more control over the user environment than that on the web.

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Mozilla as Free Open Source Software

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To study Mozilla as an example of Free Open Source Software.
AIM:  To study Mozilla as an example of Free Open Source Software.
THEORY: Mozilla is a web based browser based on the same program code as Netscape Navigator. It is the product of open source software development initiated by Netscape several years ago. It has a feel and look that is nearly identical to Netscape Navigator and includes features that you get in Internet Explorer in full screen mode. It can import and access your bookmarks. Mozilla’s special feature is its ability to display multiple web pages in same program window as opposed to cluttering desktop with several browser windows each open for different website or page. Mozilla is available for free download from mozilla.org.
HISTORY:
·        Started in the year 1998.
  • Originally known as Phoenix September 2002-April 14, 2003 and briefly as Mozilla Firebird.
  • February 9, 2004 to Mozilla Firefox
  • Started as a experimental branch of Mozilla suite.
  • There were 60 core developers and more than 1000 contributors from various firms in this project.
  • The browser has a 2 million line of source code.
FEATURES:
·        Pop up blocker, tabbed browsing, live bookmarks, incremented find features and customized download manager.
·        Mouse gestures, advertisement blocking, proxy server switching and bugging codes.
·        Mozilla update, a website containing themes and extensions approved for Mozilla updating.
·        People who report a valid critical security bug receive a US $500 cash reward and a Mozilla t-shirt.
·        Search engine like Google, Yahoo now offer Firefox extensions for easily accessing their services.
 FIREFOX vs INTERNET  EXPLORER
  • Firefox is more secure.
  • User friendly Features.
  • Better built in popup blocker than Internet Explorer.
  • Aspect of Firefox is tabbed browsing.
  • Integrated Search engine.
  • Download manager Pause.
  • Display correct height pixels.
CONCLUSION: Hereby we have studied the Mozilla Firefox, its brief history and its features which are present.

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Active X DLL in VB.Net

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To create  an active x  dll in vb.net 
AIM—  To create  an active x  dll in vb.net .
THEORY—
Active x is a technology using which we can create user defined controls .it is not a programming language but rather a set of rules for how applications should share information. an active x can be developed in a variety of languages including c,c++,vb or java .
active x components –it is a general term that consists of three types of projects –
a) active x  dll.
b) active x  exe.
c) active x  controls.
ACTIVE X DLL—a dynamic link library project allows you to create your own type library.
you can create your own library of classes in a project ,compile it to a dll , then reference the dll from other projects to use the functionality (call methods and properties )of the classes your dll contains .the main advantage using a dll is code reuseability ,compile your classes in a dll ,then reference that one dll from as many applications as you like.
ACTIVE X EXE—an activex exe acts in a way like a standard exe, but it needs to be registered to run (like all other activex objects )and like an activex dll it exposes classes that clients can create and use .
there is a big difference between activex dll and exe. the dll is an `in-proc` server , that is it runs in the same memory space . of the main application ,unlike the exe that is a `out-proc ` server and therefor runs in its own memory space (it is basically another application running)for this reason it is much faster to call a dll , because there  is no marshalling  of data between two  processes .
typically activex exe are used to create windows “servers “ that can run locally or remotely in another computer .
ACTIVE X CONTROL –an active x control is also a server application that exposes its functionality through an interface consisting of properties , methods &events
an active x control is similar to java applet .unlike java applets however , active x controls have full access to the windows operating system .this gives them much more power than java applels but with this power comes a certain risk that the applet may damage .software or data on your machine . to control this risk ,microsoft developed a registration system so that browsers can identify and authenticate an active x control before downlpoading it.
active x controls provide the same functionality as dll and axes but are more firmly integrated to the language and they have a visible interface .on the other hand active x dll and activex exe are written code consisting of classes &methods.
  PROCEDURE—
1) open visual basic ide. create a new project of type class          library giving it a suitable name .
2) write the necessary code and create classes for the project.
3) save the project & close it.
4) create a new project(windows application).
5) add the previousp roject as a reference to the new project.
6) use the objects oftype classlibrary.class in your project.
APPLICATIONS—
1) display various types of gauges and indicators.
2) display data in grids .
3) send and receive faxes.
4) play audio display vidieo.
5) scan bar codes.
6) display calenders.
CONCLUSION—we  have  successfully created an active x dll  application and is working fine,showing all the methods and properties for the object variables.

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Open Office as Free Open Software

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To study open office as an example of free open software
Aim
To study open office as an example of free open software.
Theory
Mission Statement
“To create, as a community, the leading international office suite that will run on all major platforms and provide access to all functionality and data through open-component based APIs and an XML-based file format.”
History of Open Office
  • It is based on Star Office, an office suite developed by Star Division and acquired by Sun Microsystems in August 1999.
  • The source code of the suite was released in July 2000 with the aim of reducing the dominant market share of Microsoft Office by providing a free, open and high-quality alternative.
Everything you need in an office productivity suite
Writer –– a word processor for creating dynamic documents
Calc –– a spreadsheet for analyzing data
Impress –– for designing eye-catching presentations
Draw –– for producing dramatic illustrations
Base – database access made easy
Write
– Wizards to produce standard documents such as
Letters, faxes, agendas, minutes.
– Styles and Formatting to put the power of style
Sheets into the hands of every user.
– AutoCorrect dictionary, which can check your
Spelling as you type...
– AutoComplete to make typing easy
– Text frames and linking for newsletters, flyers, etc…
–        Table of contents, index for complex documents.
Calc
– Natural language formulas let you create formulas
using words ((e.g. “sales – costs”)).
– Hundreds of spreadsheet functions with built–-in
expert help
– Scenario Manager allows “what if ......” analysis at the
touch of a button.
– Powerful graphics to extract the meaning from your
numbers
– Pull in data from external databases with DataPilot
technology
– OpenDocument and MS-Excel .xls file format
Compatibility
Impress
– Master Pages and Layouts simplify the task off
preparing your materials.
– Complete range of Views are supported: Normal //
Outline // Slide Sorter // Notes // Handouts to meet all
the needs of presenters and audiences.
– Easy–-to–-use drawing and diagramming tools to spice
up your presentation.
– Slide show Animation and Effects to bring a
presentation to life.
– Fontworks provides stunning 2D and 3D images from
text.
– OpenDocument and MS-PowerPoint .ppt file format
Compatibility.
Draw
– Single click access to common drawing objects
– Arrange objects; rotate in two or three dimensions
with the 3D controller
– Smart connectors for flowcharts, organization charts,
network diagrams etc
– Sophisticated rendering for photorealistic images
– Import graphics from all common formats ((including
BMP, GIF, JJPEG, PNG, TIFF, and WMF)
–        Store drawings in OpenDocument format.
Conclusion
OpenOffice was installed in Linux and examined that various features of this free suite.

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Basics of Hacking and Penetration Testing

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The Basics of Hacking and Penetration Testing
Basics of Hacking and Penetration Testing 1
 The Basics of Hacking and Penetration Testing serves as an introduction to the steps necessary to complete or perform penetration testing ethical hacking. This book covers the use of one example (pen test targets) all the way through the book that allows you to clearly see how the equipment and associated phase. Each chapter contains hands-on examples to teach you how to interpret results and use those results at a later stage Written by an author who has practical experience as a Penetration Tester and who has taught “Introduction to Penetration Testing” for 5 years Utilizing Backtrack Linux distributions and “cor.

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Schaum’s Outline of Software Engineering

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McGraw.Hill,.Theory.and.Problems.of.Software.Engineering

Schaum's Outline of Software Engineering 2

Designed to assist students and professors in software engineering courses and degree programs, Schaum’s Outlinne of Software Engineering presents the theory and techniques of software engineering as a series of steps that students can apply to complete any software project successfully. An ideal supplement to all leading textbooks, it provides more than 200 detailed problems with step-by-step solutions, clear, concise explanations of all relevant concepts and applications, and complete coverage of the material taught in the course.

Download Ebook

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