By Billy Hoffman
This e-book will be required studying for someone who's constructing, operating with, or maybe handling an online program. the applying does not also have to exploit Ajax. many of the options during this booklet are protection practices for non-Ajax purposes which were prolonged and utilized to Ajax; now not the opposite direction round. for instance, SQL injection assaults can exist no matter if an software makes use of Ajax or no longer, yet Ajax offers an attacker different "entry issues" to aim to assault your program. every one provider, strategy, and parameter is taken into account an access point.
After analyzing this publication, i'm discovering myself correcting defense blunders i'm basically be aware of discovering in my tasks. a few corrections i have made main issue JSON, the GET vs. put up factor, and others. With the corrections made, i think that my purposes are much more secure. This ebook helped make that occur.
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Extra info for Ajax Security
Unfortunately, even though the individual technologies that comprise Ajax have been around for years, their combined, cooperative use (essentially what we refer to as Ajax programming) is relatively new. There has not been much time or opportunity for individuals to learn the intricacies of Ajax development. Because Ajax is such a young technology, most technical resources are targeted at beginners. Also, virtually no one “rolls their own” Ajax framework. Instead, most people use one of the publicly-available third-party frameworks, such as Prototype.
The variable httpRequest is set by calling the method getHttpRequest. The getHttpRequest method creates an XMLHttpRequest object, which is the object that allows the page to make asynchronous requests to the server. If one class could be said to be the key to Ajax, it would be XMLHttpRequest (sometimes abbreviated as XHR). Some of the key properties and methods of XHR are open Specifies properties of the request, such as the HTTP method, to be used and the URL to which the request will be sent.
3. 4. 5. checkCredentials getSongPrice getAccountBalance debitAccount downloadSong The application programmers intended these methods to be called by the client in this exact order. First, the application would ensure that the user was logged in. Next, it would ensure that she had enough money in her account to purchase the song she requested. If so, then her account would be debited by the appropriate amount, and the song would be downloaded to her machine. This code will execute flawlessly on a legitimate user’s machine.