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Static analysis and dynamic operation based detection of atomic violation of JS (JavaScript) code in Web application

A technology of static analysis and dynamic operation, applied in the field of computer and software engineering, it can solve the problems of violation, JS event uncertainty request shared variables, etc., and achieve the effect of improving detection accuracy

Inactive Publication Date: 2015-11-25
NANJING UNIV
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Problems solved by technology

[0011] On the basis of the existing work, the problem to be solved by the present invention is: to overcome the JS event uncertainty existing in the web application request process, the cross-terminal nature of the request, and the shared variables in the same type of request, and to detect possible atomic sexual violations, thus effectively guaranteeing the quality of web applications

Method used

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  • Static analysis and dynamic operation based detection of atomic violation of JS (JavaScript) code in Web application
  • Static analysis and dynamic operation based detection of atomic violation of JS (JavaScript) code in Web application
  • Static analysis and dynamic operation based detection of atomic violation of JS (JavaScript) code in Web application

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Embodiment Construction

[0051] The method of the present invention combines static analysis and dynamic analysis methods to deal with the atomicity violation problem related to JS codes in Web applications, that is: through static analysis, select relevant elements involved in the entire process of Web application request-response to record; and then operate according to the atomicity It has the abstract features to design the judgment rules of atomicity violation; then use dynamic analysis technology to extract the elements and runtime information that need to be analyzed from the running track, and convert the rules into specific judgment conditions; finally, integrate the analysis script Run it in the tool Jalangi to determine whether there is an operation that violates atomicity in the process of the asynchronous call.

[0052] Process flow of the present invention such as figure 1 As shown, it specifically includes the following five steps.

[0053] Step 1: In order to ensure the effect of the ...

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Abstract

The invention provides a static analysis and dynamic operation based detection method of atomic violation. The method comprises the following steps: a function and a method related to asynchronous call in JS are acquired through static analysis of a JS code, and code coverage is guaranteed; a dynamic instrumentation record mechanism of a cross-language platform is adopted, a probe point is arranged in an asynchronous call function, not only can elements in JS program be obtained, but also elements in an HTML (hypertext markup language) mode can be recorded, and the accuracy of detection of potential atomic violation is improved; decision rules of atomic violation are designed according to the elements related in the whole process from a request to response of the a Web application, so that effective detection of atomic violation can be performed.

Description

technical field [0001] The invention belongs to the technical field of computers, especially the technical field of software engineering. The invention provides a method based on static analysis and dynamic operation for detecting atomicity violation of JavaScript codes in Web applications, which can ensure the quality of Web applications and improve performance. Background technique [0002] The rapid development of Web applications benefits from the strong support of server-side languages ​​(such as PHP) and client-side languages ​​(such as JavaScript). Compared with the traditional cumbersome Java Web development, today's Web development uses more lightweight Web frameworks, which is both an opportunity and a challenge for the front-end scripting language JavaScript. [0003] JavaScript (hereinafter referred to as JS) is an event-based scripting language, and its closure and asynchronous features are powerful tools to support rapid Web development. [0004] A closure is...

Claims

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Application Information

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IPC IPC(8): G06F11/36
Inventor 许蕾王德智李言辉徐宝文
Owner NANJING UNIV
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