hooking
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In computer programming, hooking is a range of techniques used to alter or augment the behaviour of an operating system, of applications, or of other software components by intercepting function calls or messages or events passed between software components. Code that handles such intercepted function calls, events or messages is called a hook.
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- Stack Exchange tag
- stackoverflow.com/tags/hook
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~20 min read
Article
18 sectionsContents
- Methods
- Source modification
- Symbol wrapping
- Runtime modification
- Sample code
- Virtual method table hooking
- C# keyboard event hook
- API/function hooking/interception using JMP instruction aka splicing
- Netfilter hook
- Internal IAT hooking
- See also
- References
- External links
- Windows
- Linux
- Emacs
- OS X and iOS
- In Depth API Hooking
In computer programming, hooking is a range of techniques used to alter or augment the behaviour of an operating system, of applications, or of other software components by intercepting function calls or messages or events passed between software components. Code that handles such intercepted function calls, events or messages is called a hook.
Hook methods are of particular importance in the template method pattern where common code in an abstract class can be augmented by custom code in a subclass. In this case each hook method is defined in the abstract class with an empty implementation which then allows a different implementation to be supplied in each concrete subclass.