在运行时动态下载并执行iOS代码 [英] Download and execute iOS code dynamically at runtime

问题描述

作为学术和心理练习，如何在iOS设备上下载预编译的二进制文件并在其中执行方法？

As an academic and mental exercise, how would one download a precompiled binary file and execute methods in it on an iOS device?

据我所知，这违反了Apple的许可协议第3.2.2节，但我要求提供个人项目并了解有关iOS运行时的更多信息。

I understand this violates Apple's License Agreement, section 3.2.2, but I am asking for personal projects and to learn more about the iOS runtime.

目标

• 下载 http://someexample.com/MyCoolBinary.a


• 将下载的二进制文件保存到设备磁盘。


• 调用二进制文件中存在的已知方法。

我是什么已经尝试了

我没有尝试任何具体的东西，但我想可以按照......的方式做一些事情。 p>

I haven't attempted anything concrete, but I would imagine that it would be possible to do something along the lines of...

void *myDownloadedLibrary = dlopen("/path/to/newly/downloaded/framework/MyCoolBinary.framework")
dlsym(myDownloadedLibrary)

任何关于哪种库可以使用的示例或指针都将不胜感激。< br>
谢谢。

Any examples or pointers on what kind of libraries this would work with would be appreciated.
Thanks.

推荐答案

尝试类似

void *uikit = dlopen("path_to_dylib", RTLD_LAZY);
id (*FunctionName)(id) = dlsym(uikit, "FunctionName");
FunctionName(arg1);
dlclose(uikit);

有关详细信息，请参阅此处的动态加载：
http://en.wikipedia.org/wiki/Dynamic_loading

For more information you can read about dynamic loading here: http://en.wikipedia.org/wiki/Dynamic_loading

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