如何从函数地址或类中找到CFBundleRef

发布于 2024-10-14 14:17:33 字数 386 浏览 11 评论 0原文

是否可以从Carbon中的函数地址或类名获取Bundle引用（CFBundleRef）？？

中有函数，

NSBundle myBundle = [NSBundle bundleForClass:(Class)<SOME_CLASS>];

我知道 Objective-C和 Windows API

GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCTSTR)<SOME_FUNCTION>, &outModule);

在 Mac 上有类似的 C++ 或任何其他方法吗？

谢谢，阿比奈。

原文

Is it possible to get the Bundle reference (CFBundleRef) from a function address or a class name in Carbon..??

I know there are functions in Objective-C

NSBundle myBundle = [NSBundle bundleForClass:(Class)<SOME_CLASS>];

and with Windows API

GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCTSTR)<SOME_FUNCTION>, &outModule);

Is there anything similar or any other method with C++ on a mac??

Thanks,
Abhinay.

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疏忽 2024-10-21 14:17:33

您可以使用在 CFBundle 上运行的 Core Foundation 函数获取对导出给定函数名称的包的包引用：

CFStringRef functionName = CFSTR("someFunctionName");
CFArrayRef allBundles = CFBundleGetAllBundles();
CFIndex i;
CFIndex bundleCount = CFArrayGetCount(allBundles);

for (i = 0; i < bundleCount; i++) {
    CFBundleRef bundle = CFArrayGetValueAtIndex(allBundles, i);
    void *functionPointer = CFBundleGetFunctionPointerForName(bundle, functionName);
    if (functionPointer != NULL) {
        // bundle points to a bundle that exports functionName
    }
}

并且由于 CFBundleGetDataPointerForName() 返回指向给定符号名称的数据指针一个包，我相信它也可以用于类名称，因为类是使用符号名称_OBJC_CLASS_$_导出的，例如_OBJC_CLASS_$ _NSArray。

据我所知，没有任何函数允许您通过指定函数地址来检查包是否导出函数。

You can use the Core Foundation functions that operate on CFBundle to get the bundle reference to the bundle that exports a given function name:

CFStringRef functionName = CFSTR("someFunctionName");
CFArrayRef allBundles = CFBundleGetAllBundles();
CFIndex i;
CFIndex bundleCount = CFArrayGetCount(allBundles);

for (i = 0; i < bundleCount; i++) {
    CFBundleRef bundle = CFArrayGetValueAtIndex(allBundles, i);
    void *functionPointer = CFBundleGetFunctionPointerForName(bundle, functionName);
    if (functionPointer != NULL) {
        // bundle points to a bundle that exports functionName
    }
}

And since CFBundleGetDataPointerForName() returns a data pointer to a given symbol name in a bundle, I believe it can be used for class names as well since a class is exported with a symbol name _OBJC_CLASS_$_<className>, e.g. _OBJC_CLASS_$_NSArray.

As far as I can tell, there’s no function that allows to you to inspect whether a bundle exports a function by specifying the function address.

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