如何将LC_LOAD_DYLIB命令插入Mach-O二进制文件或将静态库加入现有二进制文件（IOS） [英] How to insert a LC_LOAD_DYLIB command into a Mach-O binary or join a static library to an existing binary (IOS)
问题描述
这是我第一次询问stackoverflow而且我很绝望。
This is the first time I am asking on stackoverflow and I am desperate.
我的任务是加载dylib或将静态lib加入已存在的可执行文件对于IOS设备。
My task is to load a dylib or join a static lib to an already existing executable for an IOS device.
我将使用 static void __attribute __（（构造函数））initialize（void）开始调酒。
这个可执行文件适用于内部企业appstore，所以我不需要通过苹果appstore（因为他们会拒绝它）。
I will be using the static void __attribute__((constructor)) initialize(void) to start the swizzling.
This executable is for in house enterprise appstore so i do not need to go thru the apple appstore (since they will reject it).
这个的原因是从客户及其签名密钥中获取现有的IPA，并在不需要开发人员干预的情况下为其应用程序添加新功能。
The reason for this is to take an existing IPA from a customer and their signing keys and add a new functionality to their application without requiring a developer intervention.
有一家公司正在这样做，称为nukona 。您可以在此处观看电影： https://www.youtube.com/watch ？feature = player_embedded& v = z9rrOB6lOxY
There is one company doing that called nukona. You can watch the movie here: https://www.youtube.com/watch?feature=player_embedded&v=z9rrOB6lOxY
我可以告诉你，我试图用一个 DYLD_INSERT_LIBRARIES把LSEnvironment放在plist文件中但事实证明LSEnvironment似乎对IOS应用程序的沙箱没有任何影响。
I can tell you that i tried to put LSEnvironment inside the plist file with a DYLD_INSERT_LIBRARIES but it turns out LSEnvironment does not seem to have any effect in the sandbox of an IOS application.
我还尝试使用install_name_tool更改其中一个依赖项并将其替换为我的dylib（也具有该依赖性）。它崩溃而没有信息原因。
I also tried install_name_tool for changing one of the dependencies and replacing it with my dylib (which has that dependecy as well). It crashes without information why.
显然，如果我将dylib添加到XCode中的测试应用程序并重新编译它是完美的，这是给定的。但是，这是我不能要求的，例如，公司的管理员。重建可能会阻止客户使用此库。
Obviously, if i add the dylib to a test application in XCode and recompile it works perfectly which is a given. However, this is something i cannot ask, for example, an administrator of a company. Rebuilding may deter customers of using this lib.
这是我在堆栈溢出时发现的相关链接，但对于osx而言，我需要它用于IOS。
如何将LC_LOAD_DYLIB命令插入Mach-O二进制文件（OSX）
Here is a related link i found on stack overflow but for osx and i need it for IOS. How to insert a LC_LOAD_DYLIB command into a Mach-O binary (OSX)
我唯一可以想到的是编辑二进制加载命令一些如何，但我不确定如何以及如何考虑重新安置表等...
The only thing i can think off is to edit the binary load commands some how, but i am not sure how and how to do it taking into account the relocation tables etc...
欢迎任何替代方案。
感谢您的时间。
推荐答案
我是开源的 optool 就是这样做的（我没有在iOS上测试它但它应该可以工作。打开一个问题如果你有问题）
I open-sourced optool which does exactly this (I haven't tested it on iOS but it should work. Open up an issue if you have problems)
这篇关于如何将LC_LOAD_DYLIB命令插入Mach-O二进制文件或将静态库加入现有二进制文件（IOS）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
