How to List All +load Methods in App
Objective C +load method is a magical and evil method.
- When beginners get it, will be amazed by its magic.
- When experts get it, will be addicted unable to extricate.
- When veterans get it, will be terrified by its evil.
Most large Apps already or are trying to get rid of it. Then, how to quickly see how many +load methods in your App, see how deep the poison.
Assume scenario below:
One day you happily debugging program with Xcode,
Open Xcode, press F5,
Suddenly, you want to see how many +load methods in App?
Click Pause, then input
br s -r "\+\[.+ load\]$"
Then input
br list
Perhaps you’ll be surprised, turns out my App has so many (or few) +load methods
Principle
Used lldb’s breakpoint command.
br s -r "regex"
is
breakpoint set -r "regex"
Set breakpoint through regex matching symbols.
Small Question
Then think, if code in these +load methods crashes, can your crash monitoring (bugly, etc.) monitor it?
Of course 90% answer is: Won’t Crash.
Makes me think of Trump’s words: My “code” is perfect.
Haha :)
Summary
Very interesting:)
Ah, I’m so inexperienced, I need to learn “Bridge-based Full Method Hook” now
http://satanwoo.github.io/2020/04/26/TrampolineHookOpenSource/
If everyone likes, follow subscription account to encourage:
