iOS hook：fishhook

//
//  ViewController.m
//  testFishHook
//
//  Created by liuyaqiang on 2020/7/9.
//  Copyright © 2020 KTM. All rights reserved.
//

#import "ViewController.h"
#import "fishhook.h"
@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    
    struct rebinding nslog;
    nslog.name = "NSLog"; //原函数名
    nslog.replacement = myNSLog; //新函数地址
    nslog.replaced = (void **)&sys_nslog;//要保存的原始函数的地址
    struct rebinding rebs[1] = {nslog};
    
    //arge1:rebs存放rebinding机构体数组，arg2：数组的长度
    rebind_symbols(rebs, 1);
    
}
static void (* sys_nslog)(NSString *format, ...);

void myNSLog(NSString *format, ...){
    format = [format stringByAppendingFormat:@"my log"];
    sys_nslog(format);
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    NSLog(@"touch");
}
@end