macho/macho-go/cmd/extract-section/main.go

package main

import (
	"github.com/alecthomas/kong"
	"ios-wrapper/pkg/ios/macho"

	"bytes"
	"fmt"
	"os"
)

type Argument struct {
	One string `arg short:"o" required help:"" type:"existingfile"`
	Two string `arg short:"t" required help:"" type:"existingfile"`
}

func main() {
	var cli Argument
	kong.Parse(&cli)

	compare(cli.One, cli.Two)
}

func compare(one string, two string) {
	f1, _ := os.OpenFile(one, os.O_RDONLY, 0644)
	f2, _ := os.OpenFile(two, os.O_RDONLY, 0644)

	var mc1 macho.MachoContext
	var mc2 macho.MachoContext
	mc1.ParseFile(f1, 0)
	mc2.ParseFile(f2, 0)

	s1 := mc1.FindSection("__text")
	s2 := mc2.FindSection("__text")

	if s1.Size() == s2.Size() {
		fmt.Println("Size is equal")
	} else {
		fmt.Printf("%x <> %x\n", s1.Size(), s2.Size())
	}

	data1 := mc1.Cut(uint64(s1.Offset()), s1.Size())
	data2 := mc1.Cut(uint64(s2.Offset()), s2.Size())
	if bytes.Compare(data1, data2) == 0 {
		fmt.Println("Data is equal")
	}
}