Internet Tepat logs your original URL and use your MSISDN for AD tracking.

internet_tepat.go

package main

import (
	"bytes"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"net/http"
	"net/http/httputil"
	"regexp"
	"time"
)

var adsReqObjRegExp = regexp.MustCompile(`adsReqObj\s=\s(.*);`)

type myTrans struct {
	p http.RoundTripper
}

var _ http.RoundTripper = (*myTrans)(nil)

func (t *myTrans) RoundTrip(req *http.Request) (resp *http.Response, err error) {
	resp, err = t.p.RoundTrip(req)
	if err != nil {
		return
	}
	return
}

func main() {
	useStatic := flag.Bool("use-static", false, "Use static")
	flag.Parse()

	// **INFO**
	// Known blackhole portal logger:
	// - https://internetbaik.telkomsel.com/block?orig_url=
	// - https://internettepat.telkomsel.com/dns?orig_url=
	// Use your ISP DNS and let they redirect you to their logger.

	var url string
	if *useStatic {
		url = "https://internettepat.telkomsel.com/dns?orig_url=MY_PRIVACY_GOT_BREACHED&plz-go-to-the-isp-blackhole-portal=1"
	} else {
		url = fmt.Sprintf("http://this-domain-does-not-exist%d.com/plz-go-to-the-isp-blackhole-portal/block?orig_url=MY_PRIVACY_GOT_BREACHED!",
			time.Now().Nanosecond())
	}

	req, err := http.NewRequest(http.MethodGet, url, nil)
	if err != nil {
		panic(err)
	}
	req.Header = http.Header{
		"User-Agent": {"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36"},
	}

	client := &http.Client{
		Transport: &myTrans{http.DefaultTransport},
	}

	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}

	if false {
		bb, _ := httputil.DumpResponse(resp, true)
		fmt.Printf("%s", string(bb))
	}

	bb, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}

	adsReqObjBufs := adsReqObjRegExp.FindAll(bb, -1)

	var m map[string]any
	for i, buf := range adsReqObjBufs {
		_, buf, _ = bytes.Cut(buf, []byte("="))
		buf = bytes.Trim(buf, " ;=")

		if err := json.NewDecoder(bytes.NewReader(buf)).Decode(&m); err != nil {
			fmt.Printf("can't decode i=%d: %s\n", i, err)
			continue
		}

		if false {
			fmt.Printf("i=%d : %+#v\n", i, m)
		}

		fmt.Println(m["mdn"])
	}
}