dniquery.go

package main

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"regexp"
	"strings"
)

type JNE struct {
	// Request
	DNI string `json:"CODDNI,omitempty"`
	// Response
	Data    string `json:"data,omitempty"`
	Success bool   `json:"success,omitempty"`
	Mensaje string `json:"mensaje,omitempty"`
}

func main() {
	log.SetFlags(0)

	if len(os.Args) < 2 {
		log.Fatalf("USAGE:\n\t%s {number}\n", os.Args[0])
	}

	dni := os.Args[1]
	if matched, _ := regexp.MatchString(`^\d{8}$`, dni); !matched {
		log.Fatalln("ERROR: Argument is not numeric.")
	}

	result, err := query(dni)
	if err != nil {
		log.Fatalln(err)
	}

	parts := strings.Split(result, "|")
	fmt.Println("DNI NUM:", parts[0])
	fmt.Println("PATERNO:", parts[1])
	fmt.Println("MATERNO:", parts[2])
	fmt.Println("NOMBRES:", parts[3])
}

func query(dni string) (string, error) {
	model := JNE{DNI: dni}
	data, err := json.Marshal(model)
	if err != nil {
		return "", err
	}

	req, err := http.NewRequest("POST", "https://aplicaciones007.jne.gob.pe/srop_publico/Consulta/api/AfiliadoApi/GetNombresCiudadano", bytes.NewReader(data))
	if err != nil {
		return "", err
	}
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("RequestVerificationToken", "Dmfiv1Unnsv8I9EoXEzbyQExSD8Q1UY7viyyf_347vRCfO-1xGFvDddaxDAlvm0cZ8XgAKTaWclVFnnsGgoy4aLlBGB5m-E8rGw_ymEcCig1:eq4At-H2zqgXPrPnoiDGFZH0Fdx5a-1UiyVaR4nQlCvYZzAhzmvWxLwkUk6-yORYrBBxEnoG5sm-Hkiyc91so6-nHHxIeLee5p700KE47Cw1")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return "", err
	}

	err = json.Unmarshal(body, &model)
	if err != nil {
		return "", err
	}

	if !model.Success {
		return "", errors.New("jne: not success: " + model.Mensaje)
	}
	if model.Data == "||" {
		return "", errors.New("jne: empty data: " + dni)
	}
	return dni + "|" + model.Data, nil
}