instago/httpresp.go at master · siongui/instago · GitHub

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package instago

// This file sends HTTP requests and gets HTTP responses.

import (
	"errors"
	"io/ioutil"
	"net/http"
	"strconv"
)

// Send HTTP request and get http response without login and with gis info. Used
// in get all post codes without login.
func getHTTPResponseNoLoginWithGis(url, gis string) (b []byte, err error) {
	req, err := http.NewRequest("GET", url, nil)
	if err != nil {
		return
	}

	req.Header.Set("User-Agent", appUserAgent)
	req.Header.Set("X-Requested-With", "XMLHttpRequest")
	req.Header.Set("X-Instagram-GIS", gis)

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

	if resp.StatusCode != 200 {
		err = errors.New(url +
			"\nresp.StatusCode: " + strconv.Itoa(resp.StatusCode))
		return
	}

	return ioutil.ReadAll(resp.Body)
}

// Send HTTP request and get http response without login.
func GetHTTPResponseNoLogin(url, method string) (b []byte, err error) {
	if method != "POST" {
		method = "GET"
	}

	req, err := http.NewRequest(method, url, nil)
	if err != nil {
		return
	}

	req.Header.Set("User-Agent", appUserAgent)

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

	if resp.StatusCode != 200 {
		err = errors.New(url +
			"\nresp.StatusCode: " + strconv.Itoa(resp.StatusCode))
		return
	}

	return ioutil.ReadAll(resp.Body)
}

// Send HTTP request and get http response on behalf of a specific Instagram
// user. After login to Instagram, you can get the cookies of *ds_user_id*,
// *sessionid*, *csrftoken* in Chrome Developer Tools.
// See https://stackoverflow.com/a/44773079
// or
// https://github.com/hoschiCZ/instastories-backup#obtain-cookies
func (m *IGApiManager) getHTTPResponse(url, method string) (b []byte, err error) {
	if method != "POST" {
		method = "GET"
	}

	req, err := http.NewRequest(method, url, nil)
	if err != nil {
		return
	}

	for name, value := range m.cookies {
		req.AddCookie(&http.Cookie{Name: name, Value: value})
	}

	for name, value := range m.headers {
		req.Header.Set(name, value)
	}

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

	if resp.StatusCode != 200 {
		err = errors.New(url +
			"\nresp.StatusCode: " + strconv.Itoa(resp.StatusCode))
		return
	}

	return ioutil.ReadAll(resp.Body)
}