/
huya.go
235 lines (224 loc) · 6.64 KB
/
huya.go
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package HuYa
import (
"crypto/md5"
"encoding/base64"
"encoding/hex"
"errors"
"fmt"
"github.com/nv4d1k/live-stream-forwarder/global"
"io"
"log"
"math/rand"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
"time"
"github.com/nv4d1k/live-stream-forwarder/app/engine/forwarder/httpweb"
"github.com/tidwall/gjson"
)
type Link struct {
rid string
uid string
uidi int64
uuid string
res gjson.Result
client *http.Client
}
func NewHuyaLink(rid string, proxy *url.URL) (*Link, error) {
var (
err error
)
hy := new(Link)
hy.rid = rid
if proxy != nil {
hy.client = &http.Client{Transport: httpweb.NewAddHeaderTransport(&http.Transport{Proxy: http.ProxyURL(proxy)}, true)}
} else {
hy.client = &http.Client{Transport: httpweb.NewAddHeaderTransport(nil, true)}
}
err = hy.getRoomInfo()
if err != nil {
return nil, fmt.Errorf("get room info error: %w", err)
}
err = hy.getAnonymousUID()
if err != nil {
return nil, fmt.Errorf("get anonymous user id error: %w", err)
}
hy.getUUID()
return hy, nil
}
func (l *Link) GetLink() (*url.URL, error) {
switch l.res.Get("roomInfo.eLiveStatus").Int() {
case 2:
liveInfo, err := l.getLive()
if err != nil {
return nil, fmt.Errorf("get live info error: %w", err)
}
return url.Parse(liveInfo)
case 3:
liveLineURL, err := base64.StdEncoding.DecodeString(l.res.Get("roomProfile.liveLineUrl").String())
if err != nil {
return nil, fmt.Errorf("decoding live line url error: %w", err)
}
return url.Parse(fmt.Sprintf("https:%s", liveLineURL))
}
return nil, errors.New("not streaming now")
}
func (l *Link) getAnonymousUID() (err error) {
log := global.Log.WithField("function", "app.engine.extractor.HuYa.getAnonymousUID")
var (
resp *http.Response
body []byte
)
data := `{
"appId": 5002,
"byPass": 3,
"context": "",
"version": "2.4",
"data": {}
}`
resp, err = l.client.Post("https://udblgn.huya.com/web/anonymousLogin", "application/json", strings.NewReader(data))
if err != nil {
return fmt.Errorf("sending get anonymous uid request error: %w", err)
}
defer func(Body io.ReadCloser) {
err := Body.Close()
if err != nil {
log.Fatalln(err.Error())
}
}(resp.Body)
body, err = io.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("parsing get anonymous uid response body error: %w", err)
}
log.WithField("field", "anonymous uid response body").Debug(string(body))
if !gjson.GetBytes(body, "data.uid").Exists() {
return errors.New("anonymous user id not found")
}
l.uid = gjson.GetBytes(body, "data.uid").String()
l.uidi = gjson.GetBytes(body, "data.uid").Int()
return nil
}
func (l *Link) getLive() (string, error) {
var (
stream_info []string
)
l.res.Get("roomInfo.tLiveInfo.tLiveStreamInfo.vStreamInfo.value").ForEach(func(key, value gjson.Result) bool {
if value.Get("sFlvUrl").Exists() {
anticode, err := l.processAntiCode(value.Get("sFlvAntiCode").String(), value.Get("sStreamName").String())
if err != nil {
log.Println(fmt.Sprintf("processing anticode error: %s", err.Error()))
return false
}
u, err := url.Parse(fmt.Sprintf("%s/%s.%s?%s",
value.Get("sFlvUrl").String(),
value.Get("sStreamName").String(),
value.Get("sFlvUrlSuffix").String(),
anticode))
if err != nil {
log.Println(err.Error())
return false
}
u.Scheme = "https"
stream_info = append(stream_info, u.String())
}
if value.Get("sHlsUrl").Exists() {
anticode, err := l.processAntiCode(value.Get("sHlsAntiCode").String(), value.Get("sStreamName").String())
if err != nil {
log.Println(fmt.Sprintf("processing anticode error: %s", err.Error()))
return false
}
u, err := url.Parse(fmt.Sprintf("%s/%s.%s?%s",
value.Get("sHlsUrl").String(),
value.Get("sStreamName").String(),
value.Get("sHlsUrlSuffix").String(),
anticode))
if err != nil {
log.Println(err.Error())
return false
}
u.Scheme = "https"
stream_info = append(stream_info, u.String())
}
return true
})
if len(stream_info) <= 0 {
return "", errors.New("no validate link found")
}
r := rand.New(rand.NewSource(time.Now().Unix()))
return stream_info[r.Intn(len(stream_info)-1)], nil
}
func (l *Link) getRoomInfo() (err error) {
log := global.Log.WithField("function", "app.engine.extractor.HuYa.getRoomInfo")
var (
req *http.Request
resp *http.Response
body []byte
)
req, err = http.NewRequest("GET", fmt.Sprintf("https://m.huya.com/%s", l.rid), nil)
if err != nil {
return fmt.Errorf("making request for get room info error: %w", err)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header.Set("User-Agent", global.DEFAULT_MOBILE_USER_AGENT)
resp, err = l.client.Do(req)
if err != nil {
return fmt.Errorf("sending request for get room info error: %w", err)
}
defer func(Body io.ReadCloser) {
err := Body.Close()
if err != nil {
log.Fatalln(err.Error())
}
}(resp.Body)
body, err = io.ReadAll(resp.Body)
if err != nil {
return
}
re := regexp.MustCompile(`<script> window.HNF_GLOBAL_INIT = (.*) </script>`)
result := re.FindStringSubmatch(string(body))
if len(result) < 2 {
return errors.New("HNF_GLOBAL_INIT not found")
}
log.WithField("field", "room info").Debug(result[1])
l.res = gjson.Parse(result[1])
return nil
}
func (l *Link) getUUID() {
now := time.Now().UnixMilli()
r := rand.New(rand.NewSource(time.Now().UnixNano()))
random := int64(r.Intn(1000-0)+0) | 0
l.uuid = strconv.FormatInt((now%10000000000*1000+random)%4294967295, 10)
}
func (l *Link) processAntiCode(anticode string, streamname string) (params string, err error) {
log := global.Log.WithField("function", "app.engine.extractor.HuYa.processAntiCode")
q, err := url.ParseQuery(anticode)
if err != nil {
return "", fmt.Errorf("parsing anticode error: %w", err)
}
q.Set("ver", "1")
q.Set("sv", "2110211124")
q.Set("seqid", strconv.FormatInt(l.uidi+time.Now().UnixMilli(), 10))
q.Set("uid", l.uid)
q.Set("uuid", l.uuid)
ssb := md5.Sum([]byte(fmt.Sprintf("%s|%s|%s", q.Get("seqid"), q.Get("ctype"), q.Get("t"))))
ss := hex.EncodeToString(ssb[:])
fm_orig, err := base64.StdEncoding.DecodeString(q.Get("fm"))
if err != nil {
return "", fmt.Errorf("decoding fm error: %w", err)
}
fm_orig_str := string(fm_orig)
log.WithField("field", "decoded fm").Debug(fm_orig_str)
fm_orig_str = strings.Replace(fm_orig_str, "$0", l.uid, -1)
fm_orig_str = strings.Replace(fm_orig_str, "$1", streamname, -1)
fm_orig_str = strings.Replace(fm_orig_str, "$2", ss, -1)
fm_orig_str = strings.Replace(fm_orig_str, "$3", q.Get("wsTime"), -1)
wss := md5.Sum([]byte(fm_orig_str))
q.Set("wsSecret", hex.EncodeToString(wss[:]))
q.Del("fm")
if q.Has("txyp") {
q.Del("txyp")
}
return q.Encode(), nil
}