/
twitch.go
126 lines (119 loc) · 3.52 KB
/
twitch.go
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package Twitch
import (
"errors"
"fmt"
"github.com/nv4d1k/live-stream-forwarder/app/engine/forwarder/httpweb"
"io"
"log"
"net/http"
"net/url"
"regexp"
"strings"
"github.com/tidwall/gjson"
)
type Link struct {
rid string
cid string
sig string
token string
client *http.Client
}
func NewTwitchLink(rid string, proxy *url.URL) (*Link, error) {
var (
err error
)
tw := new(Link)
tw.rid = rid
if proxy != nil {
tw.client = &http.Client{Transport: httpweb.NewAddHeaderTransport(&http.Transport{Proxy: http.ProxyURL(proxy)}, false)}
} else {
tw.client = &http.Client{Transport: httpweb.NewAddHeaderTransport(nil, false)}
}
err = tw.getClientID()
if err != nil {
return nil, err
}
err = tw.getSigToken()
if err != nil {
return nil, err
}
return tw, nil
}
func (l *Link) GetLink() (*url.URL, error) {
params := url.Values{}
params.Add("allow_source", "true")
params.Add("fast_bread", "true")
params.Add("player_backend", "mediaplayer")
params.Add("playlist_include_framerate", "true")
params.Add("reassignments_supported", "true")
params.Add("sig", l.sig)
params.Add("supported_codecs", "vp09,avc1")
params.Add("token", l.token)
params.Add("cdm", "wv")
params.Add("player_version", "1.18.0")
stream_info := map[string]string{}
stream_info["m3u8"] = fmt.Sprintf("https://usher.ttvnw.net/api/channel/hls/%s.m3u8?%s", l.rid, params.Encode())
return url.Parse(stream_info["m3u8"])
}
func (l *Link) getClientID() error {
resp, err := l.client.Get(fmt.Sprintf("https://www.twitch.tv/%s", l.rid))
if err != nil {
return 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 err
}
re := regexp.MustCompile(`clientId="(.*?)"`)
cid := re.FindStringSubmatch(string(body))
if len(cid) < 2 {
return errors.New("client id not found")
}
l.cid = cid[1]
return nil
}
func (l *Link) getSigToken() error {
data := fmt.Sprintf(`{
"operationName": "PlaybackAccessToken_Template",
"query": "query PlaybackAccessToken_Template($login: String!, $isLive: Boolean!, $vodID: ID!, $isVod: Boolean!, $playerType: String!) { streamPlaybackAccessToken(channelName: $login, params: {platform: \"web\", playerBackend: \"mediaplayer\", playerType: $playerType}) @include(if: $isLive) { value signature __typename } videoPlaybackAccessToken(id: $vodID, params: {platform: \"web\", playerBackend: \"mediaplayer\", playerType: $playerType}) @include(if: $isVod) { value signature __typename }}",
"variables": {
"isLive": true,
"login": "%s",
"isVod": false,
"vodID": "",
"playerType": "site"
}
}`, l.rid)
req, err := http.NewRequest("POST", "https://gql.twitch.tv/gql", strings.NewReader(data))
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Referer", fmt.Sprintf("https://www.twitch.tv/%s", l.rid))
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36")
req.Header.Add("Client-ID", l.cid)
resp, err := l.client.Do(req)
if err != nil {
return 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 err
}
result := gjson.ParseBytes(body)
l.sig = result.Get("data.streamPlaybackAccessToken.signature").String()
l.token = result.Get("data.streamPlaybackAccessToken.value").String()
return nil
}