element-call/backend/auth/server.go

99 lines
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package main
import (
"encoding/json"
"log"
"net/http"
"os"
"time"
"github.com/livekit/protocol/auth"
)
type Handler struct {
key, secret string
}
func (h *Handler) handle(w http.ResponseWriter, r *http.Request) {
log.Printf("Request from %s", r.RemoteAddr)
// Set the CORS headers
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
w.Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
// Handle preflight request (CORS)
if r.Method == "OPTIONS" {
w.WriteHeader(http.StatusOK)
return
}
roomName := r.URL.Query().Get("roomName")
name := r.URL.Query().Get("name")
identity := r.URL.Query().Get("identity")
log.Printf("roomName: %s, name: %s, identity: %s", roomName, name, identity)
if roomName == "" || name == "" || identity == "" {
w.WriteHeader(http.StatusBadRequest)
return
}
token, err := getJoinToken(h.key, h.secret, roomName, identity, name)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
res := Response{token}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(res)
}
func main() {
key := os.Getenv("LIVEKIT_KEY")
secret := os.Getenv("LIVEKIT_SECRET")
// Check if the key and secret are empty.
if key == "" || secret == "" {
log.Fatal("LIVEKIT_KEY and LIVEKIT_SECRET environment variables must be set")
}
log.Printf("LIVEKIT_KEY: %s and LIVEKIT_SECRET %s", key, secret)
handler := &Handler{
key: key,
secret: secret,
}
http.HandleFunc("/token", handler.handle)
log.Fatal(http.ListenAndServe(":8080", nil))
}
type Response struct {
Token string `json:"accessToken"`
}
func getJoinToken(apiKey, apiSecret, room, identity, name string) (string, error) {
at := auth.NewAccessToken(apiKey, apiSecret)
canPublish := true
canSubscribe := true
grant := &auth.VideoGrant{
RoomJoin: true,
RoomCreate: true,
CanPublish: &canPublish,
CanSubscribe: &canSubscribe,
Room: room,
}
at.AddGrant(grant).
SetIdentity(identity).
SetValidFor(time.Hour).
SetName(name)
return at.ToJWT()
}