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Use password to diff viewer from streamer

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This commit is contained in:
Alexandre Iooss 2020-10-04 12:40:56 +02:00
parent 3c16c11f38
commit 2a24598aea
No known key found for this signature in database
GPG Key ID: 6C79278F3FCDCC02
1 changed files with 36 additions and 53 deletions
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89
stream/srt/srt.go
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@ -4,7 +4,6 @@ package srt
import "C"
import (
"fmt"
"log"
"net"
"strconv"
@ -53,8 +52,6 @@ func Serve(cfg *Options, authBackend auth.Backend, forwardingChannel chan Packet
log.Fatal("Unable to listen for SRT clients:", err)
}
// FIXME: Get the stream type
streamStarted := false
// FIXME Better structure
clientDataChannels := make([]chan Packet, cfg.MaxClients)
listeners := 0
@ -67,35 +64,48 @@ func Serve(cfg *Options, authBackend auth.Backend, forwardingChannel chan Packet
continue
}
if !streamStarted {
// The first connection is the streamer
go acceptCallerSocket(s, clientDataChannels, &listeners, authBackend, forwardingChannel)
streamStarted = true
// streamid can be "name:password" for streamer or "name" for viewer
streamID, err := s.GetSockOptString(C.SRTO_STREAMID)
if err != nil {
log.Print("Failed to get socket streamid")
continue
}
split := strings.Split(streamID, ":")
if len(split) > 1 {
// password was provided so it is a streamer
name, password := split[0], split[1]
if authBackend != nil {
// check password
if ok, err := authBackend.Login(name, password); !ok || err != nil {
log.Printf("Failed to authenticate for stream %s", name)
s.Close()
continue
}
}
go handleStreamer(s, name, clientDataChannels, &listeners, forwardingChannel)
} else {
// All following connections are viewers
// password was not provided so it is a viewer
name := split[0]
dataChannel := make(chan Packet, 2048)
clientDataChannels[listeners] = dataChannel
listeners++
go acceptListeningSocket(s, dataChannel)
go handleViewer(s, name, dataChannel)
}
}
}
func acceptCallerSocket(s *srtgo.SrtSocket, clientDataChannels []chan Packet, listeners *int, authBackend auth.Backend, forwardingChannel chan Packet) {
streamName, err := authenticateSocket(s, authBackend)
if err != nil {
log.Println("Authentication failure:", err)
s.Close()
return
}
log.Printf("Starting stream %s...", streamName)
func handleStreamer(s *srtgo.SrtSocket, name string, clientDataChannels []chan Packet, listeners *int, forwardingChannel chan Packet) {
log.Printf("New SRT streamer for stream %s", name)
// Create a new buffer
buff := make([]byte, 2048)
// Setup stream forwarding
forwardingChannel <- Packet{StreamName: streamName, PacketType: "register", Data: nil}
forwardingChannel <- Packet{StreamName: name, PacketType: "register", Data: nil}
// Read RTP packets forever and send them to the WebRTC Client
for {
@ -116,9 +126,9 @@ func acceptCallerSocket(s *srtgo.SrtSocket, clientDataChannels []chan Packet, li
// Copy data in another buffer to ensure that the data would not be overwritten
data := make([]byte, n)
copy(data, buff[:n])
forwardingChannel <- Packet{StreamName: streamName, PacketType: "sendData", Data: data}
forwardingChannel <- Packet{StreamName: name, PacketType: "sendData", Data: data}
for i := 0; i < *listeners; i++ {
clientDataChannels[i] <- Packet{StreamName: streamName, PacketType: "sendData", Data: data}
clientDataChannels[i] <- Packet{StreamName: name, PacketType: "sendData", Data: data}
}
// TODO: Send to WebRTC
@ -126,48 +136,21 @@ func acceptCallerSocket(s *srtgo.SrtSocket, clientDataChannels []chan Packet, li
//err := videoTrack.WriteSample(media.Sample{Data: data, Samples: uint32(sampleCount)})
}
forwardingChannel <- Packet{StreamName: streamName, PacketType: "close", Data: nil}
forwardingChannel <- Packet{StreamName: name, PacketType: "close", Data: nil}
}
func acceptListeningSocket(s *srtgo.SrtSocket, dataChannel chan Packet) {
streamName, err := s.GetSockOptString(C.SRTO_STREAMID)
if err != nil {
panic(err)
}
log.Printf("New listener for stream %s", streamName)
func handleViewer(s *srtgo.SrtSocket, name string, dataChannel chan Packet) {
log.Printf("New SRT viewer for stream %s", name)
// Receive packets from channel and send them
for {
packet := <-dataChannel
if packet.PacketType == "sendData" {
_, err := s.Write(packet.Data, 10000)
if err != nil {
s.Close()
break
return
}
}
}
}
func authenticateSocket(s *srtgo.SrtSocket, authBackend auth.Backend) (string, error) {
streamID, err := s.GetSockOptString(C.SRTO_STREAMID)
if err != nil {
return "", fmt.Errorf("error while fetching stream key: %s", err)
}
log.Println(s.GetSockOptString(C.SRTO_PASSPHRASE))
if !strings.Contains(streamID, ":") {
return streamID, fmt.Errorf("warning: stream id must be at the format streamID:password. Input: %s", streamID)
}
splittedStreamID := strings.SplitN(streamID, ":", 2)
streamName, password := splittedStreamID[0], splittedStreamID[1]
if authBackend == nil {
// Bypass authentification if none provided
return streamName, nil
}
loggedIn, err := authBackend.Login(streamName, password)
if !loggedIn {
return streamID, fmt.Errorf("invalid credentials for stream %s", streamName)
}
return streamName, nil
}