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Add CovertWebRTC API

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This commit is contained in:
theodorsm 2024-12-15 23:02:49 +01:00
parent 8caebb484d
commit 5912e2892a
4 changed files with 69 additions and 8 deletions
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41
client/lib/webrtc.go
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@ -11,7 +11,6 @@ import (
"sync"
"time"
"github.com/pion/dtls/v3"
"github.com/pion/ice/v4"
"github.com/pion/transport/v3"
"github.com/pion/transport/v3/stdnet"
@ -53,7 +52,7 @@ type WebRTCPeer struct {
func NewWebRTCPeer(
config *webrtc.Configuration, broker *BrokerChannel,
) (*WebRTCPeer, error) {
return NewWebRTCPeerWithEventsAndProxy(config, broker, nil, nil, false, false)
return NewWebRTCPeerWithEventsAndProxy(config, broker, nil, nil)
}
// Deprecated: Use NewWebRTCPeerWithEventsAndProxy Instead.
@ -61,7 +60,7 @@ func NewWebRTCPeerWithEvents(
config *webrtc.Configuration, broker *BrokerChannel,
eventsLogger event.SnowflakeEventReceiver,
) (*WebRTCPeer, error) {
return NewWebRTCPeerWithEventsAndProxy(config, broker, eventsLogger, nil, false, false)
return NewWebRTCPeerWithEventsAndProxy(config, broker, eventsLogger, nil)
}
// NewWebRTCPeerWithEventsAndProxy constructs a WebRTC PeerConnection to a snowflake proxy.
@ -72,6 +71,42 @@ func NewWebRTCPeerWithEvents(
func NewWebRTCPeerWithEventsAndProxy(
config *webrtc.Configuration, broker *BrokerChannel,
eventsLogger event.SnowflakeEventReceiver, proxy *url.URL,
) (*WebRTCPeer, error) {
if eventsLogger == nil {
eventsLogger = event.NewSnowflakeEventDispatcher()
}
connection := new(WebRTCPeer)
{
var buf [8]byte
if _, err := rand.Read(buf[:]); err != nil {
panic(err)
}
connection.id = "snowflake-" + hex.EncodeToString(buf[:])
}
connection.closed = make(chan struct{})
// Override with something that's not NullLogger to have real logging.
connection.bytesLogger = &bytesNullLogger{}
// Pipes remain the same even when DataChannel gets switched.
connection.recvPipe, connection.writePipe = io.Pipe()
connection.eventsLogger = eventsLogger
connection.proxy = proxy
err := connection.connect(config, broker, false, false)
if err != nil {
connection.Close()
return nil, err
}
return connection, nil
}
// NewCovertWebRTCPeerWithEventsAndProxy constructs a WebRTC PeerConnection to a snowflake proxy using DTLS mimicking or randomization.
func NewCovertWebRTCPeerWithEventsAndProxy(
config *webrtc.Configuration, broker *BrokerChannel,
eventsLogger event.SnowflakeEventReceiver, proxy *url.URL,
dtlsRandomize bool, dtlsMimic bool,
) (*WebRTCPeer, error) {
if eventsLogger == nil {