vncproxy/proxy/message-listeners.go

78 lines
2.5 KiB
Go

package proxy
import (
"vncproxy/client"
"vncproxy/common"
"vncproxy/logger"
"vncproxy/server"
)
type ClientUpdater struct {
conn *client.ClientConn
}
// Consume recieves vnc-server-bound messages (Client messages) and updates the server part of the proxy
func (cc *ClientUpdater) Consume(seg *common.RfbSegment) error {
logger.Tracef("ClientUpdater.Consume (vnc-server-bound): got segment type=%s bytes: %v", seg.SegmentType, seg.Bytes)
switch seg.SegmentType {
case common.SegmentFullyParsedClientMessage:
clientMsg := seg.Message.(common.ClientMessage)
logger.Debugf("ClientUpdater.Consume:(vnc-server-bound) got ClientMessage type=%s", clientMsg.Type())
switch clientMsg.Type() {
case common.SetPixelFormatMsgType:
// update pixel format
logger.Debugf("ClientUpdater.Consume: updating pixel format")
pixFmtMsg := clientMsg.(*server.MsgSetPixelFormat)
cc.conn.PixelFormat = pixFmtMsg.PF
}
err := clientMsg.Write(cc.conn)
if err != nil {
logger.Errorf("ClientUpdater.Consume (vnc-server-bound, SegmentFullyParsedClientMessage): problem writing to port: %s", err)
}
return err
}
return nil
}
type ServerUpdater struct {
conn *server.ServerConn
}
func (p *ServerUpdater) Consume(seg *common.RfbSegment) error {
logger.Debugf("WriteTo.Consume (ServerUpdater): got segment type=%s, object type:%d", seg.SegmentType, seg.UpcomingObjectType)
switch seg.SegmentType {
case common.SegmentMessageStart:
case common.SegmentRectSeparator:
case common.SegmentServerInitMessage:
serverInitMessage := seg.Message.(*common.ServerInit)
p.conn.SetHeight(serverInitMessage.FBHeight)
p.conn.SetWidth(serverInitMessage.FBWidth)
p.conn.SetDesktopName(string(serverInitMessage.NameText))
p.conn.SetPixelFormat(&serverInitMessage.PixelFormat)
case common.SegmentBytes:
logger.Debugf("WriteTo.Consume (ServerUpdater SegmentBytes): got bytes len=%d", len(seg.Bytes))
_, err := p.conn.Write(seg.Bytes)
if err != nil {
logger.Errorf("WriteTo.Consume (ServerUpdater SegmentBytes): problem writing to port: %s", err)
}
return err
case common.SegmentFullyParsedClientMessage:
clientMsg := seg.Message.(common.ClientMessage)
logger.Debugf("WriteTo.Consume (ServerUpdater): got ClientMessage type=%s", clientMsg.Type())
err := clientMsg.Write(p.conn)
if err != nil {
logger.Errorf("WriteTo.Consume (ServerUpdater SegmentFullyParsedClientMessage): problem writing to port: %s", err)
}
return err
default:
//return errors.New("WriteTo.Consume: undefined RfbSegment type")
}
return nil
}