/
handler.go
114 lines (94 loc) · 3.11 KB
/
handler.go
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package dispather
import (
"fmt"
"net"
"github.com/Dliv3/Venom/crypto"
"github.com/Dliv3/Venom/global"
"github.com/Dliv3/Venom/netio"
"github.com/Dliv3/Venom/node"
"github.com/Dliv3/Venom/protocol"
"github.com/Dliv3/Venom/utils"
)
// AdminClient Admin节点作为Client
func AdminClient(conn net.Conn) {
result, peerNode := node.ClentInitConnection(conn)
if result {
go node.CurrentNode.CommandHandler(peerNode)
}
}
// AdminServer Admin节点作为Server
func AdminServer(conn net.Conn) {
fmt.Println("\n[+]Remote connection: ", conn.RemoteAddr())
result, peerNode := node.ServerInitConnection(conn)
if result {
fmt.Print("[+]A new node connect to admin node success")
go node.CurrentNode.CommandHandler(peerNode)
}
}
var LForwardTarget map[string]bool
func InitAdminHandler() {
LForwardTarget = make(map[string]bool)
go handleLForward()
}
func handleLForward() {
for {
var packetHeaderRet protocol.PacketHeader
var lforwardPacketRet protocol.NetLForwardPacketRet
node.CurrentNode.CommandBuffers[protocol.LFORWARD].ReadPacket(&packetHeaderRet, &lforwardPacketRet)
if lforwardPacketRet.Success == 0 {
fmt.Println("lforward error on agent.")
continue
}
peerNode := node.Nodes[utils.Array32ToUUID(packetHeaderRet.SrcHashID)]
sessionID := lforwardPacketRet.SessionID
// 初始化对应SessionID的Buffer
peerNode.DataBuffers[protocol.LFORWARDDATA].NewDataBuffer(sessionID)
lhost := utils.Uint32ToIp(lforwardPacketRet.LHost).String()
sport := lforwardPacketRet.SrcPort
if _, ok := LForwardTarget[crypto.Sha256(fmt.Sprintf("%s:%d", lhost, sport))]; !ok {
continue
}
err := netio.InitTCP(
"connect",
fmt.Sprintf("%s:%d", lhost, sport),
peerNode.HashID,
func(conn net.Conn, peerNodeID string, done chan bool, args ...interface{}) {
defer func() {
// fmt.Println(" ################ admin close ################")
closeData := protocol.NetDataPacket{
SessionID: sessionID,
Close: 1,
}
packetHeader := protocol.PacketHeader{
Separator: global.PROTOCOL_SEPARATOR,
CmdType: protocol.LFORWARDDATA,
SrcHashID: utils.UUIDToArray32(node.CurrentNode.HashID),
DstHashID: utils.UUIDToArray32(peerNode.HashID),
}
peerNode.WritePacket(packetHeader, closeData)
// peerNode.DataBuffers[protocol.LFORWARDDATA].RealseDataBuffer(sessionID)
// runtime.GC()
}()
c := make(chan bool, 2)
go node.CopyNet2Node(conn, peerNode, sessionID, protocol.LFORWARDDATA, c)
go node.CopyNode2Net(peerNode, conn, sessionID, protocol.LFORWARDDATA, c)
<-c
})
if err != nil {
// fmt.Println("################ admin close ################")
closeData := protocol.NetDataPacket{
SessionID: sessionID,
Close: 1,
}
packetHeader := protocol.PacketHeader{
Separator: global.PROTOCOL_SEPARATOR,
CmdType: protocol.LFORWARDDATA,
SrcHashID: utils.UUIDToArray32(node.CurrentNode.HashID),
DstHashID: utils.UUIDToArray32(peerNode.HashID),
}
peerNode.WritePacket(packetHeader, closeData)
// peerNode.DataBuffers[protocol.LFORWARDDATA].RealseDataBuffer(sessionID)
// runtime.GC()
}
}
}