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feat(trojan): ip restriction for trojan

This commit is contained in:
Devman 2023-06-30 21:28:36 +00:00
parent 97fa8827e2
commit 343adca4c0
1 changed files with 21 additions and 1 deletions
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22
proxy/trojan/server.go
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@ -131,7 +131,7 @@ func (s *Server) Network() []net.Network {
}
// Process implements proxy.Inbound.Process().
func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Connection, dispatcher routing.Dispatcher) error {
func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Connection, dispatcher routing.Dispatcher, usrIpRstrct *map[session.ID]*stat.UserIpRestriction, connIp *stat.UserIpRestriction) error {
sid := session.ExportIDToError(ctx)
iConn := conn
@ -221,6 +221,26 @@ func (s *Server) Process(ctx context.Context, network net.Network, conn stat.Con
inbound.User = user
sessionPolicy = s.policyManager.ForLevel(user.Level)
if (user.IpLimit > 0) {
addr := conn.RemoteAddr().(*net.TCPAddr)
uniqueIps := make(map[string]bool)
// Iterate through the connections and find unique used IP addresses withing last 30 seconds.
for _, conn := range *usrIpRstrct {
if conn.User == user.Email && !conn.IpAddress.Equal(addr.IP) && ((time.Now().Unix() - conn.Time) < 30) {
uniqueIps[conn.IpAddress.String()] = true
}
}
if (len(uniqueIps) >= int(user.IpLimit)) {
return newError("User ", user, " has exceeded their allowed IPs.").AtWarning()
}
connIp.IpAddress = addr.IP
connIp.User = user.Email
connIp.Time = time.Now().Unix()
}
if destination.Network == net.Network_UDP { // handle udp request
return s.handleUDPPayload(ctx, &PacketReader{Reader: clientReader}, &PacketWriter{Writer: conn}, dispatcher)
}