sing-box/experimental/libbox/command_connections.go
2024-12-03 17:36:55 +08:00

270 lines
6.6 KiB
Go

package libbox
import (
"bufio"
"net"
"slices"
"strings"
"time"
"github.com/sagernet/sing-box/experimental/clashapi"
"github.com/sagernet/sing-box/experimental/clashapi/trafficontrol"
"github.com/sagernet/sing/common/binary"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
"github.com/sagernet/sing/common/varbin"
"github.com/gofrs/uuid/v5"
)
func (c *CommandClient) handleConnectionsConn(conn net.Conn) {
defer conn.Close()
reader := bufio.NewReader(conn)
var (
rawConnections []Connection
connections Connections
)
for {
rawConnections = nil
err := varbin.Read(reader, binary.BigEndian, &rawConnections)
if err != nil {
c.handler.Disconnected(err.Error())
return
}
connections.input = rawConnections
c.handler.WriteConnections(&connections)
}
}
func (s *CommandServer) handleConnectionsConn(conn net.Conn) error {
var interval int64
err := binary.Read(conn, binary.BigEndian, &interval)
if err != nil {
return E.Cause(err, "read interval")
}
ticker := time.NewTicker(time.Duration(interval))
defer ticker.Stop()
ctx := connKeepAlive(conn)
var trafficManager *trafficontrol.Manager
for {
service := s.service
if service != nil {
trafficManager = service.clashServer.(*clashapi.Server).TrafficManager()
break
}
select {
case <-ctx.Done():
return ctx.Err()
case <-ticker.C:
}
}
var (
connections = make(map[uuid.UUID]*Connection)
outConnections []Connection
)
writer := bufio.NewWriter(conn)
for {
outConnections = outConnections[:0]
for _, connection := range trafficManager.Connections() {
outConnections = append(outConnections, newConnection(connections, connection, false))
}
for _, connection := range trafficManager.ClosedConnections() {
outConnections = append(outConnections, newConnection(connections, connection, true))
}
err = varbin.Write(writer, binary.BigEndian, outConnections)
if err != nil {
return err
}
err = writer.Flush()
if err != nil {
return err
}
select {
case <-ctx.Done():
return ctx.Err()
case <-ticker.C:
}
}
}
const (
ConnectionStateAll = iota
ConnectionStateActive
ConnectionStateClosed
)
type Connections struct {
input []Connection
filtered []Connection
}
func (c *Connections) FilterState(state int32) {
c.filtered = c.filtered[:0]
switch state {
case ConnectionStateAll:
c.filtered = append(c.filtered, c.input...)
case ConnectionStateActive:
for _, connection := range c.input {
if connection.ClosedAt == 0 {
c.filtered = append(c.filtered, connection)
}
}
case ConnectionStateClosed:
for _, connection := range c.input {
if connection.ClosedAt != 0 {
c.filtered = append(c.filtered, connection)
}
}
}
}
func (c *Connections) SortByDate() {
slices.SortStableFunc(c.filtered, func(x, y Connection) int {
if x.CreatedAt < y.CreatedAt {
return 1
} else if x.CreatedAt > y.CreatedAt {
return -1
} else {
return strings.Compare(y.ID, x.ID)
}
})
}
func (c *Connections) SortByTraffic() {
slices.SortStableFunc(c.filtered, func(x, y Connection) int {
xTraffic := x.Uplink + x.Downlink
yTraffic := y.Uplink + y.Downlink
if xTraffic < yTraffic {
return 1
} else if xTraffic > yTraffic {
return -1
} else {
return strings.Compare(y.ID, x.ID)
}
})
}
func (c *Connections) SortByTrafficTotal() {
slices.SortStableFunc(c.filtered, func(x, y Connection) int {
xTraffic := x.UplinkTotal + x.DownlinkTotal
yTraffic := y.UplinkTotal + y.DownlinkTotal
if xTraffic < yTraffic {
return 1
} else if xTraffic > yTraffic {
return -1
} else {
return strings.Compare(y.ID, x.ID)
}
})
}
func (c *Connections) Iterator() ConnectionIterator {
return newPtrIterator(c.filtered)
}
type Connection struct {
ID string
Inbound string
InboundType string
IPVersion int32
Network string
Source string
Destination string
Domain string
Protocol string
User string
FromOutbound string
CreatedAt int64
ClosedAt int64
Uplink int64
Downlink int64
UplinkTotal int64
DownlinkTotal int64
Rule string
Outbound string
OutboundType string
ChainList []string
}
func (c *Connection) Chain() StringIterator {
return newIterator(c.ChainList)
}
func (c *Connection) DisplayDestination() string {
destination := M.ParseSocksaddr(c.Destination)
if destination.IsIP() && c.Domain != "" {
destination = M.Socksaddr{
Fqdn: c.Domain,
Port: destination.Port,
}
return destination.String()
}
return c.Destination
}
type ConnectionIterator interface {
Next() *Connection
HasNext() bool
}
func newConnection(connections map[uuid.UUID]*Connection, metadata trafficontrol.TrackerMetadata, isClosed bool) Connection {
if oldConnection, loaded := connections[metadata.ID]; loaded {
if isClosed {
if oldConnection.ClosedAt == 0 {
oldConnection.Uplink = 0
oldConnection.Downlink = 0
oldConnection.ClosedAt = metadata.ClosedAt.UnixMilli()
}
return *oldConnection
}
lastUplink := oldConnection.UplinkTotal
lastDownlink := oldConnection.DownlinkTotal
uplinkTotal := metadata.Upload.Load()
downlinkTotal := metadata.Download.Load()
oldConnection.Uplink = uplinkTotal - lastUplink
oldConnection.Downlink = downlinkTotal - lastDownlink
oldConnection.UplinkTotal = uplinkTotal
oldConnection.DownlinkTotal = downlinkTotal
return *oldConnection
}
var rule string
if metadata.Rule != nil {
rule = metadata.Rule.String()
}
uplinkTotal := metadata.Upload.Load()
downlinkTotal := metadata.Download.Load()
uplink := uplinkTotal
downlink := downlinkTotal
var closedAt int64
if !metadata.ClosedAt.IsZero() {
closedAt = metadata.ClosedAt.UnixMilli()
uplink = 0
downlink = 0
}
connection := Connection{
ID: metadata.ID.String(),
Inbound: metadata.Metadata.Inbound,
InboundType: metadata.Metadata.InboundType,
IPVersion: int32(metadata.Metadata.IPVersion),
Network: metadata.Metadata.Network,
Source: metadata.Metadata.Source.String(),
Destination: metadata.Metadata.Destination.String(),
Domain: metadata.Metadata.Domain,
Protocol: metadata.Metadata.Protocol,
User: metadata.Metadata.User,
FromOutbound: metadata.Metadata.Outbound,
CreatedAt: metadata.CreatedAt.UnixMilli(),
ClosedAt: closedAt,
Uplink: uplink,
Downlink: downlink,
UplinkTotal: uplinkTotal,
DownlinkTotal: downlinkTotal,
Rule: rule,
Outbound: metadata.Outbound,
OutboundType: metadata.OutboundType,
ChainList: metadata.Chain,
}
connections[metadata.ID] = &connection
return connection
}