clash/tunnel/statistic/tracker.go

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package statistic
import (
"net"
"time"
C "github.com/Dreamacro/clash/constant"
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"github.com/gofrs/uuid"
"go.uber.org/atomic"
)
type tracker interface {
ID() string
Close() error
}
type trackerInfo struct {
UUID uuid.UUID `json:"id"`
Metadata *C.Metadata `json:"metadata"`
UploadTotal *atomic.Int64 `json:"upload"`
DownloadTotal *atomic.Int64 `json:"download"`
Start time.Time `json:"start"`
Chain C.Chain `json:"chains"`
Rule string `json:"rule"`
RulePayload string `json:"rulePayload"`
}
type tcpTracker struct {
C.Conn `json:"-"`
*trackerInfo
manager *Manager
}
func (tt *tcpTracker) ID() string {
return tt.UUID.String()
}
func (tt *tcpTracker) Read(b []byte) (int, error) {
n, err := tt.Conn.Read(b)
download := int64(n)
tt.manager.PushDownloaded(download)
tt.DownloadTotal.Add(download)
return n, err
}
func (tt *tcpTracker) Write(b []byte) (int, error) {
n, err := tt.Conn.Write(b)
upload := int64(n)
tt.manager.PushUploaded(upload)
tt.UploadTotal.Add(upload)
return n, err
}
func (tt *tcpTracker) Close() error {
tt.manager.Leave(tt)
return tt.Conn.Close()
}
func NewTCPTracker(conn C.Conn, manager *Manager, metadata *C.Metadata, rule C.Rule) *tcpTracker {
uuid, _ := uuid.NewV4()
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if conn != nil {
if tcpAddr, ok := conn.RemoteAddr().(*net.TCPAddr); ok {
metadata.RemoteDst = tcpAddr.IP.String()
} else {
metadata.RemoteDst = conn.RemoteDestination()
}
}
t := &tcpTracker{
Conn: conn,
manager: manager,
trackerInfo: &trackerInfo{
UUID: uuid,
Start: time.Now(),
Metadata: metadata,
Chain: conn.Chains(),
Rule: "",
UploadTotal: atomic.NewInt64(0),
DownloadTotal: atomic.NewInt64(0),
},
}
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if rule != nil {
t.trackerInfo.Rule = rule.RuleType().String()
t.trackerInfo.RulePayload = rule.Payload()
}
manager.Join(t)
return t
}
type udpTracker struct {
C.PacketConn `json:"-"`
*trackerInfo
manager *Manager
}
func (ut *udpTracker) ID() string {
return ut.UUID.String()
}
func (ut *udpTracker) ReadFrom(b []byte) (int, net.Addr, error) {
n, addr, err := ut.PacketConn.ReadFrom(b)
download := int64(n)
ut.manager.PushDownloaded(download)
ut.DownloadTotal.Add(download)
return n, addr, err
}
func (ut *udpTracker) WriteTo(b []byte, addr net.Addr) (int, error) {
n, err := ut.PacketConn.WriteTo(b, addr)
upload := int64(n)
ut.manager.PushUploaded(upload)
ut.UploadTotal.Add(upload)
return n, err
}
func (ut *udpTracker) Close() error {
ut.manager.Leave(ut)
return ut.PacketConn.Close()
}
func NewUDPTracker(conn C.PacketConn, manager *Manager, metadata *C.Metadata, rule C.Rule) *udpTracker {
uuid, _ := uuid.NewV4()
metadata.RemoteDst = conn.RemoteDestination()
ut := &udpTracker{
PacketConn: conn,
manager: manager,
trackerInfo: &trackerInfo{
UUID: uuid,
Start: time.Now(),
Metadata: metadata,
Chain: conn.Chains(),
Rule: "",
UploadTotal: atomic.NewInt64(0),
DownloadTotal: atomic.NewInt64(0),
},
}
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if rule != nil {
ut.trackerInfo.Rule = rule.RuleType().String()
ut.trackerInfo.RulePayload = rule.Payload()
}
manager.Join(ut)
return ut
}