3x-ui

util/sys/sys_linux.go

@@ -0,0 +1,70 @@
+// +build linux
+
+package sys
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+func getLinesNum(filename string) (int, error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		return 0, err
+	}
+	defer file.Close()
+
+	sum := 0
+	buf := make([]byte, 8192)
+	for {
+		n, err := file.Read(buf)
+
+		var buffPosition int
+		for {
+			i := bytes.IndexByte(buf[buffPosition:], '\n')
+			if i < 0 || n == buffPosition {
+				break
+			}
+			buffPosition += i + 1
+			sum++
+		}
+
+		if err == io.EOF {
+			return sum, nil
+		} else if err != nil {
+			return sum, err
+		}
+	}
+}
+
+func GetTCPCount() (int, error) {
+	root := HostProc()
+
+	tcp4, err := getLinesNum(fmt.Sprintf("%v/net/tcp", root))
+	if err != nil {
+		return tcp4, err
+	}
+	tcp6, err := getLinesNum(fmt.Sprintf("%v/net/tcp6", root))
+	if err != nil {
+		return tcp4 + tcp6, nil
+	}
+
+	return tcp4 + tcp6, nil
+}
+
+func GetUDPCount() (int, error) {
+	root := HostProc()
+
+	udp4, err := getLinesNum(fmt.Sprintf("%v/net/udp", root))
+	if err != nil {
+		return udp4, err
+	}
+	udp6, err := getLinesNum(fmt.Sprintf("%v/net/udp6", root))
+	if err != nil {
+		return udp4 + udp6, nil
+	}
+
+	return udp4 + udp6, nil
+}