3x-ui

util/common/err.go

@@ -0,0 +1,29 @@
+package common
+
+import (
+	"errors"
+	"fmt"
+	"x-ui/logger"
+)
+
+var CtxDone = errors.New("context done")
+
+func NewErrorf(format string, a ...interface{}) error {
+	msg := fmt.Sprintf(format, a...)
+	return errors.New(msg)
+}
+
+func NewError(a ...interface{}) error {
+	msg := fmt.Sprintln(a...)
+	return errors.New(msg)
+}
+
+func Recover(msg string) interface{} {
+	panicErr := recover()
+	if panicErr != nil {
+		if msg != "" {
+			logger.Error(msg, "panic:", panicErr)
+		}
+	}
+	return panicErr
+}

util/common/format.go

@@ -0,0 +1,21 @@
+package common
+
+import (
+	"fmt"
+)
+
+func FormatTraffic(trafficBytes int64) (size string) {
+	if trafficBytes < 1024 {
+		return fmt.Sprintf("%.2fB", float64(trafficBytes)/float64(1))
+	} else if trafficBytes < (1024 * 1024) {
+		return fmt.Sprintf("%.2fKB", float64(trafficBytes)/float64(1024))
+	} else if trafficBytes < (1024 * 1024 * 1024) {
+		return fmt.Sprintf("%.2fMB", float64(trafficBytes)/float64(1024*1024))
+	} else if trafficBytes < (1024 * 1024 * 1024 * 1024) {
+		return fmt.Sprintf("%.2fGB", float64(trafficBytes)/float64(1024*1024*1024))
+	} else if trafficBytes < (1024 * 1024 * 1024 * 1024 * 1024) {
+		return fmt.Sprintf("%.2fTB", float64(trafficBytes)/float64(1024*1024*1024*1024))
+	} else {
+		return fmt.Sprintf("%.2fEB", float64(trafficBytes)/float64(1024*1024*1024*1024*1024))
+	}
+}

util/common/multi_error.go

@@ -0,0 +1,30 @@
+package common
+
+import (
+	"strings"
+)
+
+type multiError []error
+
+func (e multiError) Error() string {
+	var r strings.Builder
+	r.WriteString("multierr: ")
+	for _, err := range e {
+		r.WriteString(err.Error())
+		r.WriteString(" | ")
+	}
+	return r.String()
+}
+
+func Combine(maybeError ...error) error {
+	var errs multiError
+	for _, err := range maybeError {
+		if err != nil {
+			errs = append(errs, err)
+		}
+	}
+	if len(errs) == 0 {
+		return nil
+	}
+	return errs
+}

util/common/stringUtil.go

@@ -0,0 +1,9 @@
+package common
+
+import "sort"
+
+func IsSubString(target string, str_array []string) bool {
+	sort.Strings(str_array)
+	index := sort.SearchStrings(str_array, target)
+	return index < len(str_array) && str_array[index] == target
+}

util/context.go

@@ -0,0 +1,12 @@
+package util
+
+import "context"
+
+func IsDone(ctx context.Context) bool {
+	select {
+	case <-ctx.Done():
+		return true
+	default:
+		return false
+	}
+}

util/json_util/json.go

@@ -0,0 +1,24 @@
+package json_util
+
+import (
+	"errors"
+)
+
+type RawMessage []byte
+
+// MarshalJSON 自定义 json.RawMessage 默认行为
+func (m RawMessage) MarshalJSON() ([]byte, error) {
+	if len(m) == 0 {
+		return []byte("null"), nil
+	}
+	return m, nil
+}
+
+// UnmarshalJSON sets *m to a copy of data.
+func (m *RawMessage) UnmarshalJSON(data []byte) error {
+	if m == nil {
+		return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")
+	}
+	*m = append((*m)[0:0], data...)
+	return nil
+}

util/random/random.go

@@ -0,0 +1,43 @@
+package random
+
+import (
+	"math/rand"
+	"time"
+)
+
+var numSeq [10]rune
+var lowerSeq [26]rune
+var upperSeq [26]rune
+var numLowerSeq [36]rune
+var numUpperSeq [36]rune
+var allSeq [62]rune
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+
+	for i := 0; i < 10; i++ {
+		numSeq[i] = rune('0' + i)
+	}
+	for i := 0; i < 26; i++ {
+		lowerSeq[i] = rune('a' + i)
+		upperSeq[i] = rune('A' + i)
+	}
+
+	copy(numLowerSeq[:], numSeq[:])
+	copy(numLowerSeq[len(numSeq):], lowerSeq[:])
+
+	copy(numUpperSeq[:], numSeq[:])
+	copy(numUpperSeq[len(numSeq):], upperSeq[:])
+
+	copy(allSeq[:], numSeq[:])
+	copy(allSeq[len(numSeq):], lowerSeq[:])
+	copy(allSeq[len(numSeq)+len(lowerSeq):], upperSeq[:])
+}
+
+func Seq(n int) string {
+	runes := make([]rune, n)
+	for i := 0; i < n; i++ {
+		runes[i] = allSeq[rand.Intn(len(allSeq))]
+	}
+	return string(runes)
+}

util/reflect_util/reflect.go

@@ -0,0 +1,21 @@
+package reflect_util
+
+import "reflect"
+
+func GetFields(t reflect.Type) []reflect.StructField {
+	num := t.NumField()
+	fields := make([]reflect.StructField, 0, num)
+	for i := 0; i < num; i++ {
+		fields = append(fields, t.Field(i))
+	}
+	return fields
+}
+
+func GetFieldValues(v reflect.Value) []reflect.Value {
+	num := v.NumField()
+	fields := make([]reflect.Value, 0, num)
+	for i := 0; i < num; i++ {
+		fields = append(fields, v.Field(i))
+	}
+	return fields
+}

util/sys/psutil.go

@@ -0,0 +1,8 @@
+package sys
+
+import (
+	_ "unsafe"
+)
+
+//go:linkname HostProc github.com/shirou/gopsutil/internal/common.HostProc
+func HostProc(combineWith ...string) string

util/sys/sys_darwin.go

@@ -0,0 +1,23 @@
+// +build darwin
+
+package sys
+
+import (
+	"github.com/shirou/gopsutil/net"
+)
+
+func GetTCPCount() (int, error) {
+	stats, err := net.Connections("tcp")
+	if err != nil {
+		return 0, err
+	}
+	return len(stats), nil
+}
+
+func GetUDPCount() (int, error) {
+	stats, err := net.Connections("udp")
+	if err != nil {
+		return 0, err
+	}
+	return len(stats), nil
+}

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
+}