fix,upd module

database/sql/ext.go

@@ -0,0 +1,30 @@
+package sql
+
+import "strings"
+
+// key,value To like sql
+func Like(key, val string) string {
+	if val == "" {
+		return ""
+	}
+	key = strings.TrimSpace(key)
+	val = strings.TrimSpace(val)
+	return key + " LIKE '%" + val + "%'"
+}
+
+// map strings to like sqls
+func Likes(in map[string]string) string {
+	var ar []string
+	for key, val := range in {
+		sql := Like(key, val)
+		if sql != "" {
+			ar = append(ar, sql)
+		}
+	}
+
+	if len(ar) == 0 {
+		return ""
+	}
+
+	return strings.Join(ar, " AND ")
+}

database/sql/postgresql.go

@@ -24,14 +24,15 @@ func NewPostgreSql(dsn string, options *types.SqlOptions) (*gorm.DB, error) {
 	}
 
 	//控制台和文件同时输出日志
-	var newLogger = setLogger(vars.ServiceKey, options.LogStdout)
+	//var newLogger = setLogger(vars.ServiceKey, options.LogStdout)
 
 	gormDb, err := gorm.Open(postgres.New(postgres.Config{
 		DSN: dsn,
 		// PreferSimpleProtocol: true,  disables implicit prepared statement usage
 
 	}), &gorm.Config{
-		Logger: newLogger,
+		//Logger:newLogger,
+		DisableForeignKeyConstraintWhenMigrating: true,
 		NamingStrategy: schema.NamingStrategy{
 			SingularTable: true, // 使用单数表名，启用该选项，此时，`User` 的表名应该是 `t_user`
 		}})

encipher/aes.go

@@ -6,7 +6,6 @@ import (
 	"crypto/cipher"
 	"encoding/base64"
 	"encoding/json"
-	"errors"
 	"strings"
 	"time"
 
@@ -22,25 +21,29 @@ var (
 	JwtSecretLen int
 )
 
-func New() {
+func New(token string) {
-	JwtSecret = []byte(env.MeshEnv.JwtSecretKey)
+	JwtSecret = []byte(token)
 	JwtSecretLen = len(env.MeshEnv.JwtSecretKey)
 }
 
-func GenerateTokenAes(id uint, identity, client, role string, extend map[string]string) (string, error) {
+func GenerateTokenAes(id uint, identity, client, role string, owner any, extend map[string]string) (string, error) {
+	if (JwtSecretLen == 16 || JwtSecretLen == 24 || JwtSecretLen == 32) == false {
+		return "", exception.ErrAuthSecret
+	}
 	expireTime := time.Now().Add(vars.JwtExpireDay)
 	claims := types.JwtClaims{
 		ID:        id,
 		Identity:  identity,
-		Extend:    extend,
 		Client:    client,
+		Extend:    extend,
+		Owner:     owner,
 		Role:      role,
 		ExpiresAt: expireTime.Unix(),
 	}
 
 	byte, err := json.Marshal(claims)
 	if err != nil {
-		return "", err
+		return "", exception.ErrJsonEncode
 	}
 
 	token, err := AesEncryptCBC(byte)
@@ -51,12 +54,13 @@ func GenerateTokenAes(id uint, identity, client, role string, extend map[string]
 }
 
 func AesEncryptCBC(plan []byte) (string, error) {
-	if (JwtSecretLen == 16 || JwtSecretLen == 24 || JwtSecretLen == 32) == false {
+
-		return "", errors.New("JwtSecret lenght must 16/24/32.")
-	}
 	// 分组秘钥
 	// NewCipher该函数限制了输入k的长度必须为16, 24或者32
-	block, _ := aes.NewCipher(JwtSecret)
+	block, err := aes.NewCipher(JwtSecret)
+	if err != nil {
+		return "", exception.ErrAuthSecret
+	}
 	// 获取秘钥块的长度
 	blockSize := block.BlockSize()
 	// 补全码
@@ -72,17 +76,17 @@ func AesEncryptCBC(plan []byte) (string, error) {
 
 func AesDecryptCBC(cryted string) (b []byte, err error) {
 	if (JwtSecretLen == 16 || JwtSecretLen == 24 || JwtSecretLen == 32) == false {
-		return b, errors.New("JwtSecret lenght must 16/24/32.")
+		return nil, exception.ErrAuthSecret
 	}
 	// 转成字节数组
 	crytedByte, err := base64.StdEncoding.DecodeString(cryted)
 	if err != nil {
-		return
+		return nil, exception.ErrBase64Decode
 	}
 	// 分组秘钥
 	block, err := aes.NewCipher(JwtSecret)
 	if err != nil {
-		return
+		return nil, exception.ErrAuthSecret
 	}
 	// 获取秘钥块的长度
 	blockSize := block.BlockSize()
@@ -121,6 +125,10 @@ func PKCS7UnPadding(origData []byte, blocksize int) []byte {
 
 	length := len(origData)
 	unpadding := int(origData[length-1])
+
+	if length-unpadding <= 0 {
+		return nil
+	}
 	return origData[:(length - unpadding)]
 }
 

env/env.go

@@ -14,11 +14,32 @@ var MeshEnv *types.MeshEnv = nil
 func NewEnv() *types.MeshEnv {
 	if MeshEnv == nil {
 		MeshEnv = &types.MeshEnv{
-			Workspace:    GetEnvDefault("BlocksMesh_Workspace", "bsm"),
+			Workspace:    GetEnvDefault("BlocksMesh_Workspace", "def"),
-			Prefix:       GetEnvDefault("BlocksMesh_Prefix", utils.GetCurrentPath()),
 			JwtSecretKey: GetEnvDefault("BlocksMesh_JwtSecretKey", "Cblocksmesh2022C"),
 			RuntimeMode:  strings.ToLower(GetEnvDefault("BlocksMesh_RuntimeMode", "dev")),
 		}
+
+		if MeshEnv.RuntimeMode == "dev" {
+			MeshEnv.Prefix = GetEnvDefault("BlocksMesh_Prefix", utils.GetCurrentPath())
+		} else {
+			MeshEnv.Prefix = GetEnvDefault("BlocksMesh_Prefix", "/usr/local/bsm")
+		}
+	}
+	return MeshEnv
+}
+
+// get system base env.
+func NewBaseEnv() *types.MeshEnv {
+	if MeshEnv == nil {
+		MeshEnv = &types.MeshEnv{
+			RuntimeMode: strings.ToLower(GetEnvDefault("BlocksMesh_RuntimeMode", "dev")),
+		}
+
+		if MeshEnv.RuntimeMode == "dev" {
+			MeshEnv.Prefix = GetEnvDefault("BlocksMesh_Prefix", utils.GetCurrentPath())
+		} else {
+			MeshEnv.Prefix = GetEnvDefault("BlocksMesh_Prefix", "/usr/local/bsm")
+		}
 	}
 	return MeshEnv
 }

exception/auth.go

@@ -2,7 +2,8 @@ package exception
 
 // jwt custom error code ,begin:200
 var (
-	ErrAuthPasswd       = Errorf(201, "Password Error")
+	ErrAuthSecret       = Errorf(200, "Auth JwtSecret Error")
+	ErrBase64Decode     = Errorf(201, "Auth Token Base64 Decode Error")
 	ErrAuthNotFound     = Errorf(202, "Auth Token Not Found")
 	ErrAuthParseFail    = Errorf(203, "Auth Parse Fail")
 	ErrAuthId           = Errorf(204, "Auth Id Not Passed")
@@ -10,5 +11,8 @@ var (
 	ErrAuthTokenChanged = Errorf(206, "Auth Token Changed")
 	ErrAuthIdType       = Errorf(207, "Auth Id Type Error")
 	ErrAuthExpire       = Errorf(208, "Auth Token Expire")
-	ErrAuthClient       = Errorf(208, "Auth Token Client Not Passed")
+	ErrAuthClient       = Errorf(209, "Auth Token Client Not Passed")
+	ErrJsonDecode       = Errorf(210, "Auth JSON Decode Error")
+	ErrJsonEncode       = Errorf(211, "Auth JSON Encode Error")
+	ErrAccountNotFound  = Errorf(202, "Account Not Found")
 )

exception/errors.go

@@ -28,8 +28,11 @@ var (
 	ErrUnauthenticated    = Errorf(16, "Unauthenticated")
 	ErrJSONMarshal        = Errorf(17, "Marshal JSON")
 	ErrJSONUnmarshal      = Errorf(18, "Unmarshal JSON")
+	ErrPasswd             = Errorf(19, "Password Error")
 
-	ErrSmsCode = Errorf(20, "SMS Code Invalid")
+	ErrSmsCode          = Errorf(20, "SMS Code Invalid")
+	ErrIdArgument       = Errorf(30, "ID Invalid Argument")
+	ErrIdentityArgument = Errorf(31, "Identity Invalid Argument")
 
 	// coustom error status
 )

go.mod

@@ -1,3 +1,3 @@
 module git.apinb.com/bsm-sdk/engine
 
-go 1.21
+go 1.23.3

service/context.go

@@ -2,12 +2,11 @@ package service
 
 import (
 	"context"
+	"encoding/json"
 	"strings"
 
-	"git.apinb.com/bsm-sdk/engine/encipher"
 	"git.apinb.com/bsm-sdk/engine/exception"
 	"git.apinb.com/bsm-sdk/engine/types"
-	"git.apinb.com/bsm-sdk/engine/utils"
 	"google.golang.org/grpc/metadata"
 )
 
@@ -24,27 +23,23 @@ func ParseMetaCtx(ctx context.Context, opts *ParseOptions) (*types.JwtClaims, er
 		return nil, exception.ErrAuthNotFound
 	}
 
-	var Authorizations []string = md.Get("authorization")
+	var Authorizations []string = md.Get("authorization_claims")
 	if len(Authorizations) == 0 || Authorizations[0] == "" {
 		return nil, exception.ErrAuthNotFound
 	}
 
-	claims, err := encipher.ParseTokenAes(Authorizations[0])
+	var claims types.JwtClaims
+	err := json.Unmarshal([]byte(Authorizations[0]), &claims)
 	if err != nil {
-		return nil, err
+		return nil, exception.ErrAuthParseFail
 	}
 
 	if opts != nil {
 		if !strings.Contains(claims.Role, opts.RoleValue) {
 			return nil, exception.ErrPermissionDenied
 		}
-		if opts.MustPrivateAllow {
-			if utils.IsPublicIP(claims.Client) {
-				return nil, exception.ErrPermissionDenied
-			}
-		}
 	}
 
-	return claims, nil
+	return &claims, nil
 
 }

service/service.go

@@ -34,7 +34,7 @@ func Register(srvKey string, cfg any) {
 	// get config file.
 	cf := fmt.Sprintf("%s_%s.yaml", srvKey, env.MeshEnv.RuntimeMode)
 	cf = filepath.Join(env.MeshEnv.Prefix, "etc", cf)
-
+	print.Info("[Blocks Service] %s Config File: %s", vars.ServiceKey, cf)
 	configure.LoadYamlFile(cf, args, cfg)
 
 	return

types/db.go

@@ -18,48 +18,54 @@ type (
 		Debug     bool
 	}
 
+	// standard ID,Identity definition.
+	Std_IDIdentity struct {
+		ID       uint   `gorm:"primarykey;"  json:"id"`
+		Identity string `gorm:"column:identity;type:varchar(36);uniqueIndex;"  json:"identity"` // 唯一标识，24位NanoID,36位为ULID
+	}
+
 	// standard ID,Created,Updated,Deleted definition.
 	Std_IICUDS struct {
-		ID        uint   `gorm:"primarykey;"`
+		ID        uint           `gorm:"primarykey;"  json:"id"`
-		Identity  string `gorm:"column:identity;type:varchar(36);uniqueIndex;"` // 唯一标识，24位NanoID,36位为UUID
+		Identity  string         `gorm:"column:identity;type:varchar(36);uniqueIndex;"  json:"identity"` // 唯一标识，24位NanoID,36位为ULID
-		CreatedAt time.Time
+		CreatedAt time.Time      `json:"created_at"`
-		UpdatedAt time.Time
+		UpdatedAt time.Time      `json:"updated_at"`
-		DeletedAt gorm.DeletedAt `gorm:"index";`
+		DeletedAt gorm.DeletedAt `gorm:"index;" json:"deleted_at"`
-		Status    int8           `gorm:"default:0;index;"` // 状态：默认为0，-1禁止，1为正常
+		Status    int8           `gorm:"default:0;index;" json:"status"` // 状态：默认为0，-1禁止，1为正常
 	}
 
 	// standard ID,Identity,Created,Updated,Deleted,Status definition.
 	Std_ICUD struct {
-		ID        uint `gorm:"primarykey;"`
+		ID        uint           `gorm:"primarykey;"  json:"id"`
-		CreatedAt time.Time
+		CreatedAt time.Time      `json:"created_at"`
-		UpdatedAt time.Time
+		UpdatedAt time.Time      `json:"updated_at"`
-		DeletedAt gorm.DeletedAt `gorm:"index"`
+		DeletedAt gorm.DeletedAt `gorm:"index;" json:"deleted_at"`
 	}
 
 	// standard ID,Created definition.
 	Std_IdCreated struct {
-		ID        uint `gorm:"primarykey;"`
+		ID        uint      `gorm:"primarykey;"  json:"id"`
-		CreatedAt time.Time
+		CreatedAt time.Time `json:"created_at"`
 	}
 
 	// standard PassportID,PassportIdentity definition.
 	Std_Passport struct {
-		PassportID       uint   `gorm:"column:passport_id;Index;"`
+		PassportID       uint   `gorm:"column:passport_id;Index;" json:"passport_id"`
-		PassportIdentity string `gorm:"column:passport_identity;type:varchar(36);Index;"` // 用户唯一标识，24位NanoID,36位为UUID
+		PassportIdentity string `gorm:"column:passport_identity;type:varchar(36);Index;"  json:"passport_identity"` // 用户唯一标识，24位NanoID,36位为ULID
 	}
 
 	// standard ID definition.
 	Std_ID struct {
-		ID uint `gorm:"primarykey;"`
+		ID uint `gorm:"primarykey;"  json:"id"`
 	}
 
 	// standard Identity definition.
 	Std_Identity struct {
-		Identity string `gorm:"column:identity;type:varchar(36);uniqueIndex;"` // 唯一标识，24位NanoID,36位为UUID
+		Identity string `gorm:"column:identity;type:varchar(36);uniqueIndex;"  json:"identity"` // 唯一标识，24位NanoID,36位为ULID
 	}
 
 	// standard Status definition.
 	Std_Status struct {
-		Status int8 `gorm:"default:0;index;"` // 状态：默认为0，-1禁止，1为正常
+		Status int8 `gorm:"default:0;index;" json:"status"` // 状态：默认为0，-1禁止，1为正常
 	}
 )

types/encipher.go

@@ -10,6 +10,7 @@ type JwtClaims struct {
 	Identity  string            `json:"identity"`
 	Extend    map[string]string `json:"extend"`
 	Client    string            `json:"client"`
+	Owner     any               `json:"owner"`
 	Role      string            `json:"role"`
 	ExpiresAt int64             `json:"exp"`
 }

types/etcd.go

@@ -1,12 +1,12 @@
 package types
 
 type Etcd struct {
-	Endpoints []string `json:"endpoints"`
+	Endpoints []string `json:"Endpoints"`
-	Tls       EtcdTls  `json:",optional"`
+	Tls       EtcdTls  `json:"Tls,optional"`
 }
 
 type EtcdTls struct {
-	Ca      string `json:"ca,optional"`
+	Ca      string `json:"Ca,optional"`
-	Cert    string `json:"cert,optional"`
+	Cert    string `json:"Cert,optional"`
-	CertKey string `json:"cert_key,optional" `
+	CertKey string `json:"CertKey,optional" `
 }

types/mcs.go

@@ -0,0 +1,56 @@
+package types
+
+type Message struct {
+	TimeSequence   int64  //消息创建的时间戳
+	SessionIdent   string // 会话唯一标识
+	SenderId       int64
+	SenderIdentity string
+	TargetId       int64
+	TargetIdentity string
+	GroupId        int64  //群组唯一ID，在群聊消息的时候使用到。不使用时则为空
+	GroupIdentity  string //群组唯一码，在群聊消息的时候使用到。不使用时则为空
+	MsgType        int32  //0异常提示，1单聊，2群聊，3系统
+	BodyType       int32  //正文类型：0文本，1图片，2，视频，3.....
+	Body           string
+	Status         int32 //消息状态:0待续，1存储成功，2送达确认，3已读确认，-1撤回
+}
+
+type ChatMessage struct {
+	TimeSequence   int64  //消息创建的时间戳
+	SessionIdent   string // 会话唯一标识
+	SenderId       int64
+	SenderIdentity string
+	TargetId       int64
+	TargetIdentity string
+	BodyType       int32 //正文类型：0文本，1图片，2，视频，3.....
+	Body           string
+	Status         int32 //消息状态:0待续，1存储成功，2送达确认，3已读确认，-1撤回
+}
+
+type GroupMessage struct {
+	TimeSequence   int64  //消息创建的时间戳
+	GroupId        int64  //群组唯一ID，在群聊消息的时候使用到。不使用时则为空
+	GroupIdentity  string //群组唯一标识，在群聊消息的时候使用到。不使用时则为空
+	SenderId       int64
+	SenderIdentity string
+	BodyType       int32 //正文类型：0文本，1图片，2，视频，3.....
+	Body           string
+	Status         int32 //消息状态:0待续，1存储成功，2送达确认，3已读确认，-1撤回
+}
+
+type SystemMessage struct {
+	TimeSequence   int64 //消息创建的时间戳
+	TargetId       int64
+	TargetIdentity string
+	BodyType       int32 //正文类型：0文本，1图片，2，视频，3.....
+	Body           string
+	Status         int32 //消息状态:0待续，1存储成功，2送达确认，3已读确认，-1撤回
+}
+
+type EventMessage struct {
+	TimeSequence   int64 //消息创建的时间戳
+	TargetId       int64
+	TargetIdentity string
+	EventType      int32 //事件类型：0 正在输入，已送达...
+	Status         int32 //消息状态:0待续，1存储成功，2送达确认，3已读确认，-1撤回
+}

utils/convert.go

@@ -2,21 +2,21 @@ package utils
 
 import (
 	"math"
-	"reflect"
 	"strconv"
 	"strings"
-	"unsafe"
 )
 
 // 字符串转Int
-//    intStr：数字的字符串
+//
+//	intStr：数字的字符串
 func String2Int(intStr string) (intNum int) {
 	intNum, _ = strconv.Atoi(intStr)
 	return
 }
 
 // 字符串转Int64
-//    intStr：数字的字符串
+//
+//	intStr：数字的字符串
 func String2Int64(intStr string) (int64Num int64) {
 	intNum, _ := strconv.Atoi(intStr)
 	int64Num = int64(intNum)
@@ -24,14 +24,16 @@ func String2Int64(intStr string) (int64Num int64) {
 }
 
 // 字符串转Float64
-//    floatStr：小数点数字的字符串
+//
+//	floatStr：小数点数字的字符串
 func String2Float64(floatStr string) (floatNum float64) {
 	floatNum, _ = strconv.ParseFloat(floatStr, 64)
 	return
 }
 
 // 字符串转Float32
-//    floatStr：小数点数字的字符串
+//
+//	floatStr：小数点数字的字符串
 func String2Float32(floatStr string) (floatNum float32) {
 	floatNum64, _ := strconv.ParseFloat(floatStr, 32)
 	floatNum = float32(floatNum64)
@@ -39,14 +41,16 @@ func String2Float32(floatStr string) (floatNum float32) {
 }
 
 // Int转字符串
-//    intNum：数字字符串
+//
+//	intNum：数字字符串
 func Int2String(intNum int) (intStr string) {
 	intStr = strconv.Itoa(intNum)
 	return
 }
 
 // Int64转字符串
-//    intNum：数字字符串
+//
+//	intNum：数字字符串
 func Int642String(intNum int64) (int64Str string) {
 	//10, 代表10进制
 	int64Str = strconv.FormatInt(intNum, 10)
@@ -54,8 +58,9 @@ func Int642String(intNum int64) (int64Str string) {
 }
 
 // Float64转字符串
-//    floatNum：float64数字
+//
-//    prec：精度位数（不传则默认float数字精度）
+//	floatNum：float64数字
+//	prec：精度位数（不传则默认float数字精度）
 func Float64ToString(floatNum float64, prec ...int) (floatStr string) {
 	if len(prec) > 0 {
 		floatStr = strconv.FormatFloat(floatNum, 'f', prec[0], 64)
@@ -66,8 +71,9 @@ func Float64ToString(floatNum float64, prec ...int) (floatStr string) {
 }
 
 // Float32转字符串
-//    floatNum：float32数字
+//
-//    prec：精度位数（不传则默认float数字精度）
+//	floatNum：float32数字
+//	prec：精度位数（不传则默认float数字精度）
 func Float32ToString(floatNum float32, prec ...int) (floatStr string) {
 	if len(prec) > 0 {
 		floatStr = strconv.FormatFloat(float64(floatNum), 'f', prec[0], 32)
@@ -90,15 +96,6 @@ func BinaryToDecimal(bit string) (num int) {
 	return
 }
 
-// BytesToString 0 拷贝转换 slice byte 为 string
-func BytesToString(b []byte) (s string) {
-	_bptr := (*reflect.SliceHeader)(unsafe.Pointer(&b))
-	_sptr := (*reflect.StringHeader)(unsafe.Pointer(&s))
-	_sptr.Data = _bptr.Data
-	_sptr.Len = _bptr.Len
-	return s
-}
-
 // interface to string
 func AnyToString(in any) (s string) {
 	if in == nil {

utils/identity.go

@@ -1,26 +1,10 @@
 package utils
 
 import (
-	"strconv"
+	ulid "github.com/oklog/ulid/v2"
-
-	"github.com/google/uuid"
-	"github.com/jaevor/go-nanoid"
 )
 
-func NanoID() string {
+// remove nanoid,uuid,replace to ulid
-	nanoid, _ := nanoid.CustomASCII("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 21)
+func ULID() string {
-	return nanoid()
+	return ulid.Make().String()
-}
-
-func NanoIDInt() (id int64, err error) {
-	decenaryID, err := nanoid.CustomASCII("0123456789", 20)
-	if err != nil {
-		return
-	}
-	id, err = strconv.ParseInt(decenaryID(), 10, 64)
-	return
-}
-
-func UUID() string {
-	return uuid.NewString()
 }

utils/net.go

@@ -99,7 +99,7 @@ func HttpPost(url string, header map[string]string, data []byte) ([]byte, error)
 	}
 
 	request.Header.Set("Content-Type", "application/json;charset=UTF-8")
-	request.Header.Set("Request-Id", NanoID())
+	request.Header.Set("Request-Id", ULID())
 
 	for key, val := range header {
 		request.Header.Set(key, val)

utils/random.go

@@ -1,42 +1,49 @@
 package utils
 
 import (
-	"math/rand"
+	"math/rand/v2"
-	"time"
 )
 
-//随机生成字符串
+// 随机生成字符串
 func RandomString(l int) string {
 	str := "0123456789AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz"
 	bytes := []byte(str)
 	var result []byte = make([]byte, 0, l)
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	for i := 0; i < l; i++ {
-		result = append(result, bytes[r.Intn(len(bytes))])
+		result = append(result, bytes[rand.IntN(len(bytes))])
 	}
-	return BytesToString(result)
+	return string(result)
 }
 
-//随机生成纯字符串
+// 随机生成纯字符串
 func RandomPureString(l int) string {
 	str := "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz"
 	bytes := []byte(str)
 	var result []byte = make([]byte, 0, l)
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	for i := 0; i < l; i++ {
-		result = append(result, bytes[r.Intn(len(bytes))])
+		result = append(result, bytes[rand.IntN(len(bytes))])
 	}
-	return BytesToString(result)
+	return string(result)
 }
 
-//随机生成数字字符串
+// 随机生成纯大写字符串
+func RandomPureUpString(l int) string {
+	str := "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+	bytes := []byte(str)
+	var result []byte = make([]byte, 0, l)
+	for i := 0; i < l; i++ {
+		result = append(result, bytes[rand.IntN(len(bytes))])
+	}
+	return string(result)
+}
+
+// 随机生成数字字符串
 func RandomNumber(l int) string {
 	str := "0123456789"
 	bytes := []byte(str)
 	var result []byte
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	for i := 0; i < l; i++ {
-		result = append(result, bytes[r.Intn(len(bytes))])
+		result = append(result, bytes[rand.IntN(len(bytes))])
 	}
-	return BytesToString(result)
+	return string(result)
 }

vars/status.go

@@ -0,0 +1,8 @@
+package vars
+
+const (
+	// NormalStatus .
+	NormalStatus = 1
+	// DisabledStatus .
+	DisabledStatus = -1
+)