sutil

package module
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 Go to latest Published: Mar 21, 2020 License: MIT Imports: 22 Imported by: 3

README

siot-util

An Common Tools Develop By Golang

Documentation

Overview

Package crc implements generic CRC calculations up to 64 bits wide. It aims to be fairly complete, allowing users to match pretty much any CRC algorithm used in the wild by choosing appropriate Parameters. And it's also fairly fast for everyday use.

This package has been largely inspired by Ross Williams' 1993 paper "A Painless Guide to CRC Error Detection Algorithms". A good list of parameter sets for various CRC algorithms can be found at http://reveng.sourceforge.net/crc-catalogue/.

Index

Constants

View Source 
const (
	TypeErrSystem   = "服务器错误"
	TypeErrDatabase = "数据库错误"
	TypeErrMq       = "消息服务错误"
	TypeErrCache    = "缓存服务错误"
	TypeErrUser     = "用户操作错误"
)

define Col operations

View Source 
const (
	StatusSuccess         = 200
	StatusTypeErrSystem   = 500
	StatusTypeErrDatabase = 600
	StatusTypeErrMq       = 700
	StatusTypeErrCache    = 800
	StatusTypeErrUser     = 400
)

Variables

View Source 
var (
	// X-25 CRC parameters, also known as CRC-16/IBM-SDLC, CRC-16/ISO-HDLC, CRC-B
	X25 = &Parameters{Width: 16, Polynomial: 0x1021, Init: 0xFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0xFFFF}
	// CCITT CRC parameters
	CCITT = &Parameters{Width: 16, Polynomial: 0x1021, Init: 0xFFFF, ReflectIn: false, ReflectOut: false, FinalXor: 0x0}
	// CRC16 CRC parameters, also known as ARC
	CRC16 = &Parameters{Width: 16, Polynomial: 0x8005, Init: 0x0000, ReflectIn: true, ReflectOut: true, FinalXor: 0x0}
	// CRC16 MODBUS CRC parameters, also known as ARC
	CRC16MODBUS = &Parameters{Width: 16, Polynomial: 0x8005, Init: 0xFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0x0}
	// XMODEM is a set of CRC parameters commonly referred as "XMODEM"
	XMODEM = &Parameters{Width: 16, Polynomial: 0x1021, Init: 0x0000, ReflectIn: false, ReflectOut: false, FinalXor: 0x0}
	// XMODEM2 is another set of CRC parameters commonly referred as "XMODEM"
	XMODEM2 = &Parameters{Width: 16, Polynomial: 0x8408, Init: 0x0000, ReflectIn: true, ReflectOut: true, FinalXor: 0x0}

	// CRC32 is by far the the most commonly used CRC-32 polynom and set of parameters
	CRC32 = &Parameters{Width: 32, Polynomial: 0x04C11DB7, Init: 0xFFFFFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0xFFFFFFFF}
	// IEEE is an alias to CRC32
	IEEE = CRC32
	// Castagnoli polynomial. used in iSCSI. And also provided by hash/crc32 package.
	Castagnoli = &Parameters{Width: 32, Polynomial: 0x1EDC6F41, Init: 0xFFFFFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0xFFFFFFFF}
	// CRC32C is an alias to Castagnoli
	CRC32C = Castagnoli
	// Koopman polynomial
	Koopman = &Parameters{Width: 32, Polynomial: 0x741B8CD7, Init: 0xFFFFFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0xFFFFFFFF}

	// CRC64ISO is set of parameters commonly known as CRC64-ISO
	CRC64ISO = &Parameters{Width: 64, Polynomial: 0x000000000000001B, Init: 0xFFFFFFFFFFFFFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0xFFFFFFFFFFFFFFFF}
	// CRC64ECMA is set of parameters commonly known as CRC64-ECMA
	CRC64ECMA = &Parameters{Width: 64, Polynomial: 0x42F0E1EBA9EA3693, Init: 0xFFFFFFFFFFFFFFFF, ReflectIn: true, ReflectOut: true, FinalXor: 0xFFFFFFFFFFFFFFFF}
)
View Source 
var (
	ErrDb                  = &ControllerError{600, 10001, "数据库错误", "数据库操作错误", ""}
	ErrDupRecord           = &ControllerError{600, 10002, "数据库错误", "数据库记录重复", ""}
	ErrNoRecord            = &ControllerError{600, 10003, "数据库错误", "数据库记录不存在", ""}
	ErrUserPass            = &ControllerError{600, 10004, "数据库错误", "用户名或密码不正确", ""}
	ErrDbInsert            = &ControllerError{600, 10005, "数据库错误", "数据添加错误", ""}
	ErrDbUpdate            = &ControllerError{600, 10006, "数据库错误", "数据更新错误", ""}
	ErrDbDelete            = &ControllerError{600, 10007, "数据库错误", "数据删除错误", ""}
	ErrChangeAccountStatus = &ControllerError{600, 10008, "数据库错误", "更新账户状态错误", ""}
)
View Source 
var (
	ErrUserExist   = &ControllerError{400, 10001, "用户操作错误", "用户账户已存在", ""}
	ErrUserInput   = &ControllerError{400, 10002, "用户操作错误", "用户输入参数错误", ""}
	ErrUserModify  = &ControllerError{400, 10003, "用户操作错误", "修改用户错误", ""}
	ErrUserDelete  = &ControllerError{400, 10004, "用户操作错误", "删除用户错误", ""}
	ErrNoUser      = &ControllerError{400, 10005, "用户操作错误", "用户账户不存在", ""}
	ErrUserGet     = &ControllerError{400, 10006, "用户操作错误", "获取所有用户错误", ""}
	ErrUserGetLogs = &ControllerError{400, 10007, "用户操作错误", "获取用户登录日志错误", ""}

	ErrOpenFile   = &ControllerError{500, 10009, "服务器错误", "打开文件出错", ""}
	ErrWriteFile  = &ControllerError{500, 10010, "服务器错误", "写文件出错", ""}
	ErrSystem     = &ControllerError{500, 10011, "服务器错误", "操作系统错误", ""}
	ErrExpired    = &ControllerError{400, 10012, "登录已过期", "验证token过期", ""}
	ErrPermission = &ControllerError{400, 10013, "没有权限", "没有操作权限", ""}
)
View Source 
var (
	Err404          = &ControllerError{StatusTypeErrUser, 404, "page not found", "page not found", ""}
	ErrInputData    = &ControllerError{400, 10001, "数据输入错误", "客户端参数错误", ""}
	ErrVersionCheck = &ControllerError{400, 10001, "数据输入错误", "版本检查错误", ""}
	ErrTransferData = &ControllerError{500, 20001, "数据转换错误", "Json 字符串转 Map 错误", ""}
)
View Source 
var (
	Actionsuccess = &ControllerError{200, 90000, "操作成功", "操作成功", ""}
)

Functions

func AESDecrypt 

func AESDecrypt(cipherBytes, key, iv []byte) ([]byte, error)

AESDecrypt AES解密

func AesDecrypt 

func AesDecrypt(crypted, key []byte) ([]byte, error)

func AesEncrypt 

func AesEncrypt(origData, key []byte) ([]byte, error)

func Bin 

func Bin(i int, prefix bool) string

/////////////////////////////////////////////////

func Bin2int 

func Bin2int(binStr string) int

func ByteToFloat32 

func ByteToFloat32(bytes []byte) float32

func BytesReverse 

func BytesReverse(src []byte) []byte

func BytesToInt 

func BytesToInt(b []byte) int64

字节数组转整数

func CalculateCRC 

func CalculateCRC(crcParams *Parameters, data []byte) uint64

CalculateCRC implements simple straight forward bit by bit calculation. It is relatively slow for large amounts of data, but does not require any preparation steps. As a result, it might be faster in some cases then building a table required for faster calculation.

func Create_token 

func Create_token(appid string, secret string, exp int64) (string, int64)

func DecodeWeAppUserInfo 

func DecodeWeAppUserInfo(encryptedData string, sessionKey string, iv string) (string, error)

DecodeWeAppUserInfo 解密微信小程序用户信息

func Encode 

func Encode(dst, src []byte) int

func EncodeByteArrayToString 

func EncodeByteArrayToString(src []byte) string

func EncodedLen 

func EncodedLen(n int) int

func FormatHex 

func FormatHex(hexStr string, length int) string

func FormatStr 

func FormatStr(str string, length int) string

func GeneratePassHash 

func GeneratePassHash(password string, salt string) (hash string, err error)

func GenerateSalt 

func GenerateSalt() (salt string, err error)

func GetGuid 

func GetGuid() string

func GetMd5String 

func GetMd5String(s string) string

生成GUID编码

func GetQrByte 

func GetQrByte(chd string, chs int, qrType int) (file []byte)

func GetSerialNumber 

func GetSerialNumber() string

func Hex2int 

func Hex2int(hexStr string) int

func Hex2int16 

func Hex2int16(hexStr string) int

func Hex2int64 

func Hex2int64(hexStr string) int64

func HexStr2byte 

func HexStr2byte(hexStr string) []byte

func HexStr2float32 

func HexStr2float32(hexStr string) float32

func HexStr_and 

func HexStr_and(hexStr1 string, hexStr2 string) string

func HttpDo 

func HttpDo(method string, uri string, header http.Header, data string, params string) string

func Int162hex 

func Int162hex(i int64, prefix bool) string

func Int2hex 

func Int2hex(i int, prefix bool) string

func Int322hex 

func Int322hex(i int64, prefix bool) string

func Int642hex 

func Int642hex(i int64, prefix bool) string

func IntToBytes 

func IntToBytes(n int64) []byte

用于UTC时间戳转换

func Oct 

func Oct(i int, prefix bool) string

func Oct2int 

func Oct2int(octStr string) int

func PKCS5Padding 

func PKCS5Padding(ciphertext []byte, blockSize int) []byte

func PKCS5UnPadding 

func PKCS5UnPadding(origData []byte) []byte

func PKCS7UnPadding 

func PKCS7UnPadding(dst []byte, blockSize int) []byte

PKCS7UnPadding pkcs7填充方式

func Str2hex 

func Str2hex(str string, length int) (hexStr string)

func SubStr 

func SubStr(str string, start, length int) string

func To_md5 

func To_md5(encode string) (decode string)

func Token_auth 

func Token_auth(signedToken, secret string) (string, error)

Types

type Claims 

type Claims struct {
	Appid string `json:"appid"`
	// recommended having
	jwt.StandardClaims
}

type ControllerError 

type ControllerError struct {
	Status   int    `json:"status"`
	Code     int    `json:"code"`
	Type     string `json:"type"`
	Message  string `json:"message"`
	MoreInfo string `json:"more_info"`
}

type ControllerSuccess 

type ControllerSuccess struct {
	Status int         `json:"status"`
	Data   interface{} `json:"data"`
}

type Hash 

type Hash struct {
	// contains filtered or unexported fields
}

Hash represents the partial evaluation of a checksum using table-driven implementation. It also implements hash.Hash interface.

func NewHash 

func NewHash(crcParams *Parameters) *Hash

NewHash creates a new Hash instance configured for table driven CRC calculation according to parameters specified.

func (*Hash) BlockSize 

func (h *Hash) BlockSize() int

BlockSize returns the hash's underlying block size. The Write method must be able to accept any amount of data, but it may operate more efficiently if all writes are a multiple of the block size. See hash.Hash interface.

func (*Hash) CRC 

func (h *Hash) CRC() uint64

CRC returns current CRC value for the data processed so far.

func (*Hash) CRC16 

func (h *Hash) CRC16() uint16

CRC16 is a convenience method to spare end users from explicit type conversion every time this package is used. Underneath, it just calls CRC() method.

func (*Hash) CRC32 

func (h *Hash) CRC32() uint32

CRC32 is a convenience method to spare end users from explicit type conversion every time this package is used. Underneath, it just calls CRC() method.

func (*Hash) CalculateCRC 

func (h *Hash) CalculateCRC(data []byte) uint64

CalculateCRC is a convenience function allowing to calculate CRC in one call.

func (*Hash) GetTable 

func (h *Hash) GetTable() []uint64

func (*Hash) Reset 

func (h *Hash) Reset()

Reset resets the Hash to its initial state. See hash.Hash interface.

func (*Hash) Size 

func (h *Hash) Size() int

Size returns the number of bytes Sum will return. See hash.Hash interface.

func (*Hash) Sum 

func (h *Hash) Sum(in []byte) []byte

Sum appends the current hash to b and returns the resulting slice. It does not change the underlying hash state. See hash.Hash interface.

func (*Hash) Update 

func (h *Hash) Update(p []byte)

Update updates process supplied bytes and updates current (partial) CRC accordingly.

func (*Hash) Write 

func (h *Hash) Write(p []byte) (n int, err error)

Write implements io.Writer interface which is part of hash.Hash interface.

type Parameters 

type Parameters struct {
	Width      uint   // Width of the CRC expressed in bits
	Polynomial uint64 // Polynomial used in this CRC calculation
	ReflectIn  bool   // ReflectIn indicates whether input bytes should be reflected
	ReflectOut bool   // ReflectOut indicates whether input bytes should be reflected
	Init       uint64 // Init is initial value for CRC calculation
	FinalXor   uint64 // Xor is a value for final xor to be applied before returning result
}

Parameters represents set of parameters defining a particular CRC algorithm.

Source Files

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