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Malicious npm Packages Inject SSH Backdoors via Typosquatted Libraries
Socket’s threat research team has detected six malicious npm packages typosquatting popular libraries to insert SSH backdoors.
check-data
Advanced tools
$ npm install check-data --save
let Validator = require('check-data')
let { error, data } = Validator(data, options, customize)
data
Objcte, Array, String, Number, Date, Boolean - 输入待验证数据
options
Objcte, Array, Function - 数据验证表达式,类型参考type选项
handler
Objcte - 自定义数据构建对象,根据输入数据生成新的数据结构(可选)
handler.$
Function - 数据构建方法,函数名称与输出data对象中的key相对应。通过this或第一个函数参数可快速获取验证结果。(函数返回对象中同样支持多层嵌套函数表达式,可适应更多的应用场景。)
error
String - 验证失败时返回的错误信息,包含错误的具体位置信息,仅供开发者调试使用
data
Objcte - 经过验证、处理后导出数据,内置空值过滤,自动剔除对象、数组中的空字符串、undefind值。(更多空值过滤特性请参考filter-null模块)
msg
String - 验证失败后返回的错误信息,相对于error而言,msg对用户更加友好,可直接在客户端显示
type
String, Number, Object, Array, Date, Boolean, "MongoId", "MobilePhone", 'Email' - 数据类型,扩展类型用字符串表示
name
String - 自定义参数名称,用于错误返回值中替换默认参数名
default
* - 默认赋值
value
* - 直接通过表达式赋值,类似于default选项,区别是不管值是否为空都将使用该值覆盖(优先级低于default,目前没有发现同时使用的应用场景)
allowNull
Boolean - 是否允许为空(默认将undefined和空字符串被视为空),缺省值为true。当值为false时,必须正确匹配指定的数据类型,否则会提示数据类型错误。
ignore
Array - 忽略指定的值,在字段级覆盖对默认空值的定义,如将某个指定字段的空值定义为[null, ""]
and
Array、Function - 声明依赖的参数名数组,支持数组和函数两种表达式,函数表达式用于声明指定值的依赖关系。要求依赖的所有参数都不能为空
or
Array、Function - 与and相似,区别是只要求依赖的其中一个参数不为空即可
handle
Function - 参数自定义转换方法,非空值时执行(原method方法更名为handle)。
minLength
Number - 限制字符串最小长度
maxLength
Number - 限制字符串最大长度
reg
RegExp - 正则表达式验证
in
Array - 匹配多个可选值中的一个
min
Number - 限制最小值
max
Number - 限制最大值
in
Array - 匹配多个可选值中的一个
to
* - 类型转换,仅支持Boolean值
minLength
Number - 限制字符串最小长度
maxLength
Number - 限制字符串最大长度
仅支持类型验证
仅支持类型验证
验证mongodb中的ObjectId
验证手机号
验证Email
通过Validator.use()方法添加自定义的数据类型,使用方法和扩展类型一样,用字符串声明数据类型
Validator.use(name, options)
# 示例
Validator.use('Int', {
type({ data }) {
if (Number.isInteger(data)) {
return { data }
} else {
return { error: '必须为Int类型' }
}
},
})
通过预定义schema,实现options单例复用(option为静态数据),避免频繁创建重复的实例,可节省内存和减少计算开销。在环境允许的情况下应优先考虑schema方式。
Validator.schema(name, options)
let schema = Validator.schema('demo', {
a: {
a1: {
type: Number,
allowNull: false
},
a2: {
type: Number,
allowNull: false
}
},
b: Number,
})
let json = {
a: {
a1: "jj",
a2: "12",
},
b: 2,
c: 888,
}
let { error, data } = schema(json)
// 或
let { error, data } = Validator.demo(json)
// 一维数组
let { error, data } = Validator(["a", "b", "c"], [String])
// 内嵌对象
let { error, data } = Validator([{
"a":1,
"b":"bibi",
"c":"test"
},{
"a":1,
"b":"bibi",
"c":"test"
}], [{
a: Number,
b: String,
c: String
}])
let { error, data } = Validator({
"a": 1,
"b": "xx",
"c": [1,32,34],
"d": 666
}, {
"a": Number,
"b": String,
"c": [String],
"d": Number
})
let { error, data } = Validator({
"username": "莉莉",
"addressee": "嘟嘟",
}, {
"username": {
"type": String,
// 使用数组表达式
"and": ["addressee", "address"],
},
"addressee": {
"type": String,
"allowNull": true
},
"address": {
"type": String,
"allowNull": true,
// 使用函数表达式,表示特定值的依赖关系
and(value){
if (value === 1) {
return ["addressee", "address"]
} else if (value === 2) {
return ["username", "xx"]
}
},
}
})
let { error, data } = Validator({
"username": "莉莉",
"addressee": "嘟嘟",
}, {
"username": {
"type": String,
"or": ["addressee", "address"]
},
"addressee": {
"type": String,
"allowNull": true
},
"address": {
"type": String,
"allowNull": true
}
})
let { error, data } = Validator({
"id": "5968d3b4956fe04299ea5c18",
"mobilePhone": "18555555555",
}, {
"id": "MongoId",
"mobilePhone": "MobilePhone"
})
# 输入数据
let json = {
"username": "测试",
"num": "123456789987",
"time": "2017-07-07T09:53:30.000Z",
"files": ["abc.js", "334", "null", "666", , , "kkk.js"],
"user": {
"username": "莉莉",
"age": 18,
},
"list": [
{
"username": "吖吖",
"age": 16,
},
{
"username": "可可",
"age": 15,
}
],
"auth": {
"weixin": "abc",
},
"beneficiariesName": "莉莉",
"guaranteeMoney": 2,
"guaranteeFormat": 0,
"addressee": "嘟嘟",
"receiveAddress": "北京市",
"phone": "18666666666",
"coupon": "uuuu",
"integral": {
"lala": 168,
"kaka": "3"
},
"search": "深圳",
"email": "xxx@xx.xx"
}
# 验证表达式
let { error, data } = Validator(json,
{
"username": {
"type": String,
"name": "用户名",
"allowNull": false
},
"num": String,
"time": {
"type": Date,
"name": "时间",
"allowNull": false,
},
"user": {
"username": String,
"age": Number,
},
"list": [{
"username": String,
"age": Number,
}],
"auth": {
"weixin": String,
},
"beneficiariesName": String,
"guaranteeMoney": {
"type": Number,
"in": [1, 2]
},
"files": [{
"type": String,
"allowNull": false,
}],
"guaranteeFormat": {
"type": Number,
"conversion": Boolean
},
"addressee": {
"type": String,
"value": "直接通过表达式赋值"
},
"search": String,
"phone": {
"type": "MobilePhone"
},
"receiveAddress": String,
"coupon": {
"type": String,
handle(value) {
return { "$gt": new Date() }
}
},
"integral": {
"lala": {
"type": Number,
},
"kaka": {
"type": Number,
"in": [1, 2, 3],
}
},
"email": {
"type": 'Email',
},
},
{
filter({ search, email, integral }) {
return {
"email": email,
"integral": integral,
"test": {
a: 1,
b: undefined,
c: "",
d: null,
e: NaN,
e: 0,
},
}
}
}
)
FAQs
JS数据验证、转换递归器
The npm package check-data receives a total of 2 weekly downloads. As such, check-data popularity was classified as not popular.
We found that check-data demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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