const crypto = require('crypto')
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const {
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isPlainObject
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} = require('../../../common/utils')
|
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// 退款通知解密key=md5(key)
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function decryptData (encryptedData, key, iv = '') {
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// 解密
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const decipher = crypto.createDecipheriv('aes-128-cbc', key, iv)
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// 设置自动 padding 为 true，删除填充补位
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decipher.setAutoPadding(true)
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let decoded = decipher.update(encryptedData, 'base64', 'utf8')
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decoded += decipher.final('utf8')
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return decoded
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}
|
|
function md5 (str, encoding = 'utf8') {
|
return crypto
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.createHash('md5')
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.update(str, encoding)
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.digest('hex')
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}
|
|
function sha256 (str, key, encoding = 'utf8') {
|
return crypto
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.createHmac('sha256', key)
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.update(str, encoding)
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.digest('hex')
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}
|
|
function getSignStr (obj) {
|
return Object.keys(obj)
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.filter(key => key !== 'sign' && obj[key] !== undefined && obj[key] !== '')
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.sort()
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.map(key => key + '=' + obj[key])
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.join('&')
|
}
|
|
function getNonceStr (length = 16) {
|
let str = ''
|
while (str.length < length) {
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str += Math.random().toString(32).substring(2)
|
}
|
return str.substring(0, length)
|
}
|
|
// 简易版Object转XML，只可在微信支付时使用，不支持嵌套
|
function buildXML (obj, rootName = 'xml') {
|
const content = Object.keys(obj).map(item => {
|
if (isPlainObject(obj[item])) {
|
return `<${item}><![CDATA[${JSON.stringify(obj[item])}]]></${item}>`
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} else {
|
return `<${item}><![CDATA[${obj[item]}]]></${item}>`
|
}
|
})
|
return `<${rootName}>${content.join('')}</${rootName}>`
|
}
|
|
function isXML (str) {
|
const reg = /^(<\?xml.*\?>)?(\r?\n)*<xml>(.|\r?\n)*<\/xml>$/i
|
return reg.test(str.trim())
|
};
|
|
// 简易版XML转Object，只可在微信支付时使用，不支持嵌套
|
function parseXML (xml) {
|
const xmlReg = /<(?:xml|root).*?>([\s|\S]*)<\/(?:xml|root)>/
|
const str = xmlReg.exec(xml)[1]
|
const obj = {}
|
const nodeReg = /<(.*?)>(?:<!\[CDATA\[){0,1}(.*?)(?:\]\]>){0,1}<\/.*?>/g
|
let matches = null
|
// eslint-disable-next-line no-cond-assign
|
while ((matches = nodeReg.exec(str))) {
|
obj[matches[1]] = matches[2]
|
}
|
return obj
|
}
|
|
module.exports = {
|
decryptData,
|
md5,
|
sha256,
|
getSignStr,
|
getNonceStr,
|
buildXML,
|
parseXML,
|
isXML
|
}
|
