passport-alipay.js
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/**
* passport.js 支付宝登录插件
*
* @author JiangFeng<jeff.jiang@yoho.cn>
* @date 2016/06/21
*/
'use strict';
const util = require('util');
const _ = require('lodash');
const md5 = require('md5');
const passport = require('passport-strategy');
// 支付宝网关地址
const ALIPAY_URL = 'https://mapi.alipay.com/gateway.do';
const defaultOptions = {
service: 'alipay.auth.authorize',
_input_charset: 'utf-8',
sign_type: 'MD5',
target_service: 'user.auth.quick.login'
};
/**
* 将参数排序，拼接成 "参数=参数值" 的格式
*
* @param {Object} params
*/
function paramsToRaw(params) {
let keys = Object.keys(params);
keys = keys.sort();
let string = '';
keys.forEach((key) => {
string += '&' + key + '=' + params[key];
});
string = string.substr(1);
return string;
}
function AlipayStrategy(options, verify) {
if (typeof options === 'function') {
verify = options;
options = {};
}
options = options || {};
passport.Strategy.call(this);
this.name = 'alipay';
this._verify = verify;
this._options = options;
}
util.inherits(AlipayStrategy, passport.Strategy);
AlipayStrategy.prototype.authenticate = function(req, options) {
if (req.query && req.query.is_success && req.query.sign && req.query.sign_type) {
let query = req.query;
let sign = query.sign;
let signType = query.sign_type;
delete query.sign_type;
delete query.sign;
let signString = paramsToRaw(query) + this._options.key;
if (signType === 'MD5' && sign !== md5(signString)) {
this.error('alipay callback sign check fail');
this.fail('alipay callback sign check fail');
}
if (req.query.is_success === 'T') {
let user = {
userId: req.query.user_id,
realName: req.query.real_name,
email: req.query.email
};
this.success(user, null);
} else {
this.error('alipay login fail');
this.fail(req.error_code);
}
} else {
let params = _.assign(defaultOptions, this._options, options);
let signType = params.sign_type;
let key = params.key;
delete params.sign_type;
delete params.sign;
delete params.key;
let signString = paramsToRaw(params) + key;
if (signType === 'MD5') {
params.sign = md5(signString);
params.sign_type = 'MD5';
}
this.redirect(ALIPAY_URL + '?' + paramsToRaw(params));
}
};
exports = module.exports = AlipayStrategy;
exports.Strategy = AlipayStrategy;