captcha.js
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'use strict';
const _ = require('lodash');
const logger = global.yoho.logger;
let imgCheckAPI = require('../models/imgcheck');
const request = require('request');
const uuid = require('uuid');
exports.get = (req, res, next) => {
let data = {
src: ''
};
return imgCheckAPI.gen().then(result => {
if (result.code === 200 && result.data) {
let codeStr = result.data.degrees.reduce((str, rotate) => {
return str.concat((4 - rotate / 90 % 4) % 4);
}, '');
req.session.captcha = codeStr;
req.session.captchaSrc = result.data.verifiedGraphicCode;
data.src = `/passport/img-check.jpg?t=${Date.now()}`;
return res.json(data);
}
next();
}).catch(next);
};
exports.imgCheck = (req, res, next) => {
return imgCheckAPI.gen().then(result => {
if (result.code === 200 && result.data) {
let codeStr = result.data.degrees.reduce((str, rotate) => {
return str.concat((4 - rotate / 90 % 4) % 4);
}, '');
req.session.captcha = codeStr;
req.session.captchaTimeout = new Date().getTime() + 1000 * 60;
req.session.captchaSrc = result.data.verifiedGraphicCode;
return request(`${result.data.verifiedGraphicCode}?imageView2/0/format/jpg/q/70|watermark/2/text/${uuid.v4()}/fontsize/120/dissolve/10`).pipe(res); // eslint-disable-line
}
next();
}).catch(next);
};
/**
* 验证img-check验证码
*/
exports.validate = (req, res, next) => {
let captchaInput = req.body.captcha;
let captchaCode = _.get(req.session, 'captcha');
let captchaTimeout = _.get(req.session, 'captchaTimeout');
if (new Date().getTime() > captchaTimeout) {
_.set(req.session, 'captchaValidCount', 5);
req.session.captcha = null;
return res.json({
code: 400,
message: '验证码超时，请重试',
changeCaptcha: true,
captchaShow: true
});
}
let errorCount = _.get(req.session, 'captchaValidCount'); // 初始1次 + 后续4次， 同一个验证码 共5次
let jsonData = {
code: 400,
message: '请将图片旋转到正确方向',
captchaShow: true
};
logger.info(`captcha validate result：${(captchaInput && captchaInput.toString()) === captchaCode},user:${captchaInput};server:${captchaCode}`); // eslint-disable-line
_.set(req.session, 'captchaValidCount', errorCount - 1);
if (!errorCount) {
_.set(req.session, 'captchaValidCount', 5);
req.session.captcha = null;
jsonData.changeCaptcha = true;
}
if (!(captchaInput && captchaCode && captchaInput === captchaCode)) {
return res.json(jsonData);
}
req.session.captcha = null;
req.session.captchaValidCount = null;
req.session.useYohoCaptcha = null;
return next();
};