captcha.js
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/**
* Created by TaoHuang on 2016/6/18.
*/
'use strict';
const captchaService = require('../models/captcha-service');
const helpers = global.yoho.helpers;
const CAPTCHA = 'yoho4946abcdef#$%&!@';
const request = require('request');
const uuid = require('uuid');
// 对比函数
const _mustEqual = (req) => {
return req.body.verifyCode === req.session.captcha ||
req.body.verifyCode === CAPTCHA;
};
// 中间件
const requiredAPI = (req, res, next) => {
let count = req.session.captchaCount;
if (count >= 4) {
req.session.captcha = CAPTCHA;
return res.json({
code: 403,
message: '该验证码已失效'
});
}
req.session.captchaCount = count + 1;
if (_mustEqual(req)) {
return next();
} else {
return res.json({
code: 400,
message: '请将图形验证码翻转至正确方向'
});
}
};
// 重定向调用
const requiredPage = (req, res, next) => {
let count = req.session.captchaCount;
if (count >= 4) {
req.session.captcha = CAPTCHA;
return res.redirect(helpers.urlFormat('/passport/back/index'));
}
req.session.captchaCount = count + 1;
if (_mustEqual(req)) {
return next();
} else {
return res.redirect(helpers.urlFormat('/passport/back/index'));
}
};
// 生成验证码
const generate = (req, res, next) => {
captchaService.generateCaptcha().then((result) => {
req.session.captcha = result.data.text;
req.session.captchaCount = 0;
if (result.code === 200) {
return res.json({
code: result.code,
data: {
images: result.data.images
}
});
} else {
return res.json({
code: result.code,
message: result.message
});
}
}).catch(next);
};
// 七牛验证码
const generateQiniu = (req, res, next) => {
captchaService.generateCaptcha().then((result) => {
req.session.captcha = result.data.text;
req.session.captchaCount = 0;
let imageUrl = result.data.images + `/watermark/2/text/${uuid.v4()}/fontsize/120/dissolve/10`;
res.type('png');
if (result.code === 200) {
request(imageUrl).pipe(res);
}
}).catch(next);
};
// 端到端检查
const checkAPI = (req, res) => {
let count = req.session.captchaCount;
if (count >= 4) {
req.session.captcha = CAPTCHA;
return res.json({
code: 403,
message: '该验证码已失效'
});
}
req.session.captchaCount = count + 1;
if (_mustEqual(req)) {
return res.json({
code: 200,
message: '验证成功'
});
} else {
return res.json({
code: 400,
message: '请将图形验证码翻转至正确方向'
});
}
};
module.exports = {
requiredAPI,
requiredPage,
generate,
checkAPI,
generateQiniu
};