Created
July 26, 2019 10:53
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Netlify CMS auth cloud function
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| const express = require("express"); | |
| const simpleOauth = require("simple-oauth2"); | |
| const randomstring = require("randomstring"); | |
| const oauth_provider = "github"; | |
| function getScript(mess, content) { | |
| return `<!doctype html><html><body><script> | |
| (function() { | |
| function receiveMessage(e) { | |
| console.log("receiveMessage %o", e) | |
| window.opener.postMessage( | |
| 'authorization:github:${mess}:${JSON.stringify(content)}', | |
| e.origin | |
| ) | |
| window.removeEventListener("message",receiveMessage,false); | |
| } | |
| window.addEventListener("message", receiveMessage, false) | |
| console.log("Sending message: %o", "github") | |
| window.opener.postMessage("authorizing:github", "*") | |
| })() | |
| </script></body></html>`; | |
| } | |
| const oauth2 = simpleOauth.create({ | |
| client: { | |
| id: process.env.OAUTH_CLIENT_ID, | |
| secret: process.env.OAUTH_CLIENT_SECRET | |
| }, | |
| auth: { | |
| tokenHost: "https://github.com", | |
| tokenPath: "/login/oauth/access_token", | |
| authorizePath: "/login/oauth/authorize" | |
| } | |
| }); | |
| const app = express(); | |
| app.get("/auth", (req, res) => { | |
| const authorizationUri = oauth2.authorizationCode.authorizeURL({ | |
| redirect_uri: process.env.REDIRECT_URL, | |
| scope: "repo,user", | |
| state: randomstring.generate(32) | |
| }); | |
| res.redirect(authorizationUri); | |
| }); | |
| app.get("/callback", (req, res) => { | |
| var options = { | |
| code: req.query.code | |
| }; | |
| return oauth2.authorizationCode | |
| .getToken(options) | |
| .then(result => { | |
| const token = oauth2.accessToken.create(result); | |
| return res.send( | |
| getScript("success", { | |
| token: token.token.access_token, | |
| provider: oauth_provider | |
| }) | |
| ); | |
| }) | |
| .catch(error => { | |
| console.error("Access Token Error", error.message); | |
| res.send(getScript("error", error)); | |
| }); | |
| }); | |
| app.get("/success", (req, res) => { | |
| res.send(""); | |
| }); | |
| exports.netlifyOauth = app; |
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