Merge branch 'master' of https://github.com/browngraphicslab/Dash-Web into script_documents

1 files changed, 268 insertions, 0 deletions

diff --git a/src/server/authentication/AuthenticationManager.ts b/src/server/authentication/AuthenticationManager.ts
new file mode 100644
index 000000000..00f1fe44e
--- /dev/null
+++ b/src/server/authentication/AuthenticationManager.ts
@@ -0,0 +1,268 @@
+import { default as User, DashUserModel } from "./DashUserModel";
+import { Request, Response, NextFunction } from "express";
+import * as passport from "passport";
+import { IVerifyOptions } from "passport-local";
+import "./Passport";
+import flash = require("express-flash");
+import * as async from 'async';
+import * as nodemailer from 'nodemailer';
+import c = require("crypto");
+import { Utils } from "../../Utils";
+import { MailOptions } from "nodemailer/lib/stream-transport";
+
+/**
+ * GET /signup
+ * Directs user to the signup page
+ * modeled by signup.pug in views
+ */
+export let getSignup = (req: Request, res: Response) => {
+    if (req.user) {
+        return res.redirect("/home");
+    }
+    res.render("signup.pug", {
+        title: "Sign Up",
+        user: req.user,
+    });
+};
+
+/**
+ * POST /signup
+ * Create a new local account.
+ */
+export let postSignup = (req: Request, res: Response, next: NextFunction) => {
+    req.assert("email", "Email is not valid").isEmail();
+    req.assert("password", "Password must be at least 4 characters long").len({ min: 4 });
+    req.assert("confirmPassword", "Passwords do not match").equals(req.body.password);
+    req.sanitize("email").normalizeEmail({ gmail_remove_dots: false });
+
+    const errors = req.validationErrors();
+
+    if (errors) {
+        return res.redirect("/signup");
+    }
+
+    const email = req.body.email as String;
+    const password = req.body.password;
+
+    const model = {
+        email,
+        password,
+        userDocumentId: Utils.GenerateGuid()
+    } as Partial<DashUserModel>;
+
+    const user = new User(model);
+
+    User.findOne({ email }, (err, existingUser) => {
+        if (err) { return next(err); }
+        if (existingUser) {
+            return res.redirect("/login");
+        }
+        user.save((err: any) => {
+            if (err) { return next(err); }
+            req.logIn(user, (err) => {
+                if (err) { return next(err); }
+                tryRedirectToTarget(req, res);
+            });
+        });
+    });
+
+};
+
+const tryRedirectToTarget = (req: Request, res: Response) => {
+    if (req.session && req.session.target) {
+        const target = req.session.target;
+        req.session.target = undefined;
+        res.redirect(target);
+    } else {
+        res.redirect("/home");
+    }
+};
+
+
+/**
+ * GET /login
+ * Login page.
+ */
+export let getLogin = (req: Request, res: Response) => {
+    if (req.user) {
+        req.session!.target = undefined;
+        return res.redirect("/home");
+    }
+    res.render("login.pug", {
+        title: "Log In",
+        user: req.user
+    });
+};
+
+/**
+ * POST /login
+ * Sign in using email and password.
+ * On failure, redirect to signup page
+ */
+export let postLogin = (req: Request, res: Response, next: NextFunction) => {
+    req.assert("email", "Email is not valid").isEmail();
+    req.assert("password", "Password cannot be blank").notEmpty();
+    req.sanitize("email").normalizeEmail({ gmail_remove_dots: false });
+
+    const errors = req.validationErrors();
+
+    if (errors) {
+        req.flash("errors", "Unable to login at this time. Please try again.");
+        return res.redirect("/signup");
+    }
+
+    passport.authenticate("local", (err: Error, user: DashUserModel, _info: IVerifyOptions) => {
+        if (err) { next(err); return; }
+        if (!user) {
+            return res.redirect("/signup");
+        }
+        req.logIn(user, (err) => {
+            if (err) { next(err); return; }
+            tryRedirectToTarget(req, res);
+        });
+    })(req, res, next);
+};
+
+/**
+ * GET /logout
+ * Invokes the logout function on the request
+ * and destroys the user's current session.
+ */
+export let getLogout = (req: Request, res: Response) => {
+    req.logout();
+    const sess = req.session;
+    if (sess) {
+        sess.destroy((err) => { if (err) { console.log(err); } });
+    }
+    res.redirect("/login");
+};
+
+export let getForgot = function (req: Request, res: Response) {
+    res.render("forgot.pug", {
+        title: "Recover Password",
+        user: req.user,
+    });
+};
+
+export let postForgot = function (req: Request, res: Response, next: NextFunction) {
+    const email = req.body.email;
+    async.waterfall([
+        function (done: any) {
+            c.randomBytes(20, function (err: any, buffer: Buffer) {
+                if (err) {
+                    done(null);
+                    return;
+                }
+                done(null, buffer.toString('hex'));
+            });
+        },
+        function (token: string, done: any) {
+            User.findOne({ email }, function (err, user: DashUserModel) {
+                if (!user) {
+                    // NO ACCOUNT WITH SUBMITTED EMAIL
+                    res.redirect("/forgotPassword");
+                    return;
+                }
+                user.passwordResetToken = token;
+                user.passwordResetExpires = new Date(Date.now() + 3600000); // 1 HOUR
+                user.save(function (err: any) {
+                    done(null, token, user);
+                });
+            });
+        },
+        function (token: Uint16Array, user: DashUserModel, done: any) {
+            const smtpTransport = nodemailer.createTransport({
+                service: 'Gmail',
+                auth: {
+                    user: 'brownptcdash@gmail.com',
+                    pass: 'browngfx1'
+                }
+            });
+            const mailOptions = {
+                to: user.email,
+                from: 'brownptcdash@gmail.com',
+                subject: 'Dash Password Reset',
+                text: 'You are receiving this because you (or someone else) have requested the reset of the password for your account.\n\n' +
+                    'Please click on the following link, or paste this into your browser to complete the process:\n\n' +
+                    'http://' + req.headers.host + '/resetPassword/' + token + '\n\n' +
+                    'If you did not request this, please ignore this email and your password will remain unchanged.\n'
+            } as MailOptions;
+            smtpTransport.sendMail(mailOptions, function (err: Error | null) {
+                // req.flash('info', 'An e-mail has been sent to ' + user.email + ' with further instructions.');
+                done(null, err, 'done');
+            });
+        }
+    ], function (err) {
+        if (err) return next(err);
+        res.redirect("/forgotPassword");
+    });
+};
+
+export let getReset = function (req: Request, res: Response) {
+    User.findOne({ passwordResetToken: req.params.token, passwordResetExpires: { $gt: Date.now() } }, function (err, user: DashUserModel) {
+        if (!user || err) {
+            return res.redirect("/forgotPassword");
+        }
+        res.render("reset.pug", {
+            title: "Reset Password",
+            user: req.user,
+        });
+    });
+};
+
+export let postReset = function (req: Request, res: Response) {
+    async.waterfall([
+        function (done: any) {
+            User.findOne({ passwordResetToken: req.params.token, passwordResetExpires: { $gt: Date.now() } }, function (err, user: DashUserModel) {
+                if (!user || err) {
+                    return res.redirect('back');
+                }
+
+                req.assert("password", "Password must be at least 4 characters long").len({ min: 4 });
+                req.assert("confirmPassword", "Passwords do not match").equals(req.body.password);
+
+                if (req.validationErrors()) {
+                    return res.redirect('back');
+                }
+
+                user.password = req.body.password;
+                user.passwordResetToken = undefined;
+                user.passwordResetExpires = undefined;
+
+                user.save(function (err) {
+                    if (err) {
+                        res.redirect("/login");
+                        return;
+                    }
+                    req.logIn(user, function (err) {
+                        if (err) {
+                            return;
+                        }
+                    });
+                    done(null, user);
+                });
+            });
+        },
+        function (user: DashUserModel, done: any) {
+            const smtpTransport = nodemailer.createTransport({
+                service: 'Gmail',
+                auth: {
+                    user: 'brownptcdash@gmail.com',
+                    pass: 'browngfx1'
+                }
+            });
+            const mailOptions = {
+                to: user.email,
+                from: 'brownptcdash@gmail.com',
+                subject: 'Your password has been changed',
+                text: 'Hello,\n\n' +
+                    'This is a confirmation that the password for your account ' + user.email + ' has just been changed.\n'
+            } as MailOptions;
+            smtpTransport.sendMail(mailOptions, function (err) {
+                done(null, err);
+            });
+        }
+    ], function (err) {
+        res.redirect("/login");
+    });
+};
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