From 6731de13eab82469ac0ccd365cf84586b08ee0c5 Mon Sep 17 00:00:00 2001
From: gumi <git@gumi.ca>
Date: Sat, 25 May 2019 21:07:57 -0400
Subject: use integrated nodemailer and connect to tmwa-admin directly

---
 src/api.js                              |  16 +-
 src/routers/tmwa/middlewares/account.js | 276 ++++++++++++++++++--------------
 2 files changed, 157 insertions(+), 135 deletions(-)

(limited to 'src')

diff --git a/src/api.js b/src/api.js
index 4e1e6f8..33cfb42 100644
--- a/src/api.js
+++ b/src/api.js
@@ -1,5 +1,4 @@
 const express = require("express"); // from npm registry
-const mysql = require("mysql"); // from npm registry
 const https = require("https"); // built-in
 const api = express();
 
@@ -13,6 +12,9 @@ if (process.env.npm_package_config_port === undefined) {
 // config common to all routers:
 api.locals = Object.assign({
     rate_limiting: new Set(), // XXX: or do we want routers to each have their own rate limiter?
+    mailer: {
+        from: process.env.npm_package_config_mailer_from,
+    }
 }, api.locals);
 
 
@@ -95,16 +97,8 @@ const tmwa_router = new (require("./routers/tmwa"))({
     timezone: process.env.npm_package_config_timezone,
     name: process.env.npm_package_config_tmwa_name,
     url: process.env.npm_package_config_tmwa_url,
-    db_pool: mysql.createPool({
-        connectionLimit: 10,
-        host           : process.env.npm_package_config_sql_host,
-        user           : process.env.npm_package_config_sql_user,
-        password       : process.env.npm_package_config_sql_password,
-        database       : process.env.npm_package_config_sql_database
-    }),
-    db_tables: {
-        register: process.env.npm_package_config_sql_table,
-    },
+    root: process.env.npm_package_config_tmwa_root,
+    home: process.env.npm_package_config_tmwa_home,
 }, api, checkCaptcha, checkRateLimiting);
 
 global_router.use("/tmwa", tmwa_router);
diff --git a/src/routers/tmwa/middlewares/account.js b/src/routers/tmwa/middlewares/account.js
index 9c3afce..3c82dbc 100644
--- a/src/routers/tmwa/middlewares/account.js
+++ b/src/routers/tmwa/middlewares/account.js
@@ -1,4 +1,93 @@
-const randomNumber = require("random-number-csprng");
+// this whole file would be a lot prettier with typescript interfaces
+"use strict";
+const uuidv4 = require("uuid/v4");
+const execFile = require("child_process").execFile;
+const spawn = require("child_process").spawn;
+const ripgrep = require("ripgrep-bin");
+const nodemailer = require("nodemailer");
+
+const execAsync = (cmd, par) =>
+    new Promise((resolve, reject) =>
+        execFile(cmd, par, (error, stdout, stderr) =>
+            resolve(error ? "" : (stdout ? stdout : stderr))));
+
+const tmwa_account_regex = new RegExp("^(?<id>[0-9]+)\t(?<name>[^\t]+)\t[^\t]+\t(?<time>[^\t]+)\t[MFSN]\t(?<logins>[0-9]+)\t(?<state>[0-9]+)\t(?<email>[^\t]+)\t[^\t]+\t[0-9]+\t(?<ip>[0-9\.]+)");
+const tmwa_char_regex = new RegExp("^(?<id>[0-9]+)\t(?<account>[0-9]+),[0-9]+\t(?<name>[^\t]+)\t");
+
+const parseAccountLine = (line) => {
+    const { groups: account } = tmwa_account_regex.exec(line);
+    return {
+        id: +account.id,
+        name: account.name,
+        last_login: Date.parse(account.time),
+        active: !!+account.logins,
+        banned: +account.state !== 0,
+        email: account.email === "a@a.com" ? null : account.email,
+        ip: (account.ip !== "0.0.0.0" && account.ip !== "127.0.0.1") ? account.ip : null,
+    };
+}
+
+const parseCharLine = (line) => {
+    const { groups: char } = tmwa_char_regex.exec(line);
+    return {
+        id: +char.id,
+        account: +char.account,
+        name: char.name,
+    };
+}
+
+const findAccounts = async (regex, max) => {
+    const stdout = await execAsync(ripgrep, ["--case-sensitive", `--max-count=${max}`, regex, "account.txt"]);
+    const accounts = new Set();
+    if (stdout.length)
+        stdout.slice(0, -1).split("\n").forEach(line => accounts.add(parseAccountLine(line)));
+    return accounts;
+};
+
+const findAccountsByID = async (account_id) => await findAccounts(`^${account_id}\t`, 1);
+const findAccountsByName = async (name) => await findAccounts(`^[0-9]+\t${name}\t`, 1);
+const findAccountsByEmail = async (email, max=20) => await findAccounts(`^[0-9]+\t[^\t]+\t[^\t]+\t[^\t]+\t[MFSN]\t[0-9]+\t[0-9]+\t${email}\t`, max);
+
+const findChars = async (regex, max) => {
+    const stdout = await execAsync(ripgrep, ["--case-sensitive", `--max-count=${max}`, regex, "athena.txt"]);
+    const chars = new Set();
+    if (stdout.length)
+        stdout.slice(0, -1).split("\n").forEach(line => chars.add(parseCharLine(line)));
+    return chars;
+};
+
+const findCharsByID = async (char_id) => await findChars(`^${char_id}\t`, 1);
+const findCharsByName = async (name) => await findChars(`^[0-9]+\t[0-9]+,[0-9]+\t${name}\t`, 1);
+const findCharsByAccount = async (account_id, max=20) => await findChars(`^[0-9]+\t${account_id},`, max);
+
+const findCharsByAccountName = async (name) => {
+    const accounts = await findAccountsByName(name);
+    if (accounts.size > 0)
+        return await findCharsByAccount(accounts.values().next().value.id);
+    else
+        return new Set();
+};
+
+const findCharsByEmail = async (email) => {
+    const chars = new Set();
+    const accounts = await findAccountsByEmail(email);
+    for (const account of accounts) {
+        const account_chars = await findCharsByAccount(account.id);
+        account_chars.forEach(char =>
+            chars.add(char))
+    }
+    return chars;
+};
+
+/// tmwa flatfile searching ^
+
+let transporter = nodemailer.createTransport({
+    sendmail: true,
+    newline: 'unix',
+    path: '/usr/sbin/sendmail'
+});
+
+const pending_operations = new Map();
 
 const create_account = (req, res, next) => {
     if (!req.body || !Reflect.has(req.body, "username") ||
@@ -17,50 +106,59 @@ const create_account = (req, res, next) => {
         return;
     }
 
-    req.app.locals.tmwa.db_pool.getConnection((err, db) => {
-        if (err) {
-            res.status(500).json({
+    findAccountsByName(req.body.username).then(acc => {
+        if (acc.size > 0) {
+            res.status(409).json({
                 status: "error",
-                error: "couldn't reach the database"
+                error: "already exists"
             });
-            console.warn("TMWA.account: a connection with the database couldn't be established");
+            req.app.locals.rate_limiting.add(req.ip);
+            setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 2000);
             return;
         }
 
-        const query_params = {
-            "USERNAME": req.body.username,
-            "PASSWORD": req.body.password,
-            "EMAIL": req.body.email || "a@a.com",
-            "GENDER": "N",
-        };
-
-        db.query(`INSERT INTO ${req.app.locals.tmwa.db_tables.register} SET ?`, query_params, (err, rows, fields) => {
-            if (err) {
-                if (err.code === "ER_DUP_ENTRY") {
-                    res.status(409).json({
-                        status: "error",
-                        error: "already exists"
-                    });
-                    req.app.locals.rate_limiting.add(req.ip);
-                    setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 2000);
-                } else {
-                    res.status(500).json({
-                        status: "error",
-                        error: "couldn't add the user"
-                    });
-                    console.error("TMWA.account: an unexpected sql error occured: %s", err.code);
-                }
-            } else {
-                res.status(201).json({
-                    status: "success"
-                });
-                console.info("TMWA.account: an account was created: %s [%s]", query_params.USERNAME, req.ip);
-                req.app.locals.rate_limiting.add(req.ip);
-                setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 300000);
+        const child = execFile(`${req.app.locals.tmwa.home}/.local/bin/tmwa-admin`, [], {
+            cwd: `${req.app.locals.tmwa.root}/login/`,
+            env: {
+                LD_LIBRARY_PATH: `${req.app.locals.tmwa.home}/.local/lib`,
             }
+        });
+
+        const email = req.body.email.length >= 3 ? req.body.email : "a@a.com";
+
+        child.stdin.write(`create ${req.body.username} N ${email} ${req.body.password}\n`);
+        child.stderr.on("data", data => {
+            console.error("TMWA.account: an unexpected tmwa-admin error occured: %s", data);
+            return;
+        });
+        child.stdout.on("data", data => {
+            if (!data.includes("successfully")) {
+                if (!data.includes("have a connection"))
+                    console.error("TMWA.account: an unexpected tmwa-admin error occured: %s", data);
+                child.kill();
+                return;
+            }
+
+            res.status(201).json({
+                status: "success"
+            });
+            console.info("TMWA.account: an account was created: %s [%s]", req.body.username, req.ip);
+            req.app.locals.rate_limiting.add(req.ip);
+            setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 300000);
+
+            if (email === "a@a.com")
+                return;
 
-            db.release(); // return this connection to the pool
+            transporter.sendMail({
+                from: req.app.locals.mailer.from,
+                to: email,
+                subject: "The Mana World account registration",
+                text: `Your account (\"${req.body.username}\") was created successfully.\nHave fun playing The Mana World!`
+            }, (err, info) => {
+                console.info("TMWA.account: sent account creation email: %s %s", req.body.username, info.messageId);
+            });
         });
+        child.stdin.end();
     });
 };
 
@@ -68,56 +166,27 @@ const create_account = (req, res, next) => {
 
 const reset_password = async (req, res, next) => {
     if (req.body && Reflect.has(req.body, "email") &&
-        Reflect.has(req.body, "username") &&
-        req.body.username.match(/^[a-zA-Z0-9]{4,23}$/) &&
         req.body.email.match(/^(?:[a-zA-Z0-9.$&+=_~-]{1,34}@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,35}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,34}[a-zA-Z0-9])?){0,9})$/) &&
-        req.body.email.length >= 3 && req.body.email.length < 40)
-    {
-        req.app.locals.tmwa.db_pool.getConnection(async (err, db) => {
-            if (err) {
-                res.status(500).json({
-                    status: "error",
-                    error: "couldn't reach the database"
-                });
-                console.warn("TMWA.account: a connection with the database couldn't be established");
-                return;
-            }
-
-            // XXX: we might want to use uuid instead, and put the value in the url directly
-            const rng = await randomNumber(1000000, 999999999999);
-            const code = String(rng).padStart(12, "0");
-
-            const query_params = { // SET
-                "PASSWORD": code,
-                "STATE": 3,
-            };
-
-            db.query(`UPDATE ${req.app.locals.tmwa.db_tables.register} SET ? WHERE USERNAME = ? AND EMAIL = ? AND STATE = 1`, [query_params, req.body.username, req.body.email], (err, rows, fields) => {
-                if (err) {
-                    res.status(500).json({
-                        status: "error",
-                        error: "couldn't send a password reset"
-                    });
-                    console.error("TMWA.account: an unexpected sql error occured: %s", err.code);
-                } else {
-                    res.status(200).json({
-                        status: "success"
-                    });
-                    req.app.locals.rate_limiting.add(req.ip);
-                    setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 5000);
-
-                    // TODO: make the request expire and change the STATE back to 1 upon expiration
-                }
-
-                db.release(); // return this connection to the pool
-            });
+        req.body.email.length >= 3 && req.body.email.length < 40 &&
+        req.body.email !== "a@a.com") {
+        // recover by email (currently unsupported)
+        res.status(501).json({
+            status: "error",
+            error: "not yet implemented"
+        });
+        return;
+    } else if (req.body && Reflect.has(req.body, "username") &&
+        req.body.username.match(/^[a-zA-Z0-9]{4,23}$/)) {
+        // recover by username (currently unsupported)
+        res.status(501).json({
+            status: "error",
+            error: "not yet implemented"
         });
         return;
     }
 
-    if (!req.body || !Reflect.has(req.body, "username") ||
-        !Reflect.has(req.body, "password") || !Reflect.has(req.body, "code") ||
-        !req.body.username.match(/^[a-zA-Z0-9]{4,23}$/) ||
+    if (!req.body || !Reflect.has(req.body, "password") ||
+        !Reflect.has(req.body, "code") ||
         !req.body.password.match(/^[a-zA-Z0-9]{4,23}$/) ||
         !req.body.code.match(/^[a-zA-Z0-9-_]{6,128}$/))
     {
@@ -130,48 +199,7 @@ const reset_password = async (req, res, next) => {
         return;
     }
 
-    req.app.locals.tmwa.db_pool.getConnection((err, db) => {
-        if (err) {
-            res.status(500).json({
-                status: "error",
-                error: "couldn't reach the database"
-            });
-            console.warn("TMWA.account: a connection with the database couldn't be established");
-            return;
-        }
-
-        const query_params = { // SET
-            "PASSWORD": req.body.password,
-            "STATE": 5,
-        };
-
-        db.query(`UPDATE ${req.app.locals.tmwa.db_tables.register} SET ? WHERE USERNAME = ? AND PASSWORD = ? AND STATE = 4`, [query_params, req.body.username, req.body.code], (err, rows, fields) => {
-            if (err) {
-                res.status(500).json({
-                    status: "error",
-                    error: "couldn't change the password"
-                });
-                console.error("TMWA.account: an unexpected sql error occured: %s", err.code);
-            } else if (rows.affectedRows < 1) {
-                res.status(403).json({
-                    status: "error",
-                    error: "invalid code"
-                });
-                req.app.locals.rate_limiting.add(req.ip);
-                setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 2000);
-                return;
-            } else {
-                res.status(200).json({
-                    status: "success"
-                });
-                console.info("TMWA.account: a password was reset: %s [%s]", query_params.USERNAME, req.ip);
-                req.app.locals.rate_limiting.add(req.ip);
-                setTimeout(() => req.app.locals.rate_limiting.delete(req.ip), 300000);
-            }
-
-            db.release(); // return this connection to the pool
-        });
-    });
+    // actual reset happens here
 };
 
 
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