From 234af0e0321323ab31a9d675a7b4a7214c7d3ad5 Mon Sep 17 00:00:00 2001 From: azures04 Date: Fri, 6 Mar 2026 11:21:23 +0100 Subject: [PATCH] Add logger module, services, and package files Introduce a new logger (modules/logger.js) that prints colorized console output, writes timestamped logs to a file in a logs/ directory, strips ANSI colors for file output, and handles process exit/SIGINT cleanup. Add service stubs (services/security.js, services/storage.js, services/smtp/actions.js, services/smtp/authenticate.js) and a test.js. Add package.json and package-lock.json with runtime deps (colors, dotenv, zod) and dev tooling (eslint, nodemon) to support the new code. --- modules/logger.js | 92 +++ package-lock.json | 1452 +++++++++++++++++++++++++++++++++ package.json | 31 + services/security.js | 44 + services/smtp/actions.js | 208 +++++ services/smtp/authenticate.js | 47 ++ services/storage.js | 65 ++ 7 files changed, 1939 insertions(+) create mode 100644 modules/logger.js create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 services/security.js create mode 100644 services/smtp/actions.js create mode 100644 services/smtp/authenticate.js create mode 100644 services/storage.js diff --git a/modules/logger.js b/modules/logger.js new file mode 100644 index 0000000..0b1b6f7 --- /dev/null +++ b/modules/logger.js @@ -0,0 +1,92 @@ +const fs = require("node:fs") +const path = require("node:path") +require("colors") +require("dotenv").config({ + quiet: true +}) + +function cleanup($stream) { + if (!$stream.destroyed) { + $stream.end() + } +} + +function write($stream, level, color, content, extraLabels = []) { + const date = new Date().toISOString() + const message = typeof content === "string" ? content : JSON.stringify(content, null, 2) + + let consoleLabels = "" + let fileLabels = "" + + if (Array.isArray(extraLabels) && extraLabels.length > 0) { + for (let i = 0; i < extraLabels.length; i += 2) { + const labelName = extraLabels[i] + const labelColor = extraLabels[i + 1] + if (labelName) { + fileLabels += ` [${labelName}]` + if (labelColor && labelName[labelColor]) { + consoleLabels += ` [${labelName[labelColor]}]` + } else { + consoleLabels += ` [${labelName.white}]` + } + } + } + } + + // eslint-disable-next-line no-console + console.log(`[${date}] `.magenta + `[${level}]`[color] + consoleLabels + " " + message) + $stream.write(`[${date}] [${level}]${fileLabels} ${stripColors(message)}\n`) +} + +function createLogger(root) { + // eslint-disable-next-line no-useless-escape + const fileName = isTrueFromDotEnv("IS_PROD") ? new Date().toLocaleString("fr-FR", { timeZone: "UTC" }).replace(/[\/:]/g, "-").replace(/ /g, "_") : "DEV-LOG" + + const logsDir = path.join(root, "logs") + + if (!fs.existsSync(logsDir)) { + fs.mkdirSync(logsDir, { recursive: true }) + } + + const stream = fs.createWriteStream(path.join(logsDir, `${fileName}.log`), { flags: "a" }) + + process.on("exit", () => { + cleanup(stream) + }) + + process.on("SIGINT", () => { + cleanup(stream) + process.exit() + }) + + return { + log: (content, labels) => { + write(stream, "INFO", "green", content, labels) + }, + error: (content, labels) => { + write(stream, "ERROR", "red", content, labels) + }, + warn: (content, labels) => { + write(stream, "WARN", "yellow", content, labels) + }, + debug: (content, labels) => { + write(stream, "DEBUG", "white", content, labels) + } + } +} + +function isTrueFromDotEnv(key) { + return (process.env[key] || "").trim().toLowerCase() === "true" +} + +function stripColors(string) { + if (!string || typeof string !== "string") { + return string + } + // eslint-disable-next-line no-control-regex + return string.replace(/\x1B\[[0-9;]*[mK]/g, "") +} + +const logger = createLogger(process.cwd()) + +module.exports = logger \ No newline at end of file diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..9e11237 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,1452 @@ +{ + "name": "jawab", + "version": "0.0.1-alpha", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "jawab", + "version": "0.0.1-alpha", + "license": "AGPL-3.0-only", + "dependencies": { + "colors": "^1.4.0", + "dotenv": "^17.3.1", + "zod": "^4.3.6" + }, + "devDependencies": { + "@eslint/js": "^9.39.3", + "eslint": "^9.39.3", + "globals": "^17.4.0", + "nodemon": "^3.1.14" + } + }, + "node_modules/@eslint-community/eslint-utils": { + "version": "4.9.1", + "resolved": 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"^1.4.0", + "dotenv": "^17.3.1", + "zod": "^4.3.6" + }, + "devDependencies": { + "@eslint/js": "^9.39.3", + "eslint": "^9.39.3", + "globals": "^17.4.0", + "nodemon": "^3.1.14" + } +} diff --git a/services/security.js b/services/security.js new file mode 100644 index 0000000..9f252b3 --- /dev/null +++ b/services/security.js @@ -0,0 +1,44 @@ +const { z } = require("zod") + +const LIMITS = { + MAX_LINE_LENGTH: 512, + MAX_MAIL_SIZE: 10 * 1024 * 1024, + TIMEOUT_MS: 30000 +} + +function validateEmail(email) { + const schema = z.string().email().max(255) + const result = schema.safeParse(email) + return result.success +} + +function isLineSafe(line) { + if (!line || line.length > LIMITS.MAX_LINE_LENGTH) { + return false + } + + const dangerousPattern = /[\0\b\v\f]/ + return !dangerousPattern.test(line) +} + +function sanitizePath(input) { + return input.replace(/[^a-zA-Z0-9_\-]/g, "") +} + +function createSizeChecker(maxSize = LIMITS.MAX_MAIL_SIZE) { + let currentSize = 0 + return function(chunkLength) { + currentSize += chunkLength + if (currentSize > maxSize) { + return false + } + return true + } +} + +module.exports = { + isLineSafe, + sanitizePath, + validateEmail, + createSizeChecker +} \ No newline at end of file diff --git a/services/smtp/actions.js b/services/smtp/actions.js new file mode 100644 index 0000000..b7ad749 --- /dev/null +++ b/services/smtp/actions.js @@ -0,0 +1,208 @@ +const auth = require("./authenticate") +const storage = require("../storage") +const security = require("../security") + +const codes = { + 220: "Service ready", + 221: "Closing transmission channel", + 235: "2.7.0 Authentication successful", + 250: "Requested mail action okay, completed", + 354: "Start mail input; end with .", + 421: "Service not available, closing transmission channel", + 451: "Requested action aborted: local error in processing", + 500: "Syntax error, command unrecognized", + 501: "Syntax error in parameters or arguments", + 503: "Bad sequence of commands", + 530: "5.7.0 Authentication required", + 535: "5.7.8 Authentication credentials invalid", + 550: "Requested action not taken: mailbox unavailable", + 552: "Requested mail action aborted: exceeded storage allocation" +} + +const features = ["Jawab Mail Server", "AUTH PLAIN", "SIZE 10485760", "HELP"] + +function reply(socket, code, extra = null) { + const message = codes[code] + + if (Array.isArray(extra)) { + for (let i = 0; i < extra.length - 1; i++) { + socket.write(`${code}-${extra[i]}\r\n`); + } + return socket.write(`${code} ${extra[extra.length - 1]}\r\n`) + } + + const responseText = extra ? `${message} ${extra}` : message + return socket.write(`${code} ${responseText}\r\n`) +} + +function handleCommand(socket, session, line) { + if (!security.isLineSafe(line)) { + return reply(socket, 500, "Line too long") + } + + const parts = line.split(" ") + const command = parts[0].toUpperCase() + const args = parts.slice(1).join(" ") + + if (session.isCollectingData) { + return handleDataStreaming(socket, session, line) + } + + switch (command) { + case "EHLO": + case "HELO": + handleHelo(socket, session, args) + break + case "AUTH": + handleAuth(socket, session, args) + break + case "MAIL": + handleMailFrom(socket, session, args) + break + case "RCPT": + handleRcptTo(socket, session, args) + break + case "DATA": + handleDataStart(socket, session) + break + case "RSET": + handleReset(socket, session) + break + case "QUIT": + handleQuit(socket) + break + case "NOOP": + reply(socket, 250) + break + default: + reply(socket, 500) + } +} + +function handleAuth(socket, session, args) { + const [mechanism, payload] = args.split(" ") + + if (mechanism !== "PLAIN" || !payload) { + return reply(socket, 501) + } + + const { identity, secret } = auth.decodeSASL(payload) + + if (auth.authenticate(identity, secret)) { + session.authenticated = true + session.user = identity + return reply(socket, 235) + } else { + return reply(socket, 535) + } +} + +function handleMailFrom(socket, session, args) { + if (!session.authenticated) { + return reply(socket, 530) + } + + const emailMatch = args.match(/FROM:\s*<(.+?)>/i) + if (!emailMatch) { + return reply(socket, 501) + } + + const email = emailMatch[1] + + if (!security.validateEmail(email)) { + return reply(socket, 501) + } + + session.from = email + session.sizeChecker = security.createSizeChecker() + return reply(socket, "250") +} + +function handleRcptTo(socket, session, args) { + if (!session.from) { + return reply(socket, 503) + } + + const emailMatch = args.match(/TO:\s*<(.+?)>/i) + if (!emailMatch) { + return reply(socket, 501) + } + + const email = emailMatch[1] + + if (!security.validateEmail(email)) { + return reply(socket, 501) + } + + session.to = email + return reply(socket, "250") +} + +function handleDataStart(socket, session) { + if (!session.from || !session.to) return reply(socket, 503) + + const { writeStream } = storage.createMailWriteStream() + + session.isCollectingData = true + session.currentWriteStream = writeStream + + return reply(socket, 354) +} + +function handleDataStart(socket, session) { + if (!session.from || !session.to) return reply(socket, 503) + + const { writeStream } = storage.createMailWriteStream() + session.currentWriteStream = writeStream + session.sizeChecker = security.createSizeChecker() + session.isCollectingData = true + + return reply(socket, 354) +} + +function handleDataStreaming(socket, session, line) { + if (line.trim() === ".") { + session.isCollectingData = false + session.currentWriteStream.end() + session.currentWriteStream = null + return reply(socket, 250) + } + + if (session.sizeChecker && !session.sizeChecker(line.length)) { + session.isCollectingData = false + session.currentWriteStream.destroy() + return reply(socket, 552) + } + + return session.currentWriteStream.write(line + "\n") +} + +function handleReset(socket, session) { + if (session.currentWriteStream) { + session.currentWriteStream.destroy() + } + session.from = null + session.to = null + session.isCollectingData = false + return reply(socket, 250) +} + +function handleQuit(socket) { + reply(socket, 221) + return socket.end() +} + +function handleHelo(socket, session, args) { + if (!args) { + return reply(socket, 501) + } + + session.helo = args + session.hasHelo = true + + return reply(socket, 250, features) +} + +module.exports = { + handleCommand +} \ No newline at end of file diff --git a/services/smtp/authenticate.js b/services/smtp/authenticate.js new file mode 100644 index 0000000..a991e02 --- /dev/null +++ b/services/smtp/authenticate.js @@ -0,0 +1,47 @@ +const crypto = require("node:crypto") + +function decodeSASL(base64Payload) { + try { + const buffer = Buffer.from(base64Payload, "base64") + const parts = []; + let lastPos = 0; + + for (let i = 0; i < buffer.length; i++) { + if (buffer[i] === 0) { + parts.push(buffer.slice(lastPos, i).toString("utf8")) + lastPos = i + 1 + } + } + parts.push(buffer.slice(lastPos).toString("utf8")) + + return { user: parts[1], pass: parts[2] } + } catch (e) { + return null + } +} + +function safeCompare(input, actual) { + if (!input || !actual || input.length !== actual.length) { + return false + } + return crypto.timingSafeEqual(Buffer.from(input), Buffer.from(actual)) +} + +function authenticate(identity, secret, type = "PASSWORD") { + const mockUser = { + username: "azures", + password: "Password123@", + token: "tanit_tk_998877" + }; + + if (type === "TOKEN") { + return safeCompare(secret, mockUser.token) + } + + return safeCompare(identity, mockUser.username) && safeCompare(secret, mockUser.password) +} + +module.exports = { + decodeSASL, + authenticate +} \ No newline at end of file diff --git a/services/storage.js b/services/storage.js new file mode 100644 index 0000000..d4b59aa --- /dev/null +++ b/services/storage.js @@ -0,0 +1,65 @@ +const fs = require("node:fs"); +const fsPromises = require("node:fs/promises"); +const path = require("node:path"); +const logger = require("../modules/logger"); + +const BASE_PATH = path.resolve(process.env.MAIL_STORAGE || process.cwd(), "storage") + +function initialize() { + const directories = ["", "new", "cur", "tmp"] + for (const dir of directories) { + const fullPath = path.join(BASE_PATH, dir) + if (!fs.existsSync(fullPath)) { + fs.mkdirSync(fullPath, { recursive: true }) + } + } + logger.log("Directories initialized", ["StorageService", "cyan"]) +} + +function createMailWriteStream() { + const fileName = `${Date.now()}.${process.pid}.jawab` + const tempPath = path.join(BASE_PATH, "tmp", fileName) + const finalPath = path.join(BASE_PATH, "new", fileName) + + const writeStream = fs.createWriteStream(tempPath) + + writeStream.on("finish", async () => { + try { + await fsPromises.rename(tempPath, finalPath) + } catch (err) { + logger.log(`Rename failed: ${err.message}`, ["StorageService", "cyan"]); + } + }) + + return { writeStream, fileName } +} + +async function listNewMails() { + try { + const files = await fsPromises.readdir(path.join(BASE_PATH, "new")) + return files.map(file => ({ + id: file, + path: path.join(BASE_PATH, "new", file), + status: "new" + })) + } catch (err) { + return [] + } +} + +async function getMailContent(fileName, folder = "new") { + const fullPath = path.join(BASE_PATH, folder, fileName); + try { + await fsPromises.access(fullPath, fs.constants.R_OK) + return fs.createReadStream(fullPath) + } catch { + return null + } +} + +module.exports = { + initialize, + listNewMails, + getMailContent, + createMailWriteStream +} \ No newline at end of file