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IMAP Support #17
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IMAP Support #17
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| /// <reference types="node" resolution-mode="require"/> | ||
| import net from "net"; | ||
| export default class IMAPServer { | ||
| server: net.Server; | ||
| constructor(port: number); | ||
| connection(sock: net.Socket): void; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| import net from "net"; | ||
| import { createHash } from "node:crypto"; | ||
| import User from "../models/User.js"; | ||
| import Logger from "../Logger.js"; | ||
| import getConfig from "../config.js"; | ||
| const logger = new Logger("IMAP", "TEAL"); | ||
| export default class IMAPServer { | ||
| server; | ||
| constructor(port) { | ||
| this.server = net.createServer(); | ||
| this.server.listen(port, () => { | ||
| logger.log("Server listening on port " + port); | ||
| }); | ||
| this.server.on("connection", this.connection); | ||
| } | ||
| connection(sock) { | ||
| logger.log("Client connected"); | ||
| sock.write("* OK IMAP4rev1 Service Ready\r\n"); | ||
| let user; | ||
| sock.on("data", async (data) => { | ||
| const msg = data.toString().trim(); | ||
| logger.log("Received data: " + msg); | ||
| const tag = msg.split(" ")[0]; | ||
| const rest = msg.split(" ").slice(1).join(" "); | ||
| const cmd = rest.split(" ")[0].toLowerCase(); | ||
| const args = (rest.match(/(".*?"|[^"\s]+)+(?=\s*|\s*$)/g) || []).filter(Boolean).splice(1); | ||
| logger.debug("Tag: " + tag); | ||
| logger.debug("Command: " + cmd); | ||
| logger.debug("Arguments: " + args.join(" ")); | ||
| if (cmd === "login") { | ||
| let username = args[0].trim().toLowerCase(); | ||
| if (username.includes("@")) { | ||
| if (!username.endsWith("@" + getConfig("host", "localhost"))) { | ||
| return void sock.write(tag + " NO Invalid username or password\r\n"); | ||
| } | ||
| username = username.substring(0, username.lastIndexOf("@")); | ||
| } | ||
| if (username.startsWith("\"") && username.endsWith("\"")) { | ||
| username = username.substring(1, username.length - 1); | ||
| } | ||
| else if (username.includes("@")) { | ||
| return void sock.write(tag + " NO Invalid username or password\r\n"); | ||
| } | ||
| let _user = await User.findOne({ where: { username: username } }); | ||
| if (!_user) | ||
| return void sock.write(tag + " NO Invalid username or password\r\n"); | ||
| user = _user; | ||
| let password = args[1]; | ||
| const hash = createHash("sha256"); | ||
| hash.update(password); | ||
| const hashedPassword = hash.digest("hex"); | ||
| if (user.password != hashedPassword) { | ||
| return void sock.write(tag + " NO Invalid username or password\r\n"); | ||
| } | ||
| sock.write(tag + " OK Logged in\r\n"); | ||
| } | ||
| else if (cmd === "select") { | ||
| const mailbox = args[0]; | ||
| if (mailbox == "INBOX") { | ||
| sock.write("* 18 EXISTS\r\n"); | ||
| sock.write("* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)\r\n"); | ||
| sock.write("* 2 RECENT\r\n"); | ||
| sock.write("* OK [UNSEEN 1] Message 1 is the first unseen message\r\n"); | ||
| sock.write("* OK [UIDVALIDITY 1] UIDs valid\r\n"); | ||
| sock.write(tag + " OK [READ-WRITE] SELECT completed\r\n"); | ||
| } | ||
| else { | ||
| sock.write(tag + " NO [NONEXISTENT] SELECT failed\r\n"); | ||
| } | ||
| } | ||
| else if (cmd === "fetch") { | ||
| // fetch 1 body[...] | ||
| const id = args[0]; // 1 | ||
| const body = args[1]; // body[...] | ||
| const mails = await user.$get("mails"); | ||
| const mail = mails[parseInt(id) - 1]; | ||
| if (!mail) | ||
| return void sock.write(tag + " NO [NONEXISTENT] FETCH failed\r\n"); | ||
| if (body == "body[]") { | ||
| sock.write("* 1 FETCH (BODY[] {" + mail.content.length + "}\r\n"); | ||
| sock.write(mail.content + ")\r\n"); | ||
| sock.write(tag + " OK FETCH completed\r\n"); | ||
| } | ||
| } | ||
| else if (cmd === "logout") { | ||
| sock.write("* BYE IMAP4rev1 Server logging out\r\n"); | ||
| sock.write(tag + " OK LOGOUT completed\r\n"); | ||
| sock.end(); | ||
| } | ||
| else if (cmd === "capability") { | ||
| sock.write("* CAPABILITY IMAP4rev1\r\n"); | ||
| sock.write(tag + " OK CAPABILITY completed\r\n"); | ||
| } | ||
| else if (cmd === "list") { | ||
| sock.write("* LIST (\\HasNoChildren) \"/\" \"INBOX\"\r\n"); | ||
| sock.write(tag + " OK LIST completed\r\n"); | ||
| } | ||
| else if (cmd === "noop") { | ||
| sock.write(tag + " OK NOOP completed\r\n"); | ||
| } | ||
| else if (cmd === "uid") { | ||
| sock.write(tag + " OK UID completed\r\n"); | ||
| } | ||
| }); | ||
| sock.addListener("close", () => { | ||
| logger.log("Client disconnected"); | ||
| }); | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| import net from "net" | ||
| import { readdirSync, readFileSync } from "fs" | ||
| import { createHash } from "node:crypto" | ||
| import User from "../models/User.js" | ||
| import Logger from "../Logger.js" | ||
| import getConfig from "../config.js" | ||
|
|
||
| const logger = new Logger("IMAP", "TEAL") | ||
|
|
||
| export default class IMAPServer { | ||
|
|
||
| server: net.Server | ||
|
|
||
| constructor(port: number) { | ||
| this.server = net.createServer() | ||
| this.server.listen(port, () => { | ||
| logger.log("Server listening on port " + port) | ||
| }) | ||
| this.server.on("connection", this.connection) | ||
| } | ||
|
|
||
| connection(sock: net.Socket) { | ||
| logger.log("Client connected") | ||
| sock.write("* OK IMAP4rev1 Service Ready\r\n") | ||
| let user: User; | ||
| sock.on("data", async (data: Buffer) => { | ||
| const msg = data.toString().trim() | ||
| logger.log("Received data: " + msg) | ||
| const tag = msg.split(" ")[0] | ||
| const rest = msg.split(" ").slice(1).join(" ") | ||
| const cmd = rest.split(" ")[0].toLowerCase() | ||
| const args = (rest.match(/(".*?"|[^"\s]+)+(?=\s*|\s*$)/g) || []).filter(Boolean).splice(1); | ||
| logger.debug("Tag: " + tag) | ||
| logger.debug("Command: " + cmd) | ||
| logger.debug("Arguments: " + args.join(" ")) | ||
| if(cmd === "login") { | ||
| let username = args[0].trim().toLowerCase() | ||
| if(username.includes("@")) { | ||
| if(!username.endsWith("@" + getConfig("host", "localhost"))) { | ||
| return void sock.write(tag + " NO Invalid username or password\r\n") | ||
| } | ||
| username = username.substring(0, username.lastIndexOf("@")) | ||
| } | ||
| if (username.startsWith("\"") && username.endsWith("\"")) { | ||
| username = username.substring(1, username.length-1) | ||
| } else if (username.includes("@")) { | ||
| return void sock.write(tag + " NO Invalid username or password\r\n") | ||
| } | ||
| let _user = await User.findOne({ where: { username: username } }) | ||
| if(!_user) return void sock.write(tag + " NO Invalid username or password\r\n") | ||
| user = _user | ||
|
|
||
| let password = args[1] | ||
| const hash = createHash("sha256") | ||
| hash.update(password) | ||
|
Check failure Code scanning / CodeQL Use of password hash with insufficient computational effort
Password from [an access to password](1) is hashed insecurely.
|
||
| const hashedPassword = hash.digest("hex") | ||
| if(user.password != hashedPassword) { | ||
| return void sock.write(tag + " NO Invalid username or password\r\n") | ||
| } | ||
| sock.write(tag + " OK Logged in\r\n") | ||
| } else if(cmd === "select") { | ||
| const mailbox = args[0] | ||
| if(mailbox == "INBOX") { | ||
| sock.write("* 18 EXISTS\r\n"); | ||
| sock.write("* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)\r\n"); | ||
| sock.write("* 2 RECENT\r\n"); | ||
| sock.write("* OK [UNSEEN 1] Message 1 is the first unseen message\r\n"); | ||
| sock.write("* OK [UIDVALIDITY 1] UIDs valid\r\n"); | ||
| sock.write(tag + " OK [READ-WRITE] SELECT completed\r\n"); | ||
| } else { | ||
| sock.write(tag + " NO [NONEXISTENT] SELECT failed\r\n") | ||
| } | ||
| } else if(cmd === "fetch") { | ||
| // fetch 1 body[...] | ||
| const id = args[0] // 1 | ||
| const body = args[1] // body[...] | ||
| const mails = await user.$get("mails") | ||
| const mail = mails[parseInt(id) - 1] | ||
| if(!mail) return void sock.write(tag + " NO [NONEXISTENT] FETCH failed\r\n") | ||
| if(body == "body[]") { | ||
| sock.write("* 1 FETCH (BODY[] {" + mail.content.length + "}\r\n") | ||
| sock.write(mail.content + ")\r\n") | ||
| sock.write(tag + " OK FETCH completed\r\n") | ||
| } | ||
| } else if(cmd === "logout") { | ||
| sock.write("* BYE IMAP4rev1 Server logging out\r\n") | ||
| sock.write(tag + " OK LOGOUT completed\r\n") | ||
| sock.end() | ||
| } else if(cmd === "capability") { | ||
| sock.write("* CAPABILITY IMAP4rev1\r\n") | ||
| sock.write(tag + " OK CAPABILITY completed\r\n") | ||
| } else if(cmd === "list") { | ||
| sock.write("* LIST (\\HasNoChildren) \"/\" \"INBOX\"\r\n") | ||
| sock.write(tag + " OK LIST completed\r\n") | ||
| } else if(cmd === "noop") { | ||
| sock.write(tag + " OK NOOP completed\r\n") | ||
| } else if(cmd === "uid") { | ||
| sock.write(tag + " OK UID completed\r\n") | ||
| } | ||
| }) | ||
| sock.addListener("close", () => { | ||
| logger.log("Client disconnected") | ||
| }) | ||
| } | ||
|
|
||
| } | ||
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Check failure
Code scanning / CodeQL
Use of password hash with insufficient computational effort