From 6a3849dbdccc4cc94560b75d5efeaaded091c190 Mon Sep 17 00:00:00 2001
From: Bryan Ashby <bryan@l33t.codes>
Date: Sun, 15 Jul 2018 19:18:27 -0600
Subject: [PATCH] Fist version of ArchaicNET support module

---
 core/archaicnet.js | 129 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 core/archaicnet.js

diff --git a/core/archaicnet.js b/core/archaicnet.js
new file mode 100644
index 00000000..bc3528d6
--- /dev/null
+++ b/core/archaicnet.js
@@ -0,0 +1,129 @@
+/* jslint node: true */
+'use strict';
+
+//  enigma-bbs
+const { MenuModule }    = require('../core/menu_module.js');
+const { resetScreen }   = require('../core/ansi_term.js');
+const { Errors }        = require('../core/enig_error.js');
+
+//  deps
+const async         = require('async');
+const _             = require('lodash');
+const SSHClient     = require('ssh2').Client;
+
+exports.moduleInfo = {
+    name    : 'ArchaicNET',
+    desc    : 'ArchaicNET Access Module',
+    author  : 'NuSkooler',
+};
+
+exports.getModule = class ArchaicNETModule extends MenuModule {
+    constructor(options) {
+        super(options);
+
+        //  establish defaults
+        this.config             = options.menuConfig.config;
+        this.config.host        = this.config.host || 'bbs.archaicbinary.net';
+        this.config.sshPort     = this.config.sshPort || 8513;
+        this.config.rloginPort  = this.config.rloginPort || 2222;
+    }
+
+    initSequence() {
+        let clientTerminated;
+        const self = this;
+
+        async.series(
+            [
+                function validateConfig(callback) {
+                    const reqConfs = [ 'username', 'password', 'bbsTag' ];
+                    for(let req of reqConfs) {
+                        if(!_.isString(_.get(self, [ 'config', req ]))) {
+                            return callback(Errors.MissingConfig(`Config requires "${req}"`));
+                        }
+                    }
+                    return callback(null);
+                },
+                function establishSecureConnection(callback) {
+                    self.client.term.write(resetScreen());
+                    self.client.term.write('Connecting to ArchaicNET, please wait...\n');
+
+                    const sshClient = new SSHClient();
+
+                    let pipeRestored = false;
+                    let pipedStream;
+                    const restorePipe = function() {
+                        if(pipedStream && !pipeRestored && !clientTerminated) {
+                            self.client.term.output.unpipe(pipedStream);
+                            self.client.term.output.resume();
+                        }
+                    };
+
+                    sshClient.on('ready', () => {
+                        //  track client termination so we can clean up early
+                        self.client.once('end', () => {
+                            self.client.log.info('Connection ended. Terminating ArchaicNET connection');
+                            clientTerminated = true;
+                            return sshClient.end();
+                        });
+
+                        //  establish tunnel for rlogin
+                        const fwdPort = self.config.rloginPort + self.client.node;
+                        sshClient.forwardOut('127.0.0.1', fwdPort, self.config.host,  self.config.rloginPort, (err, stream) => {
+                            if(err) {
+                                return sshClient.end();
+                            }
+
+                            //
+                            //  Send rlogin - [<bbsTag>]<userName> e.g. [Xibalba]NuSkooler
+                            //
+                            const rlogin = `\x00${self.client.user.username}\x00[${self.config.bbsTag}]${self.client.user.username}\x00${self.client.term.termType}\x00`;
+                            stream.write(rlogin);
+
+                            pipedStream = stream;
+                            self.client.term.output.pipe(stream);
+
+                            stream.on('data', d => {
+                                return self.client.term.rawWrite(d);
+                            });
+
+                            stream.on('close', () => {
+                                restorePipe();
+                                return sshClient.end();
+                            });
+                        });
+                    });
+
+                    sshClient.on('error', err => {
+                        return self.client.log.info(`ArchaicNET SSH client error: ${err.message}`);
+                    });
+
+                    sshClient.on('close', hadError => {
+                        if(hadError) {
+                            self.client.warn('Closing ArchaicNET SSH due to error');
+                        }
+                        restorePipe();
+                        return callback(null);
+                    });
+
+                    sshClient.connect( {
+                        host        : self.config.host,
+                        port        : self.config.sshPort,
+                        username    : self.config.username,
+                        password    : self.config.password,
+                    });
+                }
+            ],
+            err => {
+                if(err) {
+                    self.client.log.warn( { error : err.message }, 'ArchaicNET error');
+                }
+
+                //  if the client is stil here, go to previous
+                if(!clientTerminated) {
+                    self.prevMenu();
+                }
+            }
+        );
+    }
+};
+