craigphicks

secure ssh copy to remote server

motivation

From machine A, user-A does an sshinto th eaccount user-B on server B for a terminal session.
In the course of that session, it would be convenient to copy some data to A's clipboard, without using mouse to drag and click. Example use cases:

1. cat files content into local clipboard. C.f., cat | xsel -i -b or cat | xclip -i -selection b

craigphicks

#!/usr/bin/env python3

import argparse
import textwrap
import subprocess
import os
import datetime
#import pdb
#import random
import time

craigphicks

Setting up a pipes between A and B

A to B (setup on A)

From A, set up a pipe for sending data from A to B

a@A: ssh -v -N -L 2223:127.0.0.1:2222 b@B

To test it, first open a listener on B

craigphicks

#!/usr/bin/env python3
'''
Convert  `iptables -S` output to a depth-first tree listing
Reads from standard input
Craig P Hicks 2019
MIT License
'''

import sys

craigphicks

1. downloaded (https://downloads.openwrt.org/snapshots/targets/brcm2708/bcm2710/openwrt-brcm2708-bcm2710-rpi-3-ext4-factory.img.gz) and set up SD card

2. modify /etc/network to set ip address, gateway, dns

config interface 'lan'
	option type 'bridge'
	option ifname 'eth0'

craigphicks

#!/usr/bin/env python2  
#coding=utf-8
#  
# Openwrt Package Grabber  
#  
# Copyright (C) 2014 http://www.shuyz.com
# modified 2019 craigphicks
#     

import urllib2 

craigphicks

#!/bin/bash

# Copyright (c) 2019, Craig P Hicks
# content licensed as CC BY-NC-SA
# CC BY-NC-SA details at https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode

# This program depends upon 'xdotool' installed as  Ubuntu 18.04 managed package
# xdotool project source can be found at:
#    https://github.com/jordansissel/xdotool
#    https://www.semicomplete.com/projects/xdotool/

craigphicks

#!/bin/bash
#
#
#<UDF name="ssuser" Label="Sudo user username?" example="username" />
#<UDF name="sspassword" Label="Sudo user password?" example="strongPassword" />
#<UDF name="sspubkey" Label="SSH pubkey (installed for root and sudo user)?" example="ssh-rsa ..." />


# initial needfuls
apt-get -o Acquire::ForceIPv4=true update

craigphicks

Forwarding X11 over ssh without using xauth

• local -- the local machine serving an Xserver.
• remote -- the remote machine serving the application which drives the data going to the Xserver

Remote /etc/ssh/sshd_config:

X11Forwarding no
X11DisplayOffset 10
X11UseLocalhost yes

craigphicks

x=10;
function test(){
  var x=20;
  var obj = {x:30};
  function logargs(t,arg1,arg2,arg3,arg4) { 
    console.log(`(${t}) this.x=${this.x},x=${x},obj.x=${obj.x},${arg1},${arg2},${arg3},${arg4.x}`); 
  }
  logargs("A",this.x,x,obj.x,obj);
 setTimeout(logargs,0,"B",this.x,x,obj.x,obj);