tcely

Keybase proof

I hereby claim:

• I am tcely on github.
• I am tcely (https://keybase.io/tcely) on keybase.
• I have a public key ASCepDrTFuNbJ51KamisH6cg9iNJN90f5vFYyIQYJ4nTWgo

To claim this, I am signing this object:

tcely

#!/bin/bash

# *Temporarily* force Bash into POSIX compatibility mode, where `unset` cannot 
# be shadowed, which allows us to undefine any `unset` *function* as well
# as other functions that may shadow crucial commands.
# Note: Fortunately, POSIXLY_CORRECT= works even without `export`, because
#       use of `export` is not safe at this point.
#       By contrast, a simple assignment cannot be tampered with.
POSIXLY_CORRECT=

tcely

#!/bin/sh

docker run --rm -it perl:5-threaded \
  perl -e 'print(q{Enter pass phrase: }); system("stty -echo"); chomp($pt = <>); system("stty echo"); print(qq{\n}, crypt($pt, q{$1$YCCaQNAP$}), qq{\n});'

tcely

#!/bin/sh

iptables -F SSH_PORT_LIMIT || iptables -N SSH_PORT_LIMIT

iptables -A SSH_PORT_LIMIT -p tcp -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A SSH_PORT_LIMIT -p tcp -m state --state NEW -m hashlimit --hashlimit-mode srcip --hashlimit-upto 10/hour --hashlimit-burst 15 --hashlimit-name ssh -j ACCEPT
iptables -A SSH_PORT_LIMIT -j LOG --log-level info --log-prefix 'ssh-port-limit: '
iptables -A SSH_PORT_LIMIT -p tcp -j REJECT --reject-with tcp-reset
iptables -A SSH_PORT_LIMIT -j DROP

tcely

#!/usr/bin/env python

import io, os, sys

from argparse import ArgumentParser
from calendar import timegm
from time import gmtime, localtime, mktime, strftime, strptime

def touchUTCString(t):
    return timegm(strptime(t, '%a, %d %b %Y %H:%M:%S %Z'))

tcely

if [ -s ~/.bashrc ]; then
    . ~/.bashrc
fi

# Additions to fix the lack of confirmation when keys are added from the Keychain
if [ -s ~/.ssh/ssh-agent.pid ]; then
    . ~/.ssh/ssh-agent.pid
    if [ -n "$SSH_AGENT_PID" ] && ! kill -0 "$SSH_AGENT_PID" &>/dev/null; then
        rm -f ~/.ssh/ssh-agent.pid
        unset -v SSH_AGENT_PID

tcely

#!/bin/bash
# Inspiration from: http://askubuntu.com/questions/126817/how-to-disable-alt-f1-alt-f2-shortcuts

unset -v _key _value _schema
_schema='org.gnome.desktop.wm.keybindings'

while IFS= read -r _key; do
    _value="$(gsettings get "$_schema" "$_key")"
    while [[ "$_value" =~ \''<Alt>F'[1-9]\' ]] || [[ "$_value" =~ \''<Alt>F1'[0-2]\' ]]; do
        #_value="$(sed -e "s/\(, \)\?${BASH_REMATCH[0]}\(, \)\?//;s/''/', '/;" <<<"$_value")"

tcely

#!/bin/bash
sha256sumc () 
{ 
    local err file hash out rc=0;
    while IFS=' ' read -r hash file; do
        file="${file#[*]}";
        out="$(openssl dgst -sha256 -r "$file" 2>/dev/null)" && cmp -s <(echo "$out") <(printf -- '%s *%s\n' "$hash" "$file") && printf -- '%s: OK\n' "$file" || { 
            printf -- '%s: FAILED' "$file";
            err="$(openssl dgst -sha256 -r "$file" 2>&1 >/dev/null)";
            if [[ "$err" =~ ': No such file or directory'$'\n' ]]; then

tcely

#!/bin/bash
host="${1:-127.0.0.1}"
port="${2:-443}"

ciphers='ALL:!eNULL'
printf 'Using openssl at: '
command -v openssl
openssl version -a
printf '\nCiphers selected by server at %s using TCP port %s:\n' "$host" "$port"
while : ; do

tcely

#!/bin/bash
#
hextostr() {
	local i _hs="$*"
	local _hsl="${#_hs}"
	printf '%s\n' "$(for ((i=0; i < _hsl; i+=2)); do echo -ne "\x${_hs:i:2}"; done)"
	unset -v _hsl _hs i
}

#hextostr '48656C6C6F20776F726C6421'