orleika/ychat

## ychat
#!/bin/bash
#
# ychat
# simple multicast chat tools on the shell (only supported bash)
# copyrights: koki yasuda aka orleika <admin@orleika.io>
# Licensed under MIT
#
# Usage:
#   ychat
#

##############################################################################
# Strict mode
##############################################################################

set -o nounset
set -o errexit
trap 'echo "Aborting due to errexit on line $LINENO. Exit code: $?" >&2' ERR
set -o errtrace
set -o pipefail
IFS=$'
	'

###############################################################################
# Environment
###############################################################################

_ME=$(basename "${0}")

###############################################################################
# Help
###############################################################################

_print_logo() {
  tput clear
  echo -e "\e[1;31m
  ##    ##  ######  ##     ##    ###    ########
   ##  ##  ##    ## ##     ##   ## ##      ##
    ####   ##       ##     ##  ##   ##     ##
     ##    ##       ######### ##     ##    ##
     ##    ##       ##     ## #########    ##
     ##    ##    ## ##     ## ##     ##    ##
     ##     ######  ##     ## ##     ##    ##    \e[m
  "
}

_print_help() {
  _print_logo

  echo -e "
Usage:
  NAME=[your name] PORT=[udp port] ${_ME} [OPTION]...

Options:
  -h, --help  Show this screen."
}

###############################################################################
# Program Functions
###############################################################################

sender=$(mktemp "/tmp/${0##*/}.tmp.XXXXXX")
receiver=$(mktemp "/tmp/${0##*/}.tmp.XXXXXX")
log=$(mktemp "/tmp/${0##*/}.tmp.XXXXXX")

atexit() {
  [[ -n ${sender-} ]] && rm -f "$sender"
  [[ -n ${receiver-} ]] && { pkill "${0##*/}"; rm -f "$receiver"; }
  [[ -n ${log-} ]] && rm -f "$log"
}
trap atexit EXIT
trap 'trap - EXIT; atexit; exit -1' INT PIPE TERM

_sender() {
  port=$1
  message=$2

  base64 -d <<EOF | gzip -d > "$sender"
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rWCJJCgaAAA=
EOF

  chmod +x "$sender"
  echo "$message" | "$sender" "$port"
}

_receiver() {
  port=$1

  base64 -d <<EOF | gzip -d > "$receiver"
H4sICGYW4FoAA3JlY2VpdmVyAO1YX2xbVxk/tuPESUvidkWENtALcyB9yI3jZplXGrhpG3ozrLZr
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EOF

  chmod +x "$receiver"
  "$receiver" "$port" >> "$log" &
}

_ychat() {
  name=$1
  port=$2

  _print_logo

  _receiver "$port"

  while :
  do
    echo -en "\nsay: "; IFS="" read -r message
    date=$(date '+%H:%M:%S')
    if [[ -n "$message" ]]
    then
      _sender "$port" "$name ($date)> $message"
    fi
    _print_logo
    tail -n15 "$log"
  done
}

###############################################################################
# Main
###############################################################################

ip="[$(hostname -i)]"
name=${NAME:-"$ip"}
port=${PORT:-8900}

_main() {
  if [[ "${1:-}" =~ ^-h|--help$ ]]
  then
    _print_help
  else
    _ychat "$name" "$port"
  fi
}

_main "$@"
	#!/bin/bash
	#
	# ychat
	# simple multicast chat tools on the shell (only supported bash)
	# copyrights: koki yasuda aka orleika <admin@orleika.io>
	# Licensed under MIT
	#
	# Usage:
	# ychat
	#

	##############################################################################
	# Strict mode
	##############################################################################

	set -o nounset
	set -o errexit
	trap 'echo "Aborting due to errexit on line $LINENO. Exit code: $?" >&2' ERR
	set -o errtrace
	set -o pipefail
	IFS=$'
	'

	###############################################################################
	# Environment
	###############################################################################

	_ME=$(basename "${0}")

	###############################################################################
	# Help
	###############################################################################

	_print_logo() {
	tput clear
	echo -e "\e[1;31m
	## ## ###### ## ## ### ########
	## ## ## ## ## ## ## ## ##
	#### ## ## ## ## ## ##
	## ## ######### ## ## ##
	## ## ## ## ######### ##
	## ## ## ## ## ## ## ##
	## ###### ## ## ## ## ## \e[m
	"
	}

	_print_help() {
	_print_logo

	echo -e "
	Usage:
	NAME=[your name] PORT=[udp port] ${_ME} [OPTION]...

	Options:
	-h, --help Show this screen."
	}

	###############################################################################
	# Program Functions
	###############################################################################

	sender=$(mktemp "/tmp/${0##*/}.tmp.XXXXXX")
	receiver=$(mktemp "/tmp/${0##*/}.tmp.XXXXXX")
	log=$(mktemp "/tmp/${0##*/}.tmp.XXXXXX")

	atexit() {
	[[ -n ${sender-} ]] && rm -f "$sender"
	[[ -n ${receiver-} ]] && { pkill "${0##*/}"; rm -f "$receiver"; }
	[[ -n ${log-} ]] && rm -f "$log"
	}
	trap atexit EXIT
	trap 'trap - EXIT; atexit; exit -1' INT PIPE TERM

	_sender() {
	port=$1
	message=$2

	base64 -d <<EOF \| gzip -d > "$sender"
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	uk415C9IfD/x/Z+T/7LEV4iv+Lf3l/GrzOk7zt86R3fwvDD/RT7P6w0pPj8vXOz47PhcX5X4fN9Q
	IX76HvxliR+kc7ogHcrK/S3jVSqL8/m55mHia1IF5P54i+L3SXbOf1qyu7bRHvZpeZH47zbgc/kP
	rWCJJCgaAAA=
	EOF

	chmod +x "$sender"
	echo "$message" \| "$sender" "$port"
	}

	_receiver() {
	port=$1

	base64 -d <<EOF \| gzip -d > "$receiver"
	H4sICGYW4FoAA3JlY2VpdmVyAO1YX2xbVxk/tuPESUvidkWENtALcyB9yI3jZplXGrhpG3ozrLZr
	VpjYqOPEduLVscP1zZR2E3SEoV7cbn7ggT+CTbywB2B9AZVOalxlEOWlChXSIoGmaqLSNemgaFMV
	YJ35vnu/kxyfxWPigRf6Wdff/f3u9zvn3PP/nm8Oxb7o9XgYNy/7PEMUbNIcrBE/e996CHBRFoD/
	XWwnawTsF+I0ptX4MiXNfYDifHA1uBlSxlqN7yCae4/g/Uw0rcY3bGE1njFlXYdlZUGig6M1fj+V
	42xLrc5Lui7SdVE89yUqWEl6vwa6OijdDv5e5JWaXKguwI7dNJN4n6VyZFu0Gh+iuJCkewR0jezD
	Gy9nTzYz1t/Xk012ZzO5mdnu2Wh/d3+fWsirESdtfG18tcNHTjjxvD62kx7bsQ2uVriwyFtYrfHm
	xbT8lJaP0miGq4nKshWuj3xAebuFPEWbrsNjPsomfFed+Ifr8E/V4Ufr8Kfq8Dvr8H11+KE6/FG4
	trF2pm0fdTBvx0/Vif9yHZ7F4xNT+Vy8YCYMMx5n0A3GsdX7WSE/fiplsnQ6O1OYZKnZjMmmjUzO
	TIMkZRi5fDybH0+YmXyOjWVySWakEklWMJP5GZNlcikznkgmDVZImZhQftpkCTOfYePZfCEFKWA+
	lOlUIpNjh2PDBw7GI2pEfYBhb/HS//t/rnngh32SD+OZnZlmVJwjfGmbWy/Yv3zC6/L6wj64VeBX
	KL6JbcwxaDcE3ivwtsA3CPxtgRfnpzWBrxmf2zf4JoEOCHxA4IMC3yzw7QLfIvCKwItjskvgxfEW
	FvhWgdfnbgXs+6Bm7J/i3499SL0WWKg+8N0tCqt2nof/tt0a3CGeREnlRhWs81uIsUoryw4+gxir
	slJ2sIEYm6hy0cFPIsYqrbzk4DHEWJWVkoO/ihirsHLWwccRY3Er0w5+GDFWWWXUwQcQY1VVjjl4
	H2Ksoorm4AhirJpKGCB/3963hq3fn9StN/W5P98+9ujwYjncrDF98armuMV3YF20j4LgnVIJ60Yv
	+r/eojD9ubLprS47VVMS7YRu3RzBwLMDKxDHZr70ajssHSC7jrJnV4OIrv7Lp8+tevSHVgqhdNvu
	Q1jJZY9u+X8BQdUdvw26khdR8tCK8ebv/EW49WB2jy8tpNNptW33t6m9BvQA5IP5mtsvORSULTCv
	QBJL1RtLULwR3Xp7HlviCv71Xrdfea9afa5s+eOQaNu5W0C2faXcts3/BcDpRX8/OC/k/3TAnoHI
	9NVyIG35Q8Au+jvwpcCKA5+Guyuj0I0u49i0n3bSbDv3MoD5KKxetgWM5a82o+wfzVy2Cne9dy7f
	D+A3JqgHL2Eb2u/eRfnp3fb9oCoG5g9ACqun5ifBXTkLYb1l24IQvThwBhKwP4FRAy/CrfP0Mo4d
	+/sYAIks2W/AXTE8/xioQXgM0YCBuhNwO4+d1H4c7uxf33Uy63LirGv2ZxD7dYi0FlevY3u+jbUt
	1reVDa3ErGTohn6h+5VGhcUudL6MDng7Zpmh2zHrmdCabj0Rgt5xKxrbc3PQujts3dGv3vUNW6/b
	P3oXC/mW2dH7RxxHMeufMevOIetvg9Udf9LnFqBPrBp/0YtPhKCrZUPBWDEZao/BnRIrmqGuWPGZ
	UBi6QXRB7m/QXRQohz63VjU//ipuc6hfrQagnxZ9+GDm79SD3L5sH8UKwy6Mc6E46zFnqldg+s8b
	+5TOZAuLRPrUMPx6hZlefI6rgog7C5DmLt/nsNlx0J+DrPaDfw0a7lHwfwCfBb+D8vOcOc48s0HP
	rq1NAdxbIY97wUOgi2KDDbYG57wuj2voJOjFEuP+KAbXKHY6JB457/9OY7xVm2t6wfu870KD97FW
	cX69Z/fsnt2z/zerktXD3PjemO+7+R5aadQcz/eSAfpO5Xtjzetivide87mY74VL9JzvXb9Hnu9Z
	28l/VCoP39uXaX/N536FCsrXEb63/hgX+rUafrnBxXwtCJPne2yePywjefQXKb5KmNfLbcLn6fn/
	yvg5hGxHqF1Oks+R/wb558n/hPwvyV8hf438G+T/Sv498miHDx7cp3QdPnJij9Kn9qkPKpFwbyS8
	t3ev0nU8lVT0hOny3b3RPfABmMhNKE+ljAJ8OSp7gY8oXWZiotBzfCg2NDgyFN/b15PMm5HudCaX
	yO5hTC1MFkzDTIwxFT4/U8Y0U3N5M6UOHhjuBiFTJxPwgaomT+cKp6dcbxpMncjNqJRNDYjDMyOV
	TWAg3U1nTUwbvnBVMzUL/5B1Bp7lkwkzwdTUZDxtJKZS8Un4oF1HTB0380YBMnTdk+OGk3liKjMO
	GeZN589N201nrABh4/mpqVTO/O9butZwfGDfW9/zeKld+HmTFO+RMB7nid+2G+dTLlak+AYJ43mD
	X9BrpNeIOCbpAhL+LL0D1/N5oETEJBWYnxlxPR+PPcydA7iezytrNDHweYSb/P4PMncMcz0ft+ep
	gJ+UyuuVPGylnTmBYz4vXCSBwjYvP7cRSpvr+Ty0THo+D8n1x9//a5Kez2t8ouXzIMZs2UQ/wYQz
	UbYxjyuNtXHc5PYfk/RR0keJWK6j5+vHlKTn581BmpjXaj8/1nXcCpKerzsBWkhapXi5/KdZ7fhp
	J3076UekeLn9npX0G+e0Lg5J8XL+L0j6EulLpJcnCjn/H7CNs1TH1s+za1xd/UuSPkj64IfU/0zS
	K6RXgpvHy/jnrPaMbuNc3cUlYfyLel6uX0n583O/S9s+OH/uL0t6vo8ok372P+gXJH2Uzs+idNgq
	t7eMlygtrufnk/tJr0kvILfHNco/LPFcf1LiPZt4H3u//ZD0r9fRc/s3tMkidDgaAAA=
	EOF

	chmod +x "$receiver"
	"$receiver" "$port" >> "$log" &
	}

	_ychat() {
	name=$1
	port=$2

	_print_logo

	_receiver "$port"

	while :
	do
	echo -en "\nsay: "; IFS="" read -r message
	date=$(date '+%H:%M:%S')
	if [[ -n "$message" ]]
	then
	_sender "$port" "$name ($date)> $message"
	fi
	_print_logo
	tail -n15 "$log"
	done
	}

	###############################################################################
	# Main
	###############################################################################

	ip="[$(hostname -i)]"
	name=${NAME:-"$ip"}
	port=${PORT:-8900}

	_main() {
	if [[ "${1:-}" =~ ^-h\|--help$ ]]
	then
	_print_help
	else
	_ychat "$name" "$port"
	fi
	}

	_main "$@"