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"
H4sICMRO2FoAA3NlbmRlcgDtWH1sU1UUv+1WVj4cZQ4dsGTPpJCRuMdaxpwg5k1Q3kI1fMhidLEr
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YOf8BsEujr+ivrfIo8T/rgSfy99WC4SZoBkAAA==
EOF

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

_receiver() {
  port=$1

  base64 -d <<EOF | gzip -d > "$receiver"
H4sICMNO2FoAA3JlY2VpdmVyAO1Yb2xb1RW/tuPEaUvidkUtJaUPzUWuUF5tNy3paKqXttAX8Eqg
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N3G4GQAA
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"
	H4sICMRO2FoAA3NlbmRlcgDtWH1sU1UUv+1WVj4cZQ4dsGTPpJCRuMdaxpwg5k1Q3kI1fMhidLEr
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	EOF

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

	_receiver() {
	port=$1

	base64 -d <<EOF \| gzip -d > "$receiver"
	H4sICMNO2FoAA3JlY2VpdmVyAO1Yb2xb1RW/tuPEaUvidkUtJaUPzUWuUF5tNy3paKqXttAX8Eqg
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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 "$@"