128 lines
1.7 KiB
Bash
Executable File
128 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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set -e
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mode="${1}"
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ip="${2}"
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port="${3}"
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nick="${4}"
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print_usage() {
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echo "${1}"
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echo "${0} <MODE> <IP> <PORT> [NICK]"
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echo "Modes: interactive (intr), send, receive (rec)"
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exit
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}
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[ -z "${ip}" ] && print_usage 'No IP given.'
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[ -z "${port}" ] && print_usage 'No port given.'
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[ -z "${5}" ] || print_usage 'Too many arguments.'
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[ -z "${nick}" ] || nick="<${nick}> "
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open_socket() {
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exec 3<> "/dev/tcp/${ip}/${port}"
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}
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close_socket() {
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exec 3>&-
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}
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send_message() {
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open_socket
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echo "${1}" >&3
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close_socket
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}
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get_message() {
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open_socket
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echo "${1}" >&3
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cat <&3 || true
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close_socket
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}
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case "${mode}" in
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intr)
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;&
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interactive)
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;;
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send)
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open_socket
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text="${nick}$(cat)"
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send_message "0${text}"
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close_socket
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exit
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;;
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rec)
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;&
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receive)
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length="$(get_message 1)"
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open_socket
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echo -n 2 >&3
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head -c "${length}" <&3
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close_socket
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exit
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;;
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*)
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echo Unknown mode
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exit
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esac
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print_messages() {
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open_socket
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echo -n 2 >&3
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head -c "${1}" <&3 | sed -e 's/\x1B/ESC/g'
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close_socket
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}
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length=0
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while :; do
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read cmd
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case "${cmd}" in
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I)
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b=""
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while :; do
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read c
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[[ "${c}" != "." ]] || break
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if [ -z ${b} ]; then
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b="${c}"
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else
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b="${b}"$'\n'"${c}"
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fi
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done
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send_message 0"${nick}${b}"
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;;
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i)
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read a
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send_message 0"${nick}${a}"
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;;
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L)
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length="$(get_message 1)"
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;;
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l)
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echo "${length}"
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;;
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w)
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oldlength="${length}"
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while :; do
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length="$(get_message 1)"
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if [ "${oldlength}" -ne "${length}" ]; then
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break
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fi
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echo -n .
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sleep 1
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done
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echo
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print_messages "${length}"
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;;
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p)
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length="$(get_message 1)"
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print_messages "${length}"
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;;
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q)
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exit
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;;
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*)
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echo ?
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;;
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esac
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done
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