netchatte is a netcat based terminal chat program, inspired by 'unnamed project' and made during the first tangible clouds worksession 18th → 21st May 2022 in Brussels (https://tangible-cloud.be/)
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131 lines
2.9 KiB
131 lines
2.9 KiB
#!/usr/bin/env bash
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LOCALIP=$(ipconfig getifaddr en0)
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#setup
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foundfriend=0
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#functions
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mainMenu ()
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{
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printf "\n ===== MAIN MENU ===== \n"
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printf "\n"
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echo "Hello, pick an option:"
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printf "\n"
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select mainMenu in "Who is online?" "Chat"
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do
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#echo $mainMenu
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case $mainMenu in
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"Who is online?")
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scan
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;;
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Chat)
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chat
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;;
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# if [ '1' = "$REPLY" ]; then
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# scan
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# fi
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#echo "Selected number: $REPLY"
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esac
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done
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}
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while : ; do
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unset ALLCLIENTS
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unset TEMPCLIENTS
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unset REALCLIENTS
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printf "\n"
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echo "Waiting for friends..."
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sleep 2
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#printf "\n"
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#scanOutput=$(arp -a | awk -F'[()]' '{print $2}' | head -1)
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# find all machines on the network
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while IFS= read -r LINE; do
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ALLCLIENTS+=("${LINE}")
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#REALCLIENTS=( $(nc -zv -G 1 ${LINE} 1234 2>&1 | grep --line-buffered succeeded | awk '{print $3}') ) #see if port of client is open
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done < <(arp -a -x | awk '{print $1}' | tail -n +2)
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# for each machine, see if we can connect to it
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for i in "${ALLCLIENTS[@]}"
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do
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:
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TEMPCLIENTS=( $(nc -zv -G 1 $i 1234 2>&1 | grep --line-buffered succeeded | awk '{print $3}' ))
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if [ ${#TEMPCLIENTS[@]} -eq 0 ]; then
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echo -ne "."
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#printf "\n"
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else
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#echo "Found the following clients:"
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#echo "$i"
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REALCLIENTS+=("${i}")
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fi
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done
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#remove own IP from array (breaks the 'no clients found' script below...somehow)
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#echo ${LOCALIP}
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delete=${LOCALIP}
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#echo "localhost:.."
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echo "${REALCLIENTS[@]/$delete}"
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if [ ${#REALCLIENTS[@]} -eq 0 ]; then
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echo "No clients found :("
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printf "\n"
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else
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if [ ${#REALCLIENTS[@]} -ne 0 ] && [ "${REALCLIENTS}" != "${LOCALIP}" ] ; then #remove your own ip, make a list you can choose from here, and add nickname
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echo "Found a friend!:"
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select IP in "${REALCLIENTS[@]}" "Back to main menu"; do
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case ${IP} in
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1*) #limitation: ip must start with a 1....
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echo "Client ${IP} selected"
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IP+=("${IP}")
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printf "\n"
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echo "${IP}"
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printf "\n"
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printf "Connecting..."
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printf "\n"
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sleep 1
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printf "Connected! Type your message and press [enter], CTRL+D to quit:"
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printf "\n\n"
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#construct a string to be send to nc...todo
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# read -p 'Please choose a nickname: ' nickname
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# echo -ne "$nickname" # how to prepend a nickname and send it
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# https://superuser.com/questions/261900/how-can-i-pipe-commands-to-a-netcat-that-will-stay-alive
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nc ${IP} 1234
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;;
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"Back to main menu")
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printf "\n"
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mainMenu
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#break
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;;
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*)
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echo "Not available"
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;;
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esac
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done
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break
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fi
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sleep 5
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fi
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done
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