added scripts and readme

README.md

@@ -1,3 +1,25 @@
-# netchatte
+```
+  ,-.       _,---._ __  / \
+ /  )    .-'       `./ /   \
+(  (   ,'            `/    /|
+ \  `-"             \'\   / |
+  `.              ,  \ \ /  |
+   /`.          ,'-`----Y   |
+  (            ;        |   '
+  |  ,-.    ,-'         |  /
+  |  | (   |        hjw | /
+  )  |  \  `.___________|/
+  `--'   `--'`
+  ```
+  
+copyleft, 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/)
+
+
+# usage: chmod all .sh files, be on the same network and run ./netchatte.sh
+
+
+
 
-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/)

netchatte.sh

@@ -0,0 +1,151 @@
+#!/usr/bin/env bash
+# usage: chmod all .sh files, be on the same network and run ./netchatte.sh
+# todo:
+# nicknames
+# filesharing
+
+
+# copyleft, 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/)
+# 
+
+#init
+unset ALLCLIENTS
+unset TEMPCLIENTS
+unset IP
+#define listen port
+#define server port....
+
+
+#functions
+mainMenu ()
+{
+	printf "\n ===== MAIN MENU ===== \n"
+	printf "\n"
+	echo "Hello, pick an option:"
+	printf "\n"
+    select mainMenu in "Who is online?" "Chat"
+		do
+    	#echo $mainMenu
+    	case $mainMenu in
+    		"Who is online?")
+				scan
+			;;
+			Chat)
+				chat
+			;;
+    	# if [ '1' = "$REPLY" ]; then
+    	# 	scan
+   		# fi
+
+    	#echo "Selected number: $REPLY"
+    	esac
+	done
+}
+
+
+
+
+scan ()
+{
+	printf "\n"
+	sleep 0
+    echo "Searching for friends..."
+    sleep 2
+    printf "\n"
+    #scanOutput=$(arp -a | awk -F'[()]' '{print $2}' | head -1)
+    
+    # find all machines on the network
+	while IFS= read -r LINE; do
+  		ALLCLIENTS+=("${LINE}")
+  		#REALCLIENTS=( $(nc -zv -G 1 ${LINE} 1234 2>&1  | grep --line-buffered succeeded | awk '{print $3}') )   #see if port of client is open
+	done < <(arp -a -x | awk '{print $1}' | tail -n +2) 
+	
+	
+	# for each machine, see if we can connect to it
+	for i in "${ALLCLIENTS[@]}"
+	do
+   	: 
+   	TEMPCLIENTS=( $(nc -zv -G 1 $i 1234 2>&1  | grep --line-buffered succeeded | awk '{print $3}'  ))
+	
+
+
+	if [ ${#TEMPCLIENTS[@]} -eq 0 ]; then
+    	echo "."
+    	#printf "\n"
+    	
+	else
+    	#echo "Found the following clients:"
+    	#echo "$i"
+    	REALCLIENTS+=("${i}")
+	fi
+
+
+    
+
+	done
+
+
+	# Iterate over an array to create select menu
+	if [ ${#REALCLIENTS[@]} -eq 0 ]; then
+		echo "No clients found :("
+		printf "\n"
+	else
+		echo "Found a friend!:"
+		printf "\n"
+		#echo "${#REALCLIENTS[@]}"
+	fi
+	select IP in "${REALCLIENTS[@]}" "Back to main menu"; do
+  		case ${IP} in
+   		 	1*) #limitation: ip must start with a 1....
+      			echo "Client ${IP} selected"
+      			IP+=("${IP}")
+      		# Further processing
+      		
+      		;;
+    		"Back to main menu")
+    			printf "\n"
+     			mainMenu
+      		#break
+      		;;
+    		*)
+      			echo "Not available"
+      		;;
+  		esac
+	done
+
+}
+
+
+chat ()
+{   
+   screen -c screenrc #launch split screen session with tx.sh and rx.sh
+}
+
+#Main 'loop'
+echo "booting...netchatte"
+sleep 1
+printf "\n"
+
+cat << "EOF"
+  ,-.       _,---._ __  / \
+ /  )    .-'       `./ /   \
+(  (   ,'            `/    /|
+ \  `-"             \'\   / |
+  `.              ,  \ \ /  |
+   /`.          ,'-`----Y   |
+  (            ;        |   '
+  |  ,-.    ,-'         |  /
+  |  | (   |        hjw | /
+  )  |  \  `.___________|/
+  `--'   `--'
+EOF
+
+
+killall nc &> /dev/null   # clean up (maybe add killall screen..haha dirty)
+mainMenu #start main function
+
+
+
+

rx.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+LOCALIP=$(ipconfig getifaddr en0)
+
+
+while true
+do
+    nc -lk ${LOCALIP} 1234 #this shoul be remote ip
+done

screenrc

@@ -0,0 +1,6 @@
+bindkey ^D quit
+screen -t you bash ./tx.sh
+split 
+focus down
+screen -t friend bash ./rx.sh
+focus up

tx.sh

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