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66
README.md
66
README.md
@ -1,29 +1,32 @@
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# conn
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__the script is actively being rewritten on this branch and might not be on a usable state right now__
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quick and dirty server availability check <br> <br>
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basically just a way too complex wrapper for nmap and fping <br>
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the pre-rewrite version is available as conn.sh.old and is no longer maintained <br>
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### features:
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- ~~multi-input detection~~ (not needed anymore since the rewrite)
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- ~~ipv4 input detection~~ (not needed anymore since the rewrite)
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- ~~ipv6 input detection~~ (not needed anymore since the rewrite)
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- multi-input detection
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- ipv4 input detection
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- ipv6 input detection
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- waiting for availability
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- send notification on availability
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- updater built in
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# usage
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Usage: conn <args> [IP(s)/hostname(s)] <br>
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Usage: conn (options) [ip] <br>
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Options: <br>
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-h / --help show help page (this) <br>
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-6 / --force-ipv6 force ipv6 portscanning (also forces portscanning) <br>
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-4 / --force-ipv4 force ipv4 portscanning (also forces portscanning) <br>
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-y / --yes portscan without asking <br>
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-n / --no dont portscan <br>
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-w / --wait wait for active connection <br>
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-u / --update update the script <br>
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-f / --fast disable os check <br>
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-s / --simple simplify output <br>
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-m/--multi -- test multiple ips / disable portscan <br>
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-h/--help -- show help <br>
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-6/--force-ipv6 -- force ipv6 portscanning (also forces portscanning) <br>
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-4/--force-ipv4 -- force ipv4 portscanning (also forces portscanning) <br>
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-y/--yes -- portscan without asking <br>
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-n/--no -- dont portscan <br>
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-p/--portscan -- same as -y <br>
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-w/--wait -- wait for active connection <br>
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-u/--update -- update the script <br>
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-f/ --fast -- disable os check <br>
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-s/ --simple -- same as -f <br>
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# installation
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1. download the script: <br>
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@ -43,33 +46,28 @@ chmod +x conn.sh && ./conn.sh
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# sample output
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```bash
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./conn.sh nils.lol
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checking connection status for nils.lol
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checking connection status for localhost
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-------------------Availability----------------------
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nils.lol is alive (35.5 ms)
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localhost is alive (545 ms)
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note: this seems to be a linux machine
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-----------------------------------------------------
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portscan? (y/n) (default: y)
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-------------------Portscan---------------------
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Starting Nmap 7.92 ( https://nmap.org ) at 2021-12-05 13:42 CET
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Nmap scan report for nils.lol (168.119.185.158)
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Host is up, received user-set (0.048s latency).
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Not shown: 995 filtered tcp ports (no-response)
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Starting Nmap 7.91 ( https://nmap.org ) at 2021-02-15 15:07 CET
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Nmap scan report for localhost (127.0.0.1)
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Host is up, received user-set (0.047s latency).
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Other addresses for localhost (not scanned): ::1
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Not shown: 998 closed ports
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Reason: 998 conn-refused
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PORT STATE SERVICE REASON
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21/tcp open ftp syn-ack
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22/tcp open ssh syn-ack
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80/tcp open http syn-ack
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81/tcp closed hosts2-ns conn-refused
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443/tcp open https syn-ack
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631/tcp open ipp syn-ack
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Nmap done: 1 IP address (1 host up) scanned in 3.23 seconds
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Nmap done: 1 IP address (1 host up) scanned in 5.54 seconds
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localhost : [0], 64 bytes, 0.185 ms (0.185 avg, 0% loss)
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localhost : [1], 64 bytes, 0.058 ms (0.122 avg, 0% loss)
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localhost : [2], 64 bytes, 0.060 ms (0.101 avg, 0% loss)
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localhost : [3], 64 bytes, 0.081 ms (0.096 avg, 0% loss)
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nils.lol : [0], 64 bytes, 36.5 ms (36.5 avg, 0% loss)
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nils.lol : [1], 64 bytes, 35.7 ms (36.1 avg, 0% loss)
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nils.lol : [2], 64 bytes, 34.7 ms (35.6 avg, 0% loss)
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nils.lol : [3], 64 bytes, 33.5 ms (35.1 avg, 0% loss)
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nils.lol : xmt/rcv/%loss = 4/4/0%, min/avg/max = 33.5/35.1/36.5
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localhost : xmt/rcv/%loss = 4/4/0%, min/avg/max = 0.058/0.096/0.185
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------------------------------------------------
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```
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196
conn.sh
196
conn.sh
@ -17,6 +17,19 @@ arguments:
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-f / --fast disable os check
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-s / --simple simplify output"
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show_notfound="[error] argument not found
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available arguments:
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-h / --help show help page (this)
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-6 / --force-ipv6 force ipv6 portscanning (also forces portscanning)
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-4 / --force-ipv4 force ipv4 portscanning (also forces portscanning)
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-y / --yes portscan without asking
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-n / --no dont portscan
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-w / --wait wait for active connection
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-u / --update update the script
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-f / --fast disable os check
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-s / --simple simplify output"
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function check_update {
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if [[ $(curl -s https://raw.githubusercontent.com/byReqz/conn/main/hash) != $(md5sum $0 | cut -c -32) ]] && [[ -z $1 ]] || [[ $(curl -s https://raw.githubusercontent.com/byReqz/conn/main/hash) != $(md5sum $0 | cut -c -32) ]] && [[ $1 != "--update" ]] || [[ $(curl -s https://raw.githubusercontent.com/byReqz/conn/main/hash) != $(md5sum $0 | cut -c -32) ]] && [[ $1 != "-u" ]];then
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echo "#############################################"
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@ -42,198 +55,47 @@ function run_update {
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}
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function prepare {
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check_update
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get_args "$@"
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#check_update
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get_args $@
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set_argvars $args
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validate $input
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}
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function get_args {
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input=$(echo " $@")
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input=$(echo "$@")
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args=$(echo "$input" | grep -o -e "-h" -e "--help" -e "-6" -e "--force-ipv6" -e "-4" -e "--force-ipv4" -e "-y" -e "--yes" -e "-n" -e "--no" -e "-w" -e "--wait" -e "-u" -e "--update" -e "-f" -e "--fast" -e "-s" -e "--simple" | xargs)
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for arg in $args; do
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input=$(echo "$input" | sed "s/$arg//g")
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done
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#quick fix to prevent nslookups interactive mode being triggered by invalid arguments
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#some other places in the code have also gotten a leading space to prevent similar issues
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for v in $input; do
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if [[ ! $(echo $v | cut -c1) == "-" ]];then
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newinput="$newinput $v"
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else
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newinput="$newinput $(echo $v | cut -c 2-)"
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fi
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done
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input="$newinput"
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# needs work
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# argcheck=$(echo $input | grep -o -e " -* " | xargs)
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# echo $argcheck
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# if [[ -n "$argcheck" ]];then
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# for arg in $argcheck; do
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# echo "the given argument \""$arg"\" is not known"
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# done
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# fi
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}
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function set_argvars {
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if [[ $@ =~ -6 ]] || [[ $@ =~ --force-ipv6 ]];then
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only="-6"
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only6=true
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fi
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if [[ $@ =~ -4 ]] || [[ $@ =~ --force-ipv4 ]];then
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only="-4"
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fi
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if [[ $@ =~ -y ]] || [[ $@ =~ --yes ]];then
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doportscan=true
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fi
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if [[ $@ =~ -n ]] || [[ $@ =~ --no ]];then
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doportscan=false
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fi
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if [[ $@ =~ -s ]] || [[ $@ =~ --simple ]];then
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simpleoutput=true
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fi
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if [[ $@ =~ -w ]] || [[ $@ =~ --wait ]];then
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waitcheck=true
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fi
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if [[ $@ =~ -f ]] || [[ $@ =~ --fast ]];then
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oscheck=false
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fi
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}
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function validate {
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for arg in $@; do
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if [[ "$arg" =~ : ]];then
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only="-6" # enable ipv6, this needs a more complex function to avoid treating every argument as v6
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fi
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if ip route show "$arg" 2&> /dev/null;then
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hosts="$hosts $arg"
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elif nslookup "$arg" > /dev/null;then
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hosts="$hosts $arg"
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else
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echo "invalid input: $arg"
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fi
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done
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}
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function main {
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if [[ $simpleoutput == true ]] && [[ -n $hosts ]];then
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echo "-------------------Availability----------------------"
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fping $only -e $@
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if [[ $oscheck != "false" ]];then
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echo ""
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for host in $@;do
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linuxping=$(nping $only -c1 -p22,222 "$host")
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if [[ -n $(echo "$linuxping" | grep -e "Successful connections: 1") ]];then
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echo "$host seems to be booted into a Linux system"
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elif [[ -n $(echo "$linuxping" | grep -e "Successful connections: 2") ]];then
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echo "$host seems to be booted into the rescue system"
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fi
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winping135=$(nping $only -c1 -p135 "$host")
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winping3389=$(nping $only -c1 -p3389 "$host")
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if [[ -n $(echo "$winping135" | grep -e "Successful connections: 1") ]] && [[ -n $(echo "$winping3389" | grep -e "Successful connections: 1") ]];then
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echo "$host seems to be booted into Windows"
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elif [[ -z $(fping $only -a $host) ]] && [[ -n $(echo "$winping3389" | grep -e "Successful connections: 1") ]];then
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echo "$host seems to be booted into (desktop) Windows"
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fi
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done
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fi
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echo "-----------------------------------------------------"
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else
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for host in $hosts;do
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if [[ $waitcheck == true ]];then
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echo "-w used, waiting for active connection"
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echo "checking connection status for $host"
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fping=$(fping $only -a $host)
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if [[ ! $oscheck == false ]];then
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p135=$(nping $only -q1 -c1 -p135 $host)
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p3389=$(nping $only -q1 -c1 -p3389 $host)
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fi
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if [[ $fping != "$host" ]] && [[ -n $(echo $p135 | grep "Successful connections: 1") ]] || [[ $fping != "$host" ]] && [[ -n $(echo $p3389 | grep "Successful connections: 1") ]];then
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echo "-------------------Availability----------------------"
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echo "note: this seems to be a windows machine which does not respond to ICMP"
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notify-send "$host is now reachable" "and seems to be a windows machine" -u normal -t 30000 -a conn
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echo "-----------------------------------------------------"
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elif [[ $fping = "$host" ]] && [[ -n $(echo $p135 | grep "Successful connections: 1") ]];then
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echo "-------------------Availability----------------------"
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echo "note: this seems to be a windows machine which does respond to ICMP"
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fping -e $host
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notify-send "$host is now reachable" "and seems to be a windows machine" -u normal -t 30000 -a conn
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echo "-----------------------------------------------------"
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else
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while [[ "$(fping $only -m -q -u $host)" == "$host" ]]; do :
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done
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echo "-------------------Availability----------------------"
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fping -e $host
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if [[ ! $oscheck == false ]];then
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rescue=$(nping $only -q1 -c1 -p22,222 $host)
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fi
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if [[ -n $(echo $rescue | grep "Successful connections: 1") ]];then
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echo "note: this seems to be a linux machine"
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notify-send "$host is now reachable" "and seems to be in a linux system" -u normal -t 30000 -a conn
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elif [[ -n $(echo $rescue | grep "Successful connections: 2") ]];then
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echo "note: this machine seems to be in the rescue system"
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notify-send "$host is now reachable" "and seems to be in the rescue system" -u normal -t 30000 -a conn
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elif [[ -n $(echo $p135 | grep "Successful connections: 1") ]] || [[ -n $(echo $p3389 | grep "Successful connections: 1") ]];then
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echo "note: this machine seems to be booted into windows"
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notify-send "$host is now reachable" "and seems to be booted into windows" -u normal -t 30000 -a conn
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else
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notify-send "$host is now reachable" -u normal -t 30000 -a conn
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fi
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echo "-----------------------------------------------------"
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fi
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else
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echo "checking connection status for $host"
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fping=$(fping $only -a $host)
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if [[ ! $oscheck == false ]];then
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p135=$(nping $only -q1 -c1 -p135 $host)
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p3389=$(nping $only -q1 -c1 -p3389 $host)
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fi
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if [[ $fping != "$host" ]] && [[ -n $(echo $p135 | grep "Successful connections: 1") ]] || [[ $fping != "$host" ]] && [[ -n $(echo $p3389 | grep "Successful connections: 1") ]];then
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echo "-------------------Availability----------------------"
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echo "note: this seems to be a windows machine which does not respond to ICMP"
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echo "-----------------------------------------------------"
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elif [[ $fping != "$host" ]] && [[ -z $(echo $p135 | grep "Successful connections: 1") ]] || [[ $fping != "$host" ]] && [[ -z $(echo $p3389 | grep "Successful connections: 1") ]];then
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echo "-------------------Availability----------------------"
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echo "$host is not reachable"
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echo "-----------------------------------------------------"
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else
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echo "-------------------Availability----------------------"
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fping $only -e $host
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if [[ ! $oscheck == false ]];then
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rescue=$(nping $only -q1 -c1 -p22,222 $host)
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if [[ -n $(echo $rescue | grep "Successful connections: 1") ]];then
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echo "note: this seems to be a linux machine"
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elif [[ -n $(echo $rescue | grep "Successful connections: 2") ]];then
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echo "note: this machine seems to be in the rescue system"
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elif [[ -n $(echo $p135 | grep "Successful connections: 1") ]] || [[ -n $(echo $p3389 | grep "Successful connections: 1") ]];then
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echo "note: this machine seems to be booted into windows"
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fi
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fi
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echo "-----------------------------------------------------"
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fi
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fi
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if [[ ! $doportscan == false ]];then
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if [[ $doportscan == true ]];then
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portscan=y
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else
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echo "portscan? (y/n) (default: y)"
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read portscan
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fi
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if [[ "$portscan" = "y" ]] || [[ -z "$portscan" ]]; then
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echo "-------------------Portscan---------------------"
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nmap $only --reason -Pn $host
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echo ""
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fping $only -c 4 $host
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echo "------------------------------------------------"
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echo ""
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else
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echo ""
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fi
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fi
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done
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fi
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true
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}
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if [[ -n $1 ]];then
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prepare "$@"
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main "$hosts"
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prepare $@
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main "$input"
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elif [[ "$1" == "-u" ]];then
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run_update
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elif [[ "$1" == "-h" ]];then
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check_update
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echo "$show_help"
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else
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check_update
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#check_update
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echo "$show_help"
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fi
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Reference in New Issue
Block a user