multitester.sh

#!/usr/bin/env bash

function aboutMe() {
    printf "\n\t%s, ver %s" "${scriptName}" "${scriptVersion}"
    printf "\n\tTries to acces the supplied IP or FQDN via several methods."
    printf "\n\tDoesn't care about IPv6."
    printf "\n\n\tExample:"
    printf "\n\t\t%s %s example.com%s" "${scriptFile}" "${Emphasize}" "${ColorOff}"
    printf "\n\t\t%s %s example.com example.org%s" "${scriptFile}" "${Emphasize}" "${ColorOff}"
    printf "\n\n\tAlso has a built-in retry timer, using -r! (Note: only way to get out is killing the terminal)"
    printf "\n\t\t%s %s-r SECONDS example.com%s" "${scriptFile}" "${Emphasize}" "${ColorOff}"
    printf "\n\n\tExample:"
    printf "\n\t\t%s %s-r 20 example.com example.org%s" "${scriptFile}" "${Emphasize}" "${ColorOff}"
    printf "\n\n\tWant to add ONE custom port to the curl tests? Use -p!"
    printf "\n\t\t%s %s-p PORT example.com%s" "${scriptFile}" "${Emphasize}" "${ColorOff}"
    printf "\n\n\tExample:"
    printf "\n\t\t%s %s-p 666 example.com example.org%s" "${scriptFile}" "${Emphasize}" "${ColorOff}"
}

function colorInit() {
    ColorOff=$'\e[0m'  # Text Reset
    BWhite=$'\e[1;37m' # Bold White
    BRed=$'\e[1;31m'   # Bold Red
    LGray=$'\e[0;37m'  # Light Gray

    if [ -z "$Diminish" ]; then
        Diminish=${LGray}
    fi
    if [ -z "$Emphasize" ]; then
        Emphasize=${BRed}
    fi
}

function icmpBlast() {
    ## Ping section
    printf "\n\t%s pings: " "${numPings}"
    for icmpechoes in $(seq 1 "${numPings}"); do
        ping -t 1 -c 1 "${testItem}" 1> /dev/null 2>&1 && printf "${allOK}" || printf "${oShit}"
    done
}

function curlUnsafe() {
    printf "\n\tTrying to curl port 80 (HTTP)... "
    testURL="http://${testItem}"
    actualCurling
}

function curlSafe() {
    printf "\n\tTrying to curl port 443 (HTTPS)... "
    testURL="https://${testItem}"
    actualCurling
}

function actualCurling() {
    curl ${curlFlags} "${testURL}" 1> /dev/null 2>&1 && printf "${allOK}" || printf "${oShit}"
}

function netcat() {
    printf "\n\tTrying to netcat..."
    for portNumber in ${curlPorts}; do
        actualNetcatting
    done
}

function actualNetcatting() {
    printf "\n\t\tport %s... " "${portNumber}"
    nc ${netcatFlags} "${testItem}" "${portNumber}" 1> /dev/null 2>&1 && printf "${allOK}" || printf "${oShit}"
}

function reverseAndForwardLookup() {
    # echo $testItem
    if [[ ${testItem} =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
        # echo "Input looks like an IPv4! Let's try for Reverse DNS! "
        reverseLookup=$(host -4 -t PTR "${testItem}" | head -1 | awk '{print $NF}')
        if [ "${reverseLookup}" == "3(NXDOMAIN)" ]; then
            digOutput="No PTR/Reverse DNS! ${clownWorld}"
        else
            digOutput="${reverseLookup}"
        fi

    else
        # echo "Input does not look like an IPv4! Let's try for an A record!"
        digOutput=$(host -4 -t A "${testItem}" | head -1 | awk '{print $NF}')
    fi

}

shitInit() {
    numPings="4"

    curlPorts="22 80 443 3389"
    if [ -z "$additionalPort" ]; then
        true
    else
        curlPorts="${curlPorts} ${additionalPort}"
    fi
    curlFlags="--insecure --connect-timeout 1"

    netcatFlags="-w 1 -z"

    allOK="👌"
    oShit="💩"
    clownWorld="🤡"

    if [ -n "$STY" ] || [ -n "$TMUX" ]; then
        trap 'echo -n -e "\033k${defaultTitle}\033\\"' 0 1 2 15
        echo -n -e "\033k${scriptName}\033\\"
    fi

    # OS specific differences 🤦‍♂️
    if [[ $OSTYPE == "linux-gnu"* ]]; then
        true
    elif [[ $OSTYPE == "darwin"* ]]; then
        # Mac OSX
        netcatFlags="-G 1 -z"
    elif [[ $OSTYPE == "cygwin" ]]; then
        # POSIX compatibility layer and Linux environment emulation for Windows
        allOK="✅"
        oShit="⛔️"
        clownWorld="⛈ "
    elif [[ $OSTYPE == "msys" ]]; then
        # Lightweight shell and GNU utilities compiled for Windows (part of MinGW)
        echo "o shit it's windows msys, haven't tested this but let's try"
    elif [[ $OSTYPE == "win32" ]]; then
        # I'm not sure this can happen.
        echo "o shit it's win32, haven't tested this but let's try"
    elif [[ $OSTYPE == "freebsd"* ]]; then
        # ...
        echo "o shit it's freebsd, haven't tested this but let's try"
    else
        true
    fi
}

function letsGetReadyToRumble() {
    for testItem in ${testVictimList}; do
        reverseAndForwardLookup
        printf "\nConcerning %s%s%s (%s%s%s) - %s" "${Emphasize}" "${testItem}" "${ColorOff}" "${Emphasize}" "${digOutput}" "${ColorOff}" "${isotime}"
        icmpBlast
        curlUnsafe
        curlSafe
        netcat
        printf "\n"
    done
}

# function trap_ctrlc() {
#     # perform cleanup here
#     echo"Ctrl-C caught...performing clean up"
#     echo"Doing cleanup"
#     # exit shell script with error code 2
#     # if omitted, shell script will continue execution
#     exit2
# }
# # initialise trap to call trap_ctrlc function
# # when signal 2 (SIGINT) is received
# trap"trap_ctrlc"2

function main() {
    shitInit
    if [ "$sleepTimer" -gt 0 ]; then
        # printf "Sleep Timer has been set! Will rerun every %s%s%s seconds!" "${Emphasize}" "${sleepTimer}" "${ColorOff}"
        while true; do
            clear
            letsGetReadyToRumble
            for ((countDown = sleepTimer; countDown > 0; countDown--)); do
                tput cup 10 $l
                # echo -n "Waiting ${Emphasize}${i}${ColorOff} seconds and doing it all again!"
                printf "\n\n\t\t\tWaiting %s%s%s seconds and doing it all again!" "${Emphasize}" "${countDown}" "${ColorOff}"
                sleep 1
            done
        done
    else
        letsGetReadyToRumble
    fi
}

defaultTitle=${HOSTNAME}
scriptFile=$(basename "${0}")
scriptName="multitester"
scriptVersion="2020-09-08 JGM"
sleepTimer="0"
isotime="$(date +"%Y-%m-%dT%H:%M:%SZ")"

colorInit

## Fjernet fordi jeg ikke gider at fjerne OPTARGs fra $*
while getopts ":r:p:" opt; do
    case $opt in
        r)
            echo -e "\n-r was triggered, so I shall retry every $OPTARG seconds" >&2
            export sleepTimer="${OPTARG}"
            ;;
        p)
            printf "\n-p was triggerede, adding port %s to the mix!" "${OPTARG}"
            export additionalPort="${OPTARG}"
            ;;
        \?)
            echo "Invalid option: -$OPTARG" >&2
            exit 1
            ;;
        :)
            echo "Option -$OPTARG requires an argument." >&2
            exit 1
            ;;
    esac
done
shift $((OPTIND - 1))
testVictimList="${*}"

if [ "$#" -lt 1 ]; then
    clear
    aboutMe
    exit
else
    clear
    main
fi

Netcat does not time out in the supplied timeout soooooo the script doesn't try it.

Netcat does not time out in the supplied timeout soooooo the script doesn't try it.

OK, different flag on macOS, so had to put in a section to differentiate in shitInit. Put in some emoji differentiators in as Windows/cygwin does not play nice with most emoji.

Fixed getopts