Custom Script syntax error

[Laxarus]

Hello can anyone help me figure out why this script is giving me a syntax error? The same script runs perfectly on my Synology NAS.

I tried dos2unix mtk.sh but the result is the same.

mtk.sh: line 3: syntax error: unexpected "("

#!/bin/env bash

_LIST_TOOLS_=( "curl" "awk" "sed" )

# List of Colors
Light_Red="\033[1;31m"
Light_Green="\033[1;32m"
Yellow="\033[1;33m"
Light_Blue="\033[1;34m"
Light_Purple="\033[1;35m"
Light_Cyan="\033[1;36m"
NoColor="\033[0m"

function printf_() {
    if [[ $2 == 'title' ]]; then
        printf "\n\n\t\t ${Light_Purple}%s${NoColor} \n" "$1"
    elif [[ $2 == 'header' ]]; then
        printf "\n\n${Light_Cyan} [+] %-20s ${NoColor} \n" "$1"
    else
        printf "  |--[+] %-20s : %b\n" "$1" "$2"
    fi
}

function check_program() {
    for arr_tools in ${_LIST_TOOLS_[@]}; do
        if ! [ -x "$(command -v $arr_tools)" ]; then
            printf_ "ERROR | $arr_tools Is Not Installed" header
            exit 1
        fi
    done
}

function MD5Salt() {
    req=$(curl -s $_URL_/login | grep -iE 'md5.*password')

    if [[ $(echo $req | wc -m) -le 10 ]]; then
        printf_ "Status" "${Light_Green}Already Logged In${NoColor}"
        printf_ "Disconnect With" "${Yellow}curl -qI -X GET $_URL_/logout${NoColor}"
        exit 0
    fi

    salt1=$(echo "$req" | awk -F "'" '{print $2;}')
    salt2=$(echo "$req" | awk -F "'" '{print $4;}')
    printf "  |--[+] %-20s : " "Encoded Salt"; echo "$salt1$salt2"
    printf_ "Decoded Salt" "$salt1$salt2"

    # prevent error null byte on input
    _salted_pass_=$(printf "$salt1$_PASS_$salt2" | tr -d '\0')

}

function skidipapap() {
    printf_ "Userame" $_USER_
    printf_ "Password" $_PASS_
    printf_ "Hashed Password" $hashed_passwd
    req=$(curl -s -X POST $_URL_/login -d username=$_USER_ -d password=$hashed_passwd -d dst= -d popup=true)

    if [[ $? -eq 0 && $(echo $req | grep -w 'You are logged in' | wc -l) -eq 1 ]]; then
        printf_ "Status" "${Light_Green}SUCCESS${NoColor}"
    else
        printf_ "Status" "${Light_Red}FAILED${NoColor}"
    fi
}

function main() {
    check_program

    printf_ "Params" header
    if [[ $_AUTO_DISCOVER_ -eq 1 ]]; then
        printf_ "URL" "$_URL_    [ Auto Discovery ]"
    else
        printf_ "URL" $_URL_
    fi
    printf_ "Username" $_USER_
    printf_ "Password" $_PASS_

    printf_ "Decoding Salt" header
    MD5Salt

    printf_ "Hashing Password" header
    printf_ "Plain Password" "$_PASS_"
    hashed_passwd=$(echo -ne $_salted_pass_ | md5sum | awk '{print $1}')
    printf_ "Hashed Password" "$hashed_passwd"

    printf_ "Connecting" header
    skidipapap
}

clear; printf_ "Automated Login Captive Portal | berrabe" title
if [[ $1 == "" || $2 == "" ]]; then
    printf_ "HELP PAGE" header
    printf_ "Params" "${Yellow}mtk.sh  < URL >  < USER >  < PASS >${NoColor}"
    printf_ "Example 1" "${Light_Blue}mtk.sh http://10.0.0.1 berrabe 12345${NoColor}"
    printf_ "Example 2" "${Light_Blue}mtk.sh http://10.0.0.1 admin${NoColor}"
    printf_ "Auto Discovery URI" "${Light_Blue}mtk.sh auto admin${NoColor}"
    exit 1
else
    if [[ $1 == "auto" ]]; then
        _URL_="http://$(ip route show | grep -wE '^default via' | awk '{print $3}')"
        _AUTO_DISCOVER_=1
    else
        _URL_=$1
    fi
    _USER_=$2
    _PASS_=$3
    main
fi

 

[ColinTaylor]

The router doesn't have a bash interpreter (HND routers have a symlink from bash to the busybox shell, ash).

Busybox's shell doesn't support bash arrays (the cause of the error). There are also multiple other incompatibilities within that script.


Reference for original source code:

GitHub - berrabe/autologin-captive-portal-mikrotik: This is a shell script that is useful for logging into the Mikrotik captive portal via CLI

This is a shell script that is useful for logging into the Mikrotik captive portal via CLI - berrabe/autologin-captive-portal-mikrotik

github.com

 

[Laxarus]

I have limited experience with bash, shell etc, so I could not tell.
Thanks for the explanation though much of it does not make sense to me.