bin: add dnsleaktest 🥷 - dotfiles - 🍚 personal arsenal of "rice"
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       ---
   DIR commit 679b80d8e4eaa2b1d8fd5dcdeb7fdbf9b1896e06
   DIR parent 03bfde0f7ee8d8625a8ecc318a2dda93a8217b7f
  HTML Author: drkhsh <me@drkhsh.at>
       Date:   Fri,  8 Mar 2024 22:33:32 +0100
       
       bin: add dnsleaktest 🥷
       
       Diffstat:
         A bin/bin/dnsleaktest                 |     143 +++++++++++++++++++++++++++++++
       
       1 file changed, 143 insertions(+), 0 deletions(-)
       ---
   DIR diff --git a/bin/bin/dnsleaktest b/bin/bin/dnsleaktest
       @@ -0,0 +1,142 @@
       +#!/usr/bin/env bash
       +#usage:   ./dnsleaktest.sh [-i interface_ip|interface_name]
       +#example: ./dnsleaktest.sh -i eth1
       +#         ./dnsleaktest.sh -i 10.0.0.2
       +
       +RED='\033[0;31m'
       +BOLD='\033[1m'
       +NC='\033[0m'
       +api_domain='bash.ws'
       +error_code=1
       +
       +getopts "i:" opt
       +interface=$OPTARG
       +
       +function echo_bold {
       +    echo -e "${BOLD}${1}${NC}"
       +}
       +
       +if [ -z "$interface" ]; then
       +    curl_interface=""
       +    ping_interface=""
       +else
       +    curl_interface="--interface ${interface}"
       +    ping_interface="-I ${interface}"
       +    echo_bold "Interface: ${interface}"
       +    echo ""
       +fi
       +
       +function increment_error_code {
       +    error_code=$((error_code + 1))
       +}
       +
       +function echo_error {
       +    (>&2 echo -e "${RED}${1}${NC}")
       +}
       +
       +function require_command {
       +    command -v $1 > /dev/null
       +    if [ $? -ne 0 ]; then
       +        echo_error "Please, install \"$1\""
       +        exit $error_code
       +    fi
       +    increment_error_code
       +}
       +
       +function check_internet_connection {
       +    curl --silent --head ${curl_interface} --request GET "https://${api_domain}" | grep "200 OK" > /dev/null
       +    if [ $? -ne 0 ]; then
       +        echo_error "No internet connection."
       +        exit $error_code
       +    fi
       +    increment_error_code
       +}
       +
       +require_command curl
       +require_command ping
       +check_internet_connection
       +
       +if command -v jq &> /dev/null; then
       +    jq_exists=1
       +else
       +    jq_exists=0
       +fi
       +
       +if hash shuf 2>/dev/null; then
       +    id=$(shuf -i 1000000-9999999 -n 1)
       +else
       +    id=$(jot -w %i -r 1 1000000 9999999)
       +fi
       +
       +for i in $(seq 1 10); do
       +    ping -c 1 ${ping_interface} "${i}.${id}.${api_domain}" > /dev/null 2>&1
       +done
       +
       +function print_servers {
       +
       +    if (( $jq_exists )); then
       +
       +        echo ${result_json} | \
       +            jq  --monochrome-output \
       +            --raw-output \
       +            ".[] | select(.type == \"${1}\") | \"\(.ip)\(if .country_name != \"\" and  .country_name != false then \" [\(.country_name)\(if .asn != \"\" and .asn != false then \" \(.asn)\" else \"\" end)]\" else \"\" end)\""
       +
       +    else
       +
       +        while IFS= read -r line; do
       +            if [[ "$line" != *${1} ]]; then
       +                continue
       +            fi
       +
       +            ip=$(echo $line | cut -d'|' -f 1)
       +            code=$(echo $line | cut -d'|' -f 2)
       +            country=$(echo $line | cut -d'|' -f 3)
       +            asn=$(echo $line | cut -d'|' -f 4)
       +
       +            if [ -z "${ip// }" ]; then
       +                 continue
       +            fi
       +
       +            if [ -z "${country// }" ]; then
       +                 echo "$ip"
       +            else
       +                 if [ -z "${asn// }" ]; then
       +                     echo "$ip [$country]"
       +                 else
       +                     echo "$ip [$country, $asn]"
       +                 fi
       +            fi
       +        done <<< "$result_txt"
       +
       +    fi
       +}
       +
       +
       +if (( $jq_exists )); then
       +    result_json=$(curl ${curl_interface} --silent "https://${api_domain}/dnsleak/test/${id}?json")
       +else
       +    result_txt=$(curl ${curl_interface} --silent "https://${api_domain}/dnsleak/test/${id}?txt")
       +fi
       +
       +dns_count=$(print_servers "dns" | wc -l)
       +
       +echo_bold "Your IP:"
       +print_servers "ip"
       +
       +echo ""
       +if [ ${dns_count} -eq "0" ];then
       +    echo_bold "No DNS servers found"
       +else
       +    if [ ${dns_count} -eq "1" ];then
       +        echo_bold "You use ${dns_count} DNS server:"
       +    else
       +        echo_bold "You use ${dns_count} DNS servers:"
       +    fi
       +    print_servers "dns"
       +fi
       +
       +echo ""
       +echo_bold "Conclusion:"
       +print_servers "conclusion"
       +
       +exit 0
       +\ No newline at end of file