142 lines
3.2 KiB
Bash
Executable File
142 lines
3.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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#usage: ./dnsleaktest.sh [-i interface_ip|interface_name]
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#example: ./dnsleaktest.sh -i eth1
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# ./dnsleaktest.sh -i 10.0.0.2
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RED='\033[0;31m'
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BOLD='\033[1m'
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NC='\033[0m'
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api_domain='bash.ws'
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error_code=1
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getopts "i:" opt
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interface=$OPTARG
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function echo_bold {
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echo -e "${BOLD}${1}${NC}"
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}
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if [ -z "$interface" ]; then
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curl_interface=""
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ping_interface=""
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else
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curl_interface="--interface ${interface}"
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ping_interface="-I ${interface}"
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echo_bold "Interface: ${interface}"
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echo ""
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fi
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function increment_error_code {
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error_code=$((error_code + 1))
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}
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function echo_error {
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(>&2 echo -e "${RED}${1}${NC}")
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}
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function require_command {
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command -v $1 > /dev/null
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if [ $? -ne 0 ]; then
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echo_error "Please, install \"$1\""
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exit $error_code
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fi
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increment_error_code
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}
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function check_internet_connection {
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curl --silent --head ${curl_interface} --request GET "https://${api_domain}" | grep "200 OK" > /dev/null
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if [ $? -ne 0 ]; then
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echo_error "No internet connection."
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exit $error_code
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fi
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increment_error_code
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}
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require_command curl
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require_command ping
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check_internet_connection
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if command -v jq &> /dev/null; then
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jq_exists=1
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else
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jq_exists=0
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fi
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if hash shuf 2>/dev/null; then
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id=$(shuf -i 1000000-9999999 -n 1)
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else
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id=$(jot -w %i -r 1 1000000 9999999)
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fi
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for i in $(seq 1 10); do
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ping -c 1 ${ping_interface} "${i}.${id}.${api_domain}" > /dev/null 2>&1
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done
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function print_servers {
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if (( $jq_exists )); then
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echo ${result_json} | \
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jq --monochrome-output \
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--raw-output \
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".[] | select(.type == \"${1}\") | \"\(.ip)\(if .country_name != \"\" and .country_name != false then \" [\(.country_name)\(if .asn != \"\" and .asn != false then \" \(.asn)\" else \"\" end)]\" else \"\" end)\""
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else
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while IFS= read -r line; do
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if [[ "$line" != *${1} ]]; then
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continue
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fi
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ip=$(echo $line | cut -d'|' -f 1)
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code=$(echo $line | cut -d'|' -f 2)
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country=$(echo $line | cut -d'|' -f 3)
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asn=$(echo $line | cut -d'|' -f 4)
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if [ -z "${ip// }" ]; then
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continue
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fi
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if [ -z "${country// }" ]; then
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echo "$ip"
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else
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if [ -z "${asn// }" ]; then
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echo "$ip [$country]"
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else
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echo "$ip [$country, $asn]"
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fi
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fi
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done <<< "$result_txt"
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fi
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}
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if (( $jq_exists )); then
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result_json=$(curl ${curl_interface} --silent "https://${api_domain}/dnsleak/test/${id}?json")
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else
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result_txt=$(curl ${curl_interface} --silent "https://${api_domain}/dnsleak/test/${id}?txt")
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fi
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dns_count=$(print_servers "dns" | wc -l)
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echo_bold "Your IP:"
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print_servers "ip"
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echo ""
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if [ ${dns_count} -eq "0" ];then
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echo_bold "No DNS servers found"
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else
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if [ ${dns_count} -eq "1" ];then
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echo_bold "You use ${dns_count} DNS server:"
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else
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echo_bold "You use ${dns_count} DNS servers:"
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fi
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print_servers "dns"
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fi
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echo ""
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echo_bold "Conclusion:"
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print_servers "conclusion"
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exit 0 |