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#!/usr/bin/python3
# Copyright (C) 2013-2021 Daniel Baumann <daniel@debian.org>
#
# SPDX-License-Identifier: GPL-3.0+
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Dependencies:
# sudo apt install iputils-ping traceroute whois nmap testssl.sh geoip-bin geoip-database knot-dnsutils
from cgi import FieldStorage
from datetime import datetime
import ipaddress
from os import getenv
from subprocess import Popen, PIPE
from sys import exit
def filter_nameservers(servers, protocol):
nameservers= []
for server in servers:
name = server.rstrip().rstrip('.')
if protocol == 'ipv6-only':
command = 'kdig -6'
options = ' -t AAAA +short -q '
elif protocol == 'ipv4-only':
command = 'kdig -4'
options = ' -t A +short -q '
else:
command = 'kdig'
options = ' +short -q '
command_line = (command + options + name).split()
kdig = Popen(command_line, stdout=PIPE)
address = kdig.stdout.readline()
if address:
nameservers.append(name)
return nameservers
def get_nameserver(name, protocol):
nameservers = []
if protocol == 'ipv6-only':
command = 'kdig -6'
elif protocol == 'ipv4-only':
command = 'kdig -4'
else:
command = 'kdig'
options = ' -t NS +short -q '
command_line = (command + options + name).split()
kdig = Popen(command_line, stdout=PIPE)
servers = kdig.stdout.readlines()
count = 0
while not servers and count < 10:
name = name.split('.')
del name[0]
name = '.'.join(name)
command_line = (command + options + name).split()
kdig = Popen(command_line, stdout=PIPE)
servers = kdig.stdout.readlines()
count += 1
names = []
for server in servers:
name = server.rstrip().decode('utf-8').rstrip('.')
names.append(name)
nameservers = filter_nameservers(names, protocol)
return nameservers
def run_command(command):
process = Popen(command, stdout=PIPE)
empty_lines = 0
while True:
line = process.stdout.readline().rstrip()
if not line:
empty_lines = empty_lines + 1
if empty_lines > 2:
break
else:
print()
else:
empty_lines = 0
yield line.decode('utf-8')
def main():
form = FieldStorage()
if form.getvalue("command"):
Command = form.getvalue("command").split()[0]
if "target" in form:
Target = form.getvalue("target").split()[0]
if "protocol" in form:
Protocol = form.getvalue("protocol").split()[0]
if "query" in form:
Query = form.getvalue("query").split()[0]
if Command and Protocol and Target:
print('Content-Type: text/html\n')
Date = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
if Command == 'kdig':
if Protocol == 'ipv6-only':
options = ' -6'
elif Protocol == 'ipv4-only':
options = ' -4'
else:
options = ''
if Query == 'PTR':
arpa = ipaddress.ip_address(Target).reverse_pointer
nameserver = get_nameserver(arpa, Protocol)
protocol_passed = False
for server in nameserver:
check_options = options + ' @' + server + ' -t ' + Query + ' -q '
command_line = (Command + ' +short' + check_options + arpa).split()
kdig = Popen(command_line, stdout=PIPE)
protocol_check = kdig.stdout.readline()
if protocol_check:
protocol_passed = True
break
if not protocol_passed:
print('IPv6-only query but no IPv6 enabled nameserver available for ' + Target + '\n\n')
print('--')
print('Run: ' + str(command_line))
print('Date: ' + Date)
exit(0)
options = options + ' @' + server + ' -x '
else:
nameserver = get_nameserver(Target, Protocol)
protocol_passed = False
for server in nameserver:
check_options = options + ' @' + server + ' -t ' + Query + ' -q '
command_line = (Command + ' +short' + check_options + Target).split()
kdig = Popen(command_line, stdout=PIPE)
protocol_check = kdig.stdout.readline()
if protocol_check:
protocol_passed = True
break
if not protocol_passed:
print('IPv6-only query but no IPv6 enabled nameserver available for ' + Target + '\n\n')
print('--')
print('Run: ' + str(command_line))
print('Date: ' + Date)
exit(0)
options = options + ' @' + server + ' -t ' + Query + ' -q '
elif Command == 'ping':
if Protocol == 'ipv6-only':
options = ' -6'
elif Protocol == 'ipv4-only':
options = ' -4'
else:
options = ''
options = options + ' -c3 '
elif Command == 'traceroute':
if Protocol == 'ipv6-only':
options = ' -6'
elif Protocol == 'ipv4-only':
options = ' -4'
else:
options = ''
options = options + ' '
elif Command == 'tcptraceroute':
Command = 'traceroute'
if Protocol == 'ipv6-only':
options = ' -6'
elif Protocol == 'ipv4-only':
options = ' -4'
else:
options = ''
options = options + ' -T '
elif Command == 'nmap':
if Protocol == 'ipv6-only':
options = ' -6'
else:
options = ' '
#-O -T5
elif Command == 'testssl':
options = ' --color 0 '
elif Command == 'whois':
options = ' -H '
else:
options = ' '
if Command == 'my-ip':
command_line = ''
ip_address = getenv('REMOTE_ADDR')
print('IP address: ' + ip_address)
# TODO: show reverse DNS
if ':' in ip_address:
print('IP version: IPv6')
process = Popen(['geoiplookup6', ip_address], stdout=PIPE)
else:
print('IP version: IPv4')
process = Popen(['geoiplookup', ip_address], stdout=PIPE)
geoiplookup = process.stdout.readline().rstrip()
country = geoiplookup.decode('utf-8').split(':')[1]
print('Country:' + country + '\n\n')
elif Command == 'my-browser':
command_line = ''
print('User-Agent: ' + getenv('HTTP_USER_AGENT', 'n/a') + '\n\n')
else:
command_line = Command + options + Target
for path in run_command(command_line.split()):
print(path)
print('--')
print('Date: ' + Date)
if command_line:
print('Run: ' + command_line)
exit(0)
if __name__ == '__main__':
main()
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