#!/bin/sh
#
# Copyright (c) 2020 Gregory L. Dietsche <Gregory.Dietsche@cuw.edu>
# This is free software, licensed under the MIT License
#

########################
#Yucky global variables#
########################
global_result=0

# A list of adult websites that support both IPv4 and IPv6
IPv4andIPv6EnabledSiteList="https://xhamster.com https://www.watchmyexgf.net https://gaymaletube.com"

expect_not_safe(){
  title=$1
  size=$2
  web=$3

  actual=$(wget -4 -O - "$web" | wc -l) 2> /dev/null
  if [ "$actual" -gt "$size" ] ; then
    echo "$title: IPv4: $size/$actual. NOT SAFE"
  else
    echo "$title: IPv4: SAFE. $actual (expected not safe!) ***************"
    global_result=1
  fi

  actual=$(wget -6 -O - "$web"  | wc -l) 2> /dev/null
  if [ "$actual" -gt "$size" ] ; then
    echo "$title: IPv6: $size/$actual. NOT SAFE"
  else
    echo "$title: IPv6: SAFE. $actual (expected not safe!) ***************"
    global_result=1
  fi
  return $global_result
}

expect_safe(){
  title=$1
  size=$2
  web=$3

  actual=$(wget -4 -O - "$web" | wc -l) 2> /dev/null
  if [ "$actual" -gt "$size" ] ; then
    echo "$title: IPv4: $size/$actual. NOT SAFE ******************"
    global_result=1
  else
    echo "$title: IPv4: SAFE. $actual"
  fi

  actual=$(wget -6 -O - "$web"  | wc -l) 2> /dev/null
  if [ "$actual" -gt "$size" ] ; then
    echo "$title: IPv6: $size/$actual. NOT SAFE ******************"
    global_result=1
  else
    echo "$title: IPv6: SAFE. $actual"
  fi
}


test_not_safe(){
  uci set family-dns.default.enabled=0
  uci commit family-dns
  family-dns-update

  echo "******************************"
  echo "Testing Without Protection ***"
  echo "******************************"
  c=0
  for site in ${IPv4andIPv6EnabledSiteList}; do
    expect_not_safe "Site $c" 500 "$site"
    c=$((c+1))
  done

  uci set family-dns.default.enabled=1
  uci commit family-dns
  family-dns-update

  echo
}

test_filter(){
  echo "******************************"
  echo "Testing With Protection    ***"
  echo "******************************"
  echo testing "$1"

  uci set family-dns.default.dns="$1"
  uci commit family-dns
  family-dns-update

  c=0
  for site in ${IPv4andIPv6EnabledSiteList}; do
    expect_safe "Testing Site $c" 500 "$site"
    c=$((c+1))
  done

  echo
}

#############################################
## Main Tests                              ##
#############################################
test_not_safe
test_filter cisco-family-shield
test_filter cloudflare-malware-and-adult-content
test_filter cleanbrowsing-family-filter
test_filter cleanbrowsing-adult-filter

# with cleanbrowsing-adult-filter on, run this test on a different device (not the router)
# the result should be 0 when redirect_dns=1 and the result should be 1 when redirect_dns=0
#count=$(nslookup -query=A www.sex.com 8.8.8.8 | grep NXDOMAIN | wc -l)
#if [ $count -eq 1 ]; then
#  echo Clean Browsing returned NXDOMAIN. This is expected.
#else
#  echo Clean Browsing did not return NXDOMAIN. This is NOT expected.
#fi



if [ $global_result -ne 0 ]; then
  echo '************ Test(s) failed! ********************************************************'
fi
exit $global_result