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Aiming to get whitelist.sh to run either standalone or to be called from gravity.sh. Initial commit

This commit is contained in:
Adam Warner 2016-01-15 14:17:55 +00:00
parent 9ff1129510
commit 8ad116fe7b

View File

@ -7,51 +7,154 @@
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
if [[ $# = 0 ]]; then
echo "Immediately whitelists one or more domains in the hosts file"
echo "Usage: whitelist.sh domain1 [domain2 ...]"
exit 1
fi
#globals
whitelist=/etc/pihole/whitelist.txt
adList=/etc/pihole/gravity.list
if [[ ! -f $whitelist ]];then
reload=true
addmode=true
domList=()
domToRemoveList=()
piholeIPfile=/tmp/piholeIP
piholeIPv6file=/etc/pihole/.useIPv6
# Otherwise, the IP address can be taken directly from the machine, which will happen when the script is run by the user and not the installation script
IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
piholeIPCIDR=$(ip -o -f inet addr show dev $IPv4dev | awk '{print $4}' | awk 'END {print}')
piholeIP=${piholeIPCIDR%/*}
modifyHost=false
if [[ -f $piholeIPv6file ]];then
# If the file exists, then the user previously chose to use IPv6 in the automated installer
piholeIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
fi
function HandleOther(){
#check validity of domain
validDomain=$(echo $1 | perl -ne'print if /\b((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}\b/')
if [ -z "$validDomain" ]; then
echo $1 is not a valid argument or domain name
else
domList=("${domList[@]}" $validDomain)
fi
}
function PopWhitelistFile(){
#check whitelist file exists, and if not, create it
if [[ ! -f $whitelist ]];then
touch $whitelist
fi
fi
for dom in "${domList[@]}"
do
if $addmode; then
AddDomain $dom
else
RemoveDomain $dom
fi
done
}
if [[ $# = 0 ]]; then
echo "Immediately whitelists one or more domains."
echo "Usage: whitelist.sh domain1 [domain2 ...]"
fi
function AddDomain(){
#| sed 's/\./\\./g'
bool=false
grep -Ex -q "$1" $whitelist || bool=true
if $bool; then
#domain not found in the whitelist file, add it!
echo "** Adding $1 to whitelist file"
echo $1 >> $whitelist
modifyHost=true
else
echo "** $1 already whitelisted! No need to add"
fi
}
combopattern=""
function RemoveDomain(){
bool=false
grep -Ex -q "$1" $whitelist || bool=true
if $bool; then
#Domain is not in the whitelist file, no need to Remove
echo "** $1 is NOT whitelisted! No need to remove"
else
#Domain is in the whitelist file, add to a temporary array and remove from whitelist file
echo "** Un-whitelisting $dom..."
domToRemoveList=("${domToRemoveList[@]}" $1)
modifyHost=true
fi
}
function ModifyHostFile(){
if $addmode; then
#remove domains in from hosts file
if [[ -r $whitelist ]];then
# Remove whitelist entries
numberOf=$(cat $whitelist | sed '/^\s*$/d' | wc -l)
plural=; [[ "$numberOf" != "1" ]] && plural=s
echo "** Whitelisting a total of $numberOf domain${plural}..."
awk -F':' '{ print $1 }' $whitelist | sed 's/\./\\./g' | xargs -I {} perl -i -ne'print unless /[^.]'{}'(?!.)/;' $adList
fi
else
#we need to add the removed domains to the hosts file
for rdom in "${domToRemoveList[@]}"
do
if [[ -n $piholeIPv6 ]];then
echo "**Blacklisting $rdom on IPv4 and IPv6"
echo $rdom | awk -v ipv4addr="$piholeIP" -v ipv6addr="$piholeIPv6" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> $adList
else
echo "**Blacklisting $rdom on IPv4"
echo $rdom | awk -v ipv4addr="$piholeIP" '{sub(/\r$/,""); print ipv4addr" "$0}' >>$adList
fi
echo $rdom| sed 's/\./\\./g' | xargs -I {} perl -i -ne'print unless /'{}'(?!.)/;' $whitelist
done
fi
}
function Reload() {
# Reload hosts file
echo "** Refresh lists in dnsmasq..."
dnsmasqPid=$(pidof dnsmasq)
if [[ $dnsmasqPid ]]; then
# service already running - reload config
sudo kill -HUP $dnsmasqPid
else
# service not running, start it up
sudo service dnsmasq start
fi
}
###################################################
# For each argument passed to this script
for var in "$@"
do
echo "Whitelisting $var..."
# Construct basic pattern to match domain name.
basicpattern=$(echo $var | awk -F '[# \t]' 'NF>0&&$1!="" {print ""$1""}' | sed 's/\./\\./g')
if [[ "$basicpattern" != "" ]]; then
# Add to the combination pattern that will be used below
if [[ "$combopattern" != "" ]]; then combopattern="$combopattern|"; fi
combopattern="$combopattern$basicpattern"
# Also add the domain to the whitelist but only if it's not already present
grep -E -q "^$basicpattern$" $whitelist \
|| echo "$var" >> $whitelist
fi
case "$var" in
"-nr"| "--noreload" ) reload=false;;
"-d" | "--delmode" ) addmode=false;;
* ) HandleOther $var;;
esac
done
# Now report on and remove matched domains
if [[ "$combopattern" != "" ]]; then
echo "Modifying hosts file..."
PopWhitelistFile
# Construct pattern to match entry in hosts file.
# This consists of one or more IP addresses followed by the domain name.
pattern=$(echo $combopattern | awk -F '[# \t]' '{printf "%s", "^(([0-9]+\.){3}[0-9]+ +)+("$1")$"}')
# Output what will be removed and then actually remove
sed -r -n 's/'"$pattern"'/ Removed: \3/p' $adList
sed -r -i '/'"$pattern"'/d' $adList
echo "** $# domain(s) whitelisted."
# Force dnsmasq to reload /etc/pihole/gravity.list
kill -HUP $(pidof dnsmasq)
if $modifyHost; then
echo "** Modifying Hosts File"
ModifyHostFile
else
echo "** No changes need to be made"
exit 1
fi
if $reload; then
Reload
fi