moparisthebest/pi-hole
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Start code refactor, eliminate some repetitive code

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Begin code refactor prepatation, prevent DRY where possible.
This commit is contained in:
Dan Schaper 2015-11-22 23:49:38 -08:00
parent a7d1b0b42c
commit f02c37ec07
1 changed files with 66 additions and 108 deletions
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174
gravity.sh
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@ -1,11 +1,18 @@
#!/bin/bash #!/usr/bin/env bash
# http://pi-hole.net # http://pi-hole.net
# Compiles a list of ad-serving domains by downloading them from multiple sources # Compiles a list of ad-serving domains by downloading them from multiple sources
piholeIPfile=/tmp/piholeIP
# This script should only be run after you have a static IP address set on the Pi if [[ -f $piholeIPfile ]];then
piholeIP=$(hostname -I) # If the file exists, it means it was exported from the installation script and we should use that value instead of detecting it in this script
piholeIP=$(cat $piholeIPfile)
rm $piholeIPfile
else
# Otherwise, the IP address can be taken directly from the machine, which will happen when the script is run by the user and not the installation script
piholeIP=$(ip -4 addr show | awk '{match($0,/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/); ip = substr($0,RSTART,RLENGTH); print ip}' | sed '/^\s*$/d' | grep -v "127.0.0.1" | (head -n1))
fi
# Ad-list sources--one per line in single quotes # Ad-list sources--one per line in single quotes
# The mahakala source is commented out due to many users having issues with it blocking legitimate domains. Uncomment at your own risk
sources=('https://adaway.org/hosts.txt' sources=('https://adaway.org/hosts.txt'
'http://adblock.gjtech.net/?format=unix-hosts' 'http://adblock.gjtech.net/?format=unix-hosts'
#'http://adblock.mahakala.is/' #'http://adblock.mahakala.is/'
@ -16,139 +23,90 @@ sources=('https://adaway.org/hosts.txt'
'http://winhelp2002.mvps.org/hosts.txt') 'http://winhelp2002.mvps.org/hosts.txt')
# Variables for various stages of downloading and formatting the list # Variables for various stages of downloading and formatting the list
adList=/etc/pihole/gravity.list basename=pihole
origin=/etc/pihole piholeDir=/etc/$basename
piholeDir=/etc/pihole adList=$piholeDir/gravity.list
justDomainsExtension=domains
matter=pihole.0.matter.txt
andLight=pihole.1.andLight.txt
supernova=pihole.2.supernova.txt
eventHorizon=pihole.3.eventHorizon.txt
accretionDisc=pihole.4.accretionDisc.txt
eyeOfTheNeedle=pihole.5.wormhole.txt
blacklist=$piholeDir/blacklist.txt blacklist=$piholeDir/blacklist.txt
whitelist=$piholeDir/whitelist.txt whitelist=$piholeDir/whitelist.txt
latentWhitelist=$origin/latentWhitelist.txt latentWhitelist=$piholeDir/latentWhitelist.txt
justDomainsExtension=domains
matter=$basename.0.matter.txt
andLight=$basename.1.andLight.txt
supernova=$basename.2.supernova.txt
eventHorizon=$basename.3.eventHorizon.txt
accretionDisc=$basename.4.accretionDisc.txt
eyeOfTheNeedle=$basename.5.wormhole.txt
# After setting defaults, check if there's local overrides # After setting defaults, check if there's local overrides
if [[ -r $piholeDir/pihole.conf ]];then if [[ -r $piholeDir/pihole.conf ]];then
echo "** Local calibration requested..." echo "** Local calibration requested..."
. $piholeDir/pihole.conf . $piholeDir/pihole.conf
fi fi
echo "** Neutrino emissions detected..." echo "** Neutrino emissions detected..."
# Create the pihole resource directory if it doesn't exist. Future files will be stored here # Create the pihole resource directory if it doesn't exist. Future files will be stored here
if [[ -d $piholeDir ]];then if [[ -d $piholeDir ]];then
: :
else else
echo "** Creating pihole directory..." echo "** Creating pihole directory..."
sudo mkdir $piholeDir sudo mkdir $piholeDir
fi fi
# Loop through domain list. Download each one and remove commented lines (lines beginning with '# 'or '/') and blank lines # Loop through domain list. Download each one and remove commented lines (lines beginning with '# 'or '/') and blank lines
for ((i = 0; i < "${#sources[@]}"; i++)) for ((i = 0; i < "${#sources[@]}"; i++))
do do
url=${sources[$i]} url=${sources[$i]}
# Get just the domain from the URL # Get just the domain from the URL
domain=$(echo "$url" | cut -d'/' -f3) domain=$(echo "$url" | cut -d'/' -f3)
# Save the file as list.#.domain # Save the file as list.#.domain
saveLocation=$origin/list.$i.$domain.$justDomainsExtension saveLocation=$piholeDir/list.$i.$domain.$justDomainsExtension
agent="Mozilla/10.0" agent="Mozilla/10.0"
echo -n "Getting $domain list... " echo -n "Getting $domain list... "
# Use a case statement to download lists that need special cURL commands # Use a case statement to download lists that need special cURL commands
# to complete properly and reset the user agent when required # to complete properly and reset the user agent when required
case "$domain" in case "$domain" in
"adblock.mahakala.is") "adblock.mahakala.is")
agent='Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0' agent='Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0'
cmd="curl -e http://forum.xda-developers.com/" cmd_ext="-e http://forum.xda-developers.com/"
;; ;;
"pgl.yoyo.org") "pgl.yoyo.org")
cmd="curl -d mimetype=plaintext -d hostformat=hosts" echo "** $numberOf domains being pulled in by gravity..."
;;
# Default is a simple curl request # Remove carriage returns and preceding whitespace
*) cmd="curl" # not really needed anymore?
esac cp $piholeDir/$andLight $piholeDir/$supernova
# tmp file, so we don't have to store the (long!) lists in RAM # Sort and remove duplicates
patternBuffer=$(mktemp) sort -u $piholeDir/$supernova > $piholeDir/$eventHorizon
heisenbergCompensator="" numberOf=$(wc -l < $piholeDir/$eventHorizon)
if [[ -r $saveLocation ]]; then echo "** $numberOf unique domains trapped in the event horizon."
heisenbergCompensator="-z $saveLocation"
fi
CMD="$cmd -s $heisenbergCompensator -A '$agent' $url > $patternBuffer"
$cmd -s $heisenbergCompensator -A "$agent" $url > $patternBuffer
# Format domain list as "192.168.x.x domain.com"
if [[ -s "$patternBuffer" ]];then echo "** Formatting domains into a HOSTS file..."
# Remove comments and print only the domain name cat $piholeDir/$eventHorizon | awk '{sub(/\r$/,""); print "'"$piholeIP"' " $0}' > $piholeDir/$accretionDisc
# Most of the lists downloaded are already in hosts file format but the spacing/formating is not contigious # Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
# This helps with that and makes it easier to read sudo cp $piholeDir/$accretionDisc $adList
# It also helps with debugging so each stage of the script can be researched more in depth kill -HUP $(pidof dnsmasq)
awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' $patternBuffer | \
sed -nr -e 's/\.{2,}/./g' -e '/\./p' > $saveLocation
echo "Done."
else
echo "Skipping pattern because transporter logic detected no changes..."
fi
# Cleanup
rm -f $patternBuffer
done
# Find all files with the .domains extension and compile them into one file and remove CRs
echo "** Aggregating list of domains..."
find $origin/ -type f -name "*.$justDomainsExtension" -exec cat {} \; | tr -d '\r' > $origin/$matter
# Append blacklist entries if they exist
if [[ -r $blacklist ]];then
numberOf=$(cat $blacklist | sed '/^\s*$/d' | wc -l)
echo "** Blacklisting $numberOf domain(s)..."
cat $blacklist >> $origin/$matter
fi
###########################
function gravity_advanced() {
numberOf=$(wc -l < $origin/$andLight)
echo "** $numberOf domains being pulled in by gravity..."
# Remove carriage returns and preceding whitespace
# not really needed anymore?
cp $origin/$andLight $origin/$supernova
# Sort and remove duplicates
sort -u $origin/$supernova > $origin/$eventHorizon
numberOf=$(wc -l < $origin/$eventHorizon)
echo "** $numberOf unique domains trapped in the event horizon."
# Format domain list as "192.168.x.x domain.com"
echo "** Formatting domains into a HOSTS file..."
awk '{print "'"$piholeIP"'" $1}' $origin/$eventHorizon > $origin/$accretionDisc
# Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
sudo cp $origin/$accretionDisc $adList
kill -HUP $(pidof dnsmasq)
} }
# Whitelist (if applicable) then remove duplicates and format for dnsmasq # Whitelist (if applicable) then remove duplicates and format for dnsmasq
if [[ -r $whitelist ]];then if [[ -r $whitelist ]];then
# Remove whitelist entries # Remove whitelist entries
numberOf=$(cat $whitelist | sed '/^\s*$/d' | wc -l) numberOf=$(cat $whitelist | sed '/^\s*$/d' | wc -l)
plural=; [[ "$numberOf" != "1" ]] && plural=s plural=; [[ "$numberOf" != "1" ]] && plural=s
echo "** Whitelisting $numberOf domain${plural}..." echo "** Whitelisting $numberOf domain${plural}..."
# Append a "$" to the end, prepend a "^" to the beginning, and # Append a "$" to the end, prepend a "^" to the beginning, and
# replace "." with "\." of each line to turn each entry into a # replace "." with "\." of each line to turn each entry into a
# regexp so it can be parsed out with grep -x # regexp so it can be parsed out with grep -x
awk -F '[# \t]' 'NF>0&&$1!="" {print "^"$1"$"}' $whitelist | sed 's/\./\\./g' > $latentWhitelist awk -F '[# \t]' 'NF>0&&$1!="" {print "^"$1"$"}' $whitelist | sed 's/\./\\./g' > $latentWhitelist
else else
rm $latentWhitelist rm $latentWhitelist
fi fi
# Prevent our sources from being pulled into the hole # Prevent our sources from being pulled into the hole
@ -156,10 +114,10 @@ plural=; [[ "${#sources[@]}" != "1" ]] && plural=s
echo "** Whitelisting ${#sources[@]} ad list source${plural}..." echo "** Whitelisting ${#sources[@]} ad list source${plural}..."
for url in ${sources[@]} for url in ${sources[@]}
do do
echo "$url" | awk -F '/' '{print "^"$3"$"}' | sed 's/\./\\./g' >> $latentWhitelist echo "$url" | awk -F '/' '{print "^"$3"$"}' | sed 's/\./\\./g' >> $latentWhitelist
done done
# Remove whitelist entries from deduped list # Remove whitelist entries from deduped list
grep -vxf $latentWhitelist $origin/$matter > $origin/$andLight grep -vxf $latentWhitelist $piholeDir/$matter > $piholeDir/$andLight
gravity_advanced gravity_advanced