Clean up and optimise Gravity

* Shellcheck validation
* Made variable names, function names, comments and output clearer to understand
* Quoted and braced variables and conditionals
* Fix adlists.list handling logic, and remove any CR line endings
* Make CP/MV/RM provide user-friendly output upon failure
* Change adlists.list retrieval logic
* Moved and fixed adlists.list domain parsing logic
* Create gravity_ParseFileAsDomains() function to handle parsing of source files
* If no changes to a list is detected, print no output
* Ensure each source blocklist has a final newline
* Format number output as currency
* Make array of adlists domain sources unique to prevent redundant whitelisting
* Merged bash IPv4/IPv6 hosts formatting IF statement into an awk one-liner
* Trap Ctrl-C cancellations and run gravity_Cleanup()
* Use new gravity_Cleanup() function on errors and script completion
* Ensure that dnsmasq uses force-reload when gravity is invoked
* Add --wildcard option to ensure dnsmasq is restarted upon b/wlisting of a wildcard

Signed-off-by: WaLLy3K <wally3k@pi-hole.net>
This commit is contained in:
WaLLy3K 2017-07-24 21:24:34 +10:00 committed by GitHub
parent 0a062d26e6
commit 6830b08723

View file

@ -1,18 +1,66 @@
#!/usr/bin/env bash
# shellcheck disable=SC1090
# Pi-hole: A black hole for Internet advertisements
# (c) 2017 Pi-hole, LLC (https://pi-hole.net)
# Network-wide ad blocking via your own hardware.
#
# Usage: "pihole -g"
# Compiles a list of ad-serving domains by downloading them from multiple sources
#
# This file is copyright under the latest version of the EUPL.
# Please see LICENSE file for your rights under this license.
# Run this script as root or under sudo
coltable="/opt/pihole/COL_TABLE"
source ${coltable}
basename="pihole"
PIHOLE_COMMAND="/usr/local/bin/${basename}"
WHITELIST_COMMAND="${PIHOLE_COMMAND} -w"
piholeDir="/etc/${basename}"
piholeRepo="/etc/.${basename}"
adListFile="${piholeDir}/adlists.list"
adListDefault="${piholeDir}/adlists.default"
adListRepoDefault="${piholeRepo}/adlists.default"
whitelistFile="${piholeDir}/whitelist.txt"
blacklistFile="${piholeDir}/blacklist.txt"
wildcardFile="/etc/dnsmasq.d/03-pihole-wildcard.conf"
adList="${piholeDir}/gravity.list"
blackList="${piholeDir}/black.list"
localList="${piholeDir}/local.list"
domainsExtension="domains"
matterAndLight="${basename}.0.matterandlight.txt"
supernova="${basename}.1.supernova.txt"
preEventHorizon="list.preEventHorizon"
eventHorizon="${basename}.2.supernova.txt"
accretionDisc="${basename}.3.accretionDisc.txt"
skipDownload="false"
# Source setupVars from install script
setupVars="${piholeDir}/setupVars.conf"
if [[ -f "${setupVars}" ]];then
source "${setupVars}"
# Remove CIDR mask from IPv4/6 addresses
IPV4_ADDRESS="${IPV4_ADDRESS%/*}"
IPV6_ADDRESS="${IPV6_ADDRESS%/*}"
else
echo -e " ${COL_LIGHT_RED}Installation Failure: ${setupVars} does not exist! ${COL_NC}
Please run 'pihole -r', and choose the 'reconfigure' option to fix."
exit 1
fi
# Warn users still using pihole.conf that it no longer has any effect
if [[ -r "${piholeDir}/pihole.conf" ]]; then
echo -e " ${COL_LIGHT_RED}Ignoring overrides specified within pihole.conf! ${COL_NC}"
fi
helpFunc() {
echo "Usage: pihole -g
Update domains from blocklists specified in adlists.list
@ -23,267 +71,307 @@ Options:
exit 0
}
PIHOLE_COMMAND="/usr/local/bin/pihole"
adListFile=/etc/pihole/adlists.list
adListDefault=/etc/pihole/adlists.default # Deprecated
adListRepoDefault=/etc/.pihole/adlists.default
whitelistScript="${PIHOLE_COMMAND} -w"
whitelistFile=/etc/pihole/whitelist.txt
blacklistFile=/etc/pihole/blacklist.txt
readonly wildcardlist="/etc/dnsmasq.d/03-pihole-wildcard.conf"
# Source the setupVars from install script for the IP
setupVars=/etc/pihole/setupVars.conf
if [[ -f "${setupVars}" ]];then
. /etc/pihole/setupVars.conf
else
echo -e " ${COL_LIGHT_RED}Error: /etc/pihole/setupVars.conf missing. Possible installation failure.${COL_NC}
Please run 'pihole -r', and choose the 'reconfigure' option to reconfigure."
exit 1
fi
# Remove the /* from the end of the IP addresses
IPV4_ADDRESS=${IPV4_ADDRESS%/*}
IPV6_ADDRESS=${IPV6_ADDRESS%/*}
# Variables for various stages of downloading and formatting the list
basename=pihole
piholeDir=/etc/${basename}
adList=${piholeDir}/gravity.list
blackList=${piholeDir}/black.list
localList=${piholeDir}/local.list
justDomainsExtension=domains
matterAndLight=${basename}.0.matterandlight.txt
supernova=${basename}.1.supernova.txt
preEventHorizon=list.preEventHorizon
eventHorizon=${basename}.2.supernova.txt
accretionDisc=${basename}.3.accretionDisc.txt
skipDownload=false
# Warn users still using pihole.conf that it no longer has any effect
if [[ -r ${piholeDir}/pihole.conf ]]; then
echo -e " ${COL_LIGHT_RED}pihole.conf file no longer supported. Overrides in this file are ignored.${COL_NC}"
fi
###########################
# Collapse - begin formation of pihole
gravity_collapse() {
#New Logic:
# Does /etc/pihole/adlists.list exist? If so leave it alone
# If not, cp /etc/.pihole/adlists.default /etc/pihole/adlists.list
# Read from adlists.list
# The following two blocks will sort out any missing adlists in the /etc/pihole directory, and remove legacy adlists.default
if [[ -f "${adListDefault}" ]] && [[ -f "${adListFile}" ]]; then
rm "${adListDefault}"
fi
if [ ! -f "${adListFile}" ]; then
cp "${adListRepoDefault}" "${adListFile}"
fi
# Retrieve blocklist URLs from adlists.list
gravity_Collapse() {
echo -e " ${INFO} Neutrino emissions detected..."
echo ""
local str="Pulling source lists into range"
# Handle "adlists.list" and "adlists.default" files
if [[ -f "${adListDefault}" ]] && [[ -f "${adListFile}" ]]; then
# Remove superceded $adListDefault file
rm "${adListDefault}" 2> /dev/null || \
echo -e " ${CROSS} Unable to remove ${adListDefault}"
elif [[ ! -f "${adListFile}" ]]; then
# Create "adlists.list"
cp "${adListRepoDefault}" "${adListFile}" 2> /dev/null || \
echo -e " ${CROSS} Unable to copy ${adListFile##*/} from ${piholeRepo}"
fi
local str="Pulling blocklist source list into range"
echo -ne " ${INFO} ${str}..."
sources=()
while IFS= read -r line || [[ -n "$line" ]]; do
# Do not read commented out or blank lines
if [[ ${line} = \#* ]] || [[ ! ${line} ]]; then
echo "" > /dev/null
else
sources+=(${line})
fi
done < ${adListFile}
# Retrieve source URLs from $adListFile
# Logic: Remove comments, CR line endings and empty lines
mapfile -t sources < <(awk '!/^[#@;!\[]/ {gsub(/\r$/, "", $0); if ($1) { print $1 } }' "${adListFile}" 2> /dev/null)
echo -e "${OVER} ${TICK} ${str}"
# Parse source domains from $sources
# Logic: Split by folder/port and remove URL protocol/password
mapfile -t sourceDomains < <(
awk -F '[/:]' '{
gsub(/(.*:\/\/|.*:.*@)/, "", $0)
print $1
}' <<< "$(printf '%s\n' "${sources[@]}")" 2> /dev/null
)
if [[ -n "${sources[*]}" ]] || [[ -n "${sourceDomains[*]}" ]]; then
echo -e "${OVER} ${TICK} ${str}"
else
echo -e "${OVER} ${CROSS} ${str}"
gravity_Cleanup "error"
fi
}
# patternCheck - check to see if curl downloaded any new files.
gravity_patternCheck() {
patternBuffer=$1
success=$2
error=$3
if [[ "${success}" = true ]]; then
# Check if download was successful but list has not been modified
if [[ "${error}" == "304" ]]; then
echo -e " ${TICK} No changes detected, transport skipped!"
# Check if the patternbuffer is a non-zero length file
elif [[ -s "${patternBuffer}" ]]; then
# Some blocklists are copyright, they need to be downloaded and stored
# as is. They can be processed for content after they have been saved.
mv "${patternBuffer}" "${saveLocation}"
echo -e " ${TICK} List updated, transport successful!"
else
# Empty file -> use previously downloaded list
echo -e " ${INFO} Received empty file, ${COL_LIGHT_GREEN}using cached one${COL_NC} (list not updated!)"
fi
# Parse source file into domains-only format
gravity_ParseFileAsDomains() {
local source destination hostsFilter firstLine abpFilter
source="${1}"
destination="${2}"
# Determine how to parse source file
if [[ "${source}" == "${piholeDir}/${matterAndLight}" ]]; then
# Symbols used as comments: "#;@![/"
commentPattern="[#;@![\\/]"
# Parse consolidated file by removing comments and hosts IP's
# Logic: Process lines which do not begin with comments
awk '!/^'"${commentPattern}"'/ {
# If there are multiple words seperated by space
if (NF>1) {
# Remove comments (Inc. prefixed spaces/tabs)
if ($0 ~ /'"${commentPattern}"'/) { gsub("( | )'"${commentPattern}"'.*", "", $0) }
# Print consecutive domains
if ($3) {
$1=""
gsub("^ ", "", $0)
print $0
# Print single domain
} else if ($2) {
print $2
}
# Print single domain
} else if($1) {
print $1
}
}' "${source}" 2> /dev/null > "${destination}"
else
# Check if cached list exists
if [[ -r "${saveLocation}" ]]; then
echo -e " ${CROSS} List download failed, using cached list (list not updated!)"
# Individual file parsing
# Logic: comments are kept, and domains are extracted from each line
read -r firstLine < "${source}"
# Determine how to parse individual source file
if [[ "${firstLine,,}" =~ "adblock" ]] || [[ "${firstLine,,}" =~ "ublock" ]] || [[ "${firstLine,,}" =~ "! checksum" ]]; then
# Parse Adblock domains & comments: https://adblockplus.org/filter-cheatsheet
abpFilter="/^(\\[|!)|^(\\|\\|.*\\^)/"
awk ''"${abpFilter}"' {
# Remove valid adblock type options
gsub(/~?(important|third-party|popup|subdocument|websocket),?/, "", $0)
# Remove starting domain name anchor "||" and ending seperator "^$" ($ optional)
gsub(/(\|\||\^\$?$)/, "", $0)
# Remove lines which are only IPv4 addresses or contain "^/*"
if ($0 ~ /(^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$|[\\^\/\*])/) { $0="" }
# Print if not empty
if ($0) { print $0 }
}' "${source}" 2> /dev/null > "${destination}"
echo -e " ${TICK} Format: Adblock"
elif grep -q -E "^(https?://|([0-9]{1,3}\.){3}[0-9]{1,3}$)" "${source}" &> /dev/null; then
# Parse URLs
awk '{
# Remove URL protocol, optional "username:password@", and ":?/;"
if ($0 ~ /[:?\/;]/) { gsub(/(^.*:\/\/(.*:.*@)?|[:?\/;].*)/, "", $0) }
# Remove lines which are only IPv4 addresses
if ($0 ~ /^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/) { $0="" }
if ($0) { print $0 }
}' "${source}" 2> /dev/null > "${destination}"
echo -e " ${TICK} Format: URL"
else
echo -e " ${CROSS} Download failed and no cached list available (list will not be considered)"
# Keep hosts/domains file in same format as it was downloaded
output=$( { mv "${source}" "${destination}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e " ${CROSS} Unable to move tmp file to ${piholeDir}
${output}"
gravity_Cleanup "error"
fi
fi
fi
}
# transport - curl the specified url with any needed command extentions
gravity_transport() {
url=$1
cmd_ext=$2
agent=$3
# Determine output based on gravity_Transport() status
gravity_AdvancedTransport() {
local patternBuffer success error output status
patternBuffer="${1}"
success="${2}"
error="${3}"
# tmp file, so we don't have to store the (long!) lists in RAM
if [[ "${success}" = true ]]; then
if [[ "${error}" == "304" ]]; then
: # Print no output
# Check if the patternbuffer is a non-zero length file
elif [[ -s "${patternBuffer}" ]]; then
# Parse Adblock/URL format blocklists and include comments
# HOSTS format is moved as-is
gravity_ParseFileAsDomains "${patternBuffer}" "${saveLocation}" "1"
else
# Fall back to previously cached list if current $patternBuffer is empty
echo -e " ${INFO} Received empty file: ${COL_LIGHT_GREEN}using previously cached list${COL_NC}"
fi
else
# Determine if cached list exists
if [[ -r "${saveLocation}" ]]; then
echo -e " ${CROSS} List download failed: ${COL_LIGHT_GREEN}using previously cached list${COL_NC}"
else
echo -e " ${CROSS} List download failed: ${COL_LIGHT_RED}no cached list available${COL_NC}"
fi
fi
}
# Curl the specified URL with any necessary command extentions
gravity_Transport() {
local url cmd_ext agent
url="${1}"
cmd_ext="${2}"
agent="${3}"
# Store downloaded content to temp file instead of RAM
patternBuffer=$(mktemp)
heisenbergCompensator=""
if [[ -r ${saveLocation} ]]; then
if [[ -r "${saveLocation}" ]]; then
# If domain has been saved, add file for date check to only download newer
heisenbergCompensator="-z ${saveLocation}"
fi
# Silently curl url
echo -e "${OVER} ${TICK} ${str}"
local str="Status:"
echo -ne " ${INFO} ${str} Pending"
err=$(curl -s -L ${cmd_ext} ${heisenbergCompensator} -w %{http_code} -A "${agent}" ${url} -o ${patternBuffer})
echo -ne " ${INFO} ${str} Pending..."
# shellcheck disable=SC2086
httpCode=$(curl -s -L ${cmd_ext} ${heisenbergCompensator} -w "%{http_code}" -A "${agent}" "${url}" -o "${patternBuffer}" 2> /dev/null)
# Analyze http response
case "$err" in
"200" ) echo -e "${OVER} ${TICK} ${str} Success (OK)"; success=true;;
"304" ) echo -e "${OVER} ${TICK} ${str} Not modified"; success=true;;
"403" ) echo -e "${OVER} ${CROSS} ${str} Forbidden"; success=false;;
"404" ) echo -e "${OVER} ${CROSS} ${str} Not found"; success=false;;
"408" ) echo -e "${OVER} ${CROSS} ${str} Time-out"; success=false;;
"451" ) echo -e "${OVER} ${CROSS} ${str} Unavailable For Legal Reasons"; success=false;;
"521" ) echo -e "${OVER} ${CROSS} ${str} Web Server Is Down (Cloudflare)"; success=false;;
"522" ) echo -e "${OVER} ${CROSS} ${str} Connection Timed Out (Cloudflare)"; success=false;;
"500" ) echo -e "${OVER} ${CROSS} ${str} Internal Server Error"; success=false;;
* ) echo -e "${OVER} ${CROSS} ${str} Status $err"; success=false;;
# Determine "Status:" output based on HTTP response
case "$httpCode" in
"200" ) echo -e "${OVER} ${TICK} ${str} Transport successful"; success=true;;
"304" ) echo -e "${OVER} ${TICK} ${str} No changes detected"; success=true;;
"403" ) echo -e "${OVER} ${CROSS} ${str} Forbidden"; success=false;;
"404" ) echo -e "${OVER} ${CROSS} ${str} Not found"; success=false;;
"408" ) echo -e "${OVER} ${CROSS} ${str} Time-out"; success=false;;
"451" ) echo -e "${OVER} ${CROSS} ${str} Unavailable For Legal Reasons"; success=false;;
"521" ) echo -e "${OVER} ${CROSS} ${str} Web Server Is Down (Cloudflare)"; success=false;;
"522" ) echo -e "${OVER} ${CROSS} ${str} Connection Timed Out (Cloudflare)"; success=false;;
"500" ) echo -e "${OVER} ${CROSS} ${str} Internal Server Error"; success=false;;
* ) echo -e "${OVER} ${CROSS} ${str} Status $httpCode"; success=false;;
esac
# Process result
gravity_patternCheck "${patternBuffer}" "${success}" "${err}"
# Output additional info if success=false
gravity_AdvancedTransport "${patternBuffer}" "${success}" "${httpCode}"
# Delete temp file if it hasn't been moved
# Delete temp file if it has not been moved
if [[ -f "${patternBuffer}" ]]; then
rm "${patternBuffer}"
fi
}
# spinup - main gravity function
gravity_spinup() {
# Define User Agent and options for each blocklist
gravity_Pull() {
local agent url domain cmd_ext str
echo ""
# Loop through domain list. Download each one and remove commented lines (lines beginning with '# 'or '/') and # blank lines
# Loop through $sources to download each one
for ((i = 0; i < "${#sources[@]}"; i++)); do
url=${sources[$i]}
# Get just the domain from the URL
domain=$(cut -d'/' -f3 <<< "${url}")
url="${sources[$i]}"
domain="${sourceDomains[$i]}"
# Save the file as list.#.domain
saveLocation=${piholeDir}/list.${i}.${domain}.${justDomainsExtension}
activeDomains[$i]=${saveLocation}
saveLocation="${piholeDir}/list.${i}.${domain}.${domainsExtension}"
activeDomains[$i]="${saveLocation}"
agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0 Safari/537.36"
# Use a case statement to download lists that need special cURL commands
# to complete properly and reset the user agent when required
# Use a case statement to download lists that need special commands
case "${domain}" in
"pgl.yoyo.org")
cmd_ext="-d mimetype=plaintext -d hostformat=hosts"
;;
# Default is a simple request
*) cmd_ext=""
"pgl.yoyo.org") cmd_ext="-d mimetype=plaintext -d hostformat=hosts";;
*) cmd_ext="";;
esac
if [[ "${skipDownload}" == false ]]; then
local str="Aiming tractor beam at $domain"
echo -ne " ${INFO} ${str}..."
str="Target: $domain (${url##*/})"
echo -e " ${INFO} ${str}"
gravity_Transport "$url" "$cmd_ext" "$agent" "$str"
gravity_transport "$url" "$cmd_ext" "$agent" "$str"
echo ""
fi
done
}
# Schwarzchild - aggregate domains to one list and add blacklisted domains
gravity_Schwarzchild() {
echo ""
# Find all active domains and compile them into one file and remove CRs
local str="Aggregating list of domains"
# Consolidate domains to one list and add blacklisted domains
gravity_Schwarzschild() {
local str lastLine
str="Consolidating blocklists"
echo -ne " ${INFO} ${str}..."
truncate -s 0 ${piholeDir}/${matterAndLight}
# Compile all blacklisted domains into one file and remove CRs
truncate -s 0 "${piholeDir}/${matterAndLight}"
for i in "${activeDomains[@]}"; do
# Only assimilate list if it is available (download might have failed permanently)
if [[ -r "${i}" ]]; then
cat "${i}" | tr -d '\r' >> ${piholeDir}/${matterAndLight}
tr -d '\r' < "${i}" >> "${piholeDir}/${matterAndLight}"
# Ensure each source blocklist has a final newline
lastLine=$(tail -1 "${piholeDir}/${matterAndLight}")
[[ "${#lastLine}" -gt 0 ]] && echo "" >> "${piholeDir}/${matterAndLight}"
fi
done
echo -e "${OVER} ${TICK} ${str}"
}
# Append blacklist entries to eventHorizon if they exist
gravity_Blacklist() {
# Append blacklist entries to eventHorizon if they exist
local numBlacklisted plural str
if [[ -f "${blacklistFile}" ]]; then
numBlacklisted=$(wc -l < "${blacklistFile}")
plural=; [[ "$numBlacklisted" != "1" ]] && plural=s
local str="Exact blocked domain${plural}: $numBlacklisted"
numBlacklisted=$(printf "%'.0f" "$(wc -l < "${blacklistFile}")")
plural=; [[ "${numBlacklisted}" != "1" ]] && plural=s
str="Exact blocked domain${plural}: $numBlacklisted"
echo -e " ${INFO} ${str}"
else
echo -e " ${INFO} Nothing to blacklist!"
fi
}
# Return number of wildcards in output
gravity_Wildcard() {
# Return number of wildcards in output - don't actually handle wildcards
if [[ -f "${wildcardlist}" ]]; then
numWildcards=$(grep -c ^ "${wildcardlist}")
local numWildcards plural
if [[ -f "${wildcardFile}" ]]; then
numWildcards=$(grep -c ^ "${wildcardFile}")
if [[ -n "${IPV4_ADDRESS}" ]] && [[ -n "${IPV6_ADDRESS}" ]];then
let numWildcards/=2
fi
plural=; [[ "$numWildcards" != "1" ]] && plural=s
plural=; [[ "${numWildcards}" != "1" ]] && plural=s
echo -e " ${INFO} Wildcard blocked domain${plural}: $numWildcards"
else
echo -e " ${INFO} No wildcards used!"
fi
}
# Prevent the domains of adlist sources from being blacklisted by other blocklists
gravity_Whitelist() {
local plural str
echo ""
# Prevent our sources from being pulled into the hole
plural=; [[ "${sources[@]}" != "1" ]] && plural=s
local str="Adding adlist source${plural} to the whitelist"
plural=; [[ "${#sources[*]}" != "1" ]] && plural=s
str="Adding blocklist source${plural} to the whitelist"
echo -ne " ${INFO} ${str}..."
urls=()
for url in "${sources[@]}"; do
tmp=$(awk -F '/' '{print $3}' <<< "${url}")
urls=("${urls[@]}" ${tmp})
done
# Create array of unique $sourceDomains
# shellcheck disable=SC2046
read -r -a uniqDomains <<< $(awk '{ if(!a[$1]++) { print $1 } }' <<< "$(printf '%s\n' "${sourceDomains[@]}")")
${WHITELIST_COMMAND} -nr -q "${uniqDomains[*]}" > /dev/null
echo -e "${OVER} ${TICK} ${str}"
# Ensure adlist domains are in whitelist.txt
${whitelistScript} -nr -q "${urls[@]}" > /dev/null
# Check whitelist.txt exists.
# Test existence of whitelist.txt
if [[ -f "${whitelistFile}" ]]; then
# Remove anything in whitelist.txt from the Event Horizon
numWhitelisted=$(wc -l < "${whitelistFile}")
plural=; [[ "$numWhitelisted" != "1" ]] && plural=s
plural=; [[ "${numWhitelisted}" != "1" ]] && plural=s
local str="Whitelisting $numWhitelisted domain${plural}"
echo -ne " ${INFO} ${str}..."
# Print everything from preEventHorizon into eventHorizon EXCEPT domains in whitelist.txt
grep -F -x -v -f ${whitelistFile} ${piholeDir}/${preEventHorizon} > ${piholeDir}/${eventHorizon}
grep -F -x -v -f "${whitelistFile}" "${piholeDir}/${preEventHorizon}" > "${piholeDir}/${eventHorizon}"
echo -e "${OVER} ${TICK} ${str}"
else
@ -291,140 +379,155 @@ gravity_Whitelist() {
fi
}
gravity_unique() {
# Sort and remove duplicates
local str="Removing duplicate domains"
# Sort and remove duplicate blacklisted domains
gravity_Unique() {
local str numberOf
str="Removing duplicate domains"
echo -ne " ${INFO} ${str}..."
sort -u ${piholeDir}/${supernova} > ${piholeDir}/${preEventHorizon}
sort -u "${piholeDir}/${supernova}" > "${piholeDir}/${preEventHorizon}"
echo -e "${OVER} ${TICK} ${str}"
numberOf=$(wc -l < ${piholeDir}/${preEventHorizon})
echo -e " ${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} unique domains trapped in the event horizon."
numberOf=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${preEventHorizon}")")
echo -e " ${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} unique domains trapped in the Event Horizon"
}
gravity_doHostFormat() {
# Check vars from setupVars.conf to see if we're using IPv4, IPv6, Or both.
if [[ -n "${IPV4_ADDRESS}" ]] && [[ -n "${IPV6_ADDRESS}" ]];then
# Both IPv4 and IPv6
awk -v ipv4addr="$IPV4_ADDRESS" -v ipv6addr="$IPV6_ADDRESS" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> "${2}" < "${1}"
elif [[ -n "${IPV4_ADDRESS}" ]] && [[ -z "${IPV6_ADDRESS}" ]];then
# Only IPv4
awk -v ipv4addr="$IPV4_ADDRESS" '{sub(/\r$/,""); print ipv4addr" "$0}' >> "${2}" < "${1}"
elif [[ -z "${IPV4_ADDRESS}" ]] && [[ -n "${IPV6_ADDRESS}" ]];then
# Only IPv6
awk -v ipv6addr="$IPV6_ADDRESS" '{sub(/\r$/,""); print ipv6addr" "$0}' >> "${2}" < "${1}"
elif [[ -z "${IPV4_ADDRESS}" ]] &&[[ -z "${IPV6_ADDRESS}" ]];then
# Parse list of domains into hosts format
gravity_ParseDomainsIntoHosts() {
if [[ -n "${IPV4_ADDRESS}" ]] || [[ -n "${IPV6_ADDRESS}" ]]; then
awk -v ipv4addr="$IPV4_ADDRESS" -v ipv6addr="$IPV6_ADDRESS" \
'{sub(/\r$/,""); if(ipv4addr) { print ipv4addr" "$0; }; if(ipv6addr) { print ipv6addr" "$0; }}' >> "${2}" < "${1}"
else
echo -e "${OVER} ${CROSS} ${str}"
echo -e " ${COL_LIGHT_RED}No IP Values found! Please run 'pihole -r' and choose reconfigure to restore values${COL_NC}"
exit 1
echo -e " ${COL_LIGHT_RED}No IP addresses found! Please run 'pihole -r' to reconfigure${COL_NC}\\n"
gravity_Cleanup "error"
fi
}
gravity_hostFormatLocal() {
# Format domain list as "192.168.x.x domain.com"
# Create "localhost" entries
gravity_ParseLocalDomains() {
if [[ -f "/etc/hostname" ]]; then
hostname=$(< /etc/hostname)
elif [ -x "$(command -v hostname)" ]; then
hostname=$(< "/etc/hostname")
elif command -v hostname &> /dev/null; then
hostname=$(hostname -f)
else
echo -e " ${CROSS} Unable to determine fully qualified domain name of host"
fi
echo -e "${hostname}\npi.hole" > "${localList}.tmp"
echo -e "${hostname}\\npi.hole" > "${localList}.tmp"
# Copy the file over as /etc/pihole/local.list so dnsmasq can use it
rm "${localList}"
gravity_doHostFormat "${localList}.tmp" "${localList}"
rm "${localList}.tmp"
rm "${localList}" 2> /dev/null || \
echo -e " ${CROSS} Unable to remove ${localList}"
gravity_ParseDomainsIntoHosts "${localList}.tmp" "${localList}"
rm "${localList}.tmp" 2> /dev/null || \
echo -e " ${CROSS} Unable to remove ${localList}.tmp"
}
gravity_hostFormatGravity() {
# Format domain list as "192.168.x.x domain.com"
echo "" > "${piholeDir}/${accretionDisc}"
gravity_doHostFormat "${piholeDir}/${eventHorizon}" "${piholeDir}/${accretionDisc}"
# Create primary blacklist entries
gravity_ParseBlacklistDomains() {
# Create $accretionDisc
[[ ! -f "${piholeDir}/${accretionDisc}" ]] && echo "" > "${piholeDir}/${accretionDisc}"
gravity_ParseDomainsIntoHosts "${piholeDir}/${eventHorizon}" "${piholeDir}/${accretionDisc}"
# Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
mv "${piholeDir}/${accretionDisc}" "${adList}"
output=$( { mv "${piholeDir}/${accretionDisc}" "${adList}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e " ${CROSS} Unable to move ${accretionDisc} from ${piholeDir}
${output}"
gravity_Cleanup "error"
fi
}
gravity_hostFormatBlack() {
# Create user-added blacklist entries
gravity_ParseUserDomains() {
if [[ -f "${blacklistFile}" ]]; then
numBlacklisted=$(wc -l < "${blacklistFile}")
# Format domain list as "192.168.x.x domain.com"
gravity_doHostFormat "${blacklistFile}" "${blackList}.tmp"
numBlacklisted=$(printf "%'.0f" "$(wc -l < "${blacklistFile}")")
gravity_ParseDomainsIntoHosts "${blacklistFile}" "${blackList}.tmp"
# Copy the file over as /etc/pihole/black.list so dnsmasq can use it
mv "${blackList}.tmp" "${blackList}"
mv "${blackList}.tmp" "${blackList}" 2> /dev/null || \
echo -e " ${CROSS} Unable to move ${blackList##*/}.tmp to ${piholeDir}"
else
echo -e " ${INFO} Nothing to blacklist!"
fi
}
# blackbody - remove any remnant files from script processes
gravity_blackbody() {
# Loop through list files
for file in ${piholeDir}/*.${justDomainsExtension}; do
# If list is in active array then leave it (noop) else rm the list
if [[ " ${activeDomains[@]} " =~ ${file} ]]; then
:
else
rm -f "${file}"
fi
done
}
gravity_advanced() {
# Remove comments and print only the domain name
# Most of the lists downloaded are already in hosts file format but the spacing/formating is not contigious
# This helps with that and makes it easier to read
# It also helps with debugging so each stage of the script can be researched more in depth
local str="Formatting list of domains to remove comments"
# Parse consolidated blocklist into domains-only format
gravity_Advanced() {
local str="Extracting domains from blocklists"
echo -ne " ${INFO} ${str}..."
#awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' ${piholeDir}/${matterAndLight} | sed -nr -e 's/\.{2,}/./g' -e '/\./p' > ${piholeDir}/${supernova}
#Above line does not correctly grab domains where comment is on the same line (e.g 'addomain.com #comment')
#Awk -F splits on given IFS, we grab the right hand side (chops trailing #coments and /'s to grab the domain only.
#Last awk command takes non-commented lines and if they have 2 fields, take the left field (the domain) and leave
#+ the right (IP address), otherwise grab the single field.
cat ${piholeDir}/${matterAndLight} | \
awk -F '#' '{print $1}' | \
awk -F '/' '{print $1}' | \
awk '($1 !~ /^#/) { if (NF>1) {print $2} else {print $1}}' | \
sed -nr -e 's/\.{2,}/./g' -e '/\./p' > ${piholeDir}/${supernova}
# Parse files as Hosts
gravity_ParseFileAsDomains "${piholeDir}/${matterAndLight}" "${piholeDir}/${supernova}"
echo -e "${OVER} ${TICK} ${str}"
numberOf=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${supernova}")")
echo -e "${OVER} ${TICK} ${str}
${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} domains being pulled in by gravity"
numberOf=$(wc -l < ${piholeDir}/${supernova})
echo -e " ${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} domains being pulled in by gravity"
gravity_unique
gravity_Unique
}
gravity_reload() {
# Reload hosts file
echo ""
local str="Refreshing lists in dnsmasq"
echo -e " ${INFO} ${str}..."
# Trap Ctrl-C
gravity_Trap() {
trap '{ echo -e "\\n\\n ${INFO} ${COL_LIGHT_RED}User-abort detected${COL_NC}"; gravity_Cleanup "error"; }' INT
}
# Ensure /etc/dnsmasq.d/01-pihole.conf is pointing at the correct list!
# First escape forward slashes in the path:
adList=${adList//\//\\\/}
# Now replace the line in dnsmasq file
# sed -i "s/^addn-hosts.*/addn-hosts=$adList/" /etc/dnsmasq.d/01-pihole.conf
# Clean up after Gravity
gravity_Cleanup() {
local error="${1:-}"
"${PIHOLE_COMMAND}" restartdns
str="Cleaning up debris"
echo -ne " ${INFO} ${str}..."
rm ${piholeDir}/pihole.*.txt 2> /dev/null
rm ${piholeDir}/*.tmp 2> /dev/null
# Remove any unused .domains files
for file in ${piholeDir}/*.${domainsExtension}; do
# If list is in active array then leave it (noop) else rm the list
if [[ "${activeDomains[*]}" =~ ${file} ]]; then
:
else
rm -f "${file}" 2> /dev/null || \
echo -e " ${CROSS} Failed to remove ${file##*/}"
fi
done
echo -e "${OVER} ${TICK} ${str}"
[[ -n "$error" ]] && echo ""
# Only restart DNS service if offline
if ! pidof dnsmasq &> /dev/null; then
"${PIHOLE_COMMAND}" restartdns
fi
if [[ -n "$error" ]]; then
"${PIHOLE_COMMAND}" status
exit 1
fi
}
for var in "$@"; do
case "${var}" in
"-f" | "--force" ) forceGrav=true;;
"-h" | "--help" ) helpFunc;;
"-sd" | "--skip-download" ) skipDownload=true;;
"-b" | "--blacklist-only" ) blackListOnly=true;;
"-f" | "--force" ) forceDelete=true;;
"-h" | "--help" ) helpFunc;;
"-sd" | "--skip-download" ) skipDownload=true;;
"-b" | "--blacklist-only" ) blackListOnly=true;;
"-w" | "--wildcard" ) dnsRestart="restart";;
esac
done
if [[ "${forceGrav}" == true ]]; then
# Main Gravity Execution
gravity_Trap
# Use "force-reload" when restarting dnsmasq for Blacklists and Whitelists
[[ -z "${dnsRestart}" ]] && dnsRestart="force-reload"
if [[ "${forceDelete}" == true ]]; then
str="Deleting exising list cache"
echo -ne "${INFO} ${str}..."
@ -435,42 +538,41 @@ if [[ "${forceGrav}" == true ]]; then
fi
fi
# If $blackListOnly is true, only run essential functions
if [[ ! "${blackListOnly}" == true ]]; then
gravity_collapse
gravity_spinup
gravity_Collapse
gravity_Pull
if [[ "${skipDownload}" == false ]]; then
gravity_Schwarzchild
gravity_advanced
gravity_Schwarzschild
gravity_Advanced
else
echo -e " ${INFO} Using cached Event Horizon list..."
numberOf=$(wc -l < ${piholeDir}/${preEventHorizon})
echo -e " ${INFO} ${COL_LIGHT_BLUE}$numberOf${COL_NC} unique domains trapped in the event horizon."
numberOf=$(printf "%'.0f" "$(wc -l < "${piholeDir}/${preEventHorizon}")")
echo -e " ${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} unique domains trapped in the Event Horizon"
fi
gravity_Whitelist
fi
gravity_Blacklist
gravity_Wildcard
str="Formatting domains into a HOSTS file"
str="Parsing domains into hosts format"
echo -ne " ${INFO} ${str}..."
if [[ ! "${blackListOnly}" == true ]]; then
gravity_hostFormatLocal
gravity_hostFormatGravity
gravity_ParseLocalDomains
gravity_ParseBlacklistDomains
fi
gravity_hostFormatBlack
gravity_ParseUserDomains
echo -e "${OVER} ${TICK} ${str}"
gravity_blackbody
if [[ ! "${blackListOnly}" == true ]]; then
# Clear no longer needed files...
str="Cleaning up un-needed files"
echo -ne " ${INFO} ${str}..."
rm ${piholeDir}/pihole.*.txt 2> /dev/null
echo -e "${OVER} ${TICK} ${str}"
gravity_Cleanup
fi
gravity_reload
echo ""
"${PIHOLE_COMMAND}" restartdns "${dnsRestart}"
"${PIHOLE_COMMAND}" status