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@jpgpi250
Latest commit 052a1f2 Apr 20, 2022 History
Co-authored-by: yubiuser <ckoenig@posteo.de>
56 contributors

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@DL6ER @PromoFaux @jacobsalmela @dschaper @AzureMarker @WaLLy3K @yubiuser @korhadris @tuplink @rmceoin @jpgpi250 @pvogt09
executable file 1030 lines (891 sloc) 37.2 KB
#!/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.
export LC_ALL=C
coltable="/opt/pihole/COL_TABLE"
source "${coltable}"
# shellcheck disable=SC1091
source "/etc/.pihole/advanced/Scripts/database_migration/gravity-db.sh"
basename="pihole"
PIHOLE_COMMAND="/usr/local/bin/${basename}"
piholeDir="/etc/${basename}"
# Legacy (pre v5.0) list file locations
whitelistFile="${piholeDir}/whitelist.txt"
blacklistFile="${piholeDir}/blacklist.txt"
regexFile="${piholeDir}/regex.list"
adListFile="${piholeDir}/adlists.list"
localList="${piholeDir}/local.list"
VPNList="/etc/openvpn/ipp.txt"
piholeGitDir="/etc/.pihole"
gravityDBfile_default="${piholeDir}/gravity.db"
# GRAVITYDB may be overwritten by source pihole-FTL.conf below
GRAVITYDB="${gravityDBfile_default}"
gravityDBschema="${piholeGitDir}/advanced/Templates/gravity.db.sql"
gravityDBcopy="${piholeGitDir}/advanced/Templates/gravity_copy.sql"
domainsExtension="domains"
# Source setupVars from install script
setupVars="${piholeDir}/setupVars.conf"
if [[ -f "${setupVars}" ]];then
source "${setupVars}"
else
echo -e " ${COL_LIGHT_RED}Installation Failure: ${setupVars} does not exist! ${COL_NC}
Please run 'pihole -r', and choose the 'reconfigure' option to fix."
exit 1
fi
# Source pihole-FTL from install script
pihole_FTL="${piholeDir}/pihole-FTL.conf"
if [[ -f "${pihole_FTL}" ]]; then
source "${pihole_FTL}"
fi
# Set this only after sourcing pihole-FTL.conf as the gravity database path may
# have changed
gravityDBfile="${GRAVITYDB}"
gravityTEMPfile="${GRAVITYDB}_temp"
gravityDIR="$(dirname -- "${gravityDBfile}")"
gravityOLDfile="${gravityDIR}/gravity_old.db"
if [[ -z "${BLOCKINGMODE}" ]] ; then
BLOCKINGMODE="NULL"
fi
# Determine if superseded pihole.conf exists
if [[ -r "${piholeDir}/pihole.conf" ]]; then
echo -e " ${COL_LIGHT_RED}Ignoring overrides specified within pihole.conf! ${COL_NC}"
fi
# Generate new SQLite3 file from schema template
generate_gravity_database() {
if ! pihole-FTL sqlite3 "${gravityDBfile}" < "${gravityDBschema}"; then
echo -e " ${CROSS} Unable to create ${gravityDBfile}"
return 1
fi
chown pihole:pihole "${gravityDBfile}"
chmod g+w "${piholeDir}" "${gravityDBfile}"
}
# Copy data from old to new database file and swap them
gravity_swap_databases() {
local str copyGravity oldAvail
str="Building tree"
echo -ne " ${INFO} ${str}..."
# The index is intentionally not UNIQUE as poor quality adlists may contain domains more than once
output=$( { pihole-FTL sqlite3 "${gravityTEMPfile}" "CREATE INDEX idx_gravity ON gravity (domain, adlist_id);"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to build gravity tree in ${gravityTEMPfile}\\n ${output}"
return 1
fi
echo -e "${OVER} ${TICK} ${str}"
str="Swapping databases"
echo -ne " ${INFO} ${str}..."
# Swap databases and remove or conditionally rename old database
# Number of available blocks on disk
availableBlocks=$(stat -f --format "%a" "${gravityDIR}")
# Number of blocks, used by gravity.db
gravityBlocks=$(stat --format "%b" ${gravityDBfile})
# Only keep the old database if available disk space is at least twice the size of the existing gravity.db.
# Better be safe than sorry...
oldAvail=false
if [ "${availableBlocks}" -gt "$((gravityBlocks * 2))" ] && [ -f "${gravityDBfile}" ]; then
oldAvail=true
mv "${gravityDBfile}" "${gravityOLDfile}"
else
rm "${gravityDBfile}"
fi
mv "${gravityTEMPfile}" "${gravityDBfile}"
echo -e "${OVER} ${TICK} ${str}"
if $oldAvail; then
echo -e " ${TICK} The old database remains available."
fi
}
# Update timestamp when the gravity table was last updated successfully
update_gravity_timestamp() {
output=$( { printf ".timeout 30000\\nINSERT OR REPLACE INTO info (property,value) values ('updated',cast(strftime('%%s', 'now') as int));" | pihole-FTL sqlite3 "${gravityDBfile}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to update gravity timestamp in database ${gravityDBfile}\\n ${output}"
return 1
fi
return 0
}
# Import domains from file and store them in the specified database table
database_table_from_file() {
# Define locals
local table source backup_path backup_file tmpFile type
table="${1}"
source="${2}"
backup_path="${piholeDir}/migration_backup"
backup_file="${backup_path}/$(basename "${2}")"
tmpFile="$(mktemp -p "/tmp" --suffix=".gravity")"
local timestamp
timestamp="$(date --utc +'%s')"
local rowid
declare -i rowid
rowid=1
# Special handling for domains to be imported into the common domainlist table
if [[ "${table}" == "whitelist" ]]; then
type="0"
table="domainlist"
elif [[ "${table}" == "blacklist" ]]; then
type="1"
table="domainlist"
elif [[ "${table}" == "regex" ]]; then
type="3"
table="domainlist"
fi
# Get MAX(id) from domainlist when INSERTing into this table
if [[ "${table}" == "domainlist" ]]; then
rowid="$(pihole-FTL sqlite3 "${gravityDBfile}" "SELECT MAX(id) FROM domainlist;")"
if [[ -z "$rowid" ]]; then
rowid=0
fi
rowid+=1
fi
# Loop over all domains in ${source} file
# Read file line by line
grep -v '^ *#' < "${source}" | while IFS= read -r domain
do
# Only add non-empty lines
if [[ -n "${domain}" ]]; then
if [[ "${table}" == "domain_audit" ]]; then
# domain_audit table format (no enable or modified fields)
echo "${rowid},\"${domain}\",${timestamp}" >> "${tmpFile}"
elif [[ "${table}" == "adlist" ]]; then
# Adlist table format
echo "${rowid},\"${domain}\",1,${timestamp},${timestamp},\"Migrated from ${source}\",,0,0,0" >> "${tmpFile}"
else
# White-, black-, and regexlist table format
echo "${rowid},${type},\"${domain}\",1,${timestamp},${timestamp},\"Migrated from ${source}\"" >> "${tmpFile}"
fi
rowid+=1
fi
done
# Store domains in database table specified by ${table}
# Use printf as .mode and .import need to be on separate lines
# see https://unix.stackexchange.com/a/445615/83260
output=$( { printf ".timeout 30000\\n.mode csv\\n.import \"%s\" %s\\n" "${tmpFile}" "${table}" | pihole-FTL sqlite3 "${gravityDBfile}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to fill table ${table}${type} in database ${gravityDBfile}\\n ${output}"
gravity_Cleanup "error"
fi
# Move source file to backup directory, create directory if not existing
mkdir -p "${backup_path}"
mv "${source}" "${backup_file}" 2> /dev/null || \
echo -e " ${CROSS} Unable to backup ${source} to ${backup_path}"
# Delete tmpFile
rm "${tmpFile}" > /dev/null 2>&1 || \
echo -e " ${CROSS} Unable to remove ${tmpFile}"
}
# Update timestamp of last update of this list. We store this in the "old" database as all values in the new database will later be overwritten
database_adlist_updated() {
output=$( { printf ".timeout 30000\\nUPDATE adlist SET date_updated = (cast(strftime('%%s', 'now') as int)) WHERE id = %i;\\n" "${1}" | pihole-FTL sqlite3 "${gravityDBfile}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to update timestamp of adlist with ID ${1} in database ${gravityDBfile}\\n ${output}"
gravity_Cleanup "error"
fi
}
# Check if a column with name ${2} exists in gravity table with name ${1}
gravity_column_exists() {
output=$( { printf ".timeout 30000\\nSELECT EXISTS(SELECT * FROM pragma_table_info('%s') WHERE name='%s');\\n" "${1}" "${2}" | pihole-FTL sqlite3 "${gravityDBfile}"; } 2>&1 )
if [[ "${output}" == "1" ]]; then
return 0 # Bash 0 is success
fi
return 1 # Bash non-0 is failure
}
# Update number of domain on this list. We store this in the "old" database as all values in the new database will later be overwritten
database_adlist_number() {
# Only try to set number of domains when this field exists in the gravity database
if ! gravity_column_exists "adlist" "number"; then
return;
fi
output=$( { printf ".timeout 30000\\nUPDATE adlist SET number = %i, invalid_domains = %i WHERE id = %i;\\n" "${num_source_lines}" "${num_invalid}" "${1}" | pihole-FTL sqlite3 "${gravityDBfile}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to update number of domains in adlist with ID ${1} in database ${gravityDBfile}\\n ${output}"
gravity_Cleanup "error"
fi
}
# Update status of this list. We store this in the "old" database as all values in the new database will later be overwritten
database_adlist_status() {
# Only try to set the status when this field exists in the gravity database
if ! gravity_column_exists "adlist" "status"; then
return;
fi
output=$( { printf ".timeout 30000\\nUPDATE adlist SET status = %i WHERE id = %i;\\n" "${2}" "${1}" | pihole-FTL sqlite3 "${gravityDBfile}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to update status of adlist with ID ${1} in database ${gravityDBfile}\\n ${output}"
gravity_Cleanup "error"
fi
}
# Migrate pre-v5.0 list files to database-based Pi-hole versions
migrate_to_database() {
# Create database file only if not present
if [ ! -e "${gravityDBfile}" ]; then
# Create new database file - note that this will be created in version 1
echo -e " ${INFO} Creating new gravity database"
if ! generate_gravity_database; then
echo -e " ${CROSS} Error creating new gravity database. Please contact support."
return 1
fi
# Check if gravity database needs to be updated
upgrade_gravityDB "${gravityDBfile}" "${piholeDir}"
# Migrate list files to new database
if [ -e "${adListFile}" ]; then
# Store adlist domains in database
echo -e " ${INFO} Migrating content of ${adListFile} into new database"
database_table_from_file "adlist" "${adListFile}"
fi
if [ -e "${blacklistFile}" ]; then
# Store blacklisted domains in database
echo -e " ${INFO} Migrating content of ${blacklistFile} into new database"
database_table_from_file "blacklist" "${blacklistFile}"
fi
if [ -e "${whitelistFile}" ]; then
# Store whitelisted domains in database
echo -e " ${INFO} Migrating content of ${whitelistFile} into new database"
database_table_from_file "whitelist" "${whitelistFile}"
fi
if [ -e "${regexFile}" ]; then
# Store regex domains in database
# Important note: We need to add the domains to the "regex" table
# as it will only later be renamed to "regex_blacklist"!
echo -e " ${INFO} Migrating content of ${regexFile} into new database"
database_table_from_file "regex" "${regexFile}"
fi
fi
# Check if gravity database needs to be updated
upgrade_gravityDB "${gravityDBfile}" "${piholeDir}"
}
# Determine if DNS resolution is available before proceeding
gravity_CheckDNSResolutionAvailable() {
local lookupDomain="pi.hole"
# Determine if $localList does not exist, and ensure it is not empty
if [[ ! -e "${localList}" ]] || [[ -s "${localList}" ]]; then
lookupDomain="raw.githubusercontent.com"
fi
# Determine if $lookupDomain is resolvable
if timeout 4 getent hosts "${lookupDomain}" &> /dev/null; then
# Print confirmation of resolvability if it had previously failed
if [[ -n "${secs:-}" ]]; then
echo -e "${OVER} ${TICK} DNS resolution is now available\\n"
fi
return 0
elif [[ -n "${secs:-}" ]]; then
echo -e "${OVER} ${CROSS} DNS resolution is not available"
exit 1
fi
# If the /etc/resolv.conf contains resolvers other than 127.0.0.1 then the local dnsmasq will not be queried and pi.hole is NXDOMAIN.
# This means that even though name resolution is working, the getent hosts check fails and the holddown timer keeps ticking and eventually fails
# So we check the output of the last command and if it failed, attempt to use dig +short as a fallback
if timeout 4 dig +short "${lookupDomain}" &> /dev/null; then
if [[ -n "${secs:-}" ]]; then
echo -e "${OVER} ${TICK} DNS resolution is now available\\n"
fi
return 0
elif [[ -n "${secs:-}" ]]; then
echo -e "${OVER} ${CROSS} DNS resolution is not available"
exit 1
fi
# Determine error output message
if pgrep pihole-FTL &> /dev/null; then
echo -e " ${CROSS} DNS resolution is currently unavailable"
else
echo -e " ${CROSS} DNS service is not running"
"${PIHOLE_COMMAND}" restartdns
fi
# Ensure DNS server is given time to be resolvable
secs="120"
echo -ne " ${INFO} Time until retry: ${secs}"
until timeout 1 getent hosts "${lookupDomain}" &> /dev/null; do
[[ "${secs:-}" -eq 0 ]] && break
echo -ne "${OVER} ${INFO} Time until retry: ${secs}"
: $((secs--))
sleep 1
done
# Try again
gravity_CheckDNSResolutionAvailable
}
# Retrieve blocklist URLs and parse domains from adlist.list
gravity_DownloadBlocklists() {
echo -e " ${INFO} ${COL_BOLD}Neutrino emissions detected${COL_NC}..."
if [[ "${gravityDBfile}" != "${gravityDBfile_default}" ]]; then
echo -e " ${INFO} Storing gravity database in ${COL_BOLD}${gravityDBfile}${COL_NC}"
fi
# Retrieve source URLs from gravity database
# We source only enabled adlists, SQLite3 stores boolean values as 0 (false) or 1 (true)
mapfile -t sources <<< "$(pihole-FTL sqlite3 "${gravityDBfile}" "SELECT address FROM vw_adlist;" 2> /dev/null)"
mapfile -t sourceIDs <<< "$(pihole-FTL sqlite3 "${gravityDBfile}" "SELECT id FROM vw_adlist;" 2> /dev/null)"
# Parse source domains from $sources
mapfile -t sourceDomains <<< "$(
# Logic: Split by folder/port
awk -F '[/:]' '{
# Remove URL protocol & optional username:password@
gsub(/(.*:\/\/|.*:.*@)/, "", $0)
if(length($1)>0){print $1}
else {print "local"}
}' <<< "$(printf '%s\n' "${sources[@]}")" 2> /dev/null
)"
local str="Pulling blocklist source list into range"
echo -e "${OVER} ${TICK} ${str}"
if [[ -z "${sources[*]}" ]] || [[ -z "${sourceDomains[*]}" ]]; then
echo -e " ${INFO} No source list found, or it is empty"
echo ""
unset sources
fi
local url domain agent cmd_ext str target compression
echo ""
# Prepare new gravity database
str="Preparing new gravity database"
echo -ne " ${INFO} ${str}..."
rm "${gravityTEMPfile}" > /dev/null 2>&1
output=$( { pihole-FTL sqlite3 "${gravityTEMPfile}" < "${gravityDBschema}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to create new database ${gravityTEMPfile}\\n ${output}"
gravity_Cleanup "error"
else
echo -e "${OVER} ${TICK} ${str}"
fi
target="$(mktemp -p "/tmp" --suffix=".gravity")"
# Use compression to reduce the amount of data that is transferred
# between the Pi-hole and the ad list provider. Use this feature
# only if it is supported by the locally available version of curl
if curl -V | grep -q "Features:.* libz"; then
compression="--compressed"
echo -e " ${INFO} Using libz compression\n"
else
compression=""
echo -e " ${INFO} Libz compression not available\n"
fi
# Loop through $sources and download each one
for ((i = 0; i < "${#sources[@]}"; i++)); do
url="${sources[$i]}"
domain="${sourceDomains[$i]}"
id="${sourceIDs[$i]}"
# Save the file as list.#.domain
saveLocation="${piholeDir}/list.${id}.${domain}.${domainsExtension}"
activeDomains[$i]="${saveLocation}"
# Default user-agent (for Cloudflare's Browser Integrity Check: https://support.cloudflare.com/hc/en-us/articles/200170086-What-does-the-Browser-Integrity-Check-do-)
agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36"
# Provide special commands for blocklists which may need them
case "${domain}" in
"pgl.yoyo.org") cmd_ext="-d mimetype=plaintext -d hostformat=hosts";;
*) cmd_ext="";;
esac
echo -e " ${INFO} Target: ${url}"
local regex check_url
# Check for characters NOT allowed in URLs
regex="[^a-zA-Z0-9:/?&%=~._()-;]"
# this will remove first @ that is after schema and before domain
# \1 is optional schema, \2 is userinfo
check_url="$( sed -re 's#([^:/]*://)?([^/]+)@#\1\2#' <<< "$url" )"
if [[ "${check_url}" =~ ${regex} ]]; then
echo -e " ${CROSS} Invalid Target"
else
gravity_DownloadBlocklistFromUrl "${url}" "${cmd_ext}" "${agent}" "${sourceIDs[$i]}" "${saveLocation}" "${target}" "${compression}"
fi
echo ""
done
str="Creating new gravity databases"
echo -ne " ${INFO} ${str}..."
# Gravity copying SQL script
copyGravity="$(cat "${gravityDBcopy}")"
if [[ "${gravityDBfile}" != "${gravityDBfile_default}" ]]; then
# Replace default gravity script location by custom location
copyGravity="${copyGravity//"${gravityDBfile_default}"/"${gravityDBfile}"}"
fi
output=$( { pihole-FTL sqlite3 "${gravityTEMPfile}" <<< "${copyGravity}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to copy data from ${gravityDBfile} to ${gravityTEMPfile}\\n ${output}"
return 1
fi
echo -e "${OVER} ${TICK} ${str}"
str="Storing downloaded domains in new gravity database"
echo -ne " ${INFO} ${str}..."
output=$( { printf ".timeout 30000\\n.mode csv\\n.import \"%s\" gravity\\n" "${target}" | pihole-FTL sqlite3 "${gravityTEMPfile}"; } 2>&1 )
status="$?"
if [[ "${status}" -ne 0 ]]; then
echo -e "\\n ${CROSS} Unable to fill gravity table in database ${gravityTEMPfile}\\n ${output}"
gravity_Cleanup "error"
else
echo -e "${OVER} ${TICK} ${str}"
fi
if [[ "${status}" -eq 0 && -n "${output}" ]]; then
echo -e " Encountered non-critical SQL warnings. Please check the suitability of the lists you're using!\\n\\n SQL warnings:"
local warning file line lineno
while IFS= read -r line; do
echo " - ${line}"
warning="$(grep -oh "^[^:]*:[0-9]*" <<< "${line}")"
file="${warning%:*}"
lineno="${warning#*:}"
if [[ -n "${file}" && -n "${lineno}" ]]; then
echo -n " Line contains: "
awk "NR==${lineno}" < "${file}"
fi
done <<< "${output}"
echo ""
fi
rm "${target}" > /dev/null 2>&1 || \
echo -e " ${CROSS} Unable to remove ${target}"
gravity_Blackbody=true
}
# num_target_lines does increase for every correctly added domain in pareseList()
num_target_lines=0
num_source_lines=0
num_invalid=0
parseList() {
local adlistID="${1}" src="${2}" target="${3}" incorrect_lines
# This sed does the following things:
# 1. Remove all domains containing invalid characters. Valid are: a-z, A-Z, 0-9, dot (.), minus (-), underscore (_)
# 2. Append ,adlistID to every line
# 3. Remove trailing period (see https://github.com/pi-hole/pi-hole/issues/4701)
# 4. Ensures there is a newline on the last line
sed -e "/[^a-zA-Z0-9.\_-]/d;s/\.$//;s/$/,${adlistID}/;/.$/a\\" "${src}" >> "${target}"
# Find (up to) five domains containing invalid characters (see above)
incorrect_lines="$(sed -e "/[^a-zA-Z0-9.\_-]/!d" "${src}" | head -n 5)"
local num_target_lines_new num_correct_lines
# Get number of lines in source file
num_source_lines="$(grep -c "^" "${src}")"
# Get the new number of lines in destination file
num_target_lines_new="$(grep -c "^" "${target}")"
# Number of new correctly added lines
num_correct_lines="$(( num_target_lines_new-num_target_lines ))"
# Upate number of lines in target file
num_target_lines="$num_target_lines_new"
num_invalid="$(( num_source_lines-num_correct_lines ))"
if [[ "${num_invalid}" -eq 0 ]]; then
echo " ${INFO} Analyzed ${num_source_lines} domains"
else
echo " ${INFO} Analyzed ${num_source_lines} domains, ${num_invalid} domains invalid!"
fi
# Display sample of invalid lines if we found some
if [[ -n "${incorrect_lines}" ]]; then
echo " Sample of invalid domains:"
while IFS= read -r line; do
echo " - ${line}"
done <<< "${incorrect_lines}"
fi
}
compareLists() {
local adlistID="${1}" target="${2}"
# Verify checksum when an older checksum exists
if [[ -s "${target}.sha1" ]]; then
if ! sha1sum --check --status --strict "${target}.sha1"; then
# The list changed upstream, we need to update the checksum
sha1sum "${target}" > "${target}.sha1"
echo " ${INFO} List has been updated"
database_adlist_status "${adlistID}" "1"
database_adlist_updated "${adlistID}"
else
echo " ${INFO} List stayed unchanged"
database_adlist_status "${adlistID}" "2"
fi
else
# No checksum available, create one for comparing on the next run
sha1sum "${target}" > "${target}.sha1"
# We assume here it was changed upstream
database_adlist_status "${adlistID}" "1"
database_adlist_updated "${adlistID}"
fi
}
# Download specified URL and perform checks on HTTP status and file content
gravity_DownloadBlocklistFromUrl() {
local url="${1}" cmd_ext="${2}" agent="${3}" adlistID="${4}" saveLocation="${5}" target="${6}" compression="${7}"
local heisenbergCompensator="" patternBuffer str httpCode success="" ip
# Create temp file to store content on disk instead of RAM
patternBuffer=$(mktemp -p "/tmp" --suffix=".phgpb")
# Determine if $saveLocation has read permission
if [[ -r "${saveLocation}" && $url != "file"* ]]; then
# Have curl determine if a remote file has been modified since last retrieval
# Uses "Last-Modified" header, which certain web servers do not provide (e.g: raw github urls)
# Note: Don't do this for local files, always download them
heisenbergCompensator="-z ${saveLocation}"
fi
str="Status:"
echo -ne " ${INFO} ${str} Pending..."
blocked=false
case $BLOCKINGMODE in
"IP-NODATA-AAAA"|"IP")
# Get IP address of this domain
ip="$(dig "${domain}" +short)"
# Check if this IP matches any IP of the system
if [[ -n "${ip}" && $(grep -Ec "inet(|6) ${ip}" <<< "$(ip a)") -gt 0 ]]; then
blocked=true
fi;;
"NXDOMAIN")
if [[ $(dig "${domain}" | grep "NXDOMAIN" -c) -ge 1 ]]; then
blocked=true
fi;;
"NODATA")
if [[ $(dig "${domain}" | grep "NOERROR" -c) -ge 1 ]] && [[ -z $(dig +short "${domain}") ]]; then
blocked=true
fi;;
"NULL"|*)
if [[ $(dig "${domain}" +short | grep "0.0.0.0" -c) -ge 1 ]]; then
blocked=true
fi;;
esac
if [[ "${blocked}" == true ]]; then
printf -v ip_addr "%s" "${PIHOLE_DNS_1%#*}"
if [[ ${PIHOLE_DNS_1} != *"#"* ]]; then
port=53
else
printf -v port "%s" "${PIHOLE_DNS_1#*#}"
fi
ip=$(dig "@${ip_addr}" -p "${port}" +short "${domain}" | tail -1)
if [[ $(echo "${url}" | awk -F '://' '{print $1}') = "https" ]]; then
port=443;
else port=80
fi
bad_list=$(pihole -q -adlist "${domain}" | head -n1 | awk -F 'Match found in ' '{print $2}')
echo -e "${OVER} ${CROSS} ${str} ${domain} is blocked by ${bad_list%:}. Using DNS on ${PIHOLE_DNS_1} to download ${url}";
echo -ne " ${INFO} ${str} Pending..."
cmd_ext="--resolve $domain:$port:$ip $cmd_ext"
fi
# shellcheck disable=SC2086
httpCode=$(curl -s -L ${compression} ${cmd_ext} ${heisenbergCompensator} -w "%{http_code}" -A "${agent}" "${url}" -o "${patternBuffer}" 2> /dev/null)
case $url in
# Did we "download" a local file?
"file"*)
if [[ -s "${patternBuffer}" ]]; then
echo -e "${OVER} ${TICK} ${str} Retrieval successful"; success=true
else
echo -e "${OVER} ${CROSS} ${str} Not found / empty list"
fi;;
# Did we "download" a remote file?
*)
# Determine "Status:" output based on HTTP response
case "${httpCode}" in
"200") echo -e "${OVER} ${TICK} ${str} Retrieval successful"; success=true;;
"304") echo -e "${OVER} ${TICK} ${str} No changes detected"; success=true;;
"000") echo -e "${OVER} ${CROSS} ${str} Connection Refused";;
"403") echo -e "${OVER} ${CROSS} ${str} Forbidden";;
"404") echo -e "${OVER} ${CROSS} ${str} Not found";;
"408") echo -e "${OVER} ${CROSS} ${str} Time-out";;
"451") echo -e "${OVER} ${CROSS} ${str} Unavailable For Legal Reasons";;
"500") echo -e "${OVER} ${CROSS} ${str} Internal Server Error";;
"504") echo -e "${OVER} ${CROSS} ${str} Connection Timed Out (Gateway)";;
"521") echo -e "${OVER} ${CROSS} ${str} Web Server Is Down (Cloudflare)";;
"522") echo -e "${OVER} ${CROSS} ${str} Connection Timed Out (Cloudflare)";;
* ) echo -e "${OVER} ${CROSS} ${str} ${url} (${httpCode})";;
esac;;
esac
local done="false"
# Determine if the blocklist was downloaded and saved correctly
if [[ "${success}" == true ]]; then
if [[ "${httpCode}" == "304" ]]; then
# Add domains to database table file
parseList "${adlistID}" "${saveLocation}" "${target}"
database_adlist_status "${adlistID}" "2"
database_adlist_number "${adlistID}"
done="true"
# Check if $patternbuffer is a non-zero length file
elif [[ -s "${patternBuffer}" ]]; then
# Determine if blocklist is non-standard and parse as appropriate
gravity_ParseFileIntoDomains "${patternBuffer}" "${saveLocation}"
# Add domains to database table file
parseList "${adlistID}" "${saveLocation}" "${target}"
# Compare lists, are they identical?
compareLists "${adlistID}" "${saveLocation}"
# Update gravity database table (status and updated timestamp are set in
# compareLists)
database_adlist_number "${adlistID}"
done="true"
else
# Fall back to previously cached list if $patternBuffer is empty
echo -e " ${INFO} Received empty file"
fi
fi
# Do we need to fall back to a cached list (if available)?
if [[ "${done}" != "true" ]]; then
# Determine if cached list has read permission
if [[ -r "${saveLocation}" ]]; then
echo -e " ${CROSS} List download failed: ${COL_LIGHT_GREEN}using previously cached list${COL_NC}"
# Add domains to database table file
parseList "${adlistID}" "${saveLocation}" "${target}"
database_adlist_number "${adlistID}"
database_adlist_status "${adlistID}" "3"
else
echo -e " ${CROSS} List download failed: ${COL_LIGHT_RED}no cached list available${COL_NC}"
# Manually reset these two numbers because we do not call parseList here
num_source_lines=0
num_invalid=0
database_adlist_number "${adlistID}"
database_adlist_status "${adlistID}" "4"
fi
fi
}
# Parse source files into domains format
gravity_ParseFileIntoDomains() {
local source="${1}" destination="${2}" firstLine
# Determine if we are parsing a consolidated list
#if [[ "${source}" == "${piholeDir}/${matterAndLight}" ]]; then
# Remove comments and print only the domain name
# Most of the lists downloaded are already in hosts file format but the spacing/formatting is not contiguous
# This helps with that and makes it easier to read
# It also helps with debugging so each stage of the script can be researched more in depth
# 1) Remove carriage returns
# 2) Convert all characters to lowercase
# 3) Remove comments (text starting with "#", include possible spaces before the hash sign)
# 4) Remove lines containing "/"
# 5) Remove leading tabs, spaces, etc.
# 6) Delete lines not matching domain names
< "${source}" tr -d '\r' | \
tr '[:upper:]' '[:lower:]' | \
sed 's/\s*#.*//g' | \
sed -r '/(\/).*$/d' | \
sed -r 's/^.*\s+//g' | \
sed -r '/([^\.]+\.)+[^\.]{2,}/!d' > "${destination}"
chmod 644 "${destination}"
return 0
#fi
# Individual file parsing: Keep comments, while parsing domains from each line
# We keep comments to respect the list maintainer's licensing
read -r firstLine < "${source}"
# Determine how to parse individual source file formats
if [[ "${firstLine,,}" =~ (adblock|ublock|^!) ]]; then
# Compare $firstLine against lower case words found in Adblock lists
echo -e " ${CROSS} Format: Adblock (list type not supported)"
elif grep -q "^address=/" "${source}" &> /dev/null; then
# Parse Dnsmasq format lists
echo -e " ${CROSS} Format: Dnsmasq (list type not supported)"
elif grep -q -E "^https?://" "${source}" &> /dev/null; then
# Parse URL list if source file contains "http://" or "https://"
# Scanning for "^IPv4$" is too slow with large (1M) lists on low-end hardware
echo -ne " ${INFO} Format: URL"
awk '
# Remove URL scheme, optional "username:password@", and ":?/;"
# The scheme must be matched carefully to avoid blocking the wrong URL
# in cases like:
# http://www.evil.com?http://www.good.com
# See RFC 3986 section 3.1 for details.
/[:?\/;]/ { gsub(/(^[a-zA-Z][a-zA-Z0-9+.-]*:\/\/(.*:.*@)?|[:?\/;].*)/, "", $0) }
# Skip lines which are only IPv4 addresses
/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/ { next }
# Print if nonempty
length { print }
' "${source}" 2> /dev/null > "${destination}"
chmod 644 "${destination}"
echo -e "${OVER} ${TICK} Format: URL"
else
# Default: Keep hosts/domains file in same format as it was downloaded
output=$( { mv "${source}" "${destination}"; } 2>&1 )
chmod 644 "${destination}"
if [[ ! -e "${destination}" ]]; then
echo -e "\\n ${CROSS} Unable to move tmp file to ${piholeDir}
${output}"
gravity_Cleanup "error"
fi
fi
}
# Report number of entries in a table
gravity_Table_Count() {
local table="${1}"
local str="${2}"
local num
num="$(pihole-FTL sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM ${table};")"
if [[ "${table}" == "vw_gravity" ]]; then
local unique
unique="$(pihole-FTL sqlite3 "${gravityDBfile}" "SELECT COUNT(DISTINCT domain) FROM ${table};")"
echo -e " ${INFO} Number of ${str}: ${num} (${COL_BOLD}${unique} unique domains${COL_NC})"
pihole-FTL sqlite3 "${gravityDBfile}" "INSERT OR REPLACE INTO info (property,value) VALUES ('gravity_count',${unique});"
else
echo -e " ${INFO} Number of ${str}: ${num}"
fi
}
# Output count of blacklisted domains and regex filters
gravity_ShowCount() {
gravity_Table_Count "vw_gravity" "gravity domains" ""
gravity_Table_Count "vw_blacklist" "exact blacklisted domains"
gravity_Table_Count "vw_regex_blacklist" "regex blacklist filters"
gravity_Table_Count "vw_whitelist" "exact whitelisted domains"
gravity_Table_Count "vw_regex_whitelist" "regex whitelist filters"
}
# Create "localhost" entries into hosts format
gravity_generateLocalList() {
# Empty $localList if it already exists, otherwise, create it
echo "### Do not modify this file, it will be overwritten by pihole -g" > "${localList}"
chmod 644 "${localList}"
# Add additional LAN hosts provided by OpenVPN (if available)
if [[ -f "${VPNList}" ]]; then
awk -F, '{printf $2"\t"$1".vpn\n"}' "${VPNList}" >> "${localList}"
fi
}
# Trap Ctrl-C
gravity_Trap() {
trap '{ echo -e "\\n\\n ${INFO} ${COL_LIGHT_RED}User-abort detected${COL_NC}"; gravity_Cleanup "error"; }' INT
}
# Clean up after Gravity upon exit or cancellation
gravity_Cleanup() {
local error="${1:-}"
str="Cleaning up stray matter"
echo -ne " ${INFO} ${str}..."
# Delete tmp content generated by Gravity
rm ${piholeDir}/pihole.*.txt 2> /dev/null
rm ${piholeDir}/*.tmp 2> /dev/null
rm /tmp/*.phgpb 2> /dev/null
# Ensure this function only runs when gravity_SetDownloadOptions() has completed
if [[ "${gravity_Blackbody:-}" == true ]]; then
# Remove any unused .domains files
for file in "${piholeDir}"/*."${domainsExtension}"; do
# If list is not in active array, then remove it
if [[ ! "${activeDomains[*]}" == *"${file}"* ]]; then
rm -f "${file}" 2> /dev/null || \
echo -e " ${CROSS} Failed to remove ${file##*/}"
fi
done
fi
echo -e "${OVER} ${TICK} ${str}"
# Only restart DNS service if offline
if ! pgrep pihole-FTL &> /dev/null; then
"${PIHOLE_COMMAND}" restartdns
dnsWasOffline=true
fi
# Print Pi-hole status if an error occurred
if [[ -n "${error}" ]]; then
"${PIHOLE_COMMAND}" status
exit 1
fi
}
database_recovery() {
local result
local str="Checking integrity of existing gravity database"
local option="${1}"
echo -ne " ${INFO} ${str}..."
if result="$(pihole-FTL sqlite3 "${gravityDBfile}" "PRAGMA integrity_check" 2>&1)"; then
echo -e "${OVER} ${TICK} ${str} - no errors found"
str="Checking foreign keys of existing gravity database"
echo -ne " ${INFO} ${str}..."
if result="$(pihole-FTL sqlite3 "${gravityDBfile}" "PRAGMA foreign_key_check" 2>&1)"; then
echo -e "${OVER} ${TICK} ${str} - no errors found"
if [[ "${option}" != "force" ]]; then
return
fi
else
echo -e "${OVER} ${CROSS} ${str} - errors found:"
while IFS= read -r line ; do echo " - $line"; done <<< "$result"
fi
else
echo -e "${OVER} ${CROSS} ${str} - errors found:"
while IFS= read -r line ; do echo " - $line"; done <<< "$result"
fi
str="Trying to recover existing gravity database"
echo -ne " ${INFO} ${str}..."
# We have to remove any possibly existing recovery database or this will fail
rm -f "${gravityDBfile}.recovered" > /dev/null 2>&1
if result="$(pihole-FTL sqlite3 "${gravityDBfile}" ".recover" | pihole-FTL sqlite3 "${gravityDBfile}.recovered" 2>&1)"; then
echo -e "${OVER} ${TICK} ${str} - success"
mv "${gravityDBfile}" "${gravityDBfile}.old"
mv "${gravityDBfile}.recovered" "${gravityDBfile}"
echo -ne " ${INFO} ${gravityDBfile} has been recovered"
echo -ne " ${INFO} The old ${gravityDBfile} has been moved to ${gravityDBfile}.old"
else
echo -e "${OVER} ${CROSS} ${str} - the following errors happened:"
while IFS= read -r line ; do echo " - $line"; done <<< "$result"
echo -e " ${CROSS} Recovery failed. Try \"pihole -r recreate\" instead."
exit 1
fi
echo ""
}
helpFunc() {
echo "Usage: pihole -g
Update domains from blocklists specified in adlists.list
Options:
-f, --force Force the download of all specified blocklists
-h, --help Show this help dialog"
exit 0
}
repairSelector() {
case "$1" in
"recover") recover_database=true;;
"recreate") recreate_database=true;;
*) echo "Usage: pihole -g -r {recover,recreate}
Attempt to repair gravity database
Available options:
pihole -g -r recover Try to recover a damaged gravity database file.
Pi-hole tries to restore as much as possible
from a corrupted gravity database.
pihole -g -r recover force Pi-hole will run the recovery process even when
no damage is detected. This option is meant to be
a last resort. Recovery is a fragile task
consuming a lot of resources and shouldn't be
performed unnecessarily.
pihole -g -r recreate Create a new gravity database file from scratch.
This will remove your existing gravity database
and create a new file from scratch. If you still
have the migration backup created when migrating
to Pi-hole v5.0, Pi-hole will import these files."
exit 0;;
esac
}
for var in "$@"; do
case "${var}" in
"-f" | "--force" ) forceDelete=true;;
"-r" | "--repair" ) repairSelector "$3";;
"-h" | "--help" ) helpFunc;;
esac
done
# Remove OLD (backup) gravity file, if it exists
if [[ -f "${gravityOLDfile}" ]]; then
rm "${gravityOLDfile}"
fi
# Trap Ctrl-C
gravity_Trap
if [[ "${recreate_database:-}" == true ]]; then
str="Recreating gravity database from migration backup"
echo -ne "${INFO} ${str}..."
rm "${gravityDBfile}"
pushd "${piholeDir}" > /dev/null || exit
cp migration_backup/* .
popd > /dev/null || exit
echo -e "${OVER} ${TICK} ${str}"
fi
if [[ "${recover_database:-}" == true ]]; then
database_recovery "$4"
fi
# Move possibly existing legacy files to the gravity database
if ! migrate_to_database; then
echo -e " ${CROSS} Unable to migrate to database. Please contact support."
exit 1
fi
if [[ "${forceDelete:-}" == true ]]; then
str="Deleting existing list cache"
echo -ne "${INFO} ${str}..."
rm /etc/pihole/list.* 2> /dev/null || true
echo -e "${OVER} ${TICK} ${str}"
fi
# Gravity downloads blocklists next
if ! gravity_CheckDNSResolutionAvailable; then
echo -e " ${CROSS} Can not complete gravity update, no DNS is available. Please contact support."
exit 1
fi
gravity_DownloadBlocklists
# Create local.list
gravity_generateLocalList
# Migrate rest of the data from old to new database
if ! gravity_swap_databases; then
echo -e " ${CROSS} Unable to create database. Please contact support."
exit 1
fi
# Update gravity timestamp
update_gravity_timestamp
# Ensure proper permissions are set for the database
chown pihole:pihole "${gravityDBfile}"
chmod g+w "${piholeDir}" "${gravityDBfile}"
# Compute numbers to be displayed
gravity_ShowCount
# Determine if DNS has been restarted by this instance of gravity
if [[ -z "${dnsWasOffline:-}" ]]; then
"${PIHOLE_COMMAND}" restartdns reload
fi
gravity_Cleanup
echo ""
"${PIHOLE_COMMAND}" status