1
0
mirror of https://github.com/pi-hole/pi-hole synced 2024-12-22 14:58:08 +00:00
pi-hole/gravity.sh
Adam Warner 536585b846 Colourise Core Output Text (#1471)
* Define colours within COL_TABLE
* Do not output colours for non-terminal instances
* Removed ":::"
* Fixed indenting & spacing
* Made output consistent throughout project
* Reworded text to fit on standard 80 char wide Terminal screen
* Made 'sudo raspi-config' warning (insufficient disk space) only show on RPi
* Make "Installation/Update Complete" the final msg
* Remove redundant messages
* Simplify update available message
* Confirm user would like to begin uninstall
* If "git pull" string says "Already up-to-date.", place [i] before it
* Colour Temp/Interface output
* Made `pihole disable 5z` invalid
* Added error fallback if invalid argument (not s/m) is detected
* Quoted "$2" for consistency
* Updated help text
* L185/286: Replaced echo with redirect
* User agents for adblock.mahakala.is/adaway.org unnecessary 
* Print newline on confirmation of repository reset
* Add output to admin-related dnsmasq restarts
* Return error message for "pihole -q"
* Imply default checkout behaviour with y/N
* Fix uninstall failing to remove pihole user
* Print checkout 'git remote show origin' STDERR on new line
* Replaced checkout "AdminLTE" wording with "Web Admin"
2017-06-21 21:49:05 +10:00

477 lines
16 KiB
Bash
Executable File

#!/usr/bin/env bash
# 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.
#
# 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 ${coltable}
helpFunc() {
echo "Usage: pihole -g
Update domains from blocklists specified in adlists.list
Options:
-f, --force Force the download of all specified blocklists
-h, --help Show this help dialog"
exit 0
}
PIHOLE_COMMAND="/usr/local/bin/pihole"
adListFile=/etc/pihole/adlists.list
adListDefault=/etc/pihole/adlists.default # Deprecated
adListRepoDefault=/etc/.pihole/adlists.default
whitelistScript="${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 IPv4addr.
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
echo -e " ${INFO} Neutrino emissions detected..."
echo ""
local str="Pulling source lists 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 < ${adListFile}
echo -e "${OVER} ${TICK} ${str}"
}
# 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
else
# Check if cached list exists
if [[ -r "${saveLocation}" ]]; then
echo -e " ${CROSS} List download failed, using cached list (list not updated!)"
else
echo -e " ${CROSS} Download failed and no cached list available (list will not be considered)"
fi
fi
}
# transport - curl the specified url with any needed command extentions
gravity_transport() {
url=$1
cmd_ext=$2
agent=$3
# tmp file, so we don't have to store the (long!) lists in RAM
patternBuffer=$(mktemp)
heisenbergCompensator=""
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 ${patternBuffer})
# Analyze http response
case "$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 $err"; success=false;;
esac
# Process result
gravity_patternCheck "${patternBuffer}" "${success}" "${err}"
# Delete temp file if it hasn't been moved
if [[ -f "${patternBuffer}" ]]; then
rm "${patternBuffer}"
fi
}
# spinup - main gravity function
gravity_spinup() {
echo ""
# Loop through domain list. Download each one and remove commented lines (lines beginning with '# 'or '/') and # blank lines
for ((i = 0; i < "${#sources[@]}"; i++)); do
url=${sources[$i]}
# Get just the domain from the URL
domain=$(cut -d'/' -f3 <<< "${url}")
# Save the file as list.#.domain
saveLocation=${piholeDir}/list.${i}.${domain}.${justDomainsExtension}
activeDomains[$i]=${saveLocation}
agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0 Safari/537.36"
# Use a case statement to download lists that need special cURL commands
# to complete properly and reset the user agent when required
case "${domain}" in
"pgl.yoyo.org")
cmd_ext="-d mimetype=plaintext -d hostformat=hosts"
;;
# Default is a simple request
*) cmd_ext=""
esac
if [[ "${skipDownload}" == false ]]; then
local str="Aiming tractor beam at $domain"
echo -ne " ${INFO} ${str}..."
gravity_transport "$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"
echo -ne " ${INFO} ${str}..."
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}
fi
done
echo -e "${OVER} ${TICK} ${str}"
}
gravity_Blacklist() {
# Append blacklist entries to eventHorizon if they exist
if [[ -f "${blacklistFile}" ]]; then
numBlacklisted=$(wc -l < "${blacklistFile}")
plural=; [[ "$numBlacklisted" != "1" ]] && plural=s
local str="Exact blocked domain${plural}: $numBlacklisted"
echo -e " ${INFO} ${str}"
else
echo -e " ${INFO} Nothing to blacklist!"
fi
}
gravity_Wildcard() {
# Return number of wildcards in output - don't actually handle wildcards
if [[ -f "${wildcardlist}" ]]; then
numWildcards=$(grep -c ^ "${wildcardlist}")
if [[ -n "${IPV4_ADDRESS}" ]] && [[ -n "${IPV6_ADDRESS}" ]];then
let numWildcards/=2
fi
plural=; [[ "$numWildcards" != "1" ]] && plural=s
echo -e " ${INFO} Wildcard blocked domain${plural}: $numWildcards"
else
echo -e " ${INFO} No wildcards used!"
fi
}
gravity_Whitelist() {
echo ""
# Prevent our sources from being pulled into the hole
plural=; [[ "${sources[@]}" != "1" ]] && plural=s
local str="Adding adlist source${plural} to the whitelist"
echo -ne " ${INFO} ${str}..."
urls=()
for url in "${sources[@]}"; do
tmp=$(awk -F '/' '{print $3}' <<< "${url}")
urls=("${urls[@]}" ${tmp})
done
echo -e "${OVER} ${TICK} ${str}"
# Ensure adlist domains are in whitelist.txt
${whitelistScript} -nr -q "${urls[@]}" > /dev/null
# Check whitelist.txt exists.
if [[ -f "${whitelistFile}" ]]; then
# Remove anything in whitelist.txt from the Event Horizon
numWhitelisted=$(wc -l < "${whitelistFile}")
plural=; [[ "$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}
echo -e "${OVER} ${TICK} ${str}"
else
echo -e " ${INFO} Nothing to whitelist!"
fi
}
gravity_unique() {
# Sort and remove duplicates
local str="Removing duplicate domains"
echo -ne " ${INFO} ${str}..."
sort -u ${piholeDir}/${supernova} > ${piholeDir}/${preEventHorizon}
echo -e "${OVER} ${TICK} ${str}"
numberOf=$(wc -l < ${piholeDir}/${preEventHorizon})
echo -e " ${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} unique domains trapped in the event horizon."
}
gravity_doHostFormat() {
# Check vars from setupVars.conf to see if we're using IPv4, IPv6, Or both.
if [[ -n "${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 "${IPV6_ADDRESS}" ]];then
echo -e "${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
fi
}
gravity_hostFormatLocal() {
# Format domain list as "192.168.x.x domain.com"
if [[ -f "/etc/hostname" ]]; then
hostname=$(< /etc/hostname)
elif [ -x "$(command -v hostname)" ]; then
hostname=$(hostname -f)
else
echo -e " ${CROSS} Unable to determine fully qualified domain name of host"
fi
echo -e "${hostname}\npi.hole" > "${localList}.tmp"
# Copy the file over as /etc/pihole/local.list so dnsmasq can use it
rm "${localList}"
gravity_doHostFormat "${localList}.tmp" "${localList}"
rm "${localList}.tmp"
}
gravity_hostFormatGravity() {
# Format domain list as "192.168.x.x domain.com"
echo "" > "${piholeDir}/${accretionDisc}"
gravity_doHostFormat "${piholeDir}/${eventHorizon}" "${piholeDir}/${accretionDisc}"
# Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
mv "${piholeDir}/${accretionDisc}" "${adList}"
}
gravity_hostFormatBlack() {
if [[ -f "${blacklistFile}" ]]; then
numBlacklisted=$(wc -l < "${blacklistFile}")
# Format domain list as "192.168.x.x domain.com"
gravity_doHostFormat "${blacklistFile}" "${blackList}.tmp"
# Copy the file over as /etc/pihole/black.list so dnsmasq can use it
mv "${blackList}.tmp" "${blackList}"
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"
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}
echo -e "${OVER} ${TICK} ${str}"
numberOf=$(wc -l < ${piholeDir}/${supernova})
echo -e " ${INFO} ${COL_LIGHT_BLUE}${numberOf}${COL_NC} domains being pulled in by gravity"
gravity_unique
}
gravity_reload() {
# Reload hosts file
echo ""
local str="Refreshing lists in dnsmasq"
echo -e " ${INFO} ${str}..."
# Ensure /etc/dnsmasq.d/01-pihole.conf is pointing at the correct list!
# First escape forward slashes in the path:
adList=${adList//\//\\\/}
# Now replace the line in dnsmasq file
# sed -i "s/^addn-hosts.*/addn-hosts=$adList/" /etc/dnsmasq.d/01-pihole.conf
"${PIHOLE_COMMAND}" restartdns
}
for var in "$@"; do
case "${var}" in
"-f" | "--force" ) forceGrav=true;;
"-h" | "--help" ) helpFunc;;
"-sd" | "--skip-download" ) skipDownload=true;;
"-b" | "--blacklist-only" ) blackListOnly=true;;
esac
done
if [[ "${forceGrav}" == true ]]; then
str="Deleting exising list cache"
echo -ne "${INFO} ${str}..."
if rm /etc/pihole/list.* 2> /dev/null; then
echo -e "${OVER} ${TICK} ${str}"
else
echo -e "${OVER} ${CROSS} ${str}"
fi
fi
if [[ ! "${blackListOnly}" == true ]]; then
gravity_collapse
gravity_spinup
if [[ "${skipDownload}" == false ]]; then
gravity_Schwarzchild
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."
fi
gravity_Whitelist
fi
gravity_Blacklist
gravity_Wildcard
str="Formatting domains into a HOSTS file"
echo -ne " ${INFO} ${str}..."
if [[ ! "${blackListOnly}" == true ]]; then
gravity_hostFormatLocal
gravity_hostFormatGravity
fi
gravity_hostFormatBlack
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} ${str}"
fi
gravity_reload
"${PIHOLE_COMMAND}" status