maza-ad-blocking/maza

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#!/usr/bin/env bash
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# START
set -e
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# VARIABLES
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URL_DNS_LIST="https://pgl.yoyo.org/adservers/serverlist.php?showintro=0&mimetype=plaintext"
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NAME_OSX="Darwin"
THIS_OS=$(uname -mrs)
PROGNAME=$(basename "$0")
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[[ -z "${XDG_CONFIG_HOME}" ]] && CONFIG=$HOME/.config/maza/ || CONFIG=$XDG_CONFIG_HOME/maza/
HOST_FILE=/etc/hosts
COLOR_RED=$(tput setaf 1)
COLOR_GREEN=$(tput setaf 2)
COLOR_RESET=$(tput sgr0)
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LIST="list"
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LIST_DNSMASQ="dnsmasq.conf"
IGNORE_LIST_DEFAULT="localhost \
localhost.localdomain \
local \
broadcasthost \
ip6-localhost \
ip6-loopback \
ip6-localnet \
ip6-mcastprefix \
ip6-allnodes \
ip6-allrouters \
ip6-allhosts \
0.0.0.0"
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IGNORE_LIST_FILE="ignore"
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START_TAG="## MAZA - List ad blocking"
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PROJECT="### https://github.com/tanrax/maza-ad-blocking"
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AUTHOR="### Created by Andros Fenollosa (https://andros.dev/)"
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END_TAG="## END MAZA"
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# Create sed cross system
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custom-sed() {
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if [[ $THIS_OS = *$NAME_OSX* ]]; then
# Check if OSX and install GSED
if [ -x "$(command -v gsed)" ]; then
gsed "$@"
else
echo "${COLOR_RED}ERROR. You must install gsed if you are using OSX${COLOR_RESET}"
exit 1
fi
else
# Linux
sed "$@"
fi
}
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export -f custom-sed
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# FUNCTIONS
## HELP
usage() {
if [ "$*" != "" ] ; then
echo "Error: $*"
fi
cat << EOF
Usage: $PROGNAME [OPTION]
Simple and efficient local ad blocking throughout the network.
Options:
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status Check if it's active or not
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update Update the list of DNS to be blocked
start Activate blocking DNS.
stop Stop blocking DNS.
--help Display this usage message and exit
EOF
exit 1
}
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status() {
if grep -qF "$START_TAG" "$HOST_FILE";then
echo "${COLOR_GREEN}ENABLED${COLOR_RESET}"
else
echo "${COLOR_RED}DISABLED${COLOR_RESET}"
fi
}
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update() {
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# Make conf folder
rm -f "$CONFIG$LIST"
rm -f "$CONFIG$LIST_DNSMASQ"
mkdir -p "$CONFIG"
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# Download DNS list
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curl -L -s "$URL_DNS_LIST" -o "$CONFIG$LIST"
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## Remove comments
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custom-sed -i.bak '/^#/ d' "$CONFIG$LIST"
## Remove "0.0.0.0" or "127.0.0.1"
custom-sed -i.bak 's/0.0.0.0 //g' "$CONFIG$LIST"
custom-sed -i.bak 's/127.0.0.1 //g' "$CONFIG$LIST"
# Make ignore list
if [ ! -f "$CONFIG$IGNORE_LIST_FILE" ]; then
echo "$IGNORE_LIST_DEFAULT" | tr " " "\n" > "$CONFIG$IGNORE_LIST_FILE"
fi
# Remove ignore list
while read -r line; do
custom-sed -i.bak "/$line/d" "$CONFIG$LIST"
done < "$CONFIG$IGNORE_LIST_FILE"
## Remove empty lines
custom-sed -i.bak '/^$/d' "$CONFIG$LIST"
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# Make dnsmasq format
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cp "$CONFIG$LIST" "$CONFIG$LIST_DNSMASQ"
## doubleclick.net to address=/doubleclick.net/127.0.0.1
custom-sed -i.bak "s/^/address=\//g" "$CONFIG$LIST_DNSMASQ"
custom-sed -i.bak "s/$/\/127.0.0.1/g" "$CONFIG$LIST_DNSMASQ"
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## Add start tag DNS list in first line
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custom-sed -i.bak "1i\\$AUTHOR" "$CONFIG$LIST"
custom-sed -i.bak "1i\\$PROJECT" "$CONFIG$LIST"
custom-sed -i.bak "1i\\$START_TAG" "$CONFIG$LIST"
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## Add end tag DNS list in first line
echo "$END_TAG" >> "$CONFIG$LIST"
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## Add start tag DNS dnsmasq in first line
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custom-sed -i.bak "1i\\$AUTHOR" "$CONFIG$LIST_DNSMASQ"
custom-sed -i.bak "1i\\$PROJECT" "$CONFIG$LIST_DNSMASQ"
custom-sed -i.bak "1i\\$START_TAG" "$CONFIG$LIST_DNSMASQ"
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## Add end tag DNS DNSMASQ in first line
echo "$END_TAG" >> "$CONFIG$LIST_DNSMASQ"
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# Remove temp file
rm "$CONFIG$LIST.bak"
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rm "$CONFIG$LIST_DNSMASQ.bak"
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# Notify user
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echo "${COLOR_GREEN}List updated!${COLOR_RESET}"
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}
start() {
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update
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# Add List to host file
cat "$CONFIG$LIST" >> "$HOST_FILE"
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# Notify user
echo "${COLOR_GREEN}ENABLED!${COLOR_RESET}"
}
stop() {
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# Remove list to host file
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custom-sed -i "/$START_TAG/,/$END_TAG/d" "$HOST_FILE"
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# Remove DNSMASQ
cat /dev/null > "$CONFIG$LIST_DNSMASQ"
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# Notify user
echo "${COLOR_GREEN}DISABLED!${COLOR_RESET}"
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}
# CONTROLE ARGUMENTS
isArg=""
while [ $# -gt 0 ] ; do
case "$1" in
--help)
usage
;;
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status)
isArg="1"
status
;;
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update)
isArg="1"
update
;;
start)
isArg="1"
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start
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;;
stop)
isArg="1"
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stop
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;;
*)
esac
shift
done
if [ -z $isArg ] ; then
usage "Not enough arguments"
fi