maza-ad-blocking/maza

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#!/bin/sh
# START
set -e
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# VARIABLES
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PROGNAME=$(basename $0)
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CONFIG=($HOME/.maza/)
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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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START_TAG="## MAZA - List ad blocking"
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PROJECT="### https://github.com/tanrax/maza-ad-blocking"
AUTHOR="### Created by Andros Fenollosa (https://programadorwebvalencia.com/)"
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END_TAG="## END MAZA"
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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
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rm -f $CONFIG/$LIST
mkdir -p $CONFIG
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# Download DNS list
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curl -L -s "https://pgl.yoyo.org/adservers/serverlist.php?showintro=0;hostformat=hosts" -o "$CONFIG/$LIST"
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# Clear list
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## Get PRE tag
sed -i .bak -n "/<pre>/,/<\/pre>/p" "$CONFIG/$LIST"
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## Remove comments
sed -i .bak '/^#/ d' "$CONFIG/$LIST"
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## Remove first line
sed -i .bak '1d' "$CONFIG/$LIST"
## Remove last line
sed -i .bak '$ d' "$CONFIG/$LIST"
## Add start tag DNS list in first line
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sed -i .bak "1i\\
$AUTHOR
" "$CONFIG/$LIST"
sed -i .bak "1i\\
$PROJECT
" "$CONFIG/$LIST"
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sed -i .bak "1i\\
$START_TAG
" "$CONFIG/$LIST"
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# Remove temp file
rm "$CONFIG$LIST.bak"
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## Add end tag DNS list in first line
echo $END_TAG >> "$CONFIG/$LIST"
# Notify user
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echo "${COLOR_GREEN}Done!${COLOR_RESET}"
}
start() {
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# Add List to host file
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cat "$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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sed -i .bak -n "/$START_TAG/,/$END_TAG/d" "$HOST_FILE"
# Remove temp file
rm "$HOST_FILE.bak"
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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