cache-domains/scripts/create-dnsmasq.sh

#!/bin/bash
basedir=".."
outputdir="output/dnsmasq"
path="${basedir}/cache_domains.json"

export IFS=' '

test=$(which jq);
out=$?
if [ $out -gt 0 ] ; then
        echo "This script requires jq to be installed."
        echo "Your package manager should be able to find it"
        exit 1
fi

cachenamedefault="disabled"

while read -r line; do
        ip=$(jq ".ips[\"${line}\"]" config.json)
        declare "cacheip$line"="$ip"
done <<< $(jq -r '.ips | to_entries[] | .key' config.json)

while read -r line; do
        name=$(jq -r ".cache_domains[\"${line}\"]" config.json)
        declare "cachename$line"="$name"
done <<< $(jq -r '.cache_domains | to_entries[] | .key' config.json)

rm -rf ${outputdir}
mkdir -p ${outputdir}/hosts
touch ${outputdir}/lancache.conf
while read -r entry; do
        unset cacheip
        unset cachename
        key=$(jq -r ".cache_domains[$entry].name" $path)
        cachename="cachename${key}"
        if [ -z "${!cachename}" ]; then
                cachename="cachenamedefault"
        fi
        if [[ ${!cachename} == "disabled" ]]; then
                continue;
        fi
        cacheipname="cacheip${!cachename}"
        cacheip=$(jq -r 'if type == "array" then .[] else . end' <<< ${!cacheipname} | xargs)
        while read -r fileid; do
                while read -r filename; do
                        destfilename=$(echo $filename | sed -e 's/txt/hosts/')
                        lancacheconf=${outputdir}/lancache.conf
                        outputfile=${outputdir}/hosts/${destfilename}
                        echo "addn-hosts=/etc/dnsmasq/hosts/${destfilename}" >> ${lancacheconf}
                        touch "$outputfile"
                        # Wildcard entries
                        while read -r fileentry; do
                                # Ignore comments and non-wildcards
                                if [[ $fileentry == \#* ]] || [[ ! $fileentry =~ ^\*\. ]]; then
                                        continue
                                fi
                                wildcard=$(echo $fileentry | sed -e "s/^\*\.//")
                                if grep -qx "$wildcard" "$lancacheconf"; then
                                        continue
                                fi
                                for i in ${cacheip}; do
                                        echo "address=/${wildcard}/${i}" >> "$lancacheconf"
                                done
                        done <<< $(cat ${basedir}/$filename | sort);
                        # All other entries
                        while read -r fileentry; do
                                # Ignore comments, newlines and wildcards
                                if [[ $fileentry =~ ^(\#|\*\.) ]] || [[ -z $fileentry ]]; then
                                        continue
                                fi
                                parsed=$(echo $fileentry)
                                if grep -qx "$parsed" "$outputfile"; then
                                        continue
                                fi
                                for i in ${cacheip}; do
                                        echo "${i} ${parsed}" >> "$outputfile"
                                done
                        done <<< $(cat ${basedir}/$filename | sort);
                done <<< $(jq -r ".cache_domains[$entry].domain_files[$fileid]" $path)
        done <<< $(jq -r ".cache_domains[$entry].domain_files | to_entries[] | .key" $path)
done <<< $(jq -r '.cache_domains | to_entries[] | .key' $path)

cat << EOF
Configuration generation completed.

Please copy the following files:
- ./${outputdir}/lancache.conf to /etc/dnsmasq/dnsmasq.d/
- ./${outputdir}/hosts to /etc/dnsmasq/
EOF