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29 lines
1.1 KiB
29 lines
1.1 KiB
#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 2017 Pi-hole, LLC (https://pi-hole.net)
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# Network-wide ad blocking via your own hardware.
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#
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# Provides an automated migration subroutine to convert Pi-hole v3.x wildcard domains to Pi-hole v4.x regex filters
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#
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# This file is copyright under the latest version of the EUPL.
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# Please see LICENSE file for your rights under this license.
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# regexFile set in gravity.sh
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wildcardFile="/etc/dnsmasq.d/03-pihole-wildcard.conf"
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convert_wildcard_to_regex() {
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if [ ! -f "${wildcardFile}" ]; then
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return
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fi
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local addrlines domains uniquedomains
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# Obtain wildcard domains from old file
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addrlines="$(grep -oE "/.*/" ${wildcardFile})"
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# Strip "/" from domain names and convert "." to regex-compatible "\."
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domains="$(sed 's/\///g;s/\./\\./g' <<< "${addrlines}")"
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# Remove repeated domains (may have been inserted two times due to A and AAAA blocking)
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uniquedomains="$(uniq <<< "${domains}")"
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# Automatically generate regex filters and remove old wildcards file
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awk '{print "(^|\\.)"$0"$"}' <<< "${uniquedomains}" >> "${regexFile:?}" && rm "${wildcardFile}"
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}
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