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✏️ Editing: maxmind-lite

#!/bin/bash -e

# Free but less accurate GeoLite2 data created by MaxMind: https://www.maxmind.com . Requires license key.
# Updated twice weekly, every Tuesday and Friday.
# Each account (license key) is limited to 2000 total direct downloads in a 24 hour period.

: ${VAR_D:="/usr/local/psa/var/modules/firewall/geoip/`basename "$0"`.d"}
: ${EDITION_TYPE:="GeoLite2"}
EDITION_ID="$EDITION_TYPE-Country-CSV"

die()
{
	echo "`basename "$0"`: $*" >&2
	exit 1
}

load_settings()
{
	[ ! -s "$VAR_D/settings.sh" ] || . "$VAR_D/settings.sh"
}

save_settings()
{
	cat > "./settings.sh" <<-EOT
		: \${DOWNLOAD_TIMEOUT:=$DOWNLOAD_TIMEOUT}
		: \${LICENSE_KEY:=$LICENSE_KEY}
		EOT
}

exists()
{
	[ -s "$VAR_D/db.sqlite3" ]
}

fetch()
{
	load_settings

[ "$EDITION_TYPE" = "GeoLite2" -o "$EDITION_TYPE" = "GeoIP2" ] ||
		die "Unsupported MaxMind EDITION_TYPE='$EDITION_TYPE'"
	[ -n "$LICENSE_KEY" ] ||
		die "Missing MaxMind LICENSE_KEY"

rm -rf "$VAR_D".*
	mkdir -p "`dirname "$VAR_D"`"

local tgt_d=
	tgt_d="`mktemp -d "$VAR_D.XXXXXX"`"
	chmod 700 "$tgt_d"
	cd "$tgt_d"

# Database structure: https://dev.maxmind.com/geoip/docs/databases/city-and-country
	local url="https://download.maxmind.com/app/geoip_download?edition_id=$EDITION_ID&license_key=$LICENSE_KEY&suffix=zip"
	date --utc --rfc-3339=seconds > updated-at
	save_settings
	curl ${DOWNLOAD_TIMEOUT:+-m "$DOWNLOAD_TIMEOUT"} -fsSL "$url" -o dbip-csv.zip
	unzip -jq dbip-csv.zip
	sqlite3 db.sqlite3 <<-EOT
		-- CentOS 7 has SQLite 3.7.17, which doesn't auto-create tables based on CSV header
		CREATE TABLE blocks_ipv4 (network TEXT, geoname_id TEXT, registered_country_geoname_id TEXT,
			represented_country_geoname_id TEXT, is_anonymous_proxy TEXT, is_satellite_provider TEXT);
		CREATE TABLE blocks_ipv6 (network TEXT, geoname_id TEXT, registered_country_geoname_id TEXT,
			represented_country_geoname_id TEXT, is_anonymous_proxy TEXT, is_satellite_provider TEXT);
		CREATE TABLE locations_en(geoname_id TEXT, locale_code TEXT, continent_code TEXT,
			continent_name TEXT, country_iso_code TEXT, country_name TEXT, is_in_european_union TEXT);
		CREATE INDEX blocks_ipv4_geoname_id ON blocks_ipv4 (geoname_id);
		CREATE INDEX blocks_ipv6_geoname_id ON blocks_ipv6 (geoname_id);
		CREATE INDEX locations_en_code_geoname_id ON locations_en (country_iso_code, geoname_id);
		.mode csv
		.import $EDITION_TYPE-Country-Blocks-IPv4.csv blocks_ipv4
		.import $EDITION_TYPE-Country-Blocks-IPv6.csv blocks_ipv6
		.import $EDITION_TYPE-Country-Locations-en.csv locations_en
		-- Since the tables already existed on import, header is also imported as data, remove it
		DELETE FROM blocks_ipv4 WHERE geoname_id = 'geoname_id';
		DELETE FROM blocks_ipv6 WHERE geoname_id = 'geoname_id';
		DELETE FROM locations_en WHERE geoname_id = 'geoname_id';
		EOT
	for table in blocks_ipv4 blocks_ipv6 locations_en; do
		[ "`sqlite3 db.sqlite3 "SELECT count(*) FROM $table;"`" -gt 0 ] ||
			die "Table '$table' in the downloaded DB is empty"
	done
	rm -f dbip-csv.zip *.csv

rm -rf "$VAR_D"
	mv -fT "$tgt_d" "$VAR_D"
}

list()
{
	local country="$1"
	[ -n "$country" ] || die "--list requires a single 2-letter ISO country code argument"

sqlite3 "$VAR_D/db.sqlite3" "
		SELECT network FROM blocks_ipv4 b INNER JOIN locations_en l ON b.geoname_id = l.geoname_id
			WHERE l.country_iso_code = '$country';
		SELECT network FROM blocks_ipv6 b INNER JOIN locations_en l ON b.geoname_id = l.geoname_id
			WHERE l.country_iso_code = '$country';
	"
}

case "$1" in
	--exists) exists ;;
	--fetch)  fetch ;;
	--list)   list "$2" ;;
	*)        die "Unknown command: '$1'" ;;
esac

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