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#!/bin/bash
ipset_exists() {
ipset -L "$1" >/dev/null 2>/dev/null
}
die() {
echo "error: $@"
exit 1
}
IPSET_NAME="$1"
[ -z "$IPSET_NAME" ] && {
echo "usage: $0 IPSET_NAME"
exit
}
if ! ipset_exists "$IPSET_NAME"; then
echo "warn: set $IPSET_NAME doesn't exists, creating it for you..."
ipset create $IPSET_NAME hash:net || die "failed to create ipset"
fi
list=$(curl -s "https://www.cloudflare.com/ips-v4")
[ -z "$list" ] && die "failed to fetch cf networks"
ipset flush $IPSET_NAME || die "failed to flush $IPSET_NAME"
for net in $list; do
ipset add $IPSET_NAME $net || echo "error: failed to add $net to $IPSET_NAME"
done
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