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executable file 69 lines (58 sloc) 1.86 KB
#! /usr/bin/env bash
KEYS_DIR="/opt/dnscrypt-wrapper/etc/keys"
STKEYS_DIR="${KEYS_DIR}/short-term"
LISTS_DIR="/opt/dnscrypt-wrapper/etc/lists"
BLACKLIST="${LISTS_DIR}/blacklist.txt"
prune() {
/usr/bin/find "$STKEYS_DIR" -type f -cmin +1440 -exec rm -f {} \;
}
rotation_needed() {
if [ $(/usr/bin/find "$STKEYS_DIR" -name '*.cert' -type f -cmin -720 -print -quit | wc -l | sed 's/[^0-9]//g') -le 0 ]; then
echo true
else
echo false
fi
}
new_key() {
ts=$(date '+%s')
/opt/dnscrypt-wrapper/sbin/dnscrypt-wrapper --gen-crypt-keypair \
--crypt-secretkey-file="${STKEYS_DIR}/${ts}.key" &&
/opt/dnscrypt-wrapper/sbin/dnscrypt-wrapper --gen-cert-file \
--xchacha20 \
--provider-publickey-file="${KEYS_DIR}/public.key" \
--provider-secretkey-file="${KEYS_DIR}/secret.key" \
--crypt-secretkey-file="${STKEYS_DIR}/${ts}.key" \
--provider-cert-file="${STKEYS_DIR}/${ts}.cert" \
--cert-file-expire-days=1
[ $? -ne 0 ] && rm -f "${STKEYS_DIR}/${ts}.key" "${STKEYS_DIR}/${ts}.cert"
}
stkeys_files() {
res=""
for file in $(ls "$STKEYS_DIR"/[0-9]*.key); do
res="${res}${file},"
done
echo "$res"
}
stcerts_files() {
res=""
for file in $(ls "$STKEYS_DIR"/[0-9]*.cert); do
res="${res}${file},"
done
echo "$res"
}
if [ ! -f "$KEYS_DIR/provider_name" ]; then
exit 1
fi
provider_name=$(cat "$KEYS_DIR/provider_name")
mkdir -p "$STKEYS_DIR"
prune
[ $(rotation_needed) = true ] && new_key
[ -r "$BLACKLIST" ] && blacklist_opt="--blacklist-file=${BLACKLIST}"
exec /opt/dnscrypt-wrapper/sbin/dnscrypt-wrapper \
--user=_dnscrypt-wrapper \
--listen-address=[::]:443 \
--resolver-address=127.0.0.1:553 \
--provider-name="$provider_name" \
--provider-cert-file="$(stcerts_files)" \
--crypt-secretkey-file=$(stkeys_files) \
$blacklist_opt