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59 lines
1.6 KiB
Bash
59 lines
1.6 KiB
Bash
#! /bin/sh
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KEYS_DIR="/opt/dnscrypt-wrapper/etc/keys"
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STKEYS_DIR="${KEYS_DIR}/short-term"
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prune() {
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find "$STKEYS_DIR" -type f -cmin +1440 -exec rm -f {} \;
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}
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rotation_needed() {
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if [ ! -f "${STKEYS_DIR}/dnscrypt.cert" ]; then
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echo true
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else
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if [ $(find "$STKEYS_DIR" -type f -cmin -720 -print -quit | wc -l | sed 's/[^0-9]//g') -le 0 ]; then
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echo true
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else
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echo false
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fi
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fi
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}
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new_key() {
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ts=$(date '+%s')
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/opt/dnscrypt-wrapper/sbin/dnscrypt-wrapper --gen-crypt-keypair \
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--crypt-secretkey-file="${STKEYS_DIR}/${ts}.key" &&
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/opt/dnscrypt-wrapper/sbin/dnscrypt-wrapper --gen-cert-file \
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--provider-publickey-file="${KEYS_DIR}/public.key" \
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--provider-secretkey-file="${KEYS_DIR}/secret.key" \
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--crypt-secretkey-file="${STKEYS_DIR}/${ts}.key" \
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--provider-cert-file="${STKEYS_DIR}/${ts}.cert" \
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--cert-file-expire-days=1 && \
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mv -f "${STKEYS_DIR}/${ts}.cert" "${STKEYS_DIR}/dnscrypt.cert"
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}
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stkeys_files() {
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res=""
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for file in $(ls "$STKEYS_DIR"/[0-9]*.key); do
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res="${res}${file},"
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done
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echo "$res"
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}
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if [ ! -f "$KEYS_DIR/provider_name" ]; then
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exit 1
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fi
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provider_name=$(cat "$KEYS_DIR/provider_name")
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mkdir -p "$STKEYS_DIR"
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prune
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[ $(rotation_needed) = true ] && new_key
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exec /opt/dnscrypt-wrapper/sbin/dnscrypt-wrapper \
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--user=_dnscrypt-wrapper \
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--listen-address=0.0.0.0:443 \
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--resolver-address=127.0.0.1:553 \
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--provider-name="$provider_name" \
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--provider-cert-file="${STKEYS_DIR}/dnscrypt.cert" \
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--crypt-secretkey-file=$(stkeys_files)
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