add deploy class, check_cert.sh, cron setup

files/check_cert.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+
+# this script compares the existing cert against the new cert in vault, and
+# replaces existing cert only if it is newer and valid.
+
+# function defs
+get_fingerprint() {
+    openssl x509 -noout -fingerprint -in <(echo "$1") | awk -F= '{print $2}'
+}
+
+get_enddate() {
+    date --date="$(openssl x509 -noout -enddate -in <(echo "$1")| awk -F= '{print $2}')" --iso-8601
+}
+
+# arguments
+DOMAIN=$1
+CERT_PREFIX=$2
+EXISTING_CERT_DIR="${CERT_PREFIX}/${DOMAIN}"
+EXISTING_CERT_PATH="${EXISTING_CERT_DIR}/cert.pem"
+EXISTING_KEY_PATH="${EXISTING_CERT_DIR}/cert.key"
+
+# variables
+ONE_WEEK=604800
+TODAY=$(date --iso-8601)
+
+
+NEWCERT_VAULT_PATH="/secret/letsencrypt/${DOMAIN}/cert.pem"
+NEWKEY_VAULT_PATH="/secret/letsencrypt/${DOMAIN}/cert.key"
+
+# Get new cert info
+NEWCERT=$(vault read -field=value $NEWCERT_VAULT_PATH) || exit -1
+NEWKEY=$(vault read -field=value $NEWKEY_VAULT_PATH) || exit -1
+NEWCERT_FINGERPRINT=$(get_fingerprint "$NEWCERT")
+NEWCERT_ENDDATE=$(get_enddate "$NEWCERT")
+
+# we need to bail right away if we don't have a valid new cert
+if [ "$NEWCERT_FINGERPRINT" == "" ]
+then
+    echo "no valid new cert found!"
+    exit -1
+fi
+
+#echo "new fingerprint: $NEWCERT_FINGERPRINT"
+#echo "new enddate: $NEWCERT_ENDDATE"
+
+# Get existing cert info
+EXISTING_CERT=$(cat $EXISTING_CERT_PATH)
+EXISTING_CERT_FINGERPRINT=$(get_fingerprint "$EXISTING_CERT")
+EXISTING_CERT_ENDDATE=$(get_enddate "$EXISTING_CERT")
+
+#echo "existing fingerprint: $EXISTING_CERT_FINGERPRINT"
+#echo "existing enddate: $EXISTING_CERT_ENDDATE"
+
+
+# check that new cert is different
+# if it is the same, exit normally, this will be the common case
+if [ "$NEWCERT_FINGERPRINT" == "$EXISTING_CERT_FINGERPRINT" ]
+then
+    exit -1
+fi
+
+# check that new cert is newer than current cert
+if [ "$EXISTING_CERT_ENDDATE" \> "$NEWCERT_ENDDATE" ]
+then
+    echo "existing cert expiration is older, exiting"
+    exit -1
+fi
+
+# check that new cert is not expired
+if [ "$NEWCERT_ENDDATE" \< "$TODAY" ]
+then
+    echo "new cert is expired, exiting"
+    exit -1
+fi
+
+# if we made it this far, the cert looks good, replace it
+echo "replacing cert at $EXISTING_CERT_PATH"
+mkdir $EXISTING_CERT_DIR || true
+echo "$NEWCERT" > $EXISTING_CERT_PATH
+echo "$NEWKEY"  > $EXISTING_KEY_PATH
+
+
+#openssl x509 -in <(vault read -field=value /secret/apidb.org/cert.pem) -noout -checkend 8640000
+
+