Improve jails

1 files changed, 28 insertions, 37 deletions

diff --git a/templates/usr_local_bin_do_dyndns.sh.j2 b/templates/usr_local_bin_do_dyndns.sh.j2
index 1b080b7..f23d635 100644
--- a/templates/usr_local_bin_do_dyndns.sh.j2
+++ b/templates/usr_local_bin_do_dyndns.sh.j2
@@ -1,51 +1,42 @@
 #!/bin/sh
 set -eu
 
-: "${DO_DYNDNS_DOMAIN:?DO_DYNDNS_DOMAIN must be set}"
-: "${DO_DYNDNS_HOSTNAME:?DO_DYNDNS_HOSTNAME must be set}"
-: "${DO_DYNDNS_IF4:?DO_DYNDNS_IF4 must be set}"
-: "${DO_DYNDNS_INTERVAL:?DO_DYNDNS_INTERVAL must be set}"
-: "${DO_DYNDNS_AUTH_FILE:?DO_DYNDNS_AUTH_FILE must be set}"
+DOMAIN="jan.systems"
+HOSTNAME="pursotin"
+AUTH_FILE="/usr/local/etc/do_dyndns_auth"
+IF4="$(jexec ingress ifconfig epw1b)"
 
-if [ ! -r "$DO_DYNDNS_AUTH_FILE" ]; then
-  echo "[ERROR] Auth file '$DO_DYNDNS_AUTH_FILE' not readable" >&2
-  exit 1
-fi
+# END OF CONFIG
+
+info() {
+        echo "$(date) [INFO]" $@
+}
 
-DOMAIN="$DO_DYNDNS_DOMAIN"
-HOSTNAME="$DO_DYNDNS_HOSTNAME"
-IF4="$DO_DYNDNS_IF4"
-INTERVAL="$DO_DYNDNS_INTERVAL"
+err() {
+        >&2 echo "$(date) [ERROR]" $@
+}
+
+if [ ! -r "$AUTH_FILE" ]; then
+        err "Auth file '$AUTH_FILE' not readable"
+        exit 1
+fi
 
-while :; do
-    IP4=$(ifconfig "$IF4" | awk '/inet / { print $2 }' | head -n1)
-    DIGITALOCEAN_TOKEN=$(awk '{$1=$1; print}' "$DO_DYNDNS_AUTH_FILE")
+IP4=$(echo "$IF4" | awk '/inet / { print $2 }' | head -n1)
+DIGITALOCEAN_TOKEN=$(awk '{$1=$1; print}' "$AUTH_FILE")
 
-    echo "[INFO] Updating A record for hostname $HOSTNAME in domain $DOMAIN → $IP4"
+info "Updating A record for hostname $HOSTNAME in domain $DOMAIN → $IP4"
 
-    RECORD_ID=$(curl -s -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
-        "https://api.digitalocean.com/v2/domains/$DOMAIN/records?per_page=999999" |
-        jq -r ".domain_records[] | select(.type==\"A\" and .name==\"$HOSTNAME\") | .id")
+RECORD_ID=$(curl -s -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
+"https://api.digitalocean.com/v2/domains/$DOMAIN/records?per_page=999999" |
+jq -r ".domain_records[] | select(.type==\"A\" and .name==\"$HOSTNAME\") | .id")
 
-    if [ -n "$RECORD_ID" ]; then
+if [ -n "$RECORD_ID" ]; then
         curl -s -X PUT \
             -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
             -H "Content-Type: application/json" \
             -d "{\"data\":\"$IP4\"}" \
             "https://api.digitalocean.com/v2/domains/$DOMAIN/records/$RECORD_ID" > /dev/null
-        echo "[INFO] Record $RECORD_ID updated"
-    else
-        echo "[WARN] No A record found for hostname \"$HOSTNAME\" in domain \"$DOMAIN\". Skipping."
-    fi
-
-    SLEEP_SEC=$(printf "%s\n" "$INTERVAL" | awk '
-        /^[0-9]+s$/ { gsub(/s$/, ""); print $0; exit }
-        /^[0-9]+m$/ { gsub(/m$/, ""); print $0 * 60; exit }
-        /^[0-9]+h$/ { gsub(/h$/, ""); print $0 * 3600; exit }
-        /^[0-9]+d$/ { gsub(/d$/, ""); print $0 * 86400; exit }
-        /^[0-9]+$/  { print $0; exit }
-        { print "invalid"; exit 1 }
-    ')
-
-    sleep "$SLEEP_SEC"
-done
+        info "Record $RECORD_ID updated"
+else
+        err "No A record found for hostname \"$HOSTNAME\" in domain \"$DOMAIN\". Skipping."
+fi