fix OTA

webconfig/scripts/bt-settime

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+#
+# bt-settime - set system date/time (and RTC when available).
+#
+# Usage:
+#   bt-settime "YYYY-MM-DD HH:MM:SS"
+#
+# Invoked through sudo by the web configurator.
+set -euo pipefail
+
+err() { echo "bt-settime: $*" >&2; exit 1; }
+
+[ "$#" -eq 1 ] || err 'usage: bt-settime "YYYY-MM-DD HH:MM:SS"'
+
+DT="$1"
+[[ "$DT" =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}\ [0-9]{2}:[0-9]{2}:[0-9]{2}$ ]] \
+    || err "invalid datetime (expected YYYY-MM-DD HH:MM:SS)"
+
+date -s "$DT" >/dev/null
+hwclock -w 2>/dev/null || true
+echo "ok $DT"