Aufgeräumt

scripts/wifi_fallback_manager.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -euo pipefail
+
+WIFI_IFACE="wlan0"
+PRIMARY_CONN="netplan-wlan0-eskimue.de"
+SECONDARY_CONN="4pi"
+FALLBACK_AP_CONN="CUNO-AP"
+CHECK_INTERVAL=20
+
+get_active_connection() {
+  nmcli -t -f GENERAL.CONNECTION device show "$WIFI_IFACE" 2>/dev/null | head -n 1 | cut -d: -f2-
+}
+
+activate_connection() {
+  local connection_name="$1"
+  nmcli --wait 15 connection up "$connection_name" ifname "$WIFI_IFACE" >/dev/null 2>&1
+}
+
+ensure_best_connection() {
+  local active_connection
+  active_connection="$(get_active_connection)"
+
+  if [[ "$active_connection" == "$PRIMARY_CONN" ]]; then
+    return
+  fi
+
+  if activate_connection "$PRIMARY_CONN"; then
+    return
+  fi
+
+  active_connection="$(get_active_connection)"
+  if [[ "$active_connection" == "$SECONDARY_CONN" ]]; then
+    return
+  fi
+
+  if activate_connection "$SECONDARY_CONN"; then
+    return
+  fi
+
+  active_connection="$(get_active_connection)"
+  if [[ "$active_connection" != "$FALLBACK_AP_CONN" ]]; then
+    activate_connection "$FALLBACK_AP_CONN" || true
+  fi
+}
+
+while true; do
+  ensure_best_connection
+  sleep "$CHECK_INTERVAL"
+done