captive_portal-check/99-captive-portal

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#!/usr/bin/env bash
# Konfiguration
LOG_FILE="/var/log/nm-captive.log"
# Log-Funktion
log() {
echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
}
check_captive_portal() {
# Teste mit Google's Connectivity Check (sollte 204 zurückgeben)
local url="http://connectivitycheck.gstatic.com/generate_204"
local http_code=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 5 "$url")
if [ $? -ne 0 ]; then
log "Network error - captive portal likely"
return 1
fi
if [ "$http_code" = "204" ]; then
log "Connectivity check passed (204) - no captive portal"
return 0
else
log "Connectivity check failed (HTTP $http_code) - captive portal detected"
return 1
fi
}
log "=== Dispatch triggered: $1 $2 ==="
if [[ "$1" == wl* ]] && [ "$2" = "up" ]; then
sleep 3
if ! check_captive_portal; then
log "CAPTIVE PORTAL DETECTED! Opening browser..."
# Finde Benutzer und starte Firefox
local_user=$(who | grep "(:0)" | awk '{print $1}' | head -n1)
if [ -n "$local_user" ]; then
export DISPLAY=:0
export XAUTHORITY=/home/$local_user/.Xauthority
# Starte Firefox im Hintergrund
sudo -u $local_user env DISPLAY=:0 XAUTHORITY=/home/$local_user/.Xauthority \
firefox --new-window "http://captive.apple.com" &
log "Firefox started for user $local_user"
fi
else
log "No captive portal detected"
fi
fi
log "=== Completed ==="