277 lines
9.1 KiB
Bash
Executable File
277 lines
9.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# =============================================================================
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# NetworkManager Captive Portal Auto-Detector
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# =============================================================================
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# Erstellt von Pascal Bouquet am 16.09.2025
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# Aktualisiert am 18.09.2025
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#
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# Dieses Skript ist freie Software: Es kann frei verwendet, bearbeitet und
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# verbreitet werden. Es wird keine Garantie für die Funktionsfähigekeit übernommen.
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# =============================================================================
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# =============================================================================
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# KONFIGURATION
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# =============================================================================
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LOG_FILE="/var/log/nm-captive.log"
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LOG_LEVEL="ERROR" # NONE, DEBUG, INFO, WARNING, ERROR
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CHECK_INTERVAL=300 # 5 Minuten in Sekunden
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MAX_CHECKS=12 # Maximal 1 Stunde lang prüfen (12 * 5min)
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# Test-URLs für Captive Portal Erkennung
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TEST_URLS=(
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"http://captive.apple.com/hotspot-detect.html"
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"http://connectivitycheck.gstatic.com/generate_204"
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)
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# =============================================================================
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# FUNKTIONEN
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# =============================================================================
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log() {
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local level=$1
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local message=$2
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# Kein Logging wenn LOG_LEVEL=NONE
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if [ "$LOG_LEVEL" = "NONE" ]; then
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return
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fi
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# Log-Level Filterung
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case $LOG_LEVEL in
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"DEBUG") echo "$(date '+%Y-%m-%d %H:%M:%S') - $level - $message" >> "$LOG_FILE" ;;
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"INFO")
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if [[ "$level" != "DEBUG" ]]; then
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echo "$(date '+%Y-%m-%d %H:%M:%S') - $level - $message" >> "$LOG_FILE"
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fi
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;;
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"WARNING")
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if [[ "$level" == "WARNING" || "$level" == "ERROR" ]]; then
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echo "$(date '+%Y-%m-%d %H:%M:%S') - $level - $message" >> "$LOG_FILE"
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fi
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;;
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"ERROR")
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if [[ "$level" == "ERROR" ]]; then
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echo "$(date '+%Y-%m-%d %H:%M:%S') - $level - $message" >> "$LOG_FILE"
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fi
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;;
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esac
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}
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get_user_environment() {
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local user=$1
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local user_id=$(id -u "$user")
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# Finde den Desktop-Prozess und übernehme dessen Environment
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local pid=$(pgrep -u "$user" -n plasmashell || pgrep -u "$user" -n gnome-shell || pgrep -u "$user" -n kwin_wayland || echo "")
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if [ -n "$pid" ] && [ -f "/proc/$pid/environ" ]; then
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log "DEBUG" "Using environment from process $pid"
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# Extrahiere alle benötigten Environment-Variablen
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tr '\0' '\n' < "/proc/$pid/environ" | grep -E "(WAYLAND|DISPLAY|XDG|DBUS|USER|HOME|PATH)"
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else
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# Fallback: Basis-Environment setzen
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log "DEBUG" "Using fallback environment"
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echo "USER=$user"
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echo "HOME=/home/$user"
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echo "XDG_RUNTIME_DIR=/run/user/$user_id"
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echo "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$user_id/bus"
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# Versuche, den echten Display zu finden
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if [ -S "/run/user/$user_id/wayland-0" ]; then
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echo "WAYLAND_DISPLAY=wayland-0"
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echo "XDG_SESSION_TYPE=wayland"
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elif [ -S "/tmp/.X11-unix/X0" ]; then
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echo "DISPLAY=:0"
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else
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echo "DISPLAY=:0"
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fi
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fi
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}
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get_user_session() {
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local user=""
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local display=""
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local session_type=""
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# Finde den aktuellen GUI-Benutzer
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user=$(who | grep -E "(tty[0-9]|pts/)" | awk '{print $1}' | head -n1)
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log "DEBUG" "who found user: $user"
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if [ -n "$user" ]; then
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local user_id=$(id -u "$user")
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# Prüfe auf Wayland
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if [ -S "/run/user/$user_id/wayland-0" ]; then
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session_type="wayland"
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display="wayland-0"
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log "DEBUG" "Wayland socket detected"
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elif [ -S "/tmp/.X11-unix/X0" ]; then
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session_type="x11"
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display=":0"
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log "DEBUG" "X11 socket detected"
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else
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# Fallback basierend auf Prozessen
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if pgrep -u "$user" kwin_wayland >/dev/null; then
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session_type="wayland"
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display="wayland-0"
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log "DEBUG" "Wayland process detected"
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else
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session_type="x11"
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display=":0"
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log "DEBUG" "Assuming X11"
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fi
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fi
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fi
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echo "$user $display $session_type"
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}
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check_captive_portal() {
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local captive_detected=false
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for url in "${TEST_URLS[@]}"; do
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log "DEBUG" "Testing URL: $url"
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if [[ "$url" == *"apple.com"* ]]; then
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local response=$(curl -s -L --connect-timeout 5 "$url")
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if [ $? -ne 0 ]; then
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log "DEBUG" "Network error for $url"
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captive_detected=true
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break
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elif ! echo "$response" | grep -qi "success"; then
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log "DEBUG" "Apple check failed - no 'Success' in response"
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captive_detected=true
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break
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fi
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elif [[ "$url" == *"google"* || "$url" == *"gstatic"* ]]; then
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local http_code=$(curl -s -o /dev/null -w "%{http_code}" --connect-timeout 5 "$url")
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if [ $? -ne 0 ]; then
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log "DEBUG" "Network error for $url"
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captive_detected=true
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break
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elif [ "$http_code" != "204" ]; then
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log "DEBUG" "Google check failed - HTTP $http_code instead of 204"
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captive_detected=true
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break
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fi
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fi
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done
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if [ "$captive_detected" = true ]; then
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log "INFO" "Captive portal detected"
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return 1
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else
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log "INFO" "All connectivity checks passed - no captive portal"
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return 0
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fi
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}
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start_firefox() {
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local user=$1
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local display=$2
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local session_type=$3
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log "INFO" "Attempting to start Firefox for user: $user, display: $display, type: $session_type"
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# Holle die komplette Environment des Users
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local user_env=$(get_user_environment "$user")
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log "DEBUG" "User environment: $user_env"
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# Baue den sudo-Befehl mit der kompletten Environment
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local env_vars=""
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while IFS= read -r line; do
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if [ -n "$line" ]; then
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env_vars="$env_vars $line"
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fi
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done <<< "$user_env"
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# Starte Firefox mit der kompletten Environment
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log "DEBUG" "Starting Firefox with full user environment"
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sudo -u "$user" $env_vars firefox --new-window "http://detectportal.firefox.com/canonical.html" &
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local pid=$!
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sleep 1
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if ps -p $pid >/dev/null 2>&1; then
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log "INFO" "Firefox successfully started with PID: $pid"
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return 0
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else
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log "ERROR" "Firefox process died immediately after start"
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return 1
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fi
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}
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start_periodic_checks() {
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local interface="$1"
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local user="$2"
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local display="$3"
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local session_type="$4"
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local check_count=0
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log "INFO" "Starting periodic checks for $interface (every ${CHECK_INTERVAL}s)"
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while [ $check_count -lt $MAX_CHECKS ]; do
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sleep $CHECK_INTERVAL
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((check_count++))
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log "DEBUG" "Periodic check $check_count/$MAX_CHECKS for $interface"
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if ! check_captive_portal; then
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log "INFO" "Captive portal still active - re-opening browser"
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if start_firefox "$user" "$display" "$session_type"; then
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log "INFO" "Firefox re-opened successfully"
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else
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log "ERROR" "Failed to re-open Firefox"
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fi
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else
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log "INFO" "Captive portal resolved - stopping periodic checks"
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break
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fi
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done
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log "INFO" "Periodic checks completed for $interface"
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}
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# =============================================================================
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# HAUPTPROGRAMM
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# =============================================================================
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log "INFO" "=== Dispatch triggered: $1 $2 ==="
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if [[ "$1" == wl* ]] && [ "$2" = "up" ]; then
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sleep 3
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if ! check_captive_portal; then
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log "INFO" "CAPTIVE PORTAL DETECTED! Opening browser..."
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read user display session_type <<< $(get_user_session)
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if [ -n "$user" ] && [ -n "$display" ]; then
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log "INFO" "Found user: $user, display: $display, type: $session_type"
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# Starte Firefox
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if start_firefox "$user" "$display" "$session_type"; then
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log "INFO" "Firefox successfully launched"
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# STARTE PERIODISCHE CHECKS IM HINTERGRUND
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log "INFO" "Starting periodic checks in background..."
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start_periodic_checks "$1" "$user" "$display" "$session_type" &
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else
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log "ERROR" "Failed to start Firefox"
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fi
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else
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log "WARNING" "No local user or display found for GUI access"
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fi
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else
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log "INFO" "No captive portal detected on connection start"
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fi
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elif [[ "$1" == wl* ]] && [ "$2" = "down" ]]; then
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log "INFO" "WLAN interface $1 disconnected"
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fi
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log "INFO" "=== Completed ==="
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