fix: force proxy bypass for captive portal detection

- Firefox ignored `no_proxy` environment variables when a manual 
  proxy was configured in the user profile.
- Switched to using a temporary profile with `--no-remote` to 
  guarantee a clean state without proxy settings.
- Added automatic cleanup for the temporary profile directory.
- Updated user session detection to be more robust on LMDE 7 / Debian 13.
This commit is contained in:
2026-02-17 18:32:11 +01:00
parent 270764c1c4
commit 91126707cb

View File

@@ -4,7 +4,7 @@
# NetworkManager Captive Portal Auto-Detector
# =============================================================================
# Erstellt von Pascal Bouquet am 16.09.2025
# Aktualisiert am 18.09.2025
# Aktualisiert am 17.02.2026
#
# Dieses Skript ist freie Software: Es kann frei verwendet, bearbeitet und
# verbreitet werden. Es wird keine Garantie für die Funktionsfähigekeit übernommen.
@@ -14,10 +14,9 @@
# KONFIGURATION
# =============================================================================
LOG_FILE="/var/log/nm-captive.log"
LOG_LEVEL="ERROR" # NONE, DEBUG, INFO, WARNING, ERROR
LOG_LEVEL="INFO" # NONE, DEBUG, INFO, WARNING, ERROR
CHECK_INTERVAL=300 # 5 Minuten in Sekunden
MAX_CHECKS=12 # Maximal 1 Stunde lang prüfen (12 * 5min)
# Test-URLs für Captive Portal Erkennung
TEST_URLS=(
"http://captive.apple.com/hotspot-detect.html"
@@ -57,7 +56,6 @@ log() {
;;
esac
}
get_user_environment() {
local user=$1
local user_id=$(id -u "$user")
@@ -88,45 +86,17 @@ get_user_environment() {
fi
fi
}
get_user_session() {
local user=""
local display=""
local session_type=""
# Finde den aktuellen GUI-Benutzer
user=$(who | grep -E "(tty[0-9]|pts/)" | awk '{print $1}' | head -n1)
log "DEBUG" "who found user: $user"
if [ -n "$user" ]; then
local user=$(loginctl list-users | grep -v "UID" | head -n1 | awk '{print $2}')
local user_id=$(id -u "$user")
# Prüfe auf Wayland
local display=":0"
local session_type="x11"
if [ -S "/run/user/$user_id/wayland-0" ]; then
session_type="wayland"
display="wayland-0"
log "DEBUG" "Wayland socket detected"
elif [ -S "/tmp/.X11-unix/X0" ]; then
session_type="x11"
display=":0"
log "DEBUG" "X11 socket detected"
else
# Fallback basierend auf Prozessen
if pgrep -u "$user" kwin_wayland >/dev/null; then
session_type="wayland"
display="wayland-0"
log "DEBUG" "Wayland process detected"
else
session_type="x11"
display=":0"
log "DEBUG" "Assuming X11"
fi
fi
fi
echo "$user $display $session_type"
}
check_captive_portal() {
local captive_detected=false
@@ -167,41 +137,36 @@ check_captive_portal() {
return 0
fi
}
start_firefox() {
local user=$1
local display=$2
local session_type=$3
local user_id=$(id -u "$user")
log "INFO" "Attempting to start Firefox for user: $user, display: $display, type: $session_type"
# Erstelle ein temporäres Verzeichnis für das Profil im RAM (tmpfs)
# Wir machen das als User, damit die Berechtigungen direkt stimmen
local temp_profile=$(sudo -u "$user" mktemp -d -p /tmp/ firefox-captive.XXXXXX)
# Holle die komplette Environment des Users
local user_env=$(get_user_environment "$user")
log "DEBUG" "User environment: $user_env"
# Baue den sudo-Befehl mit der kompletten Environment
local env_vars=""
while IFS= read -r line; do
if [ -n "$line" ]; then
env_vars="$env_vars $line"
fi
done <<< "$user_env"
# Starte Firefox mit der kompletten Environment
log "DEBUG" "Starting Firefox with full user environment"
sudo -u "$user" $env_vars firefox --new-window "http://detectportal.firefox.com/canonical.html" &
log "INFO" "Starting Firefox with clean temp profile: $temp_profile"
# Startbefehl
sudo -u "$user" env \
DISPLAY="$display" \
WAYLAND_DISPLAY="$display" \
XDG_RUNTIME_DIR="/run/user/$user_id" \
DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$user_id/bus" \
/usr/bin/firefox \
--no-remote \
--profile "$temp_profile" \
--private-window "http://detectportal.firefox.com/canonical.html" &
local pid=$!
sleep 1
if ps -p $pid >/dev/null 2>&1; then
log "INFO" "Firefox successfully started with PID: $pid"
return 0
else
log "ERROR" "Firefox process died immediately after start"
return 1
fi
}
# Ein kleiner Hintergrund-Job, der das Temp-Verzeichnis nach Schließen von Firefox löscht
(
while ps -p $pid > /dev/null; do sleep 5; done
rm -rf "$temp_profile"
log "DEBUG" "Cleaned up temp profile $temp_profile"
) &
}
start_periodic_checks() {
local interface="$1"
local user="$2"
@@ -239,7 +204,6 @@ start_periodic_checks() {
# =============================================================================
log "INFO" "=== Dispatch triggered: $1 $2 ==="
if [[ "$1" == wl* ]] && [ "$2" = "up" ]; then
sleep 3
@@ -267,10 +231,7 @@ if [[ "$1" == wl* ]] && [ "$2" = "up" ]; then
else
log "INFO" "No captive portal detected on connection start"
fi
elif [[ "$1" == wl* ]] && [ "$2" = "down" ]]; then
log "INFO" "WLAN interface $1 disconnected"
fi
log "INFO" "=== Completed ==="