alexz
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- build/: Dockerfile + entrypoint.sh (base image with VNC/noVNC) - shared/: Runtime scripts mounted into container - xstartup: VNC startup, launches openconnect-vpn in xterm - openconnect-vpn: Main VPN script with menu, auto-connect, watchdog - Removed source/ folder (replaced by build/) - Updated docker-compose.json with proper volume mounts - Changed port to 6080 (noVNC default) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
564 lines
15 KiB
Bash
564 lines
15 KiB
Bash
#!/bin/bash
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# Cistech VPN Connection Script with OpenConnect SSO
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# Usage: ./openconnect-vpn [-c|--connect] [-d|--disconnect] [-m|--menu] [-r|--routes] [-s|--status] [--help]
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# Credentials from environment variables (set by runtipi)
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OC_URL="${OC_URL:-}"
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OC_USER="${OC_USER:-}"
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OC_PASSWORD="${OC_PASSWORD:-}"
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OC_TOTP_SECRET="${OC_TOTP_SECRET:-}"
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OC_SERVERCERT="${OC_SERVERCERT:-}"
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OC_INTERFACE="${OC_INTERFACE:-tun0}"
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OC_AUTHGROUP="${OC_AUTHGROUP:-}"
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OC_USERAGENT="${OC_USERAGENT:-}"
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OC_EXTRA_ARGS="${OC_EXTRA_ARGS:-}"
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# Log directory
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LOG_DIR="/var/log/openconnect-vpn"
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LOG_RETENTION_DAYS=7
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mkdir -p "$LOG_DIR" 2>/dev/null
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# Get current log file (changes daily)
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get_log_file() {
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echo "$LOG_DIR/$(date '+%Y-%m-%d').log"
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}
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# Cleanup old logs
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cleanup_old_logs() {
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find "$LOG_DIR" -name "*.log" -type f -mtime +$LOG_RETENTION_DAYS -delete 2>/dev/null
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}
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# Colors
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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CYAN='\033[0;36m'
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GRAY='\033[0;90m'
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NC='\033[0m'
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# Flags
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SKIP_AUTO_LOGIN=false
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DO_CONNECT=false
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DO_DISCONNECT=false
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# Logging function
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log() {
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local level="$1"
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local msg="$2"
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local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
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local timestamp_short=$(date '+%H:%M:%S')
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local log_file=$(get_log_file)
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local msg_plain=$(echo -e "$msg" | sed 's/\x1b\[[0-9;]*m//g')
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echo "[$timestamp] [$level] $msg_plain" >> "$log_file"
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case $level in
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INFO) echo -e "${GRAY}[$timestamp_short]${NC} ${GREEN}[INFO]${NC} $msg" ;;
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WARN) echo -e "${GRAY}[$timestamp_short]${NC} ${YELLOW}[WARN]${NC} $msg" ;;
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ERROR) echo -e "${GRAY}[$timestamp_short]${NC} ${RED}[ERROR]${NC} $msg" ;;
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DEBUG) echo -e "${GRAY}[$timestamp_short]${NC} ${CYAN}[DEBUG]${NC} $msg" ;;
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CMD) echo -e "${GRAY}[$timestamp_short]${NC} ${GRAY}[CMD]${NC} $msg" ;;
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*) echo -e "${GRAY}[$timestamp_short]${NC} $msg" ;;
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esac
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}
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# Run command with logging
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run_cmd() {
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local desc="$1"
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shift
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log CMD "$desc: $*"
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output=$("$@" 2>&1)
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local rc=$?
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if [ -n "$output" ]; then
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echo "$output" | while IFS= read -r line; do
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echo -e " ${GRAY}|${NC} $line"
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done
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fi
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return $rc
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}
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# Print banner
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print_banner() {
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echo -e "${CYAN}========================================${NC}"
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echo -e "${CYAN} Cistech VPN Connection Script ${NC}"
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echo -e "${CYAN}========================================${NC}"
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echo ""
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}
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# Show help
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show_help() {
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echo -e "${CYAN}Cistech VPN Connection Script${NC}"
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echo ""
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echo "Usage: $0 [OPTIONS]"
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echo ""
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echo "Options:"
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echo " -c, --connect Start VPN connection and exit"
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echo " -d, --disconnect Disconnect VPN and exit"
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echo " -m, --menu Skip auto-connect, show menu directly"
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echo " -r, --routes Show current routing table and exit"
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echo " -s, --status Show VPN and network status and exit"
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echo " --help Show this help message"
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}
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# Auto-fetch server certificate pin
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get_server_cert_pin() {
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local url="$1"
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local host=$(echo "$url" | sed -E 's|https?://([^/:]+).*|\1|')
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local port=443
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log DEBUG "Fetching certificate pin from $host:$port..."
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local pin=$(echo | openssl s_client -connect "$host:$port" -servername "$host" 2>/dev/null | \
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openssl x509 -pubkey -noout 2>/dev/null | \
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openssl pkey -pubin -outform DER 2>/dev/null | \
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openssl dgst -sha256 -binary | \
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base64)
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if [[ -n "$pin" ]]; then
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echo "pin-sha256:$pin"
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else
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log ERROR "Failed to fetch certificate from $host"
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return 1
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fi
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}
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# Get current TOTP
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get_totp() {
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if [ -n "$OC_TOTP_SECRET" ]; then
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oathtool --totp -b "$OC_TOTP_SECRET"
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fi
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}
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# Check if VPN is connected
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get_vpn_interface() {
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ip link show "$OC_INTERFACE" 2>/dev/null | grep -q "UP" && echo "$OC_INTERFACE"
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}
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get_vpn_ip() {
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local iface=$(get_vpn_interface)
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if [ -n "$iface" ]; then
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ip addr show "$iface" 2>/dev/null | grep -oP 'inet \K[\d.]+' | head -1
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fi
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}
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get_container_ip() {
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ip addr show eth0 2>/dev/null | grep -oP 'inet \K[\d.]+' | head -1
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}
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# Check VPN status
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check_vpn_status() {
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local vpn_iface=$(get_vpn_interface)
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if [ -n "$vpn_iface" ]; then
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local vpn_ip=$(get_vpn_ip)
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log INFO "VPN is ${GREEN}CONNECTED${NC}"
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log DEBUG " Interface: $vpn_iface"
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log DEBUG " VPN IP: $vpn_ip"
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return 0
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else
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log WARN "VPN is ${RED}NOT CONNECTED${NC}"
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return 1
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fi
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}
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# Setup keyring with TOTP secret
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setup_keyring() {
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if [[ -n "$OC_TOTP_SECRET" && -n "$OC_USER" ]]; then
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python3 -c "
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import keyring
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keyring.set_password('openconnect-sso', 'totp/$OC_USER', '$OC_TOTP_SECRET'.upper())
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print('TOTP secret stored in keyring for $OC_USER')
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"
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fi
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}
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# Kill openconnect processes
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kill_vpn_processes() {
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log INFO "Killing VPN processes..."
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local killed=0
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for pid in $(pgrep -f "openconnect" 2>/dev/null); do
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log DEBUG "Killing openconnect (PID $pid)"
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kill -9 "$pid" 2>/dev/null && ((killed++))
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done
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for pid in $(pgrep -f "openconnect-sso" 2>/dev/null); do
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log DEBUG "Killing openconnect-sso (PID $pid)"
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kill -9 "$pid" 2>/dev/null && ((killed++))
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done
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if [ $killed -eq 0 ]; then
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log INFO "No VPN processes were running"
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else
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log INFO "Killed $killed process(es)"
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sleep 1
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fi
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}
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# Disconnect VPN
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disconnect_vpn() {
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log INFO "Disconnecting VPN..."
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kill_vpn_processes
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if check_vpn_status; then
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log WARN "VPN still appears connected"
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return 1
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fi
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log INFO "VPN disconnected"
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return 0
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}
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# Setup IP forwarding
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setup_forwarding() {
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log INFO "Setting up IP forwarding..."
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local vpn_iface=$(get_vpn_interface)
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if [ -z "$vpn_iface" ]; then
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log ERROR "No VPN interface found! Is VPN connected?"
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return 1
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fi
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run_cmd "Enabling IP forwarding" sysctl -w net.ipv4.ip_forward=1
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# NAT masquerade for traffic going through VPN
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if ! iptables -t nat -C POSTROUTING -o "$vpn_iface" -j MASQUERADE 2>/dev/null; then
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run_cmd "Adding NAT masquerade" iptables -t nat -A POSTROUTING -o "$vpn_iface" -j MASQUERADE
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fi
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# Trigger host routing service
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log INFO "Triggering host routing service..."
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touch /runtime/restart-routing
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sleep 2
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if [ ! -f /runtime/restart-routing ]; then
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log INFO "Host routing service restarted"
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else
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log WARN "Host watcher may not be running"
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fi
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log INFO "Forwarding configured"
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}
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# Show routing table
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show_routes() {
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echo -e "${CYAN}========================================${NC}"
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echo -e "${CYAN} Current Routing Table ${NC}"
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echo -e "${CYAN}========================================${NC}"
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echo ""
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echo -e "${GREEN}IPv4 Routes:${NC}"
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ip -4 route show | while IFS= read -r line; do
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if echo "$line" | grep -qE "tun[0-9]"; then
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echo -e " ${YELLOW}$line${NC}"
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else
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echo " $line"
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fi
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done
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echo ""
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echo -e "${GREEN}VPN Interface:${NC}"
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local vpn_iface=$(get_vpn_interface)
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if [ -n "$vpn_iface" ]; then
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ip addr show "$vpn_iface" 2>/dev/null | grep -E "inet|link" | while IFS= read -r line; do
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echo " $line"
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done
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else
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echo -e " ${RED}No VPN interface found${NC}"
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fi
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}
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# Show network status
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show_network_status() {
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log INFO "Current network status:"
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echo ""
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log DEBUG "Network Interfaces:"
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ip -4 addr show | grep -E "inet |^[0-9]+:" | while IFS= read -r line; do
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echo -e " ${GRAY}|${NC} $line"
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done
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echo ""
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local vpn_iface=$(get_vpn_interface)
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if [ -n "$vpn_iface" ]; then
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local vpn_ip=$(get_vpn_ip)
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log INFO "VPN Status: ${GREEN}CONNECTED${NC}"
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log DEBUG " Interface: $vpn_iface"
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log DEBUG " VPN IP: $vpn_ip"
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else
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log WARN "VPN Status: ${RED}NOT CONNECTED${NC}"
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fi
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local container_ip=$(get_container_ip)
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if [ -n "$container_ip" ]; then
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log DEBUG "Container IP: $container_ip"
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fi
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echo ""
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}
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# Print TOTP
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show_totp() {
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if [ -z "$OC_TOTP_SECRET" ]; then
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log ERROR "TOTP secret not configured"
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return 1
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fi
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log INFO "Starting live TOTP display (Ctrl+C to stop)"
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echo ""
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while true; do
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TOTP=$(get_totp)
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SECONDS_LEFT=$((30 - ($(date +%s) % 30)))
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echo -ne "\r ${CYAN}Current TOTP:${NC} ${GREEN}$TOTP${NC} (expires in ${YELLOW}${SECONDS_LEFT}s${NC}) "
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sleep 1
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done
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}
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# Start VPN connection
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start_vpn() {
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local do_auto_login="$1"
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log INFO "=== Starting OpenConnect VPN ==="
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echo ""
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# Kill existing
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kill_vpn_processes
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# Get server cert if not set
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if [[ -z "$OC_SERVERCERT" ]]; then
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log INFO "Fetching server certificate..."
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OC_SERVERCERT=$(get_server_cert_pin "$OC_URL")
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log DEBUG "Server cert: $OC_SERVERCERT"
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fi
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# Setup keyring for TOTP
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setup_keyring
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# Build openconnect command
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OPENCONNECT_CMD="/usr/sbin/openconnect --protocol=anyconnect --servercert $OC_SERVERCERT --interface $OC_INTERFACE --script /usr/share/vpnc-scripts/vpnc-script"
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[[ -n "$OC_AUTHGROUP" ]] && OPENCONNECT_CMD+=" --authgroup $OC_AUTHGROUP"
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[[ -n "$OC_USERAGENT" ]] && OPENCONNECT_CMD+=" --useragent $OC_USERAGENT"
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[[ -n "$OC_EXTRA_ARGS" ]] && OPENCONNECT_CMD+=" $OC_EXTRA_ARGS"
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# Determine SSO args
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if [[ -n "$OC_USER" ]]; then
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OC_SSO_ARGS="--browser-display-mode hidden -u $OC_USER"
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else
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OC_SSO_ARGS="--browser-display-mode shown"
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fi
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# Show credentials
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log INFO "Credentials:"
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echo -e " ${CYAN}URL: $OC_URL${NC}"
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echo -e " ${CYAN}User: $OC_USER${NC}"
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if [ -n "$OC_PASSWORD" ]; then
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echo -e " ${CYAN}Password: (set)${NC}"
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fi
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if [ -n "$OC_TOTP_SECRET" ]; then
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TOTP=$(get_totp)
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echo -e " ${CYAN}TOTP: $TOTP${NC}"
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fi
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echo ""
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log INFO "Launching openconnect-sso..."
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# Run openconnect-sso
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if [[ -n "$OC_USER" && -n "$OC_PASSWORD" ]]; then
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echo "$OC_PASSWORD" | openconnect-sso -s "$OC_URL" $OC_SSO_ARGS -- $OPENCONNECT_CMD &
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elif [[ -n "$OC_USER" ]]; then
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echo "" | openconnect-sso -s "$OC_URL" $OC_SSO_ARGS -- $OPENCONNECT_CMD &
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else
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openconnect-sso -s "$OC_URL" $OC_SSO_ARGS -- $OPENCONNECT_CMD &
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fi
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VPN_PID=$!
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# Wait for connection
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log INFO "Waiting for VPN connection..."
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local wait_count=0
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local max_wait=120
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while [ -z "$(get_vpn_interface)" ]; do
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sleep 2
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((wait_count+=2))
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if [ $((wait_count % 10)) -eq 0 ]; then
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log DEBUG "Still waiting... (${wait_count}s)"
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fi
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if [ $wait_count -ge $max_wait ]; then
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log ERROR "Timeout waiting for VPN after ${max_wait}s"
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return 1
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fi
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# Check if process died
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if ! kill -0 $VPN_PID 2>/dev/null; then
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log ERROR "openconnect-sso process died"
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return 1
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fi
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done
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log INFO "VPN connected!"
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local vpn_ip=$(get_vpn_ip)
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log DEBUG " Interface: $OC_INTERFACE"
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log DEBUG " VPN IP: $vpn_ip"
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sleep 3
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setup_forwarding
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log INFO "VPN setup complete"
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return 0
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}
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# Main menu
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main_menu() {
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echo -e "${GREEN}Options:${NC}"
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echo -e " ${CYAN}1${NC} - Start VPN connection"
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echo -e " ${CYAN}2${NC} - Disconnect VPN"
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echo -e " ${CYAN}3${NC} - Show live TOTP"
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echo -e " ${CYAN}4${NC} - Setup IP forwarding rules"
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echo -e " ${CYAN}5${NC} - Show network status"
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echo -e " ${CYAN}6${NC} - Show routing table"
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echo -e " ${CYAN}7${NC} - Kill VPN processes"
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echo -e " ${CYAN}q${NC} - Quit"
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echo ""
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}
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# Watchdog
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start_watchdog() {
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log INFO "Starting VPN watchdog (check every 60s)..."
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local check_interval=60
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local reconnect_attempts=0
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local max_reconnect_attempts=3
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while true; do
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sleep $check_interval
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local vpn_iface=$(get_vpn_interface)
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if [ -n "$vpn_iface" ]; then
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reconnect_attempts=0
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else
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((reconnect_attempts++))
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log WARN "VPN disconnected! Attempt $reconnect_attempts/$max_reconnect_attempts..."
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if [ $reconnect_attempts -le $max_reconnect_attempts ]; then
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kill_vpn_processes
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sleep 2
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start_vpn "true" &
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local wait_count=0
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while [ -z "$(get_vpn_interface)" ] && [ $wait_count -lt 120 ]; do
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sleep 2
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((wait_count+=2))
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done
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if [ -n "$(get_vpn_interface)" ]; then
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log INFO "VPN reconnected!"
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reconnect_attempts=0
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else
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log ERROR "Reconnect failed"
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fi
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else
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log ERROR "Max reconnect attempts reached"
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sleep 300
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reconnect_attempts=0
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fi
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fi
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done
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}
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# Parse args
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parse_args() {
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while [[ $# -gt 0 ]]; do
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case $1 in
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-c|--connect)
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DO_CONNECT=true
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shift
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;;
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-d|--disconnect)
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DO_DISCONNECT=true
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shift
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;;
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-m|--menu)
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SKIP_AUTO_LOGIN=true
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shift
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;;
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-r|--routes)
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show_routes
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exit 0
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;;
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-s|--status)
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print_banner
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check_vpn_status
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echo ""
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show_network_status
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exit 0
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;;
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--help)
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show_help
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exit 0
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;;
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*)
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echo "Unknown option: $1"
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exit 1
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;;
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esac
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done
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}
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# Main
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parse_args "$@"
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cleanup_old_logs
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echo "" >> "$(get_log_file)"
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log INFO "openconnect-vpn script started"
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log DEBUG "OC_URL=$OC_URL"
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log DEBUG "OC_USER=$OC_USER"
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print_banner
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if [ "$DO_DISCONNECT" = "true" ]; then
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disconnect_vpn
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exit $?
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fi
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if [ "$DO_CONNECT" = "true" ]; then
|
|
start_vpn "true"
|
|
exit $?
|
|
fi
|
|
|
|
# Check current status or auto-connect
|
|
if [ "$SKIP_AUTO_LOGIN" = "true" ]; then
|
|
log INFO "Menu mode - skipping auto-connect"
|
|
elif check_vpn_status; then
|
|
echo ""
|
|
log INFO "VPN already connected. Setting up forwarding..."
|
|
setup_forwarding
|
|
else
|
|
echo ""
|
|
log INFO "Auto-starting VPN connection..."
|
|
echo ""
|
|
if start_vpn "true"; then
|
|
# Start watchdog in background
|
|
start_watchdog &
|
|
WATCHDOG_PID=$!
|
|
log DEBUG "Watchdog started (PID $WATCHDOG_PID)"
|
|
fi
|
|
fi
|
|
|
|
# Menu loop
|
|
while true; do
|
|
echo ""
|
|
main_menu
|
|
echo -ne "${CYAN}Choice: ${NC}"
|
|
read -r choice
|
|
echo ""
|
|
|
|
[[ -z "${choice// }" ]] && continue
|
|
|
|
case $choice in
|
|
1) start_vpn "true" && { start_watchdog & } ;;
|
|
2) disconnect_vpn ;;
|
|
3) show_totp ;;
|
|
4) setup_forwarding ;;
|
|
5) show_network_status ;;
|
|
6) show_routes ;;
|
|
7) kill_vpn_processes ;;
|
|
q|Q) log INFO "Goodbye!"; exit 0 ;;
|
|
*) ;;
|
|
esac
|
|
done
|