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- Windows VM now uses 172.31.0.20 via VM_NET_IP env var - Updated get_windows_ip to look for 172.31.x.x - Fixed get_container_ip to exclude docker bridge gateway 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
114 lines
3.7 KiB
Bash
Executable File
114 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeuo pipefail
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# Startup hook - runs after container starts
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# Dynamically detects Windows VM IP and sets up networking
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# Install required packages (not persistent across restarts)
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echo "[rego-tunnel] Installing required packages..."
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apt-get update -qq && apt-get install -y -qq socat openssh-client netcat-openbsd >/dev/null 2>&1 || true
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# Setup SSH key for accessing Windows VM
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echo "[rego-tunnel] Setting up SSH key..."
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mkdir -p /root/.ssh
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cp /vpn_scripts/id_ed25519-lenovo /root/.ssh/ 2>/dev/null || true
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chmod 600 /root/.ssh/id_ed25519-lenovo 2>/dev/null || true
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get_windows_ip() {
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# Method 1: DHCP leases (hostname is "Windows")
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local ip=$(awk '/Windows/ {print $3}' /var/lib/misc/dnsmasq.leases 2>/dev/null | head -1)
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if [[ -n "$ip" ]]; then echo "$ip"; return; fi
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# Method 2: ip neigh (ARP table) - look for 172.31.x.x on docker interface (VM_NET_IP subnet)
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ip=$(ip neigh show dev docker 2>/dev/null | grep -oE '172\.31\.[0-9]+\.[0-9]+' | head -1)
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if [[ -n "$ip" ]]; then echo "$ip"; return; fi
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# Method 3: qemu.ip file (if available)
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cat /run/shm/qemu.ip 2>/dev/null || true
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}
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get_container_ip() {
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# Get container's external IP (172.31.0.10) - exclude docker bridge gateway (.1)
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ip -4 addr 2>/dev/null | grep -oE '172\.31\.0\.[0-9]+' | grep -v '\.1$' | head -1
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}
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(
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# Wait for Windows VM to boot and get IP
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echo "[rego-tunnel] Waiting for Windows VM..."
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WINDOWS_IP=""
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for i in {1..120}; do
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WINDOWS_IP=$(get_windows_ip)
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if [[ -n "$WINDOWS_IP" ]]; then
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echo "[rego-tunnel] Windows VM IP: $WINDOWS_IP"
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break
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fi
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sleep 2
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done
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if [[ -z "$WINDOWS_IP" ]]; then
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echo "[rego-tunnel] ERROR: Could not detect Windows VM IP"
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exit 1
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fi
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# Wait for SSH to be available on Windows
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echo "[rego-tunnel] Waiting for SSH on Windows..."
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for i in {1..60}; do
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if nc -z "$WINDOWS_IP" 22 2>/dev/null; then
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echo "[rego-tunnel] SSH is available"
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break
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fi
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sleep 2
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done
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CONTAINER_IP=$(get_container_ip)
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echo "[rego-tunnel] Container IP: $CONTAINER_IP"
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# Add MASQUERADE for docker bridge
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iptables -t nat -C POSTROUTING -o docker -j MASQUERADE 2>/dev/null || \
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iptables -t nat -A POSTROUTING -o docker -j MASQUERADE
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# Allow forwarding to Windows VM
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iptables -C FORWARD -d "$WINDOWS_IP" -j ACCEPT 2>/dev/null || \
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iptables -A FORWARD -d "$WINDOWS_IP" -j ACCEPT
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# Start socat to forward SSH from Windows VM
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pkill -f "socat.*:22" 2>/dev/null || true
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socat TCP-LISTEN:22,fork,reuseaddr TCP:"$WINDOWS_IP":22 &
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echo "[rego-tunnel] socat SSH forwarder started on port 22"
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# Start socat to forward SOCKS5 proxy from Windows VM
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pkill -f "socat.*1080" 2>/dev/null || true
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socat TCP-LISTEN:1080,fork,reuseaddr TCP:"$WINDOWS_IP":1080 &
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echo "[rego-tunnel] socat SOCKS5 forwarder started on port 1080"
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# Add DNAT rules for port forwarding
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add_dnat() {
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local port=$1
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iptables -t nat -C PREROUTING -d "$CONTAINER_IP" -p tcp --dport "$port" -j DNAT --to-destination "$WINDOWS_IP:$port" 2>/dev/null || \
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iptables -t nat -A PREROUTING -d "$CONTAINER_IP" -p tcp --dport "$port" -j DNAT --to-destination "$WINDOWS_IP:$port"
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}
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# SSH access
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add_dnat 22
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# IBM i standard ports
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add_dnat 23
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add_dnat 446
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add_dnat 448
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add_dnat 449
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# IBM i data ports
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for port in $(seq 8470 8476); do add_dnat $port; done
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# Additional port ranges
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for port in $(seq 2000 2020); do add_dnat $port; done
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for port in $(seq 3000 3020); do add_dnat $port; done
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for port in $(seq 10000 10020); do add_dnat $port; done
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for port in $(seq 36000 36010); do add_dnat $port; done
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echo "[rego-tunnel] iptables DNAT rules configured"
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echo "[rego-tunnel] SOCKS5 proxy available at $CONTAINER_IP:1080"
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) &
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return 0
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