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xbnet
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## This repo is currently a work in progress
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- The README.md will be fully updated once the repo is in a stable state
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# TODO:
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- Need to automate rust project (xbnet)
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- Configure (looks good)
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- Build
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- Deploy
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- On ubuntu for testing
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- On Linux for Tegra for TX2
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- On Jetson Orin
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- Working on setup_host_device.sh
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- Issues with bridging interfaces
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- Need to add setup_end_device.sh
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- Need dokcerize service
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- Possibly may need to bridge docker xbnet network will local wifi interface as well
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#!/bin/bash
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get_connected_wifi_device() {
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# Get the active Wi-Fi connections
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connections=$(nmcli -t -f DEVICE,TYPE,STATE device | grep -E '^.*:wifi:connected$' | cut -d: -f1)
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# Return the device name of the first connected Wi-Fi device, or an empty string if none are found
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if [ -z "$connections" ]; then
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echo ""
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else
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# Return the device name
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echo "$connections" | head -n 1
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fi
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}
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get_connected_wifi_name() {
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# Get the device name of the first connected Wi-Fi device
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device=$(get_connected_wifi_device)
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# Return the SSID of the Wi-Fi device, or an empty string if none is found
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if [ -z "$device" ]; then
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echo ""
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else
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# Get the SSID (Wi-Fi name) for the connected device
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name=$(nmcli -t -f NAME,DEVICE connection show --active | grep -E "^.*:$device$" | cut -d: -f1)
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echo "$name"
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fi
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}
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# Enable IP forwarding
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sudo sysctl \
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-w # Write (or set) the value of a kernel parameter
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net.ipv4.ip_forward=1 # Temporarily enable IP forwarding to forward network packets from one network interface to another
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# Configure NAT for the bridge
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sudo iptables \
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-t nat # Specify the nat table used for Network Address Translation
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-A POSTROUTING # Append this rule to the POSTROUTING chain, which alters packets as they are about to leave the network interface
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-o wlp0s20f3 # Apply this rule to packets leaving the wlp0s20f3 interface (Wi-Fi interface)
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-j MASQUERADE # Use the MASQUERADE target to change the source IP address to the IP address of the outgoing interface, enabling multiple devices on a private network to share a single public IP address
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# Configure xbnet and bridge interfaces
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sudo xbnet \
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/dev/ttyUSB0 \ # Port where the XBee device is connected
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tun # Create a TUN (network tunnel) interface for routing IP packets
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sudo ip addr \
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add 192.168.100.1/24 \ # Assign the IP address 192.168.100.1 with a subnet mask of 255.255.255.0
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dev xbnet0 # to the xbnet0 interface
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sudo ip link \
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set dev xbnet0 up # Activate the xbnet0 interface
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sudo brctl \
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addbr br0 # Create a new bridge interface named br0
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sudo brctl \
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addif br0 wlp0s20f3 # Add the Wi-Fi interface wlp0s20f3 to the bridge br0
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sudo brctl \
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addif br0 xbnet0 # Add the xbnet0 interface to the bridge br0
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sudo ip link \
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set dev br0 up # Activate the bridge interface br0
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sudo ip addr \
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flush dev wlp0s20f3 # Remove any IP addresses assigned to the wlp0s20f3 interface
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sudo ip addr \
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add 192.168.7.122/24 \ # Assign the IP address 192.168.7.122 with a subnet mask of 255.255.255.0
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dev br0 # to the bridge interface br0
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sudo ip link \
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set dev wlp0s20f3 up # Reactivate the wlp0s20f3 interface
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#!/bin/bash
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# Source and call get_connected_wifi_name
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call_get_connected_wifi_name() {
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# Source the get_connected_wifi_name.sh script
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source ./scripts/get_connected_wifi_name.sh
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# Call the function to get the Wi-Fi name and capture the returned Wi-Fi name
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wifi_name=$(get_connected_wifi_name)
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# Print the captured Wi-Fi name if it is not empty
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if [ -n "$wifi_name" ]; then
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echo "Connected Wi-Fi SSID: $wifi_name"
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else
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echo "No connected Wi-Fi devices found."
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fi
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}
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# Source and call get_connected_wifi_device
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call_get_connected_wifi_device() {
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# Source the get_connected_wifi_name.sh script
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source ./scripts/get_connected_wifi_name.sh
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# Call the function to get the Wi-Fi device and capture the returned Wi-Fi device
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wifi_device=$(get_connected_wifi_device)
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# Print the captured Wi-Fi device if it is not empty
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if [ -n "$wifi_device" ]; then
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echo "Connected Wi-Fi Device: $wifi_device"
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else
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echo "No connected Wi-Fi devices found."
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fi
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}
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# Call the functions
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call_get_connected_wifi_name
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call_get_connected_wifi_device
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# Configure xbnet on remote device
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sudo xbnet \
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/dev/ttyUSB0 \ # Port where the XBee device is connected \
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tun # Create a TUN (network tunnel) interface for routing IP packets
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sudo ip addr \
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add 192.168.100.2/24 \ # Assign the IP address 192.168.100.2 with a subnet mask of 255.255.255.0 \
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dev xbnet1 # to the xbnet1 interface
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sudo ip link \
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set dev xbnet1 up # Activate the xbnet1 interface
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# Add default route to use host machine as gateway
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sudo ip route \
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add default \ # Add a default route for all outgoing traffic \
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via 192.168.100.1 # Use 192.168.100.1 (the host machine) as the gateway
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