# ifnow
A Linux network interface device for communication over the ESP-Now wireless broadcast protocol.

NOTE: This is EXTREMELY work in progress and as it requires root permissions is not recommended to be run unmonitored.

# Build
```
git clone https://git.oit.cloud/morgan/ifnow.git
cd ifnow
mkdir build
cd build
cmake ../
make
```

This should result in the `ifnow` binary in the build directory.

# Usage
This is two steps, first setting up monitoring mode (using aircrack-ng in this method). You will need to determine
your wireless interface name and replace if different from `wlp2s0` in the example. You will also want to set the
channel to match the ESP32 configuration. 

```
sudo airmon-ng start wlp2s0
sudo iw wlp2s0 set channel 1
./ifnow wlp2s0mon now1 10.10.0.13
```

The interface is now up as `now1` and you should be able to write to this interface. In theory `pcap` can
be used to intercept raw packets but if used with LwIP on the ESP32 end, which can be accomplished with
[esp_netif_now](https://git.oit.cloud/morgan/esp_netif_now), any IP stack should work. Has been testing
with UDP and some [CoAP](https://libcoap.net). There are definitely still issues with parsing some incoming
packets.