IP Address Changer

This project allows users to change their internet IP address by reconnecting to a dynamic IP provider. The client application listens for a hotkey (Ctrl + Shift + S) and sends a request to the server to initiate the reconnection process. The server performs the necessary commands to disconnect and reconnect the network interface, then retrieves the new IP address.

Features

Automatically reconnects the specified network interface.
Displays notifications about the old and new IP addresses.
Logs the process to a file.
Supports dynamic IP changes from a variety of external IP services.

Server-Side Instructions

Building the Server

To build the server application, use the following command in the terminal:

GOOS=linux GOARCH=arm64 go build -o ip_changer_server /server/main.go

Copy the executable file

Move the executable file of your ip_changer_server application to the /opt/ip_changer/ directory on your OpenWRT router. Make sure the directory exists, and if not, create it:

mkdir -p /opt/ip_changer/
scp /path/to/ip_changer_server root@<192.168.1.1>:/opt/ip_changer/

Create the service

Create a service file /etc/init.d/ip_changer and add the following code to it:

#!/bin/sh /etc/rc.common

START=99  
STOP=10   

PROG_NAME="ip_changer"
PROG_PATH="/opt/ip_changer/ip_changer_server" 

start() {
    echo "Start $PROG_NAME..."
    $PROG_PATH &
}

stop() {
    echo "Stop $PROG_NAME..."
    kill $(pgrep -f $PROG_NAME)
}

restart() {
    stop
    start
}

boot() {
    start
}

Make the file executable

Make sure the service file has execute permissions:

chmod +x /etc/init.d/ip_changer

And also the application itself

chmod +x /opt/ip_changer/ip_changer_server

Add the service to autorun

Enable autorun for your service:

/etc/init.d/ip_changer enable

If the error ': No such file or directory.common occurs, here is solution

Start the service

Start the service manually:

/etc/init.d/ip_changer start

Now your application will automatically start when the router boots up and you can control it with the start, stop, and restart commands.

Client-Side Instructions

Dependencies

Make sure you have the following Go packages installed:

go get github.com/gen2brain/beeep
go get golang.design/x/hotkey

Building the Client

To build the client application, use the following command in the terminal:

go build -buildmode=exe -o ip-changer-client.exe /client/main.go

Use

Hotkey mode (Default)

Run the client normally to activate background mode with hotkey support (Ctrl + Shift + S):

./ip-changer

This will:

Run in the background
Listen for Ctrl + Shift + S
Trigger the IP change
Show a system notification

CLI Mode

You can also run commands directly from the command line:

./ip-changer cli reconnect