From 5697acff83bcee5cf578242f58c38e125903405b Mon Sep 17 00:00:00 2001
From: Filip B P <bpfilip@gmail.com>
Date: Tue, 9 Apr 2024 17:48:43 +0200
Subject: [PATCH] Initial commit

---
 README.md | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ip.sh     |  55 ++++++++++++++++++++++++
 2 files changed, 179 insertions(+)
 create mode 100644 README.md
 create mode 100644 ip.sh

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..82ea937
--- /dev/null
+++ b/README.md
@@ -0,0 +1,124 @@
+# Steady Companion PI
+
+## Installation
+
+1. Flash (Companion PI)[https://user.bitfocus.io/docs/companion-pi] on a SD card
+
+1. Paste the following to `userconf.txt` on the boot partition
+
+	```
+	pi:$6$QBrcIp1QtqQX2WmL$GTnNhJ1RKazyv81T3dcIGi/aaxQx8szUDDeMjRQkQvSgucMf7VtDlPnfggghhBPDfdaD.qeE7Dy9qaBBx9v9x1
+	ip:$6$4SrdjLRwj2lJ9XHR$x4Ro/m.LCuFUdfrwG7CWZUktMk0spvIIWoic2litVMEMWBeqjWJ3t.ZeRCEH5LYS5rWxc3bhKuCs6nVTzR9S7/
+	```
+
+1. Insert the SD card and boot the PI
+
+	First time it boots, it should use dhcp.
+
+1. SSH to the PI and run the following commands
+
+	1. Set info on login screen
+
+		```bash
+		sudo tee /etc/issue > /dev/null <<EOT
+		Debian GNU/Linux 12 \n \l
+
+		Login with the username: pi and password: raspberry
+
+		To change the IP of the pi login using username: ip and password: ip
+		and you will be able to see and change the current ip
+
+		EOT
+		```
+
+	1. Add shell script for ip user
+
+		```bash
+		sudo tee /ip.sh > /dev/null <<EOT
+		#!/bin/bash
+
+		# Print the ip address of the raspberry pi
+		current_ip=$(hostname -I | cut -d' ' -f1)
+
+		# Print the ip address
+		echo "The current ip address is $current_ip"
+
+		# Ask if they want to change the ip address
+		echo -n "Do you want to change the ip address? (Y/n) "
+		read change_ip
+
+		# Exit if they don't want to change the ip address
+		if [ "$change_ip" = "n" ]; then
+			exit 0
+		fi
+
+		# Ask if they want to use dhcp
+		echo -n "Do you want to use dhcp? (y/N) "
+		read use_dhcp
+		if [ "$use_dhcp" = "y" ]; then
+			# Set the ip address to dhcp
+			sudo nmcli device modify eth0 ipv4.method auto
+
+			# Restart the network
+			sudo nmcli c down "Wired connection 1"
+			sudo nmcli c up "Wired connection 1"
+			exit 0
+		fi
+
+		# Ask for the new ip address
+		echo -n "Enter the new ip address: "
+		read new_ip
+
+		# Ask for the new subnet mask
+		echo -n "Enter the new CIDR subnet mask (press enter for default of 24) "
+		read subnet_mask
+		if [ -z "$subnet_mask" ]; then
+			subnet_mask="24"
+		fi
+
+		# Ask for the new gateway
+		echo -n "Enter the new gateway (press enter for default of 192.168.25.1) "
+		read gateway
+		if [ -z "$gateway" ]; then
+			gateway="192.168.25.1"
+		fi
+
+		# Set the new ip address
+		sudo nmcli c mod "Wired connection 1" ipv4.addresses $new_ip/$subnet_mask ipv4.method manual
+		sudo nmcli c mod "Wired connection 1" ipv4.gateway $gateway
+
+		# Restart the network
+		sudo nmcli c down "Wired connection 1"
+		sudo nmcli c up "Wired connection 1"
+
+		EOT
+		```
+
+	1. Make script executable
+
+		```bash
+		sudo chmod +x /ip.sh
+		```
+
+	1. Add the user `ip`
+
+		```bash
+		sudo useradd ip --shell /ip.sh -p ip --create-home
+
+	1. Silence the login message
+
+		```bash
+		sudo touch /home/ip/.hushlogin
+		```
+
+	1. Allow user `ip` to configure network
+
+		```bash
+		echo "ip ALL=(ALL:ALL) NOPASSWD: /usr/bin/nmcli" | sudo tee -a /etc/sudoers
+		```
+
+	1. Reboot the PI
+
+		```bash
+		sudo reboot
+		```
diff --git a/ip.sh b/ip.sh
new file mode 100644
index 0000000..02bf062
--- /dev/null
+++ b/ip.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# Print the ip address of the raspberry pi
+current_ip=$(hostname -I | cut -d' ' -f1)
+
+# Print the ip address
+echo "The current ip address is $current_ip"
+
+# Ask if they want to change the ip address
+echo -n "Do you want to change the ip address? (Y/n) "
+read change_ip
+
+# Exit if they don't want to change the ip address
+if [ "$change_ip" = "n" ]; then
+	exit 0
+fi
+
+# Ask if they want to use dhcp
+echo -n "Do you want to use dhcp? (y/N) "
+read use_dhcp
+if [ "$use_dhcp" = "y" ]; then
+	# Set the ip address to dhcp
+	sudo nmcli device modify eth0 ipv4.method auto
+
+	# Restart the network
+	sudo nmcli c down "Wired connection 1"
+	sudo nmcli c up "Wired connection 1"
+	exit 0
+fi
+
+# Ask for the new ip address
+echo -n "Enter the new ip address: "
+read new_ip
+
+# Ask for the new subnet mask
+echo -n "Enter the new CIDR subnet mask (press enter for default of 24) "
+read subnet_mask
+if [ -z "$subnet_mask" ]; then
+	subnet_mask="24"
+fi
+
+# Ask for the new gateway
+echo -n "Enter the new gateway (press enter for default of 192.168.25.1) "
+read gateway
+if [ -z "$gateway" ]; then
+	gateway="192.168.25.1"
+fi
+
+# Set the new ip address
+sudo nmcli c mod "Wired connection 1" ipv4.addresses $new_ip/$subnet_mask ipv4.method manual
+sudo nmcli c mod "Wired connection 1" ipv4.gateway $gateway
+
+# Restart the network
+sudo nmcli c down "Wired connection 1"
+sudo nmcli c up "Wired connection 1"