Allow users to specify a client IP (#34)
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@ -414,17 +414,33 @@ get_export_dir() {
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}
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new_client_setup() {
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get_export_dir
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# Given a list of the assigned internal IPv4 addresses, obtain the lowest still
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# available octet. Important to start looking at 2, because 1 is our gateway.
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octet=2
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while grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "$octet"; do
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(( octet++ ))
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done
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# Don't break the WireGuard configuration in case the address space is full
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if [[ "$octet" -eq 255 ]]; then
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exiterr "253 clients are already configured. The WireGuard internal subnet is full!"
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fi
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get_export_dir
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read -p "Do you want to specify an IP address for the new client? (y/n): " specify_ip
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# Check user's choice
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if [[ "$specify_ip" =~ ^[Yy]$ ]]; then
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read -p "Enter the desired IP address for the new client (e.g., 10.7.0.X): " client_ip
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# Validate the user input IP address
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if [[ ! $client_ip =~ ^10\.7\.0\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]?)$ ]]; then
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exiterr "Invalid IP address. Please enter an IP address within the range 10.7.0.2 to 10.7.0.255."
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fi
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octet=$(echo "$client_ip" | cut -d "." -f 4)
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# Check if the IP is already in use
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if grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "$octet"; then
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exiterr "The IP address is already in use. Please choose another one."
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fi
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else
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# Automatically select an unused IP address
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octet=2
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while grep AllowedIPs /etc/wireguard/wg0.conf | cut -d "." -f 4 | cut -d "/" -f 1 | grep -q "$octet"; do
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(( octet++ ))
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done
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# Don't break the WireGuard configuration in case the address space is full
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if [[ "$octet" -eq 255 ]]; then
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exiterr "253 clients are already configured. The WireGuard internal subnet is full!"
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fi
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fi
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key=$(wg genkey)
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psk=$(wg genpsk)
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# Configure client in the server
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