Connect to HPI Wifi

hpi_wifi.sh

#!/bin/bash

# Function to check if nmcli is available
check_requirements() {
    if ! command -v nmcli &> /dev/null; then
        echo "Error: nmcli is not installed. Please install NetworkManager."
        exit 1
    fi
}

# Function to validate input is not empty
validate_input() {
    local input=$1
    local field_name=$2
    if [ -z "$input" ]; then
        echo "Error: $field_name cannot be empty"
        exit 1
    fi
}

# Print welcome message
echo "HPI WiFi Setup Script"
echo "===================="
echo "This script will help you configure the HPI WiFi connection."
echo

# Check requirements
check_requirements

# Get username
read -p "Enter your HPI username (without 'hpi\'): " USERNAME
validate_input "$USERNAME" "Username"

# Get password securely
echo "Enter your password: "
read -s PASSWORD
echo
validate_input "$PASSWORD" "Password"

# Confirm password
echo "Confirm your password: "
read -s PASSWORD_CONFIRM
echo
validate_input "$PASSWORD_CONFIRM" "Password confirmation"

# Check if passwords match
if [ "$PASSWORD" != "$PASSWORD_CONFIRM" ]; then
    echo "Error: Passwords do not match"
    exit 1
fi

echo
echo "Creating WiFi connection..."

# Delete existing connection if it exists
if nmcli connection show "HPI" &> /dev/null; then
    echo "Removing existing HPI connection..."
    nmcli connection delete "HPI"
fi

# Create the connection
if ! nmcli connection add \
    type wifi \
    con-name "HPI" \
    ssid "hpi" \
    wifi-sec.key-mgmt wpa-eap \
    802-1x.eap peap \
    802-1x.phase2-auth mschapv2 \
    802-1x.domain-suffix-match "hpi.uni-potsdam.de" \
    802-1x.system-ca-certs no \
    802-1x.identity "hpi\\$USERNAME" \
    802-1x.anonymous-identity "$USERNAME" \
    802-1x.password "$PASSWORD"; then
    echo "Error: Failed to create connection"
    exit 1
fi

# Set identity
echo "Setting identity..."
if ! nmcli connection modify "HPI" \
    802-1x.identity "hpi\\$USERNAME" \
    802-1x.anonymous-identity "$USERNAME"; then
    echo "Error: Failed to set identity"
    exit 1
fi

# Set password
echo "Setting password..."
if ! nmcli connection modify "HPI" \
    802-1x.password "$PASSWORD" \
    802-1x.password-flags 0; then
    echo "Error: Failed to set password"
    exit 1
fi

# Enable autoconnect
echo "Enabling autoconnect..."
if ! nmcli connection modify "HPI" connection.autoconnect yes; then
    echo "Error: Failed to enable autoconnect"
    exit 1
fi

# Try to connect
echo
echo "Attempting to connect..."
if ! nmcli connection up "HPI"; then
    echo "Error: Failed to connect to HPI network"
    echo "Please check your credentials and try again"
    exit 1
fi

echo
echo "Success! You should now be connected to the HPI network."
echo "To check connection status, use: nmcli connection show HPI"
echo "To show current WiFi status, use: nmcli device wifi show"

hpi_wifi_final.sh

#!/bin/bash

# Function to check if nmcli is available
check_requirements() {
    if ! command -v nmcli &> /dev/null; then
        echo "Error: nmcli is not installed. Please install NetworkManager."
        exit 1
    fi
}

# Function to validate input is not empty
validate_input() {
    local input=$1
    local field_name=$2
    if [ -z "$input" ]; then
        echo "Error: $field_name cannot be empty"
        exit 1
    fi
}

# Print welcome message
echo "HPI WiFi Setup Script"
echo "===================="
echo "This script will help you configure the HPI WiFi connection."
echo

# Check requirements
check_requirements

# Get username
read -p "Enter your HPI username (without 'hpi\'): " USERNAME
validate_input "$USERNAME" "Username"

# Get password securely
echo "Enter your password: "
read -s PASSWORD
echo
validate_input "$PASSWORD" "Password"

# Confirm password
echo "Confirm your password: "
read -s PASSWORD_CONFIRM
echo
validate_input "$PASSWORD_CONFIRM" "Password confirmation"

# Check if passwords match
if [ "$PASSWORD" != "$PASSWORD_CONFIRM" ]; then
    echo "Error: Passwords do not match"
    exit 1
fi

echo
echo "Creating WiFi connection..."

# Delete existing connection if it exists
if nmcli connection show "HPI" &> /dev/null; then
    echo "Removing existing HPI connection..."
    nmcli connection delete "HPI"
fi

# Create the connection
if ! nmcli connection add \
    type wifi \
    con-name "HPI" \
    ssid "hpi" \
    wifi-sec.key-mgmt wpa-eap \
    802-1x.eap peap \
    802-1x.phase2-auth mschapv2 \
    802-1x.domain-suffix-match "hpi.uni-potsdam.de" \
    802-1x.system-ca-certs no \
    802-1x.identity "hpi\\$USERNAME" \
    802-1x.anonymous-identity "$USERNAME" \
    802-1x.password "$PASSWORD" \
    802-1x.password-flags 0 \
    802-1x.password-raw-flags 0; then
    echo "Error: Failed to create connection"
    exit 1
fi

# Set password flags
echo "Setting password flags..."
if ! nmcli connection modify "HPI" 802-1x.password-flags 0; then
    echo "Error: Failed to set password flags"
    exit 1
fi

# Enable autoconnect
echo "Enabling autoconnect..."
if ! nmcli connection modify "HPI" connection.autoconnect yes; then
    echo "Error: Failed to enable autoconnect"
    exit 1
fi

# Try to connect
echo
echo "Attempting to connect..."
if ! nmcli --ask connection up "HPI"; then
    echo "Error: Failed to connect to HPI network"
    echo "Please check your credentials and try again"
    exit 1
fi

echo
echo "Success! You should now be connected to the HPI network."
echo "To check connection status, use: nmcli connection show HPI"
echo "To show current WiFi status, use: nmcli device wifi show"