CS2 Server Sustainability Script

cs2-server-sustainability-script.sh

#!/bin/bash

# Path to config file and logs directory
CONFIG_FILE="./config.cfg"
LOG_DIR="./logs"

# Create logs directory if it doesn't exist
mkdir -p "$LOG_DIR"

# Ensure tmux is installed
if ! command -v tmux &>/dev/null; then
    echo "tmux not found. Installing..."
    sudo apt update && sudo apt install -y tmux
fi

# Default values
DEFAULT_CRON_TIME="5"
DEFAULT_MAXPLAYERS="10"
DEFAULT_PORT="27015"
DEFAULT_TICKRATE="128"
DEFAULT_HOSTNAME="CS2 DEDICATED SERVER"
DEFAULT_MAP="de_dust2"
DEFAULT_GAME_TYPE="0"
DEFAULT_GAME_MODE="1"
DEFAULT_TOKEN=""

# Function to validate and set value or fallback to default
get_validated_input() {
    local input="$1"
    local default="$2"
    local type="$3"

    if [[ -z "$input" ]]; then
        echo "$default"
    elif [[ "$type" == "int" && "$input" =~ ^[0-9]+$ ]]; then
        echo "$input"
    elif [[ "$type" == "string" ]]; then
        echo "$input"
    else
        echo "$default"
    fi
}

# Function to write config file
write_config() {
    cat > "$CONFIG_FILE" <<EOL
CRON_TIME=${CRON_TIME:-$DEFAULT_CRON_TIME}
MAXPLAYERS=${MAXPLAYERS:-$DEFAULT_MAXPLAYERS}
PORT=${PORT:-$DEFAULT_PORT}
TICKRATE=${TICKRATE:-$DEFAULT_TICKRATE}
HOSTNAME="${HOSTNAME:-$DEFAULT_HOSTNAME}"
MAP=${MAP:-$DEFAULT_MAP}
GAME_TYPE=${GAME_TYPE:-$DEFAULT_GAME_TYPE}
GAME_MODE=${GAME_MODE:-$DEFAULT_GAME_MODE}
TOKEN=${TOKEN:-$DEFAULT_TOKEN}
SERVER_IP=$(curl -s http://checkip.amazonaws.com)
EOL
}

# Function to set up server settings
setup() {
    echo "Setting up the CS2 server configuration..."

    # Prompt for configuration values with defaults and validation
    read -p "Enter cron time for update (default $DEFAULT_CRON_TIME): " CRON_TIME_INPUT
    read -p "Enter max players (default $DEFAULT_MAXPLAYERS): " MAXPLAYERS_INPUT
    read -p "Enter server port (default $DEFAULT_PORT): " PORT_INPUT
    read -p "Enter tickrate (default $DEFAULT_TICKRATE): " TICKRATE_INPUT
    read -p "Enter server hostname (default \"$DEFAULT_HOSTNAME\"): " HOSTNAME_INPUT
    read -p "Enter map (default $DEFAULT_MAP): " MAP_INPUT
    read -p "Enter game type (default $DEFAULT_GAME_TYPE): " GAME_TYPE_INPUT
    read -p "Enter game mode (default $DEFAULT_GAME_MODE): " GAME_MODE_INPUT
    read -p "Enter token (default empty): " TOKEN_INPUT

    # Validate and assign values
    CRON_TIME=$(get_validated_input "$CRON_TIME_INPUT" "$DEFAULT_CRON_TIME" "int")
    MAXPLAYERS=$(get_validated_input "$MAXPLAYERS_INPUT" "$DEFAULT_MAXPLAYERS" "int")
    PORT=$(get_validated_input "$PORT_INPUT" "$DEFAULT_PORT" "int")
    TICKRATE=$(get_validated_input "$TICKRATE_INPUT" "$DEFAULT_TICKRATE" "int")
    HOSTNAME=$(get_validated_input "$HOSTNAME_INPUT" "$DEFAULT_HOSTNAME" "string")
    MAP=$(get_validated_input "$MAP_INPUT" "$DEFAULT_MAP" "string")
    GAME_TYPE=$(get_validated_input "$GAME_TYPE_INPUT" "$DEFAULT_GAME_TYPE" "int")
    GAME_MODE=$(get_validated_input "$GAME_MODE_INPUT" "$DEFAULT_GAME_MODE" "int")
    TOKEN=$(get_validated_input "$TOKEN_INPUT" "$DEFAULT_TOKEN" "string")

    # Write settings to config file
    write_config
    echo "Configuration saved to $CONFIG_FILE" | tee "$LOG_DIR/setup.log"

    # Set up the cron job
    (crontab -l 2>/dev/null; echo "0 $CRON_TIME * * * $(pwd)/cs_server stop && $(pwd)/cs_server update && $(pwd)/cs_server start") | crontab -
    echo "Cron job set up to update and restart the server at $CRON_TIME h daily." | tee -a "$LOG_DIR/setup.log"
}

# Function to start the server
start() {
    source "$CONFIG_FILE"

    # Start server in a detached tmux session
    tmux new-session -d -s cs2server "cd ~/.steam/steam/steamapps/common/Counter-Strike\ Global\ Offensive/game/bin/linuxsteamrt64 && ./cs2 -dedicated -ip $SERVER_IP -maxplayers $MAXPLAYERS -port $PORT -tickrate $TICKRATE +hostname \"$HOSTNAME\" +map $MAP +sv_logfile 1 +sv_lan 0 +game_type $GAME_TYPE +game_mode $GAME_MODE +sv_setsteamaccount \"$TOKEN\""
    echo "CS2 server started in tmux session 'cs2server'." | tee "$LOG_DIR/start.log"
}

# Function to open the server console
console() {
    if tmux has-session -t cs2server 2>/dev/null; then
        tmux attach -t cs2server
    else
        echo "Server is not running. Use './script start' to start the server."
    fi
}

# Function to update the server
update() {
    steamcmd +login anonymous +app_update 730 validate +quit | tee "$LOG_DIR/update.log"
    echo "Server updated successfully." | tee -a "$LOG_DIR/update.log"
}

# Function to stop the server
stop() {
    if tmux has-session -t cs2server 2>/dev/null; then
        tmux send-keys -t cs2server C-c  # Send Ctrl+C to stop the server
        tmux kill-session -t cs2server
        echo "CS2 server stopped." | tee "$LOG_DIR/stop.log"
    else
        echo "Server is not running."
    fi
}

# Main script logic to handle arguments
case "$1" in
    setup)
        setup
        ;;
    start)
        start
        ;;
    console)
        console
        ;;
    update)
        update
        ;;
    stop)
        stop
        ;;
    *)
        echo "Usage: $0 {setup|start|console|update|stop}"
        ;;
esac