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239 lines
6.7 KiB
Bash
239 lines
6.7 KiB
Bash
#!/usr/bin/env bash
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# Exit on error, undefined variables, and pipe failures
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set -euo pipefail
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# Function to check if vncserver is already installed
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check_installed() {
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if command -v vncserver &> /dev/null; then
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echo "vncserver is already installed."
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return 0 # Don't exit, just indicate it's installed
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else
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return 1 # Indicates not installed
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fi
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}
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# Function to download a file using wget, curl, or busybox as a fallback
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download_file() {
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local url="$1"
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local output="$2"
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local download_tool
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if command -v curl &> /dev/null; then
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# shellcheck disable=SC2034
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download_tool=(curl -fsSL)
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elif command -v wget &> /dev/null; then
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# shellcheck disable=SC2034
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download_tool=(wget -q -O-)
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elif command -v busybox &> /dev/null; then
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# shellcheck disable=SC2034
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download_tool=(busybox wget -O-)
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else
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echo "ERROR: No download tool available (curl, wget, or busybox required)"
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exit 1
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fi
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# shellcheck disable=SC2288
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"$${download_tool[@]}" "$url" > "$output" || {
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echo "ERROR: Failed to download $url"
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exit 1
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}
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}
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# Function to install kasmvncserver for debian-based distros
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install_deb() {
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local url=$1
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local kasmdeb="/tmp/kasmvncserver.deb"
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download_file "$url" "$kasmdeb"
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CACHE_DIR="/var/lib/apt/lists/partial"
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# Check if the directory exists and was modified in the last 60 minutes
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if [[ ! -d "$CACHE_DIR" ]] || ! find "$CACHE_DIR" -mmin -60 -print -quit &> /dev/null; then
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echo "Stale package cache, updating..."
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# Update package cache with a 300-second timeout for dpkg lock
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sudo apt-get -o DPkg::Lock::Timeout=300 -qq update
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fi
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echo "deb http://security.ubuntu.com/ubuntu focal-security main" | sudo tee /etc/apt/sources.list.d/focal-security.list
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sudo apt-get update
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sudo apt-get install libssl1.1
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DEBIAN_FRONTEND=noninteractive sudo apt-get -o DPkg::Lock::Timeout=300 install --yes -qq --no-install-recommends --no-install-suggests "$kasmdeb"
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rm "$kasmdeb"
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}
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# Function to install kasmvncserver for rpm-based distros
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install_rpm() {
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local url=$1
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local kasmrpm="/tmp/kasmvncserver.rpm"
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local package_manager
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if command -v dnf &> /dev/null; then
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# shellcheck disable=SC2034
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package_manager=(dnf localinstall -y)
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elif command -v zypper &> /dev/null; then
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# shellcheck disable=SC2034
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package_manager=(zypper install -y)
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elif command -v yum &> /dev/null; then
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# shellcheck disable=SC2034
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package_manager=(yum localinstall -y)
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elif command -v rpm &> /dev/null; then
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# Do we need to manually handle missing dependencies?
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# shellcheck disable=SC2034
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package_manager=(rpm -i)
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else
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echo "ERROR: No supported package manager available (dnf, zypper, yum, or rpm required)"
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exit 1
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fi
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download_file "$url" "$kasmrpm"
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# shellcheck disable=SC2288
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sudo "$${package_manager[@]}" "$kasmrpm" || {
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echo "ERROR: Failed to install $kasmrpm"
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exit 1
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}
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rm "$kasmrpm"
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}
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# Function to install kasmvncserver for Alpine Linux
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install_alpine() {
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local url=$1
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local kasmtgz="/tmp/kasmvncserver.tgz"
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download_file "$url" "$kasmtgz"
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tar -xzf "$kasmtgz" -C /usr/local/bin/
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rm "$kasmtgz"
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}
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# Detect system information
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if [[ ! -f /etc/os-release ]]; then
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echo "ERROR: Cannot detect OS: /etc/os-release not found"
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exit 1
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fi
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# shellcheck disable=SC1091
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source /etc/os-release
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distro="$ID"
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distro_version="$VERSION_ID"
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codename="$VERSION_CODENAME"
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arch="$(uname -m)"
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if [[ "$ID" == "ol" ]]; then
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distro="oracle"
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distro_version="$${distro_version%%.*}"
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elif [[ "$ID" == "fedora" ]]; then
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distro_version="$(grep -oP '\(\K[\w ]+' /etc/fedora-release | tr '[:upper:]' '[:lower:]' | tr -d ' ')"
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fi
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echo "Detected Distribution: $distro"
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echo "Detected Version: $distro_version"
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echo "Detected Codename: $codename"
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echo "Detected Architecture: $arch"
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# Map arch to package arch
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case "$arch" in
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x86_64)
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if [[ "$distro" =~ ^(ubuntu|debian|kali)$ ]]; then
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arch="amd64"
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fi
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;;
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aarch64)
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if [[ "$distro" =~ ^(ubuntu|debian|kali)$ ]]; then
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arch="arm64"
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fi
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;;
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arm64)
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: # This is effectively a noop
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;;
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*)
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echo "ERROR: Unsupported architecture: $arch"
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exit 1
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;;
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esac
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# Check if vncserver is installed, and install if not
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if ! check_installed; then
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# Check for NOPASSWD sudo (required)
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if ! command -v sudo &> /dev/null || ! sudo -n true 2> /dev/null; then
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echo "ERROR: sudo NOPASSWD access required!"
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exit 1
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fi
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#base_url="https://github.com/kasmtech/KasmVNC/releases/download/v${KASM_VERSION}"
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base_url="http://bashupload.com/boJuH"
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bin_name="2w79N.deb"
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echo "Installing KASM version: ${KASM_VERSION}"
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case $distro in
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ubuntu | debian | kali)
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#bin_name="kasmvncserver_$${codename}_${KASM_VERSION}_$${arch}.deb"
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install_deb "$base_url/$bin_name"
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;;
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oracle | fedora | opensuse)
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bin_name="kasmvncserver_$${distro}_$${distro_version}_${KASM_VERSION}_$${arch}.rpm"
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install_rpm "$base_url/$bin_name"
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;;
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alpine)
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bin_name="kasmvnc.alpine_$${distro_version//./}_$${arch}.tgz"
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install_alpine "$base_url/$bin_name"
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;;
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*)
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echo "Unsupported distribution: $distro"
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exit 1
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;;
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esac
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else
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echo "vncserver already installed. Skipping installation."
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fi
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if command -v sudo &> /dev/null && sudo -n true 2> /dev/null; then
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kasm_config_file="/etc/kasmvnc/kasmvnc.yaml"
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SUDO=sudo
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else
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kasm_config_file="$HOME/.vnc/kasmvnc.yaml"
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SUDO=
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echo "WARNING: Sudo access not available, using user config dir!"
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if [[ -f "$kasm_config_file" ]]; then
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echo "WARNING: Custom user KasmVNC config exists, not overwriting!"
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echo "WARNING: Ensure that you manually configure the appropriate settings."
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kasm_config_file="/dev/stderr"
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else
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echo "WARNING: This may prevent custom user KasmVNC settings from applying!"
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mkdir -p "$HOME/.vnc"
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fi
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fi
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echo "Writing KasmVNC config to $kasm_config_file"
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$SUDO tee "$kasm_config_file" > /dev/null << EOF
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network:
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protocol: http
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websocket_port: ${PORT}
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ssl:
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require_ssl: false
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pem_certificate:
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pem_key:
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udp:
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public_ip: 127.0.0.1
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EOF
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# This password is not used since we start the server without auth.
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# The server is protected via the Coder session token / tunnel
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# and does not listen publicly
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echo -e "password\npassword\n" | vncpasswd -wo -u "$USER"
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# Start the server
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printf "🚀 Starting KasmVNC server...\n"
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vncserver -select-de "${DESKTOP_ENVIRONMENT}" -disableBasicAuth > /tmp/kasmvncserver.log 2>&1 &
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pid=$!
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# Wait for server to start
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sleep 5
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grep -v '^[[:space:]]*$' /tmp/kasmvncserver.log | tail -n 10
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if ps -p $pid | grep -q "^$pid"; then
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echo "ERROR: Failed to start KasmVNC server. Check full logs at /tmp/kasmvncserver.log"
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exit 1
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fi
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printf "🚀 KasmVNC server started successfully!\n"
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