mirror of
https://github.com/rcourtman/Pulse.git
synced 2026-02-18 00:17:39 +01:00
dc4669f9f6
Install script (scripts/install.sh): - Add multi-platform support: Unraid, OpenRC/Alpine, Synology DSM 6/7 - Add input validation for URL, token format, and interval - Add binary magic verification (ELF/Mach-O/PE) - Add cleanup trap for temp files - Wrap script in main() for partial download protection - Fix shellcheck compliance issues - Add curl timeouts Agent auto-update (agentupdate, dockeragent): - Enforce TLS 1.2 minimum version - Make SHA256 checksum verification mandatory - Add 100MB binary size limit - Add binary magic verification before replacement - Add Unraid persistent binary update after self-update - Add 5-minute download timeout Frontend: - Update Linux install description to note auto-detection of init systems
577 lines
18 KiB
Bash
577 lines
18 KiB
Bash
#!/usr/bin/env bash
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#
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# Pulse Unified Agent Installer
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# Supports: Linux (systemd, OpenRC), macOS (launchd), Synology DSM (6.x/7+), Unraid
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#
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# Usage:
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# curl -fsSL http://pulse/install.sh | bash -s -- --url http://pulse --token <token> [options]
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#
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# Options:
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# --enable-host Enable host metrics (default: true)
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# --enable-docker Enable docker metrics (default: false)
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# --interval <dur> Reporting interval (default: 30s)
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# --uninstall Remove the agent
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set -euo pipefail
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# Wrap entire script in a function to protect against partial download
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# See: https://www.kicksecure.com/wiki/Dev/curl_bash_pipe
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main() {
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# --- Cleanup trap ---
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TMP_FILES=()
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# shellcheck disable=SC2317 # Invoked by trap, not directly
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cleanup() {
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for f in "${TMP_FILES[@]}"; do
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rm -f "$f" 2>/dev/null || true
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done
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}
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trap cleanup EXIT
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# --- Check Root ---
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if [[ $EUID -ne 0 ]]; then
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echo "This script must be run as root. Please use sudo."
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exit 1
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fi
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# --- Configuration ---
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AGENT_NAME="pulse-agent"
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BINARY_NAME="pulse-agent"
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INSTALL_DIR="/usr/local/bin"
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LOG_FILE="/var/log/${AGENT_NAME}.log"
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# Defaults
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PULSE_URL=""
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PULSE_TOKEN=""
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INTERVAL="30s"
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ENABLE_HOST="true"
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ENABLE_DOCKER="false"
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UNINSTALL="false"
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INSECURE="false"
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# --- Helper Functions ---
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log_info() { printf "[INFO] %s\n" "$1"; }
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log_warn() { printf "[WARN] %s\n" "$1"; }
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log_error() { printf "[ERROR] %s\n" "$1"; }
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fail() {
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log_error "$1"
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if [[ -t 0 ]]; then
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read -r -p "Press Enter to exit..."
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elif [[ -e /dev/tty ]]; then
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read -r -p "Press Enter to exit..." < /dev/tty
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fi
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exit 1
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}
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# Build exec args string for use in service files
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# Returns via EXEC_ARGS variable
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build_exec_args() {
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EXEC_ARGS="--url ${PULSE_URL} --token ${PULSE_TOKEN} --interval ${INTERVAL}"
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if [[ "$ENABLE_HOST" == "true" ]]; then EXEC_ARGS="$EXEC_ARGS --enable-host"; fi
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if [[ "$ENABLE_DOCKER" == "true" ]]; then EXEC_ARGS="$EXEC_ARGS --enable-docker"; fi
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if [[ "$INSECURE" == "true" ]]; then EXEC_ARGS="$EXEC_ARGS --insecure"; fi
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}
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# Build exec args as array for direct execution (proper quoting)
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# Returns via EXEC_ARGS_ARRAY variable
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build_exec_args_array() {
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EXEC_ARGS_ARRAY=(--url "$PULSE_URL" --token "$PULSE_TOKEN" --interval "$INTERVAL")
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if [[ "$ENABLE_HOST" == "true" ]]; then EXEC_ARGS_ARRAY+=(--enable-host); fi
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if [[ "$ENABLE_DOCKER" == "true" ]]; then EXEC_ARGS_ARRAY+=(--enable-docker); fi
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if [[ "$INSECURE" == "true" ]]; then EXEC_ARGS_ARRAY+=(--insecure); fi
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}
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# --- Parse Arguments ---
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while [[ $# -gt 0 ]]; do
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case $1 in
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--url) PULSE_URL="$2"; shift 2 ;;
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--token) PULSE_TOKEN="$2"; shift 2 ;;
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--interval) INTERVAL="$2"; shift 2 ;;
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--enable-host) ENABLE_HOST="true"; shift ;;
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--disable-host) ENABLE_HOST="false"; shift ;;
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--enable-docker) ENABLE_DOCKER="true"; shift ;;
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--disable-docker) ENABLE_DOCKER="false"; shift ;;
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--insecure) INSECURE="true"; shift ;;
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--uninstall) UNINSTALL="true"; shift ;;
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*) fail "Unknown argument: $1" ;;
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esac
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done
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# --- Uninstall Logic ---
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if [[ "$UNINSTALL" == "true" ]]; then
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log_info "Uninstalling ${AGENT_NAME}..."
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# Systemd
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if command -v systemctl >/dev/null 2>&1; then
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systemctl stop "${AGENT_NAME}" 2>/dev/null || true
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systemctl disable "${AGENT_NAME}" 2>/dev/null || true
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rm -f "/etc/systemd/system/${AGENT_NAME}.service"
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systemctl daemon-reload 2>/dev/null || true
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fi
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# Launchd (macOS)
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if [[ "$(uname -s)" == "Darwin" ]]; then
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PLIST="/Library/LaunchDaemons/com.pulse.agent.plist"
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launchctl unload "$PLIST" 2>/dev/null || true
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rm -f "$PLIST"
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fi
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# Synology DSM (handles both DSM 7+ systemd and DSM 6.x upstart)
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if [[ -d /usr/syno ]]; then
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# DSM 7+ uses systemd
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if [[ -f "/etc/systemd/system/${AGENT_NAME}.service" ]]; then
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systemctl stop "${AGENT_NAME}" 2>/dev/null || true
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systemctl disable "${AGENT_NAME}" 2>/dev/null || true
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rm -f "/etc/systemd/system/${AGENT_NAME}.service"
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systemctl daemon-reload 2>/dev/null || true
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fi
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# DSM 6.x uses upstart
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if [[ -f "/etc/init/${AGENT_NAME}.conf" ]]; then
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initctl stop "${AGENT_NAME}" 2>/dev/null || true
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rm -f "/etc/init/${AGENT_NAME}.conf"
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fi
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fi
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# Unraid
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if [[ -f /etc/unraid-version ]] || [[ -d /boot/config/plugins/pulse-agent ]]; then
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log_info "Removing Unraid installation..."
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# Stop running agent
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pkill -f "pulse-agent" 2>/dev/null || true
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# Remove from /boot/config/go
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GO_SCRIPT="/boot/config/go"
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if [[ -f "$GO_SCRIPT" ]]; then
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sed -i '/# Pulse Agent/,/^$/d' "$GO_SCRIPT" 2>/dev/null || true
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sed -i '/pulse-agent/d' "$GO_SCRIPT" 2>/dev/null || true
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fi
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# Remove installation directory
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rm -rf /boot/config/plugins/pulse-agent
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# Remove symlink
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rm -f "${INSTALL_DIR}/${BINARY_NAME}"
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fi
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# OpenRC (Alpine, Gentoo, Artix, etc.)
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if command -v rc-service >/dev/null 2>&1; then
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rc-service "${AGENT_NAME}" stop 2>/dev/null || true
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rc-update del "${AGENT_NAME}" default 2>/dev/null || true
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rm -f "/etc/init.d/${AGENT_NAME}"
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fi
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rm -f "${INSTALL_DIR}/${BINARY_NAME}"
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log_info "Uninstallation complete."
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exit 0
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fi
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# --- Validation ---
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if [[ -z "$PULSE_URL" || -z "$PULSE_TOKEN" ]]; then
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fail "Missing required arguments: --url and --token"
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fi
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# Validate URL format (basic check)
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if [[ ! "$PULSE_URL" =~ ^https?:// ]]; then
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fail "Invalid URL format. Must start with http:// or https://"
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fi
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# Validate token format (should be hex string, typically 64 chars)
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if [[ ! "$PULSE_TOKEN" =~ ^[a-fA-F0-9]+$ ]]; then
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fail "Invalid token format. Token should be a hexadecimal string."
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fi
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# Validate interval format
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if [[ ! "$INTERVAL" =~ ^[0-9]+[smh]?$ ]]; then
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fail "Invalid interval format. Use format like '30s', '5m', or '1h'."
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fi
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# --- Download ---
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OS=$(uname -s | tr '[:upper:]' '[:lower:]')
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ARCH=$(uname -m)
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case "$ARCH" in
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x86_64) ARCH="amd64" ;;
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aarch64|arm64) ARCH="arm64" ;;
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armv7l|armhf) ARCH="armv7" ;;
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armv6l) ARCH="armv6" ;;
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i386|i686) ARCH="386" ;;
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*) fail "Unsupported architecture: $ARCH" ;;
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esac
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# Construct arch param in format expected by download endpoint (e.g., linux-amd64)
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ARCH_PARAM="${OS}-${ARCH}"
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DOWNLOAD_URL="${PULSE_URL}/download/${BINARY_NAME}?arch=${ARCH_PARAM}"
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log_info "Downloading agent from ${DOWNLOAD_URL}..."
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# Create temp file and register for cleanup
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TMP_BIN=$(mktemp)
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TMP_FILES+=("$TMP_BIN")
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# Build curl arguments as array for proper quoting
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CURL_ARGS=(-fsSL --connect-timeout 30 --max-time 300)
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if [[ "$INSECURE" == "true" ]]; then CURL_ARGS+=(-k); fi
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if ! curl "${CURL_ARGS[@]}" -o "$TMP_BIN" "$DOWNLOAD_URL"; then
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fail "Download failed. Check URL and connectivity."
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fi
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# Verify downloaded binary
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if [[ ! -s "$TMP_BIN" ]]; then
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fail "Downloaded file is empty."
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fi
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# Check if it's a valid executable (ELF for Linux, Mach-O for macOS)
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if [[ "$OS" == "linux" ]]; then
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if ! head -c 4 "$TMP_BIN" | grep -q "ELF"; then
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fail "Downloaded file is not a valid Linux executable."
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fi
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elif [[ "$OS" == "darwin" ]]; then
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# Mach-O magic: feedface (32-bit) or feedfacf (64-bit) or cafebabe (universal)
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MAGIC=$(xxd -p -l 4 "$TMP_BIN" 2>/dev/null || head -c 4 "$TMP_BIN" | od -A n -t x1 | tr -d ' ')
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if [[ ! "$MAGIC" =~ ^(cffaedfe|cefaedfe|cafebabe|feedface|feedfacf) ]]; then
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fail "Downloaded file is not a valid macOS executable."
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fi
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fi
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chmod +x "$TMP_BIN"
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# Install Binary
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log_info "Installing binary to ${INSTALL_DIR}/${BINARY_NAME}..."
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mkdir -p "$INSTALL_DIR"
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mv "$TMP_BIN" "${INSTALL_DIR}/${BINARY_NAME}"
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chmod +x "${INSTALL_DIR}/${BINARY_NAME}"
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# --- Legacy Cleanup ---
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# Remove old agents if they exist to prevent conflicts
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log_info "Checking for legacy agents..."
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# Legacy Host Agent
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if command -v systemctl >/dev/null 2>&1; then
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if systemctl is-active --quiet pulse-host-agent 2>/dev/null || systemctl is-enabled --quiet pulse-host-agent 2>/dev/null; then
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log_warn "Removing legacy pulse-host-agent..."
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systemctl stop pulse-host-agent 2>/dev/null || true
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systemctl disable pulse-host-agent 2>/dev/null || true
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rm -f /etc/systemd/system/pulse-host-agent.service
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rm -f /usr/local/bin/pulse-host-agent
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fi
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if systemctl is-active --quiet pulse-docker-agent 2>/dev/null || systemctl is-enabled --quiet pulse-docker-agent 2>/dev/null; then
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log_warn "Removing legacy pulse-docker-agent..."
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systemctl stop pulse-docker-agent 2>/dev/null || true
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systemctl disable pulse-docker-agent 2>/dev/null || true
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rm -f /etc/systemd/system/pulse-docker-agent.service
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rm -f /usr/local/bin/pulse-docker-agent
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fi
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systemctl daemon-reload 2>/dev/null || true
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fi
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# Legacy macOS
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if [[ "$OS" == "darwin" ]]; then
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if launchctl list | grep -q "com.pulse.host-agent"; then
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log_warn "Removing legacy com.pulse.host-agent..."
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launchctl unload /Library/LaunchDaemons/com.pulse.host-agent.plist 2>/dev/null || true
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rm -f /Library/LaunchDaemons/com.pulse.host-agent.plist
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rm -f /usr/local/bin/pulse-host-agent
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fi
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if launchctl list | grep -q "com.pulse.docker-agent"; then
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log_warn "Removing legacy com.pulse.docker-agent..."
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launchctl unload /Library/LaunchDaemons/com.pulse.docker-agent.plist 2>/dev/null || true
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rm -f /Library/LaunchDaemons/com.pulse.docker-agent.plist
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rm -f /usr/local/bin/pulse-docker-agent
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fi
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fi
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# --- Service Installation ---
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# 1. macOS (Launchd)
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if [[ "$OS" == "darwin" ]]; then
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PLIST="/Library/LaunchDaemons/com.pulse.agent.plist"
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log_info "Configuring Launchd service at $PLIST..."
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# Build program arguments array
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PLIST_ARGS=" <string>${INSTALL_DIR}/${BINARY_NAME}</string>
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<string>--url</string>
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<string>${PULSE_URL}</string>
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<string>--token</string>
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<string>${PULSE_TOKEN}</string>
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<string>--interval</string>
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<string>${INTERVAL}</string>"
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if [[ "$ENABLE_HOST" == "true" ]]; then
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PLIST_ARGS="${PLIST_ARGS}
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<string>--enable-host</string>"
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fi
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if [[ "$ENABLE_DOCKER" == "true" ]]; then
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PLIST_ARGS="${PLIST_ARGS}
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<string>--enable-docker</string>"
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fi
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if [[ "$INSECURE" == "true" ]]; then
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PLIST_ARGS="${PLIST_ARGS}
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<string>--insecure</string>"
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fi
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cat > "$PLIST" <<EOF
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>Label</key>
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<string>com.pulse.agent</string>
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<key>ProgramArguments</key>
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<array>
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${PLIST_ARGS}
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</array>
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<key>RunAtLoad</key>
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<true/>
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<key>KeepAlive</key>
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<true/>
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<key>StandardOutPath</key>
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<string>${LOG_FILE}</string>
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<key>StandardErrorPath</key>
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<string>${LOG_FILE}</string>
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</dict>
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</plist>
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EOF
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chmod 644 "$PLIST"
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launchctl unload "$PLIST" 2>/dev/null || true
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launchctl load -w "$PLIST"
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log_info "Service started."
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exit 0
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fi
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# 2. Synology DSM
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# DSM 7+ uses systemd, DSM 6.x uses upstart
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if [[ -d /usr/syno ]] && [[ -f /etc/VERSION ]]; then
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# Extract major version from /etc/VERSION
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DSM_MAJOR=$(grep 'majorversion=' /etc/VERSION | cut -d'"' -f2)
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log_info "Detected Synology DSM ${DSM_MAJOR}..."
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# Build command line args
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build_exec_args
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if [[ "$DSM_MAJOR" -ge 7 ]]; then
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# DSM 7+ uses systemd
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UNIT="/etc/systemd/system/${AGENT_NAME}.service"
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log_info "Configuring systemd service at $UNIT (DSM 7+)..."
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cat > "$UNIT" <<EOF
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[Unit]
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Description=Pulse Unified Agent
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After=network.target
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StartLimitIntervalSec=0
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[Service]
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Type=simple
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ExecStart=${INSTALL_DIR}/${BINARY_NAME} ${EXEC_ARGS}
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Restart=always
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RestartSec=5s
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[Install]
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WantedBy=multi-user.target
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EOF
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systemctl daemon-reload
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systemctl enable "${AGENT_NAME}"
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systemctl restart "${AGENT_NAME}"
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else
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# DSM 6.x uses upstart
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CONF="/etc/init/${AGENT_NAME}.conf"
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log_info "Configuring Upstart service at $CONF (DSM 6.x)..."
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cat > "$CONF" <<EOF
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description "Pulse Unified Agent"
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author "Pulse"
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start on syno.network.ready
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stop on runlevel [06]
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respawn
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respawn limit 5 10
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exec ${INSTALL_DIR}/${BINARY_NAME} ${EXEC_ARGS} >> ${LOG_FILE} 2>&1
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EOF
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initctl stop "${AGENT_NAME}" 2>/dev/null || true
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initctl start "${AGENT_NAME}"
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fi
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log_info "Service started."
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exit 0
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fi
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# 3. Unraid (no init system - use /boot/config/go script)
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# Detect Unraid by /etc/unraid-version (preferred) or /boot/config/go with unraid markers
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if [[ -f /etc/unraid-version ]]; then
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log_info "Detected Unraid system..."
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# Unraid's /boot is FAT32 (no execute permission), so we store the binary there
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# for persistence but copy it to RAM disk (/usr/local/bin) for execution
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UNRAID_STORAGE_DIR="/boot/config/plugins/pulse-agent"
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UNRAID_STORED_BINARY="${UNRAID_STORAGE_DIR}/${BINARY_NAME}"
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RUNTIME_BINARY="${INSTALL_DIR}/${BINARY_NAME}"
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GO_SCRIPT="/boot/config/go"
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mkdir -p "$UNRAID_STORAGE_DIR"
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# Copy binary to persistent storage (for survival across reboots)
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cp "${RUNTIME_BINARY}" "$UNRAID_STORED_BINARY"
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# Keep binary in /usr/local/bin (RAM disk) with execute permission for runtime
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chmod +x "${RUNTIME_BINARY}"
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log_info "Installed binary to ${UNRAID_STORED_BINARY} (persistent) and ${RUNTIME_BINARY} (runtime)..."
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# Build command line args (string for wrapper script, array for direct execution)
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build_exec_args
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build_exec_args_array
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# Kill any existing pulse agents (legacy or current)
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log_info "Stopping any existing pulse agents..."
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# Use process name matching to avoid killing unrelated processes
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pkill -f "^${RUNTIME_BINARY}" 2>/dev/null || true
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pkill -f "^/usr/local/bin/pulse-host-agent" 2>/dev/null || true
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pkill -f "^/usr/local/bin/pulse-docker-agent" 2>/dev/null || true
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sleep 2
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# Clean up legacy binaries from RAM disk
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rm -f /usr/local/bin/pulse-host-agent 2>/dev/null || true
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rm -f /usr/local/bin/pulse-docker-agent 2>/dev/null || true
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# Create a wrapper script that will be called from /boot/config/go
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# This script copies from persistent storage to RAM disk on boot, then starts the agent
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WRAPPER_SCRIPT="${UNRAID_STORAGE_DIR}/start-pulse-agent.sh"
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cat > "$WRAPPER_SCRIPT" <<EOF
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#!/bin/bash
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# Pulse Agent startup script for Unraid
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# Auto-generated by Pulse installer
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# Kill any existing pulse-agent processes
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pkill -f "^${RUNTIME_BINARY}" 2>/dev/null || true
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pkill -f "^/usr/local/bin/pulse-host-agent" 2>/dev/null || true
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pkill -f "^/usr/local/bin/pulse-docker-agent" 2>/dev/null || true
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sleep 2
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# Copy binary from persistent storage to RAM disk (needed after reboot)
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cp "${UNRAID_STORED_BINARY}" "${RUNTIME_BINARY}"
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chmod +x "${RUNTIME_BINARY}"
|
|
|
|
# Start the agent in the background
|
|
nohup ${RUNTIME_BINARY} ${EXEC_ARGS} >> /var/log/${AGENT_NAME}.log 2>&1 &
|
|
EOF
|
|
|
|
# Add to /boot/config/go if not already present
|
|
GO_MARKER="# Pulse Agent"
|
|
if [[ -f "$GO_SCRIPT" ]]; then
|
|
# Remove any existing Pulse agent entries
|
|
sed -i "/${GO_MARKER}/,/^$/d" "$GO_SCRIPT" 2>/dev/null || true
|
|
sed -i '/pulse-agent/d' "$GO_SCRIPT" 2>/dev/null || true
|
|
else
|
|
# Create go script if it doesn't exist
|
|
echo "#!/bin/bash" > "$GO_SCRIPT"
|
|
chmod +x "$GO_SCRIPT"
|
|
fi
|
|
|
|
# Append startup entry (use bash explicitly since /boot is FAT32 and doesn't support execute bits)
|
|
cat >> "$GO_SCRIPT" <<EOF
|
|
|
|
${GO_MARKER}
|
|
bash ${WRAPPER_SCRIPT}
|
|
|
|
EOF
|
|
|
|
log_info "Added startup entry to ${GO_SCRIPT}..."
|
|
|
|
# Start the agent now (use array for proper argument handling)
|
|
log_info "Starting agent..."
|
|
nohup "${RUNTIME_BINARY}" "${EXEC_ARGS_ARRAY[@]}" >> "/var/log/${AGENT_NAME}.log" 2>&1 &
|
|
|
|
log_info "Installation complete!"
|
|
log_info "The agent will start automatically on boot."
|
|
log_info "To check status: pgrep -a pulse-agent"
|
|
log_info "To view logs: tail -f /var/log/${AGENT_NAME}.log"
|
|
exit 0
|
|
fi
|
|
|
|
# 4. OpenRC (Alpine, Gentoo, Artix, etc.)
|
|
# Check for rc-service but make sure we're not on a systemd system that happens to have it
|
|
if command -v rc-service >/dev/null 2>&1 && [[ -d /etc/init.d ]] && ! command -v systemctl >/dev/null 2>&1; then
|
|
INITSCRIPT="/etc/init.d/${AGENT_NAME}"
|
|
log_info "Configuring OpenRC service at $INITSCRIPT..."
|
|
|
|
# Build command line args
|
|
build_exec_args
|
|
|
|
# Create OpenRC init script following Alpine best practices
|
|
# Using command_background=yes with pidfile for proper daemon management
|
|
cat > "$INITSCRIPT" <<'INITEOF'
|
|
#!/sbin/openrc-run
|
|
# Pulse Unified Agent OpenRC init script
|
|
|
|
name="pulse-agent"
|
|
description="Pulse Unified Agent"
|
|
|
|
command="INSTALL_DIR_PLACEHOLDER/BINARY_NAME_PLACEHOLDER"
|
|
command_args="EXEC_ARGS_PLACEHOLDER"
|
|
command_background="yes"
|
|
command_user="root"
|
|
|
|
pidfile="/run/${RC_SVCNAME}.pid"
|
|
output_log="/var/log/pulse-agent.log"
|
|
error_log="/var/log/pulse-agent.log"
|
|
|
|
# Ensure log file exists
|
|
start_pre() {
|
|
touch "$output_log"
|
|
}
|
|
|
|
depend() {
|
|
need net
|
|
use docker
|
|
}
|
|
INITEOF
|
|
|
|
# Replace placeholders with actual values
|
|
sed -i "s|INSTALL_DIR_PLACEHOLDER|${INSTALL_DIR}|g" "$INITSCRIPT"
|
|
sed -i "s|BINARY_NAME_PLACEHOLDER|${BINARY_NAME}|g" "$INITSCRIPT"
|
|
sed -i "s|EXEC_ARGS_PLACEHOLDER|${EXEC_ARGS}|g" "$INITSCRIPT"
|
|
|
|
chmod +x "$INITSCRIPT"
|
|
rc-service "${AGENT_NAME}" stop 2>/dev/null || true
|
|
rc-update add "${AGENT_NAME}" default 2>/dev/null || true
|
|
rc-service "${AGENT_NAME}" start
|
|
log_info "Service started."
|
|
exit 0
|
|
fi
|
|
|
|
# 5. Linux (Systemd)
|
|
if command -v systemctl >/dev/null 2>&1; then
|
|
UNIT="/etc/systemd/system/${AGENT_NAME}.service"
|
|
log_info "Configuring Systemd service at $UNIT..."
|
|
|
|
# Build command line args
|
|
build_exec_args
|
|
|
|
cat > "$UNIT" <<EOF
|
|
[Unit]
|
|
Description=Pulse Unified Agent
|
|
After=network-online.target docker.service
|
|
Wants=network-online.target
|
|
StartLimitIntervalSec=0
|
|
|
|
[Service]
|
|
Type=simple
|
|
ExecStart=${INSTALL_DIR}/${BINARY_NAME} ${EXEC_ARGS}
|
|
Restart=always
|
|
RestartSec=5s
|
|
User=root
|
|
|
|
[Install]
|
|
WantedBy=multi-user.target
|
|
EOF
|
|
systemctl daemon-reload
|
|
systemctl enable "${AGENT_NAME}"
|
|
systemctl restart "${AGENT_NAME}"
|
|
log_info "Service started."
|
|
exit 0
|
|
fi
|
|
|
|
fail "Could not detect a supported service manager (systemd, OpenRC, launchd, or Unraid)."
|
|
|
|
}
|
|
|
|
# Call main function with all arguments
|
|
main "$@"
|