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patchmon.net/agents/direct_host_auto_enroll.sh
2025-11-14 22:53:48 +00:00

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#!/bin/sh
# PatchMon Direct Host Auto-Enrollment Script
# POSIX-compliant shell script (works with dash, ash, bash, etc.)
# Usage: curl -s "https://patchmon.example.com/api/v1/auto-enrollment/script?type=direct-host&token_key=KEY&token_secret=SECRET" | sh
set -e
SCRIPT_VERSION="1.0.0"
# =============================================================================
# PatchMon Direct Host Auto-Enrollment Script
# =============================================================================
# This script automatically enrolls the current host into PatchMon for patch
# management.
#
# Usage:
# curl -s "https://patchmon.example.com/api/v1/auto-enrollment/script?type=direct-host&token_key=KEY&token_secret=SECRET" | sh
#
# Requirements:
# - Run as root or with sudo
# - Auto-enrollment token from PatchMon
# - Network access to PatchMon server
# =============================================================================
# ===== CONFIGURATION =====
PATCHMON_URL="${PATCHMON_URL:-https://patchmon.example.com}"
AUTO_ENROLLMENT_KEY="${AUTO_ENROLLMENT_KEY:-}"
AUTO_ENROLLMENT_SECRET="${AUTO_ENROLLMENT_SECRET:-}"
CURL_FLAGS="${CURL_FLAGS:--s}"
FORCE_INSTALL="${FORCE_INSTALL:-false}"
# ===== COLOR OUTPUT =====
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color
# ===== LOGGING FUNCTIONS =====
info() { printf "%b\n" "${GREEN}[INFO]${NC} $1"; }
warn() { printf "%b\n" "${YELLOW}[WARN]${NC} $1"; }
error() { printf "%b\n" "${RED}[ERROR]${NC} $1" >&2; exit 1; }
success() { printf "%b\n" "${GREEN}[SUCCESS]${NC} $1"; }
debug() { [ "${DEBUG:-false}" = "true" ] && printf "%b\n" "${BLUE}[DEBUG]${NC} $1" || true; }
# ===== BANNER =====
cat << "EOF"
╔═══════════════════════════════════════════════════════════════╗
║ ║
║ ____ _ _ __ __ ║
| _ \ __ _| |_ ___| |__ | \/ | ___ _ __ ║
| |_) / _` | __/ __| '_ \| |\/| |/ _ \| '_ \
| __/ (_| | || (__| | | | | | | (_) | | | |
|_| \__,_|\__\___|_| |_|_| |_|\___/|_| |_|
║ ║
║ Direct Host Auto-Enrollment Script ║
║ ║
╚═══════════════════════════════════════════════════════════════╝
EOF
echo ""
# ===== VALIDATION =====
info "Validating configuration..."
if [ -z "$AUTO_ENROLLMENT_KEY" ] || [ -z "$AUTO_ENROLLMENT_SECRET" ]; then
error "AUTO_ENROLLMENT_KEY and AUTO_ENROLLMENT_SECRET must be set"
fi
if [ -z "$PATCHMON_URL" ]; then
error "PATCHMON_URL must be set"
fi
# Check if running as root
if [ "$(id -u)" -ne 0 ]; then
error "This script must be run as root (use sudo)"
fi
# Check for required commands
for cmd in curl; do
if ! command -v $cmd &> /dev/null; then
error "Required command '$cmd' not found. Please install it first."
fi
done
info "Configuration validated successfully"
info "PatchMon Server: $PATCHMON_URL"
echo ""
# ===== GATHER HOST INFORMATION =====
info "Gathering host information..."
# Get hostname
hostname=$(hostname)
friendly_name="$hostname"
# Try to get machine_id (optional, for tracking)
machine_id=""
if [ -f /etc/machine-id ]; then
machine_id=$(cat /etc/machine-id 2>/dev/null || echo "")
elif [ -f /var/lib/dbus/machine-id ]; then
machine_id=$(cat /var/lib/dbus/machine-id 2>/dev/null || echo "")
fi
# Get OS information
os_info="unknown"
if [ -f /etc/os-release ]; then
os_info=$(grep "^PRETTY_NAME=" /etc/os-release 2>/dev/null | cut -d'"' -f2 || echo "unknown")
fi
# Get IP address (first non-loopback)
ip_address=$(hostname -I 2>/dev/null | awk '{print $1}' || echo "unknown")
# Detect architecture
arch_raw=$(uname -m 2>/dev/null || echo "unknown")
case "$arch_raw" in
"x86_64")
architecture="amd64"
;;
"i386"|"i686")
architecture="386"
;;
"aarch64"|"arm64")
architecture="arm64"
;;
"armv7l"|"armv6l"|"arm")
architecture="arm"
;;
*)
warn " ⚠ Unknown architecture '$arch_raw', defaulting to amd64"
architecture="amd64"
;;
esac
info "Hostname: $hostname"
info "IP Address: $ip_address"
info "OS: $os_info"
info "Architecture: $architecture"
if [ -n "$machine_id" ]; then
# POSIX-compliant substring (first 16 chars)
machine_id_short=$(printf "%.16s" "$machine_id")
info "Machine ID: ${machine_id_short}..."
else
info "Machine ID: (not available)"
fi
echo ""
# ===== CHECK IF AGENT ALREADY INSTALLED =====
info "Checking if agent is already configured..."
config_check=$(sh -c "
if [ -f /etc/patchmon/config.yml ] && [ -f /etc/patchmon/credentials.yml ]; then
if [ -f /usr/local/bin/patchmon-agent ]; then
# Try to ping using existing configuration
if /usr/local/bin/patchmon-agent ping >/dev/null 2>&1; then
echo 'ping_success'
else
echo 'ping_failed'
fi
else
echo 'binary_missing'
fi
else
echo 'not_configured'
fi
" 2>/dev/null || echo "error")
if [ "$config_check" = "ping_success" ]; then
success "Host already enrolled and agent ping successful - nothing to do"
exit 0
elif [ "$config_check" = "ping_failed" ]; then
warn "Agent configuration exists but ping failed - will reinstall"
elif [ "$config_check" = "binary_missing" ]; then
warn "Config exists but agent binary missing - will reinstall"
elif [ "$config_check" = "not_configured" ]; then
info "Agent not yet configured - proceeding with enrollment"
else
warn "Could not check agent status - proceeding with enrollment"
fi
echo ""
# ===== ENROLL HOST =====
info "Enrolling $friendly_name in PatchMon..."
# Build JSON payload
json_payload=$(cat <<EOF
{
"friendly_name": "$friendly_name",
"metadata": {
"hostname": "$hostname",
"ip_address": "$ip_address",
"os_info": "$os_info",
"architecture": "$architecture"
}
}
EOF
)
# Add machine_id if available
if [ -n "$machine_id" ]; then
json_payload=$(echo "$json_payload" | sed "s/\"friendly_name\"/\"machine_id\": \"$machine_id\",\n \"friendly_name\"/")
fi
response=$(curl $CURL_FLAGS -X POST \
-H "X-Auto-Enrollment-Key: $AUTO_ENROLLMENT_KEY" \
-H "X-Auto-Enrollment-Secret: $AUTO_ENROLLMENT_SECRET" \
-H "Content-Type: application/json" \
-d "$json_payload" \
"$PATCHMON_URL/api/v1/auto-enrollment/enroll" \
-w "\n%{http_code}" 2>&1)
http_code=$(echo "$response" | tail -n 1)
body=$(echo "$response" | sed '$d')
if [ "$http_code" = "201" ]; then
# Use grep and cut instead of jq since jq may not be installed
api_id=$(echo "$body" | grep -o '"api_id":"[^"]*' | cut -d'"' -f4 || echo "")
api_key=$(echo "$body" | grep -o '"api_key":"[^"]*' | cut -d'"' -f4 || echo "")
if [ -z "$api_id" ] || [ -z "$api_key" ]; then
error "Failed to parse API credentials from response"
fi
success "Host enrolled successfully: $api_id"
echo ""
# ===== INSTALL AGENT =====
info "Installing PatchMon agent..."
# Build install URL with force flag and architecture
install_url="$PATCHMON_URL/api/v1/hosts/install?arch=$architecture"
if [ "$FORCE_INSTALL" = "true" ]; then
install_url="$install_url&force=true"
info "Using force mode - will bypass broken packages"
fi
info "Using architecture: $architecture"
# Download and execute installation script
install_exit_code=0
install_output=$(curl $CURL_FLAGS \
-H "X-API-ID: $api_id" \
-H "X-API-KEY: $api_key" \
"$install_url" | sh 2>&1) || install_exit_code=$?
# Check both exit code AND success message in output
if [ "$install_exit_code" -eq 0 ] || echo "$install_output" | grep -q "PatchMon Agent installation completed successfully"; then
success "Agent installed successfully"
else
error "Failed to install agent (exit: $install_exit_code)"
fi
else
printf "%b\n" "${RED}[ERROR]${NC} Failed to enroll $friendly_name - HTTP $http_code" >&2
printf "%b\n" "Response: $body" >&2
exit 1
fi
echo ""
success "Auto-enrollment complete!"
exit 0