update agent install script arg parsing

supplemental/scripts/install-agent.sh

@@ -7,41 +7,11 @@ UNINSTALL=false
 CHINA_MAINLAND=false
 GITHUB_URL="https://github.com"
 GITHUB_API_URL="https://api.github.com"
+KEY=""
 
-# Read command line options
-TEMP=$(getopt -o 'k:p:uh' --long 'china-mirrors,help' -n 'install-agent.sh' -- "$@")
-
-if [ $? -ne 0 ]; then
-  echo 'Failed to parse command line arguments' >&2
-  exit 1
-fi
-
-eval set -- "$TEMP"
-unset TEMP
-
-while true; do
+# Check for help flag first
 case "$1" in
-    '-k')
-      KEY="$2"
-      shift 2
-      continue
-      ;;
-    '-p')
-      PORT="$2"
-      shift 2
-      continue
-      ;;
-    '-u')
-      UNINSTALL=true
-      shift
-      continue
-      ;;
-    '--china-mirrors')
-      CHINA_MAINLAND=true
-      shift
-      continue
-      ;;
-    '-h'|'--help')
+-h | --help)
   printf "Beszel Agent installation script\n\n"
   printf "Usage: ./install-agent.sh [options]\n\n"
   printf "Options: \n"
@@ -52,21 +22,26 @@ while true; do
   printf "  -h, --help        : Display this help message\n"
   exit 0
   ;;
-    '--')
-      shift
-      break
-      ;;
-    *)
-      echo "Invalid option: $1" >&2
-      exit 1
-      ;;
 esac
-done
 
-# Check if running as root
+# Build sudo args by properly quoting everything
+build_sudo_args() {
+  QUOTED_ARGS=""
+  while [ $# -gt 0 ]; do
+    if [ -n "$QUOTED_ARGS" ]; then
+      QUOTED_ARGS="$QUOTED_ARGS "
+    fi
+    QUOTED_ARGS="$QUOTED_ARGS'$(echo "$1" | sed "s/'/'\\\\''/g")'"
+    shift
+  done
+  echo "$QUOTED_ARGS"
+}
+
+# Check if running as root and re-execute with sudo if needed
 if [ "$(id -u)" != "0" ]; then
   if command -v sudo >/dev/null 2>&1; then
-        exec sudo "$0" "$@"
+    SUDO_ARGS=$(build_sudo_args "$@")
+    eval "exec sudo $0 $SUDO_ARGS"
   else
     echo "This script must be run as root. Please either:"
     echo "1. Run this script as root (su root)"
@@ -75,6 +50,31 @@ if [ "$(id -u)" != "0" ]; then
   fi
 fi
 
+# Parse arguments
+while [ $# -gt 0 ]; do
+  case "$1" in
+  -k)
+    shift
+    KEY="$1"
+    ;;
+  -p)
+    shift
+    PORT="$1"
+    ;;
+  -u)
+    UNINSTALL=true
+    ;;
+  --china-mirrors)
+    CHINA_MAINLAND=true
+    ;;
+  *)
+    echo "Invalid option: $1" >&2
+    exit 1
+    ;;
+  esac
+  shift
+done
+
 # Uninstall process
 if [ "$UNINSTALL" = true ]; then
   echo "Stopping and disabling the agent service..."