headlessvnc : ré-écriture complète

bin/headlessvnc

@@ -1,107 +1,59 @@
-#!/bin/bash
+#!/usr/bin/env sh
-
+perror() {
-# cd to the local VNC directory, exit if it fails
+  >&2 printf '\033[1;31mERROR:\033[0m \033[1m%s\033[0m\n' "$*"
-cd "${HOME}/.vnc" || exit 5
-
-# Variable
-verbs="start status stop restart help"
-
-# echo bold text
-echobf() {
-    printf '\033[1m%s\033[0m\n' "$*"
 }
 
-# Print an error message
+error_usage() {
-print_error() {
+  perror "invalid usage"
-    (
+  >&2 usage
-        printf '\033[1;31m%s\033[0m ' "ERROR:"
+
-        echobf "$*"
+  exit 1
-    ) > /dev/stderr
 }
 
-# Print an error and exit
-error() {
-    print_error "$1"
-    shift
-    exit "$1"
-}
-
-# Check if the VNC server is running
 is_running() {
   vncserver -list | grep -q '^:1'
 }
 
-# Show a help message
+start() {
-public_help() {
-    local name
-    name="$(basename "$0")"
-    cat << EOF
-${name} - Start a VNC server
-
-Usage:
-    ${name} ${verbs// /|}
-EOF
-}
-
-# Show the same help with an error
-error_help() {
-    print_error "Invalid usage"
-    >&2 public_help
-    return 1
-}
-
-# Start the VNC server
-public_start() {
   if ! is_running; then
-        set -e
+    set -- vncserver \
-        vncserver \
+      -localhost -alwaysshared \
-            -xstartup ./xstartup \
+      -securitytypes none
-            -localhost \
+    [ -x ~/.vnc/xstartup ] && set -- "$@" -xstartup ~/.vnc/xstartup
-            -alwaysshared \
+
-            -securitytypes none \
+    "$@"
-            -nocursor \
-            -geometry 1600x900
   else
-        error "The VNC server is already running!" 4
+    perror "server already started"
+    exit 2
   fi
 }
 
-# Check if the server is running
+stop() {
-public_status() {
-    if is_running; then
-        echobf "The VNC server is running."
-        tail "./$(cat /proc/sys/kernel/hostname):1.log" | sed 's/^/\t/g'
-    else
-        echobf "The VNC server is not running."
-    fi
-}
-
-# Stop the VNC server
-public_stop() {
   if is_running; then
     vncserver -kill :1
   else
-        error "The VNC server is not running!" 3
+    perror "server is not running"
+    exit 2
   fi
 }
 
-# Restart the VNC server
+status() {
-public_restart() {
+  if is_running; then
-    public_stop
+    printf '\033[1;32m*\033[0m \033[1m%s\n' "the server is running"
-    public_start
+  else
+    printf '\033[1;31m*\033[0m \033[1m%s\n' "the server is not running"
+  fi
 }
 
-# Parse argument
+case "$1" in
-if [ -n "$1" ]; then
+  ""|status) status ;;
-    arg="$1"
+  start) start ;;
-else
+  stop)  stop  ;;
-    arg=status
+  restart)
-fi
+    stop
-
+    start
-# Main switch
+    ;;
-if echo "$verbs" | tr ' ' '\n' | grep -q "$arg"; then
+  *)
-    "public_${arg}"
+    error_usage
-else
+    ;;
-    error_help
+esac
-fi
-