Release new version 2.13.0

[grml-scripts.git] / usr_bin / grml-lock

diff --git a/usr_bin/grml-lock b/usr_bin/grml-lock
index dd97c75..46e0ab5 100755 (executable)
--- a/usr_bin/grml-lock
+++ b/usr_bin/grml-lock
@@ -1,4 +1,4 @@
-#!/bin/zsh
+#!/bin/bash
 # Filename:      grml-lock
 # Purpose:       lock console
 # Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
@@ -6,7 +6,7 @@
 # License:       This file is licensed under the GPL v2.
 ################################################################################
 
-PN="$0"
+PN="$(basename "$0")"
 
 [ -n "$USER" ] || USER=grml
 
@@ -14,23 +14,50 @@ if [ "$1" = "-h" ] || [ "$1" = "--help" ] ; then
   echo "${PN}: wrapper script to lock desktop
 
 This script is a wrapper to lock your desktop session
-through the vlock application.
+through the physlock application.
 
 Usage: just execute $PN without any further options."
   exit 0
 fi
+
 if [ -r /etc/grml/script-functions ] ; then
+   # shellcheck disable=SC1091
    . /etc/grml/script-functions
-   check4progs vlock sudo chpasswd dialog || { echo "Sorry, can't continue. Exiting.">&2 ; exit 1 }
+   check4progs physlock sudo chpasswd dialog || { echo "Sorry, necessary tools missing - can not continue. Exiting.">&2 ; exit 1 ; }
+fi
+
+PWD_TEXT1="Set password (hidden typing):"
+PWD_TEXT2="Retype new password:"
+
+# by default use console frontend
+DIALOG='dialog'
+PWD_CMD="dialog --stdout --title $PN --passwordbox"
+
+GUI=false
+# only when using X and zenity is available use graphical frontend
+if [ -n "${DISPLAY}" ] && [ -x "$(command -v zenity)" ] ; then
+  DIALOG='zenity'
+  PWD_CMD="zenity --title $PN --entry --hide-text"
+  GUI=true
 fi
 
 if ! [ -r /etc/grml_version ] ; then
-  dialog --stdout --title "$PN" --msgbox "Warning: this system does not look like a grml (based) system
-and therefore might not work as intended." 7 70
+  if [ "${GUI}" = true ] ; then
+    $DIALOG --no-wrap --title "$PN" --warning --text "Warning: this system does not look like a Grml (based) system,\n
+    and therefore might not work as intended."
+  else
+    $DIALOG --title "$PN" --msgbox "Warning: this system does not look like a Grml (based) system
+    and therefore might not work as intended." 7 70
+  fi
 fi
 
 lock_desktop() {
-  vlock -a -n -s
+  # be backwards compatible, see https://github.com/grml/grml/issues/87
+  if physlock --help 2>&1 | grep -q -- '-u user' ; then
+    sudo physlock -u "$USER"
+  else
+    sudo physlock
+  fi
 }
 
 is_passwd_set() {
@@ -42,19 +69,45 @@ is_passwd_set() {
 }
 
 set_passwd() {
-  PASSWD1=$(dialog --stdout --title "$PN" --passwordbox "Set password (hidden typing):" 0 0)
-  PASSWD2=$(dialog --stdout --title "$PN" --passwordbox "Retype new password:" 0 0)
+  if [ "${GUI}" = true ] ; then
+    PASSWD1="$($PWD_CMD --text="$PWD_TEXT1")"
+    PASSWD2="$($PWD_CMD --text="$PWD_TEXT2")"
+  else
+    PASSWD1="$($PWD_CMD "$PWD_TEXT1" 0 0)"
+    PASSWD2="$($PWD_CMD "$PWD_TEXT2" 0 0)"
+  fi
+
+  if [ -z "$PASSWD1" ] ; then
+    if [ -n "${GUI}" ] ; then
+      $DIALOG --title "$PN" --error --text "Error retrieving password. Exiting."
+    else
+      $DIALOG --title "$PN" --msgbox "Error retrieving password. Exiting." 0 0
+    fi
+    exit 1
+  fi
+
   if [ "$PASSWD1" = "$PASSWD2" ] ; then
     echo "$USER:$PASSWD2" | sudo chpasswd
   else
-    dialog --stdout --title "$PN" --msgbox "Error: passwords to not match. Exiting." 0 0
+    if [ "${GUI}" = true ] ; then
+      $DIALOG --no-wrap --title "$PN" --error --text "Error: passwords do not match.\nExiting."
+    else
+      $DIALOG --title "$PN" --msgbox "Error: passwords do not match. Exiting." 0 0
+    fi
     exit 1
   fi
 }
 
 askpwd() {
-  dialog --stdout --title "$PN" --yesno "User $USER has no password set yet. Without a password you will not be able to log in again. Set password for user $USER?" 0 0
-  if [ "$?" -eq 0 ] ; then
+  if [ "${GUI}" = true ] ; then
+    $DIALOG --no-wrap --title="$PN" --question --cancel-label='Exit' --ok-label='Set password' --text="User $USER has no password set yet.\nWithout a password you will not be able to log in again.\nSet password for user $USER?"
+    RC=$?
+  else
+    $DIALOG --title "$PN" --no-label Exit --yes-label Continue --yesno "User $USER has no password set yet. Without a password you will not be able to log in again. Set password for user $USER?" 0 0
+    RC=$?
+  fi
+
+  if [ "$RC" = "0" ] ; then
     set_passwd
   else
     exit 1
@@ -64,8 +117,11 @@ askpwd() {
 if ! isgrmlcd ; then
   lock_desktop
 else
-  is_passwd_set || askpwd
-  lock_desktop
+  if is_passwd_set || askpwd ; then
+    lock_desktop
+  else
+    exit 1
+  fi
 fi
 
 ## END OF FILE #################################################################