From dcc7ed0a709b3c19916a2966e5f20de066a79b32 Mon Sep 17 00:00:00 2001 From: Antonio Ospite Date: Tue, 5 Mar 2013 12:25:01 +0100 Subject: [PATCH 1/1] Initial import --- xudo.sh | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100755 xudo.sh diff --git a/xudo.sh b/xudo.sh new file mode 100755 index 0000000..5a2735a --- /dev/null +++ b/xudo.sh @@ -0,0 +1,80 @@ +#!/bin/sh +# +# Execute a command as another user, with access to the X display +# +# Copyright (C) 2013 Antonio Ospite +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + + +# This is the equivalent of sux[1] but simpler and using sudo, +# since I don't have su installed on some of my systems. +# +# [1] http://fgouget.free.fr/sux/ + +set -e + +usage() { + echo "usage: $(basename $0) [OPTION]... "; + echo "Execute a command as another user, with access to the X display" + echo + echo "List of OPTIONs:" + echo + echo " -u user Execute the program as the specified user (default is root)" + echo " -d display Set the X display" + echo " -h|--help Show this help text" + echo + sudo -h | grep -v "^[ ]\+-u user" +} + +USERNAME=root + +while true; +do + case "$1" in + -u) + [ "x$2" != "x" ] || { usage 1>&2; exit 1; } + USERNAME="$2" + shift 2 + ;; + + -d) + [ "x$2" != "x" ] || { usage 1>&2; exit 1; } + DISPLAY="$2" + shift 2 + ;; + + -h | --help) + usage + exit 0 + ;; + + *) + break + ;; + esac +done + +id $USERNAME > /dev/null || { echo "Invalid user." 1>&2; exit 1; } + +[ -n "$DISPLAY" ] || { echo "Cannot get the DISPLAY env variable." 1>&2; exit 1; } + +[ "x$@" != "x" ] || { usage 1>&2; exit 1; } + +# Authorize the user +xauth extract - $DISPLAY | sudo -u "$USERNAME" xauth merge - + +# Execute the command. +# NOTE: -i or -s have to be passed in order to open a shell +sudo DISPLAY="$DISPLAY" -u "$USERNAME" "$@" -- 2.1.4