ACC SHELL
| Path : /usr/bin/ |
|
|
| Current File : //usr/bin/xdg-su |
#!/bin/sh
#---------------------------------------------
# xdg-su
#
# Utility script to run a command as an alternate user, generally
# the root user, with a graphical prompt for the root
# password if needed
#
# Refer to the usage() function below for usage.
#
# Copyright 2006, Jeremy White <jwhite@codeweavers.com>
# Copyright 2006, Kevin Krammer <kevin.krammer@gmx.at>
#
# LICENSE:
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
#---------------------------------------------
manualpage()
{
cat << _MANUALPAGE
Name
xdg-su - run a GUI program as root after prompting for the root password
Synopsis
xdg-su [-u user] -c command
xdg-su { --help | --manual | --version }
Description
xdg-su provides a graphical dialog that prompts the user for a password to run
command as user or as root if no user was specified.
xdg-su is for use inside a desktop session only.
xdg-su discards any stdout and stderr output from command.
Options
-u user
run command as user. The default is to run as root.
--help
Show command synopsis.
--manual
Show this manualpage.
--version
Show the xdg-utils version information.
Exit Codes
An exit code of 0 indicates success while a non-zero exit code indicates
failure. The following failure codes can be returned:
1
Error in command line syntax.
2
One of the files passed on the command line did not exist.
3
A required tool could not be found.
4
The action failed.
See Also
su(1)
Examples
xdg-su -u root -c "/opt/shinythings/bin/install-GUI --install fast"
Runs the /opt/shinythings/bin/install-GUI command with root permissions.
_MANUALPAGE
}
usage()
{
cat << _USAGE
xdg-su - run a GUI program as root after prompting for the root password
Synopsis
xdg-su [-u user] -c command
xdg-su { --help | --manual | --version }
_USAGE
}
#@xdg-utils-common@
#----------------------------------------------------------------------------
# Common utility functions included in all XDG wrapper scripts
#----------------------------------------------------------------------------
DEBUG()
{
[ ${XDG_UTILS_DEBUG_LEVEL-0} -lt $1 ] && return 0;
shift
echo "$@" >&2
}
#-------------------------------------------------------------
# Exit script on successfully completing the desired operation
exit_success()
{
if [ $# -gt 0 ]; then
echo "$@"
echo
fi
exit 0
}
#-----------------------------------------
# Exit script on malformed arguments, not enough arguments
# or missing required option.
# prints usage information
exit_failure_syntax()
{
if [ $# -gt 0 ]; then
echo "xdg-su: $@" >&2
echo "Try 'xdg-su --help' for more information." >&2
else
usage
echo "Use 'man xdg-su' or 'xdg-su --manual' for additional info."
fi
exit 1
}
#-------------------------------------------------------------
# Exit script on missing file specified on command line
exit_failure_file_missing()
{
if [ $# -gt 0 ]; then
echo "xdg-su: $@" >&2
fi
exit 2
}
#-------------------------------------------------------------
# Exit script on failure to locate necessary tool applications
exit_failure_operation_impossible()
{
if [ $# -gt 0 ]; then
echo "xdg-su: $@" >&2
fi
exit 3
}
#-------------------------------------------------------------
# Exit script on failure returned by a tool application
exit_failure_operation_failed()
{
if [ $# -gt 0 ]; then
echo "xdg-su: $@" >&2
fi
exit 4
}
#------------------------------------------------------------
# Exit script on insufficient permission to read a specified file
exit_failure_file_permission_read()
{
if [ $# -gt 0 ]; then
echo "xdg-su: $@" >&2
fi
exit 5
}
#------------------------------------------------------------
# Exit script on insufficient permission to read a specified file
exit_failure_file_permission_write()
{
if [ $# -gt 0 ]; then
echo "xdg-su: $@" >&2
fi
exit 6
}
check_input_file()
{
if [ ! -e "$1" ]; then
exit_failure_file_missing "file '$1' does not exist"
fi
if [ ! -r "$1" ]; then
exit_failure_file_permission_read "no permission to read file '$1'"
fi
}
check_vendor_prefix()
{
file=`basename "$1"`
case "$file" in
[a-zA-Z]*-*)
return
;;
esac
echo "xdg-su: filename '$file' does not have a proper vendor prefix" >&2
echo 'A vendor prefix consists of alpha characters ([a-zA-Z]) and is terminated' >&2
echo 'with a dash ("-"). An example filename is '"'example-$file'" >&2
echo "Use --novendor to override or 'xdg-su --manual' for additional info." >&2
exit 1
}
check_output_file()
{
# if the file exists, check if it is writeable
# if it does not exists, check if we are allowed to write on the directory
if [ -e "$1" ]; then
if [ ! -w "$1" ]; then
exit_failure_file_permission_write "no permission to write to file '$1'"
fi
else
DIR=`dirname "$1"`
if [ ! -w "$DIR" -o ! -x "$DIR" ]; then
exit_failure_file_permission_write "no permission to create file '$1'"
fi
fi
}
#----------------------------------------
# Checks for shared commands, e.g. --help
check_common_commands()
{
while [ $# -gt 0 ] ; do
parm="$1"
shift
case "$parm" in
--help)
usage
echo "Use 'man xdg-su' or 'xdg-su --manual' for additional info."
exit_success
;;
--manual)
manualpage
exit_success
;;
--version)
echo "xdg-su 1.0beta2"
exit_success
;;
esac
done
}
check_common_commands "$@"
if [ ${XDG_UTILS_DEBUG_LEVEL-0} -lt 1 ]; then
# Be silent
xdg_redirect_output=" > /dev/null 2> /dev/null"
else
# All output to stderr
xdg_redirect_output=" >&2"
fi
#--------------------------------------
# Checks for known desktop environments
# set variable DE to the desktop environments name, lowercase
detectDE()
{
if [ x"$KDE_FULL_SESSION" = x"true" ]; then DE=kde;
elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
elif xprop -root _DT_SAVE_MODE | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
elif [ x"$DESKTOP_SESSION" == x"LXDE" ]; then DE=lxde;
fi
}
#----------------------------------------------------------------------------
su_kde()
{
KDESU=`which kdesu 2>/dev/null`
if [ $? -eq 0 ] ; then
if [ -z "$user" ] ; then
$KDESU -c "$cmd"
else
$KDESU -u "$user" -c "$cmd"
fi
if [ $? -eq 0 ]; then
exit_success
else
exit_failure_operation_failed
fi
else
su_generic
fi
}
su_gnome()
{
GSU=`which gnomesu 2>/dev/null`
if [ $? -ne 0 ] ; then
GSU=`which xsu 2>/dev/null`
fi
if [ $? -eq 0 ] ; then
if [ -z "$user" ] ; then
$GSU -c "$cmd"
else
$GSU -u "$user" -c "$cmd"
fi
if [ $? -eq 0 ]; then
exit_success
else
exit_failure_operation_failed
fi
else
su_generic
fi
}
su_generic()
{
if [ -z "$user" ] ; then
xterm -geom 60x5 -T "xdg-su: $cmd" -e su -c "$cmd"
else
xterm -geom 60x5 -T "xdg-su: $cmd" -e su -u "$user" -c "$cmd"
fi
if [ $? -eq 0 ]; then
exit_success
else
exit_failure_operation_failed
fi
}
su_xfce()
{
if which gnomesu &>/dev/null ; then
su_gnome
else
su_generic
fi
}
su_lxde()
{
if which gnomesu &>/dev/null ; then
su_gnome
else
su_generic
fi
}
[ x"$1" != x"" ] || exit_failure_syntax
user=
cmd=
while [ $# -gt 0 ] ; do
parm="$1"
shift
case "$parm" in
-u)
if [ -z "$1" ] ; then
exit_failure_syntax "user argument missing for -u"
fi
user="$1"
shift
;;
-c)
if [ -z "$1" ] ; then
exit_failure_syntax "command argument missing for -c"
fi
cmd="$1"
shift
;;
-*)
exit_failure_syntax "unexpected option '$parm'"
;;
*)
exit_failure_syntax "unexpected argument '$parm'"
;;
esac
done
if [ -z "${cmd}" ] ; then
exit_failure_syntax "command missing"
fi
detectDE
if [ x"$DE" = x"" ]; then
which xterm 2>/dev/null >&2
if [ $? -eq 0 -a -n "$DISPLAY" ] ; then
DE=generic
fi
fi
case "$DE" in
kde)
su_kde
;;
gnome)
su_gnome
;;
generic)
su_generic
;;
xfce)
su_xfce
;;
lxde)
su_lxde
;;
*)
[ x"$user" = x"" ] && user=root
exit_failure_operation_impossible "no graphical method available for invoking '$cmd' as '$user'"
;;
esac
ACC SHELL 2018