language: Bash (bash 4.0.35)
date: 652 days 18 hours ago
link:
visibility: public 
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#!/bin/ksh
######################################################################
# Script Name: pbsu
# Purpose: To simplify the PowerBroker su - functionality.
# Maintainer: Martin Pelletier
# Reviewer: ESM
# Repository: elxin001:/opt/ess/pb/scripts
######################################################################
# History
# -------
# 2009-Feb-13 - Martin Pelletier - Initial file creation
# 2009-Feb-19 - Martin Pelletier - Added -r
# 2009-Mar-06 - Corrected FUsage to say FuncUsage
# 2009-Mar-13 - Added verbose messages
#             - Changed LOGIN to LOGIN_SWITCH
######################################################################
 
######################################################################
# FUNCTION: FuncUsage
# DESCRIPTION: Display a usage message when the script is called with
# the -h option, or when a usage error occurs.
######################################################################
FuncUsage() {
 
   echo "Usage: pbsu [-vv] [-|-l] [<username>]"
   echo "   or: esm-audit -h"
   echo ''
   echo '       -  Make the shell a login shell'
   echo '       -l Same as -'
   echo '       -h Display this message'
   echo '       -v Specify verbose mode'
   echo ''
 
}
 
######################################################################
# GETTING COMMAND LINE ARGUMENTS AND ASSOCIATED OPTIONS
######################################################################
REMOTEHOST=""
while getopts :lr:hv OPTION; do
   case $OPTION in
      v) VERBOSE=$(( ${VERBOSE:-0} + 1 )) ;;
      l) LOGIN_SWITCH="-l" ;;
      h) HELP="I_NEED_SOMEBODY"  ;;
      r) REMOTEHOST="$OPTARG"  ;;
      :) echo "ERROR: -$OPTARG missing argument!"
         echo ""; FuncUsage
         exit 2 ;;
      \?) echo "ERROR: -$OPTARG is an invalid option!"
          echo ""; FuncUsage
          exit 2 ;;
   esac
done
shift $OPTIND-1
 
### Set -x if the user executes the script with -vv
[ "$VERBOSE" -gt 2 ] && set -x
 
### If the script was executed with - or -l, emulate su behavior by
### setting LOGIN_SWITCH to -l so that pbksh will be launched with the -l
### option (launching the session as a login session).  Once LOGIN_SWITCH is
### set, set shift the command line options, and set FIRST_ARG to the
### new $1, which should be the username.
FIRST_ARG="$1"
if [ "$FIRST_ARG" = '-' ]; then
   LOGIN_SWITCH="-l"
   shift
   FIRST_ARG="$1"
fi
 
### Set USERNAME based on the contents of FIRST_ARG.  If FIRST_ARG is
### blank, then set USERNAME to root (emulating su behavior).
if [ -z "$FIRST_ARG" ]; then
   USERNAME="root"
else
   USERNAME="$FIRST_ARG"
fi
 
[ "$VERBOSE" -gt 1 ] && print "   USERNAME: $USERNAME"
[ "$VERBOSE" -gt 1 ] && print "REMOTE HOST: $REMOTEHOST"
[ "$VERBOSE" -gt 1 ] && print "LOGIN VALUE: $LOGIN_SWITCH"
 
### If command was executed with -h, display help message, otherwise,
### execute pbksh to elevate the user to the desired privileges.
if [ -n "$HELP" ]; then
   FuncUsage
   exit
else
   [ -n "$REMOTEHOST" ] && /usr/local/bin/pbrun -h $REMOTEHOST -u $USERNAME /usr/local/bin/pbksh $LOGIN_SWITCH
   [ -n "$REMOTEHOST" ] || /usr/local/bin/pbrun -b -u $USERNAME /usr/local/bin/pbksh $LOGIN_SWITCH
fi