[ SEA-GHOST MINI SHELL]

#!/bin/bash

USER=$1
PASS=$2
FILE='/tmp/krb_tmp'


# Usage: SCRIPT_FILENAME [LDAP_USER] [LDAP_PASS] [OPTION]"
# OPTION can be -d or can`t be used for more detailed output

function general_use() {
  err=`echo $PASS | kinit -c $FILE $USER 2>&1`

  if [ $? -eq 0 ]; then
    echo OK
  else
    echo "CRITICAL Getting Kerberos ticket: `echo $err | head -n 1`"
  fi

  kdestroy -c $FILE >/dev/null 2>/dev/null
}

function for_zabbix() {
  err=`echo $PASS | kinit -c $FILE $USER 2>&1`

  if [ $? -eq 0 ]; then
    echo 0
  else
    echo 1
  fi

  kdestroy -c $FILE >/dev/null 2>/dev/null
}

if [[ $# -eq 3 ]];then
  case "$3" in
    -d|--display)
    general_use
    ;;
    *)
    # Do whatever you want with extra options
    echo "Wrong key, please use -d as a third argument for an extended output"
    ;;
  esac
  shift
else
  for_zabbix
fi