1 #!/bin/sh -e

     2 

     3 ME=$0

     4 

     5 e=3

     6 s='UNKNOWN'

     7 

     8 trap 'trap - EXIT; exit "${e}"' INT QUIT TERM EXIT

     9 

    10 die() {

    11         echo "$ME: $@" >&2

    12         exit

    13 }

    14 

    15 

    16 FILE='/etc/avast/license.avastlic'

    17 # in seconds

    18 CRITICAL=$((7*24*60*60))

    19 WARNING=$((2*CRITICAL))

    20 PATTERN='^UpdateValidThru=[0-9]+'

    21 DELIMITER='='

    22 NAME='AVASTLICENSE'

    23 

    24 while getopts "f:w:c:" opt; do

    25   case $opt in

    26     c)

    27         CRITICAL="$OPTARG"

    28         ;;

    29     d)

    30         DELIMITER="$OPTARG"

    31         ;;

    32     f)

    33         FILE="$OPTARG"

    34         ;;

    35     p)

    36         PATTERN="$OPTARG"

    37         ;;

    38     w)

    39         WARNING="$OPTARG"

    40         ;;

    41   esac

    42 done

    43 shift $((OPTIND-1))

    44 

    45 now=$(date +%s)

    46 expires=$(grep -E $PATTERN $FILE | cut -d$DELIMITER -f2)

    47 

    48 [ -n "$expires" ] || die 'Expiry not found!'

    49 

    50 left=$((expires - now))

    51 if [ $left -le $CRITICAL ]; then

    52     e=2

    53     s='CRITICAL'

    54 elif [ $left -le $WARNING ]; then

    55     e=1

    56     s='WARNING'

    57 elif [ $left -gt 0 ]; then

    58     e=0

    59     s='OK'

    60 else

    61     die 'this should not happen unless $CRITICAL & $WARNING are negative; this is not supported'

    62 fi

    63 

    64 echo "$NAME $s: file '$FILE' expires at $(date -d @$expires)"