#!/bin/ksh
# $Id: up,v 1.4 2008/10/26 18:53:16 ksb Exp $
# Report the aprox time of boot, depends on datecalc			(ksb)
#

#****p* netlint/up
# NAME
#   up
# DESCRIPTION
#   Netlint reports the approximate uptime of the client node.
#***

#****a* up/UP_BOOT
# NAME
#   UP_BOOT
# FORMAT
#   UP_BOOT: date
#   UP_BOOT: datecalc -s "date" "offset"
# DESCRIPTION
#   If the node has datecalc(1) installed we compute the boottime of the node.
#   When it doesn't we return the shell command to compute it on the reporter
#   host (which might not run datecalc, it might do it some other way).
#***

#****a* up/UP_LIMIT
# NAME
#   UP_LIMIT
# FORMAT
#   UP_LIMIT: days
# DESCRIPTION
#   If the host's OS has a maximum uptime limit it is reported here. This is
#   not site policy, rather the cold hard fact.
# IMPACT
#   If a host crosses the uptime limit things might go south fast.
#   For example Solaris 2.6 hosts, without a major patch, fail calls to wait(3)
#   after 250 days.
#***

PROGNAME=`basename $0 .ksh`
: ${CARP:=echo}
PATH=$PATH:/usr/local/bin
export PATH

OFF=`uptime |tr '	' ' '| sed \
	-e '/.*[up]* \([0-9][0-9]*\) day[(s ,].*/{
		s//\1d/
		n
	}' \
	-e '/.*[up]* \([0-9]*[0-9]\):\([0-9]*[0-9]\)[, ].*/{
		s//\1h\2m/
		n
	}' \
	-e '/.*[up]* \([0-9]*\) hr[s, ].*/{
		s//\1h/
		n
	}' \
	-e '/.*[up]* \([0-9]*\) min[utes, ].*/{
		s//\1m/
		n
	}' \
	-e '/.*[up]* \([0-9]*\) sec[conds, ].*/{
		s//\1s/
		n
	}' \
	-e 's/.*/1d/'`

if [ _-V = _$1 ] ; then
	echo "$PROGNAME: "'$Id: up,v 1.4 2008/10/26 18:53:16 ksb Exp $'
	echo "$PROGNAME: current offset \"$OFF\""
	exit 0
fi

# When we can't find (run) datecalc here just send the expression, the
# collection/report can run it for us.
RES=`TZ=GMT datecalc -s now "$OFF" 2>/dev/null`
if [ -n "$RES" ] ; then
	$CARP UP_BOOT: $RES
else
	$CARP UP_BOOT: datecalc -s \"`TZ=GMT date`\" \"$OFF\"
fi

# If there is a hard limit on uptime tell the reporter -- ksb
case `uname -s` in
SunOS)
	case `uname -r` in
	5.6)	# Sun 2.6 wait3 bug at 250 days
		$CARP UP_LIMIT: 250
		;;
	esac
	;;
esac

exit 0