shcheck/checks/net.sh

#Copyright (C) 2016,2023 Weber Yann
#
#This program is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 3 of the License, or
#any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <http://www.gnu.org/licenses/>.

_check_ping() {
	expt=$1
	hostname=$2
	proto=$3
	count=$4
	case "$proto" in
		ipv4)
			protoping="ping -4";;
		ipv6)
			protoping="ping -6";;
		*)
			protoping="ping";;
	esac
	if [ -z "$count" ]
	then
		count=5
	fi

	if $protoping -i 0.2 -c "$count" "$hostname" >/dev/null
	then
		if [ "$expt" = "ping" ]
		then
			success "successfully send $count ping $proto to '$hostname'"
		else
			fail "$hostname replied to $count ping $proto"
		fi
	else
		if [ "$expt" = "ping" ]
		then
			fail "unable to ping '$hostname'"
		else
			success "unable to ping '$hostname'"
		fi
	fi
}

check_ping() {
	_check_ping "ping" "$1"  "$2" "$3" "$4"
}

check_noping() {
	_check_ping "noping" "$1"  "$2" "$3" "$4"
}


check_dns() {
	hostname=$1
	field=$2
	expt=$3
	result=$(dig +short "$hostname" "$field")
	if echo "$result" | grep -e "$expt" >/dev/null
	then
		success "DNS replied '$expt' for '$field $hostname'"
	else
		fail "Unexpected DNS reply '$result' expecting '$expt' for '$hostname $field'"
	fi
}