#!/bin/bash

# lxc: linux Container library

# Authors:
# Serge Hallyn <serge.hallyn@ubuntu.com>
#
# This is a test script for the lxc-user-nic program

# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.

# This library 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
# Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

set -e

s=`mktemp -d /tmp/lxctest-XXXXXX`

DONE=0

verify_unchanged_number() {
	key=$1
	desc=$2
	n1=`grep ^$key $CONTAINER_PATH/config | wc -l`
	n2=`grep ^$key $CONTAINER2_PATH/config | wc -l`
	if [ $n1 -ne $n2 ]; then
		echo "Test $testnum failed"
		echo "unequal number of $desc"
		echo "Original has $n1, clone has $n2"
		false
	fi
}

cleanup() {
	lxc-destroy -n lxctestb || true
	lxc-destroy -n lxctestb2 || true
	rm -rf $s
	[ $DONE -eq 1 ] && echo "PASS" || echo "FAIL"
}

verify_numnics() {
	verify_unchanged_number lxc.net.0.type "network defs"
}

verify_hwaddr() {
	verify_unchanged_number lxc.net.0.hwaddr "hwaddr defs"
	grep ^lxc.net.0.hwaddr $CONTAINER_PATH/config | while read line; do
		addr=`echo $line | awk -F= { print $2 }`
		echo "looking for $addr in $CONTAINER2_PATH/config"
		if grep -q $addr $CONTAINER2_PATH/config; then
			echo "Test $testnum failed"
			echo "hwaddr $addr was not changed"
			false
		fi
	done
}

verify_hooks() {
	verify_unchanged_number lxc.hook "hooks"
	grep ^lxc.hook $CONTAINER_PATH/config | while read line; do
		nline=${line/$CONTAINER_PATH/$CONTAINER2_PATH}
		if ! grep -q "$nline" $CONTAINER2_PATH/config; then
			echo "Test $testnum failed"
			echo "Failed to find $nline in:"
			cat $CONTAINER2_PATH/config
		fi
	done
}

trap cleanup EXIT

# Simple nic
cat > $s/1.conf << EOF
lxc.net.0.type = veth
lxc.net.0.link = lxcbr0
EOF

# Simple nic with hwaddr; verify hwaddr changed
cat > $s/2.conf << EOF
lxc.net.0.type = veth
lxc.net.0.link = lxcbr0
EOF

# No nics, but nic from include
cat > $s/1.include << EOF
lxc.net.0.type = veth
lxc.net.0.link = lxcbr0
lxc.hook.start = /bin/bash
EOF
cat > $s/3.conf << EOF
lxc.include = $s/1.include
EOF

# No nics, one clone hook in /bin
cat > $s/4.conf << EOF
lxc.hook.start = /bin/bash
EOF

# Figure out container dirname
# We need this in 5.conf
lxc-destroy -n lxctestb || true
lxc-create -t busybox -n lxctestb -B dir
CONTAINER_PATH=$(dirname $(lxc-info -n lxctestb -c lxc.rootfs.path -H) | sed 's/dir://')
lxc-destroy -n lxctestb

# No nics, one clone hook in $container
cat > $s/5.conf << EOF
lxc.hook.start = $CONTAINER_PATH/x1
EOF

CONTAINER2_PATH="${CONTAINER_PATH}2"

testnum=1
for f in $s/*.conf; do
	echo "Test $testnum starting ($f)"
	lxc-create -t busybox -f $f -n lxctestb
	touch $CONTAINER_PATH/x1
	lxc-copy -s -n lxctestb -N lxctestb2
	# verify that # nics did not change
	verify_numnics
	# verify hwaddr, if any changed
	verify_hwaddr
	# verify hooks are correct
	verify_hooks
	lxc-destroy -n lxctestb2 || true
	lxc-destroy -n lxctestb || true
	testnum=$((testnum+1))
done

DONE=1