#!/bin/sh
set -eu

# Some simple tests of the initramfs network configuration.

# The basic idea is to make an ext2 root image that only ships a /sbin/init to
# just gather some data and shutdown again and boot it in qemu system
# emulation (not KVM, so it can be run in the autopkgtest architecture without
# hoping nested kvm works).  Currently it only sets up qemu user networking
# which limits our ability to be clever. In the long run we should set up a
# tun and a bridge and specify the mac address of the NICs in the emulated
# system and run dnsmasq on it so we test ipv6 and can control which ips which
# nics get and so on -- but this is still better than nothing.

# TODO: Add a test case for classless static routes. This needs support in
# Qemu first. Following patch should be refreshed:
# https://lore.kernel.org/all/20180314190814.22631-1-benjamin.drung@profitbricks.com/

SUPPORTED_FLAVOURS='amd64 arm64 armmp powerpc64 s390x generic'
ROOTDISK_QEMU_IF=virtio
ROOTDISK_LINUX_NAME=vda
. debian/tests/test-common

cat >>"${CONFDIR}/initramfs.conf" <<EOF
MODULES=list
BUSYBOX=n
FSTYPE=ext2
EOF
cat >"${CONFDIR}/modules" <<EOF
ext2
virtio_pci
virtio_blk
virtio_net
EOF
install -m 755 debian/tests/hooks/drop-hostname "${CONFDIR}/hooks/drop-hostname"
install -m 755 debian/tests/hooks/persistent-net "${CONFDIR}/hooks/persistent-net"
build_initramfs

prepare_network_dumping_rootfs
build_rootfs_ext2

EXPECTED_DHCP_LAN0="
DEVICE='lan0'
PROTO='dhcp'
IPV4ADDR='10.0.3.15'
IPV4BROADCAST='10.0.3.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='10.0.3.2'
IPV4DNS0='10.0.3.3'
HOSTNAME='pizza'
DNSDOMAIN='example.com'
ROOTSERVER='10.0.3.2'
filename='/path/to/bootfile2'
DOMAINSEARCH='test.'
"
EXPECTED_DHCP_LAN1="
DEVICE='lan1'
PROTO='dhcp'
IPV4ADDR='10.0.2.15'
IPV4BROADCAST='10.0.2.255'
IPV4NETMASK='255.255.255.0'
IPV4GATEWAY='10.0.2.2'
IPV4DNS0='10.0.2.3'
HOSTNAME='goulash'
DNSDOMAIN='test'
ROOTSERVER='10.0.2.2'
filename='/path/to/bootfile'
DOMAINSEARCH='example. example.net.'
"

run_qemu "ip=dhcp"
check_output "Begin: Waiting up to 180 secs for any network device to become available"
./debian/tests/check-log "${OUTPUT}" has_no_running_processes \
	has_hostname "goulash|pizza" \
	has_interface_mtu "lan[01]" 1500 \
	has_ipv4_addr "10\.0\.[23]\.15/24" "lan[01]" \
	has_ipv4_default_route "10\.0\.[23]\.2" "lan[01]" \
	has_net_conf 1 "/run/net-lan0.conf=${EXPECTED_DHCP_LAN0}" "/run/net-lan1.conf=${EXPECTED_DHCP_LAN1}"

# Test _set_netdev_from_ip_param
run_qemu "ip=:::::lan1:dhcp"
check_output "Begin: Waiting up to 180 secs for lan1 to become available"
./debian/tests/check-log "${OUTPUT}" has_no_running_processes \
	has_hostname "goulash" \
	has_interface_mtu "lan1" 1500 \
	has_ipv4_addr "10\.0\.2\.15/24" "lan1" \
	has_ipv4_default_route "10\.0\.2\.2" "lan1" \
	has_net_conf 1 "/run/net-lan1.conf=${EXPECTED_DHCP_LAN1}"

# Test setting the IP address manually
run_qemu "ip=10.0.2.100::10.0.2.2:255.0.0.0:lasagne:lan1:"
check_output "Begin: Waiting up to 180 secs for lan1 to become available"
./debian/tests/check-log "${OUTPUT}" has_no_running_processes \
	has_hostname "lasagne" \
	has_interface_mtu "lan1" 1500 \
	has_ipv4_addr "10\.0\.2\.100/8" "lan1" \
	has_ipv4_default_route "10\.0\.2\.2" "lan1" \
	has_net_conf 1 "/run/net-lan1.conf=DEVICE='lan1'
PROTO='none'
IPV4ADDR='10.0.2.100'
IPV4BROADCAST='10.255.255.255'
IPV4NETMASK='255.0.0.0'
IPV4GATEWAY='10.0.2.2'
IPV4DNS0='0.0.0.0'
HOSTNAME='lasagne'
DNSDOMAIN=''
ROOTSERVER='0.0.0.0'
filename=''
DOMAINSEARCH=''"

# Test DHCP configuration with BOOTIF specified
run_qemu "BOOTIF=01-52-54-00-12-34-56 ip=dhcp"
check_output "Begin: Waiting up to 180 secs for device with address 52:54:00:12:34:56 to become available"
./debian/tests/check-log "${OUTPUT}" has_no_running_processes \
	has_hostname "goulash" \
	has_interface_mtu "lan1" 1500 \
	has_ipv4_addr "10\.0\.2\.15/24" "lan1" \
	has_ipv4_default_route "10\.0\.2\.2" "lan1" \
	has_net_conf 1 "/run/net-lan1.conf=${EXPECTED_DHCP_LAN1}"

run_qemu "ip=on"
check_output "Begin: Waiting up to 180 secs for any network device to become available"
./debian/tests/check-log "${OUTPUT}" has_no_running_processes \
	has_hostname "goulash|pizza" \
	has_interface_mtu "lan[01]" 1500 \
	has_ipv4_addr "10\.0\.[23]\.15/24" "lan[01]" \
	has_ipv4_default_route "10\.0\.[23]\.2" "lan[01]" \
	has_net_conf 1 "/run/net-lan0.conf=${EXPECTED_DHCP_LAN0}" "/run/net-lan1.conf=${EXPECTED_DHCP_LAN1}"