79 lines
3.2 KiB
Python
79 lines
3.2 KiB
Python
import os
|
|
|
|
import infra.basetest
|
|
|
|
|
|
class TestIptables(infra.basetest.BRTest):
|
|
# The iptables package has _LINUX_CONFIG_FIXUPS, so we cannot use
|
|
# the runtime test pre-built Kernel. We need to compile a Kernel
|
|
# to make sure it will include the required configuration.
|
|
config = \
|
|
"""
|
|
BR2_aarch64=y
|
|
BR2_TOOLCHAIN_EXTERNAL=y
|
|
BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
|
|
BR2_LINUX_KERNEL=y
|
|
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
|
|
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.1.82"
|
|
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
|
|
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
|
|
BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
|
|
BR2_PACKAGE_IPTABLES=y
|
|
BR2_TARGET_ROOTFS_CPIO=y
|
|
BR2_TARGET_ROOTFS_CPIO_GZIP=y
|
|
# BR2_TARGET_ROOTFS_TAR is not set
|
|
"""
|
|
|
|
def test_run(self):
|
|
img = os.path.join(self.builddir, "images", "rootfs.cpio.gz")
|
|
kern = os.path.join(self.builddir, "images", "Image")
|
|
self.emulator.boot(arch="aarch64",
|
|
kernel=kern,
|
|
kernel_cmdline=["console=ttyAMA0"],
|
|
options=["-M", "virt",
|
|
"-cpu", "cortex-a57",
|
|
"-m", "256M",
|
|
"-initrd", img])
|
|
self.emulator.login()
|
|
|
|
# We check the program can execute.
|
|
self.assertRunOk("iptables --version")
|
|
|
|
# We delete all rules in all chains. We also set default
|
|
# policies to ACCEPT for INPUT and OUTPUT chains. This should
|
|
# already be the case (default Kernel config). This makes sure
|
|
# this test starts from a known state and also those common
|
|
# command invocations works.
|
|
self.assertRunOk("iptables --flush")
|
|
self.assertRunOk("iptables --policy INPUT ACCEPT")
|
|
self.assertRunOk("iptables --policy OUTPUT ACCEPT")
|
|
|
|
# We add a filter rule to drop all the ICMP protocol to the
|
|
# IPv4 destination 127.0.0.2, in the INPUT chain. This should
|
|
# block all pings (icmp echo-requests).
|
|
cmd = "iptables --append INPUT"
|
|
cmd += " --protocol icmp --destination 127.0.0.2 --jump DROP"
|
|
self.assertRunOk(cmd)
|
|
|
|
# We check we can list rules.
|
|
self.assertRunOk("iptables --list")
|
|
|
|
# A ping to 127.0.0.1 is expected to work, because it's not
|
|
# matching our rule. We expect 3 replies (-c), with 0.5s
|
|
# internal (-i), and set a maximum timeout of 2s.
|
|
ping_cmd_prefix = "ping -c 3 -i 0.5 -W 2 "
|
|
self.assertRunOk(ping_cmd_prefix + "127.0.0.1")
|
|
|
|
# A ping to 127.0.0.2 is expected to fail, because our rule is
|
|
# supposed to drop it.
|
|
ping_test_cmd = ping_cmd_prefix + "127.0.0.2"
|
|
_, exit_code = self.emulator.run(ping_test_cmd)
|
|
self.assertNotEqual(exit_code, 0)
|
|
|
|
# We delete our only rule #1 in the INPUT chain.
|
|
self.assertRunOk("iptables --delete INPUT 1")
|
|
|
|
# Since we deleted the rule, the ping test command which was
|
|
# supposed to fail earlier is now supposed to succeed.
|
|
self.assertRunOk(ping_test_cmd)
|