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Merge pull request #2964 from bcambl/selinux_enforcing

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Exit installation when SELinux in unsupported state
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DL6ER 2019-11-12 21:48:15 +01:00 committed by GitHub
commit 61d233f069
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 103 additions and 75 deletions
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48
automated install/basic-install.sh
View file

@ -1959,20 +1959,42 @@ installPihole() {
# SELinux
checkSelinux() {
# If the getenforce command exists,
if is_command getenforce ; then
# Store the current mode in a variable
enforceMode=$(getenforce)
printf "\\n %b SELinux mode detected: %s\\n" "${INFO}" "${enforceMode}"
# If it's enforcing,
if [[ "${enforceMode}" == "Enforcing" ]]; then
# Explain Pi-hole does not support it yet
whiptail --defaultno --title "SELinux Enforcing Detected" --yesno "SELinux is being ENFORCED on your system! \\n\\nPi-hole currently does not support SELinux, but you may still continue with the installation.\\n\\nNote: Web Admin will not be fully functional unless you set your policies correctly\\n\\nContinue installing Pi-hole?" "${r}" "${c}" || \
{ printf "\\n %bSELinux Enforcing detected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
printf " %b Continuing installation with SELinux Enforcing\\n" "${INFO}"
printf " %b Please refer to official SELinux documentation to create a custom policy\\n" "${INFO}"
local DEFAULT_SELINUX
local CURRENT_SELINUX
local SELINUX_ENFORCING=0
# Check if a SELinux configuration file exists
if [[ -f /etc/selinux/config ]]; then
# If a SELinux configuration file was found, check the default SELinux mode.
DEFAULT_SELINUX=$(awk -F= '/^SELINUX=/ {print $2}' /etc/selinux/config)
case "${DEFAULT_SELINUX,,}" in
enforcing)
printf "%b %bDefault SELinux: %s%b\\n" "${CROSS}" "${COL_RED}" "${DEFAULT_SELINUX}" "${COL_NC}"
SELINUX_ENFORCING=1
;;
*) # 'permissive' and 'disabled'
printf "%b %bDefault SELinux: %s%b\\n" "${TICK}" "${COL_GREEN}" "${DEFAULT_SELINUX}" "${COL_NC}"
;;
esac
# Check the current state of SELinux
CURRENT_SELINUX=$(getenforce)
case "${CURRENT_SELINUX,,}" in
enforcing)
printf "%b %bCurrent SELinux: %s%b\\n" "${CROSS}" "${COL_RED}" "${CURRENT_SELINUX}" "${COL_NC}"
SELINUX_ENFORCING=1
;;
*) # 'permissive' and 'disabled'
printf "%b %bCurrent SELinux: %s%b\\n" "${TICK}" "${COL_GREEN}" "${CURRENT_SELINUX}" "${COL_NC}"
;;
esac
else
echo -e "${INFO} ${COL_GREEN}SELinux not detected${COL_NC}";
fi
# Exit the installer if any SELinux checks toggled the flag
if [[ "${SELINUX_ENFORCING}" -eq 1 ]] && [[ -z "${PIHOLE_SELINUX}" ]]; then
printf "Pi-hole does not provide an SELinux policy as the required changes modify the security of your system.\\n"
printf "Please refer to https://wiki.centos.org/HowTos/SELinux if SELinux is required for your deployment.\\n"
printf "\\n%bSELinux Enforcing detected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}";
exit 1;
fi
}

65
test/test_automated_install.py
View file

@ -254,73 +254,16 @@ def test_configureFirewall_IPTables_enabled_not_exist_no_errors(Pihole):
assert len(re.findall(r'tcp --dport 4711:4720', firewall_calls)) == 2
def test_selinux_enforcing_default_exit(Pihole):
def test_selinux_not_detected(Pihole):
'''
confirms installer prompts to exit when SELinux is Enforcing by default
confirms installer continues when SELinux configuration file does not exist
'''
# getenforce returns the running state of SELinux
mock_command('getenforce', {'*': ('Enforcing', '0')}, Pihole)
# Whiptail dialog returns Cancel for user prompt
mock_command('whiptail', {'*': ('', '1')}, Pihole)
check_selinux = Pihole.run('''
rm -f /etc/selinux/config
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = info_box + ' SELinux mode detected: Enforcing'
assert expected_stdout in check_selinux.stdout
expected_stdout = 'SELinux Enforcing detected, exiting installer'
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 1
def test_selinux_enforcing_continue(Pihole):
'''
confirms installer prompts to continue with custom policy warning
'''
# getenforce returns the running state of SELinux
mock_command('getenforce', {'*': ('Enforcing', '0')}, Pihole)
# Whiptail dialog returns Continue for user prompt
mock_command('whiptail', {'*': ('', '0')}, Pihole)
check_selinux = Pihole.run('''
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = info_box + ' SELinux mode detected: Enforcing'
assert expected_stdout in check_selinux.stdout
expected_stdout = info_box + (' Continuing installation with SELinux '
'Enforcing')
assert expected_stdout in check_selinux.stdout
expected_stdout = info_box + (' Please refer to official SELinux '
'documentation to create a custom policy')
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 0
def test_selinux_permissive(Pihole):
'''
confirms installer continues when SELinux is Permissive
'''
# getenforce returns the running state of SELinux
mock_command('getenforce', {'*': ('Permissive', '0')}, Pihole)
check_selinux = Pihole.run('''
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = info_box + ' SELinux mode detected: Permissive'
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 0
def test_selinux_disabled(Pihole):
'''
confirms installer continues when SELinux is Disabled
'''
mock_command('getenforce', {'*': ('Disabled', '0')}, Pihole)
check_selinux = Pihole.run('''
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = info_box + ' SELinux mode detected: Disabled'
expected_stdout = info_box + ' SELinux not detected'
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 0

63
test/test_centos_fedora_support.py
View file

@ -8,6 +8,69 @@ from conftest import (
)
def mock_selinux_config(state, Pihole):
'''
Creates a mock SELinux config file with expected content
'''
# validate state string
valid_states = ['enforcing', 'permissive', 'disabled']
assert state in valid_states
# getenforce returns the running state of SELinux
mock_command('getenforce', {'*': (state.capitalize(), '0')}, Pihole)
# create mock configuration with desired content
Pihole.run('''
mkdir /etc/selinux
echo "SELINUX={state}" > /etc/selinux/config
'''.format(state=state.lower()))
@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
def test_selinux_enforcing_exit(Pihole):
'''
confirms installer prompts to exit when SELinux is Enforcing by default
'''
mock_selinux_config("enforcing", Pihole)
check_selinux = Pihole.run('''
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = cross_box + ' Current SELinux: Enforcing'
assert expected_stdout in check_selinux.stdout
expected_stdout = 'SELinux Enforcing detected, exiting installer'
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 1
@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
def test_selinux_permissive(Pihole):
'''
confirms installer continues when SELinux is Permissive
'''
mock_selinux_config("permissive", Pihole)
check_selinux = Pihole.run('''
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = tick_box + ' Current SELinux: Permissive'
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 0
@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
def test_selinux_disabled(Pihole):
'''
confirms installer continues when SELinux is Disabled
'''
mock_selinux_config("disabled", Pihole)
check_selinux = Pihole.run('''
source /opt/pihole/basic-install.sh
checkSelinux
''')
expected_stdout = tick_box + ' Current SELinux: Disabled'
assert expected_stdout in check_selinux.stdout
assert check_selinux.rc == 0
@pytest.mark.parametrize("tag", [('fedora'), ])
def test_epel_and_remi_not_installed_fedora(Pihole):
'''