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Merge pull request #2964 from bcambl/selinux_enforcing
Exit installation when SELinux in unsupported state
This commit is contained in:
DL6ER
GitHub
commit
61d233f069
3 changed files with 103 additions and 75 deletions
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@ -1959,20 +1959,42 @@ installPihole() {
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# SELinux
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checkSelinux() {
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# If the getenforce command exists,
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if is_command getenforce ; then
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# Store the current mode in a variable
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enforceMode=$(getenforce)
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printf "\\n %b SELinux mode detected: %s\\n" "${INFO}" "${enforceMode}"
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# If it's enforcing,
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if [[ "${enforceMode}" == "Enforcing" ]]; then
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# Explain Pi-hole does not support it yet
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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}" || \
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{ printf "\\n %bSELinux Enforcing detected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}"; exit 1; }
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printf " %b Continuing installation with SELinux Enforcing\\n" "${INFO}"
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printf " %b Please refer to official SELinux documentation to create a custom policy\\n" "${INFO}"
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fi
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local DEFAULT_SELINUX
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local CURRENT_SELINUX
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local SELINUX_ENFORCING=0
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# Check if a SELinux configuration file exists
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if [[ -f /etc/selinux/config ]]; then
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# If a SELinux configuration file was found, check the default SELinux mode.
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DEFAULT_SELINUX=$(awk -F= '/^SELINUX=/ {print $2}' /etc/selinux/config)
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case "${DEFAULT_SELINUX,,}" in
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enforcing)
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printf "%b %bDefault SELinux: %s%b\\n" "${CROSS}" "${COL_RED}" "${DEFAULT_SELINUX}" "${COL_NC}"
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SELINUX_ENFORCING=1
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;;
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*) # 'permissive' and 'disabled'
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printf "%b %bDefault SELinux: %s%b\\n" "${TICK}" "${COL_GREEN}" "${DEFAULT_SELINUX}" "${COL_NC}"
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;;
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esac
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# Check the current state of SELinux
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CURRENT_SELINUX=$(getenforce)
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case "${CURRENT_SELINUX,,}" in
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enforcing)
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printf "%b %bCurrent SELinux: %s%b\\n" "${CROSS}" "${COL_RED}" "${CURRENT_SELINUX}" "${COL_NC}"
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SELINUX_ENFORCING=1
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;;
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*) # 'permissive' and 'disabled'
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printf "%b %bCurrent SELinux: %s%b\\n" "${TICK}" "${COL_GREEN}" "${CURRENT_SELINUX}" "${COL_NC}"
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;;
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esac
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else
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echo -e "${INFO} ${COL_GREEN}SELinux not detected${COL_NC}";
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fi
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# Exit the installer if any SELinux checks toggled the flag
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if [[ "${SELINUX_ENFORCING}" -eq 1 ]] && [[ -z "${PIHOLE_SELINUX}" ]]; then
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printf "Pi-hole does not provide an SELinux policy as the required changes modify the security of your system.\\n"
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printf "Please refer to https://wiki.centos.org/HowTos/SELinux if SELinux is required for your deployment.\\n"
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printf "\\n%bSELinux Enforcing detected, exiting installer%b\\n" "${COL_LIGHT_RED}" "${COL_NC}";
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exit 1;
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fi
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}
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@ -254,73 +254,16 @@ def test_configureFirewall_IPTables_enabled_not_exist_no_errors(Pihole):
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assert len(re.findall(r'tcp --dport 4711:4720', firewall_calls)) == 2
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def test_selinux_enforcing_default_exit(Pihole):
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def test_selinux_not_detected(Pihole):
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'''
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confirms installer prompts to exit when SELinux is Enforcing by default
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confirms installer continues when SELinux configuration file does not exist
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'''
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# getenforce returns the running state of SELinux
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mock_command('getenforce', {'*': ('Enforcing', '0')}, Pihole)
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# Whiptail dialog returns Cancel for user prompt
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mock_command('whiptail', {'*': ('', '1')}, Pihole)
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check_selinux = Pihole.run('''
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rm -f /etc/selinux/config
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = info_box + ' SELinux mode detected: Enforcing'
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assert expected_stdout in check_selinux.stdout
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expected_stdout = 'SELinux Enforcing detected, exiting installer'
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 1
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def test_selinux_enforcing_continue(Pihole):
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'''
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confirms installer prompts to continue with custom policy warning
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'''
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# getenforce returns the running state of SELinux
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mock_command('getenforce', {'*': ('Enforcing', '0')}, Pihole)
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# Whiptail dialog returns Continue for user prompt
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mock_command('whiptail', {'*': ('', '0')}, Pihole)
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check_selinux = Pihole.run('''
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = info_box + ' SELinux mode detected: Enforcing'
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assert expected_stdout in check_selinux.stdout
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expected_stdout = info_box + (' Continuing installation with SELinux '
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'Enforcing')
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assert expected_stdout in check_selinux.stdout
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expected_stdout = info_box + (' Please refer to official SELinux '
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'documentation to create a custom policy')
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 0
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def test_selinux_permissive(Pihole):
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'''
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confirms installer continues when SELinux is Permissive
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'''
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# getenforce returns the running state of SELinux
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mock_command('getenforce', {'*': ('Permissive', '0')}, Pihole)
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check_selinux = Pihole.run('''
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = info_box + ' SELinux mode detected: Permissive'
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 0
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def test_selinux_disabled(Pihole):
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'''
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confirms installer continues when SELinux is Disabled
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'''
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mock_command('getenforce', {'*': ('Disabled', '0')}, Pihole)
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check_selinux = Pihole.run('''
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = info_box + ' SELinux mode detected: Disabled'
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expected_stdout = info_box + ' SELinux not detected'
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 0
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@ -8,6 +8,69 @@ from conftest import (
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)
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def mock_selinux_config(state, Pihole):
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'''
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Creates a mock SELinux config file with expected content
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'''
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# validate state string
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valid_states = ['enforcing', 'permissive', 'disabled']
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assert state in valid_states
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# getenforce returns the running state of SELinux
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mock_command('getenforce', {'*': (state.capitalize(), '0')}, Pihole)
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# create mock configuration with desired content
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Pihole.run('''
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mkdir /etc/selinux
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echo "SELINUX={state}" > /etc/selinux/config
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'''.format(state=state.lower()))
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@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
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def test_selinux_enforcing_exit(Pihole):
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'''
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confirms installer prompts to exit when SELinux is Enforcing by default
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'''
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mock_selinux_config("enforcing", Pihole)
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check_selinux = Pihole.run('''
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = cross_box + ' Current SELinux: Enforcing'
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assert expected_stdout in check_selinux.stdout
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expected_stdout = 'SELinux Enforcing detected, exiting installer'
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 1
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@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
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def test_selinux_permissive(Pihole):
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'''
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confirms installer continues when SELinux is Permissive
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'''
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mock_selinux_config("permissive", Pihole)
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check_selinux = Pihole.run('''
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = tick_box + ' Current SELinux: Permissive'
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 0
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@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
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def test_selinux_disabled(Pihole):
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'''
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confirms installer continues when SELinux is Disabled
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'''
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mock_selinux_config("disabled", Pihole)
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check_selinux = Pihole.run('''
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source /opt/pihole/basic-install.sh
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checkSelinux
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''')
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expected_stdout = tick_box + ' Current SELinux: Disabled'
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assert expected_stdout in check_selinux.stdout
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assert check_selinux.rc == 0
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@pytest.mark.parametrize("tag", [('fedora'), ])
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def test_epel_and_remi_not_installed_fedora(Pihole):
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'''
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