203 lines
7.1 KiB
Bash
203 lines
7.1 KiB
Bash
load "${REPOSITORY_ROOT}/test/helper/setup"
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load "${REPOSITORY_ROOT}/test/helper/common"
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BATS_TEST_NAME_PREFIX='[Fail2Ban] '
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CONTAINER1_NAME='dms-test_fail2ban'
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CONTAINER2_NAME='dms-test_fail2ban_fail-auth-mailer'
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function setup_file() {
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export CONTAINER_NAME
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CONTAINER_NAME=${CONTAINER1_NAME}
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local CUSTOM_SETUP_ARGUMENTS=(
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--env ENABLE_FAIL2BAN=1
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--env POSTSCREEN_ACTION=ignore
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--cap-add=NET_ADMIN
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# NOTE: May no longer be needed with newer F2B:
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--ulimit "nofile=$(ulimit -Sn):$(ulimit -Hn)"
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)
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init_with_defaults
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common_container_setup 'CUSTOM_SETUP_ARGUMENTS'
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wait_for_smtp_port_in_container "${CONTAINER_NAME}"
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# Create a container which will send wrong authentications and should get banned
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CONTAINER_NAME=${CONTAINER2_NAME}
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init_with_defaults
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common_container_setup 'CUSTOM_SETUP_ARGUMENTS'
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# Set default implicit container fallback for helpers:
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CONTAINER_NAME=${CONTAINER1_NAME}
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}
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function teardown_file() {
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docker rm -f "${CONTAINER1_NAME}" "${CONTAINER2_NAME}"
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}
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@test "Fail2Ban is running" {
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run check_if_process_is_running 'fail2ban-server'
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assert_success
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}
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@test "localhost is not banned because ignored" {
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_run_in_container fail2ban-client status postfix-sasl
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assert_success
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refute_output --regexp '.*IP list:.*127\.0\.0\.1.*'
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_run_in_container grep 'ignoreip = 127.0.0.1/8' /etc/fail2ban/jail.conf
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assert_success
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}
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@test "fail2ban-fail2ban.cf overrides" {
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_run_in_container fail2ban-client get loglevel
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assert_success
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assert_output --partial 'DEBUG'
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}
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@test "fail2ban-jail.cf overrides" {
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for FILTER in 'dovecot' 'postfix' 'postfix-sasl'
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do
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_run_in_container fail2ban-client get "${FILTER}" bantime
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assert_output 1234
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_run_in_container fail2ban-client get "${FILTER}" findtime
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assert_output 321
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_run_in_container fail2ban-client get "${FILTER}" maxretry
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assert_output 2
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_run_in_container fail2ban-client -d
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assert_output --partial "['set', 'dovecot', 'addaction', 'nftables-multiport']"
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assert_output --partial "['set', 'postfix', 'addaction', 'nftables-multiport']"
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assert_output --partial "['set', 'postfix-sasl', 'addaction', 'nftables-multiport']"
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done
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}
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# NOTE: This test case is fragile if other test cases were to be run concurrently.
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# - After multiple login fails and a slight delay, f2b will ban that IP.
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# - You could hard-code `sleep 5` on both cases to avoid the alternative assertions,
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# but the polling + piping into grep approach here reliably minimizes the delay.
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@test "ban ip on multiple failed login" {
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CONTAINER1_IP=$(get_container_ip ${CONTAINER1_NAME})
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# Trigger a ban by failing to login twice:
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_run_in_container_explicit "${CONTAINER2_NAME}" bash -c "nc ${CONTAINER1_IP} 25 < /tmp/docker-mailserver-test/auth/smtp-auth-login-wrong.txt"
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_run_in_container_explicit "${CONTAINER2_NAME}" bash -c "nc ${CONTAINER1_IP} 25 < /tmp/docker-mailserver-test/auth/smtp-auth-login-wrong.txt"
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# Checking that CONTAINER2_IP is banned in "${CONTAINER1_NAME}"
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CONTAINER2_IP=$(get_container_ip ${CONTAINER2_NAME})
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run repeat_in_container_until_success_or_timeout 10 "${CONTAINER_NAME}" bash -c "fail2ban-client status postfix-sasl | grep -F '${CONTAINER2_IP}'"
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assert_success
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assert_output --partial 'Banned IP list:'
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# Checking that CONTAINER2_IP is banned by nftables
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_run_in_container bash -c 'nft list set inet f2b-table addr-set-postfix-sasl'
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assert_success
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assert_output --partial "elements = { ${CONTAINER2_IP} }"
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}
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# NOTE: Depends on previous test case, if no IP was banned at this point, it passes regardless..
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@test "unban ip works" {
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CONTAINER2_IP=$(get_container_ip ${CONTAINER2_NAME})
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_run_in_container fail2ban-client set postfix-sasl unbanip "${CONTAINER2_IP}"
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assert_success
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# Checking that CONTAINER2_IP is unbanned in "${CONTAINER1_NAME}"
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_run_in_container fail2ban-client status postfix-sasl
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assert_success
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refute_output --partial "${CONTAINER2_IP}"
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# Checking that CONTAINER2_IP is unbanned by nftables
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_run_in_container bash -c 'nft list set inet f2b-table addr-set-postfix-sasl'
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refute_output --partial "${CONTAINER2_IP}"
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}
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@test "bans work properly (single IP)" {
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_run_in_container fail2ban ban 192.0.66.7
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assert_success
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assert_output 'Banned custom IP: 1'
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_run_in_container fail2ban
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assert_success
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assert_output --regexp 'Banned in custom:.*192\.0\.66\.7'
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_run_in_container nft list set inet f2b-table addr-set-custom
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assert_success
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assert_output --partial 'elements = { 192.0.66.7 }'
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_run_in_container fail2ban unban 192.0.66.7
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assert_success
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assert_output --partial 'Unbanned IP from custom: 1'
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_run_in_container nft list set inet f2b-table addr-set-custom
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refute_output --partial '192.0.66.7'
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}
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@test "bans work properly (subnet)" {
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_run_in_container fail2ban ban 192.0.66.0/24
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assert_success
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assert_output 'Banned custom IP: 1'
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_run_in_container fail2ban
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assert_success
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assert_output --regexp 'Banned in custom:.*192\.0\.66\.0/24'
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_run_in_container nft list set inet f2b-table addr-set-custom
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assert_success
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assert_output --partial 'elements = { 192.0.66.0/24 }'
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_run_in_container fail2ban unban 192.0.66.0/24
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assert_success
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assert_output --partial 'Unbanned IP from custom: 1'
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_run_in_container nft list set inet f2b-table addr-set-custom
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refute_output --partial '192.0.66.0/24'
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}
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@test "FAIL2BAN_BLOCKTYPE is really set to drop" {
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# ban IPs here manually so we can be sure something is inside the jails
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for JAIL in dovecot postfix-sasl custom; do
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_run_in_container fail2ban-client set "${JAIL}" banip 192.33.44.55
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assert_success
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done
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_run_in_container nft list table inet f2b-table
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assert_success
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assert_output --partial 'tcp dport { 110, 143, 465, 587, 993, 995, 4190 } ip saddr @addr-set-dovecot drop'
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assert_output --partial 'tcp dport { 25, 110, 143, 465, 587, 993, 995 } ip saddr @addr-set-postfix-sasl drop'
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assert_output --partial 'tcp dport { 25, 110, 143, 465, 587, 993, 995, 4190 } ip saddr @addr-set-custom drop'
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# unban the IPs previously banned to get a clean state again
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for JAIL in dovecot postfix-sasl custom; do
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_run_in_container fail2ban-client set "${JAIL}" unbanip 192.33.44.55
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assert_success
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done
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}
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@test "setup.sh fail2ban" {
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_run_in_container fail2ban-client set dovecot banip 192.0.66.4
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_run_in_container fail2ban-client set dovecot banip 192.0.66.5
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# Originally: run ./setup.sh -c "${CONTAINER1_NAME}" fail2ban
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_run_in_container setup fail2ban
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assert_output --regexp '^Banned in dovecot:.*192\.0\.66\.4'
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assert_output --regexp '^Banned in dovecot:.*192\.0\.66\.5'
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_run_in_container setup fail2ban unban 192.0.66.4
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assert_output --partial "Unbanned IP from dovecot: 1"
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_run_in_container setup fail2ban
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assert_output --regexp '^Banned in dovecot:.*192\.0\.66\.5'
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_run_in_container setup fail2ban unban 192.0.66.5
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assert_output --partial 'Unbanned IP from dovecot: 1'
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_run_in_container setup fail2ban unban
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assert_output --partial 'You need to specify an IP address: Run'
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}
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@test "restart of Fail2Ban" {
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_run_in_container pkill fail2ban
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assert_success
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run_until_success_or_timeout 10 check_if_process_is_running 'fail2ban-server'
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}
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