diff --git a/openbsd/CHANGELOG b/openbsd/CHANGELOG new file mode 100644 index 0000000..18b79fb --- /dev/null +++ b/openbsd/CHANGELOG @@ -0,0 +1,180 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [Unreleased] + +### Changed + +- check_evobackup_exclude_mount: skip if --one-file-system is used, and exclude scripts without Rsync command +- check_backupuptodate: use find with --max-depth=1 to limit the number of evaluated files +- check_sshpermitrootno: do not display sshd errors + +## [22.08] - 2022-08-04 + +### Fixed + +- Fixed check_sshpermitrootno to check real configuration + +## [22.06] - 2022-06-16 + +### Changed + +- Fixed various shellcheck violations +- Added a function to cleanup files at once instead of using multiple trap rm + +## [22.04] - 2022-04-13 + +### Added + +- Added check_root_user: make sure that root user does not have a password + +## [22.03] - 2022-03-10 + +### Added + +- check_evomaintenanceconf: check existence and rights of evomaintenance conf file +- Added check_nrpeopensmtpd to ensure that opensmtpd is used for mailq nrpe check +- Added check_sshallowusers to ensure that AllowUsers or AllowGroups directive is present in sshd_config +- Added check_evobackup_exclude_mount to ensure that NFS mounts are excluded from backup +- Added check_etcgit to ensure that /etc is a git repository +- Added check_evolinuxsudogroup to ensure that evolinux-sudo is properly configured in sudo if group exist +- Added check_bind9munin to ensure that a plugin for bind is configured when munin is installed +- Added check_evolix_user to ensure that evolix user does not exist +- Added check_versions and its functions (download_versions, get_command, get_version, check_version, add_to_path) to ensure that custom scripts are up to date + +### Changed + +- Overall improvement of evocheck: reordering, splitting version and help options, adding comments, developping some functions so they are more comprehensible +- Improved check_umasksudoers to have a more complete grep +- Updated check_history to reflect the new HISTSIZE value +- Renamed check_tmp1777 and check_root0700 respectively to check_tmp_1777 and check_root_0700 +- Improved check_tmp_1777, check_root_0700, check_usrsharescripts in the way the folders rights are checked + +### Fixed + +- Fixed check_uptime: it didn't work at all, and tried to get uptime in the wrong way +- Fixed check_evomaintenanceusers: sudo is not used for the evomaintenance trap, doas is ; and users were not found the better way + +### Removed + +- Removed empty check_pfcustom + +## [21.10] - 2021-10-07 + +### Fixed + +- Fixed check_tmoutprofile: syntax error on if/else/fi test + +## [21.09] - 2021-09-17 + +### Changed + +- Changed version numbering to use year.month and be capable to know the age of the script + +### Fixed + +- Fixed check_tmoutprofile: Add "if" to check if file exists + +## [6.9.1] - 2021-07-23 + +### Changed + +- Renamed check_advskew, check_preempt, check_advbase and their alert to add "carp" in them + +## [6.9.0] - 2021-07-16 + +### Added + +- Add check_advskew: convention for CARP interfaces. CARP in master state must have advskew parameter between 1 and 50, CARP in backup state must have advskew parameter between 100 and 150, preventing a configuration error with the same value for master and backup + +## [6.8.0] - 2020-10-23 + +### Fixed + +- Fix check_noatime: do not take into account commented entry in fstab + +## [6.7.7] - 2020-10-22 + +### Added + +- Add check_openvpncronlog: a cron is needed to rotate logs, because a restart of OpenVPN would be needed with the use of newsyslog to rotate logs + +### Fixed + +- Fix check_uptodate: properly check that syspatch exists +- Fix check_raidok: the same device could be displayed multiple times + +## [6.7.6] - 2020-10-15 + +### Added + +- Add check_noatime - Check that all ffs partitions are mounted with the noatime option + +### Fixed + +- Fix check_softdep - We now check the number of ffs partitions and we compare it to the number of softdep options currently there + +## [6.7.5] - 2020-10-09 + +### Fixed + +- Fix check_cronpath - Do not check PATH=XXX but only XXX because XXX can also be in quotes (PATH="XXX" would not be matched) + +## [6.7.4] - 2020-08-04 + +### Added + +- Add check_backupuptodate - Check that /home/backup is not older than 2 days + +## [6.7.3] - 2020-07-23 + +### Added + +- Add check_ntp - Check the ntpd configuration + +### Fixed + +- Fix check_defaultroute - We need to check if the /etc/mygate file exists before comparing it + +### Removed + +- Removed check_postgresql - Deprecated since we now use an API + +## [6.7.2] - 2020-07-22 + +### Added + +- Add check_defaultroute function - Make sure the default route in /etc/mygate file is the same that the one currently used + +## [6.7.1] - 2020-07-15 + +### Fixed + +- Fix check_customsyslog - We have to check whether EvoBSD is present in newsyslog.conf file +- Fix check_sudomaint function - ADMIN group does not exist anymore, we now check that the wheel group has NOPASSWD to run the evomaintenance command alias +- Fix check_advbase - We want the evocheck advbase function output to be uniq + +## [6.6.2] - 2020-04-27 + +### Added + +- Add check_sync function - If a server is a Carp member we check whether the sync.sh script is present or not +- Add check_pfenabled function - We make sure PF is enabled +- Add check_uptodate function - Use syspatch(8) to check if security updates are available + +### Changed + +- Remove check_oldhomedir - This information is irrelevant since we always keep home directories of former sysadmins +- Now use a version-naming scheme based on OpenBSD's one + +## [6.6.1] - 2020-04-21 + +### Changed + +- Rewrite if statements to functions +- Add a main function +- New help message diff --git a/openbsd/CONTRIBUTING.md b/openbsd/CONTRIBUTING.md new file mode 100644 index 0000000..5be0a31 --- /dev/null +++ b/openbsd/CONTRIBUTING.md @@ -0,0 +1,4 @@ +Current project leader: Jérémy D and Tristan + +- Use English +- Always do a Merge Request diff --git a/openbsd/LICENSE b/openbsd/LICENSE new file mode 100644 index 0000000..53d1f3d --- /dev/null +++ b/openbsd/LICENSE @@ -0,0 +1,675 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Use with the GNU Affero General Public License. + + Notwithstanding any other provision of this License, you have +permission to link or combine any covered work with a work licensed +under version 3 of the GNU Affero General Public License into a single +combined work, and to convey the resulting work. The terms of this +License will continue to apply to the part which is the covered work, +but the special requirements of the GNU Affero General Public License, +section 13, concerning interaction through a network will apply to the +combination as such. + + 14. Revised Versions of this License. + + The Free Software Foundation may publish revised and/or new versions of +the GNU General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + + Each version is given a distinguishing version number. If the +Program specifies that a certain numbered version of the GNU General +Public License "or any later version" applies to it, you have the +option of following the terms and conditions either of that numbered +version or of any later version published by the Free Software +Foundation. If the Program does not specify a version number of the +GNU General Public License, you may choose any version ever published +by the Free Software Foundation. + + If the Program specifies that a proxy can decide which future +versions of the GNU General Public License can be used, that proxy's +public statement of acceptance of a version permanently authorizes you +to choose that version for the Program. + + Later license versions may give you additional or different +permissions. However, no additional obligations are imposed on any +author or copyright holder as a result of your choosing to follow a +later version. + + 15. Disclaimer of Warranty. + + THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY +APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM +IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF +ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/openbsd/evocheck.cf b/openbsd/evocheck.cf new file mode 100644 index 0000000..983363f --- /dev/null +++ b/openbsd/evocheck.cf @@ -0,0 +1,3 @@ +# Configuration for evocheck +# Use this file to change configuration values defined in evocheck.sh +# Ex : IS_TMP_1777=0 diff --git a/openbsd/evocheck.sh b/openbsd/evocheck.sh new file mode 100755 index 0000000..ecbb262 --- /dev/null +++ b/openbsd/evocheck.sh @@ -0,0 +1,634 @@ +#!/bin/sh + +# EvoCheck +# Script to verify compliance of an OpenBSD server powered by Evolix + +readonly VERSION="22.08" + +# base functions + +show_version() { + cat <, + Romain Dessort , + Benoit Série , + Gregory Colpart , + Jérémy Lecour , + Tristan Pilat , + Victor Laborie , + Jérémy Dubois + and others. + +evocheck comes with ABSOLUTELY NO WARRANTY. This is free software, +and you are welcome to redistribute it under certain conditions. +See the GNU General Public License v3.0 for details. +END +} +show_help() { + cat <&1 + else + printf "%s FAILED!\n" "${check_name}" 2>&1 + fi + fi +} + +# check functions + +check_umasksudoers(){ + grep -Rq "^Defaults.*umask=0077" /etc/sudoers* || failed "IS_UMASKSUDOERS" "sudoers must set umask to 0077" +} +check_tmpnoexec(){ + mount | grep "on /tmp" | grep -q noexec || failed "IS_TMPNOEXEC" "/tmp should be mounted with the noexec option" +} +check_softdep(){ + if [ "$(grep -c softdep /etc/fstab)" -ne "$(grep -c ffs /etc/fstab)" ]; then + failed "IS_SOFTDEP" "All partitions should have the softdep option" + fi +} +check_noatime(){ + if [ "$(mount | grep -c noatime)" -ne "$(grep ffs /etc/fstab | grep -vc ^\#)" ]; then + failed "IS_NOATIME" "All partitions should be mounted with the noatime option" + fi +} +check_tmoutprofile(){ + if [ -f /etc/skel/.profile ]; then + grep -q TMOUT= /etc/skel/.profile /root/.profile || failed "IS_TMOUTPROFILE" "Add 'export TMOUT=36000' to both /etc/skel/.profile and /root/.profile files" + else + failed "IS_TMOUTPROFILE" "File /etc/skel/.profile does not exist. Both /etc/skel/.profile and /root/.profile should contain at least 'export TMOUT=36000'" + fi +} +check_raidok(){ + grep -E 'sd.*RAID' /var/run/dmesg.boot 1> /dev/null 2>&1 + RESULT=$? + if [ $RESULT -eq 0 ]; then + raid_device=$(grep -E 'sd.*RAID' /var/run/dmesg.boot | awk '{ print $1 }' | tail -1) + raid_status=$(bioctl "$raid_device" | grep softraid | awk '{ print $3 }') + if [ "$raid_status" != "Online" ]; then + failed "IS_RAIDOK" "One of the RAID disk members is faulty. Use bioctl -h $raid_device for more informations" + fi + fi +} +check_evobackup(){ + if [ -f /etc/daily.local ]; then + grep -qE "^sh /usr/share/scripts/zzz_evobackup" /etc/daily.local || failed "IS_EVOBACKUP" "Make sure 'sh /usr/share/scripts/zzz_evobackup' is present and activated in /etc/daily.local" + else + failed "IS_EVOBACKUP" "Make sure /etc/daily.local exists and 'sh /usr/share/scripts/zzz_evobackup' is present and activated in /etc/daily.local" + fi +} +check_uptodate(){ + if [ "$(command -v syspatch)" ]; then + if syspatch -c | grep -E "." 1> /dev/null 2>&1; then + failed "IS_UPTODATE" "Security update available! Update with syspatch(8)!" + fi + fi +} +check_uptime(){ + uptime=$(($(date +"%s") - $(sysctl -n kern.boottime))) + if [ "$uptime" -gt "$(( 2*365*24*60*60 ))" ]; then + failed "IS_UPTIME" "The server has an uptime of more than 2 years, reboot on new kernel advised" + fi +} +check_backupuptodate(){ + backup_dir="/home/backup" + if [ -d "${backup_dir}" ]; then + if [ -n "$(ls -A ${backup_dir})" ]; then + find "${backup_dir}" -maxdepth 1 -type f | while read -r file; do + limit=$(($(date +"%s") - 172800)) + updated_at=$(stat -f "%m" "$file") + + if [ -f "$file" ] && [ "$limit" -gt "$updated_at" ]; then + failed "IS_BACKUPUPTODATE" "$file has not been backed up" + test "${VERBOSE}" = 1 || break; + fi + done + else + failed "IS_BACKUPUPTODATE" "${backup_dir}/ is empty" + fi + else + failed "IS_BACKUPUPTODATE" "${backup_dir}/ is missing" + fi +} +check_gitperms() { + GIT_DIR="/etc/.git" + if test -d $GIT_DIR; then + expected="40700" + actual=$(stat -f "%p" $GIT_DIR) + [ "$expected" = "$actual" ] || failed "IS_GITPERMS" "$GIT_DIR must be 700" + fi +} +check_carpadvbase(){ + if ls /etc/hostname.carp* 1> /dev/null 2>&1; then + bad_advbase=0 + for advbase in $(ifconfig carp | grep advbase | awk -F 'advbase' '{print $2}' | awk '{print $1}' | xargs); do + if [ "$advbase" -gt 5 ]; then + bad_advbase=1 + fi + done + if [ "$bad_advbase" -eq 1 ]; then + failed "IS_CARPADVBASE" "At least one CARP interface has advbase greater than 5 seconds!" + fi + fi +} +check_carppreempt(){ + if ls /etc/hostname.carp* 1> /dev/null 2>&1; then + preempt=$(sysctl net.inet.carp.preempt | cut -d"=" -f2) + if [ "$preempt" -ne 1 ]; then + failed "IS_CARPPREEMPT" "The preempt function is not activated! Please type 'sysctl net.inet.carp.preempt=1' in" + fi + if [ -f /etc/sysctl.conf ]; then + grep -qE "^net.inet.carp.preempt=1" /etc/sysctl.conf || failed "IS_CARPPREEMPT" "The preempt parameter is not permanently activated! Please add 'net.inet.carp.preempt=1' in /etc/sysctl.conf" + else + failed "IS_CARPPREEMPT" "Make sure /etc/sysctl.conf exists and contains the line 'net.inet.carp.preempt=1'" + fi + fi +} +check_rebootmail(){ + if [ -f /etc/rc.local ]; then + grep -qE '^date \| mail -s "boot/reboot of' /etc/rc.local || failed "IS_REBOOTMAIL" "Make sure the line 'date | mail -s \"boot/reboot of \$hostname' is present in the /etc/rc.local file!" + else + failed "IS_REBOOTMAIL" "Make sure /etc/rc.local exist and 'date | mail -s \"boot/reboot of \$hostname' is present!" + fi +} +check_pfenabled(){ + if pfctl -si | grep Disabled 1> /dev/null 2>&1; then + failed "IS_PFENABLED" "PF is disabled! Make sure pf=NO is absent from /etc/rc.conf.local and carefully run pfctl -e" + fi +} +check_wheel(){ + if [ -f /etc/sudoers ]; then + grep -qE "^%wheel.*$" /etc/sudoers || failed "IS_WHEEL" "" + fi +} +check_pkgmirror(){ + grep -qE "^https://cdn\.openbsd\.org/pub/OpenBSD" /etc/installurl || failed "IS_PKGMIRROR" "Check whether the right repo is present in the /etc/installurl file" +} +check_history(){ + file=/root/.profile + # shellcheck disable=SC2015 + grep -qE "^HISTFILE=\$HOME/.histfile" $file && grep -qE "^export HISTSIZE=100000" $file || failed "IS_HISTORY" "Make sure both 'HISTFILE=$HOME/.histfile' and 'export HISTSIZE=100000' are present in /root/.profile" +} +check_vim(){ + if ! is_installed vim; then + failed "IS_VIM" "vim is not installed! Please add with pkg_add vim" + fi +} +check_ttyc0secure(){ + grep -Eqv "^ttyC0.*secure$" /etc/ttys || failed "IS_TTYC0SECURE" "First tty should be secured" +} +check_customsyslog(){ + grep -q EvoBSD /etc/newsyslog.conf || failed "IS_CUSTOMSYSLOG" "" +} +check_sudomaint(){ + file=/etc/sudoers + # shellcheck disable=SC2015 + grep -q "Cmnd_Alias MAINT = /usr/share/scripts/evomaintenance.sh" $file \ + && grep -q "%wheel ALL=NOPASSWD: MAINT" $file \ + || failed "IS_SUDOMAINT" "" +} +check_nrpe(){ + if ! is_installed monitoring-plugins || ! is_installed nrpe; then + failed "IS_NRPE" "nrpe and/or monitoring-plugins are not installed! Please add with pkg_add nrpe monitoring-plugins" + fi +} +check_rsync(){ + if ! is_installed rsync; then + failed "IS_RSYNC" "rsync is not installed! Please add with pkg_add rsync" + fi +} +check_cronpath(){ + grep -q "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/share/scripts" /var/cron/tabs/root || failed "IS_CRONPATH" "" +} +check_tmp_1777(){ + actual=$(stat -f "%p" /tmp) + expected="41777" + test "$expected" = "$actual" || failed "IS_TMP_1777" "/tmp must be 1777" +} +check_root_0700(){ + actual=$(stat -f "%p" /root) + expected="40700" + test "$expected" = "$actual" || failed "IS_ROOT_0700" "/root must be 700" +} +check_usrsharescripts(){ + actual=$(stat -f "%p" /usr/share/scripts) + expected="40700" + test "$expected" = "$actual" || failed "IS_USRSHARESCRIPTS" "/usr/share/scripts must be 700" +} +check_sshpermitrootno() { + if ! (sshd -T -C addr=,user=,host=,laddr=,lport=0,rdomain= 2> /dev/null | grep -qi 'permitrootlogin no'); then + failed "IS_SSHPERMITROOTNO" "PermitRoot should be set to no" + fi +} +check_evomaintenanceusers(){ + users=$(getent group evolinux-sudo | cut -d':' -f4 | tr ',' ' ') + for user in $users; do + user_home=$(getent passwd "$user" | cut -d: -f6) + if [ -n "$user_home" ] && [ -d "$user_home" ]; then + if ! grep -qs "^trap.*doas.*evomaintenance.sh" "${user_home}"/.*profile; then + echo "IS_EVOMAINTENANCEUSERS" "${user} doesn't have an evomaintenance trap" + test "${VERBOSE}" = 1 || break + fi + fi + done +} +check_evomaintenanceconf(){ + f=/etc/evomaintenance.cf + if [ -e "$f" ]; then + perms=$(stat -f "%p" $f) + test "$perms" = "100600" || echo "IS_EVOMAINTENANCECONF" "Wrong permissions on \`$f' ($perms instead of 100600)" + + { grep "^export PGPASSWORD" $f | grep -qv "your-passwd" \ + && grep "^PGDB" $f | grep -qv "your-db" \ + && grep "^PGTABLE" $f | grep -qv "your-table" \ + && grep "^PGHOST" $f | grep -qv "your-pg-host" \ + && grep "^FROM" $f | grep -qv "jdoe@example.com" \ + && grep "^FULLFROM" $f | grep -qv "John Doe " \ + && grep "^URGENCYFROM" $f | grep -qv "mama.doe@example.com" \ + && grep "^URGENCYTEL" $f | grep -qv "06.00.00.00.00" \ + && grep "^REALM" $f | grep -qv "example.com" + } || echo "IS_EVOMAINTENANCECONF" "evomaintenance is not correctly configured" + else + echo "IS_EVOMAINTENANCECONF" "Configuration file \`$f' is missing" + fi +} +check_sync(){ + if ifconfig carp | grep carp 1> /dev/null 2>&1; then + sync_script=/usr/share/scripts/sync.sh + if [ ! -f $sync_script ]; then + failed "IS_SYNC" "The sync.sh script is absent! As a carp member, a sync.sh script should be present in /usr/share/scripts" + fi + fi +} +check_defaultroute(){ + if [ -f /etc/mygate ]; then + file_route=$(cat /etc/mygate) + used_route=$(route -n show -priority 8 | grep default | awk '{print $2}') + if [ "$file_route" != "$used_route" ]; then + failed "IS_DEFAULTROUTE" "The default route in /etc/mygate is different from the one currently used" + fi + else + failed "IS_DEFAULTROUTE" "The file /etc/mygate does not exist. Make sure you have the same default route in this file as the one currently in use." + fi +} +check_ntp(){ + if grep -q "server ntp.evolix.net" /etc/ntpd.conf; then + if [ "$(wc -l /etc/ntpd.conf | awk '{print $1}')" -ne 1 ]; then + failed "IS_NTP" "The /etc/ntpd.conf file should only contains \"server ntp.evolix.net\"." + fi + else + failed "IS_NTP" "The configuration in /etc/ntpd.conf is not compliant. It should contains \"server ntp.evolix.net\"." + fi +} +check_openvpncronlog(){ + if /etc/rc.d/openvpn check > /dev/null 2>&1; then + # shellcheck disable=SC2016 + grep -q 'cp /var/log/openvpn.log /var/log/openvpn.log.$(date +\\%F) && echo "$(date +\\%F. .\\%R) - logfile turned over via cron" > /var/log/openvpn.log && gzip /var/log/openvpn.log.$(date +\\%F) && find /var/log/ -type f -name "openvpn.log.\*" -mtime .365 -exec rm {} \\+' /var/cron/tabs/root || failed "IS_OPENVPNCRONLOG" "OpenVPN is enabled but there is no log rotation in the root crontab, or the cron is not up to date (OpenVPN log rotation in newsyslog is not used because a restart is needed)." + fi +} +check_carpadvskew(){ + if ls /etc/hostname.carp* 1> /dev/null 2>&1; then + for carp in $(ifconfig carp | grep ^carp | awk '{print $1}' | tr -d ":"); do + ifconfig "$carp" | grep -q master + master=$? + ifconfig "$carp" | grep -q backup + backup=$? + advskew=$(ifconfig "$carp" | grep advbase | awk -F 'advskew' '{print $2}' | awk '{print $1}') + if [ "$master" -eq 0 ]; then + if [ "$advskew" -lt 1 ] || [ "$advskew" -gt 50 ]; then + failed "IS_CARPADVSKEW" "Interface $carp is master : advskew must be between 1 and 50, and must remain lower than that of the backup - current value : $advskew" + fi + elif [ "$backup" -eq 0 ]; then + if [ "$advskew" -lt 100 ] || [ "$advskew" -gt 150 ]; then + failed "IS_CARPADVSKEW" "Interface $carp is backup : advskew must be between 100 and 150, and must remain greater than that of the master - current value : $advskew" + fi + else + failed "IS_CARPADVSKEW" "Interface $carp is neither master nor backup. Check interface state." + fi + done + fi +} +check_nrpeopensmtpd() { + grep -Rq "^command.*check_mailq.pl -M opensmtpd" /etc/nrpe.* || failed "IS_NRPE_OPENSMTPD" "NRPE \"check_mailq\" is not configured for opensmtpd." +} +check_sshallowusers() { + grep -E -qir "(AllowUsers|AllowGroups)" /etc/ssh/sshd_config || failed "IS_SSHALLOWUSERS" "Missing AllowUsers or AllowGroups directive in sshd_config" +} +check_evobackup_exclude_mount() { + excludes_file=$(mktemp) + files_to_cleanup="${files_to_cleanup} ${excludes_file}" + + # shellcheck disable=SC2013 + for evobackup_file in $(grep -Eo "/usr/share/scripts/zzz_evobackup.*" /etc/daily.local | grep -v "^#" | awk '{print $1}'); do + # if the file seems to be a backup script, with an Rsync invocation + if grep -q "^\s*rsync" "${evobackup_file}"; then + # If rsync is not limited by "one-file-system" + # then we verify that every mount is excluded + if ! grep -q -- "^\s*--one-file-system" "${evobackup_file}"; then + grep -- "--exclude " "${evobackup_file}" | grep -E -o "\"[^\"]+\"" | tr -d '"' > "${excludes_file}" + not_excluded=$(findmnt --type nfs,nfs4,fuse.sshfs, -o target --noheadings | grep -v -f "${excludes_file}") + for mount in ${not_excluded}; do + failed "IS_EVOBACKUP_EXCLUDE_MOUNT" "${mount} is not excluded from ${evobackup_file} backup script" + done + fi + fi + done + rm -rf "${excludes_file}" +} +check_etcgit() { + export GIT_DIR="/etc/.git" GIT_WORK_TREE="/etc" + git rev-parse --is-inside-work-tree > /dev/null 2>&1 || failed "IS_ETCGIT" "/etc is not a git repository" +} +check_evolinuxsudogroup() { + if grep -q "^evolinux-sudo:" /etc/group; then + grep -qE "^%evolinux-sudo ALL ?= ?\(ALL\) SETENV: ALL" /etc/sudoers || failed "IS_EVOLINUXSUDOGROUP" "Missing evolinux-sudo directive in sudoers file" + fi +} +check_bind9munin() { + if is_installed isc-bind; then + { test -L /etc/munin/plugins/bind9 \ + && test -e /etc/munin/plugin-conf.d/bind9; + } || failed "IS_BIND9MUNIN" "missing bind plugin for munin" + fi +} +check_evolix_user() { + grep -q -E "^evolix:" /etc/passwd && failed "IS_EVOLIX_USER" "evolix user should not exist" +} +download_versions() { + # shellcheck disable=SC2039 + local file + file=${1:-} + + ## The file is supposed to list programs : each on a line, then its latest version number + ## Examples: + # evoacme 21.06 + # evomaintenance 0.6.4 + + versions_url="https://upgrades.evolix.org/versions-openbsd" + + # fetch timeout, in seconds + timeout=10 + + if command -v curl > /dev/null; then + curl -k --max-time ${timeout} --fail --silent --output "${versions_file}" "${versions_url}" + # "-k" required until OpenBSD 6.8 + elif command -v wget > /dev/null; then + wget --timeout=${timeout} --quiet "${versions_url}" -O "${versions_file}" + elif command -v GET; then + GET -t ${timeout}s "${versions_url}" > "${versions_file}" + else + failed "IS_CHECK_VERSIONS" "failed to find curl, wget or GET" + fi + test "$?" -eq 0 || failed "IS_CHECK_VERSIONS" "failed to download ${versions_url} to ${versions_file}" +} +get_command() { + # shellcheck disable=SC2039 + local program + program=${1:-} + + case "${program}" in + ## Special cases where the program name is different than the command name + evocheck) echo "${0}" ;; + evomaintenance) command -v "evomaintenance.sh" ;; + motd-carp-state) command -v "motd-carp-state.sh" ;; + + ## General case, where the program name is the same as the command name + *) command -v "${program}" ;; + esac +} +get_version() { + # shellcheck disable=SC2039 + local program + # shellcheck disable=SC2039 + local command + program=${1:-} + command=${2:-} + + case "${program}" in + ## Special case if `command --version => 'command` is not the standard way to get the version + # my_command) + # /path/to/my_command --get-version + # ;; + + motd-carp-state) + grep '^VERSION=' "${command}" | head -1 | cut -d '=' -f 2 + ;; + ## General case to get the version + *) ${command} --version 2> /dev/null | head -1 | cut -d ' ' -f 3 ;; + esac +} +get_lower_version() { + # shellcheck disable=SC2039 + local actual_version + # shellcheck disable=SC2039 + local expected_version + actual_version=${1:-} + expected_version=${2:-} + + printf "%s\n%s" "${actual_version}" "${expected_version}" | sort -V | head -n 1 +} +check_version() { + # shellcheck disable=SC2039 + local program + # shellcheck disable=SC2039 + local expected_version + program=${1:-} + expected_version=${2:-} + + command=$(get_command "${program}") + if [ -n "${command}" ]; then + actual_version=$(get_version "${program}" "${command}") + # printf "program:%s expected:%s actual:%s\n" "${program}" "${expected_version}" "${actual_version}" + if [ -z "${actual_version}" ]; then + failed "IS_CHECK_VERSIONS" "failed to lookup actual version of ${program}" + elif [ "${actual_version}" = "${expected_version}" ]; then + : # Version check OK ; to check first because of the way the check works + elif [ "$(get_lower_version "${actual_version}" "${expected_version}")" = "${actual_version}" ]; then + failed "IS_CHECK_VERSIONS" "${program} version ${actual_version} is older than expected version ${expected_version}" + elif [ "$(get_lower_version "${actual_version}" "${expected_version}")" = "${expected_version}" ]; then + failed "IS_CHECK_VERSIONS" "${program} version ${actual_version} is newer than expected version ${expected_version}, you should update your index." + fi + fi +} +add_to_path() { + # shellcheck disable=SC2039 + local new_path + new_path=${1:-} + + echo "$PATH" | grep -qF "${new_path}" || export PATH="${PATH}:${new_path}" +} +check_versions() { + versions_file=$(mktemp -p /tmp "evocheck-versions.XXXXXXXX") + files_to_cleanup="${files_to_cleanup} ${versions_file}" + + download_versions "${versions_file}" + add_to_path "/usr/share/scripts" + + grep -v '^ *#' < "${versions_file}" | while IFS= read -r line; do + # shellcheck disable=SC2039 + local program + # shellcheck disable=SC2039 + local version + program=$(echo "${line}" | cut -d ' ' -f 1) + version=$(echo "${line}" | cut -d ' ' -f 2) + + if [ -n "${program}" ]; then + if [ -n "${version}" ]; then + check_version "${program}" "${version}" + else + failed "IS_CHECK_VERSIONS" "failed to lookup expected version for ${program}" + fi + fi + done + + rm -f "${versions_file}" +} +check_root_user() { + if [ "$(grep "^root:" /etc/master.passwd | awk -F":" '{print $2}')" != "*************" ]; then + failed "IS_ROOT_USER" "root user should not have a password ; replace the password field with 'vipw' for the root user with '*************' (exactly 13 asterisks) " + fi +} + +main() { + # Default return code : 0 = no error + RC=0 + + test "${IS_UMASKSUDOERS:=1}" = 1 && check_umasksudoers + test "${IS_TMPNOEXEC:=1}" = 1 && check_tmpnoexec + test "${IS_SOFTDEP:=1}" = 1 && check_softdep + test "${IS_NOATIME:=1}" = 1 && check_noatime + test "${IS_TMOUTPROFILE:=1}" = 1 && check_tmoutprofile + test "${IS_RAIDOK:=1}" = 1 && check_raidok + test "${IS_EVOBACKUP:=1}" = 1 && check_evobackup + test "${IS_UPTODATE:=1}" = 1 && check_uptodate + test "${IS_UPTIME:=1}" = 1 && check_uptime + test "${IS_BACKUPUPTODATE:=1}" = 1 && check_backupuptodate + test "${IS_GITPERMS:=1}" = 1 && check_gitperms + test "${IS_CARPADVBASE:=1}" = 1 && check_carpadvbase + test "${IS_CARPPREEMPT:=1}" = 1 && check_carppreempt + test "${IS_REBOOTMAIL:=1}" = 1 && check_rebootmail + test "${IS_PFENABLED:=1}" = 1 && check_pfenabled + test "${IS_WHEEL:=1}" = 1 && check_wheel + test "${IS_PKGMIRROR:=1}" = 1 && check_pkgmirror + test "${IS_HISTORY:=1}" = 1 && check_history + test "${IS_VIM:=1}" = 1 && check_vim + test "${IS_TTYC0SECURE:=1}" = 1 && check_ttyc0secure + test "${IS_CUSTOMSYSLOG:=1}" = 1 && check_customsyslog + test "${IS_SUDOMAINT:=1}" = 1 && check_sudomaint + test "${IS_NRPE:=1}" = 1 && check_nrpe + test "${IS_RSYNC:=1}" = 1 && check_rsync + test "${IS_CRONPATH:=1}" = 1 && check_cronpath + test "${IS_TMP_1777:=1}" = 1 && check_tmp_1777 + test "${IS_ROOT_0700:=1}" = 1 && check_root_0700 + test "${IS_USRSHARESCRIPTS:=1}" = 1 && check_usrsharescripts + test "${IS_SSHPERMITROOTNO:=1}" = 1 && check_sshpermitrootno + test "${IS_EVOMAINTENANCEUSERS:=1}" = 1 && check_evomaintenanceusers + test "${IS_EVOMAINTENANCECONF:=1}" = 1 && check_evomaintenanceconf + test "${IS_SYNC:=1}" = 1 && check_sync + test "${IS_DEFAULTROUTE:=1}" = 1 && check_defaultroute + test "${IS_NTP:=1}" = 1 && check_ntp + test "${IS_OPENVPNCRONLOG:=1}" = 1 && check_openvpncronlog + test "${IS_CARPADVSKEW:=1}" = 1 && check_carpadvskew + test "${IS_NRPE_OPENSMTPD:=1}" = 1 && check_nrpeopensmtpd + test "${IS_SSHALLOWUSERS:=1}" = 1 && check_sshallowusers + test "${IS_EVOBACKUP_EXCLUDE_MOUNT:=1}" = 1 && check_evobackup_exclude_mount + test "${IS_ETCGIT:=1}" = 1 && check_etcgit + test "${IS_EVOLINUXSUDOGROUP:=1}" = 1 && check_evolinuxsudogroup + test "${IS_BIND9MUNIN:=1}" = 1 && check_bind9munin + test "${IS_EVOLIX_USER:=1}" = 1 && check_evolix_user + test "${IS_CHECK_VERSIONS:=1}" = 1 && check_versions + test "${IS_ROOT_USER:=1}" = 1 && check_root_user + + exit ${RC} +} +cleanup_temp_files() { + # shellcheck disable=SC2086 + rm -f ${files_to_cleanup} +} + +# Disable LANG* +export LANG=C +export LANGUAGE=C + +files_to_cleanup="" +trap cleanup_temp_files 0 + +# Source configuration file +# shellcheck disable=SC1091 +test -f /etc/evocheck.cf && . /etc/evocheck.cf + +# Parse options +# based on https://gist.github.com/deshion/10d3cb5f88a21671e17a +while :; do + case $1 in + -h|-\?|--help) + show_help + exit 0 + ;; + --version) + show_version + exit 0 + ;; + --cron) + IS_UPTIME=0 + IS_CHECK_VERSIONS=0 + ;; + -v|--verbose) + VERBOSE=1 + ;; + -q|--quiet) + QUIET=1 + VERBOSE=0 + ;; + --) + # End of all options. + shift + break + ;; + -?*|[[:alnum:]]*) + # ignore unknown options + printf 'WARN: Unknown option (ignored): %s\n' "$1" >&2 + ;; + *) + # Default case: If no more options then break out of the loop. + break + ;; + esac + + shift +done + +# shellcheck disable=SC2086 +main ${ARGS}