438 lines
14 KiB
Bash
438 lines
14 KiB
Bash
#!/bin/sh
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# EvoCheck
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# Script to verify compliance of an OpenBSD server powered by Evolix
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readonly VERSION="6.7.7"
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# Disable LANG*
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export LANG=C
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export LANGUAGE=C
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# Default return code : 0 = no error
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RC=0
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# Verbose function
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verbose() {
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msg="${1:-$(cat /dev/stdin)}"
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[ "${VERBOSE}" -eq 1 ] && [ -n "${msg}" ] && echo "${msg}"
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}
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# Source configuration file
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test -f /etc/evocheck.cf && . /etc/evocheck.cf
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# Functions
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show_help() {
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cat <<END
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NAME:
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evocheck - a system configuration verification tool
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VERSION:
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${VERSION}
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DESCRIPTION:
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A script that verifies Evolix conventions on OpenBSD servers
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AUTHORS:
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Benoit Serie <bserie@evolix.fr>
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Gregory Colpart <reg@evolix.fr>
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Jeremy Dubois <jdubois@evolix.fr>
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Jeremy Lecour <jlecour@evolix.fr>
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Ludovic Poujol <lpoujol@evolix.fr>
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Romain Dessort <rdessort@evolix.fr>
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Tristan Pilat <tpilat@evolix.fr>
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Victor Laborie <vlaborie@evolix.fr>
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USAGE: evocheck
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or evocheck --cron
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or evocheck --quiet
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or evocheck --verbose
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OPTIONS:
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--cron disable a few checks
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-v, --verbose increase verbosity of checks
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-q, --quiet nothing is printed on stdout nor stderr
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-h, --help, --version print this message and exit
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COPYRIGHT:
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evocheck comes with ABSOLUTELY NO WARRANTY. This is free software,
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and you are welcome to redistribute it under certain conditions.
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See the GNU General Public License v3.0 for details. 2009-2020
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END
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}
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is_installed(){
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for pkg in "$@"; do
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pkg_info | grep -q $pkg || return 1
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done
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}
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# logging
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failed() {
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check_name=$1
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shift
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check_comments=$*
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RC=1
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if [ "${QUIET}" != 1 ]; then
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if [ -n "${check_comments}" ] && [ "${VERBOSE}" = 1 ]; then
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printf "%s FAILED! %s\n" "${check_name}" "${check_comments}" 2>&1
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else
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printf "%s FAILED!\n" "${check_name}" 2>&1
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fi
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fi
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}
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# If --cron is passed, ignore some checks.
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if [ "$1" = "--cron" ]; then
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IS_KERNELUPTODATE=0
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IS_UPTIME=0
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fi
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check_umasksudoers(){
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grep -E -qr "umask=0077" /etc/sudoers* || failed "IS_UMASKSUDOERS" "sudoers must set umask to 0077"
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}
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check_tmpnoexec(){
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mount | grep "on /tmp" | grep -q noexec || failed "IS_TMPNOEXEC" "/tmp should be mounted with the noexec option"
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}
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check_softdep(){
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if [ $(grep -c softdep /etc/fstab) -ne $(grep -c ffs /etc/fstab) ]; then
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failed "IS_SOFTDEP" "All partitions should have the softdep option"
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fi
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}
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check_noatime(){
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if [ $(mount | grep -c noatime) -ne $(grep -c ffs /etc/fstab) ]; then
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failed "IS_NOATIME" "All partitions should be mounted with the noatime option"
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fi
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}
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check_tmoutprofile(){
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grep -q TMOUT= /etc/skel/.profile /root/.profile || failed "IS_TMOUTPROFILE" "In order to fix, add 'export TMOUT=36000' to both /etc/skel/.profile and /root/.profile files"
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}
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check_raidok(){
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egrep 'sd.*RAID' /var/run/dmesg.boot 1> /dev/null 2>&1
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RESULT=$?
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if [ $RESULT -eq 0 ]; then
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raid_device=$(egrep 'sd.*RAID' /var/run/dmesg.boot | awk '{ print $1 }' | tail -1)
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raid_status=$(bioctl $raid_device | grep softraid | awk '{ print $3 }')
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if [ $raid_status != "Online" ]; then
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failed "IS_RAIDOK" "One of the RAID disk members is faulty. Use bioctl -h $raid_device for more informations"
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fi
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fi
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}
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check_evobackup(){
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if [ -f /etc/daily.local ]; then
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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"
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else
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failed "IS_EVOBACKUP" "Make sure /etc/daily.local exists and 'sh /usr/share/scripts/zzz_evobackup' is present and activated in /etc/daily.local"
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fi
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}
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check_uptodate(){
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if [ $(command -v syspatch) ]; then
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if syspatch -c | egrep "." 1> /dev/null 2>&1; then
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failed "IS_UPTODATE" "Security update available! Update with syspatch(8)!"
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fi
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fi
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}
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check_uptime(){
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if [ $(uptime | cut -d" " -f 4) -gt 365 ]; then
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failed "IS_UPTIME" "The server is running for more than a year!"
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fi
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}
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check_backupuptodate(){
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backup_dir="/home/backup"
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if [ -d "${backup_dir}" ]; then
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if [ -n "$(ls -A ${backup_dir})" ]; then
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for file in ${backup_dir}/*; do
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let "limit = $(date +"%s") - 172800"
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updated_at=$(stat -f "%m" "$file")
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if [ -f "$file" ] && [ "$limit" -gt "$updated_at" ]; then
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failed "IS_BACKUPUPTODATE" "$file has not been backed up"
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test "${VERBOSE}" = 1 || break;
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fi
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done
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else
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failed "IS_BACKUPUPTODATE" "${backup_dir}/ is empty"
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fi
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else
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failed "IS_BACKUPUPTODATE" "${backup_dir}/ is missing"
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fi
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}
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check_gitperms(){
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test -d /etc/.git && [ "$(stat -f %p /etc/.git/)" = "40700" ] || failed "IS_GITPERMS" "The directiry /etc/.git sould be in 700"
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}
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check_advbase(){
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if ls /etc/hostname.carp* 1> /dev/null 2>&1; then
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bad_advbase=0
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for advbase in $(ifconfig carp | grep advbase | awk -F 'advbase' '{print $2}' | awk '{print $1}' | xargs); do
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if [[ "$advbase" -gt 5 ]]; then
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bad_advbase=1
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fi
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done
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if [[ "$bad_advbase" -eq 1 ]]; then
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failed "IS_ADVBASE" "At least one CARP interface has advbase greater than 5 seconds!"
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fi
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fi
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}
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check_preempt(){
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if ls /etc/hostname.carp* 1> /dev/null 2>&1; then
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preempt=$(sysctl net.inet.carp.preempt | cut -d"=" -f2)
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if [[ "$preempt" -ne 1 ]]; then
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failed "IS_PREEMPT" "The preempt function is not activated! Please type 'sysctl net.inet.carp.preempt=1' in"
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fi
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if [ -f /etc/sysctl.conf ]; then
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grep -qE "^net.inet.carp.preempt=1" /etc/sysctl.conf || failed "IS_PREEMPT" "The preempt parameter is not permanently activated! Please add 'net.inet.carp.preempt=1' in /etc/sysctl.conf"
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else
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failed "IS_PREEMPT" "Make sure /etc/sysctl.conf exists and contains the line 'net.inet.carp.preempt=1'"
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fi
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fi
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}
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check_rebootmail(){
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if [ -f /etc/rc.local ]; then
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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!"
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else
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failed "IS_REBOOTMAIL" "Make sure /etc/rc.local exist and 'date | mail -s \"boot/reboot of \$hostname' is present!"
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fi
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}
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check_pfenabled(){
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if pfctl -si | grep Disabled 1> /dev/null 2>&1; then
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failed "IS_PFENABLED" "PF is disabled! Make sure pf=NO is absent from /etc/rc.conf.local and carefully run pfctl -e"
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fi
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}
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check_pfcustom(){
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}
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check_wheel(){
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if [ -f /etc/sudoers ]; then
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grep -qE "^%wheel.*$" /etc/sudoers || failed "IS_WHEEL" ""
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fi
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}
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check_pkgmirror(){
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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"
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}
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check_history(){
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file=/root/.profile
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grep -qE "^HISTFILE=\$HOME/.histfile" $file && grep -qE "^export HISTSIZE=10000" $file || failed "IS_HISTORY" "Make sure both 'HISTFILE=$HOME/.histfile' and 'export HISTSIZE=10000' are present in /root/.profile"
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}
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check_vim(){
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if ! is_installed vim; then
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failed "IS_VIM" "vim is not installed! Please add with pkg_add vim"
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fi
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}
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check_ttyc0secure(){
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grep -Eqv "^ttyC0.*secure$" /etc/ttys || failed "IS_TTYC0SECURE" "First tty should be secured"
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}
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check_customsyslog(){
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grep -q EvoBSD /etc/newsyslog.conf || failed "IS_CUSTOMSYSLOG" ""
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}
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check_sudomaint(){
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file=/etc/sudoers
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grep -q "Cmnd_Alias MAINT = /usr/share/scripts/evomaintenance.sh" $file \
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&& grep -q "%wheel ALL=NOPASSWD: MAINT" $file \
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|| failed "IS_SUDOMAINT" ""
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}
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check_nrpe(){
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if ! is_installed monitoring-plugins || ! is_installed nrpe; then
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failed "IS_NRPE" "nrpe and/or monitoring-plugins are not installed! Please add with pkg_add nrpe monitoring-plugins"
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fi
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}
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check_rsync(){
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if ! is_installed rsync; then
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failed "IS_RSYNC" "rsync is not installed! Please add with pkg_add rsync"
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fi
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}
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check_cronpath(){
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grep -q "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/share/scripts" /var/cron/tabs/root || failed "IS_CRONPATH" ""
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}
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check_tmp1777(){
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ls -ld /tmp | grep -q drwxrwxrwt || failed "IS_TMP_1777" ""
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}
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check_root0700(){
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ls -ld /root | grep -q drwx------ || failed "IS_ROOT_0700" ""
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}
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check_usrsharescripts(){
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ls -ld /usr/share/scripts | grep -q drwx------ || failed "IS_USRSHARESCRIPTS" ""
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}
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check_sshpermitrootno() {
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grep -qE ^PermitRoot /etc/ssh/sshd_config && ( grep -E -qi "PermitRoot.*no" /etc/ssh/sshd_config || failed "IS_SSHPERMITROOTNO" "" )
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}
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check_evomaintenanceusers(){
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# Can be changed in evocheck.cf
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homeDir=${homeDir:-/home}
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sudoers="/etc/sudoers"
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for i in $( (grep "^User_Alias *ADMIN" $sudoers | cut -d= -f2 | tr -d " "; grep ^sudo /etc/group |cut -d: -f 4) | tr "," "\n" |sort -u); do
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grep -qs "^trap.*sudo.*evomaintenance.sh" ${homeDir}/${i}/.*profile
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if [ $? != 0 ]; then
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failed "IS_EVOMAINTENANCEUSERS" "$i doesn't have evomaintenance trap!"
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fi
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done
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}
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check_evomaintenanceconf(){
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file=/etc/evomaintenance.cf
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( test -e $file \
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&& test $(stat -f %p $file) = "100600" \
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&& grep "^export PGPASSWORD" $file |grep -qv "your-passwd" \
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&& grep "^PGDB" $file |grep -qv "your-db" \
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&& grep "^PGTABLE" $file |grep -qv "your-table" \
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&& grep "^PGHOST" $file |grep -qv "your-pg-host" \
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&& grep "^FROM" $file |grep -qv "jdoe@example.com" \
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&& grep "^FULLFROM" $file |grep -qv "John Doe <jdoe@example.com>" \
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&& grep "^URGENCYFROM" $file |grep -qv "mama.doe@example.com" \
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&& grep "^URGENCYTEL" $file |grep -qv "06.00.00.00.00" \
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&& grep "^REALM" $file |grep -qv "example.com" ) || failed "IS_EVOMAINTENANCECONF" ""
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}
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check_sync(){
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if ifconfig carp | grep carp 1> /dev/null 2>&1; then
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sync_script=/usr/share/scripts/sync.sh
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if [ ! -f $sync_script ]; then
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failed "IS_SYNC" "The sync.sh script is absent! As a carp member, a sync.sh script should be present in /usr/share/scripts"
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fi
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fi
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}
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check_defaultroute(){
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if [ -f /etc/mygate ]; then
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file_route=$(cat /etc/mygate)
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used_route=$(route -n show -priority 8 | grep default | awk '{print $2}')
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if [ "$file_route" != "$used_route" ]; then
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failed "IS_DEFAULTROUTE" "The default route in /etc/mygate is different from the one currently used"
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fi
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else
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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."
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fi
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}
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check_ntp(){
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if grep -q "server ntp.evolix.net" /etc/ntpd.conf; then
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if [ $(wc -l /etc/ntpd.conf | awk '{print $1}') -ne 1 ]; then
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failed "IS_NTP" "The /etc/ntpd.conf file should only contains \"server ntp.evolix.net\"."
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fi
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else
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failed "IS_NTP" "The configuration in /etc/ntpd.conf is not compliant. It should contains \"server ntp.evolix.net\"."
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fi
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}
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check_openvpncronlog(){
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if /etc/rc.d/openvpn check > /dev/null 2>&1; then
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grep -q 'cp /var/log/openvpn.log /var/log/openvpn.log.$(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)."
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fi
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}
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main() {
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# Default return code : 0 = no error
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RC=0
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test "${IS_UMASKSUDOERS:=1}" = 1 && check_umasksudoers
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test "${IS_TMPNOEXEC:=1}" = 1 && check_tmpnoexec
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test "${IS_SOFTDEP:=1}" = 1 && check_softdep
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test "${IS_NOATIME:=1}" = 1 && check_noatime
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test "${IS_TMOUTPROFILE:=1}" = 1 && check_tmoutprofile
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test "${IS_RAIDOK:=1}" = 1 && check_raidok
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test "${IS_EVOBACKUP:=1}" = 1 && check_evobackup
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test "${IS_UPTODATE:=1}" = 1 && check_uptodate
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test "${IS_UPTIME:=1}" = 1 && check_uptime
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test "${IS_BACKUPUPTODATE:=1}" = 1 && check_backupuptodate
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test "${IS_GITPERMS:=1}" = 1 && check_gitperms
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test "${IS_ADVBASE:=1}" = 1 && check_advbase
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test "${IS_PREEMPT:=1}" = 1 && check_preempt
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test "${IS_REBOOTMAIL:=1}" = 1 && check_rebootmail
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test "${IS_PFENABLED:=1}" = 1 && check_pfenabled
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test "${IS_PFCUSTOM:=1}" = 1 && check_pfcustom
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test "${IS_WHEEL:=1}" = 1 && check_wheel
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test "${IS_PKGMIRROR:=1}" = 1 && check_pkgmirror
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test "${IS_HISTORY:=1}" = 1 && check_history
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test "${IS_VIM:=1}" = 1 && check_vim
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test "${IS_TTYC0SECURE:=1}" = 1 && check_ttyc0secure
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test "${IS_CUSTOMSYSLOG:=1}" = 1 && check_customsyslog
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test "${IS_SUDOMAINT:=1}" = 1 && check_sudomaint
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test "${IS_NRPE:=1}" = 1 && check_nrpe
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test "${IS_RSYNC:=1}" = 1 && check_rsync
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test "${IS_CRONPATH:=1}" = 1 && check_cronpath
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test "${IS_TMP_1777:=1}" = 1 && check_tmp1777
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test "${IS_ROOT_0700:=1}" = 1 && check_root0700
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test "${IS_USRSHARESCRIPTS:=1}" = 1 && check_usrsharescripts
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test "${IS_SSHPERMITROOTNO:=1}" = 1 && check_sshpermitrootno
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test "${IS_EVOMAINTENANCEUSERS:=1}" = 1 && check_evomaintenanceusers
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test "${IS_EVOMAINTENANCECONF:=1}" = 1 && check_evomaintenanceconf
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test "${IS_SYNC:=1}" = 1 && check_sync
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test "${IS_DEFAULTROUTE:=1}" = 1 && check_defaultroute
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test "${IS_NTP:=1}" = 1 && check_ntp
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test "${IS_OPENVPNCRONLOG:=1}" = 1 && check_openvpncronlog
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exit ${RC}
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}
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# Parse options
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# based on https://gist.github.com/deshion/10d3cb5f88a21671e17a
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while :; do
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case $1 in
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-h|-\?|--help|--version)
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show_help
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exit 0
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;;
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--cron)
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IS_KERNELUPTODATE=0
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IS_UPTIME=0
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;;
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-v|--verbose)
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VERBOSE=1
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;;
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-q|--quiet)
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QUIET=1
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VERBOSE=0
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;;
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--)
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# End of all options.
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shift
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break
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;;
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-?*|[[:alnum:]]*)
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# ignore unknown options
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printf 'WARN: Unknown option (ignored): %s\n' "$1" >&2
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;;
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*)
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# Default case: If no more options then break out of the loop.
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break
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;;
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esac
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shift
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done
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main ${ARGS}
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