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#!/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 = "20.04.1"
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# Disable LANG*
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export LANG = C
export LANGUAGE = C
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# Default return code : 0 = no error
RC = 0
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# Verbose function
verbose( ) {
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
show_help( ) {
cat <<END
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NAME:
evocheck - a system configuration verification tool
VERSION:
${ VERSION }
DESCRIPTION:
A script that verifies Evolix conventions on OpenBSD servers
AUTHORS:
Benoit Serie <bserie@evolix.fr>
Gregory Colpart <reg@evolix.fr>
Jeremy Dubois <jdubois@evolix.fr>
Jeremy Lecour <jlecour@evolix.fr>
Ludovic Poujol <lpoujol@evolix.fr>
Romain Dessort <rdessort@evolix.fr>
Tristan Pilat <tpilat@evolix.fr>
Victor Laborie <vlaborie@evolix.fr>
USAGE: evocheck
or evocheck --cron
or evocheck --quiet
or evocheck --verbose
OPTIONS:
--cron disable a few checks
-v, --verbose increase verbosity of checks
-q, --quiet nothing is printed on stdout nor stderr
-h, --help, --version print this message and exit
COPYRIGHT:
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. 2009-2020
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END
}
is_installed( ) {
for pkg in " $@ " ; do
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pkg_info | grep -q $pkg || return 1
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done
}
# logging
failed( ) {
check_name = $1
shift
check_comments = $*
RC = 1
if [ " ${ QUIET } " != 1 ] ; then
if [ -n " ${ check_comments } " ] && [ " ${ VERBOSE } " = 1 ] ; then
printf "%s FAILED! %s\n" " ${ check_name } " " ${ check_comments } " 2>& 1
else
printf "%s FAILED!\n" " ${ check_name } " 2>& 1
fi
fi
}
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# If --cron is passed, ignore some checks.
if [ " $1 " = "--cron" ] ; then
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_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
RESULT = $?
if [ $RESULT -eq 0 ] ; then
raid_device = $( egrep 'sd.*RAID' /var/run/dmesg.boot | awk '{ print $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
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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 whether the system should be restarted (after a kernel update)
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check_kerneluptodate( ) {
}
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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_backuptodate( ) {
}
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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_oldhomedir( ) {
}
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check_advbase( ) {
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if ls /etc/hostname.carp* 1> /dev/null 2>& 1; then
for advbase in $( ifconfig carp | grep advbase | awk -F 'advbase' '{print $2}' | awk '{print $1}' | xargs) ; do
if [ [ " $advbase " -gt 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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done
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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
preempt = $( sysctl net.inet.carp.preempt | cut -d"=" -f2)
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
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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check_pfcustom( ) {
}
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check_softdep( ) {
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grep -q "softdep" /etc/fstab || failed "IS_SOFTDEP" ""
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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 Evolix /etc/newsyslog.conf || failed "IS_CUSTOMSYSLOG" ""
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}
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check_sudomaint( ) {
file = /etc/sudoers
grep -q "Cmnd_Alias MAINT = /usr/share/scripts/evomaintenance.sh" $file \
&& grep -q "ADMIN ALL=NOPASSWD: MAINT" $file \
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|| failed "IS_SUDOMAINT" ""
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}
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check_postgresql( ) {
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if ! is_installed postgresql-client; then
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failed "IS_POSTGRESQL" "postgresql-client is not installed! Please add with pkg_add postgresql-client"
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fi
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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"
fi
}
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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 "PATH=/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
homeDir = ${ homeDir :- /home }
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sudoers = "/etc/sudoers"
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
grep -qs "^trap.*sudo.*evomaintenance.sh" ${ homeDir } /${ i } /.*profile
if [ $? != 0 ] ; then
failed "IS_EVOMAINTENANCEUSERS" " $i doesn't have evomaintenance trap! "
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fi
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done
}
check_evomaintenanceconf( ) {
file = /etc/evomaintenance.cf
( test -e $file \
&& test $( stat -f %p $file ) = "100600" \
&& grep "^export PGPASSWORD" $file | grep -qv "your-passwd" \
&& grep "^PGDB" $file | grep -qv "your-db" \
&& grep "^PGTABLE" $file | grep -qv "your-table" \
&& grep "^PGHOST" $file | grep -qv "your-pg-host" \
&& grep "^FROM" $file | grep -qv "jdoe@example.com" \
&& grep "^FULLFROM" $file | grep -qv "John Doe <jdoe@example.com>" \
&& grep "^URGENCYFROM" $file | grep -qv "mama.doe@example.com" \
&& grep "^URGENCYTEL" $file | grep -qv "06.00.00.00.00" \
&& grep "^REALM" $file | grep -qv "example.com" ) || failed "IS_EVOMAINTENANCECONF" ""
}
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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_TMOUTPROFILE : =1 } " = 1 && check_tmoutprofile
test " ${ IS_RAIDOK : =1 } " = 1 && check_raidok
test " ${ IS_EVOBACKUP : =1 } " = 1 && check_evobackup
test " ${ IS_KERNELUPTODATE : =1 } " = 1 && check_kerneluptodate
test " ${ IS_UPTIME : =1 } " = 1 && check_uptime
test " ${ IS_BACKUPUPTODATE : =1 } " = 1 && check_backuptodate
test " ${ IS_GITPERMS : =1 } " = 1 && check_gitperms
test " ${ IS_OLD_HOME_DIR : =1 } " = 1 && check_oldhomedir
test " ${ IS_ADVBASE : =1 } " = 1 && check_advbase
test " ${ IS_PREEMPT : =1 } " = 1 && check_preempt
test " ${ IS_REBOOTMAIL : =1 } " = 1 && check_rebootmail
test " ${ IS_PFENABLED : =1 } " = 1 && check_pfenabled
test " ${ IS_PFCUSTOM : =1 } " = 1 && check_pfcustom
test " ${ IS_SOFTDEP : =1 } " = 1 && check_softdep
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_POSTGRESQL : =1 } " = 1 && check_postgresql
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_tmp1777
test " ${ IS_ROOT_0700 : =1 } " = 1 && check_root0700
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
exit ${ RC }
}
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# Parse options
# based on https://gist.github.com/deshion/10d3cb5f88a21671e17a
while :; do
case $1 in
-h| -\? | --help| --version)
show_help
exit 0
; ;
--cron)
IS_KERNELUPTODATE = 0
IS_UPTIME = 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
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main ${ ARGS }