evolix/evocheck
evolix/evocheck
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evocheck/evocheck.sh

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#!/bin/sh
# EvoCheck
# Script to verify compliance of an OpenBSD server powered by Evolix
readonly VERSION="20.04.1"
# Disable LANG*
export LANG=C
export LANGUAGE=C
# Default return code : 0 = no error
RC=0
# Verbose function
verbose() {
msg="${1:-$(cat /dev/stdin)}"
[ "${VERBOSE}" -eq 1 ] && [ -n "${msg}" ] && echo "${msg}"
}
# Source configuration file
test -f /etc/evocheck.cf && . /etc/evocheck.cf
# Functions
show_help() {
cat <<END
NAME:
evocheck - a system configuration verification tool
VERSION:
${VERSION}
DESCRIPTION:
A script that verifies Evolix conventions on OpenBSD servers
AUTHORS:
Benoit Serie <bserie@evolix.fr>
Gregory Colpart <reg@evolix.fr>
Jeremy Dubois <jdubois@evolix.fr>
Jeremy Lecour <jlecour@evolix.fr>
Ludovic Poujol <lpoujol@evolix.fr>
Romain Dessort <rdessort@evolix.fr>
Tristan Pilat <tpilat@evolix.fr>
Victor Laborie <vlaborie@evolix.fr>
USAGE: evocheck
or evocheck --cron
or evocheck --quiet
or evocheck --verbose
OPTIONS:
--cron disable a few checks
-v, --verbose increase verbosity of checks
-q, --quiet nothing is printed on stdout nor stderr
-h, --help, --version print this message and exit
COPYRIGHT:
evocheck comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
See the GNU General Public License v3.0 for details. 2009-2020
END
}
is_installed(){
for pkg in "$@"; do
pkg_info | grep -q $pkg || return 1
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
}
# 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_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
# If --cron is passed, ignore some checks.
if [ "$1" = "--cron" ]; then
IS_KERNELUPTODATE=0
IS_UPTIME=0
fi
if [ "$IS_UMASKSUDOERS" = 1 ]; then
grep -E -qr "umask=0077" /etc/sudoers* || failed "IS_UMASKSUDOERS" "sudoers must set umask to 0077"
fi
if [ "$IS_TMPNOEXEC" = 1 ]; then
mount | grep "on /tmp" | grep -q noexec || failed "IS_TMPNOEXEC" "/tmp should be mounted with the noexec option"
fi
if [ "$IS_TMOUTPROFILE" = 1 ]; then
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"
fi
# Check RAID state (bioctl)
#if [ "$IS_RAIDOK" = 1 ]; then
# TODO
#fi
# Check Evoackup installation
if [ "$IS_EVOBACKUP" = 1 ]; then
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
fi
# Check whether the system should be restarted (after a kernel update)
#if [ "$IS_KERNELUPTODATE" = 1 ]; then
# TODO
#fi
# Check if the server is running for more than a year.
if [ "$IS_UPTIME" = 1 ]; then
if [ $(uptime | cut -d" " -f 4) -gt 365 ]; then
failed "IS_UPTIME" "The server is running for more than a year!"
fi
fi
# Check if files in /home/backup/ are up-to-date
#if [ "$IS_BACKUPUPTODATE" = 1 ]; then
# TODO
#fi
# Check if /etc/.git/ has read/write permissions for root only.
if [ "$IS_GITPERMS" = 1 ]; then
test -d /etc/.git && [ "$(stat -f %p /etc/.git/)" = "40700" ] || failed "IS_GITPERMS" "The directiry /etc/.git sould be in 700"
fi
#if [ "$IS_OLD_HOME_DIR" = 1 ]; then
#fi
if [ "$IS_ADVBASE" = 1 ]; then
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
failed "IS_ADVBASE" "At least one CARP interface has advbase greater than 5 seconds!"
fi
done
fi
fi
if [ "$IS_PREEMPT" = 1 ]; then
if ls /etc/hostname.carp* 1> /dev/null 2>&1; then
preempt=$(sysctl net.inet.carp.preempt | cut -d"=" -f2)
if [[ "$preempt" -ne 1 ]]; then
failed "IS_PREEMPT" "The preempt function is not activated! Please type 'sysctl net.inet.carp.preempt=1' in"
fi
if [ -f /etc/sysctl.conf ]; then
grep -qE "^net.inet.carp.preempt=1" /etc/sysctl.conf || failed "IS_PREEMPT" "The preempt parameter is not permanently activated! Please add 'net.inet.carp.preempt=1' in /etc/sysctl.conf"
else
failed "IS_PREEMPT" "Make sure /etc/sysctl.conf exists and contains the line 'net.inet.carp.preempt=1'"
fi
fi
fi
if [ "$IS_REBOOTMAIL" = 1 ]; then
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
fi
#if [ "$IS_PFENABLED" = 1 ]; then
# TODO
#fi
#if [ "$IS_PFCUSTOM" = 1 ]; then
# TODO
#fi
if [ "$IS_SOFTDEP" = 1 ]; then
grep -q "softdep" /etc/fstab || failed "IS_SOFTDEP" ""
fi
if [ "$IS_WHEEL" = 1 ]; then
if [ -f /etc/sudoers ]; then
grep -qE "^%wheel.*$" /etc/sudoers || failed "IS_WHEEL" ""
fi
fi
if [ "$IS_PKGMIRROR" = 1 ]; then
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"
fi
if [ "$IS_HISTORY" = 1 ]; then
file=/root/.profile
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"
fi
if [ "$IS_VIM" = 1 ]; then
if ! is_installed vim; then
failed "IS_VIM" "vim is not installed! Please add with pkg_add vim"
fi
fi
if [ "$IS_TTYC0SECURE" = 1 ]; then
grep -Eqv "^ttyC0.*secure$" /etc/ttys || failed "IS_TTYC0SECURE" "First tty should be secured"
fi
if [ "$IS_CUSTOMSYSLOG" = 1 ]; then
grep -q Evolix /etc/newsyslog.conf || failed "IS_CUSTOMSYSLOG" ""
fi
if [ "$IS_SUDOMAINT" = 1 ]; then
f=/etc/sudoers
grep -q "Cmnd_Alias MAINT = /usr/share/scripts/evomaintenance.sh" $f \
&& grep -q "ADMIN ALL=NOPASSWD: MAINT" $f \
|| failed "IS_SUDOMAINT" ""
fi
if [ "$IS_POSTGRESQL" = 1 ]; then
if ! is_installed postgresql-client; then
failed "IS_POSTGRESQL" "postgresql-client is not installed! Please add with pkg_add postgresql-client"
fi
fi
if [ "$IS_NRPE" = 1 ]; then
if ! is_installed monitoring-plugins || ! is_installed nrpe; then
failed "IS_NRPE" "nrpe and/or monitoring-plugins are not installed! Please add with pkg_add nrpe monitoring-plugins"
fi
fi
if [ "$IS_RSYNC" = 1 ]; then
if ! is_installed rsync; then
failed "IS_RSYNC" "rsync is not installed! Please add with pkg_add rsync"
fi
fi
if [ "$IS_CRONPATH" = 1 ]; then
grep -q "PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin" /var/cron/tabs/root || failed "IS_CRONPATH" ""
fi
if [ "$IS_TMP_1777" = 1 ]; then
ls -ld /tmp | grep -q drwxrwxrwt || failed "IS_TMP_1777" ""
fi
if [ "$IS_ROOT_0700" = 1 ]; then
ls -ld /root | grep -q drwx------ || failed "IS_ROOT_0700" ""
fi
if [ "$IS_USRSHARESCRIPTS" = 1 ]; then
ls -ld /usr/share/scripts | grep -q drwx------ || failed "IS_USRSHARESCRIPTS" ""
fi
if [ "$IS_SSHPERMITROOTNO" = 1 ]; then
grep -qE ^PermitRoot /etc/ssh/sshd_config && ( grep -E -qi "PermitRoot.*no" /etc/ssh/sshd_config || failed "IS_SSHPERMITROOTNO" "" )
fi
if [ "$IS_EVOMAINTENANCEUSERS" = 1 ]; then
# Can be changed in evocheck.cf
homeDir=${homeDir:-/home}
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!"
fi
done
fi
# Verification de la configuration d'evomaintenance
if [ "$IS_EVOMAINTENANCECONF" = 1 ]; then
f=/etc/evomaintenance.cf
( test -e $f \
&& test $(stat -f %p $f) = "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 <jdoe@example.com>" \
&& 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" ) || failed "IS_EVOMAINTENANCECONF" ""
fi
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