#!/bin/sh

# EvoCheck script

# version 0.3.2-beta
# Copyright 2009 Gregory Colpart <reg@evolix.fr>, Evolix <info@evolix.fr>

# Disable LANG*
export LANG=C
export LANGUAGE=C

# Default configuration values
IS_TMP_1777=1
IS_ROOT_0700=1
IS_VARTMPFS=1
IS_USRSHARESCRIPTS=1
IS_SERVEURBASE=1
IS_LOGROTATECONF=1
IS_SYSLOGCONF=1
IS_DEBIANSECURITY=1
IS_APTITUDEONLY=1
IS_USRRO=1
IS_TMPNOEXEC=1
IS_LISTCHANGESCONF=1
IS_DPKGWARNING=1
IS_CUSTOMCRONTAB=1
IS_CUSTOMSUDOERS=1
IS_SSHPERMITROOTNO=1
IS_SSHALLOWUSERS=1
IS_TMOUTPROFILE=1
IS_ALERT5BOOT=1
IS_ALERT5MINIFW=1
IS_NRPEPERMS=1
IS_MINIFWPERMS=1
IS_NRPEDISKS=1
IS_NRPEPOSTFIX=1
IS_GRSECPROCS=1
IS_UMASKSUDOERS=1
IS_EVOMAINTENANCEUSERS=1
IS_APACHEMUNIN=1
IS_MYSQLUTILS=1
IS_RAIDSOFT=1
IS_AWSTATSLOGFORMAT=1
IS_MUNINLOGROTATE=1
IS_EVOMAINTENANCECONF=1
IS_METCHE=1
IS_SQUID=1
IS_MODDEFLATE=1
IS_LOG2MAILAPACHE=1
IS_LOG2MAILMYSQL=1
IS_LOG2MAILSQUID=1
IS_BINDCHROOT=1
IS_REPVOLATILE=1
IS_AUTOIF=1
IS_TOOMUCHDEBIANSYSMAINT=1
IS_USERLOGROTATE=1
IS_MODSECURITY=1
IS_APACHECTL=1
IS_SAMBAPINPRIORITY=1

# Source configuration file
test -f /etc/evocheck.cf && . /etc/evocheck.cf

# Functions
function is_pack_web {
	test -e /usr/share/scripts/web-add.sh
}

function is_pack_samba {
	test -e /usr/share/scripts/add.pl
}

function is_installed {
	for pkg in $*; do
		dpkg -l $pkg 2>/dev/null |grep -q ^ii || return 1
	done
}

if [ "$IS_TMP_1777" = 1 ]; then
    ls -ld /tmp | grep -q drwxrwxrwt || echo 'IS_TMP_1777 FAILED!'
fi

if [ "$IS_ROOT_0700" = 1 ]; then
    ls -ld /root | grep -q drwx------ || echo 'IS_ROOT_0700 FAILED!'
fi

if [ "$IS_VARTMPFS" = 1 ]; then
    df /var/tmp | grep -q tmpfs || echo 'IS_VARTMPFS FAILED!'
fi

if [ "$IS_USRSHARESCRIPTS" = 1 ]; then
    ls -ld /usr/share/scripts | grep -q drwx------ || echo 'IS_USRSHARESCRIPTS FAILED!'
fi

if [ "$IS_SERVEURBASE" = 1 ]; then
    is_installed serveur-base || echo 'IS_SERVEURBASE FAILED!'
fi

if [ "$IS_LOGROTATECONF" = 1 ]; then
    test -e /etc/logrotate.d/zsyslog || echo 'IS_LOGROTATECONF FAILED!'
fi

if [ "$IS_SYSLOGCONF" = 1 ]; then
    grep -q "^# Syslog for Pack Evolix serveur" /etc/*syslog.conf || echo 'IS_SYSLOGCONF FAILED!'
fi

if [ "$IS_DEBIANSECURITY" = 1 ]; then
    grep -q "^deb.*security" /etc/apt/sources.list || echo 'IS_DEBIANSECURITY FAILED!'
fi

if [ "$IS_APTITUDEONLY" = 1 ]; then
    test -e /usr/bin/apt-get && echo 'IS_APTITUDEONLY FAILED!'
fi

if [ "$IS_USRRO" = 1 ]; then
    grep /usr /etc/fstab | grep -q ro || echo 'IS_USRRO FAILED!'
fi

if [ "$IS_TMPNOEXEC" = 1 ]; then
    mount | grep "on /tmp" | grep -q noexec || echo 'IS_TMPNOEXEC FAILED!'
fi

if [ "$IS_LISTCHANGESCONF" = 1 ]; then
    egrep "(which=both|confirm=1)" /etc/apt/listchanges.conf | wc -l | grep -q ^2$ || echo 'IS_LISTCHANGESCONF FAILED!'
fi

if [ "$IS_DPKGWARNING" = 1 ] && ( [ "$IS_USRRO" = 1 ] || [ "$IS_TMPNOEXEC" = 1 ] ); then
    egrep -i "(Pre-Invoke ..echo Are you sure to have rw on|Post-Invoke ..echo Dont forget to mount -o remount)" /etc/apt/apt.conf | wc -l | grep -q ^2$ || echo 'IS_DPKGWARNING FAILED!'
fi

if [ "$IS_CUSTOMCRONTAB" = 1 ]; then
    egrep "^(17 \*|25 6|47 6|52 6)" /etc/crontab | wc -l | grep -q ^4$ && echo 'IS_CUSTOMCRONTAB FAILED!'
fi

if [ "$IS_CUSTOMSUDOERS" = 1 ]; then
    egrep -q "env_reset,.*umask=0077" /etc/sudoers || echo 'IS_CUSTOMSUDOERS FAILED!'
fi

if [ "$IS_SSHPERMITROOTNO" = 1 ]; then
    egrep -qi "PermitRoot.*no" /etc/ssh/sshd_config || echo 'IS_SSHPERMITROOTNO FAILED!'
fi

if [ "$IS_SSHALLOWUSERS" = 1 ]; then
    egrep -qi "AllowUsers" /etc/ssh/sshd_config || echo 'IS_SSHALLOWUSERS FAILED!'
fi

if [ "$IS_DISKPERF" = 1 ]; then
    test -e /root/disk-perf.txt || echo 'IS_DISKPERF FAILED!'
fi

if [ "$IS_TMOUTPROFILE" = 1 ]; then
    grep -q TMOUT= /etc/profile || echo 'IS_TMOUTPROFILE FAILED!'
fi

if [ "$IS_ALERT5BOOT" = 1 ]; then
    grep -q ^date /etc/rc2.d/S*alert5 || echo 'IS_ALERT5BOOT FAILED!'
fi

if [ "$IS_ALERT5MINIFW" = 1 ]; then
    grep -q ^/etc/init.d/minifirewall /etc/rc2.d/S*alert5 || echo 'IS_ALERT5MINIFW FAILED!'
fi

if [ "$IS_NRPEPERMS" = 1 ]; then
    ls -ld /etc/nagios | grep -q drwxr-x--- || echo 'IS_NRPEPERMS FAILED!'
fi

if [ "$IS_MINIFWPERMS" = 1 ]; then
    ls -l /etc/firewall.rc | grep -q -- -rw------- || echo 'IS_MINIFWPERMS FAILED!'
fi

if [ "$IS_NRPEDISKS" = 1 ]; then
    NRPEDISKS=$(grep command.check_disk /etc/nagios/nrpe.cfg | grep ^command.check_disk[0-9] | sed -e "s/^command.check_disk\([0-9]\+\).*/\1/" | sort -n | tail -1)
    DFDISKS=$(df -Pl | egrep -v "(^Filesystem|/lib/init/rw|/dev/shm|udev|rpc_pipefs)" | wc -l)
    [ "$NRPEDISKS" = "$DFDISKS" ] || echo 'IS_NRPEDISKS FAILED!'
fi

# Verification du check_mailq dans nrpe.cfg (celui-ci doit avoir l'option "-M postfix" si le MTA est Postfix)

if [ "$IS_NRPEPOSTFIX" = 1 ]; then
    is_installed postfix && ( grep -q "^command.*check_mailq -M postfix" /etc/nagios/nrpe.cfg || echo 'IS_NRPEPOSTFIX FAILED!' )
fi

if [ "$IS_GRSECPROCS" = 1 ]; then
    uname -a | grep -q grsec && ( grep -q ^command.check_total_procs..sudo /etc/nagios/nrpe.cfg && grep -A1 "^\[processes\]" /etc/munin/plugin-conf.d/munin-node | grep -q "^user root" || echo 'IS_GRSECPROCS FAILED!' )
fi

if [ "$IS_UMASKSUDOERS" = 1 ]; then
    grep -q ^Defaults.*umask=0077 /etc/sudoers || echo 'IS_UMASKSUDOERS FAILED!'
fi

if [ "$IS_EVOMAINTENANCEUSERS" = 1 ]; then
    for i in $(grep "^User_Alias ADMIN" /etc/sudoers | cut -d= -f2 | tr -d " " | tr "," "\n"); do
        grep -q "^trap.*sudo.*evomaintenance.sh" /home/$i/.*profile || echo 'IS_EVOMAINTENANCEUSERS FAILED!'
    done
fi

if [ "$IS_APACHEMUNIN" = 1 ]; then
    test -e /etc/apache2/apache2.conf && ( egrep -q "^env.url.*/server-status-[0-9]{4}" /etc/munin/plugin-conf.d/munin-node && egrep -q "/server-status-[0-9]{4}" /etc/apache2/apache2.conf || egrep -q "/server-status-[0-9]{4}" /etc/apache2/apache2.conf /etc/apache2/mods-enabled/status.conf 2>/dev/null || echo 'IS_APACHEMUNIN FAILED!' )
fi

# Verification mytop + Munin si MySQL
if [ "$IS_MYSQLUTILS" = 1 ]; then
    is_installed mysql-server && ( grep -q mysqladmin /root/.my.cnf && is_installed mytop && grep -q debian-sys-maint /root/.mytop || echo 'IS_MYSQLUTILS FAILED!' )
fi

# Verification de la configuration du raid soft (mdadm)
if [ "$IS_RAIDSOFT" = 1 ]; then
	test -e /proc/mdstat && grep -q md /proc/mdstat && \
	 ( grep -q "^AUTOCHECK=true" /etc/default/mdadm \
	&& grep -q "^START_DAEMON=true" /etc/default/mdadm \
	&& grep -qv "^MAILADDR ___MAIL___" /etc/mdadm/mdadm.conf || echo 'IS_RAIDSOFT FAILED!')
fi

# Verification du LogFormat de AWStats
if [ "$IS_AWSTATSLOGFORMAT" = 1 ]; then
	is_installed apache2.2-common && ( grep -qE '^LogFormat=1' /etc/awstats/awstats.conf.local || echo 'IS_AWSTATSLOGFORMAT FAILED!' )
fi

# Verification de la présence de la config logrotate pour Munin
if [ "$IS_MUNINLOGROTATE" = 1 ]; then
	( test -e /etc/logrotate.d/munin-node && test -e /etc/logrotate.d/munin ) || echo 'IS_MUNINLOGROTATE FAILED!'
fi

# Verification de la configuration d'evomaintenance
if [ "$IS_EVOMAINTENANCECONF" = 1 ]; then
	f=/etc/evomaintenance.cf
	 ( 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" ) || echo 'IS_EVOMAINTENANCECONF FAILED!'
fi

# Verification de la présence de metche
if [ "$IS_METCHE" = 1 ]; then
	is_installed metche || echo 'IS_METCHE FAILED!'
fi

# Verification de l'activation de Squid dans le cas d'un pack mail
if [ "$IS_SQUID" = 1 ]; then
	f=/etc/firewall.rc
	is_pack_web && ( is_installed squid \
	&& grep -qE "^[^#]*iptables -t nat -A OUTPUT -p tcp --dport 80 -m owner --uid-owner proxy -j ACCEPT" $f \
	&& grep -qE "^[^#]*iptables -t nat -A OUTPUT -p tcp --dport 80 -d `hostname -i` -j ACCEPT" $f \
	&& grep -qE "^[^#]*iptables -t nat -A OUTPUT -p tcp --dport 80 -d 127.0.0.1 -j ACCEPT" $f \
	&& grep -qE "^[^#]*iptables -t nat -A OUTPUT -p tcp --dport 80 -j REDIRECT --to-port `grep http_port /etc/squid/squid.conf |cut -f 2 -d " "`" $f || echo 'IS_SQUID FAILED!' )
fi

# Verification de la conf et de l'activation de mod-deflate
if [ "$IS_MODDEFLATE" = 1 ]; then
	f=/etc/apache2/mods-enabled/deflate.conf
	test -e $f && grep -q "AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css application/javascript$" $f || echo 'IS_MODDEFLATE FAILED!'
fi

# Verification de la conf log2mail
if [ "$IS_LOG2MAILAPACHE" = 1 ]; then
	is_pack_web && ( is_installed log2mail && grep -q "^file = /var/log/apache2/error.log" /etc/log2mail/config/default 2>/dev/null || echo 'IS_LOG2MAILAPACHE FAILED!' )
fi
if [ "$IS_LOG2MAILMYSQL" = 1 ]; then
	is_pack_web && ( is_installed log2mail && grep -q "^file = /var/log/syslog" /etc/log2mail/config/default 2>/dev/null || echo 'IS_LOG2MAILMYSQL FAILED!' )
fi
if [ "$IS_LOG2MAILSQUID" = 1 ]; then
	is_pack_web && ( is_installed log2mail && grep -q "^file = /var/log/squid/access.log" /etc/log2mail/config/default 2>/dev/null || echo 'IS_LOG2MAILSQUID FAILED!' )
fi

# Verification si bind est chroote
if [ "$IS_BINDCHROOT" = 1 ]; then
	is_installed bind && ( grep -qE '^OPTIONS=".*-t"' /etc/default/bind9 && grep -qE '^OPTIONS=".*-u"' /etc/default/bind9 || echo 'IS_BINDCHROOT FAILED!' )
fi

# Verification de la présence du depot volatile
if [ "$IS_REPVOLATILE" = 1 ]; then
	test `cat /etc/debian_version |cut -d "." -f 1` -eq 5 && (grep -qE "^deb http://volatile.debian.org/debian-volatile" /etc/apt/sources.list || echo 'IS_REPVOLATILE FAILED!')
	test `cat /etc/debian_version |cut -d "." -f 1` -eq 6 && (grep -qE "^deb.*squeeze-updates" /etc/apt/sources.list || echo 'IS_REPVOLATILE FAILED!')
fi

# Verification interface en auto
if [ "$IS_AUTOIF" = 1 ]; then
	for interface in `/sbin/ifconfig -s |tail -n +2 |grep -v "^lo" |cut -d " " -f 1 |tr "\n" " "`; do
		grep -q "^auto $interface" /etc/network/interfaces || (echo 'IS_AUTOIF FAILED!' && break)
	done
fi

# Verification du nombre de debian-sys-maint
if [ "$IS_TOOMUCHDEBIANSYSMAINT" = 1 ]; then
	is_installed mysql-server && (test `echo "SELECT user FROM mysql.user WHERE user='debian-sys-maint';" |mysql --skip-column-names |wc -l` -eq 1 || echo 'IS_TOOMUCHDEBIANSYSMAINT FAILED!')
fi

# Verification de la mise en place d'evobackup
if [ "$IS_EVOBACKUP" = 1 ]; then
	ls /etc/cron* |grep -q "zz.backup$" || echo 'IS_EVOBACKUP FAILED!'
fi

# Verification de la presence du userlogrotate
if [ "$IS_USERLOGROTATE" = 1 ]; then
	is_pack_web && (test -x /etc/cron.weekly/userlogrotate || echo 'IS_USERLOGROTATE FAILED!')
fi

# Verification de la présence de mod_security
if [ "$IS_MODSECURITY" = 1 ]; then
	is_pack_web && (is_installed libapache-mod-security && test -e /etc/apache2/conf.d/mod-security2.conf || echo 'IS_MODSECURITY FAILED!')
fi

# Verification de la syntaxe de la conf d'Apache
if [ "$IS_APACHECTL" = 1 ]; then
	is_installed apache2.2-common && (/usr/sbin/apache2ctl configtest 2>&1 |grep -q "^Syntax OK$" || echo 'IS_APACHECTL FAILED!')
fi

# Verification de la priorité du package samba si les backports sont utilisés
if [ "$IS_SAMBAPINPRIORITY" = 1 ]; then
	is_pack_samba && grep -qrE "^[^#].*backport" /etc/apt/sources.list{,.d} && ( priority=`grep -E -A2 "^Package:.*samba" /etc/apt/preferences |grep -A1 "^Pin: release a=lenny-backports" |grep "^Pin-Priority:" |cut -f2 -d" "` && test $priority -gt 500 || echo 'IS_SAMBAPINPRIORITY FAILED!' )
fi