daily

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Author : bluhm
Date : 2019-09-09 20:02:26
Hash : dd06cfbc
Message : Inform about system call memory write protection and stack mapping violations in system accounting. This will help to find missbehaving programs and possible attacks. The flags bit field is full, so recycle the PDP-11 compatibility on VAX. lastcomm(1) prints the AMAP flag as 'M'. daily(8) prints a list of affected processes. OK deraadt@
etc/daily
#
#	$OpenBSD: daily,v 1.93 2019/09/09 20:02:26 bluhm Exp $
#	From: @(#)daily	8.2 (Berkeley) 1/25/94
#
# For local additions, create the file /etc/daily.local.
# To get section headers, use the function next_part in daily.local.
#
umask 022

PARTOUT=/var/log/daily.part
MAINOUT=/var/log/daily.out
install -o 0 -g 0 -m 600    /dev/null $PARTOUT
install -o 0 -g 0 -m 600 -b /dev/null $MAINOUT

start_part() {
	TITLE=$1
	exec > $PARTOUT 2>&1
}

end_part() {
	exec >> $MAINOUT 2>&1
	test -s $PARTOUT || return
	echo ""
	echo "$TITLE"
	cat $PARTOUT
}

next_part() {
	end_part
	start_part "$1"
}

run_script() {
	f=/etc/$1
	test -e $f || return
	if [ `stat -f '%Sp%u' $f | cut -b1,6,9,11-` != '---0' ]; then
		echo "$f has insecure permissions, skipping:"
		ls -l $f
		return
	fi
	. $f
}

start_part "Running daily.local:"
run_script "daily.local"

next_part "Removing scratch and junk files:"
if [ -d /tmp -a ! -L /tmp ]; then
	cd /tmp && {
	find -x . \
	    \( -path './ssh-*' -o -path ./.X11-unix -o -path ./.ICE-unix \
		-o -path './tmux-*' \) \
	    -prune -o -type f -atime +7 -execdir rm -f -- {} \; 2>/dev/null
	find -x . -type d -mtime +1 ! -path ./vi.recover ! -path ./.X11-unix \
	    ! -path ./.ICE-unix ! -name . \
	    -execdir rmdir -- {} \; >/dev/null 2>&1; }
fi

# Additional junk directory cleanup would go like this:
#if [ -d /scratch -a ! -L /scratch ]; then
#	cd /scratch && {
#	find . ! -name . -atime +1 -execdir rm -f -- {} \;
#	find . ! -name . -type d -mtime +1 -execdir rmdir -- {} \; \
#	    >/dev/null 2>&1; }
#fi

next_part "Purging accounting records:"
if [ -f /var/account/acct ]; then
	test -f /var/account/acct.2 && \
		mv -f /var/account/acct.2 /var/account/acct.3
	test -f /var/account/acct.1 && \
		mv -f /var/account/acct.1 /var/account/acct.2
	test -f /var/account/acct.0 && \
		mv -f /var/account/acct.0 /var/account/acct.1
	cp -f /var/account/acct /var/account/acct.0
	sa -sq
	lastcomm -f /var/account/acct.0 | grep -e ' -[A-Z]*[MPTU]'
fi

# If ROOTBACKUP is set to 1 in the environment, and
# if filesystem named /altroot is type ffs and mounted "xx",
# use it as a backup root filesystem to be updated daily.
next_part "Backing up root filesystem:"
while [ "X$ROOTBACKUP" = X1 ]; do
	rootbak=`awk '$1 !~ /^#/ && $2 == "/altroot" && $3 == "ffs" && \
		$4 ~ /xx/ { print $1 }' < /etc/fstab`
	if [ -z "$rootbak" ]; then
		echo "No xx ffs /altroot device found in the fstab(5)."
		break
	fi
	rootbak=${rootbak#/dev/}
	bakdisk=${rootbak%%?(.)[a-p]}
	if ! sysctl -n hw.disknames | grep -Fqw $bakdisk; then
		echo "Backup disk '$bakdisk' not present in hw.disknames."
		break
	fi
	bakpart=${rootbak##$bakdisk?(.)}
	OLDIFS=$IFS
	IFS=,
	for d in `sysctl -n hw.disknames`; do
		# If the provided disk name is a duid, substitute the device.
		if [ X$bakdisk = X${d#*:} ]; then
			bakdisk=${d%:*}
			rootbak=$bakdisk$bakpart
		fi
	done
	IFS=$OLDIFS
	baksize=`disklabel $bakdisk 2>/dev/null | \
		awk -v "part=$bakpart:" '$1 == part { print $2 }'`
	rootdev=`mount | awk '$3 == "/" && $1 ~ /^\/dev\// && $5 == "ffs" \
		{ print substr($1, 6) }'`
	if [ -z "$rootdev" ]; then
		echo "The root filesystem is not local or not ffs."
		break
	fi
	if [ X$rootdev = X$rootbak ]; then
		echo "The device $rootdev holds both root and /altroot."
		break
	fi
	rootdisk=${rootdev%[a-p]}
	rootpart=${rootdev#$rootdisk}
	rootsize=`disklabel $rootdisk 2>/dev/null | \
		awk -v "part=$rootpart:" '$1 == part { print $2 }'`
	if [ $rootsize -gt $baksize ]; then
		echo "Root ($rootsize) is larger than /altroot ($baksize)."
		break
	fi
	next_part "Backing up root=/dev/r$rootdev to /dev/r$rootbak:"
	sync
	dd if=/dev/r$rootdev of=/dev/r$rootbak bs=16b seek=1 skip=1 \
		conv=noerror
	fsck -y /dev/r$rootbak
	break
done

next_part "Services that should be running but aren't:"
rcctl ls failed

next_part "Checking subsystem status:"
if [ "X$VERBOSESTATUS" != X0 ]; then
	echo ""
	echo "disks:"
	df -ikl
	echo ""
	dump W
else
	dump w | grep -vB1 ^Dump
fi

next_part "network:"
if [ "X$VERBOSESTATUS" != X0 ]; then
	netstat -ivn
fi

next_part "Running calendar in the background:"
if [ "X$CALENDAR" != X0 -a \
     \( -d /var/yp/`domainname` -o ! -d /var/yp/binding \) ]; then
	calendar -a &
fi

# If CHECKFILESYSTEMS is set to 1 in the environment, run fsck
# with the no-write flag.
next_part "Checking filesystems:"
[ "X$CHECKFILESYSTEMS" = X1 ] && {
	fsck -n | grep -v '^\*\* Phase'
}

next_part "Running rdist:"
if [ -f /etc/Distfile ]; then
	if [ -d /var/log/rdist ]; then
		rdist -f /etc/Distfile 2>&1 | tee /var/log/rdist/`date +%F`
	else
		rdist -f /etc/Distfile
	fi
fi

end_part
[ -s $MAINOUT ] && {
	sysctl -n kern.version
	uptime
	cat $MAINOUT
} 2>&1 | mail -s "`hostname` daily output" root


MAINOUT=/var/log/security.out
install -o 0 -g 0 -m 600 -b /dev/null $MAINOUT

start_part "Running security(8):"
export SUIDSKIP
/usr/libexec/security
end_part
rm -f $PARTOUT

[ -s $MAINOUT ] && mail -s "`hostname` daily insecurity output" root < $MAINOUT
IABSD.fr/src/etc/daily

Commit

IABSD.fr/src /etc/daily
