Make the period of each periodic security script configurable.

There are now six additional variables
  weekly_status_security_enable
  weekly_status_security_inline
  weekly_status_security_output
  monthly_status_security_enable
  monthly_status_security_inline
  monthly_status_security_output
alongside their existing daily counterparts.  They all have the same
default values.

All other "daily_status_security_${scriptname}_${whatever}"
variables have been renamed to "security_status_${name}_${whatever}".
A compatibility shim has been introduced for the old variable names,
which we will be able to remove in 11.0-RELEASE.

"security_status_${name}_enable" is still a boolean but a new
"security_status_${name}_period" allows to define the period of
each script.  The value is one of "daily" (the default for backward
compatibility), "weekly", "monthly" and "NO".

Note that when the security periodic scripts are run directly from
crontab(5) (as opposed to being called by daily or weekly periodic
scripts), they will run unless the test is explicitely disabled with a
"NO", either for in the "_enable" or the "_period" variable.

When the security output is not inlined, the mail subject has been
changed from "$host $arg run output" to "$host $arg $period run output".
For instance:
  myfbsd security run output ->  myfbsd security daily run output
I don't think this is considered as a stable API, but feel free to
correct me if I'm wrong.

Finally, I will rearrange periodic.conf(5) and default/periodic.conf
to put the security options in their own section.  I left them in
place for this commit to make reviewing easier.

Reviewed by:	hackers@

16 files changed, 115 insertions, 84 deletions

diff --git a/etc/periodic/security/100.chksetuid b/etc/periodic/security/100.chksetuid
index 5b93b20..95920a6 100755
--- a/etc/periodic/security/100.chksetuid
+++ b/etc/periodic/security/100.chksetuid
@@ -37,10 +37,12 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_chksetuid_enable
+
 rc=0
 
-case "$daily_status_security_chksetuid_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_chksetuid_enable
+then
 	echo ""
 	echo 'Checking setuid files and devices:'
 	MP=`mount -t ufs,zfs | awk '$0 !~ /no(suid|exec)/ { print $3 }'`
@@ -49,10 +51,6 @@ case "$daily_status_security_chksetuid_enable" in
 	    \( -perm -u+s -or -perm -g+s \) -exec ls -liTd \{\} \+ |
 	check_diff setuid - "${host} setuid diffs:"
 	rc=$?
-	;;
-    *)
-	rc=0
-	;;
-esac
+fi
 
 exit $rc
diff --git a/etc/periodic/security/110.neggrpperm b/etc/periodic/security/110.neggrpperm
index 68d1e7b..1d545ac 100755
--- a/etc/periodic/security/110.neggrpperm
+++ b/etc/periodic/security/110.neggrpperm
@@ -35,10 +35,12 @@ then
     source_periodic_confs
 fi
 
+security_daily_compat_var security_status_neggrpperm_enable
+
 rc=0
 
-case "$daily_status_security_neggrpperm_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_neggrpperm_enable
+then
 	echo ""
 	echo 'Checking negative group permissions:'
 	MP=`mount -t ufs,zfs | awk '$0 !~ /no(suid|exec)/ { print $3 }'`
@@ -48,7 +50,6 @@ case "$daily_status_security_neggrpperm_enable" in
 	    \( ! -perm +040 -and -perm +004 \) \) \
 	    -exec ls -liTd \{\} \+ | tee /dev/stderr | wc -l)
 	[ $n -gt 0 ] && rc=1 || rc=0
-	;;
-esac
+fi
 
 exit $rc
diff --git a/etc/periodic/security/200.chkmounts b/etc/periodic/security/200.chkmounts
index 17b114e..7b14866 100755
--- a/etc/periodic/security/200.chkmounts
+++ b/etc/periodic/security/200.chkmounts
@@ -40,12 +40,16 @@ fi
 
 . /etc/periodic/security/security.functions
 
-ignore="${daily_status_security_chkmounts_ignore}"
+security_daily_compat_var security_status_chkmounts_enable
+security_daily_compat_var security_status_chkmounts_ignore
+security_daily_compat_var security_status_noamd
+
+ignore="${security_status_chkmounts_ignore}"
 rc=0
 
-case "$daily_status_security_chkmounts_enable" in
-    [Yy][Ee][Ss])
-	case "$daily_status_security_noamd" in
+if check_yesno_period security_status_chkmounts_enable
+then
+	case "$security_status_noamd" in
 	    [Yy][Ee][Ss])
 		ignore="${ignore}|^amd:"
 	esac
@@ -55,8 +59,7 @@ case "$daily_status_security_chkmounts_enable" in
 	fi
 	mount -p | sort | ${cmd} |
 	  check_diff mount - "${host} changes in mounted filesystems:"
-	rc=$?;;
-    *)	rc=0;;
-esac
+	rc=$?
+fi
 
 exit "$rc"
diff --git a/etc/periodic/security/300.chkuid0 b/etc/periodic/security/300.chkuid0
index 32cc16c..73578e2 100755
--- a/etc/periodic/security/300.chkuid0
+++ b/etc/periodic/security/300.chkuid0
@@ -36,16 +36,19 @@ then
     source_periodic_confs
 fi
 
-case "$daily_status_security_chkuid0_enable" in
-    [Yy][Ee][Ss])
+security_daily_compat_var security_status_chkuid0_enable
+
+rc=0
+
+if check_yesno_period security_status_chkuid0_enable
+then
 	echo ""
 	echo 'Checking for uids of 0:'
 	n=$(awk -F: '/^#/ {next} $3==0 {print $1,$3}' /etc/master.passwd |
 	tee /dev/stderr |
 	sed -e '/^root 0$/d' -e '/^toor 0$/d' |
 	wc -l)
-	[ $n -gt 0 ] && rc=1 || rc=0;;
-    *)	rc=0;;
-esac
+	[ $n -gt 0 ] && rc=1 || rc=0
+fi
 
 exit "$rc"
diff --git a/etc/periodic/security/400.passwdless b/etc/periodic/security/400.passwdless
index 42ece04..5e851ac 100755
--- a/etc/periodic/security/400.passwdless
+++ b/etc/periodic/security/400.passwdless
@@ -35,14 +35,17 @@ then
     source_periodic_confs
 fi
 
-case "$daily_status_security_passwdless_enable" in
-    [Yy][Ee][Ss])
+security_daily_compat_var security_status_passwdless_enable
+
+rc=0
+
+if check_yesno_period security_status_passwdless_enable
+then
 	echo ""
 	echo 'Checking for passwordless accounts:'
 	n=$(awk -F: 'NF > 1 && $1 !~ /^[#+-]/ && $2=="" {print $0}' /etc/master.passwd |
 	    tee /dev/stderr | wc -l)
-	[ $n -gt 0 ] && rc=1 || rc=0;;
-    *)	rc=0;;
-esac
+	[ $n -gt 0 ] && rc=1 || rc=0
+fi
 
 exit "$rc"
diff --git a/etc/periodic/security/410.logincheck b/etc/periodic/security/410.logincheck
index f6cf405..41e7f65 100755
--- a/etc/periodic/security/410.logincheck
+++ b/etc/periodic/security/410.logincheck
@@ -35,8 +35,12 @@ then
     source_periodic_confs
 fi
 
-case "$daily_status_security_logincheck_enable" in
-    [Yy][Ee][Ss])
+security_daily_compat_var security_status_logincheck_enable
+
+rc=0
+
+if check_yesno_period security_status_logincheck_enable
+then
 	echo ""
 	echo 'Checking login.conf permissions:'
 	if [ -G /etc/login.conf -a -O /etc/login.conf ]; then
@@ -45,8 +49,7 @@ case "$daily_status_security_logincheck_enable" in
 	    echo "Bad ownership of /etc/login.conf"
 	    n=1
 	fi
-	[ $n -gt 0 ] && rc=1 || rc=0;;
-    *)	rc=0;;
-esac
+	[ $n -gt 0 ] && rc=1 || rc=0
+fi
 
 exit "$rc"
diff --git a/etc/periodic/security/460.chkportsum b/etc/periodic/security/460.chkportsum
index 3a39c84..18a12ec 100755
--- a/etc/periodic/security/460.chkportsum
+++ b/etc/periodic/security/460.chkportsum
@@ -35,13 +35,15 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_chkportsum_enable
+
 rc=0
 
 echo ""
 echo 'Checking for ports with mismatched checksums:'
 
-case "${daily_status_security_chkportsum_enable}" in
-	[Yy][Ee][Ss])
+if check_yesno_period security_status_chkportsum_enable
+then
 	set -f
 	pkg_info -ga 2>/dev/null | \
 	while IFS= read -r line; do
@@ -59,10 +61,6 @@ case "${daily_status_security_chkportsum_enable}" in
 			;;
 		esac
 	done
-	;;
-	*)
-	rc=0
-	;;
-esac
+fi
 
 exit $rc
diff --git a/etc/periodic/security/500.ipfwdenied b/etc/periodic/security/500.ipfwdenied
index 6a6fb8b4..f39ca0e 100755
--- a/etc/periodic/security/500.ipfwdenied
+++ b/etc/periodic/security/500.ipfwdenied
@@ -37,17 +37,18 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_ipfwdenied_enable
+
 rc=0
 
-case "$daily_status_security_ipfwdenied_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_ipfwdenied_enable
+then
 	TMP=`mktemp -t security`
 	if ipfw -a list 2>/dev/null | egrep "deny|reset|unreach" > ${TMP}; then
 	  check_diff new_only ipfw ${TMP} "${host} ipfw denied packets:"
 	fi
 	rc=$?
-	rm -f ${TMP};;
-    *)	rc=0;;
-esac
+	rm -f ${TMP}
+fi
 
 exit $rc
diff --git a/etc/periodic/security/510.ipfdenied b/etc/periodic/security/510.ipfdenied
index 2058d2b..bed75e6 100755
--- a/etc/periodic/security/510.ipfdenied
+++ b/etc/periodic/security/510.ipfdenied
@@ -37,17 +37,18 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_ipfdenied_enable
+
 rc=0
 
-case "$daily_status_security_ipfdenied_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_ipfdenied_enable
+then
 	TMP=`mktemp -t security`
 	if ipfstat -nhio 2>/dev/null | grep block > ${TMP}; then
 	  check_diff new_only ipf ${TMP} "${host} ipf denied packets:"
 	fi
 	rc=$?
-	rm -f ${TMP};;
-    *)	rc=0;;
-esac
+	rm -f ${TMP}
+fi
 
 exit $rc
diff --git a/etc/periodic/security/520.pfdenied b/etc/periodic/security/520.pfdenied
index 5e51393..7a32bf2 100755
--- a/etc/periodic/security/520.pfdenied
+++ b/etc/periodic/security/520.pfdenied
@@ -37,17 +37,18 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_pfdenied_enable
+
 rc=0
 
-case "$daily_status_security_pfdenied_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_pfdenied_enable
+then
 	TMP=`mktemp -t security`
 	if pfctl -sr -v 2>/dev/null | nawk '{if (/^block/) {buf=$0; getline; gsub(" +"," ",$0); print buf$0;} }' > ${TMP}; then
 	  check_diff new_only pf ${TMP} "${host} pf denied packets:"
 	fi
 	rc=$?
-	rm -f ${TMP};;
-    *)	rc=0;;
-esac
+	rm -f ${TMP}
+fi
 
 exit $rc
diff --git a/etc/periodic/security/550.ipfwlimit b/etc/periodic/security/550.ipfwlimit
index daa0f86..86932c6 100755
--- a/etc/periodic/security/550.ipfwlimit
+++ b/etc/periodic/security/550.ipfwlimit
@@ -38,10 +38,12 @@ then
     source_periodic_confs
 fi
 
+security_daily_compat_var security_status_ipfwlimit_enable
+
 rc=0
 
-case "$daily_status_security_ipfwlimit_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_ipfwlimit_enable
+then
 	IPFW_VERBOSE=`sysctl -n net.inet.ip.fw.verbose 2> /dev/null`
 	if [ $? -ne 0 ] || [ "$IPFW_VERBOSE" -eq 0 ]; then
 		exit 0
@@ -61,8 +63,7 @@ case "$daily_status_security_ipfwlimit_enable" in
 		echo 'ipfw log limit reached:'
 		cat ${TMP}
 	fi
-	rm -f ${TMP};;
-    *)	rc=0;;
-esac
+	rm -f ${TMP}
+fi
 
 exit $rc
diff --git a/etc/periodic/security/610.ipf6denied b/etc/periodic/security/610.ipf6denied
index 6c64d92..7e02cfc 100755
--- a/etc/periodic/security/610.ipf6denied
+++ b/etc/periodic/security/610.ipf6denied
@@ -37,17 +37,18 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_ipf6denied_enable
+
 rc=0
 
-case "$daily_status_security_ipf6denied_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_ipf6denied_enable
+then
 	TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
 	if ipfstat -nhio6 2>/dev/null | grep block > ${TMP}; then
 	 check_diff new_only ipf6 ${TMP} "${host} ipf6 denied packets:"
 	fi
 	rc=$?
-	rm -f ${TMP};;
-    *)	rc=0;;
-esac
+	rm -f ${TMP}
+fi
 
 exit $rc
diff --git a/etc/periodic/security/700.kernelmsg b/etc/periodic/security/700.kernelmsg
index fb5ed63..8bf6491 100755
--- a/etc/periodic/security/700.kernelmsg
+++ b/etc/periodic/security/700.kernelmsg
@@ -40,14 +40,15 @@ fi
 
 . /etc/periodic/security/security.functions
 
+security_daily_compat_var security_status_kernelmsg_enable
+
 rc=0
 
-case "$daily_status_security_kernelmsg_enable" in
-    [Yy][Ee][Ss])
+if check_yesno_period security_status_kernelmsg_enable
+then
 	dmesg 2>/dev/null |
 	    check_diff new_only dmesg - "${host} kernel log messages:"
-	rc=$?;;
-    *)	rc=0;;
-esac
+	rc=$?
+fi
 
 exit $rc
diff --git a/etc/periodic/security/800.loginfail b/etc/periodic/security/800.loginfail
index 767b959..a0de96d 100755
--- a/etc/periodic/security/800.loginfail
+++ b/etc/periodic/security/800.loginfail
@@ -38,7 +38,10 @@ then
     source_periodic_confs
 fi
 
-LOG="${daily_status_security_logdir}"
+security_daily_compat_var security_status_logdir
+security_daily_compat_var security_status_loginfail_enable
+
+LOG="${security_status_logdir}"
 
 yesterday=`date -v-1d "+%b %e "`
 
@@ -55,14 +58,15 @@ catmsgs() {
 	[ -f ${LOG}/auth.log ] && cat $LOG/auth.log
 }
 
-case "$daily_status_security_loginfail_enable" in
-    [Yy][Ee][Ss])
+rc=0
+
+if check_yesno_period security_status_loginfail_enable
+then
 	echo ""
 	echo "${host} login failures:"
 	n=$(catmsgs | egrep -ia "^$yesterday.*: .*(fail|invalid|bad|illegal)" |
 	    tee /dev/stderr | wc -l)
-	[ $n -gt 0 ] && rc=1 || rc=0;;
-    *)	rc=0;;
-esac
+	[ $n -gt 0 ] && rc=1 || rc=0
+fi
 
 exit $rc
diff --git a/etc/periodic/security/900.tcpwrap b/etc/periodic/security/900.tcpwrap
index 55f7709..10b02e9 100755
--- a/etc/periodic/security/900.tcpwrap
+++ b/etc/periodic/security/900.tcpwrap
@@ -38,7 +38,10 @@ then
     source_periodic_confs
 fi
 
-LOG="${daily_status_security_logdir}"
+security_daily_compat_var security_status_logdir
+security_daily_compat_var security_status_tcpwrap_enable
+
+LOG="${security_status_logdir}"
 
 yesterday=`date -v-1d "+%b %e "`
 
@@ -55,14 +58,15 @@ catmsgs() {
 	[ -f ${LOG}/messages ] && cat $LOG/messages
 }
 
-case "$daily_status_security_tcpwrap_enable" in
-    [Yy][Ee][Ss])
+rc=0
+
+if check_yesno_period security_status_tcpwrap_enable
+then
 	echo ""
 	echo "${host} refused connections:"
 	n=$(catmsgs | grep -i "^$yesterday.*refused connect" |
 	    tee /dev/stderr | wc -l)
-	[ $n -gt 0 ] && rc=1 || rc=0;;
-    *)	rc=0;;
-esac
+	[ $n -gt 0 ] && rc=1 || rc=0
+fi
 
 exit $rc
diff --git a/etc/periodic/security/security.functions b/etc/periodic/security/security.functions
index f5b8dcd..bc2bcba 100644
--- a/etc/periodic/security/security.functions
+++ b/etc/periodic/security/security.functions
@@ -27,11 +27,19 @@
 # $FreeBSD$
 #
 
+# This is a library file, so we only try to do something when sourced.
+case "$0" in
+*/security.functions) exit 0 ;;
+esac
+
+security_daily_compat_var security_status_logdir
+security_daily_compat_var security_status_diff_flags
+
 #
 # Show differences in the output of an audit command
 #
 
-LOG="${daily_status_security_logdir}"
+LOG="${security_status_logdir}"
 rc=0
 
 # Usage: COMMAND | check_diff [new_only] LABEL - MSG
@@ -67,7 +75,7 @@ check_diff() {
     [ $rc -lt 1 ] && rc=1
     echo ""
     echo "${msg}"
-    diff ${daily_status_security_diff_flags} ${LOG}/${label}.today \
+    diff ${security_status_diff_flags} ${LOG}/${label}.today \
 	${tmpf} | eval "${filter}"
     mv ${LOG}/${label}.today ${LOG}/${label}.yesterday || rc=3
     mv ${tmpf} ${LOG}/${label}.today || rc=3