Fix #49: Autofix improvement: Ensure journald is configured to compress large log files

bin/hardening/8.7.1_journald_config_compress.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+#
+# harbian-audit for Debian GNU/Linux 9/10/11/12
+#
+
+#
+# 8.7.1 Ensure journald is configured to compress large log files (Scored)
+# Author : Samson wen, Samson <samson@hardenedlinux.org>
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+HARDENING_LEVEL=3
+
+CONFFILE='/etc/systemd/journald.conf'
+OPTION='Compress'
+OPTION_VAL='yes'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+	check_param_pair_by_str $CONFFILE $OPTION $OPTION_VAL 
+	if [ $FNRET = 0 ]; then
+		ok "$OPTION set is $OPTION_VAL in $CONFFILE."
+	elif [ $FNRET = 1 ]; then
+		crit "$CONFFILE is not found!"
+	elif [ $FNRET = 2 ]; then
+		crit "$OPTION set is not $OPTION_VAL in $CONFFILE!"
+	elif [ $FNRET = 3 ]; then
+		crit  "$OPTION is not present in $CONFFILE!"
+	fi
+}
+
+apply () {
+	if [ $FNRET = 0 ]; then
+		ok "$OPTION set is $OPTION_VAL in $CONFFILE."
+	elif [ $FNRET = 1 ]; then
+		crit "$CONFFILE is not found, please check!"
+	elif [ $FNRET = 2 ]; then
+		warn "$OPTION set is not $OPTION_VAL in $CONFFILE, reset to $OPTION_VAL"
+		reset_option_str_to_journald $CONFFILE $OPTION $OPTION_VAL
+	elif [ $FNRET = 3 ]; then
+		warn  "$OPTION is not present in $CONFFILE, add to $CONFFILE"
+		add_end_of_file $CONFFILE "${OPTION}=${OPTION_VAL}"
+	fi
+}
+
+# This function will check config parameters required
+check_config() {
+	:
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    . /etc/default/cis-hardening
+fi
+if [ -z "$CIS_ROOT_DIR" ]; then
+     echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
+     echo "Cannot source CIS_ROOT_DIR variable, aborting."
+    exit 128
+fi
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
+    . $CIS_ROOT_DIR/lib/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
+    exit 128
+fi

lib/utils.sh

@@ -780,6 +780,54 @@ verify_integrity_all_packages()
 	fi
 }
 
+# Check paramer with str
+# example: Storage=persistent
+# return: 0 1 2 3 
+check_param_pair_by_str ()
+{
+	FILENAME=$1
+	OPTION=$2
+	EXPECT_OPSTR=$3
+
+    #Example:
+    # FILENAME="/etc/systemd/journald.conf"
+    # OPTION="Storage"
+	# EXPECT_OPSTR="persistent"
+
+	if [ ! -f $FILENAME ]; then
+		debug "$FILENAME file is not exist!"
+		FNRET=1
+	else
+		if [ $(sed -e '/^#/d' -e '/^[ \t][ \t]*#/d' -e 's/#.*$//' -e '/^$/d' $FILENAME | grep "$OPTION=" | wc -l) -gt 0 ]; then
+			debug "$OPTION is exist in $FILENAME."
+			OP_STR=$(sed -e '/^#/d' -e '/^[ \t][ \t]*#/d' -e 's/#.*$//' -e '/^$/d' $FILENAME | grep $OPTION | awk -F'=' '{print $2}')
+			if [ $OP_STR == $EXPECT_OPSTR ]; then
+				debug "The str value is eq to expect str."
+				FNRET=0
+			else
+				debug "The str value is not eq to expect str."
+				FNRET=2
+			fi
+		else
+			debug "The options $OPTION is not exist in $FILENAME"
+			FNRET=3
+		fi
+	fi
+}
+
+reset_option_str_to_journald ()
+{
+	FILENAME=$1
+	OPTION=$2
+	SET_OPSTR=$3
+
+    #Example:
+    # FILENAME="/etc/systemd/journald.conf"
+    # OPTION="Storage"
+	# SET_OPSTR="persistent"
+    sed -i "s/${OPTION}=.*/${OPTION}=${SET_OPSTR}/" $FILENAME
+}
+
 # Check paramer with value 
 # example : minlen = 9
 # ruturn: 0  1  2  3