Add audit and apply methods for 9.3.22

bin/hardening/9.3.22_sshd_MACs.sh

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+#
+# harbian audit 7/8/9  Hardening
+#
+
+#
+# 9.3.21 Set SSHD Compression to no (Scored)
+# Authors : Samson wen, Samson <sccxboy@gmail.com>
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+HARDENING_LEVEL=2
+
+PACKAGE='openssh-server'
+OPTIONS='MACs=hmac-sha2-256,hmac-sha2-512'
+FILE='/etc/ssh/sshd_config'
+
+# This function will be called if the script status is on enabled / audit mode
+audit () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET != 0 ]; then
+        crit "$PACKAGE is not installed!"
+    else
+        ok "$PACKAGE is installed"
+        for SSH_OPTION in $OPTIONS; do
+            SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
+            SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
+            PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
+            does_pattern_exist_in_file $FILE "$PATTERN"
+            if [ $FNRET = 0 ]; then
+                ok "$PATTERN is present in $FILE"
+            else
+                crit "$PATTERN is not present in $FILE"
+            fi
+        done
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    is_pkg_installed $PACKAGE
+    if [ $FNRET = 0 ]; then
+        ok "$PACKAGE is installed"
+    else
+        crit "$PACKAGE is absent, installing it"
+        apt_install $PACKAGE
+    fi
+    for SSH_OPTION in $OPTIONS; do
+            SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
+            SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
+            PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
+            does_pattern_exist_in_file $FILE "$PATTERN"
+            if [ $FNRET = 0 ]; then
+                ok "$PATTERN is present in $FILE"
+            else
+                warn "$PATTERN is not present in $FILE, adding it"
+                does_pattern_exist_in_file $FILE "^$SSH_PARAM"
+                if [ $FNRET != 0 ]; then
+                    add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
+                else
+                    info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
+                    replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
+                fi
+                /etc/init.d/ssh reload > /dev/null 2>&1
+            fi
+    done
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    . /etc/default/cis-hardening
+fi
+if [ -z "$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