Add audit and apply methods for unlock_time parameter with pam_tally2

bin/hardening/9.2.16_enable_lockout_failed_password.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+
+#
+# harbian audit 7/8/9  Hardening
+#
+
+#
+# 9.2.11 Set Lockout for Failed Password Attempts (Scored)
+# for login and ssh service
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+HARDENING_LEVEL=3
+
+PACKAGE='libpam-modules-bin'
+PAMLIBNAME='pam_tally2.so'
+AUTHPATTERN='^auth[[:space:]]*required[[:space:]]*pam_tally2.so'
+AUTHFILE='/etc/pam.d/common-auth'
+AUTHRULE='auth required pam_tally2.so deny=3 even_deny_root unlock_time=900'
+ADDPATTERNLINE='# pam-auth-update(8) for details.'
+UNLOCKOPTION='unlock_time'
+UNLOCK_VAL=900
+
+# 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!"
+        FNRET=1
+    else
+        ok "$PACKAGE is installed"
+        does_pattern_exist_in_file $AUTHFILE $AUTHPATTERN
+        if [ $FNRET = 0 ]; then
+                ok "$AUTHPATTERN is present in $AUTHFILE."
+                check_param_pair_by_pam $AUTHFILE $PAMLIBNAME $UNLOCKOPTION ge $UNLOCK_VAL
+                if [ $FNRET = 0 ]; then
+                    ok "$UNLOCKOPTION set condition is $UNLOCK_VAL"
+                else
+                    crit "$UNLOCKOPTION set condition is not $UNLOCK_VAL"
+                fi
+        else
+            crit "$AUTHPATTERN is not present in $AUTHFILE"
+            FNRET=2
+        fi
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply () {
+    if [ $FNRET = 0 ]; then
+        ok "$PACKAGE is installed"
+    elif [ $FNRET = 1 ]; then
+        warn "Apply:$PACKAGE is absent, installing it"
+        apt_install $PACKAGE
+    elif [ $FNRET = 2 ]; then
+        warn "Apply:$AUTHPATTERN is not present in $AUTHFILE"
+        add_line_file_after_pattern "$AUTHFILE" "$AUTHRULE" "$ADDPATTERNLINE"
+    elif [ $FNRET = 3 ]; then
+        crit "$AUTHFILE is not exist, please check"
+    elif [ $FNRET = 4 ]; then
+        warn "Apply:$UNLOCKOPTION is not conf"   
+        add_option_to_auth_check $AUTHFILE $PAMLIBNAME "$UNLOCKOPTION=$UNLOCK_VAL"
+    elif [ $FNRET = 5 ]; then                                                
+        warn "Apply:$UNLOCKOPTION set is not match legally, reset it to $UNLOCK_VAL"
+        reset_option_to_auth_check $AUTHFILE $PAMLIBNAME "$UNLOCKOPTION" "$UNLOCK_VAL"
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    . /etc/default/cis-hardening
+fi
+if [ -z "$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