From 0d3020a5def0e406d679b39517cbcf9fb9aa1cde Mon Sep 17 00:00:00 2001
From: Samson-W <sccxboy@gmail.com>
Date: Mon, 10 Sep 2018 04:27:07 +0800
Subject: [PATCH] Add audit and apply methods for password option dcredit.

---
 .../9.2.3_enable_dcredit_cracklib.sh          | 94 +++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100755 bin/hardening/9.2.3_enable_dcredit_cracklib.sh

diff --git a/bin/hardening/9.2.3_enable_dcredit_cracklib.sh b/bin/hardening/9.2.3_enable_dcredit_cracklib.sh
new file mode 100755
index 0000000..094ad6d
--- /dev/null
+++ b/bin/hardening/9.2.3_enable_dcredit_cracklib.sh
@@ -0,0 +1,94 @@
+#!/bin/bash
+
+#
+# harbian audit 9  Hardening
+#
+
+#
+# 9.2.1 Set Password Creation Requirement Parameters Using pam_cracklib: audit dcredit option (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='libpam-cracklib'
+PAMLIBNAME='pam_cracklib.so'
+PATTERN='^password.*pam_cracklib.so'
+FILE='/etc/pam.d/common-password'
+
+OPTIONNAME='dcredit'
+
+# condition 
+CONDT_VAL=-1
+
+# 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 $FILE $PATTERN
+        if [ $FNRET = 0 ]; then
+            ok "$PATTERN is present in $FILE"
+            check_password_by_pam $OPTIONNAME le $CONDT_VAL  
+            if [ $FNRET = 0 ]; then
+                ok "$OPTIONNAME set condition is $CONDT_VAL"
+            else
+                crit "$OPTIONNAME set condition is $CONDT_VAL"
+                #FNRET=3
+            fi
+        else
+            crit "$PATTERN is not present in $FILE"
+            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 [ $FNRET = 1 ]; then
+        crit "$PACKAGE is absent, installing it"
+        apt_install $PACKAGE
+    elif [ $FNRET = 2 ]; then
+        crit "$PATTERN is not present in $FILE, add default config to $FILE"
+        add_line_file_before_pattern $FILE "password    requisite           pam_cracklib.so retry=3 minlen=8 difok=3" "# pam-auth-update(8) for details."
+    elif [ $FNRET = 3 ]; then
+        crit "$FILE is not exist, please check"
+    elif [ $FNRET = 4 ]; then
+        crit "$OPTIONNAME is not conf"
+        add_option_to_password_check $FILE $PAMLIBNAME "$OPTIONNAME=$CONDT_VAL"
+    elif [ $FNRET = 5 ]; then
+        crit "$OPTIONNAME set is not match legally, reset it to $CONDT_VAL"
+        reset_option_to_password_check $FILE $PAMLIBNAME "$OPTIONNAME" "$CONDT_VAL"
+    fi 
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    . /etc/default/cis-hardening
+fi
+if [ -z "$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