#!/usr/bin/env bash

# Prowler - the handy cloud security tool (c) by Toni de la Fuente
#
# This Prowler check is licensed under a
# Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
#
# You should have received a copy of the license along with this
# work. If not, see <http://creativecommons.org/licenses/by-nc-sa/4.0/>.

CHECK_ID_check28="2.8"
CHECK_TITLE_check28="[check28] Ensure rotation for customer created CMKs is enabled (Scored)"
CHECK_SCORED_check28="SCORED"
CHECK_TYPE_check28="LEVEL2"
CHECK_SEVERITY_check28="Medium"
CHECK_ASFF_TYPE_check28="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
CHECK_ASFF_RESOURCE_TYPE_check28="AwsKmsKey"
CHECK_ALTERNATE_check208="check28"

check28(){
  # "Ensure rotation for customer created CMKs is enabled (Scored)"
  for regx in $REGIONS; do
  CHECK_KMS_KEYLIST=$($AWSCLI kms list-keys $PROFILE_OPT --region $regx --output text --query 'Keys[*].KeyId')
    if [[ $CHECK_KMS_KEYLIST ]];then
      CHECK_KMS_KEYLIST_NO_DEFAULT=$(
        for key in $CHECK_KMS_KEYLIST; do
          $AWSCLI kms describe-key --key-id $key $PROFILE_OPT --region $regx --query 'KeyMetadata.{key:KeyId,state:KeyState,man:KeyManager}' --output text|grep Enabled$|grep -v AWS| awk '{ print $1 }'
        done )
      if [[ $CHECK_KMS_KEYLIST_NO_DEFAULT ]]; then
        for key in $CHECK_KMS_KEYLIST_NO_DEFAULT; do
          CHECK_KMS_KEY_TYPE=$($AWSCLI kms describe-key --key-id $key $PROFILE_OPT --region $regx --query 'KeyMetadata.Origin' | sed 's/["]//g')
            if [[ "$CHECK_KMS_KEY_TYPE" == "EXTERNAL" ]];then
              textPass "$regx: Key $key in Region $regx Customer Uploaded Key Material" "$regx"
            else
              CHECK_KMS_KEY_ROTATION=$($AWSCLI kms get-key-rotation-status --key-id $key $PROFILE_OPT --region $regx --output text)
              if [[ "$CHECK_KMS_KEY_ROTATION" == "True" ]];then
                textPass "$regx: Key $key is set correctly" "$regx"
              else
                textFail "$regx: Key $key is not set to rotate!" "$regx"
              fi
            fi
        done
      else
        textInfo "$regx: This region doesn't have CUSTOM encryption keys" "$regx"
      fi
    else
      textInfo "$regx: This region doesn't have ANY encryption keys" "$regx"
    fi
  done
}