#!/usr/bin/env bash

# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.

# Remediation:
#
#   https://docs.aws.amazon.com/AmazonECR/latest/userguide/image-scanning.html
#
#   aws ecr put-image-scanning-configuration \
#     --region <value> \
#     --repository-name <value> \
#     --image-scanning-configuration scanOnPush=true

CHECK_ID_extra765="7.65"
CHECK_TITLE_extra765="[extra765] Check if ECR image scan on push is enabled "
CHECK_SCORED_extra765="NOT_SCORED"
CHECK_TYPE_extra765="EXTRA"
CHECK_SEVERITY_extra765="Medium"
CHECK_ALTERNATE_check765="extra765"
CHECK_SERVICENAME_extra765="ecr"
CHECK_RISK_extra765='Amazon ECR image scanning helps in identifying software vulnerabilities in your container images. Amazon ECR uses the Common Vulnerabilities and Exposures (CVEs) database from the open-source Clair project and provides a list of scan findings. '
CHECK_REMEDIATION_extra765='Enable ECR image scanning and review the scan findings for information about the security of the container images that are being deployed.'
CHECK_DOC_extra765='https://docs.aws.amazon.com/AmazonECR/latest/userguide/image-scanning.html'
CHECK_CAF_EPIC_extra765='Infrastructure Security'

extra765(){
  for region in $REGIONS; do
    LIST_ECR_REPOS=$($AWSCLI ecr describe-repositories $PROFILE_OPT --region $region --query "repositories[*].[repositoryName]" --output text 2>&1)
    if [[ $(echo "$LIST_ECR_REPOS" | grep AccessDenied) ]]; then
      textFail "Access Denied Trying to describe ECR repositories"
      continue
    fi
    if [[ ! -z "$LIST_ECR_REPOS" ]]; then
      for repo in $LIST_ECR_REPOS; do
        SCAN_ENABLED=$($AWSCLI ecr describe-repositories $PROFILE_OPT --region $region --query "repositories[?repositoryName==\`$repo\`].[imageScanningConfiguration.scanOnPush]" --output text 2>&1)
        case "$SCAN_ENABLED" in
          "True")
            textPass "$region: ECR repository $repo has scan on push enabled" "$region" "$repo"
            ;;
          "False")
            textFail "$region: ECR repository $repo has scan on push disabled!" "$region" "$repo"
            ;;
          "None")
            textInfo "$region: ECR repository $repo has no scanOnPush status, newer awscli needed" "$region" "$repo"
            ;;
          "*")
            textInfo "$region: ECR repository $repo has unknown scanOnPush status \"$SCAN_ENABLED\"" "$region" "$repo"
            ;;
        esac
      done
    else
      textInfo "$region: No ECR repositories found" "$region"
    fi
  done
}