aws_cloudtrails_s3_accesslogging.sh

#!/usr/bin/env bash
#  vim:ts=4:sts=4:sw=4:et
#
#  Author: Hari Sekhon
#  Date: 2020-01-17 16:24:52 +0000 (Fri, 17 Jan 2020)
#
#  https://github.com/harisekhon/bash-tools
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
#  https://www.linkedin.com/in/harisekhon
#

# Lists Cloud Trails buckets and their Access Logging prefix and target bucket
#
# Output Format:
#
# CloudTrail_S3_Bucket      TargetPrefix    TargetBucket
#
# If access logging isn't configured on the bucket, outputs:
#
# CloudTrail_S3_Bucket      S3_ACCESS_LOGGING_NOT_CONFIGURED

set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x

aws cloudtrail describe-trails --query 'trailList[*].S3BucketName' |
jq -r '.[]' |
while read -r name; do
    printf '%s\t' "$name"
    output="$(aws s3api get-bucket-logging --bucket "$name" |
    jq -r '.LoggingEnabled | [.TargetPrefix, .TargetBucket] | @tsv')"
    if [ -z "$output" ]; then
        echo "S3_ACCESS_LOGGING_NOT_CONFIGURED"
    else
        echo "$output"
    fi
done |
sort |
column -t