S3: Bucket Policy

{
  "Version": "2012-10-17",
  "Statement": [{
    "Effect": "Allow",
    "Principal": {"AWS": [
      "arn:aws:iam:::user/<username>",
      "arn:aws:iam:::user:<username>",
      "arn:aws:iam:::<username>"
    ]},
    "Action": "s3:*",
    "Resource": [
      "arn:aws:s3:::<bucket-name>"
      "arn:aws:s3:::<bucket-name>/*"
    ]
  }]
}

{
  "Version": "2012-10-17",
  "Statement": [{
    "Effect": "Allow",
    "Principal": {"AWS": [
      "arn:aws:iam:::<username>",
    ]},
    "Action": [
      "s3:ListBucket",
      "s3:GetObject"
    ],
    "Resource": [
      "arn:aws:s3:::<bucket-name>"
    ]
  }]
}

{
  "Version": "2012-10-17",
  "Statement": [{
    "Effect": "Allow",
    "Principal": {"AWS": [
      "arn:aws:iam:::user/<username>",
      "arn:aws:iam:::<username>:<sub-username>",
    ]},
    "Action": [
      "s3:GetBucketLocation",
      "s3:GetLifecycleConfiguration",
      "s3:GetBucketPolicy",
      "s3:GetBucketCORS",
      "s3:GetBucketAcl"
    ],
    "Resource": [
      "arn:aws:s3:::<bucket-name>"
    ]
  }]
}