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Presigned S3 URLs Generator

presigned_url_gen.py generates pre-signed URLs for S3 GET and PUT HTTP request access.

Dependencies

  • Python 2.7+ or Python 3+
  • boto3
  • argparse

Pre-requisites

  1. Install the dependencies.

    pip install boto3 argparse

  2. You will need an AWS Account with S3 access before beginning. You must install and configure the AWS CLI in order to use this script.
    For information on AWS S3 please see: https://docs.aws.amazon.com/AmazonS3/latest/dev/Welcome.html
    For AWS CLI installation information please see: https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-install.html
    For AWS CLI configuration information please see: https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html

    aws configure

Usage

  1. Run the presigned_url_gen.py with your s3 bucket-name and s3 object key object-key. 
    python presigned_urls_gen.py --bucket my-bucket --key object-key
    An example expected output: 
    #define IOT_DEMO_HTTPS_PRESIGNED_GET_URL    https://my-bucket.s3.amazonaws.com/object-key.txt?AWSAccessKeyId=AAAAAAAAAAAAAAAAAAAA&Expires=1560555644&Signature=SomeHash12345UrlABcdEFgfIjK%3D  
#define IOT_DEMO_HTTPS_PRESIGNED_PUT_URL    https://my-bucket.s3.amazonaws.com/object-key.txt?AWSAccessKeyId=ABABABABABABABABABAB&Expires=1560555644&Signature=SomeHash12345UrlLMnmOPqrStUvW%3D
  2. Copy and paste the output to iot_config.h for macro IOT_DEMO_HTTPS_PRESIGNED_GET_URL and IOT_DEMO_HTTPS_PRESIGNED_PUT_URL. 
    #define IOT_DEMO_HTTPS_PRESIGNED_PUT_URL     https://my-bucket.s3.amazonaws.com/object-key.txt?AWSAccessKeyId=AAAAAAAAAAAAAAAAAAAA&Expires=1560555644&Signature=SomeHash12345UrlABcdEFgfIjK%3D
#define IOT_DEMO_HTTPS_PRESIGNED_GET_URL     https://my-bucket.s3.amazonaws.com/object-key.txt?AWSAccessKeyId=AAAAAAAAAAAAAAAAAAAA&Expires=1560555644&Signature=SomeHash12345UrlABcdEFgfIjK%3D

Parameter Info

--bucket

The name of your S3 bucket where you will download or upload.

--key

The name of the existing object you wish to download (GET).  
Or the name of the object you wish to upload (PUT).