prakash951 / Python-AWS-S3PreSignedURL

This Python script helps create a pre-signed S3 URL for an object stored in S3.

Create a S3 pre-Signed URL

Prerequisites

1. Create an AWS account. Learn more about AWS here http://aws.amazon.com/getting-started/

2. Create an IAM user with the required permissions to perform S3 related operations. Learn more here --> http://docs.aws.amazon.com/IAM/latest/UserGuide/GSGHowToCreateAdminsGroup.html
   Note: It is advisable to assign least privileges to users.

3. Create an Access Key and Secret Key for your user. It is required in Step 7. Learn more here http://docs.aws.amazon.com/IAM/latest/UserGuide/ManagingCredentials.html#Using_CreateAccessKey

4. Make sure you have installed Python https://www.python.org/downloads/ . This code assumes that you will be installing version 2.x

5. Install Pip from https://pip.pypa.io/en/latest/. Pip is required to to install boto. Start by downloading pip from https://bootstrap.pypa.io/get-pip.py and then install it using the command python get-pip.py. To upgrade pip on Linux run command pip install -U pip

6. AWS SDK for Python is called Boto. You can find more information here http://aws.amazon.com/sdk-for-python To install Boto run command pip install boto. Alternatively you can install Boto from git by running :

   | git clone git://github.com/boto/boto.git
   | cd boto
   | python setup.py install

7. Configure Boto credentials: Information about Boto configuration is available here - https://boto.readthedocs.org/en/latest/boto_config_tut.html. Depending on the OS you use, the configuration may vary. In Linux and MAC a file named /etc/boto.cfg for all users or ~/.boto for single user has to be created. The content of the file should have the following lines. If you are using IAM roles with S3 access on an EC2 instances, this step can be ignored.

| [Credentials]
| aws_access_key_id = <your_access_key_here>
| aws_secret_access_key = <your_secret_key_here>

S3 pre-signed URLs

1. More information about S3 pre-signed URLs can be found here --> http://docs.aws.amazon.com/AmazonS3/latest/dev/ShareObjectPreSignedURL.html

2. To create a pre-signed URL using this script, enter the S3 bucketname containing the object, the path of the object in the bucket and the duration for the object to be accessible.

3. To execute the downloaded code use the following command python s3-signed-url.py

Support and References

Use this script at your own risk.

a. https://aws.amazon.com/premiumsupport/
b. https://www.python.org/
c. http://aws.amazon.com/python/
d. http://aws.amazon.com/sdk-for-python/
e. https://boto.readthedocs.org/en/latest/