s3same

s3same ("sesame", like "open sesame") creates unique-per-repo AWS credentials for Travis CI artifact uploading to S3 and encrypts those credentials with the repo's public key.

Prerequisities

• You may need to install and configure AWS CLI prior. This is easily accomplished using homebrew.

Running the command

brew install awscli

will install the latest release of awscli.

Running the command

aws configure

will initiate configuration.

It will prompt you for the following values:

AWS Access Key ID [None]: YourKey
AWS Secret Access Key [None]: YourKey
Default region name [None]: us-west-2
Default output format [None]: text

NOTE: You may need the help of a Senior iOS dev or a member of the Systems team to generate an AWS Access Key ID and AWS Secret Access Key.

• You may also need to install pip

Run the command

sudo easy_install pip

to install.

Installation

Running the command

sudo pip install s3same

will install the latest stable release of s3same as a command in /usr/local/bin.

Note, if you are having issues related to the file directory not being found, you may need to try appending the --no-binary option with the :all: value to the command

sudo pip install --no-binary :all: s3same

Usage

$ s3same --help
Usage: s3same [OPTIONS] REPO

Options:
  --pro               Use Travis CI Pro
  --github TEXT       GitHub token
  --owner TEXT        GitHub owner
  --s3-bucket TEXT    S3 bucket for artifacts
  --aws-region TEXT   AWS region
  --aws-key TEXT      AWS key
  --aws-secret TEXT   AWS secret
  --aws-profile TEXT  AWS profile
  --nuke              Nuke the entire s3same setup on IAM
  --help              Show this message and exit.

Let's assume you've got your AWS credentials in ~/.aws/credentials. Go to your GitHub settings and create a personal access token for s3same (the token must have the repo permission). Create ~/.s3same with:

GITHUB_TOKEN=put your token here
S3_BUCKET=the bucket to which artifacts will be uploaded
AWS_PROFILE=some profile
AWS_REGION=your AWS region

If your AWS credentials are in the default profile, you can omit the AWS_PROFILE line.

With all the credentials in place, running

$ s3same some-repo-name --owner some-user --pro

will create an AWS IAM user unique to the repo (s3same_travis__some-user__some-repo-name), add that user to the s3same_travis AWS IAM group (creating the group if it doesn't exist) to give it the necessary permissions (defined by the s3same_travis policy, which will be created if it doesn't exist), generate an AWS key and secret for that user, use the public key for the given repo on Travis CI to encrypt the key and secret, and print out the YAML snippet to use for artifact uploading credentials.

Configuration

Several configuration parameters can be specified by the environment, in the ~/.s3same file, or on the command line. The name/syntax for environment variables and within the ~/.s3same file are the same. Anything in the ~/.s3same file overrides the corresponding environment variable and anything passed as a command-line parameter overrides the environment variables and the ~/.s3same file. Setting an AWS key/secret pair overrides specifying an AWS configuration profile.

Parameter	Variable Name	Command-Line
GitHub Token	GITHUB_TOKEN	--github
GitHub Owner	GITHUB_OWNER	--owner
S3 Bucket	S3_BUCKET	--s3-bucket
AWS Region	AWS_REGION	--aws-region
AWS Key	AWS_ACCESS_KEY_ID	--aws-key
AWS Secret	AWS_SECRET_ACCESS_KEY	--aws-secret
AWS Profile	AWS_PROFILE	--aws-profile