Overview

A simple cmdline tool that will fetch an OAuth2 token and print it to the cmdline. This is useful in scripts such as:

curl -v --request GET --url http://my.api -H "Authorization: Bearer `./oauth2t`"

It will only use the client-credentials OAuth2 flow since its designed to be used in automated scripts and pipelines. It can take configuration for the issuer, client_id, and client_secret via config file, environment variables, or cmdline variables.

Configuration

The oauth2t will need to know the client_id and client_secret specific to your project when performing the OAuth2 client-credentials authentication flow. These values would be available to you when you created your service account.

Configuration can be specific on the cmdline, in environment variables, and in a config file, in highest precedence order respectively. oauth2t will look in all locations and build the configuration after evaluating config sources.

File

The config file can be specified as oauth2t.json, oauth2.yaml, oauth2.properties to describe configuration in json, yaml, or java properties respectively. oauth2t will look for the file in your current working directory.

YAML example:

client_id: "YOUR CLIENT ID"
client_secret: "YOUR CLIENT SECRET"

ENV Variable example:

OAUTH2T_CLIENT_ID="YOUR CLIENT ID"
OAUTH2T_CLIENT_SECRET="YOUR CLIENT SECRET"