How to interact with Unity via oidc-agent
¶
oidc-agent
is a set of tools to manage OpenID Connect tokens and make them easily usable from the command line.
Installing the agent¶
For installing the agent follow the instructions on the website of oidc-agent
:
https://indigo-dc.gitbook.io/oidc-agent/intro
A growing number of Linux distributions have oidc-agent
already in their repository. If you use one of these distributions you may want to use the packaged version.
Create a Configuration for the Helmholtz AAI¶
oidc-agent
comes with a number of pre-configured public client configurations. There is also a public client for the Helmholtz AAI which makes configuration easy.
- In order to start the configuration process:
oidc-gen --pub <shortname>
- Enter
https://login.helmholtz.de/oauth2/
as issuer or select the corresponding number from the presented list. - Select the scopes you want to access or accept the preconfigured list.
- Enter the desired redirection URLs (you have to add at least one - if you only plan to use the CLI agent, this doesn’t really matter, so you can use e.g.
http://localhost:8080
) - Important: Login with your home IdP in the browser window which opens. This step is necessary to complete the account configuration.
- as a final step, add a password for the generated configuration. You will need this password everytime, you add the configuration to
oidc-agent
so note down your passphrase carefully - start
oidc-agent
and set the necessary environment variables witheval `oidc-agent`
- check if your configuration works with
oidc-token <short name of your configuration>
Nota bene
- If you are configuring the
oidc-agent
on a computer without an XSession (e.g. on a machine where you are logged in with puressh
, you will need to use the commandoidc-gen --pub --no-url-call --no-webserver <shortname>
. The agent will then print out a URL you can copy into a browser of your choice, log in as usual and you will get a message “Page not found”. Copy the URL in the URL-bar of the browser and follow the instructions given byoidc-agent
in yourssh
-session before. - If you are logged into a machine via
ssh
and the$DISPLAY
environment variable is not set,oidc-agent
will assume that you are on a “dumb” device and invoke an authorization flow that is deactivated in the Helmholtz AAI. Your configuration attempt will fail unless you setexport DISPLAY=0:
assuming you are on a Linux machine.
Accessing user information¶
After configuring oidc-agent
and logging in you can now start using it. You can, for example, request your users information with curl
:
curl -H "Authorization: Bearer `oidc-token <short name of your configuration>`" -X GET https://login.helmholtz.de/oauth2/userinfo
If you want to have a nice, readable output, you can format the result with jq
(you will probably have to install jq before that):
curl -H "Authorization: Bearer `oidc-token <short name of your configuration>`" -X GET https://login.helmholtz.de/oauth2/userinfo | jq .
This should give you something like:
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