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Use the following procedures to authenticate your application or script with Teamwork Cloud.

Pre-configuring Authentication server

Authentication server implements the OpenID Connect standard with several customizations. To access the OpenID Connect configuration, go to https://<auth_server_host>:<port>/authentication/.well-known/openid-configuration. Here is a sample of a returned configuration:

{
    "response_types_supported":["id_token","code"],
    "validation_endpoint":"https://<hostname>:8443/authentication/api/validate",
    "jwks_uri":"https://<hostname>:8443/authentication/jwks.json",
    "subject_types_supported":["public"],
    "id_token_signing_alg_values_supported":["RS256"],
    "signout_endpoint":"https://<hostname>:8443/authentication/api/signout",
    "issuer":"https://<hostname>:8443/authentication",
    "authorization_endpoint":"https://<hostname>:8443/authentication/authorize",
    "token_endpoint":"https://<hostname>:8443/authentication/api/token"
}

Configure Authentication server to accept new client applications by changing these parameters in the authserver.properties file:

1. Add URL of the client app to the whitelist, separating URLs with commas: authentication.redirect.uri.whitelist. This can be either a full URL where users should be redirected back from the Authentication server, or just the beginning of it. The authorization endpoint will not accept redirect uri parameters that cannot be found in the whitelist.
2. Add new client IDs separated with commas: authentication.client.ids. You might need to uncomment this line first. The authorization endpoint will not accept client_id parameters that cannot be found in this list.

There are a few deviations from the standard OpenID Connect specification:

• When invoking the token endpoint, HTTP header X-Auth-Secret with secret must be passed with the value from authserver.properties, parameter authentication.client.secret.
• ID tokens have expiration time (configuration property authentication.token.expirity), they must be refreshed through the token endpoint by passing refresh tokens.

To call TWC REST API with a generated authentication token, the token should be sent in the header of the request: 

Authorization: Token <received_id_token>

Authentication with user interaction

The basic Authorization flow should be as follows:

1. Redirect the user to Authentication server (authorization_endpoint from OpenID Connect configuration) with HTTP GET parameters: 

scope=openid
redirect_uri=<your_app_url>
client_id=<your_client_id>
response_type=code

2. After the user signs in, receive HTTP GET request with a code parameter.

3. Send an HTTP POST request to the token endpoint of the Authentication server (token_endpoint from OpenID Connect configuration) with HTTP header X-Auth-Secret and parameters: 

scope=openid
redirect_uri=<your_app_url>
client_id=<your_client_id>
grant_type=authorization_code
code=<code_received_after_user_signs_in>

4. Receive the JSON response with ID Token that can be used to authorize with Teamwork Cloud and refresh token that later should be used to refresh ID Token.

5. Refresh the ID Token by sending HTTP POST request to the token endpoint of the Authentication server (token_endpoint from OpenID Connect configuration) with HTTP header X-Auth-Secret and parameters: 

scope=openid
redirect_uri=<your_app_url>
client_id=<your_client_id>
grant_type=refresh_token   
refresh_token=<refresh_token_value>

Authentication without user interaction

To get a token without user interaction, i.e. using some predefined username and password and make only server-server calls, the system needs to send an HTTP POST request to the token endpoint of the Authentication server with HTTP headers X-Auth-Secret and parameters:

• Headers: 

  Code Block
  X-Auth-Secret: <secret from authentication.client.secret >

  
  

Authorization: Basic xxxxxxxxx, where xxxxxx is base64 encoded username:password

• Query parameters: 

  Code Block
  grant_type=client_credentials client_id=<your_client_id>

  
  

If your client ID is added into the authentication.client.permanent list, the returned token will have a longer expiration time, configured in the parameter authentication.permanent.token.expirity.