Responder: Add completeUri in EIdP JSON message

[eisenmann-b1]

This adds verification_uri_complete as JSON parameter completeUri in the message provided to GDM.

Ideally, this would be used for QR codes, if non-empty.

[gemini-code-assist]

Code Review

This pull request adds a completeUri field to the EIdP JSON message. The implementation is straightforward, but the associated tests appear to be broken as the test expectations were not updated. I've also included a suggestion to conditionally add the new field to the JSON payload to align better with the intent described in the pull request description.

[gemini-code-assist]

The pull request description mentions that completeUri should ideally be used "if non-empty". To better align with this, consider omitting the completeUri field from the JSON object when its value is NULL or an empty string. This would simplify parsing on the consumer side, as it would only need to check for the key's existence.

This would require refactoring the json_pack() call to build the object by adding fields conditionally, for example:

json_oauth2 = json_pack("{s:s,s:s,s:s,s:s,s:s,s:i}",
                        "name", "Web Login",
                        "role", "eidp",
                        "initPrompt", auth_data->oauth2->init_prompt,
                        "linkPrompt", auth_data->oauth2->link_prompt,
                        "uri", auth_data->oauth2->uri,
                        "code", auth_data->oauth2->code,
                        "timeout", 300);
if (json_oauth2 == NULL) { ... }

if (auth_data->oauth2->complete_uri && *auth_data->oauth2->complete_uri) {
    json_object_set_new(json_oauth2, "completeUri",
                      json_string(auth_data->oauth2->complete_uri));
    // ... error handling ...
}

[alexey-tikhonov]

Hi @eisenmann-b1,

could you please rebase?

[ikerexxe]

Do you mind updating the design page available at https://github.com/SSSD/sssd.io/blob/master/src/design-pages/passwordless_gdm.rst?

[eisenmann-b1]

Do you mind updating the design page available at https://github.com/SSSD/sssd.io/blob/master/src/design-pages/passwordless_gdm.rst?

Done.
It's only a small note and an update to the example JSON though, since none of the other methods there go into much detail either.

SSSD/sssd.io#99