Determine permissions for resource

[pheyvaer]

Pitch

• Allow developers to determine whether the logged-in user can read/write/control a resource.

Desired solution

• This is part of the SDK.
• Functions along the lines of
  • canWriteToResource(resource)
  • canReadResource(resource)
  • canControlResource(resource)

Acceptance criteria

• I want a JavaScript example.
• The different permissions are listed for resources where the logged-in user has read, read/write, write, and control permissions.

Pointers

I did the following in an app:

async function canWriteToResource(resource, solidFetch) {
  const response = await solidFetch(resource,
    {
      method: 'HEAD'
    });

  const header = response.headers.get('wac-allow');

  if (header) {
    return header.includes('write');
  }

  return false;
}

[RubenVerborgh]

Just https://solidproject.org/TR/wac#wac-allow and https://github.com/RubenVerborgh/wac-allow? I.e., I think it's a pure development issue, and libraries already exist.

[pheyvaer]

Sweet! This works for me.