Bug 1337056 - Part 1: Add a mechanism for grouping permissions into groups to...

  }

  return NS_OK;

}

// XXX: Support file URIs here as well!

/* static */ void

nsPermissionManager::GetKeyForPrincipal(nsIPrincipal* aPrincipal, nsACString& aKey)

{

  MOZ_ASSERT(aPrincipal);

  aKey.Truncate();

  nsCOMPtr<nsIURI> uri;

  nsresult rv = aPrincipal->GetURI(getter_AddRefs(uri));

  if (NS_WARN_IF(NS_FAILED(rv) || !uri)) {

    // NOTE: We don't propagate the error here, instead we produce the default

    // "" permission key. This means that we can assign every principal a key,

    // even if the GetURI operation on that principal is not meaningful.

    return;

  }

  // If the URI isn't of one of the supported schemes, it has the "" permission

  // key. We can do an early return in that case.

  nsAutoCString scheme;

  uri->GetScheme(scheme);

  if (!scheme.EqualsLiteral("http") &&

      !scheme.EqualsLiteral("https") &&

      !scheme.EqualsLiteral("ftp")) {

    return;

  }

  // We key sets of permissions to be sent over IPC based on their eTLD+1, or in

  // the case where that isn't meaningful, on their IP address or spec.

  nsCOMPtr<nsIEffectiveTLDService> etldService =

    do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);

  rv = etldService->GetBaseDomain(uri, 0, aKey);

  if (NS_FAILED(rv)) {

    rv = uri->GetHost(aKey);

  }

  if (NS_FAILED(rv)) {

    rv = uri->GetSpec(aKey);

  }

  if (NS_FAILED(rv)) {

    aKey.Truncate();

  }

}

  nsresult

  RemovePermissionsWithAttributes(mozilla::OriginAttributesPattern& aAttrs);

  /**

   * See `nsIPermissionManager::GetPermissionsWithKey` for more info on

   * permission keys.

   *

   * Get the permission key corresponding to the given Principal. This method is

   * intentionally infallible, as we want to provide an permission key to every

   * principal. Principals which don't have meaningful URIs with http://,

   * https://, or ftp:// schemes are given the default "" Permission Key.

   *

   * @param aPrincipal  The Principal which the key is to be extracted from.

   * @param aPermissionKey  A string which will be filled with the permission key.

   */

  static void GetKeyForPrincipal(nsIPrincipal* aPrincipal, nsACString& aPermissionKey);

private:

  virtual ~nsPermissionManager();