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app-filter: Add mct_app_filter_is_enabled() API

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This is a high-level API to indicate whether parental controls are
‘enabled’ for the given user. Specifically, whether any of the
properties of the `MctAppFilter` differ from their default value.

Includes tests.

Signed-off-by: Philip Withnall <withnall@endlessm.com>
This commit is contained in:
Philip Withnall 2020-03-20 14:56:36 +00:00
parent faa0b9a3eb
commit f106319fdd
3 changed files with 112 additions and 0 deletions
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48
libmalcontent/app-filter.c
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@ -123,6 +123,54 @@ oars_str_to_enum (const gchar *value_str)
return MCT_APP_FILTER_OARS_VALUE_UNKNOWN;
}
/**
* mct_app_filter_is_enabled:
* @filter: an #MctAppFilter
*
* Check whether the app filter is enabled and is going to impose at least one
* restriction on the user. This gives a high level view of whether app filter
* parental controls are ‘enabled’ for the given user.
*
* Returns: %TRUE if the app filter contains at least one non-default value,
* %FALSE if it’s entirely default
* Since: 0.7.0
*/
gboolean
mct_app_filter_is_enabled (MctAppFilter *filter)
{
gboolean oars_ratings_all_intense_or_unknown;
GVariantIter iter;
const gchar *oars_value;
g_return_val_if_fail (filter != NULL, FALSE);
g_return_val_if_fail (filter->ref_count >= 1, FALSE);
/* The least restrictive OARS filter has all values as intense, or unknown. */
oars_ratings_all_intense_or_unknown = TRUE;
g_variant_iter_init (&iter, filter->oars_ratings);
while (g_variant_iter_loop (&iter, "{&s&s}", NULL, &oars_value))
{
MctAppFilterOarsValue value = oars_str_to_enum (oars_value);
if (value != MCT_APP_FILTER_OARS_VALUE_UNKNOWN &&
value != MCT_APP_FILTER_OARS_VALUE_INTENSE)
{
oars_ratings_all_intense_or_unknown = FALSE;
break;
}
}
/* Check all fields against their default values. Ignore
* `allow_system_installation` since it’s false by default, so the default
* value is already the most restrictive. */
return ((filter->app_list_type == MCT_APP_FILTER_LIST_BLACKLIST &&
filter->app_list[0] != NULL) ||
filter->app_list_type == MCT_APP_FILTER_LIST_WHITELIST ||
!oars_ratings_all_intense_or_unknown ||
!filter->allow_user_installation);
}
/**
* mct_app_filter_is_path_allowed:
* @filter: an #MctAppFilter