C++ (Cpp) as_utils_spdx_license_tokenize Examples

Example #1

File: as-app-validate.c Project: hughsie/appstream-glib

static gboolean
as_app_validate_license (const gchar *license_text, GError **error)
{
	guint i;
	g_auto(GStrv) licenses = NULL;

	licenses = as_utils_spdx_license_tokenize (license_text);
	if (licenses == NULL) {
		g_set_error (error,
			     AS_APP_ERROR,
			     AS_APP_ERROR_FAILED,
			     "SPDX license text '%s' could not be parsed",
			     license_text);
		return FALSE;
	}
	for (i = 0; licenses[i] != NULL; i++) {
		if (g_strcmp0 (licenses[i], "&") == 0 ||
		    g_strcmp0 (licenses[i], "|") == 0 ||
		    g_strcmp0 (licenses[i], "+") == 0 ||
		    g_strcmp0 (licenses[i], "(") == 0 ||
		    g_strcmp0 (licenses[i], ")") == 0)
			continue;
		if (licenses[i][0] != '@' ||
		    !as_utils_is_spdx_license_id (licenses[i] + 1)) {
			g_set_error (error,
				     AS_APP_ERROR,
				     AS_APP_ERROR_FAILED,
				     "SPDX ID '%s' unknown",
				     licenses[i]);
			return FALSE;
		}
	}
	return TRUE;
}

Example #2

File: as-app-validate.c Project: hughsie/appstream-glib

static gboolean
as_app_validate_is_content_license (const gchar *license)
{
	gboolean requires_all_tokens = TRUE;
	guint content_license_bad_cnt = 0;
	guint content_license_good_cnt = 0;
	g_auto(GStrv) tokens = NULL;
	tokens = as_utils_spdx_license_tokenize (license);
	if (tokens == NULL)
		return FALSE;

	/* this is too complicated to process */
	for (guint i = 0; tokens[i] != NULL; i++) {
		if (g_strcmp0 (tokens[i], "(") == 0 ||
		    g_strcmp0 (tokens[i], ")") == 0)
			return FALSE;
	}

	/* this is a simple expression parser and can be easily tricked */
	for (guint i = 0; tokens[i] != NULL; i++) {
		if (g_strcmp0 (tokens[i], "+") == 0)
			continue;
		if (g_strcmp0 (tokens[i], "|") == 0) {
			requires_all_tokens = FALSE;
			continue;
		}
		if (g_strcmp0 (tokens[i], "&") == 0) {
			requires_all_tokens = TRUE;
			continue;
		}
		if (as_app_validate_is_content_license_id (tokens[i])) {
			content_license_good_cnt++;
		} else {
			content_license_bad_cnt++;
		}
	}

	/* any valid token makes this valid */
	if (!requires_all_tokens && content_license_good_cnt > 0)
		return TRUE;

	/* all tokens are required to be valid */
	if (requires_all_tokens && content_license_bad_cnt == 0)
		return TRUE;

	/* either the license was bad, or it was too complex to process */
	return FALSE;
}

Example #3

File: as-app-validate.c Project: ignatenkobrain/appstream-glib

/**
 * as_app_validate_license:
 **/
static gboolean
as_app_validate_license (const gchar *license_text, GError **error)
{
	guint i;
	_cleanup_strv_free_ gchar **licenses = NULL;

	licenses = as_utils_spdx_license_tokenize (license_text);
	for (i = 0; licenses[i] != NULL; i++) {
		if (g_str_has_prefix (licenses[i], "#"))
			continue;
		if (!as_utils_is_spdx_license_id (licenses[i])) {
			g_set_error (error,
				     AS_APP_ERROR,
				     AS_APP_ERROR_FAILED,
				     "SPDX ID '%s' unknown",
				     licenses[i]);
			return FALSE;
		}
	}
	return TRUE;
}