예제 #1
0
/**
 * as_validator_check_appear_once:
 **/
static void
as_validator_check_appear_once (AsValidator *validator, xmlNode *node, GHashTable *known_tags, AsComponent *cpt)
{
	g_autofree gchar *lang = NULL;
	gchar *tag_id;
	const gchar *node_name;

	/* generate tag-id to make a unique identifier for localized and unlocalized tags */
	node_name = (const gchar*) node->name;
	lang = (gchar*) xmlGetProp (node, (xmlChar*) "lang");
	if (lang == NULL)
		tag_id = g_strdup (node_name);
	else
		tag_id = g_strdup_printf ("%s (lang=%s)", node_name, lang);

	if (g_hash_table_contains (known_tags, tag_id)) {
		as_validator_add_issue (validator, node,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_DUPLICATED,
					"The tag '%s' appears multiple times, while it should only be defined once per component.",
					tag_id);
	}

	/* add to list of known tags (takes ownership/frees tag_id) */
	g_hash_table_add (known_tags, tag_id);
}
예제 #2
0
/**
 * as_validator_check_children_quick:
 **/
static void
as_validator_check_children_quick (AsValidator *validator, xmlNode *node, const gchar *allowed_tagname, AsComponent *cpt)
{
	xmlNode *iter;

	for (iter = node->children; iter != NULL; iter = iter->next) {
		const gchar *node_name;
		/* discard spaces */
		if (iter->type != XML_ELEMENT_NODE)
			continue;
		node_name = (const gchar*) iter->name;

		if (g_strcmp0 (node_name, allowed_tagname) == 0) {
			g_autofree gchar *tag_path = NULL;
			tag_path = g_strdup_printf ("%s/%s", (const gchar*) node->name, node_name);
			as_validator_check_content_empty (validator,
								iter,
								tag_path,
								AS_ISSUE_IMPORTANCE_WARNING,
								cpt);
		} else {
			as_validator_add_issue (validator, node,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found tag '%s' in section '%s'. Only '%s' tags are allowed.",
						node_name,
						(const gchar*) node->name,
						allowed_tagname);
		}
	}
}
예제 #3
0
/**
 * as_validator_check_nolocalized:
 **/
static void
as_validator_check_nolocalized (AsValidator *validator, xmlNode* node, const gchar *node_path, AsComponent *cpt, const gchar *format)
{
	gchar *lang;

	lang = (gchar*) xmlGetProp (node, (xmlChar*) "lang");
	if (lang != NULL) {
		as_validator_add_issue (validator, node,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_PROPERTY_INVALID,
					format,
					node_path);
	}
	g_free (lang);
}
예제 #4
0
/**
 * as_validator_check_type_property:
 **/
static gchar*
as_validator_check_type_property (AsValidator *validator, AsComponent *cpt, xmlNode *node)
{
	gchar *prop;
	gchar *content;
	prop = (gchar*) xmlGetProp (node, (xmlChar*) "type");
	content = (gchar*) xmlNodeGetContent (node);
	if (prop == NULL) {
		as_validator_add_issue (validator, node,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_PROPERTY_MISSING,
					"'%s' tag has no 'type' property: %s",
					(const gchar*) node->name,
					content);
	}
	g_free (content);

	return prop;
}
예제 #5
0
/**
 * as_validator_check_content:
 **/
static void
as_validator_check_content_empty (AsValidator *validator, xmlNode *node, const gchar *tag_path, AsIssueImportance importance, AsComponent *cpt)
{
	g_autofree gchar *node_content = NULL;

	node_content = (gchar*) xmlNodeGetContent (node);
	g_strstrip (node_content);
	if (!as_str_empty (node_content))
		return;

	/* release tags are allowed to be empty */
	if (g_str_has_prefix (tag_path, "release"))
		return;

	as_validator_add_issue (validator, node,
				importance,
				AS_ISSUE_KIND_VALUE_WRONG,
				"Found empty '%s' tag.",
				tag_path);
}
예제 #6
0
/**
 * as_validator_open_xml_document:
 */
static xmlDoc*
as_validator_open_xml_document (AsValidator *validator, AsXMLData *xdt, const gchar *xmldata)
{
	xmlDoc *doc;
	g_autoptr(GError) error = NULL;

	doc = as_xmldata_parse_document (xdt, xmldata, &error);
	if (doc == NULL) {
		if (error != NULL) {
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_MARKUP_INVALID,
						error->message);
		}

		return NULL;
	}

	return doc;
}
예제 #7
0
/**
 * as_validator_check_content:
 **/
static void
as_validator_check_content_empty (AsValidator *validator, const gchar *content, const gchar *tag_name, AsIssueImportance importance, AsComponent *cpt)
{
	gchar *tmp;
	tmp = g_strdup (content);
	g_strstrip (tmp);
	if (!as_str_empty (tmp))
		goto out;

	/* release tags are allowed to be empty */
	if (g_str_has_prefix (tag_name, "release"))
		goto out;

	as_validator_add_issue (validator,
				importance,
				AS_ISSUE_KIND_VALUE_WRONG,
				"Found empty '%s' tag.",
				tag_name);
out:
	g_free (tmp);
}
예제 #8
0
/**
 * as_validator_validate_file:
 * @validator: An instance of #AsValidator.
 * @metadata_file: An AppStream XML file.
 *
 * Validate an AppStream XML file
 **/
gboolean
as_validator_validate_file (AsValidator *validator, GFile *metadata_file)
{
	g_autoptr(GFileInfo) info = NULL;
	g_autoptr(GInputStream) file_stream = NULL;
	g_autoptr(GInputStream) stream_data = NULL;
	g_autoptr(GConverter) conv = NULL;
	g_autoptr(GString) asxmldata = NULL;
	g_autofree gchar *fname = NULL;
	gssize len;
	const gsize buffer_size = 1024 * 32;
	g_autofree gchar *buffer = NULL;
	const gchar *content_type = NULL;
	g_autoptr(GError) tmp_error = NULL;
	gboolean ret;

	info = g_file_query_info (metadata_file,
				G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
				G_FILE_QUERY_INFO_NONE,
				NULL, NULL);
	if (info != NULL)
		content_type = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);

	fname = g_file_get_basename (metadata_file);
	as_validator_set_current_fname (validator, fname);

	file_stream = G_INPUT_STREAM (g_file_read (metadata_file, NULL, &tmp_error));
	if (tmp_error != NULL) {
		as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_READ_ERROR,
					"Unable to read file: %s", tmp_error->message);
		return FALSE;
	}
	if (file_stream == NULL)
		return FALSE;

	if ((g_strcmp0 (content_type, "application/gzip") == 0) || (g_strcmp0 (content_type, "application/x-gzip") == 0)) {
		/* decompress the GZip stream */
		conv = G_CONVERTER (g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP));
		stream_data = g_converter_input_stream_new (file_stream, conv);
	} else {
		stream_data = g_object_ref (file_stream);
	}

	asxmldata = g_string_new ("");
	buffer = g_malloc (buffer_size);
	while ((len = g_input_stream_read (stream_data, buffer, buffer_size, NULL, &tmp_error)) > 0) {
		g_string_append_len (asxmldata, buffer, len);
	}
	if (tmp_error != NULL) {
		as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_READ_ERROR,
					"Unable to read file: %s", tmp_error->message);
		return FALSE;
	}
	/* check if there was an error */
	if (len < 0)
		return FALSE;

	ret = as_validator_validate_data (validator, asxmldata->str);
	as_validator_clear_current_fname (validator);

	return ret;
}
예제 #9
0
/**
 * as_validator_validate_component_node:
 **/
static AsComponent*
as_validator_validate_component_node (AsValidator *validator, AsXMLData *xdt, xmlNode *root)
{
	xmlNode *iter;
	AsComponent *cpt;
	g_autofree gchar *cpttype = NULL;
	g_autoptr(GHashTable) found_tags = NULL;

	AsFormatStyle mode;
	gboolean has_metadata_license = FALSE;

	found_tags = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
	mode = as_xmldata_get_format_style (xdt);

	/* validate the resulting AsComponent for sanity */
	cpt = as_component_new ();
	as_xmldata_parse_component_node (xdt, root, cpt, NULL);
	as_validator_set_current_cpt (validator, cpt);

	/* check if component type is valid */
	cpttype = (gchar*) xmlGetProp (root, (xmlChar*) "type");
	if (cpttype != NULL) {
		if (as_component_kind_from_string (cpttype) == AS_COMPONENT_KIND_UNKNOWN) {
			as_validator_add_issue (validator, root,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_VALUE_WRONG,
						"Invalid component type found: %s",
						cpttype);
		}
	}

	if ((as_component_get_priority (cpt) != 0) && (mode == AS_FORMAT_STYLE_METAINFO)) {
		as_validator_add_issue (validator, root,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component has a priority value set. This is not allowed in metainfo files.");
	}

	if ((as_component_get_merge_kind (cpt) != AS_MERGE_KIND_NONE) && (mode == AS_FORMAT_STYLE_METAINFO)) {
		as_validator_add_issue (validator, root,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component has a 'merge' method defined. This is not allowed in metainfo files.");
	}

	for (iter = root->children; iter != NULL; iter = iter->next) {
		const gchar *node_name;
		g_autofree gchar *node_content = NULL;
		gboolean tag_valid = TRUE;
		/* discard spaces */
		if (iter->type != XML_ELEMENT_NODE)
			continue;
		node_name = (const gchar*) iter->name;
		node_content = (gchar*) xmlNodeGetContent (iter);

		if (g_strcmp0 (node_name, "id") == 0) {
			gchar *prop;
			prop = (gchar*) xmlGetProp (iter, (xmlChar*) "type");
			if (prop != NULL) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_INFO,
							AS_ISSUE_KIND_PROPERTY_INVALID,
							"The id tag for \"%s\" still contains a 'type' property, probably from an old conversion.",
							node_content);
			}
			g_free (prop);
			if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
				if (!g_str_has_suffix (node_content, ".desktop"))
					as_validator_add_issue (validator, iter,
								AS_ISSUE_IMPORTANCE_WARNING,
								AS_ISSUE_KIND_VALUE_WRONG,
								"Component id belongs to a desktop-application, but does not resemble the .desktop file name: \"%s\"",
								node_content);
			}

			/* validate the AppStream ID */
			as_validator_validate_component_id (validator, iter, cpt);
		} else if (g_strcmp0 (node_name, "metadata_license") == 0) {
			has_metadata_license = TRUE;
			as_validator_check_appear_once (validator, iter, found_tags, cpt);

			/* the license must allow easy mixing of metadata in metainfo files */
			if (mode == AS_FORMAT_STYLE_METAINFO) {
				if (!as_license_is_metadata_license (node_content)) {
					as_validator_add_issue (validator, iter,
								AS_ISSUE_IMPORTANCE_WARNING,
								AS_ISSUE_KIND_VALUE_WRONG,
								"The metadata itself does not seem to be licensed under a permissive license. Please license the data under a permissive license, like FSFAP, CC-0-1.0 or MIT "
								"to allow distributors to include it in mixed data collections without the risk of license violations due to mutually incompatible licenses.");
				}
			}
		} else if (g_strcmp0 (node_name, "pkgname") == 0) {
			if (g_hash_table_contains (found_tags, node_name)) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_PEDANTIC,
							AS_ISSUE_KIND_TAG_DUPLICATED,
							"The tag 'pkgname' appears multiple times. You should evaluate creating a metapackage containing the data in order to avoid defining multiple package names per component.");
			}
		} else if (g_strcmp0 (node_name, "source_pkgname") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "name") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			if (g_str_has_suffix (node_content, ".")) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_INFO,
							AS_ISSUE_KIND_VALUE_ISSUE,
							"The component name should not end with a \".\" [%s]",
							node_content);
			}

		} else if (g_strcmp0 (node_name, "summary") == 0) {
			const gchar *summary = node_content;

			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			if (g_str_has_suffix (summary, "."))
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_INFO,
							AS_ISSUE_KIND_VALUE_ISSUE,
							"The component summary should not end with a \".\" [%s]",
							summary);

			if ((summary != NULL) && ((strstr (summary, "\n") != NULL) || (strstr (summary, "\t") != NULL))) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"The summary tag must not contain tabs or linebreaks.");
			}
		} else if (g_strcmp0 (node_name, "description") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_description_tag (validator, iter, cpt, mode);
		} else if (g_strcmp0 (node_name, "icon") == 0) {
			gchar *prop;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if ((g_strcmp0 (prop, "cached") == 0) || (g_strcmp0 (prop, "stock") == 0)) {
				if (g_strrstr (node_content, "/") != NULL)
					as_validator_add_issue (validator, iter,
								AS_ISSUE_IMPORTANCE_ERROR,
								AS_ISSUE_KIND_VALUE_WRONG,
								"Icons of type 'stock' or 'cached' must not contain a full or relative path to the icon.");
			}
			g_free (prop);
		} else if (g_strcmp0 (node_name, "url") == 0) {
			gchar *prop;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if (as_url_kind_from_string (prop) == AS_URL_KIND_UNKNOWN) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_PROPERTY_INVALID,
							"Invalid property for 'url' tag: \"%s\"",
							prop);
			}
			g_free (prop);
		} else if (g_strcmp0 (node_name, "categories") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "category", cpt);
		} else if (g_strcmp0 (node_name, "keywords") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "keyword", cpt);
		} else if (g_strcmp0 (node_name, "mimetypes") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "mimetype", cpt);
		} else if (g_strcmp0 (node_name, "provides") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "screenshots") == 0) {
			as_validator_check_children_quick (validator, iter, "screenshot", cpt);
		} else if (g_strcmp0 (node_name, "project_license") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "project_group") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "developer_name") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "compulsory_for_desktop") == 0) {
			if (!as_utils_is_desktop_environment (node_content)) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown desktop-id '%s'.", node_content);
			}
		} else if (g_strcmp0 (node_name, "releases") == 0) {
			as_validator_check_children_quick (validator, iter, "release", cpt);
		} else if (g_strcmp0 (node_name, "languages") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "lang", cpt);
		} else if ((g_strcmp0 (node_name, "translation") == 0) && (mode == AS_FORMAT_STYLE_METAINFO)) {
			g_autofree gchar *prop = NULL;
			AsTranslationKind trkind;
			prop = as_validator_check_type_property (validator, cpt, iter);
			trkind = as_translation_kind_from_string (prop);
			if (prop != NULL && trkind == AS_TRANSLATION_KIND_UNKNOWN) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown type '%s' for <translation/> tag.", prop);
			}
		} else if (g_strcmp0 (node_name, "extends") == 0) {
		} else if (g_strcmp0 (node_name, "bundle") == 0) {
			g_autofree gchar *prop = NULL;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if (prop != NULL && as_bundle_kind_from_string (prop) == AS_BUNDLE_KIND_UNKNOWN) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown type '%s' for <bundle/> tag.", prop);
			}
		} else if (g_strcmp0 (node_name, "update_contact") == 0) {
			if (mode == AS_FORMAT_STYLE_COLLECTION) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_WARNING,
							AS_ISSUE_KIND_TAG_NOT_ALLOWED,
							"The 'update_contact' tag should not be included in collection AppStream XML.");
			} else {
				as_validator_check_appear_once (validator, iter, found_tags, cpt);
			}
		} else if (g_strcmp0 (node_name, "suggests") == 0) {
			as_validator_check_children_quick (validator, iter, "id", cpt);
		} else if ((g_strcmp0 (node_name, "metadata") == 0) || (g_strcmp0 (node_name, "kudos") == 0)) {
			/* these tags are GNOME / Fedora specific extensions and are therefore quite common. They shouldn't make the validation fail,
			 * especially if we might standardize at leat the <kudos/> tag one day, but we should still complain about those tags to make
			 * it obvious that they are not supported by all implementations */
			as_validator_add_issue (validator, iter,
						AS_ISSUE_IMPORTANCE_INFO,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found invalid tag: '%s'. This tag is a GNOME extensions to AppStream and is not supported by all implementations.",
						node_name);
			tag_valid = FALSE;
		} else if (!g_str_has_prefix (node_name, "x-")) {
			as_validator_add_issue (validator, iter,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found invalid tag: '%s'. Non-standard tags must be prefixed with \"x-\".",
						node_name);
			tag_valid = FALSE;
		}

		if (tag_valid) {
			as_validator_check_content_empty (validator,
							  iter,
							  node_name,
							  AS_ISSUE_IMPORTANCE_WARNING,
							  cpt);
		}
	}

	/* emit an error if we are missing the metadata license in metainfo files */
	if ((!has_metadata_license) && (mode == AS_FORMAT_STYLE_METAINFO)) {
		as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_MISSING,
					"The essential tag 'metadata_license' is missing.");
	}

	/* check if we have a description */
	if (as_str_empty (as_component_get_description (cpt))) {
		AsComponentKind cpt_kind;
		cpt_kind = as_component_get_kind (cpt);

		if ((cpt_kind == AS_COMPONENT_KIND_DESKTOP_APP) ||
		    (cpt_kind == AS_COMPONENT_KIND_CONSOLE_APP) ||
		    (cpt_kind == AS_COMPONENT_KIND_WEB_APP)) {
			as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_MISSING,
					"The component is missing a long description. Components of this type must have a long description.");
		} else if (cpt_kind == AS_COMPONENT_KIND_FONT) {
			as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_PEDANTIC,
					AS_ISSUE_KIND_TAG_MISSING,
					"It would be useful for add a long description to this font to present it better to users.");
		} else if (cpt_kind != AS_COMPONENT_KIND_GENERIC) {
			as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_INFO,
					AS_ISSUE_KIND_TAG_MISSING,
					"The component is missing a long description. It is recommended to add one.");
		}
	}

	/* validate console-app specific stuff */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_CONSOLE_APP) {
		if (as_component_get_provided_for_kind (cpt, AS_PROVIDED_KIND_BINARY) == NULL)
			as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_TAG_MISSING,
					"Type 'console-application' component, but no information about binaries in $PATH was provided via a provides/binary tag.");
	}

	/* validate font specific stuff */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_FONT) {
		if (as_component_get_provided_for_kind (cpt, AS_PROVIDED_KIND_FONT) == NULL)
			as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_TAG_MISSING,
					"Type 'font' component, but no font information was provided via a provides/font tag.");
	}

	/* validate driver specific stuff */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DRIVER) {
		if (as_component_get_provided_for_kind (cpt, AS_PROVIDED_KIND_MODALIAS) == NULL)
			as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_INFO,
					AS_ISSUE_KIND_TAG_MISSING,
					"Type 'driver' component, but no modalias information was provided via a provides/modalias tag.");
	}

	/* validate addon specific stuff */
	if (as_component_get_extends (cpt)->len > 0) {
		AsComponentKind kind = as_component_get_kind (cpt);
		if ((kind != AS_COMPONENT_KIND_ADDON) && (kind != AS_COMPONENT_KIND_LOCALIZATION))
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_NOT_ALLOWED,
						"An 'extends' tag is specified, but the component is not of type 'addon' or 'localization'.");
	} else {
		if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_ADDON)
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_MISSING,
						"The component is an addon, but no 'extends' tag was specified.");
	}

	/* validate l10n specific stuff */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_LOCALIZATION) {
		if (as_component_get_extends (cpt)->len == 0) {
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_TAG_MISSING,
						"This 'localization' component is missing an An 'extends' tag, to specify the components it adds localization to.");
		}
		if (g_hash_table_size (as_component_get_languages_table (cpt)) == 0) {
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_MISSING,
						"This 'localization' component does not define any languages this localization is for.");
		}
	}

	/* validate suggestions */
	if (as_component_get_suggested (cpt)->len > 0) {
		guint j;
		GPtrArray *sug_array;

		sug_array = as_component_get_suggested (cpt);
		for (j = 0; j < sug_array->len; j++) {
			AsSuggested *prov = AS_SUGGESTED (g_ptr_array_index (sug_array, j));
			if (mode == AS_FORMAT_STYLE_METAINFO) {
				if (as_suggested_get_kind (prov) != AS_SUGGESTED_KIND_UPSTREAM)
					as_validator_add_issue (validator, NULL,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Suggestions of any type other than 'upstream' are not allowed in metainfo files (type was '%s')", as_suggested_kind_to_string (as_suggested_get_kind (prov)));
			}
		}
	}

	as_validator_clear_current_cpt (validator);
	return cpt;
}
예제 #10
0
/**
 * as_validator_validate_component_id:
 *
 * Validate the component-ID.
 */
static void
as_validator_validate_component_id (AsValidator *validator, xmlNode *idnode, AsComponent *cpt)
{
	guint i;
	g_auto(GStrv) cid_parts = NULL;
	g_autofree gchar *cid = (gchar*) xmlNodeGetContent (idnode);

	cid_parts = g_strsplit (cid, ".", 3);
	if (g_strv_length (cid_parts) != 3) {
		if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
			/* since the ID and .desktop-file-id are tied together, we can't make this an error for desktop apps */
			as_validator_add_issue (validator, idnode,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component ID is not a reverse domain-name. Please update the ID and that of the accompanying .desktop file to follow the latest version of the Desktop-Entry and AppStream specifications and avoid future issues.");
		} else {
			/* anything which isn't a .desktop app must follow the schema though */
			as_validator_add_issue (validator, idnode,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component ID is no reverse domain-name.");
		}
	} else {
		/* some people just add random dots to their ID - check if we have an actual known TLD as first part, to be more certain that this is a reverse domain name
		 * (this issue happens quite often with old .desktop files) */
		if (!as_utils_is_tld (cid_parts[0])) {
			as_validator_add_issue (validator, idnode,
						AS_ISSUE_IMPORTANCE_INFO,
						AS_ISSUE_KIND_VALUE_WRONG,
						"The component ID might not follow the reverse domain-name schema (we do not know about the TLD '%s').", cid_parts[0]);
		}
	}

	/* validate characters in AppStream ID */
	for (i = 0; cid[i] != '\0'; i++) {
		/* check if we have a printable, alphanumeric ASCII character or a dot, hyphen or underscore */
		if ((!g_ascii_isalnum (cid[i])) &&
		    (cid[i] != '.') &&
		    (cid[i] != '-') &&
		    (cid[i] != '_')) {
			g_autofree gchar *c = NULL;
			c = g_utf8_substring (cid, i, i + 1);
			as_validator_add_issue (validator, idnode,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component ID [%s] contains an invalid character: '%s'", cid, c);
		}
	}

	/* project-group specific constraints on the ID */
	if ((g_strcmp0 (as_component_get_project_group (cpt), "Freedesktop") == 0) ||
	    (g_strcmp0 (as_component_get_project_group (cpt), "FreeDesktop") == 0)) {
		if (!g_str_has_prefix (cid, "org.freedesktop."))
			as_validator_add_issue (validator, idnode,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_VALUE_WRONG,
						"The component is part of the Freedesktop project, but its id does not start with fd.o's reverse-DNS name (\"org.freedesktop\").");
	} else if (g_strcmp0 (as_component_get_project_group (cpt), "KDE") == 0) {
		if (!g_str_has_prefix (cid, "org.kde."))
			as_validator_add_issue (validator, idnode,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_VALUE_WRONG,
						"The component is part of the KDE project, but its id does not start with KDEs reverse-DNS name (\"org.kde\").");
	} else if (g_strcmp0 (as_component_get_project_group (cpt), "GNOME") == 0) {
		if (!g_str_has_prefix (cid, "org.gnome."))
			as_validator_add_issue (validator, idnode,
						AS_ISSUE_IMPORTANCE_PEDANTIC,
						AS_ISSUE_KIND_VALUE_WRONG,
						"The component is part of the GNOME project, but its id does not start with GNOMEs reverse-DNS name (\"org.gnome\").");
	}
}
예제 #11
0
/**
 * as_validator_check_description_tag:
 **/
static void
as_validator_check_description_tag (AsValidator *validator, xmlNode* node, AsComponent *cpt, AsFormatStyle mode)
{
	xmlNode *iter;
	gchar *node_content;
	gchar *node_name;
	gboolean first_paragraph = TRUE;

	if (mode == AS_FORMAT_STYLE_METAINFO) {
		as_validator_check_nolocalized (validator,
						node,
						(const gchar*) node->name,
						cpt,
						"The '%s' tag should not be localized in upstream metadata. Localize the individual paragraphs instead.");
	}

	for (iter = node->children; iter != NULL; iter = iter->next) {
		/* discard spaces */
		if (iter->type != XML_ELEMENT_NODE)
			continue;
		node_name = (gchar*) iter->name;
		node_content = (gchar*) xmlNodeGetContent (iter);

		if ((g_strcmp0 (node_name, "ul") != 0) && (g_strcmp0 (node_name, "ol") != 0)) {
			as_validator_check_content_empty (validator,
							  node,
							  node_name,
							  AS_ISSUE_IMPORTANCE_WARNING,
							  cpt);
		}

		if (g_strcmp0 (node_name, "p") == 0) {
			if (mode == AS_FORMAT_STYLE_COLLECTION) {
				as_validator_check_nolocalized (validator,
								iter,
								"description/p",
								cpt,
								"The '%s' tag should not be localized in collection metadata. Localize the whole 'description' tag instead.");
			}
			if ((first_paragraph) && (strlen (node_content) < 100)) {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_INFO,
							AS_ISSUE_KIND_VALUE_ISSUE,
							"First 'description/p' paragraph might be too short.",
							node_content);
			}
			first_paragraph = FALSE;
		} else if (g_strcmp0 (node_name, "ul") == 0) {
			if (mode == AS_FORMAT_STYLE_COLLECTION) {
				as_validator_check_nolocalized (validator,
								iter,
								"description/ul",
								cpt,
								"The '%s' tag should not be localized in collection metadata. Localize the whole 'description' tag instead.");
			}
			as_validator_check_children_quick (validator, iter, "li", cpt);
		} else if (g_strcmp0 (node_name, "ol") == 0) {
			if (mode == AS_FORMAT_STYLE_COLLECTION) {
				as_validator_check_nolocalized (validator,
								iter,
								"description/ol",
								cpt,
								"The '%s' tag should not be localized in collection metadata. Localize the whole 'description' tag instead.");
			}
			as_validator_check_children_quick (validator, iter, "li", cpt);
		} else {
			as_validator_add_issue (validator, iter,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found tag '%s' in 'description' section. Only 'p', 'ul' and 'ol' are allowed.",
						node_name);
		}

		g_free (node_content);
	}
}
예제 #12
0
/**
 * as_validator_validate_tree:
 * @validator: An instance of #AsValidator.
 * @root_dir: The root directory of the filesystem tree that should be validated.
 *
 * Validate a full directory tree for issues in AppStream metadata.
 **/
gboolean
as_validator_validate_tree (AsValidator *validator, const gchar *root_dir)
{
	g_autofree gchar *metainfo_dir = NULL;
	g_autofree gchar *legacy_metainfo_dir = NULL;
	g_autofree gchar *apps_dir = NULL;
	g_autoptr(GPtrArray) mfiles = NULL;
	g_autoptr(GPtrArray) mfiles_legacy = NULL;
	g_autoptr(GPtrArray) dfiles = NULL;
	GHashTable *dfilenames = NULL;
	GHashTable *validated_cpts = NULL;
	guint i;
	gboolean ret = TRUE;
	g_autoptr(AsXMLData) xdt = NULL;
	struct MInfoCheckData ht_helper;

	/* cleanup */
	as_validator_clear_issues (validator);

	metainfo_dir = g_build_filename (root_dir, "usr", "share", "metainfo", NULL);
	legacy_metainfo_dir = g_build_filename (root_dir, "usr", "share", "appdata", NULL);
	apps_dir = g_build_filename (root_dir, "usr", "share", "applications", NULL);

	/* check if we actually have a directory which could hold metadata */
	if ((!g_file_test (metainfo_dir, G_FILE_TEST_IS_DIR)) &&
	    (!g_file_test (legacy_metainfo_dir, G_FILE_TEST_IS_DIR))) {
		as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_INFO,
					AS_ISSUE_KIND_FILE_MISSING,
					"No AppStream metadata was found.");
		goto out;
	}

	/* check if we actually have a directory which could hold application information */
	if (!g_file_test (apps_dir, G_FILE_TEST_IS_DIR)) {
		as_validator_add_issue (validator, NULL,
					AS_ISSUE_IMPORTANCE_PEDANTIC, /* pedantic because not everything which has metadata is an application */
					AS_ISSUE_KIND_FILE_MISSING,
					"No XDG applications directory found.");
	}

	/* holds a filename -> component mapping */
	validated_cpts = g_hash_table_new_full (g_str_hash,
						g_str_equal,
						g_free,
						g_object_unref);

	/* set up XML parser */
	xdt = as_xmldata_new ();
	as_xmldata_initialize (xdt, AS_CURRENT_FORMAT_VERSION,
			       "C",
				NULL,
				NULL,
				NULL,
				0);
	as_xmldata_set_format_style (xdt, AS_FORMAT_STYLE_METAINFO);

	/* validate all metainfo files */
	mfiles = as_utils_find_files_matching (metainfo_dir, "*.xml", FALSE, NULL);
	mfiles_legacy = as_utils_find_files_matching (legacy_metainfo_dir, "*.xml", FALSE, NULL);

	/* in case we only have legacy files */
	if (mfiles == NULL)
		mfiles = g_ptr_array_new_with_free_func (g_free);

	if (mfiles_legacy != NULL) {
		for (i = 0; i < mfiles_legacy->len; i++) {
			const gchar *fname;
			g_autofree gchar *fname_basename = NULL;

			/* process metainfo files in legacy paths */
			fname = (const gchar*) g_ptr_array_index (mfiles_legacy, i);
			fname_basename = g_path_get_basename (fname);
			as_validator_set_current_fname (validator, fname_basename);

			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_INFO,
						AS_ISSUE_KIND_LEGACY,
						"The metainfo file is stored in a legacy path. Please place it in '/usr/share/metainfo'.");

			g_ptr_array_add (mfiles, g_strdup (fname));
		}
	}

	for (i = 0; i < mfiles->len; i++) {
		const gchar *fname;
		g_autoptr(GFile) file = NULL;
		g_autoptr(GInputStream) file_stream = NULL;
		g_autoptr(GError) tmp_error = NULL;
		g_autoptr(GString) asdata = NULL;
		gssize len;
		const gsize buffer_size = 1024 * 24;
		g_autofree gchar *buffer = NULL;
		xmlNode *root;
		xmlDoc *doc;
		g_autofree gchar *fname_basename = NULL;

		fname = (const gchar*) g_ptr_array_index (mfiles, i);
		file = g_file_new_for_path (fname);
		if (!g_file_query_exists (file, NULL)) {
			g_warning ("File '%s' suddenly vanished.", fname);
			g_object_unref (file);
			continue;
		}

		fname_basename = g_path_get_basename (fname);
		as_validator_set_current_fname (validator, fname_basename);

		/* load a plaintext file */
		file_stream = G_INPUT_STREAM (g_file_read (file, NULL, &tmp_error));
		if (tmp_error != NULL) {
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_READ_ERROR,
						"Unable to read file: %s", tmp_error->message);
			continue;
		}

		asdata = g_string_new ("");
		buffer = g_malloc (buffer_size);
		while ((len = g_input_stream_read (file_stream, buffer, buffer_size, NULL, &tmp_error)) > 0) {
			g_string_append_len (asdata, buffer, len);
		}
		/* check if there was an error */
		if (tmp_error != NULL) {
			as_validator_add_issue (validator, NULL,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_READ_ERROR,
						"Unable to read file: %s", tmp_error->message);
			continue;
		}

		/* now read the XML */
		doc = as_validator_open_xml_document (validator, xdt, asdata->str);
		if (doc == NULL) {
			as_validator_clear_current_fname (validator);
			continue;
		}
		root = xmlDocGetRootElement (doc);

		if (g_strcmp0 ((gchar*) root->name, "component") == 0) {
			AsComponent *cpt;
			cpt = as_validator_validate_component_node (validator,
								    xdt,
								    root);
			if (cpt != NULL)
				g_hash_table_insert (validated_cpts,
							g_strdup (fname_basename),
							cpt);
		} else if (g_strcmp0 ((gchar*) root->name, "components") == 0) {
			as_validator_add_issue (validator, root,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_NOT_ALLOWED,
					"The metainfo file specifies multiple components. This is not allowed.");
			ret = FALSE;
		} else if (g_str_has_prefix ((gchar*) root->name, "application")) {
			as_validator_add_issue (validator, root,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_LEGACY,
					"The metainfo file uses an ancient version of the AppStream specification, which can not be validated. Please migrate it to version 0.6 (or higher).");
			ret = FALSE;
		}

		as_validator_clear_current_fname (validator);
		xmlFreeDoc (doc);
	}

	/* check if we have matching .desktop files */
	dfilenames = g_hash_table_new_full (g_str_hash,
						g_str_equal,
						g_free,
						NULL);
	dfiles = as_utils_find_files_matching (apps_dir, "*.desktop", FALSE, NULL);
	if (dfiles != NULL) {
		for (i = 0; i < dfiles->len; i++) {
			const gchar *fname;
			fname = (const gchar*) g_ptr_array_index (dfiles, i);
			g_hash_table_add (dfilenames,
						g_path_get_basename (fname));
		}
	}

	/* validate the component-id <-> filename relations and availability of other metadata */
	ht_helper.validator = validator;
	ht_helper.desktop_fnames = dfilenames;
	ht_helper.apps_dir = apps_dir;
	g_hash_table_foreach (validated_cpts,
				(GHFunc) as_validator_analyze_component_metainfo_relation_cb,
				&ht_helper);

out:
	if (dfilenames != NULL)
		g_hash_table_unref (dfilenames);
	if (validated_cpts != NULL)
		g_hash_table_unref (validated_cpts);

	return ret;
}
예제 #13
0
/**
 * as_validator_analyze_component_metainfo_relation_cb:
 *
 * Helper function for GHashTable foreach iteration.
 */
static void
as_validator_analyze_component_metainfo_relation_cb (const gchar *fname, AsComponent *cpt, struct MInfoCheckData *data)
{
	g_autofree gchar *cid_base = NULL;

	/* if we have no component-id, we can't check anything */
	if (as_component_get_id (cpt) == NULL)
		return;

	as_validator_set_current_cpt (data->validator, cpt);
	as_validator_set_current_fname (data->validator, fname);

	/* check if the fname and the component-id match */
	if (g_str_has_suffix (as_component_get_id (cpt), ".desktop")) {
		cid_base = g_strndup (as_component_get_id (cpt),
					g_strrstr (as_component_get_id (cpt), ".") - as_component_get_id (cpt));
	} else {
		cid_base = g_strdup (as_component_get_id (cpt));
	}
	if (!as_matches_metainfo (fname, cid_base)) {
		/* the name-without-type didn't match - check for the full id in the component name */
		if (!as_matches_metainfo (fname, as_component_get_id (cpt))) {
			as_validator_add_issue (data->validator, NULL,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_WRONG_NAME,
					"The metainfo filename does not match the component ID.");
		}
	}

	/* check if the referenced .desktop file exists */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
		if (g_hash_table_contains (data->desktop_fnames, as_component_get_desktop_id (cpt))) {
			g_autofree gchar *desktop_fname_full = NULL;
			g_autoptr(GKeyFile) dfile = NULL;
			GError *tmp_error = NULL;

			desktop_fname_full = g_build_filename (data->apps_dir, as_component_get_desktop_id (cpt), NULL);
			dfile = g_key_file_new ();

			g_key_file_load_from_file (dfile, desktop_fname_full, G_KEY_FILE_NONE, &tmp_error);
			if (tmp_error != NULL) {
				as_validator_add_issue (data->validator, NULL,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_READ_ERROR,
						"Unable to read associated .desktop file: %s", tmp_error->message);
				g_error_free (tmp_error);
				tmp_error = NULL;
			} else {
				/* we successfully opened the .desktop file, now perform some checks */

				/* name */
				if (as_str_empty (as_component_get_name (cpt)) &&
				    (!g_key_file_has_key (dfile, G_KEY_FILE_DESKTOP_GROUP,
								 G_KEY_FILE_DESKTOP_KEY_NAME, NULL))) {
					/* we don't have a summary, and there is also none in the .desktop file - this is bad. */
					as_validator_add_issue (data->validator, NULL,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_MISSING,
							"The component is missing a name (none found in its metainfo or .desktop file)");
				}

				/* summary */
				if (as_str_empty (as_component_get_summary (cpt)) &&
				    (!g_key_file_has_key (dfile, G_KEY_FILE_DESKTOP_GROUP,
								 G_KEY_FILE_DESKTOP_KEY_COMMENT, NULL))) {
					/* we don't have a summary, and there is also none in the .desktop file - this is bad. */
					as_validator_add_issue (data->validator, NULL,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_MISSING,
							"The component is missing a summary (none found in its metainfo or .desktop file)");
				}

				/* categories */
				if (g_key_file_has_key (dfile, G_KEY_FILE_DESKTOP_GROUP,
								G_KEY_FILE_DESKTOP_KEY_CATEGORIES, NULL)) {
					g_autofree gchar *cats_str = NULL;
					g_auto(GStrv) cats = NULL;
					guint i;

					cats_str = g_key_file_get_string (dfile, G_KEY_FILE_DESKTOP_GROUP,
										 G_KEY_FILE_DESKTOP_KEY_CATEGORIES, NULL);
					cats = g_strsplit (cats_str, ";", -1);
					for (i = 0; cats[i] != NULL; i++) {
						if (as_str_empty (cats[i]))
							continue;
						if (!as_utils_is_category_name (cats[i])) {
							as_validator_add_issue (data->validator, NULL,
										AS_ISSUE_IMPORTANCE_ERROR,
										AS_ISSUE_KIND_VALUE_WRONG,
										"The category '%s' defined in the .desktop file does not exist.", cats[i]);
						}
					}
				}

			}
		} else {
			as_validator_add_issue (data->validator, NULL,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_FILE_MISSING,
					"Component metadata refers to a non-existing .desktop file.");
		}
	}

	as_validator_clear_current_cpt (data->validator);
	as_validator_clear_current_fname (data->validator);
}
예제 #14
0
/**
 * as_validator_analyze_component_metainfo_relation_cb:
 *
 * Helper function for GHashTable foreach iteration.
 */
static void
as_validator_analyze_component_metainfo_relation_cb (const gchar *fname, AsComponent *cpt, struct MInfoCheckData *data)
{
	gchar *tmp;

	/* if we have no component-id, we can't check anything */
	if (as_component_get_id (cpt) == NULL)
		return;

	as_validator_set_current_cpt (data->validator, cpt);
	as_validator_set_current_fname (data->validator, fname);

	/* check if the fname and the component-id match */
	tmp = g_strndup (as_component_get_id (cpt),
				g_strrstr (as_component_get_id (cpt), ".") - as_component_get_id (cpt));
	if (!as_matches_metainfo (fname, tmp)) {
		/* the name-without-type didn't match - check for the full id in the component name */
		if (!as_matches_metainfo (fname, as_component_get_id (cpt))) {
			as_validator_add_issue (data->validator,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_WRONG_NAME,
					"The metainfo filename does not match the component ID.");
		}
	}
	g_free (tmp);

	/* check if the referenced .desktop file exists */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
		if (g_hash_table_contains (data->desktop_fnames, as_component_get_id (cpt))) {
			g_autofree gchar *desktop_fname_full = NULL;
			g_autoptr(GKeyFile) dfile = NULL;
			GError *tmp_error = NULL;

			desktop_fname_full = g_build_filename (data->apps_dir, as_component_get_id (cpt), NULL);
			dfile = g_key_file_new ();

			g_key_file_load_from_file (dfile, desktop_fname_full, G_KEY_FILE_NONE, &tmp_error);
			if (tmp_error != NULL) {
				as_validator_add_issue (data->validator,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_READ_ERROR,
						"Unable to read associated .desktop file: %s", tmp_error->message);
				g_error_free (tmp_error);
				tmp_error = NULL;
			} else {
				/* we successfully opened the .desktop file, now perform some checks */

				/* name */
				if ((g_strcmp0 (as_component_get_name (cpt), "") == 0) &&
				    (!g_key_file_has_key (dfile, "Desktop Entry", "Name", NULL))) {
					/* we don't have a summary, and there is also none in the .desktop file - this is bad. */
					as_validator_add_issue (data->validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_MISSING,
							"The component is missing a name (none found in its metainfo or .desktop file)");
				}

				/* summary */
				if ((g_strcmp0 (as_component_get_summary (cpt), "") == 0) &&
				    (!g_key_file_has_key (dfile, "Desktop Entry", "Comment", NULL))) {
					/* we don't have a summary, and there is also none in the .desktop file - this is bad. */
					as_validator_add_issue (data->validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_MISSING,
							"The component is missing a summary (none found in its metainfo or .desktop file)");
				}
			}
		} else {
			as_validator_add_issue (data->validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_FILE_MISSING,
					"Component metadata refers to a non-existing .desktop file.");
		}
	}

	as_validator_clear_current_cpt (data->validator);
	as_validator_clear_current_fname (data->validator);
}
예제 #15
0
/**
 * as_validator_validate_component_node:
 **/
static AsComponent*
as_validator_validate_component_node (AsValidator *validator, AsXMLData *xdt, xmlNode *root)
{
	gchar *cpttype;
	xmlNode *iter;
	AsComponent *cpt;
	gchar *metadata_license = NULL;
	GHashTable *found_tags;
	const gchar *summary;
	AsParserMode mode;

	found_tags = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
	mode = as_xmldata_get_parser_mode (xdt);

	/* validate the resulting AsComponent for sanity */
	cpt = as_component_new ();
	as_xmldata_parse_component_node (xdt, root, cpt, NULL);

	as_validator_set_current_cpt (validator, cpt);

	/* check if component type is valid */
	cpttype = (gchar*) xmlGetProp (root, (xmlChar*) "type");
	if (cpttype != NULL) {
		if (as_component_kind_from_string (cpttype) == AS_COMPONENT_KIND_UNKNOWN) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_VALUE_WRONG,
						"Invalid component type found: %s",
						cpttype);
		}
	}
	g_free (cpttype);

	for (iter = root->children; iter != NULL; iter = iter->next) {
		const gchar *node_name;
		g_autofree gchar *node_content = NULL;
		gboolean tag_valid = TRUE;
		/* discard spaces */
		if (iter->type != XML_ELEMENT_NODE)
			continue;
		node_name = (const gchar*) iter->name;
		node_content = (gchar*) xmlNodeGetContent (iter);

		if (g_strcmp0 (node_name, "id") == 0) {
			gchar *prop;
			prop = (gchar*) xmlGetProp (iter, (xmlChar*) "type");
			if (prop != NULL) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_INFO,
							AS_ISSUE_KIND_PROPERTY_INVALID,
							"The id tag for \"%s\" still contains a 'type' property, probably from an old conversion.",
							node_content);
			}
			g_free (prop);
			if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
				if (!g_str_has_suffix (node_content, ".desktop"))
					as_validator_add_issue (validator,
								AS_ISSUE_IMPORTANCE_WARNING,
								AS_ISSUE_KIND_VALUE_WRONG,
								"Component id belongs to a desktop-application, but does not resemble the .desktop file name: \"%s\"",
								node_content);
			}
		} else if (g_strcmp0 (node_name, "metadata_license") == 0) {
			metadata_license = g_strdup (node_content);
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "pkgname") == 0) {
			if (g_hash_table_contains (found_tags, node_name)) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_PEDANTIC,
							AS_ISSUE_KIND_TAG_DUPLICATED,
							"The tag 'pkgname' appears multiple times. You should evaluate creating a metapackage containing the data in order to avoid defining multiple package names per component.");
			}
		} else if (g_strcmp0 (node_name, "source_pkgname") == 0) {
			if (g_hash_table_contains (found_tags, node_name)) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_TAG_DUPLICATED,
							"The tag 'source_pkgname' appears multiple times.");
			}
		} else if (g_strcmp0 (node_name, "name") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "summary") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "description") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_description_tag (validator, iter, cpt, mode);
		} else if (g_strcmp0 (node_name, "icon") == 0) {
			gchar *prop;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if ((g_strcmp0 (prop, "cached") == 0) || (g_strcmp0 (prop, "stock") == 0)) {
				if (g_strrstr (node_content, "/") != NULL)
					as_validator_add_issue (validator,
								AS_ISSUE_IMPORTANCE_ERROR,
								AS_ISSUE_KIND_VALUE_WRONG,
								"Icons of type 'stock' or 'cached' must not contain a full or relative path to the icon.");
			}
			g_free (prop);
		} else if (g_strcmp0 (node_name, "url") == 0) {
			gchar *prop;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if (as_url_kind_from_string (prop) == AS_URL_KIND_UNKNOWN) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_PROPERTY_INVALID,
							"Invalid property for 'url' tag: \"%s\"",
							prop);
			}
			g_free (prop);
		} else if (g_strcmp0 (node_name, "categories") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "category", cpt);
		} else if (g_strcmp0 (node_name, "keywords") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "keyword", cpt);
		} else if (g_strcmp0 (node_name, "mimetypes") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "mimetype", cpt);
		} else if (g_strcmp0 (node_name, "provides") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "screenshots") == 0) {
			as_validator_check_children_quick (validator, iter, "screenshot", cpt);
		} else if (g_strcmp0 (node_name, "project_license") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "project_group") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "developer_name") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "compulsory_for_desktop") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "releases") == 0) {
			as_validator_check_children_quick (validator, iter, "release", cpt);
		} else if ((g_strcmp0 (node_name, "languages") == 0) && (mode == AS_PARSER_MODE_DISTRO)) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "lang", cpt);
		} else if ((g_strcmp0 (node_name, "translation") == 0) && (mode == AS_PARSER_MODE_UPSTREAM)) {
			g_autofree gchar *prop = NULL;
			AsTranslationKind trkind;
			prop = as_validator_check_type_property (validator, cpt, iter);
			trkind = as_translation_kind_from_string (prop);
			if (trkind == AS_TRANSLATION_KIND_UNKNOWN) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown type '%s' for <translation/> tag.", prop);
			}
		} else if (g_strcmp0 (node_name, "extends") == 0) {
		} else if (g_strcmp0 (node_name, "bundle") == 0) {
			g_autofree gchar *prop = NULL;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if ((g_strcmp0 (prop, "limba") != 0) && (g_strcmp0 (prop, "xdg-app") != 0)) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown type '%s' for <bundle/> tag.", prop);
			}
		} else if (g_strcmp0 (node_name, "update_contact") == 0) {
			if (mode == AS_PARSER_MODE_DISTRO) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_WARNING,
							AS_ISSUE_KIND_TAG_NOT_ALLOWED,
							"The 'update_contact' tag should not be included in distro AppStream XML.");
			} else {
				as_validator_check_appear_once (validator, iter, found_tags, cpt);
			}
		} else if (g_strcmp0 (node_name, "metadata") == 0) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_PEDANTIC,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found custom metadata in <metadata/> tag. Use of this tag is common, but should be avoided if possible.");
			tag_valid = FALSE;
		} else if (!g_str_has_prefix (node_name, "x-")) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found invalid tag: '%s'. Non-standard tags must be prefixed with \"x-\".",
				node_name);
			tag_valid = FALSE;
		}

		if (tag_valid) {
			as_validator_check_content_empty (validator,
							node_content,
							node_name,
							AS_ISSUE_IMPORTANCE_WARNING,
							cpt);
		}
	}

	g_hash_table_unref (found_tags);

	if (metadata_license == NULL) {
		if (mode == AS_PARSER_MODE_UPSTREAM)
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_MISSING,
						"The essential tag 'metadata_license' is missing.");
	} else {
		g_free (metadata_license);
	}

	/* check if the summary is sane */
	summary = as_component_get_summary (cpt);
	if ((summary != NULL) && ((strstr (summary, "\n") != NULL) || (strstr (summary, "\t") != NULL))) {
		as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The summary tag must not contain tabs or linebreaks.");
	}

	/* check if we have a description */
	if (as_str_empty (as_component_get_description (cpt))) {
		AsComponentKind cpt_kind;
		cpt_kind = as_component_get_kind (cpt);

		if ((cpt_kind == AS_COMPONENT_KIND_DESKTOP_APP) ||
			(cpt_kind == AS_COMPONENT_KIND_FONT)) {
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_MISSING,
					"The component is missing a long description. Components of this type must have a long description.");
		} else if (cpt_kind != AS_COMPONENT_KIND_GENERIC) {
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_INFO,
					AS_ISSUE_KIND_TAG_MISSING,
					"The component is missing a long description. It is recommended to add one.");
		}
	}

	/* validate font specific stuff */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_FONT) {
		if (!g_str_has_suffix (as_component_get_id (cpt), ".font"))
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"Components of type 'font' must have an AppStream ID with a '.font' suffix.");
		if (as_component_get_provided_for_kind (cpt, AS_PROVIDED_KIND_FONT) == NULL)
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_TAG_MISSING,
					"Type 'font' component, but no font information was provided via a provides/font tag.");
	}

	/* validate addon specific stuff */
	if (as_component_get_extends (cpt)->len > 0) {
		if (as_component_get_kind (cpt) != AS_COMPONENT_KIND_ADDON)
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_NOT_ALLOWED,
						"An 'extends' tag is specified, but the component is not an addon.");
	} else {
		if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_ADDON)
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_MISSING,
						"The component is an addon, but no 'extends' tag was specified.");
	}

	as_validator_clear_current_cpt (validator);
	return cpt;
}
예제 #16
0
/**
 * as_validator_validate_data:
 * @validator: An instance of #AsValidator.
 * @metadata: XML metadata.
 *
 * Validate AppStream XML data
 **/
gboolean
as_validator_validate_data (AsValidator *validator, const gchar *metadata)
{
	gboolean ret;
	xmlNode* root;
	xmlDoc *doc;
	g_autoptr(AsXMLData) xdt = NULL;
	AsComponent *cpt;

	/* load the XML data */
	xdt = as_xmldata_new ();
	as_xmldata_initialize (xdt, AS_CURRENT_FORMAT_VERSION,
			       "C",
				NULL,
				NULL,
				NULL,
				0);

	doc = as_validator_open_xml_document (validator, xdt, metadata);
	if (doc == NULL)
		return FALSE;
	root = xmlDocGetRootElement (doc);

	ret = TRUE;
	if (g_strcmp0 ((gchar*) root->name, "component") == 0) {
		as_xmldata_set_format_style (xdt, AS_FORMAT_STYLE_METAINFO);
		cpt = as_validator_validate_component_node (validator, xdt, root);
		if (cpt != NULL)
			g_object_unref (cpt);
	} else if (g_strcmp0 ((gchar*) root->name, "components") == 0) {
		xmlNode *iter;
		const gchar *node_name;

		as_xmldata_set_format_style (xdt, AS_FORMAT_STYLE_COLLECTION);
		for (iter = root->children; iter != NULL; iter = iter->next) {
			/* discard spaces */
			if (iter->type != XML_ELEMENT_NODE)
				continue;
			node_name = (const gchar*) iter->name;
			if (g_strcmp0 (node_name, "component") == 0) {
				cpt = as_validator_validate_component_node (validator, xdt, iter);
				if (cpt != NULL)
					g_object_unref (cpt);
			} else {
				as_validator_add_issue (validator, iter,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_TAG_UNKNOWN,
							"Unknown tag found: %s",
							node_name);
				ret = FALSE;
			}
		}
	} else if (g_str_has_prefix ((gchar*) root->name, "application")) {
		as_validator_add_issue (validator, root,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_LEGACY,
					"The metainfo file uses an ancient version of the AppStream specification, which can not be validated. Please migrate it to version 0.6 (or higher).");
		ret = FALSE;
	} else {
		as_validator_add_issue (validator, root,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_UNKNOWN,
					"Unknown root tag found: '%s' - maybe not a metainfo document?",
					(gchar*) root->name);
		ret = FALSE;
	}

	xmlFreeDoc (doc);
	return ret;
}
예제 #17
0
/**
 * as_validator_validate_component_node:
 **/
static AsComponent*
as_validator_validate_component_node (AsValidator *validator, AsXMLData *xdt, xmlNode *root)
{
	xmlNode *iter;
	AsComponent *cpt;
	guint i;
	g_autofree gchar *metadata_license = NULL;
	g_autofree gchar *cpttype = NULL;
	g_autoptr(GHashTable) found_tags = NULL;
	g_auto(GStrv) cid_parts = NULL;
	const gchar *summary;
	const gchar *cid;
	AsParserMode mode;

	found_tags = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
	mode = as_xmldata_get_parser_mode (xdt);

	/* validate the resulting AsComponent for sanity */
	cpt = as_component_new ();
	as_xmldata_parse_component_node (xdt, root, cpt, NULL);
	as_validator_set_current_cpt (validator, cpt);

	/* check if component type is valid */
	cpttype = (gchar*) xmlGetProp (root, (xmlChar*) "type");
	if (cpttype != NULL) {
		if (as_component_kind_from_string (cpttype) == AS_COMPONENT_KIND_UNKNOWN) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_VALUE_WRONG,
						"Invalid component type found: %s",
						cpttype);
		}
	}

	/* validate the AppStream ID */
	cid = as_component_get_id (cpt);
	cid_parts = g_strsplit (cid, ".", 3);
	if (g_strv_length (cid_parts) != 3) {
		if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
			/* since the ID and .desktop-file-id are tied together, we can't make this an error for desktop apps */
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component ID is not a reverse domain-name. Please update the ID and that of the accompanying .desktop file to follow the latest version of the specifications and avoid future issues.");
		} else {
			/* anything which isn't a .desktop app should follow the schema though */
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component ID is no reverse domain-name.");
		}
	} else {
		/* some people just add random dots to their ID - check if we have an actual known TLD as first part, to be more certain that this is a reverse domain name
		 * (this issue happens quite often with old .desktop files) */
		if (!as_utils_is_tld (cid_parts[0])) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_INFO,
						AS_ISSUE_KIND_VALUE_WRONG,
						"The component ID might not follow the reverse domain-name schema (we do not know about the TLD '%s').", cid_parts[0]);
		}
	}

	/* validate characters in AppStream ID */
	for (i = 0; cid[i] != '\0'; i++) {
		/* check if we have a printable, alphanumeric ASCII character or a dot, hyphen or underscore */
		if ((!g_ascii_isalnum (cid[i])) &&
		    (cid[i] != '.') &&
		    (cid[i] != '-') &&
		    (cid[i] != '_')) {
			g_autofree gchar *c = NULL;
			c = g_utf8_substring (cid, i, i + 1);
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The component ID contains an invalid character: '%s'", c);
		}
	}



	for (iter = root->children; iter != NULL; iter = iter->next) {
		const gchar *node_name;
		g_autofree gchar *node_content = NULL;
		gboolean tag_valid = TRUE;
		/* discard spaces */
		if (iter->type != XML_ELEMENT_NODE)
			continue;
		node_name = (const gchar*) iter->name;
		node_content = (gchar*) xmlNodeGetContent (iter);

		if (g_strcmp0 (node_name, "id") == 0) {
			gchar *prop;
			prop = (gchar*) xmlGetProp (iter, (xmlChar*) "type");
			if (prop != NULL) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_INFO,
							AS_ISSUE_KIND_PROPERTY_INVALID,
							"The id tag for \"%s\" still contains a 'type' property, probably from an old conversion.",
							node_content);
			}
			g_free (prop);
			if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_DESKTOP_APP) {
				if (!g_str_has_suffix (node_content, ".desktop"))
					as_validator_add_issue (validator,
								AS_ISSUE_IMPORTANCE_WARNING,
								AS_ISSUE_KIND_VALUE_WRONG,
								"Component id belongs to a desktop-application, but does not resemble the .desktop file name: \"%s\"",
								node_content);
			}
		} else if (g_strcmp0 (node_name, "metadata_license") == 0) {
			metadata_license = g_strdup (node_content);
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "pkgname") == 0) {
			if (g_hash_table_contains (found_tags, node_name)) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_PEDANTIC,
							AS_ISSUE_KIND_TAG_DUPLICATED,
							"The tag 'pkgname' appears multiple times. You should evaluate creating a metapackage containing the data in order to avoid defining multiple package names per component.");
			}
		} else if (g_strcmp0 (node_name, "source_pkgname") == 0) {
			if (g_hash_table_contains (found_tags, node_name)) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_TAG_DUPLICATED,
							"The tag 'source_pkgname' appears multiple times.");
			}
		} else if (g_strcmp0 (node_name, "name") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "summary") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "description") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_description_tag (validator, iter, cpt, mode);
		} else if (g_strcmp0 (node_name, "icon") == 0) {
			gchar *prop;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if ((g_strcmp0 (prop, "cached") == 0) || (g_strcmp0 (prop, "stock") == 0)) {
				if (g_strrstr (node_content, "/") != NULL)
					as_validator_add_issue (validator,
								AS_ISSUE_IMPORTANCE_ERROR,
								AS_ISSUE_KIND_VALUE_WRONG,
								"Icons of type 'stock' or 'cached' must not contain a full or relative path to the icon.");
			}
			g_free (prop);
		} else if (g_strcmp0 (node_name, "url") == 0) {
			gchar *prop;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if (as_url_kind_from_string (prop) == AS_URL_KIND_UNKNOWN) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_PROPERTY_INVALID,
							"Invalid property for 'url' tag: \"%s\"",
							prop);
			}
			g_free (prop);
		} else if (g_strcmp0 (node_name, "categories") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "category", cpt);
		} else if (g_strcmp0 (node_name, "keywords") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "keyword", cpt);
		} else if (g_strcmp0 (node_name, "mimetypes") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "mimetype", cpt);
		} else if (g_strcmp0 (node_name, "provides") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "screenshots") == 0) {
			as_validator_check_children_quick (validator, iter, "screenshot", cpt);
		} else if (g_strcmp0 (node_name, "project_license") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "project_group") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "developer_name") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "compulsory_for_desktop") == 0) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
		} else if (g_strcmp0 (node_name, "releases") == 0) {
			as_validator_check_children_quick (validator, iter, "release", cpt);
		} else if ((g_strcmp0 (node_name, "languages") == 0) && (mode == AS_PARSER_MODE_DISTRO)) {
			as_validator_check_appear_once (validator, iter, found_tags, cpt);
			as_validator_check_children_quick (validator, iter, "lang", cpt);
		} else if ((g_strcmp0 (node_name, "translation") == 0) && (mode == AS_PARSER_MODE_UPSTREAM)) {
			g_autofree gchar *prop = NULL;
			AsTranslationKind trkind;
			prop = as_validator_check_type_property (validator, cpt, iter);
			trkind = as_translation_kind_from_string (prop);
			if (trkind == AS_TRANSLATION_KIND_UNKNOWN) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown type '%s' for <translation/> tag.", prop);
			}
		} else if (g_strcmp0 (node_name, "extends") == 0) {
		} else if (g_strcmp0 (node_name, "bundle") == 0) {
			g_autofree gchar *prop = NULL;
			prop = as_validator_check_type_property (validator, cpt, iter);
			if ((g_strcmp0 (prop, "limba") != 0) && (g_strcmp0 (prop, "flatpak") != 0)) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_ERROR,
							AS_ISSUE_KIND_VALUE_WRONG,
							"Unknown type '%s' for <bundle/> tag.", prop);
			}
		} else if (g_strcmp0 (node_name, "update_contact") == 0) {
			if (mode == AS_PARSER_MODE_DISTRO) {
				as_validator_add_issue (validator,
							AS_ISSUE_IMPORTANCE_WARNING,
							AS_ISSUE_KIND_TAG_NOT_ALLOWED,
							"The 'update_contact' tag should not be included in distro AppStream XML.");
			} else {
				as_validator_check_appear_once (validator, iter, found_tags, cpt);
			}
		} else if (g_strcmp0 (node_name, "metadata") == 0) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_PEDANTIC,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found custom metadata in <metadata/> tag. Use of this tag is common, but should be avoided if possible.");
			tag_valid = FALSE;
		} else if (!g_str_has_prefix (node_name, "x-")) {
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_WARNING,
						AS_ISSUE_KIND_TAG_UNKNOWN,
						"Found invalid tag: '%s'. Non-standard tags must be prefixed with \"x-\".",
				node_name);
			tag_valid = FALSE;
		}

		if (tag_valid) {
			as_validator_check_content_empty (validator,
							node_content,
							node_name,
							AS_ISSUE_IMPORTANCE_WARNING,
							cpt);
		}
	}

	if (metadata_license == NULL) {
		if (mode == AS_PARSER_MODE_UPSTREAM)
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_MISSING,
						"The essential tag 'metadata_license' is missing.");
	}

	/* check if the summary is sane */
	summary = as_component_get_summary (cpt);
	if ((summary != NULL) && ((strstr (summary, "\n") != NULL) || (strstr (summary, "\t") != NULL))) {
		as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"The summary tag must not contain tabs or linebreaks.");
	}

	/* check if we have a description */
	if (as_str_empty (as_component_get_description (cpt))) {
		AsComponentKind cpt_kind;
		cpt_kind = as_component_get_kind (cpt);

		if ((cpt_kind == AS_COMPONENT_KIND_DESKTOP_APP) ||
			(cpt_kind == AS_COMPONENT_KIND_FONT)) {
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_TAG_MISSING,
					"The component is missing a long description. Components of this type must have a long description.");
		} else if (cpt_kind != AS_COMPONENT_KIND_GENERIC) {
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_INFO,
					AS_ISSUE_KIND_TAG_MISSING,
					"The component is missing a long description. It is recommended to add one.");
		}
	}

	/* validate font specific stuff */
	if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_FONT) {
		if (!g_str_has_suffix (as_component_get_id (cpt), ".font"))
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_ERROR,
					AS_ISSUE_KIND_VALUE_WRONG,
					"Components of type 'font' must have an AppStream ID with a '.font' suffix.");
		if (as_component_get_provided_for_kind (cpt, AS_PROVIDED_KIND_FONT) == NULL)
			as_validator_add_issue (validator,
					AS_ISSUE_IMPORTANCE_WARNING,
					AS_ISSUE_KIND_TAG_MISSING,
					"Type 'font' component, but no font information was provided via a provides/font tag.");
	}

	/* validate addon specific stuff */
	if (as_component_get_extends (cpt)->len > 0) {
		if (as_component_get_kind (cpt) != AS_COMPONENT_KIND_ADDON)
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_NOT_ALLOWED,
						"An 'extends' tag is specified, but the component is not an addon.");
	} else {
		if (as_component_get_kind (cpt) == AS_COMPONENT_KIND_ADDON)
			as_validator_add_issue (validator,
						AS_ISSUE_IMPORTANCE_ERROR,
						AS_ISSUE_KIND_TAG_MISSING,
						"The component is an addon, but no 'extends' tag was specified.");
	}

	as_validator_clear_current_cpt (validator);
	return cpt;
}