int ds_rds_session_register_component_source(struct ds_rds_session *session, const char *content_id, struct oscap_source *component)
{
if (!oscap_htable_add(session->component_sources, content_id, component)) {
oscap_seterr(OSCAP_EFAMILY_OSCAP, "Content '%s' has already been register with Result DataStream session: %s",
content_id, oscap_source_readable_origin(session->source));
return -1;
}
return 0;
}
int ds_sds_session_register_component_source(struct ds_sds_session *session, const char *relative_filepath, struct oscap_source *component)
{
if (!oscap_htable_add(session->component_sources, relative_filepath, component)) {
oscap_seterr(OSCAP_EFAMILY_OSCAP, "File %s has already been register with Source DataStream session: %s",
relative_filepath, oscap_source_readable_origin(session->source));
return -1;
}
return 0;
}
/**
* Put refine-rule into hash table with item_id as key. Refine-rules are with same key are merged.
* @param refine_rules_internal hash table
* @param new_rr refine-rule to add
* @param item_id key to hash table
*/
static void _add_refine_rule(struct oscap_htable* refine_rules_internal, const struct xccdf_refine_rule* new_rr, const char* item_id)
{
struct xccdf_refine_rule_internal* old = oscap_htable_get(refine_rules_internal, item_id);
if (old != NULL) { // modify refine-rule in hash-table
_merge_refine_rules(old, new_rr);
} else { // add new refine-rule to hash-table
struct xccdf_refine_rule_internal* new_internal_rr = _xccdf_refine_rule_internal_new_from_refine_rule(new_rr);
oscap_htable_add(refine_rules_internal, item_id, new_internal_rr);
}
}
int ds_rds_create(const char* sds_file, const char* xccdf_result_file, const char** oval_result_files, const char* target_file)
{
struct oscap_source *sds_source = oscap_source_new_from_file(sds_file);
struct oscap_source *xccdf_result_source = oscap_source_new_from_file(xccdf_result_file);
struct oscap_htable *oval_result_sources = oscap_htable_new();
int result = 0;
// this check is there to allow passing NULL instead of having to allocate
// an empty array
if (oval_result_files != NULL)
{
while (*oval_result_files != NULL)
{
struct oscap_source *oval_source = oscap_source_new_from_file(*oval_result_files);
if (oscap_source_get_xmlDoc(oval_source) == NULL) {
result = -1;
oscap_source_free(oval_source);
} else {
oscap_htable_add(oval_result_sources, *oval_result_files, oval_source);
}
oval_result_files++;
}
}
if (result == 0) {
struct oscap_source *target_rds = ds_rds_create_source(sds_source, xccdf_result_source, oval_result_sources, target_file);
result = target_rds == NULL;
if (result == 0) {
result = oscap_source_save_as(target_rds, NULL);
}
oscap_source_free(target_rds);
}
oscap_htable_free(oval_result_sources, (oscap_destruct_func) oscap_source_free);
oscap_source_free(sds_source);
oscap_source_free(xccdf_result_source);
return result;
}
static int ds_sds_compose_add_component_dependencies(xmlDocPtr doc, xmlNodePtr datastream, struct oscap_source *component_source, xmlNodePtr catalog, int component_type)
{
xmlDocPtr component_doc = oscap_source_get_xmlDoc(component_source);
if (component_doc == NULL)
{
return -1;
}
xmlXPathContextPtr xpathCtx = xmlXPathNewContext(component_doc);
if (xpathCtx == NULL)
{
oscap_seterr(OSCAP_EFAMILY_XML, "Error: unable to create new XPath context.");
return -1;
}
xmlXPathObjectPtr xpathObj = xmlXPathEvalExpression(
// we want robustness and support for future versions, this expression
// retrieves check-content-refs from any namespace
BAD_CAST _get_dep_xpath_for_type(component_type),
xpathCtx);
if (xpathObj == NULL)
{
oscap_seterr(OSCAP_EFAMILY_XML, "Error: Unable to evalute XPath expression.");
xmlXPathFreeContext(xpathCtx);
return -1;
}
xmlNsPtr cat_ns = xmlSearchNsByHref(doc, datastream, BAD_CAST cat_ns_uri);
xmlNodeSetPtr nodeset = xpathObj->nodesetval;
if (nodeset != NULL)
{
struct oscap_htable *exported = oscap_htable_new();
char* filepath_cpy = oscap_strdup(oscap_source_readable_origin(component_source));
const char* dir = dirname(filepath_cpy);
for (int i = 0; i < nodeset->nodeNr; i++)
{
xmlNodePtr node = nodeset->nodeTab[i];
if (node->type != XML_ELEMENT_NODE)
continue;
if (xmlHasProp(node, BAD_CAST "href"))
{
char* href = (char*)xmlGetProp(node, BAD_CAST "href");
if (oscap_htable_get(exported, href) != NULL) {
// This path has been already exported. Do not export duplicate.
xmlFree(href);
continue;
}
oscap_htable_add(exported, href, "");
if (oscap_acquire_url_is_supported(href)) {
/* If the referenced component is remote one, do not include
* it within the DataStream. Such component shall only be
* downloaded once the scan is run. */
xmlFree(href);
continue;
}
char* real_path = (strcmp(dir, "") == 0 || strcmp(dir, ".") == 0) ?
oscap_strdup(href) : oscap_sprintf("%s/%s", dir, href);
char* mangled_path = ds_sds_mangle_filepath(real_path);
char* cref_id = oscap_sprintf("scap_org.open-scap_cref_%s", mangled_path);
int counter = 0;
while (ds_sds_find_component_ref(datastream, cref_id) != NULL) {
// While the given component ID already exists in the document.
oscap_free(cref_id);
cref_id = oscap_sprintf("scap_org.open-scap_cref_%s%03d", mangled_path, counter++);
}
oscap_free(mangled_path);
char* uri = oscap_sprintf("#%s", cref_id);
// we don't want duplicated uri elements in the catalog
if (ds_sds_compose_catalog_has_uri(doc, catalog, uri) == 0)
{
oscap_free(uri);
oscap_free(cref_id);
oscap_free(real_path);
xmlFree(href);
continue;
}
int ret = ds_sds_compose_add_component_with_ref(doc, datastream, real_path, cref_id);
if (ret == 0) {
xmlNodePtr catalog_uri = xmlNewNode(cat_ns, BAD_CAST "uri");
xmlSetProp(catalog_uri, BAD_CAST "name", BAD_CAST href);
xmlSetProp(catalog_uri, BAD_CAST "uri", BAD_CAST uri);
xmlAddChild(catalog, catalog_uri);
}
oscap_free(cref_id);
oscap_free(uri);
oscap_free(real_path);
xmlFree(href);
if (ret < 0) {
// oscap_seterr has already been called
oscap_htable_free0(exported);
return -1;
}
}
}
oscap_htable_free0(exported);
oscap_free(filepath_cpy);
}
xmlXPathFreeObject(xpathObj);
xmlXPathFreeContext(xpathCtx);
return 0;
}