int ds_sds_session_register_component_with_dependencies(struct ds_sds_session *session, const char *container_name, const char *component_id, const char *target_filename)
{
xmlNode *datastream = ds_sds_session_get_selected_datastream(session);
if (!datastream) {
return -1;
}
xmlNodePtr container = node_get_child_element(datastream, container_name);
if (!container) {
if (ds_sds_session_get_datastream_id(session) == NULL)
oscap_seterr(OSCAP_EFAMILY_XML, "No '%s' container element found in file '%s' in the first datastream.",
container_name, oscap_source_readable_origin(session->source));
else
oscap_seterr(OSCAP_EFAMILY_XML, "No '%s' container element found in file '%s' in datastream of id '%s'.",
container_name, oscap_source_readable_origin(session->source), ds_sds_session_get_datastream_id(session));
return -1;
}
int res = -1;
xmlNode *component_ref = containter_get_component_ref_by_id(container, component_id);
if (component_ref != NULL) {
if (target_filename == NULL) {
res = ds_sds_dump_component_ref(component_ref, session);
} else {
res = ds_sds_dump_component_ref_as(component_ref, session, "." , target_filename);
}
}
else {
oscap_seterr(OSCAP_EFAMILY_XML, "No '%s' component ref found in file '%s' in datastream of id '%s'.",
component_id, oscap_source_readable_origin(session->source), ds_sds_session_get_datastream_id(session));
return -1;
}
return res;
}
int ds_sds_dump_component_ref_as(const xmlNodePtr component_ref, struct ds_sds_session *session, const char* sub_dir, const char* relative_filepath)
{
char* cref_id = (char*)xmlGetProp(component_ref, BAD_CAST "id");
if (!cref_id)
{
oscap_seterr(OSCAP_EFAMILY_XML, "No or invalid id attribute on given component-ref.");
xmlFree(cref_id);
return -1;
}
char* xlink_href = (char*)xmlGetNsProp(component_ref, BAD_CAST "href", BAD_CAST xlink_ns_uri);
if (!xlink_href || strlen(xlink_href) < 2)
{
oscap_seterr(OSCAP_EFAMILY_XML, "No or invalid xlink:href attribute on given component-ref.");
xmlFree(cref_id);
xmlFree(xlink_href);
return -1;
}
assert(xlink_href[0] == '#');
const char* component_id = xlink_href + 1;
char* filename_cpy = oscap_sprintf("./%s", relative_filepath);
char* file_reldir = dirname(filename_cpy);
const char* target_filename_dirname = oscap_sprintf("%s/%s",sub_dir, file_reldir);
oscap_free(filename_cpy);
ds_sds_dump_component(component_id, session, target_filename_dirname, relative_filepath);
xmlNodePtr catalog = node_get_child_element(component_ref, "catalog");
if (catalog)
{
xmlNodePtr uri = catalog->children;
for (; uri != NULL; uri = uri->next)
{
if (uri->type != XML_ELEMENT_NODE)
continue;
if (strcmp((const char*)(uri->name), "uri") != 0)
continue;
char* name = (char*)xmlGetProp(uri, BAD_CAST "name");
if (!name)
{
oscap_seterr(OSCAP_EFAMILY_XML, "No 'name' attribute for a component referenced in the catalog of component '%s'.", component_id);
xmlFree(cref_id);
xmlFree(xlink_href);
oscap_free(target_filename_dirname);
return -1;
}
char* str_uri = (char*)xmlGetProp(uri, BAD_CAST "uri");
if (!str_uri || strlen(str_uri) < 2)
{
oscap_seterr(OSCAP_EFAMILY_XML, "No or invalid 'uri' attribute for a component referenced in the catalog of component '%s'.", component_id);
xmlFree(str_uri);
xmlFree(name);
xmlFree(cref_id);
xmlFree(xlink_href);
oscap_free(target_filename_dirname);
return -1;
}
// the pointer arithmetics simply skips the first character which is '#'
assert(str_uri[0] == '#');
xmlNodePtr cat_component_ref = ds_sds_find_component_ref(ds_sds_session_get_selected_datastream(session), str_uri + 1 * sizeof(char));
if (!cat_component_ref)
{
oscap_seterr(OSCAP_EFAMILY_XML, "component-ref with given id '%s' wasn't found in the document! We are looking for it because it's in the catalog of component '%s'.", str_uri + 1 * sizeof(char), component_id);
xmlFree(str_uri);
xmlFree(name);
xmlFree(cref_id);
xmlFree(xlink_href);
oscap_free(target_filename_dirname);
return -1;
}
xmlFree(str_uri);
if (ds_sds_dump_component_ref_as(cat_component_ref, session, target_filename_dirname, name) != 0)
{
xmlFree(name);
xmlFree(cref_id);
xmlFree(xlink_href);
oscap_free(target_filename_dirname);
return -1; // no need to call oscap_seterr here, it's already set
}
xmlFree(name);
}
}
oscap_free(target_filename_dirname);
xmlFree(cref_id);
xmlFree(xlink_href);
return 0;
}
