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#include "ubusd.h"
#include "ubusd_obj.h"
struct avl_tree obj_types;
struct avl_tree objects;
struct avl_tree path;
static void ubus_unref_object_type(struct ubus_object_type *type)
{
struct ubus_method *m;
if (--type->refcount > 0)
return;
while (!list_empty(&type->methods)) {
m = list_first_entry(&type->methods, struct ubus_method, list);
list_del(&m->list);
free(m);
}
ubus_free_id(&obj_types, &type->id);
free(type);
}
static bool ubus_create_obj_method(struct ubus_object_type *type, struct blob_attr *attr)
{
struct ubus_method *m;
int bloblen = blob_raw_len(attr);
m = calloc(1, sizeof(*m) + bloblen);
if (!m)
return false;
list_add(&m->list, &type->methods);
memcpy(m->data, attr, bloblen);
m->name = blobmsg_name(m->data);
return true;
}
static struct ubus_object_type *ubus_create_obj_type(struct blob_attr *sig)
{
struct ubus_object_type *type;
struct blob_attr *pos;
int rem;
type = calloc(1, sizeof(*type));
type->refcount = 1;
if (!ubus_alloc_id(&obj_types, &type->id, 0))
goto error_free;
INIT_LIST_HEAD(&type->methods);
blob_for_each_attr(pos, sig, rem) {
if (!blobmsg_check_attr(pos, true))
goto error_unref;
if (!ubus_create_obj_method(type, pos))
goto error_unref;
}
return type;
error_unref:
ubus_unref_object_type(type);
return NULL;
error_free:
free(type);
return NULL;
}
static struct ubus_object_type *ubus_get_obj_type(uint32_t obj_id)
{
struct ubus_object_type *type;
struct ubus_id *id;
id = ubus_find_id(&obj_types, obj_id);
if (!id)
return NULL;
type = container_of(id, struct ubus_object_type, id);
type->refcount++;
return type;
}
struct ubus_object *ubusd_create_object_internal(struct ubus_object_type *type, uint32_t id)
{
struct ubus_object *obj;
obj = calloc(1, sizeof(*obj));
if (!obj)
return NULL;
if (!ubus_alloc_id(&objects, &obj->id, id))
goto error_free;
obj->type = type;
INIT_LIST_HEAD(&obj->list);
INIT_LIST_HEAD(&obj->events);
if (type)
type->refcount++;
return obj;
error_free:
free(obj);
return NULL;
}
struct ubus_object *ubusd_create_object(struct ubus_client *cl, struct blob_attr **attr)
{
struct ubus_object *obj;
struct ubus_object_type *type = NULL;
if (attr[UBUS_ATTR_OBJTYPE])
type = ubus_get_obj_type(blob_get_u32(attr[UBUS_ATTR_OBJTYPE]));
else if (attr[UBUS_ATTR_SIGNATURE])
type = ubus_create_obj_type(attr[UBUS_ATTR_SIGNATURE]);
if (!!type ^ !!attr[UBUS_ATTR_OBJPATH])
return NULL;
obj = ubusd_create_object_internal(type, 0);
if (type)
ubus_unref_object_type(type);
if (!obj)
return NULL;
if (attr[UBUS_ATTR_OBJPATH]) {
obj->path.key = strdup(blob_data(attr[UBUS_ATTR_OBJPATH]));
if (!obj->path.key)
goto free;
if (avl_insert(&path, &obj->path) != 0) {
free(obj->path.key);
obj->path.key = NULL;
goto free;
}
ubusd_send_obj_event(obj, true);
}
obj->client = cl;
list_add(&obj->list, &cl->objects);
return obj;
free:
ubusd_free_object(obj);
return NULL;
}
void ubusd_free_object(struct ubus_object *obj)
{
ubusd_event_cleanup_object(obj);
if (obj->path.key) {
ubusd_send_obj_event(obj, false);
avl_delete(&path, &obj->path);
free(obj->path.key);
}
if (!list_empty(&obj->list))
list_del(&obj->list);
ubus_free_id(&objects, &obj->id);
if (obj->type)
ubus_unref_object_type(obj->type);
free(obj);
}
static void __init ubusd_obj_init(void)
{
ubus_init_id_tree(&objects);
ubus_init_id_tree(&obj_types);
ubus_init_string_tree(&path, false);
ubusd_event_init();
}
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