175 lines
3.4 KiB
C
175 lines
3.4 KiB
C
#include "ubusd.h"
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#include "ubusd_obj.h"
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struct avl_tree obj_types;
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struct avl_tree objects;
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struct avl_tree path;
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static void ubus_unref_object_type(struct ubus_object_type *type)
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{
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struct ubus_method *m;
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if (--type->refcount > 0)
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return;
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while (!list_empty(&type->methods)) {
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m = list_first_entry(&type->methods, struct ubus_method, list);
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list_del(&m->list);
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free(m);
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}
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ubus_free_id(&obj_types, &type->id);
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free(type);
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}
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static bool ubus_create_obj_method(struct ubus_object_type *type, struct blob_attr *attr)
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{
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struct ubus_method *m;
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int bloblen = blob_raw_len(attr);
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m = calloc(1, sizeof(*m) + bloblen);
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if (!m)
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return false;
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list_add(&m->list, &type->methods);
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memcpy(m->data, attr, bloblen);
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m->name = blobmsg_name(m->data);
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return true;
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}
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static struct ubus_object_type *ubus_create_obj_type(struct blob_attr *sig)
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{
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struct ubus_object_type *type;
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struct blob_attr *pos;
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int rem;
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type = calloc(1, sizeof(*type));
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type->refcount = 1;
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if (!ubus_alloc_id(&obj_types, &type->id, 0))
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goto error_free;
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INIT_LIST_HEAD(&type->methods);
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blob_for_each_attr(pos, sig, rem) {
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if (!blobmsg_check_attr(pos, true))
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goto error_unref;
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if (!ubus_create_obj_method(type, pos))
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goto error_unref;
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}
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return type;
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error_unref:
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ubus_unref_object_type(type);
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return NULL;
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error_free:
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free(type);
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return NULL;
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}
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static struct ubus_object_type *ubus_get_obj_type(uint32_t obj_id)
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{
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struct ubus_object_type *type;
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struct ubus_id *id;
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id = ubus_find_id(&obj_types, obj_id);
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if (!id)
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return NULL;
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type = container_of(id, struct ubus_object_type, id);
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type->refcount++;
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return type;
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}
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struct ubus_object *ubusd_create_object_internal(struct ubus_object_type *type, uint32_t id)
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{
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struct ubus_object *obj;
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obj = calloc(1, sizeof(*obj));
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if (!obj)
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return NULL;
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if (!ubus_alloc_id(&objects, &obj->id, id))
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goto error_free;
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obj->type = type;
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INIT_LIST_HEAD(&obj->list);
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INIT_LIST_HEAD(&obj->events);
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if (type)
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type->refcount++;
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return obj;
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error_free:
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free(obj);
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return NULL;
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}
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struct ubus_object *ubusd_create_object(struct ubus_client *cl, struct blob_attr **attr)
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{
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struct ubus_object *obj;
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struct ubus_object_type *type = NULL;
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if (attr[UBUS_ATTR_OBJTYPE])
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type = ubus_get_obj_type(blob_get_int32(attr[UBUS_ATTR_OBJTYPE]));
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else if (attr[UBUS_ATTR_SIGNATURE])
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type = ubus_create_obj_type(attr[UBUS_ATTR_SIGNATURE]);
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if (!!type ^ !!attr[UBUS_ATTR_OBJPATH])
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return NULL;
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obj = ubusd_create_object_internal(type, 0);
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if (type)
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ubus_unref_object_type(type);
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if (!obj)
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return NULL;
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if (attr[UBUS_ATTR_OBJPATH]) {
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obj->path.key = strdup(blob_data(attr[UBUS_ATTR_OBJPATH]));
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if (!obj->path.key)
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goto free;
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if (avl_insert(&path, &obj->path) != 0) {
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free(obj->path.key);
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obj->path.key = NULL;
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goto free;
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}
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}
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obj->client = cl;
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list_add(&obj->list, &cl->objects);
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return obj;
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free:
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ubusd_free_object(obj);
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return NULL;
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}
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void ubusd_free_object(struct ubus_object *obj)
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{
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ubusd_event_cleanup_object(obj);
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if (obj->path.key) {
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avl_delete(&path, &obj->path);
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free(obj->path.key);
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}
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if (!list_empty(&obj->list))
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list_del(&obj->list);
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ubus_free_id(&objects, &obj->id);
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if (obj->type)
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ubus_unref_object_type(obj->type);
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free(obj);
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}
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static void __init ubusd_obj_init(void)
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{
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ubus_init_id_tree(&objects);
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ubus_init_id_tree(&obj_types);
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ubus_init_string_tree(&path, false);
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ubusd_event_init();
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}
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