ubusd_obj.c File Reference

#include "ubusd.h"
#include "ubusd_obj.h"

Go to the source code of this file.

Functions
static void	ubus_unref_object_type (struct ubus_object_type *type)
static bool	ubus_create_obj_method (struct ubus_object_type *type, struct blob_attr *attr)
static struct ubus_object_type *	ubus_create_obj_type (struct blob_attr *sig)
static struct ubus_object_type *	ubus_get_obj_type (uint32_t obj_id)
struct ubus_object *	ubusd_create_object_internal (struct ubus_object_type *type, uint32_t id)
struct ubus_object *	ubusd_create_object (struct ubus_client *cl, struct blob_attr **attr)
void	ubus_subscribe (struct ubus_object *obj, struct ubus_object *target)
void	ubus_unsubscribe (struct ubus_subscription *s)
void	ubusd_free_object (struct ubus_object *obj)
static void __constructor	ubusd_obj_init (void)

Variables
struct avl_tree	obj_types
struct avl_tree	objects
struct avl_tree	path

Function Documentation

ubus_create_obj_method()

static bool ubus_create_obj_method ( struct ubus_object_type *  type, struct blob_attr *  attr  )

static

Definition at line 37 of file ubusd_obj.c.

{
        struct ubus_method *m;
        int bloblen = blob_raw_len(attr);
 
        m = calloc(1, sizeof(*m) + bloblen);
        if (!m)
                return false;
 
        list_add_tail(&m->list, &type->methods);
        memcpy(m->data, attr, bloblen);
        m->name = blobmsg_name(m->data);
 
        return true;
}

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ubus_create_obj_type()

static struct ubus_object_type* ubus_create_obj_type ( struct blob_attr *  sig )

static

Definition at line 53 of file ubusd_obj.c.

{
        struct ubus_object_type *type;
        struct blob_attr *pos;
        size_t rem;
 
        type = calloc(1, sizeof(*type));
        if (!type)
                return NULL;
 
        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;
}

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ubus_get_obj_type()

static struct ubus_object_type* ubus_get_obj_type ( uint32_t  obj_id )

static

Definition at line 89 of file ubusd_obj.c.

{
        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;
}

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ubus_subscribe()

void ubus_subscribe	(	struct ubus_object *	obj,
		struct ubus_object *	target
	)

Definition at line 172 of file ubusd_obj.c.

{
        struct ubus_subscription *s;
        bool first = list_empty(&target->subscribers);
 
        s = calloc(1, sizeof(*s));
        if (!s)
                return;
 
        s->subscriber = obj;
        s->target = target;
        list_add(&s->list, &target->subscribers);
        list_add(&s->target_list, &obj->target_list);
 
        if (first)
                ubus_notify_subscription(target);
}

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ubus_unref_object_type()

static void ubus_unref_object_type ( struct ubus_object_type *  type )

static

Definition at line 21 of file ubusd_obj.c.

{
        struct ubus_method *m, *tmp;
 
        if (--type->refcount > 0)
                return;
 
        list_for_each_entry_safe(m, tmp, &type->methods, list) {
                list_del(&m->list);
                free(m);
        }
 
        ubus_free_id(&obj_types, &type->id);
        free(type);
}

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ubus_unsubscribe()

void ubus_unsubscribe

(

struct ubus_subscription *

s

)

Definition at line 190 of file ubusd_obj.c.

{
        struct ubus_object *obj = s->target;
 
        list_del(&s->list);
        list_del(&s->target_list);
        free(s);
 
        if (list_empty(&obj->subscribers))
                ubus_notify_subscription(obj);
}

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ubusd_create_object()

struct ubus_object* ubusd_create_object	(	struct ubus_client *	cl,
		struct blob_attr **	attr
	)

Definition at line 129 of file ubusd_obj.c.

{
        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]);
 
        obj = ubusd_create_object_internal(type, 0);
        if (type)
                ubus_unref_object_type(type);
 
        if (!obj)
                return NULL;
 
        if (attr[UBUS_ATTR_OBJPATH]) {
                if (ubusd_acl_check(cl, blob_data(attr[UBUS_ATTR_OBJPATH]), NULL, UBUS_ACL_PUBLISH))
                        goto free;
 
                obj->path.key = strdup(blob_data(attr[UBUS_ATTR_OBJPATH]));
                if (!obj->path.key)
                        goto free;
 
                if (avl_insert(&path, &obj->path) != 0) {
                        free((void *) 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;
}

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ubusd_create_object_internal()

struct ubus_object* ubusd_create_object_internal	(	struct ubus_object_type *	type,
		uint32_t	id
	)

Definition at line 103 of file ubusd_obj.c.

{
        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);
        INIT_LIST_HEAD(&obj->subscribers);
        INIT_LIST_HEAD(&obj->target_list);
        if (type)
                type->refcount++;
 
        return obj;
 
error_free:
        free(obj);
        return NULL;
}

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ubusd_free_object()

void ubusd_free_object

(

struct ubus_object *

obj

)

Definition at line 202 of file ubusd_obj.c.

{
        struct ubus_subscription *s, *tmp;
 
        list_for_each_entry_safe(s, tmp, &obj->target_list, target_list) {
                ubus_unsubscribe(s);
        }
        list_for_each_entry_safe(s, tmp, &obj->subscribers, list) {
                ubus_notify_unsubscribe(s);
        }
 
        ubusd_event_cleanup_object(obj);
        if (obj->path.key) {
                ubusd_send_obj_event(obj, false);
                avl_delete(&path, &obj->path);
                free((void *) 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);
}

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ubusd_obj_init()

static void __constructor ubusd_obj_init ( void  )

static

Definition at line 227 of file ubusd_obj.c.

{
        ubus_init_id_tree(&objects);
        ubus_init_id_tree(&obj_types);
        ubus_init_string_tree(&path, false);
        ubusd_event_init();
        ubusd_acl_init();
        ubusd_monitor_init();
}

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Variable Documentation

obj_types

struct avl_tree obj_types

Definition at line 1 of file ubusd_obj.c.

objects

struct avl_tree objects

Definition at line 1 of file ubusd_obj.c.

path

struct avl_tree path

Definition at line 1 of file ubusd_obj.c.