3 static struct avl_tree patterns;
4 static LIST_HEAD(catch_all);
5 static struct ubus_object *event_obj;
13 struct list_head list;
14 struct ubus_object *obj;
21 struct list_head list;
26 struct event_pattern {
27 struct event_source evs;
28 struct list_head list;
31 struct event_catchall {
32 struct event_source evs;
34 struct list_head list;
35 struct ubus_object *obj;
38 static void ubusd_delete_event_source(struct event_source *evs)
43 avl_delete(&patterns, &evs->pattern.avl);
46 list_del(&evs->catchall.list);
52 void ubusd_event_cleanup_object(struct ubus_object *obj)
54 struct event_source *ev;
56 while (!list_empty(&obj->events)) {
57 ev = list_first_entry(&obj->events, struct event_source, list);
58 ubusd_delete_event_source(ev);
68 static struct blobmsg_policy ev_policy[] = {
69 [EVMSG_PATTERN] = { .name = "pattern", .type = BLOBMSG_TYPE_STRING },
70 [EVMSG_OBJECT] = { .name = "object", .type = BLOBMSG_TYPE_INT32 },
74 static struct event_source *ubusd_alloc_event_source(struct ubus_object *obj, enum evs_type type, int datalen)
76 struct event_source *evs;
78 evs = calloc(1, sizeof(*evs) + datalen);
79 list_add(&evs->list, &obj->events);
85 static int ubusd_alloc_catchall(struct ubus_object *obj)
87 struct event_source *evs;
89 evs = ubusd_alloc_event_source(obj, EVS_CATCHALL, 0);
90 list_add(&evs->catchall.list, &catch_all);
95 static int ubusd_alloc_event_pattern(struct ubus_client *cl, struct blob_attr *msg)
97 struct event_source *ev;
98 struct ubus_object *obj;
99 struct blob_attr *attr[EVMSG_LAST];
103 blobmsg_parse(ev_policy, EVMSG_LAST, attr, blob_data(msg), blob_len(msg));
104 if (!attr[EVMSG_OBJECT])
105 return UBUS_STATUS_INVALID_ARGUMENT;
107 id = blobmsg_get_u32(attr[EVMSG_OBJECT]);
108 if (id < UBUS_SYSTEM_OBJECT_MAX)
109 return UBUS_STATUS_PERMISSION_DENIED;
111 obj = ubusd_find_object(id);
113 return UBUS_STATUS_NOT_FOUND;
115 if (obj->client != cl)
116 return UBUS_STATUS_PERMISSION_DENIED;
118 if (!attr[EVMSG_PATTERN])
119 return ubusd_alloc_catchall(obj);
121 pattern = blobmsg_data(attr[EVMSG_PATTERN]);
122 ev = ubusd_alloc_event_source(obj, EVS_PATTERN, strlen(pattern) + 1);
123 ev->pattern.avl.key = (void *) (ev + 1);
124 strcpy(ev->pattern.avl.key, pattern);
125 avl_insert(&patterns, &ev->pattern.avl);
130 static int ubusd_event_recv(struct ubus_client *cl, const char *method, struct blob_attr *msg)
132 if (!strcmp(method, "register"))
133 return ubusd_alloc_event_pattern(cl, msg);
135 return UBUS_STATUS_INVALID_COMMAND;
138 void ubusd_event_init(void)
140 ubus_init_string_tree(&patterns, true);
141 event_obj = ubusd_create_object_internal(NULL, UBUS_SYSTEM_OBJECT_EVENT);
142 event_obj->recv_msg = ubusd_event_recv;