X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fubus.git;a=blobdiff_plain;f=ubusd_event.c;h=dfffdeeadd051394da7da1e99d21b0adece98a40;hp=da0aed80273ec89e505c102de5c098a418cd18da;hb=f9f602533a454891dc5a6f1df1bd0e624295ab1f;hpb=fa989780bda3ad10fcbb637390d59afe2b32ba81

diff --git a/ubusd_event.c b/ubusd_event.c
index da0aed8..dfffdee 100644
--- a/ubusd_event.c
+++ b/ubusd_event.c
@@ -1,41 +1,204 @@
 #include "ubusd.h"
 
 static struct avl_tree patterns;
+static LIST_HEAD(catch_all);
 static struct ubus_object *event_obj;
+static int event_seq = 0;
 
-struct event_pattern {
-	struct avl_node avl;
+enum evs_type {
+	EVS_PATTERN,
+	EVS_CATCHALL
+};
 
+struct event_source {
+	struct list_head list;
 	struct ubus_object *obj;
+	enum evs_type type;
+	union {
+		struct {
+			struct avl_node avl;
+		} pattern;
+		struct {
+			struct list_head list;
+		} catchall;
+	};
+};
+
+struct event_pattern {
+	struct event_source evs;
 	struct list_head list;
+};
+
+struct event_catchall {
+	struct event_source evs;
 
-	const char *path;
+	struct list_head list;
+	struct ubus_object *obj;
 };
 
-static void ubusd_delete_event_pattern(struct event_pattern *ev)
+static void ubusd_delete_event_source(struct event_source *evs)
 {
-	list_del(&ev->list);
-	avl_delete(&patterns, &ev->avl);
-	free(ev);
+	list_del(&evs->list);
+	switch (evs->type) {
+	case EVS_PATTERN:
+		avl_delete(&patterns, &evs->pattern.avl);
+		break;
+	case EVS_CATCHALL:
+		list_del(&evs->catchall.list);
+		break;
+	}
+	free(evs);
 }
 
 void ubusd_event_cleanup_object(struct ubus_object *obj)
 {
-	struct event_pattern *ev;
+	struct event_source *ev;
 
-	while (!list_empty(&obj->event_patterns)) {
-		ev = list_first_entry(&obj->event_patterns,
-				      struct event_pattern, list);
-		ubusd_delete_event_pattern(ev);
+	while (!list_empty(&obj->events)) {
+		ev = list_first_entry(&obj->events, struct event_source, list);
+		ubusd_delete_event_source(ev);
 	}
 }
 
-static int ubusd_event_recv(struct ubus_client *cl, const char *method, struct blob_attr *msg)
+enum {
+	EVREG_PATTERN,
+	EVREG_OBJECT,
+	EVREG_LAST,
+};
+
+static struct blobmsg_policy evr_policy[] = {
+	[EVREG_PATTERN] = { .name = "pattern", .type = BLOBMSG_TYPE_STRING },
+	[EVREG_OBJECT] = { .name = "object", .type = BLOBMSG_TYPE_INT32 },
+};
+
+
+static struct event_source *ubusd_alloc_event_source(struct ubus_object *obj, enum evs_type type, int datalen)
+{
+	struct event_source *evs;
+
+	evs = calloc(1, sizeof(*evs) + datalen);
+	list_add(&evs->list, &obj->events);
+	evs->obj = obj;
+	evs->type = type;
+	return evs;
+}
+
+static int ubusd_alloc_catchall(struct ubus_object *obj)
+{
+	struct event_source *evs;
+
+	evs = ubusd_alloc_event_source(obj, EVS_CATCHALL, 0);
+	list_add(&evs->catchall.list, &catch_all);
+
+	return 0;
+}
+
+static int ubusd_alloc_event_pattern(struct ubus_client *cl, struct blob_attr *msg)
+{
+	struct event_source *ev;
+	struct ubus_object *obj;
+	struct blob_attr *attr[EVREG_LAST];
+	const char *pattern;
+	uint32_t id;
+
+	blobmsg_parse(evr_policy, EVREG_LAST, attr, blob_data(msg), blob_len(msg));
+	if (!attr[EVREG_OBJECT])
+		return UBUS_STATUS_INVALID_ARGUMENT;
+
+	id = blobmsg_get_u32(attr[EVREG_OBJECT]);
+	if (id < UBUS_SYSTEM_OBJECT_MAX)
+		return UBUS_STATUS_PERMISSION_DENIED;
+
+	obj = ubusd_find_object(id);
+	if (!obj)
+		return UBUS_STATUS_NOT_FOUND;
+
+	if (obj->client != cl)
+		return UBUS_STATUS_PERMISSION_DENIED;
+
+	if (!attr[EVREG_PATTERN])
+		return ubusd_alloc_catchall(obj);
+
+	pattern = blobmsg_data(attr[EVREG_PATTERN]);
+	ev = ubusd_alloc_event_source(obj, EVS_PATTERN, strlen(pattern) + 1);
+	ev->pattern.avl.key = (void *) (ev + 1);
+	strcpy(ev->pattern.avl.key, pattern);
+	avl_insert(&patterns, &ev->pattern.avl);
+
+	return 0;
+}
+
+enum {
+	EVMSG_ID,
+	EVMSG_DATA,
+	EVMSG_LAST,
+};
+
+static struct blobmsg_policy ev_policy[] = {
+	[EVMSG_ID] = { .name = "id", .type = BLOBMSG_TYPE_STRING },
+	[EVMSG_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
+};
+
+static void ubusd_send_event_msg(struct ubus_msg_buf **ub, struct ubus_object *obj,
+				 const char *id, struct blob_attr *msg)
 {
-	fprintf(stderr, "event: call to method '%s'\n", method);
+	uint32_t *objid_ptr;
+
+	if (*ub) {
+		objid_ptr = blob_data(blob_data((*ub)->data));
+		*objid_ptr = htonl(obj->id.id);
+	} else {
+		blob_buf_init(&b, 0);
+		blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
+		blob_put_string(&b, UBUS_ATTR_METHOD, id);
+		blob_put(&b, UBUS_ATTR_DATA, blobmsg_data(msg), blobmsg_data_len(msg));
+
+		*ub = ubus_msg_new(b.head, blob_raw_len(b.head), true);
+
+		(*ub)->hdr.type = UBUS_MSG_INVOKE;
+		(*ub)->hdr.peer = 0;
+	}
+	(*ub)->hdr.seq = ++event_seq;
+	ubus_msg_send(obj->client, *ub, false);
+}
+
+static int ubusd_send_event(struct ubus_client *cl, struct blob_attr *msg)
+{
+	struct ubus_msg_buf *ub = NULL;
+	struct event_source *ev;
+	struct blob_attr *attr[EVMSG_LAST];
+	const char *id;
+
+	blobmsg_parse(ev_policy, EVMSG_LAST, attr, blob_data(msg), blob_len(msg));
+	if (!attr[EVMSG_ID] || !attr[EVMSG_DATA])
+		return UBUS_STATUS_INVALID_ARGUMENT;
+
+	id = blobmsg_data(attr[EVMSG_ID]);
+	list_for_each_entry(ev, &catch_all, catchall.list) {
+		/* do not loop back events */
+		if (ev->obj->client == cl)
+			continue;
+
+		ubusd_send_event_msg(&ub, ev->obj, id, attr[EVMSG_DATA]);
+	}
+
+	if (ub)
+		ubus_msg_free(ub);
+
 	return 0;
 }
 
+static int ubusd_event_recv(struct ubus_client *cl, const char *method, struct blob_attr *msg)
+{
+	if (!strcmp(method, "register"))
+		return ubusd_alloc_event_pattern(cl, msg);
+
+	if (!strcmp(method, "send"))
+		return ubusd_send_event(cl, msg);
+
+	return UBUS_STATUS_INVALID_COMMAND;
+}
+
 void ubusd_event_init(void)
 {
 	ubus_init_string_tree(&patterns, true);