X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fubus.git;a=blobdiff_plain;f=libubus.c;h=c1a1010cc0ba788b734ee74e2c0669f092914872;hp=9e93aede871c71c65a52793093cde209714d2ba2;hb=36b1a80b075203c650a6612f1ef45674210fb7a6;hpb=8321f8c523c9bf5f476f9c5b06c955d0ce3a0f80

diff --git a/libubus.c b/libubus.c
index 9e93aed..c1a1010 100644
--- a/libubus.c
+++ b/libubus.c
@@ -24,6 +24,7 @@ const char *__ubus_strerror[__UBUS_STATUS_LAST] = {
 	[UBUS_STATUS_OK] = "Success",
 	[UBUS_STATUS_INVALID_COMMAND] = "Invalid command",
 	[UBUS_STATUS_INVALID_ARGUMENT] = "Invalid argument",
+	[UBUS_STATUS_METHOD_NOT_FOUND] = "Method not found",
 	[UBUS_STATUS_NOT_FOUND] = "Not found",
 	[UBUS_STATUS_NO_DATA] = "No response",
 };
@@ -34,6 +35,7 @@ static const struct blob_attr_info ubus_policy[UBUS_ATTR_MAX] = {
 	[UBUS_ATTR_STATUS] = { .type = BLOB_ATTR_INT32 },
 	[UBUS_ATTR_OBJID] = { .type = BLOB_ATTR_INT32 },
 	[UBUS_ATTR_OBJPATH] = { .type = BLOB_ATTR_STRING },
+	[UBUS_ATTR_METHOD] = { .type = BLOB_ATTR_STRING },
 };
 static struct blob_attr *attrbuf[UBUS_ATTR_MAX];
 
@@ -43,6 +45,16 @@ struct ubus_pending_data {
 	struct blob_attr data[];
 };
 
+static int ubus_cmp_id(const void *k1, const void *k2, void *ptr)
+{
+	const uint32_t *id1 = k1, *id2 = k2;
+
+	if (*id1 < *id2)
+		return -1;
+	else
+		return *id1 > *id2;
+}
+
 struct blob_attr **ubus_parse_msg(struct blob_attr *msg)
 {
 	blob_parse(msg, attrbuf, ubus_policy, UBUS_ATTR_MAX);
@@ -66,23 +78,19 @@ out:
 	return err;
 }
 
-int ubus_start_request(struct ubus_context *ctx, struct ubus_request *req,
-		       struct blob_attr *msg, int cmd, uint32_t peer)
+static int ubus_send_msg(struct ubus_context *ctx, uint32_t seq,
+			 struct blob_attr *msg, int cmd, uint32_t peer)
 {
 	struct ubus_msghdr hdr;
 	struct iovec iov[2] = {
 		STATIC_IOV(hdr)
 	};
 
-	memset(req, 0, sizeof(*req));
 	hdr.version = 0;
 	hdr.type = cmd;
-	hdr.seq = ++ctx->request_seq;
+	hdr.seq = seq;
 	hdr.peer = peer;
 
-	req->peer = hdr.peer;
-	req->seq = hdr.seq;
-
 	if (!msg) {
 		blob_buf_init(&b, 0);
 		msg = b.head;
@@ -90,12 +98,23 @@ int ubus_start_request(struct ubus_context *ctx, struct ubus_request *req,
 
 	iov[1].iov_base = (char *) msg;
 	iov[1].iov_len = blob_raw_len(msg);
-	INIT_LIST_HEAD(&req->list);
-	INIT_LIST_HEAD(&req->pending);
 
 	return writev(ctx->sock.fd, iov, 2);
 }
 
+static int ubus_start_request(struct ubus_context *ctx, struct ubus_request *req,
+			      struct blob_attr *msg, int cmd, uint32_t peer)
+{
+	memset(req, 0, sizeof(*req));
+
+	INIT_LIST_HEAD(&req->list);
+	INIT_LIST_HEAD(&req->pending);
+	req->ctx = ctx;
+	req->peer = peer;
+	req->seq = ++ctx->request_seq;
+	return ubus_send_msg(ctx, req->seq, msg, cmd, peer);
+}
+
 static bool recv_retry(int fd, struct iovec *iov, bool wait)
 {
 	int bytes;
@@ -164,6 +183,20 @@ static bool ubus_get_status(struct ubus_msghdr *hdr, int *ret)
 	return true;
 }
 
+static void req_data_cb(struct ubus_request *req, int type, struct blob_attr *data)
+{
+	struct blob_attr **attr;
+
+	if (req->raw_data_cb)
+		req->raw_data_cb(req, type, data);
+
+	if (!req->data_cb)
+		return;
+
+	attr = ubus_parse_msg(data);
+	req->data_cb(req, type, attr[UBUS_ATTR_DATA]);
+}
+
 static void ubus_process_req_data(struct ubus_request *req)
 {
 	struct ubus_pending_data *data;
@@ -172,7 +205,8 @@ static void ubus_process_req_data(struct ubus_request *req)
 		data = list_first_entry(&req->pending,
 			struct ubus_pending_data, list);
 		list_del(&data->list);
-		req->data_cb(req, data->type, data->data);
+		if (!req->cancelled)
+			req_data_cb(req, data->type, data->data);
 		free(data);
 	}
 }
@@ -212,7 +246,7 @@ static void ubus_req_data(struct ubus_request *req, struct ubus_msghdr *hdr)
 
 	if (!req->blocked) {
 		req->blocked = true;
-		req->data_cb(req, hdr->type, hdr->data);
+		req_data_cb(req, hdr->type, hdr->data);
 		ubus_process_req_data(req);
 		req->blocked = false;
 
@@ -232,26 +266,94 @@ static void ubus_req_data(struct ubus_request *req, struct ubus_msghdr *hdr)
 	list_add(&data->list, &req->pending);
 }
 
-static void ubus_process_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+static struct ubus_request *ubus_find_request(struct ubus_context *ctx, uint32_t seq, uint32_t peer)
 {
 	struct ubus_request *req;
 
 	list_for_each_entry(req, &ctx->requests, list) {
-		if (hdr->seq != req->seq || hdr->peer != req->peer)
+		if (seq != req->seq || peer != req->peer)
 			continue;
 
-		switch(hdr->type) {
-		case UBUS_MSG_STATUS:
-			ubus_process_req_status(req, hdr);
-			return;
-		case UBUS_MSG_DATA:
-			if (req->data_cb)
-				ubus_req_data(req, hdr);
-			break;
-		default:
-			DPRINTF("unknown message type: %d\n", hdr->type);
+		return req;
+	}
+	return NULL;
+}
+
+static void ubus_process_invoke(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+{
+	struct ubus_request_data req;
+	struct ubus_object *obj;
+	uint32_t objid = 0;
+	int method;
+	int ret = 0;
+
+	ubus_parse_msg(hdr->data);
+
+	if (!attrbuf[UBUS_ATTR_OBJID])
+		return;
+
+	objid = blob_get_int32(attrbuf[UBUS_ATTR_OBJID]);
+
+	if (!attrbuf[UBUS_ATTR_METHOD]) {
+		ret = UBUS_STATUS_INVALID_ARGUMENT;
+		goto send;
+	}
+
+	obj = avl_find_element(&ctx->objects, &objid, obj, avl);
+	if (!obj) {
+		ret = UBUS_STATUS_NOT_FOUND;
+		goto send;
+	}
+
+	for (method = 0; method < obj->n_methods; method++)
+		if (!strcmp(obj->methods[method].name,
+		            blob_data(attrbuf[UBUS_ATTR_METHOD])))
+			goto found;
+
+	/* not found */
+	ret = UBUS_STATUS_METHOD_NOT_FOUND;
+	goto send;
+
+found:
+	req.object = objid;
+	req.peer = hdr->peer;
+	req.seq = hdr->seq;
+	ret = obj->methods[method].handler(ctx, obj, &req,
+					   obj->methods[method].name,
+					   attrbuf[UBUS_ATTR_DATA]);
+
+send:
+	blob_buf_init(&b, 0);
+	blob_put_int32(&b, UBUS_ATTR_STATUS, ret);
+	blob_put_int32(&b, UBUS_ATTR_OBJID, objid);
+	ubus_send_msg(ctx, hdr->seq, b.head, UBUS_MSG_STATUS, hdr->peer);
+}
+
+static void ubus_process_msg(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+{
+	struct ubus_request *req;
+
+	switch(hdr->type) {
+	case UBUS_MSG_STATUS:
+		req = ubus_find_request(ctx, hdr->seq, hdr->peer);
+		if (!req)
 			break;
-		}
+
+		ubus_process_req_status(req, hdr);
+		break;
+
+	case UBUS_MSG_DATA:
+		req = ubus_find_request(ctx, hdr->seq, hdr->peer);
+		if (req && (req->data_cb || req->raw_data_cb))
+			ubus_req_data(req, hdr);
+		break;
+
+	case UBUS_MSG_INVOKE:
+		ubus_process_invoke(ctx, hdr);
+		break;
+	default:
+		DPRINTF("unknown message type: %d\n", hdr->type);
+		break;
 	}
 }
 
@@ -260,6 +362,8 @@ void ubus_abort_request(struct ubus_context *ctx, struct ubus_request *req)
 	if (!list_empty(&req->list))
 		return;
 
+	req->cancelled = true;
+	ubus_process_req_data(req);
 	list_del(&req->list);
 }
 
@@ -278,6 +382,9 @@ static void ubus_handle_data(struct uloop_fd *u, unsigned int events)
 
 	while (get_next_msg(ctx, false))
 		ubus_process_msg(ctx, hdr);
+
+	if (u->eof)
+		ctx->connection_lost(ctx);
 }
 
 int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req)
@@ -291,6 +398,9 @@ int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req)
 		if (req->status_msg)
 			return req->status_code;
 
+		if (req->cancelled)
+			return UBUS_STATUS_NO_DATA;
+
 		if (!get_next_msg(ctx, true))
 			return UBUS_STATUS_NO_DATA;
 
@@ -301,12 +411,11 @@ int ubus_complete_request(struct ubus_context *ctx, struct ubus_request *req)
 		case UBUS_MSG_STATUS:
 			return ubus_process_req_status(req, hdr);
 		case UBUS_MSG_DATA:
-			if (req->data_cb)
+			if (req->data_cb || req->raw_data_cb)
 				ubus_req_data(req, hdr);
 			continue;
 		default:
-			DPRINTF("unknown message type: %d\n", hdr->type);
-			continue;
+			goto skip;
 		}
 
 skip:
@@ -314,37 +423,99 @@ skip:
 	}
 }
 
-void ubus_invoke_path_async(struct ubus_context *ctx, const char *path, const char *method,
-                       struct blob_attr *msg, struct ubus_request *req)
+struct ubus_lookup_request {
+	struct ubus_request req;
+	ubus_lookup_handler_t cb;
+};
+
+static void ubus_lookup_cb(struct ubus_request *ureq, int type, struct blob_attr *msg)
 {
+	struct ubus_lookup_request *req;
+	struct ubus_object_data obj;
+	struct blob_attr **attr;
+
+	req = container_of(ureq, struct ubus_lookup_request, req);
+	attr = ubus_parse_msg(msg);
+
+	if (!attr[UBUS_ATTR_OBJID] || !attr[UBUS_ATTR_OBJPATH] ||
+	    !attr[UBUS_ATTR_OBJTYPE])
+		return;
+
+	memset(&obj, 0, sizeof(obj));
+	obj.id = blob_get_int32(attr[UBUS_ATTR_OBJID]);
+	obj.path = blob_data(attr[UBUS_ATTR_OBJPATH]);
+	obj.type_id = blob_get_int32(attr[UBUS_ATTR_OBJTYPE]);
+	obj.signature = attr[UBUS_ATTR_SIGNATURE];
+	req->cb(ureq->ctx, &obj, ureq->priv);
+}
+
+int ubus_lookup(struct ubus_context *ctx, const char *path,
+		ubus_lookup_handler_t cb, void *priv)
+{
+	struct ubus_lookup_request lookup;
+
 	blob_buf_init(&b, 0);
-	blob_put_string(&b, UBUS_ATTR_OBJPATH, path);
-	blob_put_string(&b, UBUS_ATTR_METHOD, method);
-	blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
+	if (path)
+		blob_put_string(&b, UBUS_ATTR_OBJPATH, path);
+	ubus_start_request(ctx, &lookup.req, b.head, UBUS_MSG_LOOKUP, 0);
+	lookup.req.raw_data_cb = ubus_lookup_cb;
+	lookup.req.priv = priv;
+	lookup.cb = cb;
+	return ubus_complete_request(ctx, &lookup.req);
+}
+
+static void ubus_lookup_id_cb(struct ubus_request *req, int type, struct blob_attr *msg)
+{
+	struct blob_attr **attr;
+	uint32_t *id = req->priv;
+
+	attr = ubus_parse_msg(msg);
+
+	if (!attr[UBUS_ATTR_OBJID])
+		return;
 
-	ubus_start_request(ctx, req, b.head, UBUS_MSG_INVOKE, 0);
+	*id = blob_get_int32(attr[UBUS_ATTR_OBJID]);
 }
 
-int ubus_invoke_path(struct ubus_context *ctx, const char *path, const char *method,
-                struct blob_attr *msg, ubus_data_handler_t cb, void *priv)
+int ubus_lookup_id(struct ubus_context *ctx, const char *path, uint32_t *id)
 {
 	struct ubus_request req;
 
-	ubus_invoke_path_async(ctx, path, method, msg, &req);
-	req.data_cb = cb;
-	req.priv = priv;
+	blob_buf_init(&b, 0);
+	if (path)
+		blob_put_string(&b, UBUS_ATTR_OBJPATH, path);
+	ubus_start_request(ctx, &req, b.head, UBUS_MSG_LOOKUP, 0);
+	req.raw_data_cb = ubus_lookup_id_cb;
+	req.priv = id;
+
 	return ubus_complete_request(ctx, &req);
 }
 
+int ubus_send_reply(struct ubus_context *ctx, struct ubus_request_data *req,
+		    struct blob_attr *msg)
+{
+	int ret;
+
+	blob_buf_init(&b, 0);
+	blob_put_int32(&b, UBUS_ATTR_OBJID, req->object);
+	blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
+	ret = ubus_send_msg(ctx, req->seq, b.head, UBUS_MSG_DATA, req->peer);
+	if (ret < 0)
+		return UBUS_STATUS_NO_DATA;
+
+	return 0;
+}
+
 void ubus_invoke_async(struct ubus_context *ctx, uint32_t obj, const char *method,
                        struct blob_attr *msg, struct ubus_request *req)
 {
 	blob_buf_init(&b, 0);
 	blob_put_int32(&b, UBUS_ATTR_OBJID, obj);
 	blob_put_string(&b, UBUS_ATTR_METHOD, method);
-	blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
+	if (msg)
+		blob_put(&b, UBUS_ATTR_DATA, blob_data(msg), blob_len(msg));
 
-	ubus_start_request(ctx, req, b.head, UBUS_MSG_INVOKE, 0);
+	ubus_start_request(ctx, req, b.head, UBUS_MSG_INVOKE, obj);
 }
 
 int ubus_invoke(struct ubus_context *ctx, uint32_t obj, const char *method,
@@ -371,6 +542,9 @@ static void ubus_publish_cb(struct ubus_request *req, int type, struct blob_attr
 
 	if (attrbuf[UBUS_ATTR_OBJTYPE])
 		obj->type->id = blob_get_int32(attrbuf[UBUS_ATTR_OBJTYPE]);
+
+	obj->avl.key = &obj->id;
+	avl_insert(&req->ctx->objects, &obj->avl);
 }
 
 static bool ubus_push_table_data(const struct ubus_signature **sig, int *rem, bool array)
@@ -441,8 +615,6 @@ int ubus_publish(struct ubus_context *ctx, struct ubus_object *obj)
 
 	blob_buf_init(&b, 0);
 	blob_put_string(&b, UBUS_ATTR_OBJPATH, obj->name);
-	if (obj->parent)
-		blob_put_int32(&b, UBUS_ATTR_OBJID, obj->parent->id);
 
 	if (obj->type->id)
 		blob_put_int32(&b, UBUS_ATTR_OBJTYPE, obj->type->id);
@@ -450,7 +622,7 @@ int ubus_publish(struct ubus_context *ctx, struct ubus_object *obj)
 		return UBUS_STATUS_INVALID_ARGUMENT;
 
 	ubus_start_request(ctx, &req, b.head, UBUS_MSG_PUBLISH, 0);
-	req.data_cb = ubus_publish_cb;
+	req.raw_data_cb = ubus_publish_cb;
 	req.priv = obj;
 	ret = ubus_complete_request(ctx, &req);
 	if (ret)
@@ -462,6 +634,12 @@ int ubus_publish(struct ubus_context *ctx, struct ubus_object *obj)
 	return 0;
 }
 
+void ubus_default_connection_lost(struct ubus_context *ctx)
+{
+	if (ctx->sock.registered)
+		uloop_end();
+}
+
 struct ubus_context *ubus_connect(const char *path)
 {
 	struct ubus_context *ctx;
@@ -513,6 +691,11 @@ struct ubus_context *ubus_connect(const char *path)
 	ctx->local_id = hdr.hdr.peer;
 	free(buf);
 
+	ctx->connection_lost = ubus_default_connection_lost;
+
+	INIT_LIST_HEAD(&ctx->requests);
+	avl_init(&ctx->objects, ubus_cmp_id, false, NULL);
+
 	if (!ctx->local_id) {
 		DPRINTF("Failed to get local peer id\n");
 		goto error_close;