libubus: split out some code into separate source files

[project/ubus.git] / libubus-obj.c

diff --git a/libubus-obj.c b/libubus-obj.c
new file mode 100644 (file)
index 0000000..532a7fa
--- /dev/null
+++ b/libubus-obj.c
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2011-2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "libubus.h"
+#include "libubus-internal.h"
+
+void __hidden ubus_process_invoke(struct ubus_context *ctx, struct ubus_msghdr *hdr)
+{
+       struct blob_attr **attrbuf;
+       struct ubus_request_data req;
+       struct ubus_object *obj;
+       int method;
+       int ret = 0;
+
+       req.peer = hdr->peer;
+       req.seq = hdr->seq;
+       attrbuf = ubus_parse_msg(hdr->data);
+
+       if (!attrbuf[UBUS_ATTR_OBJID])
+               return;
+
+       req.object = blob_get_u32(attrbuf[UBUS_ATTR_OBJID]);
+
+       if (!attrbuf[UBUS_ATTR_METHOD]) {
+               ret = UBUS_STATUS_INVALID_ARGUMENT;
+               goto send;
+       }
+
+       obj = avl_find_element(&ctx->objects, &req.object, obj, avl);
+       if (!obj) {
+               ret = UBUS_STATUS_NOT_FOUND;
+               goto send;
+       }
+
+       for (method = 0; method < obj->n_methods; method++)
+               if (!obj->methods[method].name ||
+                   !strcmp(obj->methods[method].name,
+                           blob_data(attrbuf[UBUS_ATTR_METHOD])))
+                       goto found;
+
+       /* not found */
+       ret = UBUS_STATUS_METHOD_NOT_FOUND;
+       goto send;
+
+found:
+       ret = obj->methods[method].handler(ctx, obj, &req,
+                                          blob_data(attrbuf[UBUS_ATTR_METHOD]),
+                                          attrbuf[UBUS_ATTR_DATA]);
+       if (req.deferred)
+               return;
+
+send:
+       ubus_complete_deferred_request(ctx, &req, ret);
+}
+
+static void ubus_add_object_cb(struct ubus_request *req, int type, struct blob_attr *msg)
+{
+       struct ubus_object *obj = req->priv;
+       struct blob_attr **attrbuf = ubus_parse_msg(msg);
+
+       if (!attrbuf[UBUS_ATTR_OBJID])
+               return;
+
+       obj->id = blob_get_u32(attrbuf[UBUS_ATTR_OBJID]);
+
+       if (attrbuf[UBUS_ATTR_OBJTYPE])
+               obj->type->id = blob_get_u32(attrbuf[UBUS_ATTR_OBJTYPE]);
+
+       obj->avl.key = &obj->id;
+       avl_insert(&req->ctx->objects, &obj->avl);
+}
+
+static void ubus_push_method_data(const struct ubus_method *m)
+{
+       void *mtbl;
+       int i;
+
+       mtbl = blobmsg_open_table(&b, m->name);
+
+       for (i = 0; i < m->n_policy; i++)
+               blobmsg_add_u32(&b, m->policy[i].name, m->policy[i].type);
+
+       blobmsg_close_table(&b, mtbl);
+}
+
+static bool ubus_push_object_type(const struct ubus_object_type *type)
+{
+       void *s;
+       int i;
+
+       s = blob_nest_start(&b, UBUS_ATTR_SIGNATURE);
+
+       for (i = 0; i < type->n_methods; i++)
+               ubus_push_method_data(&type->methods[i]);
+
+       blob_nest_end(&b, s);
+
+       return true;
+}
+
+int ubus_add_object(struct ubus_context *ctx, struct ubus_object *obj)
+{
+       struct ubus_request req;
+       int ret;
+
+       blob_buf_init(&b, 0);
+
+       if (obj->name && obj->type) {
+               blob_put_string(&b, UBUS_ATTR_OBJPATH, obj->name);
+
+               if (obj->type->id)
+                       blob_put_int32(&b, UBUS_ATTR_OBJTYPE, obj->type->id);
+               else if (!ubus_push_object_type(obj->type))
+                       return UBUS_STATUS_INVALID_ARGUMENT;
+       }
+
+       if (ubus_start_request(ctx, &req, b.head, UBUS_MSG_ADD_OBJECT, 0) < 0)
+               return UBUS_STATUS_INVALID_ARGUMENT;
+
+       req.raw_data_cb = ubus_add_object_cb;
+       req.priv = obj;
+       ret = ubus_complete_request(ctx, &req, 0);
+       if (ret)
+               return ret;
+
+       if (!obj->id)
+               return UBUS_STATUS_NO_DATA;
+
+       return 0;
+}
+
+static void ubus_remove_object_cb(struct ubus_request *req, int type, struct blob_attr *msg)
+{
+       struct ubus_object *obj = req->priv;
+       struct blob_attr **attrbuf = ubus_parse_msg(msg);
+
+       if (!attrbuf[UBUS_ATTR_OBJID])
+               return;
+
+       obj->id = 0;
+
+       if (attrbuf[UBUS_ATTR_OBJTYPE] && obj->type)
+               obj->type->id = 0;
+
+       avl_delete(&req->ctx->objects, &obj->avl);
+}
+
+int ubus_remove_object(struct ubus_context *ctx, struct ubus_object *obj)
+{
+       struct ubus_request req;
+       int ret;
+
+       blob_buf_init(&b, 0);
+       blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id);
+
+       if (ubus_start_request(ctx, &req, b.head, UBUS_MSG_REMOVE_OBJECT, 0) < 0)
+               return UBUS_STATUS_INVALID_ARGUMENT;
+
+       req.raw_data_cb = ubus_remove_object_cb;
+       req.priv = obj;
+       ret = ubus_complete_request(ctx, &req, 0);
+       if (ret)
+               return ret;
+
+       if (obj->id)
+               return UBUS_STATUS_NO_DATA;
+
+       return 0;
+}