+/*
+ * Copyright (C) 2011-2014 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 <arpa/inet.h>
+#include <unistd.h>
+
#include "ubusd.h"
struct blob_buf b;
static struct ubus_msg_buf *retmsg;
static int *retmsg_data;
+static struct avl_tree clients;
static struct blob_attr *attrbuf[UBUS_ATTR_MAX];
[UBUS_ATTR_OBJPATH] = { .type = BLOB_ATTR_STRING },
[UBUS_ATTR_OBJID] = { .type = BLOB_ATTR_INT32 },
[UBUS_ATTR_STATUS] = { .type = BLOB_ATTR_INT32 },
+ [UBUS_ATTR_METHOD] = { .type = BLOB_ATTR_STRING },
+ [UBUS_ATTR_USER] = { .type = BLOB_ATTR_STRING },
+ [UBUS_ATTR_GROUP] = { .type = BLOB_ATTR_STRING },
};
struct blob_attr **ubus_parse_msg(struct blob_attr *msg)
return attrbuf;
}
+static void ubus_msg_close_fd(struct ubus_msg_buf *ub)
+{
+ if (ub->fd < 0)
+ return;
+
+ close(ub->fd);
+ ub->fd = -1;
+}
+
static void ubus_msg_init(struct ubus_msg_buf *ub, uint8_t type, uint16_t seq, uint32_t peer)
{
ub->hdr.version = 0;
{
struct ubus_msg_buf *new;
- new = ubus_msg_new(b.head, blob_raw_len(b.head), shared);
+ new = ubus_msg_from_blob(shared);
if (!new)
return NULL;
return new;
}
-bool ubusd_send_hello(struct ubus_client *cl)
+void
+ubus_proto_send_msg_from_blob(struct ubus_client *cl, struct ubus_msg_buf *ub,
+ uint8_t type)
+{
+ ub = ubus_reply_from_blob(ub, true);
+ if (!ub)
+ return;
+
+ ub->hdr.type = type;
+ ubus_msg_send(cl, ub, true);
+}
+
+static bool ubusd_send_hello(struct ubus_client *cl)
{
struct ubus_msg_buf *ub;
blob_put_int32(&b, UBUS_ATTR_OBJTYPE, obj->type->id.id);
ubusd_free_object(obj);
+ ubus_proto_send_msg_from_blob(cl, ub, UBUS_MSG_DATA);
- ub = ubus_reply_from_blob(ub, true);
- if (!ub)
- return UBUS_STATUS_NO_DATA;
-
- ubus_msg_send(cl, ub, true);
return 0;
}
if (attr[UBUS_ATTR_SIGNATURE])
blob_put_int32(&b, UBUS_ATTR_OBJTYPE, obj->type->id.id);
- ub = ubus_reply_from_blob(ub, true);
- if (!ub)
- return UBUS_STATUS_NO_DATA;
-
- ubus_msg_send(cl, ub, true);
+ ubus_proto_send_msg_from_blob(cl, ub, UBUS_MSG_DATA);
return 0;
}
static void ubusd_send_obj(struct ubus_client *cl, struct ubus_msg_buf *ub, struct ubus_object *obj)
{
struct ubus_method *m;
+ int cnt = 0;
void *s;
blob_buf_init(&b, 0);
- if (obj->path.key)
- blob_put_string(&b, UBUS_ATTR_OBJPATH, obj->path.key);
+ blob_put_string(&b, UBUS_ATTR_OBJPATH, obj->path.key);
blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
blob_put_int32(&b, UBUS_ATTR_OBJTYPE, obj->type->id.id);
s = blob_nest_start(&b, UBUS_ATTR_SIGNATURE);
- list_for_each_entry(m, &obj->type->methods, list)
- blob_put(&b, blob_id(m->data), blob_data(m->data), blob_len(m->data));
+ list_for_each_entry(m, &obj->type->methods, list) {
+ if (!ubusd_acl_check(cl, obj->path.key, blobmsg_name(m->data), UBUS_ACL_ACCESS)) {
+ blobmsg_add_blob(&b, m->data);
+ cnt++;
+ }
+ }
blob_nest_end(&b, s);
- ub = ubus_reply_from_blob(ub, true);
- if (!ub)
- return;
-
- ubus_msg_send(cl, ub, true);
+ if (cnt)
+ ubus_proto_send_msg_from_blob(cl, ub, UBUS_MSG_DATA);
}
static int ubusd_handle_lookup(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
{
struct ubus_object *obj;
char *objpath;
- bool wildcard = false;
bool found = false;
int len;
}
objpath[--len] = 0;
- wildcard = true;
obj = avl_find_ge_element(&path, objpath, obj, path);
if (!obj)
return 0;
}
+static void
+ubusd_forward_invoke(struct ubus_client *cl, struct ubus_object *obj,
+ const char *method, struct ubus_msg_buf *ub,
+ struct blob_attr *data)
+{
+ blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
+ blob_put_string(&b, UBUS_ATTR_METHOD, method);
+ if (cl->user)
+ blob_put_string(&b, UBUS_ATTR_USER, cl->user);
+ if (cl->group)
+ blob_put_string(&b, UBUS_ATTR_GROUP, cl->group);
+ if (data)
+ blob_put(&b, UBUS_ATTR_DATA, blob_data(data), blob_len(data));
+
+ ubus_proto_send_msg_from_blob(obj->client, ub, UBUS_MSG_INVOKE);
+}
+
static int ubusd_handle_invoke(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
{
struct ubus_object *obj = NULL;
method = blob_data(attr[UBUS_ATTR_METHOD]);
+ if (ubusd_acl_check(cl, obj->path.key, method, UBUS_ACL_ACCESS))
+ return UBUS_STATUS_NOT_FOUND;
+
if (!obj->client)
- return obj->recv_msg(cl, method, attr[UBUS_ATTR_DATA]);
+ return obj->recv_msg(cl, ub, method, attr[UBUS_ATTR_DATA]);
+ ub->hdr.peer = cl->id.id;
blob_buf_init(&b, 0);
- blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
- blob_put_string(&b, UBUS_ATTR_METHOD, method);
- if (attr[UBUS_ATTR_DATA])
- blob_put(&b, UBUS_ATTR_DATA, blob_data(attr[UBUS_ATTR_DATA]),
- blob_len(attr[UBUS_ATTR_DATA]));
+ ubusd_forward_invoke(cl, obj, method, ub, attr[UBUS_ATTR_DATA]);
ubus_msg_free(ub);
- ub = ubus_reply_from_blob(ub, true);
- if (!ub)
- return UBUS_STATUS_NO_DATA;
+ return -1;
+}
+
+static int ubusd_handle_notify(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj = NULL;
+ struct ubus_subscription *s;
+ struct ubus_id *id;
+ const char *method;
+ bool no_reply = false;
+ void *c;
+
+ if (!attr[UBUS_ATTR_METHOD] || !attr[UBUS_ATTR_OBJID])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (attr[UBUS_ATTR_NO_REPLY])
+ no_reply = blob_get_int8(attr[UBUS_ATTR_NO_REPLY]);
+
+ id = ubus_find_id(&objects, blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!id)
+ return UBUS_STATUS_NOT_FOUND;
+
+ obj = container_of(id, struct ubus_object, id);
+ if (obj->client != cl)
+ return UBUS_STATUS_PERMISSION_DENIED;
+
+ if (!no_reply) {
+ blob_buf_init(&b, 0);
+ blob_put_int32(&b, UBUS_ATTR_OBJID, id->id);
+ c = blob_nest_start(&b, UBUS_ATTR_SUBSCRIBERS);
+ list_for_each_entry(s, &obj->subscribers, list) {
+ blob_put_int32(&b, 0, s->subscriber->id.id);
+ }
+ blob_nest_end(&b, c);
+ blob_put_int32(&b, UBUS_ATTR_STATUS, 0);
+ ubus_proto_send_msg_from_blob(cl, ub, UBUS_MSG_STATUS);
+ }
- ub->hdr.type = UBUS_MSG_INVOKE;
ub->hdr.peer = cl->id.id;
- ubus_msg_send(obj->client, ub, true);
+ method = blob_data(attr[UBUS_ATTR_METHOD]);
+ list_for_each_entry(s, &obj->subscribers, list) {
+ blob_buf_init(&b, 0);
+ if (no_reply)
+ blob_put_int8(&b, UBUS_ATTR_NO_REPLY, 1);
+ ubusd_forward_invoke(cl, s->subscriber, method, ub, attr[UBUS_ATTR_DATA]);
+ }
+ ubus_msg_free(ub);
return -1;
}
+static struct ubus_client *ubusd_get_client_by_id(uint32_t id)
+{
+ struct ubus_id *clid;
+
+ clid = ubus_find_id(&clients, id);
+ if (!clid)
+ return NULL;
+
+ return container_of(clid, struct ubus_client, id);
+}
+
static int ubusd_handle_response(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
{
struct ubus_object *obj;
return -1;
}
+static int ubusd_handle_add_watch(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj, *target;
+
+ if (!attr[UBUS_ATTR_OBJID] || !attr[UBUS_ATTR_TARGET])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ obj = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!obj)
+ return UBUS_STATUS_NOT_FOUND;
+
+ if (cl != obj->client)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ target = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_TARGET]));
+ if (!target)
+ return UBUS_STATUS_NOT_FOUND;
+
+ if (cl == target->client)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ if (!target->path.key) {
+ if (strcmp(target->client->user, cl->user) && strcmp(target->client->group, cl->group))
+ return UBUS_STATUS_NOT_FOUND;
+ } else if (ubusd_acl_check(cl, target->path.key, NULL, UBUS_ACL_SUBSCRIBE)) {
+ return UBUS_STATUS_NOT_FOUND;
+ }
+
+ ubus_subscribe(obj, target);
+ return 0;
+}
+
+static int ubusd_handle_remove_watch(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
+{
+ struct ubus_object *obj;
+ struct ubus_subscription *s;
+ uint32_t id;
+
+ if (!attr[UBUS_ATTR_OBJID] || !attr[UBUS_ATTR_TARGET])
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ obj = ubusd_find_object(blob_get_u32(attr[UBUS_ATTR_OBJID]));
+ if (!obj)
+ return UBUS_STATUS_NOT_FOUND;
+
+ if (cl != obj->client)
+ return UBUS_STATUS_INVALID_ARGUMENT;
+
+ id = blob_get_u32(attr[UBUS_ATTR_TARGET]);
+ list_for_each_entry(s, &obj->target_list, target_list) {
+ if (s->target->id.id != id)
+ continue;
+
+ ubus_unsubscribe(s);
+ return 0;
+ }
+
+ return UBUS_STATUS_NOT_FOUND;
+}
+
static const ubus_cmd_cb handlers[__UBUS_MSG_LAST] = {
[UBUS_MSG_PING] = ubusd_send_pong,
[UBUS_MSG_ADD_OBJECT] = ubusd_handle_add_object,
[UBUS_MSG_INVOKE] = ubusd_handle_invoke,
[UBUS_MSG_STATUS] = ubusd_handle_response,
[UBUS_MSG_DATA] = ubusd_handle_response,
+ [UBUS_MSG_SUBSCRIBE] = ubusd_handle_add_watch,
+ [UBUS_MSG_UNSUBSCRIBE] = ubusd_handle_remove_watch,
+ [UBUS_MSG_NOTIFY] = ubusd_handle_notify,
};
-void ubusd_receive_message(struct ubus_client *cl, struct ubus_msg_buf *ub)
+void ubusd_proto_receive_message(struct ubus_client *cl, struct ubus_msg_buf *ub)
{
ubus_cmd_cb cb = NULL;
int ret;
if (ub->hdr.type < __UBUS_MSG_LAST)
cb = handlers[ub->hdr.type];
+ if (ub->hdr.type != UBUS_MSG_STATUS)
+ ubus_msg_close_fd(ub);
+
if (cb)
ret = cb(cl, ub, ubus_parse_msg(ub->data));
else
ubus_msg_send(cl, retmsg, false);
}
-static void __init ubusd_proto_init(void)
+struct ubus_client *ubusd_proto_new_client(int fd, uloop_fd_handler cb)
{
+ struct ubus_client *cl;
+
+ cl = calloc(1, sizeof(*cl));
+ if (!cl)
+ return NULL;
+
+ if (ubusd_acl_init_client(cl, fd))
+ goto free;
+
+ INIT_LIST_HEAD(&cl->objects);
+ cl->sock.fd = fd;
+ cl->sock.cb = cb;
+ cl->pending_msg_fd = -1;
+
+ if (!ubus_alloc_id(&clients, &cl->id, 0))
+ goto free;
+
+ if (!ubusd_send_hello(cl))
+ goto delete;
+
+ return cl;
+
+delete:
+ ubus_free_id(&clients, &cl->id);
+free:
+ free(cl);
+ return NULL;
+}
+
+void ubusd_proto_free_client(struct ubus_client *cl)
+{
+ struct ubus_object *obj;
+
+ while (!list_empty(&cl->objects)) {
+ obj = list_first_entry(&cl->objects, struct ubus_object, list);
+ ubusd_free_object(obj);
+ }
+
+ ubus_free_id(&clients, &cl->id);
+}
+
+void ubus_notify_subscription(struct ubus_object *obj)
+{
+ bool active = !list_empty(&obj->subscribers);
+ struct ubus_msg_buf *ub;
+
+ blob_buf_init(&b, 0);
+ blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
+ blob_put_int8(&b, UBUS_ATTR_ACTIVE, active);
+
+ ub = ubus_msg_from_blob(false);
+ if (!ub)
+ return;
+
+ ubus_msg_init(ub, UBUS_MSG_NOTIFY, ++obj->invoke_seq, 0);
+ ubus_msg_send(obj->client, ub, true);
+}
+
+void ubus_notify_unsubscribe(struct ubus_subscription *s)
+{
+ struct ubus_msg_buf *ub;
+
+ blob_buf_init(&b, 0);
+ blob_put_int32(&b, UBUS_ATTR_OBJID, s->subscriber->id.id);
+ blob_put_int32(&b, UBUS_ATTR_TARGET, s->target->id.id);
+
+ ub = ubus_msg_from_blob(false);
+ if (ub != NULL) {
+ ubus_msg_init(ub, UBUS_MSG_UNSUBSCRIBE, ++s->subscriber->invoke_seq, 0);
+ ubus_msg_send(s->subscriber->client, ub, true);
+ }
+
+ ubus_unsubscribe(s);
+}
+
+static void __constructor ubusd_proto_init(void)
+{
+ ubus_init_id_tree(&clients);
+
blob_buf_init(&b, 0);
blob_put_int32(&b, UBUS_ATTR_STATUS, 0);
projects / project / ubus.git / blobdiff