ubusd.h

   1 /*
   2  * Copyright (C) 2011-2014 Felix Fietkau <nbd@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef __UBUSD_H
  15 #define __UBUSD_H
  16
  17 #include <libubox/list.h>
  18 #include <libubox/uloop.h>
  19 #include <libubox/blobmsg.h>
  20 #include "ubus_common.h"
  21 #include "ubusd_id.h"
  22 #include "ubusd_obj.h"
  23 #include "ubusmsg.h"
  24 #include "ubusd_acl.h"
  25
  26 #define UBUSD_CLIENT_BACKLOG    32
  27 #define UBUS_OBJ_HASH_BITS      4
  28
  29 extern struct blob_buf b;
  30
  31 struct ubus_msg_buf {
  32         uint32_t refcount; /* ~0: uses external data buffer */
  33         struct ubus_msghdr hdr;
  34         struct blob_attr *data;
  35         int fd;
  36         int len;
  37 };
  38
  39 struct ubus_client {
  40         struct ubus_id id;
  41         struct uloop_fd sock;
  42         struct blob_buf b;
  43
  44         uid_t uid;
  45         gid_t gid;
  46         char *user;
  47         char *group;
  48
  49         struct list_head objects;
  50
  51         struct ubus_msg_buf *tx_queue[UBUSD_CLIENT_BACKLOG];
  52         unsigned int txq_cur, txq_tail, txq_ofs;
  53
  54         struct ubus_msg_buf *pending_msg;
  55         struct ubus_msg_buf *retmsg;
  56         int pending_msg_offset;
  57         int pending_msg_fd;
  58         struct {
  59                 struct ubus_msghdr hdr;
  60                 struct blob_attr data;
  61         } hdrbuf;
  62 };
  63
  64 struct ubus_path {
  65         struct list_head list;
  66         const char name[];
  67 };
  68
  69 extern const char *ubusd_acl_dir;
  70
  71 struct ubus_msg_buf *ubus_msg_new(void *data, int len, bool shared);
  72 void ubus_msg_send(struct ubus_client *cl, struct ubus_msg_buf *ub);
  73 ssize_t ubus_msg_writev(int fd, struct ubus_msg_buf *ub, size_t offset);
  74 void ubus_msg_free(struct ubus_msg_buf *ub);
  75 struct blob_attr **ubus_parse_msg(struct blob_attr *msg);
  76
  77 struct ubus_client *ubusd_proto_new_client(int fd, uloop_fd_handler cb);
  78 void ubusd_proto_receive_message(struct ubus_client *cl, struct ubus_msg_buf *ub);
  79 void ubusd_proto_free_client(struct ubus_client *cl);
  80 void ubus_proto_send_msg_from_blob(struct ubus_client *cl, struct ubus_msg_buf *ub,
  81                                    uint8_t type);
  82
  83 typedef struct ubus_msg_buf *(*event_fill_cb)(void *priv, const char *id);
  84 void ubusd_event_init(void);
  85 void ubusd_event_cleanup_object(struct ubus_object *obj);
  86 void ubusd_send_obj_event(struct ubus_object *obj, bool add);
  87 int ubusd_send_event(struct ubus_client *cl, const char *id,
  88                      event_fill_cb fill_cb, void *cb_priv);
  89
  90 void ubusd_acl_init(void);
  91
  92 void ubusd_monitor_init(void);
  93 void ubusd_monitor_message(struct ubus_client *cl, struct ubus_msg_buf *ub, bool send);
  94 void ubusd_monitor_disconnect(struct ubus_client *cl);
  95
  96 #endif