ubus.c

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #define _GNU_SOURCE
  15
  16 #include <arpa/inet.h>
  17 #include <string.h>
  18 #include <stdio.h>
  19
  20 #include "netifd.h"
  21 #include "interface.h"
  22 #include "proto.h"
  23 #include "ubus.h"
  24 #include "system.h"
  25
  26 static struct ubus_context *ctx = NULL;
  27 static struct blob_buf b;
  28 static struct netifd_fd ubus_fd;
  29 static const char *ubus_path;
  30
  31 /* global object */
  32
  33 static int
  34 netifd_handle_restart(struct ubus_context *ctx, struct ubus_object *obj,
  35                       struct ubus_request_data *req, const char *method,
  36                       struct blob_attr *msg)
  37 {
  38         netifd_restart();
  39         return 0;
  40 }
  41
  42 static int
  43 netifd_handle_reload(struct ubus_context *ctx, struct ubus_object *obj,
  44                      struct ubus_request_data *req, const char *method,
  45                      struct blob_attr *msg)
  46 {
  47         netifd_reload();
  48         return 0;
  49 }
  50
  51 enum {
  52         HR_TARGET,
  53         HR_V6,
  54         __HR_MAX
  55 };
  56
  57 static const struct blobmsg_policy route_policy[__HR_MAX] = {
  58         [HR_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
  59         [HR_V6] = { .name = "v6", .type = BLOBMSG_TYPE_BOOL },
  60 };
  61
  62 static int
  63 netifd_add_host_route(struct ubus_context *ctx, struct ubus_object *obj,
  64                       struct ubus_request_data *req, const char *method,
  65                       struct blob_attr *msg)
  66 {
  67         struct blob_attr *tb[__HR_MAX];
  68         struct interface *iface;
  69         union if_addr a;
  70         bool v6 = false;
  71
  72         blobmsg_parse(route_policy, __HR_MAX, tb, blob_data(msg), blob_len(msg));
  73         if (!tb[HR_TARGET])
  74                 return UBUS_STATUS_INVALID_ARGUMENT;
  75
  76         if (tb[HR_V6])
  77                 v6 = blobmsg_get_bool(tb[HR_V6]);
  78
  79         memset(&a, 0, sizeof(a));
  80         if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(tb[HR_TARGET]), &a))
  81                 return UBUS_STATUS_INVALID_ARGUMENT;
  82
  83
  84         iface = interface_ip_add_target_route(&a, v6);
  85         if (!iface)
  86                 return UBUS_STATUS_NOT_FOUND;
  87
  88         blob_buf_init(&b, 0);
  89         blobmsg_add_string(&b, "interface", iface->name);
  90         ubus_send_reply(ctx, req, b.head);
  91
  92         return 0;
  93 }
  94
  95 static int
  96 netifd_get_proto_handlers(struct ubus_context *ctx, struct ubus_object *obj,
  97                           struct ubus_request_data *req, const char *method,
  98                           struct blob_attr *msg)
  99 {
 100         blob_buf_init(&b, 0);
 101         proto_dump_handlers(&b);
 102         ubus_send_reply(ctx, req, b.head);
 103
 104         return 0;
 105 }
 106
 107 static struct ubus_method main_object_methods[] = {
 108         { .name = "restart", .handler = netifd_handle_restart },
 109         { .name = "reload", .handler = netifd_handle_reload },
 110         UBUS_METHOD("add_host_route", netifd_add_host_route, route_policy),
 111         { .name = "get_proto_handlers", .handler = netifd_get_proto_handlers },
 112 };
 113
 114 static struct ubus_object_type main_object_type =
 115         UBUS_OBJECT_TYPE("netifd", main_object_methods);
 116
 117 static struct ubus_object main_object = {
 118         .name = "network",
 119         .type = &main_object_type,
 120         .methods = main_object_methods,
 121         .n_methods = ARRAY_SIZE(main_object_methods),
 122 };
 123
 124 enum {
 125         DEV_NAME,
 126         __DEV_MAX,
 127 };
 128
 129 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
 130         [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 131 };
 132
 133 static int
 134 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
 135                   struct ubus_request_data *req, const char *method,
 136                   struct blob_attr *msg)
 137 {
 138         struct device *dev = NULL;
 139         struct blob_attr *tb[__DEV_MAX];
 140
 141         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 142
 143         if (tb[DEV_NAME]) {
 144                 dev = device_get(blobmsg_data(tb[DEV_NAME]), false);
 145                 if (!dev)
 146                         return UBUS_STATUS_INVALID_ARGUMENT;
 147         }
 148
 149         blob_buf_init(&b, 0);
 150         device_dump_status(&b, dev);
 151         ubus_send_reply(ctx, req, b.head);
 152
 153         return 0;
 154 }
 155
 156 enum {
 157         ALIAS_ATTR_ALIAS,
 158         ALIAS_ATTR_DEV,
 159         __ALIAS_ATTR_MAX,
 160 };
 161
 162 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
 163         [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
 164         [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
 165 };
 166
 167 static int
 168 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
 169                     struct ubus_request_data *req, const char *method,
 170                     struct blob_attr *msg)
 171 {
 172         struct device *dev = NULL;
 173         struct blob_attr *tb[__ALIAS_ATTR_MAX];
 174         struct blob_attr *cur;
 175         int rem;
 176
 177         blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
 178
 179         if (!tb[ALIAS_ATTR_ALIAS])
 180                 return UBUS_STATUS_INVALID_ARGUMENT;
 181
 182         if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
 183                 dev = device_get(blobmsg_data(cur), true);
 184                 if (!dev)
 185                         return UBUS_STATUS_NOT_FOUND;
 186         }
 187
 188         blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
 189                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 190                         goto error;
 191
 192                 if (!blobmsg_check_attr(cur, NULL))
 193                         goto error;
 194
 195                 alias_notify_device(blobmsg_data(cur), dev);
 196         }
 197         return 0;
 198
 199 error:
 200         device_free_unused(dev);
 201         return UBUS_STATUS_INVALID_ARGUMENT;
 202 }
 203
 204 enum {
 205         DEV_STATE_NAME,
 206         DEV_STATE_DEFER,
 207         __DEV_STATE_MAX,
 208 };
 209
 210 static const struct blobmsg_policy dev_state_policy[__DEV_STATE_MAX] = {
 211         [DEV_STATE_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 212         [DEV_STATE_DEFER] = { .name = "defer", .type = BLOBMSG_TYPE_BOOL },
 213 };
 214
 215 static int
 216 netifd_handle_set_state(struct ubus_context *ctx, struct ubus_object *obj,
 217                         struct ubus_request_data *req, const char *method,
 218                         struct blob_attr *msg)
 219 {
 220         struct device *dev = NULL;
 221         struct blob_attr *tb[__DEV_STATE_MAX];
 222         struct blob_attr *cur;
 223
 224         blobmsg_parse(dev_state_policy, __DEV_STATE_MAX, tb, blob_data(msg), blob_len(msg));
 225
 226         cur = tb[DEV_STATE_NAME];
 227         if (!cur)
 228                 return UBUS_STATUS_INVALID_ARGUMENT;
 229
 230         dev = device_get(blobmsg_data(cur), false);
 231         if (!dev)
 232                 return UBUS_STATUS_NOT_FOUND;
 233
 234         cur = tb[DEV_STATE_DEFER];
 235         if (cur)
 236                 device_set_deferred(dev, !!blobmsg_get_u8(cur));
 237
 238         return 0;
 239 }
 240
 241 static struct ubus_method dev_object_methods[] = {
 242         UBUS_METHOD("status", netifd_dev_status, dev_policy),
 243         UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
 244         UBUS_METHOD("set_state", netifd_handle_set_state, dev_state_policy),
 245 };
 246
 247 static struct ubus_object_type dev_object_type =
 248         UBUS_OBJECT_TYPE("device", dev_object_methods);
 249
 250 static struct ubus_object dev_object = {
 251         .name = "network.device",
 252         .type = &dev_object_type,
 253         .methods = dev_object_methods,
 254         .n_methods = ARRAY_SIZE(dev_object_methods),
 255 };
 256
 257 static void
 258 netifd_ubus_add_fd(void)
 259 {
 260         ubus_add_uloop(ctx);
 261         ubus_fd.fd = ctx->sock.fd;
 262         netifd_fd_add(&ubus_fd);
 263 }
 264
 265 static void
 266 netifd_ubus_reconnect_timer(struct uloop_timeout *timeout)
 267 {
 268         static struct uloop_timeout retry = {
 269                 .cb = netifd_ubus_reconnect_timer,
 270         };
 271         int t = 2;
 272
 273         if (ubus_reconnect(ctx, ubus_path) != 0) {
 274                 DPRINTF("failed to reconnect, trying again in %d seconds\n", t);
 275                 uloop_timeout_set(&retry, t * 1000);
 276                 return;
 277         }
 278
 279         DPRINTF("reconnected to ubus, new id: %08x\n", ctx->local_id);
 280         netifd_ubus_add_fd();
 281 }
 282
 283 static void
 284 netifd_ubus_connection_lost(struct ubus_context *ctx)
 285 {
 286         netifd_fd_delete(&ubus_fd);
 287         netifd_ubus_reconnect_timer(NULL);
 288 }
 289
 290 int
 291 netifd_ubus_init(const char *path)
 292 {
 293         int ret;
 294
 295         uloop_init();
 296         ubus_path = path;
 297
 298         ctx = ubus_connect(path);
 299         if (!ctx)
 300                 return -EIO;
 301
 302         DPRINTF("connected as %08x\n", ctx->local_id);
 303         ctx->connection_lost = netifd_ubus_connection_lost;
 304         netifd_ubus_add_fd();
 305
 306         ret = ubus_add_object(ctx, &main_object);
 307         if (ret)
 308                 goto out;
 309
 310         ret = ubus_add_object(ctx, &dev_object);
 311
 312 out:
 313         if (ret != 0)
 314                 fprintf(stderr, "Failed to publish object: %s\n", ubus_strerror(ret));
 315         return ret;
 316 }
 317
 318 void
 319 netifd_ubus_done(void)
 320 {
 321         ubus_free(ctx);
 322 }
 323
 324
 325 /* per-interface object */
 326
 327 static int
 328 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
 329                  struct ubus_request_data *req, const char *method,
 330                  struct blob_attr *msg)
 331 {
 332         struct interface *iface;
 333
 334         iface = container_of(obj, struct interface, ubus);
 335         interface_set_up(iface);
 336
 337         return 0;
 338 }
 339
 340 static int
 341 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
 342                    struct ubus_request_data *req, const char *method,
 343                    struct blob_attr *msg)
 344 {
 345         struct interface *iface;
 346
 347         iface = container_of(obj, struct interface, ubus);
 348         interface_set_down(iface);
 349
 350         return 0;
 351 }
 352
 353 static void
 354 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
 355 {
 356         struct interface_error *error;
 357         void *e, *e2, *e3;
 358         int i;
 359
 360         e = blobmsg_open_array(b, "errors");
 361         list_for_each_entry(error, &iface->errors, list) {
 362                 e2 = blobmsg_open_table(b, NULL);
 363
 364                 blobmsg_add_string(b, "subsystem", error->subsystem);
 365                 blobmsg_add_string(b, "code", error->code);
 366                 if (error->data[0]) {
 367                         e3 = blobmsg_open_array(b, "data");
 368                         for (i = 0; error->data[i]; i++)
 369                                 blobmsg_add_string(b, NULL, error->data[i]);
 370                         blobmsg_close_array(b, e3);
 371                 }
 372
 373                 blobmsg_close_table(b, e2);
 374         }
 375         blobmsg_close_array(b, e);
 376 }
 377
 378 static void
 379 interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6,
 380                                bool enabled)
 381 {
 382         struct device_addr *addr;
 383         char *buf;
 384         void *a;
 385         int buflen = 128;
 386         int af;
 387
 388         vlist_for_each_element(&ip->addr, addr, node) {
 389                 if (addr->enabled != enabled)
 390                         continue;
 391
 392                 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 393                         af = AF_INET;
 394                 else
 395                         af = AF_INET6;
 396
 397                 if (af != (v6 ? AF_INET6 : AF_INET))
 398                         continue;
 399
 400                 a = blobmsg_open_table(&b, NULL);
 401
 402                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 403                 inet_ntop(af, &addr->addr, buf, buflen);
 404                 blobmsg_add_string_buffer(&b);
 405
 406                 blobmsg_add_u32(&b, "mask", addr->mask);
 407
 408                 blobmsg_close_table(&b, a);
 409         }
 410 }
 411
 412 static void
 413 interface_ip_dump_route_list(struct interface_ip_settings *ip, bool enabled)
 414 {
 415         struct device_route *route;
 416         int buflen = 128;
 417         char *buf;
 418         void *r;
 419         int af;
 420
 421         vlist_for_each_element(&ip->route, route, node) {
 422                 if (route->enabled != enabled)
 423                         continue;
 424
 425                 if ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 426                         af = AF_INET;
 427                 else
 428                         af = AF_INET6;
 429
 430                 r = blobmsg_open_table(&b, NULL);
 431
 432                 buf = blobmsg_alloc_string_buffer(&b, "target", buflen);
 433                 inet_ntop(af, &route->addr, buf, buflen);
 434                 blobmsg_add_string_buffer(&b);
 435
 436                 blobmsg_add_u32(&b, "mask", route->mask);
 437
 438                 buf = blobmsg_alloc_string_buffer(&b, "nexthop", buflen);
 439                 inet_ntop(af, &route->nexthop, buf, buflen);
 440                 blobmsg_add_string_buffer(&b);
 441
 442                 if (route->flags & DEVROUTE_MTU)
 443                         blobmsg_add_u32(&b, "mtu", route->mtu);
 444
 445                 if (route->flags & DEVROUTE_METRIC)
 446                         blobmsg_add_u32(&b, "metric", route->metric);
 447
 448                 blobmsg_close_table(&b, r);
 449         }
 450 }
 451
 452 static void
 453 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip,
 454                                   bool enabled)
 455 {
 456         struct dns_server *dns;
 457         int buflen = 128;
 458         char *buf;
 459
 460         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 461                 if (ip->no_dns == enabled)
 462                         continue;
 463
 464                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 465                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 466                 blobmsg_add_string_buffer(&b);
 467         }
 468 }
 469
 470 static void
 471 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip,
 472                                   bool enabled)
 473 {
 474         struct dns_search_domain *dns;
 475
 476         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 477                 if (ip->no_dns == enabled)
 478                         continue;
 479
 480                 blobmsg_add_string(&b, NULL, dns->name);
 481         }
 482 }
 483
 484 static int
 485 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 486                      struct ubus_request_data *req, const char *method,
 487                      struct blob_attr *msg)
 488 {
 489         struct interface *iface;
 490         struct interface_data *data;
 491         struct device *dev;
 492         void *a, *inactive;
 493
 494         iface = container_of(obj, struct interface, ubus);
 495
 496         blob_buf_init(&b, 0);
 497         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 498         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 499         blobmsg_add_u8(&b, "available", iface->available);
 500         blobmsg_add_u8(&b, "autostart", iface->autostart);
 501
 502         if (iface->state == IFS_UP) {
 503                 time_t cur = system_get_rtime();
 504                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 505                 blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 506         }
 507
 508         if (iface->proto_handler)
 509                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 510
 511         dev = iface->main_dev.dev;
 512         if (dev && !dev->hidden &&
 513             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 514                 blobmsg_add_string(&b, "device", dev->ifname);
 515
 516         if (iface->state == IFS_UP) {
 517                 blobmsg_add_u32(&b, "metric", iface->metric);
 518                 a = blobmsg_open_array(&b, "ipv4-address");
 519                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 520                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 521                 blobmsg_close_array(&b, a);
 522                 a = blobmsg_open_array(&b, "ipv6-address");
 523                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 524                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 525                 blobmsg_close_array(&b, a);
 526                 a = blobmsg_open_array(&b, "route");
 527                 interface_ip_dump_route_list(&iface->config_ip, true);
 528                 interface_ip_dump_route_list(&iface->proto_ip, true);
 529                 blobmsg_close_array(&b, a);
 530                 a = blobmsg_open_array(&b, "dns-server");
 531                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 532                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 533                 blobmsg_close_array(&b, a);
 534                 a = blobmsg_open_array(&b, "dns-search");
 535                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 536                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 537                 blobmsg_close_array(&b, a);
 538
 539                 inactive = blobmsg_open_table(&b, "inactive");
 540                 a = blobmsg_open_array(&b, "ipv4-address");
 541                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 542                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 543                 blobmsg_close_array(&b, a);
 544                 a = blobmsg_open_array(&b, "ipv6-address");
 545                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 546                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 547                 blobmsg_close_array(&b, a);
 548                 a = blobmsg_open_array(&b, "route");
 549                 interface_ip_dump_route_list(&iface->config_ip, false);
 550                 interface_ip_dump_route_list(&iface->proto_ip, false);
 551                 blobmsg_close_array(&b, a);
 552                 a = blobmsg_open_array(&b, "dns-server");
 553                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 554                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 555                 blobmsg_close_array(&b, a);
 556                 a = blobmsg_open_array(&b, "dns-search");
 557                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 558                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 559                 blobmsg_close_array(&b, a);
 560                 blobmsg_close_table(&b, inactive);
 561         }
 562
 563         a = blobmsg_open_table(&b, "data");
 564         avl_for_each_element(&iface->data, data, node)
 565                 blob_put(&b, blob_id(data->data), blob_data(data->data), blob_len(data->data));
 566
 567         blobmsg_close_table(&b, a);
 568
 569         if (!list_is_empty(&iface->errors))
 570                 netifd_add_interface_errors(&b, iface);
 571
 572         ubus_send_reply(ctx, req, b.head);
 573
 574         return 0;
 575 }
 576
 577 static int
 578 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 579                            struct ubus_request_data *req, const char *method,
 580                            struct blob_attr *msg)
 581 {
 582         struct blob_attr *tb[__DEV_MAX];
 583         struct interface *iface;
 584         struct device *dev;
 585         bool add = !strncmp(method, "add", 3);
 586         int ret;
 587
 588         iface = container_of(obj, struct interface, ubus);
 589
 590         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 591
 592         if (!tb[DEV_NAME])
 593                 return UBUS_STATUS_INVALID_ARGUMENT;
 594
 595         device_lock();
 596
 597         dev = device_get(blobmsg_data(tb[DEV_NAME]), add ? 2 : 0);
 598         if (add && !dev)
 599                 return UBUS_STATUS_NOT_FOUND;
 600
 601         if (add) {
 602                 device_set_present(dev, true);
 603                 if (iface->device_config)
 604                         device_set_config(dev, &simple_device_type, iface->config);
 605
 606                 system_if_apply_settings(dev, &dev->settings);
 607                 ret = interface_add_link(iface, dev);
 608         } else {
 609                 ret = interface_remove_link(iface, dev);
 610         }
 611
 612         device_unlock();
 613
 614         return ret;
 615 }
 616
 617
 618 static int
 619 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 620                           struct ubus_request_data *req, const char *method,
 621                           struct blob_attr *msg)
 622 {
 623         struct interface *iface;
 624
 625         iface = container_of(obj, struct interface, ubus);
 626
 627         if (!iface->proto || !iface->proto->notify)
 628                 return UBUS_STATUS_NOT_SUPPORTED;
 629
 630         return iface->proto->notify(iface->proto, msg);
 631 }
 632
 633 static void
 634 netifd_iface_do_remove(struct uloop_timeout *timeout)
 635 {
 636         struct interface *iface;
 637
 638         iface = container_of(timeout, struct interface, remove_timer);
 639         vlist_delete(&interfaces, &iface->node);
 640 }
 641
 642 static int
 643 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 644                     struct ubus_request_data *req, const char *method,
 645                     struct blob_attr *msg)
 646 {
 647         struct interface *iface;
 648
 649         iface = container_of(obj, struct interface, ubus);
 650         if (iface->remove_timer.cb)
 651                 return UBUS_STATUS_INVALID_ARGUMENT;
 652
 653         iface->remove_timer.cb = netifd_iface_do_remove;
 654         uloop_timeout_set(&iface->remove_timer, 100);
 655         return 0;
 656 }
 657
 658 static int
 659 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 660                             struct ubus_request_data *req, const char *method,
 661                             struct blob_attr *msg)
 662 {
 663         struct interface *iface;
 664         struct device *dev;
 665         const struct device_hotplug_ops *ops;
 666
 667         iface = container_of(obj, struct interface, ubus);
 668         dev = iface->main_dev.dev;
 669         if (!dev)
 670                 return 0;
 671
 672         ops = dev->hotplug_ops;
 673         if (!ops)
 674                 return 0;
 675
 676         return ops->prepare(dev);
 677 }
 678
 679 static int
 680 netifd_handle_set_data(struct ubus_context *ctx, struct ubus_object *obj,
 681                        struct ubus_request_data *req, const char *method,
 682                        struct blob_attr *msg)
 683 {
 684         struct interface *iface;
 685         struct blob_attr *cur;
 686         int rem, ret;
 687
 688         iface = container_of(obj, struct interface, ubus);
 689
 690         blob_for_each_attr(cur, msg, rem) {
 691                 ret = interface_add_data(iface, cur);
 692                 if (ret)
 693                         return ret;
 694         }
 695
 696         return 0;
 697 }
 698
 699 static struct ubus_method iface_object_methods[] = {
 700         { .name = "up", .handler = netifd_handle_up },
 701         { .name = "down", .handler = netifd_handle_down },
 702         { .name = "status", .handler = netifd_handle_status },
 703         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 704         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_policy ),
 705         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_policy ),
 706         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 707         { .name = "remove", .handler = netifd_iface_remove },
 708         { .name = "set_data", .handler = netifd_handle_set_data },
 709 };
 710
 711 static struct ubus_object_type iface_object_type =
 712         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 713
 714
 715 void
 716 netifd_ubus_interface_event(struct interface *iface, bool up)
 717 {
 718         blob_buf_init(&b, 0);
 719         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
 720         blobmsg_add_string(&b, "interface", iface->name);
 721         ubus_send_event(ctx, "network.interface", b.head);
 722 }
 723
 724 void
 725 netifd_ubus_add_interface(struct interface *iface)
 726 {
 727         struct ubus_object *obj = &iface->ubus;
 728         char *name = NULL;
 729
 730         asprintf(&name, "%s.interface.%s", main_object.name, iface->name);
 731         if (!name)
 732                 return;
 733
 734         obj->name = name;
 735         obj->type = &iface_object_type;
 736         obj->methods = iface_object_methods;
 737         obj->n_methods = ARRAY_SIZE(iface_object_methods);
 738         if (ubus_add_object(ctx, &iface->ubus)) {
 739                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
 740                 free(name);
 741                 obj->name = NULL;
 742         }
 743 }
 744
 745 void
 746 netifd_ubus_remove_interface(struct interface *iface)
 747 {
 748         if (!iface->ubus.name)
 749                 return;
 750
 751         ubus_remove_object(ctx, &iface->ubus);
 752         free((void *) iface->ubus.name);
 753 }