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 const char *ubus_path;
  29
  30 /* global object */
  31
  32 static int
  33 netifd_handle_restart(struct ubus_context *ctx, struct ubus_object *obj,
  34                       struct ubus_request_data *req, const char *method,
  35                       struct blob_attr *msg)
  36 {
  37         netifd_restart();
  38         return 0;
  39 }
  40
  41 static int
  42 netifd_handle_reload(struct ubus_context *ctx, struct ubus_object *obj,
  43                      struct ubus_request_data *req, const char *method,
  44                      struct blob_attr *msg)
  45 {
  46         netifd_reload();
  47         return 0;
  48 }
  49
  50 enum {
  51         HR_TARGET,
  52         HR_V6,
  53         HR_INTERFACE,
  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         [HR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
  61 };
  62
  63 static int
  64 netifd_add_host_route(struct ubus_context *ctx, struct ubus_object *obj,
  65                       struct ubus_request_data *req, const char *method,
  66                       struct blob_attr *msg)
  67 {
  68         struct blob_attr *tb[__HR_MAX];
  69         struct interface *iface = NULL;
  70         union if_addr a;
  71         bool v6 = false;
  72
  73         blobmsg_parse(route_policy, __HR_MAX, tb, blob_data(msg), blob_len(msg));
  74         if (!tb[HR_TARGET])
  75                 return UBUS_STATUS_INVALID_ARGUMENT;
  76
  77         if (tb[HR_V6])
  78                 v6 = blobmsg_get_bool(tb[HR_V6]);
  79
  80         if (tb[HR_INTERFACE])
  81                 iface = vlist_find(&interfaces, blobmsg_data(tb[HR_INTERFACE]), iface, node);
  82
  83         memset(&a, 0, sizeof(a));
  84         if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(tb[HR_TARGET]), &a))
  85                 return UBUS_STATUS_INVALID_ARGUMENT;
  86
  87
  88         iface = interface_ip_add_target_route(&a, v6, iface);
  89         if (!iface)
  90                 return UBUS_STATUS_NOT_FOUND;
  91
  92         blob_buf_init(&b, 0);
  93         blobmsg_add_string(&b, "interface", iface->name);
  94         ubus_send_reply(ctx, req, b.head);
  95
  96         return 0;
  97 }
  98
  99 static int
 100 netifd_get_proto_handlers(struct ubus_context *ctx, struct ubus_object *obj,
 101                           struct ubus_request_data *req, const char *method,
 102                           struct blob_attr *msg)
 103 {
 104         blob_buf_init(&b, 0);
 105         proto_dump_handlers(&b);
 106         ubus_send_reply(ctx, req, b.head);
 107
 108         return 0;
 109 }
 110
 111
 112 enum {
 113         DI_NAME,
 114         __DI_MAX
 115 };
 116
 117 static const struct blobmsg_policy dynamic_policy[__DI_MAX] = {
 118         [DI_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 119 };
 120
 121 static int
 122 netifd_add_dynamic(struct ubus_context *ctx, struct ubus_object *obj,
 123                       struct ubus_request_data *req, const char *method,
 124                       struct blob_attr *msg)
 125 {
 126         struct blob_attr *tb[__DI_MAX];
 127         struct interface *iface;
 128         struct blob_attr *config;
 129         struct device *dev;
 130
 131         blobmsg_parse(dynamic_policy, __DI_MAX, tb, blob_data(msg), blob_len(msg));
 132
 133         if (!tb[DI_NAME])
 134                 return UBUS_STATUS_INVALID_ARGUMENT;
 135
 136         const char *name = blobmsg_get_string(tb[DI_NAME]);
 137
 138         iface = interface_alloc(name, msg);
 139         if (!iface)
 140                 return UBUS_STATUS_UNKNOWN_ERROR;
 141
 142         interface_set_dynamic(iface);
 143         iface->device_config = true;
 144
 145         config = blob_memdup(msg);
 146         if (!config)
 147                 goto error;
 148
 149         interface_add(iface, config);
 150
 151         // need to look up the interface name again, in case of config update,
 152         iface = vlist_find(&interfaces, name, iface, node);
 153         if (!iface)
 154                 return UBUS_STATUS_UNKNOWN_ERROR;
 155
 156         dev = iface->main_dev.dev;
 157         if (!dev || !dev->default_config)
 158                 return UBUS_STATUS_UNKNOWN_ERROR;
 159
 160         device_set_config(dev, dev->type, msg);
 161         return UBUS_STATUS_OK;
 162
 163 error:
 164         free(iface);
 165         return UBUS_STATUS_UNKNOWN_ERROR;
 166 }
 167
 168 static struct ubus_method main_object_methods[] = {
 169         { .name = "restart", .handler = netifd_handle_restart },
 170         { .name = "reload", .handler = netifd_handle_reload },
 171         UBUS_METHOD("add_host_route", netifd_add_host_route, route_policy),
 172         { .name = "get_proto_handlers", .handler = netifd_get_proto_handlers },
 173         UBUS_METHOD("add_dynamic", netifd_add_dynamic, dynamic_policy),
 174 };
 175
 176 static struct ubus_object_type main_object_type =
 177         UBUS_OBJECT_TYPE("netifd", main_object_methods);
 178
 179 static struct ubus_object main_object = {
 180         .name = "network",
 181         .type = &main_object_type,
 182         .methods = main_object_methods,
 183         .n_methods = ARRAY_SIZE(main_object_methods),
 184 };
 185
 186 enum {
 187         DEV_NAME,
 188         __DEV_MAX,
 189 };
 190
 191 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
 192         [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 193 };
 194
 195 static int
 196 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
 197                   struct ubus_request_data *req, const char *method,
 198                   struct blob_attr *msg)
 199 {
 200         struct device *dev = NULL;
 201         struct blob_attr *tb[__DEV_MAX];
 202
 203         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 204
 205         if (tb[DEV_NAME]) {
 206                 dev = device_get(blobmsg_data(tb[DEV_NAME]), false);
 207                 if (!dev)
 208                         return UBUS_STATUS_INVALID_ARGUMENT;
 209         }
 210
 211         blob_buf_init(&b, 0);
 212         device_dump_status(&b, dev);
 213         ubus_send_reply(ctx, req, b.head);
 214
 215         return 0;
 216 }
 217
 218 enum {
 219         ALIAS_ATTR_ALIAS,
 220         ALIAS_ATTR_DEV,
 221         __ALIAS_ATTR_MAX,
 222 };
 223
 224 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
 225         [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
 226         [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
 227 };
 228
 229 static int
 230 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
 231                     struct ubus_request_data *req, const char *method,
 232                     struct blob_attr *msg)
 233 {
 234         struct device *dev = NULL;
 235         struct blob_attr *tb[__ALIAS_ATTR_MAX];
 236         struct blob_attr *cur;
 237         int rem;
 238
 239         blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
 240
 241         if (!tb[ALIAS_ATTR_ALIAS])
 242                 return UBUS_STATUS_INVALID_ARGUMENT;
 243
 244         if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
 245                 dev = device_get(blobmsg_data(cur), true);
 246                 if (!dev)
 247                         return UBUS_STATUS_NOT_FOUND;
 248         }
 249
 250         blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
 251                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 252                         goto error;
 253
 254                 if (!blobmsg_check_attr(cur, NULL))
 255                         goto error;
 256
 257                 alias_notify_device(blobmsg_data(cur), dev);
 258         }
 259         return 0;
 260
 261 error:
 262         device_free_unused(dev);
 263         return UBUS_STATUS_INVALID_ARGUMENT;
 264 }
 265
 266 enum {
 267         DEV_STATE_NAME,
 268         DEV_STATE_DEFER,
 269         __DEV_STATE_MAX,
 270 };
 271
 272 static const struct blobmsg_policy dev_state_policy[__DEV_STATE_MAX] = {
 273         [DEV_STATE_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 274         [DEV_STATE_DEFER] = { .name = "defer", .type = BLOBMSG_TYPE_BOOL },
 275 };
 276
 277 static int
 278 netifd_handle_set_state(struct ubus_context *ctx, struct ubus_object *obj,
 279                         struct ubus_request_data *req, const char *method,
 280                         struct blob_attr *msg)
 281 {
 282         struct device *dev = NULL;
 283         struct blob_attr *tb[__DEV_STATE_MAX];
 284         struct blob_attr *cur;
 285
 286         blobmsg_parse(dev_state_policy, __DEV_STATE_MAX, tb, blob_data(msg), blob_len(msg));
 287
 288         cur = tb[DEV_STATE_NAME];
 289         if (!cur)
 290                 return UBUS_STATUS_INVALID_ARGUMENT;
 291
 292         dev = device_get(blobmsg_data(cur), false);
 293         if (!dev)
 294                 return UBUS_STATUS_NOT_FOUND;
 295
 296         cur = tb[DEV_STATE_DEFER];
 297         if (cur)
 298                 device_set_deferred(dev, !!blobmsg_get_u8(cur));
 299
 300         return 0;
 301 }
 302
 303 static struct ubus_method dev_object_methods[] = {
 304         UBUS_METHOD("status", netifd_dev_status, dev_policy),
 305         UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
 306         UBUS_METHOD("set_state", netifd_handle_set_state, dev_state_policy),
 307 };
 308
 309 static struct ubus_object_type dev_object_type =
 310         UBUS_OBJECT_TYPE("device", dev_object_methods);
 311
 312 static struct ubus_object dev_object = {
 313         .name = "network.device",
 314         .type = &dev_object_type,
 315         .methods = dev_object_methods,
 316         .n_methods = ARRAY_SIZE(dev_object_methods),
 317 };
 318
 319 static void
 320 netifd_ubus_add_fd(void)
 321 {
 322         ubus_add_uloop(ctx);
 323         system_fd_set_cloexec(ctx->sock.fd);
 324 }
 325
 326 static void
 327 netifd_ubus_reconnect_timer(struct uloop_timeout *timeout)
 328 {
 329         static struct uloop_timeout retry = {
 330                 .cb = netifd_ubus_reconnect_timer,
 331         };
 332         int t = 2;
 333
 334         if (ubus_reconnect(ctx, ubus_path) != 0) {
 335                 DPRINTF("failed to reconnect, trying again in %d seconds\n", t);
 336                 uloop_timeout_set(&retry, t * 1000);
 337                 return;
 338         }
 339
 340         DPRINTF("reconnected to ubus, new id: %08x\n", ctx->local_id);
 341         netifd_ubus_add_fd();
 342 }
 343
 344 static void
 345 netifd_ubus_connection_lost(struct ubus_context *ctx)
 346 {
 347         netifd_ubus_reconnect_timer(NULL);
 348 }
 349
 350 /* per-interface object */
 351
 352 static int
 353 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
 354                  struct ubus_request_data *req, const char *method,
 355                  struct blob_attr *msg)
 356 {
 357         struct interface *iface;
 358
 359         iface = container_of(obj, struct interface, ubus);
 360         interface_set_up(iface);
 361
 362         return 0;
 363 }
 364
 365 static int
 366 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
 367                    struct ubus_request_data *req, const char *method,
 368                    struct blob_attr *msg)
 369 {
 370         struct interface *iface;
 371
 372         iface = container_of(obj, struct interface, ubus);
 373         interface_set_down(iface);
 374
 375         return 0;
 376 }
 377
 378 static void
 379 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
 380 {
 381         struct interface_error *error;
 382         void *e, *e2, *e3;
 383         int i;
 384
 385         e = blobmsg_open_array(b, "errors");
 386         list_for_each_entry(error, &iface->errors, list) {
 387                 e2 = blobmsg_open_table(b, NULL);
 388
 389                 blobmsg_add_string(b, "subsystem", error->subsystem);
 390                 blobmsg_add_string(b, "code", error->code);
 391                 if (error->data[0]) {
 392                         e3 = blobmsg_open_array(b, "data");
 393                         for (i = 0; error->data[i]; i++)
 394                                 blobmsg_add_string(b, NULL, error->data[i]);
 395                         blobmsg_close_array(b, e3);
 396                 }
 397
 398                 blobmsg_close_table(b, e2);
 399         }
 400         blobmsg_close_array(b, e);
 401 }
 402
 403 static void
 404 interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6,
 405                                bool enabled)
 406 {
 407         struct device_addr *addr;
 408         char *buf;
 409         void *a;
 410         int buflen = 128;
 411         int af;
 412
 413         time_t now = system_get_rtime();
 414         vlist_for_each_element(&ip->addr, addr, node) {
 415                 if (addr->enabled != enabled)
 416                         continue;
 417
 418                 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 419                         af = AF_INET;
 420                 else
 421                         af = AF_INET6;
 422
 423                 if (af != (v6 ? AF_INET6 : AF_INET))
 424                         continue;
 425
 426                 a = blobmsg_open_table(&b, NULL);
 427
 428                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 429                 inet_ntop(af, &addr->addr, buf, buflen);
 430                 blobmsg_add_string_buffer(&b);
 431
 432                 blobmsg_add_u32(&b, "mask", addr->mask);
 433
 434                 if (addr->preferred_until) {
 435                         int preferred = addr->preferred_until - now;
 436                         if (preferred < 0)
 437                                 preferred = 0;
 438                         blobmsg_add_u32(&b, "preferred", preferred);
 439                 }
 440
 441                 if (addr->valid_until)
 442                         blobmsg_add_u32(&b, "valid", addr->valid_until - now);
 443
 444                 blobmsg_close_table(&b, a);
 445         }
 446 }
 447
 448 static void
 449 interface_ip_dump_route_list(struct interface_ip_settings *ip, bool enabled)
 450 {
 451         struct device_route *route;
 452         int buflen = 128;
 453         char *buf;
 454         void *r;
 455         int af;
 456
 457         time_t now = system_get_rtime();
 458         vlist_for_each_element(&ip->route, route, node) {
 459                 if (route->enabled != enabled)
 460                         continue;
 461
 462                 if ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 463                         af = AF_INET;
 464                 else
 465                         af = AF_INET6;
 466
 467                 r = blobmsg_open_table(&b, NULL);
 468
 469                 buf = blobmsg_alloc_string_buffer(&b, "target", buflen);
 470                 inet_ntop(af, &route->addr, buf, buflen);
 471                 blobmsg_add_string_buffer(&b);
 472
 473                 blobmsg_add_u32(&b, "mask", route->mask);
 474
 475                 buf = blobmsg_alloc_string_buffer(&b, "nexthop", buflen);
 476                 inet_ntop(af, &route->nexthop, buf, buflen);
 477                 blobmsg_add_string_buffer(&b);
 478
 479                 if (route->flags & DEVROUTE_MTU)
 480                         blobmsg_add_u32(&b, "mtu", route->mtu);
 481
 482                 if (route->flags & DEVROUTE_METRIC)
 483                         blobmsg_add_u32(&b, "metric", route->metric);
 484
 485                 if (route->flags & DEVROUTE_TABLE)
 486                         blobmsg_add_u32(&b, "table", route->table);
 487
 488                 if (route->valid_until)
 489                         blobmsg_add_u32(&b, "valid", route->valid_until - now);
 490
 491                 buf = blobmsg_alloc_string_buffer(&b, "source", buflen);
 492                 inet_ntop(af, &route->source, buf, buflen);
 493                 snprintf(buf + strlen(buf), 4, "/%u", route->sourcemask);
 494                 blobmsg_add_string_buffer(&b);
 495
 496                 blobmsg_close_table(&b, r);
 497         }
 498 }
 499
 500
 501 static void
 502 interface_ip_dump_prefix_list(struct interface_ip_settings *ip)
 503 {
 504         struct device_prefix *prefix;
 505         char *buf;
 506         void *a, *c;
 507         const int buflen = INET6_ADDRSTRLEN;
 508
 509         time_t now = system_get_rtime();
 510         vlist_for_each_element(&ip->prefix, prefix, node) {
 511                 a = blobmsg_open_table(&b, NULL);
 512
 513                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 514                 inet_ntop(AF_INET6, &prefix->addr, buf, buflen);
 515                 blobmsg_add_string_buffer(&b);
 516
 517                 blobmsg_add_u32(&b, "mask", prefix->length);
 518
 519                 if (prefix->preferred_until) {
 520                         int preferred = prefix->preferred_until - now;
 521                         if (preferred < 0)
 522                                 preferred = 0;
 523                         blobmsg_add_u32(&b, "preferred", preferred);
 524                 }
 525
 526                 if (prefix->valid_until)
 527                         blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 528
 529                 blobmsg_add_string(&b, "class", prefix->pclass);
 530
 531                 c = blobmsg_open_table(&b, "assigned");
 532                 struct device_prefix_assignment *assign;
 533                 list_for_each_entry(assign, &prefix->assignments, head) {
 534                         if (!assign->name[0])
 535                                 continue;
 536
 537                         struct in6_addr addr = prefix->addr;
 538                         addr.s6_addr32[1] |= htonl(assign->assigned);
 539
 540                         void *d = blobmsg_open_table(&b, assign->name);
 541
 542                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 543                         inet_ntop(AF_INET6, &addr, buf, buflen);
 544                         blobmsg_add_string_buffer(&b);
 545
 546                         blobmsg_add_u32(&b, "mask", assign->length);
 547
 548                         blobmsg_close_table(&b, d);
 549                 }
 550                 blobmsg_close_table(&b, c);
 551
 552                 blobmsg_close_table(&b, a);
 553         }
 554 }
 555
 556
 557 static void
 558 interface_ip_dump_prefix_assignment_list(struct interface *iface)
 559 {
 560         void *a;
 561         char *buf;
 562         const int buflen = INET6_ADDRSTRLEN;
 563         time_t now = system_get_rtime();
 564
 565         struct device_prefix *prefix;
 566         list_for_each_entry(prefix, &prefixes, head) {
 567                 struct device_prefix_assignment *assign;
 568                 list_for_each_entry(assign, &prefix->assignments, head) {
 569                         if (strcmp(assign->name, iface->name))
 570                                 continue;
 571
 572                         struct in6_addr addr = prefix->addr;
 573                         addr.s6_addr32[1] |= htonl(assign->assigned);
 574
 575                         a = blobmsg_open_table(&b, NULL);
 576
 577                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 578                         inet_ntop(AF_INET6, &addr, buf, buflen);
 579                         blobmsg_add_string_buffer(&b);
 580
 581                         blobmsg_add_u32(&b, "mask", assign->length);
 582
 583                         if (prefix->preferred_until) {
 584                                 int preferred = prefix->preferred_until - now;
 585                                 if (preferred < 0)
 586                                         preferred = 0;
 587                                 blobmsg_add_u32(&b, "preferred", preferred);
 588                         }
 589
 590                         if (prefix->valid_until)
 591                                 blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 592
 593                         blobmsg_close_table(&b, a);
 594                 }
 595         }
 596 }
 597
 598
 599 static void
 600 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip,
 601                                   bool enabled)
 602 {
 603         struct dns_server *dns;
 604         int buflen = 128;
 605         char *buf;
 606
 607         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 608                 if (ip->no_dns == enabled)
 609                         continue;
 610
 611                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 612                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 613                 blobmsg_add_string_buffer(&b);
 614         }
 615 }
 616
 617 static void
 618 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip,
 619                                   bool enabled)
 620 {
 621         struct dns_search_domain *dns;
 622
 623         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 624                 if (ip->no_dns == enabled)
 625                         continue;
 626
 627                 blobmsg_add_string(&b, NULL, dns->name);
 628         }
 629 }
 630
 631 static void
 632 netifd_dump_status(struct interface *iface)
 633 {
 634         struct interface_data *data;
 635         struct device *dev;
 636         void *a, *inactive;
 637
 638         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 639         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 640         blobmsg_add_u8(&b, "available", iface->available);
 641         blobmsg_add_u8(&b, "autostart", iface->autostart);
 642
 643         if (iface->state == IFS_UP) {
 644                 time_t cur = system_get_rtime();
 645                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 646                 blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 647         }
 648
 649         if (iface->proto_handler)
 650                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 651
 652         dev = iface->main_dev.dev;
 653         if (dev && !dev->hidden &&
 654             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 655                 blobmsg_add_string(&b, "device", dev->ifname);
 656
 657         if (iface->state == IFS_UP) {
 658                 blobmsg_add_u32(&b, "metric", iface->metric);
 659                 a = blobmsg_open_array(&b, "ipv4-address");
 660                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 661                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 662                 blobmsg_close_array(&b, a);
 663                 a = blobmsg_open_array(&b, "ipv6-address");
 664                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 665                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 666                 blobmsg_close_array(&b, a);
 667                 a = blobmsg_open_array(&b, "ipv6-prefix");
 668                 interface_ip_dump_prefix_list(&iface->config_ip);
 669                 interface_ip_dump_prefix_list(&iface->proto_ip);
 670                 blobmsg_close_array(&b, a);
 671                 a = blobmsg_open_array(&b, "ipv6-prefix-assignment");
 672                 interface_ip_dump_prefix_assignment_list(iface);
 673                 blobmsg_close_array(&b, a);
 674                 a = blobmsg_open_array(&b, "route");
 675                 interface_ip_dump_route_list(&iface->config_ip, true);
 676                 interface_ip_dump_route_list(&iface->proto_ip, true);
 677                 blobmsg_close_array(&b, a);
 678                 a = blobmsg_open_array(&b, "dns-server");
 679                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 680                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 681                 blobmsg_close_array(&b, a);
 682                 a = blobmsg_open_array(&b, "dns-search");
 683                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 684                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 685                 blobmsg_close_array(&b, a);
 686
 687                 inactive = blobmsg_open_table(&b, "inactive");
 688                 a = blobmsg_open_array(&b, "ipv4-address");
 689                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 690                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 691                 blobmsg_close_array(&b, a);
 692                 a = blobmsg_open_array(&b, "ipv6-address");
 693                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 694                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 695                 blobmsg_close_array(&b, a);
 696                 a = blobmsg_open_array(&b, "route");
 697                 interface_ip_dump_route_list(&iface->config_ip, false);
 698                 interface_ip_dump_route_list(&iface->proto_ip, false);
 699                 blobmsg_close_array(&b, a);
 700                 a = blobmsg_open_array(&b, "dns-server");
 701                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 702                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 703                 blobmsg_close_array(&b, a);
 704                 a = blobmsg_open_array(&b, "dns-search");
 705                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 706                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 707                 blobmsg_close_array(&b, a);
 708                 blobmsg_close_table(&b, inactive);
 709         }
 710
 711         a = blobmsg_open_table(&b, "data");
 712         avl_for_each_element(&iface->data, data, node)
 713                 blob_put(&b, blob_id(data->data), blob_data(data->data), blob_len(data->data));
 714
 715         blobmsg_close_table(&b, a);
 716
 717         if (!list_is_empty(&iface->errors))
 718                 netifd_add_interface_errors(&b, iface);
 719 }
 720
 721 static int
 722 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 723                      struct ubus_request_data *req, const char *method,
 724                      struct blob_attr *msg)
 725 {
 726         struct interface *iface = container_of(obj, struct interface, ubus);
 727
 728         blob_buf_init(&b, 0);
 729         netifd_dump_status(iface);
 730         ubus_send_reply(ctx, req, b.head);
 731
 732         return 0;
 733 }
 734
 735
 736 static int
 737 netifd_handle_dump(struct ubus_context *ctx, struct ubus_object *obj,
 738                      struct ubus_request_data *req, const char *method,
 739                      struct blob_attr *msg)
 740 {
 741         blob_buf_init(&b, 0);
 742         void *a = blobmsg_open_array(&b, "interface");
 743
 744         struct interface *iface;
 745         vlist_for_each_element(&interfaces, iface, node) {
 746                 void *i = blobmsg_open_table(&b, NULL);
 747                 blobmsg_add_string(&b, "interface", iface->name);
 748                 netifd_dump_status(iface);
 749                 blobmsg_close_table(&b, i);
 750         }
 751
 752         blobmsg_close_array(&b, a);
 753         ubus_send_reply(ctx, req, b.head);
 754
 755         return 0;
 756 }
 757
 758 static int
 759 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 760                            struct ubus_request_data *req, const char *method,
 761                            struct blob_attr *msg)
 762 {
 763         struct blob_attr *tb[__DEV_MAX];
 764         struct interface *iface;
 765         bool add = !strncmp(method, "add", 3);
 766
 767         iface = container_of(obj, struct interface, ubus);
 768
 769         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 770
 771         if (!tb[DEV_NAME])
 772                 return UBUS_STATUS_INVALID_ARGUMENT;
 773
 774         return interface_handle_link(iface, blobmsg_data(tb[DEV_NAME]), add);
 775 }
 776
 777
 778 static int
 779 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 780                           struct ubus_request_data *req, const char *method,
 781                           struct blob_attr *msg)
 782 {
 783         struct interface *iface;
 784
 785         iface = container_of(obj, struct interface, ubus);
 786
 787         if (!iface->proto || !iface->proto->notify)
 788                 return UBUS_STATUS_NOT_SUPPORTED;
 789
 790         return iface->proto->notify(iface->proto, msg);
 791 }
 792
 793 static void
 794 netifd_iface_do_remove(struct uloop_timeout *timeout)
 795 {
 796         struct interface *iface;
 797
 798         iface = container_of(timeout, struct interface, remove_timer);
 799         vlist_delete(&interfaces, &iface->node);
 800 }
 801
 802 static int
 803 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 804                     struct ubus_request_data *req, const char *method,
 805                     struct blob_attr *msg)
 806 {
 807         struct interface *iface;
 808
 809         iface = container_of(obj, struct interface, ubus);
 810         if (iface->remove_timer.cb)
 811                 return UBUS_STATUS_INVALID_ARGUMENT;
 812
 813         iface->remove_timer.cb = netifd_iface_do_remove;
 814         uloop_timeout_set(&iface->remove_timer, 100);
 815         return 0;
 816 }
 817
 818 static int
 819 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 820                             struct ubus_request_data *req, const char *method,
 821                             struct blob_attr *msg)
 822 {
 823         struct interface *iface;
 824         struct device *dev;
 825         const struct device_hotplug_ops *ops;
 826
 827         iface = container_of(obj, struct interface, ubus);
 828         dev = iface->main_dev.dev;
 829         if (!dev)
 830                 return 0;
 831
 832         ops = dev->hotplug_ops;
 833         if (!ops)
 834                 return 0;
 835
 836         return ops->prepare(dev);
 837 }
 838
 839 static int
 840 netifd_handle_set_data(struct ubus_context *ctx, struct ubus_object *obj,
 841                        struct ubus_request_data *req, const char *method,
 842                        struct blob_attr *msg)
 843 {
 844         struct interface *iface;
 845         struct blob_attr *cur;
 846         int rem, ret;
 847
 848         iface = container_of(obj, struct interface, ubus);
 849
 850         blob_for_each_attr(cur, msg, rem) {
 851                 ret = interface_add_data(iface, cur);
 852                 if (ret)
 853                         return ret;
 854         }
 855
 856         return 0;
 857 }
 858
 859 static struct ubus_method iface_object_methods[] = {
 860         { .name = "up", .handler = netifd_handle_up },
 861         { .name = "down", .handler = netifd_handle_down },
 862         { .name = "status", .handler = netifd_handle_status },
 863         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 864         { .name = "dump", .handler = netifd_handle_dump },
 865         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_policy ),
 866         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_policy ),
 867         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 868         { .name = "remove", .handler = netifd_iface_remove },
 869         { .name = "set_data", .handler = netifd_handle_set_data },
 870 };
 871
 872 static struct ubus_object_type iface_object_type =
 873         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 874
 875
 876 static struct ubus_object iface_object = {
 877         .name = "network.interface",
 878         .type = &iface_object_type,
 879         .n_methods = ARRAY_SIZE(iface_object_methods),
 880 };
 881
 882 static void netifd_add_object(struct ubus_object *obj)
 883 {
 884         int ret = ubus_add_object(ctx, obj);
 885
 886         if (ret != 0)
 887                 fprintf(stderr, "Failed to publish object '%s': %s\n", obj->name, ubus_strerror(ret));
 888 }
 889
 890 static const struct blobmsg_policy iface_policy = {
 891         .name = "interface",
 892         .type = BLOBMSG_TYPE_STRING,
 893 };
 894
 895 static int
 896 netifd_handle_iface(struct ubus_context *ctx, struct ubus_object *obj,
 897                     struct ubus_request_data *req, const char *method,
 898                     struct blob_attr *msg)
 899 {
 900         struct interface *iface;
 901         struct blob_attr *tb;
 902         int i;
 903
 904         blobmsg_parse(&iface_policy, 1, &tb, blob_data(msg), blob_len(msg));
 905         if (!tb)
 906                 return UBUS_STATUS_INVALID_ARGUMENT;
 907
 908         iface = vlist_find(&interfaces, blobmsg_data(tb), iface, node);
 909         if (!iface)
 910                 return UBUS_STATUS_NOT_FOUND;
 911
 912         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 913                 ubus_handler_t cb;
 914
 915                 if (strcmp(method, iface_object_methods[i].name) != 0)
 916                         continue;
 917
 918                 cb = iface_object_methods[i].handler;
 919                 return cb(ctx, &iface->ubus, req, method, msg);
 920         }
 921
 922         return UBUS_STATUS_INVALID_ARGUMENT;
 923 }
 924
 925 static void netifd_add_iface_object(void)
 926 {
 927         struct ubus_method *methods;
 928         int i;
 929
 930         methods = calloc(1, sizeof(iface_object_methods));
 931         memcpy(methods, iface_object_methods, sizeof(iface_object_methods));
 932         iface_object.methods = methods;
 933
 934         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 935                 if (methods[i].handler == netifd_handle_dump)
 936                         continue;
 937
 938                 methods[i].handler = netifd_handle_iface;
 939                 methods[i].policy = &iface_policy;
 940                 methods[i].n_policy = 1;
 941         }
 942         netifd_add_object(&iface_object);
 943 }
 944
 945 int
 946 netifd_ubus_init(const char *path)
 947 {
 948         uloop_init();
 949         ubus_path = path;
 950
 951         ctx = ubus_connect(path);
 952         if (!ctx)
 953                 return -EIO;
 954
 955         DPRINTF("connected as %08x\n", ctx->local_id);
 956         ctx->connection_lost = netifd_ubus_connection_lost;
 957         netifd_ubus_add_fd();
 958
 959         netifd_add_object(&main_object);
 960         netifd_add_object(&dev_object);
 961         netifd_add_iface_object();
 962
 963         return 0;
 964 }
 965
 966 void
 967 netifd_ubus_done(void)
 968 {
 969         ubus_free(ctx);
 970 }
 971
 972 void
 973 netifd_ubus_interface_event(struct interface *iface, bool up)
 974 {
 975         blob_buf_init(&b, 0);
 976         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
 977         blobmsg_add_string(&b, "interface", iface->name);
 978         ubus_send_event(ctx, "network.interface", b.head);
 979 }
 980
 981 void
 982 netifd_ubus_interface_notify(struct interface *iface, bool up)
 983 {
 984         const char *event = (up) ? "update" : "down";
 985         blob_buf_init(&b, 0);
 986         blobmsg_add_string(&b, "interface", iface->name);
 987         netifd_dump_status(iface);
 988         ubus_notify(ctx, &iface_object, event, b.head, -1);
 989         ubus_notify(ctx, &iface->ubus, event, b.head, -1);
 990 }
 991
 992 void
 993 netifd_ubus_add_interface(struct interface *iface)
 994 {
 995         struct ubus_object *obj = &iface->ubus;
 996         char *name = NULL;
 997
 998         if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
 999                 return;
1000
1001         obj->name = name;
1002         obj->type = &iface_object_type;
1003         obj->methods = iface_object_methods;
1004         obj->n_methods = ARRAY_SIZE(iface_object_methods);
1005         if (ubus_add_object(ctx, &iface->ubus)) {
1006                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
1007                 free(name);
1008                 obj->name = NULL;
1009         }
1010 }
1011
1012 void
1013 netifd_ubus_remove_interface(struct interface *iface)
1014 {
1015         if (!iface->ubus.name)
1016                 return;
1017
1018         ubus_remove_object(ctx, &iface->ubus);
1019         free((void *) iface->ubus.name);
1020 }