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