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                 c = blobmsg_open_table(&b, "assigned");
 467                 struct device_prefix_assignment *assign;
 468                 list_for_each_entry(assign, &prefix->assignments, head) {
 469                         if (!assign->name[0])
 470                                 continue;
 471
 472                         struct in6_addr addr = prefix->addr;
 473                         addr.s6_addr32[1] |= htonl(assign->assigned);
 474
 475                         void *d = blobmsg_open_table(&b, assign->name);
 476
 477                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 478                         inet_ntop(AF_INET6, &addr, buf, buflen);
 479                         blobmsg_add_string_buffer(&b);
 480
 481                         blobmsg_add_u32(&b, "mask", assign->length);
 482
 483                         blobmsg_close_table(&b, d);
 484                 }
 485                 blobmsg_close_table(&b, c);
 486
 487                 blobmsg_close_table(&b, a);
 488         }
 489 }
 490
 491
 492 static void
 493 interface_ip_dump_prefix_assignment_list(struct interface *iface)
 494 {
 495         void *a;
 496         char *buf;
 497         const int buflen = INET6_ADDRSTRLEN;
 498         time_t now = system_get_rtime();
 499
 500         struct device_prefix *prefix;
 501         list_for_each_entry(prefix, &prefixes, head) {
 502                 struct device_prefix_assignment *assign;
 503                 list_for_each_entry(assign, &prefix->assignments, head) {
 504                         if (strcmp(assign->name, iface->name))
 505                                 continue;
 506
 507                         struct in6_addr addr = prefix->addr;
 508                         addr.s6_addr32[1] |= htonl(assign->assigned);
 509
 510                         a = blobmsg_open_table(&b, NULL);
 511
 512                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 513                         inet_ntop(AF_INET6, &addr, buf, buflen);
 514                         blobmsg_add_string_buffer(&b);
 515
 516                         blobmsg_add_u32(&b, "mask", assign->length);
 517
 518                         if (prefix->preferred_until) {
 519                                 int preferred = prefix->preferred_until - now;
 520                                 if (preferred < 0)
 521                                         preferred = 0;
 522                                 blobmsg_add_u32(&b, "preferred", preferred);
 523                         }
 524
 525                         if (prefix->valid_until)
 526                                 blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 527
 528                         blobmsg_close_table(&b, a);
 529                 }
 530         }
 531 }
 532
 533
 534 static void
 535 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip,
 536                                   bool enabled)
 537 {
 538         struct dns_server *dns;
 539         int buflen = 128;
 540         char *buf;
 541
 542         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 543                 if (ip->no_dns == enabled)
 544                         continue;
 545
 546                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 547                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 548                 blobmsg_add_string_buffer(&b);
 549         }
 550 }
 551
 552 static void
 553 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip,
 554                                   bool enabled)
 555 {
 556         struct dns_search_domain *dns;
 557
 558         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 559                 if (ip->no_dns == enabled)
 560                         continue;
 561
 562                 blobmsg_add_string(&b, NULL, dns->name);
 563         }
 564 }
 565
 566 static int
 567 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 568                      struct ubus_request_data *req, const char *method,
 569                      struct blob_attr *msg)
 570 {
 571         struct interface *iface;
 572         struct interface_data *data;
 573         struct device *dev;
 574         void *a, *inactive;
 575
 576         iface = container_of(obj, struct interface, ubus);
 577
 578         blob_buf_init(&b, 0);
 579         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 580         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 581         blobmsg_add_u8(&b, "available", iface->available);
 582         blobmsg_add_u8(&b, "autostart", iface->autostart);
 583
 584         if (iface->state == IFS_UP) {
 585                 time_t cur = system_get_rtime();
 586                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 587                 blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 588         }
 589
 590         if (iface->proto_handler)
 591                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 592
 593         dev = iface->main_dev.dev;
 594         if (dev && !dev->hidden &&
 595             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 596                 blobmsg_add_string(&b, "device", dev->ifname);
 597
 598         if (iface->state == IFS_UP) {
 599                 blobmsg_add_u32(&b, "metric", iface->metric);
 600                 a = blobmsg_open_array(&b, "ipv4-address");
 601                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 602                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 603                 blobmsg_close_array(&b, a);
 604                 a = blobmsg_open_array(&b, "ipv6-address");
 605                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 606                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 607                 blobmsg_close_array(&b, a);
 608                 a = blobmsg_open_array(&b, "ipv6-prefix");
 609                 interface_ip_dump_prefix_list(&iface->config_ip);
 610                 interface_ip_dump_prefix_list(&iface->proto_ip);
 611                 blobmsg_close_array(&b, a);
 612                 a = blobmsg_open_array(&b, "ipv6-prefix-assignment");
 613                 interface_ip_dump_prefix_assignment_list(iface);
 614                 blobmsg_close_array(&b, a);
 615                 a = blobmsg_open_array(&b, "route");
 616                 interface_ip_dump_route_list(&iface->config_ip, true);
 617                 interface_ip_dump_route_list(&iface->proto_ip, true);
 618                 blobmsg_close_array(&b, a);
 619                 a = blobmsg_open_array(&b, "dns-server");
 620                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 621                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 622                 blobmsg_close_array(&b, a);
 623                 a = blobmsg_open_array(&b, "dns-search");
 624                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 625                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 626                 blobmsg_close_array(&b, a);
 627
 628                 inactive = blobmsg_open_table(&b, "inactive");
 629                 a = blobmsg_open_array(&b, "ipv4-address");
 630                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 631                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 632                 blobmsg_close_array(&b, a);
 633                 a = blobmsg_open_array(&b, "ipv6-address");
 634                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 635                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 636                 blobmsg_close_array(&b, a);
 637                 a = blobmsg_open_array(&b, "route");
 638                 interface_ip_dump_route_list(&iface->config_ip, false);
 639                 interface_ip_dump_route_list(&iface->proto_ip, false);
 640                 blobmsg_close_array(&b, a);
 641                 a = blobmsg_open_array(&b, "dns-server");
 642                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 643                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 644                 blobmsg_close_array(&b, a);
 645                 a = blobmsg_open_array(&b, "dns-search");
 646                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 647                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 648                 blobmsg_close_array(&b, a);
 649                 blobmsg_close_table(&b, inactive);
 650         }
 651
 652         a = blobmsg_open_table(&b, "data");
 653         avl_for_each_element(&iface->data, data, node)
 654                 blob_put(&b, blob_id(data->data), blob_data(data->data), blob_len(data->data));
 655
 656         blobmsg_close_table(&b, a);
 657
 658         if (!list_is_empty(&iface->errors))
 659                 netifd_add_interface_errors(&b, iface);
 660
 661         ubus_send_reply(ctx, req, b.head);
 662
 663         return 0;
 664 }
 665
 666 static int
 667 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 668                            struct ubus_request_data *req, const char *method,
 669                            struct blob_attr *msg)
 670 {
 671         struct blob_attr *tb[__DEV_MAX];
 672         struct interface *iface;
 673         struct device *dev;
 674         bool add = !strncmp(method, "add", 3);
 675         int ret;
 676
 677         iface = container_of(obj, struct interface, ubus);
 678
 679         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 680
 681         if (!tb[DEV_NAME])
 682                 return UBUS_STATUS_INVALID_ARGUMENT;
 683
 684         device_lock();
 685
 686         dev = device_get(blobmsg_data(tb[DEV_NAME]), add ? 2 : 0);
 687         if (!dev) {
 688                 ret = UBUS_STATUS_NOT_FOUND;
 689                 goto out;
 690         }
 691
 692         if (add) {
 693                 device_set_present(dev, true);
 694                 if (iface->device_config)
 695                         device_set_config(dev, &simple_device_type, iface->config);
 696
 697                 system_if_apply_settings(dev, &dev->settings);
 698                 ret = interface_add_link(iface, dev);
 699         } else {
 700                 ret = interface_remove_link(iface, dev);
 701         }
 702
 703 out:
 704         device_unlock();
 705
 706         return ret;
 707 }
 708
 709
 710 static int
 711 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 712                           struct ubus_request_data *req, const char *method,
 713                           struct blob_attr *msg)
 714 {
 715         struct interface *iface;
 716
 717         iface = container_of(obj, struct interface, ubus);
 718
 719         if (!iface->proto || !iface->proto->notify)
 720                 return UBUS_STATUS_NOT_SUPPORTED;
 721
 722         return iface->proto->notify(iface->proto, msg);
 723 }
 724
 725 static void
 726 netifd_iface_do_remove(struct uloop_timeout *timeout)
 727 {
 728         struct interface *iface;
 729
 730         iface = container_of(timeout, struct interface, remove_timer);
 731         vlist_delete(&interfaces, &iface->node);
 732 }
 733
 734 static int
 735 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 736                     struct ubus_request_data *req, const char *method,
 737                     struct blob_attr *msg)
 738 {
 739         struct interface *iface;
 740
 741         iface = container_of(obj, struct interface, ubus);
 742         if (iface->remove_timer.cb)
 743                 return UBUS_STATUS_INVALID_ARGUMENT;
 744
 745         iface->remove_timer.cb = netifd_iface_do_remove;
 746         uloop_timeout_set(&iface->remove_timer, 100);
 747         return 0;
 748 }
 749
 750 static int
 751 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 752                             struct ubus_request_data *req, const char *method,
 753                             struct blob_attr *msg)
 754 {
 755         struct interface *iface;
 756         struct device *dev;
 757         const struct device_hotplug_ops *ops;
 758
 759         iface = container_of(obj, struct interface, ubus);
 760         dev = iface->main_dev.dev;
 761         if (!dev)
 762                 return 0;
 763
 764         ops = dev->hotplug_ops;
 765         if (!ops)
 766                 return 0;
 767
 768         return ops->prepare(dev);
 769 }
 770
 771 static int
 772 netifd_handle_set_data(struct ubus_context *ctx, struct ubus_object *obj,
 773                        struct ubus_request_data *req, const char *method,
 774                        struct blob_attr *msg)
 775 {
 776         struct interface *iface;
 777         struct blob_attr *cur;
 778         int rem, ret;
 779
 780         iface = container_of(obj, struct interface, ubus);
 781
 782         blob_for_each_attr(cur, msg, rem) {
 783                 ret = interface_add_data(iface, cur);
 784                 if (ret)
 785                         return ret;
 786         }
 787
 788         return 0;
 789 }
 790
 791 static struct ubus_method iface_object_methods[] = {
 792         { .name = "up", .handler = netifd_handle_up },
 793         { .name = "down", .handler = netifd_handle_down },
 794         { .name = "status", .handler = netifd_handle_status },
 795         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 796         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_policy ),
 797         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_policy ),
 798         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 799         { .name = "remove", .handler = netifd_iface_remove },
 800         { .name = "set_data", .handler = netifd_handle_set_data },
 801 };
 802
 803 static struct ubus_object_type iface_object_type =
 804         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 805
 806
 807 static struct ubus_object iface_object = {
 808         .name = "network.interface",
 809         .type = &iface_object_type,
 810         .n_methods = ARRAY_SIZE(iface_object_methods),
 811 };
 812
 813 static void netifd_add_object(struct ubus_object *obj)
 814 {
 815         int ret = ubus_add_object(ctx, obj);
 816
 817         if (ret != 0)
 818                 fprintf(stderr, "Failed to publish object '%s': %s\n", obj->name, ubus_strerror(ret));
 819 }
 820
 821 static const struct blobmsg_policy iface_policy = {
 822         .name = "interface",
 823         .type = BLOBMSG_TYPE_STRING,
 824 };
 825
 826 static int
 827 netifd_handle_iface(struct ubus_context *ctx, struct ubus_object *obj,
 828                     struct ubus_request_data *req, const char *method,
 829                     struct blob_attr *msg)
 830 {
 831         struct interface *iface;
 832         struct blob_attr *tb;
 833         int i;
 834
 835         blobmsg_parse(&iface_policy, 1, &tb, blob_data(msg), blob_len(msg));
 836         if (!tb)
 837                 return UBUS_STATUS_INVALID_ARGUMENT;
 838
 839         iface = vlist_find(&interfaces, blobmsg_data(tb), iface, node);
 840         if (!iface)
 841                 return UBUS_STATUS_NOT_FOUND;
 842
 843         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 844                 ubus_handler_t cb;
 845
 846                 if (strcmp(method, iface_object_methods[i].name) != 0)
 847                         continue;
 848
 849                 cb = iface_object_methods[i].handler;
 850                 return cb(ctx, &iface->ubus, req, method, msg);
 851         }
 852
 853         return UBUS_STATUS_INVALID_ARGUMENT;
 854 }
 855
 856 static void netifd_add_iface_object(void)
 857 {
 858         struct ubus_method *methods;
 859         int i;
 860
 861         methods = calloc(1, sizeof(iface_object_methods));
 862         memcpy(methods, iface_object_methods, sizeof(iface_object_methods));
 863         iface_object.methods = methods;
 864
 865         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 866                 methods[i].handler = netifd_handle_iface;
 867                 methods[i].policy = &iface_policy;
 868                 methods[i].n_policy = 1;
 869         }
 870         netifd_add_object(&iface_object);
 871 }
 872
 873 int
 874 netifd_ubus_init(const char *path)
 875 {
 876         uloop_init();
 877         ubus_path = path;
 878
 879         ctx = ubus_connect(path);
 880         if (!ctx)
 881                 return -EIO;
 882
 883         DPRINTF("connected as %08x\n", ctx->local_id);
 884         ctx->connection_lost = netifd_ubus_connection_lost;
 885         netifd_ubus_add_fd();
 886
 887         netifd_add_object(&main_object);
 888         netifd_add_object(&dev_object);
 889         netifd_add_iface_object();
 890
 891         return 0;
 892 }
 893
 894 void
 895 netifd_ubus_done(void)
 896 {
 897         ubus_free(ctx);
 898 }
 899
 900 void
 901 netifd_ubus_interface_event(struct interface *iface, bool up)
 902 {
 903         blob_buf_init(&b, 0);
 904         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
 905         blobmsg_add_string(&b, "interface", iface->name);
 906         ubus_send_event(ctx, "network.interface", b.head);
 907 }
 908
 909 void
 910 netifd_ubus_add_interface(struct interface *iface)
 911 {
 912         struct ubus_object *obj = &iface->ubus;
 913         char *name = NULL;
 914
 915         if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
 916                 return;
 917
 918         obj->name = name;
 919         obj->type = &iface_object_type;
 920         obj->methods = iface_object_methods;
 921         obj->n_methods = ARRAY_SIZE(iface_object_methods);
 922         if (ubus_add_object(ctx, &iface->ubus)) {
 923                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
 924                 free(name);
 925                 obj->name = NULL;
 926         }
 927 }
 928
 929 void
 930 netifd_ubus_remove_interface(struct interface *iface)
 931 {
 932         if (!iface->ubus.name)
 933                 return;
 934
 935         ubus_remove_object(ctx, &iface->ubus);
 936         free((void *) iface->ubus.name);
 937 }