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_MAX
  54 };
  55
  56 static const struct blobmsg_policy route_policy[__HR_MAX] = {
  57         [HR_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
  58         [HR_V6] = { .name = "v6", .type = BLOBMSG_TYPE_BOOL },
  59 };
  60
  61 static int
  62 netifd_add_host_route(struct ubus_context *ctx, struct ubus_object *obj,
  63                       struct ubus_request_data *req, const char *method,
  64                       struct blob_attr *msg)
  65 {
  66         struct blob_attr *tb[__HR_MAX];
  67         struct interface *iface;
  68         union if_addr a;
  69         bool v6 = false;
  70
  71         blobmsg_parse(route_policy, __HR_MAX, tb, blob_data(msg), blob_len(msg));
  72         if (!tb[HR_TARGET])
  73                 return UBUS_STATUS_INVALID_ARGUMENT;
  74
  75         if (tb[HR_V6])
  76                 v6 = blobmsg_get_bool(tb[HR_V6]);
  77
  78         memset(&a, 0, sizeof(a));
  79         if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(tb[HR_TARGET]), &a))
  80                 return UBUS_STATUS_INVALID_ARGUMENT;
  81
  82
  83         iface = interface_ip_add_target_route(&a, v6);
  84         if (!iface)
  85                 return UBUS_STATUS_NOT_FOUND;
  86
  87         blob_buf_init(&b, 0);
  88         blobmsg_add_string(&b, "interface", iface->name);
  89         ubus_send_reply(ctx, req, b.head);
  90
  91         return 0;
  92 }
  93
  94 static int
  95 netifd_get_proto_handlers(struct ubus_context *ctx, struct ubus_object *obj,
  96                           struct ubus_request_data *req, const char *method,
  97                           struct blob_attr *msg)
  98 {
  99         blob_buf_init(&b, 0);
 100         proto_dump_handlers(&b);
 101         ubus_send_reply(ctx, req, b.head);
 102
 103         return 0;
 104 }
 105
 106 static struct ubus_method main_object_methods[] = {
 107         { .name = "restart", .handler = netifd_handle_restart },
 108         { .name = "reload", .handler = netifd_handle_reload },
 109         UBUS_METHOD("add_host_route", netifd_add_host_route, route_policy),
 110         { .name = "get_proto_handlers", .handler = netifd_get_proto_handlers },
 111 };
 112
 113 static struct ubus_object_type main_object_type =
 114         UBUS_OBJECT_TYPE("netifd", main_object_methods);
 115
 116 static struct ubus_object main_object = {
 117         .name = "network",
 118         .type = &main_object_type,
 119         .methods = main_object_methods,
 120         .n_methods = ARRAY_SIZE(main_object_methods),
 121 };
 122
 123 enum {
 124         DEV_NAME,
 125         __DEV_MAX,
 126 };
 127
 128 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
 129         [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 130 };
 131
 132 static int
 133 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
 134                   struct ubus_request_data *req, const char *method,
 135                   struct blob_attr *msg)
 136 {
 137         struct device *dev = NULL;
 138         struct blob_attr *tb[__DEV_MAX];
 139
 140         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 141
 142         if (tb[DEV_NAME]) {
 143                 dev = device_get(blobmsg_data(tb[DEV_NAME]), false);
 144                 if (!dev)
 145                         return UBUS_STATUS_INVALID_ARGUMENT;
 146         }
 147
 148         blob_buf_init(&b, 0);
 149         device_dump_status(&b, dev);
 150         ubus_send_reply(ctx, req, b.head);
 151
 152         return 0;
 153 }
 154
 155 enum {
 156         ALIAS_ATTR_ALIAS,
 157         ALIAS_ATTR_DEV,
 158         __ALIAS_ATTR_MAX,
 159 };
 160
 161 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
 162         [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
 163         [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
 164 };
 165
 166 static int
 167 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
 168                     struct ubus_request_data *req, const char *method,
 169                     struct blob_attr *msg)
 170 {
 171         struct device *dev = NULL;
 172         struct blob_attr *tb[__ALIAS_ATTR_MAX];
 173         struct blob_attr *cur;
 174         int rem;
 175
 176         blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
 177
 178         if (!tb[ALIAS_ATTR_ALIAS])
 179                 return UBUS_STATUS_INVALID_ARGUMENT;
 180
 181         if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
 182                 dev = device_get(blobmsg_data(cur), true);
 183                 if (!dev)
 184                         return UBUS_STATUS_NOT_FOUND;
 185         }
 186
 187         blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
 188                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 189                         goto error;
 190
 191                 if (!blobmsg_check_attr(cur, NULL))
 192                         goto error;
 193
 194                 alias_notify_device(blobmsg_data(cur), dev);
 195         }
 196         return 0;
 197
 198 error:
 199         device_free_unused(dev);
 200         return UBUS_STATUS_INVALID_ARGUMENT;
 201 }
 202
 203 enum {
 204         DEV_STATE_NAME,
 205         DEV_STATE_DEFER,
 206         __DEV_STATE_MAX,
 207 };
 208
 209 static const struct blobmsg_policy dev_state_policy[__DEV_STATE_MAX] = {
 210         [DEV_STATE_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 211         [DEV_STATE_DEFER] = { .name = "defer", .type = BLOBMSG_TYPE_BOOL },
 212 };
 213
 214 static int
 215 netifd_handle_set_state(struct ubus_context *ctx, struct ubus_object *obj,
 216                         struct ubus_request_data *req, const char *method,
 217                         struct blob_attr *msg)
 218 {
 219         struct device *dev = NULL;
 220         struct blob_attr *tb[__DEV_STATE_MAX];
 221         struct blob_attr *cur;
 222
 223         blobmsg_parse(dev_state_policy, __DEV_STATE_MAX, tb, blob_data(msg), blob_len(msg));
 224
 225         cur = tb[DEV_STATE_NAME];
 226         if (!cur)
 227                 return UBUS_STATUS_INVALID_ARGUMENT;
 228
 229         dev = device_get(blobmsg_data(cur), false);
 230         if (!dev)
 231                 return UBUS_STATUS_NOT_FOUND;
 232
 233         cur = tb[DEV_STATE_DEFER];
 234         if (cur)
 235                 device_set_deferred(dev, !!blobmsg_get_u8(cur));
 236
 237         return 0;
 238 }
 239
 240 static struct ubus_method dev_object_methods[] = {
 241         UBUS_METHOD("status", netifd_dev_status, dev_policy),
 242         UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
 243         UBUS_METHOD("set_state", netifd_handle_set_state, dev_state_policy),
 244 };
 245
 246 static struct ubus_object_type dev_object_type =
 247         UBUS_OBJECT_TYPE("device", dev_object_methods);
 248
 249 static struct ubus_object dev_object = {
 250         .name = "network.device",
 251         .type = &dev_object_type,
 252         .methods = dev_object_methods,
 253         .n_methods = ARRAY_SIZE(dev_object_methods),
 254 };
 255
 256 static void
 257 netifd_ubus_add_fd(void)
 258 {
 259         ubus_add_uloop(ctx);
 260         system_fd_set_cloexec(ctx->sock.fd);
 261 }
 262
 263 static void
 264 netifd_ubus_reconnect_timer(struct uloop_timeout *timeout)
 265 {
 266         static struct uloop_timeout retry = {
 267                 .cb = netifd_ubus_reconnect_timer,
 268         };
 269         int t = 2;
 270
 271         if (ubus_reconnect(ctx, ubus_path) != 0) {
 272                 DPRINTF("failed to reconnect, trying again in %d seconds\n", t);
 273                 uloop_timeout_set(&retry, t * 1000);
 274                 return;
 275         }
 276
 277         DPRINTF("reconnected to ubus, new id: %08x\n", ctx->local_id);
 278         netifd_ubus_add_fd();
 279 }
 280
 281 static void
 282 netifd_ubus_connection_lost(struct ubus_context *ctx)
 283 {
 284         netifd_ubus_reconnect_timer(NULL);
 285 }
 286
 287 /* per-interface object */
 288
 289 static int
 290 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
 291                  struct ubus_request_data *req, const char *method,
 292                  struct blob_attr *msg)
 293 {
 294         struct interface *iface;
 295
 296         iface = container_of(obj, struct interface, ubus);
 297         interface_set_up(iface);
 298
 299         return 0;
 300 }
 301
 302 static int
 303 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
 304                    struct ubus_request_data *req, const char *method,
 305                    struct blob_attr *msg)
 306 {
 307         struct interface *iface;
 308
 309         iface = container_of(obj, struct interface, ubus);
 310         interface_set_down(iface);
 311
 312         return 0;
 313 }
 314
 315 static void
 316 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
 317 {
 318         struct interface_error *error;
 319         void *e, *e2, *e3;
 320         int i;
 321
 322         e = blobmsg_open_array(b, "errors");
 323         list_for_each_entry(error, &iface->errors, list) {
 324                 e2 = blobmsg_open_table(b, NULL);
 325
 326                 blobmsg_add_string(b, "subsystem", error->subsystem);
 327                 blobmsg_add_string(b, "code", error->code);
 328                 if (error->data[0]) {
 329                         e3 = blobmsg_open_array(b, "data");
 330                         for (i = 0; error->data[i]; i++)
 331                                 blobmsg_add_string(b, NULL, error->data[i]);
 332                         blobmsg_close_array(b, e3);
 333                 }
 334
 335                 blobmsg_close_table(b, e2);
 336         }
 337         blobmsg_close_array(b, e);
 338 }
 339
 340 static void
 341 interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6,
 342                                bool enabled)
 343 {
 344         struct device_addr *addr;
 345         char *buf;
 346         void *a;
 347         int buflen = 128;
 348         int af;
 349
 350         time_t now = system_get_rtime();
 351         vlist_for_each_element(&ip->addr, addr, node) {
 352                 if (addr->enabled != enabled)
 353                         continue;
 354
 355                 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 356                         af = AF_INET;
 357                 else
 358                         af = AF_INET6;
 359
 360                 if (af != (v6 ? AF_INET6 : AF_INET))
 361                         continue;
 362
 363                 a = blobmsg_open_table(&b, NULL);
 364
 365                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 366                 inet_ntop(af, &addr->addr, buf, buflen);
 367                 blobmsg_add_string_buffer(&b);
 368
 369                 blobmsg_add_u32(&b, "mask", addr->mask);
 370
 371                 if (addr->preferred_until) {
 372                         int preferred = addr->preferred_until - now;
 373                         if (preferred < 0)
 374                                 preferred = 0;
 375                         blobmsg_add_u32(&b, "preferred", preferred);
 376                 }
 377
 378                 if (addr->valid_until)
 379                         blobmsg_add_u32(&b, "valid", addr->valid_until - now);
 380
 381                 blobmsg_close_table(&b, a);
 382         }
 383 }
 384
 385 static void
 386 interface_ip_dump_route_list(struct interface_ip_settings *ip, bool enabled)
 387 {
 388         struct device_route *route;
 389         int buflen = 128;
 390         char *buf;
 391         void *r;
 392         int af;
 393
 394         time_t now = system_get_rtime();
 395         vlist_for_each_element(&ip->route, route, node) {
 396                 if (route->enabled != enabled)
 397                         continue;
 398
 399                 if ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 400                         af = AF_INET;
 401                 else
 402                         af = AF_INET6;
 403
 404                 r = blobmsg_open_table(&b, NULL);
 405
 406                 buf = blobmsg_alloc_string_buffer(&b, "target", buflen);
 407                 inet_ntop(af, &route->addr, buf, buflen);
 408                 blobmsg_add_string_buffer(&b);
 409
 410                 blobmsg_add_u32(&b, "mask", route->mask);
 411
 412                 buf = blobmsg_alloc_string_buffer(&b, "nexthop", buflen);
 413                 inet_ntop(af, &route->nexthop, buf, buflen);
 414                 blobmsg_add_string_buffer(&b);
 415
 416                 if (route->flags & DEVROUTE_MTU)
 417                         blobmsg_add_u32(&b, "mtu", route->mtu);
 418
 419                 if (route->flags & DEVROUTE_METRIC)
 420                         blobmsg_add_u32(&b, "metric", route->metric);
 421
 422                 if (route->valid_until)
 423                         blobmsg_add_u32(&b, "valid", route->valid_until - now);
 424
 425                 blobmsg_close_table(&b, r);
 426         }
 427 }
 428
 429
 430 static void
 431 interface_ip_dump_prefix_list(struct interface_ip_settings *ip)
 432 {
 433         struct device_prefix *prefix;
 434         char *buf;
 435         void *a, *c;
 436         const int buflen = INET6_ADDRSTRLEN;
 437
 438         time_t now = system_get_rtime();
 439         vlist_for_each_element(&ip->prefix, prefix, node) {
 440                 a = blobmsg_open_table(&b, NULL);
 441
 442                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 443                 inet_ntop(AF_INET6, &prefix->addr, buf, buflen);
 444                 blobmsg_add_string_buffer(&b);
 445
 446                 blobmsg_add_u32(&b, "mask", prefix->length);
 447
 448                 if (prefix->preferred_until) {
 449                         int preferred = prefix->preferred_until - now;
 450                         if (preferred < 0)
 451                                 preferred = 0;
 452                         blobmsg_add_u32(&b, "preferred", preferred);
 453                 }
 454
 455                 if (prefix->valid_until)
 456                         blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 457
 458                 c = blobmsg_open_table(&b, "assigned");
 459                 struct device_prefix_assignment *assign;
 460                 list_for_each_entry(assign, &prefix->assignments, head) {
 461                         if (!assign->name[0])
 462                                 continue;
 463
 464                         struct in6_addr addr = prefix->addr;
 465                         addr.s6_addr32[1] |= htonl(assign->assigned);
 466
 467                         void *d = blobmsg_open_table(&b, assign->name);
 468
 469                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 470                         inet_ntop(AF_INET6, &addr, buf, buflen);
 471                         blobmsg_add_string_buffer(&b);
 472
 473                         blobmsg_add_u32(&b, "mask", assign->length);
 474
 475                         blobmsg_close_table(&b, d);
 476                 }
 477                 blobmsg_close_table(&b, c);
 478
 479                 blobmsg_close_table(&b, a);
 480         }
 481 }
 482
 483
 484 static void
 485 interface_ip_dump_prefix_assignment_list(struct interface *iface)
 486 {
 487         void *a;
 488         char *buf;
 489         const int buflen = INET6_ADDRSTRLEN;
 490         time_t now = system_get_rtime();
 491
 492         struct device_prefix *prefix;
 493         list_for_each_entry(prefix, &prefixes, head) {
 494                 struct device_prefix_assignment *assign;
 495                 list_for_each_entry(assign, &prefix->assignments, head) {
 496                         if (strcmp(assign->name, iface->name))
 497                                 continue;
 498
 499                         struct in6_addr addr = prefix->addr;
 500                         addr.s6_addr32[1] |= htonl(assign->assigned);
 501
 502                         a = blobmsg_open_table(&b, NULL);
 503
 504                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 505                         inet_ntop(AF_INET6, &addr, buf, buflen);
 506                         blobmsg_add_string_buffer(&b);
 507
 508                         blobmsg_add_u32(&b, "mask", assign->length);
 509
 510                         if (prefix->preferred_until) {
 511                                 int preferred = prefix->preferred_until - now;
 512                                 if (preferred < 0)
 513                                         preferred = 0;
 514                                 blobmsg_add_u32(&b, "preferred", preferred);
 515                         }
 516
 517                         if (prefix->valid_until)
 518                                 blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 519
 520                         blobmsg_close_table(&b, a);
 521                 }
 522         }
 523 }
 524
 525
 526 static void
 527 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip,
 528                                   bool enabled)
 529 {
 530         struct dns_server *dns;
 531         int buflen = 128;
 532         char *buf;
 533
 534         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 535                 if (ip->no_dns == enabled)
 536                         continue;
 537
 538                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 539                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 540                 blobmsg_add_string_buffer(&b);
 541         }
 542 }
 543
 544 static void
 545 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip,
 546                                   bool enabled)
 547 {
 548         struct dns_search_domain *dns;
 549
 550         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 551                 if (ip->no_dns == enabled)
 552                         continue;
 553
 554                 blobmsg_add_string(&b, NULL, dns->name);
 555         }
 556 }
 557
 558 static int
 559 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 560                      struct ubus_request_data *req, const char *method,
 561                      struct blob_attr *msg)
 562 {
 563         struct interface *iface;
 564         struct interface_data *data;
 565         struct device *dev;
 566         void *a, *inactive;
 567
 568         iface = container_of(obj, struct interface, ubus);
 569
 570         blob_buf_init(&b, 0);
 571         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 572         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 573         blobmsg_add_u8(&b, "available", iface->available);
 574         blobmsg_add_u8(&b, "autostart", iface->autostart);
 575
 576         if (iface->state == IFS_UP) {
 577                 time_t cur = system_get_rtime();
 578                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 579                 blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 580         }
 581
 582         if (iface->proto_handler)
 583                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 584
 585         dev = iface->main_dev.dev;
 586         if (dev && !dev->hidden &&
 587             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 588                 blobmsg_add_string(&b, "device", dev->ifname);
 589
 590         if (iface->state == IFS_UP) {
 591                 blobmsg_add_u32(&b, "metric", iface->metric);
 592                 a = blobmsg_open_array(&b, "ipv4-address");
 593                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 594                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 595                 blobmsg_close_array(&b, a);
 596                 a = blobmsg_open_array(&b, "ipv6-address");
 597                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 598                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 599                 blobmsg_close_array(&b, a);
 600                 a = blobmsg_open_array(&b, "ipv6-prefix");
 601                 interface_ip_dump_prefix_list(&iface->config_ip);
 602                 interface_ip_dump_prefix_list(&iface->proto_ip);
 603                 blobmsg_close_array(&b, a);
 604                 a = blobmsg_open_array(&b, "ipv6-prefix-assignment");
 605                 interface_ip_dump_prefix_assignment_list(iface);
 606                 blobmsg_close_array(&b, a);
 607                 a = blobmsg_open_array(&b, "route");
 608                 interface_ip_dump_route_list(&iface->config_ip, true);
 609                 interface_ip_dump_route_list(&iface->proto_ip, true);
 610                 blobmsg_close_array(&b, a);
 611                 a = blobmsg_open_array(&b, "dns-server");
 612                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 613                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 614                 blobmsg_close_array(&b, a);
 615                 a = blobmsg_open_array(&b, "dns-search");
 616                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 617                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 618                 blobmsg_close_array(&b, a);
 619
 620                 inactive = blobmsg_open_table(&b, "inactive");
 621                 a = blobmsg_open_array(&b, "ipv4-address");
 622                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 623                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 624                 blobmsg_close_array(&b, a);
 625                 a = blobmsg_open_array(&b, "ipv6-address");
 626                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 627                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 628                 blobmsg_close_array(&b, a);
 629                 a = blobmsg_open_array(&b, "route");
 630                 interface_ip_dump_route_list(&iface->config_ip, false);
 631                 interface_ip_dump_route_list(&iface->proto_ip, false);
 632                 blobmsg_close_array(&b, a);
 633                 a = blobmsg_open_array(&b, "dns-server");
 634                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 635                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 636                 blobmsg_close_array(&b, a);
 637                 a = blobmsg_open_array(&b, "dns-search");
 638                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 639                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 640                 blobmsg_close_array(&b, a);
 641                 blobmsg_close_table(&b, inactive);
 642         }
 643
 644         a = blobmsg_open_table(&b, "data");
 645         avl_for_each_element(&iface->data, data, node)
 646                 blob_put(&b, blob_id(data->data), blob_data(data->data), blob_len(data->data));
 647
 648         blobmsg_close_table(&b, a);
 649
 650         if (!list_is_empty(&iface->errors))
 651                 netifd_add_interface_errors(&b, iface);
 652
 653         ubus_send_reply(ctx, req, b.head);
 654
 655         return 0;
 656 }
 657
 658 static int
 659 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 660                            struct ubus_request_data *req, const char *method,
 661                            struct blob_attr *msg)
 662 {
 663         struct blob_attr *tb[__DEV_MAX];
 664         struct interface *iface;
 665         struct device *dev;
 666         bool add = !strncmp(method, "add", 3);
 667         int ret;
 668
 669         iface = container_of(obj, struct interface, ubus);
 670
 671         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 672
 673         if (!tb[DEV_NAME])
 674                 return UBUS_STATUS_INVALID_ARGUMENT;
 675
 676         device_lock();
 677
 678         dev = device_get(blobmsg_data(tb[DEV_NAME]), add ? 2 : 0);
 679         if (!dev) {
 680                 ret = UBUS_STATUS_NOT_FOUND;
 681                 goto out;
 682         }
 683
 684         if (add) {
 685                 device_set_present(dev, true);
 686                 if (iface->device_config)
 687                         device_set_config(dev, &simple_device_type, iface->config);
 688
 689                 system_if_apply_settings(dev, &dev->settings);
 690                 ret = interface_add_link(iface, dev);
 691         } else {
 692                 ret = interface_remove_link(iface, dev);
 693         }
 694
 695 out:
 696         device_unlock();
 697
 698         return ret;
 699 }
 700
 701
 702 static int
 703 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 704                           struct ubus_request_data *req, const char *method,
 705                           struct blob_attr *msg)
 706 {
 707         struct interface *iface;
 708
 709         iface = container_of(obj, struct interface, ubus);
 710
 711         if (!iface->proto || !iface->proto->notify)
 712                 return UBUS_STATUS_NOT_SUPPORTED;
 713
 714         return iface->proto->notify(iface->proto, msg);
 715 }
 716
 717 static void
 718 netifd_iface_do_remove(struct uloop_timeout *timeout)
 719 {
 720         struct interface *iface;
 721
 722         iface = container_of(timeout, struct interface, remove_timer);
 723         vlist_delete(&interfaces, &iface->node);
 724 }
 725
 726 static int
 727 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 728                     struct ubus_request_data *req, const char *method,
 729                     struct blob_attr *msg)
 730 {
 731         struct interface *iface;
 732
 733         iface = container_of(obj, struct interface, ubus);
 734         if (iface->remove_timer.cb)
 735                 return UBUS_STATUS_INVALID_ARGUMENT;
 736
 737         iface->remove_timer.cb = netifd_iface_do_remove;
 738         uloop_timeout_set(&iface->remove_timer, 100);
 739         return 0;
 740 }
 741
 742 static int
 743 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 744                             struct ubus_request_data *req, const char *method,
 745                             struct blob_attr *msg)
 746 {
 747         struct interface *iface;
 748         struct device *dev;
 749         const struct device_hotplug_ops *ops;
 750
 751         iface = container_of(obj, struct interface, ubus);
 752         dev = iface->main_dev.dev;
 753         if (!dev)
 754                 return 0;
 755
 756         ops = dev->hotplug_ops;
 757         if (!ops)
 758                 return 0;
 759
 760         return ops->prepare(dev);
 761 }
 762
 763 static int
 764 netifd_handle_set_data(struct ubus_context *ctx, struct ubus_object *obj,
 765                        struct ubus_request_data *req, const char *method,
 766                        struct blob_attr *msg)
 767 {
 768         struct interface *iface;
 769         struct blob_attr *cur;
 770         int rem, ret;
 771
 772         iface = container_of(obj, struct interface, ubus);
 773
 774         blob_for_each_attr(cur, msg, rem) {
 775                 ret = interface_add_data(iface, cur);
 776                 if (ret)
 777                         return ret;
 778         }
 779
 780         return 0;
 781 }
 782
 783 static struct ubus_method iface_object_methods[] = {
 784         { .name = "up", .handler = netifd_handle_up },
 785         { .name = "down", .handler = netifd_handle_down },
 786         { .name = "status", .handler = netifd_handle_status },
 787         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 788         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_policy ),
 789         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_policy ),
 790         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 791         { .name = "remove", .handler = netifd_iface_remove },
 792         { .name = "set_data", .handler = netifd_handle_set_data },
 793 };
 794
 795 static struct ubus_object_type iface_object_type =
 796         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 797
 798
 799 static struct ubus_object iface_object = {
 800         .name = "network.interface",
 801         .type = &iface_object_type,
 802         .n_methods = ARRAY_SIZE(iface_object_methods),
 803 };
 804
 805 static void netifd_add_object(struct ubus_object *obj)
 806 {
 807         int ret = ubus_add_object(ctx, obj);
 808
 809         if (ret != 0)
 810                 fprintf(stderr, "Failed to publish object '%s': %s\n", obj->name, ubus_strerror(ret));
 811 }
 812
 813 static const struct blobmsg_policy iface_policy = {
 814         .name = "interface",
 815         .type = BLOBMSG_TYPE_STRING,
 816 };
 817
 818 static int
 819 netifd_handle_iface(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 blob_attr *tb;
 825         int i;
 826
 827         blobmsg_parse(&iface_policy, 1, &tb, blob_data(msg), blob_len(msg));
 828         if (!tb)
 829                 return UBUS_STATUS_INVALID_ARGUMENT;
 830
 831         iface = vlist_find(&interfaces, blobmsg_data(tb), iface, node);
 832         if (!iface)
 833                 return UBUS_STATUS_NOT_FOUND;
 834
 835         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 836                 ubus_handler_t cb;
 837
 838                 if (strcmp(method, iface_object_methods[i].name) != 0)
 839                         continue;
 840
 841                 cb = iface_object_methods[i].handler;
 842                 return cb(ctx, &iface->ubus, req, method, msg);
 843         }
 844
 845         return UBUS_STATUS_INVALID_ARGUMENT;
 846 }
 847
 848 static void netifd_add_iface_object(void)
 849 {
 850         struct ubus_method *methods;
 851         int i;
 852
 853         methods = calloc(1, sizeof(iface_object_methods));
 854         memcpy(methods, iface_object_methods, sizeof(iface_object_methods));
 855         iface_object.methods = methods;
 856
 857         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 858                 methods[i].handler = netifd_handle_iface;
 859                 methods[i].policy = &iface_policy;
 860                 methods[i].n_policy = 1;
 861         }
 862         netifd_add_object(&iface_object);
 863 }
 864
 865 int
 866 netifd_ubus_init(const char *path)
 867 {
 868         uloop_init();
 869         ubus_path = path;
 870
 871         ctx = ubus_connect(path);
 872         if (!ctx)
 873                 return -EIO;
 874
 875         DPRINTF("connected as %08x\n", ctx->local_id);
 876         ctx->connection_lost = netifd_ubus_connection_lost;
 877         netifd_ubus_add_fd();
 878
 879         netifd_add_object(&main_object);
 880         netifd_add_object(&dev_object);
 881         netifd_add_iface_object();
 882
 883         return 0;
 884 }
 885
 886 void
 887 netifd_ubus_done(void)
 888 {
 889         ubus_free(ctx);
 890 }
 891
 892 void
 893 netifd_ubus_interface_event(struct interface *iface, bool up)
 894 {
 895         blob_buf_init(&b, 0);
 896         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
 897         blobmsg_add_string(&b, "interface", iface->name);
 898         ubus_send_event(ctx, "network.interface", b.head);
 899 }
 900
 901 void
 902 netifd_ubus_add_interface(struct interface *iface)
 903 {
 904         struct ubus_object *obj = &iface->ubus;
 905         char *name = NULL;
 906
 907         if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
 908                 return;
 909
 910         obj->name = name;
 911         obj->type = &iface_object_type;
 912         obj->methods = iface_object_methods;
 913         obj->n_methods = ARRAY_SIZE(iface_object_methods);
 914         if (ubus_add_object(ctx, &iface->ubus)) {
 915                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
 916                 free(name);
 917                 obj->name = NULL;
 918         }
 919 }
 920
 921 void
 922 netifd_ubus_remove_interface(struct interface *iface)
 923 {
 924         if (!iface->ubus.name)
 925                 return;
 926
 927         ubus_remove_object(ctx, &iface->ubus);
 928         free((void *) iface->ubus.name);
 929 }