ubus.c

   1 /*
   2  * netifd - network interface daemon
   3  * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #define _GNU_SOURCE
  15
  16 #include <arpa/inet.h>
  17 #include <string.h>
  18 #include <stdio.h>
  19
  20 #include "netifd.h"
  21 #include "interface.h"
  22 #include "proto.h"
  23 #include "ubus.h"
  24 #include "system.h"
  25
  26 static struct ubus_context *ctx = NULL;
  27 static struct blob_buf b;
  28 static const char *ubus_path;
  29
  30 /* global object */
  31
  32 static int
  33 netifd_handle_restart(struct ubus_context *ctx, struct ubus_object *obj,
  34                       struct ubus_request_data *req, const char *method,
  35                       struct blob_attr *msg)
  36 {
  37         netifd_restart();
  38         return 0;
  39 }
  40
  41 static int
  42 netifd_handle_reload(struct ubus_context *ctx, struct ubus_object *obj,
  43                      struct ubus_request_data *req, const char *method,
  44                      struct blob_attr *msg)
  45 {
  46         netifd_reload();
  47         return 0;
  48 }
  49
  50 enum {
  51         HR_TARGET,
  52         HR_V6,
  53         HR_INTERFACE,
  54         __HR_MAX
  55 };
  56
  57 static const struct blobmsg_policy route_policy[__HR_MAX] = {
  58         [HR_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
  59         [HR_V6] = { .name = "v6", .type = BLOBMSG_TYPE_BOOL },
  60         [HR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
  61 };
  62
  63 static int
  64 netifd_add_host_route(struct ubus_context *ctx, struct ubus_object *obj,
  65                       struct ubus_request_data *req, const char *method,
  66                       struct blob_attr *msg)
  67 {
  68         struct blob_attr *tb[__HR_MAX];
  69         struct interface *iface = NULL;
  70         union if_addr a;
  71         bool v6 = false;
  72
  73         blobmsg_parse(route_policy, __HR_MAX, tb, blob_data(msg), blob_len(msg));
  74         if (!tb[HR_TARGET])
  75                 return UBUS_STATUS_INVALID_ARGUMENT;
  76
  77         if (tb[HR_V6])
  78                 v6 = blobmsg_get_bool(tb[HR_V6]);
  79
  80         if (tb[HR_INTERFACE])
  81                 iface = vlist_find(&interfaces, blobmsg_data(tb[HR_INTERFACE]), iface, node);
  82
  83         memset(&a, 0, sizeof(a));
  84         if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(tb[HR_TARGET]), &a))
  85                 return UBUS_STATUS_INVALID_ARGUMENT;
  86
  87
  88         iface = interface_ip_add_target_route(&a, v6, iface);
  89         if (!iface)
  90                 return UBUS_STATUS_NOT_FOUND;
  91
  92         blob_buf_init(&b, 0);
  93         blobmsg_add_string(&b, "interface", iface->name);
  94         ubus_send_reply(ctx, req, b.head);
  95
  96         return 0;
  97 }
  98
  99 static int
 100 netifd_get_proto_handlers(struct ubus_context *ctx, struct ubus_object *obj,
 101                           struct ubus_request_data *req, const char *method,
 102                           struct blob_attr *msg)
 103 {
 104         blob_buf_init(&b, 0);
 105         proto_dump_handlers(&b);
 106         ubus_send_reply(ctx, req, b.head);
 107
 108         return 0;
 109 }
 110
 111
 112 enum {
 113         DI_NAME,
 114         __DI_MAX
 115 };
 116
 117 static const struct blobmsg_policy dynamic_policy[__DI_MAX] = {
 118         [DI_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 119 };
 120
 121 static int
 122 netifd_add_dynamic(struct ubus_context *ctx, struct ubus_object *obj,
 123                       struct ubus_request_data *req, const char *method,
 124                       struct blob_attr *msg)
 125 {
 126         struct blob_attr *tb[__DI_MAX];
 127         struct interface *iface;
 128         struct blob_attr *config;
 129         struct device *dev;
 130
 131         blobmsg_parse(dynamic_policy, __DI_MAX, tb, blob_data(msg), blob_len(msg));
 132
 133         if (!tb[DI_NAME])
 134                 return UBUS_STATUS_INVALID_ARGUMENT;
 135
 136         const char *name = blobmsg_get_string(tb[DI_NAME]);
 137
 138         iface = calloc(1, sizeof(*iface));
 139         if (!iface)
 140                 return UBUS_STATUS_UNKNOWN_ERROR;
 141
 142         interface_init(iface, name, msg, true);
 143         iface->device_config = true;
 144
 145         config = blob_memdup(msg);
 146         if (!config)
 147                 goto error;
 148
 149         interface_add(iface, config);
 150
 151         // need to look up the interface name again, in case of config update,
 152         iface = vlist_find(&interfaces, name, iface, node);
 153         if (!iface)
 154                 return UBUS_STATUS_UNKNOWN_ERROR;
 155
 156         dev = iface->main_dev.dev;
 157         if (!dev || !dev->default_config)
 158                 return UBUS_STATUS_UNKNOWN_ERROR;
 159
 160         device_set_config(dev, dev->type, msg);
 161         return UBUS_STATUS_OK;
 162
 163 error:
 164         free(iface);
 165         return UBUS_STATUS_UNKNOWN_ERROR;
 166 }
 167
 168 static struct ubus_method main_object_methods[] = {
 169         { .name = "restart", .handler = netifd_handle_restart },
 170         { .name = "reload", .handler = netifd_handle_reload },
 171         UBUS_METHOD("add_host_route", netifd_add_host_route, route_policy),
 172         { .name = "get_proto_handlers", .handler = netifd_get_proto_handlers },
 173         UBUS_METHOD("add_dynamic", netifd_add_dynamic, dynamic_policy),
 174 };
 175
 176 static struct ubus_object_type main_object_type =
 177         UBUS_OBJECT_TYPE("netifd", main_object_methods);
 178
 179 static struct ubus_object main_object = {
 180         .name = "network",
 181         .type = &main_object_type,
 182         .methods = main_object_methods,
 183         .n_methods = ARRAY_SIZE(main_object_methods),
 184 };
 185
 186 enum {
 187         DEV_NAME,
 188         __DEV_MAX,
 189 };
 190
 191 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
 192         [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 193 };
 194
 195 static int
 196 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
 197                   struct ubus_request_data *req, const char *method,
 198                   struct blob_attr *msg)
 199 {
 200         struct device *dev = NULL;
 201         struct blob_attr *tb[__DEV_MAX];
 202
 203         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 204
 205         if (tb[DEV_NAME]) {
 206                 dev = device_get(blobmsg_data(tb[DEV_NAME]), false);
 207                 if (!dev)
 208                         return UBUS_STATUS_INVALID_ARGUMENT;
 209         }
 210
 211         blob_buf_init(&b, 0);
 212         device_dump_status(&b, dev);
 213         ubus_send_reply(ctx, req, b.head);
 214
 215         return 0;
 216 }
 217
 218 enum {
 219         ALIAS_ATTR_ALIAS,
 220         ALIAS_ATTR_DEV,
 221         __ALIAS_ATTR_MAX,
 222 };
 223
 224 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
 225         [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
 226         [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
 227 };
 228
 229 static int
 230 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
 231                     struct ubus_request_data *req, const char *method,
 232                     struct blob_attr *msg)
 233 {
 234         struct device *dev = NULL;
 235         struct blob_attr *tb[__ALIAS_ATTR_MAX];
 236         struct blob_attr *cur;
 237         int rem;
 238
 239         blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
 240
 241         if (!tb[ALIAS_ATTR_ALIAS])
 242                 return UBUS_STATUS_INVALID_ARGUMENT;
 243
 244         if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
 245                 dev = device_get(blobmsg_data(cur), true);
 246                 if (!dev)
 247                         return UBUS_STATUS_NOT_FOUND;
 248         }
 249
 250         blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
 251                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 252                         goto error;
 253
 254                 if (!blobmsg_check_attr(cur, NULL))
 255                         goto error;
 256
 257                 alias_notify_device(blobmsg_data(cur), dev);
 258         }
 259         return 0;
 260
 261 error:
 262         device_free_unused(dev);
 263         return UBUS_STATUS_INVALID_ARGUMENT;
 264 }
 265
 266 enum {
 267         DEV_STATE_NAME,
 268         DEV_STATE_DEFER,
 269         __DEV_STATE_MAX,
 270 };
 271
 272 static const struct blobmsg_policy dev_state_policy[__DEV_STATE_MAX] = {
 273         [DEV_STATE_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 274         [DEV_STATE_DEFER] = { .name = "defer", .type = BLOBMSG_TYPE_BOOL },
 275 };
 276
 277 static int
 278 netifd_handle_set_state(struct ubus_context *ctx, struct ubus_object *obj,
 279                         struct ubus_request_data *req, const char *method,
 280                         struct blob_attr *msg)
 281 {
 282         struct device *dev = NULL;
 283         struct blob_attr *tb[__DEV_STATE_MAX];
 284         struct blob_attr *cur;
 285
 286         blobmsg_parse(dev_state_policy, __DEV_STATE_MAX, tb, blob_data(msg), blob_len(msg));
 287
 288         cur = tb[DEV_STATE_NAME];
 289         if (!cur)
 290                 return UBUS_STATUS_INVALID_ARGUMENT;
 291
 292         dev = device_get(blobmsg_data(cur), false);
 293         if (!dev)
 294                 return UBUS_STATUS_NOT_FOUND;
 295
 296         cur = tb[DEV_STATE_DEFER];
 297         if (cur)
 298                 device_set_deferred(dev, !!blobmsg_get_u8(cur));
 299
 300         return 0;
 301 }
 302
 303 static struct ubus_method dev_object_methods[] = {
 304         UBUS_METHOD("status", netifd_dev_status, dev_policy),
 305         UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
 306         UBUS_METHOD("set_state", netifd_handle_set_state, dev_state_policy),
 307 };
 308
 309 static struct ubus_object_type dev_object_type =
 310         UBUS_OBJECT_TYPE("device", dev_object_methods);
 311
 312 static struct ubus_object dev_object = {
 313         .name = "network.device",
 314         .type = &dev_object_type,
 315         .methods = dev_object_methods,
 316         .n_methods = ARRAY_SIZE(dev_object_methods),
 317 };
 318
 319 static void
 320 netifd_ubus_add_fd(void)
 321 {
 322         ubus_add_uloop(ctx);
 323         system_fd_set_cloexec(ctx->sock.fd);
 324 }
 325
 326 static void
 327 netifd_ubus_reconnect_timer(struct uloop_timeout *timeout)
 328 {
 329         static struct uloop_timeout retry = {
 330                 .cb = netifd_ubus_reconnect_timer,
 331         };
 332         int t = 2;
 333
 334         if (ubus_reconnect(ctx, ubus_path) != 0) {
 335                 DPRINTF("failed to reconnect, trying again in %d seconds\n", t);
 336                 uloop_timeout_set(&retry, t * 1000);
 337                 return;
 338         }
 339
 340         DPRINTF("reconnected to ubus, new id: %08x\n", ctx->local_id);
 341         netifd_ubus_add_fd();
 342 }
 343
 344 static void
 345 netifd_ubus_connection_lost(struct ubus_context *ctx)
 346 {
 347         netifd_ubus_reconnect_timer(NULL);
 348 }
 349
 350 /* per-interface object */
 351
 352 static int
 353 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
 354                  struct ubus_request_data *req, const char *method,
 355                  struct blob_attr *msg)
 356 {
 357         struct interface *iface;
 358
 359         iface = container_of(obj, struct interface, ubus);
 360         interface_set_up(iface);
 361
 362         return 0;
 363 }
 364
 365 static int
 366 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
 367                    struct ubus_request_data *req, const char *method,
 368                    struct blob_attr *msg)
 369 {
 370         struct interface *iface;
 371
 372         iface = container_of(obj, struct interface, ubus);
 373         interface_set_down(iface);
 374
 375         return 0;
 376 }
 377
 378 static void
 379 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
 380 {
 381         struct interface_error *error;
 382         void *e, *e2, *e3;
 383         int i;
 384
 385         e = blobmsg_open_array(b, "errors");
 386         list_for_each_entry(error, &iface->errors, list) {
 387                 e2 = blobmsg_open_table(b, NULL);
 388
 389                 blobmsg_add_string(b, "subsystem", error->subsystem);
 390                 blobmsg_add_string(b, "code", error->code);
 391                 if (error->data[0]) {
 392                         e3 = blobmsg_open_array(b, "data");
 393                         for (i = 0; error->data[i]; i++)
 394                                 blobmsg_add_string(b, NULL, error->data[i]);
 395                         blobmsg_close_array(b, e3);
 396                 }
 397
 398                 blobmsg_close_table(b, e2);
 399         }
 400         blobmsg_close_array(b, e);
 401 }
 402
 403 static void
 404 interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6,
 405                                bool enabled)
 406 {
 407         struct device_addr *addr;
 408         char *buf;
 409         void *a;
 410         int buflen = 128;
 411         int af;
 412
 413         time_t now = system_get_rtime();
 414         vlist_for_each_element(&ip->addr, addr, node) {
 415                 if (addr->enabled != enabled)
 416                         continue;
 417
 418                 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 419                         af = AF_INET;
 420                 else
 421                         af = AF_INET6;
 422
 423                 if (af != (v6 ? AF_INET6 : AF_INET))
 424                         continue;
 425
 426                 a = blobmsg_open_table(&b, NULL);
 427
 428                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 429                 inet_ntop(af, &addr->addr, buf, buflen);
 430                 blobmsg_add_string_buffer(&b);
 431
 432                 blobmsg_add_u32(&b, "mask", addr->mask);
 433
 434                 if (addr->preferred_until) {
 435                         int preferred = addr->preferred_until - now;
 436                         if (preferred < 0)
 437                                 preferred = 0;
 438                         blobmsg_add_u32(&b, "preferred", preferred);
 439                 }
 440
 441                 if (addr->valid_until)
 442                         blobmsg_add_u32(&b, "valid", addr->valid_until - now);
 443
 444                 blobmsg_close_table(&b, a);
 445         }
 446 }
 447
 448 static void
 449 interface_ip_dump_route_list(struct interface_ip_settings *ip, bool enabled)
 450 {
 451         struct device_route *route;
 452         int buflen = 128;
 453         char *buf;
 454         void *r;
 455         int af;
 456
 457         time_t now = system_get_rtime();
 458         vlist_for_each_element(&ip->route, route, node) {
 459                 if (route->enabled != enabled)
 460                         continue;
 461
 462                 if ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 463                         af = AF_INET;
 464                 else
 465                         af = AF_INET6;
 466
 467                 r = blobmsg_open_table(&b, NULL);
 468
 469                 buf = blobmsg_alloc_string_buffer(&b, "target", buflen);
 470                 inet_ntop(af, &route->addr, buf, buflen);
 471                 blobmsg_add_string_buffer(&b);
 472
 473                 blobmsg_add_u32(&b, "mask", route->mask);
 474
 475                 buf = blobmsg_alloc_string_buffer(&b, "nexthop", buflen);
 476                 inet_ntop(af, &route->nexthop, buf, buflen);
 477                 blobmsg_add_string_buffer(&b);
 478
 479                 if (route->flags & DEVROUTE_MTU)
 480                         blobmsg_add_u32(&b, "mtu", route->mtu);
 481
 482                 if (route->flags & DEVROUTE_METRIC)
 483                         blobmsg_add_u32(&b, "metric", route->metric);
 484
 485                 if (route->flags & DEVROUTE_TABLE)
 486                         blobmsg_add_u32(&b, "table", route->table);
 487
 488                 if (route->valid_until)
 489                         blobmsg_add_u32(&b, "valid", route->valid_until - now);
 490
 491                 blobmsg_close_table(&b, r);
 492         }
 493 }
 494
 495
 496 static void
 497 interface_ip_dump_prefix_list(struct interface_ip_settings *ip)
 498 {
 499         struct device_prefix *prefix;
 500         char *buf;
 501         void *a, *c;
 502         const int buflen = INET6_ADDRSTRLEN;
 503
 504         time_t now = system_get_rtime();
 505         vlist_for_each_element(&ip->prefix, prefix, node) {
 506                 a = blobmsg_open_table(&b, NULL);
 507
 508                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 509                 inet_ntop(AF_INET6, &prefix->addr, buf, buflen);
 510                 blobmsg_add_string_buffer(&b);
 511
 512                 blobmsg_add_u32(&b, "mask", prefix->length);
 513
 514                 if (prefix->preferred_until) {
 515                         int preferred = prefix->preferred_until - now;
 516                         if (preferred < 0)
 517                                 preferred = 0;
 518                         blobmsg_add_u32(&b, "preferred", preferred);
 519                 }
 520
 521                 if (prefix->valid_until)
 522                         blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 523
 524                 blobmsg_add_string(&b, "class", prefix->pclass);
 525
 526                 c = blobmsg_open_table(&b, "assigned");
 527                 struct device_prefix_assignment *assign;
 528                 list_for_each_entry(assign, &prefix->assignments, head) {
 529                         if (!assign->name[0])
 530                                 continue;
 531
 532                         struct in6_addr addr = prefix->addr;
 533                         addr.s6_addr32[1] |= htonl(assign->assigned);
 534
 535                         void *d = blobmsg_open_table(&b, assign->name);
 536
 537                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 538                         inet_ntop(AF_INET6, &addr, buf, buflen);
 539                         blobmsg_add_string_buffer(&b);
 540
 541                         blobmsg_add_u32(&b, "mask", assign->length);
 542
 543                         blobmsg_close_table(&b, d);
 544                 }
 545                 blobmsg_close_table(&b, c);
 546
 547                 blobmsg_close_table(&b, a);
 548         }
 549 }
 550
 551
 552 static void
 553 interface_ip_dump_prefix_assignment_list(struct interface *iface)
 554 {
 555         void *a;
 556         char *buf;
 557         const int buflen = INET6_ADDRSTRLEN;
 558         time_t now = system_get_rtime();
 559
 560         struct device_prefix *prefix;
 561         list_for_each_entry(prefix, &prefixes, head) {
 562                 struct device_prefix_assignment *assign;
 563                 list_for_each_entry(assign, &prefix->assignments, head) {
 564                         if (strcmp(assign->name, iface->name))
 565                                 continue;
 566
 567                         struct in6_addr addr = prefix->addr;
 568                         addr.s6_addr32[1] |= htonl(assign->assigned);
 569
 570                         a = blobmsg_open_table(&b, NULL);
 571
 572                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 573                         inet_ntop(AF_INET6, &addr, buf, buflen);
 574                         blobmsg_add_string_buffer(&b);
 575
 576                         blobmsg_add_u32(&b, "mask", assign->length);
 577
 578                         if (prefix->preferred_until) {
 579                                 int preferred = prefix->preferred_until - now;
 580                                 if (preferred < 0)
 581                                         preferred = 0;
 582                                 blobmsg_add_u32(&b, "preferred", preferred);
 583                         }
 584
 585                         if (prefix->valid_until)
 586                                 blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 587
 588                         blobmsg_close_table(&b, a);
 589                 }
 590         }
 591 }
 592
 593
 594 static void
 595 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip,
 596                                   bool enabled)
 597 {
 598         struct dns_server *dns;
 599         int buflen = 128;
 600         char *buf;
 601
 602         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 603                 if (ip->no_dns == enabled)
 604                         continue;
 605
 606                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 607                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 608                 blobmsg_add_string_buffer(&b);
 609         }
 610 }
 611
 612 static void
 613 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip,
 614                                   bool enabled)
 615 {
 616         struct dns_search_domain *dns;
 617
 618         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 619                 if (ip->no_dns == enabled)
 620                         continue;
 621
 622                 blobmsg_add_string(&b, NULL, dns->name);
 623         }
 624 }
 625
 626 static void
 627 netifd_dump_status(struct interface *iface)
 628 {
 629         struct interface_data *data;
 630         struct device *dev;
 631         void *a, *inactive;
 632
 633         blobmsg_add_string(&b, "name", iface->name);
 634         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 635         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 636         blobmsg_add_u8(&b, "available", iface->available);
 637         blobmsg_add_u8(&b, "autostart", iface->autostart);
 638
 639         if (iface->state == IFS_UP) {
 640                 time_t cur = system_get_rtime();
 641                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 642                 blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 643         }
 644
 645         if (iface->proto_handler)
 646                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 647
 648         dev = iface->main_dev.dev;
 649         if (dev && !dev->hidden &&
 650             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 651                 blobmsg_add_string(&b, "device", dev->ifname);
 652
 653         if (iface->state == IFS_UP) {
 654                 blobmsg_add_u32(&b, "metric", iface->metric);
 655                 a = blobmsg_open_array(&b, "ipv4-address");
 656                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 657                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 658                 blobmsg_close_array(&b, a);
 659                 a = blobmsg_open_array(&b, "ipv6-address");
 660                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 661                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 662                 blobmsg_close_array(&b, a);
 663                 a = blobmsg_open_array(&b, "ipv6-prefix");
 664                 interface_ip_dump_prefix_list(&iface->config_ip);
 665                 interface_ip_dump_prefix_list(&iface->proto_ip);
 666                 blobmsg_close_array(&b, a);
 667                 a = blobmsg_open_array(&b, "ipv6-prefix-assignment");
 668                 interface_ip_dump_prefix_assignment_list(iface);
 669                 blobmsg_close_array(&b, a);
 670                 a = blobmsg_open_array(&b, "route");
 671                 interface_ip_dump_route_list(&iface->config_ip, true);
 672                 interface_ip_dump_route_list(&iface->proto_ip, true);
 673                 blobmsg_close_array(&b, a);
 674                 a = blobmsg_open_array(&b, "dns-server");
 675                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 676                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 677                 blobmsg_close_array(&b, a);
 678                 a = blobmsg_open_array(&b, "dns-search");
 679                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 680                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 681                 blobmsg_close_array(&b, a);
 682
 683                 inactive = blobmsg_open_table(&b, "inactive");
 684                 a = blobmsg_open_array(&b, "ipv4-address");
 685                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 686                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 687                 blobmsg_close_array(&b, a);
 688                 a = blobmsg_open_array(&b, "ipv6-address");
 689                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 690                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 691                 blobmsg_close_array(&b, a);
 692                 a = blobmsg_open_array(&b, "route");
 693                 interface_ip_dump_route_list(&iface->config_ip, false);
 694                 interface_ip_dump_route_list(&iface->proto_ip, false);
 695                 blobmsg_close_array(&b, a);
 696                 a = blobmsg_open_array(&b, "dns-server");
 697                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 698                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 699                 blobmsg_close_array(&b, a);
 700                 a = blobmsg_open_array(&b, "dns-search");
 701                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 702                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 703                 blobmsg_close_array(&b, a);
 704                 blobmsg_close_table(&b, inactive);
 705         }
 706
 707         a = blobmsg_open_table(&b, "data");
 708         avl_for_each_element(&iface->data, data, node)
 709                 blob_put(&b, blob_id(data->data), blob_data(data->data), blob_len(data->data));
 710
 711         blobmsg_close_table(&b, a);
 712
 713         if (!list_is_empty(&iface->errors))
 714                 netifd_add_interface_errors(&b, iface);
 715 }
 716
 717 static int
 718 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 719                      struct ubus_request_data *req, const char *method,
 720                      struct blob_attr *msg)
 721 {
 722         struct interface *iface = container_of(obj, struct interface, ubus);
 723
 724         blob_buf_init(&b, 0);
 725         netifd_dump_status(iface);
 726         ubus_send_reply(ctx, req, b.head);
 727
 728         return 0;
 729 }
 730
 731 static int
 732 netifd_handle_dump(struct ubus_context *ctx, struct ubus_object *obj,
 733                      struct ubus_request_data *req, const char *method,
 734                      struct blob_attr *msg)
 735 {
 736         blob_buf_init(&b, 0);
 737         void *a = blobmsg_open_array(&b, "interface");
 738
 739         struct interface *iface;
 740         vlist_for_each_element(&interfaces, iface, node) {
 741                 void *i = blobmsg_open_table(&b, NULL);
 742                 netifd_dump_status(iface);
 743                 blobmsg_close_table(&b, i);
 744         }
 745
 746         blobmsg_close_array(&b, a);
 747         ubus_send_reply(ctx, req, b.head);
 748
 749         return 0;
 750 }
 751
 752 static int
 753 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 754                            struct ubus_request_data *req, const char *method,
 755                            struct blob_attr *msg)
 756 {
 757         struct blob_attr *tb[__DEV_MAX];
 758         struct interface *iface;
 759         struct device *dev;
 760         bool add = !strncmp(method, "add", 3);
 761         int ret;
 762
 763         iface = container_of(obj, struct interface, ubus);
 764
 765         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 766
 767         if (!tb[DEV_NAME])
 768                 return UBUS_STATUS_INVALID_ARGUMENT;
 769
 770         device_lock();
 771
 772         dev = device_get(blobmsg_data(tb[DEV_NAME]), add ? 2 : 0);
 773         if (!dev) {
 774                 ret = UBUS_STATUS_NOT_FOUND;
 775                 goto out;
 776         }
 777
 778         if (add) {
 779                 device_set_present(dev, true);
 780                 if (iface->device_config)
 781                         device_set_config(dev, &simple_device_type, iface->config);
 782
 783                 system_if_apply_settings(dev, &dev->settings);
 784                 ret = interface_add_link(iface, dev);
 785         } else {
 786                 ret = interface_remove_link(iface, dev);
 787         }
 788
 789 out:
 790         device_unlock();
 791
 792         return ret;
 793 }
 794
 795
 796 static int
 797 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 798                           struct ubus_request_data *req, const char *method,
 799                           struct blob_attr *msg)
 800 {
 801         struct interface *iface;
 802
 803         iface = container_of(obj, struct interface, ubus);
 804
 805         if (!iface->proto || !iface->proto->notify)
 806                 return UBUS_STATUS_NOT_SUPPORTED;
 807
 808         return iface->proto->notify(iface->proto, msg);
 809 }
 810
 811 static void
 812 netifd_iface_do_remove(struct uloop_timeout *timeout)
 813 {
 814         struct interface *iface;
 815
 816         iface = container_of(timeout, struct interface, remove_timer);
 817         vlist_delete(&interfaces, &iface->node);
 818 }
 819
 820 static int
 821 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 822                     struct ubus_request_data *req, const char *method,
 823                     struct blob_attr *msg)
 824 {
 825         struct interface *iface;
 826
 827         iface = container_of(obj, struct interface, ubus);
 828         if (iface->remove_timer.cb)
 829                 return UBUS_STATUS_INVALID_ARGUMENT;
 830
 831         iface->remove_timer.cb = netifd_iface_do_remove;
 832         uloop_timeout_set(&iface->remove_timer, 100);
 833         return 0;
 834 }
 835
 836 static int
 837 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 838                             struct ubus_request_data *req, const char *method,
 839                             struct blob_attr *msg)
 840 {
 841         struct interface *iface;
 842         struct device *dev;
 843         const struct device_hotplug_ops *ops;
 844
 845         iface = container_of(obj, struct interface, ubus);
 846         dev = iface->main_dev.dev;
 847         if (!dev)
 848                 return 0;
 849
 850         ops = dev->hotplug_ops;
 851         if (!ops)
 852                 return 0;
 853
 854         return ops->prepare(dev);
 855 }
 856
 857 static int
 858 netifd_handle_set_data(struct ubus_context *ctx, struct ubus_object *obj,
 859                        struct ubus_request_data *req, const char *method,
 860                        struct blob_attr *msg)
 861 {
 862         struct interface *iface;
 863         struct blob_attr *cur;
 864         int rem, ret;
 865
 866         iface = container_of(obj, struct interface, ubus);
 867
 868         blob_for_each_attr(cur, msg, rem) {
 869                 ret = interface_add_data(iface, cur);
 870                 if (ret)
 871                         return ret;
 872         }
 873
 874         return 0;
 875 }
 876
 877 static struct ubus_method iface_object_methods[] = {
 878         { .name = "up", .handler = netifd_handle_up },
 879         { .name = "down", .handler = netifd_handle_down },
 880         { .name = "status", .handler = netifd_handle_status },
 881         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 882         { .name = "dump", .handler = netifd_handle_dump },
 883         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_policy ),
 884         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_policy ),
 885         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 886         { .name = "remove", .handler = netifd_iface_remove },
 887         { .name = "set_data", .handler = netifd_handle_set_data },
 888 };
 889
 890 static struct ubus_object_type iface_object_type =
 891         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 892
 893
 894 static struct ubus_object iface_object = {
 895         .name = "network.interface",
 896         .type = &iface_object_type,
 897         .n_methods = ARRAY_SIZE(iface_object_methods),
 898 };
 899
 900 static void netifd_add_object(struct ubus_object *obj)
 901 {
 902         int ret = ubus_add_object(ctx, obj);
 903
 904         if (ret != 0)
 905                 fprintf(stderr, "Failed to publish object '%s': %s\n", obj->name, ubus_strerror(ret));
 906 }
 907
 908 static const struct blobmsg_policy iface_policy = {
 909         .name = "interface",
 910         .type = BLOBMSG_TYPE_STRING,
 911 };
 912
 913 static int
 914 netifd_handle_iface(struct ubus_context *ctx, struct ubus_object *obj,
 915                     struct ubus_request_data *req, const char *method,
 916                     struct blob_attr *msg)
 917 {
 918         struct interface *iface;
 919         struct blob_attr *tb;
 920         int i;
 921
 922         blobmsg_parse(&iface_policy, 1, &tb, blob_data(msg), blob_len(msg));
 923         if (!tb)
 924                 return UBUS_STATUS_INVALID_ARGUMENT;
 925
 926         iface = vlist_find(&interfaces, blobmsg_data(tb), iface, node);
 927         if (!iface)
 928                 return UBUS_STATUS_NOT_FOUND;
 929
 930         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 931                 ubus_handler_t cb;
 932
 933                 if (strcmp(method, iface_object_methods[i].name) != 0)
 934                         continue;
 935
 936                 cb = iface_object_methods[i].handler;
 937                 return cb(ctx, &iface->ubus, req, method, msg);
 938         }
 939
 940         return UBUS_STATUS_INVALID_ARGUMENT;
 941 }
 942
 943 static void netifd_add_iface_object(void)
 944 {
 945         struct ubus_method *methods;
 946         int i;
 947
 948         methods = calloc(1, sizeof(iface_object_methods));
 949         memcpy(methods, iface_object_methods, sizeof(iface_object_methods));
 950         iface_object.methods = methods;
 951
 952         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 953                 if (methods[i].handler == netifd_handle_dump)
 954                         continue;
 955
 956                 methods[i].handler = netifd_handle_iface;
 957                 methods[i].policy = &iface_policy;
 958                 methods[i].n_policy = 1;
 959         }
 960         netifd_add_object(&iface_object);
 961 }
 962
 963 int
 964 netifd_ubus_init(const char *path)
 965 {
 966         uloop_init();
 967         ubus_path = path;
 968
 969         ctx = ubus_connect(path);
 970         if (!ctx)
 971                 return -EIO;
 972
 973         DPRINTF("connected as %08x\n", ctx->local_id);
 974         ctx->connection_lost = netifd_ubus_connection_lost;
 975         netifd_ubus_add_fd();
 976
 977         netifd_add_object(&main_object);
 978         netifd_add_object(&dev_object);
 979         netifd_add_iface_object();
 980
 981         return 0;
 982 }
 983
 984 void
 985 netifd_ubus_done(void)
 986 {
 987         ubus_free(ctx);
 988 }
 989
 990 void
 991 netifd_ubus_interface_event(struct interface *iface, bool up)
 992 {
 993         blob_buf_init(&b, 0);
 994         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
 995         blobmsg_add_string(&b, "interface", iface->name);
 996         ubus_send_event(ctx, "network.interface", b.head);
 997 }
 998
 999 void
1000 netifd_ubus_add_interface(struct interface *iface)
1001 {
1002         struct ubus_object *obj = &iface->ubus;
1003         char *name = NULL;
1004
1005         if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
1006                 return;
1007
1008         obj->name = name;
1009         obj->type = &iface_object_type;
1010         obj->methods = iface_object_methods;
1011         obj->n_methods = ARRAY_SIZE(iface_object_methods);
1012         if (ubus_add_object(ctx, &iface->ubus)) {
1013                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
1014                 free(name);
1015                 obj->name = NULL;
1016         }
1017 }
1018
1019 void
1020 netifd_ubus_remove_interface(struct interface *iface)
1021 {
1022         if (!iface->ubus.name)
1023                 return;
1024
1025         ubus_remove_object(ctx, &iface->ubus);
1026         free((void *) iface->ubus.name);
1027 }