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 #include "wireless.h"
  26
  27 struct ubus_context *ubus_ctx = NULL;
  28 static struct blob_buf b;
  29 static const char *ubus_path;
  30
  31 /* global object */
  32
  33 static int
  34 netifd_handle_restart(struct ubus_context *ctx, struct ubus_object *obj,
  35                       struct ubus_request_data *req, const char *method,
  36                       struct blob_attr *msg)
  37 {
  38         netifd_restart();
  39         return 0;
  40 }
  41
  42 static int
  43 netifd_handle_reload(struct ubus_context *ctx, struct ubus_object *obj,
  44                      struct ubus_request_data *req, const char *method,
  45                      struct blob_attr *msg)
  46 {
  47         if (netifd_reload())
  48                 return UBUS_STATUS_UNKNOWN_ERROR;
  49
  50         return UBUS_STATUS_OK;
  51 }
  52
  53 enum {
  54         HR_TARGET,
  55         HR_V6,
  56         HR_INTERFACE,
  57         __HR_MAX
  58 };
  59
  60 static const struct blobmsg_policy route_policy[__HR_MAX] = {
  61         [HR_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
  62         [HR_V6] = { .name = "v6", .type = BLOBMSG_TYPE_BOOL },
  63         [HR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
  64 };
  65
  66 static int
  67 netifd_add_host_route(struct ubus_context *ctx, struct ubus_object *obj,
  68                       struct ubus_request_data *req, const char *method,
  69                       struct blob_attr *msg)
  70 {
  71         struct blob_attr *tb[__HR_MAX];
  72         struct interface *iface = NULL;
  73         union if_addr a;
  74         bool v6 = false;
  75
  76         blobmsg_parse(route_policy, __HR_MAX, tb, blob_data(msg), blob_len(msg));
  77         if (!tb[HR_TARGET])
  78                 return UBUS_STATUS_INVALID_ARGUMENT;
  79
  80         if (tb[HR_V6])
  81                 v6 = blobmsg_get_bool(tb[HR_V6]);
  82
  83         if (tb[HR_INTERFACE])
  84                 iface = vlist_find(&interfaces, blobmsg_data(tb[HR_INTERFACE]), iface, node);
  85
  86         memset(&a, 0, sizeof(a));
  87         if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(tb[HR_TARGET]), &a))
  88                 return UBUS_STATUS_INVALID_ARGUMENT;
  89
  90
  91         iface = interface_ip_add_target_route(&a, v6, iface);
  92         if (!iface)
  93                 return UBUS_STATUS_NOT_FOUND;
  94
  95         blob_buf_init(&b, 0);
  96         blobmsg_add_string(&b, "interface", iface->name);
  97         ubus_send_reply(ctx, req, b.head);
  98
  99         return 0;
 100 }
 101
 102 static int
 103 netifd_get_proto_handlers(struct ubus_context *ctx, struct ubus_object *obj,
 104                           struct ubus_request_data *req, const char *method,
 105                           struct blob_attr *msg)
 106 {
 107         blob_buf_init(&b, 0);
 108         proto_dump_handlers(&b);
 109         ubus_send_reply(ctx, req, b.head);
 110
 111         return 0;
 112 }
 113
 114
 115 enum {
 116         DI_NAME,
 117         __DI_MAX
 118 };
 119
 120 static const struct blobmsg_policy dynamic_policy[__DI_MAX] = {
 121         [DI_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 122 };
 123
 124 static int
 125 netifd_add_dynamic(struct ubus_context *ctx, struct ubus_object *obj,
 126                       struct ubus_request_data *req, const char *method,
 127                       struct blob_attr *msg)
 128 {
 129         struct blob_attr *tb[__DI_MAX];
 130         struct interface *iface;
 131         struct blob_attr *config;
 132         struct device *dev;
 133
 134         blobmsg_parse(dynamic_policy, __DI_MAX, tb, blob_data(msg), blob_len(msg));
 135
 136         if (!tb[DI_NAME])
 137                 return UBUS_STATUS_INVALID_ARGUMENT;
 138
 139         const char *name = blobmsg_get_string(tb[DI_NAME]);
 140
 141         iface = interface_alloc(name, msg);
 142         if (!iface)
 143                 return UBUS_STATUS_UNKNOWN_ERROR;
 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         // the pointer will have changed
 153         iface = vlist_find(&interfaces, name, iface, node);
 154         if (!iface)
 155                 return UBUS_STATUS_UNKNOWN_ERROR;
 156
 157         // Set interface as dynamic
 158         interface_set_dynamic(iface);
 159
 160         dev = iface->main_dev.dev;
 161         if (!dev || !dev->default_config)
 162                 return UBUS_STATUS_UNKNOWN_ERROR;
 163
 164         return UBUS_STATUS_OK;
 165
 166 error:
 167         free(iface);
 168         return UBUS_STATUS_UNKNOWN_ERROR;
 169 }
 170
 171 static struct ubus_method main_object_methods[] = {
 172         { .name = "restart", .handler = netifd_handle_restart },
 173         { .name = "reload", .handler = netifd_handle_reload },
 174         UBUS_METHOD("add_host_route", netifd_add_host_route, route_policy),
 175         { .name = "get_proto_handlers", .handler = netifd_get_proto_handlers },
 176         UBUS_METHOD("add_dynamic", netifd_add_dynamic, dynamic_policy),
 177 };
 178
 179 static struct ubus_object_type main_object_type =
 180         UBUS_OBJECT_TYPE("netifd", main_object_methods);
 181
 182 static struct ubus_object main_object = {
 183         .name = "network",
 184         .type = &main_object_type,
 185         .methods = main_object_methods,
 186         .n_methods = ARRAY_SIZE(main_object_methods),
 187 };
 188
 189 enum {
 190         DEV_NAME,
 191         __DEV_MAX,
 192 };
 193
 194 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
 195         [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 196 };
 197
 198 static int
 199 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
 200                   struct ubus_request_data *req, const char *method,
 201                   struct blob_attr *msg)
 202 {
 203         struct device *dev = NULL;
 204         struct blob_attr *tb[__DEV_MAX];
 205
 206         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 207
 208         if (tb[DEV_NAME]) {
 209                 dev = device_find(blobmsg_data(tb[DEV_NAME]));
 210                 if (!dev)
 211                         return UBUS_STATUS_INVALID_ARGUMENT;
 212         }
 213
 214         blob_buf_init(&b, 0);
 215         device_dump_status(&b, dev);
 216         ubus_send_reply(ctx, req, b.head);
 217
 218         return 0;
 219 }
 220
 221 enum {
 222         ALIAS_ATTR_ALIAS,
 223         ALIAS_ATTR_DEV,
 224         __ALIAS_ATTR_MAX,
 225 };
 226
 227 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
 228         [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
 229         [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
 230 };
 231
 232 static int
 233 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
 234                     struct ubus_request_data *req, const char *method,
 235                     struct blob_attr *msg)
 236 {
 237         struct device *dev = NULL;
 238         struct blob_attr *tb[__ALIAS_ATTR_MAX];
 239         struct blob_attr *cur;
 240         int rem;
 241
 242         blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
 243
 244         if (!tb[ALIAS_ATTR_ALIAS])
 245                 return UBUS_STATUS_INVALID_ARGUMENT;
 246
 247         if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
 248                 dev = device_get(blobmsg_data(cur), true);
 249                 if (!dev)
 250                         return UBUS_STATUS_NOT_FOUND;
 251         }
 252
 253         blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
 254                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 255                         goto error;
 256
 257                 if (!blobmsg_check_attr(cur, NULL))
 258                         goto error;
 259
 260                 alias_notify_device(blobmsg_data(cur), dev);
 261         }
 262         return 0;
 263
 264 error:
 265         device_free_unused(dev);
 266         return UBUS_STATUS_INVALID_ARGUMENT;
 267 }
 268
 269 enum {
 270         DEV_STATE_NAME,
 271         DEV_STATE_DEFER,
 272         __DEV_STATE_MAX,
 273 };
 274
 275 static const struct blobmsg_policy dev_state_policy[__DEV_STATE_MAX] = {
 276         [DEV_STATE_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 277         [DEV_STATE_DEFER] = { .name = "defer", .type = BLOBMSG_TYPE_BOOL },
 278 };
 279
 280 static int
 281 netifd_handle_set_state(struct ubus_context *ctx, struct ubus_object *obj,
 282                         struct ubus_request_data *req, const char *method,
 283                         struct blob_attr *msg)
 284 {
 285         struct device *dev = NULL;
 286         struct blob_attr *tb[__DEV_STATE_MAX];
 287         struct blob_attr *cur;
 288
 289         blobmsg_parse(dev_state_policy, __DEV_STATE_MAX, tb, blob_data(msg), blob_len(msg));
 290
 291         cur = tb[DEV_STATE_NAME];
 292         if (!cur)
 293                 return UBUS_STATUS_INVALID_ARGUMENT;
 294
 295         dev = device_find(blobmsg_data(cur));
 296         if (!dev)
 297                 return UBUS_STATUS_NOT_FOUND;
 298
 299         cur = tb[DEV_STATE_DEFER];
 300         if (cur)
 301                 device_set_deferred(dev, !!blobmsg_get_u8(cur));
 302
 303         return 0;
 304 }
 305
 306 static struct ubus_method dev_object_methods[] = {
 307         UBUS_METHOD("status", netifd_dev_status, dev_policy),
 308         UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
 309         UBUS_METHOD("set_state", netifd_handle_set_state, dev_state_policy),
 310 };
 311
 312 static struct ubus_object_type dev_object_type =
 313         UBUS_OBJECT_TYPE("device", dev_object_methods);
 314
 315 static struct ubus_object dev_object = {
 316         .name = "network.device",
 317         .type = &dev_object_type,
 318         .methods = dev_object_methods,
 319         .n_methods = ARRAY_SIZE(dev_object_methods),
 320 };
 321
 322 static void
 323 netifd_ubus_add_fd(void)
 324 {
 325         ubus_add_uloop(ubus_ctx);
 326         system_fd_set_cloexec(ubus_ctx->sock.fd);
 327 }
 328
 329 static void
 330 netifd_ubus_reconnect_timer(struct uloop_timeout *timeout)
 331 {
 332         static struct uloop_timeout retry = {
 333                 .cb = netifd_ubus_reconnect_timer,
 334         };
 335         int t = 2;
 336
 337         if (ubus_reconnect(ubus_ctx, ubus_path) != 0) {
 338                 DPRINTF("failed to reconnect, trying again in %d seconds\n", t);
 339                 uloop_timeout_set(&retry, t * 1000);
 340                 return;
 341         }
 342
 343         DPRINTF("reconnected to ubus, new id: %08x\n", ubus_ctx->local_id);
 344         netifd_ubus_add_fd();
 345 }
 346
 347 static void
 348 netifd_ubus_connection_lost(struct ubus_context *ctx)
 349 {
 350         netifd_ubus_reconnect_timer(NULL);
 351 }
 352
 353 /* per-interface object */
 354
 355 static int
 356 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
 357                  struct ubus_request_data *req, const char *method,
 358                  struct blob_attr *msg)
 359 {
 360         struct interface *iface;
 361
 362         iface = container_of(obj, struct interface, ubus);
 363         interface_set_up(iface);
 364
 365         return 0;
 366 }
 367
 368 static int
 369 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
 370                    struct ubus_request_data *req, const char *method,
 371                    struct blob_attr *msg)
 372 {
 373         struct interface *iface;
 374
 375         iface = container_of(obj, struct interface, ubus);
 376         interface_set_down(iface);
 377
 378         return 0;
 379 }
 380
 381 static int
 382 netifd_handle_renew(struct ubus_context *ctx, struct ubus_object *obj,
 383                    struct ubus_request_data *req, const char *method,
 384                    struct blob_attr *msg)
 385 {
 386         struct interface *iface;
 387
 388         iface = container_of(obj, struct interface, ubus);
 389         interface_renew(iface);
 390
 391         return 0;
 392 }
 393
 394 static void
 395 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
 396 {
 397         struct interface_error *error;
 398         void *e, *e2, *e3;
 399         int i;
 400
 401         e = blobmsg_open_array(b, "errors");
 402         list_for_each_entry(error, &iface->errors, list) {
 403                 e2 = blobmsg_open_table(b, NULL);
 404
 405                 blobmsg_add_string(b, "subsystem", error->subsystem);
 406                 blobmsg_add_string(b, "code", error->code);
 407                 if (error->data[0]) {
 408                         e3 = blobmsg_open_array(b, "data");
 409                         for (i = 0; error->data[i]; i++)
 410                                 blobmsg_add_string(b, NULL, error->data[i]);
 411                         blobmsg_close_array(b, e3);
 412                 }
 413
 414                 blobmsg_close_table(b, e2);
 415         }
 416         blobmsg_close_array(b, e);
 417 }
 418
 419 static void
 420 interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6, bool enabled)
 421 {
 422         struct device_addr *addr;
 423         char *buf;
 424         void *a;
 425         int buflen = 128;
 426         int af;
 427
 428         time_t now = system_get_rtime();
 429         vlist_for_each_element(&ip->addr, addr, node) {
 430                 if (addr->enabled != enabled)
 431                         continue;
 432
 433                 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 434                         af = AF_INET;
 435                 else
 436                         af = AF_INET6;
 437
 438                 if (af != (v6 ? AF_INET6 : AF_INET))
 439                         continue;
 440
 441                 a = blobmsg_open_table(&b, NULL);
 442
 443                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 444                 inet_ntop(af, &addr->addr, buf, buflen);
 445                 blobmsg_add_string_buffer(&b);
 446
 447                 blobmsg_add_u32(&b, "mask", addr->mask);
 448
 449                 if (addr->preferred_until) {
 450                         int preferred = addr->preferred_until - now;
 451                         if (preferred < 0)
 452                                 preferred = 0;
 453                         blobmsg_add_u32(&b, "preferred", preferred);
 454                 }
 455
 456                 if (addr->valid_until)
 457                         blobmsg_add_u32(&b, "valid", addr->valid_until - now);
 458
 459                 if (addr->pclass)
 460                         blobmsg_add_string(&b, "class", addr->pclass);
 461
 462                 blobmsg_close_table(&b, a);
 463         }
 464 }
 465
 466 static void
 467 interface_ip_dump_route_list(struct interface_ip_settings *ip, bool enabled)
 468 {
 469         struct device_route *route;
 470         int buflen = 128;
 471         char *buf;
 472         void *r;
 473         int af;
 474
 475         time_t now = system_get_rtime();
 476         vlist_for_each_element(&ip->route, route, node) {
 477                 if (route->enabled != enabled)
 478                         continue;
 479
 480                 if ((ip->no_defaultroute == enabled) && !route->mask)
 481                         continue;
 482
 483                 if ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 484                         af = AF_INET;
 485                 else
 486                         af = AF_INET6;
 487
 488                 r = blobmsg_open_table(&b, NULL);
 489
 490                 buf = blobmsg_alloc_string_buffer(&b, "target", buflen);
 491                 inet_ntop(af, &route->addr, buf, buflen);
 492                 blobmsg_add_string_buffer(&b);
 493
 494                 blobmsg_add_u32(&b, "mask", route->mask);
 495
 496                 buf = blobmsg_alloc_string_buffer(&b, "nexthop", buflen);
 497                 inet_ntop(af, &route->nexthop, buf, buflen);
 498                 blobmsg_add_string_buffer(&b);
 499
 500                 if (route->flags & DEVROUTE_TYPE)
 501                         blobmsg_add_u32(&b, "type", route->type);
 502
 503                 if (route->flags & DEVROUTE_PROTO)
 504                         blobmsg_add_u32(&b, "proto", route->proto);
 505
 506                 if (route->flags & DEVROUTE_MTU)
 507                         blobmsg_add_u32(&b, "mtu", route->mtu);
 508
 509                 if (route->flags & DEVROUTE_METRIC)
 510                         blobmsg_add_u32(&b, "metric", route->metric);
 511
 512                 if (route->flags & DEVROUTE_TABLE)
 513                         blobmsg_add_u32(&b, "table", route->table);
 514
 515                 if (route->valid_until)
 516                         blobmsg_add_u32(&b, "valid", route->valid_until - now);
 517
 518                 buf = blobmsg_alloc_string_buffer(&b, "source", buflen);
 519                 inet_ntop(af, &route->source, buf, buflen);
 520                 snprintf(buf + strlen(buf), buflen - strlen(buf), "/%u", route->sourcemask);
 521                 blobmsg_add_string_buffer(&b);
 522
 523                 blobmsg_close_table(&b, r);
 524         }
 525 }
 526
 527
 528 static void
 529 interface_ip_dump_prefix_list(struct interface_ip_settings *ip)
 530 {
 531         struct device_prefix *prefix;
 532         char *buf;
 533         void *a, *c;
 534         const int buflen = INET6_ADDRSTRLEN;
 535
 536         time_t now = system_get_rtime();
 537         vlist_for_each_element(&ip->prefix, prefix, node) {
 538                 a = blobmsg_open_table(&b, NULL);
 539
 540                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 541                 inet_ntop(AF_INET6, &prefix->addr, buf, buflen);
 542                 blobmsg_add_string_buffer(&b);
 543
 544                 blobmsg_add_u32(&b, "mask", prefix->length);
 545
 546                 if (prefix->preferred_until) {
 547                         int preferred = prefix->preferred_until - now;
 548                         if (preferred < 0)
 549                                 preferred = 0;
 550                         blobmsg_add_u32(&b, "preferred", preferred);
 551                 }
 552
 553                 if (prefix->valid_until)
 554                         blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 555
 556                 blobmsg_add_string(&b, "class", prefix->pclass);
 557
 558                 c = blobmsg_open_table(&b, "assigned");
 559                 struct device_prefix_assignment *assign;
 560                 list_for_each_entry(assign, &prefix->assignments, head) {
 561                         if (!assign->name[0])
 562                                 continue;
 563
 564                         struct in6_addr addr = prefix->addr;
 565                         addr.s6_addr32[1] |= htonl(assign->assigned);
 566
 567                         void *d = blobmsg_open_table(&b, assign->name);
 568
 569                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 570                         inet_ntop(AF_INET6, &addr, buf, buflen);
 571                         blobmsg_add_string_buffer(&b);
 572
 573                         blobmsg_add_u32(&b, "mask", assign->length);
 574
 575                         blobmsg_close_table(&b, d);
 576                 }
 577                 blobmsg_close_table(&b, c);
 578
 579                 blobmsg_close_table(&b, a);
 580         }
 581 }
 582
 583
 584 static void
 585 interface_ip_dump_prefix_assignment_list(struct interface *iface)
 586 {
 587         void *a;
 588         char *buf;
 589         const int buflen = INET6_ADDRSTRLEN;
 590         time_t now = system_get_rtime();
 591
 592         struct device_prefix *prefix;
 593         list_for_each_entry(prefix, &prefixes, head) {
 594                 struct device_prefix_assignment *assign;
 595                 list_for_each_entry(assign, &prefix->assignments, head) {
 596                         if (strcmp(assign->name, iface->name))
 597                                 continue;
 598
 599                         struct in6_addr addr = prefix->addr;
 600                         addr.s6_addr32[1] |= htonl(assign->assigned);
 601
 602                         a = blobmsg_open_table(&b, NULL);
 603
 604                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 605                         inet_ntop(AF_INET6, &addr, buf, buflen);
 606                         blobmsg_add_string_buffer(&b);
 607
 608                         blobmsg_add_u32(&b, "mask", assign->length);
 609
 610                         if (prefix->preferred_until) {
 611                                 int preferred = prefix->preferred_until - now;
 612                                 if (preferred < 0)
 613                                         preferred = 0;
 614                                 blobmsg_add_u32(&b, "preferred", preferred);
 615                         }
 616
 617                         if (prefix->valid_until)
 618                                 blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 619
 620                         void *c = blobmsg_open_table(&b, "local-address");
 621                         if (assign->enabled) {
 622                                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 623                                 inet_ntop(AF_INET6, &assign->addr, buf, buflen);
 624                                 blobmsg_add_string_buffer(&b);
 625
 626                                 blobmsg_add_u32(&b, "mask", assign->length < 64 ? 64 : assign->length);
 627                         }
 628                         blobmsg_close_table(&b, c);
 629
 630                         blobmsg_close_table(&b, a);
 631                 }
 632         }
 633 }
 634
 635 static void
 636 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip, bool enabled)
 637 {
 638         struct dns_server *dns;
 639         int buflen = 128;
 640         char *buf;
 641
 642         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 643                 if (ip->no_dns == enabled)
 644                         continue;
 645
 646                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 647                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 648                 blobmsg_add_string_buffer(&b);
 649         }
 650 }
 651
 652 static void
 653 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip, bool enabled)
 654 {
 655         struct dns_search_domain *dns;
 656
 657         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 658                 if (ip->no_dns == enabled)
 659                         continue;
 660
 661                 blobmsg_add_string(&b, NULL, dns->name);
 662         }
 663 }
 664
 665 static void
 666 netifd_dump_status(struct interface *iface)
 667 {
 668         struct interface_data *data;
 669         struct device *dev;
 670         void *a, *inactive;
 671
 672         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 673         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 674         blobmsg_add_u8(&b, "available", iface->available);
 675         blobmsg_add_u8(&b, "autostart", iface->autostart);
 676         blobmsg_add_u8(&b, "dynamic", iface->dynamic);
 677
 678         if (iface->state == IFS_UP) {
 679                 time_t cur = system_get_rtime();
 680                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 681                 if (iface->l3_dev.dev)
 682                         blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 683         }
 684
 685         if (iface->proto_handler)
 686                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 687
 688         dev = iface->main_dev.dev;
 689         if (dev && !dev->hidden && iface->proto_handler &&
 690             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 691                 blobmsg_add_string(&b, "device", dev->ifname);
 692
 693         if (iface->state == IFS_UP) {
 694                 if (iface->updated) {
 695                         a = blobmsg_open_array(&b, "updated");
 696
 697                         if (iface->updated & IUF_ADDRESS)
 698                                 blobmsg_add_string(&b, NULL, "addresses");
 699                         if (iface->updated & IUF_ROUTE)
 700                                 blobmsg_add_string(&b, NULL, "routes");
 701                         if (iface->updated & IUF_PREFIX)
 702                                 blobmsg_add_string(&b, NULL, "prefixes");
 703                         if (iface->updated & IUF_DATA)
 704                                 blobmsg_add_string(&b, NULL, "data");
 705
 706                         blobmsg_close_array(&b, a);
 707                 }
 708
 709                 if (iface->ip4table)
 710                         blobmsg_add_u32(&b, "ip4table", iface->ip4table);
 711                 if (iface->ip6table)
 712                         blobmsg_add_u32(&b, "ip6table", iface->ip6table);
 713                 blobmsg_add_u32(&b, "metric", iface->metric);
 714                 blobmsg_add_u32(&b, "dns_metric", iface->dns_metric);
 715                 blobmsg_add_u8(&b, "delegation", !iface->proto_ip.no_delegation);
 716                 if (iface->assignment_weight)
 717                         blobmsg_add_u32(&b, "ip6weight", iface->assignment_weight);
 718                 a = blobmsg_open_array(&b, "ipv4-address");
 719                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 720                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 721                 blobmsg_close_array(&b, a);
 722                 a = blobmsg_open_array(&b, "ipv6-address");
 723                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 724                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 725                 blobmsg_close_array(&b, a);
 726                 a = blobmsg_open_array(&b, "ipv6-prefix");
 727                 interface_ip_dump_prefix_list(&iface->config_ip);
 728                 interface_ip_dump_prefix_list(&iface->proto_ip);
 729                 blobmsg_close_array(&b, a);
 730                 a = blobmsg_open_array(&b, "ipv6-prefix-assignment");
 731                 interface_ip_dump_prefix_assignment_list(iface);
 732                 blobmsg_close_array(&b, a);
 733                 a = blobmsg_open_array(&b, "route");
 734                 interface_ip_dump_route_list(&iface->config_ip, true);
 735                 interface_ip_dump_route_list(&iface->proto_ip, true);
 736                 blobmsg_close_array(&b, a);
 737                 a = blobmsg_open_array(&b, "dns-server");
 738                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 739                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 740                 blobmsg_close_array(&b, a);
 741                 a = blobmsg_open_array(&b, "dns-search");
 742                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 743                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 744                 blobmsg_close_array(&b, a);
 745
 746                 inactive = blobmsg_open_table(&b, "inactive");
 747                 a = blobmsg_open_array(&b, "ipv4-address");
 748                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 749                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 750                 blobmsg_close_array(&b, a);
 751                 a = blobmsg_open_array(&b, "ipv6-address");
 752                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 753                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 754                 blobmsg_close_array(&b, a);
 755                 a = blobmsg_open_array(&b, "route");
 756                 interface_ip_dump_route_list(&iface->config_ip, false);
 757                 interface_ip_dump_route_list(&iface->proto_ip, false);
 758                 blobmsg_close_array(&b, a);
 759                 a = blobmsg_open_array(&b, "dns-server");
 760                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 761                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 762                 blobmsg_close_array(&b, a);
 763                 a = blobmsg_open_array(&b, "dns-search");
 764                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 765                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 766                 blobmsg_close_array(&b, a);
 767                 blobmsg_close_table(&b, inactive);
 768         }
 769
 770         a = blobmsg_open_table(&b, "data");
 771         avl_for_each_element(&iface->data, data, node)
 772                 blobmsg_add_blob(&b, data->data);
 773
 774         blobmsg_close_table(&b, a);
 775
 776         if (!list_empty(&iface->errors))
 777                 netifd_add_interface_errors(&b, iface);
 778 }
 779
 780 static int
 781 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 782                      struct ubus_request_data *req, const char *method,
 783                      struct blob_attr *msg)
 784 {
 785         struct interface *iface = container_of(obj, struct interface, ubus);
 786
 787         blob_buf_init(&b, 0);
 788         netifd_dump_status(iface);
 789         ubus_send_reply(ctx, req, b.head);
 790
 791         return 0;
 792 }
 793
 794
 795 static int
 796 netifd_handle_dump(struct ubus_context *ctx, struct ubus_object *obj,
 797                      struct ubus_request_data *req, const char *method,
 798                      struct blob_attr *msg)
 799 {
 800         blob_buf_init(&b, 0);
 801         void *a = blobmsg_open_array(&b, "interface");
 802
 803         struct interface *iface;
 804         vlist_for_each_element(&interfaces, iface, node) {
 805                 void *i = blobmsg_open_table(&b, NULL);
 806                 blobmsg_add_string(&b, "interface", iface->name);
 807                 netifd_dump_status(iface);
 808                 blobmsg_close_table(&b, i);
 809         }
 810
 811         blobmsg_close_array(&b, a);
 812         ubus_send_reply(ctx, req, b.head);
 813
 814         return 0;
 815 }
 816
 817 enum {
 818         DEV_LINK_NAME,
 819         DEV_LINK_EXT,
 820         __DEV_LINK_MAX,
 821 };
 822
 823 static const struct blobmsg_policy dev_link_policy[__DEV_LINK_MAX] = {
 824         [DEV_LINK_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 825         [DEV_LINK_EXT] = { .name = "link-ext", .type = BLOBMSG_TYPE_BOOL },
 826 };
 827
 828 static int
 829 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 830                            struct ubus_request_data *req, const char *method,
 831                            struct blob_attr *msg)
 832 {
 833         struct blob_attr *tb[__DEV_LINK_MAX];
 834         struct blob_attr *cur;
 835         struct interface *iface;
 836         bool add = !strncmp(method, "add", 3);
 837         bool link_ext = true;
 838
 839         iface = container_of(obj, struct interface, ubus);
 840
 841         blobmsg_parse(dev_link_policy, __DEV_LINK_MAX, tb, blob_data(msg), blob_len(msg));
 842
 843         if (!tb[DEV_LINK_NAME])
 844                 return UBUS_STATUS_INVALID_ARGUMENT;
 845
 846         cur = tb[DEV_LINK_EXT];
 847         if (cur)
 848                 link_ext = blobmsg_get_bool(cur);
 849
 850         return interface_handle_link(iface, blobmsg_data(tb[DEV_LINK_NAME]), add, link_ext);
 851 }
 852
 853
 854 static int
 855 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 856                           struct ubus_request_data *req, const char *method,
 857                           struct blob_attr *msg)
 858 {
 859         struct interface *iface;
 860
 861         iface = container_of(obj, struct interface, ubus);
 862
 863         if (!iface->proto || !iface->proto->notify)
 864                 return UBUS_STATUS_NOT_SUPPORTED;
 865
 866         return iface->proto->notify(iface->proto, msg);
 867 }
 868
 869 static void
 870 netifd_iface_do_remove(struct uloop_timeout *timeout)
 871 {
 872         struct interface *iface;
 873
 874         iface = container_of(timeout, struct interface, remove_timer);
 875         vlist_delete(&interfaces, &iface->node);
 876 }
 877
 878 static int
 879 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 880                     struct ubus_request_data *req, const char *method,
 881                     struct blob_attr *msg)
 882 {
 883         struct interface *iface;
 884
 885         iface = container_of(obj, struct interface, ubus);
 886         if (iface->remove_timer.cb)
 887                 return UBUS_STATUS_INVALID_ARGUMENT;
 888
 889         iface->remove_timer.cb = netifd_iface_do_remove;
 890         uloop_timeout_set(&iface->remove_timer, 100);
 891         return 0;
 892 }
 893
 894 static int
 895 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 896                             struct ubus_request_data *req, const char *method,
 897                             struct blob_attr *msg)
 898 {
 899         struct interface *iface;
 900         struct device *dev;
 901         const struct device_hotplug_ops *ops;
 902
 903         iface = container_of(obj, struct interface, ubus);
 904         dev = iface->main_dev.dev;
 905         if (!dev)
 906                 return 0;
 907
 908         ops = dev->hotplug_ops;
 909         if (!ops)
 910                 return 0;
 911
 912         return ops->prepare(dev);
 913 }
 914
 915 static int
 916 netifd_handle_set_data(struct ubus_context *ctx, struct ubus_object *obj,
 917                        struct ubus_request_data *req, const char *method,
 918                        struct blob_attr *msg)
 919 {
 920         struct interface *iface;
 921
 922         iface = container_of(obj, struct interface, ubus);
 923
 924         return interface_parse_data(iface, msg);
 925 }
 926
 927 static struct ubus_method iface_object_methods[] = {
 928         { .name = "up", .handler = netifd_handle_up },
 929         { .name = "down", .handler = netifd_handle_down },
 930         { .name = "renew", .handler = netifd_handle_renew },
 931         { .name = "status", .handler = netifd_handle_status },
 932         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 933         { .name = "dump", .handler = netifd_handle_dump },
 934         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_link_policy ),
 935         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_link_policy ),
 936         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 937         { .name = "remove", .handler = netifd_iface_remove },
 938         { .name = "set_data", .handler = netifd_handle_set_data },
 939 };
 940
 941 static struct ubus_object_type iface_object_type =
 942         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 943
 944
 945 static struct ubus_object iface_object = {
 946         .name = "network.interface",
 947         .type = &iface_object_type,
 948         .n_methods = ARRAY_SIZE(iface_object_methods),
 949 };
 950
 951 static void netifd_add_object(struct ubus_object *obj)
 952 {
 953         int ret = ubus_add_object(ubus_ctx, obj);
 954
 955         if (ret != 0)
 956                 fprintf(stderr, "Failed to publish object '%s': %s\n", obj->name, ubus_strerror(ret));
 957 }
 958
 959 static const struct blobmsg_policy iface_policy = {
 960         .name = "interface",
 961         .type = BLOBMSG_TYPE_STRING,
 962 };
 963
 964 static int
 965 netifd_handle_iface(struct ubus_context *ctx, struct ubus_object *obj,
 966                     struct ubus_request_data *req, const char *method,
 967                     struct blob_attr *msg)
 968 {
 969         struct interface *iface;
 970         struct blob_attr *tb;
 971         int i;
 972
 973         blobmsg_parse(&iface_policy, 1, &tb, blob_data(msg), blob_len(msg));
 974         if (!tb)
 975                 return UBUS_STATUS_INVALID_ARGUMENT;
 976
 977         iface = vlist_find(&interfaces, blobmsg_data(tb), iface, node);
 978         if (!iface)
 979                 return UBUS_STATUS_NOT_FOUND;
 980
 981         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 982                 ubus_handler_t cb;
 983
 984                 if (strcmp(method, iface_object_methods[i].name) != 0)
 985                         continue;
 986
 987                 cb = iface_object_methods[i].handler;
 988                 return cb(ctx, &iface->ubus, req, method, msg);
 989         }
 990
 991         return UBUS_STATUS_INVALID_ARGUMENT;
 992 }
 993
 994 static void netifd_add_iface_object(void)
 995 {
 996         struct ubus_method *methods;
 997         int i;
 998
 999         methods = calloc(1, sizeof(iface_object_methods));
1000         if (!methods)
1001                 return;
1002
1003         memcpy(methods, iface_object_methods, sizeof(iface_object_methods));
1004         iface_object.methods = methods;
1005
1006         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
1007                 if (methods[i].handler == netifd_handle_dump)
1008                         continue;
1009
1010                 methods[i].handler = netifd_handle_iface;
1011                 methods[i].policy = &iface_policy;
1012                 methods[i].n_policy = 1;
1013         }
1014         netifd_add_object(&iface_object);
1015 }
1016
1017 static struct wireless_device *
1018 get_wdev(struct blob_attr *msg, int *ret)
1019 {
1020         struct blobmsg_policy wdev_policy = {
1021                 .name = "device",
1022                 .type = BLOBMSG_TYPE_STRING,
1023         };
1024         struct blob_attr *dev_attr;
1025         struct wireless_device *wdev = NULL;
1026
1027
1028         blobmsg_parse(&wdev_policy, 1, &dev_attr, blob_data(msg), blob_len(msg));
1029         if (!dev_attr) {
1030                 *ret = UBUS_STATUS_INVALID_ARGUMENT;
1031                 return NULL;
1032         }
1033
1034         wdev = vlist_find(&wireless_devices, blobmsg_data(dev_attr), wdev, node);
1035         if (!wdev) {
1036                 *ret = UBUS_STATUS_NOT_FOUND;
1037                 return NULL;
1038         }
1039
1040         *ret = 0;
1041         return wdev;
1042 }
1043
1044 static int
1045 netifd_handle_wdev_up(struct ubus_context *ctx, struct ubus_object *obj,
1046                       struct ubus_request_data *req, const char *method,
1047                       struct blob_attr *msg)
1048 {
1049         struct wireless_device *wdev;
1050         int ret;
1051
1052         wdev = get_wdev(msg, &ret);
1053         if (ret == UBUS_STATUS_NOT_FOUND)
1054                 return ret;
1055
1056         if (wdev) {
1057                 wireless_device_set_up(wdev);
1058         } else {
1059                 vlist_for_each_element(&wireless_devices, wdev, node)
1060                         wireless_device_set_up(wdev);
1061         }
1062
1063         return 0;
1064 }
1065
1066 static int
1067 netifd_handle_wdev_down(struct ubus_context *ctx, struct ubus_object *obj,
1068                         struct ubus_request_data *req, const char *method,
1069                         struct blob_attr *msg)
1070 {
1071         struct wireless_device *wdev;
1072         int ret;
1073
1074         wdev = get_wdev(msg, &ret);
1075         if (ret == UBUS_STATUS_NOT_FOUND)
1076                 return ret;
1077
1078         if (wdev) {
1079                 wireless_device_set_down(wdev);
1080         } else {
1081                 vlist_for_each_element(&wireless_devices, wdev, node)
1082                         wireless_device_set_down(wdev);
1083         }
1084
1085         return 0;
1086 }
1087
1088 static int
1089 netifd_handle_wdev_status(struct ubus_context *ctx, struct ubus_object *obj,
1090                           struct ubus_request_data *req, const char *method,
1091                           struct blob_attr *msg)
1092 {
1093         struct wireless_device *wdev;
1094         int ret;
1095
1096         wdev = get_wdev(msg, &ret);
1097         if (ret == UBUS_STATUS_NOT_FOUND)
1098                 return ret;
1099
1100         blob_buf_init(&b, 0);
1101         if (wdev) {
1102                 wireless_device_status(wdev, &b);
1103         } else {
1104                 vlist_for_each_element(&wireless_devices, wdev, node)
1105                         wireless_device_status(wdev, &b);
1106         }
1107         ubus_send_reply(ctx, req, b.head);
1108         return 0;
1109 }
1110
1111 static int
1112 netifd_handle_wdev_get_validate(struct ubus_context *ctx, struct ubus_object *obj,
1113                           struct ubus_request_data *req, const char *method,
1114                           struct blob_attr *msg)
1115 {
1116         struct wireless_device *wdev;
1117         int ret;
1118
1119         wdev = get_wdev(msg, &ret);
1120         if (ret == UBUS_STATUS_NOT_FOUND)
1121                 return ret;
1122
1123         blob_buf_init(&b, 0);
1124         if (wdev) {
1125                 wireless_device_get_validate(wdev, &b);
1126         } else {
1127                 vlist_for_each_element(&wireless_devices, wdev, node)
1128                         wireless_device_get_validate(wdev, &b);
1129         }
1130         ubus_send_reply(ctx, req, b.head);
1131         return 0;
1132 }
1133
1134 static int
1135 netifd_handle_wdev_notify(struct ubus_context *ctx, struct ubus_object *obj,
1136                           struct ubus_request_data *req, const char *method,
1137                           struct blob_attr *msg)
1138 {
1139         struct wireless_device *wdev;
1140         int ret;
1141
1142         wdev = get_wdev(msg, &ret);
1143         if (!wdev)
1144                 return ret;
1145
1146         return wireless_device_notify(wdev, msg, req);
1147 }
1148
1149 static struct ubus_method wireless_object_methods[] = {
1150         { .name = "up", .handler = netifd_handle_wdev_up },
1151         { .name = "down", .handler = netifd_handle_wdev_down },
1152         { .name = "status", .handler = netifd_handle_wdev_status },
1153         { .name = "notify", .handler = netifd_handle_wdev_notify },
1154         { .name = "get_validate", .handler = netifd_handle_wdev_get_validate },
1155 };
1156
1157 static struct ubus_object_type wireless_object_type =
1158         UBUS_OBJECT_TYPE("netifd_iface", wireless_object_methods);
1159
1160
1161 static struct ubus_object wireless_object = {
1162         .name = "network.wireless",
1163         .type = &wireless_object_type,
1164         .methods = wireless_object_methods,
1165         .n_methods = ARRAY_SIZE(wireless_object_methods),
1166 };
1167
1168 int
1169 netifd_ubus_init(const char *path)
1170 {
1171         uloop_init();
1172         ubus_path = path;
1173
1174         ubus_ctx = ubus_connect(path);
1175         if (!ubus_ctx)
1176                 return -EIO;
1177
1178         DPRINTF("connected as %08x\n", ubus_ctx->local_id);
1179         ubus_ctx->connection_lost = netifd_ubus_connection_lost;
1180         netifd_ubus_add_fd();
1181
1182         netifd_add_object(&main_object);
1183         netifd_add_object(&dev_object);
1184         netifd_add_object(&wireless_object);
1185         netifd_add_iface_object();
1186
1187         return 0;
1188 }
1189
1190 void
1191 netifd_ubus_done(void)
1192 {
1193         ubus_free(ubus_ctx);
1194 }
1195
1196 void
1197 netifd_ubus_interface_event(struct interface *iface, bool up)
1198 {
1199         blob_buf_init(&b, 0);
1200         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
1201         blobmsg_add_string(&b, "interface", iface->name);
1202         ubus_send_event(ubus_ctx, "network.interface", b.head);
1203 }
1204
1205 void
1206 netifd_ubus_interface_notify(struct interface *iface, bool up)
1207 {
1208         const char *event = (up) ? "interface.update" : "interface.down";
1209         blob_buf_init(&b, 0);
1210         blobmsg_add_string(&b, "interface", iface->name);
1211         netifd_dump_status(iface);
1212         ubus_notify(ubus_ctx, &iface_object, event, b.head, -1);
1213         ubus_notify(ubus_ctx, &iface->ubus, event, b.head, -1);
1214 }
1215
1216 void
1217 netifd_ubus_add_interface(struct interface *iface)
1218 {
1219         struct ubus_object *obj = &iface->ubus;
1220         char *name = NULL;
1221
1222         if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
1223                 return;
1224
1225         obj->name = name;
1226         obj->type = &iface_object_type;
1227         obj->methods = iface_object_methods;
1228         obj->n_methods = ARRAY_SIZE(iface_object_methods);
1229         if (ubus_add_object(ubus_ctx, &iface->ubus)) {
1230                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
1231                 free(name);
1232                 obj->name = NULL;
1233         }
1234 }
1235
1236 void
1237 netifd_ubus_remove_interface(struct interface *iface)
1238 {
1239         if (!iface->ubus.name)
1240                 return;
1241
1242         ubus_remove_object(ubus_ctx, &iface->ubus);
1243         free((void *) iface->ubus.name);
1244 }