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         netifd_reload();
  48         return 0;
  49 }
  50
  51 enum {
  52         HR_TARGET,
  53         HR_V6,
  54         HR_INTERFACE,
  55         __HR_MAX
  56 };
  57
  58 static const struct blobmsg_policy route_policy[__HR_MAX] = {
  59         [HR_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
  60         [HR_V6] = { .name = "v6", .type = BLOBMSG_TYPE_BOOL },
  61         [HR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
  62 };
  63
  64 static int
  65 netifd_add_host_route(struct ubus_context *ctx, struct ubus_object *obj,
  66                       struct ubus_request_data *req, const char *method,
  67                       struct blob_attr *msg)
  68 {
  69         struct blob_attr *tb[__HR_MAX];
  70         struct interface *iface = NULL;
  71         union if_addr a;
  72         bool v6 = false;
  73
  74         blobmsg_parse(route_policy, __HR_MAX, tb, blob_data(msg), blob_len(msg));
  75         if (!tb[HR_TARGET])
  76                 return UBUS_STATUS_INVALID_ARGUMENT;
  77
  78         if (tb[HR_V6])
  79                 v6 = blobmsg_get_bool(tb[HR_V6]);
  80
  81         if (tb[HR_INTERFACE])
  82                 iface = vlist_find(&interfaces, blobmsg_data(tb[HR_INTERFACE]), iface, node);
  83
  84         memset(&a, 0, sizeof(a));
  85         if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(tb[HR_TARGET]), &a))
  86                 return UBUS_STATUS_INVALID_ARGUMENT;
  87
  88
  89         iface = interface_ip_add_target_route(&a, v6, iface);
  90         if (!iface)
  91                 return UBUS_STATUS_NOT_FOUND;
  92
  93         blob_buf_init(&b, 0);
  94         blobmsg_add_string(&b, "interface", iface->name);
  95         ubus_send_reply(ctx, req, b.head);
  96
  97         return 0;
  98 }
  99
 100 static int
 101 netifd_get_proto_handlers(struct ubus_context *ctx, struct ubus_object *obj,
 102                           struct ubus_request_data *req, const char *method,
 103                           struct blob_attr *msg)
 104 {
 105         blob_buf_init(&b, 0);
 106         proto_dump_handlers(&b);
 107         ubus_send_reply(ctx, req, b.head);
 108
 109         return 0;
 110 }
 111
 112
 113 enum {
 114         DI_NAME,
 115         __DI_MAX
 116 };
 117
 118 static const struct blobmsg_policy dynamic_policy[__DI_MAX] = {
 119         [DI_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 120 };
 121
 122 static int
 123 netifd_add_dynamic(struct ubus_context *ctx, struct ubus_object *obj,
 124                       struct ubus_request_data *req, const char *method,
 125                       struct blob_attr *msg)
 126 {
 127         struct blob_attr *tb[__DI_MAX];
 128         struct interface *iface;
 129         struct blob_attr *config;
 130         struct device *dev;
 131
 132         blobmsg_parse(dynamic_policy, __DI_MAX, tb, blob_data(msg), blob_len(msg));
 133
 134         if (!tb[DI_NAME])
 135                 return UBUS_STATUS_INVALID_ARGUMENT;
 136
 137         const char *name = blobmsg_get_string(tb[DI_NAME]);
 138
 139         iface = interface_alloc(name, msg);
 140         if (!iface)
 141                 return UBUS_STATUS_UNKNOWN_ERROR;
 142
 143         config = blob_memdup(msg);
 144         if (!config)
 145                 goto error;
 146
 147         interface_add(iface, config);
 148
 149         // need to look up the interface name again, in case of config update
 150         // the pointer will have changed
 151         iface = vlist_find(&interfaces, name, iface, node);
 152         if (!iface)
 153                 return UBUS_STATUS_UNKNOWN_ERROR;
 154
 155         // Set interface as dynamic
 156         interface_set_dynamic(iface);
 157
 158         dev = iface->main_dev.dev;
 159         if (!dev || !dev->default_config)
 160                 return UBUS_STATUS_UNKNOWN_ERROR;
 161
 162         return UBUS_STATUS_OK;
 163
 164 error:
 165         free(iface);
 166         return UBUS_STATUS_UNKNOWN_ERROR;
 167 }
 168
 169 static int
 170 netifd_del_dynamic(struct ubus_context *ctx, struct ubus_object *obj,
 171                       struct ubus_request_data *req, const char *method,
 172                       struct blob_attr *msg)
 173 {
 174         struct blob_attr *tb[__DI_MAX];
 175         struct interface *iface;
 176
 177         blobmsg_parse(dynamic_policy, __DI_MAX, tb, blob_data(msg), blob_len(msg));
 178
 179         if (!tb[DI_NAME])
 180                 return UBUS_STATUS_INVALID_ARGUMENT;
 181
 182         const char *name = blobmsg_get_string(tb[DI_NAME]);
 183         iface = vlist_find(&interfaces, name, iface, node);
 184
 185         if (!iface)
 186                 return UBUS_STATUS_NOT_FOUND;
 187         else if (!iface->dynamic)
 188                 return UBUS_STATUS_INVALID_COMMAND;
 189
 190         vlist_delete(&interfaces, &iface->node);
 191         return UBUS_STATUS_OK;
 192 }
 193
 194 static struct ubus_method main_object_methods[] = {
 195         { .name = "restart", .handler = netifd_handle_restart },
 196         { .name = "reload", .handler = netifd_handle_reload },
 197         UBUS_METHOD("add_host_route", netifd_add_host_route, route_policy),
 198         { .name = "get_proto_handlers", .handler = netifd_get_proto_handlers },
 199         UBUS_METHOD("add_dynamic", netifd_add_dynamic, dynamic_policy),
 200         UBUS_METHOD("del_dynamic", netifd_del_dynamic, dynamic_policy),
 201 };
 202
 203 static struct ubus_object_type main_object_type =
 204         UBUS_OBJECT_TYPE("netifd", main_object_methods);
 205
 206 static struct ubus_object main_object = {
 207         .name = "network",
 208         .type = &main_object_type,
 209         .methods = main_object_methods,
 210         .n_methods = ARRAY_SIZE(main_object_methods),
 211 };
 212
 213 enum {
 214         DEV_NAME,
 215         __DEV_MAX,
 216 };
 217
 218 static const struct blobmsg_policy dev_policy[__DEV_MAX] = {
 219         [DEV_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 220 };
 221
 222 static int
 223 netifd_dev_status(struct ubus_context *ctx, struct ubus_object *obj,
 224                   struct ubus_request_data *req, const char *method,
 225                   struct blob_attr *msg)
 226 {
 227         struct device *dev = NULL;
 228         struct blob_attr *tb[__DEV_MAX];
 229
 230         blobmsg_parse(dev_policy, __DEV_MAX, tb, blob_data(msg), blob_len(msg));
 231
 232         if (tb[DEV_NAME]) {
 233                 dev = device_get(blobmsg_data(tb[DEV_NAME]), false);
 234                 if (!dev)
 235                         return UBUS_STATUS_INVALID_ARGUMENT;
 236         }
 237
 238         blob_buf_init(&b, 0);
 239         device_dump_status(&b, dev);
 240         ubus_send_reply(ctx, req, b.head);
 241
 242         return 0;
 243 }
 244
 245 enum {
 246         ALIAS_ATTR_ALIAS,
 247         ALIAS_ATTR_DEV,
 248         __ALIAS_ATTR_MAX,
 249 };
 250
 251 static const struct blobmsg_policy alias_attrs[__ALIAS_ATTR_MAX] = {
 252         [ALIAS_ATTR_ALIAS] = { "alias", BLOBMSG_TYPE_ARRAY },
 253         [ALIAS_ATTR_DEV] = { "device", BLOBMSG_TYPE_STRING },
 254 };
 255
 256 static int
 257 netifd_handle_alias(struct ubus_context *ctx, struct ubus_object *obj,
 258                     struct ubus_request_data *req, const char *method,
 259                     struct blob_attr *msg)
 260 {
 261         struct device *dev = NULL;
 262         struct blob_attr *tb[__ALIAS_ATTR_MAX];
 263         struct blob_attr *cur;
 264         int rem;
 265
 266         blobmsg_parse(alias_attrs, __ALIAS_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
 267
 268         if (!tb[ALIAS_ATTR_ALIAS])
 269                 return UBUS_STATUS_INVALID_ARGUMENT;
 270
 271         if ((cur = tb[ALIAS_ATTR_DEV]) != NULL) {
 272                 dev = device_get(blobmsg_data(cur), true);
 273                 if (!dev)
 274                         return UBUS_STATUS_NOT_FOUND;
 275         }
 276
 277         blobmsg_for_each_attr(cur, tb[ALIAS_ATTR_ALIAS], rem) {
 278                 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
 279                         goto error;
 280
 281                 if (!blobmsg_check_attr(cur, NULL))
 282                         goto error;
 283
 284                 alias_notify_device(blobmsg_data(cur), dev);
 285         }
 286         return 0;
 287
 288 error:
 289         device_free_unused(dev);
 290         return UBUS_STATUS_INVALID_ARGUMENT;
 291 }
 292
 293 enum {
 294         DEV_STATE_NAME,
 295         DEV_STATE_DEFER,
 296         __DEV_STATE_MAX,
 297 };
 298
 299 static const struct blobmsg_policy dev_state_policy[__DEV_STATE_MAX] = {
 300         [DEV_STATE_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 301         [DEV_STATE_DEFER] = { .name = "defer", .type = BLOBMSG_TYPE_BOOL },
 302 };
 303
 304 static int
 305 netifd_handle_set_state(struct ubus_context *ctx, struct ubus_object *obj,
 306                         struct ubus_request_data *req, const char *method,
 307                         struct blob_attr *msg)
 308 {
 309         struct device *dev = NULL;
 310         struct blob_attr *tb[__DEV_STATE_MAX];
 311         struct blob_attr *cur;
 312
 313         blobmsg_parse(dev_state_policy, __DEV_STATE_MAX, tb, blob_data(msg), blob_len(msg));
 314
 315         cur = tb[DEV_STATE_NAME];
 316         if (!cur)
 317                 return UBUS_STATUS_INVALID_ARGUMENT;
 318
 319         dev = device_get(blobmsg_data(cur), false);
 320         if (!dev)
 321                 return UBUS_STATUS_NOT_FOUND;
 322
 323         cur = tb[DEV_STATE_DEFER];
 324         if (cur)
 325                 device_set_deferred(dev, !!blobmsg_get_u8(cur));
 326
 327         return 0;
 328 }
 329
 330 static struct ubus_method dev_object_methods[] = {
 331         UBUS_METHOD("status", netifd_dev_status, dev_policy),
 332         UBUS_METHOD("set_alias", netifd_handle_alias, alias_attrs),
 333         UBUS_METHOD("set_state", netifd_handle_set_state, dev_state_policy),
 334 };
 335
 336 static struct ubus_object_type dev_object_type =
 337         UBUS_OBJECT_TYPE("device", dev_object_methods);
 338
 339 static struct ubus_object dev_object = {
 340         .name = "network.device",
 341         .type = &dev_object_type,
 342         .methods = dev_object_methods,
 343         .n_methods = ARRAY_SIZE(dev_object_methods),
 344 };
 345
 346 static void
 347 netifd_ubus_add_fd(void)
 348 {
 349         ubus_add_uloop(ubus_ctx);
 350         system_fd_set_cloexec(ubus_ctx->sock.fd);
 351 }
 352
 353 static void
 354 netifd_ubus_reconnect_timer(struct uloop_timeout *timeout)
 355 {
 356         static struct uloop_timeout retry = {
 357                 .cb = netifd_ubus_reconnect_timer,
 358         };
 359         int t = 2;
 360
 361         if (ubus_reconnect(ubus_ctx, ubus_path) != 0) {
 362                 DPRINTF("failed to reconnect, trying again in %d seconds\n", t);
 363                 uloop_timeout_set(&retry, t * 1000);
 364                 return;
 365         }
 366
 367         DPRINTF("reconnected to ubus, new id: %08x\n", ubus_ctx->local_id);
 368         netifd_ubus_add_fd();
 369 }
 370
 371 static void
 372 netifd_ubus_connection_lost(struct ubus_context *ctx)
 373 {
 374         netifd_ubus_reconnect_timer(NULL);
 375 }
 376
 377 /* per-interface object */
 378
 379 static int
 380 netifd_handle_up(struct ubus_context *ctx, struct ubus_object *obj,
 381                  struct ubus_request_data *req, const char *method,
 382                  struct blob_attr *msg)
 383 {
 384         struct interface *iface;
 385
 386         iface = container_of(obj, struct interface, ubus);
 387         interface_set_up(iface);
 388
 389         return 0;
 390 }
 391
 392 static int
 393 netifd_handle_down(struct ubus_context *ctx, struct ubus_object *obj,
 394                    struct ubus_request_data *req, const char *method,
 395                    struct blob_attr *msg)
 396 {
 397         struct interface *iface;
 398
 399         iface = container_of(obj, struct interface, ubus);
 400         interface_set_down(iface);
 401
 402         return 0;
 403 }
 404
 405 static void
 406 netifd_add_interface_errors(struct blob_buf *b, struct interface *iface)
 407 {
 408         struct interface_error *error;
 409         void *e, *e2, *e3;
 410         int i;
 411
 412         e = blobmsg_open_array(b, "errors");
 413         list_for_each_entry(error, &iface->errors, list) {
 414                 e2 = blobmsg_open_table(b, NULL);
 415
 416                 blobmsg_add_string(b, "subsystem", error->subsystem);
 417                 blobmsg_add_string(b, "code", error->code);
 418                 if (error->data[0]) {
 419                         e3 = blobmsg_open_array(b, "data");
 420                         for (i = 0; error->data[i]; i++)
 421                                 blobmsg_add_string(b, NULL, error->data[i]);
 422                         blobmsg_close_array(b, e3);
 423                 }
 424
 425                 blobmsg_close_table(b, e2);
 426         }
 427         blobmsg_close_array(b, e);
 428 }
 429
 430 static void
 431 interface_ip_dump_address_list(struct interface_ip_settings *ip, bool v6,
 432                                bool enabled)
 433 {
 434         struct device_addr *addr;
 435         char *buf;
 436         void *a;
 437         int buflen = 128;
 438         int af;
 439
 440         time_t now = system_get_rtime();
 441         vlist_for_each_element(&ip->addr, addr, node) {
 442                 if (addr->enabled != enabled)
 443                         continue;
 444
 445                 if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 446                         af = AF_INET;
 447                 else
 448                         af = AF_INET6;
 449
 450                 if (af != (v6 ? AF_INET6 : AF_INET))
 451                         continue;
 452
 453                 a = blobmsg_open_table(&b, NULL);
 454
 455                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 456                 inet_ntop(af, &addr->addr, buf, buflen);
 457                 blobmsg_add_string_buffer(&b);
 458
 459                 blobmsg_add_u32(&b, "mask", addr->mask);
 460
 461                 if (addr->preferred_until) {
 462                         int preferred = addr->preferred_until - now;
 463                         if (preferred < 0)
 464                                 preferred = 0;
 465                         blobmsg_add_u32(&b, "preferred", preferred);
 466                 }
 467
 468                 if (addr->valid_until)
 469                         blobmsg_add_u32(&b, "valid", addr->valid_until - now);
 470
 471                 if (addr->pclass)
 472                         blobmsg_add_string(&b, "class", addr->pclass);
 473
 474                 blobmsg_close_table(&b, a);
 475         }
 476 }
 477
 478 static void
 479 interface_ip_dump_route_list(struct interface_ip_settings *ip, bool enabled)
 480 {
 481         struct device_route *route;
 482         int buflen = 128;
 483         char *buf;
 484         void *r;
 485         int af;
 486
 487         time_t now = system_get_rtime();
 488         vlist_for_each_element(&ip->route, route, node) {
 489                 if (route->enabled != enabled)
 490                         continue;
 491
 492                 if ((ip->no_defaultroute == enabled) && !route->mask)
 493                         continue;
 494
 495                 if ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET4)
 496                         af = AF_INET;
 497                 else
 498                         af = AF_INET6;
 499
 500                 r = blobmsg_open_table(&b, NULL);
 501
 502                 buf = blobmsg_alloc_string_buffer(&b, "target", buflen);
 503                 inet_ntop(af, &route->addr, buf, buflen);
 504                 blobmsg_add_string_buffer(&b);
 505
 506                 blobmsg_add_u32(&b, "mask", route->mask);
 507
 508                 buf = blobmsg_alloc_string_buffer(&b, "nexthop", buflen);
 509                 inet_ntop(af, &route->nexthop, buf, buflen);
 510                 blobmsg_add_string_buffer(&b);
 511
 512                 if (route->flags & DEVROUTE_TYPE)
 513                         blobmsg_add_u32(&b, "type", route->type);
 514
 515                 if (route->flags & DEVROUTE_MTU)
 516                         blobmsg_add_u32(&b, "mtu", route->mtu);
 517
 518                 if (route->flags & DEVROUTE_METRIC)
 519                         blobmsg_add_u32(&b, "metric", route->metric);
 520
 521                 if (route->flags & DEVROUTE_TABLE)
 522                         blobmsg_add_u32(&b, "table", route->table);
 523
 524                 if (route->valid_until)
 525                         blobmsg_add_u32(&b, "valid", route->valid_until - now);
 526
 527                 buf = blobmsg_alloc_string_buffer(&b, "source", buflen);
 528                 inet_ntop(af, &route->source, buf, buflen);
 529                 snprintf(buf + strlen(buf), buflen - strlen(buf), "/%u", route->sourcemask);
 530                 blobmsg_add_string_buffer(&b);
 531
 532                 blobmsg_close_table(&b, r);
 533         }
 534 }
 535
 536
 537 static void
 538 interface_ip_dump_prefix_list(struct interface_ip_settings *ip)
 539 {
 540         struct device_prefix *prefix;
 541         char *buf;
 542         void *a, *c;
 543         const int buflen = INET6_ADDRSTRLEN;
 544
 545         time_t now = system_get_rtime();
 546         vlist_for_each_element(&ip->prefix, prefix, node) {
 547                 a = blobmsg_open_table(&b, NULL);
 548
 549                 buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 550                 inet_ntop(AF_INET6, &prefix->addr, buf, buflen);
 551                 blobmsg_add_string_buffer(&b);
 552
 553                 blobmsg_add_u32(&b, "mask", prefix->length);
 554
 555                 if (prefix->preferred_until) {
 556                         int preferred = prefix->preferred_until - now;
 557                         if (preferred < 0)
 558                                 preferred = 0;
 559                         blobmsg_add_u32(&b, "preferred", preferred);
 560                 }
 561
 562                 if (prefix->valid_until)
 563                         blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 564
 565                 blobmsg_add_string(&b, "class", prefix->pclass);
 566
 567                 c = blobmsg_open_table(&b, "assigned");
 568                 struct device_prefix_assignment *assign;
 569                 list_for_each_entry(assign, &prefix->assignments, head) {
 570                         if (!assign->name[0])
 571                                 continue;
 572
 573                         struct in6_addr addr = prefix->addr;
 574                         addr.s6_addr32[1] |= htonl(assign->assigned);
 575
 576                         void *d = blobmsg_open_table(&b, assign->name);
 577
 578                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 579                         inet_ntop(AF_INET6, &addr, buf, buflen);
 580                         blobmsg_add_string_buffer(&b);
 581
 582                         blobmsg_add_u32(&b, "mask", assign->length);
 583
 584                         blobmsg_close_table(&b, d);
 585                 }
 586                 blobmsg_close_table(&b, c);
 587
 588                 blobmsg_close_table(&b, a);
 589         }
 590 }
 591
 592
 593 static void
 594 interface_ip_dump_prefix_assignment_list(struct interface *iface)
 595 {
 596         void *a;
 597         char *buf;
 598         const int buflen = INET6_ADDRSTRLEN;
 599         time_t now = system_get_rtime();
 600
 601         struct device_prefix *prefix;
 602         list_for_each_entry(prefix, &prefixes, head) {
 603                 struct device_prefix_assignment *assign;
 604                 list_for_each_entry(assign, &prefix->assignments, head) {
 605                         if (strcmp(assign->name, iface->name))
 606                                 continue;
 607
 608                         struct in6_addr addr = prefix->addr;
 609                         addr.s6_addr32[1] |= htonl(assign->assigned);
 610
 611                         a = blobmsg_open_table(&b, NULL);
 612
 613                         buf = blobmsg_alloc_string_buffer(&b, "address", buflen);
 614                         inet_ntop(AF_INET6, &addr, buf, buflen);
 615                         blobmsg_add_string_buffer(&b);
 616
 617                         blobmsg_add_u32(&b, "mask", assign->length);
 618
 619                         if (prefix->preferred_until) {
 620                                 int preferred = prefix->preferred_until - now;
 621                                 if (preferred < 0)
 622                                         preferred = 0;
 623                                 blobmsg_add_u32(&b, "preferred", preferred);
 624                         }
 625
 626                         if (prefix->valid_until)
 627                                 blobmsg_add_u32(&b, "valid", prefix->valid_until - now);
 628
 629                         blobmsg_close_table(&b, a);
 630                 }
 631         }
 632 }
 633
 634
 635 static void
 636 interface_ip_dump_dns_server_list(struct interface_ip_settings *ip,
 637                                   bool enabled)
 638 {
 639         struct dns_server *dns;
 640         int buflen = 128;
 641         char *buf;
 642
 643         vlist_simple_for_each_element(&ip->dns_servers, dns, node) {
 644                 if (ip->no_dns == enabled)
 645                         continue;
 646
 647                 buf = blobmsg_alloc_string_buffer(&b, NULL, buflen);
 648                 inet_ntop(dns->af, &dns->addr, buf, buflen);
 649                 blobmsg_add_string_buffer(&b);
 650         }
 651 }
 652
 653 static void
 654 interface_ip_dump_dns_search_list(struct interface_ip_settings *ip,
 655                                   bool enabled)
 656 {
 657         struct dns_search_domain *dns;
 658
 659         vlist_simple_for_each_element(&ip->dns_search, dns, node) {
 660                 if (ip->no_dns == enabled)
 661                         continue;
 662
 663                 blobmsg_add_string(&b, NULL, dns->name);
 664         }
 665 }
 666
 667 static void
 668 netifd_dump_status(struct interface *iface)
 669 {
 670         struct interface_data *data;
 671         struct device *dev;
 672         void *a, *inactive;
 673
 674         blobmsg_add_u8(&b, "up", iface->state == IFS_UP);
 675         blobmsg_add_u8(&b, "pending", iface->state == IFS_SETUP);
 676         blobmsg_add_u8(&b, "available", iface->available);
 677         blobmsg_add_u8(&b, "autostart", iface->autostart);
 678
 679         if (iface->state == IFS_UP) {
 680                 time_t cur = system_get_rtime();
 681                 blobmsg_add_u32(&b, "uptime", cur - iface->start_time);
 682                 if (iface->l3_dev.dev)
 683                         blobmsg_add_string(&b, "l3_device", iface->l3_dev.dev->ifname);
 684         }
 685
 686         if (iface->proto_handler)
 687                 blobmsg_add_string(&b, "proto", iface->proto_handler->name);
 688
 689         dev = iface->main_dev.dev;
 690         if (dev && !dev->hidden && iface->proto_handler &&
 691             !(iface->proto_handler->flags & PROTO_FLAG_NODEV))
 692                 blobmsg_add_string(&b, "device", dev->ifname);
 693
 694         if (iface->state == IFS_UP) {
 695                 if (iface->updated) {
 696                         a = blobmsg_open_array(&b, "updated");
 697
 698                         if (iface->updated & IUF_ADDRESS)
 699                                 blobmsg_add_string(&b, NULL, "addresses");
 700                         if (iface->updated & IUF_ROUTE)
 701                                 blobmsg_add_string(&b, NULL, "routes");
 702                         if (iface->updated & IUF_PREFIX)
 703                                 blobmsg_add_string(&b, NULL, "prefixes");
 704                         if (iface->updated & IUF_DATA)
 705                                 blobmsg_add_string(&b, NULL, "data");
 706
 707                         blobmsg_close_array(&b, a);
 708                 }
 709
 710                 if (iface->ip4table)
 711                         blobmsg_add_u32(&b, "ip4table", iface->ip4table);
 712                 if (iface->ip6table)
 713                         blobmsg_add_u32(&b, "ip6table", iface->ip6table);
 714                 blobmsg_add_u32(&b, "metric", iface->metric);
 715                 blobmsg_add_u8(&b, "delegation", !iface->proto_ip.no_delegation);
 716                 a = blobmsg_open_array(&b, "ipv4-address");
 717                 interface_ip_dump_address_list(&iface->config_ip, false, true);
 718                 interface_ip_dump_address_list(&iface->proto_ip, false, true);
 719                 blobmsg_close_array(&b, a);
 720                 a = blobmsg_open_array(&b, "ipv6-address");
 721                 interface_ip_dump_address_list(&iface->config_ip, true, true);
 722                 interface_ip_dump_address_list(&iface->proto_ip, true, true);
 723                 blobmsg_close_array(&b, a);
 724                 a = blobmsg_open_array(&b, "ipv6-prefix");
 725                 interface_ip_dump_prefix_list(&iface->config_ip);
 726                 interface_ip_dump_prefix_list(&iface->proto_ip);
 727                 blobmsg_close_array(&b, a);
 728                 a = blobmsg_open_array(&b, "ipv6-prefix-assignment");
 729                 interface_ip_dump_prefix_assignment_list(iface);
 730                 blobmsg_close_array(&b, a);
 731                 a = blobmsg_open_array(&b, "route");
 732                 interface_ip_dump_route_list(&iface->config_ip, true);
 733                 interface_ip_dump_route_list(&iface->proto_ip, true);
 734                 blobmsg_close_array(&b, a);
 735                 a = blobmsg_open_array(&b, "dns-server");
 736                 interface_ip_dump_dns_server_list(&iface->config_ip, true);
 737                 interface_ip_dump_dns_server_list(&iface->proto_ip, true);
 738                 blobmsg_close_array(&b, a);
 739                 a = blobmsg_open_array(&b, "dns-search");
 740                 interface_ip_dump_dns_search_list(&iface->config_ip, true);
 741                 interface_ip_dump_dns_search_list(&iface->proto_ip, true);
 742                 blobmsg_close_array(&b, a);
 743
 744                 inactive = blobmsg_open_table(&b, "inactive");
 745                 a = blobmsg_open_array(&b, "ipv4-address");
 746                 interface_ip_dump_address_list(&iface->config_ip, false, false);
 747                 interface_ip_dump_address_list(&iface->proto_ip, false, false);
 748                 blobmsg_close_array(&b, a);
 749                 a = blobmsg_open_array(&b, "ipv6-address");
 750                 interface_ip_dump_address_list(&iface->config_ip, true, false);
 751                 interface_ip_dump_address_list(&iface->proto_ip, true, false);
 752                 blobmsg_close_array(&b, a);
 753                 a = blobmsg_open_array(&b, "route");
 754                 interface_ip_dump_route_list(&iface->config_ip, false);
 755                 interface_ip_dump_route_list(&iface->proto_ip, false);
 756                 blobmsg_close_array(&b, a);
 757                 a = blobmsg_open_array(&b, "dns-server");
 758                 interface_ip_dump_dns_server_list(&iface->config_ip, false);
 759                 interface_ip_dump_dns_server_list(&iface->proto_ip, false);
 760                 blobmsg_close_array(&b, a);
 761                 a = blobmsg_open_array(&b, "dns-search");
 762                 interface_ip_dump_dns_search_list(&iface->config_ip, false);
 763                 interface_ip_dump_dns_search_list(&iface->proto_ip, false);
 764                 blobmsg_close_array(&b, a);
 765                 blobmsg_close_table(&b, inactive);
 766         }
 767
 768         a = blobmsg_open_table(&b, "data");
 769         avl_for_each_element(&iface->data, data, node)
 770                 blobmsg_add_blob(&b, data->data);
 771
 772         blobmsg_close_table(&b, a);
 773
 774         if (!list_empty(&iface->errors))
 775                 netifd_add_interface_errors(&b, iface);
 776 }
 777
 778 static int
 779 netifd_handle_status(struct ubus_context *ctx, struct ubus_object *obj,
 780                      struct ubus_request_data *req, const char *method,
 781                      struct blob_attr *msg)
 782 {
 783         struct interface *iface = container_of(obj, struct interface, ubus);
 784
 785         blob_buf_init(&b, 0);
 786         netifd_dump_status(iface);
 787         ubus_send_reply(ctx, req, b.head);
 788
 789         return 0;
 790 }
 791
 792
 793 static int
 794 netifd_handle_dump(struct ubus_context *ctx, struct ubus_object *obj,
 795                      struct ubus_request_data *req, const char *method,
 796                      struct blob_attr *msg)
 797 {
 798         blob_buf_init(&b, 0);
 799         void *a = blobmsg_open_array(&b, "interface");
 800
 801         struct interface *iface;
 802         vlist_for_each_element(&interfaces, iface, node) {
 803                 void *i = blobmsg_open_table(&b, NULL);
 804                 blobmsg_add_string(&b, "interface", iface->name);
 805                 netifd_dump_status(iface);
 806                 blobmsg_close_table(&b, i);
 807         }
 808
 809         blobmsg_close_array(&b, a);
 810         ubus_send_reply(ctx, req, b.head);
 811
 812         return 0;
 813 }
 814
 815 enum {
 816         DEV_LINK_NAME,
 817         DEV_LINK_EXT,
 818         __DEV_LINK_MAX,
 819 };
 820
 821 static const struct blobmsg_policy dev_link_policy[__DEV_LINK_MAX] = {
 822         [DEV_LINK_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
 823         [DEV_LINK_EXT] = { .name = "link-ext", .type = BLOBMSG_TYPE_BOOL },
 824 };
 825
 826 static int
 827 netifd_iface_handle_device(struct ubus_context *ctx, struct ubus_object *obj,
 828                            struct ubus_request_data *req, const char *method,
 829                            struct blob_attr *msg)
 830 {
 831         struct blob_attr *tb[__DEV_LINK_MAX];
 832         struct blob_attr *cur;
 833         struct interface *iface;
 834         bool add = !strncmp(method, "add", 3);
 835         bool link_ext = true;
 836
 837         iface = container_of(obj, struct interface, ubus);
 838
 839         blobmsg_parse(dev_link_policy, __DEV_LINK_MAX, tb, blob_data(msg), blob_len(msg));
 840
 841         if (!tb[DEV_LINK_NAME])
 842                 return UBUS_STATUS_INVALID_ARGUMENT;
 843
 844         cur = tb[DEV_LINK_EXT];
 845         if (cur)
 846                 link_ext = !!blobmsg_get_u8(cur);
 847
 848         return interface_handle_link(iface, blobmsg_data(tb[DEV_LINK_NAME]), add, link_ext);
 849 }
 850
 851
 852 static int
 853 netifd_iface_notify_proto(struct ubus_context *ctx, struct ubus_object *obj,
 854                           struct ubus_request_data *req, const char *method,
 855                           struct blob_attr *msg)
 856 {
 857         struct interface *iface;
 858
 859         iface = container_of(obj, struct interface, ubus);
 860
 861         if (!iface->proto || !iface->proto->notify)
 862                 return UBUS_STATUS_NOT_SUPPORTED;
 863
 864         return iface->proto->notify(iface->proto, msg);
 865 }
 866
 867 static void
 868 netifd_iface_do_remove(struct uloop_timeout *timeout)
 869 {
 870         struct interface *iface;
 871
 872         iface = container_of(timeout, struct interface, remove_timer);
 873         vlist_delete(&interfaces, &iface->node);
 874 }
 875
 876 static int
 877 netifd_iface_remove(struct ubus_context *ctx, struct ubus_object *obj,
 878                     struct ubus_request_data *req, const char *method,
 879                     struct blob_attr *msg)
 880 {
 881         struct interface *iface;
 882
 883         iface = container_of(obj, struct interface, ubus);
 884         if (iface->remove_timer.cb)
 885                 return UBUS_STATUS_INVALID_ARGUMENT;
 886
 887         iface->remove_timer.cb = netifd_iface_do_remove;
 888         uloop_timeout_set(&iface->remove_timer, 100);
 889         return 0;
 890 }
 891
 892 static int
 893 netifd_handle_iface_prepare(struct ubus_context *ctx, struct ubus_object *obj,
 894                             struct ubus_request_data *req, const char *method,
 895                             struct blob_attr *msg)
 896 {
 897         struct interface *iface;
 898         struct device *dev;
 899         const struct device_hotplug_ops *ops;
 900
 901         iface = container_of(obj, struct interface, ubus);
 902         dev = iface->main_dev.dev;
 903         if (!dev)
 904                 return 0;
 905
 906         ops = dev->hotplug_ops;
 907         if (!ops)
 908                 return 0;
 909
 910         return ops->prepare(dev);
 911 }
 912
 913 static int
 914 netifd_handle_set_data(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 *cur;
 920         int rem, ret;
 921
 922         iface = container_of(obj, struct interface, ubus);
 923
 924         blob_for_each_attr(cur, msg, rem) {
 925                 ret = interface_add_data(iface, cur);
 926                 if (ret)
 927                         return ret;
 928         }
 929
 930         return 0;
 931 }
 932
 933 static struct ubus_method iface_object_methods[] = {
 934         { .name = "up", .handler = netifd_handle_up },
 935         { .name = "down", .handler = netifd_handle_down },
 936         { .name = "status", .handler = netifd_handle_status },
 937         { .name = "prepare", .handler = netifd_handle_iface_prepare },
 938         { .name = "dump", .handler = netifd_handle_dump },
 939         UBUS_METHOD("add_device", netifd_iface_handle_device, dev_link_policy ),
 940         UBUS_METHOD("remove_device", netifd_iface_handle_device, dev_link_policy ),
 941         { .name = "notify_proto", .handler = netifd_iface_notify_proto },
 942         { .name = "remove", .handler = netifd_iface_remove },
 943         { .name = "set_data", .handler = netifd_handle_set_data },
 944 };
 945
 946 static struct ubus_object_type iface_object_type =
 947         UBUS_OBJECT_TYPE("netifd_iface", iface_object_methods);
 948
 949
 950 static struct ubus_object iface_object = {
 951         .name = "network.interface",
 952         .type = &iface_object_type,
 953         .n_methods = ARRAY_SIZE(iface_object_methods),
 954 };
 955
 956 static void netifd_add_object(struct ubus_object *obj)
 957 {
 958         int ret = ubus_add_object(ubus_ctx, obj);
 959
 960         if (ret != 0)
 961                 fprintf(stderr, "Failed to publish object '%s': %s\n", obj->name, ubus_strerror(ret));
 962 }
 963
 964 static const struct blobmsg_policy iface_policy = {
 965         .name = "interface",
 966         .type = BLOBMSG_TYPE_STRING,
 967 };
 968
 969 static int
 970 netifd_handle_iface(struct ubus_context *ctx, struct ubus_object *obj,
 971                     struct ubus_request_data *req, const char *method,
 972                     struct blob_attr *msg)
 973 {
 974         struct interface *iface;
 975         struct blob_attr *tb;
 976         int i;
 977
 978         blobmsg_parse(&iface_policy, 1, &tb, blob_data(msg), blob_len(msg));
 979         if (!tb)
 980                 return UBUS_STATUS_INVALID_ARGUMENT;
 981
 982         iface = vlist_find(&interfaces, blobmsg_data(tb), iface, node);
 983         if (!iface)
 984                 return UBUS_STATUS_NOT_FOUND;
 985
 986         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
 987                 ubus_handler_t cb;
 988
 989                 if (strcmp(method, iface_object_methods[i].name) != 0)
 990                         continue;
 991
 992                 cb = iface_object_methods[i].handler;
 993                 return cb(ctx, &iface->ubus, req, method, msg);
 994         }
 995
 996         return UBUS_STATUS_INVALID_ARGUMENT;
 997 }
 998
 999 static void netifd_add_iface_object(void)
1000 {
1001         struct ubus_method *methods;
1002         int i;
1003
1004         methods = calloc(1, sizeof(iface_object_methods));
1005         memcpy(methods, iface_object_methods, sizeof(iface_object_methods));
1006         iface_object.methods = methods;
1007
1008         for (i = 0; i < ARRAY_SIZE(iface_object_methods); i++) {
1009                 if (methods[i].handler == netifd_handle_dump)
1010                         continue;
1011
1012                 methods[i].handler = netifd_handle_iface;
1013                 methods[i].policy = &iface_policy;
1014                 methods[i].n_policy = 1;
1015         }
1016         netifd_add_object(&iface_object);
1017 }
1018
1019 static struct wireless_device *
1020 get_wdev(struct blob_attr *msg, int *ret)
1021 {
1022         struct blobmsg_policy wdev_policy = {
1023                 .name = "device",
1024                 .type = BLOBMSG_TYPE_STRING,
1025         };
1026         struct blob_attr *dev_attr;
1027         struct wireless_device *wdev = NULL;
1028
1029
1030         blobmsg_parse(&wdev_policy, 1, &dev_attr, blob_data(msg), blob_len(msg));
1031         if (!dev_attr) {
1032                 *ret = UBUS_STATUS_INVALID_ARGUMENT;
1033                 return NULL;
1034         }
1035
1036         wdev = vlist_find(&wireless_devices, blobmsg_data(dev_attr), wdev, node);
1037         if (!wdev) {
1038                 *ret = UBUS_STATUS_NOT_FOUND;
1039                 return NULL;
1040         }
1041
1042         *ret = 0;
1043         return wdev;
1044 }
1045
1046 static int
1047 netifd_handle_wdev_up(struct ubus_context *ctx, struct ubus_object *obj,
1048                       struct ubus_request_data *req, const char *method,
1049                       struct blob_attr *msg)
1050 {
1051         struct wireless_device *wdev;
1052         int ret;
1053
1054         wdev = get_wdev(msg, &ret);
1055         if (ret == UBUS_STATUS_NOT_FOUND)
1056                 return ret;
1057
1058         if (wdev) {
1059                 wireless_device_set_up(wdev);
1060         } else {
1061                 vlist_for_each_element(&wireless_devices, wdev, node)
1062                         wireless_device_set_up(wdev);
1063         }
1064
1065         return 0;
1066 }
1067
1068 static int
1069 netifd_handle_wdev_down(struct ubus_context *ctx, struct ubus_object *obj,
1070                         struct ubus_request_data *req, const char *method,
1071                         struct blob_attr *msg)
1072 {
1073         struct wireless_device *wdev;
1074         int ret;
1075
1076         wdev = get_wdev(msg, &ret);
1077         if (ret == UBUS_STATUS_NOT_FOUND)
1078                 return ret;
1079
1080         if (wdev) {
1081                 wireless_device_set_down(wdev);
1082         } else {
1083                 vlist_for_each_element(&wireless_devices, wdev, node)
1084                         wireless_device_set_down(wdev);
1085         }
1086
1087         return 0;
1088 }
1089
1090 static int
1091 netifd_handle_wdev_status(struct ubus_context *ctx, struct ubus_object *obj,
1092                           struct ubus_request_data *req, const char *method,
1093                           struct blob_attr *msg)
1094 {
1095         struct wireless_device *wdev;
1096         int ret;
1097
1098         wdev = get_wdev(msg, &ret);
1099         if (ret == UBUS_STATUS_NOT_FOUND)
1100                 return ret;
1101
1102         blob_buf_init(&b, 0);
1103         if (wdev) {
1104                 wireless_device_status(wdev, &b);
1105         } else {
1106                 vlist_for_each_element(&wireless_devices, wdev, node)
1107                         wireless_device_status(wdev, &b);
1108         }
1109         ubus_send_reply(ctx, req, b.head);
1110         return 0;
1111 }
1112
1113 static int
1114 netifd_handle_wdev_get_validate(struct ubus_context *ctx, struct ubus_object *obj,
1115                           struct ubus_request_data *req, const char *method,
1116                           struct blob_attr *msg)
1117 {
1118         struct wireless_device *wdev;
1119         int ret;
1120
1121         wdev = get_wdev(msg, &ret);
1122         if (ret == UBUS_STATUS_NOT_FOUND)
1123                 return ret;
1124
1125         blob_buf_init(&b, 0);
1126         if (wdev) {
1127                 wireless_device_get_validate(wdev, &b);
1128         } else {
1129                 vlist_for_each_element(&wireless_devices, wdev, node)
1130                         wireless_device_get_validate(wdev, &b);
1131         }
1132         ubus_send_reply(ctx, req, b.head);
1133         return 0;
1134 }
1135
1136 static int
1137 netifd_handle_wdev_notify(struct ubus_context *ctx, struct ubus_object *obj,
1138                           struct ubus_request_data *req, const char *method,
1139                           struct blob_attr *msg)
1140 {
1141         struct wireless_device *wdev;
1142         int ret;
1143
1144         wdev = get_wdev(msg, &ret);
1145         if (!wdev)
1146                 return ret;
1147
1148         return wireless_device_notify(wdev, msg, req);
1149 }
1150
1151 static struct ubus_method wireless_object_methods[] = {
1152         { .name = "up", .handler = netifd_handle_wdev_up },
1153         { .name = "down", .handler = netifd_handle_wdev_down },
1154         { .name = "status", .handler = netifd_handle_wdev_status },
1155         { .name = "notify", .handler = netifd_handle_wdev_notify },
1156         { .name = "get_validate", .handler = netifd_handle_wdev_get_validate },
1157 };
1158
1159 static struct ubus_object_type wireless_object_type =
1160         UBUS_OBJECT_TYPE("netifd_iface", wireless_object_methods);
1161
1162
1163 static struct ubus_object wireless_object = {
1164         .name = "network.wireless",
1165         .type = &wireless_object_type,
1166         .methods = wireless_object_methods,
1167         .n_methods = ARRAY_SIZE(wireless_object_methods),
1168 };
1169
1170 int
1171 netifd_ubus_init(const char *path)
1172 {
1173         uloop_init();
1174         ubus_path = path;
1175
1176         ubus_ctx = ubus_connect(path);
1177         if (!ubus_ctx)
1178                 return -EIO;
1179
1180         DPRINTF("connected as %08x\n", ubus_ctx->local_id);
1181         ubus_ctx->connection_lost = netifd_ubus_connection_lost;
1182         netifd_ubus_add_fd();
1183
1184         netifd_add_object(&main_object);
1185         netifd_add_object(&dev_object);
1186         netifd_add_object(&wireless_object);
1187         netifd_add_iface_object();
1188
1189         return 0;
1190 }
1191
1192 void
1193 netifd_ubus_done(void)
1194 {
1195         ubus_free(ubus_ctx);
1196 }
1197
1198 void
1199 netifd_ubus_interface_event(struct interface *iface, bool up)
1200 {
1201         blob_buf_init(&b, 0);
1202         blobmsg_add_string(&b, "action", up ? "ifup" : "ifdown");
1203         blobmsg_add_string(&b, "interface", iface->name);
1204         ubus_send_event(ubus_ctx, "network.interface", b.head);
1205 }
1206
1207 void
1208 netifd_ubus_interface_notify(struct interface *iface, bool up)
1209 {
1210         const char *event = (up) ? "interface.update" : "interface.down";
1211         blob_buf_init(&b, 0);
1212         blobmsg_add_string(&b, "interface", iface->name);
1213         netifd_dump_status(iface);
1214         ubus_notify(ubus_ctx, &iface_object, event, b.head, -1);
1215         ubus_notify(ubus_ctx, &iface->ubus, event, b.head, -1);
1216 }
1217
1218 void
1219 netifd_ubus_add_interface(struct interface *iface)
1220 {
1221         struct ubus_object *obj = &iface->ubus;
1222         char *name = NULL;
1223
1224         if (asprintf(&name, "%s.interface.%s", main_object.name, iface->name) == -1)
1225                 return;
1226
1227         obj->name = name;
1228         obj->type = &iface_object_type;
1229         obj->methods = iface_object_methods;
1230         obj->n_methods = ARRAY_SIZE(iface_object_methods);
1231         if (ubus_add_object(ubus_ctx, &iface->ubus)) {
1232                 DPRINTF("failed to publish ubus object for interface '%s'\n", iface->name);
1233                 free(name);
1234                 obj->name = NULL;
1235         }
1236 }
1237
1238 void
1239 netifd_ubus_remove_interface(struct interface *iface)
1240 {
1241         if (!iface->ubus.name)
1242                 return;
1243
1244         ubus_remove_object(ubus_ctx, &iface->ubus);
1245         free((void *) iface->ubus.name);
1246 }