iwinfo.c

   1 /*
   2  * rpcd - UBUS RPC server
   3  *
   4  *   Copyright (C) 2013-2014 Jo-Philipp Wich <jow@openwrt.org>
   5  *
   6  * Permission to use, copy, modify, and/or distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20 #include <dirent.h>
  21 #include <libubus.h>
  22 #include <iwinfo.h>
  23 #include <iwinfo/utils.h>
  24 #include <net/ethernet.h>
  25
  26 #ifdef linux
  27 #include <netinet/ether.h>
  28 #endif
  29
  30 #include <rpcd/plugin.h>
  31
  32
  33 static struct blob_buf buf;
  34 static const struct iwinfo_ops *iw;
  35 static const char *ifname;
  36
  37 enum {
  38         RPC_D_DEVICE,
  39         __RPC_D_MAX,
  40 };
  41
  42 static const struct blobmsg_policy rpc_device_policy[__RPC_D_MAX] = {
  43         [RPC_D_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
  44 };
  45
  46 enum {
  47         RPC_A_DEVICE,
  48         RPC_A_MACADDR,
  49         __RPC_A_MAX,
  50 };
  51
  52 static const struct blobmsg_policy rpc_assoclist_policy[__RPC_A_MAX] = {
  53         [RPC_A_DEVICE] = { .name = "device", .type = BLOBMSG_TYPE_STRING },
  54         [RPC_A_MACADDR] = { .name = "mac", .type = BLOBMSG_TYPE_STRING },
  55 };
  56
  57 enum {
  58         RPC_U_SECTION,
  59         __RPC_U_MAX
  60 };
  61
  62 static const struct blobmsg_policy rpc_uci_policy[__RPC_U_MAX] = {
  63         [RPC_U_SECTION] = { .name = "section", .type = BLOBMSG_TYPE_STRING },
  64 };
  65
  66 static int
  67 __rpc_iwinfo_open(struct blob_attr *device)
  68 {
  69         if (!device)
  70                 return UBUS_STATUS_INVALID_ARGUMENT;
  71
  72         ifname = blobmsg_data(device);
  73         iw = iwinfo_backend(ifname);
  74
  75         return iw ? UBUS_STATUS_OK : UBUS_STATUS_NOT_FOUND;
  76 }
  77
  78 static int
  79 rpc_iwinfo_open(struct blob_attr *msg)
  80 {
  81         static struct blob_attr *tb[__RPC_D_MAX];
  82
  83         blobmsg_parse(rpc_device_policy, __RPC_D_MAX, tb,
  84                       blob_data(msg), blob_len(msg));
  85
  86         return __rpc_iwinfo_open(tb[RPC_D_DEVICE]);
  87 }
  88
  89 static void
  90 rpc_iwinfo_close(void)
  91 {
  92         iw = NULL;
  93         ifname = NULL;
  94         iwinfo_finish();
  95 }
  96
  97 static void
  98 rpc_iwinfo_call_int(const char *name, int (*func)(const char *, int *),
  99                     const char **map)
 100 {
 101         int rv;
 102
 103         if (!func(ifname, &rv))
 104         {
 105                 if (!map)
 106                         blobmsg_add_u32(&buf, name, rv);
 107                 else
 108                         blobmsg_add_string(&buf, name, map[rv]);
 109         }
 110 }
 111
 112 static void
 113 rpc_iwinfo_call_hardware_id(const char *name)
 114 {
 115         struct iwinfo_hardware_id ids;
 116         void *c;
 117
 118         if (!iw->hardware_id(ifname, (char *)&ids))
 119         {
 120                 c = blobmsg_open_array(&buf, name);
 121
 122                 blobmsg_add_u32(&buf, NULL, ids.vendor_id);
 123                 blobmsg_add_u32(&buf, NULL, ids.device_id);
 124                 blobmsg_add_u32(&buf, NULL, ids.subsystem_vendor_id);
 125                 blobmsg_add_u32(&buf, NULL, ids.subsystem_device_id);
 126
 127                 blobmsg_close_array(&buf, c);
 128         }
 129 }
 130
 131 static void
 132 rpc_iwinfo_add_encryption(const char *name, struct iwinfo_crypto_entry *e)
 133 {
 134         int ciph;
 135         void *c, *d;
 136
 137         c = blobmsg_open_table(&buf, name);
 138
 139         blobmsg_add_u8(&buf, "enabled", e->enabled);
 140
 141         if (e->enabled)
 142         {
 143                 if (!e->wpa_version)
 144                 {
 145                         d = blobmsg_open_array(&buf, "wep");
 146
 147                         if (e->auth_algs & IWINFO_AUTH_OPEN)
 148                                 blobmsg_add_string(&buf, NULL, "open");
 149
 150                         if (e->auth_algs & IWINFO_AUTH_SHARED)
 151                                 blobmsg_add_string(&buf, NULL, "shared");
 152
 153                         blobmsg_close_array(&buf, d);
 154                 }
 155                 else
 156                 {
 157                         d = blobmsg_open_array(&buf, "wpa");
 158
 159                         if (e->wpa_version > 2)
 160                         {
 161                                 blobmsg_add_u32(&buf, NULL, 1);
 162                                 blobmsg_add_u32(&buf, NULL, 2);
 163                         }
 164                         else
 165                         {
 166                                 blobmsg_add_u32(&buf, NULL, e->wpa_version);
 167                         }
 168
 169                         blobmsg_close_array(&buf, d);
 170
 171
 172                         d = blobmsg_open_array(&buf, "authentication");
 173
 174                         if (e->auth_suites & IWINFO_KMGMT_PSK)
 175                                 blobmsg_add_string(&buf, NULL, "psk");
 176
 177                         if (e->auth_suites & IWINFO_KMGMT_8021x)
 178                                 blobmsg_add_string(&buf, NULL, "802.1x");
 179
 180                         if (!e->auth_suites ||
 181                                 (e->auth_suites & IWINFO_KMGMT_NONE))
 182                                 blobmsg_add_string(&buf, NULL, "none");
 183
 184                         blobmsg_close_array(&buf, d);
 185                 }
 186
 187                 d = blobmsg_open_array(&buf, "ciphers");
 188                 ciph = e->pair_ciphers | e->group_ciphers;
 189
 190                 if (ciph & IWINFO_CIPHER_WEP40)
 191                         blobmsg_add_string(&buf, NULL, "wep-40");
 192
 193                 if (ciph & IWINFO_CIPHER_WEP104)
 194                         blobmsg_add_string(&buf, NULL, "wep-104");
 195
 196                 if (ciph & IWINFO_CIPHER_TKIP)
 197                         blobmsg_add_string(&buf, NULL, "tkip");
 198
 199                 if (ciph & IWINFO_CIPHER_CCMP)
 200                         blobmsg_add_string(&buf, NULL, "ccmp");
 201
 202                 if (ciph & IWINFO_CIPHER_WRAP)
 203                         blobmsg_add_string(&buf, NULL, "wrap");
 204
 205                 if (ciph & IWINFO_CIPHER_AESOCB)
 206                         blobmsg_add_string(&buf, NULL, "aes-ocb");
 207
 208                 if (ciph & IWINFO_CIPHER_CKIP)
 209                         blobmsg_add_string(&buf, NULL, "ckip");
 210
 211                 if (!ciph || (ciph & IWINFO_CIPHER_NONE))
 212                         blobmsg_add_string(&buf, NULL, "none");
 213
 214                 blobmsg_close_array(&buf, d);
 215         }
 216
 217         blobmsg_close_table(&buf, c);
 218 }
 219
 220 static void
 221 rpc_iwinfo_call_encryption(const char *name)
 222 {
 223         struct iwinfo_crypto_entry crypto = { 0 };
 224
 225         if (!iw->encryption(ifname, (char *)&crypto))
 226                 rpc_iwinfo_add_encryption(name, &crypto);
 227 }
 228
 229 static void
 230 rpc_iwinfo_call_hwmodes(const char *name)
 231 {
 232         int modes;
 233         void *c;
 234
 235         if (!iw->hwmodelist(ifname, &modes))
 236         {
 237                 c = blobmsg_open_array(&buf, name);
 238
 239                 if (modes & IWINFO_80211_AC)
 240                         blobmsg_add_string(&buf, NULL, "ac");
 241
 242                 if (modes & IWINFO_80211_A)
 243                         blobmsg_add_string(&buf, NULL, "a");
 244
 245                 if (modes & IWINFO_80211_B)
 246                         blobmsg_add_string(&buf, NULL, "b");
 247
 248                 if (modes & IWINFO_80211_G)
 249                         blobmsg_add_string(&buf, NULL, "g");
 250
 251                 if (modes & IWINFO_80211_N)
 252                         blobmsg_add_string(&buf, NULL, "n");
 253
 254                 blobmsg_close_array(&buf, c);
 255         }
 256 }
 257
 258 static void
 259 rpc_iwinfo_call_str(const char *name, int (*func)(const char *, char *))
 260 {
 261         char rv[IWINFO_BUFSIZE] = { 0 };
 262
 263         if (!func(ifname, rv))
 264                 blobmsg_add_string(&buf, name, rv);
 265 }
 266
 267 static int
 268 rpc_iwinfo_info(struct ubus_context *ctx, struct ubus_object *obj,
 269                 struct ubus_request_data *req, const char *method,
 270                 struct blob_attr *msg)
 271 {
 272         int rv;
 273         void *c;
 274
 275         rv = rpc_iwinfo_open(msg);
 276
 277         if (rv)
 278                 return rv;
 279
 280         blob_buf_init(&buf, 0);
 281
 282         rpc_iwinfo_call_str("phy", iw->phyname);
 283
 284         rpc_iwinfo_call_str("ssid", iw->ssid);
 285         rpc_iwinfo_call_str("bssid", iw->bssid);
 286         rpc_iwinfo_call_str("country", iw->country);
 287
 288         rpc_iwinfo_call_int("mode", iw->mode, IWINFO_OPMODE_NAMES);
 289         rpc_iwinfo_call_int("channel", iw->channel, NULL);
 290
 291         rpc_iwinfo_call_int("frequency", iw->frequency, NULL);
 292         rpc_iwinfo_call_int("frequency_offset", iw->frequency_offset, NULL);
 293
 294         rpc_iwinfo_call_int("txpower", iw->txpower, NULL);
 295         rpc_iwinfo_call_int("txpower_offset", iw->txpower_offset, NULL);
 296
 297         rpc_iwinfo_call_int("quality", iw->quality, NULL);
 298         rpc_iwinfo_call_int("quality_max", iw->quality_max, NULL);
 299
 300         rpc_iwinfo_call_int("signal", iw->signal, NULL);
 301         rpc_iwinfo_call_int("noise", iw->noise, NULL);
 302
 303         rpc_iwinfo_call_int("bitrate", iw->bitrate, NULL);
 304
 305         rpc_iwinfo_call_encryption("encryption");
 306         rpc_iwinfo_call_hwmodes("hwmodes");
 307
 308         c = blobmsg_open_table(&buf, "hardware");
 309         rpc_iwinfo_call_hardware_id("id");
 310         rpc_iwinfo_call_str("name", iw->hardware_name);
 311         blobmsg_close_table(&buf, c);
 312
 313         ubus_send_reply(ctx, req, buf.head);
 314
 315         rpc_iwinfo_close();
 316
 317         return UBUS_STATUS_OK;
 318 }
 319
 320 static int
 321 rpc_iwinfo_scan(struct ubus_context *ctx, struct ubus_object *obj,
 322                 struct ubus_request_data *req, const char *method,
 323                 struct blob_attr *msg)
 324 {
 325         int i, rv, len;
 326         void *c, *d;
 327         char mac[18];
 328         char res[IWINFO_BUFSIZE];
 329         struct iwinfo_scanlist_entry *e;
 330
 331         rv = rpc_iwinfo_open(msg);
 332
 333         if (rv)
 334                 return rv;
 335
 336         blob_buf_init(&buf, 0);
 337
 338         c = blobmsg_open_array(&buf, "results");
 339
 340         if (!iw->scanlist(ifname, res, &len) && (len > 0))
 341         {
 342                 for (i = 0; i < len; i += sizeof(struct iwinfo_scanlist_entry))
 343                 {
 344                         e = (struct iwinfo_scanlist_entry *)&res[i];
 345                         d = blobmsg_open_table(&buf, NULL);
 346
 347                         if (e->ssid[0])
 348                                 blobmsg_add_string(&buf, "ssid", (const char *)e->ssid);
 349
 350                         snprintf(mac, sizeof(mac), "%02X:%02X:%02X:%02X:%02X:%02X",
 351                                          e->mac[0], e->mac[1], e->mac[2],
 352                                          e->mac[3], e->mac[4], e->mac[5]);
 353
 354                         blobmsg_add_string(&buf, "bssid", mac);
 355
 356                         blobmsg_add_string(&buf, "mode", IWINFO_OPMODE_NAMES[e->mode]);
 357
 358                         blobmsg_add_u32(&buf, "channel", e->channel);
 359                         blobmsg_add_u32(&buf, "signal", (uint32_t)(e->signal - 0x100));
 360
 361                         blobmsg_add_u32(&buf, "quality", e->quality);
 362                         blobmsg_add_u32(&buf, "quality_max", e->quality_max);
 363
 364                         rpc_iwinfo_add_encryption("encryption", &e->crypto);
 365
 366                         blobmsg_close_table(&buf, d);
 367                 }
 368         }
 369
 370         blobmsg_close_array(&buf, c);
 371
 372         ubus_send_reply(ctx, req, buf.head);
 373
 374         rpc_iwinfo_close();
 375
 376         return UBUS_STATUS_OK;
 377 }
 378
 379 static int
 380 rpc_iwinfo_assoclist(struct ubus_context *ctx, struct ubus_object *obj,
 381                      struct ubus_request_data *req, const char *method,
 382                      struct blob_attr *msg)
 383 {
 384         int i, rv, len;
 385         char mac[18];
 386         char res[IWINFO_BUFSIZE];
 387         struct iwinfo_assoclist_entry *a;
 388         struct ether_addr *macaddr = NULL;
 389         void *c, *d, *e;
 390         struct blob_attr *tb[__RPC_A_MAX];
 391         bool found = false;
 392
 393         blobmsg_parse(rpc_assoclist_policy, __RPC_A_MAX, tb,
 394                       blob_data(msg), blob_len(msg));
 395
 396         rv = __rpc_iwinfo_open(tb[RPC_A_DEVICE]);
 397         if (rv)
 398                 return rv;
 399
 400         if (tb[RPC_A_MACADDR])
 401                 macaddr = ether_aton(blobmsg_data(tb[RPC_A_MACADDR]));
 402
 403         blob_buf_init(&buf, 0);
 404
 405         if (!macaddr)
 406                 c = blobmsg_open_array(&buf, "results");
 407
 408         if (!iw->assoclist(ifname, res, &len) && (len > 0))
 409         {
 410                 for (i = 0; i < len; i += sizeof(struct iwinfo_assoclist_entry))
 411                 {
 412                         a = (struct iwinfo_assoclist_entry *)&res[i];
 413
 414                         if (!macaddr)
 415                                 d = blobmsg_open_table(&buf, NULL);
 416                         else if (memcmp(macaddr, a->mac, ETH_ALEN) != 0)
 417                                 continue;
 418
 419                         snprintf(mac, sizeof(mac), "%02X:%02X:%02X:%02X:%02X:%02X",
 420                                          a->mac[0], a->mac[1], a->mac[2],
 421                                          a->mac[3], a->mac[4], a->mac[5]);
 422
 423                         blobmsg_add_string(&buf, "mac", mac);
 424                         blobmsg_add_u32(&buf, "signal", a->signal);
 425                         blobmsg_add_u32(&buf, "noise", a->noise);
 426                         blobmsg_add_u32(&buf, "inactive", a->inactive);
 427
 428                         e = blobmsg_open_table(&buf, "rx");
 429                         blobmsg_add_u32(&buf, "rate", a->rx_rate.rate);
 430                         blobmsg_add_u32(&buf, "mcs", a->rx_rate.mcs);
 431                         blobmsg_add_u8(&buf, "40mhz", a->rx_rate.is_40mhz);
 432                         blobmsg_add_u8(&buf, "short_gi", a->rx_rate.is_short_gi);
 433                         blobmsg_close_table(&buf, e);
 434
 435                         e = blobmsg_open_table(&buf, "tx");
 436                         blobmsg_add_u32(&buf, "rate", a->tx_rate.rate);
 437                         blobmsg_add_u32(&buf, "mcs", a->tx_rate.mcs);
 438                         blobmsg_add_u8(&buf, "40mhz", a->tx_rate.is_40mhz);
 439                         blobmsg_add_u8(&buf, "short_gi", a->tx_rate.is_short_gi);
 440                         blobmsg_close_table(&buf, e);
 441
 442                         found = true;
 443                         if (!macaddr)
 444                                 blobmsg_close_table(&buf, d);
 445                         else
 446                                 break;
 447                 }
 448         }
 449
 450         if (!macaddr)
 451                 blobmsg_close_array(&buf, c);
 452         else if (!found)
 453                 return UBUS_STATUS_NOT_FOUND;
 454
 455         ubus_send_reply(ctx, req, buf.head);
 456
 457         rpc_iwinfo_close();
 458
 459         return UBUS_STATUS_OK;
 460 }
 461
 462 static int
 463 rpc_iwinfo_freqlist(struct ubus_context *ctx, struct ubus_object *obj,
 464                     struct ubus_request_data *req, const char *method,
 465                     struct blob_attr *msg)
 466 {
 467         int i, rv, len, ch;
 468         char res[IWINFO_BUFSIZE];
 469         struct iwinfo_freqlist_entry *f;
 470         void *c, *d;
 471
 472         rv = rpc_iwinfo_open(msg);
 473
 474         if (rv)
 475                 return rv;
 476
 477         blob_buf_init(&buf, 0);
 478
 479         c = blobmsg_open_array(&buf, "results");
 480
 481         if (!iw->freqlist(ifname, res, &len) && (len > 0))
 482         {
 483                 if (iw->channel(ifname, &ch))
 484                         ch = -1;
 485
 486                 for (i = 0; i < len; i += sizeof(struct iwinfo_freqlist_entry))
 487                 {
 488                         f = (struct iwinfo_freqlist_entry *)&res[i];
 489                         d = blobmsg_open_table(&buf, NULL);
 490
 491                         blobmsg_add_u32(&buf, "channel", f->channel);
 492                         blobmsg_add_u32(&buf, "mhz", f->mhz);
 493                         blobmsg_add_u8(&buf, "restricted", f->restricted);
 494
 495                         if (ch > -1)
 496                                 blobmsg_add_u8(&buf, "active", f->channel == ch);
 497
 498                         blobmsg_close_table(&buf, d);
 499                 }
 500         }
 501
 502         blobmsg_close_array(&buf, c);
 503
 504         ubus_send_reply(ctx, req, buf.head);
 505
 506         rpc_iwinfo_close();
 507
 508         return UBUS_STATUS_OK;
 509 }
 510
 511 static int
 512 rpc_iwinfo_txpowerlist(struct ubus_context *ctx, struct ubus_object *obj,
 513                        struct ubus_request_data *req, const char *method,
 514                        struct blob_attr *msg)
 515 {
 516         int i, rv, len, pwr, off;
 517         char res[IWINFO_BUFSIZE];
 518         struct iwinfo_txpwrlist_entry *t;
 519         void *c, *d;
 520
 521         rv = rpc_iwinfo_open(msg);
 522
 523         if (rv)
 524                 return rv;
 525
 526         blob_buf_init(&buf, 0);
 527
 528         c = blobmsg_open_array(&buf, "results");
 529
 530         if (!iw->txpwrlist(ifname, res, &len) && (len > 0))
 531         {
 532                 if (iw->txpower(ifname, &pwr))
 533                         pwr = -1;
 534
 535                 if (iw->txpower_offset(ifname, &off))
 536                         off = 0;
 537
 538                 for (i = 0; i < len; i += sizeof(struct iwinfo_txpwrlist_entry))
 539                 {
 540                         t = (struct iwinfo_txpwrlist_entry *)&res[i];
 541                         d = blobmsg_open_table(&buf, NULL);
 542
 543                         blobmsg_add_u32(&buf, "dbm", t->dbm + off);
 544                         blobmsg_add_u32(&buf, "mw", iwinfo_dbm2mw(t->dbm + off));
 545
 546                         if (pwr > -1)
 547                                 blobmsg_add_u8(&buf, "active", t->dbm == pwr);
 548
 549                         blobmsg_close_table(&buf, d);
 550                 }
 551         }
 552
 553         blobmsg_close_array(&buf, c);
 554
 555         ubus_send_reply(ctx, req, buf.head);
 556
 557         rpc_iwinfo_close();
 558
 559         return UBUS_STATUS_OK;
 560 }
 561
 562 static const char *
 563 rpc_iwinfo_lookup_country(char *buf, int len, int iso3166)
 564 {
 565         int i;
 566         static char ccode[5];
 567         struct iwinfo_country_entry *c;
 568
 569         for (i = 0; i < len; i += sizeof(struct iwinfo_country_entry))
 570         {
 571                 c = (struct iwinfo_country_entry *)&buf[i];
 572
 573                 if (c->iso3166 == iso3166)
 574                 {
 575                         snprintf(ccode, sizeof(ccode), "%s", c->ccode);
 576                         return ccode;
 577                 }
 578         }
 579
 580         return NULL;
 581 }
 582
 583 static int
 584 rpc_iwinfo_countrylist(struct ubus_context *ctx, struct ubus_object *obj,
 585                        struct ubus_request_data *req, const char *method,
 586                        struct blob_attr *msg)
 587 {
 588         int rv, len;
 589         char cur[3];
 590         char iso3166[3];
 591         char res[IWINFO_BUFSIZE];
 592         const char *ccode;
 593         const struct iwinfo_iso3166_label *l;
 594         void *c, *d;
 595
 596         rv = rpc_iwinfo_open(msg);
 597
 598         if (rv)
 599                 return rv;
 600
 601         blob_buf_init(&buf, 0);
 602
 603         c = blobmsg_open_array(&buf, "results");
 604
 605         if (!iw->countrylist(ifname, res, &len) && (len > 0))
 606         {
 607                 if (iw->country(ifname, cur))
 608                         memset(cur, 0, sizeof(cur));
 609
 610                 for (l = IWINFO_ISO3166_NAMES; l->iso3166; l++)
 611                 {
 612                         ccode = rpc_iwinfo_lookup_country(res, len, l->iso3166);
 613
 614                         if (!ccode)
 615                                 continue;
 616
 617                         d = blobmsg_open_table(&buf, NULL);
 618
 619                         blobmsg_add_string(&buf, "code", ccode);
 620                         blobmsg_add_string(&buf, "country", (const char *)l->name);
 621
 622                         snprintf(iso3166, sizeof(iso3166), "%c%c",
 623                                  (l->iso3166 / 256), (l->iso3166 % 256));
 624
 625                         blobmsg_add_string(&buf, "iso3166", iso3166);
 626
 627                         if (cur[0])
 628                                 blobmsg_add_u8(&buf, "active", !strncmp(ccode, cur, 2));
 629
 630                         blobmsg_close_table(&buf, d);
 631                 }
 632         }
 633
 634         blobmsg_close_array(&buf, c);
 635
 636         ubus_send_reply(ctx, req, buf.head);
 637
 638         rpc_iwinfo_close();
 639
 640         return UBUS_STATUS_OK;
 641 }
 642
 643 static int
 644 rpc_iwinfo_phyname(struct ubus_context *ctx, struct ubus_object *obj,
 645                    struct ubus_request_data *req, const char *method,
 646                    struct blob_attr *msg)
 647 {
 648         int i;
 649         bool found = false;
 650         char res[IWINFO_BUFSIZE];
 651         const struct iwinfo_ops *ops;
 652         struct blob_attr *tb[__RPC_U_MAX];
 653         const char *backends[] = {
 654                 "nl80211",
 655                 "madwifi",
 656                 "wl"
 657         };
 658
 659         blobmsg_parse(rpc_uci_policy, __RPC_U_MAX, tb,
 660                       blob_data(msg), blob_len(msg));
 661
 662         if (!tb[RPC_U_SECTION])
 663                 return UBUS_STATUS_INVALID_ARGUMENT;
 664
 665         for (i = 0; i < ARRAY_SIZE(backends); i++)
 666         {
 667                 ops = iwinfo_backend_by_name(backends[i]);
 668
 669                 if (!ops || !ops->lookup_phy)
 670                         continue;
 671
 672                 if (!ops->lookup_phy(blobmsg_get_string(tb[RPC_U_SECTION]), res))
 673                 {
 674                         found = true;
 675                         break;
 676                 }
 677         }
 678
 679         if (found)
 680         {
 681                 blob_buf_init(&buf, 0);
 682                 blobmsg_add_string(&buf, "phyname", res);
 683
 684                 ubus_send_reply(ctx, req, buf.head);
 685         }
 686
 687         rpc_iwinfo_close();
 688
 689         return found ? UBUS_STATUS_OK : UBUS_STATUS_NOT_FOUND;
 690 }
 691
 692 static int
 693 rpc_iwinfo_devices(struct ubus_context *ctx, struct ubus_object *obj,
 694                    struct ubus_request_data *req, const char *method,
 695                    struct blob_attr *msg)
 696 {
 697         void *c;
 698         struct dirent *e;
 699         DIR *d;
 700
 701         d = opendir("/sys/class/net");
 702
 703         if (!d)
 704                 return UBUS_STATUS_UNKNOWN_ERROR;
 705
 706         blob_buf_init(&buf, 0);
 707
 708         c = blobmsg_open_array(&buf, "devices");
 709
 710         while ((e = readdir(d)) != NULL)
 711         {
 712                 if (e->d_type != DT_LNK)
 713                         continue;
 714
 715                 if (iwinfo_type(e->d_name))
 716                         blobmsg_add_string(&buf, NULL, e->d_name);
 717         }
 718
 719         blobmsg_close_array(&buf, c);
 720
 721         closedir(d);
 722
 723         ubus_send_reply(ctx, req, buf.head);
 724
 725         rpc_iwinfo_close();
 726
 727         return UBUS_STATUS_OK;
 728 }
 729
 730
 731 static int
 732 rpc_iwinfo_api_init(const struct rpc_daemon_ops *o, struct ubus_context *ctx)
 733 {
 734         static const struct ubus_method iwinfo_methods[] = {
 735                 UBUS_METHOD_NOARG("devices", rpc_iwinfo_devices),
 736                 UBUS_METHOD("info",        rpc_iwinfo_info,        rpc_device_policy),
 737                 UBUS_METHOD("scan",        rpc_iwinfo_scan,        rpc_device_policy),
 738                 UBUS_METHOD("assoclist",   rpc_iwinfo_assoclist,   rpc_assoclist_policy),
 739                 UBUS_METHOD("freqlist",    rpc_iwinfo_freqlist,    rpc_device_policy),
 740                 UBUS_METHOD("txpowerlist", rpc_iwinfo_txpowerlist, rpc_device_policy),
 741                 UBUS_METHOD("countrylist", rpc_iwinfo_countrylist, rpc_device_policy),
 742                 UBUS_METHOD("phyname",     rpc_iwinfo_phyname,     rpc_uci_policy),
 743         };
 744
 745         static struct ubus_object_type iwinfo_type =
 746                 UBUS_OBJECT_TYPE("luci-rpc-iwinfo", iwinfo_methods);
 747
 748         static struct ubus_object obj = {
 749                 .name = "iwinfo",
 750                 .type = &iwinfo_type,
 751                 .methods = iwinfo_methods,
 752                 .n_methods = ARRAY_SIZE(iwinfo_methods),
 753         };
 754
 755         return ubus_add_object(ctx, &obj);
 756 }
 757
 758 struct rpc_plugin rpc_plugin = {
 759         .init = rpc_iwinfo_api_init
 760 };