wpa_supplicant/interworking.c

   1 /*
   2  * Interworking (IEEE 802.11u)
   3  * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "common/ieee802_11_defs.h"
  13 #include "common/gas.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "utils/pcsc_funcs.h"
  16 #include "drivers/driver.h"
  17 #include "eap_common/eap_defs.h"
  18 #include "eap_peer/eap_methods.h"
  19 #include "wpa_supplicant_i.h"
  20 #include "config.h"
  21 #include "config_ssid.h"
  22 #include "bss.h"
  23 #include "scan.h"
  24 #include "notify.h"
  25 #include "gas_query.h"
  26 #include "hs20_supplicant.h"
  27 #include "interworking.h"
  28
  29
  30 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
  31 #define INTERWORKING_3GPP
  32 #else
  33 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
  34 #define INTERWORKING_3GPP
  35 #else
  36 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
  37 #define INTERWORKING_3GPP
  38 #endif
  39 #endif
  40 #endif
  41
  42 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
  43
  44
  45 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
  46 {
  47         if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
  48                 wpa_supplicant_cancel_sched_scan(wpa_s);
  49                 wpa_supplicant_deauthenticate(wpa_s,
  50                                               WLAN_REASON_DEAUTH_LEAVING);
  51         }
  52         wpa_s->disconnected = 0;
  53         wpa_s->reassociate = 1;
  54         wpa_supplicant_req_scan(wpa_s, 0, 0);
  55 }
  56
  57
  58 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
  59                                       struct wpabuf *extra)
  60 {
  61         struct wpabuf *buf;
  62         size_t i;
  63         u8 *len_pos;
  64
  65         buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
  66                                          (extra ? wpabuf_len(extra) : 0));
  67         if (buf == NULL)
  68                 return NULL;
  69
  70         len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
  71         for (i = 0; i < num_ids; i++)
  72                 wpabuf_put_le16(buf, info_ids[i]);
  73         gas_anqp_set_element_len(buf, len_pos);
  74         if (extra)
  75                 wpabuf_put_buf(buf, extra);
  76
  77         gas_anqp_set_len(buf);
  78
  79         return buf;
  80 }
  81
  82
  83 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
  84                                       u8 dialog_token,
  85                                       enum gas_query_result result,
  86                                       const struct wpabuf *adv_proto,
  87                                       const struct wpabuf *resp,
  88                                       u16 status_code)
  89 {
  90         struct wpa_supplicant *wpa_s = ctx;
  91
  92         anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
  93                      status_code);
  94         interworking_next_anqp_fetch(wpa_s);
  95 }
  96
  97
  98 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
  99                                       struct wpa_bss *bss)
 100 {
 101         struct wpabuf *buf;
 102         int ret = 0;
 103         int res;
 104         u16 info_ids[] = {
 105                 ANQP_CAPABILITY_LIST,
 106                 ANQP_VENUE_NAME,
 107                 ANQP_NETWORK_AUTH_TYPE,
 108                 ANQP_ROAMING_CONSORTIUM,
 109                 ANQP_IP_ADDR_TYPE_AVAILABILITY,
 110                 ANQP_NAI_REALM,
 111                 ANQP_3GPP_CELLULAR_NETWORK,
 112                 ANQP_DOMAIN_NAME
 113         };
 114         struct wpabuf *extra = NULL;
 115
 116         wpa_printf(MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
 117                    MAC2STR(bss->bssid));
 118
 119 #ifdef CONFIG_HS20
 120         if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
 121                 u8 *len_pos;
 122
 123                 extra = wpabuf_alloc(100);
 124                 if (!extra)
 125                         return -1;
 126
 127                 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
 128                 wpabuf_put_be24(extra, OUI_WFA);
 129                 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
 130                 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
 131                 wpabuf_put_u8(extra, 0); /* Reserved */
 132                 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
 133                 wpabuf_put_u8(extra, HS20_STYPE_OPERATOR_FRIENDLY_NAME);
 134                 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
 135                 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
 136                 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
 137                 gas_anqp_set_element_len(extra, len_pos);
 138         }
 139 #endif /* CONFIG_HS20 */
 140
 141         buf = anqp_build_req(info_ids, sizeof(info_ids) / sizeof(info_ids[0]),
 142                              extra);
 143         wpabuf_free(extra);
 144         if (buf == NULL)
 145                 return -1;
 146
 147         res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, buf,
 148                             interworking_anqp_resp_cb, wpa_s);
 149         if (res < 0) {
 150                 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
 151                 ret = -1;
 152         } else
 153                 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
 154                            "%u", res);
 155
 156         wpabuf_free(buf);
 157         return ret;
 158 }
 159
 160
 161 struct nai_realm_eap {
 162         u8 method;
 163         u8 inner_method;
 164         enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
 165         u8 cred_type;
 166         u8 tunneled_cred_type;
 167 };
 168
 169 struct nai_realm {
 170         u8 encoding;
 171         char *realm;
 172         u8 eap_count;
 173         struct nai_realm_eap *eap;
 174 };
 175
 176
 177 static void nai_realm_free(struct nai_realm *realms, u16 count)
 178 {
 179         u16 i;
 180
 181         if (realms == NULL)
 182                 return;
 183         for (i = 0; i < count; i++) {
 184                 os_free(realms[i].eap);
 185                 os_free(realms[i].realm);
 186         }
 187         os_free(realms);
 188 }
 189
 190
 191 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
 192                                       const u8 *end)
 193 {
 194         u8 elen, auth_count, a;
 195         const u8 *e_end;
 196
 197         if (pos + 3 > end) {
 198                 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
 199                 return NULL;
 200         }
 201
 202         elen = *pos++;
 203         if (pos + elen > end || elen < 2) {
 204                 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
 205                 return NULL;
 206         }
 207         e_end = pos + elen;
 208         e->method = *pos++;
 209         auth_count = *pos++;
 210         wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
 211                    elen, e->method, auth_count);
 212
 213         for (a = 0; a < auth_count; a++) {
 214                 u8 id, len;
 215
 216                 if (pos + 2 > end || pos + 2 + pos[1] > end) {
 217                         wpa_printf(MSG_DEBUG, "No room for Authentication "
 218                                    "Parameter subfield");
 219                         return NULL;
 220                 }
 221
 222                 id = *pos++;
 223                 len = *pos++;
 224
 225                 switch (id) {
 226                 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
 227                         if (len < 1)
 228                                 break;
 229                         e->inner_non_eap = *pos;
 230                         if (e->method != EAP_TYPE_TTLS)
 231                                 break;
 232                         switch (*pos) {
 233                         case NAI_REALM_INNER_NON_EAP_PAP:
 234                                 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
 235                                 break;
 236                         case NAI_REALM_INNER_NON_EAP_CHAP:
 237                                 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
 238                                 break;
 239                         case NAI_REALM_INNER_NON_EAP_MSCHAP:
 240                                 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
 241                                 break;
 242                         case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
 243                                 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
 244                                 break;
 245                         }
 246                         break;
 247                 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
 248                         if (len < 1)
 249                                 break;
 250                         e->inner_method = *pos;
 251                         wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
 252                                    e->inner_method);
 253                         break;
 254                 case NAI_REALM_EAP_AUTH_CRED_TYPE:
 255                         if (len < 1)
 256                                 break;
 257                         e->cred_type = *pos;
 258                         wpa_printf(MSG_DEBUG, "Credential Type: %u",
 259                                    e->cred_type);
 260                         break;
 261                 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
 262                         if (len < 1)
 263                                 break;
 264                         e->tunneled_cred_type = *pos;
 265                         wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
 266                                    "Type: %u", e->tunneled_cred_type);
 267                         break;
 268                 default:
 269                         wpa_printf(MSG_DEBUG, "Unsupported Authentication "
 270                                    "Parameter: id=%u len=%u", id, len);
 271                         wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
 272                                     "Value", pos, len);
 273                         break;
 274                 }
 275
 276                 pos += len;
 277         }
 278
 279         return e_end;
 280 }
 281
 282
 283 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
 284                                         const u8 *end)
 285 {
 286         u16 len;
 287         const u8 *f_end;
 288         u8 realm_len, e;
 289
 290         if (end - pos < 4) {
 291                 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
 292                            "fixed fields");
 293                 return NULL;
 294         }
 295
 296         len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
 297         pos += 2;
 298         if (pos + len > end || len < 3) {
 299                 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
 300                            "(len=%u; left=%u)",
 301                            len, (unsigned int) (end - pos));
 302                 return NULL;
 303         }
 304         f_end = pos + len;
 305
 306         r->encoding = *pos++;
 307         realm_len = *pos++;
 308         if (pos + realm_len > f_end) {
 309                 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
 310                            "(len=%u; left=%u)",
 311                            realm_len, (unsigned int) (f_end - pos));
 312                 return NULL;
 313         }
 314         wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
 315         r->realm = os_malloc(realm_len + 1);
 316         if (r->realm == NULL)
 317                 return NULL;
 318         os_memcpy(r->realm, pos, realm_len);
 319         r->realm[realm_len] = '\0';
 320         pos += realm_len;
 321
 322         if (pos + 1 > f_end) {
 323                 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
 324                 return NULL;
 325         }
 326         r->eap_count = *pos++;
 327         wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
 328         if (pos + r->eap_count * 3 > f_end) {
 329                 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
 330                 return NULL;
 331         }
 332         r->eap = os_zalloc(r->eap_count * sizeof(struct nai_realm_eap));
 333         if (r->eap == NULL)
 334                 return NULL;
 335
 336         for (e = 0; e < r->eap_count; e++) {
 337                 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
 338                 if (pos == NULL)
 339                         return NULL;
 340         }
 341
 342         return f_end;
 343 }
 344
 345
 346 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
 347 {
 348         struct nai_realm *realm;
 349         const u8 *pos, *end;
 350         u16 i, num;
 351
 352         if (anqp == NULL || wpabuf_len(anqp) < 2)
 353                 return NULL;
 354
 355         pos = wpabuf_head_u8(anqp);
 356         end = pos + wpabuf_len(anqp);
 357         num = WPA_GET_LE16(pos);
 358         wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
 359         pos += 2;
 360
 361         if (num * 5 > end - pos) {
 362                 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
 363                            "enough data (%u octets) for that many realms",
 364                            num, (unsigned int) (end - pos));
 365                 return NULL;
 366         }
 367
 368         realm = os_zalloc(num * sizeof(struct nai_realm));
 369         if (realm == NULL)
 370                 return NULL;
 371
 372         for (i = 0; i < num; i++) {
 373                 pos = nai_realm_parse_realm(&realm[i], pos, end);
 374                 if (pos == NULL) {
 375                         nai_realm_free(realm, num);
 376                         return NULL;
 377                 }
 378         }
 379
 380         *count = num;
 381         return realm;
 382 }
 383
 384
 385 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
 386 {
 387         char *tmp, *pos, *end;
 388         int match = 0;
 389
 390         if (realm->realm == NULL || home_realm == NULL)
 391                 return 0;
 392
 393         if (os_strchr(realm->realm, ';') == NULL)
 394                 return os_strcasecmp(realm->realm, home_realm) == 0;
 395
 396         tmp = os_strdup(realm->realm);
 397         if (tmp == NULL)
 398                 return 0;
 399
 400         pos = tmp;
 401         while (*pos) {
 402                 end = os_strchr(pos, ';');
 403                 if (end)
 404                         *end = '\0';
 405                 if (os_strcasecmp(pos, home_realm) == 0) {
 406                         match = 1;
 407                         break;
 408                 }
 409                 if (end == NULL)
 410                         break;
 411                 pos = end + 1;
 412         }
 413
 414         os_free(tmp);
 415
 416         return match;
 417 }
 418
 419
 420 static int nai_realm_cred_username(struct nai_realm_eap *eap)
 421 {
 422         if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
 423                 return 0; /* method not supported */
 424
 425         if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP) {
 426                 /* Only tunneled methods with username/password supported */
 427                 return 0;
 428         }
 429
 430         if (eap->method == EAP_TYPE_PEAP &&
 431             eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
 432                 return 0;
 433
 434         if (eap->method == EAP_TYPE_TTLS) {
 435                 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
 436                         return 0;
 437                 if (eap->inner_method &&
 438                     eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL)
 439                         return 0;
 440                 if (eap->inner_non_eap &&
 441                     eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
 442                     eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
 443                     eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
 444                     eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2)
 445                         return 0;
 446         }
 447
 448         if (eap->inner_method &&
 449             eap->inner_method != EAP_TYPE_GTC &&
 450             eap->inner_method != EAP_TYPE_MSCHAPV2)
 451                 return 0;
 452
 453         return 1;
 454 }
 455
 456
 457 static int nai_realm_cred_cert(struct nai_realm_eap *eap)
 458 {
 459         if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL)
 460                 return 0; /* method not supported */
 461
 462         if (eap->method != EAP_TYPE_TLS) {
 463                 /* Only EAP-TLS supported for credential authentication */
 464                 return 0;
 465         }
 466
 467         return 1;
 468 }
 469
 470
 471 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_cred *cred,
 472                                                  struct nai_realm *realm)
 473 {
 474         u8 e;
 475
 476         if (cred == NULL ||
 477             cred->username == NULL ||
 478             cred->username[0] == '\0' ||
 479             ((cred->password == NULL ||
 480               cred->password[0] == '\0') &&
 481              (cred->private_key == NULL ||
 482               cred->private_key[0] == '\0')))
 483                 return NULL;
 484
 485         for (e = 0; e < realm->eap_count; e++) {
 486                 struct nai_realm_eap *eap = &realm->eap[e];
 487                 if (cred->password && cred->password[0] &&
 488                     nai_realm_cred_username(eap))
 489                         return eap;
 490                 if (cred->private_key && cred->private_key[0] &&
 491                     nai_realm_cred_cert(eap))
 492                         return eap;
 493         }
 494
 495         return NULL;
 496 }
 497
 498
 499 #ifdef INTERWORKING_3GPP
 500
 501 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
 502 {
 503         u8 plmn[3];
 504         const u8 *pos, *end;
 505         u8 udhl;
 506
 507         /* See Annex A of 3GPP TS 24.234 v8.1.0 for description */
 508         plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
 509         plmn[1] = imsi[2] - '0';
 510         /* default to MNC length 3 if unknown */
 511         if (mnc_len != 2)
 512                 plmn[1] |= (imsi[5] - '0') << 4;
 513         else
 514                 plmn[1] |= 0xf0;
 515         plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
 516
 517         if (anqp == NULL)
 518                 return 0;
 519         pos = wpabuf_head_u8(anqp);
 520         end = pos + wpabuf_len(anqp);
 521         if (pos + 2 > end)
 522                 return 0;
 523         if (*pos != 0) {
 524                 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
 525                 return 0;
 526         }
 527         pos++;
 528         udhl = *pos++;
 529         if (pos + udhl > end) {
 530                 wpa_printf(MSG_DEBUG, "Invalid UDHL");
 531                 return 0;
 532         }
 533         end = pos + udhl;
 534
 535         while (pos + 2 <= end) {
 536                 u8 iei, len;
 537                 const u8 *l_end;
 538                 iei = *pos++;
 539                 len = *pos++ & 0x7f;
 540                 if (pos + len > end)
 541                         break;
 542                 l_end = pos + len;
 543
 544                 if (iei == 0 && len > 0) {
 545                         /* PLMN List */
 546                         u8 num, i;
 547                         num = *pos++;
 548                         for (i = 0; i < num; i++) {
 549                                 if (pos + 3 > end)
 550                                         break;
 551                                 if (os_memcmp(pos, plmn, 3) == 0)
 552                                         return 1; /* Found matching PLMN */
 553                         }
 554                 }
 555
 556                 pos = l_end;
 557         }
 558
 559         return 0;
 560 }
 561
 562
 563 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
 564                           char prefix)
 565 {
 566         const char *sep, *msin;
 567         char *end, *pos;
 568         size_t msin_len, plmn_len;
 569
 570         /*
 571          * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
 572          * Root NAI:
 573          * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
 574          * <MNC> is zero-padded to three digits in case two-digit MNC is used
 575          */
 576
 577         if (imsi == NULL || os_strlen(imsi) > 16) {
 578                 wpa_printf(MSG_DEBUG, "No valid IMSI available");
 579                 return -1;
 580         }
 581         sep = os_strchr(imsi, '-');
 582         if (sep == NULL)
 583                 return -1;
 584         plmn_len = sep - imsi;
 585         if (plmn_len != 5 && plmn_len != 6)
 586                 return -1;
 587         msin = sep + 1;
 588         msin_len = os_strlen(msin);
 589
 590         pos = nai;
 591         end = nai + nai_len;
 592         if (prefix)
 593                 *pos++ = prefix;
 594         os_memcpy(pos, imsi, plmn_len);
 595         pos += plmn_len;
 596         os_memcpy(pos, msin, msin_len);
 597         pos += msin_len;
 598         pos += os_snprintf(pos, end - pos, "@wlan.mnc");
 599         if (plmn_len == 5) {
 600                 *pos++ = '0';
 601                 *pos++ = imsi[3];
 602                 *pos++ = imsi[4];
 603         } else {
 604                 *pos++ = imsi[3];
 605                 *pos++ = imsi[4];
 606                 *pos++ = imsi[5];
 607         }
 608         pos += os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
 609                            imsi[0], imsi[1], imsi[2]);
 610
 611         return 0;
 612 }
 613
 614
 615 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
 616 {
 617         char nai[100];
 618         if (build_root_nai(nai, sizeof(nai), imsi, prefix) < 0)
 619                 return -1;
 620         return wpa_config_set_quoted(ssid, "identity", nai);
 621 }
 622
 623 #endif /* INTERWORKING_3GPP */
 624
 625
 626 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
 627                                      struct wpa_bss *bss)
 628 {
 629 #ifdef INTERWORKING_3GPP
 630         struct wpa_cred *cred;
 631         struct wpa_ssid *ssid;
 632         const u8 *ie;
 633
 634         if (bss->anqp_3gpp == NULL)
 635                 return -1;
 636
 637         for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
 638                 char *sep;
 639                 const char *imsi;
 640                 int mnc_len;
 641
 642 #ifdef PCSC_FUNCS
 643                 if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
 644                     wpa_s->imsi[0]) {
 645                         imsi = wpa_s->imsi;
 646                         mnc_len = wpa_s->mnc_len;
 647                         goto compare;
 648                 }
 649 #endif /* PCSC_FUNCS */
 650
 651                 if (cred->imsi == NULL || !cred->imsi[0] ||
 652                     cred->milenage == NULL || !cred->milenage[0])
 653                         continue;
 654
 655                 sep = os_strchr(cred->imsi, '-');
 656                 if (sep == NULL ||
 657                     (sep - cred->imsi != 5 && sep - cred->imsi != 6))
 658                         continue;
 659                 mnc_len = sep - cred->imsi - 3;
 660                 imsi = cred->imsi;
 661
 662 #ifdef PCSC_FUNCS
 663         compare:
 664 #endif /* PCSC_FUNCS */
 665                 if (plmn_id_match(bss->anqp_3gpp, imsi, mnc_len))
 666                         break;
 667         }
 668         if (cred == NULL)
 669                 return -1;
 670
 671         ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 672         if (ie == NULL)
 673                 return -1;
 674         wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR " (3GPP)",
 675                    MAC2STR(bss->bssid));
 676
 677         ssid = wpa_config_add_network(wpa_s->conf);
 678         if (ssid == NULL)
 679                 return -1;
 680
 681         wpas_notify_network_added(wpa_s, ssid);
 682         wpa_config_set_network_defaults(ssid);
 683         ssid->priority = cred->priority;
 684         ssid->temporary = 1;
 685         ssid->ssid = os_zalloc(ie[1] + 1);
 686         if (ssid->ssid == NULL)
 687                 goto fail;
 688         os_memcpy(ssid->ssid, ie + 2, ie[1]);
 689         ssid->ssid_len = ie[1];
 690
 691         /* TODO: figure out whether to use EAP-SIM, EAP-AKA, or EAP-AKA' */
 692         if (wpa_config_set(ssid, "eap", "SIM", 0) < 0) {
 693                 wpa_printf(MSG_DEBUG, "EAP-SIM not supported");
 694                 goto fail;
 695         }
 696         if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
 697                 wpa_config_set(ssid, "eap", "AKA", 0);
 698         if (!cred->pcsc && set_root_nai(ssid, cred->imsi, '1') < 0) {
 699                 wpa_printf(MSG_DEBUG, "Failed to set Root NAI");
 700                 goto fail;
 701         }
 702
 703         if (cred->milenage && cred->milenage[0]) {
 704                 if (wpa_config_set_quoted(ssid, "password",
 705                                           cred->milenage) < 0)
 706                         goto fail;
 707         } else if (cred->pcsc) {
 708                 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
 709                         goto fail;
 710                 if (wpa_s->conf->pcsc_pin &&
 711                     wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
 712                     < 0)
 713                         goto fail;
 714         }
 715
 716         if (cred->password && cred->password[0] &&
 717             wpa_config_set_quoted(ssid, "password", cred->password) < 0)
 718                 goto fail;
 719
 720         wpa_config_update_prio_list(wpa_s->conf);
 721         interworking_reconnect(wpa_s);
 722
 723         return 0;
 724
 725 fail:
 726         wpas_notify_network_removed(wpa_s, ssid);
 727         wpa_config_remove_network(wpa_s->conf, ssid->id);
 728 #endif /* INTERWORKING_3GPP */
 729         return -1;
 730 }
 731
 732
 733 static int interworking_set_eap_params(struct wpa_ssid *ssid,
 734                                        struct wpa_cred *cred, int ttls)
 735 {
 736         if (ttls && cred->username && cred->username[0]) {
 737                 const char *pos;
 738                 char *anon;
 739                 /* Use anonymous NAI in Phase 1 */
 740                 pos = os_strchr(cred->username, '@');
 741                 if (pos) {
 742                         size_t buflen = 9 + os_strlen(pos) + 1;
 743                         anon = os_malloc(buflen);
 744                         if (anon == NULL)
 745                                 return -1;
 746                         os_snprintf(anon, buflen, "anonymous%s", pos);
 747                 } else if (cred->realm) {
 748                         size_t buflen = 10 + os_strlen(cred->realm) + 1;
 749                         anon = os_malloc(buflen);
 750                         if (anon == NULL)
 751                                 return -1;
 752                         os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
 753                 } else {
 754                         anon = os_strdup("anonymous");
 755                         if (anon == NULL)
 756                                 return -1;
 757                 }
 758                 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
 759                     0) {
 760                         os_free(anon);
 761                         return -1;
 762                 }
 763                 os_free(anon);
 764         }
 765
 766         if (cred->username && cred->username[0] &&
 767             wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
 768                 return -1;
 769
 770         if (cred->password && cred->password[0] &&
 771             wpa_config_set_quoted(ssid, "password", cred->password) < 0)
 772                 return -1;
 773
 774         if (cred->client_cert && cred->client_cert[0] &&
 775             wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
 776                 return -1;
 777
 778         if (cred->private_key && cred->private_key[0] &&
 779             wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
 780                 return -1;
 781
 782         if (cred->private_key_passwd && cred->private_key_passwd[0] &&
 783             wpa_config_set_quoted(ssid, "private_key_passwd",
 784                                   cred->private_key_passwd) < 0)
 785                 return -1;
 786
 787         if (cred->ca_cert && cred->ca_cert[0] &&
 788             wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
 789                 return -1;
 790
 791         return 0;
 792 }
 793
 794
 795 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 796 {
 797         struct wpa_cred *cred;
 798         struct wpa_ssid *ssid;
 799         struct nai_realm *realm;
 800         struct nai_realm_eap *eap = NULL;
 801         u16 count, i;
 802         char buf[100];
 803         const u8 *ie;
 804
 805         if (wpa_s->conf->cred == NULL || bss == NULL)
 806                 return -1;
 807         ie = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 808         if (ie == NULL || ie[1] == 0) {
 809                 wpa_printf(MSG_DEBUG, "Interworking: No SSID known for "
 810                            MACSTR, MAC2STR(bss->bssid));
 811                 return -1;
 812         }
 813
 814         realm = nai_realm_parse(bss->anqp_nai_realm, &count);
 815         if (realm == NULL) {
 816                 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
 817                            "Realm list from " MACSTR, MAC2STR(bss->bssid));
 818                 count = 0;
 819         }
 820
 821         for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
 822                 for (i = 0; i < count; i++) {
 823                         if (!nai_realm_match(&realm[i], cred->realm))
 824                                 continue;
 825                         eap = nai_realm_find_eap(cred, &realm[i]);
 826                         if (eap)
 827                                 break;
 828                 }
 829                 if (eap)
 830                         break;
 831         }
 832
 833         if (!eap) {
 834                 if (interworking_connect_3gpp(wpa_s, bss) == 0) {
 835                         if (realm)
 836                                 nai_realm_free(realm, count);
 837                         return 0;
 838                 }
 839
 840                 wpa_printf(MSG_DEBUG, "Interworking: No matching credentials "
 841                            "and EAP method found for " MACSTR,
 842                            MAC2STR(bss->bssid));
 843                 nai_realm_free(realm, count);
 844                 return -1;
 845         }
 846
 847         wpa_printf(MSG_DEBUG, "Interworking: Connect with " MACSTR,
 848                    MAC2STR(bss->bssid));
 849
 850         ssid = wpa_config_add_network(wpa_s->conf);
 851         if (ssid == NULL) {
 852                 nai_realm_free(realm, count);
 853                 return -1;
 854         }
 855         wpas_notify_network_added(wpa_s, ssid);
 856         wpa_config_set_network_defaults(ssid);
 857         ssid->priority = cred->priority;
 858         ssid->temporary = 1;
 859         ssid->ssid = os_zalloc(ie[1] + 1);
 860         if (ssid->ssid == NULL)
 861                 goto fail;
 862         os_memcpy(ssid->ssid, ie + 2, ie[1]);
 863         ssid->ssid_len = ie[1];
 864
 865         if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
 866                                                      eap->method), 0) < 0)
 867                 goto fail;
 868
 869         switch (eap->method) {
 870         case EAP_TYPE_TTLS:
 871                 if (eap->inner_method) {
 872                         os_snprintf(buf, sizeof(buf), "\"autheap=%s\"",
 873                                     eap_get_name(EAP_VENDOR_IETF,
 874                                                  eap->inner_method));
 875                         if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
 876                                 goto fail;
 877                         break;
 878                 }
 879                 switch (eap->inner_non_eap) {
 880                 case NAI_REALM_INNER_NON_EAP_PAP:
 881                         if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
 882                             0)
 883                                 goto fail;
 884                         break;
 885                 case NAI_REALM_INNER_NON_EAP_CHAP:
 886                         if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
 887                             < 0)
 888                                 goto fail;
 889                         break;
 890                 case NAI_REALM_INNER_NON_EAP_MSCHAP:
 891                         if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
 892                                            0) < 0)
 893                                 goto fail;
 894                         break;
 895                 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
 896                         if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
 897                                            0) < 0)
 898                                 goto fail;
 899                         break;
 900                 }
 901                 break;
 902         case EAP_TYPE_PEAP:
 903                 os_snprintf(buf, sizeof(buf), "\"auth=%s\"",
 904                             eap_get_name(EAP_VENDOR_IETF, eap->inner_method));
 905                 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
 906                         goto fail;
 907                 break;
 908         case EAP_TYPE_TLS:
 909                 break;
 910         }
 911
 912         if (interworking_set_eap_params(ssid, cred,
 913                                         eap->method == EAP_TYPE_TTLS) < 0)
 914                 goto fail;
 915
 916         nai_realm_free(realm, count);
 917
 918         wpa_config_update_prio_list(wpa_s->conf);
 919         interworking_reconnect(wpa_s);
 920
 921         return 0;
 922
 923 fail:
 924         wpas_notify_network_removed(wpa_s, ssid);
 925         wpa_config_remove_network(wpa_s->conf, ssid->id);
 926         nai_realm_free(realm, count);
 927         return -1;
 928 }
 929
 930
 931 static struct wpa_cred * interworking_credentials_available_3gpp(
 932         struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 933 {
 934         struct wpa_cred *cred, *selected = NULL;
 935         int ret;
 936
 937 #ifdef INTERWORKING_3GPP
 938         if (bss->anqp_3gpp == NULL)
 939                 return NULL;
 940
 941         for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
 942                 char *sep;
 943                 const char *imsi;
 944                 int mnc_len;
 945
 946 #ifdef PCSC_FUNCS
 947                 if (cred->pcsc && wpa_s->conf->pcsc_reader && wpa_s->scard &&
 948                     wpa_s->imsi[0]) {
 949                         imsi = wpa_s->imsi;
 950                         mnc_len = wpa_s->mnc_len;
 951                         goto compare;
 952                 }
 953 #endif /* PCSC_FUNCS */
 954
 955                 if (cred->imsi == NULL || !cred->imsi[0] ||
 956                     cred->milenage == NULL || !cred->milenage[0])
 957                         continue;
 958
 959                 sep = os_strchr(cred->imsi, '-');
 960                 if (sep == NULL ||
 961                     (sep - cred->imsi != 5 && sep - cred->imsi != 6))
 962                         continue;
 963                 mnc_len = sep - cred->imsi - 3;
 964                 imsi = cred->imsi;
 965
 966 #ifdef PCSC_FUNCS
 967         compare:
 968 #endif /* PCSC_FUNCS */
 969                 wpa_printf(MSG_DEBUG, "Interworking: Parsing 3GPP info from "
 970                            MACSTR, MAC2STR(bss->bssid));
 971                 ret = plmn_id_match(bss->anqp_3gpp, imsi, mnc_len);
 972                 wpa_printf(MSG_DEBUG, "PLMN match %sfound", ret ? "" : "not ");
 973                 if (ret) {
 974                         if (selected == NULL ||
 975                             selected->priority < cred->priority)
 976                                 selected = cred;
 977                 }
 978         }
 979 #endif /* INTERWORKING_3GPP */
 980         return selected;
 981 }
 982
 983
 984 static struct wpa_cred * interworking_credentials_available_realm(
 985         struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 986 {
 987         struct wpa_cred *cred, *selected = NULL;
 988         struct nai_realm *realm;
 989         u16 count, i;
 990
 991         if (bss->anqp_nai_realm == NULL)
 992                 return NULL;
 993
 994         if (wpa_s->conf->cred == NULL)
 995                 return NULL;
 996
 997         wpa_printf(MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
 998                    MACSTR, MAC2STR(bss->bssid));
 999         realm = nai_realm_parse(bss->anqp_nai_realm, &count);
1000         if (realm == NULL) {
1001                 wpa_printf(MSG_DEBUG, "Interworking: Could not parse NAI "
1002                            "Realm list from " MACSTR, MAC2STR(bss->bssid));
1003                 return NULL;
1004         }
1005
1006         for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1007                 if (cred->realm == NULL)
1008                         continue;
1009
1010                 for (i = 0; i < count; i++) {
1011                         if (!nai_realm_match(&realm[i], cred->realm))
1012                                 continue;
1013                         if (nai_realm_find_eap(cred, &realm[i])) {
1014                                 if (selected == NULL ||
1015                                     selected->priority < cred->priority)
1016                                         selected = cred;
1017                                 break;
1018                         }
1019                 }
1020         }
1021
1022         nai_realm_free(realm, count);
1023
1024         return selected;
1025 }
1026
1027
1028 static struct wpa_cred * interworking_credentials_available(
1029         struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
1030 {
1031         struct wpa_cred *cred, *cred2;
1032
1033         cred = interworking_credentials_available_realm(wpa_s, bss);
1034         cred2 = interworking_credentials_available_3gpp(wpa_s, bss);
1035         if (cred && cred2 && cred2->priority >= cred->priority)
1036                 cred = cred2;
1037         if (!cred)
1038                 cred = cred2;
1039
1040         return cred;
1041 }
1042
1043
1044 static int domain_name_list_contains(struct wpabuf *domain_names,
1045                                      const char *domain)
1046 {
1047         const u8 *pos, *end;
1048         size_t len;
1049
1050         len = os_strlen(domain);
1051         pos = wpabuf_head(domain_names);
1052         end = pos + wpabuf_len(domain_names);
1053
1054         while (pos + 1 < end) {
1055                 if (pos + 1 + pos[0] > end)
1056                         break;
1057
1058                 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
1059                                   pos + 1, pos[0]);
1060                 if (pos[0] == len &&
1061                     os_strncasecmp(domain, (const char *) (pos + 1), len) == 0)
1062                         return 1;
1063
1064                 pos += 1 + pos[0];
1065         }
1066
1067         return 0;
1068 }
1069
1070
1071 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
1072                                 struct wpabuf *domain_names)
1073 {
1074         struct wpa_cred *cred;
1075 #ifdef INTERWORKING_3GPP
1076         char nai[100], *realm;
1077 #endif /* INTERWORKING_3GPP */
1078
1079         if (domain_names == NULL || wpa_s->conf->cred == NULL)
1080                 return -1;
1081
1082         for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1083 #ifdef INTERWORKING_3GPP
1084                 if (cred->imsi &&
1085                     build_root_nai(nai, sizeof(nai), cred->imsi, 0) == 0) {
1086                         realm = os_strchr(nai, '@');
1087                         if (realm)
1088                                 realm++;
1089                         wpa_printf(MSG_DEBUG, "Interworking: Search for match "
1090                                    "with SIM/USIM domain %s", realm);
1091                         if (realm &&
1092                             domain_name_list_contains(domain_names, realm))
1093                                 return 1;
1094                 }
1095 #endif /* INTERWORKING_3GPP */
1096
1097                 if (cred->domain == NULL)
1098                         continue;
1099
1100                 wpa_printf(MSG_DEBUG, "Interworking: Search for match with "
1101                            "home SP FQDN %s", cred->domain);
1102                 if (domain_name_list_contains(domain_names, cred->domain))
1103                         return 1;
1104         }
1105
1106         return 0;
1107 }
1108
1109
1110 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
1111 {
1112         struct wpa_bss *bss;
1113         struct wpa_ssid *ssid;
1114
1115         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1116                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1117                         if (wpas_network_disabled(wpa_s, ssid) ||
1118                             ssid->mode != WPAS_MODE_INFRA)
1119                                 continue;
1120                         if (ssid->ssid_len != bss->ssid_len ||
1121                             os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
1122                             0)
1123                                 continue;
1124                         /*
1125                          * TODO: Consider more accurate matching of security
1126                          * configuration similarly to what is done in events.c
1127                          */
1128                         return 1;
1129                 }
1130         }
1131
1132         return 0;
1133 }
1134
1135
1136 static void interworking_select_network(struct wpa_supplicant *wpa_s)
1137 {
1138         struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
1139         int selected_prio = -999999, selected_home_prio = -999999;
1140         unsigned int count = 0;
1141         const char *type;
1142         int res;
1143         struct wpa_cred *cred;
1144
1145         wpa_s->network_select = 0;
1146
1147         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1148                 cred = interworking_credentials_available(wpa_s, bss);
1149                 if (!cred)
1150                         continue;
1151                 count++;
1152                 res = interworking_home_sp(wpa_s, bss->anqp_domain_name);
1153                 if (res > 0)
1154                         type = "home";
1155                 else if (res == 0)
1156                         type = "roaming";
1157                 else
1158                         type = "unknown";
1159                 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_AP MACSTR " type=%s",
1160                         MAC2STR(bss->bssid), type);
1161                 if (wpa_s->auto_select) {
1162                         if (selected == NULL ||
1163                             cred->priority > selected_prio) {
1164                                 selected = bss;
1165                                 selected_prio = cred->priority;
1166                         }
1167                         if (res > 0 &&
1168                             (selected_home == NULL ||
1169                              cred->priority > selected_home_prio)) {
1170                                 selected_home = bss;
1171                                 selected_home_prio = cred->priority;
1172                         }
1173                 }
1174         }
1175
1176         if (selected_home && selected_home != selected &&
1177             selected_home_prio >= selected_prio) {
1178                 /* Prefer network operated by the Home SP */
1179                 selected = selected_home;
1180         }
1181
1182         if (count == 0) {
1183                 /*
1184                  * No matching network was found based on configured
1185                  * credentials. Check whether any of the enabled network blocks
1186                  * have matching APs.
1187                  */
1188                 if (interworking_find_network_match(wpa_s)) {
1189                         wpa_printf(MSG_DEBUG, "Interworking: Possible BSS "
1190                                    "match for enabled network configurations");
1191                         interworking_reconnect(wpa_s);
1192                         return;
1193                 }
1194
1195                 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
1196                         "with matching credentials found");
1197         }
1198
1199         if (selected)
1200                 interworking_connect(wpa_s, selected);
1201 }
1202
1203
1204 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
1205 {
1206         struct wpa_bss *bss;
1207         int found = 0;
1208         const u8 *ie;
1209
1210         if (!wpa_s->fetch_anqp_in_progress)
1211                 return;
1212
1213         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1214                 if (!(bss->caps & IEEE80211_CAP_ESS))
1215                         continue;
1216                 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
1217                 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
1218                         continue; /* AP does not support Interworking */
1219
1220                 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
1221                         found++;
1222                         bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
1223                         wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
1224                                 MACSTR, MAC2STR(bss->bssid));
1225                         interworking_anqp_send_req(wpa_s, bss);
1226                         break;
1227                 }
1228         }
1229
1230         if (found == 0) {
1231                 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
1232                 wpa_s->fetch_anqp_in_progress = 0;
1233                 if (wpa_s->network_select)
1234                         interworking_select_network(wpa_s);
1235         }
1236 }
1237
1238
1239 static void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
1240 {
1241         struct wpa_bss *bss;
1242
1243         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
1244                 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
1245
1246         wpa_s->fetch_anqp_in_progress = 1;
1247         interworking_next_anqp_fetch(wpa_s);
1248 }
1249
1250
1251 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
1252 {
1253         if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
1254                 return 0;
1255
1256         wpa_s->network_select = 0;
1257
1258         interworking_start_fetch_anqp(wpa_s);
1259
1260         return 0;
1261 }
1262
1263
1264 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
1265 {
1266         if (!wpa_s->fetch_anqp_in_progress)
1267                 return;
1268
1269         wpa_s->fetch_anqp_in_progress = 0;
1270 }
1271
1272
1273 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
1274                   u16 info_ids[], size_t num_ids)
1275 {
1276         struct wpabuf *buf;
1277         int ret = 0;
1278         int freq;
1279         struct wpa_bss *bss;
1280         int res;
1281
1282         freq = wpa_s->assoc_freq;
1283         bss = wpa_bss_get_bssid(wpa_s, dst);
1284         if (bss)
1285                 freq = bss->freq;
1286         if (freq <= 0)
1287                 return -1;
1288
1289         wpa_printf(MSG_DEBUG, "ANQP: Query Request to " MACSTR " for %u id(s)",
1290                    MAC2STR(dst), (unsigned int) num_ids);
1291
1292         buf = anqp_build_req(info_ids, num_ids, NULL);
1293         if (buf == NULL)
1294                 return -1;
1295
1296         res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
1297         if (res < 0) {
1298                 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
1299                 ret = -1;
1300         } else
1301                 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
1302                            "%u", res);
1303
1304         wpabuf_free(buf);
1305         return ret;
1306 }
1307
1308
1309 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
1310                                             const u8 *sa, u16 info_id,
1311                                             const u8 *data, size_t slen)
1312 {
1313         const u8 *pos = data;
1314         struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa);
1315 #ifdef CONFIG_HS20
1316         u8 type;
1317 #endif /* CONFIG_HS20 */
1318
1319         switch (info_id) {
1320         case ANQP_CAPABILITY_LIST:
1321                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1322                         " ANQP Capability list", MAC2STR(sa));
1323                 break;
1324         case ANQP_VENUE_NAME:
1325                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1326                         " Venue Name", MAC2STR(sa));
1327                 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
1328                 if (bss) {
1329                         wpabuf_free(bss->anqp_venue_name);
1330                         bss->anqp_venue_name = wpabuf_alloc_copy(pos, slen);
1331                 }
1332                 break;
1333         case ANQP_NETWORK_AUTH_TYPE:
1334                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1335                         " Network Authentication Type information",
1336                         MAC2STR(sa));
1337                 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
1338                                   "Type", pos, slen);
1339                 if (bss) {
1340                         wpabuf_free(bss->anqp_network_auth_type);
1341                         bss->anqp_network_auth_type =
1342                                 wpabuf_alloc_copy(pos, slen);
1343                 }
1344                 break;
1345         case ANQP_ROAMING_CONSORTIUM:
1346                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1347                         " Roaming Consortium list", MAC2STR(sa));
1348                 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
1349                                   pos, slen);
1350                 if (bss) {
1351                         wpabuf_free(bss->anqp_roaming_consortium);
1352                         bss->anqp_roaming_consortium =
1353                                 wpabuf_alloc_copy(pos, slen);
1354                 }
1355                 break;
1356         case ANQP_IP_ADDR_TYPE_AVAILABILITY:
1357                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1358                         " IP Address Type Availability information",
1359                         MAC2STR(sa));
1360                 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
1361                             pos, slen);
1362                 if (bss) {
1363                         wpabuf_free(bss->anqp_ip_addr_type_availability);
1364                         bss->anqp_ip_addr_type_availability =
1365                                 wpabuf_alloc_copy(pos, slen);
1366                 }
1367                 break;
1368         case ANQP_NAI_REALM:
1369                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1370                         " NAI Realm list", MAC2STR(sa));
1371                 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
1372                 if (bss) {
1373                         wpabuf_free(bss->anqp_nai_realm);
1374                         bss->anqp_nai_realm = wpabuf_alloc_copy(pos, slen);
1375                 }
1376                 break;
1377         case ANQP_3GPP_CELLULAR_NETWORK:
1378                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1379                         " 3GPP Cellular Network information", MAC2STR(sa));
1380                 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
1381                                   pos, slen);
1382                 if (bss) {
1383                         wpabuf_free(bss->anqp_3gpp);
1384                         bss->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
1385                 }
1386                 break;
1387         case ANQP_DOMAIN_NAME:
1388                 wpa_msg(wpa_s, MSG_INFO, "RX-ANQP " MACSTR
1389                         " Domain Name list", MAC2STR(sa));
1390                 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
1391                 if (bss) {
1392                         wpabuf_free(bss->anqp_domain_name);
1393                         bss->anqp_domain_name = wpabuf_alloc_copy(pos, slen);
1394                 }
1395                 break;
1396         case ANQP_VENDOR_SPECIFIC:
1397                 if (slen < 3)
1398                         return;
1399
1400                 switch (WPA_GET_BE24(pos)) {
1401 #ifdef CONFIG_HS20
1402                 case OUI_WFA:
1403                         pos += 3;
1404                         slen -= 3;
1405
1406                         if (slen < 1)
1407                                 return;
1408                         type = *pos++;
1409                         slen--;
1410
1411                         switch (type) {
1412                         case HS20_ANQP_OUI_TYPE:
1413                                 hs20_parse_rx_hs20_anqp_resp(wpa_s, sa, pos,
1414                                                              slen);
1415                                 break;
1416                         default:
1417                                 wpa_printf(MSG_DEBUG, "HS20: Unsupported ANQP "
1418                                            "vendor type %u", type);
1419                                 break;
1420                         }
1421                         break;
1422 #endif /* CONFIG_HS20 */
1423                 default:
1424                         wpa_printf(MSG_DEBUG, "Interworking: Unsupported "
1425                                    "vendor-specific ANQP OUI %06x",
1426                                    WPA_GET_BE24(pos));
1427                         return;
1428                 }
1429                 break;
1430         default:
1431                 wpa_printf(MSG_DEBUG, "Interworking: Unsupported ANQP Info ID "
1432                            "%u", info_id);
1433                 break;
1434         }
1435 }
1436
1437
1438 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
1439                   enum gas_query_result result,
1440                   const struct wpabuf *adv_proto,
1441                   const struct wpabuf *resp, u16 status_code)
1442 {
1443         struct wpa_supplicant *wpa_s = ctx;
1444         const u8 *pos;
1445         const u8 *end;
1446         u16 info_id;
1447         u16 slen;
1448
1449         if (result != GAS_QUERY_SUCCESS)
1450                 return;
1451
1452         pos = wpabuf_head(adv_proto);
1453         if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
1454             pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
1455                 wpa_printf(MSG_DEBUG, "ANQP: Unexpected Advertisement "
1456                            "Protocol in response");
1457                 return;
1458         }
1459
1460         pos = wpabuf_head(resp);
1461         end = pos + wpabuf_len(resp);
1462
1463         while (pos < end) {
1464                 if (pos + 4 > end) {
1465                         wpa_printf(MSG_DEBUG, "ANQP: Invalid element");
1466                         break;
1467                 }
1468                 info_id = WPA_GET_LE16(pos);
1469                 pos += 2;
1470                 slen = WPA_GET_LE16(pos);
1471                 pos += 2;
1472                 if (pos + slen > end) {
1473                         wpa_printf(MSG_DEBUG, "ANQP: Invalid element length "
1474                                    "for Info ID %u", info_id);
1475                         break;
1476                 }
1477                 interworking_parse_rx_anqp_resp(wpa_s, dst, info_id, pos,
1478                                                 slen);
1479                 pos += slen;
1480         }
1481 }
1482
1483
1484 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
1485                                           struct wpa_scan_results *scan_res)
1486 {
1487         wpa_printf(MSG_DEBUG, "Interworking: Scan results available - start "
1488                    "ANQP fetch");
1489         interworking_start_fetch_anqp(wpa_s);
1490 }
1491
1492
1493 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select)
1494 {
1495         interworking_stop_fetch_anqp(wpa_s);
1496         wpa_s->network_select = 1;
1497         wpa_s->auto_select = !!auto_select;
1498         wpa_printf(MSG_DEBUG, "Interworking: Start scan for network "
1499                    "selection");
1500         wpa_s->scan_res_handler = interworking_scan_res_handler;
1501         wpa_s->scan_req = 2;
1502         wpa_supplicant_req_scan(wpa_s, 0, 0);
1503
1504         return 0;
1505 }