1 /* 2 * Interworking (IEEE 802.11u) 3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc. 4 * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi> 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10 #include "includes.h" 11 12 #include "common.h" 13 #include "common/ieee802_11_defs.h" 14 #include "common/gas.h" 15 #include "common/wpa_ctrl.h" 16 #include "utils/pcsc_funcs.h" 17 #include "utils/eloop.h" 18 #include "drivers/driver.h" 19 #include "eap_common/eap_defs.h" 20 #include "eap_peer/eap.h" 21 #include "eap_peer/eap_methods.h" 22 #include "eapol_supp/eapol_supp_sm.h" 23 #include "rsn_supp/wpa.h" 24 #include "wpa_supplicant_i.h" 25 #include "config.h" 26 #include "config_ssid.h" 27 #include "bss.h" 28 #include "scan.h" 29 #include "notify.h" 30 #include "driver_i.h" 31 #include "gas_query.h" 32 #include "hs20_supplicant.h" 33 #include "interworking.h" 34 35 36 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC) 37 #define INTERWORKING_3GPP 38 #else 39 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC) 40 #define INTERWORKING_3GPP 41 #else 42 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC) 43 #define INTERWORKING_3GPP 44 #endif 45 #endif 46 #endif 47 48 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s); 49 static struct wpa_cred * interworking_credentials_available_realm( 50 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 51 int *excluded); 52 static struct wpa_cred * interworking_credentials_available_3gpp( 53 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 54 int *excluded); 55 56 57 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b) 58 { 59 if (a->priority > b->priority) 60 return 1; 61 if (a->priority < b->priority) 62 return -1; 63 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL || 64 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0) 65 return 0; 66 if (a->sp_priority < b->sp_priority) 67 return 1; 68 if (a->sp_priority > b->sp_priority) 69 return -1; 70 return 0; 71 } 72 73 74 static void interworking_reconnect(struct wpa_supplicant *wpa_s) 75 { 76 unsigned int tried; 77 78 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 79 wpa_supplicant_cancel_sched_scan(wpa_s); 80 wpa_s->own_disconnect_req = 1; 81 wpa_supplicant_deauthenticate(wpa_s, 82 WLAN_REASON_DEAUTH_LEAVING); 83 } 84 wpa_s->disconnected = 0; 85 wpa_s->reassociate = 1; 86 tried = wpa_s->interworking_fast_assoc_tried; 87 wpa_s->interworking_fast_assoc_tried = 1; 88 89 if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0) 90 return; 91 92 wpa_s->interworking_fast_assoc_tried = 0; 93 wpa_supplicant_req_scan(wpa_s, 0, 0); 94 } 95 96 97 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids, 98 struct wpabuf *extra) 99 { 100 struct wpabuf *buf; 101 size_t i; 102 u8 *len_pos; 103 104 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 + 105 (extra ? wpabuf_len(extra) : 0)); 106 if (buf == NULL) 107 return NULL; 108 109 if (num_ids > 0) { 110 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST); 111 for (i = 0; i < num_ids; i++) 112 wpabuf_put_le16(buf, info_ids[i]); 113 gas_anqp_set_element_len(buf, len_pos); 114 } 115 if (extra) 116 wpabuf_put_buf(buf, extra); 117 118 gas_anqp_set_len(buf); 119 120 return buf; 121 } 122 123 124 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst, 125 u8 dialog_token, 126 enum gas_query_result result, 127 const struct wpabuf *adv_proto, 128 const struct wpabuf *resp, 129 u16 status_code) 130 { 131 struct wpa_supplicant *wpa_s = ctx; 132 133 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR 134 " dialog_token=%u result=%d status_code=%u", 135 MAC2STR(dst), dialog_token, result, status_code); 136 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp, 137 status_code); 138 interworking_next_anqp_fetch(wpa_s); 139 } 140 141 142 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s) 143 { 144 struct wpa_cred *cred; 145 146 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 147 if (cred->roaming_consortium_len) 148 return 1; 149 if (cred->required_roaming_consortium_len) 150 return 1; 151 if (cred->num_roaming_consortiums) 152 return 1; 153 } 154 return 0; 155 } 156 157 158 static int cred_with_3gpp(struct wpa_supplicant *wpa_s) 159 { 160 struct wpa_cred *cred; 161 162 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 163 if (cred->pcsc || cred->imsi) 164 return 1; 165 } 166 return 0; 167 } 168 169 170 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s) 171 { 172 struct wpa_cred *cred; 173 174 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 175 if (cred->pcsc || cred->imsi) 176 continue; 177 if (!cred->eap_method) 178 return 1; 179 if (cred->realm && cred->roaming_consortium_len == 0) 180 return 1; 181 } 182 return 0; 183 } 184 185 186 static int cred_with_domain(struct wpa_supplicant *wpa_s) 187 { 188 struct wpa_cred *cred; 189 190 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 191 if (cred->domain || cred->pcsc || cred->imsi || 192 cred->roaming_partner) 193 return 1; 194 } 195 return 0; 196 } 197 198 199 #ifdef CONFIG_HS20 200 201 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s) 202 { 203 struct wpa_cred *cred; 204 205 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 206 if (cred->min_dl_bandwidth_home || 207 cred->min_ul_bandwidth_home || 208 cred->min_dl_bandwidth_roaming || 209 cred->min_ul_bandwidth_roaming) 210 return 1; 211 } 212 return 0; 213 } 214 215 216 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s) 217 { 218 struct wpa_cred *cred; 219 220 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 221 if (cred->num_req_conn_capab) 222 return 1; 223 } 224 return 0; 225 } 226 227 #endif /* CONFIG_HS20 */ 228 229 230 static int additional_roaming_consortiums(struct wpa_bss *bss) 231 { 232 const u8 *ie; 233 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 234 if (ie == NULL || ie[1] == 0) 235 return 0; 236 return ie[2]; /* Number of ANQP OIs */ 237 } 238 239 240 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx) 241 { 242 struct wpa_supplicant *wpa_s = eloop_ctx; 243 interworking_next_anqp_fetch(wpa_s); 244 } 245 246 247 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s, 248 struct wpa_bss *bss) 249 { 250 struct wpabuf *buf; 251 int ret = 0; 252 int res; 253 u16 info_ids[8]; 254 size_t num_info_ids = 0; 255 struct wpabuf *extra = NULL; 256 int all = wpa_s->fetch_all_anqp; 257 258 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR, 259 MAC2STR(bss->bssid)); 260 wpa_s->interworking_gas_bss = bss; 261 262 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST; 263 if (all) { 264 info_ids[num_info_ids++] = ANQP_VENUE_NAME; 265 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE; 266 } 267 if (all || (cred_with_roaming_consortium(wpa_s) && 268 additional_roaming_consortiums(bss))) 269 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM; 270 if (all) 271 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY; 272 if (all || cred_with_nai_realm(wpa_s)) 273 info_ids[num_info_ids++] = ANQP_NAI_REALM; 274 if (all || cred_with_3gpp(wpa_s)) { 275 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK; 276 wpa_supplicant_scard_init(wpa_s, NULL); 277 } 278 if (all || cred_with_domain(wpa_s)) 279 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME; 280 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info", 281 (u8 *) info_ids, num_info_ids * 2); 282 283 #ifdef CONFIG_HS20 284 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) { 285 u8 *len_pos; 286 287 extra = wpabuf_alloc(100); 288 if (!extra) 289 return -1; 290 291 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC); 292 wpabuf_put_be24(extra, OUI_WFA); 293 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE); 294 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST); 295 wpabuf_put_u8(extra, 0); /* Reserved */ 296 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST); 297 if (all) 298 wpabuf_put_u8(extra, 299 HS20_STYPE_OPERATOR_FRIENDLY_NAME); 300 if (all || cred_with_min_backhaul(wpa_s)) 301 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS); 302 if (all || cred_with_conn_capab(wpa_s)) 303 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY); 304 if (all) 305 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS); 306 if (all) { 307 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST); 308 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_NAI_LIST); 309 } 310 gas_anqp_set_element_len(extra, len_pos); 311 } 312 #endif /* CONFIG_HS20 */ 313 314 buf = anqp_build_req(info_ids, num_info_ids, extra); 315 wpabuf_free(extra); 316 if (buf == NULL) 317 return -1; 318 319 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, 0, buf, 320 interworking_anqp_resp_cb, wpa_s); 321 if (res < 0) { 322 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request"); 323 wpabuf_free(buf); 324 ret = -1; 325 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, 326 NULL); 327 } else 328 wpa_msg(wpa_s, MSG_DEBUG, 329 "ANQP: Query started with dialog token %u", res); 330 331 return ret; 332 } 333 334 335 struct nai_realm_eap { 336 u8 method; 337 u8 inner_method; 338 enum nai_realm_eap_auth_inner_non_eap inner_non_eap; 339 u8 cred_type; 340 u8 tunneled_cred_type; 341 }; 342 343 struct nai_realm { 344 u8 encoding; 345 char *realm; 346 u8 eap_count; 347 struct nai_realm_eap *eap; 348 }; 349 350 351 static void nai_realm_free(struct nai_realm *realms, u16 count) 352 { 353 u16 i; 354 355 if (realms == NULL) 356 return; 357 for (i = 0; i < count; i++) { 358 os_free(realms[i].eap); 359 os_free(realms[i].realm); 360 } 361 os_free(realms); 362 } 363 364 365 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos, 366 const u8 *end) 367 { 368 u8 elen, auth_count, a; 369 const u8 *e_end; 370 371 if (end - pos < 3) { 372 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields"); 373 return NULL; 374 } 375 376 elen = *pos++; 377 if (elen > end - pos || elen < 2) { 378 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield"); 379 return NULL; 380 } 381 e_end = pos + elen; 382 e->method = *pos++; 383 auth_count = *pos++; 384 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u", 385 elen, e->method, auth_count); 386 387 for (a = 0; a < auth_count; a++) { 388 u8 id, len; 389 390 if (end - pos < 2) { 391 wpa_printf(MSG_DEBUG, 392 "No room for Authentication Parameter subfield header"); 393 return NULL; 394 } 395 396 id = *pos++; 397 len = *pos++; 398 if (len > end - pos) { 399 wpa_printf(MSG_DEBUG, 400 "No room for Authentication Parameter subfield"); 401 return NULL; 402 } 403 404 switch (id) { 405 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH: 406 if (len < 1) 407 break; 408 e->inner_non_eap = *pos; 409 if (e->method != EAP_TYPE_TTLS) 410 break; 411 switch (*pos) { 412 case NAI_REALM_INNER_NON_EAP_PAP: 413 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP"); 414 break; 415 case NAI_REALM_INNER_NON_EAP_CHAP: 416 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP"); 417 break; 418 case NAI_REALM_INNER_NON_EAP_MSCHAP: 419 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP"); 420 break; 421 case NAI_REALM_INNER_NON_EAP_MSCHAPV2: 422 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2"); 423 break; 424 } 425 break; 426 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD: 427 if (len < 1) 428 break; 429 e->inner_method = *pos; 430 wpa_printf(MSG_DEBUG, "Inner EAP method: %u", 431 e->inner_method); 432 break; 433 case NAI_REALM_EAP_AUTH_CRED_TYPE: 434 if (len < 1) 435 break; 436 e->cred_type = *pos; 437 wpa_printf(MSG_DEBUG, "Credential Type: %u", 438 e->cred_type); 439 break; 440 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE: 441 if (len < 1) 442 break; 443 e->tunneled_cred_type = *pos; 444 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential " 445 "Type: %u", e->tunneled_cred_type); 446 break; 447 default: 448 wpa_printf(MSG_DEBUG, "Unsupported Authentication " 449 "Parameter: id=%u len=%u", id, len); 450 wpa_hexdump(MSG_DEBUG, "Authentication Parameter " 451 "Value", pos, len); 452 break; 453 } 454 455 pos += len; 456 } 457 458 return e_end; 459 } 460 461 462 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos, 463 const u8 *end) 464 { 465 u16 len; 466 const u8 *f_end; 467 u8 realm_len, e; 468 469 if (end - pos < 4) { 470 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data " 471 "fixed fields"); 472 return NULL; 473 } 474 475 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */ 476 pos += 2; 477 if (len > end - pos || len < 3) { 478 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data " 479 "(len=%u; left=%u)", 480 len, (unsigned int) (end - pos)); 481 return NULL; 482 } 483 f_end = pos + len; 484 485 r->encoding = *pos++; 486 realm_len = *pos++; 487 if (realm_len > f_end - pos) { 488 wpa_printf(MSG_DEBUG, "No room for NAI Realm " 489 "(len=%u; left=%u)", 490 realm_len, (unsigned int) (f_end - pos)); 491 return NULL; 492 } 493 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len); 494 r->realm = dup_binstr(pos, realm_len); 495 if (r->realm == NULL) 496 return NULL; 497 pos += realm_len; 498 499 if (f_end - pos < 1) { 500 wpa_printf(MSG_DEBUG, "No room for EAP Method Count"); 501 return NULL; 502 } 503 r->eap_count = *pos++; 504 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count); 505 if (r->eap_count * 3 > f_end - pos) { 506 wpa_printf(MSG_DEBUG, "No room for EAP Methods"); 507 return NULL; 508 } 509 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap)); 510 if (r->eap == NULL) 511 return NULL; 512 513 for (e = 0; e < r->eap_count; e++) { 514 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end); 515 if (pos == NULL) 516 return NULL; 517 } 518 519 return f_end; 520 } 521 522 523 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count) 524 { 525 struct nai_realm *realm; 526 const u8 *pos, *end; 527 u16 i, num; 528 size_t left; 529 530 if (anqp == NULL) 531 return NULL; 532 left = wpabuf_len(anqp); 533 if (left < 2) 534 return NULL; 535 536 pos = wpabuf_head_u8(anqp); 537 end = pos + left; 538 num = WPA_GET_LE16(pos); 539 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num); 540 pos += 2; 541 left -= 2; 542 543 if (num > left / 5) { 544 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not " 545 "enough data (%u octets) for that many realms", 546 num, (unsigned int) left); 547 return NULL; 548 } 549 550 realm = os_calloc(num, sizeof(struct nai_realm)); 551 if (realm == NULL) 552 return NULL; 553 554 for (i = 0; i < num; i++) { 555 pos = nai_realm_parse_realm(&realm[i], pos, end); 556 if (pos == NULL) { 557 nai_realm_free(realm, num); 558 return NULL; 559 } 560 } 561 562 *count = num; 563 return realm; 564 } 565 566 567 static int nai_realm_match(struct nai_realm *realm, const char *home_realm) 568 { 569 char *tmp, *pos, *end; 570 int match = 0; 571 572 if (realm->realm == NULL || home_realm == NULL) 573 return 0; 574 575 if (os_strchr(realm->realm, ';') == NULL) 576 return os_strcasecmp(realm->realm, home_realm) == 0; 577 578 tmp = os_strdup(realm->realm); 579 if (tmp == NULL) 580 return 0; 581 582 pos = tmp; 583 while (*pos) { 584 end = os_strchr(pos, ';'); 585 if (end) 586 *end = '\0'; 587 if (os_strcasecmp(pos, home_realm) == 0) { 588 match = 1; 589 break; 590 } 591 if (end == NULL) 592 break; 593 pos = end + 1; 594 } 595 596 os_free(tmp); 597 598 return match; 599 } 600 601 602 static int nai_realm_cred_username(struct wpa_supplicant *wpa_s, 603 struct nai_realm_eap *eap) 604 { 605 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) { 606 wpa_msg(wpa_s, MSG_DEBUG, 607 "nai-realm-cred-username: EAP method not supported: %d", 608 eap->method); 609 return 0; /* method not supported */ 610 } 611 612 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP && 613 eap->method != EAP_TYPE_FAST) { 614 /* Only tunneled methods with username/password supported */ 615 wpa_msg(wpa_s, MSG_DEBUG, 616 "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST", 617 eap->method); 618 return 0; 619 } 620 621 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) { 622 if (eap->inner_method && 623 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) { 624 wpa_msg(wpa_s, MSG_DEBUG, 625 "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d", 626 eap->inner_method); 627 return 0; 628 } 629 if (!eap->inner_method && 630 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) { 631 wpa_msg(wpa_s, MSG_DEBUG, 632 "nai-realm-cred-username: MSCHAPv2 not supported"); 633 return 0; 634 } 635 } 636 637 if (eap->method == EAP_TYPE_TTLS) { 638 if (eap->inner_method == 0 && eap->inner_non_eap == 0) 639 return 1; /* Assume TTLS/MSCHAPv2 is used */ 640 if (eap->inner_method && 641 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) { 642 wpa_msg(wpa_s, MSG_DEBUG, 643 "nai-realm-cred-username: TTLS, but inner not supported: %d", 644 eap->inner_method); 645 return 0; 646 } 647 if (eap->inner_non_eap && 648 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP && 649 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP && 650 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP && 651 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) { 652 wpa_msg(wpa_s, MSG_DEBUG, 653 "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d", 654 eap->inner_non_eap); 655 return 0; 656 } 657 } 658 659 if (eap->inner_method && 660 eap->inner_method != EAP_TYPE_GTC && 661 eap->inner_method != EAP_TYPE_MSCHAPV2) { 662 wpa_msg(wpa_s, MSG_DEBUG, 663 "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d", 664 eap->inner_method); 665 return 0; 666 } 667 668 return 1; 669 } 670 671 672 static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s, 673 struct nai_realm_eap *eap) 674 { 675 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) { 676 wpa_msg(wpa_s, MSG_DEBUG, 677 "nai-realm-cred-cert: Method not supported: %d", 678 eap->method); 679 return 0; /* method not supported */ 680 } 681 682 if (eap->method != EAP_TYPE_TLS) { 683 /* Only EAP-TLS supported for credential authentication */ 684 wpa_msg(wpa_s, MSG_DEBUG, 685 "nai-realm-cred-cert: Method not TLS: %d", 686 eap->method); 687 return 0; 688 } 689 690 return 1; 691 } 692 693 694 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s, 695 struct wpa_cred *cred, 696 struct nai_realm *realm) 697 { 698 u8 e; 699 700 if (cred->username == NULL || 701 cred->username[0] == '\0' || 702 ((cred->password == NULL || 703 cred->password[0] == '\0') && 704 (cred->private_key == NULL || 705 cred->private_key[0] == '\0'))) { 706 wpa_msg(wpa_s, MSG_DEBUG, 707 "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s", 708 cred->username ? cred->username : "NULL", 709 cred->password ? cred->password : "NULL", 710 cred->private_key ? cred->private_key : "NULL"); 711 return NULL; 712 } 713 714 for (e = 0; e < realm->eap_count; e++) { 715 struct nai_realm_eap *eap = &realm->eap[e]; 716 if (cred->password && cred->password[0] && 717 nai_realm_cred_username(wpa_s, eap)) 718 return eap; 719 if (cred->private_key && cred->private_key[0] && 720 nai_realm_cred_cert(wpa_s, eap)) 721 return eap; 722 } 723 724 return NULL; 725 } 726 727 728 #ifdef INTERWORKING_3GPP 729 730 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len) 731 { 732 u8 plmn[3], plmn2[3]; 733 const u8 *pos, *end; 734 u8 udhl; 735 736 /* 737 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network 738 * operator is allowed to include only two digits of the MNC, so allow 739 * matches based on both two and three digit MNC assumptions. Since some 740 * SIM/USIM cards may not expose MNC length conveniently, we may be 741 * provided the default MNC length 3 here and as such, checking with MNC 742 * length 2 is justifiable even though 3GPP TS 24.234 does not mention 743 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used 744 * with otherwise matching values would not be good idea in general, so 745 * this should not result in selecting incorrect networks. 746 */ 747 /* Match with 3 digit MNC */ 748 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4); 749 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4); 750 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4); 751 /* Match with 2 digit MNC */ 752 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4); 753 plmn2[1] = (imsi[2] - '0') | 0xf0; 754 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4); 755 756 if (anqp == NULL) 757 return 0; 758 pos = wpabuf_head_u8(anqp); 759 end = pos + wpabuf_len(anqp); 760 if (end - pos < 2) 761 return 0; 762 if (*pos != 0) { 763 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos); 764 return 0; 765 } 766 pos++; 767 udhl = *pos++; 768 if (udhl > end - pos) { 769 wpa_printf(MSG_DEBUG, "Invalid UDHL"); 770 return 0; 771 } 772 end = pos + udhl; 773 774 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)", 775 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2], 776 imsi, mnc_len); 777 778 while (end - pos >= 2) { 779 u8 iei, len; 780 const u8 *l_end; 781 iei = *pos++; 782 len = *pos++ & 0x7f; 783 if (len > end - pos) 784 break; 785 l_end = pos + len; 786 787 if (iei == 0 && len > 0) { 788 /* PLMN List */ 789 u8 num, i; 790 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element", 791 pos, len); 792 num = *pos++; 793 for (i = 0; i < num; i++) { 794 if (l_end - pos < 3) 795 break; 796 if (os_memcmp(pos, plmn, 3) == 0 || 797 os_memcmp(pos, plmn2, 3) == 0) 798 return 1; /* Found matching PLMN */ 799 pos += 3; 800 } 801 } else { 802 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element", 803 pos, len); 804 } 805 806 pos = l_end; 807 } 808 809 return 0; 810 } 811 812 813 static int build_root_nai(char *nai, size_t nai_len, const char *imsi, 814 size_t mnc_len, char prefix) 815 { 816 const char *sep, *msin; 817 char *end, *pos; 818 size_t msin_len, plmn_len; 819 820 /* 821 * TS 23.003, Clause 14 (3GPP to WLAN Interworking) 822 * Root NAI: 823 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org 824 * <MNC> is zero-padded to three digits in case two-digit MNC is used 825 */ 826 827 if (imsi == NULL || os_strlen(imsi) > 16) { 828 wpa_printf(MSG_DEBUG, "No valid IMSI available"); 829 return -1; 830 } 831 sep = os_strchr(imsi, '-'); 832 if (sep) { 833 plmn_len = sep - imsi; 834 msin = sep + 1; 835 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) { 836 plmn_len = 3 + mnc_len; 837 msin = imsi + plmn_len; 838 } else 839 return -1; 840 if (plmn_len != 5 && plmn_len != 6) 841 return -1; 842 msin_len = os_strlen(msin); 843 844 pos = nai; 845 end = nai + nai_len; 846 if (prefix) 847 *pos++ = prefix; 848 os_memcpy(pos, imsi, plmn_len); 849 pos += plmn_len; 850 os_memcpy(pos, msin, msin_len); 851 pos += msin_len; 852 pos += os_snprintf(pos, end - pos, "@wlan.mnc"); 853 if (plmn_len == 5) { 854 *pos++ = '0'; 855 *pos++ = imsi[3]; 856 *pos++ = imsi[4]; 857 } else { 858 *pos++ = imsi[3]; 859 *pos++ = imsi[4]; 860 *pos++ = imsi[5]; 861 } 862 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org", 863 imsi[0], imsi[1], imsi[2]); 864 865 return 0; 866 } 867 868 869 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix) 870 { 871 char nai[100]; 872 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0) 873 return -1; 874 return wpa_config_set_quoted(ssid, "identity", nai); 875 } 876 877 #endif /* INTERWORKING_3GPP */ 878 879 880 static int already_connected(struct wpa_supplicant *wpa_s, 881 struct wpa_cred *cred, struct wpa_bss *bss) 882 { 883 struct wpa_ssid *ssid, *sel_ssid; 884 struct wpa_bss *selected; 885 886 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL) 887 return 0; 888 889 ssid = wpa_s->current_ssid; 890 if (ssid->parent_cred != cred) 891 return 0; 892 893 if (ssid->ssid_len != bss->ssid_len || 894 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0) 895 return 0; 896 897 sel_ssid = NULL; 898 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid); 899 if (selected && sel_ssid && sel_ssid->priority > ssid->priority) 900 return 0; /* higher priority network in scan results */ 901 902 return 1; 903 } 904 905 906 static void remove_duplicate_network(struct wpa_supplicant *wpa_s, 907 struct wpa_cred *cred, 908 struct wpa_bss *bss) 909 { 910 struct wpa_ssid *ssid; 911 912 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 913 if (ssid->parent_cred != cred) 914 continue; 915 if (ssid->ssid_len != bss->ssid_len || 916 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0) 917 continue; 918 919 break; 920 } 921 922 if (ssid == NULL) 923 return; 924 925 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential"); 926 927 if (ssid == wpa_s->current_ssid) { 928 wpa_sm_set_config(wpa_s->wpa, NULL); 929 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 930 wpa_s->own_disconnect_req = 1; 931 wpa_supplicant_deauthenticate(wpa_s, 932 WLAN_REASON_DEAUTH_LEAVING); 933 } 934 935 wpas_notify_network_removed(wpa_s, ssid); 936 wpa_config_remove_network(wpa_s->conf, ssid->id); 937 } 938 939 940 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s, 941 struct wpa_ssid *ssid) 942 { 943 const char *key_mgmt = NULL; 944 #ifdef CONFIG_IEEE80211R 945 int res; 946 struct wpa_driver_capa capa; 947 948 res = wpa_drv_get_capa(wpa_s, &capa); 949 if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) { 950 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ? 951 "WPA-EAP WPA-EAP-SHA256 FT-EAP" : 952 "WPA-EAP FT-EAP"; 953 } 954 #endif /* CONFIG_IEEE80211R */ 955 956 if (!key_mgmt) 957 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ? 958 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP"; 959 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 || 960 wpa_config_set(ssid, "proto", "RSN", 0) < 0 || 961 wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0) 962 return -1; 963 return 0; 964 } 965 966 967 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s, 968 struct wpa_cred *cred, 969 struct wpa_bss *bss, int only_add) 970 { 971 #ifdef INTERWORKING_3GPP 972 struct wpa_ssid *ssid; 973 int eap_type; 974 int res; 975 char prefix; 976 977 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) 978 return -1; 979 980 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR 981 " (3GPP)", MAC2STR(bss->bssid)); 982 983 if (already_connected(wpa_s, cred, bss)) { 984 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 985 MAC2STR(bss->bssid)); 986 return wpa_s->current_ssid->id; 987 } 988 989 remove_duplicate_network(wpa_s, cred, bss); 990 991 ssid = wpa_config_add_network(wpa_s->conf); 992 if (ssid == NULL) 993 return -1; 994 ssid->parent_cred = cred; 995 996 wpas_notify_network_added(wpa_s, ssid); 997 wpa_config_set_network_defaults(ssid); 998 ssid->priority = cred->priority; 999 ssid->temporary = 1; 1000 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1001 if (ssid->ssid == NULL) 1002 goto fail; 1003 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1004 ssid->ssid_len = bss->ssid_len; 1005 ssid->eap.sim_num = cred->sim_num; 1006 1007 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1008 goto fail; 1009 1010 eap_type = EAP_TYPE_SIM; 1011 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard)) 1012 eap_type = EAP_TYPE_AKA; 1013 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) { 1014 if (cred->eap_method[0].method == EAP_TYPE_SIM || 1015 cred->eap_method[0].method == EAP_TYPE_AKA || 1016 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME) 1017 eap_type = cred->eap_method[0].method; 1018 } 1019 1020 switch (eap_type) { 1021 case EAP_TYPE_SIM: 1022 prefix = '1'; 1023 res = wpa_config_set(ssid, "eap", "SIM", 0); 1024 break; 1025 case EAP_TYPE_AKA: 1026 prefix = '0'; 1027 res = wpa_config_set(ssid, "eap", "AKA", 0); 1028 break; 1029 case EAP_TYPE_AKA_PRIME: 1030 prefix = '6'; 1031 res = wpa_config_set(ssid, "eap", "AKA'", 0); 1032 break; 1033 default: 1034 res = -1; 1035 break; 1036 } 1037 if (res < 0) { 1038 wpa_msg(wpa_s, MSG_DEBUG, 1039 "Selected EAP method (%d) not supported", eap_type); 1040 goto fail; 1041 } 1042 1043 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) { 1044 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI"); 1045 goto fail; 1046 } 1047 1048 if (cred->milenage && cred->milenage[0]) { 1049 if (wpa_config_set_quoted(ssid, "password", 1050 cred->milenage) < 0) 1051 goto fail; 1052 } else if (cred->pcsc) { 1053 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0) 1054 goto fail; 1055 if (wpa_s->conf->pcsc_pin && 1056 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin) 1057 < 0) 1058 goto fail; 1059 } 1060 1061 wpa_s->next_ssid = ssid; 1062 wpa_config_update_prio_list(wpa_s->conf); 1063 if (!only_add) 1064 interworking_reconnect(wpa_s); 1065 1066 return ssid->id; 1067 1068 fail: 1069 wpas_notify_network_removed(wpa_s, ssid); 1070 wpa_config_remove_network(wpa_s->conf, ssid->id); 1071 #endif /* INTERWORKING_3GPP */ 1072 return -1; 1073 } 1074 1075 1076 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id, 1077 size_t rc_len) 1078 { 1079 const u8 *pos, *end; 1080 u8 lens; 1081 1082 if (ie == NULL) 1083 return 0; 1084 1085 pos = ie + 2; 1086 end = ie + 2 + ie[1]; 1087 1088 /* Roaming Consortium element: 1089 * Number of ANQP OIs 1090 * OI #1 and #2 lengths 1091 * OI #1, [OI #2], [OI #3] 1092 */ 1093 1094 if (end - pos < 2) 1095 return 0; 1096 1097 pos++; /* skip Number of ANQP OIs */ 1098 lens = *pos++; 1099 if ((lens & 0x0f) + (lens >> 4) > end - pos) 1100 return 0; 1101 1102 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) 1103 return 1; 1104 pos += lens & 0x0f; 1105 1106 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) 1107 return 1; 1108 pos += lens >> 4; 1109 1110 if (pos < end && (size_t) (end - pos) == rc_len && 1111 os_memcmp(pos, rc_id, rc_len) == 0) 1112 return 1; 1113 1114 return 0; 1115 } 1116 1117 1118 static int roaming_consortium_anqp_match(const struct wpabuf *anqp, 1119 const u8 *rc_id, size_t rc_len) 1120 { 1121 const u8 *pos, *end; 1122 u8 len; 1123 1124 if (anqp == NULL) 1125 return 0; 1126 1127 pos = wpabuf_head(anqp); 1128 end = pos + wpabuf_len(anqp); 1129 1130 /* Set of <OI Length, OI> duples */ 1131 while (pos < end) { 1132 len = *pos++; 1133 if (len > end - pos) 1134 break; 1135 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) 1136 return 1; 1137 pos += len; 1138 } 1139 1140 return 0; 1141 } 1142 1143 1144 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp, 1145 const u8 *rc_id, size_t rc_len) 1146 { 1147 return roaming_consortium_element_match(ie, rc_id, rc_len) || 1148 roaming_consortium_anqp_match(anqp, rc_id, rc_len); 1149 } 1150 1151 1152 static int cred_roaming_consortiums_match(const u8 *ie, 1153 const struct wpabuf *anqp, 1154 const struct wpa_cred *cred) 1155 { 1156 unsigned int i; 1157 1158 for (i = 0; i < cred->num_roaming_consortiums; i++) { 1159 if (roaming_consortium_match(ie, anqp, 1160 cred->roaming_consortiums[i], 1161 cred->roaming_consortiums_len[i])) 1162 return 1; 1163 } 1164 1165 return 0; 1166 } 1167 1168 1169 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss) 1170 { 1171 const u8 *ie; 1172 1173 if (cred->required_roaming_consortium_len == 0) 1174 return 0; 1175 1176 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1177 1178 if (ie == NULL && 1179 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL)) 1180 return 1; 1181 1182 return !roaming_consortium_match(ie, 1183 bss->anqp ? 1184 bss->anqp->roaming_consortium : NULL, 1185 cred->required_roaming_consortium, 1186 cred->required_roaming_consortium_len); 1187 } 1188 1189 1190 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss) 1191 { 1192 size_t i; 1193 1194 if (!cred->excluded_ssid) 1195 return 0; 1196 1197 for (i = 0; i < cred->num_excluded_ssid; i++) { 1198 struct excluded_ssid *e = &cred->excluded_ssid[i]; 1199 if (bss->ssid_len == e->ssid_len && 1200 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0) 1201 return 1; 1202 } 1203 1204 return 0; 1205 } 1206 1207 1208 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s, 1209 struct wpa_cred *cred, struct wpa_bss *bss) 1210 { 1211 #ifdef CONFIG_HS20 1212 int res; 1213 unsigned int dl_bandwidth, ul_bandwidth; 1214 const u8 *wan; 1215 u8 wan_info, dl_load, ul_load; 1216 u16 lmd; 1217 u32 ul_speed, dl_speed; 1218 1219 if (!cred->min_dl_bandwidth_home && 1220 !cred->min_ul_bandwidth_home && 1221 !cred->min_dl_bandwidth_roaming && 1222 !cred->min_ul_bandwidth_roaming) 1223 return 0; /* No bandwidth constraint specified */ 1224 1225 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL) 1226 return 0; /* No WAN Metrics known - ignore constraint */ 1227 1228 wan = wpabuf_head(bss->anqp->hs20_wan_metrics); 1229 wan_info = wan[0]; 1230 if (wan_info & BIT(3)) 1231 return 1; /* WAN link at capacity */ 1232 lmd = WPA_GET_LE16(wan + 11); 1233 if (lmd == 0) 1234 return 0; /* Downlink/Uplink Load was not measured */ 1235 dl_speed = WPA_GET_LE32(wan + 1); 1236 ul_speed = WPA_GET_LE32(wan + 5); 1237 dl_load = wan[9]; 1238 ul_load = wan[10]; 1239 1240 if (dl_speed >= 0xffffff) 1241 dl_bandwidth = dl_speed / 255 * (255 - dl_load); 1242 else 1243 dl_bandwidth = dl_speed * (255 - dl_load) / 255; 1244 1245 if (ul_speed >= 0xffffff) 1246 ul_bandwidth = ul_speed / 255 * (255 - ul_load); 1247 else 1248 ul_bandwidth = ul_speed * (255 - ul_load) / 255; 1249 1250 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? 1251 bss->anqp->domain_name : NULL); 1252 if (res > 0) { 1253 if (cred->min_dl_bandwidth_home > dl_bandwidth) 1254 return 1; 1255 if (cred->min_ul_bandwidth_home > ul_bandwidth) 1256 return 1; 1257 } else { 1258 if (cred->min_dl_bandwidth_roaming > dl_bandwidth) 1259 return 1; 1260 if (cred->min_ul_bandwidth_roaming > ul_bandwidth) 1261 return 1; 1262 } 1263 #endif /* CONFIG_HS20 */ 1264 1265 return 0; 1266 } 1267 1268 1269 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s, 1270 struct wpa_cred *cred, struct wpa_bss *bss) 1271 { 1272 const u8 *ie; 1273 int res; 1274 1275 if (!cred->max_bss_load) 1276 return 0; /* No BSS Load constraint specified */ 1277 1278 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD); 1279 if (ie == NULL || ie[1] < 3) 1280 return 0; /* No BSS Load advertised */ 1281 1282 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? 1283 bss->anqp->domain_name : NULL); 1284 if (res <= 0) 1285 return 0; /* Not a home network */ 1286 1287 return ie[4] > cred->max_bss_load; 1288 } 1289 1290 1291 #ifdef CONFIG_HS20 1292 1293 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto) 1294 { 1295 while (end - pos >= 4) { 1296 if (pos[0] == proto && pos[3] == 1 /* Open */) 1297 return 1; 1298 pos += 4; 1299 } 1300 1301 return 0; 1302 } 1303 1304 1305 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto, 1306 u16 port) 1307 { 1308 while (end - pos >= 4) { 1309 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port && 1310 pos[3] == 1 /* Open */) 1311 return 1; 1312 pos += 4; 1313 } 1314 1315 return 0; 1316 } 1317 1318 #endif /* CONFIG_HS20 */ 1319 1320 1321 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s, 1322 struct wpa_cred *cred, struct wpa_bss *bss) 1323 { 1324 #ifdef CONFIG_HS20 1325 int res; 1326 const u8 *capab, *end; 1327 unsigned int i, j; 1328 int *ports; 1329 1330 if (!cred->num_req_conn_capab) 1331 return 0; /* No connection capability constraint specified */ 1332 1333 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL) 1334 return 0; /* No Connection Capability known - ignore constraint 1335 */ 1336 1337 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? 1338 bss->anqp->domain_name : NULL); 1339 if (res > 0) 1340 return 0; /* No constraint in home network */ 1341 1342 capab = wpabuf_head(bss->anqp->hs20_connection_capability); 1343 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability); 1344 1345 for (i = 0; i < cred->num_req_conn_capab; i++) { 1346 ports = cred->req_conn_capab_port[i]; 1347 if (!ports) { 1348 if (!has_proto_match(capab, end, 1349 cred->req_conn_capab_proto[i])) 1350 return 1; 1351 } else { 1352 for (j = 0; ports[j] > -1; j++) { 1353 if (!has_proto_port_match( 1354 capab, end, 1355 cred->req_conn_capab_proto[i], 1356 ports[j])) 1357 return 1; 1358 } 1359 } 1360 } 1361 #endif /* CONFIG_HS20 */ 1362 1363 return 0; 1364 } 1365 1366 1367 static struct wpa_cred * interworking_credentials_available_roaming_consortium( 1368 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 1369 int *excluded) 1370 { 1371 struct wpa_cred *cred, *selected = NULL; 1372 const u8 *ie; 1373 const struct wpabuf *anqp; 1374 int is_excluded = 0; 1375 1376 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1377 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL; 1378 1379 if (!ie && !anqp) 1380 return NULL; 1381 1382 if (wpa_s->conf->cred == NULL) 1383 return NULL; 1384 1385 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 1386 if (cred->roaming_consortium_len == 0 && 1387 cred->num_roaming_consortiums == 0) 1388 continue; 1389 1390 if ((cred->roaming_consortium_len == 0 || 1391 !roaming_consortium_match(ie, anqp, 1392 cred->roaming_consortium, 1393 cred->roaming_consortium_len)) && 1394 !cred_roaming_consortiums_match(ie, anqp, cred)) 1395 continue; 1396 1397 if (cred_no_required_oi_match(cred, bss)) 1398 continue; 1399 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss)) 1400 continue; 1401 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss)) 1402 continue; 1403 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss)) 1404 continue; 1405 if (cred_excluded_ssid(cred, bss)) { 1406 if (excluded == NULL) 1407 continue; 1408 if (selected == NULL) { 1409 selected = cred; 1410 is_excluded = 1; 1411 } 1412 } else { 1413 if (selected == NULL || is_excluded || 1414 cred_prio_cmp(selected, cred) < 0) { 1415 selected = cred; 1416 is_excluded = 0; 1417 } 1418 } 1419 } 1420 1421 if (excluded) 1422 *excluded = is_excluded; 1423 1424 return selected; 1425 } 1426 1427 1428 static int interworking_set_eap_params(struct wpa_ssid *ssid, 1429 struct wpa_cred *cred, int ttls) 1430 { 1431 if (cred->eap_method) { 1432 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF && 1433 cred->eap_method->method == EAP_TYPE_TTLS; 1434 1435 os_free(ssid->eap.eap_methods); 1436 ssid->eap.eap_methods = 1437 os_malloc(sizeof(struct eap_method_type) * 2); 1438 if (ssid->eap.eap_methods == NULL) 1439 return -1; 1440 os_memcpy(ssid->eap.eap_methods, cred->eap_method, 1441 sizeof(*cred->eap_method)); 1442 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF; 1443 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE; 1444 } 1445 1446 if (ttls && cred->username && cred->username[0]) { 1447 const char *pos; 1448 char *anon; 1449 /* Use anonymous NAI in Phase 1 */ 1450 pos = os_strchr(cred->username, '@'); 1451 if (pos) { 1452 size_t buflen = 9 + os_strlen(pos) + 1; 1453 anon = os_malloc(buflen); 1454 if (anon == NULL) 1455 return -1; 1456 os_snprintf(anon, buflen, "anonymous%s", pos); 1457 } else if (cred->realm) { 1458 size_t buflen = 10 + os_strlen(cred->realm) + 1; 1459 anon = os_malloc(buflen); 1460 if (anon == NULL) 1461 return -1; 1462 os_snprintf(anon, buflen, "anonymous@%s", cred->realm); 1463 } else { 1464 anon = os_strdup("anonymous"); 1465 if (anon == NULL) 1466 return -1; 1467 } 1468 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) < 1469 0) { 1470 os_free(anon); 1471 return -1; 1472 } 1473 os_free(anon); 1474 } 1475 1476 if (!ttls && cred->username && cred->username[0] && cred->realm && 1477 !os_strchr(cred->username, '@')) { 1478 char *id; 1479 size_t buflen; 1480 int res; 1481 1482 buflen = os_strlen(cred->username) + 1 + 1483 os_strlen(cred->realm) + 1; 1484 1485 id = os_malloc(buflen); 1486 if (!id) 1487 return -1; 1488 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm); 1489 res = wpa_config_set_quoted(ssid, "identity", id); 1490 os_free(id); 1491 if (res < 0) 1492 return -1; 1493 } else if (cred->username && cred->username[0] && 1494 wpa_config_set_quoted(ssid, "identity", cred->username) < 0) 1495 return -1; 1496 1497 if (cred->password && cred->password[0]) { 1498 if (cred->ext_password && 1499 wpa_config_set(ssid, "password", cred->password, 0) < 0) 1500 return -1; 1501 if (!cred->ext_password && 1502 wpa_config_set_quoted(ssid, "password", cred->password) < 1503 0) 1504 return -1; 1505 } 1506 1507 if (cred->client_cert && cred->client_cert[0] && 1508 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0) 1509 return -1; 1510 1511 #ifdef ANDROID 1512 if (cred->private_key && 1513 os_strncmp(cred->private_key, "keystore://", 11) == 0) { 1514 /* Use OpenSSL engine configuration for Android keystore */ 1515 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 || 1516 wpa_config_set_quoted(ssid, "key_id", 1517 cred->private_key + 11) < 0 || 1518 wpa_config_set(ssid, "engine", "1", 0) < 0) 1519 return -1; 1520 } else 1521 #endif /* ANDROID */ 1522 if (cred->private_key && cred->private_key[0] && 1523 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0) 1524 return -1; 1525 1526 if (cred->private_key_passwd && cred->private_key_passwd[0] && 1527 wpa_config_set_quoted(ssid, "private_key_passwd", 1528 cred->private_key_passwd) < 0) 1529 return -1; 1530 1531 if (cred->phase1) { 1532 os_free(ssid->eap.phase1); 1533 ssid->eap.phase1 = os_strdup(cred->phase1); 1534 } 1535 if (cred->phase2) { 1536 os_free(ssid->eap.phase2); 1537 ssid->eap.phase2 = os_strdup(cred->phase2); 1538 } 1539 1540 if (cred->ca_cert && cred->ca_cert[0] && 1541 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0) 1542 return -1; 1543 1544 if (cred->domain_suffix_match && cred->domain_suffix_match[0] && 1545 wpa_config_set_quoted(ssid, "domain_suffix_match", 1546 cred->domain_suffix_match) < 0) 1547 return -1; 1548 1549 ssid->eap.ocsp = cred->ocsp; 1550 1551 return 0; 1552 } 1553 1554 1555 static int interworking_connect_roaming_consortium( 1556 struct wpa_supplicant *wpa_s, struct wpa_cred *cred, 1557 struct wpa_bss *bss, int only_add) 1558 { 1559 struct wpa_ssid *ssid; 1560 const u8 *ie; 1561 const struct wpabuf *anqp; 1562 unsigned int i; 1563 1564 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR 1565 " based on roaming consortium match", MAC2STR(bss->bssid)); 1566 1567 if (already_connected(wpa_s, cred, bss)) { 1568 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 1569 MAC2STR(bss->bssid)); 1570 return wpa_s->current_ssid->id; 1571 } 1572 1573 remove_duplicate_network(wpa_s, cred, bss); 1574 1575 ssid = wpa_config_add_network(wpa_s->conf); 1576 if (ssid == NULL) 1577 return -1; 1578 ssid->parent_cred = cred; 1579 wpas_notify_network_added(wpa_s, ssid); 1580 wpa_config_set_network_defaults(ssid); 1581 ssid->priority = cred->priority; 1582 ssid->temporary = 1; 1583 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1584 if (ssid->ssid == NULL) 1585 goto fail; 1586 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1587 ssid->ssid_len = bss->ssid_len; 1588 1589 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1590 goto fail; 1591 1592 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1593 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL; 1594 for (i = 0; (ie || anqp) && i < cred->num_roaming_consortiums; i++) { 1595 if (!roaming_consortium_match( 1596 ie, anqp, cred->roaming_consortiums[i], 1597 cred->roaming_consortiums_len[i])) 1598 continue; 1599 1600 ssid->roaming_consortium_selection = 1601 os_malloc(cred->roaming_consortiums_len[i]); 1602 if (!ssid->roaming_consortium_selection) 1603 goto fail; 1604 os_memcpy(ssid->roaming_consortium_selection, 1605 cred->roaming_consortiums[i], 1606 cred->roaming_consortiums_len[i]); 1607 ssid->roaming_consortium_selection_len = 1608 cred->roaming_consortiums_len[i]; 1609 break; 1610 } 1611 1612 if (cred->eap_method == NULL) { 1613 wpa_msg(wpa_s, MSG_DEBUG, 1614 "Interworking: No EAP method set for credential using roaming consortium"); 1615 goto fail; 1616 } 1617 1618 if (interworking_set_eap_params( 1619 ssid, cred, 1620 cred->eap_method->vendor == EAP_VENDOR_IETF && 1621 cred->eap_method->method == EAP_TYPE_TTLS) < 0) 1622 goto fail; 1623 1624 wpa_s->next_ssid = ssid; 1625 wpa_config_update_prio_list(wpa_s->conf); 1626 if (!only_add) 1627 interworking_reconnect(wpa_s); 1628 1629 return ssid->id; 1630 1631 fail: 1632 wpas_notify_network_removed(wpa_s, ssid); 1633 wpa_config_remove_network(wpa_s->conf, ssid->id); 1634 return -1; 1635 } 1636 1637 1638 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 1639 int only_add) 1640 { 1641 struct wpa_cred *cred, *cred_rc, *cred_3gpp; 1642 struct wpa_ssid *ssid; 1643 struct nai_realm *realm; 1644 struct nai_realm_eap *eap = NULL; 1645 u16 count, i; 1646 char buf[100]; 1647 int excluded = 0, *excl = &excluded; 1648 const char *name; 1649 1650 if (wpa_s->conf->cred == NULL || bss == NULL) 1651 return -1; 1652 if (disallowed_bssid(wpa_s, bss->bssid) || 1653 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 1654 wpa_msg(wpa_s, MSG_DEBUG, 1655 "Interworking: Reject connection to disallowed BSS " 1656 MACSTR, MAC2STR(bss->bssid)); 1657 return -1; 1658 } 1659 1660 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR 1661 " for connection", 1662 MAC2STR(bss->bssid)); 1663 1664 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { 1665 /* 1666 * We currently support only HS 2.0 networks and those are 1667 * required to use WPA2-Enterprise. 1668 */ 1669 wpa_msg(wpa_s, MSG_DEBUG, 1670 "Interworking: Network does not use RSN"); 1671 return -1; 1672 } 1673 1674 cred_rc = interworking_credentials_available_roaming_consortium( 1675 wpa_s, bss, 0, excl); 1676 if (cred_rc) { 1677 wpa_msg(wpa_s, MSG_DEBUG, 1678 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d", 1679 cred_rc->priority, cred_rc->sp_priority); 1680 if (excl && !(*excl)) 1681 excl = NULL; 1682 } 1683 1684 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl); 1685 if (cred) { 1686 wpa_msg(wpa_s, MSG_DEBUG, 1687 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d", 1688 cred->priority, cred->sp_priority); 1689 if (excl && !(*excl)) 1690 excl = NULL; 1691 } 1692 1693 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0, 1694 excl); 1695 if (cred_3gpp) { 1696 wpa_msg(wpa_s, MSG_DEBUG, 1697 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d", 1698 cred_3gpp->priority, cred_3gpp->sp_priority); 1699 if (excl && !(*excl)) 1700 excl = NULL; 1701 } 1702 1703 if (!cred_rc && !cred && !cred_3gpp) { 1704 wpa_msg(wpa_s, MSG_DEBUG, 1705 "Interworking: No full credential matches - consider options without BW(etc.) limits"); 1706 cred_rc = interworking_credentials_available_roaming_consortium( 1707 wpa_s, bss, 1, excl); 1708 if (cred_rc) { 1709 wpa_msg(wpa_s, MSG_DEBUG, 1710 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)", 1711 cred_rc->priority, cred_rc->sp_priority); 1712 if (excl && !(*excl)) 1713 excl = NULL; 1714 } 1715 1716 cred = interworking_credentials_available_realm(wpa_s, bss, 1, 1717 excl); 1718 if (cred) { 1719 wpa_msg(wpa_s, MSG_DEBUG, 1720 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)", 1721 cred->priority, cred->sp_priority); 1722 if (excl && !(*excl)) 1723 excl = NULL; 1724 } 1725 1726 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 1727 1, excl); 1728 if (cred_3gpp) { 1729 wpa_msg(wpa_s, MSG_DEBUG, 1730 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)", 1731 cred_3gpp->priority, cred_3gpp->sp_priority); 1732 if (excl && !(*excl)) 1733 excl = NULL; 1734 } 1735 } 1736 1737 if (cred_rc && 1738 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) && 1739 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0)) 1740 return interworking_connect_roaming_consortium(wpa_s, cred_rc, 1741 bss, only_add); 1742 1743 if (cred_3gpp && 1744 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) { 1745 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss, 1746 only_add); 1747 } 1748 1749 if (cred == NULL) { 1750 wpa_msg(wpa_s, MSG_DEBUG, 1751 "Interworking: No matching credentials found for " 1752 MACSTR, MAC2STR(bss->bssid)); 1753 return -1; 1754 } 1755 1756 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL, 1757 &count); 1758 if (realm == NULL) { 1759 wpa_msg(wpa_s, MSG_DEBUG, 1760 "Interworking: Could not parse NAI Realm list from " 1761 MACSTR, MAC2STR(bss->bssid)); 1762 return -1; 1763 } 1764 1765 for (i = 0; i < count; i++) { 1766 if (!nai_realm_match(&realm[i], cred->realm)) 1767 continue; 1768 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]); 1769 if (eap) 1770 break; 1771 } 1772 1773 if (!eap) { 1774 wpa_msg(wpa_s, MSG_DEBUG, 1775 "Interworking: No matching credentials and EAP method found for " 1776 MACSTR, MAC2STR(bss->bssid)); 1777 nai_realm_free(realm, count); 1778 return -1; 1779 } 1780 1781 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR, 1782 MAC2STR(bss->bssid)); 1783 1784 if (already_connected(wpa_s, cred, bss)) { 1785 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 1786 MAC2STR(bss->bssid)); 1787 nai_realm_free(realm, count); 1788 return 0; 1789 } 1790 1791 remove_duplicate_network(wpa_s, cred, bss); 1792 1793 ssid = wpa_config_add_network(wpa_s->conf); 1794 if (ssid == NULL) { 1795 nai_realm_free(realm, count); 1796 return -1; 1797 } 1798 ssid->parent_cred = cred; 1799 wpas_notify_network_added(wpa_s, ssid); 1800 wpa_config_set_network_defaults(ssid); 1801 ssid->priority = cred->priority; 1802 ssid->temporary = 1; 1803 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1804 if (ssid->ssid == NULL) 1805 goto fail; 1806 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1807 ssid->ssid_len = bss->ssid_len; 1808 1809 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1810 goto fail; 1811 1812 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF, 1813 eap->method), 0) < 0) 1814 goto fail; 1815 1816 switch (eap->method) { 1817 case EAP_TYPE_TTLS: 1818 if (eap->inner_method) { 1819 name = eap_get_name(EAP_VENDOR_IETF, eap->inner_method); 1820 if (!name) 1821 goto fail; 1822 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", name); 1823 if (wpa_config_set(ssid, "phase2", buf, 0) < 0) 1824 goto fail; 1825 break; 1826 } 1827 switch (eap->inner_non_eap) { 1828 case NAI_REALM_INNER_NON_EAP_PAP: 1829 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) < 1830 0) 1831 goto fail; 1832 break; 1833 case NAI_REALM_INNER_NON_EAP_CHAP: 1834 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0) 1835 < 0) 1836 goto fail; 1837 break; 1838 case NAI_REALM_INNER_NON_EAP_MSCHAP: 1839 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"", 1840 0) < 0) 1841 goto fail; 1842 break; 1843 case NAI_REALM_INNER_NON_EAP_MSCHAPV2: 1844 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", 1845 0) < 0) 1846 goto fail; 1847 break; 1848 default: 1849 /* EAP params were not set - assume TTLS/MSCHAPv2 */ 1850 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", 1851 0) < 0) 1852 goto fail; 1853 break; 1854 } 1855 break; 1856 case EAP_TYPE_PEAP: 1857 case EAP_TYPE_FAST: 1858 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"", 1859 0) < 0) 1860 goto fail; 1861 if (wpa_config_set(ssid, "pac_file", 1862 "\"blob://pac_interworking\"", 0) < 0) 1863 goto fail; 1864 name = eap_get_name(EAP_VENDOR_IETF, 1865 eap->inner_method ? eap->inner_method : 1866 EAP_TYPE_MSCHAPV2); 1867 if (name == NULL) 1868 goto fail; 1869 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name); 1870 if (wpa_config_set(ssid, "phase2", buf, 0) < 0) 1871 goto fail; 1872 break; 1873 case EAP_TYPE_TLS: 1874 break; 1875 } 1876 1877 if (interworking_set_eap_params(ssid, cred, 1878 eap->method == EAP_TYPE_TTLS) < 0) 1879 goto fail; 1880 1881 nai_realm_free(realm, count); 1882 1883 wpa_s->next_ssid = ssid; 1884 wpa_config_update_prio_list(wpa_s->conf); 1885 if (!only_add) 1886 interworking_reconnect(wpa_s); 1887 1888 return ssid->id; 1889 1890 fail: 1891 wpas_notify_network_removed(wpa_s, ssid); 1892 wpa_config_remove_network(wpa_s->conf, ssid->id); 1893 nai_realm_free(realm, count); 1894 return -1; 1895 } 1896 1897 1898 #ifdef PCSC_FUNCS 1899 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s) 1900 { 1901 size_t len; 1902 1903 if (wpa_s->imsi[0] && wpa_s->mnc_len) 1904 return 0; 1905 1906 len = sizeof(wpa_s->imsi) - 1; 1907 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 1908 scard_deinit(wpa_s->scard); 1909 wpa_s->scard = NULL; 1910 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 1911 return -1; 1912 } 1913 wpa_s->imsi[len] = '\0'; 1914 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 1915 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 1916 wpa_s->imsi, wpa_s->mnc_len); 1917 1918 return 0; 1919 } 1920 #endif /* PCSC_FUNCS */ 1921 1922 1923 static struct wpa_cred * interworking_credentials_available_3gpp( 1924 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 1925 int *excluded) 1926 { 1927 struct wpa_cred *selected = NULL; 1928 #ifdef INTERWORKING_3GPP 1929 struct wpa_cred *cred; 1930 int ret; 1931 int is_excluded = 0; 1932 1933 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) { 1934 wpa_msg(wpa_s, MSG_DEBUG, 1935 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p", 1936 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL); 1937 return NULL; 1938 } 1939 1940 #ifdef CONFIG_EAP_PROXY 1941 if (!wpa_s->imsi[0]) { 1942 size_t len; 1943 wpa_msg(wpa_s, MSG_DEBUG, 1944 "Interworking: IMSI not available - try to read again through eap_proxy"); 1945 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1, 1946 wpa_s->imsi, 1947 &len); 1948 if (wpa_s->mnc_len > 0) { 1949 wpa_s->imsi[len] = '\0'; 1950 wpa_msg(wpa_s, MSG_DEBUG, 1951 "eap_proxy: IMSI %s (MNC length %d)", 1952 wpa_s->imsi, wpa_s->mnc_len); 1953 } else { 1954 wpa_msg(wpa_s, MSG_DEBUG, 1955 "eap_proxy: IMSI not available"); 1956 } 1957 } 1958 #endif /* CONFIG_EAP_PROXY */ 1959 1960 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 1961 char *sep; 1962 const char *imsi; 1963 int mnc_len; 1964 char imsi_buf[16]; 1965 size_t msin_len; 1966 1967 #ifdef PCSC_FUNCS 1968 if (cred->pcsc && wpa_s->scard) { 1969 if (interworking_pcsc_read_imsi(wpa_s) < 0) 1970 continue; 1971 imsi = wpa_s->imsi; 1972 mnc_len = wpa_s->mnc_len; 1973 goto compare; 1974 } 1975 #endif /* PCSC_FUNCS */ 1976 #ifdef CONFIG_EAP_PROXY 1977 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { 1978 imsi = wpa_s->imsi; 1979 mnc_len = wpa_s->mnc_len; 1980 goto compare; 1981 } 1982 #endif /* CONFIG_EAP_PROXY */ 1983 1984 if (cred->imsi == NULL || !cred->imsi[0] || 1985 (!wpa_s->conf->external_sim && 1986 (cred->milenage == NULL || !cred->milenage[0]))) 1987 continue; 1988 1989 sep = os_strchr(cred->imsi, '-'); 1990 if (sep == NULL || 1991 (sep - cred->imsi != 5 && sep - cred->imsi != 6)) 1992 continue; 1993 mnc_len = sep - cred->imsi - 3; 1994 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len); 1995 sep++; 1996 msin_len = os_strlen(cred->imsi); 1997 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1) 1998 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1; 1999 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len); 2000 imsi_buf[3 + mnc_len + msin_len] = '\0'; 2001 imsi = imsi_buf; 2002 2003 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY) 2004 compare: 2005 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */ 2006 wpa_msg(wpa_s, MSG_DEBUG, 2007 "Interworking: Parsing 3GPP info from " MACSTR, 2008 MAC2STR(bss->bssid)); 2009 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len); 2010 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound", 2011 ret ? "" : "not "); 2012 if (ret) { 2013 if (cred_no_required_oi_match(cred, bss)) 2014 continue; 2015 if (!ignore_bw && 2016 cred_below_min_backhaul(wpa_s, cred, bss)) 2017 continue; 2018 if (!ignore_bw && 2019 cred_over_max_bss_load(wpa_s, cred, bss)) 2020 continue; 2021 if (!ignore_bw && 2022 cred_conn_capab_missing(wpa_s, cred, bss)) 2023 continue; 2024 if (cred_excluded_ssid(cred, bss)) { 2025 if (excluded == NULL) 2026 continue; 2027 if (selected == NULL) { 2028 selected = cred; 2029 is_excluded = 1; 2030 } 2031 } else { 2032 if (selected == NULL || is_excluded || 2033 cred_prio_cmp(selected, cred) < 0) { 2034 selected = cred; 2035 is_excluded = 0; 2036 } 2037 } 2038 } 2039 } 2040 2041 if (excluded) 2042 *excluded = is_excluded; 2043 #endif /* INTERWORKING_3GPP */ 2044 return selected; 2045 } 2046 2047 2048 static struct wpa_cred * interworking_credentials_available_realm( 2049 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 2050 int *excluded) 2051 { 2052 struct wpa_cred *cred, *selected = NULL; 2053 struct nai_realm *realm; 2054 u16 count, i; 2055 int is_excluded = 0; 2056 2057 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL) 2058 return NULL; 2059 2060 if (wpa_s->conf->cred == NULL) 2061 return NULL; 2062 2063 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from " 2064 MACSTR, MAC2STR(bss->bssid)); 2065 realm = nai_realm_parse(bss->anqp->nai_realm, &count); 2066 if (realm == NULL) { 2067 wpa_msg(wpa_s, MSG_DEBUG, 2068 "Interworking: Could not parse NAI Realm list from " 2069 MACSTR, MAC2STR(bss->bssid)); 2070 return NULL; 2071 } 2072 2073 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 2074 if (cred->realm == NULL) 2075 continue; 2076 2077 for (i = 0; i < count; i++) { 2078 if (!nai_realm_match(&realm[i], cred->realm)) 2079 continue; 2080 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) { 2081 if (cred_no_required_oi_match(cred, bss)) 2082 continue; 2083 if (!ignore_bw && 2084 cred_below_min_backhaul(wpa_s, cred, bss)) 2085 continue; 2086 if (!ignore_bw && 2087 cred_over_max_bss_load(wpa_s, cred, bss)) 2088 continue; 2089 if (!ignore_bw && 2090 cred_conn_capab_missing(wpa_s, cred, bss)) 2091 continue; 2092 if (cred_excluded_ssid(cred, bss)) { 2093 if (excluded == NULL) 2094 continue; 2095 if (selected == NULL) { 2096 selected = cred; 2097 is_excluded = 1; 2098 } 2099 } else { 2100 if (selected == NULL || is_excluded || 2101 cred_prio_cmp(selected, cred) < 0) 2102 { 2103 selected = cred; 2104 is_excluded = 0; 2105 } 2106 } 2107 break; 2108 } else { 2109 wpa_msg(wpa_s, MSG_DEBUG, 2110 "Interworking: realm-find-eap returned false"); 2111 } 2112 } 2113 } 2114 2115 nai_realm_free(realm, count); 2116 2117 if (excluded) 2118 *excluded = is_excluded; 2119 2120 return selected; 2121 } 2122 2123 2124 static struct wpa_cred * interworking_credentials_available_helper( 2125 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 2126 int *excluded) 2127 { 2128 struct wpa_cred *cred, *cred2; 2129 int excluded1, excluded2 = 0; 2130 2131 if (disallowed_bssid(wpa_s, bss->bssid) || 2132 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 2133 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS " 2134 MACSTR, MAC2STR(bss->bssid)); 2135 return NULL; 2136 } 2137 2138 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw, 2139 &excluded1); 2140 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw, 2141 &excluded2); 2142 if (cred && cred2 && 2143 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { 2144 cred = cred2; 2145 excluded1 = excluded2; 2146 } 2147 if (!cred) { 2148 cred = cred2; 2149 excluded1 = excluded2; 2150 } 2151 2152 cred2 = interworking_credentials_available_roaming_consortium( 2153 wpa_s, bss, ignore_bw, &excluded2); 2154 if (cred && cred2 && 2155 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { 2156 cred = cred2; 2157 excluded1 = excluded2; 2158 } 2159 if (!cred) { 2160 cred = cred2; 2161 excluded1 = excluded2; 2162 } 2163 2164 if (excluded) 2165 *excluded = excluded1; 2166 return cred; 2167 } 2168 2169 2170 static struct wpa_cred * interworking_credentials_available( 2171 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded) 2172 { 2173 struct wpa_cred *cred; 2174 2175 if (excluded) 2176 *excluded = 0; 2177 cred = interworking_credentials_available_helper(wpa_s, bss, 0, 2178 excluded); 2179 if (cred) 2180 return cred; 2181 return interworking_credentials_available_helper(wpa_s, bss, 1, 2182 excluded); 2183 } 2184 2185 2186 int domain_name_list_contains(struct wpabuf *domain_names, 2187 const char *domain, int exact_match) 2188 { 2189 const u8 *pos, *end; 2190 size_t len; 2191 2192 len = os_strlen(domain); 2193 pos = wpabuf_head(domain_names); 2194 end = pos + wpabuf_len(domain_names); 2195 2196 while (end - pos > 1) { 2197 u8 elen; 2198 2199 elen = *pos++; 2200 if (elen > end - pos) 2201 break; 2202 2203 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name", 2204 pos, elen); 2205 if (elen == len && 2206 os_strncasecmp(domain, (const char *) pos, len) == 0) 2207 return 1; 2208 if (!exact_match && elen > len && pos[elen - len - 1] == '.') { 2209 const char *ap = (const char *) pos; 2210 int offset = elen - len; 2211 2212 if (os_strncasecmp(domain, ap + offset, len) == 0) 2213 return 1; 2214 } 2215 2216 pos += elen; 2217 } 2218 2219 return 0; 2220 } 2221 2222 2223 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s, 2224 struct wpa_cred *cred, 2225 struct wpabuf *domain_names) 2226 { 2227 size_t i; 2228 int ret = -1; 2229 #ifdef INTERWORKING_3GPP 2230 char nai[100], *realm; 2231 2232 char *imsi = NULL; 2233 int mnc_len = 0; 2234 if (cred->imsi) 2235 imsi = cred->imsi; 2236 #ifdef PCSC_FUNCS 2237 else if (cred->pcsc && wpa_s->scard) { 2238 if (interworking_pcsc_read_imsi(wpa_s) < 0) 2239 return -1; 2240 imsi = wpa_s->imsi; 2241 mnc_len = wpa_s->mnc_len; 2242 } 2243 #endif /* PCSC_FUNCS */ 2244 #ifdef CONFIG_EAP_PROXY 2245 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { 2246 imsi = wpa_s->imsi; 2247 mnc_len = wpa_s->mnc_len; 2248 } 2249 #endif /* CONFIG_EAP_PROXY */ 2250 if (domain_names && 2251 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) { 2252 realm = os_strchr(nai, '@'); 2253 if (realm) 2254 realm++; 2255 wpa_msg(wpa_s, MSG_DEBUG, 2256 "Interworking: Search for match with SIM/USIM domain %s", 2257 realm); 2258 if (realm && 2259 domain_name_list_contains(domain_names, realm, 1)) 2260 return 1; 2261 if (realm) 2262 ret = 0; 2263 } 2264 #endif /* INTERWORKING_3GPP */ 2265 2266 if (domain_names == NULL || cred->domain == NULL) 2267 return ret; 2268 2269 for (i = 0; i < cred->num_domain; i++) { 2270 wpa_msg(wpa_s, MSG_DEBUG, 2271 "Interworking: Search for match with home SP FQDN %s", 2272 cred->domain[i]); 2273 if (domain_name_list_contains(domain_names, cred->domain[i], 1)) 2274 return 1; 2275 } 2276 2277 return 0; 2278 } 2279 2280 2281 static int interworking_home_sp(struct wpa_supplicant *wpa_s, 2282 struct wpabuf *domain_names) 2283 { 2284 struct wpa_cred *cred; 2285 2286 if (domain_names == NULL || wpa_s->conf->cred == NULL) 2287 return -1; 2288 2289 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 2290 int res = interworking_home_sp_cred(wpa_s, cred, domain_names); 2291 if (res) 2292 return res; 2293 } 2294 2295 return 0; 2296 } 2297 2298 2299 static int interworking_find_network_match(struct wpa_supplicant *wpa_s) 2300 { 2301 struct wpa_bss *bss; 2302 struct wpa_ssid *ssid; 2303 2304 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2305 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 2306 if (wpas_network_disabled(wpa_s, ssid) || 2307 ssid->mode != WPAS_MODE_INFRA) 2308 continue; 2309 if (ssid->ssid_len != bss->ssid_len || 2310 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) != 2311 0) 2312 continue; 2313 /* 2314 * TODO: Consider more accurate matching of security 2315 * configuration similarly to what is done in events.c 2316 */ 2317 return 1; 2318 } 2319 } 2320 2321 return 0; 2322 } 2323 2324 2325 static int roaming_partner_match(struct wpa_supplicant *wpa_s, 2326 struct roaming_partner *partner, 2327 struct wpabuf *domain_names) 2328 { 2329 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'", 2330 partner->fqdn, partner->exact_match, partner->priority, 2331 partner->country); 2332 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names", 2333 wpabuf_head(domain_names), 2334 wpabuf_len(domain_names)); 2335 if (!domain_name_list_contains(domain_names, partner->fqdn, 2336 partner->exact_match)) 2337 return 0; 2338 /* TODO: match Country */ 2339 return 1; 2340 } 2341 2342 2343 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred, 2344 struct wpa_bss *bss) 2345 { 2346 size_t i; 2347 2348 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) { 2349 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128"); 2350 return 128; /* cannot check preference with domain name */ 2351 } 2352 2353 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0) 2354 { 2355 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority"); 2356 return 0; /* max preference for home SP network */ 2357 } 2358 2359 for (i = 0; i < cred->num_roaming_partner; i++) { 2360 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i], 2361 bss->anqp->domain_name)) { 2362 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u", 2363 cred->roaming_partner[i].priority); 2364 return cred->roaming_partner[i].priority; 2365 } 2366 } 2367 2368 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128"); 2369 return 128; 2370 } 2371 2372 2373 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s, 2374 struct wpa_bss *selected, 2375 struct wpa_cred *cred) 2376 { 2377 struct wpa_bss *bss; 2378 u8 best_prio, prio; 2379 struct wpa_cred *cred2; 2380 2381 /* 2382 * Check if any other BSS is operated by a more preferred roaming 2383 * partner. 2384 */ 2385 2386 best_prio = roaming_prio(wpa_s, cred, selected); 2387 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS " 2388 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid), 2389 cred->id); 2390 2391 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2392 if (bss == selected) 2393 continue; 2394 cred2 = interworking_credentials_available(wpa_s, bss, NULL); 2395 if (!cred2) 2396 continue; 2397 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) 2398 continue; 2399 prio = roaming_prio(wpa_s, cred2, bss); 2400 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS " 2401 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid), 2402 cred2->id); 2403 if (prio < best_prio) { 2404 int bh1, bh2, load1, load2, conn1, conn2; 2405 bh1 = cred_below_min_backhaul(wpa_s, cred, selected); 2406 load1 = cred_over_max_bss_load(wpa_s, cred, selected); 2407 conn1 = cred_conn_capab_missing(wpa_s, cred, selected); 2408 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss); 2409 load2 = cred_over_max_bss_load(wpa_s, cred2, bss); 2410 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss); 2411 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d", 2412 bh1, load1, conn1, bh2, load2, conn2); 2413 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) { 2414 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid)); 2415 best_prio = prio; 2416 selected = bss; 2417 } 2418 } 2419 } 2420 2421 return selected; 2422 } 2423 2424 2425 static void interworking_select_network(struct wpa_supplicant *wpa_s) 2426 { 2427 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL; 2428 struct wpa_bss *selected2 = NULL, *selected2_home = NULL; 2429 unsigned int count = 0; 2430 const char *type; 2431 int res; 2432 struct wpa_cred *cred, *selected_cred = NULL; 2433 struct wpa_cred *selected_home_cred = NULL; 2434 struct wpa_cred *selected2_cred = NULL; 2435 struct wpa_cred *selected2_home_cred = NULL; 2436 2437 wpa_s->network_select = 0; 2438 2439 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)", 2440 wpa_s->auto_select); 2441 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2442 int excluded = 0; 2443 int bh, bss_load, conn_capab; 2444 cred = interworking_credentials_available(wpa_s, bss, 2445 &excluded); 2446 if (!cred) 2447 continue; 2448 2449 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { 2450 /* 2451 * We currently support only HS 2.0 networks and those 2452 * are required to use WPA2-Enterprise. 2453 */ 2454 wpa_msg(wpa_s, MSG_DEBUG, 2455 "Interworking: Credential match with " MACSTR 2456 " but network does not use RSN", 2457 MAC2STR(bss->bssid)); 2458 continue; 2459 } 2460 if (!excluded) 2461 count++; 2462 res = interworking_home_sp(wpa_s, bss->anqp ? 2463 bss->anqp->domain_name : NULL); 2464 if (res > 0) 2465 type = "home"; 2466 else if (res == 0) 2467 type = "roaming"; 2468 else 2469 type = "unknown"; 2470 bh = cred_below_min_backhaul(wpa_s, cred, bss); 2471 bss_load = cred_over_max_bss_load(wpa_s, cred, bss); 2472 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss); 2473 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d", 2474 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP, 2475 MAC2STR(bss->bssid), type, 2476 bh ? " below_min_backhaul=1" : "", 2477 bss_load ? " over_max_bss_load=1" : "", 2478 conn_capab ? " conn_capab_missing=1" : "", 2479 cred->id, cred->priority, cred->sp_priority); 2480 if (excluded) 2481 continue; 2482 if (wpa_s->auto_select || 2483 (wpa_s->conf->auto_interworking && 2484 wpa_s->auto_network_select)) { 2485 if (bh || bss_load || conn_capab) { 2486 if (selected2_cred == NULL || 2487 cred_prio_cmp(cred, selected2_cred) > 0) { 2488 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2"); 2489 selected2 = bss; 2490 selected2_cred = cred; 2491 } 2492 if (res > 0 && 2493 (selected2_home_cred == NULL || 2494 cred_prio_cmp(cred, selected2_home_cred) > 2495 0)) { 2496 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home"); 2497 selected2_home = bss; 2498 selected2_home_cred = cred; 2499 } 2500 } else { 2501 if (selected_cred == NULL || 2502 cred_prio_cmp(cred, selected_cred) > 0) { 2503 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected"); 2504 selected = bss; 2505 selected_cred = cred; 2506 } 2507 if (res > 0 && 2508 (selected_home_cred == NULL || 2509 cred_prio_cmp(cred, selected_home_cred) > 2510 0)) { 2511 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home"); 2512 selected_home = bss; 2513 selected_home_cred = cred; 2514 } 2515 } 2516 } 2517 } 2518 2519 if (selected_home && selected_home != selected && 2520 selected_home_cred && 2521 (selected_cred == NULL || 2522 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) { 2523 /* Prefer network operated by the Home SP */ 2524 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home"); 2525 selected = selected_home; 2526 selected_cred = selected_home_cred; 2527 } 2528 2529 if (!selected) { 2530 if (selected2_home) { 2531 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected"); 2532 selected = selected2_home; 2533 selected_cred = selected2_home_cred; 2534 } else if (selected2) { 2535 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected"); 2536 selected = selected2; 2537 selected_cred = selected2_cred; 2538 } 2539 } 2540 2541 if (count == 0) { 2542 /* 2543 * No matching network was found based on configured 2544 * credentials. Check whether any of the enabled network blocks 2545 * have matching APs. 2546 */ 2547 if (interworking_find_network_match(wpa_s)) { 2548 wpa_msg(wpa_s, MSG_DEBUG, 2549 "Interworking: Possible BSS match for enabled network configurations"); 2550 if (wpa_s->auto_select) { 2551 interworking_reconnect(wpa_s); 2552 return; 2553 } 2554 } 2555 2556 if (wpa_s->auto_network_select) { 2557 wpa_msg(wpa_s, MSG_DEBUG, 2558 "Interworking: Continue scanning after ANQP fetch"); 2559 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 2560 0); 2561 return; 2562 } 2563 2564 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network " 2565 "with matching credentials found"); 2566 if (wpa_s->wpa_state == WPA_SCANNING) 2567 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2568 } 2569 2570 if (selected) { 2571 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR, 2572 MAC2STR(selected->bssid)); 2573 selected = pick_best_roaming_partner(wpa_s, selected, 2574 selected_cred); 2575 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR 2576 " (after best roaming partner selection)", 2577 MAC2STR(selected->bssid)); 2578 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR, 2579 MAC2STR(selected->bssid)); 2580 interworking_connect(wpa_s, selected, 0); 2581 } else if (wpa_s->wpa_state == WPA_SCANNING) 2582 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2583 } 2584 2585 2586 static struct wpa_bss_anqp * 2587 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 2588 { 2589 struct wpa_bss *other; 2590 2591 if (is_zero_ether_addr(bss->hessid)) 2592 return NULL; /* Cannot be in the same homegenous ESS */ 2593 2594 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) { 2595 if (other == bss) 2596 continue; 2597 if (other->anqp == NULL) 2598 continue; 2599 if (other->anqp->roaming_consortium == NULL && 2600 other->anqp->nai_realm == NULL && 2601 other->anqp->anqp_3gpp == NULL && 2602 other->anqp->domain_name == NULL) 2603 continue; 2604 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED)) 2605 continue; 2606 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0) 2607 continue; 2608 if (bss->ssid_len != other->ssid_len || 2609 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0) 2610 continue; 2611 2612 wpa_msg(wpa_s, MSG_DEBUG, 2613 "Interworking: Share ANQP data with already fetched BSSID " 2614 MACSTR " and " MACSTR, 2615 MAC2STR(other->bssid), MAC2STR(bss->bssid)); 2616 other->anqp->users++; 2617 return other->anqp; 2618 } 2619 2620 return NULL; 2621 } 2622 2623 2624 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s) 2625 { 2626 struct wpa_bss *bss; 2627 int found = 0; 2628 const u8 *ie; 2629 2630 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - " 2631 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d", 2632 wpa_s->fetch_anqp_in_progress, 2633 wpa_s->fetch_osu_icon_in_progress); 2634 2635 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) { 2636 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch"); 2637 return; 2638 } 2639 2640 #ifdef CONFIG_HS20 2641 if (wpa_s->fetch_osu_icon_in_progress) { 2642 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)"); 2643 hs20_next_osu_icon(wpa_s); 2644 return; 2645 } 2646 #endif /* CONFIG_HS20 */ 2647 2648 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2649 if (!(bss->caps & IEEE80211_CAP_ESS)) 2650 continue; 2651 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB); 2652 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80)) 2653 continue; /* AP does not support Interworking */ 2654 if (disallowed_bssid(wpa_s, bss->bssid) || 2655 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) 2656 continue; /* Disallowed BSS */ 2657 2658 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) { 2659 if (bss->anqp == NULL) { 2660 bss->anqp = interworking_match_anqp_info(wpa_s, 2661 bss); 2662 if (bss->anqp) { 2663 /* Shared data already fetched */ 2664 continue; 2665 } 2666 bss->anqp = wpa_bss_anqp_alloc(); 2667 if (bss->anqp == NULL) 2668 break; 2669 } 2670 found++; 2671 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED; 2672 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for " 2673 MACSTR, MAC2STR(bss->bssid)); 2674 interworking_anqp_send_req(wpa_s, bss); 2675 break; 2676 } 2677 } 2678 2679 if (found == 0) { 2680 #ifdef CONFIG_HS20 2681 if (wpa_s->fetch_osu_info) { 2682 if (wpa_s->num_prov_found == 0 && 2683 wpa_s->fetch_osu_waiting_scan && 2684 wpa_s->num_osu_scans < 3) { 2685 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again"); 2686 hs20_start_osu_scan(wpa_s); 2687 return; 2688 } 2689 wpa_printf(MSG_DEBUG, "Interworking: Next icon"); 2690 hs20_osu_icon_fetch(wpa_s); 2691 return; 2692 } 2693 #endif /* CONFIG_HS20 */ 2694 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed"); 2695 wpa_s->fetch_anqp_in_progress = 0; 2696 if (wpa_s->network_select) 2697 interworking_select_network(wpa_s); 2698 } 2699 } 2700 2701 2702 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s) 2703 { 2704 struct wpa_bss *bss; 2705 2706 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) 2707 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED; 2708 2709 wpa_s->fetch_anqp_in_progress = 1; 2710 2711 /* 2712 * Start actual ANQP operation from eloop call to make sure the loop 2713 * does not end up using excessive recursion. 2714 */ 2715 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL); 2716 } 2717 2718 2719 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s) 2720 { 2721 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) 2722 return 0; 2723 2724 wpa_s->network_select = 0; 2725 wpa_s->fetch_all_anqp = 1; 2726 wpa_s->fetch_osu_info = 0; 2727 2728 interworking_start_fetch_anqp(wpa_s); 2729 2730 return 0; 2731 } 2732 2733 2734 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s) 2735 { 2736 if (!wpa_s->fetch_anqp_in_progress) 2737 return; 2738 2739 wpa_s->fetch_anqp_in_progress = 0; 2740 } 2741 2742 2743 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, 2744 u16 info_ids[], size_t num_ids, u32 subtypes, 2745 u32 mbo_subtypes) 2746 { 2747 struct wpabuf *buf; 2748 struct wpabuf *extra_buf = NULL; 2749 int ret = 0; 2750 int freq; 2751 struct wpa_bss *bss; 2752 int res; 2753 2754 bss = wpa_bss_get_bssid(wpa_s, dst); 2755 if (!bss) { 2756 wpa_printf(MSG_WARNING, 2757 "ANQP: Cannot send query to unknown BSS " 2758 MACSTR, MAC2STR(dst)); 2759 return -1; 2760 } 2761 2762 wpa_bss_anqp_unshare_alloc(bss); 2763 freq = bss->freq; 2764 2765 wpa_msg(wpa_s, MSG_DEBUG, 2766 "ANQP: Query Request to " MACSTR " for %u id(s)", 2767 MAC2STR(dst), (unsigned int) num_ids); 2768 2769 #ifdef CONFIG_HS20 2770 if (subtypes != 0) { 2771 extra_buf = wpabuf_alloc(100); 2772 if (extra_buf == NULL) 2773 return -1; 2774 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf); 2775 } 2776 #endif /* CONFIG_HS20 */ 2777 2778 #ifdef CONFIG_MBO 2779 if (mbo_subtypes) { 2780 struct wpabuf *mbo; 2781 2782 mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes); 2783 if (mbo) { 2784 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) { 2785 wpabuf_free(extra_buf); 2786 wpabuf_free(mbo); 2787 return -1; 2788 } 2789 wpabuf_put_buf(extra_buf, mbo); 2790 wpabuf_free(mbo); 2791 } 2792 } 2793 #endif /* CONFIG_MBO */ 2794 2795 buf = anqp_build_req(info_ids, num_ids, extra_buf); 2796 wpabuf_free(extra_buf); 2797 if (buf == NULL) 2798 return -1; 2799 2800 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, anqp_resp_cb, wpa_s); 2801 if (res < 0) { 2802 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request"); 2803 wpabuf_free(buf); 2804 ret = -1; 2805 } else { 2806 wpa_msg(wpa_s, MSG_DEBUG, 2807 "ANQP: Query started with dialog token %u", res); 2808 } 2809 2810 return ret; 2811 } 2812 2813 2814 static void anqp_add_extra(struct wpa_supplicant *wpa_s, 2815 struct wpa_bss_anqp *anqp, u16 info_id, 2816 const u8 *data, size_t slen) 2817 { 2818 struct wpa_bss_anqp_elem *tmp, *elem = NULL; 2819 2820 if (!anqp) 2821 return; 2822 2823 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem, 2824 list) { 2825 if (tmp->infoid == info_id) { 2826 elem = tmp; 2827 break; 2828 } 2829 } 2830 2831 if (!elem) { 2832 elem = os_zalloc(sizeof(*elem)); 2833 if (!elem) 2834 return; 2835 elem->infoid = info_id; 2836 dl_list_add(&anqp->anqp_elems, &elem->list); 2837 } else { 2838 wpabuf_free(elem->payload); 2839 } 2840 2841 elem->payload = wpabuf_alloc_copy(data, slen); 2842 if (!elem->payload) { 2843 dl_list_del(&elem->list); 2844 os_free(elem); 2845 } 2846 } 2847 2848 2849 static void interworking_parse_venue_url(struct wpa_supplicant *wpa_s, 2850 const u8 *data, size_t len) 2851 { 2852 const u8 *pos = data, *end = data + len; 2853 char url[255]; 2854 2855 while (end - pos >= 2) { 2856 u8 slen, num; 2857 2858 slen = *pos++; 2859 if (slen < 1 || slen > end - pos) { 2860 wpa_printf(MSG_DEBUG, 2861 "ANQP: Truncated Venue URL Duple field"); 2862 return; 2863 } 2864 2865 num = *pos++; 2866 os_memcpy(url, pos, slen - 1); 2867 url[slen - 1] = '\0'; 2868 wpa_msg(wpa_s, MSG_INFO, RX_VENUE_URL "%u %s", num, url); 2869 pos += slen - 1; 2870 } 2871 } 2872 2873 2874 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s, 2875 struct wpa_bss *bss, const u8 *sa, 2876 u16 info_id, 2877 const u8 *data, size_t slen, 2878 u8 dialog_token) 2879 { 2880 const u8 *pos = data; 2881 struct wpa_bss_anqp *anqp = NULL; 2882 u8 type; 2883 2884 if (bss) 2885 anqp = bss->anqp; 2886 2887 switch (info_id) { 2888 case ANQP_CAPABILITY_LIST: 2889 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2890 " ANQP Capability list", MAC2STR(sa)); 2891 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list", 2892 pos, slen); 2893 if (anqp) { 2894 wpabuf_free(anqp->capability_list); 2895 anqp->capability_list = wpabuf_alloc_copy(pos, slen); 2896 } 2897 break; 2898 case ANQP_VENUE_NAME: 2899 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2900 " Venue Name", MAC2STR(sa)); 2901 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen); 2902 if (anqp) { 2903 wpabuf_free(anqp->venue_name); 2904 anqp->venue_name = wpabuf_alloc_copy(pos, slen); 2905 } 2906 break; 2907 case ANQP_NETWORK_AUTH_TYPE: 2908 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2909 " Network Authentication Type information", 2910 MAC2STR(sa)); 2911 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication " 2912 "Type", pos, slen); 2913 if (anqp) { 2914 wpabuf_free(anqp->network_auth_type); 2915 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen); 2916 } 2917 break; 2918 case ANQP_ROAMING_CONSORTIUM: 2919 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2920 " Roaming Consortium list", MAC2STR(sa)); 2921 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium", 2922 pos, slen); 2923 if (anqp) { 2924 wpabuf_free(anqp->roaming_consortium); 2925 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen); 2926 } 2927 break; 2928 case ANQP_IP_ADDR_TYPE_AVAILABILITY: 2929 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2930 " IP Address Type Availability information", 2931 MAC2STR(sa)); 2932 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability", 2933 pos, slen); 2934 if (anqp) { 2935 wpabuf_free(anqp->ip_addr_type_availability); 2936 anqp->ip_addr_type_availability = 2937 wpabuf_alloc_copy(pos, slen); 2938 } 2939 break; 2940 case ANQP_NAI_REALM: 2941 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2942 " NAI Realm list", MAC2STR(sa)); 2943 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen); 2944 if (anqp) { 2945 wpabuf_free(anqp->nai_realm); 2946 anqp->nai_realm = wpabuf_alloc_copy(pos, slen); 2947 } 2948 break; 2949 case ANQP_3GPP_CELLULAR_NETWORK: 2950 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2951 " 3GPP Cellular Network information", MAC2STR(sa)); 2952 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network", 2953 pos, slen); 2954 if (anqp) { 2955 wpabuf_free(anqp->anqp_3gpp); 2956 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen); 2957 } 2958 break; 2959 case ANQP_DOMAIN_NAME: 2960 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2961 " Domain Name list", MAC2STR(sa)); 2962 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen); 2963 if (anqp) { 2964 wpabuf_free(anqp->domain_name); 2965 anqp->domain_name = wpabuf_alloc_copy(pos, slen); 2966 } 2967 break; 2968 #ifdef CONFIG_FILS 2969 case ANQP_FILS_REALM_INFO: 2970 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2971 " FILS Realm Information", MAC2STR(sa)); 2972 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: FILS Realm Information", 2973 pos, slen); 2974 if (anqp) { 2975 wpabuf_free(anqp->fils_realm_info); 2976 anqp->fils_realm_info = wpabuf_alloc_copy(pos, slen); 2977 } 2978 break; 2979 #endif /* CONFIG_FILS */ 2980 case ANQP_VENUE_URL: 2981 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR " Venue URL", 2982 MAC2STR(sa)); 2983 anqp_add_extra(wpa_s, anqp, info_id, pos, slen); 2984 2985 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) { 2986 wpa_printf(MSG_DEBUG, 2987 "ANQP: Ignore Venue URL since PMF was not enabled"); 2988 break; 2989 } 2990 interworking_parse_venue_url(wpa_s, pos, slen); 2991 break; 2992 case ANQP_VENDOR_SPECIFIC: 2993 if (slen < 3) 2994 return; 2995 2996 switch (WPA_GET_BE24(pos)) { 2997 case OUI_WFA: 2998 pos += 3; 2999 slen -= 3; 3000 3001 if (slen < 1) 3002 return; 3003 type = *pos++; 3004 slen--; 3005 3006 switch (type) { 3007 #ifdef CONFIG_HS20 3008 case HS20_ANQP_OUI_TYPE: 3009 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa, 3010 pos, slen, 3011 dialog_token); 3012 break; 3013 #endif /* CONFIG_HS20 */ 3014 #ifdef CONFIG_MBO 3015 case MBO_ANQP_OUI_TYPE: 3016 mbo_parse_rx_anqp_resp(wpa_s, bss, sa, 3017 pos, slen); 3018 break; 3019 #endif /* CONFIG_MBO */ 3020 default: 3021 wpa_msg(wpa_s, MSG_DEBUG, 3022 "ANQP: Unsupported ANQP vendor type %u", 3023 type); 3024 break; 3025 } 3026 break; 3027 default: 3028 wpa_msg(wpa_s, MSG_DEBUG, 3029 "Interworking: Unsupported vendor-specific ANQP OUI %06x", 3030 WPA_GET_BE24(pos)); 3031 return; 3032 } 3033 break; 3034 default: 3035 wpa_msg(wpa_s, MSG_DEBUG, 3036 "Interworking: Unsupported ANQP Info ID %u", info_id); 3037 anqp_add_extra(wpa_s, anqp, info_id, data, slen); 3038 break; 3039 } 3040 } 3041 3042 3043 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token, 3044 enum gas_query_result result, 3045 const struct wpabuf *adv_proto, 3046 const struct wpabuf *resp, u16 status_code) 3047 { 3048 struct wpa_supplicant *wpa_s = ctx; 3049 const u8 *pos; 3050 const u8 *end; 3051 u16 info_id; 3052 u16 slen; 3053 struct wpa_bss *bss = NULL, *tmp; 3054 const char *anqp_result = "SUCCESS"; 3055 3056 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR 3057 " dialog_token=%u result=%d status_code=%u", 3058 MAC2STR(dst), dialog_token, result, status_code); 3059 if (result != GAS_QUERY_SUCCESS) { 3060 #ifdef CONFIG_HS20 3061 if (wpa_s->fetch_osu_icon_in_progress) 3062 hs20_icon_fetch_failed(wpa_s); 3063 #endif /* CONFIG_HS20 */ 3064 anqp_result = "FAILURE"; 3065 goto out; 3066 } 3067 3068 pos = wpabuf_head(adv_proto); 3069 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO || 3070 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) { 3071 wpa_msg(wpa_s, MSG_DEBUG, 3072 "ANQP: Unexpected Advertisement Protocol in response"); 3073 #ifdef CONFIG_HS20 3074 if (wpa_s->fetch_osu_icon_in_progress) 3075 hs20_icon_fetch_failed(wpa_s); 3076 #endif /* CONFIG_HS20 */ 3077 anqp_result = "INVALID_FRAME"; 3078 goto out; 3079 } 3080 3081 /* 3082 * If possible, select the BSS entry based on which BSS entry was used 3083 * for the request. This can help in cases where multiple BSS entries 3084 * may exist for the same AP. 3085 */ 3086 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) { 3087 if (tmp == wpa_s->interworking_gas_bss && 3088 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) { 3089 bss = tmp; 3090 break; 3091 } 3092 } 3093 if (bss == NULL) 3094 bss = wpa_bss_get_bssid(wpa_s, dst); 3095 3096 pos = wpabuf_head(resp); 3097 end = pos + wpabuf_len(resp); 3098 3099 while (pos < end) { 3100 unsigned int left = end - pos; 3101 3102 if (left < 4) { 3103 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element"); 3104 anqp_result = "INVALID_FRAME"; 3105 goto out_parse_done; 3106 } 3107 info_id = WPA_GET_LE16(pos); 3108 pos += 2; 3109 slen = WPA_GET_LE16(pos); 3110 pos += 2; 3111 left -= 4; 3112 if (left < slen) { 3113 wpa_msg(wpa_s, MSG_DEBUG, 3114 "ANQP: Invalid element length for Info ID %u", 3115 info_id); 3116 anqp_result = "INVALID_FRAME"; 3117 goto out_parse_done; 3118 } 3119 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos, 3120 slen, dialog_token); 3121 pos += slen; 3122 } 3123 3124 out_parse_done: 3125 #ifdef CONFIG_HS20 3126 hs20_notify_parse_done(wpa_s); 3127 #endif /* CONFIG_HS20 */ 3128 out: 3129 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s", 3130 MAC2STR(dst), anqp_result); 3131 } 3132 3133 3134 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s, 3135 struct wpa_scan_results *scan_res) 3136 { 3137 wpa_msg(wpa_s, MSG_DEBUG, 3138 "Interworking: Scan results available - start ANQP fetch"); 3139 interworking_start_fetch_anqp(wpa_s); 3140 } 3141 3142 3143 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select, 3144 int *freqs) 3145 { 3146 interworking_stop_fetch_anqp(wpa_s); 3147 wpa_s->network_select = 1; 3148 wpa_s->auto_network_select = 0; 3149 wpa_s->auto_select = !!auto_select; 3150 wpa_s->fetch_all_anqp = 0; 3151 wpa_s->fetch_osu_info = 0; 3152 wpa_msg(wpa_s, MSG_DEBUG, 3153 "Interworking: Start scan for network selection"); 3154 wpa_s->scan_res_handler = interworking_scan_res_handler; 3155 wpa_s->normal_scans = 0; 3156 wpa_s->scan_req = MANUAL_SCAN_REQ; 3157 os_free(wpa_s->manual_scan_freqs); 3158 wpa_s->manual_scan_freqs = freqs; 3159 wpa_s->after_wps = 0; 3160 wpa_s->known_wps_freq = 0; 3161 wpa_supplicant_req_scan(wpa_s, 0, 0); 3162 3163 return 0; 3164 } 3165 3166 3167 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token, 3168 enum gas_query_result result, 3169 const struct wpabuf *adv_proto, 3170 const struct wpabuf *resp, u16 status_code) 3171 { 3172 struct wpa_supplicant *wpa_s = ctx; 3173 struct wpabuf *n; 3174 3175 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR 3176 " dialog_token=%d status_code=%d resp_len=%d", 3177 MAC2STR(addr), dialog_token, status_code, 3178 resp ? (int) wpabuf_len(resp) : -1); 3179 if (!resp) 3180 return; 3181 3182 n = wpabuf_dup(resp); 3183 if (n == NULL) 3184 return; 3185 wpabuf_free(wpa_s->prev_gas_resp); 3186 wpa_s->prev_gas_resp = wpa_s->last_gas_resp; 3187 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN); 3188 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token; 3189 wpa_s->last_gas_resp = n; 3190 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN); 3191 wpa_s->last_gas_dialog_token = dialog_token; 3192 } 3193 3194 3195 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst, 3196 const struct wpabuf *adv_proto, 3197 const struct wpabuf *query) 3198 { 3199 struct wpabuf *buf; 3200 int ret = 0; 3201 int freq; 3202 struct wpa_bss *bss; 3203 int res; 3204 size_t len; 3205 u8 query_resp_len_limit = 0; 3206 3207 freq = wpa_s->assoc_freq; 3208 bss = wpa_bss_get_bssid(wpa_s, dst); 3209 if (bss) 3210 freq = bss->freq; 3211 if (freq <= 0) 3212 return -1; 3213 3214 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)", 3215 MAC2STR(dst), freq); 3216 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto); 3217 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query); 3218 3219 len = 3 + wpabuf_len(adv_proto) + 2; 3220 if (query) 3221 len += wpabuf_len(query); 3222 buf = gas_build_initial_req(0, len); 3223 if (buf == NULL) 3224 return -1; 3225 3226 /* Advertisement Protocol IE */ 3227 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO); 3228 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */ 3229 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f); 3230 wpabuf_put_buf(buf, adv_proto); 3231 3232 /* GAS Query */ 3233 if (query) { 3234 wpabuf_put_le16(buf, wpabuf_len(query)); 3235 wpabuf_put_buf(buf, query); 3236 } else 3237 wpabuf_put_le16(buf, 0); 3238 3239 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, gas_resp_cb, wpa_s); 3240 if (res < 0) { 3241 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request"); 3242 wpabuf_free(buf); 3243 ret = -1; 3244 } else 3245 wpa_msg(wpa_s, MSG_DEBUG, 3246 "GAS: Query started with dialog token %u", res); 3247 3248 return ret; 3249 } 3250