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, "ieee80211w", "1", 0) < 0 || 962 wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0) 963 return -1; 964 return 0; 965 } 966 967 968 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s, 969 struct wpa_cred *cred, 970 struct wpa_bss *bss, int only_add) 971 { 972 #ifdef INTERWORKING_3GPP 973 struct wpa_ssid *ssid; 974 int eap_type; 975 int res; 976 char prefix; 977 978 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) 979 return -1; 980 981 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR 982 " (3GPP)", MAC2STR(bss->bssid)); 983 984 if (already_connected(wpa_s, cred, bss)) { 985 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 986 MAC2STR(bss->bssid)); 987 return wpa_s->current_ssid->id; 988 } 989 990 remove_duplicate_network(wpa_s, cred, bss); 991 992 ssid = wpa_config_add_network(wpa_s->conf); 993 if (ssid == NULL) 994 return -1; 995 ssid->parent_cred = cred; 996 997 wpas_notify_network_added(wpa_s, ssid); 998 wpa_config_set_network_defaults(ssid); 999 ssid->priority = cred->priority; 1000 ssid->temporary = 1; 1001 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1002 if (ssid->ssid == NULL) 1003 goto fail; 1004 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1005 ssid->ssid_len = bss->ssid_len; 1006 ssid->eap.sim_num = cred->sim_num; 1007 1008 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1009 goto fail; 1010 1011 eap_type = EAP_TYPE_SIM; 1012 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard)) 1013 eap_type = EAP_TYPE_AKA; 1014 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) { 1015 if (cred->eap_method[0].method == EAP_TYPE_SIM || 1016 cred->eap_method[0].method == EAP_TYPE_AKA || 1017 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME) 1018 eap_type = cred->eap_method[0].method; 1019 } 1020 1021 switch (eap_type) { 1022 case EAP_TYPE_SIM: 1023 prefix = '1'; 1024 res = wpa_config_set(ssid, "eap", "SIM", 0); 1025 break; 1026 case EAP_TYPE_AKA: 1027 prefix = '0'; 1028 res = wpa_config_set(ssid, "eap", "AKA", 0); 1029 break; 1030 case EAP_TYPE_AKA_PRIME: 1031 prefix = '6'; 1032 res = wpa_config_set(ssid, "eap", "AKA'", 0); 1033 break; 1034 default: 1035 res = -1; 1036 break; 1037 } 1038 if (res < 0) { 1039 wpa_msg(wpa_s, MSG_DEBUG, 1040 "Selected EAP method (%d) not supported", eap_type); 1041 goto fail; 1042 } 1043 1044 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) { 1045 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI"); 1046 goto fail; 1047 } 1048 1049 if (cred->milenage && cred->milenage[0]) { 1050 if (wpa_config_set_quoted(ssid, "password", 1051 cred->milenage) < 0) 1052 goto fail; 1053 } else if (cred->pcsc) { 1054 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0) 1055 goto fail; 1056 if (wpa_s->conf->pcsc_pin && 1057 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin) 1058 < 0) 1059 goto fail; 1060 } 1061 1062 wpa_s->next_ssid = ssid; 1063 wpa_config_update_prio_list(wpa_s->conf); 1064 if (!only_add) 1065 interworking_reconnect(wpa_s); 1066 1067 return ssid->id; 1068 1069 fail: 1070 wpas_notify_network_removed(wpa_s, ssid); 1071 wpa_config_remove_network(wpa_s->conf, ssid->id); 1072 #endif /* INTERWORKING_3GPP */ 1073 return -1; 1074 } 1075 1076 1077 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id, 1078 size_t rc_len) 1079 { 1080 const u8 *pos, *end; 1081 u8 lens; 1082 1083 if (ie == NULL) 1084 return 0; 1085 1086 pos = ie + 2; 1087 end = ie + 2 + ie[1]; 1088 1089 /* Roaming Consortium element: 1090 * Number of ANQP OIs 1091 * OI #1 and #2 lengths 1092 * OI #1, [OI #2], [OI #3] 1093 */ 1094 1095 if (end - pos < 2) 1096 return 0; 1097 1098 pos++; /* skip Number of ANQP OIs */ 1099 lens = *pos++; 1100 if ((lens & 0x0f) + (lens >> 4) > end - pos) 1101 return 0; 1102 1103 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) 1104 return 1; 1105 pos += lens & 0x0f; 1106 1107 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) 1108 return 1; 1109 pos += lens >> 4; 1110 1111 if (pos < end && (size_t) (end - pos) == rc_len && 1112 os_memcmp(pos, rc_id, rc_len) == 0) 1113 return 1; 1114 1115 return 0; 1116 } 1117 1118 1119 static int roaming_consortium_anqp_match(const struct wpabuf *anqp, 1120 const u8 *rc_id, size_t rc_len) 1121 { 1122 const u8 *pos, *end; 1123 u8 len; 1124 1125 if (anqp == NULL) 1126 return 0; 1127 1128 pos = wpabuf_head(anqp); 1129 end = pos + wpabuf_len(anqp); 1130 1131 /* Set of <OI Length, OI> duples */ 1132 while (pos < end) { 1133 len = *pos++; 1134 if (len > end - pos) 1135 break; 1136 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0) 1137 return 1; 1138 pos += len; 1139 } 1140 1141 return 0; 1142 } 1143 1144 1145 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp, 1146 const u8 *rc_id, size_t rc_len) 1147 { 1148 return roaming_consortium_element_match(ie, rc_id, rc_len) || 1149 roaming_consortium_anqp_match(anqp, rc_id, rc_len); 1150 } 1151 1152 1153 static int cred_roaming_consortiums_match(const u8 *ie, 1154 const struct wpabuf *anqp, 1155 const struct wpa_cred *cred) 1156 { 1157 unsigned int i; 1158 1159 for (i = 0; i < cred->num_roaming_consortiums; i++) { 1160 if (roaming_consortium_match(ie, anqp, 1161 cred->roaming_consortiums[i], 1162 cred->roaming_consortiums_len[i])) 1163 return 1; 1164 } 1165 1166 return 0; 1167 } 1168 1169 1170 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss) 1171 { 1172 const u8 *ie; 1173 1174 if (cred->required_roaming_consortium_len == 0) 1175 return 0; 1176 1177 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1178 1179 if (ie == NULL && 1180 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL)) 1181 return 1; 1182 1183 return !roaming_consortium_match(ie, 1184 bss->anqp ? 1185 bss->anqp->roaming_consortium : NULL, 1186 cred->required_roaming_consortium, 1187 cred->required_roaming_consortium_len); 1188 } 1189 1190 1191 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss) 1192 { 1193 size_t i; 1194 1195 if (!cred->excluded_ssid) 1196 return 0; 1197 1198 for (i = 0; i < cred->num_excluded_ssid; i++) { 1199 struct excluded_ssid *e = &cred->excluded_ssid[i]; 1200 if (bss->ssid_len == e->ssid_len && 1201 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0) 1202 return 1; 1203 } 1204 1205 return 0; 1206 } 1207 1208 1209 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s, 1210 struct wpa_cred *cred, struct wpa_bss *bss) 1211 { 1212 #ifdef CONFIG_HS20 1213 int res; 1214 unsigned int dl_bandwidth, ul_bandwidth; 1215 const u8 *wan; 1216 u8 wan_info, dl_load, ul_load; 1217 u16 lmd; 1218 u32 ul_speed, dl_speed; 1219 1220 if (!cred->min_dl_bandwidth_home && 1221 !cred->min_ul_bandwidth_home && 1222 !cred->min_dl_bandwidth_roaming && 1223 !cred->min_ul_bandwidth_roaming) 1224 return 0; /* No bandwidth constraint specified */ 1225 1226 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL) 1227 return 0; /* No WAN Metrics known - ignore constraint */ 1228 1229 wan = wpabuf_head(bss->anqp->hs20_wan_metrics); 1230 wan_info = wan[0]; 1231 if (wan_info & BIT(3)) 1232 return 1; /* WAN link at capacity */ 1233 lmd = WPA_GET_LE16(wan + 11); 1234 if (lmd == 0) 1235 return 0; /* Downlink/Uplink Load was not measured */ 1236 dl_speed = WPA_GET_LE32(wan + 1); 1237 ul_speed = WPA_GET_LE32(wan + 5); 1238 dl_load = wan[9]; 1239 ul_load = wan[10]; 1240 1241 if (dl_speed >= 0xffffff) 1242 dl_bandwidth = dl_speed / 255 * (255 - dl_load); 1243 else 1244 dl_bandwidth = dl_speed * (255 - dl_load) / 255; 1245 1246 if (ul_speed >= 0xffffff) 1247 ul_bandwidth = ul_speed / 255 * (255 - ul_load); 1248 else 1249 ul_bandwidth = ul_speed * (255 - ul_load) / 255; 1250 1251 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? 1252 bss->anqp->domain_name : NULL); 1253 if (res > 0) { 1254 if (cred->min_dl_bandwidth_home > dl_bandwidth) 1255 return 1; 1256 if (cred->min_ul_bandwidth_home > ul_bandwidth) 1257 return 1; 1258 } else { 1259 if (cred->min_dl_bandwidth_roaming > dl_bandwidth) 1260 return 1; 1261 if (cred->min_ul_bandwidth_roaming > ul_bandwidth) 1262 return 1; 1263 } 1264 #endif /* CONFIG_HS20 */ 1265 1266 return 0; 1267 } 1268 1269 1270 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s, 1271 struct wpa_cred *cred, struct wpa_bss *bss) 1272 { 1273 const u8 *ie; 1274 int res; 1275 1276 if (!cred->max_bss_load) 1277 return 0; /* No BSS Load constraint specified */ 1278 1279 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD); 1280 if (ie == NULL || ie[1] < 3) 1281 return 0; /* No BSS Load advertised */ 1282 1283 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? 1284 bss->anqp->domain_name : NULL); 1285 if (res <= 0) 1286 return 0; /* Not a home network */ 1287 1288 return ie[4] > cred->max_bss_load; 1289 } 1290 1291 1292 #ifdef CONFIG_HS20 1293 1294 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto) 1295 { 1296 while (end - pos >= 4) { 1297 if (pos[0] == proto && pos[3] == 1 /* Open */) 1298 return 1; 1299 pos += 4; 1300 } 1301 1302 return 0; 1303 } 1304 1305 1306 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto, 1307 u16 port) 1308 { 1309 while (end - pos >= 4) { 1310 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port && 1311 pos[3] == 1 /* Open */) 1312 return 1; 1313 pos += 4; 1314 } 1315 1316 return 0; 1317 } 1318 1319 #endif /* CONFIG_HS20 */ 1320 1321 1322 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s, 1323 struct wpa_cred *cred, struct wpa_bss *bss) 1324 { 1325 #ifdef CONFIG_HS20 1326 int res; 1327 const u8 *capab, *end; 1328 unsigned int i, j; 1329 int *ports; 1330 1331 if (!cred->num_req_conn_capab) 1332 return 0; /* No connection capability constraint specified */ 1333 1334 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL) 1335 return 0; /* No Connection Capability known - ignore constraint 1336 */ 1337 1338 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ? 1339 bss->anqp->domain_name : NULL); 1340 if (res > 0) 1341 return 0; /* No constraint in home network */ 1342 1343 capab = wpabuf_head(bss->anqp->hs20_connection_capability); 1344 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability); 1345 1346 for (i = 0; i < cred->num_req_conn_capab; i++) { 1347 ports = cred->req_conn_capab_port[i]; 1348 if (!ports) { 1349 if (!has_proto_match(capab, end, 1350 cred->req_conn_capab_proto[i])) 1351 return 1; 1352 } else { 1353 for (j = 0; ports[j] > -1; j++) { 1354 if (!has_proto_port_match( 1355 capab, end, 1356 cred->req_conn_capab_proto[i], 1357 ports[j])) 1358 return 1; 1359 } 1360 } 1361 } 1362 #endif /* CONFIG_HS20 */ 1363 1364 return 0; 1365 } 1366 1367 1368 static struct wpa_cred * interworking_credentials_available_roaming_consortium( 1369 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 1370 int *excluded) 1371 { 1372 struct wpa_cred *cred, *selected = NULL; 1373 const u8 *ie; 1374 const struct wpabuf *anqp; 1375 int is_excluded = 0; 1376 1377 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1378 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL; 1379 1380 if (!ie && !anqp) 1381 return NULL; 1382 1383 if (wpa_s->conf->cred == NULL) 1384 return NULL; 1385 1386 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 1387 if (cred->roaming_consortium_len == 0 && 1388 cred->num_roaming_consortiums == 0) 1389 continue; 1390 1391 if ((cred->roaming_consortium_len == 0 || 1392 !roaming_consortium_match(ie, anqp, 1393 cred->roaming_consortium, 1394 cred->roaming_consortium_len)) && 1395 !cred_roaming_consortiums_match(ie, anqp, cred)) 1396 continue; 1397 1398 if (cred_no_required_oi_match(cred, bss)) 1399 continue; 1400 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss)) 1401 continue; 1402 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss)) 1403 continue; 1404 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss)) 1405 continue; 1406 if (cred_excluded_ssid(cred, bss)) { 1407 if (excluded == NULL) 1408 continue; 1409 if (selected == NULL) { 1410 selected = cred; 1411 is_excluded = 1; 1412 } 1413 } else { 1414 if (selected == NULL || is_excluded || 1415 cred_prio_cmp(selected, cred) < 0) { 1416 selected = cred; 1417 is_excluded = 0; 1418 } 1419 } 1420 } 1421 1422 if (excluded) 1423 *excluded = is_excluded; 1424 1425 return selected; 1426 } 1427 1428 1429 static int interworking_set_eap_params(struct wpa_ssid *ssid, 1430 struct wpa_cred *cred, int ttls) 1431 { 1432 if (cred->eap_method) { 1433 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF && 1434 cred->eap_method->method == EAP_TYPE_TTLS; 1435 1436 os_free(ssid->eap.eap_methods); 1437 ssid->eap.eap_methods = 1438 os_malloc(sizeof(struct eap_method_type) * 2); 1439 if (ssid->eap.eap_methods == NULL) 1440 return -1; 1441 os_memcpy(ssid->eap.eap_methods, cred->eap_method, 1442 sizeof(*cred->eap_method)); 1443 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF; 1444 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE; 1445 } 1446 1447 if (ttls && cred->username && cred->username[0]) { 1448 const char *pos; 1449 char *anon; 1450 /* Use anonymous NAI in Phase 1 */ 1451 pos = os_strchr(cred->username, '@'); 1452 if (pos) { 1453 size_t buflen = 9 + os_strlen(pos) + 1; 1454 anon = os_malloc(buflen); 1455 if (anon == NULL) 1456 return -1; 1457 os_snprintf(anon, buflen, "anonymous%s", pos); 1458 } else if (cred->realm) { 1459 size_t buflen = 10 + os_strlen(cred->realm) + 1; 1460 anon = os_malloc(buflen); 1461 if (anon == NULL) 1462 return -1; 1463 os_snprintf(anon, buflen, "anonymous@%s", cred->realm); 1464 } else { 1465 anon = os_strdup("anonymous"); 1466 if (anon == NULL) 1467 return -1; 1468 } 1469 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) < 1470 0) { 1471 os_free(anon); 1472 return -1; 1473 } 1474 os_free(anon); 1475 } 1476 1477 if (!ttls && cred->username && cred->username[0] && cred->realm && 1478 !os_strchr(cred->username, '@')) { 1479 char *id; 1480 size_t buflen; 1481 int res; 1482 1483 buflen = os_strlen(cred->username) + 1 + 1484 os_strlen(cred->realm) + 1; 1485 1486 id = os_malloc(buflen); 1487 if (!id) 1488 return -1; 1489 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm); 1490 res = wpa_config_set_quoted(ssid, "identity", id); 1491 os_free(id); 1492 if (res < 0) 1493 return -1; 1494 } else if (cred->username && cred->username[0] && 1495 wpa_config_set_quoted(ssid, "identity", cred->username) < 0) 1496 return -1; 1497 1498 if (cred->password && cred->password[0]) { 1499 if (cred->ext_password && 1500 wpa_config_set(ssid, "password", cred->password, 0) < 0) 1501 return -1; 1502 if (!cred->ext_password && 1503 wpa_config_set_quoted(ssid, "password", cred->password) < 1504 0) 1505 return -1; 1506 } 1507 1508 if (cred->client_cert && cred->client_cert[0] && 1509 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0) 1510 return -1; 1511 1512 #ifdef ANDROID 1513 if (cred->private_key && 1514 os_strncmp(cred->private_key, "keystore://", 11) == 0) { 1515 /* Use OpenSSL engine configuration for Android keystore */ 1516 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 || 1517 wpa_config_set_quoted(ssid, "key_id", 1518 cred->private_key + 11) < 0 || 1519 wpa_config_set(ssid, "engine", "1", 0) < 0) 1520 return -1; 1521 } else 1522 #endif /* ANDROID */ 1523 if (cred->private_key && cred->private_key[0] && 1524 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0) 1525 return -1; 1526 1527 if (cred->private_key_passwd && cred->private_key_passwd[0] && 1528 wpa_config_set_quoted(ssid, "private_key_passwd", 1529 cred->private_key_passwd) < 0) 1530 return -1; 1531 1532 if (cred->phase1) { 1533 os_free(ssid->eap.phase1); 1534 ssid->eap.phase1 = os_strdup(cred->phase1); 1535 } 1536 if (cred->phase2) { 1537 os_free(ssid->eap.phase2); 1538 ssid->eap.phase2 = os_strdup(cred->phase2); 1539 } 1540 1541 if (cred->ca_cert && cred->ca_cert[0] && 1542 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0) 1543 return -1; 1544 1545 if (cred->domain_suffix_match && cred->domain_suffix_match[0] && 1546 wpa_config_set_quoted(ssid, "domain_suffix_match", 1547 cred->domain_suffix_match) < 0) 1548 return -1; 1549 1550 ssid->eap.ocsp = cred->ocsp; 1551 1552 return 0; 1553 } 1554 1555 1556 static int interworking_connect_roaming_consortium( 1557 struct wpa_supplicant *wpa_s, struct wpa_cred *cred, 1558 struct wpa_bss *bss, int only_add) 1559 { 1560 struct wpa_ssid *ssid; 1561 const u8 *ie; 1562 const struct wpabuf *anqp; 1563 unsigned int i; 1564 1565 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR 1566 " based on roaming consortium match", MAC2STR(bss->bssid)); 1567 1568 if (already_connected(wpa_s, cred, bss)) { 1569 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 1570 MAC2STR(bss->bssid)); 1571 return wpa_s->current_ssid->id; 1572 } 1573 1574 remove_duplicate_network(wpa_s, cred, bss); 1575 1576 ssid = wpa_config_add_network(wpa_s->conf); 1577 if (ssid == NULL) 1578 return -1; 1579 ssid->parent_cred = cred; 1580 wpas_notify_network_added(wpa_s, ssid); 1581 wpa_config_set_network_defaults(ssid); 1582 ssid->priority = cred->priority; 1583 ssid->temporary = 1; 1584 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1585 if (ssid->ssid == NULL) 1586 goto fail; 1587 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1588 ssid->ssid_len = bss->ssid_len; 1589 1590 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1591 goto fail; 1592 1593 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1594 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL; 1595 for (i = 0; (ie || anqp) && i < cred->num_roaming_consortiums; i++) { 1596 if (!roaming_consortium_match( 1597 ie, anqp, cred->roaming_consortiums[i], 1598 cred->roaming_consortiums_len[i])) 1599 continue; 1600 1601 ssid->roaming_consortium_selection = 1602 os_malloc(cred->roaming_consortiums_len[i]); 1603 if (!ssid->roaming_consortium_selection) 1604 goto fail; 1605 os_memcpy(ssid->roaming_consortium_selection, 1606 cred->roaming_consortiums[i], 1607 cred->roaming_consortiums_len[i]); 1608 ssid->roaming_consortium_selection_len = 1609 cred->roaming_consortiums_len[i]; 1610 break; 1611 } 1612 1613 if (cred->eap_method == NULL) { 1614 wpa_msg(wpa_s, MSG_DEBUG, 1615 "Interworking: No EAP method set for credential using roaming consortium"); 1616 goto fail; 1617 } 1618 1619 if (interworking_set_eap_params( 1620 ssid, cred, 1621 cred->eap_method->vendor == EAP_VENDOR_IETF && 1622 cred->eap_method->method == EAP_TYPE_TTLS) < 0) 1623 goto fail; 1624 1625 wpa_s->next_ssid = ssid; 1626 wpa_config_update_prio_list(wpa_s->conf); 1627 if (!only_add) 1628 interworking_reconnect(wpa_s); 1629 1630 return ssid->id; 1631 1632 fail: 1633 wpas_notify_network_removed(wpa_s, ssid); 1634 wpa_config_remove_network(wpa_s->conf, ssid->id); 1635 return -1; 1636 } 1637 1638 1639 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 1640 int only_add) 1641 { 1642 struct wpa_cred *cred, *cred_rc, *cred_3gpp; 1643 struct wpa_ssid *ssid; 1644 struct nai_realm *realm; 1645 struct nai_realm_eap *eap = NULL; 1646 u16 count, i; 1647 char buf[100]; 1648 int excluded = 0, *excl = &excluded; 1649 const char *name; 1650 1651 if (wpa_s->conf->cred == NULL || bss == NULL) 1652 return -1; 1653 if (disallowed_bssid(wpa_s, bss->bssid) || 1654 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 1655 wpa_msg(wpa_s, MSG_DEBUG, 1656 "Interworking: Reject connection to disallowed BSS " 1657 MACSTR, MAC2STR(bss->bssid)); 1658 return -1; 1659 } 1660 1661 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR 1662 " for connection", 1663 MAC2STR(bss->bssid)); 1664 1665 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { 1666 /* 1667 * We currently support only HS 2.0 networks and those are 1668 * required to use WPA2-Enterprise. 1669 */ 1670 wpa_msg(wpa_s, MSG_DEBUG, 1671 "Interworking: Network does not use RSN"); 1672 return -1; 1673 } 1674 1675 cred_rc = interworking_credentials_available_roaming_consortium( 1676 wpa_s, bss, 0, excl); 1677 if (cred_rc) { 1678 wpa_msg(wpa_s, MSG_DEBUG, 1679 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d", 1680 cred_rc->priority, cred_rc->sp_priority); 1681 if (excl && !(*excl)) 1682 excl = NULL; 1683 } 1684 1685 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl); 1686 if (cred) { 1687 wpa_msg(wpa_s, MSG_DEBUG, 1688 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d", 1689 cred->priority, cred->sp_priority); 1690 if (excl && !(*excl)) 1691 excl = NULL; 1692 } 1693 1694 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0, 1695 excl); 1696 if (cred_3gpp) { 1697 wpa_msg(wpa_s, MSG_DEBUG, 1698 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d", 1699 cred_3gpp->priority, cred_3gpp->sp_priority); 1700 if (excl && !(*excl)) 1701 excl = NULL; 1702 } 1703 1704 if (!cred_rc && !cred && !cred_3gpp) { 1705 wpa_msg(wpa_s, MSG_DEBUG, 1706 "Interworking: No full credential matches - consider options without BW(etc.) limits"); 1707 cred_rc = interworking_credentials_available_roaming_consortium( 1708 wpa_s, bss, 1, excl); 1709 if (cred_rc) { 1710 wpa_msg(wpa_s, MSG_DEBUG, 1711 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)", 1712 cred_rc->priority, cred_rc->sp_priority); 1713 if (excl && !(*excl)) 1714 excl = NULL; 1715 } 1716 1717 cred = interworking_credentials_available_realm(wpa_s, bss, 1, 1718 excl); 1719 if (cred) { 1720 wpa_msg(wpa_s, MSG_DEBUG, 1721 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)", 1722 cred->priority, cred->sp_priority); 1723 if (excl && !(*excl)) 1724 excl = NULL; 1725 } 1726 1727 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 1728 1, excl); 1729 if (cred_3gpp) { 1730 wpa_msg(wpa_s, MSG_DEBUG, 1731 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)", 1732 cred_3gpp->priority, cred_3gpp->sp_priority); 1733 if (excl && !(*excl)) 1734 excl = NULL; 1735 } 1736 } 1737 1738 if (cred_rc && 1739 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) && 1740 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0)) 1741 return interworking_connect_roaming_consortium(wpa_s, cred_rc, 1742 bss, only_add); 1743 1744 if (cred_3gpp && 1745 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) { 1746 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss, 1747 only_add); 1748 } 1749 1750 if (cred == NULL) { 1751 wpa_msg(wpa_s, MSG_DEBUG, 1752 "Interworking: No matching credentials found for " 1753 MACSTR, MAC2STR(bss->bssid)); 1754 return -1; 1755 } 1756 1757 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL, 1758 &count); 1759 if (realm == NULL) { 1760 wpa_msg(wpa_s, MSG_DEBUG, 1761 "Interworking: Could not parse NAI Realm list from " 1762 MACSTR, MAC2STR(bss->bssid)); 1763 return -1; 1764 } 1765 1766 for (i = 0; i < count; i++) { 1767 if (!nai_realm_match(&realm[i], cred->realm)) 1768 continue; 1769 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]); 1770 if (eap) 1771 break; 1772 } 1773 1774 if (!eap) { 1775 wpa_msg(wpa_s, MSG_DEBUG, 1776 "Interworking: No matching credentials and EAP method found for " 1777 MACSTR, MAC2STR(bss->bssid)); 1778 nai_realm_free(realm, count); 1779 return -1; 1780 } 1781 1782 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR, 1783 MAC2STR(bss->bssid)); 1784 1785 if (already_connected(wpa_s, cred, bss)) { 1786 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 1787 MAC2STR(bss->bssid)); 1788 nai_realm_free(realm, count); 1789 return 0; 1790 } 1791 1792 remove_duplicate_network(wpa_s, cred, bss); 1793 1794 ssid = wpa_config_add_network(wpa_s->conf); 1795 if (ssid == NULL) { 1796 nai_realm_free(realm, count); 1797 return -1; 1798 } 1799 ssid->parent_cred = cred; 1800 wpas_notify_network_added(wpa_s, ssid); 1801 wpa_config_set_network_defaults(ssid); 1802 ssid->priority = cred->priority; 1803 ssid->temporary = 1; 1804 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1805 if (ssid->ssid == NULL) 1806 goto fail; 1807 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1808 ssid->ssid_len = bss->ssid_len; 1809 1810 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1811 goto fail; 1812 1813 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF, 1814 eap->method), 0) < 0) 1815 goto fail; 1816 1817 switch (eap->method) { 1818 case EAP_TYPE_TTLS: 1819 if (eap->inner_method) { 1820 name = eap_get_name(EAP_VENDOR_IETF, eap->inner_method); 1821 if (!name) 1822 goto fail; 1823 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", name); 1824 if (wpa_config_set(ssid, "phase2", buf, 0) < 0) 1825 goto fail; 1826 break; 1827 } 1828 switch (eap->inner_non_eap) { 1829 case NAI_REALM_INNER_NON_EAP_PAP: 1830 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) < 1831 0) 1832 goto fail; 1833 break; 1834 case NAI_REALM_INNER_NON_EAP_CHAP: 1835 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0) 1836 < 0) 1837 goto fail; 1838 break; 1839 case NAI_REALM_INNER_NON_EAP_MSCHAP: 1840 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"", 1841 0) < 0) 1842 goto fail; 1843 break; 1844 case NAI_REALM_INNER_NON_EAP_MSCHAPV2: 1845 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", 1846 0) < 0) 1847 goto fail; 1848 break; 1849 default: 1850 /* EAP params were not set - assume TTLS/MSCHAPv2 */ 1851 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", 1852 0) < 0) 1853 goto fail; 1854 break; 1855 } 1856 break; 1857 case EAP_TYPE_PEAP: 1858 case EAP_TYPE_FAST: 1859 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"", 1860 0) < 0) 1861 goto fail; 1862 if (wpa_config_set(ssid, "pac_file", 1863 "\"blob://pac_interworking\"", 0) < 0) 1864 goto fail; 1865 name = eap_get_name(EAP_VENDOR_IETF, 1866 eap->inner_method ? eap->inner_method : 1867 EAP_TYPE_MSCHAPV2); 1868 if (name == NULL) 1869 goto fail; 1870 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name); 1871 if (wpa_config_set(ssid, "phase2", buf, 0) < 0) 1872 goto fail; 1873 break; 1874 case EAP_TYPE_TLS: 1875 break; 1876 } 1877 1878 if (interworking_set_eap_params(ssid, cred, 1879 eap->method == EAP_TYPE_TTLS) < 0) 1880 goto fail; 1881 1882 nai_realm_free(realm, count); 1883 1884 wpa_s->next_ssid = ssid; 1885 wpa_config_update_prio_list(wpa_s->conf); 1886 if (!only_add) 1887 interworking_reconnect(wpa_s); 1888 1889 return ssid->id; 1890 1891 fail: 1892 wpas_notify_network_removed(wpa_s, ssid); 1893 wpa_config_remove_network(wpa_s->conf, ssid->id); 1894 nai_realm_free(realm, count); 1895 return -1; 1896 } 1897 1898 1899 #ifdef PCSC_FUNCS 1900 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s) 1901 { 1902 size_t len; 1903 1904 if (wpa_s->imsi[0] && wpa_s->mnc_len) 1905 return 0; 1906 1907 len = sizeof(wpa_s->imsi) - 1; 1908 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 1909 scard_deinit(wpa_s->scard); 1910 wpa_s->scard = NULL; 1911 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 1912 return -1; 1913 } 1914 wpa_s->imsi[len] = '\0'; 1915 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 1916 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 1917 wpa_s->imsi, wpa_s->mnc_len); 1918 1919 return 0; 1920 } 1921 #endif /* PCSC_FUNCS */ 1922 1923 1924 static struct wpa_cred * interworking_credentials_available_3gpp( 1925 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 1926 int *excluded) 1927 { 1928 struct wpa_cred *selected = NULL; 1929 #ifdef INTERWORKING_3GPP 1930 struct wpa_cred *cred; 1931 int ret; 1932 int is_excluded = 0; 1933 1934 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) { 1935 wpa_msg(wpa_s, MSG_DEBUG, 1936 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p", 1937 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL); 1938 return NULL; 1939 } 1940 1941 #ifdef CONFIG_EAP_PROXY 1942 if (!wpa_s->imsi[0]) { 1943 size_t len; 1944 wpa_msg(wpa_s, MSG_DEBUG, 1945 "Interworking: IMSI not available - try to read again through eap_proxy"); 1946 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1, 1947 wpa_s->imsi, 1948 &len); 1949 if (wpa_s->mnc_len > 0) { 1950 wpa_s->imsi[len] = '\0'; 1951 wpa_msg(wpa_s, MSG_DEBUG, 1952 "eap_proxy: IMSI %s (MNC length %d)", 1953 wpa_s->imsi, wpa_s->mnc_len); 1954 } else { 1955 wpa_msg(wpa_s, MSG_DEBUG, 1956 "eap_proxy: IMSI not available"); 1957 } 1958 } 1959 #endif /* CONFIG_EAP_PROXY */ 1960 1961 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 1962 char *sep; 1963 const char *imsi; 1964 int mnc_len; 1965 char imsi_buf[16]; 1966 size_t msin_len; 1967 1968 #ifdef PCSC_FUNCS 1969 if (cred->pcsc && wpa_s->scard) { 1970 if (interworking_pcsc_read_imsi(wpa_s) < 0) 1971 continue; 1972 imsi = wpa_s->imsi; 1973 mnc_len = wpa_s->mnc_len; 1974 goto compare; 1975 } 1976 #endif /* PCSC_FUNCS */ 1977 #ifdef CONFIG_EAP_PROXY 1978 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { 1979 imsi = wpa_s->imsi; 1980 mnc_len = wpa_s->mnc_len; 1981 goto compare; 1982 } 1983 #endif /* CONFIG_EAP_PROXY */ 1984 1985 if (cred->imsi == NULL || !cred->imsi[0] || 1986 (!wpa_s->conf->external_sim && 1987 (cred->milenage == NULL || !cred->milenage[0]))) 1988 continue; 1989 1990 sep = os_strchr(cred->imsi, '-'); 1991 if (sep == NULL || 1992 (sep - cred->imsi != 5 && sep - cred->imsi != 6)) 1993 continue; 1994 mnc_len = sep - cred->imsi - 3; 1995 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len); 1996 sep++; 1997 msin_len = os_strlen(cred->imsi); 1998 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1) 1999 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1; 2000 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len); 2001 imsi_buf[3 + mnc_len + msin_len] = '\0'; 2002 imsi = imsi_buf; 2003 2004 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY) 2005 compare: 2006 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */ 2007 wpa_msg(wpa_s, MSG_DEBUG, 2008 "Interworking: Parsing 3GPP info from " MACSTR, 2009 MAC2STR(bss->bssid)); 2010 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len); 2011 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound", 2012 ret ? "" : "not "); 2013 if (ret) { 2014 if (cred_no_required_oi_match(cred, bss)) 2015 continue; 2016 if (!ignore_bw && 2017 cred_below_min_backhaul(wpa_s, cred, bss)) 2018 continue; 2019 if (!ignore_bw && 2020 cred_over_max_bss_load(wpa_s, cred, bss)) 2021 continue; 2022 if (!ignore_bw && 2023 cred_conn_capab_missing(wpa_s, cred, bss)) 2024 continue; 2025 if (cred_excluded_ssid(cred, bss)) { 2026 if (excluded == NULL) 2027 continue; 2028 if (selected == NULL) { 2029 selected = cred; 2030 is_excluded = 1; 2031 } 2032 } else { 2033 if (selected == NULL || is_excluded || 2034 cred_prio_cmp(selected, cred) < 0) { 2035 selected = cred; 2036 is_excluded = 0; 2037 } 2038 } 2039 } 2040 } 2041 2042 if (excluded) 2043 *excluded = is_excluded; 2044 #endif /* INTERWORKING_3GPP */ 2045 return selected; 2046 } 2047 2048 2049 static struct wpa_cred * interworking_credentials_available_realm( 2050 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 2051 int *excluded) 2052 { 2053 struct wpa_cred *cred, *selected = NULL; 2054 struct nai_realm *realm; 2055 u16 count, i; 2056 int is_excluded = 0; 2057 2058 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL) 2059 return NULL; 2060 2061 if (wpa_s->conf->cred == NULL) 2062 return NULL; 2063 2064 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from " 2065 MACSTR, MAC2STR(bss->bssid)); 2066 realm = nai_realm_parse(bss->anqp->nai_realm, &count); 2067 if (realm == NULL) { 2068 wpa_msg(wpa_s, MSG_DEBUG, 2069 "Interworking: Could not parse NAI Realm list from " 2070 MACSTR, MAC2STR(bss->bssid)); 2071 return NULL; 2072 } 2073 2074 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 2075 if (cred->realm == NULL) 2076 continue; 2077 2078 for (i = 0; i < count; i++) { 2079 if (!nai_realm_match(&realm[i], cred->realm)) 2080 continue; 2081 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) { 2082 if (cred_no_required_oi_match(cred, bss)) 2083 continue; 2084 if (!ignore_bw && 2085 cred_below_min_backhaul(wpa_s, cred, bss)) 2086 continue; 2087 if (!ignore_bw && 2088 cred_over_max_bss_load(wpa_s, cred, bss)) 2089 continue; 2090 if (!ignore_bw && 2091 cred_conn_capab_missing(wpa_s, cred, bss)) 2092 continue; 2093 if (cred_excluded_ssid(cred, bss)) { 2094 if (excluded == NULL) 2095 continue; 2096 if (selected == NULL) { 2097 selected = cred; 2098 is_excluded = 1; 2099 } 2100 } else { 2101 if (selected == NULL || is_excluded || 2102 cred_prio_cmp(selected, cred) < 0) 2103 { 2104 selected = cred; 2105 is_excluded = 0; 2106 } 2107 } 2108 break; 2109 } else { 2110 wpa_msg(wpa_s, MSG_DEBUG, 2111 "Interworking: realm-find-eap returned false"); 2112 } 2113 } 2114 } 2115 2116 nai_realm_free(realm, count); 2117 2118 if (excluded) 2119 *excluded = is_excluded; 2120 2121 return selected; 2122 } 2123 2124 2125 static struct wpa_cred * interworking_credentials_available_helper( 2126 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 2127 int *excluded) 2128 { 2129 struct wpa_cred *cred, *cred2; 2130 int excluded1, excluded2 = 0; 2131 2132 if (disallowed_bssid(wpa_s, bss->bssid) || 2133 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 2134 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS " 2135 MACSTR, MAC2STR(bss->bssid)); 2136 return NULL; 2137 } 2138 2139 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw, 2140 &excluded1); 2141 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw, 2142 &excluded2); 2143 if (cred && cred2 && 2144 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { 2145 cred = cred2; 2146 excluded1 = excluded2; 2147 } 2148 if (!cred) { 2149 cred = cred2; 2150 excluded1 = excluded2; 2151 } 2152 2153 cred2 = interworking_credentials_available_roaming_consortium( 2154 wpa_s, bss, ignore_bw, &excluded2); 2155 if (cred && cred2 && 2156 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { 2157 cred = cred2; 2158 excluded1 = excluded2; 2159 } 2160 if (!cred) { 2161 cred = cred2; 2162 excluded1 = excluded2; 2163 } 2164 2165 if (excluded) 2166 *excluded = excluded1; 2167 return cred; 2168 } 2169 2170 2171 static struct wpa_cred * interworking_credentials_available( 2172 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded) 2173 { 2174 struct wpa_cred *cred; 2175 2176 if (excluded) 2177 *excluded = 0; 2178 cred = interworking_credentials_available_helper(wpa_s, bss, 0, 2179 excluded); 2180 if (cred) 2181 return cred; 2182 return interworking_credentials_available_helper(wpa_s, bss, 1, 2183 excluded); 2184 } 2185 2186 2187 int domain_name_list_contains(struct wpabuf *domain_names, 2188 const char *domain, int exact_match) 2189 { 2190 const u8 *pos, *end; 2191 size_t len; 2192 2193 len = os_strlen(domain); 2194 pos = wpabuf_head(domain_names); 2195 end = pos + wpabuf_len(domain_names); 2196 2197 while (end - pos > 1) { 2198 u8 elen; 2199 2200 elen = *pos++; 2201 if (elen > end - pos) 2202 break; 2203 2204 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name", 2205 pos, elen); 2206 if (elen == len && 2207 os_strncasecmp(domain, (const char *) pos, len) == 0) 2208 return 1; 2209 if (!exact_match && elen > len && pos[elen - len - 1] == '.') { 2210 const char *ap = (const char *) pos; 2211 int offset = elen - len; 2212 2213 if (os_strncasecmp(domain, ap + offset, len) == 0) 2214 return 1; 2215 } 2216 2217 pos += elen; 2218 } 2219 2220 return 0; 2221 } 2222 2223 2224 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s, 2225 struct wpa_cred *cred, 2226 struct wpabuf *domain_names) 2227 { 2228 size_t i; 2229 int ret = -1; 2230 #ifdef INTERWORKING_3GPP 2231 char nai[100], *realm; 2232 2233 char *imsi = NULL; 2234 int mnc_len = 0; 2235 if (cred->imsi) 2236 imsi = cred->imsi; 2237 #ifdef PCSC_FUNCS 2238 else if (cred->pcsc && wpa_s->scard) { 2239 if (interworking_pcsc_read_imsi(wpa_s) < 0) 2240 return -1; 2241 imsi = wpa_s->imsi; 2242 mnc_len = wpa_s->mnc_len; 2243 } 2244 #endif /* PCSC_FUNCS */ 2245 #ifdef CONFIG_EAP_PROXY 2246 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { 2247 imsi = wpa_s->imsi; 2248 mnc_len = wpa_s->mnc_len; 2249 } 2250 #endif /* CONFIG_EAP_PROXY */ 2251 if (domain_names && 2252 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) { 2253 realm = os_strchr(nai, '@'); 2254 if (realm) 2255 realm++; 2256 wpa_msg(wpa_s, MSG_DEBUG, 2257 "Interworking: Search for match with SIM/USIM domain %s", 2258 realm); 2259 if (realm && 2260 domain_name_list_contains(domain_names, realm, 1)) 2261 return 1; 2262 if (realm) 2263 ret = 0; 2264 } 2265 #endif /* INTERWORKING_3GPP */ 2266 2267 if (domain_names == NULL || cred->domain == NULL) 2268 return ret; 2269 2270 for (i = 0; i < cred->num_domain; i++) { 2271 wpa_msg(wpa_s, MSG_DEBUG, 2272 "Interworking: Search for match with home SP FQDN %s", 2273 cred->domain[i]); 2274 if (domain_name_list_contains(domain_names, cred->domain[i], 1)) 2275 return 1; 2276 } 2277 2278 return 0; 2279 } 2280 2281 2282 static int interworking_home_sp(struct wpa_supplicant *wpa_s, 2283 struct wpabuf *domain_names) 2284 { 2285 struct wpa_cred *cred; 2286 2287 if (domain_names == NULL || wpa_s->conf->cred == NULL) 2288 return -1; 2289 2290 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 2291 int res = interworking_home_sp_cred(wpa_s, cred, domain_names); 2292 if (res) 2293 return res; 2294 } 2295 2296 return 0; 2297 } 2298 2299 2300 static int interworking_find_network_match(struct wpa_supplicant *wpa_s) 2301 { 2302 struct wpa_bss *bss; 2303 struct wpa_ssid *ssid; 2304 2305 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2306 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 2307 if (wpas_network_disabled(wpa_s, ssid) || 2308 ssid->mode != WPAS_MODE_INFRA) 2309 continue; 2310 if (ssid->ssid_len != bss->ssid_len || 2311 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) != 2312 0) 2313 continue; 2314 /* 2315 * TODO: Consider more accurate matching of security 2316 * configuration similarly to what is done in events.c 2317 */ 2318 return 1; 2319 } 2320 } 2321 2322 return 0; 2323 } 2324 2325 2326 static int roaming_partner_match(struct wpa_supplicant *wpa_s, 2327 struct roaming_partner *partner, 2328 struct wpabuf *domain_names) 2329 { 2330 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'", 2331 partner->fqdn, partner->exact_match, partner->priority, 2332 partner->country); 2333 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names", 2334 wpabuf_head(domain_names), 2335 wpabuf_len(domain_names)); 2336 if (!domain_name_list_contains(domain_names, partner->fqdn, 2337 partner->exact_match)) 2338 return 0; 2339 /* TODO: match Country */ 2340 return 1; 2341 } 2342 2343 2344 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred, 2345 struct wpa_bss *bss) 2346 { 2347 size_t i; 2348 2349 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) { 2350 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128"); 2351 return 128; /* cannot check preference with domain name */ 2352 } 2353 2354 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0) 2355 { 2356 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority"); 2357 return 0; /* max preference for home SP network */ 2358 } 2359 2360 for (i = 0; i < cred->num_roaming_partner; i++) { 2361 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i], 2362 bss->anqp->domain_name)) { 2363 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u", 2364 cred->roaming_partner[i].priority); 2365 return cred->roaming_partner[i].priority; 2366 } 2367 } 2368 2369 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128"); 2370 return 128; 2371 } 2372 2373 2374 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s, 2375 struct wpa_bss *selected, 2376 struct wpa_cred *cred) 2377 { 2378 struct wpa_bss *bss; 2379 u8 best_prio, prio; 2380 struct wpa_cred *cred2; 2381 2382 /* 2383 * Check if any other BSS is operated by a more preferred roaming 2384 * partner. 2385 */ 2386 2387 best_prio = roaming_prio(wpa_s, cred, selected); 2388 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS " 2389 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid), 2390 cred->id); 2391 2392 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2393 if (bss == selected) 2394 continue; 2395 cred2 = interworking_credentials_available(wpa_s, bss, NULL); 2396 if (!cred2) 2397 continue; 2398 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) 2399 continue; 2400 prio = roaming_prio(wpa_s, cred2, bss); 2401 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS " 2402 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid), 2403 cred2->id); 2404 if (prio < best_prio) { 2405 int bh1, bh2, load1, load2, conn1, conn2; 2406 bh1 = cred_below_min_backhaul(wpa_s, cred, selected); 2407 load1 = cred_over_max_bss_load(wpa_s, cred, selected); 2408 conn1 = cred_conn_capab_missing(wpa_s, cred, selected); 2409 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss); 2410 load2 = cred_over_max_bss_load(wpa_s, cred2, bss); 2411 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss); 2412 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d", 2413 bh1, load1, conn1, bh2, load2, conn2); 2414 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) { 2415 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid)); 2416 best_prio = prio; 2417 selected = bss; 2418 } 2419 } 2420 } 2421 2422 return selected; 2423 } 2424 2425 2426 static void interworking_select_network(struct wpa_supplicant *wpa_s) 2427 { 2428 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL; 2429 struct wpa_bss *selected2 = NULL, *selected2_home = NULL; 2430 unsigned int count = 0; 2431 const char *type; 2432 int res; 2433 struct wpa_cred *cred, *selected_cred = NULL; 2434 struct wpa_cred *selected_home_cred = NULL; 2435 struct wpa_cred *selected2_cred = NULL; 2436 struct wpa_cred *selected2_home_cred = NULL; 2437 2438 wpa_s->network_select = 0; 2439 2440 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)", 2441 wpa_s->auto_select); 2442 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2443 int excluded = 0; 2444 int bh, bss_load, conn_capab; 2445 cred = interworking_credentials_available(wpa_s, bss, 2446 &excluded); 2447 if (!cred) 2448 continue; 2449 2450 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { 2451 /* 2452 * We currently support only HS 2.0 networks and those 2453 * are required to use WPA2-Enterprise. 2454 */ 2455 wpa_msg(wpa_s, MSG_DEBUG, 2456 "Interworking: Credential match with " MACSTR 2457 " but network does not use RSN", 2458 MAC2STR(bss->bssid)); 2459 continue; 2460 } 2461 if (!excluded) 2462 count++; 2463 res = interworking_home_sp(wpa_s, bss->anqp ? 2464 bss->anqp->domain_name : NULL); 2465 if (res > 0) 2466 type = "home"; 2467 else if (res == 0) 2468 type = "roaming"; 2469 else 2470 type = "unknown"; 2471 bh = cred_below_min_backhaul(wpa_s, cred, bss); 2472 bss_load = cred_over_max_bss_load(wpa_s, cred, bss); 2473 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss); 2474 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d", 2475 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP, 2476 MAC2STR(bss->bssid), type, 2477 bh ? " below_min_backhaul=1" : "", 2478 bss_load ? " over_max_bss_load=1" : "", 2479 conn_capab ? " conn_capab_missing=1" : "", 2480 cred->id, cred->priority, cred->sp_priority); 2481 if (excluded) 2482 continue; 2483 if (wpa_s->auto_select || 2484 (wpa_s->conf->auto_interworking && 2485 wpa_s->auto_network_select)) { 2486 if (bh || bss_load || conn_capab) { 2487 if (selected2_cred == NULL || 2488 cred_prio_cmp(cred, selected2_cred) > 0) { 2489 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2"); 2490 selected2 = bss; 2491 selected2_cred = cred; 2492 } 2493 if (res > 0 && 2494 (selected2_home_cred == NULL || 2495 cred_prio_cmp(cred, selected2_home_cred) > 2496 0)) { 2497 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home"); 2498 selected2_home = bss; 2499 selected2_home_cred = cred; 2500 } 2501 } else { 2502 if (selected_cred == NULL || 2503 cred_prio_cmp(cred, selected_cred) > 0) { 2504 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected"); 2505 selected = bss; 2506 selected_cred = cred; 2507 } 2508 if (res > 0 && 2509 (selected_home_cred == NULL || 2510 cred_prio_cmp(cred, selected_home_cred) > 2511 0)) { 2512 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home"); 2513 selected_home = bss; 2514 selected_home_cred = cred; 2515 } 2516 } 2517 } 2518 } 2519 2520 if (selected_home && selected_home != selected && 2521 selected_home_cred && 2522 (selected_cred == NULL || 2523 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) { 2524 /* Prefer network operated by the Home SP */ 2525 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home"); 2526 selected = selected_home; 2527 selected_cred = selected_home_cred; 2528 } 2529 2530 if (!selected) { 2531 if (selected2_home) { 2532 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected"); 2533 selected = selected2_home; 2534 selected_cred = selected2_home_cred; 2535 } else if (selected2) { 2536 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected"); 2537 selected = selected2; 2538 selected_cred = selected2_cred; 2539 } 2540 } 2541 2542 if (count == 0) { 2543 /* 2544 * No matching network was found based on configured 2545 * credentials. Check whether any of the enabled network blocks 2546 * have matching APs. 2547 */ 2548 if (interworking_find_network_match(wpa_s)) { 2549 wpa_msg(wpa_s, MSG_DEBUG, 2550 "Interworking: Possible BSS match for enabled network configurations"); 2551 if (wpa_s->auto_select) { 2552 interworking_reconnect(wpa_s); 2553 return; 2554 } 2555 } 2556 2557 if (wpa_s->auto_network_select) { 2558 wpa_msg(wpa_s, MSG_DEBUG, 2559 "Interworking: Continue scanning after ANQP fetch"); 2560 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 2561 0); 2562 return; 2563 } 2564 2565 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network " 2566 "with matching credentials found"); 2567 if (wpa_s->wpa_state == WPA_SCANNING) 2568 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2569 } 2570 2571 if (selected) { 2572 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR, 2573 MAC2STR(selected->bssid)); 2574 selected = pick_best_roaming_partner(wpa_s, selected, 2575 selected_cred); 2576 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR 2577 " (after best roaming partner selection)", 2578 MAC2STR(selected->bssid)); 2579 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR, 2580 MAC2STR(selected->bssid)); 2581 interworking_connect(wpa_s, selected, 0); 2582 } else if (wpa_s->wpa_state == WPA_SCANNING) 2583 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2584 } 2585 2586 2587 static struct wpa_bss_anqp * 2588 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 2589 { 2590 struct wpa_bss *other; 2591 2592 if (is_zero_ether_addr(bss->hessid)) 2593 return NULL; /* Cannot be in the same homegenous ESS */ 2594 2595 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) { 2596 if (other == bss) 2597 continue; 2598 if (other->anqp == NULL) 2599 continue; 2600 if (other->anqp->roaming_consortium == NULL && 2601 other->anqp->nai_realm == NULL && 2602 other->anqp->anqp_3gpp == NULL && 2603 other->anqp->domain_name == NULL) 2604 continue; 2605 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED)) 2606 continue; 2607 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0) 2608 continue; 2609 if (bss->ssid_len != other->ssid_len || 2610 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0) 2611 continue; 2612 2613 wpa_msg(wpa_s, MSG_DEBUG, 2614 "Interworking: Share ANQP data with already fetched BSSID " 2615 MACSTR " and " MACSTR, 2616 MAC2STR(other->bssid), MAC2STR(bss->bssid)); 2617 other->anqp->users++; 2618 return other->anqp; 2619 } 2620 2621 return NULL; 2622 } 2623 2624 2625 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s) 2626 { 2627 struct wpa_bss *bss; 2628 int found = 0; 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 if (!wpa_bss_ext_capab(bss, WLAN_EXT_CAPAB_INTERWORKING)) 2652 continue; /* AP does not support Interworking */ 2653 if (disallowed_bssid(wpa_s, bss->bssid) || 2654 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) 2655 continue; /* Disallowed BSS */ 2656 2657 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) { 2658 if (bss->anqp == NULL) { 2659 bss->anqp = interworking_match_anqp_info(wpa_s, 2660 bss); 2661 if (bss->anqp) { 2662 /* Shared data already fetched */ 2663 continue; 2664 } 2665 bss->anqp = wpa_bss_anqp_alloc(); 2666 if (bss->anqp == NULL) 2667 break; 2668 } 2669 found++; 2670 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED; 2671 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for " 2672 MACSTR, MAC2STR(bss->bssid)); 2673 interworking_anqp_send_req(wpa_s, bss); 2674 break; 2675 } 2676 } 2677 2678 if (found == 0) { 2679 #ifdef CONFIG_HS20 2680 if (wpa_s->fetch_osu_info) { 2681 if (wpa_s->num_prov_found == 0 && 2682 wpa_s->fetch_osu_waiting_scan && 2683 wpa_s->num_osu_scans < 3) { 2684 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again"); 2685 hs20_start_osu_scan(wpa_s); 2686 return; 2687 } 2688 wpa_printf(MSG_DEBUG, "Interworking: Next icon"); 2689 hs20_osu_icon_fetch(wpa_s); 2690 return; 2691 } 2692 #endif /* CONFIG_HS20 */ 2693 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed"); 2694 wpa_s->fetch_anqp_in_progress = 0; 2695 if (wpa_s->network_select) 2696 interworking_select_network(wpa_s); 2697 } 2698 } 2699 2700 2701 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s) 2702 { 2703 struct wpa_bss *bss; 2704 2705 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) 2706 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED; 2707 2708 wpa_s->fetch_anqp_in_progress = 1; 2709 2710 /* 2711 * Start actual ANQP operation from eloop call to make sure the loop 2712 * does not end up using excessive recursion. 2713 */ 2714 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL); 2715 } 2716 2717 2718 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s) 2719 { 2720 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) 2721 return 0; 2722 2723 wpa_s->network_select = 0; 2724 wpa_s->fetch_all_anqp = 1; 2725 wpa_s->fetch_osu_info = 0; 2726 2727 interworking_start_fetch_anqp(wpa_s); 2728 2729 return 0; 2730 } 2731 2732 2733 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s) 2734 { 2735 if (!wpa_s->fetch_anqp_in_progress) 2736 return; 2737 2738 wpa_s->fetch_anqp_in_progress = 0; 2739 } 2740 2741 2742 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, 2743 u16 info_ids[], size_t num_ids, u32 subtypes, 2744 u32 mbo_subtypes) 2745 { 2746 struct wpabuf *buf; 2747 struct wpabuf *extra_buf = NULL; 2748 int ret = 0; 2749 int freq; 2750 struct wpa_bss *bss; 2751 int res; 2752 2753 bss = wpa_bss_get_bssid(wpa_s, dst); 2754 if (!bss) { 2755 wpa_printf(MSG_WARNING, 2756 "ANQP: Cannot send query to unknown BSS " 2757 MACSTR, MAC2STR(dst)); 2758 return -1; 2759 } 2760 2761 wpa_bss_anqp_unshare_alloc(bss); 2762 freq = bss->freq; 2763 2764 wpa_msg(wpa_s, MSG_DEBUG, 2765 "ANQP: Query Request to " MACSTR " for %u id(s)", 2766 MAC2STR(dst), (unsigned int) num_ids); 2767 2768 #ifdef CONFIG_HS20 2769 if (subtypes != 0) { 2770 extra_buf = wpabuf_alloc(100); 2771 if (extra_buf == NULL) 2772 return -1; 2773 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf); 2774 } 2775 #endif /* CONFIG_HS20 */ 2776 2777 #ifdef CONFIG_MBO 2778 if (mbo_subtypes) { 2779 struct wpabuf *mbo; 2780 2781 mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes); 2782 if (mbo) { 2783 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) { 2784 wpabuf_free(extra_buf); 2785 wpabuf_free(mbo); 2786 return -1; 2787 } 2788 wpabuf_put_buf(extra_buf, mbo); 2789 wpabuf_free(mbo); 2790 } 2791 } 2792 #endif /* CONFIG_MBO */ 2793 2794 buf = anqp_build_req(info_ids, num_ids, extra_buf); 2795 wpabuf_free(extra_buf); 2796 if (buf == NULL) 2797 return -1; 2798 2799 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, anqp_resp_cb, wpa_s); 2800 if (res < 0) { 2801 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request"); 2802 wpabuf_free(buf); 2803 ret = -1; 2804 } else { 2805 wpa_msg(wpa_s, MSG_DEBUG, 2806 "ANQP: Query started with dialog token %u", res); 2807 } 2808 2809 return ret; 2810 } 2811 2812 2813 static void anqp_add_extra(struct wpa_supplicant *wpa_s, 2814 struct wpa_bss_anqp *anqp, u16 info_id, 2815 const u8 *data, size_t slen) 2816 { 2817 struct wpa_bss_anqp_elem *tmp, *elem = NULL; 2818 2819 if (!anqp) 2820 return; 2821 2822 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem, 2823 list) { 2824 if (tmp->infoid == info_id) { 2825 elem = tmp; 2826 break; 2827 } 2828 } 2829 2830 if (!elem) { 2831 elem = os_zalloc(sizeof(*elem)); 2832 if (!elem) 2833 return; 2834 elem->infoid = info_id; 2835 dl_list_add(&anqp->anqp_elems, &elem->list); 2836 } else { 2837 wpabuf_free(elem->payload); 2838 } 2839 2840 elem->payload = wpabuf_alloc_copy(data, slen); 2841 if (!elem->payload) { 2842 dl_list_del(&elem->list); 2843 os_free(elem); 2844 } 2845 } 2846 2847 2848 static void interworking_parse_venue_url(struct wpa_supplicant *wpa_s, 2849 const u8 *data, size_t len) 2850 { 2851 const u8 *pos = data, *end = data + len; 2852 char url[255]; 2853 2854 while (end - pos >= 2) { 2855 u8 slen, num; 2856 2857 slen = *pos++; 2858 if (slen < 1 || slen > end - pos) { 2859 wpa_printf(MSG_DEBUG, 2860 "ANQP: Truncated Venue URL Duple field"); 2861 return; 2862 } 2863 2864 num = *pos++; 2865 os_memcpy(url, pos, slen - 1); 2866 url[slen - 1] = '\0'; 2867 wpa_msg(wpa_s, MSG_INFO, RX_VENUE_URL "%u %s", num, url); 2868 pos += slen - 1; 2869 } 2870 } 2871 2872 2873 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s, 2874 struct wpa_bss *bss, const u8 *sa, 2875 u16 info_id, 2876 const u8 *data, size_t slen, 2877 u8 dialog_token) 2878 { 2879 const u8 *pos = data; 2880 struct wpa_bss_anqp *anqp = NULL; 2881 u8 type; 2882 2883 if (bss) 2884 anqp = bss->anqp; 2885 2886 switch (info_id) { 2887 case ANQP_CAPABILITY_LIST: 2888 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2889 " ANQP Capability list", MAC2STR(sa)); 2890 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list", 2891 pos, slen); 2892 if (anqp) { 2893 wpabuf_free(anqp->capability_list); 2894 anqp->capability_list = wpabuf_alloc_copy(pos, slen); 2895 } 2896 break; 2897 case ANQP_VENUE_NAME: 2898 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2899 " Venue Name", MAC2STR(sa)); 2900 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen); 2901 if (anqp) { 2902 wpabuf_free(anqp->venue_name); 2903 anqp->venue_name = wpabuf_alloc_copy(pos, slen); 2904 } 2905 break; 2906 case ANQP_NETWORK_AUTH_TYPE: 2907 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2908 " Network Authentication Type information", 2909 MAC2STR(sa)); 2910 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication " 2911 "Type", pos, slen); 2912 if (anqp) { 2913 wpabuf_free(anqp->network_auth_type); 2914 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen); 2915 } 2916 break; 2917 case ANQP_ROAMING_CONSORTIUM: 2918 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2919 " Roaming Consortium list", MAC2STR(sa)); 2920 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium", 2921 pos, slen); 2922 if (anqp) { 2923 wpabuf_free(anqp->roaming_consortium); 2924 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen); 2925 } 2926 break; 2927 case ANQP_IP_ADDR_TYPE_AVAILABILITY: 2928 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2929 " IP Address Type Availability information", 2930 MAC2STR(sa)); 2931 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability", 2932 pos, slen); 2933 if (anqp) { 2934 wpabuf_free(anqp->ip_addr_type_availability); 2935 anqp->ip_addr_type_availability = 2936 wpabuf_alloc_copy(pos, slen); 2937 } 2938 break; 2939 case ANQP_NAI_REALM: 2940 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2941 " NAI Realm list", MAC2STR(sa)); 2942 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen); 2943 if (anqp) { 2944 wpabuf_free(anqp->nai_realm); 2945 anqp->nai_realm = wpabuf_alloc_copy(pos, slen); 2946 } 2947 break; 2948 case ANQP_3GPP_CELLULAR_NETWORK: 2949 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2950 " 3GPP Cellular Network information", MAC2STR(sa)); 2951 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network", 2952 pos, slen); 2953 if (anqp) { 2954 wpabuf_free(anqp->anqp_3gpp); 2955 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen); 2956 } 2957 break; 2958 case ANQP_DOMAIN_NAME: 2959 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2960 " Domain Name list", MAC2STR(sa)); 2961 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen); 2962 if (anqp) { 2963 wpabuf_free(anqp->domain_name); 2964 anqp->domain_name = wpabuf_alloc_copy(pos, slen); 2965 } 2966 break; 2967 #ifdef CONFIG_FILS 2968 case ANQP_FILS_REALM_INFO: 2969 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2970 " FILS Realm Information", MAC2STR(sa)); 2971 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: FILS Realm Information", 2972 pos, slen); 2973 if (anqp) { 2974 wpabuf_free(anqp->fils_realm_info); 2975 anqp->fils_realm_info = wpabuf_alloc_copy(pos, slen); 2976 } 2977 break; 2978 #endif /* CONFIG_FILS */ 2979 case ANQP_VENUE_URL: 2980 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR " Venue URL", 2981 MAC2STR(sa)); 2982 anqp_add_extra(wpa_s, anqp, info_id, pos, slen); 2983 2984 if (!pmf_in_use(wpa_s, sa)) { 2985 wpa_printf(MSG_DEBUG, 2986 "ANQP: Ignore Venue URL since PMF was not enabled"); 2987 break; 2988 } 2989 interworking_parse_venue_url(wpa_s, pos, slen); 2990 break; 2991 case ANQP_VENDOR_SPECIFIC: 2992 if (slen < 3) 2993 return; 2994 2995 switch (WPA_GET_BE24(pos)) { 2996 case OUI_WFA: 2997 pos += 3; 2998 slen -= 3; 2999 3000 if (slen < 1) 3001 return; 3002 type = *pos++; 3003 slen--; 3004 3005 switch (type) { 3006 #ifdef CONFIG_HS20 3007 case HS20_ANQP_OUI_TYPE: 3008 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa, 3009 pos, slen, 3010 dialog_token); 3011 break; 3012 #endif /* CONFIG_HS20 */ 3013 #ifdef CONFIG_MBO 3014 case MBO_ANQP_OUI_TYPE: 3015 mbo_parse_rx_anqp_resp(wpa_s, bss, sa, 3016 pos, slen); 3017 break; 3018 #endif /* CONFIG_MBO */ 3019 default: 3020 wpa_msg(wpa_s, MSG_DEBUG, 3021 "ANQP: Unsupported ANQP vendor type %u", 3022 type); 3023 break; 3024 } 3025 break; 3026 default: 3027 wpa_msg(wpa_s, MSG_DEBUG, 3028 "Interworking: Unsupported vendor-specific ANQP OUI %06x", 3029 WPA_GET_BE24(pos)); 3030 return; 3031 } 3032 break; 3033 default: 3034 wpa_msg(wpa_s, MSG_DEBUG, 3035 "Interworking: Unsupported ANQP Info ID %u", info_id); 3036 anqp_add_extra(wpa_s, anqp, info_id, data, slen); 3037 break; 3038 } 3039 } 3040 3041 3042 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token, 3043 enum gas_query_result result, 3044 const struct wpabuf *adv_proto, 3045 const struct wpabuf *resp, u16 status_code) 3046 { 3047 struct wpa_supplicant *wpa_s = ctx; 3048 const u8 *pos; 3049 const u8 *end; 3050 u16 info_id; 3051 u16 slen; 3052 struct wpa_bss *bss = NULL, *tmp; 3053 const char *anqp_result = "SUCCESS"; 3054 3055 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR 3056 " dialog_token=%u result=%d status_code=%u", 3057 MAC2STR(dst), dialog_token, result, status_code); 3058 if (result != GAS_QUERY_SUCCESS) { 3059 #ifdef CONFIG_HS20 3060 if (wpa_s->fetch_osu_icon_in_progress) 3061 hs20_icon_fetch_failed(wpa_s); 3062 #endif /* CONFIG_HS20 */ 3063 anqp_result = "FAILURE"; 3064 goto out; 3065 } 3066 3067 pos = wpabuf_head(adv_proto); 3068 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO || 3069 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) { 3070 wpa_msg(wpa_s, MSG_DEBUG, 3071 "ANQP: Unexpected Advertisement Protocol in response"); 3072 #ifdef CONFIG_HS20 3073 if (wpa_s->fetch_osu_icon_in_progress) 3074 hs20_icon_fetch_failed(wpa_s); 3075 #endif /* CONFIG_HS20 */ 3076 anqp_result = "INVALID_FRAME"; 3077 goto out; 3078 } 3079 3080 /* 3081 * If possible, select the BSS entry based on which BSS entry was used 3082 * for the request. This can help in cases where multiple BSS entries 3083 * may exist for the same AP. 3084 */ 3085 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) { 3086 if (tmp == wpa_s->interworking_gas_bss && 3087 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) { 3088 bss = tmp; 3089 break; 3090 } 3091 } 3092 if (bss == NULL) 3093 bss = wpa_bss_get_bssid(wpa_s, dst); 3094 3095 pos = wpabuf_head(resp); 3096 end = pos + wpabuf_len(resp); 3097 3098 while (pos < end) { 3099 unsigned int left = end - pos; 3100 3101 if (left < 4) { 3102 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element"); 3103 anqp_result = "INVALID_FRAME"; 3104 goto out_parse_done; 3105 } 3106 info_id = WPA_GET_LE16(pos); 3107 pos += 2; 3108 slen = WPA_GET_LE16(pos); 3109 pos += 2; 3110 left -= 4; 3111 if (left < slen) { 3112 wpa_msg(wpa_s, MSG_DEBUG, 3113 "ANQP: Invalid element length for Info ID %u", 3114 info_id); 3115 anqp_result = "INVALID_FRAME"; 3116 goto out_parse_done; 3117 } 3118 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos, 3119 slen, dialog_token); 3120 pos += slen; 3121 } 3122 3123 out_parse_done: 3124 #ifdef CONFIG_HS20 3125 hs20_notify_parse_done(wpa_s); 3126 #endif /* CONFIG_HS20 */ 3127 out: 3128 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s", 3129 MAC2STR(dst), anqp_result); 3130 } 3131 3132 3133 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s, 3134 struct wpa_scan_results *scan_res) 3135 { 3136 wpa_msg(wpa_s, MSG_DEBUG, 3137 "Interworking: Scan results available - start ANQP fetch"); 3138 interworking_start_fetch_anqp(wpa_s); 3139 } 3140 3141 3142 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select, 3143 int *freqs) 3144 { 3145 interworking_stop_fetch_anqp(wpa_s); 3146 wpa_s->network_select = 1; 3147 wpa_s->auto_network_select = 0; 3148 wpa_s->auto_select = !!auto_select; 3149 wpa_s->fetch_all_anqp = 0; 3150 wpa_s->fetch_osu_info = 0; 3151 wpa_msg(wpa_s, MSG_DEBUG, 3152 "Interworking: Start scan for network selection"); 3153 wpa_s->scan_res_handler = interworking_scan_res_handler; 3154 wpa_s->normal_scans = 0; 3155 wpa_s->scan_req = MANUAL_SCAN_REQ; 3156 os_free(wpa_s->manual_scan_freqs); 3157 wpa_s->manual_scan_freqs = freqs; 3158 wpa_s->after_wps = 0; 3159 wpa_s->known_wps_freq = 0; 3160 wpa_supplicant_req_scan(wpa_s, 0, 0); 3161 3162 return 0; 3163 } 3164 3165 3166 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token, 3167 enum gas_query_result result, 3168 const struct wpabuf *adv_proto, 3169 const struct wpabuf *resp, u16 status_code) 3170 { 3171 struct wpa_supplicant *wpa_s = ctx; 3172 struct wpabuf *n; 3173 3174 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR 3175 " dialog_token=%d status_code=%d resp_len=%d", 3176 MAC2STR(addr), dialog_token, status_code, 3177 resp ? (int) wpabuf_len(resp) : -1); 3178 if (!resp) 3179 return; 3180 3181 n = wpabuf_dup(resp); 3182 if (n == NULL) 3183 return; 3184 wpabuf_free(wpa_s->prev_gas_resp); 3185 wpa_s->prev_gas_resp = wpa_s->last_gas_resp; 3186 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN); 3187 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token; 3188 wpa_s->last_gas_resp = n; 3189 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN); 3190 wpa_s->last_gas_dialog_token = dialog_token; 3191 } 3192 3193 3194 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst, 3195 const struct wpabuf *adv_proto, 3196 const struct wpabuf *query) 3197 { 3198 struct wpabuf *buf; 3199 int ret = 0; 3200 int freq; 3201 struct wpa_bss *bss; 3202 int res; 3203 size_t len; 3204 u8 query_resp_len_limit = 0; 3205 3206 freq = wpa_s->assoc_freq; 3207 bss = wpa_bss_get_bssid(wpa_s, dst); 3208 if (bss) 3209 freq = bss->freq; 3210 if (freq <= 0) 3211 return -1; 3212 3213 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)", 3214 MAC2STR(dst), freq); 3215 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto); 3216 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query); 3217 3218 len = 3 + wpabuf_len(adv_proto) + 2; 3219 if (query) 3220 len += wpabuf_len(query); 3221 buf = gas_build_initial_req(0, len); 3222 if (buf == NULL) 3223 return -1; 3224 3225 /* Advertisement Protocol IE */ 3226 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO); 3227 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */ 3228 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f); 3229 wpabuf_put_buf(buf, adv_proto); 3230 3231 /* GAS Query */ 3232 if (query) { 3233 wpabuf_put_le16(buf, wpabuf_len(query)); 3234 wpabuf_put_buf(buf, query); 3235 } else 3236 wpabuf_put_le16(buf, 0); 3237 3238 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, gas_resp_cb, wpa_s); 3239 if (res < 0) { 3240 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request"); 3241 wpabuf_free(buf); 3242 ret = -1; 3243 } else 3244 wpa_msg(wpa_s, MSG_DEBUG, 3245 "GAS: Query started with dialog token %u", res); 3246 3247 return ret; 3248 } 3249