interworking.c revision 351611
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 48static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s); 49static struct wpa_cred * interworking_credentials_available_realm( 50 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 51 int *excluded); 52static 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 57static 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 74static 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 97static 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 124static 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 142static 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 158static 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 170static 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 186static 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 201static 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 216static 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 230static 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 240static 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 247static 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 335struct 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 343struct nai_realm { 344 u8 encoding; 345 char *realm; 346 u8 eap_count; 347 struct nai_realm_eap *eap; 348}; 349 350 351static 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 365static 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 462static 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 523static 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 567static 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 602static 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 672static 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 694static 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 730static 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 813static 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 869static 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 880static 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 906static 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 940static 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 968static 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 1069fail: 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 1077static 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 1119static 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 1145static 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 1153static 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 1170static 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 1191static 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 1209static 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 1270static 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 1294static 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 1306static 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 1322static 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 1368static 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->eap_method) 1392 continue; 1393 1394 if ((cred->roaming_consortium_len == 0 || 1395 !roaming_consortium_match(ie, anqp, 1396 cred->roaming_consortium, 1397 cred->roaming_consortium_len)) && 1398 !cred_roaming_consortiums_match(ie, anqp, cred)) 1399 continue; 1400 1401 if (cred_no_required_oi_match(cred, bss)) 1402 continue; 1403 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss)) 1404 continue; 1405 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss)) 1406 continue; 1407 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss)) 1408 continue; 1409 if (cred_excluded_ssid(cred, bss)) { 1410 if (excluded == NULL) 1411 continue; 1412 if (selected == NULL) { 1413 selected = cred; 1414 is_excluded = 1; 1415 } 1416 } else { 1417 if (selected == NULL || is_excluded || 1418 cred_prio_cmp(selected, cred) < 0) { 1419 selected = cred; 1420 is_excluded = 0; 1421 } 1422 } 1423 } 1424 1425 if (excluded) 1426 *excluded = is_excluded; 1427 1428 return selected; 1429} 1430 1431 1432static int interworking_set_eap_params(struct wpa_ssid *ssid, 1433 struct wpa_cred *cred, int ttls) 1434{ 1435 if (cred->eap_method) { 1436 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF && 1437 cred->eap_method->method == EAP_TYPE_TTLS; 1438 1439 os_free(ssid->eap.eap_methods); 1440 ssid->eap.eap_methods = 1441 os_malloc(sizeof(struct eap_method_type) * 2); 1442 if (ssid->eap.eap_methods == NULL) 1443 return -1; 1444 os_memcpy(ssid->eap.eap_methods, cred->eap_method, 1445 sizeof(*cred->eap_method)); 1446 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF; 1447 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE; 1448 } 1449 1450 if (ttls && cred->username && cred->username[0]) { 1451 const char *pos; 1452 char *anon; 1453 /* Use anonymous NAI in Phase 1 */ 1454 pos = os_strchr(cred->username, '@'); 1455 if (pos) { 1456 size_t buflen = 9 + os_strlen(pos) + 1; 1457 anon = os_malloc(buflen); 1458 if (anon == NULL) 1459 return -1; 1460 os_snprintf(anon, buflen, "anonymous%s", pos); 1461 } else if (cred->realm) { 1462 size_t buflen = 10 + os_strlen(cred->realm) + 1; 1463 anon = os_malloc(buflen); 1464 if (anon == NULL) 1465 return -1; 1466 os_snprintf(anon, buflen, "anonymous@%s", cred->realm); 1467 } else { 1468 anon = os_strdup("anonymous"); 1469 if (anon == NULL) 1470 return -1; 1471 } 1472 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) < 1473 0) { 1474 os_free(anon); 1475 return -1; 1476 } 1477 os_free(anon); 1478 } 1479 1480 if (!ttls && cred->username && cred->username[0] && cred->realm && 1481 !os_strchr(cred->username, '@')) { 1482 char *id; 1483 size_t buflen; 1484 int res; 1485 1486 buflen = os_strlen(cred->username) + 1 + 1487 os_strlen(cred->realm) + 1; 1488 1489 id = os_malloc(buflen); 1490 if (!id) 1491 return -1; 1492 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm); 1493 res = wpa_config_set_quoted(ssid, "identity", id); 1494 os_free(id); 1495 if (res < 0) 1496 return -1; 1497 } else if (cred->username && cred->username[0] && 1498 wpa_config_set_quoted(ssid, "identity", cred->username) < 0) 1499 return -1; 1500 1501 if (cred->password && cred->password[0]) { 1502 if (cred->ext_password && 1503 wpa_config_set(ssid, "password", cred->password, 0) < 0) 1504 return -1; 1505 if (!cred->ext_password && 1506 wpa_config_set_quoted(ssid, "password", cred->password) < 1507 0) 1508 return -1; 1509 } 1510 1511 if (cred->client_cert && cred->client_cert[0] && 1512 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0) 1513 return -1; 1514 1515#ifdef ANDROID 1516 if (cred->private_key && 1517 os_strncmp(cred->private_key, "keystore://", 11) == 0) { 1518 /* Use OpenSSL engine configuration for Android keystore */ 1519 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 || 1520 wpa_config_set_quoted(ssid, "key_id", 1521 cred->private_key + 11) < 0 || 1522 wpa_config_set(ssid, "engine", "1", 0) < 0) 1523 return -1; 1524 } else 1525#endif /* ANDROID */ 1526 if (cred->private_key && cred->private_key[0] && 1527 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0) 1528 return -1; 1529 1530 if (cred->private_key_passwd && cred->private_key_passwd[0] && 1531 wpa_config_set_quoted(ssid, "private_key_passwd", 1532 cred->private_key_passwd) < 0) 1533 return -1; 1534 1535 if (cred->phase1) { 1536 os_free(ssid->eap.phase1); 1537 ssid->eap.phase1 = os_strdup(cred->phase1); 1538 } 1539 if (cred->phase2) { 1540 os_free(ssid->eap.phase2); 1541 ssid->eap.phase2 = os_strdup(cred->phase2); 1542 } 1543 1544 if (cred->ca_cert && cred->ca_cert[0] && 1545 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0) 1546 return -1; 1547 1548 if (cred->domain_suffix_match && cred->domain_suffix_match[0] && 1549 wpa_config_set_quoted(ssid, "domain_suffix_match", 1550 cred->domain_suffix_match) < 0) 1551 return -1; 1552 1553 ssid->eap.ocsp = cred->ocsp; 1554 1555 return 0; 1556} 1557 1558 1559static int interworking_connect_roaming_consortium( 1560 struct wpa_supplicant *wpa_s, struct wpa_cred *cred, 1561 struct wpa_bss *bss, int only_add) 1562{ 1563 struct wpa_ssid *ssid; 1564 const u8 *ie; 1565 const struct wpabuf *anqp; 1566 unsigned int i; 1567 1568 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR 1569 " based on roaming consortium match", MAC2STR(bss->bssid)); 1570 1571 if (already_connected(wpa_s, cred, bss)) { 1572 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 1573 MAC2STR(bss->bssid)); 1574 return wpa_s->current_ssid->id; 1575 } 1576 1577 remove_duplicate_network(wpa_s, cred, bss); 1578 1579 ssid = wpa_config_add_network(wpa_s->conf); 1580 if (ssid == NULL) 1581 return -1; 1582 ssid->parent_cred = cred; 1583 wpas_notify_network_added(wpa_s, ssid); 1584 wpa_config_set_network_defaults(ssid); 1585 ssid->priority = cred->priority; 1586 ssid->temporary = 1; 1587 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1588 if (ssid->ssid == NULL) 1589 goto fail; 1590 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1591 ssid->ssid_len = bss->ssid_len; 1592 1593 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1594 goto fail; 1595 1596 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM); 1597 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL; 1598 for (i = 0; (ie || anqp) && i < cred->num_roaming_consortiums; i++) { 1599 if (!roaming_consortium_match( 1600 ie, anqp, cred->roaming_consortiums[i], 1601 cred->roaming_consortiums_len[i])) 1602 continue; 1603 1604 ssid->roaming_consortium_selection = 1605 os_malloc(cred->roaming_consortiums_len[i]); 1606 if (!ssid->roaming_consortium_selection) 1607 goto fail; 1608 os_memcpy(ssid->roaming_consortium_selection, 1609 cred->roaming_consortiums[i], 1610 cred->roaming_consortiums_len[i]); 1611 ssid->roaming_consortium_selection_len = 1612 cred->roaming_consortiums_len[i]; 1613 break; 1614 } 1615 1616 if (cred->eap_method == NULL) { 1617 wpa_msg(wpa_s, MSG_DEBUG, 1618 "Interworking: No EAP method set for credential using roaming consortium"); 1619 goto fail; 1620 } 1621 1622 if (interworking_set_eap_params( 1623 ssid, cred, 1624 cred->eap_method->vendor == EAP_VENDOR_IETF && 1625 cred->eap_method->method == EAP_TYPE_TTLS) < 0) 1626 goto fail; 1627 1628 wpa_s->next_ssid = ssid; 1629 wpa_config_update_prio_list(wpa_s->conf); 1630 if (!only_add) 1631 interworking_reconnect(wpa_s); 1632 1633 return ssid->id; 1634 1635fail: 1636 wpas_notify_network_removed(wpa_s, ssid); 1637 wpa_config_remove_network(wpa_s->conf, ssid->id); 1638 return -1; 1639} 1640 1641 1642int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 1643 int only_add) 1644{ 1645 struct wpa_cred *cred, *cred_rc, *cred_3gpp; 1646 struct wpa_ssid *ssid; 1647 struct nai_realm *realm; 1648 struct nai_realm_eap *eap = NULL; 1649 u16 count, i; 1650 char buf[100]; 1651 int excluded = 0, *excl = &excluded; 1652 const char *name; 1653 1654 if (wpa_s->conf->cred == NULL || bss == NULL) 1655 return -1; 1656 if (disallowed_bssid(wpa_s, bss->bssid) || 1657 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 1658 wpa_msg(wpa_s, MSG_DEBUG, 1659 "Interworking: Reject connection to disallowed BSS " 1660 MACSTR, MAC2STR(bss->bssid)); 1661 return -1; 1662 } 1663 1664 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR 1665 " for connection", 1666 MAC2STR(bss->bssid)); 1667 1668 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { 1669 /* 1670 * We currently support only HS 2.0 networks and those are 1671 * required to use WPA2-Enterprise. 1672 */ 1673 wpa_msg(wpa_s, MSG_DEBUG, 1674 "Interworking: Network does not use RSN"); 1675 return -1; 1676 } 1677 1678 cred_rc = interworking_credentials_available_roaming_consortium( 1679 wpa_s, bss, 0, excl); 1680 if (cred_rc) { 1681 wpa_msg(wpa_s, MSG_DEBUG, 1682 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d", 1683 cred_rc->priority, cred_rc->sp_priority); 1684 if (excl && !(*excl)) 1685 excl = NULL; 1686 } 1687 1688 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl); 1689 if (cred) { 1690 wpa_msg(wpa_s, MSG_DEBUG, 1691 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d", 1692 cred->priority, cred->sp_priority); 1693 if (excl && !(*excl)) 1694 excl = NULL; 1695 } 1696 1697 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0, 1698 excl); 1699 if (cred_3gpp) { 1700 wpa_msg(wpa_s, MSG_DEBUG, 1701 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d", 1702 cred_3gpp->priority, cred_3gpp->sp_priority); 1703 if (excl && !(*excl)) 1704 excl = NULL; 1705 } 1706 1707 if (!cred_rc && !cred && !cred_3gpp) { 1708 wpa_msg(wpa_s, MSG_DEBUG, 1709 "Interworking: No full credential matches - consider options without BW(etc.) limits"); 1710 cred_rc = interworking_credentials_available_roaming_consortium( 1711 wpa_s, bss, 1, excl); 1712 if (cred_rc) { 1713 wpa_msg(wpa_s, MSG_DEBUG, 1714 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)", 1715 cred_rc->priority, cred_rc->sp_priority); 1716 if (excl && !(*excl)) 1717 excl = NULL; 1718 } 1719 1720 cred = interworking_credentials_available_realm(wpa_s, bss, 1, 1721 excl); 1722 if (cred) { 1723 wpa_msg(wpa_s, MSG_DEBUG, 1724 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)", 1725 cred->priority, cred->sp_priority); 1726 if (excl && !(*excl)) 1727 excl = NULL; 1728 } 1729 1730 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 1731 1, excl); 1732 if (cred_3gpp) { 1733 wpa_msg(wpa_s, MSG_DEBUG, 1734 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)", 1735 cred_3gpp->priority, cred_3gpp->sp_priority); 1736 if (excl && !(*excl)) 1737 excl = NULL; 1738 } 1739 } 1740 1741 if (cred_rc && 1742 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) && 1743 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0)) 1744 return interworking_connect_roaming_consortium(wpa_s, cred_rc, 1745 bss, only_add); 1746 1747 if (cred_3gpp && 1748 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) { 1749 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss, 1750 only_add); 1751 } 1752 1753 if (cred == NULL) { 1754 wpa_msg(wpa_s, MSG_DEBUG, 1755 "Interworking: No matching credentials found for " 1756 MACSTR, MAC2STR(bss->bssid)); 1757 return -1; 1758 } 1759 1760 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL, 1761 &count); 1762 if (realm == NULL) { 1763 wpa_msg(wpa_s, MSG_DEBUG, 1764 "Interworking: Could not parse NAI Realm list from " 1765 MACSTR, MAC2STR(bss->bssid)); 1766 return -1; 1767 } 1768 1769 for (i = 0; i < count; i++) { 1770 if (!nai_realm_match(&realm[i], cred->realm)) 1771 continue; 1772 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]); 1773 if (eap) 1774 break; 1775 } 1776 1777 if (!eap) { 1778 wpa_msg(wpa_s, MSG_DEBUG, 1779 "Interworking: No matching credentials and EAP method found for " 1780 MACSTR, MAC2STR(bss->bssid)); 1781 nai_realm_free(realm, count); 1782 return -1; 1783 } 1784 1785 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR, 1786 MAC2STR(bss->bssid)); 1787 1788 if (already_connected(wpa_s, cred, bss)) { 1789 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR, 1790 MAC2STR(bss->bssid)); 1791 nai_realm_free(realm, count); 1792 return 0; 1793 } 1794 1795 remove_duplicate_network(wpa_s, cred, bss); 1796 1797 ssid = wpa_config_add_network(wpa_s->conf); 1798 if (ssid == NULL) { 1799 nai_realm_free(realm, count); 1800 return -1; 1801 } 1802 ssid->parent_cred = cred; 1803 wpas_notify_network_added(wpa_s, ssid); 1804 wpa_config_set_network_defaults(ssid); 1805 ssid->priority = cred->priority; 1806 ssid->temporary = 1; 1807 ssid->ssid = os_zalloc(bss->ssid_len + 1); 1808 if (ssid->ssid == NULL) 1809 goto fail; 1810 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 1811 ssid->ssid_len = bss->ssid_len; 1812 1813 if (interworking_set_hs20_params(wpa_s, ssid) < 0) 1814 goto fail; 1815 1816 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF, 1817 eap->method), 0) < 0) 1818 goto fail; 1819 1820 switch (eap->method) { 1821 case EAP_TYPE_TTLS: 1822 if (eap->inner_method) { 1823 name = eap_get_name(EAP_VENDOR_IETF, eap->inner_method); 1824 if (!name) 1825 goto fail; 1826 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", name); 1827 if (wpa_config_set(ssid, "phase2", buf, 0) < 0) 1828 goto fail; 1829 break; 1830 } 1831 switch (eap->inner_non_eap) { 1832 case NAI_REALM_INNER_NON_EAP_PAP: 1833 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) < 1834 0) 1835 goto fail; 1836 break; 1837 case NAI_REALM_INNER_NON_EAP_CHAP: 1838 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0) 1839 < 0) 1840 goto fail; 1841 break; 1842 case NAI_REALM_INNER_NON_EAP_MSCHAP: 1843 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"", 1844 0) < 0) 1845 goto fail; 1846 break; 1847 case NAI_REALM_INNER_NON_EAP_MSCHAPV2: 1848 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", 1849 0) < 0) 1850 goto fail; 1851 break; 1852 default: 1853 /* EAP params were not set - assume TTLS/MSCHAPv2 */ 1854 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"", 1855 0) < 0) 1856 goto fail; 1857 break; 1858 } 1859 break; 1860 case EAP_TYPE_PEAP: 1861 case EAP_TYPE_FAST: 1862 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"", 1863 0) < 0) 1864 goto fail; 1865 if (wpa_config_set(ssid, "pac_file", 1866 "\"blob://pac_interworking\"", 0) < 0) 1867 goto fail; 1868 name = eap_get_name(EAP_VENDOR_IETF, 1869 eap->inner_method ? eap->inner_method : 1870 EAP_TYPE_MSCHAPV2); 1871 if (name == NULL) 1872 goto fail; 1873 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name); 1874 if (wpa_config_set(ssid, "phase2", buf, 0) < 0) 1875 goto fail; 1876 break; 1877 case EAP_TYPE_TLS: 1878 break; 1879 } 1880 1881 if (interworking_set_eap_params(ssid, cred, 1882 eap->method == EAP_TYPE_TTLS) < 0) 1883 goto fail; 1884 1885 nai_realm_free(realm, count); 1886 1887 wpa_s->next_ssid = ssid; 1888 wpa_config_update_prio_list(wpa_s->conf); 1889 if (!only_add) 1890 interworking_reconnect(wpa_s); 1891 1892 return ssid->id; 1893 1894fail: 1895 wpas_notify_network_removed(wpa_s, ssid); 1896 wpa_config_remove_network(wpa_s->conf, ssid->id); 1897 nai_realm_free(realm, count); 1898 return -1; 1899} 1900 1901 1902#ifdef PCSC_FUNCS 1903static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s) 1904{ 1905 size_t len; 1906 1907 if (wpa_s->imsi[0] && wpa_s->mnc_len) 1908 return 0; 1909 1910 len = sizeof(wpa_s->imsi) - 1; 1911 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 1912 scard_deinit(wpa_s->scard); 1913 wpa_s->scard = NULL; 1914 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 1915 return -1; 1916 } 1917 wpa_s->imsi[len] = '\0'; 1918 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 1919 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 1920 wpa_s->imsi, wpa_s->mnc_len); 1921 1922 return 0; 1923} 1924#endif /* PCSC_FUNCS */ 1925 1926 1927static struct wpa_cred * interworking_credentials_available_3gpp( 1928 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 1929 int *excluded) 1930{ 1931 struct wpa_cred *selected = NULL; 1932#ifdef INTERWORKING_3GPP 1933 struct wpa_cred *cred; 1934 int ret; 1935 int is_excluded = 0; 1936 1937 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) { 1938 wpa_msg(wpa_s, MSG_DEBUG, 1939 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p", 1940 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL); 1941 return NULL; 1942 } 1943 1944#ifdef CONFIG_EAP_PROXY 1945 if (!wpa_s->imsi[0]) { 1946 size_t len; 1947 wpa_msg(wpa_s, MSG_DEBUG, 1948 "Interworking: IMSI not available - try to read again through eap_proxy"); 1949 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1, 1950 wpa_s->imsi, 1951 &len); 1952 if (wpa_s->mnc_len > 0) { 1953 wpa_s->imsi[len] = '\0'; 1954 wpa_msg(wpa_s, MSG_DEBUG, 1955 "eap_proxy: IMSI %s (MNC length %d)", 1956 wpa_s->imsi, wpa_s->mnc_len); 1957 } else { 1958 wpa_msg(wpa_s, MSG_DEBUG, 1959 "eap_proxy: IMSI not available"); 1960 } 1961 } 1962#endif /* CONFIG_EAP_PROXY */ 1963 1964 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 1965 char *sep; 1966 const char *imsi; 1967 int mnc_len; 1968 char imsi_buf[16]; 1969 size_t msin_len; 1970 1971#ifdef PCSC_FUNCS 1972 if (cred->pcsc && wpa_s->scard) { 1973 if (interworking_pcsc_read_imsi(wpa_s) < 0) 1974 continue; 1975 imsi = wpa_s->imsi; 1976 mnc_len = wpa_s->mnc_len; 1977 goto compare; 1978 } 1979#endif /* PCSC_FUNCS */ 1980#ifdef CONFIG_EAP_PROXY 1981 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { 1982 imsi = wpa_s->imsi; 1983 mnc_len = wpa_s->mnc_len; 1984 goto compare; 1985 } 1986#endif /* CONFIG_EAP_PROXY */ 1987 1988 if (cred->imsi == NULL || !cred->imsi[0] || 1989 (!wpa_s->conf->external_sim && 1990 (cred->milenage == NULL || !cred->milenage[0]))) 1991 continue; 1992 1993 sep = os_strchr(cred->imsi, '-'); 1994 if (sep == NULL || 1995 (sep - cred->imsi != 5 && sep - cred->imsi != 6)) 1996 continue; 1997 mnc_len = sep - cred->imsi - 3; 1998 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len); 1999 sep++; 2000 msin_len = os_strlen(cred->imsi); 2001 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1) 2002 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1; 2003 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len); 2004 imsi_buf[3 + mnc_len + msin_len] = '\0'; 2005 imsi = imsi_buf; 2006 2007#if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY) 2008 compare: 2009#endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */ 2010 wpa_msg(wpa_s, MSG_DEBUG, 2011 "Interworking: Parsing 3GPP info from " MACSTR, 2012 MAC2STR(bss->bssid)); 2013 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len); 2014 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound", 2015 ret ? "" : "not "); 2016 if (ret) { 2017 if (cred_no_required_oi_match(cred, bss)) 2018 continue; 2019 if (!ignore_bw && 2020 cred_below_min_backhaul(wpa_s, cred, bss)) 2021 continue; 2022 if (!ignore_bw && 2023 cred_over_max_bss_load(wpa_s, cred, bss)) 2024 continue; 2025 if (!ignore_bw && 2026 cred_conn_capab_missing(wpa_s, cred, bss)) 2027 continue; 2028 if (cred_excluded_ssid(cred, bss)) { 2029 if (excluded == NULL) 2030 continue; 2031 if (selected == NULL) { 2032 selected = cred; 2033 is_excluded = 1; 2034 } 2035 } else { 2036 if (selected == NULL || is_excluded || 2037 cred_prio_cmp(selected, cred) < 0) { 2038 selected = cred; 2039 is_excluded = 0; 2040 } 2041 } 2042 } 2043 } 2044 2045 if (excluded) 2046 *excluded = is_excluded; 2047#endif /* INTERWORKING_3GPP */ 2048 return selected; 2049} 2050 2051 2052static struct wpa_cred * interworking_credentials_available_realm( 2053 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 2054 int *excluded) 2055{ 2056 struct wpa_cred *cred, *selected = NULL; 2057 struct nai_realm *realm; 2058 u16 count, i; 2059 int is_excluded = 0; 2060 2061 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL) 2062 return NULL; 2063 2064 if (wpa_s->conf->cred == NULL) 2065 return NULL; 2066 2067 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from " 2068 MACSTR, MAC2STR(bss->bssid)); 2069 realm = nai_realm_parse(bss->anqp->nai_realm, &count); 2070 if (realm == NULL) { 2071 wpa_msg(wpa_s, MSG_DEBUG, 2072 "Interworking: Could not parse NAI Realm list from " 2073 MACSTR, MAC2STR(bss->bssid)); 2074 return NULL; 2075 } 2076 2077 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 2078 if (cred->realm == NULL) 2079 continue; 2080 2081 for (i = 0; i < count; i++) { 2082 if (!nai_realm_match(&realm[i], cred->realm)) 2083 continue; 2084 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) { 2085 if (cred_no_required_oi_match(cred, bss)) 2086 continue; 2087 if (!ignore_bw && 2088 cred_below_min_backhaul(wpa_s, cred, bss)) 2089 continue; 2090 if (!ignore_bw && 2091 cred_over_max_bss_load(wpa_s, cred, bss)) 2092 continue; 2093 if (!ignore_bw && 2094 cred_conn_capab_missing(wpa_s, cred, bss)) 2095 continue; 2096 if (cred_excluded_ssid(cred, bss)) { 2097 if (excluded == NULL) 2098 continue; 2099 if (selected == NULL) { 2100 selected = cred; 2101 is_excluded = 1; 2102 } 2103 } else { 2104 if (selected == NULL || is_excluded || 2105 cred_prio_cmp(selected, cred) < 0) 2106 { 2107 selected = cred; 2108 is_excluded = 0; 2109 } 2110 } 2111 break; 2112 } else { 2113 wpa_msg(wpa_s, MSG_DEBUG, 2114 "Interworking: realm-find-eap returned false"); 2115 } 2116 } 2117 } 2118 2119 nai_realm_free(realm, count); 2120 2121 if (excluded) 2122 *excluded = is_excluded; 2123 2124 return selected; 2125} 2126 2127 2128static struct wpa_cred * interworking_credentials_available_helper( 2129 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw, 2130 int *excluded) 2131{ 2132 struct wpa_cred *cred, *cred2; 2133 int excluded1, excluded2 = 0; 2134 2135 if (disallowed_bssid(wpa_s, bss->bssid) || 2136 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) { 2137 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS " 2138 MACSTR, MAC2STR(bss->bssid)); 2139 return NULL; 2140 } 2141 2142 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw, 2143 &excluded1); 2144 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw, 2145 &excluded2); 2146 if (cred && cred2 && 2147 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { 2148 cred = cred2; 2149 excluded1 = excluded2; 2150 } 2151 if (!cred) { 2152 cred = cred2; 2153 excluded1 = excluded2; 2154 } 2155 2156 cred2 = interworking_credentials_available_roaming_consortium( 2157 wpa_s, bss, ignore_bw, &excluded2); 2158 if (cred && cred2 && 2159 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) { 2160 cred = cred2; 2161 excluded1 = excluded2; 2162 } 2163 if (!cred) { 2164 cred = cred2; 2165 excluded1 = excluded2; 2166 } 2167 2168 if (excluded) 2169 *excluded = excluded1; 2170 return cred; 2171} 2172 2173 2174static struct wpa_cred * interworking_credentials_available( 2175 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded) 2176{ 2177 struct wpa_cred *cred; 2178 2179 if (excluded) 2180 *excluded = 0; 2181 cred = interworking_credentials_available_helper(wpa_s, bss, 0, 2182 excluded); 2183 if (cred) 2184 return cred; 2185 return interworking_credentials_available_helper(wpa_s, bss, 1, 2186 excluded); 2187} 2188 2189 2190int domain_name_list_contains(struct wpabuf *domain_names, 2191 const char *domain, int exact_match) 2192{ 2193 const u8 *pos, *end; 2194 size_t len; 2195 2196 len = os_strlen(domain); 2197 pos = wpabuf_head(domain_names); 2198 end = pos + wpabuf_len(domain_names); 2199 2200 while (end - pos > 1) { 2201 u8 elen; 2202 2203 elen = *pos++; 2204 if (elen > end - pos) 2205 break; 2206 2207 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name", 2208 pos, elen); 2209 if (elen == len && 2210 os_strncasecmp(domain, (const char *) pos, len) == 0) 2211 return 1; 2212 if (!exact_match && elen > len && pos[elen - len - 1] == '.') { 2213 const char *ap = (const char *) pos; 2214 int offset = elen - len; 2215 2216 if (os_strncasecmp(domain, ap + offset, len) == 0) 2217 return 1; 2218 } 2219 2220 pos += elen; 2221 } 2222 2223 return 0; 2224} 2225 2226 2227int interworking_home_sp_cred(struct wpa_supplicant *wpa_s, 2228 struct wpa_cred *cred, 2229 struct wpabuf *domain_names) 2230{ 2231 size_t i; 2232 int ret = -1; 2233#ifdef INTERWORKING_3GPP 2234 char nai[100], *realm; 2235 2236 char *imsi = NULL; 2237 int mnc_len = 0; 2238 if (cred->imsi) 2239 imsi = cred->imsi; 2240#ifdef PCSC_FUNCS 2241 else if (cred->pcsc && wpa_s->scard) { 2242 if (interworking_pcsc_read_imsi(wpa_s) < 0) 2243 return -1; 2244 imsi = wpa_s->imsi; 2245 mnc_len = wpa_s->mnc_len; 2246 } 2247#endif /* PCSC_FUNCS */ 2248#ifdef CONFIG_EAP_PROXY 2249 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) { 2250 imsi = wpa_s->imsi; 2251 mnc_len = wpa_s->mnc_len; 2252 } 2253#endif /* CONFIG_EAP_PROXY */ 2254 if (domain_names && 2255 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) { 2256 realm = os_strchr(nai, '@'); 2257 if (realm) 2258 realm++; 2259 wpa_msg(wpa_s, MSG_DEBUG, 2260 "Interworking: Search for match with SIM/USIM domain %s", 2261 realm); 2262 if (realm && 2263 domain_name_list_contains(domain_names, realm, 1)) 2264 return 1; 2265 if (realm) 2266 ret = 0; 2267 } 2268#endif /* INTERWORKING_3GPP */ 2269 2270 if (domain_names == NULL || cred->domain == NULL) 2271 return ret; 2272 2273 for (i = 0; i < cred->num_domain; i++) { 2274 wpa_msg(wpa_s, MSG_DEBUG, 2275 "Interworking: Search for match with home SP FQDN %s", 2276 cred->domain[i]); 2277 if (domain_name_list_contains(domain_names, cred->domain[i], 1)) 2278 return 1; 2279 } 2280 2281 return 0; 2282} 2283 2284 2285static int interworking_home_sp(struct wpa_supplicant *wpa_s, 2286 struct wpabuf *domain_names) 2287{ 2288 struct wpa_cred *cred; 2289 2290 if (domain_names == NULL || wpa_s->conf->cred == NULL) 2291 return -1; 2292 2293 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 2294 int res = interworking_home_sp_cred(wpa_s, cred, domain_names); 2295 if (res) 2296 return res; 2297 } 2298 2299 return 0; 2300} 2301 2302 2303static int interworking_find_network_match(struct wpa_supplicant *wpa_s) 2304{ 2305 struct wpa_bss *bss; 2306 struct wpa_ssid *ssid; 2307 2308 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2309 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 2310 if (wpas_network_disabled(wpa_s, ssid) || 2311 ssid->mode != WPAS_MODE_INFRA) 2312 continue; 2313 if (ssid->ssid_len != bss->ssid_len || 2314 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) != 2315 0) 2316 continue; 2317 /* 2318 * TODO: Consider more accurate matching of security 2319 * configuration similarly to what is done in events.c 2320 */ 2321 return 1; 2322 } 2323 } 2324 2325 return 0; 2326} 2327 2328 2329static int roaming_partner_match(struct wpa_supplicant *wpa_s, 2330 struct roaming_partner *partner, 2331 struct wpabuf *domain_names) 2332{ 2333 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'", 2334 partner->fqdn, partner->exact_match, partner->priority, 2335 partner->country); 2336 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names", 2337 wpabuf_head(domain_names), 2338 wpabuf_len(domain_names)); 2339 if (!domain_name_list_contains(domain_names, partner->fqdn, 2340 partner->exact_match)) 2341 return 0; 2342 /* TODO: match Country */ 2343 return 1; 2344} 2345 2346 2347static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred, 2348 struct wpa_bss *bss) 2349{ 2350 size_t i; 2351 2352 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) { 2353 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128"); 2354 return 128; /* cannot check preference with domain name */ 2355 } 2356 2357 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0) 2358 { 2359 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority"); 2360 return 0; /* max preference for home SP network */ 2361 } 2362 2363 for (i = 0; i < cred->num_roaming_partner; i++) { 2364 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i], 2365 bss->anqp->domain_name)) { 2366 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u", 2367 cred->roaming_partner[i].priority); 2368 return cred->roaming_partner[i].priority; 2369 } 2370 } 2371 2372 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128"); 2373 return 128; 2374} 2375 2376 2377static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s, 2378 struct wpa_bss *selected, 2379 struct wpa_cred *cred) 2380{ 2381 struct wpa_bss *bss; 2382 u8 best_prio, prio; 2383 struct wpa_cred *cred2; 2384 2385 /* 2386 * Check if any other BSS is operated by a more preferred roaming 2387 * partner. 2388 */ 2389 2390 best_prio = roaming_prio(wpa_s, cred, selected); 2391 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS " 2392 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid), 2393 cred->id); 2394 2395 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2396 if (bss == selected) 2397 continue; 2398 cred2 = interworking_credentials_available(wpa_s, bss, NULL); 2399 if (!cred2) 2400 continue; 2401 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) 2402 continue; 2403 prio = roaming_prio(wpa_s, cred2, bss); 2404 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS " 2405 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid), 2406 cred2->id); 2407 if (prio < best_prio) { 2408 int bh1, bh2, load1, load2, conn1, conn2; 2409 bh1 = cred_below_min_backhaul(wpa_s, cred, selected); 2410 load1 = cred_over_max_bss_load(wpa_s, cred, selected); 2411 conn1 = cred_conn_capab_missing(wpa_s, cred, selected); 2412 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss); 2413 load2 = cred_over_max_bss_load(wpa_s, cred2, bss); 2414 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss); 2415 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d", 2416 bh1, load1, conn1, bh2, load2, conn2); 2417 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) { 2418 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid)); 2419 best_prio = prio; 2420 selected = bss; 2421 } 2422 } 2423 } 2424 2425 return selected; 2426} 2427 2428 2429static void interworking_select_network(struct wpa_supplicant *wpa_s) 2430{ 2431 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL; 2432 struct wpa_bss *selected2 = NULL, *selected2_home = NULL; 2433 unsigned int count = 0; 2434 const char *type; 2435 int res; 2436 struct wpa_cred *cred, *selected_cred = NULL; 2437 struct wpa_cred *selected_home_cred = NULL; 2438 struct wpa_cred *selected2_cred = NULL; 2439 struct wpa_cred *selected2_home_cred = NULL; 2440 2441 wpa_s->network_select = 0; 2442 2443 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)", 2444 wpa_s->auto_select); 2445 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2446 int excluded = 0; 2447 int bh, bss_load, conn_capab; 2448 cred = interworking_credentials_available(wpa_s, bss, 2449 &excluded); 2450 if (!cred) 2451 continue; 2452 2453 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) { 2454 /* 2455 * We currently support only HS 2.0 networks and those 2456 * are required to use WPA2-Enterprise. 2457 */ 2458 wpa_msg(wpa_s, MSG_DEBUG, 2459 "Interworking: Credential match with " MACSTR 2460 " but network does not use RSN", 2461 MAC2STR(bss->bssid)); 2462 continue; 2463 } 2464 if (!excluded) 2465 count++; 2466 res = interworking_home_sp(wpa_s, bss->anqp ? 2467 bss->anqp->domain_name : NULL); 2468 if (res > 0) 2469 type = "home"; 2470 else if (res == 0) 2471 type = "roaming"; 2472 else 2473 type = "unknown"; 2474 bh = cred_below_min_backhaul(wpa_s, cred, bss); 2475 bss_load = cred_over_max_bss_load(wpa_s, cred, bss); 2476 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss); 2477 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d", 2478 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP, 2479 MAC2STR(bss->bssid), type, 2480 bh ? " below_min_backhaul=1" : "", 2481 bss_load ? " over_max_bss_load=1" : "", 2482 conn_capab ? " conn_capab_missing=1" : "", 2483 cred->id, cred->priority, cred->sp_priority); 2484 if (excluded) 2485 continue; 2486 if (wpa_s->auto_select || 2487 (wpa_s->conf->auto_interworking && 2488 wpa_s->auto_network_select)) { 2489 if (bh || bss_load || conn_capab) { 2490 if (selected2_cred == NULL || 2491 cred_prio_cmp(cred, selected2_cred) > 0) { 2492 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2"); 2493 selected2 = bss; 2494 selected2_cred = cred; 2495 } 2496 if (res > 0 && 2497 (selected2_home_cred == NULL || 2498 cred_prio_cmp(cred, selected2_home_cred) > 2499 0)) { 2500 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home"); 2501 selected2_home = bss; 2502 selected2_home_cred = cred; 2503 } 2504 } else { 2505 if (selected_cred == NULL || 2506 cred_prio_cmp(cred, selected_cred) > 0) { 2507 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected"); 2508 selected = bss; 2509 selected_cred = cred; 2510 } 2511 if (res > 0 && 2512 (selected_home_cred == NULL || 2513 cred_prio_cmp(cred, selected_home_cred) > 2514 0)) { 2515 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home"); 2516 selected_home = bss; 2517 selected_home_cred = cred; 2518 } 2519 } 2520 } 2521 } 2522 2523 if (selected_home && selected_home != selected && 2524 selected_home_cred && 2525 (selected_cred == NULL || 2526 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) { 2527 /* Prefer network operated by the Home SP */ 2528 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home"); 2529 selected = selected_home; 2530 selected_cred = selected_home_cred; 2531 } 2532 2533 if (!selected) { 2534 if (selected2_home) { 2535 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected"); 2536 selected = selected2_home; 2537 selected_cred = selected2_home_cred; 2538 } else if (selected2) { 2539 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected"); 2540 selected = selected2; 2541 selected_cred = selected2_cred; 2542 } 2543 } 2544 2545 if (count == 0) { 2546 /* 2547 * No matching network was found based on configured 2548 * credentials. Check whether any of the enabled network blocks 2549 * have matching APs. 2550 */ 2551 if (interworking_find_network_match(wpa_s)) { 2552 wpa_msg(wpa_s, MSG_DEBUG, 2553 "Interworking: Possible BSS match for enabled network configurations"); 2554 if (wpa_s->auto_select) { 2555 interworking_reconnect(wpa_s); 2556 return; 2557 } 2558 } 2559 2560 if (wpa_s->auto_network_select) { 2561 wpa_msg(wpa_s, MSG_DEBUG, 2562 "Interworking: Continue scanning after ANQP fetch"); 2563 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 2564 0); 2565 return; 2566 } 2567 2568 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network " 2569 "with matching credentials found"); 2570 if (wpa_s->wpa_state == WPA_SCANNING) 2571 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2572 } 2573 2574 if (selected) { 2575 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR, 2576 MAC2STR(selected->bssid)); 2577 selected = pick_best_roaming_partner(wpa_s, selected, 2578 selected_cred); 2579 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR 2580 " (after best roaming partner selection)", 2581 MAC2STR(selected->bssid)); 2582 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR, 2583 MAC2STR(selected->bssid)); 2584 interworking_connect(wpa_s, selected, 0); 2585 } else if (wpa_s->wpa_state == WPA_SCANNING) 2586 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2587} 2588 2589 2590static struct wpa_bss_anqp * 2591interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) 2592{ 2593 struct wpa_bss *other; 2594 2595 if (is_zero_ether_addr(bss->hessid)) 2596 return NULL; /* Cannot be in the same homegenous ESS */ 2597 2598 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) { 2599 if (other == bss) 2600 continue; 2601 if (other->anqp == NULL) 2602 continue; 2603 if (other->anqp->roaming_consortium == NULL && 2604 other->anqp->nai_realm == NULL && 2605 other->anqp->anqp_3gpp == NULL && 2606 other->anqp->domain_name == NULL) 2607 continue; 2608 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED)) 2609 continue; 2610 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0) 2611 continue; 2612 if (bss->ssid_len != other->ssid_len || 2613 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0) 2614 continue; 2615 2616 wpa_msg(wpa_s, MSG_DEBUG, 2617 "Interworking: Share ANQP data with already fetched BSSID " 2618 MACSTR " and " MACSTR, 2619 MAC2STR(other->bssid), MAC2STR(bss->bssid)); 2620 other->anqp->users++; 2621 return other->anqp; 2622 } 2623 2624 return NULL; 2625} 2626 2627 2628static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s) 2629{ 2630 struct wpa_bss *bss; 2631 int found = 0; 2632 2633 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - " 2634 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d", 2635 wpa_s->fetch_anqp_in_progress, 2636 wpa_s->fetch_osu_icon_in_progress); 2637 2638 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) { 2639 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch"); 2640 return; 2641 } 2642 2643#ifdef CONFIG_HS20 2644 if (wpa_s->fetch_osu_icon_in_progress) { 2645 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)"); 2646 hs20_next_osu_icon(wpa_s); 2647 return; 2648 } 2649#endif /* CONFIG_HS20 */ 2650 2651 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 2652 if (!(bss->caps & IEEE80211_CAP_ESS)) 2653 continue; 2654 if (!wpa_bss_ext_capab(bss, WLAN_EXT_CAPAB_INTERWORKING)) 2655 continue; /* AP does not support Interworking */ 2656 if (disallowed_bssid(wpa_s, bss->bssid) || 2657 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) 2658 continue; /* Disallowed BSS */ 2659 2660 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) { 2661 if (bss->anqp == NULL) { 2662 bss->anqp = interworking_match_anqp_info(wpa_s, 2663 bss); 2664 if (bss->anqp) { 2665 /* Shared data already fetched */ 2666 continue; 2667 } 2668 bss->anqp = wpa_bss_anqp_alloc(); 2669 if (bss->anqp == NULL) 2670 break; 2671 } 2672 found++; 2673 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED; 2674 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for " 2675 MACSTR " (HESSID " MACSTR ")", 2676 MAC2STR(bss->bssid), MAC2STR(bss->hessid)); 2677 interworking_anqp_send_req(wpa_s, bss); 2678 break; 2679 } 2680 } 2681 2682 if (found == 0) { 2683#ifdef CONFIG_HS20 2684 if (wpa_s->fetch_osu_info) { 2685 if (wpa_s->num_prov_found == 0 && 2686 wpa_s->fetch_osu_waiting_scan && 2687 wpa_s->num_osu_scans < 3) { 2688 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again"); 2689 hs20_start_osu_scan(wpa_s); 2690 return; 2691 } 2692 wpa_printf(MSG_DEBUG, "Interworking: Next icon"); 2693 hs20_osu_icon_fetch(wpa_s); 2694 return; 2695 } 2696#endif /* CONFIG_HS20 */ 2697 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed"); 2698 wpa_s->fetch_anqp_in_progress = 0; 2699 if (wpa_s->network_select) 2700 interworking_select_network(wpa_s); 2701 } 2702} 2703 2704 2705void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s) 2706{ 2707 struct wpa_bss *bss; 2708 2709 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) 2710 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED; 2711 2712 wpa_s->fetch_anqp_in_progress = 1; 2713 2714 /* 2715 * Start actual ANQP operation from eloop call to make sure the loop 2716 * does not end up using excessive recursion. 2717 */ 2718 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL); 2719} 2720 2721 2722int interworking_fetch_anqp(struct wpa_supplicant *wpa_s) 2723{ 2724 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) 2725 return 0; 2726 2727 wpa_s->network_select = 0; 2728 wpa_s->fetch_all_anqp = 1; 2729 wpa_s->fetch_osu_info = 0; 2730 2731 interworking_start_fetch_anqp(wpa_s); 2732 2733 return 0; 2734} 2735 2736 2737void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s) 2738{ 2739 if (!wpa_s->fetch_anqp_in_progress) 2740 return; 2741 2742 wpa_s->fetch_anqp_in_progress = 0; 2743} 2744 2745 2746int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, 2747 u16 info_ids[], size_t num_ids, u32 subtypes, 2748 u32 mbo_subtypes) 2749{ 2750 struct wpabuf *buf; 2751 struct wpabuf *extra_buf = NULL; 2752 int ret = 0; 2753 int freq; 2754 struct wpa_bss *bss; 2755 int res; 2756 2757 bss = wpa_bss_get_bssid(wpa_s, dst); 2758 if (!bss) { 2759 wpa_printf(MSG_WARNING, 2760 "ANQP: Cannot send query to unknown BSS " 2761 MACSTR, MAC2STR(dst)); 2762 return -1; 2763 } 2764 2765 wpa_bss_anqp_unshare_alloc(bss); 2766 freq = bss->freq; 2767 2768 wpa_msg(wpa_s, MSG_DEBUG, 2769 "ANQP: Query Request to " MACSTR " for %u id(s)", 2770 MAC2STR(dst), (unsigned int) num_ids); 2771 2772#ifdef CONFIG_HS20 2773 if (subtypes != 0) { 2774 extra_buf = wpabuf_alloc(100); 2775 if (extra_buf == NULL) 2776 return -1; 2777 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf); 2778 } 2779#endif /* CONFIG_HS20 */ 2780 2781#ifdef CONFIG_MBO 2782 if (mbo_subtypes) { 2783 struct wpabuf *mbo; 2784 2785 mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes); 2786 if (mbo) { 2787 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) { 2788 wpabuf_free(extra_buf); 2789 wpabuf_free(mbo); 2790 return -1; 2791 } 2792 wpabuf_put_buf(extra_buf, mbo); 2793 wpabuf_free(mbo); 2794 } 2795 } 2796#endif /* CONFIG_MBO */ 2797 2798 buf = anqp_build_req(info_ids, num_ids, extra_buf); 2799 wpabuf_free(extra_buf); 2800 if (buf == NULL) 2801 return -1; 2802 2803 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, anqp_resp_cb, wpa_s); 2804 if (res < 0) { 2805 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request"); 2806 wpabuf_free(buf); 2807 ret = -1; 2808 } else { 2809 wpa_msg(wpa_s, MSG_DEBUG, 2810 "ANQP: Query started with dialog token %u", res); 2811 } 2812 2813 return ret; 2814} 2815 2816 2817static void anqp_add_extra(struct wpa_supplicant *wpa_s, 2818 struct wpa_bss_anqp *anqp, u16 info_id, 2819 const u8 *data, size_t slen) 2820{ 2821 struct wpa_bss_anqp_elem *tmp, *elem = NULL; 2822 2823 if (!anqp) 2824 return; 2825 2826 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem, 2827 list) { 2828 if (tmp->infoid == info_id) { 2829 elem = tmp; 2830 break; 2831 } 2832 } 2833 2834 if (!elem) { 2835 elem = os_zalloc(sizeof(*elem)); 2836 if (!elem) 2837 return; 2838 elem->infoid = info_id; 2839 dl_list_add(&anqp->anqp_elems, &elem->list); 2840 } else { 2841 wpabuf_free(elem->payload); 2842 } 2843 2844 elem->payload = wpabuf_alloc_copy(data, slen); 2845 if (!elem->payload) { 2846 dl_list_del(&elem->list); 2847 os_free(elem); 2848 } 2849} 2850 2851 2852static void interworking_parse_venue_url(struct wpa_supplicant *wpa_s, 2853 const u8 *data, size_t len) 2854{ 2855 const u8 *pos = data, *end = data + len; 2856 char url[255]; 2857 2858 while (end - pos >= 2) { 2859 u8 slen, num; 2860 2861 slen = *pos++; 2862 if (slen < 1 || slen > end - pos) { 2863 wpa_printf(MSG_DEBUG, 2864 "ANQP: Truncated Venue URL Duple field"); 2865 return; 2866 } 2867 2868 num = *pos++; 2869 os_memcpy(url, pos, slen - 1); 2870 url[slen - 1] = '\0'; 2871 wpa_msg(wpa_s, MSG_INFO, RX_VENUE_URL "%u %s", num, url); 2872 pos += slen - 1; 2873 } 2874} 2875 2876 2877static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s, 2878 struct wpa_bss *bss, const u8 *sa, 2879 u16 info_id, 2880 const u8 *data, size_t slen, 2881 u8 dialog_token) 2882{ 2883 const u8 *pos = data; 2884 struct wpa_bss_anqp *anqp = NULL; 2885 u8 type; 2886 2887 if (bss) 2888 anqp = bss->anqp; 2889 2890 switch (info_id) { 2891 case ANQP_CAPABILITY_LIST: 2892 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2893 " ANQP Capability list", MAC2STR(sa)); 2894 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list", 2895 pos, slen); 2896 if (anqp) { 2897 wpabuf_free(anqp->capability_list); 2898 anqp->capability_list = wpabuf_alloc_copy(pos, slen); 2899 } 2900 break; 2901 case ANQP_VENUE_NAME: 2902 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2903 " Venue Name", MAC2STR(sa)); 2904 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen); 2905 if (anqp) { 2906 wpabuf_free(anqp->venue_name); 2907 anqp->venue_name = wpabuf_alloc_copy(pos, slen); 2908 } 2909 break; 2910 case ANQP_NETWORK_AUTH_TYPE: 2911 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2912 " Network Authentication Type information", 2913 MAC2STR(sa)); 2914 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication " 2915 "Type", pos, slen); 2916 if (anqp) { 2917 wpabuf_free(anqp->network_auth_type); 2918 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen); 2919 } 2920 break; 2921 case ANQP_ROAMING_CONSORTIUM: 2922 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2923 " Roaming Consortium list", MAC2STR(sa)); 2924 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium", 2925 pos, slen); 2926 if (anqp) { 2927 wpabuf_free(anqp->roaming_consortium); 2928 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen); 2929 } 2930 break; 2931 case ANQP_IP_ADDR_TYPE_AVAILABILITY: 2932 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2933 " IP Address Type Availability information", 2934 MAC2STR(sa)); 2935 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability", 2936 pos, slen); 2937 if (anqp) { 2938 wpabuf_free(anqp->ip_addr_type_availability); 2939 anqp->ip_addr_type_availability = 2940 wpabuf_alloc_copy(pos, slen); 2941 } 2942 break; 2943 case ANQP_NAI_REALM: 2944 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2945 " NAI Realm list", MAC2STR(sa)); 2946 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen); 2947 if (anqp) { 2948 wpabuf_free(anqp->nai_realm); 2949 anqp->nai_realm = wpabuf_alloc_copy(pos, slen); 2950 } 2951 break; 2952 case ANQP_3GPP_CELLULAR_NETWORK: 2953 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2954 " 3GPP Cellular Network information", MAC2STR(sa)); 2955 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network", 2956 pos, slen); 2957 if (anqp) { 2958 wpabuf_free(anqp->anqp_3gpp); 2959 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen); 2960 } 2961 break; 2962 case ANQP_DOMAIN_NAME: 2963 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2964 " Domain Name list", MAC2STR(sa)); 2965 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen); 2966 if (anqp) { 2967 wpabuf_free(anqp->domain_name); 2968 anqp->domain_name = wpabuf_alloc_copy(pos, slen); 2969 } 2970 break; 2971#ifdef CONFIG_FILS 2972 case ANQP_FILS_REALM_INFO: 2973 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR 2974 " FILS Realm Information", MAC2STR(sa)); 2975 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: FILS Realm Information", 2976 pos, slen); 2977 if (anqp) { 2978 wpabuf_free(anqp->fils_realm_info); 2979 anqp->fils_realm_info = wpabuf_alloc_copy(pos, slen); 2980 } 2981 break; 2982#endif /* CONFIG_FILS */ 2983 case ANQP_VENUE_URL: 2984 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR " Venue URL", 2985 MAC2STR(sa)); 2986 anqp_add_extra(wpa_s, anqp, info_id, pos, slen); 2987 2988 if (!pmf_in_use(wpa_s, sa)) { 2989 wpa_printf(MSG_DEBUG, 2990 "ANQP: Ignore Venue URL since PMF was not enabled"); 2991 break; 2992 } 2993 interworking_parse_venue_url(wpa_s, pos, slen); 2994 break; 2995 case ANQP_VENDOR_SPECIFIC: 2996 if (slen < 3) 2997 return; 2998 2999 switch (WPA_GET_BE24(pos)) { 3000 case OUI_WFA: 3001 pos += 3; 3002 slen -= 3; 3003 3004 if (slen < 1) 3005 return; 3006 type = *pos++; 3007 slen--; 3008 3009 switch (type) { 3010#ifdef CONFIG_HS20 3011 case HS20_ANQP_OUI_TYPE: 3012 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa, 3013 pos, slen, 3014 dialog_token); 3015 break; 3016#endif /* CONFIG_HS20 */ 3017#ifdef CONFIG_MBO 3018 case MBO_ANQP_OUI_TYPE: 3019 mbo_parse_rx_anqp_resp(wpa_s, bss, sa, 3020 pos, slen); 3021 break; 3022#endif /* CONFIG_MBO */ 3023 default: 3024 wpa_msg(wpa_s, MSG_DEBUG, 3025 "ANQP: Unsupported ANQP vendor type %u", 3026 type); 3027 break; 3028 } 3029 break; 3030 default: 3031 wpa_msg(wpa_s, MSG_DEBUG, 3032 "Interworking: Unsupported vendor-specific ANQP OUI %06x", 3033 WPA_GET_BE24(pos)); 3034 return; 3035 } 3036 break; 3037 default: 3038 wpa_msg(wpa_s, MSG_DEBUG, 3039 "Interworking: Unsupported ANQP Info ID %u", info_id); 3040 anqp_add_extra(wpa_s, anqp, info_id, data, slen); 3041 break; 3042 } 3043} 3044 3045 3046void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token, 3047 enum gas_query_result result, 3048 const struct wpabuf *adv_proto, 3049 const struct wpabuf *resp, u16 status_code) 3050{ 3051 struct wpa_supplicant *wpa_s = ctx; 3052 const u8 *pos; 3053 const u8 *end; 3054 u16 info_id; 3055 u16 slen; 3056 struct wpa_bss *bss = NULL, *tmp; 3057 const char *anqp_result = "SUCCESS"; 3058 3059 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR 3060 " dialog_token=%u result=%d status_code=%u", 3061 MAC2STR(dst), dialog_token, result, status_code); 3062 if (result != GAS_QUERY_SUCCESS) { 3063#ifdef CONFIG_HS20 3064 if (wpa_s->fetch_osu_icon_in_progress) 3065 hs20_icon_fetch_failed(wpa_s); 3066#endif /* CONFIG_HS20 */ 3067 anqp_result = "FAILURE"; 3068 goto out; 3069 } 3070 3071 pos = wpabuf_head(adv_proto); 3072 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO || 3073 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) { 3074 wpa_msg(wpa_s, MSG_DEBUG, 3075 "ANQP: Unexpected Advertisement Protocol in response"); 3076#ifdef CONFIG_HS20 3077 if (wpa_s->fetch_osu_icon_in_progress) 3078 hs20_icon_fetch_failed(wpa_s); 3079#endif /* CONFIG_HS20 */ 3080 anqp_result = "INVALID_FRAME"; 3081 goto out; 3082 } 3083 3084 /* 3085 * If possible, select the BSS entry based on which BSS entry was used 3086 * for the request. This can help in cases where multiple BSS entries 3087 * may exist for the same AP. 3088 */ 3089 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) { 3090 if (tmp == wpa_s->interworking_gas_bss && 3091 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) { 3092 bss = tmp; 3093 break; 3094 } 3095 } 3096 if (bss == NULL) 3097 bss = wpa_bss_get_bssid(wpa_s, dst); 3098 3099 pos = wpabuf_head(resp); 3100 end = pos + wpabuf_len(resp); 3101 3102 while (pos < end) { 3103 unsigned int left = end - pos; 3104 3105 if (left < 4) { 3106 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element"); 3107 anqp_result = "INVALID_FRAME"; 3108 goto out_parse_done; 3109 } 3110 info_id = WPA_GET_LE16(pos); 3111 pos += 2; 3112 slen = WPA_GET_LE16(pos); 3113 pos += 2; 3114 left -= 4; 3115 if (left < slen) { 3116 wpa_msg(wpa_s, MSG_DEBUG, 3117 "ANQP: Invalid element length for Info ID %u", 3118 info_id); 3119 anqp_result = "INVALID_FRAME"; 3120 goto out_parse_done; 3121 } 3122 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos, 3123 slen, dialog_token); 3124 pos += slen; 3125 } 3126 3127out_parse_done: 3128#ifdef CONFIG_HS20 3129 hs20_notify_parse_done(wpa_s); 3130#endif /* CONFIG_HS20 */ 3131out: 3132 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s", 3133 MAC2STR(dst), anqp_result); 3134} 3135 3136 3137static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s, 3138 struct wpa_scan_results *scan_res) 3139{ 3140 wpa_msg(wpa_s, MSG_DEBUG, 3141 "Interworking: Scan results available - start ANQP fetch"); 3142 interworking_start_fetch_anqp(wpa_s); 3143} 3144 3145 3146int interworking_select(struct wpa_supplicant *wpa_s, int auto_select, 3147 int *freqs) 3148{ 3149 interworking_stop_fetch_anqp(wpa_s); 3150 wpa_s->network_select = 1; 3151 wpa_s->auto_network_select = 0; 3152 wpa_s->auto_select = !!auto_select; 3153 wpa_s->fetch_all_anqp = 0; 3154 wpa_s->fetch_osu_info = 0; 3155 wpa_msg(wpa_s, MSG_DEBUG, 3156 "Interworking: Start scan for network selection"); 3157 wpa_s->scan_res_handler = interworking_scan_res_handler; 3158 wpa_s->normal_scans = 0; 3159 wpa_s->scan_req = MANUAL_SCAN_REQ; 3160 os_free(wpa_s->manual_scan_freqs); 3161 wpa_s->manual_scan_freqs = freqs; 3162 wpa_s->after_wps = 0; 3163 wpa_s->known_wps_freq = 0; 3164 wpa_supplicant_req_scan(wpa_s, 0, 0); 3165 3166 return 0; 3167} 3168 3169 3170static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token, 3171 enum gas_query_result result, 3172 const struct wpabuf *adv_proto, 3173 const struct wpabuf *resp, u16 status_code) 3174{ 3175 struct wpa_supplicant *wpa_s = ctx; 3176 struct wpabuf *n; 3177 3178 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR 3179 " dialog_token=%d status_code=%d resp_len=%d", 3180 MAC2STR(addr), dialog_token, status_code, 3181 resp ? (int) wpabuf_len(resp) : -1); 3182 if (!resp) 3183 return; 3184 3185 n = wpabuf_dup(resp); 3186 if (n == NULL) 3187 return; 3188 wpabuf_free(wpa_s->prev_gas_resp); 3189 wpa_s->prev_gas_resp = wpa_s->last_gas_resp; 3190 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN); 3191 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token; 3192 wpa_s->last_gas_resp = n; 3193 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN); 3194 wpa_s->last_gas_dialog_token = dialog_token; 3195} 3196 3197 3198int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst, 3199 const struct wpabuf *adv_proto, 3200 const struct wpabuf *query) 3201{ 3202 struct wpabuf *buf; 3203 int ret = 0; 3204 int freq; 3205 struct wpa_bss *bss; 3206 int res; 3207 size_t len; 3208 u8 query_resp_len_limit = 0; 3209 3210 freq = wpa_s->assoc_freq; 3211 bss = wpa_bss_get_bssid(wpa_s, dst); 3212 if (bss) 3213 freq = bss->freq; 3214 if (freq <= 0) 3215 return -1; 3216 3217 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)", 3218 MAC2STR(dst), freq); 3219 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto); 3220 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query); 3221 3222 len = 3 + wpabuf_len(adv_proto) + 2; 3223 if (query) 3224 len += wpabuf_len(query); 3225 buf = gas_build_initial_req(0, len); 3226 if (buf == NULL) 3227 return -1; 3228 3229 /* Advertisement Protocol IE */ 3230 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO); 3231 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */ 3232 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f); 3233 wpabuf_put_buf(buf, adv_proto); 3234 3235 /* GAS Query */ 3236 if (query) { 3237 wpabuf_put_le16(buf, wpabuf_len(query)); 3238 wpabuf_put_buf(buf, query); 3239 } else 3240 wpabuf_put_le16(buf, 0); 3241 3242 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, gas_resp_cb, wpa_s); 3243 if (res < 0) { 3244 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request"); 3245 wpabuf_free(buf); 3246 ret = -1; 3247 } else 3248 wpa_msg(wpa_s, MSG_DEBUG, 3249 "GAS: Query started with dialog token %u", res); 3250 3251 return ret; 3252} 3253