1 /* 2 * Copyright (c) 2009, Atheros Communications, Inc. 3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc. 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 #include <sys/stat.h> 11 12 #include "common.h" 13 #include "eloop.h" 14 #include "common/ieee802_11_common.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/gas.h" 17 #include "common/wpa_ctrl.h" 18 #include "rsn_supp/wpa.h" 19 #include "wpa_supplicant_i.h" 20 #include "driver_i.h" 21 #include "config.h" 22 #include "scan.h" 23 #include "bss.h" 24 #include "blacklist.h" 25 #include "gas_query.h" 26 #include "interworking.h" 27 #include "hs20_supplicant.h" 28 29 30 #define OSU_MAX_ITEMS 10 31 32 struct osu_lang_string { 33 char lang[4]; 34 char text[253]; 35 }; 36 37 struct osu_icon { 38 u16 width; 39 u16 height; 40 char lang[4]; 41 char icon_type[256]; 42 char filename[256]; 43 unsigned int id; 44 unsigned int failed:1; 45 }; 46 47 struct osu_provider { 48 u8 bssid[ETH_ALEN]; 49 u8 osu_ssid[SSID_MAX_LEN]; 50 u8 osu_ssid_len; 51 char server_uri[256]; 52 u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */ 53 char osu_nai[256]; 54 struct osu_lang_string friendly_name[OSU_MAX_ITEMS]; 55 size_t friendly_name_count; 56 struct osu_lang_string serv_desc[OSU_MAX_ITEMS]; 57 size_t serv_desc_count; 58 struct osu_icon icon[OSU_MAX_ITEMS]; 59 size_t icon_count; 60 }; 61 62 63 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id) 64 { 65 u8 conf; 66 67 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); 68 wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5); 69 wpabuf_put_be24(buf, OUI_WFA); 70 wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE); 71 conf = HS20_VERSION; 72 if (pps_mo_id >= 0) 73 conf |= HS20_PPS_MO_ID_PRESENT; 74 wpabuf_put_u8(buf, conf); 75 if (pps_mo_id >= 0) 76 wpabuf_put_le16(buf, pps_mo_id); 77 } 78 79 80 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 81 struct wpa_bss *bss) 82 { 83 if (!wpa_s->conf->hs20 || !ssid) 84 return 0; 85 86 if (ssid->parent_cred) 87 return 1; 88 89 if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) 90 return 0; 91 92 /* 93 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that 94 * than cause Hotspot 2.0 connections without indication element getting 95 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element. 96 */ 97 98 if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X)) 99 return 0; 100 if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP)) 101 return 0; 102 if (ssid->proto != WPA_PROTO_RSN) 103 return 0; 104 105 return 1; 106 } 107 108 109 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 110 { 111 struct wpa_cred *cred; 112 113 if (ssid == NULL) 114 return 0; 115 116 if (ssid->update_identifier) 117 return ssid->update_identifier; 118 119 if (ssid->parent_cred == NULL) 120 return 0; 121 122 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 123 if (ssid->parent_cred == cred) 124 return cred->update_identifier; 125 } 126 127 return 0; 128 } 129 130 131 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len, 132 struct wpabuf *buf) 133 { 134 u8 *len_pos; 135 136 if (buf == NULL) 137 return; 138 139 len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC); 140 wpabuf_put_be24(buf, OUI_WFA); 141 wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE); 142 if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) { 143 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY); 144 wpabuf_put_u8(buf, 0); /* Reserved */ 145 if (payload) 146 wpabuf_put_data(buf, payload, payload_len); 147 } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) { 148 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST); 149 wpabuf_put_u8(buf, 0); /* Reserved */ 150 if (payload) 151 wpabuf_put_data(buf, payload, payload_len); 152 } else { 153 u8 i; 154 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST); 155 wpabuf_put_u8(buf, 0); /* Reserved */ 156 for (i = 0; i < 32; i++) { 157 if (stypes & BIT(i)) 158 wpabuf_put_u8(buf, i); 159 } 160 } 161 gas_anqp_set_element_len(buf, len_pos); 162 163 gas_anqp_set_len(buf); 164 } 165 166 167 struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload, 168 size_t payload_len) 169 { 170 struct wpabuf *buf; 171 172 buf = gas_anqp_build_initial_req(0, 100 + payload_len); 173 if (buf == NULL) 174 return NULL; 175 176 hs20_put_anqp_req(stypes, payload, payload_len, buf); 177 178 return buf; 179 } 180 181 182 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes, 183 const u8 *payload, size_t payload_len) 184 { 185 struct wpabuf *buf; 186 int ret = 0; 187 int freq; 188 struct wpa_bss *bss; 189 int res; 190 191 bss = wpa_bss_get_bssid(wpa_s, dst); 192 if (!bss) { 193 wpa_printf(MSG_WARNING, 194 "ANQP: Cannot send query to unknown BSS " 195 MACSTR, MAC2STR(dst)); 196 return -1; 197 } 198 199 wpa_bss_anqp_unshare_alloc(bss); 200 freq = bss->freq; 201 202 wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for " 203 "subtypes 0x%x", MAC2STR(dst), stypes); 204 205 buf = hs20_build_anqp_req(stypes, payload, payload_len); 206 if (buf == NULL) 207 return -1; 208 209 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s); 210 if (res < 0) { 211 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); 212 wpabuf_free(buf); 213 ret = -1; 214 } else 215 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " 216 "%u", res); 217 218 return ret; 219 } 220 221 222 static void hs20_set_osu_access_permission(const char *osu_dir, 223 const char *fname) 224 { 225 struct stat statbuf; 226 227 /* Get OSU directory information */ 228 if (stat(osu_dir, &statbuf) < 0) { 229 wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s", 230 osu_dir); 231 return; 232 } 233 234 if (chmod(fname, statbuf.st_mode) < 0) { 235 wpa_printf(MSG_WARNING, 236 "Cannot change the permissions for %s", fname); 237 return; 238 } 239 240 if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) { 241 wpa_printf(MSG_WARNING, "Cannot change the ownership for %s", 242 fname); 243 } 244 } 245 246 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s, 247 const u8 *sa, const u8 *pos, 248 size_t slen) 249 { 250 char fname[256]; 251 int png; 252 FILE *f; 253 u16 data_len; 254 255 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File", 256 MAC2STR(sa)); 257 258 if (slen < 4) { 259 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 260 "value from " MACSTR, MAC2STR(sa)); 261 return -1; 262 } 263 264 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos); 265 if (*pos != 0) 266 return -1; 267 pos++; 268 slen--; 269 270 if ((size_t) 1 + pos[0] > slen) { 271 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 272 "value from " MACSTR, MAC2STR(sa)); 273 return -1; 274 } 275 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]); 276 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0; 277 slen -= 1 + pos[0]; 278 pos += 1 + pos[0]; 279 280 if (slen < 2) { 281 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 282 "value from " MACSTR, MAC2STR(sa)); 283 return -1; 284 } 285 data_len = WPA_GET_LE16(pos); 286 pos += 2; 287 slen -= 2; 288 289 if (data_len > slen) { 290 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 291 "value from " MACSTR, MAC2STR(sa)); 292 return -1; 293 } 294 295 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len); 296 if (wpa_s->conf->osu_dir == NULL) 297 return -1; 298 299 wpa_s->osu_icon_id++; 300 if (wpa_s->osu_icon_id == 0) 301 wpa_s->osu_icon_id++; 302 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s", 303 wpa_s->conf->osu_dir, wpa_s->osu_icon_id, 304 png ? "png" : "icon"); 305 f = fopen(fname, "wb"); 306 if (f == NULL) 307 return -1; 308 309 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 310 311 if (fwrite(pos, slen, 1, f) != 1) { 312 fclose(f); 313 unlink(fname); 314 return -1; 315 } 316 fclose(f); 317 318 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname); 319 return 0; 320 } 321 322 323 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx) 324 { 325 struct wpa_supplicant *wpa_s = eloop_ctx; 326 if (wpa_s->fetch_osu_icon_in_progress) 327 hs20_next_osu_icon(wpa_s); 328 } 329 330 331 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res) 332 { 333 size_t i, j; 334 struct os_reltime now, tmp; 335 int dur; 336 337 os_get_reltime(&now); 338 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp); 339 dur = tmp.sec * 1000 + tmp.usec / 1000; 340 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d", 341 dur, res); 342 343 for (i = 0; i < wpa_s->osu_prov_count; i++) { 344 struct osu_provider *osu = &wpa_s->osu_prov[i]; 345 for (j = 0; j < osu->icon_count; j++) { 346 struct osu_icon *icon = &osu->icon[j]; 347 if (icon->id || icon->failed) 348 continue; 349 if (res < 0) 350 icon->failed = 1; 351 else 352 icon->id = wpa_s->osu_icon_id; 353 return; 354 } 355 } 356 } 357 358 359 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s, 360 struct wpa_bss *bss, const u8 *sa, 361 const u8 *data, size_t slen) 362 { 363 const u8 *pos = data; 364 u8 subtype; 365 struct wpa_bss_anqp *anqp = NULL; 366 int ret; 367 368 if (slen < 2) 369 return; 370 371 if (bss) 372 anqp = bss->anqp; 373 374 subtype = *pos++; 375 slen--; 376 377 pos++; /* Reserved */ 378 slen--; 379 380 switch (subtype) { 381 case HS20_STYPE_CAPABILITY_LIST: 382 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 383 " HS Capability List", MAC2STR(sa)); 384 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); 385 if (anqp) { 386 wpabuf_free(anqp->hs20_capability_list); 387 anqp->hs20_capability_list = 388 wpabuf_alloc_copy(pos, slen); 389 } 390 break; 391 case HS20_STYPE_OPERATOR_FRIENDLY_NAME: 392 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 393 " Operator Friendly Name", MAC2STR(sa)); 394 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); 395 if (anqp) { 396 wpabuf_free(anqp->hs20_operator_friendly_name); 397 anqp->hs20_operator_friendly_name = 398 wpabuf_alloc_copy(pos, slen); 399 } 400 break; 401 case HS20_STYPE_WAN_METRICS: 402 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen); 403 if (slen < 13) { 404 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN " 405 "Metrics value from " MACSTR, MAC2STR(sa)); 406 break; 407 } 408 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 409 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa), 410 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5), 411 pos[9], pos[10], WPA_GET_LE16(pos + 11)); 412 if (anqp) { 413 wpabuf_free(anqp->hs20_wan_metrics); 414 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); 415 } 416 break; 417 case HS20_STYPE_CONNECTION_CAPABILITY: 418 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 419 " Connection Capability", MAC2STR(sa)); 420 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); 421 if (anqp) { 422 wpabuf_free(anqp->hs20_connection_capability); 423 anqp->hs20_connection_capability = 424 wpabuf_alloc_copy(pos, slen); 425 } 426 break; 427 case HS20_STYPE_OPERATING_CLASS: 428 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 429 " Operating Class", MAC2STR(sa)); 430 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); 431 if (anqp) { 432 wpabuf_free(anqp->hs20_operating_class); 433 anqp->hs20_operating_class = 434 wpabuf_alloc_copy(pos, slen); 435 } 436 break; 437 case HS20_STYPE_OSU_PROVIDERS_LIST: 438 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 439 " OSU Providers list", MAC2STR(sa)); 440 wpa_s->num_prov_found++; 441 if (anqp) { 442 wpabuf_free(anqp->hs20_osu_providers_list); 443 anqp->hs20_osu_providers_list = 444 wpabuf_alloc_copy(pos, slen); 445 } 446 break; 447 case HS20_STYPE_ICON_BINARY_FILE: 448 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen); 449 if (wpa_s->fetch_osu_icon_in_progress) { 450 hs20_osu_icon_fetch_result(wpa_s, ret); 451 eloop_cancel_timeout(hs20_continue_icon_fetch, 452 wpa_s, NULL); 453 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, 454 wpa_s, NULL); 455 } 456 break; 457 default: 458 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); 459 break; 460 } 461 } 462 463 464 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s) 465 { 466 if (!wpa_s->fetch_osu_icon_in_progress) 467 return; 468 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL)) 469 return; 470 /* 471 * We are going through icon fetch, but no icon response was received. 472 * Assume this means the current AP could not provide an answer to avoid 473 * getting stuck in fetch iteration. 474 */ 475 hs20_icon_fetch_failed(wpa_s); 476 } 477 478 479 static void hs20_free_osu_prov_entry(struct osu_provider *prov) 480 { 481 } 482 483 484 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s) 485 { 486 size_t i; 487 for (i = 0; i < wpa_s->osu_prov_count; i++) 488 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]); 489 os_free(wpa_s->osu_prov); 490 wpa_s->osu_prov = NULL; 491 wpa_s->osu_prov_count = 0; 492 } 493 494 495 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s) 496 { 497 char fname[256]; 498 FILE *f; 499 size_t i, j; 500 501 wpa_s->fetch_osu_info = 0; 502 wpa_s->fetch_osu_icon_in_progress = 0; 503 504 if (wpa_s->conf->osu_dir == NULL) { 505 hs20_free_osu_prov(wpa_s); 506 wpa_s->fetch_anqp_in_progress = 0; 507 return; 508 } 509 510 snprintf(fname, sizeof(fname), "%s/osu-providers.txt", 511 wpa_s->conf->osu_dir); 512 f = fopen(fname, "w"); 513 if (f == NULL) { 514 hs20_free_osu_prov(wpa_s); 515 return; 516 } 517 518 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 519 520 for (i = 0; i < wpa_s->osu_prov_count; i++) { 521 struct osu_provider *osu = &wpa_s->osu_prov[i]; 522 if (i > 0) 523 fprintf(f, "\n"); 524 fprintf(f, "OSU-PROVIDER " MACSTR "\n" 525 "uri=%s\n" 526 "methods=%08x\n", 527 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods); 528 if (osu->osu_ssid_len) { 529 fprintf(f, "osu_ssid=%s\n", 530 wpa_ssid_txt(osu->osu_ssid, 531 osu->osu_ssid_len)); 532 } 533 if (osu->osu_nai[0]) 534 fprintf(f, "osu_nai=%s\n", osu->osu_nai); 535 for (j = 0; j < osu->friendly_name_count; j++) { 536 fprintf(f, "friendly_name=%s:%s\n", 537 osu->friendly_name[j].lang, 538 osu->friendly_name[j].text); 539 } 540 for (j = 0; j < osu->serv_desc_count; j++) { 541 fprintf(f, "desc=%s:%s\n", 542 osu->serv_desc[j].lang, 543 osu->serv_desc[j].text); 544 } 545 for (j = 0; j < osu->icon_count; j++) { 546 struct osu_icon *icon = &osu->icon[j]; 547 if (icon->failed) 548 continue; /* could not fetch icon */ 549 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n", 550 icon->id, icon->width, icon->height, icon->lang, 551 icon->icon_type, icon->filename); 552 } 553 } 554 fclose(f); 555 hs20_free_osu_prov(wpa_s); 556 557 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed"); 558 wpa_s->fetch_anqp_in_progress = 0; 559 } 560 561 562 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s) 563 { 564 size_t i, j; 565 566 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon"); 567 568 for (i = 0; i < wpa_s->osu_prov_count; i++) { 569 struct osu_provider *osu = &wpa_s->osu_prov[i]; 570 for (j = 0; j < osu->icon_count; j++) { 571 struct osu_icon *icon = &osu->icon[j]; 572 if (icon->id || icon->failed) 573 continue; 574 575 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' " 576 "from " MACSTR, icon->filename, 577 MAC2STR(osu->bssid)); 578 os_get_reltime(&wpa_s->osu_icon_fetch_start); 579 if (hs20_anqp_send_req(wpa_s, osu->bssid, 580 BIT(HS20_STYPE_ICON_REQUEST), 581 (u8 *) icon->filename, 582 os_strlen(icon->filename)) < 0) { 583 icon->failed = 1; 584 continue; 585 } 586 return; 587 } 588 } 589 590 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch"); 591 hs20_osu_fetch_done(wpa_s); 592 } 593 594 595 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 596 const u8 *osu_ssid, u8 osu_ssid_len, 597 const u8 *pos, size_t len) 598 { 599 struct osu_provider *prov; 600 const u8 *end = pos + len; 601 u16 len2; 602 const u8 *pos2; 603 u8 uri_len, osu_method_len, osu_nai_len; 604 605 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len); 606 prov = os_realloc_array(wpa_s->osu_prov, 607 wpa_s->osu_prov_count + 1, 608 sizeof(*prov)); 609 if (prov == NULL) 610 return; 611 wpa_s->osu_prov = prov; 612 prov = &prov[wpa_s->osu_prov_count]; 613 os_memset(prov, 0, sizeof(*prov)); 614 615 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN); 616 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len); 617 prov->osu_ssid_len = osu_ssid_len; 618 619 /* OSU Friendly Name Length */ 620 if (pos + 2 > end) { 621 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 622 "Friendly Name Length"); 623 return; 624 } 625 len2 = WPA_GET_LE16(pos); 626 pos += 2; 627 if (len2 > end - pos) { 628 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 629 "Friendly Name Duples"); 630 return; 631 } 632 pos2 = pos; 633 pos += len2; 634 635 /* OSU Friendly Name Duples */ 636 while (pos2 + 4 <= pos && prov->friendly_name_count < OSU_MAX_ITEMS) { 637 struct osu_lang_string *f; 638 if (pos2 + 1 + pos2[0] > pos || pos2[0] < 3) { 639 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name"); 640 break; 641 } 642 f = &prov->friendly_name[prov->friendly_name_count++]; 643 os_memcpy(f->lang, pos2 + 1, 3); 644 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3); 645 pos2 += 1 + pos2[0]; 646 } 647 648 /* OSU Server URI */ 649 if (pos + 1 > end) { 650 wpa_printf(MSG_DEBUG, 651 "HS 2.0: Not enough room for OSU Server URI length"); 652 return; 653 } 654 uri_len = *pos++; 655 if (uri_len > end - pos) { 656 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server " 657 "URI"); 658 return; 659 } 660 os_memcpy(prov->server_uri, pos, uri_len); 661 pos += uri_len; 662 663 /* OSU Method list */ 664 if (pos + 1 > end) { 665 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 666 "list length"); 667 return; 668 } 669 osu_method_len = pos[0]; 670 if (osu_method_len > end - pos - 1) { 671 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 672 "list"); 673 return; 674 } 675 pos2 = pos + 1; 676 pos += 1 + osu_method_len; 677 while (pos2 < pos) { 678 if (*pos2 < 32) 679 prov->osu_methods |= BIT(*pos2); 680 pos2++; 681 } 682 683 /* Icons Available Length */ 684 if (pos + 2 > end) { 685 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 686 "Available Length"); 687 return; 688 } 689 len2 = WPA_GET_LE16(pos); 690 pos += 2; 691 if (len2 > end - pos) { 692 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 693 "Available"); 694 return; 695 } 696 pos2 = pos; 697 pos += len2; 698 699 /* Icons Available */ 700 while (pos2 < pos) { 701 struct osu_icon *icon = &prov->icon[prov->icon_count]; 702 u8 flen; 703 704 if (pos2 + 2 + 2 + 3 + 1 + 1 > pos) { 705 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata"); 706 break; 707 } 708 709 icon->width = WPA_GET_LE16(pos2); 710 pos2 += 2; 711 icon->height = WPA_GET_LE16(pos2); 712 pos2 += 2; 713 os_memcpy(icon->lang, pos2, 3); 714 pos2 += 3; 715 716 flen = pos2[0]; 717 if (flen > pos - pos2 - 1) { 718 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type"); 719 break; 720 } 721 os_memcpy(icon->icon_type, pos2 + 1, flen); 722 pos2 += 1 + flen; 723 724 if (pos2 + 1 > pos) { 725 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 726 "Filename length"); 727 break; 728 } 729 flen = pos2[0]; 730 if (flen > pos - pos2 - 1) { 731 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 732 "Filename"); 733 break; 734 } 735 os_memcpy(icon->filename, pos2 + 1, flen); 736 pos2 += 1 + flen; 737 738 prov->icon_count++; 739 } 740 741 /* OSU_NAI */ 742 if (pos + 1 > end) { 743 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 744 return; 745 } 746 osu_nai_len = pos[0]; 747 if (osu_nai_len > end - pos - 1) { 748 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 749 return; 750 } 751 os_memcpy(prov->osu_nai, pos + 1, osu_nai_len); 752 pos += 1 + osu_nai_len; 753 754 /* OSU Service Description Length */ 755 if (pos + 2 > end) { 756 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 757 "Service Description Length"); 758 return; 759 } 760 len2 = WPA_GET_LE16(pos); 761 pos += 2; 762 if (len2 > end - pos) { 763 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 764 "Service Description Duples"); 765 return; 766 } 767 pos2 = pos; 768 pos += len2; 769 770 /* OSU Service Description Duples */ 771 while (pos2 + 4 <= pos && prov->serv_desc_count < OSU_MAX_ITEMS) { 772 struct osu_lang_string *f; 773 u8 descr_len; 774 775 descr_len = pos2[0]; 776 if (descr_len > pos - pos2 - 1 || descr_len < 3) { 777 wpa_printf(MSG_DEBUG, "Invalid OSU Service " 778 "Description"); 779 break; 780 } 781 f = &prov->serv_desc[prov->serv_desc_count++]; 782 os_memcpy(f->lang, pos2 + 1, 3); 783 os_memcpy(f->text, pos2 + 1 + 3, descr_len - 3); 784 pos2 += 1 + descr_len; 785 } 786 787 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR, 788 MAC2STR(bss->bssid)); 789 wpa_s->osu_prov_count++; 790 } 791 792 793 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s) 794 { 795 struct wpa_bss *bss; 796 struct wpabuf *prov_anqp; 797 const u8 *pos, *end; 798 u16 len; 799 const u8 *osu_ssid; 800 u8 osu_ssid_len; 801 u8 num_providers; 802 803 hs20_free_osu_prov(wpa_s); 804 805 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 806 if (bss->anqp == NULL) 807 continue; 808 prov_anqp = bss->anqp->hs20_osu_providers_list; 809 if (prov_anqp == NULL) 810 continue; 811 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from " 812 MACSTR, MAC2STR(bss->bssid)); 813 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list", 814 prov_anqp); 815 pos = wpabuf_head(prov_anqp); 816 end = pos + wpabuf_len(prov_anqp); 817 818 /* OSU SSID */ 819 if (pos + 1 > end) 820 continue; 821 if (pos + 1 + pos[0] > end) { 822 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 823 "OSU SSID"); 824 continue; 825 } 826 osu_ssid_len = *pos++; 827 if (osu_ssid_len > SSID_MAX_LEN) { 828 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID " 829 "Length %u", osu_ssid_len); 830 continue; 831 } 832 osu_ssid = pos; 833 pos += osu_ssid_len; 834 835 if (pos + 1 > end) { 836 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 837 "Number of OSU Providers"); 838 continue; 839 } 840 num_providers = *pos++; 841 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u", 842 num_providers); 843 844 /* OSU Providers */ 845 while (pos + 2 < end && num_providers > 0) { 846 num_providers--; 847 len = WPA_GET_LE16(pos); 848 pos += 2; 849 if (len > (unsigned int) (end - pos)) 850 break; 851 hs20_osu_add_prov(wpa_s, bss, osu_ssid, 852 osu_ssid_len, pos, len); 853 pos += len; 854 } 855 856 if (pos != end) { 857 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of " 858 "extra data after OSU Providers", 859 (int) (end - pos)); 860 } 861 } 862 863 wpa_s->fetch_osu_icon_in_progress = 1; 864 hs20_next_osu_icon(wpa_s); 865 } 866 867 868 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s, 869 struct wpa_scan_results *scan_res) 870 { 871 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed"); 872 if (!wpa_s->fetch_osu_waiting_scan) { 873 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled"); 874 return; 875 } 876 wpa_s->network_select = 0; 877 wpa_s->fetch_all_anqp = 1; 878 wpa_s->fetch_osu_info = 1; 879 wpa_s->fetch_osu_icon_in_progress = 0; 880 881 interworking_start_fetch_anqp(wpa_s); 882 } 883 884 885 int hs20_fetch_osu(struct wpa_supplicant *wpa_s) 886 { 887 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 888 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 889 "interface disabled"); 890 return -1; 891 } 892 893 if (wpa_s->scanning) { 894 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 895 "scanning"); 896 return -1; 897 } 898 899 if (wpa_s->conf->osu_dir == NULL) { 900 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 901 "osu_dir not configured"); 902 return -1; 903 } 904 905 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) { 906 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 907 "fetch in progress (%d, %d)", 908 wpa_s->fetch_anqp_in_progress, 909 wpa_s->network_select); 910 return -1; 911 } 912 913 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch"); 914 wpa_s->num_osu_scans = 0; 915 wpa_s->num_prov_found = 0; 916 hs20_start_osu_scan(wpa_s); 917 918 return 0; 919 } 920 921 922 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s) 923 { 924 wpa_s->fetch_osu_waiting_scan = 1; 925 wpa_s->num_osu_scans++; 926 wpa_s->scan_req = MANUAL_SCAN_REQ; 927 wpa_s->scan_res_handler = hs20_osu_scan_res_handler; 928 wpa_supplicant_req_scan(wpa_s, 0, 0); 929 } 930 931 932 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s) 933 { 934 wpa_printf(MSG_DEBUG, "Cancel OSU fetch"); 935 interworking_stop_fetch_anqp(wpa_s); 936 wpa_s->fetch_osu_waiting_scan = 0; 937 wpa_s->network_select = 0; 938 wpa_s->fetch_osu_info = 0; 939 wpa_s->fetch_osu_icon_in_progress = 0; 940 } 941 942 943 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s) 944 { 945 hs20_osu_icon_fetch_result(wpa_s, -1); 946 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 947 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL); 948 } 949 950 951 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s, 952 const char *url, u8 osu_method) 953 { 954 if (url) 955 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s", 956 osu_method, url); 957 else 958 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION); 959 } 960 961 962 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code, 963 u16 reauth_delay, const char *url) 964 { 965 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) { 966 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled"); 967 return; 968 } 969 970 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s", 971 code, reauth_delay, url); 972 973 if (code == HS20_DEAUTH_REASON_CODE_BSS) { 974 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist"); 975 wpa_blacklist_add(wpa_s, wpa_s->bssid); 976 /* TODO: For now, disable full ESS since some drivers may not 977 * support disabling per BSS. */ 978 if (wpa_s->current_ssid) { 979 struct os_reltime now; 980 os_get_reltime(&now); 981 if (now.sec + reauth_delay <= 982 wpa_s->current_ssid->disabled_until.sec) 983 return; 984 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)", 985 reauth_delay); 986 wpa_s->current_ssid->disabled_until.sec = 987 now.sec + reauth_delay; 988 } 989 } 990 991 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) { 992 struct os_reltime now; 993 os_get_reltime(&now); 994 if (now.sec + reauth_delay <= 995 wpa_s->current_ssid->disabled_until.sec) 996 return; 997 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds", 998 reauth_delay); 999 wpa_s->current_ssid->disabled_until.sec = 1000 now.sec + reauth_delay; 1001 } 1002 } 1003 1004 1005 void hs20_deinit(struct wpa_supplicant *wpa_s) 1006 { 1007 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1008 hs20_free_osu_prov(wpa_s); 1009 } 1010