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 #include "base64.h" 29 30 31 #define OSU_MAX_ITEMS 10 32 33 struct osu_lang_string { 34 char lang[4]; 35 char text[253]; 36 }; 37 38 struct osu_icon { 39 u16 width; 40 u16 height; 41 char lang[4]; 42 char icon_type[256]; 43 char filename[256]; 44 unsigned int id; 45 unsigned int failed:1; 46 }; 47 48 struct osu_provider { 49 u8 bssid[ETH_ALEN]; 50 u8 osu_ssid[SSID_MAX_LEN]; 51 u8 osu_ssid_len; 52 char server_uri[256]; 53 u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */ 54 char osu_nai[256]; 55 struct osu_lang_string friendly_name[OSU_MAX_ITEMS]; 56 size_t friendly_name_count; 57 struct osu_lang_string serv_desc[OSU_MAX_ITEMS]; 58 size_t serv_desc_count; 59 struct osu_icon icon[OSU_MAX_ITEMS]; 60 size_t icon_count; 61 }; 62 63 64 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id) 65 { 66 u8 conf; 67 68 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); 69 wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5); 70 wpabuf_put_be24(buf, OUI_WFA); 71 wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE); 72 conf = HS20_VERSION; 73 if (pps_mo_id >= 0) 74 conf |= HS20_PPS_MO_ID_PRESENT; 75 wpabuf_put_u8(buf, conf); 76 if (pps_mo_id >= 0) 77 wpabuf_put_le16(buf, pps_mo_id); 78 } 79 80 81 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 82 struct wpa_bss *bss) 83 { 84 if (!wpa_s->conf->hs20 || !ssid) 85 return 0; 86 87 if (ssid->parent_cred) 88 return 1; 89 90 if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) 91 return 0; 92 93 /* 94 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that 95 * than cause Hotspot 2.0 connections without indication element getting 96 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element. 97 */ 98 99 if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X)) 100 return 0; 101 if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP)) 102 return 0; 103 if (ssid->proto != WPA_PROTO_RSN) 104 return 0; 105 106 return 1; 107 } 108 109 110 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 111 { 112 struct wpa_cred *cred; 113 114 if (ssid == NULL) 115 return 0; 116 117 if (ssid->update_identifier) 118 return ssid->update_identifier; 119 120 if (ssid->parent_cred == NULL) 121 return 0; 122 123 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 124 if (ssid->parent_cred == cred) 125 return cred->update_identifier; 126 } 127 128 return 0; 129 } 130 131 132 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len, 133 struct wpabuf *buf) 134 { 135 u8 *len_pos; 136 137 if (buf == NULL) 138 return; 139 140 len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC); 141 wpabuf_put_be24(buf, OUI_WFA); 142 wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE); 143 if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) { 144 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY); 145 wpabuf_put_u8(buf, 0); /* Reserved */ 146 if (payload) 147 wpabuf_put_data(buf, payload, payload_len); 148 } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) { 149 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST); 150 wpabuf_put_u8(buf, 0); /* Reserved */ 151 if (payload) 152 wpabuf_put_data(buf, payload, payload_len); 153 } else { 154 u8 i; 155 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST); 156 wpabuf_put_u8(buf, 0); /* Reserved */ 157 for (i = 0; i < 32; i++) { 158 if (stypes & BIT(i)) 159 wpabuf_put_u8(buf, i); 160 } 161 } 162 gas_anqp_set_element_len(buf, len_pos); 163 164 gas_anqp_set_len(buf); 165 } 166 167 168 struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload, 169 size_t payload_len) 170 { 171 struct wpabuf *buf; 172 173 buf = gas_anqp_build_initial_req(0, 100 + payload_len); 174 if (buf == NULL) 175 return NULL; 176 177 hs20_put_anqp_req(stypes, payload, payload_len, buf); 178 179 return buf; 180 } 181 182 183 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes, 184 const u8 *payload, size_t payload_len, int inmem) 185 { 186 struct wpabuf *buf; 187 int ret = 0; 188 int freq; 189 struct wpa_bss *bss; 190 int res; 191 struct icon_entry *icon_entry; 192 193 bss = wpa_bss_get_bssid(wpa_s, dst); 194 if (!bss) { 195 wpa_printf(MSG_WARNING, 196 "ANQP: Cannot send query to unknown BSS " 197 MACSTR, MAC2STR(dst)); 198 return -1; 199 } 200 201 wpa_bss_anqp_unshare_alloc(bss); 202 freq = bss->freq; 203 204 wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for " 205 "subtypes 0x%x", MAC2STR(dst), stypes); 206 207 buf = hs20_build_anqp_req(stypes, payload, payload_len); 208 if (buf == NULL) 209 return -1; 210 211 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s); 212 if (res < 0) { 213 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); 214 wpabuf_free(buf); 215 return -1; 216 } else 217 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " 218 "%u", res); 219 220 if (inmem) { 221 icon_entry = os_zalloc(sizeof(struct icon_entry)); 222 if (!icon_entry) 223 return -1; 224 os_memcpy(icon_entry->bssid, dst, ETH_ALEN); 225 icon_entry->file_name = os_malloc(payload_len + 1); 226 if (!icon_entry->file_name) { 227 os_free(icon_entry); 228 return -1; 229 } 230 os_memcpy(icon_entry->file_name, payload, payload_len); 231 icon_entry->file_name[payload_len] = '\0'; 232 icon_entry->dialog_token = res; 233 234 dl_list_add(&wpa_s->icon_head, &icon_entry->list); 235 } 236 237 return ret; 238 } 239 240 241 static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s, 242 const u8 *bssid, 243 const char *file_name) 244 { 245 struct icon_entry *icon; 246 247 dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) { 248 if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 && 249 os_strcmp(icon->file_name, file_name) == 0 && icon->image) 250 return icon; 251 } 252 253 return NULL; 254 } 255 256 257 int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, 258 const char *file_name, size_t offset, size_t size, 259 char *reply, size_t buf_len) 260 { 261 struct icon_entry *icon; 262 size_t out_size; 263 unsigned char *b64; 264 size_t b64_size; 265 int reply_size; 266 267 wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)", 268 MAC2STR(bssid), file_name, (unsigned int) offset, 269 (unsigned int) size, (unsigned int) buf_len); 270 271 icon = hs20_find_icon(wpa_s, bssid, file_name); 272 if (!icon || !icon->image || offset >= icon->image_len) 273 return -1; 274 if (size > icon->image_len - offset) 275 size = icon->image_len - offset; 276 out_size = buf_len - 3 /* max base64 padding */; 277 if (size * 4 > out_size * 3) 278 size = out_size * 3 / 4; 279 if (size == 0) 280 return -1; 281 282 b64 = base64_encode(&icon->image[offset], size, &b64_size); 283 if (buf_len >= b64_size) { 284 os_memcpy(reply, b64, b64_size); 285 reply_size = b64_size; 286 } else { 287 reply_size = -1; 288 } 289 os_free(b64); 290 return reply_size; 291 } 292 293 294 static void hs20_free_icon_entry(struct icon_entry *icon) 295 { 296 wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR 297 " dialog_token=%u file_name=%s image_len=%u", 298 MAC2STR(icon->bssid), icon->dialog_token, 299 icon->file_name ? icon->file_name : "N/A", 300 (unsigned int) icon->image_len); 301 os_free(icon->file_name); 302 os_free(icon->image); 303 os_free(icon); 304 } 305 306 307 int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, 308 const char *file_name) 309 { 310 struct icon_entry *icon, *tmp; 311 int count = 0; 312 313 if (!bssid) 314 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons"); 315 else if (!file_name) 316 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for " 317 MACSTR, MAC2STR(bssid)); 318 else 319 wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for " 320 MACSTR " file name %s", MAC2STR(bssid), file_name); 321 322 dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry, 323 list) { 324 if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) && 325 (!file_name || 326 os_strcmp(icon->file_name, file_name) == 0)) { 327 dl_list_del(&icon->list); 328 hs20_free_icon_entry(icon); 329 count++; 330 } 331 } 332 return count == 0 ? -1 : 0; 333 } 334 335 336 static void hs20_set_osu_access_permission(const char *osu_dir, 337 const char *fname) 338 { 339 struct stat statbuf; 340 341 /* Get OSU directory information */ 342 if (stat(osu_dir, &statbuf) < 0) { 343 wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s", 344 osu_dir); 345 return; 346 } 347 348 if (chmod(fname, statbuf.st_mode) < 0) { 349 wpa_printf(MSG_WARNING, 350 "Cannot change the permissions for %s", fname); 351 return; 352 } 353 354 if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) { 355 wpa_printf(MSG_WARNING, "Cannot change the ownership for %s", 356 fname); 357 } 358 } 359 360 361 static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s, 362 struct icon_entry *new_icon) 363 { 364 struct icon_entry *icon, *tmp; 365 366 dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry, 367 list) { 368 if (icon == new_icon) 369 continue; 370 if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 && 371 os_strcmp(icon->file_name, new_icon->file_name) == 0) { 372 dl_list_del(&icon->list); 373 hs20_free_icon_entry(icon); 374 } 375 } 376 } 377 378 379 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s, 380 const u8 *sa, const u8 *pos, 381 size_t slen, u8 dialog_token) 382 { 383 char fname[256]; 384 int png; 385 FILE *f; 386 u16 data_len; 387 struct icon_entry *icon; 388 389 dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) { 390 if (icon->dialog_token == dialog_token && !icon->image && 391 os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) { 392 icon->image = os_malloc(slen); 393 if (!icon->image) 394 return -1; 395 os_memcpy(icon->image, pos, slen); 396 icon->image_len = slen; 397 hs20_remove_duplicate_icons(wpa_s, icon); 398 wpa_msg(wpa_s, MSG_INFO, 399 "RX-HS20-ICON " MACSTR " %s %u", 400 MAC2STR(sa), icon->file_name, 401 (unsigned int) icon->image_len); 402 return 0; 403 } 404 } 405 406 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File", 407 MAC2STR(sa)); 408 409 if (slen < 4) { 410 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 411 "value from " MACSTR, MAC2STR(sa)); 412 return -1; 413 } 414 415 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos); 416 if (*pos != 0) 417 return -1; 418 pos++; 419 slen--; 420 421 if ((size_t) 1 + pos[0] > slen) { 422 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 423 "value from " MACSTR, MAC2STR(sa)); 424 return -1; 425 } 426 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]); 427 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0; 428 slen -= 1 + pos[0]; 429 pos += 1 + pos[0]; 430 431 if (slen < 2) { 432 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 433 "value from " MACSTR, MAC2STR(sa)); 434 return -1; 435 } 436 data_len = WPA_GET_LE16(pos); 437 pos += 2; 438 slen -= 2; 439 440 if (data_len > slen) { 441 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 442 "value from " MACSTR, MAC2STR(sa)); 443 return -1; 444 } 445 446 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len); 447 if (wpa_s->conf->osu_dir == NULL) 448 return -1; 449 450 wpa_s->osu_icon_id++; 451 if (wpa_s->osu_icon_id == 0) 452 wpa_s->osu_icon_id++; 453 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s", 454 wpa_s->conf->osu_dir, wpa_s->osu_icon_id, 455 png ? "png" : "icon"); 456 f = fopen(fname, "wb"); 457 if (f == NULL) 458 return -1; 459 460 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 461 462 if (fwrite(pos, slen, 1, f) != 1) { 463 fclose(f); 464 unlink(fname); 465 return -1; 466 } 467 fclose(f); 468 469 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname); 470 return 0; 471 } 472 473 474 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx) 475 { 476 struct wpa_supplicant *wpa_s = eloop_ctx; 477 if (wpa_s->fetch_osu_icon_in_progress) 478 hs20_next_osu_icon(wpa_s); 479 } 480 481 482 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res) 483 { 484 size_t i, j; 485 struct os_reltime now, tmp; 486 int dur; 487 488 os_get_reltime(&now); 489 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp); 490 dur = tmp.sec * 1000 + tmp.usec / 1000; 491 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d", 492 dur, res); 493 494 for (i = 0; i < wpa_s->osu_prov_count; i++) { 495 struct osu_provider *osu = &wpa_s->osu_prov[i]; 496 for (j = 0; j < osu->icon_count; j++) { 497 struct osu_icon *icon = &osu->icon[j]; 498 if (icon->id || icon->failed) 499 continue; 500 if (res < 0) 501 icon->failed = 1; 502 else 503 icon->id = wpa_s->osu_icon_id; 504 return; 505 } 506 } 507 } 508 509 510 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s, 511 struct wpa_bss *bss, const u8 *sa, 512 const u8 *data, size_t slen, u8 dialog_token) 513 { 514 const u8 *pos = data; 515 u8 subtype; 516 struct wpa_bss_anqp *anqp = NULL; 517 int ret; 518 519 if (slen < 2) 520 return; 521 522 if (bss) 523 anqp = bss->anqp; 524 525 subtype = *pos++; 526 slen--; 527 528 pos++; /* Reserved */ 529 slen--; 530 531 switch (subtype) { 532 case HS20_STYPE_CAPABILITY_LIST: 533 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 534 " HS Capability List", MAC2STR(sa)); 535 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); 536 if (anqp) { 537 wpabuf_free(anqp->hs20_capability_list); 538 anqp->hs20_capability_list = 539 wpabuf_alloc_copy(pos, slen); 540 } 541 break; 542 case HS20_STYPE_OPERATOR_FRIENDLY_NAME: 543 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 544 " Operator Friendly Name", MAC2STR(sa)); 545 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); 546 if (anqp) { 547 wpabuf_free(anqp->hs20_operator_friendly_name); 548 anqp->hs20_operator_friendly_name = 549 wpabuf_alloc_copy(pos, slen); 550 } 551 break; 552 case HS20_STYPE_WAN_METRICS: 553 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen); 554 if (slen < 13) { 555 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN " 556 "Metrics value from " MACSTR, MAC2STR(sa)); 557 break; 558 } 559 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 560 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa), 561 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5), 562 pos[9], pos[10], WPA_GET_LE16(pos + 11)); 563 if (anqp) { 564 wpabuf_free(anqp->hs20_wan_metrics); 565 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); 566 } 567 break; 568 case HS20_STYPE_CONNECTION_CAPABILITY: 569 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 570 " Connection Capability", MAC2STR(sa)); 571 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); 572 if (anqp) { 573 wpabuf_free(anqp->hs20_connection_capability); 574 anqp->hs20_connection_capability = 575 wpabuf_alloc_copy(pos, slen); 576 } 577 break; 578 case HS20_STYPE_OPERATING_CLASS: 579 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 580 " Operating Class", MAC2STR(sa)); 581 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); 582 if (anqp) { 583 wpabuf_free(anqp->hs20_operating_class); 584 anqp->hs20_operating_class = 585 wpabuf_alloc_copy(pos, slen); 586 } 587 break; 588 case HS20_STYPE_OSU_PROVIDERS_LIST: 589 wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR 590 " OSU Providers list", MAC2STR(sa)); 591 wpa_s->num_prov_found++; 592 if (anqp) { 593 wpabuf_free(anqp->hs20_osu_providers_list); 594 anqp->hs20_osu_providers_list = 595 wpabuf_alloc_copy(pos, slen); 596 } 597 break; 598 case HS20_STYPE_ICON_BINARY_FILE: 599 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen, 600 dialog_token); 601 if (wpa_s->fetch_osu_icon_in_progress) { 602 hs20_osu_icon_fetch_result(wpa_s, ret); 603 eloop_cancel_timeout(hs20_continue_icon_fetch, 604 wpa_s, NULL); 605 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, 606 wpa_s, NULL); 607 } 608 break; 609 default: 610 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); 611 break; 612 } 613 } 614 615 616 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s) 617 { 618 if (!wpa_s->fetch_osu_icon_in_progress) 619 return; 620 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL)) 621 return; 622 /* 623 * We are going through icon fetch, but no icon response was received. 624 * Assume this means the current AP could not provide an answer to avoid 625 * getting stuck in fetch iteration. 626 */ 627 hs20_icon_fetch_failed(wpa_s); 628 } 629 630 631 static void hs20_free_osu_prov_entry(struct osu_provider *prov) 632 { 633 } 634 635 636 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s) 637 { 638 size_t i; 639 for (i = 0; i < wpa_s->osu_prov_count; i++) 640 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]); 641 os_free(wpa_s->osu_prov); 642 wpa_s->osu_prov = NULL; 643 wpa_s->osu_prov_count = 0; 644 } 645 646 647 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s) 648 { 649 char fname[256]; 650 FILE *f; 651 size_t i, j; 652 653 wpa_s->fetch_osu_info = 0; 654 wpa_s->fetch_osu_icon_in_progress = 0; 655 656 if (wpa_s->conf->osu_dir == NULL) { 657 hs20_free_osu_prov(wpa_s); 658 wpa_s->fetch_anqp_in_progress = 0; 659 return; 660 } 661 662 snprintf(fname, sizeof(fname), "%s/osu-providers.txt", 663 wpa_s->conf->osu_dir); 664 f = fopen(fname, "w"); 665 if (f == NULL) { 666 hs20_free_osu_prov(wpa_s); 667 wpa_s->fetch_anqp_in_progress = 0; 668 return; 669 } 670 671 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 672 673 for (i = 0; i < wpa_s->osu_prov_count; i++) { 674 struct osu_provider *osu = &wpa_s->osu_prov[i]; 675 if (i > 0) 676 fprintf(f, "\n"); 677 fprintf(f, "OSU-PROVIDER " MACSTR "\n" 678 "uri=%s\n" 679 "methods=%08x\n", 680 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods); 681 if (osu->osu_ssid_len) { 682 fprintf(f, "osu_ssid=%s\n", 683 wpa_ssid_txt(osu->osu_ssid, 684 osu->osu_ssid_len)); 685 } 686 if (osu->osu_nai[0]) 687 fprintf(f, "osu_nai=%s\n", osu->osu_nai); 688 for (j = 0; j < osu->friendly_name_count; j++) { 689 fprintf(f, "friendly_name=%s:%s\n", 690 osu->friendly_name[j].lang, 691 osu->friendly_name[j].text); 692 } 693 for (j = 0; j < osu->serv_desc_count; j++) { 694 fprintf(f, "desc=%s:%s\n", 695 osu->serv_desc[j].lang, 696 osu->serv_desc[j].text); 697 } 698 for (j = 0; j < osu->icon_count; j++) { 699 struct osu_icon *icon = &osu->icon[j]; 700 if (icon->failed) 701 continue; /* could not fetch icon */ 702 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n", 703 icon->id, icon->width, icon->height, icon->lang, 704 icon->icon_type, icon->filename); 705 } 706 } 707 fclose(f); 708 hs20_free_osu_prov(wpa_s); 709 710 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed"); 711 wpa_s->fetch_anqp_in_progress = 0; 712 } 713 714 715 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s) 716 { 717 size_t i, j; 718 719 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon"); 720 721 for (i = 0; i < wpa_s->osu_prov_count; i++) { 722 struct osu_provider *osu = &wpa_s->osu_prov[i]; 723 for (j = 0; j < osu->icon_count; j++) { 724 struct osu_icon *icon = &osu->icon[j]; 725 if (icon->id || icon->failed) 726 continue; 727 728 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' " 729 "from " MACSTR, icon->filename, 730 MAC2STR(osu->bssid)); 731 os_get_reltime(&wpa_s->osu_icon_fetch_start); 732 if (hs20_anqp_send_req(wpa_s, osu->bssid, 733 BIT(HS20_STYPE_ICON_REQUEST), 734 (u8 *) icon->filename, 735 os_strlen(icon->filename), 736 0) < 0) { 737 icon->failed = 1; 738 continue; 739 } 740 return; 741 } 742 } 743 744 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch"); 745 hs20_osu_fetch_done(wpa_s); 746 } 747 748 749 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 750 const u8 *osu_ssid, u8 osu_ssid_len, 751 const u8 *pos, size_t len) 752 { 753 struct osu_provider *prov; 754 const u8 *end = pos + len; 755 u16 len2; 756 const u8 *pos2; 757 u8 uri_len, osu_method_len, osu_nai_len; 758 759 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len); 760 prov = os_realloc_array(wpa_s->osu_prov, 761 wpa_s->osu_prov_count + 1, 762 sizeof(*prov)); 763 if (prov == NULL) 764 return; 765 wpa_s->osu_prov = prov; 766 prov = &prov[wpa_s->osu_prov_count]; 767 os_memset(prov, 0, sizeof(*prov)); 768 769 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN); 770 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len); 771 prov->osu_ssid_len = osu_ssid_len; 772 773 /* OSU Friendly Name Length */ 774 if (end - pos < 2) { 775 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 776 "Friendly Name Length"); 777 return; 778 } 779 len2 = WPA_GET_LE16(pos); 780 pos += 2; 781 if (len2 > end - pos) { 782 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 783 "Friendly Name Duples"); 784 return; 785 } 786 pos2 = pos; 787 pos += len2; 788 789 /* OSU Friendly Name Duples */ 790 while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) { 791 struct osu_lang_string *f; 792 if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) { 793 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name"); 794 break; 795 } 796 f = &prov->friendly_name[prov->friendly_name_count++]; 797 os_memcpy(f->lang, pos2 + 1, 3); 798 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3); 799 pos2 += 1 + pos2[0]; 800 } 801 802 /* OSU Server URI */ 803 if (end - pos < 1) { 804 wpa_printf(MSG_DEBUG, 805 "HS 2.0: Not enough room for OSU Server URI length"); 806 return; 807 } 808 uri_len = *pos++; 809 if (uri_len > end - pos) { 810 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server " 811 "URI"); 812 return; 813 } 814 os_memcpy(prov->server_uri, pos, uri_len); 815 pos += uri_len; 816 817 /* OSU Method list */ 818 if (end - pos < 1) { 819 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 820 "list length"); 821 return; 822 } 823 osu_method_len = pos[0]; 824 if (osu_method_len > end - pos - 1) { 825 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 826 "list"); 827 return; 828 } 829 pos2 = pos + 1; 830 pos += 1 + osu_method_len; 831 while (pos2 < pos) { 832 if (*pos2 < 32) 833 prov->osu_methods |= BIT(*pos2); 834 pos2++; 835 } 836 837 /* Icons Available Length */ 838 if (end - pos < 2) { 839 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 840 "Available Length"); 841 return; 842 } 843 len2 = WPA_GET_LE16(pos); 844 pos += 2; 845 if (len2 > end - pos) { 846 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 847 "Available"); 848 return; 849 } 850 pos2 = pos; 851 pos += len2; 852 853 /* Icons Available */ 854 while (pos2 < pos) { 855 struct osu_icon *icon = &prov->icon[prov->icon_count]; 856 u8 flen; 857 858 if (2 + 2 + 3 + 1 + 1 > pos - pos2) { 859 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata"); 860 break; 861 } 862 863 icon->width = WPA_GET_LE16(pos2); 864 pos2 += 2; 865 icon->height = WPA_GET_LE16(pos2); 866 pos2 += 2; 867 os_memcpy(icon->lang, pos2, 3); 868 pos2 += 3; 869 870 flen = *pos2++; 871 if (flen > pos - pos2) { 872 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type"); 873 break; 874 } 875 os_memcpy(icon->icon_type, pos2, flen); 876 pos2 += flen; 877 878 if (pos - pos2 < 1) { 879 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 880 "Filename length"); 881 break; 882 } 883 flen = *pos2++; 884 if (flen > pos - pos2) { 885 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 886 "Filename"); 887 break; 888 } 889 os_memcpy(icon->filename, pos2, flen); 890 pos2 += flen; 891 892 prov->icon_count++; 893 } 894 895 /* OSU_NAI */ 896 if (end - pos < 1) { 897 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 898 return; 899 } 900 osu_nai_len = *pos++; 901 if (osu_nai_len > end - pos) { 902 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 903 return; 904 } 905 os_memcpy(prov->osu_nai, pos, osu_nai_len); 906 pos += osu_nai_len; 907 908 /* OSU Service Description Length */ 909 if (end - pos < 2) { 910 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 911 "Service Description Length"); 912 return; 913 } 914 len2 = WPA_GET_LE16(pos); 915 pos += 2; 916 if (len2 > end - pos) { 917 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 918 "Service Description Duples"); 919 return; 920 } 921 pos2 = pos; 922 pos += len2; 923 924 /* OSU Service Description Duples */ 925 while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) { 926 struct osu_lang_string *f; 927 u8 descr_len; 928 929 descr_len = *pos2++; 930 if (descr_len > pos - pos2 || descr_len < 3) { 931 wpa_printf(MSG_DEBUG, "Invalid OSU Service " 932 "Description"); 933 break; 934 } 935 f = &prov->serv_desc[prov->serv_desc_count++]; 936 os_memcpy(f->lang, pos2, 3); 937 os_memcpy(f->text, pos2 + 3, descr_len - 3); 938 pos2 += descr_len; 939 } 940 941 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR, 942 MAC2STR(bss->bssid)); 943 wpa_s->osu_prov_count++; 944 } 945 946 947 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s) 948 { 949 struct wpa_bss *bss; 950 struct wpabuf *prov_anqp; 951 const u8 *pos, *end; 952 u16 len; 953 const u8 *osu_ssid; 954 u8 osu_ssid_len; 955 u8 num_providers; 956 957 hs20_free_osu_prov(wpa_s); 958 959 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 960 if (bss->anqp == NULL) 961 continue; 962 prov_anqp = bss->anqp->hs20_osu_providers_list; 963 if (prov_anqp == NULL) 964 continue; 965 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from " 966 MACSTR, MAC2STR(bss->bssid)); 967 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list", 968 prov_anqp); 969 pos = wpabuf_head(prov_anqp); 970 end = pos + wpabuf_len(prov_anqp); 971 972 /* OSU SSID */ 973 if (end - pos < 1) 974 continue; 975 if (1 + pos[0] > end - pos) { 976 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 977 "OSU SSID"); 978 continue; 979 } 980 osu_ssid_len = *pos++; 981 if (osu_ssid_len > SSID_MAX_LEN) { 982 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID " 983 "Length %u", osu_ssid_len); 984 continue; 985 } 986 osu_ssid = pos; 987 pos += osu_ssid_len; 988 989 if (end - pos < 1) { 990 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 991 "Number of OSU Providers"); 992 continue; 993 } 994 num_providers = *pos++; 995 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u", 996 num_providers); 997 998 /* OSU Providers */ 999 while (end - pos > 2 && num_providers > 0) { 1000 num_providers--; 1001 len = WPA_GET_LE16(pos); 1002 pos += 2; 1003 if (len > (unsigned int) (end - pos)) 1004 break; 1005 hs20_osu_add_prov(wpa_s, bss, osu_ssid, 1006 osu_ssid_len, pos, len); 1007 pos += len; 1008 } 1009 1010 if (pos != end) { 1011 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of " 1012 "extra data after OSU Providers", 1013 (int) (end - pos)); 1014 } 1015 } 1016 1017 wpa_s->fetch_osu_icon_in_progress = 1; 1018 hs20_next_osu_icon(wpa_s); 1019 } 1020 1021 1022 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s, 1023 struct wpa_scan_results *scan_res) 1024 { 1025 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed"); 1026 if (!wpa_s->fetch_osu_waiting_scan) { 1027 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled"); 1028 return; 1029 } 1030 wpa_s->network_select = 0; 1031 wpa_s->fetch_all_anqp = 1; 1032 wpa_s->fetch_osu_info = 1; 1033 wpa_s->fetch_osu_icon_in_progress = 0; 1034 1035 interworking_start_fetch_anqp(wpa_s); 1036 } 1037 1038 1039 int hs20_fetch_osu(struct wpa_supplicant *wpa_s) 1040 { 1041 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 1042 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1043 "interface disabled"); 1044 return -1; 1045 } 1046 1047 if (wpa_s->scanning) { 1048 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1049 "scanning"); 1050 return -1; 1051 } 1052 1053 if (wpa_s->conf->osu_dir == NULL) { 1054 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1055 "osu_dir not configured"); 1056 return -1; 1057 } 1058 1059 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) { 1060 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1061 "fetch in progress (%d, %d)", 1062 wpa_s->fetch_anqp_in_progress, 1063 wpa_s->network_select); 1064 return -1; 1065 } 1066 1067 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch"); 1068 wpa_s->num_osu_scans = 0; 1069 wpa_s->num_prov_found = 0; 1070 hs20_start_osu_scan(wpa_s); 1071 1072 return 0; 1073 } 1074 1075 1076 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s) 1077 { 1078 wpa_s->fetch_osu_waiting_scan = 1; 1079 wpa_s->num_osu_scans++; 1080 wpa_s->scan_req = MANUAL_SCAN_REQ; 1081 wpa_s->scan_res_handler = hs20_osu_scan_res_handler; 1082 wpa_supplicant_req_scan(wpa_s, 0, 0); 1083 } 1084 1085 1086 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s) 1087 { 1088 wpa_printf(MSG_DEBUG, "Cancel OSU fetch"); 1089 interworking_stop_fetch_anqp(wpa_s); 1090 wpa_s->fetch_osu_waiting_scan = 0; 1091 wpa_s->network_select = 0; 1092 wpa_s->fetch_osu_info = 0; 1093 wpa_s->fetch_osu_icon_in_progress = 0; 1094 } 1095 1096 1097 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s) 1098 { 1099 hs20_osu_icon_fetch_result(wpa_s, -1); 1100 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1101 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL); 1102 } 1103 1104 1105 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s, 1106 const char *url, u8 osu_method) 1107 { 1108 if (url) 1109 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s", 1110 osu_method, url); 1111 else 1112 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION); 1113 } 1114 1115 1116 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code, 1117 u16 reauth_delay, const char *url) 1118 { 1119 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) { 1120 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled"); 1121 return; 1122 } 1123 1124 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s", 1125 code, reauth_delay, url); 1126 1127 if (code == HS20_DEAUTH_REASON_CODE_BSS) { 1128 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist"); 1129 wpa_blacklist_add(wpa_s, wpa_s->bssid); 1130 /* TODO: For now, disable full ESS since some drivers may not 1131 * support disabling per BSS. */ 1132 if (wpa_s->current_ssid) { 1133 struct os_reltime now; 1134 os_get_reltime(&now); 1135 if (now.sec + reauth_delay <= 1136 wpa_s->current_ssid->disabled_until.sec) 1137 return; 1138 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)", 1139 reauth_delay); 1140 wpa_s->current_ssid->disabled_until.sec = 1141 now.sec + reauth_delay; 1142 } 1143 } 1144 1145 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) { 1146 struct os_reltime now; 1147 os_get_reltime(&now); 1148 if (now.sec + reauth_delay <= 1149 wpa_s->current_ssid->disabled_until.sec) 1150 return; 1151 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds", 1152 reauth_delay); 1153 wpa_s->current_ssid->disabled_until.sec = 1154 now.sec + reauth_delay; 1155 } 1156 } 1157 1158 1159 void hs20_init(struct wpa_supplicant *wpa_s) 1160 { 1161 dl_list_init(&wpa_s->icon_head); 1162 } 1163 1164 1165 void hs20_deinit(struct wpa_supplicant *wpa_s) 1166 { 1167 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1168 hs20_free_osu_prov(wpa_s); 1169 if (wpa_s->icon_head.next) 1170 hs20_del_icon(wpa_s, NULL, NULL); 1171 } 1172
