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 "notify.h" 24 #include "bss.h" 25 #include "blacklist.h" 26 #include "gas_query.h" 27 #include "interworking.h" 28 #include "hs20_supplicant.h" 29 #include "base64.h" 30 31 32 #define OSU_MAX_ITEMS 10 33 34 struct osu_lang_string { 35 char lang[4]; 36 char text[253]; 37 }; 38 39 struct osu_icon { 40 u16 width; 41 u16 height; 42 char lang[4]; 43 char icon_type[256]; 44 char filename[256]; 45 unsigned int id; 46 unsigned int failed:1; 47 }; 48 49 struct osu_provider { 50 u8 bssid[ETH_ALEN]; 51 u8 osu_ssid[SSID_MAX_LEN]; 52 u8 osu_ssid_len; 53 char server_uri[256]; 54 u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */ 55 char osu_nai[256]; 56 struct osu_lang_string friendly_name[OSU_MAX_ITEMS]; 57 size_t friendly_name_count; 58 struct osu_lang_string serv_desc[OSU_MAX_ITEMS]; 59 size_t serv_desc_count; 60 struct osu_icon icon[OSU_MAX_ITEMS]; 61 size_t icon_count; 62 }; 63 64 65 void hs20_configure_frame_filters(struct wpa_supplicant *wpa_s) 66 { 67 struct wpa_bss *bss = wpa_s->current_bss; 68 u8 *bssid = wpa_s->bssid; 69 const u8 *ie; 70 const u8 *ext_capa; 71 u32 filter = 0; 72 73 if (!bss || !is_hs20_network(wpa_s, wpa_s->current_ssid, bss)) { 74 wpa_printf(MSG_DEBUG, 75 "Not configuring frame filtering - BSS " MACSTR 76 " is not a Hotspot 2.0 network", MAC2STR(bssid)); 77 return; 78 } 79 80 ie = wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE); 81 82 /* Check if DGAF disabled bit is zero (5th byte in the IE) */ 83 if (!ie || ie[1] < 5) 84 wpa_printf(MSG_DEBUG, 85 "Not configuring frame filtering - Can't extract DGAF bit"); 86 else if (!(ie[6] & HS20_DGAF_DISABLED)) 87 filter |= WPA_DATA_FRAME_FILTER_FLAG_GTK; 88 89 ext_capa = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB); 90 if (!ext_capa || ext_capa[1] < 2) { 91 wpa_printf(MSG_DEBUG, 92 "Not configuring frame filtering - Can't extract Proxy ARP bit"); 93 return; 94 } 95 96 /* Check if Proxy ARP is enabled (2nd byte in the IE) */ 97 if (ext_capa[3] & BIT(4)) 98 filter |= WPA_DATA_FRAME_FILTER_FLAG_ARP | 99 WPA_DATA_FRAME_FILTER_FLAG_NA; 100 101 wpa_drv_configure_frame_filters(wpa_s, filter); 102 } 103 104 105 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id) 106 { 107 u8 conf; 108 109 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); 110 wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5); 111 wpabuf_put_be24(buf, OUI_WFA); 112 wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE); 113 conf = HS20_VERSION; 114 if (pps_mo_id >= 0) 115 conf |= HS20_PPS_MO_ID_PRESENT; 116 wpabuf_put_u8(buf, conf); 117 if (pps_mo_id >= 0) 118 wpabuf_put_le16(buf, pps_mo_id); 119 } 120 121 122 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 123 struct wpa_bss *bss) 124 { 125 if (!wpa_s->conf->hs20 || !ssid) 126 return 0; 127 128 if (ssid->parent_cred) 129 return 1; 130 131 if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) 132 return 0; 133 134 /* 135 * This may catch some non-Hotspot 2.0 cases, but it is safer to do that 136 * than cause Hotspot 2.0 connections without indication element getting 137 * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element. 138 */ 139 140 if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X)) 141 return 0; 142 if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP)) 143 return 0; 144 if (ssid->proto != WPA_PROTO_RSN) 145 return 0; 146 147 return 1; 148 } 149 150 151 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 152 { 153 struct wpa_cred *cred; 154 155 if (ssid == NULL) 156 return 0; 157 158 if (ssid->update_identifier) 159 return ssid->update_identifier; 160 161 if (ssid->parent_cred == NULL) 162 return 0; 163 164 for (cred = wpa_s->conf->cred; cred; cred = cred->next) { 165 if (ssid->parent_cred == cred) 166 return cred->update_identifier; 167 } 168 169 return 0; 170 } 171 172 173 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len, 174 struct wpabuf *buf) 175 { 176 u8 *len_pos; 177 178 if (buf == NULL) 179 return; 180 181 len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC); 182 wpabuf_put_be24(buf, OUI_WFA); 183 wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE); 184 if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) { 185 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY); 186 wpabuf_put_u8(buf, 0); /* Reserved */ 187 if (payload) 188 wpabuf_put_data(buf, payload, payload_len); 189 } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) { 190 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST); 191 wpabuf_put_u8(buf, 0); /* Reserved */ 192 if (payload) 193 wpabuf_put_data(buf, payload, payload_len); 194 } else { 195 u8 i; 196 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST); 197 wpabuf_put_u8(buf, 0); /* Reserved */ 198 for (i = 0; i < 32; i++) { 199 if (stypes & BIT(i)) 200 wpabuf_put_u8(buf, i); 201 } 202 } 203 gas_anqp_set_element_len(buf, len_pos); 204 205 gas_anqp_set_len(buf); 206 } 207 208 209 static struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload, 210 size_t payload_len) 211 { 212 struct wpabuf *buf; 213 214 buf = gas_anqp_build_initial_req(0, 100 + payload_len); 215 if (buf == NULL) 216 return NULL; 217 218 hs20_put_anqp_req(stypes, payload, payload_len, buf); 219 220 return buf; 221 } 222 223 224 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes, 225 const u8 *payload, size_t payload_len, int inmem) 226 { 227 struct wpabuf *buf; 228 int ret = 0; 229 int freq; 230 struct wpa_bss *bss; 231 int res; 232 struct icon_entry *icon_entry; 233 234 bss = wpa_bss_get_bssid(wpa_s, dst); 235 if (!bss) { 236 wpa_printf(MSG_WARNING, 237 "ANQP: Cannot send query to unknown BSS " 238 MACSTR, MAC2STR(dst)); 239 return -1; 240 } 241 242 wpa_bss_anqp_unshare_alloc(bss); 243 freq = bss->freq; 244 245 wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for " 246 "subtypes 0x%x", MAC2STR(dst), stypes); 247 248 buf = hs20_build_anqp_req(stypes, payload, payload_len); 249 if (buf == NULL) 250 return -1; 251 252 res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s); 253 if (res < 0) { 254 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); 255 wpabuf_free(buf); 256 return -1; 257 } else 258 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " 259 "%u", res); 260 261 if (inmem) { 262 icon_entry = os_zalloc(sizeof(struct icon_entry)); 263 if (!icon_entry) 264 return -1; 265 os_memcpy(icon_entry->bssid, dst, ETH_ALEN); 266 icon_entry->file_name = os_malloc(payload_len + 1); 267 if (!icon_entry->file_name) { 268 os_free(icon_entry); 269 return -1; 270 } 271 os_memcpy(icon_entry->file_name, payload, payload_len); 272 icon_entry->file_name[payload_len] = '\0'; 273 icon_entry->dialog_token = res; 274 275 dl_list_add(&wpa_s->icon_head, &icon_entry->list); 276 } 277 278 return ret; 279 } 280 281 282 static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s, 283 const u8 *bssid, 284 const char *file_name) 285 { 286 struct icon_entry *icon; 287 288 dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) { 289 if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 && 290 os_strcmp(icon->file_name, file_name) == 0 && icon->image) 291 return icon; 292 } 293 294 return NULL; 295 } 296 297 298 int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, 299 const char *file_name, size_t offset, size_t size, 300 char *reply, size_t buf_len) 301 { 302 struct icon_entry *icon; 303 size_t out_size; 304 unsigned char *b64; 305 size_t b64_size; 306 int reply_size; 307 308 wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)", 309 MAC2STR(bssid), file_name, (unsigned int) offset, 310 (unsigned int) size, (unsigned int) buf_len); 311 312 icon = hs20_find_icon(wpa_s, bssid, file_name); 313 if (!icon || !icon->image || offset >= icon->image_len) 314 return -1; 315 if (size > icon->image_len - offset) 316 size = icon->image_len - offset; 317 out_size = buf_len - 3 /* max base64 padding */; 318 if (size * 4 > out_size * 3) 319 size = out_size * 3 / 4; 320 if (size == 0) 321 return -1; 322 323 b64 = base64_encode(&icon->image[offset], size, &b64_size); 324 if (b64 && buf_len >= b64_size) { 325 os_memcpy(reply, b64, b64_size); 326 reply_size = b64_size; 327 } else { 328 reply_size = -1; 329 } 330 os_free(b64); 331 return reply_size; 332 } 333 334 335 static void hs20_free_icon_entry(struct icon_entry *icon) 336 { 337 wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR 338 " dialog_token=%u file_name=%s image_len=%u", 339 MAC2STR(icon->bssid), icon->dialog_token, 340 icon->file_name ? icon->file_name : "N/A", 341 (unsigned int) icon->image_len); 342 os_free(icon->file_name); 343 os_free(icon->image); 344 os_free(icon); 345 } 346 347 348 int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid, 349 const char *file_name) 350 { 351 struct icon_entry *icon, *tmp; 352 int count = 0; 353 354 if (!bssid) 355 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons"); 356 else if (!file_name) 357 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for " 358 MACSTR, MAC2STR(bssid)); 359 else 360 wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for " 361 MACSTR " file name %s", MAC2STR(bssid), file_name); 362 363 dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry, 364 list) { 365 if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) && 366 (!file_name || 367 os_strcmp(icon->file_name, file_name) == 0)) { 368 dl_list_del(&icon->list); 369 hs20_free_icon_entry(icon); 370 count++; 371 } 372 } 373 return count == 0 ? -1 : 0; 374 } 375 376 377 static void hs20_set_osu_access_permission(const char *osu_dir, 378 const char *fname) 379 { 380 struct stat statbuf; 381 382 /* Get OSU directory information */ 383 if (stat(osu_dir, &statbuf) < 0) { 384 wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s", 385 osu_dir); 386 return; 387 } 388 389 if (chmod(fname, statbuf.st_mode) < 0) { 390 wpa_printf(MSG_WARNING, 391 "Cannot change the permissions for %s", fname); 392 return; 393 } 394 395 if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) { 396 wpa_printf(MSG_WARNING, "Cannot change the ownership for %s", 397 fname); 398 } 399 } 400 401 402 static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s, 403 struct icon_entry *new_icon) 404 { 405 struct icon_entry *icon, *tmp; 406 407 dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry, 408 list) { 409 if (icon == new_icon) 410 continue; 411 if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 && 412 os_strcmp(icon->file_name, new_icon->file_name) == 0) { 413 dl_list_del(&icon->list); 414 hs20_free_icon_entry(icon); 415 } 416 } 417 } 418 419 420 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s, 421 const u8 *sa, const u8 *pos, 422 size_t slen, u8 dialog_token) 423 { 424 char fname[256]; 425 int png; 426 FILE *f; 427 u16 data_len; 428 struct icon_entry *icon; 429 430 dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) { 431 if (icon->dialog_token == dialog_token && !icon->image && 432 os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) { 433 icon->image = os_memdup(pos, slen); 434 if (!icon->image) 435 return -1; 436 icon->image_len = slen; 437 hs20_remove_duplicate_icons(wpa_s, icon); 438 wpa_msg(wpa_s, MSG_INFO, 439 RX_HS20_ICON MACSTR " %s %u", 440 MAC2STR(sa), icon->file_name, 441 (unsigned int) icon->image_len); 442 wpas_notify_hs20_icon_query_done(wpa_s, sa, 443 icon->file_name, 444 icon->image, 445 icon->image_len); 446 return 0; 447 } 448 } 449 450 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR " Icon Binary File", 451 MAC2STR(sa)); 452 453 if (slen < 4) { 454 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 455 "value from " MACSTR, MAC2STR(sa)); 456 return -1; 457 } 458 459 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos); 460 if (*pos != 0) 461 return -1; 462 pos++; 463 slen--; 464 465 if ((size_t) 1 + pos[0] > slen) { 466 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 467 "value from " MACSTR, MAC2STR(sa)); 468 return -1; 469 } 470 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]); 471 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0; 472 slen -= 1 + pos[0]; 473 pos += 1 + pos[0]; 474 475 if (slen < 2) { 476 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 477 "value from " MACSTR, MAC2STR(sa)); 478 return -1; 479 } 480 data_len = WPA_GET_LE16(pos); 481 pos += 2; 482 slen -= 2; 483 484 if (data_len > slen) { 485 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 486 "value from " MACSTR, MAC2STR(sa)); 487 return -1; 488 } 489 490 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len); 491 if (wpa_s->conf->osu_dir == NULL) 492 return -1; 493 494 wpa_s->osu_icon_id++; 495 if (wpa_s->osu_icon_id == 0) 496 wpa_s->osu_icon_id++; 497 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s", 498 wpa_s->conf->osu_dir, wpa_s->osu_icon_id, 499 png ? "png" : "icon"); 500 f = fopen(fname, "wb"); 501 if (f == NULL) 502 return -1; 503 504 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 505 506 if (fwrite(pos, slen, 1, f) != 1) { 507 fclose(f); 508 unlink(fname); 509 return -1; 510 } 511 fclose(f); 512 513 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP_ICON "%s", fname); 514 return 0; 515 } 516 517 518 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx) 519 { 520 struct wpa_supplicant *wpa_s = eloop_ctx; 521 if (wpa_s->fetch_osu_icon_in_progress) 522 hs20_next_osu_icon(wpa_s); 523 } 524 525 526 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res) 527 { 528 size_t i, j; 529 struct os_reltime now, tmp; 530 int dur; 531 532 os_get_reltime(&now); 533 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp); 534 dur = tmp.sec * 1000 + tmp.usec / 1000; 535 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d", 536 dur, res); 537 538 for (i = 0; i < wpa_s->osu_prov_count; i++) { 539 struct osu_provider *osu = &wpa_s->osu_prov[i]; 540 for (j = 0; j < osu->icon_count; j++) { 541 struct osu_icon *icon = &osu->icon[j]; 542 if (icon->id || icon->failed) 543 continue; 544 if (res < 0) 545 icon->failed = 1; 546 else 547 icon->id = wpa_s->osu_icon_id; 548 return; 549 } 550 } 551 } 552 553 554 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s, 555 struct wpa_bss *bss, const u8 *sa, 556 const u8 *data, size_t slen, u8 dialog_token) 557 { 558 const u8 *pos = data; 559 u8 subtype; 560 struct wpa_bss_anqp *anqp = NULL; 561 int ret; 562 563 if (slen < 2) 564 return; 565 566 if (bss) 567 anqp = bss->anqp; 568 569 subtype = *pos++; 570 slen--; 571 572 pos++; /* Reserved */ 573 slen--; 574 575 switch (subtype) { 576 case HS20_STYPE_CAPABILITY_LIST: 577 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 578 " HS Capability List", MAC2STR(sa)); 579 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); 580 if (anqp) { 581 wpabuf_free(anqp->hs20_capability_list); 582 anqp->hs20_capability_list = 583 wpabuf_alloc_copy(pos, slen); 584 } 585 break; 586 case HS20_STYPE_OPERATOR_FRIENDLY_NAME: 587 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 588 " Operator Friendly Name", MAC2STR(sa)); 589 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); 590 if (anqp) { 591 wpabuf_free(anqp->hs20_operator_friendly_name); 592 anqp->hs20_operator_friendly_name = 593 wpabuf_alloc_copy(pos, slen); 594 } 595 break; 596 case HS20_STYPE_WAN_METRICS: 597 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen); 598 if (slen < 13) { 599 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN " 600 "Metrics value from " MACSTR, MAC2STR(sa)); 601 break; 602 } 603 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 604 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa), 605 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5), 606 pos[9], pos[10], WPA_GET_LE16(pos + 11)); 607 if (anqp) { 608 wpabuf_free(anqp->hs20_wan_metrics); 609 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); 610 } 611 break; 612 case HS20_STYPE_CONNECTION_CAPABILITY: 613 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 614 " Connection Capability", MAC2STR(sa)); 615 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); 616 if (anqp) { 617 wpabuf_free(anqp->hs20_connection_capability); 618 anqp->hs20_connection_capability = 619 wpabuf_alloc_copy(pos, slen); 620 } 621 break; 622 case HS20_STYPE_OPERATING_CLASS: 623 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 624 " Operating Class", MAC2STR(sa)); 625 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); 626 if (anqp) { 627 wpabuf_free(anqp->hs20_operating_class); 628 anqp->hs20_operating_class = 629 wpabuf_alloc_copy(pos, slen); 630 } 631 break; 632 case HS20_STYPE_OSU_PROVIDERS_LIST: 633 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 634 " OSU Providers list", MAC2STR(sa)); 635 wpa_s->num_prov_found++; 636 if (anqp) { 637 wpabuf_free(anqp->hs20_osu_providers_list); 638 anqp->hs20_osu_providers_list = 639 wpabuf_alloc_copy(pos, slen); 640 } 641 break; 642 case HS20_STYPE_ICON_BINARY_FILE: 643 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen, 644 dialog_token); 645 if (wpa_s->fetch_osu_icon_in_progress) { 646 hs20_osu_icon_fetch_result(wpa_s, ret); 647 eloop_cancel_timeout(hs20_continue_icon_fetch, 648 wpa_s, NULL); 649 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, 650 wpa_s, NULL); 651 } 652 break; 653 default: 654 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); 655 break; 656 } 657 } 658 659 660 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s) 661 { 662 if (!wpa_s->fetch_osu_icon_in_progress) 663 return; 664 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL)) 665 return; 666 /* 667 * We are going through icon fetch, but no icon response was received. 668 * Assume this means the current AP could not provide an answer to avoid 669 * getting stuck in fetch iteration. 670 */ 671 hs20_icon_fetch_failed(wpa_s); 672 } 673 674 675 static void hs20_free_osu_prov_entry(struct osu_provider *prov) 676 { 677 } 678 679 680 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s) 681 { 682 size_t i; 683 for (i = 0; i < wpa_s->osu_prov_count; i++) 684 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]); 685 os_free(wpa_s->osu_prov); 686 wpa_s->osu_prov = NULL; 687 wpa_s->osu_prov_count = 0; 688 } 689 690 691 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s) 692 { 693 char fname[256]; 694 FILE *f; 695 size_t i, j; 696 697 wpa_s->fetch_osu_info = 0; 698 wpa_s->fetch_osu_icon_in_progress = 0; 699 700 if (wpa_s->conf->osu_dir == NULL) { 701 hs20_free_osu_prov(wpa_s); 702 wpa_s->fetch_anqp_in_progress = 0; 703 return; 704 } 705 706 snprintf(fname, sizeof(fname), "%s/osu-providers.txt", 707 wpa_s->conf->osu_dir); 708 f = fopen(fname, "w"); 709 if (f == NULL) { 710 wpa_msg(wpa_s, MSG_INFO, 711 "Could not write OSU provider information"); 712 hs20_free_osu_prov(wpa_s); 713 wpa_s->fetch_anqp_in_progress = 0; 714 return; 715 } 716 717 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 718 719 for (i = 0; i < wpa_s->osu_prov_count; i++) { 720 struct osu_provider *osu = &wpa_s->osu_prov[i]; 721 if (i > 0) 722 fprintf(f, "\n"); 723 fprintf(f, "OSU-PROVIDER " MACSTR "\n" 724 "uri=%s\n" 725 "methods=%08x\n", 726 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods); 727 if (osu->osu_ssid_len) { 728 fprintf(f, "osu_ssid=%s\n", 729 wpa_ssid_txt(osu->osu_ssid, 730 osu->osu_ssid_len)); 731 } 732 if (osu->osu_nai[0]) 733 fprintf(f, "osu_nai=%s\n", osu->osu_nai); 734 for (j = 0; j < osu->friendly_name_count; j++) { 735 fprintf(f, "friendly_name=%s:%s\n", 736 osu->friendly_name[j].lang, 737 osu->friendly_name[j].text); 738 } 739 for (j = 0; j < osu->serv_desc_count; j++) { 740 fprintf(f, "desc=%s:%s\n", 741 osu->serv_desc[j].lang, 742 osu->serv_desc[j].text); 743 } 744 for (j = 0; j < osu->icon_count; j++) { 745 struct osu_icon *icon = &osu->icon[j]; 746 if (icon->failed) 747 continue; /* could not fetch icon */ 748 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n", 749 icon->id, icon->width, icon->height, icon->lang, 750 icon->icon_type, icon->filename); 751 } 752 } 753 fclose(f); 754 hs20_free_osu_prov(wpa_s); 755 756 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed"); 757 wpa_s->fetch_anqp_in_progress = 0; 758 } 759 760 761 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s) 762 { 763 size_t i, j; 764 765 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon"); 766 767 for (i = 0; i < wpa_s->osu_prov_count; i++) { 768 struct osu_provider *osu = &wpa_s->osu_prov[i]; 769 for (j = 0; j < osu->icon_count; j++) { 770 struct osu_icon *icon = &osu->icon[j]; 771 if (icon->id || icon->failed) 772 continue; 773 774 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' " 775 "from " MACSTR, icon->filename, 776 MAC2STR(osu->bssid)); 777 os_get_reltime(&wpa_s->osu_icon_fetch_start); 778 if (hs20_anqp_send_req(wpa_s, osu->bssid, 779 BIT(HS20_STYPE_ICON_REQUEST), 780 (u8 *) icon->filename, 781 os_strlen(icon->filename), 782 0) < 0) { 783 icon->failed = 1; 784 continue; 785 } 786 return; 787 } 788 } 789 790 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch"); 791 hs20_osu_fetch_done(wpa_s); 792 } 793 794 795 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 796 const u8 *osu_ssid, u8 osu_ssid_len, 797 const u8 *pos, size_t len) 798 { 799 struct osu_provider *prov; 800 const u8 *end = pos + len; 801 u16 len2; 802 const u8 *pos2; 803 u8 uri_len, osu_method_len, osu_nai_len; 804 805 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len); 806 prov = os_realloc_array(wpa_s->osu_prov, 807 wpa_s->osu_prov_count + 1, 808 sizeof(*prov)); 809 if (prov == NULL) 810 return; 811 wpa_s->osu_prov = prov; 812 prov = &prov[wpa_s->osu_prov_count]; 813 os_memset(prov, 0, sizeof(*prov)); 814 815 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN); 816 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len); 817 prov->osu_ssid_len = osu_ssid_len; 818 819 /* OSU Friendly Name Length */ 820 if (end - pos < 2) { 821 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 822 "Friendly Name Length"); 823 return; 824 } 825 len2 = WPA_GET_LE16(pos); 826 pos += 2; 827 if (len2 > end - pos) { 828 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 829 "Friendly Name Duples"); 830 return; 831 } 832 pos2 = pos; 833 pos += len2; 834 835 /* OSU Friendly Name Duples */ 836 while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) { 837 struct osu_lang_string *f; 838 if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) { 839 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name"); 840 break; 841 } 842 f = &prov->friendly_name[prov->friendly_name_count++]; 843 os_memcpy(f->lang, pos2 + 1, 3); 844 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3); 845 pos2 += 1 + pos2[0]; 846 } 847 848 /* OSU Server URI */ 849 if (end - pos < 1) { 850 wpa_printf(MSG_DEBUG, 851 "HS 2.0: Not enough room for OSU Server URI length"); 852 return; 853 } 854 uri_len = *pos++; 855 if (uri_len > end - pos) { 856 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server " 857 "URI"); 858 return; 859 } 860 os_memcpy(prov->server_uri, pos, uri_len); 861 pos += uri_len; 862 863 /* OSU Method list */ 864 if (end - pos < 1) { 865 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 866 "list length"); 867 return; 868 } 869 osu_method_len = pos[0]; 870 if (osu_method_len > end - pos - 1) { 871 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 872 "list"); 873 return; 874 } 875 pos2 = pos + 1; 876 pos += 1 + osu_method_len; 877 while (pos2 < pos) { 878 if (*pos2 < 32) 879 prov->osu_methods |= BIT(*pos2); 880 pos2++; 881 } 882 883 /* Icons Available Length */ 884 if (end - pos < 2) { 885 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 886 "Available Length"); 887 return; 888 } 889 len2 = WPA_GET_LE16(pos); 890 pos += 2; 891 if (len2 > end - pos) { 892 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 893 "Available"); 894 return; 895 } 896 pos2 = pos; 897 pos += len2; 898 899 /* Icons Available */ 900 while (pos2 < pos) { 901 struct osu_icon *icon = &prov->icon[prov->icon_count]; 902 u8 flen; 903 904 if (2 + 2 + 3 + 1 + 1 > pos - pos2) { 905 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata"); 906 break; 907 } 908 909 icon->width = WPA_GET_LE16(pos2); 910 pos2 += 2; 911 icon->height = WPA_GET_LE16(pos2); 912 pos2 += 2; 913 os_memcpy(icon->lang, pos2, 3); 914 pos2 += 3; 915 916 flen = *pos2++; 917 if (flen > pos - pos2) { 918 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type"); 919 break; 920 } 921 os_memcpy(icon->icon_type, pos2, flen); 922 pos2 += flen; 923 924 if (pos - pos2 < 1) { 925 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 926 "Filename length"); 927 break; 928 } 929 flen = *pos2++; 930 if (flen > pos - pos2) { 931 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 932 "Filename"); 933 break; 934 } 935 os_memcpy(icon->filename, pos2, flen); 936 pos2 += flen; 937 938 prov->icon_count++; 939 } 940 941 /* OSU_NAI */ 942 if (end - pos < 1) { 943 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 944 return; 945 } 946 osu_nai_len = *pos++; 947 if (osu_nai_len > end - pos) { 948 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 949 return; 950 } 951 os_memcpy(prov->osu_nai, pos, osu_nai_len); 952 pos += osu_nai_len; 953 954 /* OSU Service Description Length */ 955 if (end - pos < 2) { 956 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 957 "Service Description Length"); 958 return; 959 } 960 len2 = WPA_GET_LE16(pos); 961 pos += 2; 962 if (len2 > end - pos) { 963 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 964 "Service Description Duples"); 965 return; 966 } 967 pos2 = pos; 968 pos += len2; 969 970 /* OSU Service Description Duples */ 971 while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) { 972 struct osu_lang_string *f; 973 u8 descr_len; 974 975 descr_len = *pos2++; 976 if (descr_len > pos - pos2 || descr_len < 3) { 977 wpa_printf(MSG_DEBUG, "Invalid OSU Service " 978 "Description"); 979 break; 980 } 981 f = &prov->serv_desc[prov->serv_desc_count++]; 982 os_memcpy(f->lang, pos2, 3); 983 os_memcpy(f->text, pos2 + 3, descr_len - 3); 984 pos2 += descr_len; 985 } 986 987 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR, 988 MAC2STR(bss->bssid)); 989 wpa_s->osu_prov_count++; 990 } 991 992 993 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s) 994 { 995 struct wpa_bss *bss; 996 struct wpabuf *prov_anqp; 997 const u8 *pos, *end; 998 u16 len; 999 const u8 *osu_ssid; 1000 u8 osu_ssid_len; 1001 u8 num_providers; 1002 1003 hs20_free_osu_prov(wpa_s); 1004 1005 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1006 if (bss->anqp == NULL) 1007 continue; 1008 prov_anqp = bss->anqp->hs20_osu_providers_list; 1009 if (prov_anqp == NULL) 1010 continue; 1011 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from " 1012 MACSTR, MAC2STR(bss->bssid)); 1013 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list", 1014 prov_anqp); 1015 pos = wpabuf_head(prov_anqp); 1016 end = pos + wpabuf_len(prov_anqp); 1017 1018 /* OSU SSID */ 1019 if (end - pos < 1) 1020 continue; 1021 if (1 + pos[0] > end - pos) { 1022 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 1023 "OSU SSID"); 1024 continue; 1025 } 1026 osu_ssid_len = *pos++; 1027 if (osu_ssid_len > SSID_MAX_LEN) { 1028 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID " 1029 "Length %u", osu_ssid_len); 1030 continue; 1031 } 1032 osu_ssid = pos; 1033 pos += osu_ssid_len; 1034 1035 if (end - pos < 1) { 1036 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 1037 "Number of OSU Providers"); 1038 continue; 1039 } 1040 num_providers = *pos++; 1041 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u", 1042 num_providers); 1043 1044 /* OSU Providers */ 1045 while (end - pos > 2 && num_providers > 0) { 1046 num_providers--; 1047 len = WPA_GET_LE16(pos); 1048 pos += 2; 1049 if (len > (unsigned int) (end - pos)) 1050 break; 1051 hs20_osu_add_prov(wpa_s, bss, osu_ssid, 1052 osu_ssid_len, pos, len); 1053 pos += len; 1054 } 1055 1056 if (pos != end) { 1057 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of " 1058 "extra data after OSU Providers", 1059 (int) (end - pos)); 1060 } 1061 } 1062 1063 wpa_s->fetch_osu_icon_in_progress = 1; 1064 hs20_next_osu_icon(wpa_s); 1065 } 1066 1067 1068 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s, 1069 struct wpa_scan_results *scan_res) 1070 { 1071 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed"); 1072 if (!wpa_s->fetch_osu_waiting_scan) { 1073 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled"); 1074 return; 1075 } 1076 wpa_s->network_select = 0; 1077 wpa_s->fetch_all_anqp = 1; 1078 wpa_s->fetch_osu_info = 1; 1079 wpa_s->fetch_osu_icon_in_progress = 0; 1080 1081 interworking_start_fetch_anqp(wpa_s); 1082 } 1083 1084 1085 int hs20_fetch_osu(struct wpa_supplicant *wpa_s, int skip_scan) 1086 { 1087 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 1088 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1089 "interface disabled"); 1090 return -1; 1091 } 1092 1093 if (wpa_s->scanning) { 1094 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1095 "scanning"); 1096 return -1; 1097 } 1098 1099 if (wpa_s->conf->osu_dir == NULL) { 1100 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1101 "osu_dir not configured"); 1102 return -1; 1103 } 1104 1105 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) { 1106 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1107 "fetch in progress (%d, %d)", 1108 wpa_s->fetch_anqp_in_progress, 1109 wpa_s->network_select); 1110 return -1; 1111 } 1112 1113 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch"); 1114 wpa_s->num_osu_scans = 0; 1115 wpa_s->num_prov_found = 0; 1116 if (skip_scan) { 1117 wpa_s->network_select = 0; 1118 wpa_s->fetch_all_anqp = 1; 1119 wpa_s->fetch_osu_info = 1; 1120 wpa_s->fetch_osu_icon_in_progress = 0; 1121 1122 interworking_start_fetch_anqp(wpa_s); 1123 } else { 1124 hs20_start_osu_scan(wpa_s); 1125 } 1126 1127 return 0; 1128 } 1129 1130 1131 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s) 1132 { 1133 wpa_s->fetch_osu_waiting_scan = 1; 1134 wpa_s->num_osu_scans++; 1135 wpa_s->scan_req = MANUAL_SCAN_REQ; 1136 wpa_s->scan_res_handler = hs20_osu_scan_res_handler; 1137 wpa_supplicant_req_scan(wpa_s, 0, 0); 1138 } 1139 1140 1141 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s) 1142 { 1143 wpa_printf(MSG_DEBUG, "Cancel OSU fetch"); 1144 interworking_stop_fetch_anqp(wpa_s); 1145 wpa_s->fetch_osu_waiting_scan = 0; 1146 wpa_s->network_select = 0; 1147 wpa_s->fetch_osu_info = 0; 1148 wpa_s->fetch_osu_icon_in_progress = 0; 1149 } 1150 1151 1152 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s) 1153 { 1154 hs20_osu_icon_fetch_result(wpa_s, -1); 1155 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1156 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL); 1157 } 1158 1159 1160 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s, 1161 const char *url, u8 osu_method) 1162 { 1163 if (url) 1164 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s", 1165 osu_method, url); 1166 else 1167 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION); 1168 wpas_notify_hs20_rx_subscription_remediation(wpa_s, url, osu_method); 1169 } 1170 1171 1172 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code, 1173 u16 reauth_delay, const char *url) 1174 { 1175 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) { 1176 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled"); 1177 return; 1178 } 1179 1180 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s", 1181 code, reauth_delay, url); 1182 wpas_notify_hs20_rx_deauth_imminent_notice(wpa_s, code, reauth_delay, url); 1183 1184 if (code == HS20_DEAUTH_REASON_CODE_BSS) { 1185 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist"); 1186 wpa_blacklist_add(wpa_s, wpa_s->bssid); 1187 /* TODO: For now, disable full ESS since some drivers may not 1188 * support disabling per BSS. */ 1189 if (wpa_s->current_ssid) { 1190 struct os_reltime now; 1191 os_get_reltime(&now); 1192 if (now.sec + reauth_delay <= 1193 wpa_s->current_ssid->disabled_until.sec) 1194 return; 1195 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)", 1196 reauth_delay); 1197 wpa_s->current_ssid->disabled_until.sec = 1198 now.sec + reauth_delay; 1199 } 1200 } 1201 1202 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) { 1203 struct os_reltime now; 1204 os_get_reltime(&now); 1205 if (now.sec + reauth_delay <= 1206 wpa_s->current_ssid->disabled_until.sec) 1207 return; 1208 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds", 1209 reauth_delay); 1210 wpa_s->current_ssid->disabled_until.sec = 1211 now.sec + reauth_delay; 1212 } 1213 } 1214 1215 1216 void hs20_init(struct wpa_supplicant *wpa_s) 1217 { 1218 dl_list_init(&wpa_s->icon_head); 1219 } 1220 1221 1222 void hs20_deinit(struct wpa_supplicant *wpa_s) 1223 { 1224 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1225 hs20_free_osu_prov(wpa_s); 1226 if (wpa_s->icon_head.next) 1227 hs20_del_icon(wpa_s, NULL, NULL); 1228 } 1229
