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 34struct osu_lang_string { 35 char lang[4]; 36 char text[253]; 37}; 38 39struct 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 49struct 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 65void 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 105void 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 122int 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 151int 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 173void 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 209static 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 224int 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 282static 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 298int 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 335static 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 348int 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 377static 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 402static 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 420static 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_malloc(slen); 434 if (!icon->image) 435 return -1; 436 os_memcpy(icon->image, pos, slen); 437 icon->image_len = slen; 438 hs20_remove_duplicate_icons(wpa_s, icon); 439 wpa_msg(wpa_s, MSG_INFO, 440 RX_HS20_ICON MACSTR " %s %u", 441 MAC2STR(sa), icon->file_name, 442 (unsigned int) icon->image_len); 443 wpas_notify_hs20_icon_query_done(wpa_s, sa, 444 icon->file_name, 445 icon->image, 446 icon->image_len); 447 return 0; 448 } 449 } 450 451 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR " Icon Binary File", 452 MAC2STR(sa)); 453 454 if (slen < 4) { 455 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 456 "value from " MACSTR, MAC2STR(sa)); 457 return -1; 458 } 459 460 wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos); 461 if (*pos != 0) 462 return -1; 463 pos++; 464 slen--; 465 466 if ((size_t) 1 + pos[0] > slen) { 467 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 468 "value from " MACSTR, MAC2STR(sa)); 469 return -1; 470 } 471 wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]); 472 png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0; 473 slen -= 1 + pos[0]; 474 pos += 1 + pos[0]; 475 476 if (slen < 2) { 477 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 478 "value from " MACSTR, MAC2STR(sa)); 479 return -1; 480 } 481 data_len = WPA_GET_LE16(pos); 482 pos += 2; 483 slen -= 2; 484 485 if (data_len > slen) { 486 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File " 487 "value from " MACSTR, MAC2STR(sa)); 488 return -1; 489 } 490 491 wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len); 492 if (wpa_s->conf->osu_dir == NULL) 493 return -1; 494 495 wpa_s->osu_icon_id++; 496 if (wpa_s->osu_icon_id == 0) 497 wpa_s->osu_icon_id++; 498 snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s", 499 wpa_s->conf->osu_dir, wpa_s->osu_icon_id, 500 png ? "png" : "icon"); 501 f = fopen(fname, "wb"); 502 if (f == NULL) 503 return -1; 504 505 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 506 507 if (fwrite(pos, slen, 1, f) != 1) { 508 fclose(f); 509 unlink(fname); 510 return -1; 511 } 512 fclose(f); 513 514 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP_ICON "%s", fname); 515 return 0; 516} 517 518 519static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx) 520{ 521 struct wpa_supplicant *wpa_s = eloop_ctx; 522 if (wpa_s->fetch_osu_icon_in_progress) 523 hs20_next_osu_icon(wpa_s); 524} 525 526 527static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res) 528{ 529 size_t i, j; 530 struct os_reltime now, tmp; 531 int dur; 532 533 os_get_reltime(&now); 534 os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp); 535 dur = tmp.sec * 1000 + tmp.usec / 1000; 536 wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d", 537 dur, res); 538 539 for (i = 0; i < wpa_s->osu_prov_count; i++) { 540 struct osu_provider *osu = &wpa_s->osu_prov[i]; 541 for (j = 0; j < osu->icon_count; j++) { 542 struct osu_icon *icon = &osu->icon[j]; 543 if (icon->id || icon->failed) 544 continue; 545 if (res < 0) 546 icon->failed = 1; 547 else 548 icon->id = wpa_s->osu_icon_id; 549 return; 550 } 551 } 552} 553 554 555void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s, 556 struct wpa_bss *bss, const u8 *sa, 557 const u8 *data, size_t slen, u8 dialog_token) 558{ 559 const u8 *pos = data; 560 u8 subtype; 561 struct wpa_bss_anqp *anqp = NULL; 562 int ret; 563 564 if (slen < 2) 565 return; 566 567 if (bss) 568 anqp = bss->anqp; 569 570 subtype = *pos++; 571 slen--; 572 573 pos++; /* Reserved */ 574 slen--; 575 576 switch (subtype) { 577 case HS20_STYPE_CAPABILITY_LIST: 578 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 579 " HS Capability List", MAC2STR(sa)); 580 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); 581 if (anqp) { 582 wpabuf_free(anqp->hs20_capability_list); 583 anqp->hs20_capability_list = 584 wpabuf_alloc_copy(pos, slen); 585 } 586 break; 587 case HS20_STYPE_OPERATOR_FRIENDLY_NAME: 588 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 589 " Operator Friendly Name", MAC2STR(sa)); 590 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); 591 if (anqp) { 592 wpabuf_free(anqp->hs20_operator_friendly_name); 593 anqp->hs20_operator_friendly_name = 594 wpabuf_alloc_copy(pos, slen); 595 } 596 break; 597 case HS20_STYPE_WAN_METRICS: 598 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen); 599 if (slen < 13) { 600 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN " 601 "Metrics value from " MACSTR, MAC2STR(sa)); 602 break; 603 } 604 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 605 " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa), 606 pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5), 607 pos[9], pos[10], WPA_GET_LE16(pos + 11)); 608 if (anqp) { 609 wpabuf_free(anqp->hs20_wan_metrics); 610 anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); 611 } 612 break; 613 case HS20_STYPE_CONNECTION_CAPABILITY: 614 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 615 " Connection Capability", MAC2STR(sa)); 616 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); 617 if (anqp) { 618 wpabuf_free(anqp->hs20_connection_capability); 619 anqp->hs20_connection_capability = 620 wpabuf_alloc_copy(pos, slen); 621 } 622 break; 623 case HS20_STYPE_OPERATING_CLASS: 624 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 625 " Operating Class", MAC2STR(sa)); 626 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); 627 if (anqp) { 628 wpabuf_free(anqp->hs20_operating_class); 629 anqp->hs20_operating_class = 630 wpabuf_alloc_copy(pos, slen); 631 } 632 break; 633 case HS20_STYPE_OSU_PROVIDERS_LIST: 634 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR 635 " OSU Providers list", MAC2STR(sa)); 636 wpa_s->num_prov_found++; 637 if (anqp) { 638 wpabuf_free(anqp->hs20_osu_providers_list); 639 anqp->hs20_osu_providers_list = 640 wpabuf_alloc_copy(pos, slen); 641 } 642 break; 643 case HS20_STYPE_ICON_BINARY_FILE: 644 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen, 645 dialog_token); 646 if (wpa_s->fetch_osu_icon_in_progress) { 647 hs20_osu_icon_fetch_result(wpa_s, ret); 648 eloop_cancel_timeout(hs20_continue_icon_fetch, 649 wpa_s, NULL); 650 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, 651 wpa_s, NULL); 652 } 653 break; 654 default: 655 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); 656 break; 657 } 658} 659 660 661void hs20_notify_parse_done(struct wpa_supplicant *wpa_s) 662{ 663 if (!wpa_s->fetch_osu_icon_in_progress) 664 return; 665 if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL)) 666 return; 667 /* 668 * We are going through icon fetch, but no icon response was received. 669 * Assume this means the current AP could not provide an answer to avoid 670 * getting stuck in fetch iteration. 671 */ 672 hs20_icon_fetch_failed(wpa_s); 673} 674 675 676static void hs20_free_osu_prov_entry(struct osu_provider *prov) 677{ 678} 679 680 681void hs20_free_osu_prov(struct wpa_supplicant *wpa_s) 682{ 683 size_t i; 684 for (i = 0; i < wpa_s->osu_prov_count; i++) 685 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]); 686 os_free(wpa_s->osu_prov); 687 wpa_s->osu_prov = NULL; 688 wpa_s->osu_prov_count = 0; 689} 690 691 692static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s) 693{ 694 char fname[256]; 695 FILE *f; 696 size_t i, j; 697 698 wpa_s->fetch_osu_info = 0; 699 wpa_s->fetch_osu_icon_in_progress = 0; 700 701 if (wpa_s->conf->osu_dir == NULL) { 702 hs20_free_osu_prov(wpa_s); 703 wpa_s->fetch_anqp_in_progress = 0; 704 return; 705 } 706 707 snprintf(fname, sizeof(fname), "%s/osu-providers.txt", 708 wpa_s->conf->osu_dir); 709 f = fopen(fname, "w"); 710 if (f == NULL) { 711 wpa_msg(wpa_s, MSG_INFO, 712 "Could not write OSU provider information"); 713 hs20_free_osu_prov(wpa_s); 714 wpa_s->fetch_anqp_in_progress = 0; 715 return; 716 } 717 718 hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname); 719 720 for (i = 0; i < wpa_s->osu_prov_count; i++) { 721 struct osu_provider *osu = &wpa_s->osu_prov[i]; 722 if (i > 0) 723 fprintf(f, "\n"); 724 fprintf(f, "OSU-PROVIDER " MACSTR "\n" 725 "uri=%s\n" 726 "methods=%08x\n", 727 MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods); 728 if (osu->osu_ssid_len) { 729 fprintf(f, "osu_ssid=%s\n", 730 wpa_ssid_txt(osu->osu_ssid, 731 osu->osu_ssid_len)); 732 } 733 if (osu->osu_nai[0]) 734 fprintf(f, "osu_nai=%s\n", osu->osu_nai); 735 for (j = 0; j < osu->friendly_name_count; j++) { 736 fprintf(f, "friendly_name=%s:%s\n", 737 osu->friendly_name[j].lang, 738 osu->friendly_name[j].text); 739 } 740 for (j = 0; j < osu->serv_desc_count; j++) { 741 fprintf(f, "desc=%s:%s\n", 742 osu->serv_desc[j].lang, 743 osu->serv_desc[j].text); 744 } 745 for (j = 0; j < osu->icon_count; j++) { 746 struct osu_icon *icon = &osu->icon[j]; 747 if (icon->failed) 748 continue; /* could not fetch icon */ 749 fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n", 750 icon->id, icon->width, icon->height, icon->lang, 751 icon->icon_type, icon->filename); 752 } 753 } 754 fclose(f); 755 hs20_free_osu_prov(wpa_s); 756 757 wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed"); 758 wpa_s->fetch_anqp_in_progress = 0; 759} 760 761 762void hs20_next_osu_icon(struct wpa_supplicant *wpa_s) 763{ 764 size_t i, j; 765 766 wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon"); 767 768 for (i = 0; i < wpa_s->osu_prov_count; i++) { 769 struct osu_provider *osu = &wpa_s->osu_prov[i]; 770 for (j = 0; j < osu->icon_count; j++) { 771 struct osu_icon *icon = &osu->icon[j]; 772 if (icon->id || icon->failed) 773 continue; 774 775 wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' " 776 "from " MACSTR, icon->filename, 777 MAC2STR(osu->bssid)); 778 os_get_reltime(&wpa_s->osu_icon_fetch_start); 779 if (hs20_anqp_send_req(wpa_s, osu->bssid, 780 BIT(HS20_STYPE_ICON_REQUEST), 781 (u8 *) icon->filename, 782 os_strlen(icon->filename), 783 0) < 0) { 784 icon->failed = 1; 785 continue; 786 } 787 return; 788 } 789 } 790 791 wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch"); 792 hs20_osu_fetch_done(wpa_s); 793} 794 795 796static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 797 const u8 *osu_ssid, u8 osu_ssid_len, 798 const u8 *pos, size_t len) 799{ 800 struct osu_provider *prov; 801 const u8 *end = pos + len; 802 u16 len2; 803 const u8 *pos2; 804 u8 uri_len, osu_method_len, osu_nai_len; 805 806 wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len); 807 prov = os_realloc_array(wpa_s->osu_prov, 808 wpa_s->osu_prov_count + 1, 809 sizeof(*prov)); 810 if (prov == NULL) 811 return; 812 wpa_s->osu_prov = prov; 813 prov = &prov[wpa_s->osu_prov_count]; 814 os_memset(prov, 0, sizeof(*prov)); 815 816 os_memcpy(prov->bssid, bss->bssid, ETH_ALEN); 817 os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len); 818 prov->osu_ssid_len = osu_ssid_len; 819 820 /* OSU Friendly Name Length */ 821 if (end - pos < 2) { 822 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 823 "Friendly Name Length"); 824 return; 825 } 826 len2 = WPA_GET_LE16(pos); 827 pos += 2; 828 if (len2 > end - pos) { 829 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 830 "Friendly Name Duples"); 831 return; 832 } 833 pos2 = pos; 834 pos += len2; 835 836 /* OSU Friendly Name Duples */ 837 while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) { 838 struct osu_lang_string *f; 839 if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) { 840 wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name"); 841 break; 842 } 843 f = &prov->friendly_name[prov->friendly_name_count++]; 844 os_memcpy(f->lang, pos2 + 1, 3); 845 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3); 846 pos2 += 1 + pos2[0]; 847 } 848 849 /* OSU Server URI */ 850 if (end - pos < 1) { 851 wpa_printf(MSG_DEBUG, 852 "HS 2.0: Not enough room for OSU Server URI length"); 853 return; 854 } 855 uri_len = *pos++; 856 if (uri_len > end - pos) { 857 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server " 858 "URI"); 859 return; 860 } 861 os_memcpy(prov->server_uri, pos, uri_len); 862 pos += uri_len; 863 864 /* OSU Method list */ 865 if (end - pos < 1) { 866 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 867 "list length"); 868 return; 869 } 870 osu_method_len = pos[0]; 871 if (osu_method_len > end - pos - 1) { 872 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method " 873 "list"); 874 return; 875 } 876 pos2 = pos + 1; 877 pos += 1 + osu_method_len; 878 while (pos2 < pos) { 879 if (*pos2 < 32) 880 prov->osu_methods |= BIT(*pos2); 881 pos2++; 882 } 883 884 /* Icons Available Length */ 885 if (end - pos < 2) { 886 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 887 "Available Length"); 888 return; 889 } 890 len2 = WPA_GET_LE16(pos); 891 pos += 2; 892 if (len2 > end - pos) { 893 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons " 894 "Available"); 895 return; 896 } 897 pos2 = pos; 898 pos += len2; 899 900 /* Icons Available */ 901 while (pos2 < pos) { 902 struct osu_icon *icon = &prov->icon[prov->icon_count]; 903 u8 flen; 904 905 if (2 + 2 + 3 + 1 + 1 > pos - pos2) { 906 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata"); 907 break; 908 } 909 910 icon->width = WPA_GET_LE16(pos2); 911 pos2 += 2; 912 icon->height = WPA_GET_LE16(pos2); 913 pos2 += 2; 914 os_memcpy(icon->lang, pos2, 3); 915 pos2 += 3; 916 917 flen = *pos2++; 918 if (flen > pos - pos2) { 919 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type"); 920 break; 921 } 922 os_memcpy(icon->icon_type, pos2, flen); 923 pos2 += flen; 924 925 if (pos - pos2 < 1) { 926 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 927 "Filename length"); 928 break; 929 } 930 flen = *pos2++; 931 if (flen > pos - pos2) { 932 wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon " 933 "Filename"); 934 break; 935 } 936 os_memcpy(icon->filename, pos2, flen); 937 pos2 += flen; 938 939 prov->icon_count++; 940 } 941 942 /* OSU_NAI */ 943 if (end - pos < 1) { 944 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 945 return; 946 } 947 osu_nai_len = *pos++; 948 if (osu_nai_len > end - pos) { 949 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI"); 950 return; 951 } 952 os_memcpy(prov->osu_nai, pos, osu_nai_len); 953 pos += osu_nai_len; 954 955 /* OSU Service Description Length */ 956 if (end - pos < 2) { 957 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 958 "Service Description Length"); 959 return; 960 } 961 len2 = WPA_GET_LE16(pos); 962 pos += 2; 963 if (len2 > end - pos) { 964 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU " 965 "Service Description Duples"); 966 return; 967 } 968 pos2 = pos; 969 pos += len2; 970 971 /* OSU Service Description Duples */ 972 while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) { 973 struct osu_lang_string *f; 974 u8 descr_len; 975 976 descr_len = *pos2++; 977 if (descr_len > pos - pos2 || descr_len < 3) { 978 wpa_printf(MSG_DEBUG, "Invalid OSU Service " 979 "Description"); 980 break; 981 } 982 f = &prov->serv_desc[prov->serv_desc_count++]; 983 os_memcpy(f->lang, pos2, 3); 984 os_memcpy(f->text, pos2 + 3, descr_len - 3); 985 pos2 += descr_len; 986 } 987 988 wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR, 989 MAC2STR(bss->bssid)); 990 wpa_s->osu_prov_count++; 991} 992 993 994void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s) 995{ 996 struct wpa_bss *bss; 997 struct wpabuf *prov_anqp; 998 const u8 *pos, *end; 999 u16 len; 1000 const u8 *osu_ssid; 1001 u8 osu_ssid_len; 1002 u8 num_providers; 1003 1004 hs20_free_osu_prov(wpa_s); 1005 1006 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1007 if (bss->anqp == NULL) 1008 continue; 1009 prov_anqp = bss->anqp->hs20_osu_providers_list; 1010 if (prov_anqp == NULL) 1011 continue; 1012 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from " 1013 MACSTR, MAC2STR(bss->bssid)); 1014 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list", 1015 prov_anqp); 1016 pos = wpabuf_head(prov_anqp); 1017 end = pos + wpabuf_len(prov_anqp); 1018 1019 /* OSU SSID */ 1020 if (end - pos < 1) 1021 continue; 1022 if (1 + pos[0] > end - pos) { 1023 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 1024 "OSU SSID"); 1025 continue; 1026 } 1027 osu_ssid_len = *pos++; 1028 if (osu_ssid_len > SSID_MAX_LEN) { 1029 wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID " 1030 "Length %u", osu_ssid_len); 1031 continue; 1032 } 1033 osu_ssid = pos; 1034 pos += osu_ssid_len; 1035 1036 if (end - pos < 1) { 1037 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for " 1038 "Number of OSU Providers"); 1039 continue; 1040 } 1041 num_providers = *pos++; 1042 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u", 1043 num_providers); 1044 1045 /* OSU Providers */ 1046 while (end - pos > 2 && num_providers > 0) { 1047 num_providers--; 1048 len = WPA_GET_LE16(pos); 1049 pos += 2; 1050 if (len > (unsigned int) (end - pos)) 1051 break; 1052 hs20_osu_add_prov(wpa_s, bss, osu_ssid, 1053 osu_ssid_len, pos, len); 1054 pos += len; 1055 } 1056 1057 if (pos != end) { 1058 wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of " 1059 "extra data after OSU Providers", 1060 (int) (end - pos)); 1061 } 1062 } 1063 1064 wpa_s->fetch_osu_icon_in_progress = 1; 1065 hs20_next_osu_icon(wpa_s); 1066} 1067 1068 1069static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s, 1070 struct wpa_scan_results *scan_res) 1071{ 1072 wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed"); 1073 if (!wpa_s->fetch_osu_waiting_scan) { 1074 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled"); 1075 return; 1076 } 1077 wpa_s->network_select = 0; 1078 wpa_s->fetch_all_anqp = 1; 1079 wpa_s->fetch_osu_info = 1; 1080 wpa_s->fetch_osu_icon_in_progress = 0; 1081 1082 interworking_start_fetch_anqp(wpa_s); 1083} 1084 1085 1086int hs20_fetch_osu(struct wpa_supplicant *wpa_s, int skip_scan) 1087{ 1088 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 1089 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1090 "interface disabled"); 1091 return -1; 1092 } 1093 1094 if (wpa_s->scanning) { 1095 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1096 "scanning"); 1097 return -1; 1098 } 1099 1100 if (wpa_s->conf->osu_dir == NULL) { 1101 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1102 "osu_dir not configured"); 1103 return -1; 1104 } 1105 1106 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) { 1107 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - " 1108 "fetch in progress (%d, %d)", 1109 wpa_s->fetch_anqp_in_progress, 1110 wpa_s->network_select); 1111 return -1; 1112 } 1113 1114 wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch"); 1115 wpa_s->num_osu_scans = 0; 1116 wpa_s->num_prov_found = 0; 1117 if (skip_scan) { 1118 wpa_s->network_select = 0; 1119 wpa_s->fetch_all_anqp = 1; 1120 wpa_s->fetch_osu_info = 1; 1121 wpa_s->fetch_osu_icon_in_progress = 0; 1122 1123 interworking_start_fetch_anqp(wpa_s); 1124 } else { 1125 hs20_start_osu_scan(wpa_s); 1126 } 1127 1128 return 0; 1129} 1130 1131 1132void hs20_start_osu_scan(struct wpa_supplicant *wpa_s) 1133{ 1134 wpa_s->fetch_osu_waiting_scan = 1; 1135 wpa_s->num_osu_scans++; 1136 wpa_s->scan_req = MANUAL_SCAN_REQ; 1137 wpa_s->scan_res_handler = hs20_osu_scan_res_handler; 1138 wpa_supplicant_req_scan(wpa_s, 0, 0); 1139} 1140 1141 1142void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s) 1143{ 1144 wpa_printf(MSG_DEBUG, "Cancel OSU fetch"); 1145 interworking_stop_fetch_anqp(wpa_s); 1146 wpa_s->fetch_osu_waiting_scan = 0; 1147 wpa_s->network_select = 0; 1148 wpa_s->fetch_osu_info = 0; 1149 wpa_s->fetch_osu_icon_in_progress = 0; 1150} 1151 1152 1153void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s) 1154{ 1155 hs20_osu_icon_fetch_result(wpa_s, -1); 1156 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1157 eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL); 1158} 1159 1160 1161void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s, 1162 const char *url, u8 osu_method) 1163{ 1164 if (url) 1165 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s", 1166 osu_method, url); 1167 else 1168 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION); 1169 wpas_notify_hs20_rx_subscription_remediation(wpa_s, url, osu_method); 1170} 1171 1172 1173void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code, 1174 u16 reauth_delay, const char *url) 1175{ 1176 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) { 1177 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled"); 1178 return; 1179 } 1180 1181 wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s", 1182 code, reauth_delay, url); 1183 wpas_notify_hs20_rx_deauth_imminent_notice(wpa_s, code, reauth_delay, url); 1184 1185 if (code == HS20_DEAUTH_REASON_CODE_BSS) { 1186 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist"); 1187 wpa_blacklist_add(wpa_s, wpa_s->bssid); 1188 /* TODO: For now, disable full ESS since some drivers may not 1189 * support disabling per BSS. */ 1190 if (wpa_s->current_ssid) { 1191 struct os_reltime now; 1192 os_get_reltime(&now); 1193 if (now.sec + reauth_delay <= 1194 wpa_s->current_ssid->disabled_until.sec) 1195 return; 1196 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)", 1197 reauth_delay); 1198 wpa_s->current_ssid->disabled_until.sec = 1199 now.sec + reauth_delay; 1200 } 1201 } 1202 1203 if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) { 1204 struct os_reltime now; 1205 os_get_reltime(&now); 1206 if (now.sec + reauth_delay <= 1207 wpa_s->current_ssid->disabled_until.sec) 1208 return; 1209 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds", 1210 reauth_delay); 1211 wpa_s->current_ssid->disabled_until.sec = 1212 now.sec + reauth_delay; 1213 } 1214} 1215 1216 1217void hs20_init(struct wpa_supplicant *wpa_s) 1218{ 1219 dl_list_init(&wpa_s->icon_head); 1220} 1221 1222 1223void hs20_deinit(struct wpa_supplicant *wpa_s) 1224{ 1225 eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL); 1226 hs20_free_osu_prov(wpa_s); 1227 if (wpa_s->icon_head.next) 1228 hs20_del_icon(wpa_s, NULL, NULL); 1229} 1230