wpa_supplicant/hs20_supplicant.c

   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         u8 osu_ssid2[SSID_MAX_LEN];
  53         u8 osu_ssid2_len;
  54         char server_uri[256];
  55         u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */
  56         char osu_nai[256];
  57         char osu_nai2[256];
  58         struct osu_lang_string friendly_name[OSU_MAX_ITEMS];
  59         size_t friendly_name_count;
  60         struct osu_lang_string serv_desc[OSU_MAX_ITEMS];
  61         size_t serv_desc_count;
  62         struct osu_icon icon[OSU_MAX_ITEMS];
  63         size_t icon_count;
  64 };
  65
  66
  67 void hs20_configure_frame_filters(struct wpa_supplicant *wpa_s)
  68 {
  69         struct wpa_bss *bss = wpa_s->current_bss;
  70         u8 *bssid = wpa_s->bssid;
  71         const u8 *ie;
  72         const u8 *ext_capa;
  73         u32 filter = 0;
  74
  75         if (!bss || !is_hs20_network(wpa_s, wpa_s->current_ssid, bss)) {
  76                 wpa_printf(MSG_DEBUG,
  77                            "Not configuring frame filtering - BSS " MACSTR
  78                            " is not a Hotspot 2.0 network", MAC2STR(bssid));
  79                 return;
  80         }
  81
  82         ie = wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE);
  83
  84         /* Check if DGAF disabled bit is zero (5th byte in the IE) */
  85         if (!ie || ie[1] < 5)
  86                 wpa_printf(MSG_DEBUG,
  87                            "Not configuring frame filtering - Can't extract DGAF bit");
  88         else if (!(ie[6] & HS20_DGAF_DISABLED))
  89                 filter |= WPA_DATA_FRAME_FILTER_FLAG_GTK;
  90
  91         ext_capa = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
  92         if (!ext_capa || ext_capa[1] < 2) {
  93                 wpa_printf(MSG_DEBUG,
  94                            "Not configuring frame filtering - Can't extract Proxy ARP bit");
  95                 return;
  96         }
  97
  98         /* Check if Proxy ARP is enabled (2nd byte in the IE) */
  99         if (ext_capa[3] & BIT(4))
 100                 filter |= WPA_DATA_FRAME_FILTER_FLAG_ARP |
 101                         WPA_DATA_FRAME_FILTER_FLAG_NA;
 102
 103         wpa_drv_configure_frame_filters(wpa_s, filter);
 104 }
 105
 106
 107 void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id)
 108 {
 109         u8 conf;
 110
 111         wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
 112         wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5);
 113         wpabuf_put_be24(buf, OUI_WFA);
 114         wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
 115         conf = HS20_VERSION;
 116         if (pps_mo_id >= 0)
 117                 conf |= HS20_PPS_MO_ID_PRESENT;
 118         wpabuf_put_u8(buf, conf);
 119         if (pps_mo_id >= 0)
 120                 wpabuf_put_le16(buf, pps_mo_id);
 121 }
 122
 123
 124 void wpas_hs20_add_roam_cons_sel(struct wpabuf *buf,
 125                                  const struct wpa_ssid *ssid)
 126 {
 127         if (!ssid->roaming_consortium_selection ||
 128             !ssid->roaming_consortium_selection_len)
 129                 return;
 130
 131         wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
 132         wpabuf_put_u8(buf, 4 + ssid->roaming_consortium_selection_len);
 133         wpabuf_put_be24(buf, OUI_WFA);
 134         wpabuf_put_u8(buf, HS20_ROAMING_CONS_SEL_OUI_TYPE);
 135         wpabuf_put_data(buf, ssid->roaming_consortium_selection,
 136                         ssid->roaming_consortium_selection_len);
 137 }
 138
 139
 140 int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
 141                     struct wpa_bss *bss)
 142 {
 143         if (!wpa_s->conf->hs20 || !ssid)
 144                 return 0;
 145
 146         if (ssid->parent_cred)
 147                 return 1;
 148
 149         if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE))
 150                 return 0;
 151
 152         /*
 153          * This may catch some non-Hotspot 2.0 cases, but it is safer to do that
 154          * than cause Hotspot 2.0 connections without indication element getting
 155          * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element.
 156          */
 157
 158         if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X))
 159                 return 0;
 160         if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP))
 161                 return 0;
 162         if (ssid->proto != WPA_PROTO_RSN)
 163                 return 0;
 164
 165         return 1;
 166 }
 167
 168
 169 int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
 170 {
 171         struct wpa_cred *cred;
 172
 173         if (ssid == NULL)
 174                 return 0;
 175
 176         if (ssid->update_identifier)
 177                 return ssid->update_identifier;
 178
 179         if (ssid->parent_cred == NULL)
 180                 return 0;
 181
 182         for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
 183                 if (ssid->parent_cred == cred)
 184                         return cred->update_identifier;
 185         }
 186
 187         return 0;
 188 }
 189
 190
 191 void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len,
 192                        struct wpabuf *buf)
 193 {
 194         u8 *len_pos;
 195
 196         if (buf == NULL)
 197                 return;
 198
 199         len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
 200         wpabuf_put_be24(buf, OUI_WFA);
 201         wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
 202         if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
 203                 wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
 204                 wpabuf_put_u8(buf, 0); /* Reserved */
 205                 if (payload)
 206                         wpabuf_put_data(buf, payload, payload_len);
 207         } else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) {
 208                 wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST);
 209                 wpabuf_put_u8(buf, 0); /* Reserved */
 210                 if (payload)
 211                         wpabuf_put_data(buf, payload, payload_len);
 212         } else {
 213                 u8 i;
 214                 wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
 215                 wpabuf_put_u8(buf, 0); /* Reserved */
 216                 for (i = 0; i < 32; i++) {
 217                         if (stypes & BIT(i))
 218                                 wpabuf_put_u8(buf, i);
 219                 }
 220         }
 221         gas_anqp_set_element_len(buf, len_pos);
 222
 223         gas_anqp_set_len(buf);
 224 }
 225
 226
 227 static struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
 228                                            size_t payload_len)
 229 {
 230         struct wpabuf *buf;
 231
 232         buf = gas_anqp_build_initial_req(0, 100 + payload_len);
 233         if (buf == NULL)
 234                 return NULL;
 235
 236         hs20_put_anqp_req(stypes, payload, payload_len, buf);
 237
 238         return buf;
 239 }
 240
 241
 242 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
 243                        const u8 *payload, size_t payload_len, int inmem)
 244 {
 245         struct wpabuf *buf;
 246         int ret = 0;
 247         int freq;
 248         struct wpa_bss *bss;
 249         int res;
 250         struct icon_entry *icon_entry;
 251
 252         bss = wpa_bss_get_bssid(wpa_s, dst);
 253         if (!bss) {
 254                 wpa_printf(MSG_WARNING,
 255                            "ANQP: Cannot send query to unknown BSS "
 256                            MACSTR, MAC2STR(dst));
 257                 return -1;
 258         }
 259
 260         wpa_bss_anqp_unshare_alloc(bss);
 261         freq = bss->freq;
 262
 263         wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
 264                    "subtypes 0x%x", MAC2STR(dst), stypes);
 265
 266         buf = hs20_build_anqp_req(stypes, payload, payload_len);
 267         if (buf == NULL)
 268                 return -1;
 269
 270         res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, anqp_resp_cb, wpa_s);
 271         if (res < 0) {
 272                 wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
 273                 wpabuf_free(buf);
 274                 return -1;
 275         } else
 276                 wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
 277                            "%u", res);
 278
 279         if (inmem) {
 280                 icon_entry = os_zalloc(sizeof(struct icon_entry));
 281                 if (!icon_entry)
 282                         return -1;
 283                 os_memcpy(icon_entry->bssid, dst, ETH_ALEN);
 284                 icon_entry->file_name = os_malloc(payload_len + 1);
 285                 if (!icon_entry->file_name) {
 286                         os_free(icon_entry);
 287                         return -1;
 288                 }
 289                 os_memcpy(icon_entry->file_name, payload, payload_len);
 290                 icon_entry->file_name[payload_len] = '\0';
 291                 icon_entry->dialog_token = res;
 292
 293                 dl_list_add(&wpa_s->icon_head, &icon_entry->list);
 294         }
 295
 296         return ret;
 297 }
 298
 299
 300 static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s,
 301                                           const u8 *bssid,
 302                                           const char *file_name)
 303 {
 304         struct icon_entry *icon;
 305
 306         dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
 307                 if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 &&
 308                     os_strcmp(icon->file_name, file_name) == 0 && icon->image)
 309                         return icon;
 310         }
 311
 312         return NULL;
 313 }
 314
 315
 316 int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
 317                   const char *file_name, size_t offset, size_t size,
 318                   char *reply, size_t buf_len)
 319 {
 320         struct icon_entry *icon;
 321         size_t out_size;
 322         unsigned char *b64;
 323         size_t b64_size;
 324         int reply_size;
 325
 326         wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)",
 327                    MAC2STR(bssid), file_name, (unsigned int) offset,
 328                    (unsigned int) size, (unsigned int) buf_len);
 329
 330         icon = hs20_find_icon(wpa_s, bssid, file_name);
 331         if (!icon || !icon->image || offset >= icon->image_len)
 332                 return -1;
 333         if (size > icon->image_len - offset)
 334                 size = icon->image_len - offset;
 335         out_size = buf_len - 3 /* max base64 padding */;
 336         if (size * 4 > out_size * 3)
 337                 size = out_size * 3 / 4;
 338         if (size == 0)
 339                 return -1;
 340
 341         b64 = base64_encode(&icon->image[offset], size, &b64_size);
 342         if (b64 && buf_len >= b64_size) {
 343                 os_memcpy(reply, b64, b64_size);
 344                 reply_size = b64_size;
 345         } else {
 346                 reply_size = -1;
 347         }
 348         os_free(b64);
 349         return reply_size;
 350 }
 351
 352
 353 static void hs20_free_icon_entry(struct icon_entry *icon)
 354 {
 355         wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR
 356                    " dialog_token=%u file_name=%s image_len=%u",
 357                    MAC2STR(icon->bssid), icon->dialog_token,
 358                    icon->file_name ? icon->file_name : "N/A",
 359                    (unsigned int) icon->image_len);
 360         os_free(icon->file_name);
 361         os_free(icon->image);
 362         os_free(icon);
 363 }
 364
 365
 366 int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
 367                   const char *file_name)
 368 {
 369         struct icon_entry *icon, *tmp;
 370         int count = 0;
 371
 372         if (!bssid)
 373                 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons");
 374         else if (!file_name)
 375                 wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for "
 376                            MACSTR, MAC2STR(bssid));
 377         else
 378                 wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for "
 379                            MACSTR " file name %s", MAC2STR(bssid), file_name);
 380
 381         dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
 382                               list) {
 383                 if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) &&
 384                     (!file_name ||
 385                      os_strcmp(icon->file_name, file_name) == 0)) {
 386                         dl_list_del(&icon->list);
 387                         hs20_free_icon_entry(icon);
 388                         count++;
 389                 }
 390         }
 391         return count == 0 ? -1 : 0;
 392 }
 393
 394
 395 static void hs20_set_osu_access_permission(const char *osu_dir,
 396                                            const char *fname)
 397 {
 398         struct stat statbuf;
 399
 400         /* Get OSU directory information */
 401         if (stat(osu_dir, &statbuf) < 0) {
 402                 wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s",
 403                            osu_dir);
 404                 return;
 405         }
 406
 407         if (chmod(fname, statbuf.st_mode) < 0) {
 408                 wpa_printf(MSG_WARNING,
 409                            "Cannot change the permissions for %s", fname);
 410                 return;
 411         }
 412
 413         if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) {
 414                 wpa_printf(MSG_WARNING, "Cannot change the ownership for %s",
 415                            fname);
 416         }
 417 }
 418
 419
 420 static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s,
 421                                         struct icon_entry *new_icon)
 422 {
 423         struct icon_entry *icon, *tmp;
 424
 425         dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
 426                               list) {
 427                 if (icon == new_icon)
 428                         continue;
 429                 if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 &&
 430                     os_strcmp(icon->file_name, new_icon->file_name) == 0) {
 431                         dl_list_del(&icon->list);
 432                         hs20_free_icon_entry(icon);
 433                 }
 434         }
 435 }
 436
 437
 438 static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
 439                                          const u8 *sa, const u8 *pos,
 440                                          size_t slen, u8 dialog_token)
 441 {
 442         char fname[256];
 443         int png;
 444         FILE *f;
 445         u16 data_len;
 446         struct icon_entry *icon;
 447
 448         dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
 449                 if (icon->dialog_token == dialog_token && !icon->image &&
 450                     os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) {
 451                         icon->image = os_memdup(pos, slen);
 452                         if (!icon->image)
 453                                 return -1;
 454                         icon->image_len = slen;
 455                         hs20_remove_duplicate_icons(wpa_s, icon);
 456                         wpa_msg(wpa_s, MSG_INFO,
 457                                 RX_HS20_ICON MACSTR " %s %u",
 458                                 MAC2STR(sa), icon->file_name,
 459                                 (unsigned int) icon->image_len);
 460                         return 0;
 461                 }
 462         }
 463
 464         wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR " Icon Binary File",
 465                 MAC2STR(sa));
 466
 467         if (slen < 4) {
 468                 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
 469                         "value from " MACSTR, MAC2STR(sa));
 470                 return -1;
 471         }
 472
 473         wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos);
 474         if (*pos != 0)
 475                 return -1;
 476         pos++;
 477         slen--;
 478
 479         if ((size_t) 1 + pos[0] > slen) {
 480                 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
 481                         "value from " MACSTR, MAC2STR(sa));
 482                 return -1;
 483         }
 484         wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]);
 485         png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0;
 486         slen -= 1 + pos[0];
 487         pos += 1 + pos[0];
 488
 489         if (slen < 2) {
 490                 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
 491                         "value from " MACSTR, MAC2STR(sa));
 492                 return -1;
 493         }
 494         data_len = WPA_GET_LE16(pos);
 495         pos += 2;
 496         slen -= 2;
 497
 498         if (data_len > slen) {
 499                 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
 500                         "value from " MACSTR, MAC2STR(sa));
 501                 return -1;
 502         }
 503
 504         wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len);
 505         if (wpa_s->conf->osu_dir == NULL)
 506                 return -1;
 507
 508         wpa_s->osu_icon_id++;
 509         if (wpa_s->osu_icon_id == 0)
 510                 wpa_s->osu_icon_id++;
 511         snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s",
 512                  wpa_s->conf->osu_dir, wpa_s->osu_icon_id,
 513                  png ? "png" : "icon");
 514         f = fopen(fname, "wb");
 515         if (f == NULL)
 516                 return -1;
 517
 518         hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
 519
 520         if (fwrite(pos, slen, 1, f) != 1) {
 521                 fclose(f);
 522                 unlink(fname);
 523                 return -1;
 524         }
 525         fclose(f);
 526
 527         wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP_ICON "%s", fname);
 528         return 0;
 529 }
 530
 531
 532 static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx)
 533 {
 534         struct wpa_supplicant *wpa_s = eloop_ctx;
 535         if (wpa_s->fetch_osu_icon_in_progress)
 536                 hs20_next_osu_icon(wpa_s);
 537 }
 538
 539
 540 static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
 541 {
 542         size_t i, j;
 543         struct os_reltime now, tmp;
 544         int dur;
 545
 546         os_get_reltime(&now);
 547         os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
 548         dur = tmp.sec * 1000 + tmp.usec / 1000;
 549         wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
 550                    dur, res);
 551
 552         for (i = 0; i < wpa_s->osu_prov_count; i++) {
 553                 struct osu_provider *osu = &wpa_s->osu_prov[i];
 554                 for (j = 0; j < osu->icon_count; j++) {
 555                         struct osu_icon *icon = &osu->icon[j];
 556                         if (icon->id || icon->failed)
 557                                 continue;
 558                         if (res < 0)
 559                                 icon->failed = 1;
 560                         else
 561                                 icon->id = wpa_s->osu_icon_id;
 562                         return;
 563                 }
 564         }
 565 }
 566
 567
 568 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
 569                                   struct wpa_bss *bss, const u8 *sa,
 570                                   const u8 *data, size_t slen, u8 dialog_token)
 571 {
 572         const u8 *pos = data;
 573         u8 subtype;
 574         struct wpa_bss_anqp *anqp = NULL;
 575         int ret;
 576
 577         if (slen < 2)
 578                 return;
 579
 580         if (bss)
 581                 anqp = bss->anqp;
 582
 583         subtype = *pos++;
 584         slen--;
 585
 586         pos++; /* Reserved */
 587         slen--;
 588
 589         switch (subtype) {
 590         case HS20_STYPE_CAPABILITY_LIST:
 591                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 592                         " HS Capability List", MAC2STR(sa));
 593                 wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
 594                 if (anqp) {
 595                         wpabuf_free(anqp->hs20_capability_list);
 596                         anqp->hs20_capability_list =
 597                                 wpabuf_alloc_copy(pos, slen);
 598                 }
 599                 break;
 600         case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
 601                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 602                         " Operator Friendly Name", MAC2STR(sa));
 603                 wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
 604                 if (anqp) {
 605                         wpabuf_free(anqp->hs20_operator_friendly_name);
 606                         anqp->hs20_operator_friendly_name =
 607                                 wpabuf_alloc_copy(pos, slen);
 608                 }
 609                 break;
 610         case HS20_STYPE_WAN_METRICS:
 611                 wpa_hexdump(MSG_DEBUG, "WAN Metrics", pos, slen);
 612                 if (slen < 13) {
 613                         wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short WAN "
 614                                 "Metrics value from " MACSTR, MAC2STR(sa));
 615                         break;
 616                 }
 617                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 618                         " WAN Metrics %02x:%u:%u:%u:%u:%u", MAC2STR(sa),
 619                         pos[0], WPA_GET_LE32(pos + 1), WPA_GET_LE32(pos + 5),
 620                         pos[9], pos[10], WPA_GET_LE16(pos + 11));
 621                 if (anqp) {
 622                         wpabuf_free(anqp->hs20_wan_metrics);
 623                         anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
 624                 }
 625                 break;
 626         case HS20_STYPE_CONNECTION_CAPABILITY:
 627                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 628                         " Connection Capability", MAC2STR(sa));
 629                 wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
 630                 if (anqp) {
 631                         wpabuf_free(anqp->hs20_connection_capability);
 632                         anqp->hs20_connection_capability =
 633                                 wpabuf_alloc_copy(pos, slen);
 634                 }
 635                 break;
 636         case HS20_STYPE_OPERATING_CLASS:
 637                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 638                         " Operating Class", MAC2STR(sa));
 639                 wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
 640                 if (anqp) {
 641                         wpabuf_free(anqp->hs20_operating_class);
 642                         anqp->hs20_operating_class =
 643                                 wpabuf_alloc_copy(pos, slen);
 644                 }
 645                 break;
 646         case HS20_STYPE_OSU_PROVIDERS_LIST:
 647                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 648                         " OSU Providers list", MAC2STR(sa));
 649                 wpa_s->num_prov_found++;
 650                 if (anqp) {
 651                         wpabuf_free(anqp->hs20_osu_providers_list);
 652                         anqp->hs20_osu_providers_list =
 653                                 wpabuf_alloc_copy(pos, slen);
 654                 }
 655                 break;
 656         case HS20_STYPE_ICON_BINARY_FILE:
 657                 ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen,
 658                                                     dialog_token);
 659                 if (wpa_s->fetch_osu_icon_in_progress) {
 660                         hs20_osu_icon_fetch_result(wpa_s, ret);
 661                         eloop_cancel_timeout(hs20_continue_icon_fetch,
 662                                              wpa_s, NULL);
 663                         eloop_register_timeout(0, 0, hs20_continue_icon_fetch,
 664                                                wpa_s, NULL);
 665                 }
 666                 break;
 667         case HS20_STYPE_OPERATOR_ICON_METADATA:
 668                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 669                         " Operator Icon Metadata", MAC2STR(sa));
 670                 wpa_hexdump(MSG_DEBUG, "Operator Icon Metadata", pos, slen);
 671                 if (anqp) {
 672                         wpabuf_free(anqp->hs20_operator_icon_metadata);
 673                         anqp->hs20_operator_icon_metadata =
 674                                 wpabuf_alloc_copy(pos, slen);
 675                 }
 676                 break;
 677         case HS20_STYPE_OSU_PROVIDERS_NAI_LIST:
 678                 wpa_msg(wpa_s, MSG_INFO, RX_HS20_ANQP MACSTR
 679                         " OSU Providers NAI List", MAC2STR(sa));
 680                 if (anqp) {
 681                         wpabuf_free(anqp->hs20_osu_providers_nai_list);
 682                         anqp->hs20_osu_providers_nai_list =
 683                                 wpabuf_alloc_copy(pos, slen);
 684                 }
 685                 break;
 686         default:
 687                 wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
 688                 break;
 689         }
 690 }
 691
 692
 693 void hs20_notify_parse_done(struct wpa_supplicant *wpa_s)
 694 {
 695         if (!wpa_s->fetch_osu_icon_in_progress)
 696                 return;
 697         if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL))
 698                 return;
 699         /*
 700          * We are going through icon fetch, but no icon response was received.
 701          * Assume this means the current AP could not provide an answer to avoid
 702          * getting stuck in fetch iteration.
 703          */
 704         hs20_icon_fetch_failed(wpa_s);
 705 }
 706
 707
 708 static void hs20_free_osu_prov_entry(struct osu_provider *prov)
 709 {
 710 }
 711
 712
 713 void hs20_free_osu_prov(struct wpa_supplicant *wpa_s)
 714 {
 715         size_t i;
 716         for (i = 0; i < wpa_s->osu_prov_count; i++)
 717                 hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]);
 718         os_free(wpa_s->osu_prov);
 719         wpa_s->osu_prov = NULL;
 720         wpa_s->osu_prov_count = 0;
 721 }
 722
 723
 724 static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
 725 {
 726         char fname[256];
 727         FILE *f;
 728         size_t i, j;
 729
 730         wpa_s->fetch_osu_info = 0;
 731         wpa_s->fetch_osu_icon_in_progress = 0;
 732
 733         if (wpa_s->conf->osu_dir == NULL) {
 734                 hs20_free_osu_prov(wpa_s);
 735                 wpa_s->fetch_anqp_in_progress = 0;
 736                 return;
 737         }
 738
 739         snprintf(fname, sizeof(fname), "%s/osu-providers.txt",
 740                  wpa_s->conf->osu_dir);
 741         f = fopen(fname, "w");
 742         if (f == NULL) {
 743                 wpa_msg(wpa_s, MSG_INFO,
 744                         "Could not write OSU provider information");
 745                 hs20_free_osu_prov(wpa_s);
 746                 wpa_s->fetch_anqp_in_progress = 0;
 747                 return;
 748         }
 749
 750         hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
 751
 752         for (i = 0; i < wpa_s->osu_prov_count; i++) {
 753                 struct osu_provider *osu = &wpa_s->osu_prov[i];
 754                 if (i > 0)
 755                         fprintf(f, "\n");
 756                 fprintf(f, "OSU-PROVIDER " MACSTR "\n"
 757                         "uri=%s\n"
 758                         "methods=%08x\n",
 759                         MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods);
 760                 if (osu->osu_ssid_len) {
 761                         fprintf(f, "osu_ssid=%s\n",
 762                                 wpa_ssid_txt(osu->osu_ssid,
 763                                              osu->osu_ssid_len));
 764                 }
 765                 if (osu->osu_ssid2_len) {
 766                         fprintf(f, "osu_ssid2=%s\n",
 767                                 wpa_ssid_txt(osu->osu_ssid2,
 768                                              osu->osu_ssid2_len));
 769                 }
 770                 if (osu->osu_nai[0])
 771                         fprintf(f, "osu_nai=%s\n", osu->osu_nai);
 772                 if (osu->osu_nai2[0])
 773                         fprintf(f, "osu_nai2=%s\n", osu->osu_nai2);
 774                 for (j = 0; j < osu->friendly_name_count; j++) {
 775                         fprintf(f, "friendly_name=%s:%s\n",
 776                                 osu->friendly_name[j].lang,
 777                                 osu->friendly_name[j].text);
 778                 }
 779                 for (j = 0; j < osu->serv_desc_count; j++) {
 780                         fprintf(f, "desc=%s:%s\n",
 781                                 osu->serv_desc[j].lang,
 782                                 osu->serv_desc[j].text);
 783                 }
 784                 for (j = 0; j < osu->icon_count; j++) {
 785                         struct osu_icon *icon = &osu->icon[j];
 786                         if (icon->failed)
 787                                 continue; /* could not fetch icon */
 788                         fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n",
 789                                 icon->id, icon->width, icon->height, icon->lang,
 790                                 icon->icon_type, icon->filename);
 791                 }
 792         }
 793         fclose(f);
 794         hs20_free_osu_prov(wpa_s);
 795
 796         wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed");
 797         wpa_s->fetch_anqp_in_progress = 0;
 798 }
 799
 800
 801 void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
 802 {
 803         size_t i, j;
 804
 805         wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");
 806
 807         for (i = 0; i < wpa_s->osu_prov_count; i++) {
 808                 struct osu_provider *osu = &wpa_s->osu_prov[i];
 809                 for (j = 0; j < osu->icon_count; j++) {
 810                         struct osu_icon *icon = &osu->icon[j];
 811                         if (icon->id || icon->failed)
 812                                 continue;
 813
 814                         wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
 815                                    "from " MACSTR, icon->filename,
 816                                    MAC2STR(osu->bssid));
 817                         os_get_reltime(&wpa_s->osu_icon_fetch_start);
 818                         if (hs20_anqp_send_req(wpa_s, osu->bssid,
 819                                                BIT(HS20_STYPE_ICON_REQUEST),
 820                                                (u8 *) icon->filename,
 821                                                os_strlen(icon->filename),
 822                                                0) < 0) {
 823                                 icon->failed = 1;
 824                                 continue;
 825                         }
 826                         return;
 827                 }
 828         }
 829
 830         wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
 831         hs20_osu_fetch_done(wpa_s);
 832 }
 833
 834
 835 static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
 836                               const u8 *osu_ssid, u8 osu_ssid_len,
 837                               const u8 *osu_ssid2, u8 osu_ssid2_len,
 838                               const u8 *pos, size_t len)
 839 {
 840         struct osu_provider *prov;
 841         const u8 *end = pos + len;
 842         u16 len2;
 843         const u8 *pos2;
 844         u8 uri_len, osu_method_len, osu_nai_len;
 845
 846         wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len);
 847         prov = os_realloc_array(wpa_s->osu_prov,
 848                                 wpa_s->osu_prov_count + 1,
 849                                 sizeof(*prov));
 850         if (prov == NULL)
 851                 return;
 852         wpa_s->osu_prov = prov;
 853         prov = &prov[wpa_s->osu_prov_count];
 854         os_memset(prov, 0, sizeof(*prov));
 855
 856         os_memcpy(prov->bssid, bss->bssid, ETH_ALEN);
 857         os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len);
 858         prov->osu_ssid_len = osu_ssid_len;
 859         if (osu_ssid2)
 860                 os_memcpy(prov->osu_ssid2, osu_ssid2, osu_ssid2_len);
 861         prov->osu_ssid2_len = osu_ssid2_len;
 862
 863         /* OSU Friendly Name Length */
 864         if (end - pos < 2) {
 865                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
 866                            "Friendly Name Length");
 867                 return;
 868         }
 869         len2 = WPA_GET_LE16(pos);
 870         pos += 2;
 871         if (len2 > end - pos) {
 872                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
 873                            "Friendly Name Duples");
 874                 return;
 875         }
 876         pos2 = pos;
 877         pos += len2;
 878
 879         /* OSU Friendly Name Duples */
 880         while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) {
 881                 struct osu_lang_string *f;
 882                 if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) {
 883                         wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name");
 884                         break;
 885                 }
 886                 f = &prov->friendly_name[prov->friendly_name_count++];
 887                 os_memcpy(f->lang, pos2 + 1, 3);
 888                 os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3);
 889                 pos2 += 1 + pos2[0];
 890         }
 891
 892         /* OSU Server URI */
 893         if (end - pos < 1) {
 894                 wpa_printf(MSG_DEBUG,
 895                            "HS 2.0: Not enough room for OSU Server URI length");
 896                 return;
 897         }
 898         uri_len = *pos++;
 899         if (uri_len > end - pos) {
 900                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server "
 901                            "URI");
 902                 return;
 903         }
 904         os_memcpy(prov->server_uri, pos, uri_len);
 905         pos += uri_len;
 906
 907         /* OSU Method list */
 908         if (end - pos < 1) {
 909                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
 910                            "list length");
 911                 return;
 912         }
 913         osu_method_len = pos[0];
 914         if (osu_method_len > end - pos - 1) {
 915                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
 916                            "list");
 917                 return;
 918         }
 919         pos2 = pos + 1;
 920         pos += 1 + osu_method_len;
 921         while (pos2 < pos) {
 922                 if (*pos2 < 32)
 923                         prov->osu_methods |= BIT(*pos2);
 924                 pos2++;
 925         }
 926
 927         /* Icons Available Length */
 928         if (end - pos < 2) {
 929                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
 930                            "Available Length");
 931                 return;
 932         }
 933         len2 = WPA_GET_LE16(pos);
 934         pos += 2;
 935         if (len2 > end - pos) {
 936                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
 937                            "Available");
 938                 return;
 939         }
 940         pos2 = pos;
 941         pos += len2;
 942
 943         /* Icons Available */
 944         while (pos2 < pos) {
 945                 struct osu_icon *icon = &prov->icon[prov->icon_count];
 946                 u8 flen;
 947
 948                 if (2 + 2 + 3 + 1 + 1 > pos - pos2) {
 949                         wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata");
 950                         break;
 951                 }
 952
 953                 icon->width = WPA_GET_LE16(pos2);
 954                 pos2 += 2;
 955                 icon->height = WPA_GET_LE16(pos2);
 956                 pos2 += 2;
 957                 os_memcpy(icon->lang, pos2, 3);
 958                 pos2 += 3;
 959
 960                 flen = *pos2++;
 961                 if (flen > pos - pos2) {
 962                         wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type");
 963                         break;
 964                 }
 965                 os_memcpy(icon->icon_type, pos2, flen);
 966                 pos2 += flen;
 967
 968                 if (pos - pos2 < 1) {
 969                         wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
 970                                    "Filename length");
 971                         break;
 972                 }
 973                 flen = *pos2++;
 974                 if (flen > pos - pos2) {
 975                         wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
 976                                    "Filename");
 977                         break;
 978                 }
 979                 os_memcpy(icon->filename, pos2, flen);
 980                 pos2 += flen;
 981
 982                 prov->icon_count++;
 983         }
 984
 985         /* OSU_NAI */
 986         if (end - pos < 1) {
 987                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
 988                 return;
 989         }
 990         osu_nai_len = *pos++;
 991         if (osu_nai_len > end - pos) {
 992                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
 993                 return;
 994         }
 995         os_memcpy(prov->osu_nai, pos, osu_nai_len);
 996         pos += osu_nai_len;
 997
 998         /* OSU Service Description Length */
 999         if (end - pos < 2) {
1000                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
1001                            "Service Description Length");
1002                 return;
1003         }
1004         len2 = WPA_GET_LE16(pos);
1005         pos += 2;
1006         if (len2 > end - pos) {
1007                 wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
1008                            "Service Description Duples");
1009                 return;
1010         }
1011         pos2 = pos;
1012         pos += len2;
1013
1014         /* OSU Service Description Duples */
1015         while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) {
1016                 struct osu_lang_string *f;
1017                 u8 descr_len;
1018
1019                 descr_len = *pos2++;
1020                 if (descr_len > pos - pos2 || descr_len < 3) {
1021                         wpa_printf(MSG_DEBUG, "Invalid OSU Service "
1022                                    "Description");
1023                         break;
1024                 }
1025                 f = &prov->serv_desc[prov->serv_desc_count++];
1026                 os_memcpy(f->lang, pos2, 3);
1027                 os_memcpy(f->text, pos2 + 3, descr_len - 3);
1028                 pos2 += descr_len;
1029         }
1030
1031         wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR,
1032                    MAC2STR(bss->bssid));
1033         wpa_s->osu_prov_count++;
1034 }
1035
1036
1037 void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s)
1038 {
1039         struct wpa_bss *bss;
1040         struct wpabuf *prov_anqp;
1041         const u8 *pos, *end;
1042         u16 len;
1043         const u8 *osu_ssid, *osu_ssid2;
1044         u8 osu_ssid_len, osu_ssid2_len;
1045         u8 num_providers;
1046
1047         hs20_free_osu_prov(wpa_s);
1048
1049         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1050                 struct wpa_ie_data data;
1051                 const u8 *ie;
1052
1053                 if (bss->anqp == NULL)
1054                         continue;
1055                 prov_anqp = bss->anqp->hs20_osu_providers_list;
1056                 if (prov_anqp == NULL)
1057                         continue;
1058                 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1059                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &data) == 0 &&
1060                     (data.key_mgmt & WPA_KEY_MGMT_OSEN)) {
1061                         osu_ssid2 = bss->ssid;
1062                         osu_ssid2_len = bss->ssid_len;
1063                 } else {
1064                         osu_ssid2 = NULL;
1065                         osu_ssid2_len = 0;
1066                 }
1067                 wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from "
1068                            MACSTR, MAC2STR(bss->bssid));
1069                 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list",
1070                                 prov_anqp);
1071                 pos = wpabuf_head(prov_anqp);
1072                 end = pos + wpabuf_len(prov_anqp);
1073
1074                 /* OSU SSID */
1075                 if (end - pos < 1)
1076                         continue;
1077                 if (1 + pos[0] > end - pos) {
1078                         wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
1079                                    "OSU SSID");
1080                         continue;
1081                 }
1082                 osu_ssid_len = *pos++;
1083                 if (osu_ssid_len > SSID_MAX_LEN) {
1084                         wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID "
1085                                    "Length %u", osu_ssid_len);
1086                         continue;
1087                 }
1088                 osu_ssid = pos;
1089                 pos += osu_ssid_len;
1090
1091                 if (end - pos < 1) {
1092                         wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
1093                                    "Number of OSU Providers");
1094                         continue;
1095                 }
1096                 num_providers = *pos++;
1097                 wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u",
1098                            num_providers);
1099
1100                 /* OSU Providers */
1101                 while (end - pos > 2 && num_providers > 0) {
1102                         num_providers--;
1103                         len = WPA_GET_LE16(pos);
1104                         pos += 2;
1105                         if (len > (unsigned int) (end - pos))
1106                                 break;
1107                         hs20_osu_add_prov(wpa_s, bss, osu_ssid,
1108                                           osu_ssid_len, osu_ssid2,
1109                                           osu_ssid2_len, pos, len);
1110                         pos += len;
1111                 }
1112
1113                 if (pos != end) {
1114                         wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of "
1115                                    "extra data after OSU Providers",
1116                                    (int) (end - pos));
1117                 }
1118
1119                 prov_anqp = bss->anqp->hs20_osu_providers_nai_list;
1120                 if (!prov_anqp)
1121                         continue;
1122                 wpa_printf(MSG_DEBUG,
1123                            "HS 2.0: Parsing OSU Providers NAI List from "
1124                            MACSTR, MAC2STR(bss->bssid));
1125                 wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers NAI List",
1126                                 prov_anqp);
1127                 pos = wpabuf_head(prov_anqp);
1128                 end = pos + wpabuf_len(prov_anqp);
1129                 num_providers = 0;
1130                 while (end - pos > 0) {
1131                         len = *pos++;
1132                         if (end - pos < len) {
1133                                 wpa_printf(MSG_DEBUG,
1134                                            "HS 2.0: Not enough room for OSU_NAI");
1135                                 break;
1136                         }
1137                         if (num_providers >= wpa_s->osu_prov_count) {
1138                                 wpa_printf(MSG_DEBUG,
1139                                            "HS 2.0: Ignore unexpected OSU Provider NAI List entries");
1140                                 break;
1141                         }
1142                         os_memcpy(wpa_s->osu_prov[num_providers].osu_nai2,
1143                                   pos, len);
1144                         pos += len;
1145                         num_providers++;
1146                 }
1147         }
1148
1149         wpa_s->fetch_osu_icon_in_progress = 1;
1150         hs20_next_osu_icon(wpa_s);
1151 }
1152
1153
1154 static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s,
1155                                       struct wpa_scan_results *scan_res)
1156 {
1157         wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed");
1158         if (!wpa_s->fetch_osu_waiting_scan) {
1159                 wpa_printf(MSG_DEBUG, "OSU fetch have been canceled");
1160                 return;
1161         }
1162         wpa_s->network_select = 0;
1163         wpa_s->fetch_all_anqp = 1;
1164         wpa_s->fetch_osu_info = 1;
1165         wpa_s->fetch_osu_icon_in_progress = 0;
1166
1167         interworking_start_fetch_anqp(wpa_s);
1168 }
1169
1170
1171 int hs20_fetch_osu(struct wpa_supplicant *wpa_s, int skip_scan)
1172 {
1173         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
1174                 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1175                            "interface disabled");
1176                 return -1;
1177         }
1178
1179         if (wpa_s->scanning) {
1180                 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1181                            "scanning");
1182                 return -1;
1183         }
1184
1185         if (wpa_s->conf->osu_dir == NULL) {
1186                 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1187                            "osu_dir not configured");
1188                 return -1;
1189         }
1190
1191         if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) {
1192                 wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
1193                            "fetch in progress (%d, %d)",
1194                            wpa_s->fetch_anqp_in_progress,
1195                            wpa_s->network_select);
1196                 return -1;
1197         }
1198
1199         wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch");
1200         wpa_s->num_osu_scans = 0;
1201         wpa_s->num_prov_found = 0;
1202         if (skip_scan) {
1203                 wpa_s->network_select = 0;
1204                 wpa_s->fetch_all_anqp = 1;
1205                 wpa_s->fetch_osu_info = 1;
1206                 wpa_s->fetch_osu_icon_in_progress = 0;
1207
1208                 interworking_start_fetch_anqp(wpa_s);
1209         } else {
1210                 hs20_start_osu_scan(wpa_s);
1211         }
1212
1213         return 0;
1214 }
1215
1216
1217 void hs20_start_osu_scan(struct wpa_supplicant *wpa_s)
1218 {
1219         wpa_s->fetch_osu_waiting_scan = 1;
1220         wpa_s->num_osu_scans++;
1221         wpa_s->scan_req = MANUAL_SCAN_REQ;
1222         wpa_s->scan_res_handler = hs20_osu_scan_res_handler;
1223         wpa_supplicant_req_scan(wpa_s, 0, 0);
1224 }
1225
1226
1227 void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s)
1228 {
1229         wpa_printf(MSG_DEBUG, "Cancel OSU fetch");
1230         interworking_stop_fetch_anqp(wpa_s);
1231         wpa_s->fetch_osu_waiting_scan = 0;
1232         wpa_s->network_select = 0;
1233         wpa_s->fetch_osu_info = 0;
1234         wpa_s->fetch_osu_icon_in_progress = 0;
1235 }
1236
1237
1238 void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s)
1239 {
1240         hs20_osu_icon_fetch_result(wpa_s, -1);
1241         eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1242         eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL);
1243 }
1244
1245
1246 void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s,
1247                                       const char *url, u8 osu_method)
1248 {
1249         if (url)
1250                 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s",
1251                         osu_method, url);
1252         else
1253                 wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION);
1254 }
1255
1256
1257 void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code,
1258                                     u16 reauth_delay, const char *url)
1259 {
1260         if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
1261                 wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled");
1262                 return;
1263         }
1264
1265         wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s",
1266                 code, reauth_delay, url);
1267
1268         if (code == HS20_DEAUTH_REASON_CODE_BSS) {
1269                 wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist");
1270                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
1271                 /* TODO: For now, disable full ESS since some drivers may not
1272                  * support disabling per BSS. */
1273                 if (wpa_s->current_ssid) {
1274                         struct os_reltime now;
1275                         os_get_reltime(&now);
1276                         if (now.sec + reauth_delay <=
1277                             wpa_s->current_ssid->disabled_until.sec)
1278                                 return;
1279                         wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)",
1280                                    reauth_delay);
1281                         wpa_s->current_ssid->disabled_until.sec =
1282                                 now.sec + reauth_delay;
1283                 }
1284         }
1285
1286         if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) {
1287                 struct os_reltime now;
1288                 os_get_reltime(&now);
1289                 if (now.sec + reauth_delay <=
1290                     wpa_s->current_ssid->disabled_until.sec)
1291                         return;
1292                 wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds",
1293                            reauth_delay);
1294                 wpa_s->current_ssid->disabled_until.sec =
1295                         now.sec + reauth_delay;
1296         }
1297 }
1298
1299
1300 void hs20_rx_t_c_acceptance(struct wpa_supplicant *wpa_s, const char *url)
1301 {
1302         if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
1303                 wpa_printf(MSG_DEBUG,
1304                            "HS 2.0: Ignore Terms and Conditions Acceptance since PMF was not enabled");
1305                 return;
1306         }
1307
1308         wpa_msg(wpa_s, MSG_INFO, HS20_T_C_ACCEPTANCE "%s", url);
1309 }
1310
1311
1312 void hs20_init(struct wpa_supplicant *wpa_s)
1313 {
1314         dl_list_init(&wpa_s->icon_head);
1315 }
1316
1317
1318 void hs20_deinit(struct wpa_supplicant *wpa_s)
1319 {
1320         eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
1321         hs20_free_osu_prov(wpa_s);
1322         if (wpa_s->icon_head.next)
1323                 hs20_del_icon(wpa_s, NULL, NULL);
1324 }