vcs.maemo.org Git - wpasupplicant/blob - hostapd/wpa_ft.c

   1 /*
   2  * hostapd - IEEE 802.11r - Fast BSS Transition
   3  * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "config.h"
  19 #include "wpa.h"
  20 #include "aes_wrap.h"
  21 #include "ieee802_11.h"
  22 #include "wme.h"
  23 #include "defs.h"
  24 #include "wpa_auth_i.h"
  25 #include "wpa_auth_ie.h"
  26
  27
  28 #ifdef CONFIG_IEEE80211R
  29
  30 struct wpa_ft_ies {
  31         const u8 *mdie;
  32         size_t mdie_len;
  33         const u8 *ftie;
  34         size_t ftie_len;
  35         const u8 *r1kh_id;
  36         const u8 *gtk;
  37         size_t gtk_len;
  38         const u8 *r0kh_id;
  39         size_t r0kh_id_len;
  40         const u8 *rsn;
  41         size_t rsn_len;
  42         const u8 *rsn_pmkid;
  43         const u8 *ric;
  44         size_t ric_len;
  45 };
  46
  47
  48 static int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
  49                             struct wpa_ft_ies *parse);
  50
  51
  52 static int wpa_ft_rrb_send(struct wpa_authenticator *wpa_auth, const u8 *dst,
  53                            const u8 *data, size_t data_len)
  54 {
  55         if (wpa_auth->cb.send_ether == NULL)
  56                 return -1;
  57         return wpa_auth->cb.send_ether(wpa_auth->cb.ctx, dst, ETH_P_RRB,
  58                                        data, data_len);
  59 }
  60
  61
  62 static int wpa_ft_action_send(struct wpa_authenticator *wpa_auth,
  63                               const u8 *dst, const u8 *data, size_t data_len)
  64 {
  65         if (wpa_auth->cb.send_ft_action == NULL)
  66                 return -1;
  67         return wpa_auth->cb.send_ft_action(wpa_auth->cb.ctx, dst,
  68                                            data, data_len);
  69 }
  70
  71
  72 static struct wpa_state_machine *
  73 wpa_ft_add_sta(struct wpa_authenticator *wpa_auth, const u8 *sta_addr)
  74 {
  75         if (wpa_auth->cb.add_sta == NULL)
  76                 return NULL;
  77         return wpa_auth->cb.add_sta(wpa_auth->cb.ctx, sta_addr);
  78 }
  79
  80
  81 int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len)
  82 {
  83         u8 *pos = buf;
  84         u8 capab;
  85         if (len < 2 + sizeof(struct rsn_mdie))
  86                 return -1;
  87
  88         *pos++ = WLAN_EID_MOBILITY_DOMAIN;
  89         *pos++ = MOBILITY_DOMAIN_ID_LEN + 1;
  90         os_memcpy(pos, conf->mobility_domain, MOBILITY_DOMAIN_ID_LEN);
  91         pos += MOBILITY_DOMAIN_ID_LEN;
  92         capab = RSN_FT_CAPAB_FT_OVER_DS;
  93         *pos++ = capab;
  94
  95         return pos - buf;
  96 }
  97
  98
  99 static int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id,
 100                           size_t r0kh_id_len,
 101                           const u8 *anonce, const u8 *snonce,
 102                           u8 *buf, size_t len, const u8 *subelem,
 103                           size_t subelem_len)
 104 {
 105         u8 *pos = buf, *ielen;
 106         struct rsn_ftie *hdr;
 107
 108         if (len < 2 + sizeof(*hdr) + 2 + FT_R1KH_ID_LEN + 2 + r0kh_id_len +
 109             subelem_len)
 110                 return -1;
 111
 112         *pos++ = WLAN_EID_FAST_BSS_TRANSITION;
 113         ielen = pos++;
 114
 115         hdr = (struct rsn_ftie *) pos;
 116         os_memset(hdr, 0, sizeof(*hdr));
 117         pos += sizeof(*hdr);
 118         WPA_PUT_LE16(hdr->mic_control, 0);
 119         if (anonce)
 120                 os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN);
 121         if (snonce)
 122                 os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN);
 123
 124         /* Optional Parameters */
 125         *pos++ = FTIE_SUBELEM_R1KH_ID;
 126         *pos++ = FT_R1KH_ID_LEN;
 127         os_memcpy(pos, conf->r1_key_holder, FT_R1KH_ID_LEN);
 128         pos += FT_R1KH_ID_LEN;
 129
 130         if (r0kh_id) {
 131                 *pos++ = FTIE_SUBELEM_R0KH_ID;
 132                 *pos++ = r0kh_id_len;
 133                 os_memcpy(pos, r0kh_id, r0kh_id_len);
 134                 pos += r0kh_id_len;
 135         }
 136
 137         if (subelem) {
 138                 os_memcpy(pos, subelem, subelem_len);
 139                 pos += subelem_len;
 140         }
 141
 142         *ielen = pos - buf - 2;
 143
 144         return pos - buf;
 145 }
 146
 147
 148 struct wpa_ft_pmk_r0_sa {
 149         struct wpa_ft_pmk_r0_sa *next;
 150         u8 pmk_r0[PMK_LEN];
 151         u8 pmk_r0_name[WPA_PMK_NAME_LEN];
 152         u8 spa[ETH_ALEN];
 153         /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */
 154         int pmk_r1_pushed;
 155 };
 156
 157 struct wpa_ft_pmk_r1_sa {
 158         struct wpa_ft_pmk_r1_sa *next;
 159         u8 pmk_r1[PMK_LEN];
 160         u8 pmk_r1_name[WPA_PMK_NAME_LEN];
 161         u8 spa[ETH_ALEN];
 162         /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */
 163 };
 164
 165 struct wpa_ft_pmk_cache {
 166         struct wpa_ft_pmk_r0_sa *pmk_r0;
 167         struct wpa_ft_pmk_r1_sa *pmk_r1;
 168 };
 169
 170 struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void)
 171 {
 172         struct wpa_ft_pmk_cache *cache;
 173
 174         cache = os_zalloc(sizeof(*cache));
 175
 176         return cache;
 177 }
 178
 179
 180 void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache)
 181 {
 182         struct wpa_ft_pmk_r0_sa *r0, *r0prev;
 183         struct wpa_ft_pmk_r1_sa *r1, *r1prev;
 184
 185         r0 = cache->pmk_r0;
 186         while (r0) {
 187                 r0prev = r0;
 188                 r0 = r0->next;
 189                 os_memset(r0prev->pmk_r0, 0, PMK_LEN);
 190                 os_free(r0prev);
 191         }
 192
 193         r1 = cache->pmk_r1;
 194         while (r1) {
 195                 r1prev = r1;
 196                 r1 = r1->next;
 197                 os_memset(r1prev->pmk_r1, 0, PMK_LEN);
 198                 os_free(r1prev);
 199         }
 200
 201         os_free(cache);
 202 }
 203
 204
 205 static int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth,
 206                                const u8 *spa, const u8 *pmk_r0,
 207                                const u8 *pmk_r0_name)
 208 {
 209         struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
 210         struct wpa_ft_pmk_r0_sa *r0;
 211
 212         /* TODO: add expiration and limit on number of entries in cache */
 213
 214         r0 = os_zalloc(sizeof(*r0));
 215         if (r0 == NULL)
 216                 return -1;
 217
 218         os_memcpy(r0->pmk_r0, pmk_r0, PMK_LEN);
 219         os_memcpy(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
 220         os_memcpy(r0->spa, spa, ETH_ALEN);
 221
 222         r0->next = cache->pmk_r0;
 223         cache->pmk_r0 = r0;
 224
 225         return 0;
 226 }
 227
 228
 229 static int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth,
 230                                const u8 *spa, const u8 *pmk_r0_name,
 231                                u8 *pmk_r0)
 232 {
 233         struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
 234         struct wpa_ft_pmk_r0_sa *r0;
 235
 236         r0 = cache->pmk_r0;
 237         while (r0) {
 238                 if (os_memcmp(r0->spa, spa, ETH_ALEN) == 0 &&
 239                     os_memcmp(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN)
 240                     == 0) {
 241                         os_memcpy(pmk_r0, r0->pmk_r0, PMK_LEN);
 242                         return 0;
 243                 }
 244
 245                 r0 = r0->next;
 246         }
 247
 248         return -1;
 249 }
 250
 251
 252 static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
 253                                const u8 *spa, const u8 *pmk_r1,
 254                                const u8 *pmk_r1_name)
 255 {
 256         struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
 257         struct wpa_ft_pmk_r1_sa *r1;
 258
 259         /* TODO: add expiration and limit on number of entries in cache */
 260
 261         r1 = os_zalloc(sizeof(*r1));
 262         if (r1 == NULL)
 263                 return -1;
 264
 265         os_memcpy(r1->pmk_r1, pmk_r1, PMK_LEN);
 266         os_memcpy(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
 267         os_memcpy(r1->spa, spa, ETH_ALEN);
 268
 269         r1->next = cache->pmk_r1;
 270         cache->pmk_r1 = r1;
 271
 272         return 0;
 273 }
 274
 275
 276 static int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth,
 277                                const u8 *spa, const u8 *pmk_r1_name,
 278                                u8 *pmk_r1)
 279 {
 280         struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
 281         struct wpa_ft_pmk_r1_sa *r1;
 282
 283         r1 = cache->pmk_r1;
 284         while (r1) {
 285                 if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 &&
 286                     os_memcmp(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN)
 287                     == 0) {
 288                         os_memcpy(pmk_r1, r1->pmk_r1, PMK_LEN);
 289                         return 0;
 290                 }
 291
 292                 r1 = r1->next;
 293         }
 294
 295         return -1;
 296 }
 297
 298
 299 static int wpa_ft_pull_pmk_r1(struct wpa_authenticator *wpa_auth,
 300                               const u8 *s1kh_id, const u8 *r0kh_id,
 301                               size_t r0kh_id_len, const u8 *pmk_r0_name)
 302 {
 303         struct ft_remote_r0kh *r0kh;
 304         struct ft_r0kh_r1kh_pull_frame frame, f;
 305
 306         r0kh = wpa_auth->conf.r0kh_list;
 307         while (r0kh) {
 308                 if (r0kh->id_len == r0kh_id_len &&
 309                     os_memcmp(r0kh->id, r0kh_id, r0kh_id_len) == 0)
 310                         break;
 311                 r0kh = r0kh->next;
 312         }
 313         if (r0kh == NULL)
 314                 return -1;
 315
 316         wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull request to remote R0KH "
 317                    "address " MACSTR, MAC2STR(r0kh->addr));
 318
 319         os_memset(&frame, 0, sizeof(frame));
 320         frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
 321         frame.packet_type = FT_PACKET_R0KH_R1KH_PULL;
 322         frame.data_length = host_to_le16(FT_R0KH_R1KH_PULL_DATA_LEN);
 323         os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN);
 324
 325         /* aes_wrap() does not support inplace encryption, so use a temporary
 326          * buffer for the data. */
 327         if (os_get_random(f.nonce, sizeof(f.nonce))) {
 328                 wpa_printf(MSG_DEBUG, "FT: Failed to get random data for "
 329                            "nonce");
 330                 return -1;
 331         }
 332         os_memcpy(f.pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN);
 333         os_memcpy(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN);
 334         os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN);
 335
 336         if (aes_wrap(r0kh->key, (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8,
 337                      f.nonce, frame.nonce) < 0)
 338                 return -1;
 339
 340         wpa_ft_rrb_send(wpa_auth, r0kh->addr, (u8 *) &frame, sizeof(frame));
 341
 342         return 0;
 343 }
 344
 345
 346 int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
 347                            struct wpa_ptk *ptk, size_t ptk_len)
 348 {
 349         u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN];
 350         u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN];
 351         u8 ptk_name[WPA_PMK_NAME_LEN];
 352         const u8 *mdid = sm->wpa_auth->conf.mobility_domain;
 353         const u8 *r0kh = sm->wpa_auth->conf.r0_key_holder;
 354         size_t r0kh_len = sm->wpa_auth->conf.r0_key_holder_len;
 355         const u8 *r1kh = sm->wpa_auth->conf.r1_key_holder;
 356         const u8 *ssid = sm->wpa_auth->conf.ssid;
 357         size_t ssid_len = sm->wpa_auth->conf.ssid_len;
 358
 359
 360         if (sm->xxkey_len == 0) {
 361                 wpa_printf(MSG_DEBUG, "FT: XXKey not available for key "
 362                            "derivation");
 363                 return -1;
 364         }
 365
 366         wpa_derive_pmk_r0(sm->xxkey, sm->xxkey_len, ssid, ssid_len, mdid,
 367                           r0kh, r0kh_len, sm->addr, pmk_r0, pmk_r0_name);
 368         wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, PMK_LEN);
 369         wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN);
 370         wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_name);
 371
 372         wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, r1kh, sm->addr,
 373                           pmk_r1, pmk_r1_name);
 374         wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, PMK_LEN);
 375         wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", pmk_r1_name, WPA_PMK_NAME_LEN);
 376         wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1, pmk_r1_name);
 377
 378         wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
 379                           sm->wpa_auth->addr, pmk_r1_name,
 380                           (u8 *) ptk, ptk_len, ptk_name);
 381         wpa_hexdump_key(MSG_DEBUG, "FT: PTK", (u8 *) ptk, ptk_len);
 382         wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
 383
 384         return 0;
 385 }
 386
 387
 388 static inline int wpa_auth_get_seqnum(struct wpa_authenticator *wpa_auth,
 389                                       const u8 *addr, int idx, u8 *seq)
 390 {
 391         if (wpa_auth->cb.get_seqnum == NULL)
 392                 return -1;
 393         return wpa_auth->cb.get_seqnum(wpa_auth->cb.ctx, addr, idx, seq);
 394 }
 395
 396
 397 #ifdef CONFIG_IEEE80211W
 398 static inline int wpa_auth_get_seqnum_igtk(struct wpa_authenticator *wpa_auth,
 399                                            const u8 *addr, int idx, u8 *seq)
 400 {
 401         if (wpa_auth->cb.get_seqnum_igtk == NULL)
 402                 return -1;
 403         return wpa_auth->cb.get_seqnum_igtk(wpa_auth->cb.ctx, addr, idx, seq);
 404 }
 405 #endif /* CONFIG_IEEE80211W */
 406
 407
 408 static u8 * wpa_ft_gtk_subelem(struct wpa_state_machine *sm, size_t *len)
 409 {
 410         u8 *subelem;
 411         struct wpa_group *gsm = sm->group;
 412         size_t subelem_len, pad_len;
 413         const u8 *key;
 414         size_t key_len;
 415         u8 keybuf[32];
 416
 417         key_len = gsm->GTK_len;
 418         if (key_len > sizeof(keybuf))
 419                 return NULL;
 420
 421         /*
 422          * Pad key for AES Key Wrap if it is not multiple of 8 bytes or is less
 423          * than 16 bytes.
 424          */
 425         pad_len = key_len % 8;
 426         if (pad_len)
 427                 pad_len = 8 - pad_len;
 428         if (key_len + pad_len < 16)
 429                 pad_len += 8;
 430         if (pad_len) {
 431                 os_memcpy(keybuf, gsm->GTK[gsm->GN - 1], key_len);
 432                 os_memset(keybuf + key_len, 0, pad_len);
 433                 keybuf[key_len] = 0xdd;
 434                 key_len += pad_len;
 435                 key = keybuf;
 436         } else
 437                 key = gsm->GTK[gsm->GN - 1];
 438
 439         /*
 440          * Sub-elem ID[1] | Length[1] | Key Info[1] | Key Length[1] | RSC[8] |
 441          * Key[5..32].
 442          */
 443         subelem_len = 12 + key_len + 8;
 444         subelem = os_zalloc(subelem_len);
 445         if (subelem == NULL)
 446                 return NULL;
 447
 448         subelem[0] = FTIE_SUBELEM_GTK;
 449         subelem[1] = 10 + key_len + 8;
 450         subelem[2] = gsm->GN & 0x03; /* Key ID in B0-B1 of Key Info */
 451         subelem[3] = gsm->GTK_len;
 452         wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN, subelem + 4);
 453         if (aes_wrap(sm->PTK.kek, key_len / 8, key, subelem + 12)) {
 454                 os_free(subelem);
 455                 return NULL;
 456         }
 457
 458         *len = subelem_len;
 459         return subelem;
 460 }
 461
 462
 463 #ifdef CONFIG_IEEE80211W
 464 static u8 * wpa_ft_igtk_subelem(struct wpa_state_machine *sm, size_t *len)
 465 {
 466         u8 *subelem, *pos;
 467         struct wpa_group *gsm = sm->group;
 468         size_t subelem_len;
 469
 470         /* Sub-elem ID[1] | Length[1] | KeyID[2] | IPN[6] | Key Length[1] |
 471          * Key[16+8] */
 472         subelem_len = 1 + 1 + 2 + 6 + 1 + WPA_IGTK_LEN + 8;
 473         subelem = os_zalloc(subelem_len);
 474         if (subelem == NULL)
 475                 return NULL;
 476
 477         pos = subelem;
 478         *pos++ = FTIE_SUBELEM_IGTK;
 479         *pos++ = subelem_len - 2;
 480         WPA_PUT_LE16(pos, gsm->GN_igtk);
 481         pos += 2;
 482         wpa_auth_get_seqnum_igtk(sm->wpa_auth, NULL, gsm->GN_igtk, pos);
 483         pos += 6;
 484         *pos++ = WPA_IGTK_LEN;
 485         if (aes_wrap(sm->PTK.kek, WPA_IGTK_LEN / 8,
 486                      gsm->IGTK[gsm->GN_igtk - 4], pos)) {
 487                 os_free(subelem);
 488                 return NULL;
 489         }
 490
 491         *len = subelem_len;
 492         return subelem;
 493 }
 494 #endif /* CONFIG_IEEE80211W */
 495
 496
 497 static u8 * wpa_ft_process_rdie(u8 *pos, u8 *end, u8 id, u8 descr_count,
 498                                 const u8 *ies, size_t ies_len)
 499 {
 500         struct ieee802_11_elems parse;
 501         struct rsn_rdie *rdie;
 502
 503         wpa_printf(MSG_DEBUG, "FT: Resource Request: id=%d descr_count=%d",
 504                    id, descr_count);
 505         wpa_hexdump(MSG_MSGDUMP, "FT: Resource descriptor IE(s)",
 506                     ies, ies_len);
 507
 508         if (end - pos < (int) sizeof(*rdie)) {
 509                 wpa_printf(MSG_ERROR, "FT: Not enough room for response RDIE");
 510                 return pos;
 511         }
 512
 513         *pos++ = WLAN_EID_RIC_DATA;
 514         *pos++ = sizeof(*rdie);
 515         rdie = (struct rsn_rdie *) pos;
 516         rdie->id = id;
 517         rdie->descr_count = 0;
 518         rdie->status_code = host_to_le16(WLAN_STATUS_SUCCESS);
 519         pos += sizeof(*rdie);
 520
 521         if (ieee802_11_parse_elems((u8 *) ies, ies_len, &parse, 1) ==
 522             ParseFailed) {
 523                 wpa_printf(MSG_DEBUG, "FT: Failed to parse request IEs");
 524                 rdie->status_code =
 525                         host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE);
 526                 return pos;
 527         }
 528
 529 #ifdef NEED_MLME
 530         if (parse.wmm_tspec) {
 531                 struct wmm_tspec_element *tspec;
 532                 int res;
 533
 534                 if (parse.wmm_tspec_len + 2 < (int) sizeof(*tspec)) {
 535                         wpa_printf(MSG_DEBUG, "FT: Too short WMM TSPEC IE "
 536                                    "(%d)", (int) parse.wmm_tspec_len);
 537                         rdie->status_code =
 538                                 host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE);
 539                         return pos;
 540                 }
 541                 if (end - pos < (int) sizeof(*tspec)) {
 542                         wpa_printf(MSG_ERROR, "FT: Not enough room for "
 543                                    "response TSPEC");
 544                         rdie->status_code =
 545                                 host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE);
 546                         return pos;
 547                 }
 548                 tspec = (struct wmm_tspec_element *) pos;
 549                 os_memcpy(tspec, parse.wmm_tspec - 2, sizeof(*tspec));
 550                 res = wmm_process_tspec(tspec);
 551                 wpa_printf(MSG_DEBUG, "FT: ADDTS processing result: %d", res);
 552                 if (res == WMM_ADDTS_STATUS_INVALID_PARAMETERS)
 553                         rdie->status_code =
 554                                 host_to_le16(WLAN_STATUS_INVALID_PARAMETERS);
 555                 else if (res == WMM_ADDTS_STATUS_REFUSED)
 556                         rdie->status_code =
 557                                 host_to_le16(WLAN_STATUS_REQUEST_DECLINED);
 558                 else {
 559                         /* TSPEC accepted; include updated TSPEC in response */
 560                         rdie->descr_count = 1;
 561                         pos += sizeof(*tspec);
 562                 }
 563                 return pos;
 564         }
 565 #endif /* NEED_MLME */
 566
 567         wpa_printf(MSG_DEBUG, "FT: No supported resource requested");
 568         rdie->status_code = host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE);
 569         return pos;
 570 }
 571
 572
 573 static u8 * wpa_ft_process_ric(u8 *pos, u8 *end, const u8 *ric, size_t ric_len)
 574 {
 575         const u8 *rpos, *start;
 576         const struct rsn_rdie *rdie;
 577
 578         wpa_hexdump(MSG_MSGDUMP, "FT: RIC Request", ric, ric_len);
 579
 580         rpos = ric;
 581         while (rpos + sizeof(*rdie) < ric + ric_len) {
 582                 if (rpos[0] != WLAN_EID_RIC_DATA || rpos[1] < sizeof(*rdie) ||
 583                     rpos + 2 + rpos[1] > ric + ric_len)
 584                         break;
 585                 rdie = (const struct rsn_rdie *) (rpos + 2);
 586                 rpos += 2 + rpos[1];
 587                 start = rpos;
 588
 589                 while (rpos + 2 <= ric + ric_len &&
 590                        rpos + 2 + rpos[1] <= ric + ric_len) {
 591                         if (rpos[0] == WLAN_EID_RIC_DATA)
 592                                 break;
 593                         rpos += 2 + rpos[1];
 594                 }
 595                 pos = wpa_ft_process_rdie(pos, end, rdie->id,
 596                                           rdie->descr_count,
 597                                           start, rpos - start);
 598         }
 599
 600         return pos;
 601 }
 602
 603
 604 u8 * wpa_sm_write_assoc_resp_ies(struct wpa_state_machine *sm, u8 *pos,
 605                                  size_t max_len, int auth_alg,
 606                                  const u8 *req_ies, size_t req_ies_len)
 607 {
 608         u8 *end, *mdie, *ftie, *rsnie, *r0kh_id, *subelem = NULL;
 609         size_t mdie_len, ftie_len, rsnie_len, r0kh_id_len, subelem_len = 0;
 610         int res;
 611         struct wpa_auth_config *conf;
 612         struct rsn_ftie *_ftie;
 613         struct wpa_ft_ies parse;
 614         u8 *ric_start;
 615
 616         if (sm == NULL)
 617                 return pos;
 618
 619         conf = &sm->wpa_auth->conf;
 620
 621         if (sm->wpa_key_mgmt != WPA_KEY_MGMT_FT_IEEE8021X &&
 622             sm->wpa_key_mgmt != WPA_KEY_MGMT_FT_PSK)
 623                 return pos;
 624
 625         end = pos + max_len;
 626
 627         /* RSN */
 628         res = wpa_write_rsn_ie(conf, pos, end - pos, sm->pmk_r1_name);
 629         if (res < 0)
 630                 return pos;
 631         rsnie = pos;
 632         rsnie_len = res;
 633         pos += res;
 634
 635         /* Mobility Domain Information */
 636         res = wpa_write_mdie(conf, pos, end - pos);
 637         if (res < 0)
 638                 return pos;
 639         mdie = pos;
 640         mdie_len = res;
 641         pos += res;
 642
 643         /* Fast BSS Transition Information */
 644         if (auth_alg == WLAN_AUTH_FT) {
 645                 subelem = wpa_ft_gtk_subelem(sm, &subelem_len);
 646                 r0kh_id = sm->r0kh_id;
 647                 r0kh_id_len = sm->r0kh_id_len;
 648 #ifdef CONFIG_IEEE80211W
 649                 if (sm->mgmt_frame_prot) {
 650                         u8 *igtk;
 651                         size_t igtk_len;
 652                         u8 *nbuf;
 653                         igtk = wpa_ft_igtk_subelem(sm, &igtk_len);
 654                         if (igtk == NULL) {
 655                                 os_free(subelem);
 656                                 return pos;
 657                         }
 658                         nbuf = os_realloc(subelem, subelem_len + igtk_len);
 659                         if (nbuf == NULL) {
 660                                 os_free(subelem);
 661                                 os_free(igtk);
 662                                 return pos;
 663                         }
 664                         subelem = nbuf;
 665                         os_memcpy(subelem + subelem_len, igtk, igtk_len);
 666                         subelem_len += igtk_len;
 667                         os_free(igtk);
 668                 }
 669 #endif /* CONFIG_IEEE80211W */
 670         } else {
 671                 r0kh_id = conf->r0_key_holder;
 672                 r0kh_id_len = conf->r0_key_holder_len;
 673         }
 674         res = wpa_write_ftie(conf, r0kh_id, r0kh_id_len, NULL, NULL, pos,
 675                              end - pos, subelem, subelem_len);
 676         os_free(subelem);
 677         if (res < 0)
 678                 return pos;
 679         ftie = pos;
 680         ftie_len = res;
 681         pos += res;
 682
 683         _ftie = (struct rsn_ftie *) (ftie + 2);
 684         _ftie->mic_control[1] = 3; /* Information element count */
 685
 686         ric_start = pos;
 687         if (wpa_ft_parse_ies(req_ies, req_ies_len, &parse) == 0 && parse.ric) {
 688                 pos = wpa_ft_process_ric(pos, end, parse.ric, parse.ric_len);
 689                 _ftie->mic_control[1] += ieee802_11_ie_count(ric_start,
 690                                                              pos - ric_start);
 691         }
 692         if (ric_start == pos)
 693                 ric_start = NULL;
 694
 695         if (wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 6,
 696                        mdie, mdie_len, ftie, ftie_len,
 697                        rsnie, rsnie_len,
 698                        ric_start, ric_start ? pos - ric_start : 0,
 699                        _ftie->mic) < 0)
 700                 wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
 701
 702         return pos;
 703 }
 704
 705
 706 static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
 707                              struct wpa_ft_ies *parse)
 708 {
 709         const u8 *end, *pos;
 710
 711         parse->ftie = ie;
 712         parse->ftie_len = ie_len;
 713
 714         pos = ie + sizeof(struct rsn_ftie);
 715         end = ie + ie_len;
 716
 717         while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
 718                 switch (pos[0]) {
 719                 case FTIE_SUBELEM_R1KH_ID:
 720                         if (pos[1] != FT_R1KH_ID_LEN) {
 721                                 wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
 722                                            "length in FTIE: %d", pos[1]);
 723                                 return -1;
 724                         }
 725                         parse->r1kh_id = pos + 2;
 726                         break;
 727                 case FTIE_SUBELEM_GTK:
 728                         parse->gtk = pos + 2;
 729                         parse->gtk_len = pos[1];
 730                         break;
 731                 case FTIE_SUBELEM_R0KH_ID:
 732                         if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
 733                                 wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
 734                                            "length in FTIE: %d", pos[1]);
 735                                 return -1;
 736                         }
 737                         parse->r0kh_id = pos + 2;
 738                         parse->r0kh_id_len = pos[1];
 739                         break;
 740                 }
 741
 742                 pos += 2 + pos[1];
 743         }
 744
 745         return 0;
 746 }
 747
 748
 749 static int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
 750                             struct wpa_ft_ies *parse)
 751 {
 752         const u8 *end, *pos;
 753         struct wpa_ie_data data;
 754         int ret;
 755         const struct rsn_ftie *ftie;
 756         int prot_ie_count = 0;
 757
 758         os_memset(parse, 0, sizeof(*parse));
 759         if (ies == NULL)
 760                 return 0;
 761
 762         pos = ies;
 763         end = ies + ies_len;
 764         while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
 765                 switch (pos[0]) {
 766                 case WLAN_EID_RSN:
 767                         parse->rsn = pos + 2;
 768                         parse->rsn_len = pos[1];
 769                         ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
 770                                                    parse->rsn_len + 2,
 771                                                    &data);
 772                         if (ret < 0) {
 773                                 wpa_printf(MSG_DEBUG, "FT: Failed to parse "
 774                                            "RSN IE: %d", ret);
 775                                 return -1;
 776                         }
 777                         if (data.num_pmkid == 1 && data.pmkid)
 778                                 parse->rsn_pmkid = data.pmkid;
 779                         break;
 780                 case WLAN_EID_MOBILITY_DOMAIN:
 781                         parse->mdie = pos + 2;
 782                         parse->mdie_len = pos[1];
 783                         break;
 784                 case WLAN_EID_FAST_BSS_TRANSITION:
 785                         if (pos[1] < sizeof(*ftie))
 786                                 return -1;
 787                         ftie = (const struct rsn_ftie *) (pos + 2);
 788                         prot_ie_count = ftie->mic_control[1];
 789                         if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
 790                                 return -1;
 791                         break;
 792                 case WLAN_EID_RIC_DATA:
 793                         if (parse->ric == NULL)
 794                                 parse->ric = pos;
 795                 }
 796
 797                 pos += 2 + pos[1];
 798         }
 799
 800         if (prot_ie_count == 0)
 801                 return 0; /* no MIC */
 802
 803         /*
 804          * Check that the protected IE count matches with IEs included in the
 805          * frame.
 806          */
 807         if (parse->rsn)
 808                 prot_ie_count--;
 809         if (parse->mdie)
 810                 prot_ie_count--;
 811         if (parse->ftie)
 812                 prot_ie_count--;
 813         if (prot_ie_count < 0) {
 814                 wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
 815                            "the protected IE count");
 816                 return -1;
 817         }
 818
 819         if (prot_ie_count == 0 && parse->ric) {
 820                 wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
 821                            "included in protected IE count");
 822                 return -1;
 823         }
 824
 825         /* Determine the end of the RIC IE(s) */
 826         pos = parse->ric;
 827         while (pos && pos + 2 <= end && pos + 2 + pos[1] <= end &&
 828                prot_ie_count) {
 829                 prot_ie_count--;
 830                 pos += 2 + pos[1];
 831         }
 832         parse->ric_len = pos - parse->ric;
 833         if (prot_ie_count) {
 834                 wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
 835                            "frame", (int) prot_ie_count);
 836                 return -1;
 837         }
 838
 839         return 0;
 840 }
 841
 842
 843 static inline int wpa_auth_set_key(struct wpa_authenticator *wpa_auth,
 844                                    int vlan_id,
 845                                    wpa_alg alg, const u8 *addr, int idx,
 846                                    u8 *key, size_t key_len)
 847 {
 848         if (wpa_auth->cb.set_key == NULL)
 849                 return -1;
 850         return wpa_auth->cb.set_key(wpa_auth->cb.ctx, vlan_id, alg, addr, idx,
 851                                     key, key_len);
 852 }
 853
 854
 855 static void wpa_ft_install_ptk(struct wpa_state_machine *sm)
 856 {
 857         wpa_alg alg;
 858         int klen;
 859
 860         /* MLME-SETKEYS.request(PTK) */
 861         if (sm->pairwise == WPA_CIPHER_TKIP) {
 862                 alg = WPA_ALG_TKIP;
 863                 klen = 32;
 864         } else if (sm->pairwise == WPA_CIPHER_CCMP) {
 865                 alg = WPA_ALG_CCMP;
 866                 klen = 16;
 867         } else
 868                 return;
 869
 870         /* FIX: add STA entry to kernel/driver here? The set_key will fail
 871          * most likely without this.. At the moment, STA entry is added only
 872          * after association has been completed. Alternatively, could
 873          * re-configure PTK at that point(?).
 874          */
 875         if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0,
 876                              sm->PTK.tk1, klen))
 877                 return;
 878
 879         /* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */
 880         sm->pairwise_set = TRUE;
 881 }
 882
 883
 884 static u16 wpa_ft_process_auth_req(struct wpa_state_machine *sm,
 885                                    const u8 *ies, size_t ies_len,
 886                                    u8 **resp_ies, size_t *resp_ies_len)
 887 {
 888         struct rsn_mdie *mdie;
 889         struct rsn_ftie *ftie;
 890         u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN];
 891         u8 ptk_name[WPA_PMK_NAME_LEN];
 892         struct wpa_auth_config *conf;
 893         struct wpa_ft_ies parse;
 894         size_t buflen, ptk_len;
 895         int ret;
 896         u8 *pos, *end;
 897
 898         *resp_ies = NULL;
 899         *resp_ies_len = 0;
 900
 901         sm->pmk_r1_name_valid = 0;
 902         conf = &sm->wpa_auth->conf;
 903
 904         wpa_hexdump(MSG_DEBUG, "FT: Received authentication frame IEs",
 905                     ies, ies_len);
 906
 907         if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
 908                 wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs");
 909                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 910         }
 911
 912         mdie = (struct rsn_mdie *) parse.mdie;
 913         if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
 914             os_memcmp(mdie->mobility_domain,
 915                       sm->wpa_auth->conf.mobility_domain,
 916                       MOBILITY_DOMAIN_ID_LEN) != 0) {
 917                 wpa_printf(MSG_DEBUG, "FT: Invalid MDIE");
 918                 return WLAN_STATUS_INVALID_MDIE;
 919         }
 920
 921         ftie = (struct rsn_ftie *) parse.ftie;
 922         if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
 923                 wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
 924                 return WLAN_STATUS_INVALID_FTIE;
 925         }
 926
 927         os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN);
 928
 929         if (parse.r0kh_id == NULL) {
 930                 wpa_printf(MSG_DEBUG, "FT: Invalid FTIE - no R0KH-ID");
 931                 return WLAN_STATUS_INVALID_FTIE;
 932         }
 933
 934         wpa_hexdump(MSG_DEBUG, "FT: STA R0KH-ID",
 935                     parse.r0kh_id, parse.r0kh_id_len);
 936         os_memcpy(sm->r0kh_id, parse.r0kh_id, parse.r0kh_id_len);
 937         sm->r0kh_id_len = parse.r0kh_id_len;
 938
 939         if (parse.rsn_pmkid == NULL) {
 940                 wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE");
 941                 return WLAN_STATUS_INVALID_PMKID;
 942         }
 943
 944         wpa_hexdump(MSG_DEBUG, "FT: Requested PMKR0Name",
 945                     parse.rsn_pmkid, WPA_PMK_NAME_LEN);
 946         wpa_derive_pmk_r1_name(parse.rsn_pmkid,
 947                                sm->wpa_auth->conf.r1_key_holder, sm->addr,
 948                                pmk_r1_name);
 949         wpa_hexdump(MSG_DEBUG, "FT: Derived requested PMKR1Name",
 950                     pmk_r1_name, WPA_PMK_NAME_LEN);
 951
 952         if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name, pmk_r1) <
 953             0) {
 954                 if (wpa_ft_pull_pmk_r1(sm->wpa_auth, sm->addr, sm->r0kh_id,
 955                                        sm->r0kh_id_len, parse.rsn_pmkid) < 0) {
 956                         wpa_printf(MSG_DEBUG, "FT: Did not have matching "
 957                                    "PMK-R1 and unknown R0KH-ID");
 958                         return WLAN_STATUS_INVALID_PMKID;
 959                 }
 960
 961                 /*
 962                  * TODO: Should return "status pending" (and the caller should
 963                  * not send out response now). The real response will be sent
 964                  * once the response from R0KH is received.
 965                  */
 966                 return WLAN_STATUS_INVALID_PMKID;
 967         }
 968
 969         wpa_hexdump_key(MSG_DEBUG, "FT: Selected PMK-R1", pmk_r1, PMK_LEN);
 970         sm->pmk_r1_name_valid = 1;
 971         os_memcpy(sm->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN);
 972
 973         if (os_get_random(sm->ANonce, WPA_NONCE_LEN)) {
 974                 wpa_printf(MSG_DEBUG, "FT: Failed to get random data for "
 975                            "ANonce");
 976                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 977         }
 978
 979         wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
 980                     sm->SNonce, WPA_NONCE_LEN);
 981         wpa_hexdump(MSG_DEBUG, "FT: Generated ANonce",
 982                     sm->ANonce, WPA_NONCE_LEN);
 983
 984         ptk_len = sm->pairwise == WPA_CIPHER_CCMP ? 48 : 64;
 985         wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
 986                           sm->wpa_auth->addr, pmk_r1_name,
 987                           (u8 *) &sm->PTK, ptk_len, ptk_name);
 988         wpa_hexdump_key(MSG_DEBUG, "FT: PTK",
 989                         (u8 *) &sm->PTK, ptk_len);
 990         wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN);
 991
 992         wpa_ft_install_ptk(sm);
 993
 994         buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) +
 995                 2 + FT_R1KH_ID_LEN + 200;
 996         *resp_ies = os_zalloc(buflen);
 997         if (*resp_ies == NULL) {
 998                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
 999         }
1000
1001         pos = *resp_ies;
1002         end = *resp_ies + buflen;
1003
1004         ret = wpa_write_rsn_ie(conf, pos, end - pos, parse.rsn_pmkid);
1005         if (ret < 0) {
1006                 os_free(*resp_ies);
1007                 *resp_ies = NULL;
1008                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1009         }
1010         pos += ret;
1011
1012         ret = wpa_write_mdie(conf, pos, end - pos);
1013         if (ret < 0) {
1014                 os_free(*resp_ies);
1015                 *resp_ies = NULL;
1016                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1017         }
1018         pos += ret;
1019
1020         ret = wpa_write_ftie(conf, parse.r0kh_id, parse.r0kh_id_len,
1021                              sm->ANonce, sm->SNonce, pos, end - pos, NULL, 0);
1022         if (ret < 0) {
1023                 os_free(*resp_ies);
1024                 *resp_ies = NULL;
1025                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1026         }
1027         pos += ret;
1028
1029         *resp_ies_len = pos - *resp_ies;
1030
1031         return WLAN_STATUS_SUCCESS;
1032 }
1033
1034
1035 void wpa_ft_process_auth(struct wpa_state_machine *sm, const u8 *bssid,
1036                          u16 auth_transaction, const u8 *ies, size_t ies_len,
1037                          void (*cb)(void *ctx, const u8 *dst, const u8 *bssid,
1038                                     u16 auth_transaction, u16 status,
1039                                     const u8 *ies, size_t ies_len),
1040                          void *ctx)
1041 {
1042         u16 status;
1043         u8 *resp_ies;
1044         size_t resp_ies_len;
1045
1046         if (sm == NULL) {
1047                 wpa_printf(MSG_DEBUG, "FT: Received authentication frame, but "
1048                            "WPA SM not available");
1049                 return;
1050         }
1051
1052         wpa_printf(MSG_DEBUG, "FT: Received authentication frame: STA=" MACSTR
1053                    " BSSID=" MACSTR " transaction=%d",
1054                    MAC2STR(sm->addr), MAC2STR(bssid), auth_transaction);
1055         status = wpa_ft_process_auth_req(sm, ies, ies_len, &resp_ies,
1056                                          &resp_ies_len);
1057
1058         wpa_printf(MSG_DEBUG, "FT: FT authentication response: dst=" MACSTR
1059                    " auth_transaction=%d status=%d",
1060                    MAC2STR(sm->addr), auth_transaction + 1, status);
1061         wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len);
1062         cb(ctx, sm->addr, bssid, auth_transaction + 1, status,
1063            resp_ies, resp_ies_len);
1064         os_free(resp_ies);
1065 }
1066
1067
1068 u16 wpa_ft_validate_reassoc(struct wpa_state_machine *sm, const u8 *ies,
1069                             size_t ies_len)
1070 {
1071         struct wpa_ft_ies parse;
1072         struct rsn_mdie *mdie;
1073         struct rsn_ftie *ftie;
1074         u8 mic[16];
1075
1076         if (sm == NULL)
1077                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1078
1079         wpa_hexdump(MSG_DEBUG, "FT: Reassoc Req IEs", ies, ies_len);
1080
1081         if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) {
1082                 wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs");
1083                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1084         }
1085
1086         if (parse.rsn == NULL) {
1087                 wpa_printf(MSG_DEBUG, "FT: No RSNIE in Reassoc Req");
1088                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1089         }
1090
1091         if (parse.rsn_pmkid == NULL) {
1092                 wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE");
1093                 return WLAN_STATUS_INVALID_PMKID;
1094         }
1095
1096         if (os_memcmp(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) != 0)
1097         {
1098                 wpa_printf(MSG_DEBUG, "FT: PMKID in Reassoc Req did not match "
1099                            "with the PMKR1Name derived from auth request");
1100                 return WLAN_STATUS_INVALID_PMKID;
1101         }
1102
1103         mdie = (struct rsn_mdie *) parse.mdie;
1104         if (mdie == NULL || parse.mdie_len < sizeof(*mdie) ||
1105             os_memcmp(mdie->mobility_domain,
1106                       sm->wpa_auth->conf.mobility_domain,
1107                       MOBILITY_DOMAIN_ID_LEN) != 0) {
1108                 wpa_printf(MSG_DEBUG, "FT: Invalid MDIE");
1109                 return WLAN_STATUS_INVALID_MDIE;
1110         }
1111
1112         ftie = (struct rsn_ftie *) parse.ftie;
1113         if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) {
1114                 wpa_printf(MSG_DEBUG, "FT: Invalid FTIE");
1115                 return WLAN_STATUS_INVALID_FTIE;
1116         }
1117
1118         if (wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 5,
1119                        parse.mdie - 2, parse.mdie_len + 2,
1120                        parse.ftie - 2, parse.ftie_len + 2,
1121                        parse.rsn - 2, parse.rsn_len + 2,
1122                        parse.ric, parse.ric_len,
1123                        mic) < 0) {
1124                 wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC");
1125                 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1126         }
1127
1128         if (os_memcmp(mic, ftie->mic, 16) != 0) {
1129                 wpa_printf(MSG_DEBUG, "FT: Invalid MIC in FTIE");
1130                 wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC", ftie->mic, 16);
1131                 wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC", mic, 16);
1132                 return WLAN_STATUS_INVALID_FTIE;
1133         }
1134
1135         return WLAN_STATUS_SUCCESS;
1136 }
1137
1138
1139 int wpa_ft_action_rx(struct wpa_state_machine *sm, const u8 *data, size_t len)
1140 {
1141         const u8 *sta_addr, *target_ap;
1142         const u8 *ies;
1143         size_t ies_len;
1144         u8 action;
1145         struct ft_rrb_frame *frame;
1146
1147         if (sm == NULL)
1148                 return -1;
1149
1150         /*
1151          * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6]
1152          * FT Request action frame body[variable]
1153          */
1154
1155         if (len < 14) {
1156                 wpa_printf(MSG_DEBUG, "FT: Too short FT Action frame "
1157                            "(len=%lu)", (unsigned long) len);
1158                 return -1;
1159         }
1160
1161         action = data[1];
1162         sta_addr = data + 2;
1163         target_ap = data + 8;
1164         ies = data + 14;
1165         ies_len = len - 14;
1166
1167         wpa_printf(MSG_DEBUG, "FT: Received FT Action frame (STA=" MACSTR
1168                    " Target AP=" MACSTR " Action=%d)",
1169                    MAC2STR(sta_addr), MAC2STR(target_ap), action);
1170
1171         if (os_memcmp(sta_addr, sm->addr, ETH_ALEN) != 0) {
1172                 wpa_printf(MSG_DEBUG, "FT: Mismatch in FT Action STA address: "
1173                            "STA=" MACSTR " STA-Address=" MACSTR,
1174                            MAC2STR(sm->addr), MAC2STR(sta_addr));
1175                 return -1;
1176         }
1177
1178         /*
1179          * Do some sanity checking on the target AP address (not own and not
1180          * broadcast. This could be extended to filter based on a list of known
1181          * APs in the MD (if such a list were configured).
1182          */
1183         if ((target_ap[0] & 0x01) ||
1184             os_memcmp(target_ap, sm->wpa_auth->addr, ETH_ALEN) == 0) {
1185                 wpa_printf(MSG_DEBUG, "FT: Invalid Target AP in FT Action "
1186                            "frame");
1187                 return -1;
1188         }
1189
1190         wpa_hexdump(MSG_MSGDUMP, "FT: Action frame body", ies, ies_len);
1191
1192         /* RRB - Forward action frame to the target AP */
1193         frame = os_malloc(sizeof(*frame) + len);
1194         frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1195         frame->packet_type = FT_PACKET_REQUEST;
1196         frame->action_length = host_to_le16(len);
1197         os_memcpy(frame->ap_address, sm->wpa_auth->addr, ETH_ALEN);
1198         os_memcpy(frame + 1, data, len);
1199
1200         wpa_ft_rrb_send(sm->wpa_auth, target_ap, (u8 *) frame,
1201                         sizeof(*frame) + len);
1202         os_free(frame);
1203
1204         return 0;
1205 }
1206
1207
1208 static int wpa_ft_rrb_rx_request(struct wpa_authenticator *wpa_auth,
1209                                  const u8 *current_ap, const u8 *sta_addr,
1210                                  const u8 *body, size_t len)
1211 {
1212         struct wpa_state_machine *sm;
1213         u16 status;
1214         u8 *resp_ies, *pos;
1215         size_t resp_ies_len, rlen;
1216         struct ft_rrb_frame *frame;
1217
1218         sm = wpa_ft_add_sta(wpa_auth, sta_addr);
1219         if (sm == NULL) {
1220                 wpa_printf(MSG_DEBUG, "FT: Failed to add new STA based on "
1221                            "RRB Request");
1222                 return -1;
1223         }
1224
1225         wpa_hexdump(MSG_MSGDUMP, "FT: RRB Request Frame body", body, len);
1226
1227         status = wpa_ft_process_auth_req(sm, body, len, &resp_ies,
1228                                          &resp_ies_len);
1229
1230         wpa_printf(MSG_DEBUG, "FT: RRB authentication response: STA=" MACSTR
1231                    " CurrentAP=" MACSTR " status=%d",
1232                    MAC2STR(sm->addr), MAC2STR(current_ap), status);
1233         wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len);
1234
1235         /* RRB - Forward action frame response to the Current AP */
1236
1237         /*
1238          * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6]
1239          * Status_Code[2] FT Request action frame body[variable]
1240          */
1241         rlen = 2 + 2 * ETH_ALEN + 2 + resp_ies_len;
1242
1243         frame = os_malloc(sizeof(*frame) + rlen);
1244         frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1245         frame->packet_type = FT_PACKET_RESPONSE;
1246         frame->action_length = host_to_le16(rlen);
1247         os_memcpy(frame->ap_address, wpa_auth->addr, ETH_ALEN);
1248         pos = (u8 *) (frame + 1);
1249         *pos++ = WLAN_ACTION_FT;
1250         *pos++ = 2; /* Action: Response */
1251         os_memcpy(pos, sta_addr, ETH_ALEN);
1252         pos += ETH_ALEN;
1253         os_memcpy(pos, wpa_auth->addr, ETH_ALEN);
1254         pos += ETH_ALEN;
1255         WPA_PUT_LE16(pos, status);
1256         pos += 2;
1257         if (resp_ies) {
1258                 os_memcpy(pos, resp_ies, resp_ies_len);
1259                 os_free(resp_ies);
1260         }
1261
1262         wpa_ft_rrb_send(wpa_auth, current_ap, (u8 *) frame,
1263                         sizeof(*frame) + rlen);
1264         os_free(frame);
1265
1266         return 0;
1267 }
1268
1269
1270 static int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth,
1271                               const u8 *src_addr,
1272                               const u8 *data, size_t data_len)
1273 {
1274         struct ft_r0kh_r1kh_pull_frame *frame, f;
1275         struct ft_remote_r1kh *r1kh;
1276         struct ft_r0kh_r1kh_resp_frame resp, r;
1277         u8 pmk_r0[PMK_LEN];
1278
1279         wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull");
1280
1281         if (data_len < sizeof(*frame))
1282                 return -1;
1283
1284         r1kh = wpa_auth->conf.r1kh_list;
1285         while (r1kh) {
1286                 if (os_memcmp(r1kh->addr, src_addr, ETH_ALEN) == 0)
1287                         break;
1288                 r1kh = r1kh->next;
1289         }
1290         if (r1kh == NULL) {
1291                 wpa_printf(MSG_DEBUG, "FT: No matching R1KH address found for "
1292                            "PMK-R1 pull source address " MACSTR,
1293                            MAC2STR(src_addr));
1294                 return -1;
1295         }
1296
1297         frame = (struct ft_r0kh_r1kh_pull_frame *) data;
1298         /* aes_unwrap() does not support inplace decryption, so use a temporary
1299          * buffer for the data. */
1300         if (aes_unwrap(r1kh->key, (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8,
1301                        frame->nonce, f.nonce) < 0) {
1302                 wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull "
1303                            "request from " MACSTR, MAC2STR(src_addr));
1304                 return -1;
1305         }
1306
1307         wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
1308                     f.nonce, sizeof(f.nonce));
1309         wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR0Name",
1310                     f.pmk_r0_name, WPA_PMK_NAME_LEN);
1311         wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR "S1KH-ID="
1312                    MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
1313
1314         os_memset(&resp, 0, sizeof(resp));
1315         resp.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1316         resp.packet_type = FT_PACKET_R0KH_R1KH_RESP;
1317         resp.data_length = host_to_le16(FT_R0KH_R1KH_RESP_DATA_LEN);
1318         os_memcpy(resp.ap_address, wpa_auth->addr, ETH_ALEN);
1319
1320         /* aes_wrap() does not support inplace encryption, so use a temporary
1321          * buffer for the data. */
1322         os_memcpy(r.nonce, f.nonce, sizeof(f.nonce));
1323         os_memcpy(r.r1kh_id, f.r1kh_id, FT_R1KH_ID_LEN);
1324         os_memcpy(r.s1kh_id, f.s1kh_id, ETH_ALEN);
1325         if (wpa_ft_fetch_pmk_r0(wpa_auth, f.s1kh_id, f.pmk_r0_name, pmk_r0) <
1326             0) {
1327                 wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name found for "
1328                            "PMK-R1 pull");
1329                 return -1;
1330         }
1331
1332         wpa_derive_pmk_r1(pmk_r0, f.pmk_r0_name, f.r1kh_id, f.s1kh_id,
1333                           r.pmk_r1, r.pmk_r1_name);
1334         wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", r.pmk_r1, PMK_LEN);
1335         wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", r.pmk_r1_name,
1336                     WPA_PMK_NAME_LEN);
1337
1338         if (aes_wrap(r1kh->key, (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8,
1339                      r.nonce, resp.nonce) < 0) {
1340                 os_memset(pmk_r0, 0, PMK_LEN);
1341                 return -1;
1342         }
1343
1344         os_memset(pmk_r0, 0, PMK_LEN);
1345
1346         wpa_ft_rrb_send(wpa_auth, src_addr, (u8 *) &resp, sizeof(resp));
1347
1348         return 0;
1349 }
1350
1351
1352 static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
1353                               const u8 *src_addr,
1354                               const u8 *data, size_t data_len)
1355 {
1356         struct ft_r0kh_r1kh_resp_frame *frame, f;
1357         struct ft_remote_r0kh *r0kh;
1358
1359         wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull response");
1360
1361         if (data_len < sizeof(*frame))
1362                 return -1;
1363
1364         r0kh = wpa_auth->conf.r0kh_list;
1365         while (r0kh) {
1366                 if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0)
1367                         break;
1368                 r0kh = r0kh->next;
1369         }
1370         if (r0kh == NULL) {
1371                 wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for "
1372                            "PMK-R0 pull response source address " MACSTR,
1373                            MAC2STR(src_addr));
1374                 return -1;
1375         }
1376
1377         frame = (struct ft_r0kh_r1kh_resp_frame *) data;
1378         /* aes_unwrap() does not support inplace decryption, so use a temporary
1379          * buffer for the data. */
1380         if (aes_unwrap(r0kh->key, (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8,
1381                        frame->nonce, f.nonce) < 0) {
1382                 wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull "
1383                            "response from " MACSTR, MAC2STR(src_addr));
1384                 return -1;
1385         }
1386
1387         if (os_memcmp(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN)
1388             != 0) {
1389                 wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull response did not use a "
1390                            "matching R1KH-ID");
1391                 return -1;
1392         }
1393
1394         /* TODO: verify that <nonce,s1kh_id> matches with a pending request
1395          * and call this requests callback function to finish request
1396          * processing */
1397
1398         wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
1399                     f.nonce, sizeof(f.nonce));
1400         wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR "S1KH-ID="
1401                    MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
1402         wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 pull - PMK-R1",
1403                         f.pmk_r1, PMK_LEN);
1404         wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR1Name",
1405                         f.pmk_r1_name, WPA_PMK_NAME_LEN);
1406
1407         wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name);
1408         os_memset(f.pmk_r1, 0, PMK_LEN);
1409
1410         return 0;
1411 }
1412
1413
1414 static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
1415                               const u8 *src_addr,
1416                               const u8 *data, size_t data_len)
1417 {
1418         struct ft_r0kh_r1kh_push_frame *frame, f;
1419         struct ft_remote_r0kh *r0kh;
1420         struct os_time now;
1421         os_time_t tsend;
1422
1423         wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 push");
1424
1425         if (data_len < sizeof(*frame))
1426                 return -1;
1427
1428         r0kh = wpa_auth->conf.r0kh_list;
1429         while (r0kh) {
1430                 if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0)
1431                         break;
1432                 r0kh = r0kh->next;
1433         }
1434         if (r0kh == NULL) {
1435                 wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for "
1436                            "PMK-R0 push source address " MACSTR,
1437                            MAC2STR(src_addr));
1438                 return -1;
1439         }
1440
1441         frame = (struct ft_r0kh_r1kh_push_frame *) data;
1442         /* aes_unwrap() does not support inplace decryption, so use a temporary
1443          * buffer for the data. */
1444         if (aes_unwrap(r0kh->key, (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8,
1445                        frame->timestamp, f.timestamp) < 0) {
1446                 wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 push from "
1447                            MACSTR, MAC2STR(src_addr));
1448                 return -1;
1449         }
1450
1451         os_get_time(&now);
1452         tsend = WPA_GET_LE32(f.timestamp);
1453         if ((now.sec > tsend && now.sec - tsend > 60) ||
1454             (now.sec < tsend && tsend - now.sec > 60)) {
1455                 wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not have a valid "
1456                            "timestamp: sender time %d own time %d\n",
1457                            (int) tsend, (int) now.sec);
1458                 return -1;
1459         }
1460
1461         if (os_memcmp(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN)
1462             != 0) {
1463                 wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not use a matching "
1464                            "R1KH-ID (received " MACSTR " own " MACSTR ")",
1465                            MAC2STR(f.r1kh_id),
1466                            MAC2STR(wpa_auth->conf.r1_key_holder));
1467                 return -1;
1468         }
1469
1470         wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - R1KH-ID=" MACSTR " S1KH-ID="
1471                    MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
1472         wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 push - PMK-R1",
1473                         f.pmk_r1, PMK_LEN);
1474         wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - PMKR1Name",
1475                         f.pmk_r1_name, WPA_PMK_NAME_LEN);
1476
1477         wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name);
1478         os_memset(f.pmk_r1, 0, PMK_LEN);
1479
1480         return 0;
1481 }
1482
1483
1484 int wpa_ft_rrb_rx(struct wpa_authenticator *wpa_auth, const u8 *src_addr,
1485                   const u8 *data, size_t data_len)
1486 {
1487         struct ft_rrb_frame *frame;
1488         u16 alen;
1489         const u8 *pos, *end, *start;
1490         u8 action;
1491         const u8 *sta_addr, *target_ap_addr;
1492
1493         wpa_printf(MSG_DEBUG, "FT: RRB received frame from remote AP " MACSTR,
1494                    MAC2STR(src_addr));
1495
1496         if (data_len < sizeof(*frame)) {
1497                 wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (data_len=%lu)",
1498                            (unsigned long) data_len);
1499                 return -1;
1500         }
1501
1502         pos = data;
1503         frame = (struct ft_rrb_frame *) pos;
1504         pos += sizeof(*frame);
1505
1506         alen = le_to_host16(frame->action_length);
1507         wpa_printf(MSG_DEBUG, "FT: RRB frame - frame_type=%d packet_type=%d "
1508                    "action_length=%d ap_address=" MACSTR,
1509                    frame->frame_type, frame->packet_type, alen,
1510                    MAC2STR(frame->ap_address));
1511
1512         if (frame->frame_type != RSN_REMOTE_FRAME_TYPE_FT_RRB) {
1513                 /* Discard frame per IEEE Std 802.11r-2008, 11A.10.3 */
1514                 wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with "
1515                            "unrecognized type %d", frame->frame_type);
1516                 return -1;
1517         }
1518
1519         if (alen > data_len - sizeof(*frame)) {
1520                 wpa_printf(MSG_DEBUG, "FT: RRB frame too short for action "
1521                            "frame");
1522                 return -1;
1523         }
1524
1525         if (frame->packet_type == FT_PACKET_R0KH_R1KH_PULL)
1526                 return wpa_ft_rrb_rx_pull(wpa_auth, src_addr, data, data_len);
1527         if (frame->packet_type == FT_PACKET_R0KH_R1KH_RESP)
1528                 return wpa_ft_rrb_rx_resp(wpa_auth, src_addr, data, data_len);
1529         if (frame->packet_type == FT_PACKET_R0KH_R1KH_PUSH)
1530                 return wpa_ft_rrb_rx_push(wpa_auth, src_addr, data, data_len);
1531
1532         wpa_hexdump(MSG_MSGDUMP, "FT: RRB - FT Action frame", pos, alen);
1533
1534         if (alen < 1 + 1 + 2 * ETH_ALEN) {
1535                 wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (not enough "
1536                            "room for Action Frame body); alen=%lu",
1537                            (unsigned long) alen);
1538                 return -1;
1539         }
1540         start = pos;
1541         end = pos + alen;
1542
1543         if (*pos != WLAN_ACTION_FT) {
1544                 wpa_printf(MSG_DEBUG, "FT: Unexpected Action frame category "
1545                            "%d", *pos);
1546                 return -1;
1547         }
1548
1549         pos++;
1550         action = *pos++;
1551         sta_addr = pos;
1552         pos += ETH_ALEN;
1553         target_ap_addr = pos;
1554         pos += ETH_ALEN;
1555         wpa_printf(MSG_DEBUG, "FT: RRB Action Frame: action=%d sta_addr="
1556                    MACSTR " target_ap_addr=" MACSTR,
1557                    action, MAC2STR(sta_addr), MAC2STR(target_ap_addr));
1558
1559         if (frame->packet_type == FT_PACKET_REQUEST) {
1560                 wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Request");
1561
1562                 if (action != 1) {
1563                         wpa_printf(MSG_DEBUG, "FT: Unexpected Action %d in "
1564                                    "RRB Request", action);
1565                         return -1;
1566                 }
1567
1568                 if (os_memcmp(target_ap_addr, wpa_auth->addr, ETH_ALEN) != 0) {
1569                         wpa_printf(MSG_DEBUG, "FT: Target AP address in the "
1570                                    "RRB Request does not match with own "
1571                                    "address");
1572                         return -1;
1573                 }
1574
1575                 if (wpa_ft_rrb_rx_request(wpa_auth, frame->ap_address,
1576                                           sta_addr, pos, end - pos) < 0)
1577                         return -1;
1578         } else if (frame->packet_type == FT_PACKET_RESPONSE) {
1579                 u16 status_code;
1580
1581                 if (end - pos < 2) {
1582                         wpa_printf(MSG_DEBUG, "FT: Not enough room for status "
1583                                    "code in RRB Response");
1584                         return -1;
1585                 }
1586                 status_code = WPA_GET_LE16(pos);
1587                 pos += 2;
1588
1589                 wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Response "
1590                            "(status_code=%d)", status_code);
1591
1592                 if (wpa_ft_action_send(wpa_auth, sta_addr, start, alen) < 0)
1593                         return -1;
1594         } else {
1595                 wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with unknown "
1596                            "packet_type %d", frame->packet_type);
1597                 return -1;
1598         }
1599
1600         return 0;
1601 }
1602
1603
1604 static void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth,
1605                                    struct wpa_ft_pmk_r0_sa *pmk_r0,
1606                                    struct ft_remote_r1kh *r1kh,
1607                                    const u8 *s1kh_id)
1608 {
1609         struct ft_r0kh_r1kh_push_frame frame, f;
1610         struct os_time now;
1611
1612         os_memset(&frame, 0, sizeof(frame));
1613         frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB;
1614         frame.packet_type = FT_PACKET_R0KH_R1KH_PUSH;
1615         frame.data_length = host_to_le16(FT_R0KH_R1KH_PUSH_DATA_LEN);
1616         os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN);
1617
1618         /* aes_wrap() does not support inplace encryption, so use a temporary
1619          * buffer for the data. */
1620         os_memcpy(f.r1kh_id, r1kh->id, FT_R1KH_ID_LEN);
1621         os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN);
1622         os_memcpy(f.pmk_r0_name, pmk_r0->pmk_r0_name, WPA_PMK_NAME_LEN);
1623         wpa_derive_pmk_r1(pmk_r0->pmk_r0, pmk_r0->pmk_r0_name, r1kh->id,
1624                           s1kh_id, f.pmk_r1, f.pmk_r1_name);
1625         wpa_printf(MSG_DEBUG, "FT: R1KH-ID " MACSTR, MAC2STR(r1kh->id));
1626         wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f.pmk_r1, PMK_LEN);
1627         wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", f.pmk_r1_name,
1628                     WPA_PMK_NAME_LEN);
1629         os_get_time(&now);
1630         WPA_PUT_LE32(f.timestamp, now.sec);
1631         if (aes_wrap(r1kh->key, (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8,
1632                      f.timestamp, frame.timestamp) < 0)
1633                 return;
1634
1635         wpa_ft_rrb_send(wpa_auth, r1kh->addr, (u8 *) &frame, sizeof(frame));
1636 }
1637
1638
1639 void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr)
1640 {
1641         struct wpa_ft_pmk_r0_sa *r0;
1642         struct ft_remote_r1kh *r1kh;
1643
1644         if (!wpa_auth->conf.pmk_r1_push)
1645                 return;
1646
1647         r0 = wpa_auth->ft_pmk_cache->pmk_r0;
1648         while (r0) {
1649                 if (os_memcmp(r0->spa, addr, ETH_ALEN) == 0)
1650                         break;
1651                 r0 = r0->next;
1652         }
1653
1654         if (r0 == NULL || r0->pmk_r1_pushed)
1655                 return;
1656         r0->pmk_r1_pushed = 1;
1657
1658         wpa_printf(MSG_DEBUG, "FT: Deriving and pushing PMK-R1 keys to R1KHs "
1659                    "for STA " MACSTR, MAC2STR(addr));
1660
1661         r1kh = wpa_auth->conf.r1kh_list;
1662         while (r1kh) {
1663                 wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr);
1664                 r1kh = r1kh->next;
1665         }
1666 }
1667
1668 #endif /* CONFIG_IEEE80211R */