wpa_auth_ft.c revision 4b06059785b935dd1f4f09314e4e12c417d2c6a4
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * hostapd - IEEE 802.11r - Fast BSS Transition 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "utils/includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "utils/common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_common.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/aes_wrap.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/random.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "ap_config.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "ieee802_11.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wmm.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa_auth.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa_auth_i.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211R 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_send(struct wpa_authenticator *wpa_auth, const u8 *dst, 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.send_ether == NULL) 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB send to " MACSTR, MAC2STR(dst)); 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.send_ether(wpa_auth->cb.ctx, dst, ETH_P_RRB, 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, data_len); 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_action_send(struct wpa_authenticator *wpa_auth, 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *dst, const u8 *data, size_t data_len) 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.send_ft_action == NULL) 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.send_ft_action(wpa_auth->cb.ctx, dst, 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, data_len); 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpa_state_machine * 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtwpa_ft_add_sta(struct wpa_authenticator *wpa_auth, const u8 *sta_addr) 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.add_sta == NULL) 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.add_sta(wpa_auth->cb.ctx, sta_addr); 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidtstatic int wpa_ft_add_tspec(struct wpa_authenticator *wpa_auth, 5661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt const u8 *sta_addr, 5761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt u8 *tspec_ie, size_t tspec_ielen) 5861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt{ 5961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wpa_auth->cb.add_tspec == NULL) { 6061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: add_tspec is not initialized"); 6161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt return -1; 6261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 6361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt return wpa_auth->cb.add_tspec(wpa_auth->cb.ctx, sta_addr, tspec_ie, 6461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt tspec_ielen); 6561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt} 6661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 6761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len) 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos = buf; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 capab; 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 2 + sizeof(struct rsn_mdie)) 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_EID_MOBILITY_DOMAIN; 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = MOBILITY_DOMAIN_ID_LEN + 1; 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, conf->mobility_domain, MOBILITY_DOMAIN_ID_LEN); 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += MOBILITY_DOMAIN_ID_LEN; 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab = 0; 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->ft_over_ds) 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab |= RSN_FT_CAPAB_FT_OVER_DS; 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = capab; 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos - buf; 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id, 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t r0kh_id_len, 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *anonce, const u8 *snonce, 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf, size_t len, const u8 *subelem, 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t subelem_len) 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos = buf, *ielen; 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *hdr; 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 2 + sizeof(*hdr) + 2 + FT_R1KH_ID_LEN + 2 + r0kh_id_len + 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len) 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_EID_FAST_BSS_TRANSITION; 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = pos++; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ftie *) pos; 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(hdr, 0, sizeof(*hdr)); 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*hdr); 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->mic_control, 0); 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (anonce) 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN); 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (snonce) 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN); 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Optional Parameters */ 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FTIE_SUBELEM_R1KH_ID; 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FT_R1KH_ID_LEN; 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, conf->r1_key_holder, FT_R1KH_ID_LEN); 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += FT_R1KH_ID_LEN; 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh_id) { 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FTIE_SUBELEM_R0KH_ID; 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = r0kh_id_len; 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, r0kh_id, r0kh_id_len); 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += r0kh_id_len; 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (subelem) { 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, subelem, subelem_len); 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += subelem_len; 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *ielen = pos - buf - 2; 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos - buf; 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_r0_sa { 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *next; 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0[PMK_LEN]; 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 spa[ETH_ALEN]; 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */ 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pmk_r1_pushed; 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_r1_sa { 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *next; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1[PMK_LEN]; 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 spa[ETH_ALEN]; 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */ 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_cache { 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *pmk_r0; 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *pmk_r1; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void) 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache; 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cache = os_zalloc(sizeof(*cache)); 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return cache; 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache) 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0, *r0prev; 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *r1, *r1prev; 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = cache->pmk_r0; 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0) { 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0prev = r0; 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = r0->next; 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(r0prev->pmk_r0, 0, PMK_LEN); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(r0prev); 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = cache->pmk_r1; 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1) { 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1prev = r1; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = r1->next; 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(r1prev->pmk_r1, 0, PMK_LEN); 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(r1prev); 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(cache); 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth, 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r0, 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pmk_r0_name, int pairwise) 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0; 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: add expiration and limit on number of entries in cache */ 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = os_zalloc(sizeof(*r0)); 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0 == NULL) 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r0->pmk_r0, pmk_r0, PMK_LEN); 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN); 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r0->spa, spa, ETH_ALEN); 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0->pairwise = pairwise; 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0->next = cache->pmk_r0; 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cache->pmk_r0 = r0; 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth, 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r0_name, 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pmk_r0, int *pairwise) 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0; 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = cache->pmk_r0; 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0) { 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0->spa, spa, ETH_ALEN) == 0 && 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN) 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt == 0) { 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pmk_r0, r0->pmk_r0, PMK_LEN); 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pairwise) 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pairwise = r0->pairwise; 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = r0->next; 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth, 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r1, 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pmk_r1_name, int pairwise) 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *r1; 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: add expiration and limit on number of entries in cache */ 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = os_zalloc(sizeof(*r1)); 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r1 == NULL) 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r1->pmk_r1, pmk_r1, PMK_LEN); 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN); 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r1->spa, spa, ETH_ALEN); 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1->pairwise = pairwise; 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1->next = cache->pmk_r1; 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cache->pmk_r1 = r1; 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth, 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r1_name, 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pmk_r1, int *pairwise) 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *r1; 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = cache->pmk_r1; 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1) { 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 && 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN) 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt == 0) { 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pmk_r1, r1->pmk_r1, PMK_LEN); 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pairwise) 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pairwise = r1->pairwise; 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = r1->next; 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_pull_pmk_r1(struct wpa_authenticator *wpa_auth, 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *s1kh_id, const u8 *r0kh_id, 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t r0kh_id_len, const u8 *pmk_r0_name) 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r0kh *r0kh; 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_pull_frame frame, f; 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = wpa_auth->conf.r0kh_list; 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0kh) { 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh->id_len == r0kh_id_len && 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(r0kh->id, r0kh_id, r0kh_id_len) == 0) 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = r0kh->next; 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh == NULL) 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull request to remote R0KH " 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address " MACSTR, MAC2STR(r0kh->addr)); 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&frame, 0, sizeof(frame)); 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.packet_type = FT_PACKET_R0KH_R1KH_PULL; 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.data_length = host_to_le16(FT_R0KH_R1KH_PULL_DATA_LEN); 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN); 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_wrap() does not support inplace encryption, so use a temporary 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(f.nonce, sizeof(f.nonce))) { 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to get random data for " 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "nonce"); 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN); 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN); 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN); 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_wrap(r0kh->key, (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8, 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.nonce, frame.nonce) < 0) 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, r0kh->addr, (u8 *) &frame, sizeof(frame)); 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk, 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ptk *ptk, size_t ptk_len) 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN]; 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1[PMK_LEN]; 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ptk_name[WPA_PMK_NAME_LEN]; 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *mdid = sm->wpa_auth->conf.mobility_domain; 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *r0kh = sm->wpa_auth->conf.r0_key_holder; 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t r0kh_len = sm->wpa_auth->conf.r0_key_holder_len; 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *r1kh = sm->wpa_auth->conf.r1_key_holder; 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ssid = sm->wpa_auth->conf.ssid; 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ssid_len = sm->wpa_auth->conf.ssid_len; 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->xxkey_len == 0) { 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: XXKey not available for key " 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derivation"); 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r0(sm->xxkey, sm->xxkey_len, ssid, ssid_len, mdid, 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh, r0kh_len, sm->addr, pmk_r0, pmk_r0_name); 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, PMK_LEN); 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN); 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_name, 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise); 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, r1kh, sm->addr, 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pmk_r1, sm->pmk_r1_name); 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, PMK_LEN); 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", sm->pmk_r1_name, 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PMK_NAME_LEN); 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1, sm->pmk_r1_name, 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise); 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr, 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->addr, sm->pmk_r1_name, 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) ptk, ptk_len, ptk_name); 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PTK", (u8 *) ptk, ptk_len); 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN); 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic inline int wpa_auth_get_seqnum(struct wpa_authenticator *wpa_auth, 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr, int idx, u8 *seq) 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.get_seqnum == NULL) 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.get_seqnum(wpa_auth->cb.ctx, addr, idx, seq); 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_ft_gtk_subelem(struct wpa_state_machine *sm, size_t *len) 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *subelem; 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_group *gsm = sm->group; 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t subelem_len, pad_len; 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *key; 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t key_len; 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 keybuf[32]; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len = gsm->GTK_len; 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_len > sizeof(keybuf)) 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Pad key for AES Key Wrap if it is not multiple of 8 bytes or is less 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * than 16 bytes. 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pad_len = key_len % 8; 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pad_len) 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pad_len = 8 - pad_len; 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_len + pad_len < 16) 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pad_len += 8; 419a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (pad_len && key_len < sizeof(keybuf)) { 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(keybuf, gsm->GTK[gsm->GN - 1], key_len); 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(keybuf + key_len, 0, pad_len); 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt keybuf[key_len] = 0xdd; 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len += pad_len; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = keybuf; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = gsm->GTK[gsm->GN - 1]; 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Sub-elem ID[1] | Length[1] | Key Info[2] | Key Length[1] | RSC[8] | 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Key[5..32]. 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len = 13 + key_len + 8; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = os_zalloc(subelem_len); 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (subelem == NULL) 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem[0] = FTIE_SUBELEM_GTK; 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem[1] = 11 + key_len + 8; 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Key ID in B0-B1 of Key Info */ 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(&subelem[2], gsm->GN & 0x03); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem[4] = gsm->GTK_len; 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN, subelem + 5); 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_wrap(sm->PTK.kek, key_len / 8, key, subelem + 13)) { 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = subelem_len; 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return subelem; 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_ft_igtk_subelem(struct wpa_state_machine *sm, size_t *len) 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *subelem, *pos; 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_group *gsm = sm->group; 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t subelem_len; 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Sub-elem ID[1] | Length[1] | KeyID[2] | IPN[6] | Key Length[1] | 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Key[16+8] */ 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len = 1 + 1 + 2 + 6 + 1 + WPA_IGTK_LEN + 8; 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = os_zalloc(subelem_len); 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (subelem == NULL) 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = subelem; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FTIE_SUBELEM_IGTK; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = subelem_len - 2; 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, gsm->GN_igtk); 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN_igtk, pos); 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 6; 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WPA_IGTK_LEN; 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_wrap(sm->PTK.kek, WPA_IGTK_LEN / 8, 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt gsm->IGTK[gsm->GN_igtk - 4], pos)) { 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = subelem_len; 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return subelem; 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 48761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidtstatic u8 * wpa_ft_process_rdie(struct wpa_state_machine *sm, 48861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt u8 *pos, u8 *end, u8 id, u8 descr_count, 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies, size_t ies_len) 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ieee802_11_elems parse; 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_rdie *rdie; 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Resource Request: id=%d descr_count=%d", 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id, descr_count); 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Resource descriptor IE(s)", 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies, ies_len); 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < (int) sizeof(*rdie)) { 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "FT: Not enough room for response RDIE"); 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_EID_RIC_DATA; 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = sizeof(*rdie); 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie = (struct rsn_rdie *) pos; 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->id = id; 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->descr_count = 0; 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = host_to_le16(WLAN_STATUS_SUCCESS); 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*rdie); 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ieee802_11_parse_elems((u8 *) ies, ies_len, &parse, 1) == 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ParseFailed) { 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to parse request IEs"); 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef NEED_AP_MLME 52161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (parse.wmm_tspec && sm->wpa_auth->conf.ap_mlme) { 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wmm_tspec_element *tspec; 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.wmm_tspec_len + 2 < (int) sizeof(*tspec)) { 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short WMM TSPEC IE " 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%d)", (int) parse.wmm_tspec_len); 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < (int) sizeof(*tspec)) { 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "FT: Not enough room for " 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "response TSPEC"); 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tspec = (struct wmm_tspec_element *) pos; 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(tspec, parse.wmm_tspec - 2, sizeof(*tspec)); 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wmm_process_tspec(tspec); 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: ADDTS processing result: %d", res); 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == WMM_ADDTS_STATUS_INVALID_PARAMETERS) 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_INVALID_PARAMETERS); 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (res == WMM_ADDTS_STATUS_REFUSED) 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_REQUEST_DECLINED); 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TSPEC accepted; include updated TSPEC in response */ 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->descr_count = 1; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*tspec); 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* NEED_AP_MLME */ 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 55861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (parse.wmm_tspec && !sm->wpa_auth->conf.ap_mlme) { 55961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct wmm_tspec_element *tspec; 56061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt int res; 56161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 56261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt tspec = (struct wmm_tspec_element *) pos; 56361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcpy(tspec, parse.wmm_tspec - 2, sizeof(*tspec)); 56461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt res = wpa_ft_add_tspec(sm->wpa_auth, sm->addr, pos, 56561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt sizeof(*tspec)); 56661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (res >= 0) { 56761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (res) 56861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt rdie->status_code = host_to_le16(res); 56961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt else { 57061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt /* TSPEC accepted; include updated TSPEC in 57161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt * response */ 57261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt rdie->descr_count = 1; 57361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt pos += sizeof(*tspec); 57461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 57561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt return pos; 57661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 57761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 57861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No supported resource requested"); 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 58561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidtstatic u8 * wpa_ft_process_ric(struct wpa_state_machine *sm, u8 *pos, u8 *end, 58661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt const u8 *ric, size_t ric_len) 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *rpos, *start; 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct rsn_rdie *rdie; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RIC Request", ric, ric_len); 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos = ric; 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (rpos + sizeof(*rdie) < ric + ric_len) { 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rpos[0] != WLAN_EID_RIC_DATA || rpos[1] < sizeof(*rdie) || 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos + 2 + rpos[1] > ric + ric_len) 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie = (const struct rsn_rdie *) (rpos + 2); 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos += 2 + rpos[1]; 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt start = rpos; 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (rpos + 2 <= ric + ric_len && 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos + 2 + rpos[1] <= ric + ric_len) { 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rpos[0] == WLAN_EID_RIC_DATA) 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos += 2 + rpos[1]; 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 60861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt pos = wpa_ft_process_rdie(sm, pos, end, rdie->id, 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->descr_count, 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt start, rpos - start); 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtu8 * wpa_sm_write_assoc_resp_ies(struct wpa_state_machine *sm, u8 *pos, 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t max_len, int auth_alg, 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *req_ies, size_t req_ies_len) 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *end, *mdie, *ftie, *rsnie = NULL, *r0kh_id, *subelem = NULL; 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t mdie_len, ftie_len, rsnie_len = 0, r0kh_id_len, subelem_len = 0; 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_auth_config *conf; 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *_ftie; 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_ies parse; 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *ric_start; 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *anonce, *snonce; 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = &sm->wpa_auth->conf; 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->wpa_key_mgmt != WPA_KEY_MGMT_FT_IEEE8021X && 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_key_mgmt != WPA_KEY_MGMT_FT_PSK) 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = pos + max_len; 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) { 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * RSN (only present if this is a Reassociation Response and 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * part of a fast BSS transition) 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_write_rsn_ie(conf, pos, end - pos, sm->pmk_r1_name); 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res < 0) 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsnie = pos; 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsnie_len = res; 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += res; 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Mobility Domain Information */ 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_write_mdie(conf, pos, end - pos); 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res < 0) 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie = pos; 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie_len = res; 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += res; 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fast BSS Transition Information */ 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) { 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = wpa_ft_gtk_subelem(sm, &subelem_len); 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id = sm->r0kh_id; 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id_len = sm->r0kh_id_len; 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt anonce = sm->ANonce; 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt snonce = sm->SNonce; 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->mgmt_frame_prot) { 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *igtk; 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t igtk_len; 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *nbuf; 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt igtk = wpa_ft_igtk_subelem(sm, &igtk_len); 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (igtk == NULL) { 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nbuf = os_realloc(subelem, subelem_len + igtk_len); 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (nbuf == NULL) { 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(igtk); 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = nbuf; 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(subelem + subelem_len, igtk, igtk_len); 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len += igtk_len; 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(igtk); 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id = conf->r0_key_holder; 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id_len = conf->r0_key_holder_len; 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt anonce = NULL; 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt snonce = NULL; 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_write_ftie(conf, r0kh_id, r0kh_id_len, anonce, snonce, pos, 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end - pos, subelem, subelem_len); 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res < 0) 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = pos; 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie_len = res; 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += res; 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(sm->assoc_resp_ftie); 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->assoc_resp_ftie = os_malloc(ftie_len); 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->assoc_resp_ftie) 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->assoc_resp_ftie, ftie, ftie_len); 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie = (struct rsn_ftie *) (ftie + 2); 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie->mic_control[1] = 3; /* Information element count */ 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ric_start = pos; 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_parse_ies(req_ies, req_ies_len, &parse) == 0 && parse.ric) { 71761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt pos = wpa_ft_process_ric(sm, pos, end, parse.ric, 71861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.ric_len); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie->mic_control[1] += 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ieee802_11_ie_count(ric_start, 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos - ric_start); 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ric_start == pos) 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ric_start = NULL; 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT && 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 6, 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie, mdie_len, ftie, ftie_len, 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsnie, rsnie_len, 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ric_start, ric_start ? pos - ric_start : 0, 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie->mic) < 0) 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC"); 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic inline int wpa_auth_set_key(struct wpa_authenticator *wpa_auth, 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int vlan_id, 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wpa_alg alg, const u8 *addr, int idx, 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key, size_t key_len) 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.set_key == NULL) 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.set_key(wpa_auth->cb.ctx, vlan_id, alg, addr, idx, 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key, key_len); 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_install_ptk(struct wpa_state_machine *sm) 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wpa_alg alg; 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int klen; 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* MLME-SETKEYS.request(PTK) */ 7574530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt alg = wpa_cipher_to_alg(sm->pairwise); 7584530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt klen = wpa_cipher_key_len(sm->pairwise); 7594530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (!wpa_cipher_valid_pairwise(sm->pairwise)) { 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unknown pairwise alg 0x%x - skip " 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PTK configuration", sm->pairwise); 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* FIX: add STA entry to kernel/driver here? The set_key will fail 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * most likely without this.. At the moment, STA entry is added only 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * after association has been completed. This function will be called 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * again after association to get the PTK configured, but that could be 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * optimized by adding the STA entry earlier. 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0, 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->PTK.tk1, klen)) 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */ 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise_set = TRUE; 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u16 wpa_ft_process_auth_req(struct wpa_state_machine *sm, 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies, size_t ies_len, 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 **resp_ies, size_t *resp_ies_len) 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_mdie *mdie; 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *ftie; 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN]; 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ptk_name[WPA_PMK_NAME_LEN]; 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_auth_config *conf; 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_ies parse; 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buflen, ptk_len; 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos, *end; 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies_len = 0; 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pmk_r1_name_valid = 0; 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = &sm->wpa_auth->conf; 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received authentication frame IEs", 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies, ies_len); 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) { 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs"); 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie = (struct rsn_mdie *) parse.mdie; 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (mdie == NULL || parse.mdie_len < sizeof(*mdie) || 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(mdie->mobility_domain, 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.mobility_domain, 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MOBILITY_DOMAIN_ID_LEN) != 0) { 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid MDIE"); 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_MDIE; 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct rsn_ftie *) parse.ftie; 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) { 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid FTIE"); 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN); 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r0kh_id == NULL) { 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid FTIE - no R0KH-ID"); 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: STA R0KH-ID", 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.r0kh_id, parse.r0kh_id_len); 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->r0kh_id, parse.r0kh_id, parse.r0kh_id_len); 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->r0kh_id_len = parse.r0kh_id_len; 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn_pmkid == NULL) { 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE"); 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Requested PMKR0Name", 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.rsn_pmkid, WPA_PMK_NAME_LEN); 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1_name(parse.rsn_pmkid, 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.r1_key_holder, sm->addr, 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pmk_r1_name); 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Derived requested PMKR1Name", 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pmk_r1_name, WPA_PMK_NAME_LEN); 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name, pmk_r1, 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &pairwise) < 0) { 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_pull_pmk_r1(sm->wpa_auth, sm->addr, sm->r0kh_id, 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->r0kh_id_len, parse.rsn_pmkid) < 0) { 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Did not have matching " 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R1 and unknown R0KH-ID"); 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TODO: Should return "status pending" (and the caller should 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * not send out response now). The real response will be sent 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * once the response from R0KH is received. 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: Selected PMK-R1", pmk_r1, PMK_LEN); 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pmk_r1_name_valid = 1; 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(sm->ANonce, WPA_NONCE_LEN)) { 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to get random data for " 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ANonce"); 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received SNonce", 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->SNonce, WPA_NONCE_LEN); 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Generated ANonce", 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->ANonce, WPA_NONCE_LEN); 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 88161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt ptk_len = pairwise == WPA_CIPHER_TKIP ? 64 : 48; 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr, 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->addr, pmk_r1_name, 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &sm->PTK, ptk_len, ptk_name); 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PTK", 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &sm->PTK, ptk_len); 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN); 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise = pairwise; 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_install_ptk(sm); 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) + 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2 + FT_R1KH_ID_LEN + 200; 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = os_zalloc(buflen); 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*resp_ies == NULL) { 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = *resp_ies; 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = *resp_ies + buflen; 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_write_rsn_ie(conf, pos, end - pos, parse.rsn_pmkid); 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) { 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(*resp_ies); 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ret; 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_write_mdie(conf, pos, end - pos); 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) { 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(*resp_ies); 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ret; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_write_ftie(conf, parse.r0kh_id, parse.r0kh_id_len, 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->ANonce, sm->SNonce, pos, end - pos, NULL, 0); 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) { 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(*resp_ies); 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ret; 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies_len = pos - *resp_ies; 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_SUCCESS; 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_process_auth(struct wpa_state_machine *sm, const u8 *bssid, 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 auth_transaction, const u8 *ies, size_t ies_len, 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void (*cb)(void *ctx, const u8 *dst, const u8 *bssid, 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 auth_transaction, u16 status, 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies, size_t ies_len), 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void *ctx) 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *resp_ies; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t resp_ies_len; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) { 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received authentication frame, but " 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "WPA SM not available"); 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received authentication frame: STA=" MACSTR 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " BSSID=" MACSTR " transaction=%d", 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(bssid), auth_transaction); 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = wpa_ft_process_auth_req(sm, ies, ies_len, &resp_ies, 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &resp_ies_len); 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: FT authentication response: dst=" MACSTR 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " auth_transaction=%d status=%d", 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), auth_transaction + 1, status); 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len); 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cb(ctx, sm->addr, bssid, auth_transaction + 1, status, 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_ies, resp_ies_len); 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(resp_ies); 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtu16 wpa_ft_validate_reassoc(struct wpa_state_machine *sm, const u8 *ies, 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ies_len) 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_ies parse; 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_mdie *mdie; 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *ftie; 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[16]; 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int count; 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Reassoc Req IEs", ies, ies_len); 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) { 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs"); 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn == NULL) { 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No RSNIE in Reassoc Req"); 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn_pmkid == NULL) { 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE"); 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) != 0) 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMKID in Reassoc Req did not match " 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "with the PMKR1Name derived from auth request"); 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie = (struct rsn_mdie *) parse.mdie; 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (mdie == NULL || parse.mdie_len < sizeof(*mdie) || 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(mdie->mobility_domain, 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.mobility_domain, 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MOBILITY_DOMAIN_ID_LEN) != 0) { 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid MDIE"); 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_MDIE; 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct rsn_ftie *) parse.ftie; 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) { 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid FTIE"); 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(ftie->snonce, sm->SNonce, WPA_NONCE_LEN) != 0) { 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: SNonce mismatch in FTIE"); 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received SNonce", 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->snonce, WPA_NONCE_LEN); 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce", 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->SNonce, WPA_NONCE_LEN); 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(ftie->anonce, sm->ANonce, WPA_NONCE_LEN) != 0) { 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: ANonce mismatch in FTIE"); 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received ANonce", 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->anonce, WPA_NONCE_LEN); 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Expected ANonce", 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->ANonce, WPA_NONCE_LEN); 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r0kh_id == NULL) { 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No R0KH-ID subelem in FTIE"); 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r0kh_id_len != sm->r0kh_id_len || 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(parse.r0kh_id, sm->r0kh_id, parse.r0kh_id_len) != 0) { 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: R0KH-ID in FTIE did not match with " 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "the current R0KH-ID"); 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID in FTIE", 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.r0kh_id, parse.r0kh_id_len); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: The current R0KH-ID", 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->r0kh_id, sm->r0kh_id_len); 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r1kh_id == NULL) { 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No R1KH-ID subelem in FTIE"); 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(parse.r1kh_id, sm->wpa_auth->conf.r1_key_holder, 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt FT_R1KH_ID_LEN) != 0) { 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unknown R1KH-ID used in " 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ReassocReq"); 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: R1KH-ID in FTIE", 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.r1kh_id, FT_R1KH_ID_LEN); 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Expected R1KH-ID", 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN); 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn_pmkid == NULL || 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN)) { 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching PMKR1Name (PMKID) in " 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RSNIE (pmkid=%d)", !!parse.rsn_pmkid); 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count = 3; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.ric) 10771f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt count += ieee802_11_ie_count(parse.ric, parse.ric_len); 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ftie->mic_control[1] != count) { 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unexpected IE count in MIC " 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Control: received %u expected %u", 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->mic_control[1], count); 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 5, 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.mdie - 2, parse.mdie_len + 2, 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.ftie - 2, parse.ftie_len + 2, 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.rsn - 2, parse.rsn_len + 2, 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.ric, parse.ric_len, 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mic) < 0) { 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC"); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(mic, ftie->mic, 16) != 0) { 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid MIC in FTIE"); 109761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: addr=" MACSTR " auth_addr=" MACSTR, 109861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(sm->wpa_auth->addr)); 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC", ftie->mic, 16); 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC", mic, 16); 110161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: MDIE", 110261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.mdie - 2, parse.mdie_len + 2); 110361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: FTIE", 110461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.ftie - 2, parse.ftie_len + 2); 110561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RSN", 110661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.rsn - 2, parse.rsn_len + 2); 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_SUCCESS; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_ft_action_rx(struct wpa_state_machine *sm, const u8 *data, size_t len) 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *sta_addr, *target_ap; 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies; 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ies_len; 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action; 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_rrb_frame *frame; 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6] 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * FT Request action frame body[variable] 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 14) { 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short FT Action frame " 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(len=%lu)", (unsigned long) len); 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt action = data[1]; 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sta_addr = data + 2; 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt target_ap = data + 8; 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies = data + 14; 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies_len = len - 14; 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received FT Action frame (STA=" MACSTR 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " Target AP=" MACSTR " Action=%d)", 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sta_addr), MAC2STR(target_ap), action); 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sta_addr, sm->addr, ETH_ALEN) != 0) { 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Mismatch in FT Action STA address: " 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "STA=" MACSTR " STA-Address=" MACSTR, 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(sta_addr)); 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Do some sanity checking on the target AP address (not own and not 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * broadcast. This could be extended to filter based on a list of known 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * APs in the MD (if such a list were configured). 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((target_ap[0] & 0x01) || 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(target_ap, sm->wpa_auth->addr, ETH_ALEN) == 0) { 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid Target AP in FT Action " 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "frame"); 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Action frame body", ies, ies_len); 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RRB - Forward action frame to the target AP */ 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = os_malloc(sizeof(*frame) + len); 11694b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt if (frame == NULL) 11704b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt return -1; 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->packet_type = FT_PACKET_REQUEST; 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->action_length = host_to_le16(len); 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame->ap_address, sm->wpa_auth->addr, ETH_ALEN); 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame + 1, data, len); 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(sm->wpa_auth, target_ap, (u8 *) frame, 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(*frame) + len); 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(frame); 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_request(struct wpa_authenticator *wpa_auth, 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *current_ap, const u8 *sta_addr, 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *body, size_t len) 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_state_machine *sm; 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *resp_ies, *pos; 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t resp_ies_len, rlen; 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_rrb_frame *frame; 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm = wpa_ft_add_sta(wpa_auth, sta_addr); 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) { 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to add new STA based on " 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RRB Request"); 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RRB Request Frame body", body, len); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = wpa_ft_process_auth_req(sm, body, len, &resp_ies, 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &resp_ies_len); 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB authentication response: STA=" MACSTR 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " CurrentAP=" MACSTR " status=%d", 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(current_ap), status); 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len); 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RRB - Forward action frame response to the Current AP */ 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6] 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Status_Code[2] FT Request action frame body[variable] 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rlen = 2 + 2 * ETH_ALEN + 2 + resp_ies_len; 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = os_malloc(sizeof(*frame) + rlen); 12214b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt if (frame == NULL) 12224b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt return -1; 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->packet_type = FT_PACKET_RESPONSE; 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->action_length = host_to_le16(rlen); 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame->ap_address, wpa_auth->addr, ETH_ALEN); 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (frame + 1); 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_ACTION_FT; 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 2; /* Action: Response */ 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, sta_addr, ETH_ALEN); 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, wpa_auth->addr, ETH_ALEN); 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, status); 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp_ies) { 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, resp_ies, resp_ies_len); 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(resp_ies); 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, current_ap, (u8 *) frame, 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(*frame) + rlen); 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(frame); 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth, 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *src_addr, 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_pull_frame *frame, f; 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r1kh *r1kh; 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_resp_frame resp, r; 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0[PMK_LEN]; 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull"); 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = wpa_auth->conf.r1kh_list; 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1kh) { 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r1kh->addr, src_addr, ETH_ALEN) == 0) 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = r1kh->next; 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r1kh == NULL) { 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching R1KH address found for " 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R1 pull source address " MACSTR, 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_r0kh_r1kh_pull_frame *) data; 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_unwrap() does not support inplace decryption, so use a temporary 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_unwrap(r1kh->key, (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8, 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->nonce, f.nonce) < 0) { 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull " 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "request from " MACSTR, MAC2STR(src_addr)); 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce", 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.nonce, sizeof(f.nonce)); 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR0Name", 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r0_name, WPA_PMK_NAME_LEN); 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR "S1KH-ID=" 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id)); 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&resp, 0, sizeof(resp)); 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp.packet_type = FT_PACKET_R0KH_R1KH_RESP; 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp.data_length = host_to_le16(FT_R0KH_R1KH_RESP_DATA_LEN); 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(resp.ap_address, wpa_auth->addr, ETH_ALEN); 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_wrap() does not support inplace encryption, so use a temporary 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r.nonce, f.nonce, sizeof(f.nonce)); 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r.r1kh_id, f.r1kh_id, FT_R1KH_ID_LEN); 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r.s1kh_id, f.s1kh_id, ETH_ALEN); 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_fetch_pmk_r0(wpa_auth, f.s1kh_id, f.pmk_r0_name, pmk_r0, 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &pairwise) < 0) { 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name found for " 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R1 pull"); 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1(pmk_r0, f.pmk_r0_name, f.r1kh_id, f.s1kh_id, 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r.pmk_r1, r.pmk_r1_name); 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", r.pmk_r1, PMK_LEN); 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", r.pmk_r1_name, 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PMK_NAME_LEN); 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r.pairwise = host_to_le16(pairwise); 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_wrap(r1kh->key, (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8, 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r.nonce, resp.nonce) < 0) { 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(pmk_r0, 0, PMK_LEN); 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(pmk_r0, 0, PMK_LEN); 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, src_addr, (u8 *) &resp, sizeof(resp)); 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth, 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *src_addr, 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_resp_frame *frame, f; 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r0kh *r0kh; 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull response"); 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = wpa_auth->conf.r0kh_list; 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0kh) { 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0) 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = r0kh->next; 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh == NULL) { 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for " 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R0 pull response source address " MACSTR, 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_r0kh_r1kh_resp_frame *) data; 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_unwrap() does not support inplace decryption, so use a temporary 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_unwrap(r0kh->key, (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8, 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->nonce, f.nonce) < 0) { 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull " 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "response from " MACSTR, MAC2STR(src_addr)); 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN) 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt != 0) { 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull response did not use a " 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "matching R1KH-ID"); 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: verify that <nonce,s1kh_id> matches with a pending request 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * and call this requests callback function to finish request 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * processing */ 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise = le_to_host16(f.pairwise); 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce", 13828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.nonce, sizeof(f.nonce)); 13838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR "S1KH-ID=" 13848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR " pairwise=0x%x", 13858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise); 13868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 pull - PMK-R1", 13878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1, PMK_LEN); 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR1Name", 13898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1_name, WPA_PMK_NAME_LEN); 13908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name, 13928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise); 13938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(f.pmk_r1, 0, PMK_LEN); 13948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 13968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth, 14008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *src_addr, 14018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 14028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_push_frame *frame, f; 14048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r0kh *r0kh; 14058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct os_time now; 14068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_time_t tsend; 14078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 14088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 push"); 14108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) 14128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = wpa_auth->conf.r0kh_list; 14158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0kh) { 14168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0) 14178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = r0kh->next; 14198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh == NULL) { 14218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for " 14228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R0 push source address " MACSTR, 14238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 14248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_r0kh_r1kh_push_frame *) data; 14288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_unwrap() does not support inplace decryption, so use a temporary 14298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 14308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_unwrap(r0kh->key, (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8, 14318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->timestamp, f.timestamp) < 0) { 14328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 push from " 14338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(src_addr)); 14348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_get_time(&now); 14388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tsend = WPA_GET_LE32(f.timestamp); 14398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((now.sec > tsend && now.sec - tsend > 60) || 14408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (now.sec < tsend && tsend - now.sec > 60)) { 14418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not have a valid " 14428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "timestamp: sender time %d own time %d\n", 14438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) tsend, (int) now.sec); 14448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(f.r1kh_id, wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN) 14488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt != 0) { 14498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not use a matching " 14508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "R1KH-ID (received " MACSTR " own " MACSTR ")", 14518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(f.r1kh_id), 14528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wpa_auth->conf.r1_key_holder)); 14538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise = le_to_host16(f.pairwise); 14578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - R1KH-ID=" MACSTR " S1KH-ID=" 14588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR " pairwise=0x%x", 14598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise); 14608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 push - PMK-R1", 14618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1, PMK_LEN); 14628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - PMKR1Name", 14638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1_name, WPA_PMK_NAME_LEN); 14648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name, 14668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise); 14678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(f.pmk_r1, 0, PMK_LEN); 14688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 14708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_ft_rrb_rx(struct wpa_authenticator *wpa_auth, const u8 *src_addr, 14748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 14758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_rrb_frame *frame; 14778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 alen; 14788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end, *start; 14798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action; 14808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *sta_addr, *target_ap_addr; 14818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB received frame from remote AP " MACSTR, 14838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 14848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) { 14868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (data_len=%lu)", 14878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) data_len); 14888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = data; 14928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_rrb_frame *) pos; 14938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*frame); 14948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt alen = le_to_host16(frame->action_length); 14968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB frame - frame_type=%d packet_type=%d " 14978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "action_length=%d ap_address=" MACSTR, 14988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->frame_type, frame->packet_type, alen, 14998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(frame->ap_address)); 15008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->frame_type != RSN_REMOTE_FRAME_TYPE_FT_RRB) { 15028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Discard frame per IEEE Std 802.11r-2008, 11A.10.3 */ 15038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with " 15048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "unrecognized type %d", frame->frame_type); 15058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (alen > data_len - sizeof(*frame)) { 15098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB frame too short for action " 15108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "frame"); 15118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_R0KH_R1KH_PULL) 15158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_ft_rrb_rx_pull(wpa_auth, src_addr, data, data_len); 15168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_R0KH_R1KH_RESP) 15178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_ft_rrb_rx_resp(wpa_auth, src_addr, data, data_len); 15188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_R0KH_R1KH_PUSH) 15198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_ft_rrb_rx_push(wpa_auth, src_addr, data, data_len); 15208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RRB - FT Action frame", pos, alen); 15228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (alen < 1 + 1 + 2 * ETH_ALEN) { 15248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (not enough " 15258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "room for Action Frame body); alen=%lu", 15268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) alen); 15278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt start = pos; 15308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = pos + alen; 15318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != WLAN_ACTION_FT) { 15338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unexpected Action frame category " 15348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "%d", *pos); 15358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 15398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt action = *pos++; 15408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sta_addr = pos; 15418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 15428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt target_ap_addr = pos; 15438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 15448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB Action Frame: action=%d sta_addr=" 15458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR " target_ap_addr=" MACSTR, 15468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt action, MAC2STR(sta_addr), MAC2STR(target_ap_addr)); 15478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_REQUEST) { 15498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Request"); 15508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (action != 1) { 15528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unexpected Action %d in " 15538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RRB Request", action); 15548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(target_ap_addr, wpa_auth->addr, ETH_ALEN) != 0) { 15588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Target AP address in the " 15598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RRB Request does not match with own " 15608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address"); 15618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_rrb_rx_request(wpa_auth, frame->ap_address, 15658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sta_addr, pos, end - pos) < 0) 15668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (frame->packet_type == FT_PACKET_RESPONSE) { 15688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status_code; 15698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < 2) { 15718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Not enough room for status " 15728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "code in RRB Response"); 15738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status_code = WPA_GET_LE16(pos); 15768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 15778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Response " 15798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(status_code=%d)", status_code); 15808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_action_send(wpa_auth, sta_addr, start, alen) < 0) 15828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 15848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with unknown " 15858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "packet_type %d", frame->packet_type); 15868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 15908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 15918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth, 15948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *pmk_r0, 15958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r1kh *r1kh, 15968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *s1kh_id, int pairwise) 15978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 15988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_push_frame frame, f; 15998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct os_time now; 16008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&frame, 0, sizeof(frame)); 16028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 16038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.packet_type = FT_PACKET_R0KH_R1KH_PUSH; 16048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.data_length = host_to_le16(FT_R0KH_R1KH_PUSH_DATA_LEN); 16058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN); 16068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_wrap() does not support inplace encryption, so use a temporary 16088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 16098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.r1kh_id, r1kh->id, FT_R1KH_ID_LEN); 16108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN); 16118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.pmk_r0_name, pmk_r0->pmk_r0_name, WPA_PMK_NAME_LEN); 16128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1(pmk_r0->pmk_r0, pmk_r0->pmk_r0_name, r1kh->id, 16138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt s1kh_id, f.pmk_r1, f.pmk_r1_name); 16148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: R1KH-ID " MACSTR, MAC2STR(r1kh->id)); 16158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f.pmk_r1, PMK_LEN); 16168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", f.pmk_r1_name, 16178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PMK_NAME_LEN); 16188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_get_time(&now); 16198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE32(f.timestamp, now.sec); 16208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pairwise = host_to_le16(pairwise); 16218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (aes_wrap(r1kh->key, (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8, 16228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.timestamp, frame.timestamp) < 0) 16238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 16248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, r1kh->addr, (u8 *) &frame, sizeof(frame)); 16268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 16278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr) 16308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 16318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0; 16328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r1kh *r1kh; 16338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_auth->conf.pmk_r1_push) 16358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 16368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = wpa_auth->ft_pmk_cache->pmk_r0; 16388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0) { 16398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0->spa, addr, ETH_ALEN) == 0) 16408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 16418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = r0->next; 16428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0 == NULL || r0->pmk_r1_pushed) 16458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 16468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0->pmk_r1_pushed = 1; 16478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Deriving and pushing PMK-R1 keys to R1KHs " 16498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for STA " MACSTR, MAC2STR(addr)); 16508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = wpa_auth->conf.r1kh_list; 16528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1kh) { 16538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr, r0->pairwise); 16548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = r1kh->next; 16558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 16578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211R */ 1659