18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * hostapd - IEEE 802.11r - Fast BSS Transition 3d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt * Copyright (c) 2004-2014, 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" 12d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt#include "utils/eloop.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_defs.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common/ieee802_11_common.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/aes_wrap.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/random.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "ap_config.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "ieee802_11.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wmm.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa_auth.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wpa_auth_i.h" 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211R 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 26d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic int wpa_ft_send_rrb_auth_resp(struct wpa_state_machine *sm, 27d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt const u8 *current_ap, const u8 *sta_addr, 28d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u16 status, const u8 *resp_ies, 29d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt size_t resp_ies_len); 30d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 31d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_send(struct wpa_authenticator *wpa_auth, const u8 *dst, 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.send_ether == NULL) 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB send to " MACSTR, MAC2STR(dst)); 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.send_ether(wpa_auth->cb.ctx, dst, ETH_P_RRB, 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, data_len); 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_action_send(struct wpa_authenticator *wpa_auth, 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *dst, const u8 *data, size_t data_len) 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.send_ft_action == NULL) 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.send_ft_action(wpa_auth->cb.ctx, dst, 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data, data_len); 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpa_state_machine * 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtwpa_ft_add_sta(struct wpa_authenticator *wpa_auth, const u8 *sta_addr) 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.add_sta == NULL) 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.add_sta(wpa_auth->cb.ctx, sta_addr); 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidtstatic int wpa_ft_add_tspec(struct wpa_authenticator *wpa_auth, 6361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt const u8 *sta_addr, 6461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt u8 *tspec_ie, size_t tspec_ielen) 6561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt{ 6661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (wpa_auth->cb.add_tspec == NULL) { 67fb79edc9df1f20461e90e478363d207348213d35Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: add_tspec is not initialized"); 6861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt return -1; 6961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 7061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt return wpa_auth->cb.add_tspec(wpa_auth->cb.ctx, sta_addr, tspec_ie, 7161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt tspec_ielen); 7261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt} 7361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 7461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len) 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos = buf; 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 capab; 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 2 + sizeof(struct rsn_mdie)) 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_EID_MOBILITY_DOMAIN; 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = MOBILITY_DOMAIN_ID_LEN + 1; 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, conf->mobility_domain, MOBILITY_DOMAIN_ID_LEN); 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += MOBILITY_DOMAIN_ID_LEN; 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab = 0; 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (conf->ft_over_ds) 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt capab |= RSN_FT_CAPAB_FT_OVER_DS; 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = capab; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos - buf; 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id, 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t r0kh_id_len, 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *anonce, const u8 *snonce, 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *buf, size_t len, const u8 *subelem, 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t subelem_len) 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos = buf, *ielen; 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *hdr; 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 2 + sizeof(*hdr) + 2 + FT_R1KH_ID_LEN + 2 + r0kh_id_len + 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len) 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_EID_FAST_BSS_TRANSITION; 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ielen = pos++; 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct rsn_ftie *) pos; 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(hdr, 0, sizeof(*hdr)); 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*hdr); 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(hdr->mic_control, 0); 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (anonce) 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(hdr->anonce, anonce, WPA_NONCE_LEN); 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (snonce) 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(hdr->snonce, snonce, WPA_NONCE_LEN); 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Optional Parameters */ 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FTIE_SUBELEM_R1KH_ID; 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FT_R1KH_ID_LEN; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, conf->r1_key_holder, FT_R1KH_ID_LEN); 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += FT_R1KH_ID_LEN; 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh_id) { 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FTIE_SUBELEM_R0KH_ID; 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = r0kh_id_len; 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, r0kh_id, r0kh_id_len); 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += r0kh_id_len; 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (subelem) { 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, subelem, subelem_len); 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += subelem_len; 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *ielen = pos - buf - 2; 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos - buf; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_r0_sa { 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *next; 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0[PMK_LEN]; 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 spa[ETH_ALEN]; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */ 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pmk_r1_pushed; 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_r1_sa { 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *next; 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1[PMK_LEN]; 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 spa[ETH_ALEN]; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: expiration, identity, radius_class, EAP type, VLAN ID */ 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_cache { 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *pmk_r0; 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *pmk_r1; 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void) 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache; 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cache = os_zalloc(sizeof(*cache)); 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return cache; 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache) 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0, *r0prev; 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *r1, *r1prev; 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = cache->pmk_r0; 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0) { 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0prev = r0; 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = r0->next; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(r0prev->pmk_r0, 0, PMK_LEN); 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(r0prev); 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = cache->pmk_r1; 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1) { 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1prev = r1; 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = r1->next; 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(r1prev->pmk_r1, 0, PMK_LEN); 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(r1prev); 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(cache); 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth, 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r0, 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pmk_r0_name, int pairwise) 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0; 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: add expiration and limit on number of entries in cache */ 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = os_zalloc(sizeof(*r0)); 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0 == NULL) 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r0->pmk_r0, pmk_r0, PMK_LEN); 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r0->pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN); 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r0->spa, spa, ETH_ALEN); 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0->pairwise = pairwise; 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0->next = cache->pmk_r0; 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cache->pmk_r0 = r0; 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth, 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r0_name, 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pmk_r0, int *pairwise) 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = cache->pmk_r0; 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0) { 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0->spa, spa, ETH_ALEN) == 0 && 238c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt os_memcmp_const(r0->pmk_r0_name, pmk_r0_name, 239c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt WPA_PMK_NAME_LEN) == 0) { 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pmk_r0, r0->pmk_r0, PMK_LEN); 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pairwise) 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pairwise = r0->pairwise; 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = r0->next; 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth, 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r1, 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pmk_r1_name, int pairwise) 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *r1; 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TODO: add expiration and limit on number of entries in cache */ 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = os_zalloc(sizeof(*r1)); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r1 == NULL) 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r1->pmk_r1, pmk_r1, PMK_LEN); 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r1->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN); 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r1->spa, spa, ETH_ALEN); 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1->pairwise = pairwise; 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1->next = cache->pmk_r1; 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cache->pmk_r1 = r1; 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth, 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *spa, const u8 *pmk_r1_name, 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pmk_r1, int *pairwise) 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache; 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r1_sa *r1; 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = cache->pmk_r1; 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1) { 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 && 288c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt os_memcmp_const(r1->pmk_r1_name, pmk_r1_name, 289c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt WPA_PMK_NAME_LEN) == 0) { 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pmk_r1, r1->pmk_r1, PMK_LEN); 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pairwise) 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pairwise = r1->pairwise; 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1 = r1->next; 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 303d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic int wpa_ft_pull_pmk_r1(struct wpa_state_machine *sm, 304d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt const u8 *ies, size_t ies_len, 305d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt const u8 *pmk_r0_name) 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r0kh *r0kh; 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_pull_frame frame, f; 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 310d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt r0kh = sm->wpa_auth->conf.r0kh_list; 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0kh) { 312d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (r0kh->id_len == sm->r0kh_id_len && 313c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt os_memcmp_const(r0kh->id, sm->r0kh_id, sm->r0kh_id_len) == 314c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt 0) 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = r0kh->next; 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 318d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (r0kh == NULL) { 319d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Did not find R0KH-ID", 320d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->r0kh_id, sm->r0kh_id_len); 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 322d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt } 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Send PMK-R1 pull request to remote R0KH " 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address " MACSTR, MAC2STR(r0kh->addr)); 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&frame, 0, sizeof(frame)); 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.packet_type = FT_PACKET_R0KH_R1KH_PULL; 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.data_length = host_to_le16(FT_R0KH_R1KH_PULL_DATA_LEN); 331d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_memcpy(frame.ap_address, sm->wpa_auth->addr, ETH_ALEN); 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_wrap() does not support inplace encryption, so use a temporary 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 335d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (random_get_bytes(f.nonce, FT_R0KH_R1KH_PULL_NONCE_LEN)) { 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to get random data for " 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "nonce"); 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 340d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_memcpy(sm->ft_pending_pull_nonce, f.nonce, 341d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt FT_R0KH_R1KH_PULL_NONCE_LEN); 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.pmk_r0_name, pmk_r0_name, WPA_PMK_NAME_LEN); 343d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_memcpy(f.r1kh_id, sm->wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN); 344d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_memcpy(f.s1kh_id, sm->addr, ETH_ALEN); 345b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt os_memset(f.pad, 0, sizeof(f.pad)); 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3479ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_wrap(r0kh->key, sizeof(r0kh->key), 3489ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8, 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.nonce, frame.nonce) < 0) 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 352d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpabuf_free(sm->ft_pending_req_ies); 353d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_req_ies = wpabuf_alloc_copy(ies, ies_len); 354d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (sm->ft_pending_req_ies == NULL) 355d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return -1; 356d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 357d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_ft_rrb_send(sm->wpa_auth, r0kh->addr, (u8 *) &frame, sizeof(frame)); 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk, 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ptk *ptk, size_t ptk_len) 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN]; 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1[PMK_LEN]; 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ptk_name[WPA_PMK_NAME_LEN]; 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *mdid = sm->wpa_auth->conf.mobility_domain; 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *r0kh = sm->wpa_auth->conf.r0_key_holder; 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t r0kh_len = sm->wpa_auth->conf.r0_key_holder_len; 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *r1kh = sm->wpa_auth->conf.r1_key_holder; 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ssid = sm->wpa_auth->conf.ssid; 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ssid_len = sm->wpa_auth->conf.ssid_len; 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->xxkey_len == 0) { 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: XXKey not available for key " 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derivation"); 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r0(sm->xxkey, sm->xxkey_len, ssid, ssid_len, mdid, 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh, r0kh_len, sm->addr, pmk_r0, pmk_r0_name); 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R0", pmk_r0, PMK_LEN); 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR0Name", pmk_r0_name, WPA_PMK_NAME_LEN); 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0, pmk_r0_name, 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise); 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, r1kh, sm->addr, 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pmk_r1, sm->pmk_r1_name); 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", pmk_r1, PMK_LEN); 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", sm->pmk_r1_name, 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PMK_NAME_LEN); 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1, sm->pmk_r1_name, 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise); 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr, 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->addr, sm->pmk_r1_name, 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) ptk, ptk_len, ptk_name); 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PTK", (u8 *) ptk, ptk_len); 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN); 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic inline int wpa_auth_get_seqnum(struct wpa_authenticator *wpa_auth, 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr, int idx, u8 *seq) 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.get_seqnum == NULL) 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.get_seqnum(wpa_auth->cb.ctx, addr, idx, seq); 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_ft_gtk_subelem(struct wpa_state_machine *sm, size_t *len) 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *subelem; 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_group *gsm = sm->group; 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t subelem_len, pad_len; 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *key; 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t key_len; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 keybuf[32]; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len = gsm->GTK_len; 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_len > sizeof(keybuf)) 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Pad key for AES Key Wrap if it is not multiple of 8 bytes or is less 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * than 16 bytes. 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pad_len = key_len % 8; 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pad_len) 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pad_len = 8 - pad_len; 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_len + pad_len < 16) 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pad_len += 8; 439a54fa5fb807eaeff45464139b5a7759f060cec68Dmitry Shmidt if (pad_len && key_len < sizeof(keybuf)) { 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(keybuf, gsm->GTK[gsm->GN - 1], key_len); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(keybuf + key_len, 0, pad_len); 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt keybuf[key_len] = 0xdd; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len += pad_len; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = keybuf; 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = gsm->GTK[gsm->GN - 1]; 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Sub-elem ID[1] | Length[1] | Key Info[2] | Key Length[1] | RSC[8] | 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Key[5..32]. 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len = 13 + key_len + 8; 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = os_zalloc(subelem_len); 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (subelem == NULL) 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem[0] = FTIE_SUBELEM_GTK; 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem[1] = 11 + key_len + 8; 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Key ID in B0-B1 of Key Info */ 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(&subelem[2], gsm->GN & 0x03); 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem[4] = gsm->GTK_len; 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN, subelem + 5); 4639ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_wrap(sm->PTK.kek, 16, key_len / 8, key, subelem + 13)) { 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = subelem_len; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return subelem; 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * wpa_ft_igtk_subelem(struct wpa_state_machine *sm, size_t *len) 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *subelem, *pos; 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_group *gsm = sm->group; 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t subelem_len; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Sub-elem ID[1] | Length[1] | KeyID[2] | IPN[6] | Key Length[1] | 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Key[16+8] */ 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len = 1 + 1 + 2 + 6 + 1 + WPA_IGTK_LEN + 8; 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = os_zalloc(subelem_len); 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (subelem == NULL) 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = subelem; 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = FTIE_SUBELEM_IGTK; 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = subelem_len - 2; 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, gsm->GN_igtk); 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_auth_get_seqnum(sm->wpa_auth, NULL, gsm->GN_igtk, pos); 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 6; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WPA_IGTK_LEN; 4959ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_wrap(sm->PTK.kek, 16, WPA_IGTK_LEN / 8, 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt gsm->IGTK[gsm->GN_igtk - 4], pos)) { 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = subelem_len; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return subelem; 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 50761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidtstatic u8 * wpa_ft_process_rdie(struct wpa_state_machine *sm, 50861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt u8 *pos, u8 *end, u8 id, u8 descr_count, 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies, size_t ies_len) 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ieee802_11_elems parse; 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_rdie *rdie; 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Resource Request: id=%d descr_count=%d", 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id, descr_count); 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Resource descriptor IE(s)", 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies, ies_len); 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < (int) sizeof(*rdie)) { 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "FT: Not enough room for response RDIE"); 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_EID_RIC_DATA; 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = sizeof(*rdie); 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie = (struct rsn_rdie *) pos; 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->id = id; 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->descr_count = 0; 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = host_to_le16(WLAN_STATUS_SUCCESS); 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*rdie); 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ieee802_11_parse_elems((u8 *) ies, ies_len, &parse, 1) == 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ParseFailed) { 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to parse request IEs"); 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef NEED_AP_MLME 54161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (parse.wmm_tspec && sm->wpa_auth->conf.ap_mlme) { 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wmm_tspec_element *tspec; 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.wmm_tspec_len + 2 < (int) sizeof(*tspec)) { 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short WMM TSPEC IE " 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%d)", (int) parse.wmm_tspec_len); 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < (int) sizeof(*tspec)) { 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "FT: Not enough room for " 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "response TSPEC"); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tspec = (struct wmm_tspec_element *) pos; 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(tspec, parse.wmm_tspec - 2, sizeof(*tspec)); 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wmm_process_tspec(tspec); 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: ADDTS processing result: %d", res); 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == WMM_ADDTS_STATUS_INVALID_PARAMETERS) 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_INVALID_PARAMETERS); 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (res == WMM_ADDTS_STATUS_REFUSED) 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_le16(WLAN_STATUS_REQUEST_DECLINED); 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* TSPEC accepted; include updated TSPEC in response */ 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->descr_count = 1; 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*tspec); 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* NEED_AP_MLME */ 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 57861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (parse.wmm_tspec && !sm->wpa_auth->conf.ap_mlme) { 57961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt struct wmm_tspec_element *tspec; 58061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt int res; 58161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 58261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt tspec = (struct wmm_tspec_element *) pos; 58361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcpy(tspec, parse.wmm_tspec - 2, sizeof(*tspec)); 58461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt res = wpa_ft_add_tspec(sm->wpa_auth, sm->addr, pos, 58561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt sizeof(*tspec)); 58661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (res >= 0) { 58761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt if (res) 58861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt rdie->status_code = host_to_le16(res); 58961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt else { 59061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt /* TSPEC accepted; include updated TSPEC in 59161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt * response */ 592fb79edc9df1f20461e90e478363d207348213d35Dmitry Shmidt rdie->descr_count = 1; 593fb79edc9df1f20461e90e478363d207348213d35Dmitry Shmidt pos += sizeof(*tspec); 59461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 59561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt return pos; 59661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 59761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt } 59861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No supported resource requested"); 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->status_code = host_to_le16(WLAN_STATUS_UNSPECIFIED_FAILURE); 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 60561d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidtstatic u8 * wpa_ft_process_ric(struct wpa_state_machine *sm, u8 *pos, u8 *end, 60661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt const u8 *ric, size_t ric_len) 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *rpos, *start; 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct rsn_rdie *rdie; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RIC Request", ric, ric_len); 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos = ric; 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (rpos + sizeof(*rdie) < ric + ric_len) { 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rpos[0] != WLAN_EID_RIC_DATA || rpos[1] < sizeof(*rdie) || 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos + 2 + rpos[1] > ric + ric_len) 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie = (const struct rsn_rdie *) (rpos + 2); 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos += 2 + rpos[1]; 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt start = rpos; 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (rpos + 2 <= ric + ric_len && 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos + 2 + rpos[1] <= ric + ric_len) { 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (rpos[0] == WLAN_EID_RIC_DATA) 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rpos += 2 + rpos[1]; 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 62861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt pos = wpa_ft_process_rdie(sm, pos, end, rdie->id, 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rdie->descr_count, 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt start, rpos - start); 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtu8 * wpa_sm_write_assoc_resp_ies(struct wpa_state_machine *sm, u8 *pos, 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t max_len, int auth_alg, 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *req_ies, size_t req_ies_len) 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *end, *mdie, *ftie, *rsnie = NULL, *r0kh_id, *subelem = NULL; 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t mdie_len, ftie_len, rsnie_len = 0, r0kh_id_len, subelem_len = 0; 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_auth_config *conf; 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *_ftie; 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_ies parse; 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *ric_start; 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *anonce, *snonce; 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = &sm->wpa_auth->conf; 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 655fb79edc9df1f20461e90e478363d207348213d35Dmitry Shmidt if (!wpa_key_mgmt_ft(sm->wpa_key_mgmt)) 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = pos + max_len; 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) { 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * RSN (only present if this is a Reassociation Response and 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * part of a fast BSS transition) 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_write_rsn_ie(conf, pos, end - pos, sm->pmk_r1_name); 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res < 0) 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsnie = pos; 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsnie_len = res; 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += res; 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Mobility Domain Information */ 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_write_mdie(conf, pos, end - pos); 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res < 0) 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie = pos; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie_len = res; 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += res; 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fast BSS Transition Information */ 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) { 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = wpa_ft_gtk_subelem(sm, &subelem_len); 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id = sm->r0kh_id; 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id_len = sm->r0kh_id_len; 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt anonce = sm->ANonce; 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt snonce = sm->SNonce; 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_IEEE80211W 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->mgmt_frame_prot) { 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *igtk; 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t igtk_len; 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *nbuf; 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt igtk = wpa_ft_igtk_subelem(sm, &igtk_len); 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (igtk == NULL) { 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nbuf = os_realloc(subelem, subelem_len + igtk_len); 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (nbuf == NULL) { 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(igtk); 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem = nbuf; 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(subelem + subelem_len, igtk, igtk_len); 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt subelem_len += igtk_len; 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(igtk); 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211W */ 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id = conf->r0_key_holder; 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh_id_len = conf->r0_key_holder_len; 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt anonce = NULL; 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt snonce = NULL; 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wpa_write_ftie(conf, r0kh_id, r0kh_id_len, anonce, snonce, pos, 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end - pos, subelem, subelem_len); 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(subelem); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res < 0) 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = pos; 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie_len = res; 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += res; 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(sm->assoc_resp_ftie); 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->assoc_resp_ftie = os_malloc(ftie_len); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->assoc_resp_ftie) 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->assoc_resp_ftie, ftie, ftie_len); 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie = (struct rsn_ftie *) (ftie + 2); 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie->mic_control[1] = 3; /* Information element count */ 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ric_start = pos; 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_parse_ies(req_ies, req_ies_len, &parse) == 0 && parse.ric) { 73661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt pos = wpa_ft_process_ric(sm, pos, end, parse.ric, 73761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.ric_len); 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT) 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie->mic_control[1] += 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ieee802_11_ie_count(ric_start, 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos - ric_start); 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ric_start == pos) 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ric_start = NULL; 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (auth_alg == WLAN_AUTH_FT && 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 6, 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie, mdie_len, ftie, ftie_len, 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rsnie, rsnie_len, 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ric_start, ric_start ? pos - ric_start : 0, 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt _ftie->mic) < 0) 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC"); 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return pos; 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic inline int wpa_auth_set_key(struct wpa_authenticator *wpa_auth, 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int vlan_id, 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wpa_alg alg, const u8 *addr, int idx, 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key, size_t key_len) 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth->cb.set_key == NULL) 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_auth->cb.set_key(wpa_auth->cb.ctx, vlan_id, alg, addr, idx, 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key, key_len); 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_install_ptk(struct wpa_state_machine *sm) 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wpa_alg alg; 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int klen; 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* MLME-SETKEYS.request(PTK) */ 7764530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt alg = wpa_cipher_to_alg(sm->pairwise); 7774530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt klen = wpa_cipher_key_len(sm->pairwise); 7784530cfd4d14a77c58e35393b91e40f8dd9d62697Dmitry Shmidt if (!wpa_cipher_valid_pairwise(sm->pairwise)) { 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unknown pairwise alg 0x%x - skip " 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PTK configuration", sm->pairwise); 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* FIX: add STA entry to kernel/driver here? The set_key will fail 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * most likely without this.. At the moment, STA entry is added only 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * after association has been completed. This function will be called 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * again after association to get the PTK configured, but that could be 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * optimized by adding the STA entry earlier. 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_auth_set_key(sm->wpa_auth, 0, alg, sm->addr, 0, 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->PTK.tk1, klen)) 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* FIX: MLME-SetProtection.Request(TA, Tx_Rx) */ 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise_set = TRUE; 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 799d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic int wpa_ft_process_auth_req(struct wpa_state_machine *sm, 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies, size_t ies_len, 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 **resp_ies, size_t *resp_ies_len) 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_mdie *mdie; 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *ftie; 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r1[PMK_LEN], pmk_r1_name[WPA_PMK_NAME_LEN]; 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ptk_name[WPA_PMK_NAME_LEN]; 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_auth_config *conf; 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_ies parse; 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buflen, ptk_len; 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos, *end; 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies_len = 0; 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pmk_r1_name_valid = 0; 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt conf = &sm->wpa_auth->conf; 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received authentication frame IEs", 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies, ies_len); 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) { 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs"); 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie = (struct rsn_mdie *) parse.mdie; 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (mdie == NULL || parse.mdie_len < sizeof(*mdie) || 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(mdie->mobility_domain, 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.mobility_domain, 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MOBILITY_DOMAIN_ID_LEN) != 0) { 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid MDIE"); 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_MDIE; 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct rsn_ftie *) parse.ftie; 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) { 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid FTIE"); 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->SNonce, ftie->snonce, WPA_NONCE_LEN); 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r0kh_id == NULL) { 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid FTIE - no R0KH-ID"); 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: STA R0KH-ID", 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.r0kh_id, parse.r0kh_id_len); 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->r0kh_id, parse.r0kh_id, parse.r0kh_id_len); 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->r0kh_id_len = parse.r0kh_id_len; 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn_pmkid == NULL) { 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE"); 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Requested PMKR0Name", 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.rsn_pmkid, WPA_PMK_NAME_LEN); 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1_name(parse.rsn_pmkid, 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.r1_key_holder, sm->addr, 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pmk_r1_name); 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Derived requested PMKR1Name", 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pmk_r1_name, WPA_PMK_NAME_LEN); 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name, pmk_r1, 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &pairwise) < 0) { 870d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (wpa_ft_pull_pmk_r1(sm, ies, ies_len, parse.rsn_pmkid) < 0) { 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Did not have matching " 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R1 and unknown R0KH-ID"); 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 876d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return -1; /* Status pending */ 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: Selected PMK-R1", pmk_r1, PMK_LEN); 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pmk_r1_name_valid = 1; 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(sm->pmk_r1_name, pmk_r1_name, WPA_PMK_NAME_LEN); 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(sm->ANonce, WPA_NONCE_LEN)) { 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to get random data for " 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ANonce"); 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received SNonce", 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->SNonce, WPA_NONCE_LEN); 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Generated ANonce", 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->ANonce, WPA_NONCE_LEN); 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 89461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt ptk_len = pairwise == WPA_CIPHER_TKIP ? 64 : 48; 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr, 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->addr, pmk_r1_name, 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &sm->PTK, ptk_len, ptk_name); 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PTK", 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) &sm->PTK, ptk_len); 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PTKName", ptk_name, WPA_PMK_NAME_LEN); 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->pairwise = pairwise; 903717574375e969e8272c6d1a26137286eac158abbDmitry Shmidt sm->PTK_valid = TRUE; 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_install_ptk(sm); 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) + 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2 + FT_R1KH_ID_LEN + 200; 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = os_zalloc(buflen); 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*resp_ies == NULL) { 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = *resp_ies; 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = *resp_ies + buflen; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_write_rsn_ie(conf, pos, end - pos, parse.rsn_pmkid); 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) { 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(*resp_ies); 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ret; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_write_mdie(conf, pos, end - pos); 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) { 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(*resp_ies); 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ret; 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wpa_write_ftie(conf, parse.r0kh_id, parse.r0kh_id_len, 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->ANonce, sm->SNonce, pos, end - pos, NULL, 0); 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0) { 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(*resp_ies); 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies = NULL; 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ret; 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp_ies_len = pos - *resp_ies; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_SUCCESS; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_process_auth(struct wpa_state_machine *sm, const u8 *bssid, 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 auth_transaction, const u8 *ies, size_t ies_len, 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void (*cb)(void *ctx, const u8 *dst, const u8 *bssid, 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 auth_transaction, u16 status, 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies, size_t ies_len), 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void *ctx) 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *resp_ies; 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t resp_ies_len; 957d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt int res; 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) { 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received authentication frame, but " 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "WPA SM not available"); 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received authentication frame: STA=" MACSTR 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " BSSID=" MACSTR " transaction=%d", 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(bssid), auth_transaction); 968d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_cb = cb; 969d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_cb_ctx = ctx; 970d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_auth_transaction = auth_transaction; 971d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt res = wpa_ft_process_auth_req(sm, ies, ies_len, &resp_ies, 972d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt &resp_ies_len); 973d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (res < 0) { 974d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Callback postponed until response is available"); 975d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return; 976d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt } 977d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt status = res; 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: FT authentication response: dst=" MACSTR 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " auth_transaction=%d status=%d", 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), auth_transaction + 1, status); 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len); 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cb(ctx, sm->addr, bssid, auth_transaction + 1, status, 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_ies, resp_ies_len); 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(resp_ies); 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtu16 wpa_ft_validate_reassoc(struct wpa_state_machine *sm, const u8 *ies, 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ies_len) 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_ies parse; 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_mdie *mdie; 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct rsn_ftie *ftie; 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 mic[16]; 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt unsigned int count; 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Reassoc Req IEs", ies, ies_len); 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_parse_ies(ies, ies_len, &parse) < 0) { 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to parse FT IEs"); 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn == NULL) { 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No RSNIE in Reassoc Req"); 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn_pmkid == NULL) { 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No PMKID in RSNIE"); 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1018c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) 1019c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt != 0) { 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMKID in Reassoc Req did not match " 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "with the PMKR1Name derived from auth request"); 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_PMKID; 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mdie = (struct rsn_mdie *) parse.mdie; 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (mdie == NULL || parse.mdie_len < sizeof(*mdie) || 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(mdie->mobility_domain, 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.mobility_domain, 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MOBILITY_DOMAIN_ID_LEN) != 0) { 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid MDIE"); 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_MDIE; 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie = (struct rsn_ftie *) parse.ftie; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ftie == NULL || parse.ftie_len < sizeof(*ftie)) { 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid FTIE"); 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(ftie->snonce, sm->SNonce, WPA_NONCE_LEN) != 0) { 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: SNonce mismatch in FTIE"); 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received SNonce", 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->snonce, WPA_NONCE_LEN); 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce", 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->SNonce, WPA_NONCE_LEN); 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(ftie->anonce, sm->ANonce, WPA_NONCE_LEN) != 0) { 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: ANonce mismatch in FTIE"); 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Received ANonce", 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->anonce, WPA_NONCE_LEN); 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Expected ANonce", 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->ANonce, WPA_NONCE_LEN); 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r0kh_id == NULL) { 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No R0KH-ID subelem in FTIE"); 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r0kh_id_len != sm->r0kh_id_len || 1065c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt os_memcmp_const(parse.r0kh_id, sm->r0kh_id, parse.r0kh_id_len) != 0) 1066c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt { 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: R0KH-ID in FTIE did not match with " 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "the current R0KH-ID"); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID in FTIE", 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.r0kh_id, parse.r0kh_id_len); 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: The current R0KH-ID", 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->r0kh_id, sm->r0kh_id_len); 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.r1kh_id == NULL) { 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No R1KH-ID subelem in FTIE"); 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1081c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(parse.r1kh_id, sm->wpa_auth->conf.r1_key_holder, 1082c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt FT_R1KH_ID_LEN) != 0) { 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unknown R1KH-ID used in " 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ReassocReq"); 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: R1KH-ID in FTIE", 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.r1kh_id, FT_R1KH_ID_LEN); 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Expected R1KH-ID", 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->wpa_auth->conf.r1_key_holder, FT_R1KH_ID_LEN); 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.rsn_pmkid == NULL || 1093c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt os_memcmp_const(parse.rsn_pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN)) 1094c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt { 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching PMKR1Name (PMKID) in " 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RSNIE (pmkid=%d)", !!parse.rsn_pmkid); 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt count = 3; 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (parse.ric) 11021f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt count += ieee802_11_ie_count(parse.ric, parse.ric_len); 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ftie->mic_control[1] != count) { 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unexpected IE count in MIC " 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Control: received %u expected %u", 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ftie->mic_control[1], count); 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_mic(sm->PTK.kck, sm->addr, sm->wpa_auth->addr, 5, 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.mdie - 2, parse.mdie_len + 2, 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.ftie - 2, parse.ftie_len + 2, 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.rsn - 2, parse.rsn_len + 2, 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt parse.ric, parse.ric_len, 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mic) < 0) { 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to calculate MIC"); 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_UNSPECIFIED_FAILURE; 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1120c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(mic, ftie->mic, 16) != 0) { 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid MIC in FTIE"); 112261d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: addr=" MACSTR " auth_addr=" MACSTR, 112361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(sm->wpa_auth->addr)); 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC", ftie->mic, 16); 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC", mic, 16); 112661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: MDIE", 112761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.mdie - 2, parse.mdie_len + 2); 112861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: FTIE", 112961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.ftie - 2, parse.ftie_len + 2); 113061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RSN", 113161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt parse.rsn - 2, parse.rsn_len + 2); 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_INVALID_FTIE; 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WLAN_STATUS_SUCCESS; 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_ft_action_rx(struct wpa_state_machine *sm, const u8 *data, size_t len) 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *sta_addr, *target_ap; 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *ies; 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t ies_len; 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action; 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_rrb_frame *frame; 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6] 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * FT Request action frame body[variable] 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < 14) { 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short FT Action frame " 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(len=%lu)", (unsigned long) len); 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt action = data[1]; 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sta_addr = data + 2; 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt target_ap = data + 8; 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies = data + 14; 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ies_len = len - 14; 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received FT Action frame (STA=" MACSTR 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " Target AP=" MACSTR " Action=%d)", 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sta_addr), MAC2STR(target_ap), action); 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(sta_addr, sm->addr, ETH_ALEN) != 0) { 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Mismatch in FT Action STA address: " 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "STA=" MACSTR " STA-Address=" MACSTR, 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(sta_addr)); 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Do some sanity checking on the target AP address (not own and not 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * broadcast. This could be extended to filter based on a list of known 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * APs in the MD (if such a list were configured). 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((target_ap[0] & 0x01) || 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(target_ap, sm->wpa_auth->addr, ETH_ALEN) == 0) { 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Invalid Target AP in FT Action " 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "frame"); 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: Action frame body", ies, ies_len); 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RRB - Forward action frame to the target AP */ 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = os_malloc(sizeof(*frame) + len); 11944b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt if (frame == NULL) 11954b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt return -1; 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->packet_type = FT_PACKET_REQUEST; 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->action_length = host_to_le16(len); 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame->ap_address, sm->wpa_auth->addr, ETH_ALEN); 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame + 1, data, len); 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(sm->wpa_auth, target_ap, (u8 *) frame, 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(*frame) + len); 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(frame); 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1210d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic void wpa_ft_rrb_rx_request_cb(void *ctx, const u8 *dst, const u8 *bssid, 1211d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u16 auth_transaction, u16 resp, 1212d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt const u8 *ies, size_t ies_len) 1213d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt{ 1214d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt struct wpa_state_machine *sm = ctx; 1215d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Over-the-DS RX request cb for " MACSTR, 1216d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt MAC2STR(sm->addr)); 1217d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_ft_send_rrb_auth_resp(sm, sm->ft_pending_current_ap, sm->addr, 1218d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt WLAN_STATUS_SUCCESS, ies, ies_len); 1219d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt} 1220d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1221d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_request(struct wpa_authenticator *wpa_auth, 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *current_ap, const u8 *sta_addr, 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *body, size_t len) 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_state_machine *sm; 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status; 1228d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u8 *resp_ies; 1229d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt size_t resp_ies_len; 1230d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt int res; 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm = wpa_ft_add_sta(wpa_auth, sta_addr); 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm == NULL) { 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to add new STA based on " 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RRB Request"); 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RRB Request Frame body", body, len); 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1241d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_cb = wpa_ft_rrb_rx_request_cb; 1242d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_cb_ctx = sm; 1243d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_memcpy(sm->ft_pending_current_ap, current_ap, ETH_ALEN); 1244d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt res = wpa_ft_process_auth_req(sm, body, len, &resp_ies, 1245d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt &resp_ies_len); 1246d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (res < 0) { 1247d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No immediate response available - wait for pull response"); 1248d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return 0; 1249d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt } 1250d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt status = res; 1251d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1252d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt res = wpa_ft_send_rrb_auth_resp(sm, current_ap, sta_addr, status, 1253d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt resp_ies, resp_ies_len); 1254d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_free(resp_ies); 1255d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return res; 1256d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt} 1257d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1258d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1259d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic int wpa_ft_send_rrb_auth_resp(struct wpa_state_machine *sm, 1260d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt const u8 *current_ap, const u8 *sta_addr, 1261d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u16 status, const u8 *resp_ies, 1262d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt size_t resp_ies_len) 1263d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt{ 1264d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt struct wpa_authenticator *wpa_auth = sm->wpa_auth; 1265d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt size_t rlen; 1266d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt struct ft_rrb_frame *frame; 1267d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u8 *pos; 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB authentication response: STA=" MACSTR 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " CurrentAP=" MACSTR " status=%d", 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(sm->addr), MAC2STR(current_ap), status); 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Response IEs", resp_ies, resp_ies_len); 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* RRB - Forward action frame response to the Current AP */ 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * data: Category[1] Action[1] STA_Address[6] Target_AP_Address[6] 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Status_Code[2] FT Request action frame body[variable] 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rlen = 2 + 2 * ETH_ALEN + 2 + resp_ies_len; 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = os_malloc(sizeof(*frame) + rlen); 1283d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (frame == NULL) 12844b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt return -1; 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->packet_type = FT_PACKET_RESPONSE; 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->action_length = host_to_le16(rlen); 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame->ap_address, wpa_auth->addr, ETH_ALEN); 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (frame + 1); 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = WLAN_ACTION_FT; 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos++ = 2; /* Action: Response */ 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, sta_addr, ETH_ALEN); 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, wpa_auth->addr, ETH_ALEN); 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE16(pos, status); 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 1298d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (resp_ies) 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(pos, resp_ies, resp_ies_len); 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, current_ap, (u8 *) frame, 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(*frame) + rlen); 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(frame); 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth, 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *src_addr, 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_pull_frame *frame, f; 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r1kh *r1kh; 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_resp_frame resp, r; 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 pmk_r0[PMK_LEN]; 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull"); 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = wpa_auth->conf.r1kh_list; 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1kh) { 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r1kh->addr, src_addr, ETH_ALEN) == 0) 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = r1kh->next; 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r1kh == NULL) { 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching R1KH address found for " 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R1 pull source address " MACSTR, 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_r0kh_r1kh_pull_frame *) data; 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_unwrap() does not support inplace decryption, so use a temporary 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 13409ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_unwrap(r1kh->key, sizeof(r1kh->key), 13419ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt (FT_R0KH_R1KH_PULL_DATA_LEN + 7) / 8, 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->nonce, f.nonce) < 0) { 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull " 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "request from " MACSTR, MAC2STR(src_addr)); 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce", 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.nonce, sizeof(f.nonce)); 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR0Name", 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r0_name, WPA_PMK_NAME_LEN); 1352d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR " S1KH-ID=" 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id)); 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&resp, 0, sizeof(resp)); 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp.packet_type = FT_PACKET_R0KH_R1KH_RESP; 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp.data_length = host_to_le16(FT_R0KH_R1KH_RESP_DATA_LEN); 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(resp.ap_address, wpa_auth->addr, ETH_ALEN); 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_wrap() does not support inplace encryption, so use a temporary 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r.nonce, f.nonce, sizeof(f.nonce)); 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r.r1kh_id, f.r1kh_id, FT_R1KH_ID_LEN); 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(r.s1kh_id, f.s1kh_id, ETH_ALEN); 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_fetch_pmk_r0(wpa_auth, f.s1kh_id, f.pmk_r0_name, pmk_r0, 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &pairwise) < 0) { 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name found for " 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R1 pull"); 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1(pmk_r0, f.pmk_r0_name, f.r1kh_id, f.s1kh_id, 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r.pmk_r1, r.pmk_r1_name); 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", r.pmk_r1, PMK_LEN); 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", r.pmk_r1_name, 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PMK_NAME_LEN); 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r.pairwise = host_to_le16(pairwise); 1379b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt os_memset(r.pad, 0, sizeof(r.pad)); 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13819ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_wrap(r1kh->key, sizeof(r1kh->key), 13829ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8, 13838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r.nonce, resp.nonce) < 0) { 13848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(pmk_r0, 0, PMK_LEN); 13858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 13868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(pmk_r0, 0, PMK_LEN); 13898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, src_addr, (u8 *) &resp, sizeof(resp)); 13918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 13938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1396d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic void ft_pull_resp_cb_finish(void *eloop_ctx, void *timeout_ctx) 1397d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt{ 1398d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt struct wpa_state_machine *sm = eloop_ctx; 1399d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt int res; 1400d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u8 *resp_ies; 1401d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt size_t resp_ies_len; 1402d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt u16 status; 1403d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1404d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt res = wpa_ft_process_auth_req(sm, wpabuf_head(sm->ft_pending_req_ies), 1405d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpabuf_len(sm->ft_pending_req_ies), 1406d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt &resp_ies, &resp_ies_len); 1407d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpabuf_free(sm->ft_pending_req_ies); 1408d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_req_ies = NULL; 1409d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (res < 0) 1410d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt res = WLAN_STATUS_UNSPECIFIED_FAILURE; 1411d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt status = res; 1412d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Postponed auth callback result for " MACSTR 1413d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt " - status %u", MAC2STR(sm->addr), status); 1414d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1415d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_cb(sm->ft_pending_cb_ctx, sm->addr, sm->wpa_auth->addr, 1416d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt sm->ft_pending_auth_transaction + 1, status, 1417d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt resp_ies, resp_ies_len); 1418d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt os_free(resp_ies); 1419d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt} 1420d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1421d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1422d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidtstatic int ft_pull_resp_cb(struct wpa_state_machine *sm, void *ctx) 1423d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt{ 1424d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt struct ft_r0kh_r1kh_resp_frame *frame = ctx; 1425d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1426d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (os_memcmp(frame->s1kh_id, sm->addr, ETH_ALEN) != 0) 1427d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return 0; 1428d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (os_memcmp(frame->nonce, sm->ft_pending_pull_nonce, 1429d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt FT_R0KH_R1KH_PULL_NONCE_LEN) != 0) 1430d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return 0; 1431d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt if (sm->ft_pending_cb == NULL || sm->ft_pending_req_ies == NULL) 1432d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return 0; 1433d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1434d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Response to a pending pull request for " 1435d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt MACSTR " - process from timeout", MAC2STR(sm->addr)); 1436d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt eloop_register_timeout(0, 0, ft_pull_resp_cb_finish, sm, NULL); 1437d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return 1; 1438d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt} 1439d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 1440d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt 14418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth, 14428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *src_addr, 14438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 14448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_resp_frame *frame, f; 14468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r0kh *r0kh; 1447d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt int pairwise, res; 14488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull response"); 14508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) 14528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = wpa_auth->conf.r0kh_list; 14558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0kh) { 14568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0) 14578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = r0kh->next; 14598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh == NULL) { 14618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for " 14628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R0 pull response source address " MACSTR, 14638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 14648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_r0kh_r1kh_resp_frame *) data; 14688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_unwrap() does not support inplace decryption, so use a temporary 14698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 14709ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_unwrap(r0kh->key, sizeof(r0kh->key), 14719ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt (FT_R0KH_R1KH_RESP_DATA_LEN + 7) / 8, 14728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->nonce, f.nonce) < 0) { 14738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 pull " 14748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "response from " MACSTR, MAC2STR(src_addr)); 14758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1478c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(f.r1kh_id, wpa_auth->conf.r1_key_holder, 1479c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt FT_R1KH_ID_LEN) != 0) { 14808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull response did not use a " 14818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "matching R1KH-ID"); 14828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 14838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise = le_to_host16(f.pairwise); 14868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce", 14878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.nonce, sizeof(f.nonce)); 1488d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR " S1KH-ID=" 14898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR " pairwise=0x%x", 14908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise); 14918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 pull - PMK-R1", 14928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1, PMK_LEN); 14938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - PMKR1Name", 14948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1_name, WPA_PMK_NAME_LEN); 14958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1496d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt res = wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name, 1497d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt pairwise); 1498d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Look for pending pull request"); 1499d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt wpa_auth_for_each_sta(wpa_auth, ft_pull_resp_cb, &f); 15008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(f.pmk_r1, 0, PMK_LEN); 15018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1502d11f019d62a42a8fc4c4d1f2ec17cf35b0763153Dmitry Shmidt return res ? 0 : -1; 15038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 15048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth, 15078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *src_addr, 15088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 15098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 15108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_push_frame *frame, f; 15118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r0kh *r0kh; 15128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct os_time now; 15138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_time_t tsend; 15148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int pairwise; 15158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 push"); 15178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) 15198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = wpa_auth->conf.r0kh_list; 15228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0kh) { 15238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0kh->addr, src_addr, ETH_ALEN) == 0) 15248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 15258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0kh = r0kh->next; 15268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0kh == NULL) { 15288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: No matching R0KH address found for " 15298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "PMK-R0 push source address " MACSTR, 15308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 15318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_r0kh_r1kh_push_frame *) data; 15358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_unwrap() does not support inplace decryption, so use a temporary 15368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 15379ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_unwrap(r0kh->key, sizeof(r0kh->key), 15389ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8, 15398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->timestamp, f.timestamp) < 0) { 15408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Failed to decrypt PMK-R1 push from " 15418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR, MAC2STR(src_addr)); 15428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_get_time(&now); 15468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tsend = WPA_GET_LE32(f.timestamp); 15478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((now.sec > tsend && now.sec - tsend > 60) || 15488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (now.sec < tsend && tsend - now.sec > 60)) { 15498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not have a valid " 15508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "timestamp: sender time %d own time %d\n", 15518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (int) tsend, (int) now.sec); 15528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1555c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(f.r1kh_id, wpa_auth->conf.r1_key_holder, 1556c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt FT_R1KH_ID_LEN) != 0) { 15578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 push did not use a matching " 15588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "R1KH-ID (received " MACSTR " own " MACSTR ")", 15598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(f.r1kh_id), 15608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wpa_auth->conf.r1_key_holder)); 15618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise = le_to_host16(f.pairwise); 15658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - R1KH-ID=" MACSTR " S1KH-ID=" 15668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR " pairwise=0x%x", 15678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise); 15688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1 push - PMK-R1", 15698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1, PMK_LEN); 15708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - PMKR1Name", 15718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pmk_r1_name, WPA_PMK_NAME_LEN); 15728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name, 15748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pairwise); 15758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(f.pmk_r1, 0, PMK_LEN); 15768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 15788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 15798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint wpa_ft_rrb_rx(struct wpa_authenticator *wpa_auth, const u8 *src_addr, 15828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *data, size_t data_len) 15838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 15848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_rrb_frame *frame; 15858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 alen; 15868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos, *end, *start; 15878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 action; 15888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *sta_addr, *target_ap_addr; 15898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB received frame from remote AP " MACSTR, 15918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(src_addr)); 15928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data_len < sizeof(*frame)) { 15948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (data_len=%lu)", 15958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) data_len); 15968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 15978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 15998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = data; 16008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame = (struct ft_rrb_frame *) pos; 16018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += sizeof(*frame); 16028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt alen = le_to_host16(frame->action_length); 16048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB frame - frame_type=%d packet_type=%d " 16058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "action_length=%d ap_address=" MACSTR, 16068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame->frame_type, frame->packet_type, alen, 16078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(frame->ap_address)); 16088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->frame_type != RSN_REMOTE_FRAME_TYPE_FT_RRB) { 16108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Discard frame per IEEE Std 802.11r-2008, 11A.10.3 */ 16118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with " 16128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "unrecognized type %d", frame->frame_type); 16138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (alen > data_len - sizeof(*frame)) { 16178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB frame too short for action " 16188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "frame"); 16198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_R0KH_R1KH_PULL) 16238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_ft_rrb_rx_pull(wpa_auth, src_addr, data, data_len); 16248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_R0KH_R1KH_RESP) 16258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_ft_rrb_rx_resp(wpa_auth, src_addr, data, data_len); 16268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_R0KH_R1KH_PUSH) 16278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wpa_ft_rrb_rx_push(wpa_auth, src_addr, data, data_len); 16288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "FT: RRB - FT Action frame", pos, alen); 16308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (alen < 1 + 1 + 2 * ETH_ALEN) { 16328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Too short RRB frame (not enough " 16338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "room for Action Frame body); alen=%lu", 16348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) alen); 16358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt start = pos; 16388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt end = pos + alen; 16398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != WLAN_ACTION_FT) { 16418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unexpected Action frame category " 16428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "%d", *pos); 16438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos++; 16478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt action = *pos++; 16488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sta_addr = pos; 16498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 16508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt target_ap_addr = pos; 16518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += ETH_ALEN; 16528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB Action Frame: action=%d sta_addr=" 16538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR " target_ap_addr=" MACSTR, 16548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt action, MAC2STR(sta_addr), MAC2STR(target_ap_addr)); 16558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (frame->packet_type == FT_PACKET_REQUEST) { 16578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Request"); 16588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (action != 1) { 16608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Unexpected Action %d in " 16618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RRB Request", action); 16628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(target_ap_addr, wpa_auth->addr, ETH_ALEN) != 0) { 16668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Target AP address in the " 16678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "RRB Request does not match with own " 16688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "address"); 16698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_rrb_rx_request(wpa_auth, frame->ap_address, 16738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sta_addr, pos, end - pos) < 0) 16748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (frame->packet_type == FT_PACKET_RESPONSE) { 16768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 status_code; 16778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (end - pos < 2) { 16798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Not enough room for status " 16808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "code in RRB Response"); 16818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status_code = WPA_GET_LE16(pos); 16848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 16858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: FT Packet Type - Response " 16878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(status_code=%d)", status_code); 16888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 16898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpa_ft_action_send(wpa_auth, sta_addr, start, alen) < 0) 16908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 16928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: RRB discarded frame with unknown " 16938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "packet_type %d", frame->packet_type); 16948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 16958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 16968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1697c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (end > pos) { 1698c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: Ignore extra data in end", 1699c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt pos, end - pos); 1700c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt } 1701c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt 17028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 17038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 17048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth, 17078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *pmk_r0, 17088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r1kh *r1kh, 17098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *s1kh_id, int pairwise) 17108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 17118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_r0kh_r1kh_push_frame frame, f; 17128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct os_time now; 17138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&frame, 0, sizeof(frame)); 17158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.frame_type = RSN_REMOTE_FRAME_TYPE_FT_RRB; 17168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.packet_type = FT_PACKET_R0KH_R1KH_PUSH; 17178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt frame.data_length = host_to_le16(FT_R0KH_R1KH_PUSH_DATA_LEN); 17188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(frame.ap_address, wpa_auth->addr, ETH_ALEN); 17198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* aes_wrap() does not support inplace encryption, so use a temporary 17218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * buffer for the data. */ 17228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.r1kh_id, r1kh->id, FT_R1KH_ID_LEN); 17238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.s1kh_id, s1kh_id, ETH_ALEN); 17248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(f.pmk_r0_name, pmk_r0->pmk_r0_name, WPA_PMK_NAME_LEN); 17258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_derive_pmk_r1(pmk_r0->pmk_r0, pmk_r0->pmk_r0_name, r1kh->id, 17268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt s1kh_id, f.pmk_r1, f.pmk_r1_name); 17278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: R1KH-ID " MACSTR, MAC2STR(r1kh->id)); 17288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "FT: PMK-R1", f.pmk_r1, PMK_LEN); 17298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name", f.pmk_r1_name, 17308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PMK_NAME_LEN); 17318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_get_time(&now); 17328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_PUT_LE32(f.timestamp, now.sec); 17338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.pairwise = host_to_le16(pairwise); 1734b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt os_memset(f.pad, 0, sizeof(f.pad)); 17359ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt if (aes_wrap(r1kh->key, sizeof(r1kh->key), 17369ead16e203b81d44a2d84eadc2901ceeb7daf805Dmitry Shmidt (FT_R0KH_R1KH_PUSH_DATA_LEN + 7) / 8, 17378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt f.timestamp, frame.timestamp) < 0) 17388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 17398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_rrb_send(wpa_auth, r1kh->addr, (u8 *) &frame, sizeof(frame)); 17418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 17428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr) 17458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 17468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpa_ft_pmk_r0_sa *r0; 17478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct ft_remote_r1kh *r1kh; 17488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wpa_auth->conf.pmk_r1_push) 17508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 17518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = wpa_auth->ft_pmk_cache->pmk_r0; 17538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r0) { 17548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(r0->spa, addr, ETH_ALEN) == 0) 17558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 17568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0 = r0->next; 17578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 17588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r0 == NULL || r0->pmk_r1_pushed) 17608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 17618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r0->pmk_r1_pushed = 1; 17628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "FT: Deriving and pushing PMK-R1 keys to R1KHs " 17648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for STA " MACSTR, MAC2STR(addr)); 17658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = wpa_auth->conf.r1kh_list; 17678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (r1kh) { 17688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr, r0->pairwise); 17698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt r1kh = r1kh->next; 17708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 17718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 17728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 17738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_IEEE80211R */ 1774