wps_enrollee.c revision 87fd279308af3f806848c8f2ab65ef18c6ac4c30
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Wi-Fi Protected Setup - Enrollee 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2008, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 58d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This program is free software; you can redistribute it and/or modify 68d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it under the terms of the GNU General Public License version 2 as 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * published by the Free Software Foundation. 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Alternatively, this software may be distributed under the terms of BSD 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * license. 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * See README and COPYING for more details. 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/crypto.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha256.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/random.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps_i.h" 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps_dev_attr.h" 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_mac_addr(struct wps_data *wps, struct wpabuf *msg) 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * MAC Address"); 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_MAC_ADDR); 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ETH_ALEN); 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->mac_addr_e, ETH_ALEN); 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_wps_state(struct wps_data *wps, struct wpabuf *msg) 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 state; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state = wps->wps->wps_state; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state = WPS_STATE_NOT_CONFIGURED; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)", 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state); 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_WPS_STATE); 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 1); 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, state); 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_hash(struct wps_data *wps, struct wpabuf *msg) 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *hash; 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0) 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-S1", wps->snonce, WPS_SECRET_NONCE_LEN); 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-S2", 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN); 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) { 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for " 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "E-Hash derivation"); 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-Hash1"); 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_HASH1); 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, SHA256_MAC_LEN); 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash = wpabuf_put(msg, SHA256_MAC_LEN); 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */ 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wps->snonce; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", hash, SHA256_MAC_LEN); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-Hash2"); 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_HASH2); 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, SHA256_MAC_LEN); 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash = wpabuf_put(msg, SHA256_MAC_LEN); 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */ 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN; 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", hash, SHA256_MAC_LEN); 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_snonce1(struct wps_data *wps, struct wpabuf *msg) 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-SNonce1"); 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_SNONCE1); 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN); 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN); 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_snonce2(struct wps_data *wps, struct wpabuf *msg) 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-SNonce2"); 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_SNONCE2); 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN); 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN, 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m1(struct wps_data *wps) 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_methods; 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(wps->nonce_e, WPS_NONCE_LEN) < 0) 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce", 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M1"); 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods = wps->wps->config_methods; 13687fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen if (wps->wps->ap && !wps->pbc_in_m1 && 13787fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen (wps->dev_password_len != 0 || 13887fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen (config_methods & WPS_CONFIG_DISPLAY))) { 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * These are the methods that the AP supports as an Enrollee 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * for adding external Registrars, so remove PushButton. 14287fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * 14387fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * As a workaround for Windows 7 mechanism for probing WPS 14487fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * capabilities from M1, leave PushButton option if no PIN 14587fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * method is available or if WPS configuration enables PBC 14687fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * workaround. 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods &= ~WPS_CONFIG_PUSHBUTTON; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON | 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_CONFIG_PHY_PUSHBUTTON); 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M1) || 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_uuid_e(msg, wps->uuid_e) || 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_mac_addr(wps, msg) || 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_public_key(wps, msg) || 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_auth_type_flags(wps, msg) || 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_type_flags(wps, msg) || 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_conn_type_flags(wps, msg) || 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_config_methods(msg, config_methods) || 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wps_state(wps, msg) || 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_device_attrs(&wps->wps->dev, msg) || 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_rf_bands(&wps->wps->dev, msg) || 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_assoc_state(wps, msg) || 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_dev_password_id(msg, wps->dev_pw_id) || 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_config_error(msg, WPS_CFG_NO_ERROR) || 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_os_version(&wps->wps->dev, msg) || 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0)) { 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m3(struct wps_data *wps) 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M3"); 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dev_password == NULL) { 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Device Password available"); 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_derive_psk(wps, wps->dev_password, wps->dev_password_len); 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M3) || 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_hash(wps, msg) || 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M4; 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m5(struct wps_data *wps) 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M5"); 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(200); 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M5) || 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce1(wps, plain) || 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M6; 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_ssid(struct wps_data *wps, struct wpabuf *msg) 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * SSID"); 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_SSID); 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->ssid_len); 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->ssid, wps->wps->ssid_len); 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_auth_type(struct wps_data *wps, struct wpabuf *msg) 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Authentication Type"); 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_AUTH_TYPE); 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->auth_types); 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg) 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Encryption Type"); 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_ENCR_TYPE); 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->encr_types); 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_network_key(struct wps_data *wps, struct wpabuf *msg) 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Network Key"); 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_NETWORK_KEY); 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->network_key_len); 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->network_key, wps->wps->network_key_len); 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_mac_addr(struct wps_data *wps, struct wpabuf *msg) 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * MAC Address (AP BSSID)"); 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_MAC_ADDR); 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ETH_ALEN); 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->dev.mac_addr, ETH_ALEN); 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *plain) 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap_settings) { 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * AP Settings (pre-configured)"); 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(plain, wps->wps->ap_settings, 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->ap_settings_len); 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_build_cred_ssid(wps, plain) || 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_mac_addr(wps, plain) || 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_auth_type(wps, plain) || 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_encr_type(wps, plain) || 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_network_key(wps, plain); 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m7(struct wps_data *wps) 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M7"); 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(500 + wps->wps->ap_settings_len); 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000 + wps->wps->ap_settings_len); 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M7) || 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce2(wps, plain) || 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (wps->wps->ap && wps_build_ap_settings(wps, plain)) || 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->registrar) { 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * If the Registrar is only learning our current configuration, 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it may not continue protocol run to successful completion. 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Store information here to make sure it remains available. 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_device_store(wps->wps->registrar, &wps->peer_dev, 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->uuid_r); 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M8; 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_wsc_done(struct wps_data *wps) 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_Done"); 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_WSC_DONE) || 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0)) { 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_ACK; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_success_event(wps->wps); 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code *op_code) 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M1: 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m1(wps); 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M3: 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m3(wps); 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M5: 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m5(wps); 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M7: 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m7(wps); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECEIVED_M2D: 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) { 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_ack(wps); 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_ACK; 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg) { 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Another M2/M2D may be received */ 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_WSC_NACK: 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_MSG_DONE: 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_done(wps); 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_Done; 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building " 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "a message", wps->state); 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = NULL; 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*op_code == WSC_MSG && msg) { 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce) 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_nonce == NULL) { 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received"); 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->nonce_r, r_nonce, WPS_NONCE_LEN); 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce", 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce) 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (e_nonce == NULL) { 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received"); 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->nonce_e, e_nonce, WPS_NONCE_LEN) != 0) { 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Enrollee Nonce received"); 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_uuid_r(struct wps_data *wps, const u8 *uuid_r) 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (uuid_r == NULL) { 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No UUID-R received"); 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->uuid_r, uuid_r, WPS_UUID_LEN); 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN); 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_pubkey(struct wps_data *wps, const u8 *pk, 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pk_len) 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pk == NULL || pk_len == 0) { 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Public Key received"); 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_OOB 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dev_pw_id != DEV_PW_DEFAULT && 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->oob_conf.pubkey_hash) { 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[1]; 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[WPS_HASH_LEN]; 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = pk; 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(1, addr, &pk_len, hash); 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(hash, 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(wps->wps->oob_conf.pubkey_hash), 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_OOB_PUBKEY_HASH_LEN) != 0) { 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "WPS: Public Key hash error"); 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_OOB */ 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->dh_pubkey_r); 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dh_pubkey_r = wpabuf_alloc_copy(pk, pk_len); 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_r == NULL) 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_derive_keys(wps) < 0) 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash1(struct wps_data *wps, const u8 *r_hash1) 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash1 == NULL) { 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash1 received"); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash1, r_hash1, WPS_HASH_LEN); 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", wps->peer_hash1, WPS_HASH_LEN); 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash2(struct wps_data *wps, const u8 *r_hash2) 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash2 == NULL) { 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash2 received"); 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash2, r_hash2, WPS_HASH_LEN); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", wps->peer_hash2, WPS_HASH_LEN); 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce1(struct wps_data *wps, const u8 *r_snonce1) 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce1 == NULL) { 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce1 received"); 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce1", r_snonce1, 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */ 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce1; 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) { 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash1 derived from R-S1 does " 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 1); 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the first " 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce2(struct wps_data *wps, const u8 *r_snonce2) 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce2 == NULL) { 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce2 received"); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce2", r_snonce2, 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */ 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce2; 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) { 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash2 derived from R-S2 does " 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 2); 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the second " 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_cred_e(struct wps_data *wps, const u8 *cred, 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len, int wps2) 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf msg; 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received Credential"); 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&wps->cred, 0, sizeof(wps->cred)); 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&msg, cred, cred_len); 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(&msg, &attr) < 0 || 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_cred(&attr, &wps->cred)) 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the Credential (" 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(wps->cred.mac_addr), 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(wps->cred.encr_type & 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) { 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->cred.encr_type & WPS_ENCR_WEP) { 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential " 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -2; 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential due to " 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", wps->cred.encr_type); 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = cred - 4; 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = cred_len + 4; 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred); 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = NULL; 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = 0; 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_creds(struct wps_data *wps, const u8 *cred[], 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len[], size_t num_cred, int wps2) 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ok = 0; 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (num_cred == 0) { 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Credential attributes " 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < num_cred; i++) { 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wps_process_cred_e(wps, cred[i], cred_len[i], wps2); 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == 0) 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ok++; 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (res == -2) 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: WEP credential skipped"); 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ok == 0) { 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No valid Credential attribute " 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_ap_settings_e(struct wps_data *wps, 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr, 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *attrs, int wps2) 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_credential cred; 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wps->wps->ap) 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_ap_settings(attr, &cred) < 0) 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Received new AP configuration from " 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Registrar"); 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the AP Settings (" 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(cred.mac_addr), 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(cred.encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cred.encr_type & WPS_ENCR_WEP) { 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings " 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to " 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", cred.encr_type); 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_ENCR_TKIP || 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS-STRICT: Invalid WSC 2.0 " 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AP Settings: WPA-Personal/TKIP only"); 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED; 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == WPS_ENCR_TKIP) 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> " 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TKIP+AES"); 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.encr_type |= WPS_ENCR_AES; 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> " 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "WPAPSK+WPA2PSK"); 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.auth_type |= WPS_AUTH_WPA2PSK; 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr = wpabuf_head(attrs); 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr_len = wpabuf_len(attrs); 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->cred_cb(wps->wps->cb_ctx, &cred); 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2(struct wps_data *wps, 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2"); 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2", wps->state); 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_registrar_nonce(wps, attr->registrar_nonce) || 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_uuid_r(wps, attr->uuid_r)) { 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here on an AP as an Enrollee if AP Setup is locked unless the 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * special locked mode is used to allow protocol run up to M7 in order 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * to support external Registrars that only learn the current AP 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * configuration without changing it. 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ((wps->wps->ap_setup_locked && wps->wps->ap_setup_locked != 2) || 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dev_password == NULL)) { 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_pubkey(wps, attr->public_key, attr->public_key_len) || 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_device_attrs(&wps->peer_dev, attr)) { 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M3; 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2d(struct wps_data *wps, 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2D"); 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2D", wps->state); 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer", 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->manufacturer, attr->manufacturer_len); 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name", 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_name, attr->model_name_len); 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number", 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_number, attr->model_number_len); 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number", 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->serial_number, attr->serial_number_len); 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name", 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->dev_name, attr->dev_name_len); 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->event_cb) { 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt union wps_event_data data; 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_event_m2d *m2d = &data.m2d; 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&data, 0, sizeof(data)); 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_methods) 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_methods = 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_methods); 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer = attr->manufacturer; 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer_len = attr->manufacturer_len; 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name = attr->model_name; 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name_len = attr->model_name_len; 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number = attr->model_number; 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number_len = attr->model_number_len; 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number = attr->serial_number; 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number_len = attr->serial_number_len; 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name = attr->dev_name; 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name_len = attr->dev_name_len; 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->primary_dev_type = attr->primary_dev_type; 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_error) 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_error = 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_error); 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->dev_password_id) 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_password_id = 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->dev_password_id); 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_M2D, &data); 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECEIVED_M2D; 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m4(struct wps_data *wps, 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M4"); 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M4) { 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M4", wps->state); 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash1(wps, attr->r_hash1) || 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash2(wps, attr->r_hash2)) { 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m4_encr(decrypted, attr->version2 != 0) < 0) { 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce1(wps, eattr.r_snonce1)) { 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M5; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m6(struct wps_data *wps, 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M6"); 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M6) { 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M6", wps->state); 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m6_encr(decrypted, attr->version2 != 0) < 0) { 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce2(wps, eattr.r_snonce2)) { 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M7; 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m8(struct wps_data *wps, 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M8"); 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M8) { 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M8", wps->state); 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->ap_setup_locked) { 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here if special ap_setup_locked == 2 mode allowed the 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * protocol to continue beyond M2. This allows ER to learn the 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * current AP settings without changing them. 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m8_encr(decrypted, wps->wps->ap, attr->version2 != 0) 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt < 0) { 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_creds(wps, eattr.cred, eattr.cred_len, 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.num_cred, attr->version2 != NULL) || 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_ap_settings_e(wps, &eattr, decrypted, 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->version2 != NULL)) { 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_MSG_DONE; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_msg(struct wps_data *wps, 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wps_process_res ret = WPS_CONTINUE; 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG"); 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) { 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (*attr.msg_type) { 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2: 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2(msg) < 0) 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2(wps, msg, &attr); 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2D: 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2d(msg) < 0) 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2d(wps, &attr); 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M4: 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m4(msg) < 0) 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m4(wps, msg, &attr); 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M4, wps->config_error, 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M6: 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m6(msg) < 0) 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m6(wps, msg, &attr); 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M6, wps->config_error, 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M8: 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m8(msg) < 0) 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m8(wps, msg, &attr); 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M8, wps->config_error, 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d", 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Save a copy of the last message for Authenticator derivation if we 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * are continuing. However, skip M2D since it is not authenticated and 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * neither is the ACK/NACK response frame. This allows the possibly 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * following M2 to be processed correctly by using the previously sent 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * M1 in Authenticator derivation. 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_CONTINUE && *attr.msg_type != WPS_M2D) { 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_ack(struct wps_data *wps, 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK"); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_ACK) { 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0)) 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) { 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state == RECV_ACK && wps->wps->ap) { 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: External Registrar registration " 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "completed successfully"); 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_success_event(wps->wps); 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_DONE; 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_nack(struct wps_data *wps, 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_error; 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK"); 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_NACK) { 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0)) 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Registrar Nonce", 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.registrar_nonce, WPS_NONCE_LEN); 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Registrar Nonce", 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) { 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Enrollee Nonce", 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.enrollee_nonce, WPS_NONCE_LEN); 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Enrollee Nonce", 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.config_error == NULL) { 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute " 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "in WSC_NACK"); 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_error = WPA_GET_BE16(attr.config_error); 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar terminated negotiation with " 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Configuration Error %d", config_error); 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M4: 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M3, config_error, 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M6: 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M5, config_error, 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M8: 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M7, config_error, 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Followed by NACK if Enrollee is Supplicant or EAP-Failure if 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Enrollee is Authenticator */ 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtenum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code op_code, 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu " 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "op_code=%d)", 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(msg), op_code); 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (op_code == WSC_UPnP) { 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Determine the OpCode based on message type attribute */ 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) { 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type == WPS_WSC_ACK) 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_ACK; 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (*attr.msg_type == WPS_WSC_NACK) 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_NACK; 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (op_code) { 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_MSG: 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_UPnP: 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_msg(wps, msg); 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_ACK: 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_ack(msg) < 0) 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_ack(wps, msg); 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_NACK: 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_nack(msg) < 0) 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_nack(wps, msg); 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code); 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1358