18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Wi-Fi Protected Setup - Enrollee 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2008, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 5c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * This software may be distributed under the terms of the BSD license. 6c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt * See README for more details. 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/crypto.h" 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha256.h" 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/random.h" 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps_i.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "wps_dev_attr.h" 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_mac_addr(struct wps_data *wps, struct wpabuf *msg) 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * MAC Address"); 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_MAC_ADDR); 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ETH_ALEN); 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->mac_addr_e, ETH_ALEN); 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_wps_state(struct wps_data *wps, struct wpabuf *msg) 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 state; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state = wps->wps->wps_state; 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state = WPS_STATE_NOT_CONFIGURED; 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)", 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state); 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_WPS_STATE); 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 1); 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, state); 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_hash(struct wps_data *wps, struct wpabuf *msg) 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *hash; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0) 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-S1", wps->snonce, WPS_SECRET_NONCE_LEN); 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-S2", 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) { 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for " 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "E-Hash derivation"); 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-Hash1"); 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_HASH1); 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, SHA256_MAC_LEN); 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash = wpabuf_put(msg, SHA256_MAC_LEN); 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */ 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wps->snonce; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", hash, SHA256_MAC_LEN); 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-Hash2"); 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_HASH2); 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, SHA256_MAC_LEN); 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash = wpabuf_put(msg, SHA256_MAC_LEN); 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */ 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN; 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", hash, SHA256_MAC_LEN); 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_snonce1(struct wps_data *wps, struct wpabuf *msg) 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-SNonce1"); 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_SNONCE1); 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN); 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN); 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_snonce2(struct wps_data *wps, struct wpabuf *msg) 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-SNonce2"); 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_SNONCE2); 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN); 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN, 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m1(struct wps_data *wps) 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_methods; 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(wps->nonce_e, WPS_NONCE_LEN) < 0) 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce", 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M1"); 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods = wps->wps->config_methods; 13087fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen if (wps->wps->ap && !wps->pbc_in_m1 && 13187fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen (wps->dev_password_len != 0 || 13287fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen (config_methods & WPS_CONFIG_DISPLAY))) { 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * These are the methods that the AP supports as an Enrollee 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * for adding external Registrars, so remove PushButton. 13687fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * 13787fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * As a workaround for Windows 7 mechanism for probing WPS 13887fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * capabilities from M1, leave PushButton option if no PIN 13987fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * method is available or if WPS configuration enables PBC 14087fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * workaround. 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods &= ~WPS_CONFIG_PUSHBUTTON; 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON | 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_CONFIG_PHY_PUSHBUTTON); 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M1) || 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_uuid_e(msg, wps->uuid_e) || 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_mac_addr(wps, msg) || 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_public_key(wps, msg) || 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_auth_type_flags(wps, msg) || 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_type_flags(wps, msg) || 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_conn_type_flags(wps, msg) || 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_config_methods(msg, config_methods) || 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wps_state(wps, msg) || 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_device_attrs(&wps->wps->dev, msg) || 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_rf_bands(&wps->wps->dev, msg) || 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_assoc_state(wps, msg) || 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_dev_password_id(msg, wps->dev_pw_id) || 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_config_error(msg, WPS_CFG_NO_ERROR) || 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_os_version(&wps->wps->dev, msg) || 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0)) { 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m3(struct wps_data *wps) 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M3"); 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dev_password == NULL) { 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Device Password available"); 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_derive_psk(wps, wps->dev_password, wps->dev_password_len); 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M3) || 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_hash(wps, msg) || 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M4; 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m5(struct wps_data *wps) 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M5"); 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(200); 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M5) || 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce1(wps, plain) || 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M6; 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_ssid(struct wps_data *wps, struct wpabuf *msg) 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * SSID"); 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_SSID); 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->ssid_len); 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->ssid, wps->wps->ssid_len); 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_auth_type(struct wps_data *wps, struct wpabuf *msg) 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 254c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt u16 auth_type = wps->wps->auth_types; 255c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 256c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt /* Select the best authentication type */ 257c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (auth_type & WPS_AUTH_WPA2PSK) 258c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt auth_type = WPS_AUTH_WPA2PSK; 259c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt else if (auth_type & WPS_AUTH_WPAPSK) 260c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt auth_type = WPS_AUTH_WPAPSK; 261c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt else if (auth_type & WPS_AUTH_OPEN) 262c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt auth_type = WPS_AUTH_OPEN; 263c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt else if (auth_type & WPS_AUTH_SHARED) 264c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt auth_type = WPS_AUTH_SHARED; 265c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 266c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)", auth_type); 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_AUTH_TYPE); 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 269c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wpabuf_put_be16(msg, auth_type); 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg) 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 276c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt u16 encr_type = wps->wps->encr_types; 277c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 278c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt /* Select the best encryption type */ 279c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (wps->wps->auth_types & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) { 280c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (encr_type & WPS_ENCR_AES) 281c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt encr_type = WPS_ENCR_AES; 282c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt else if (encr_type & WPS_ENCR_TKIP) 283c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt encr_type = WPS_ENCR_TKIP; 284c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } else { 285c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (encr_type & WPS_ENCR_WEP) 286c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt encr_type = WPS_ENCR_WEP; 287c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt else if (encr_type & WPS_ENCR_NONE) 288c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt encr_type = WPS_ENCR_NONE; 289c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt } 290c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 291c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)", encr_type); 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_ENCR_TYPE); 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 294c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wpabuf_put_be16(msg, encr_type); 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_network_key(struct wps_data *wps, struct wpabuf *msg) 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Network Key"); 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_NETWORK_KEY); 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->network_key_len); 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->network_key, wps->wps->network_key_len); 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_mac_addr(struct wps_data *wps, struct wpabuf *msg) 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * MAC Address (AP BSSID)"); 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_MAC_ADDR); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ETH_ALEN); 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->dev.mac_addr, ETH_ALEN); 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *plain) 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap_settings) { 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * AP Settings (pre-configured)"); 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(plain, wps->wps->ap_settings, 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->ap_settings_len); 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_build_cred_ssid(wps, plain) || 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_mac_addr(wps, plain) || 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_auth_type(wps, plain) || 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_encr_type(wps, plain) || 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_network_key(wps, plain); 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m7(struct wps_data *wps) 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M7"); 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(500 + wps->wps->ap_settings_len); 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000 + wps->wps->ap_settings_len); 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M7) || 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce2(wps, plain) || 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (wps->wps->ap && wps_build_ap_settings(wps, plain)) || 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->registrar) { 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * If the Registrar is only learning our current configuration, 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it may not continue protocol run to successful completion. 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Store information here to make sure it remains available. 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_device_store(wps->wps->registrar, &wps->peer_dev, 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->uuid_r); 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M8; 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_wsc_done(struct wps_data *wps) 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_Done"); 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_WSC_DONE) || 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0)) { 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_ACK; 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_success_event(wps->wps); 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code *op_code) 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M1: 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m1(wps); 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M3: 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m3(wps); 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M5: 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m5(wps); 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M7: 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m7(wps); 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECEIVED_M2D: 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) { 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_ack(wps); 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_ACK; 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg) { 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Another M2/M2D may be received */ 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_WSC_NACK: 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_MSG_DONE: 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_done(wps); 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_Done; 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building " 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "a message", wps->state); 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = NULL; 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*op_code == WSC_MSG && msg) { 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce) 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_nonce == NULL) { 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received"); 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->nonce_r, r_nonce, WPS_NONCE_LEN); 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce", 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce) 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (e_nonce == NULL) { 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received"); 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->nonce_e, e_nonce, WPS_NONCE_LEN) != 0) { 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Enrollee Nonce received"); 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_uuid_r(struct wps_data *wps, const u8 *uuid_r) 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (uuid_r == NULL) { 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No UUID-R received"); 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->uuid_r, uuid_r, WPS_UUID_LEN); 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN); 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_pubkey(struct wps_data *wps, const u8 *pk, 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pk_len) 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pk == NULL || pk_len == 0) { 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Public Key received"); 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_OOB 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dev_pw_id != DEV_PW_DEFAULT && 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->oob_conf.pubkey_hash) { 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[1]; 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[WPS_HASH_LEN]; 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = pk; 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sha256_vector(1, addr, &pk_len, hash); 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(hash, 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head(wps->wps->oob_conf.pubkey_hash), 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_OOB_PUBKEY_HASH_LEN) != 0) { 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_ERROR, "WPS: Public Key hash error"); 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_OOB */ 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->dh_pubkey_r); 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dh_pubkey_r = wpabuf_alloc_copy(pk, pk_len); 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_r == NULL) 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_derive_keys(wps) < 0) 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash1(struct wps_data *wps, const u8 *r_hash1) 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash1 == NULL) { 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash1 received"); 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash1, r_hash1, WPS_HASH_LEN); 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", wps->peer_hash1, WPS_HASH_LEN); 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash2(struct wps_data *wps, const u8 *r_hash2) 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash2 == NULL) { 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash2 received"); 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash2, r_hash2, WPS_HASH_LEN); 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", wps->peer_hash2, WPS_HASH_LEN); 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce1(struct wps_data *wps, const u8 *r_snonce1) 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce1 == NULL) { 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce1 received"); 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce1", r_snonce1, 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */ 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce1; 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) { 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash1 derived from R-S1 does " 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 1); 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the first " 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce2(struct wps_data *wps, const u8 *r_snonce2) 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce2 == NULL) { 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce2 received"); 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce2", r_snonce2, 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */ 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce2; 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) { 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash2 derived from R-S2 does " 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 2); 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the second " 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_cred_e(struct wps_data *wps, const u8 *cred, 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len, int wps2) 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf msg; 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received Credential"); 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&wps->cred, 0, sizeof(wps->cred)); 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&msg, cred, cred_len); 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(&msg, &attr) < 0 || 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_cred(&attr, &wps->cred)) 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the Credential (" 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(wps->cred.mac_addr), 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(wps->cred.encr_type & 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) { 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->cred.encr_type & WPS_ENCR_WEP) { 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential " 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -2; 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential due to " 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", wps->cred.encr_type); 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = cred - 4; 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = cred_len + 4; 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred); 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = NULL; 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = 0; 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_creds(struct wps_data *wps, const u8 *cred[], 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len[], size_t num_cred, int wps2) 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ok = 0; 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (num_cred == 0) { 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Credential attributes " 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < num_cred; i++) { 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wps_process_cred_e(wps, cred[i], cred_len[i], wps2); 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == 0) 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ok++; 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (res == -2) 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: WEP credential skipped"); 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ok == 0) { 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No valid Credential attribute " 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_ap_settings_e(struct wps_data *wps, 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr, 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *attrs, int wps2) 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_credential cred; 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wps->wps->ap) 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_ap_settings(attr, &cred) < 0) 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Received new AP configuration from " 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Registrar"); 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the AP Settings (" 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(cred.mac_addr), 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(cred.encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cred.encr_type & WPS_ENCR_WEP) { 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings " 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to " 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", cred.encr_type); 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_ENCR_TKIP || 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS-STRICT: Invalid WSC 2.0 " 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AP Settings: WPA-Personal/TKIP only"); 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED; 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS2 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == WPS_ENCR_TKIP) 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> " 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TKIP+AES"); 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.encr_type |= WPS_ENCR_AES; 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> " 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "WPAPSK+WPA2PSK"); 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.auth_type |= WPS_AUTH_WPA2PSK; 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS2 */ 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr = wpabuf_head(attrs); 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr_len = wpabuf_len(attrs); 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->cred_cb(wps->wps->cb_ctx, &cred); 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2(struct wps_data *wps, 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2"); 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2", wps->state); 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_registrar_nonce(wps, attr->registrar_nonce) || 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_uuid_r(wps, attr->uuid_r)) { 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here on an AP as an Enrollee if AP Setup is locked unless the 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * special locked mode is used to allow protocol run up to M7 in order 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * to support external Registrars that only learn the current AP 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * configuration without changing it. 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ((wps->wps->ap_setup_locked && wps->wps->ap_setup_locked != 2) || 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dev_password == NULL)) { 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_pubkey(wps, attr->public_key, attr->public_key_len) || 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_device_attrs(&wps->peer_dev, attr)) { 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M3; 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2d(struct wps_data *wps, 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2D"); 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2D", wps->state); 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer", 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->manufacturer, attr->manufacturer_len); 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name", 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_name, attr->model_name_len); 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number", 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_number, attr->model_number_len); 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number", 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->serial_number, attr->serial_number_len); 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name", 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->dev_name, attr->dev_name_len); 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->event_cb) { 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt union wps_event_data data; 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_event_m2d *m2d = &data.m2d; 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&data, 0, sizeof(data)); 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_methods) 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_methods = 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_methods); 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer = attr->manufacturer; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer_len = attr->manufacturer_len; 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name = attr->model_name; 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name_len = attr->model_name_len; 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number = attr->model_number; 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number_len = attr->model_number_len; 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number = attr->serial_number; 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number_len = attr->serial_number_len; 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name = attr->dev_name; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name_len = attr->dev_name_len; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->primary_dev_type = attr->primary_dev_type; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_error) 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_error = 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_error); 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->dev_password_id) 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_password_id = 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->dev_password_id); 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_M2D, &data); 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECEIVED_M2D; 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m4(struct wps_data *wps, 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M4"); 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M4) { 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M4", wps->state); 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash1(wps, attr->r_hash1) || 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash2(wps, attr->r_hash2)) { 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9911f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m4_encr(decrypted, attr->version2 != NULL) < 0) { 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce1(wps, eattr.r_snonce1)) { 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M5; 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m6(struct wps_data *wps, 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M6"); 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M6) { 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M6", wps->state); 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10441f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m6_encr(decrypted, attr->version2 != NULL) < 0) { 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce2(wps, eattr.r_snonce2)) { 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1061c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (wps->wps->ap) 1062c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_AP_PIN_SUCCESS, 1063c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt NULL); 1064c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M7; 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m8(struct wps_data *wps, 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M8"); 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M8) { 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M8", wps->state); 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->ap_setup_locked) { 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here if special ap_setup_locked == 2 mode allowed the 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * protocol to continue beyond M2. This allows ER to learn the 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * current AP settings without changing them. 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11141f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m8_encr(decrypted, wps->wps->ap, 11151f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt attr->version2 != NULL) < 0) { 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_creds(wps, eattr.cred, eattr.cred_len, 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.num_cred, attr->version2 != NULL) || 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_ap_settings_e(wps, &eattr, decrypted, 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->version2 != NULL)) { 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_MSG_DONE; 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_msg(struct wps_data *wps, 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wps_process_res ret = WPS_CONTINUE; 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG"); 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) { 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (*attr.msg_type) { 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2: 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2(msg) < 0) 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2(wps, msg, &attr); 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2D: 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2d(msg) < 0) 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2d(wps, &attr); 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M4: 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m4(msg) < 0) 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m4(wps, msg, &attr); 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M4, wps->config_error, 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M6: 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m6(msg) < 0) 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m6(wps, msg, &attr); 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M6, wps->config_error, 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M8: 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m8(msg) < 0) 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m8(wps, msg, &attr); 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M8, wps->config_error, 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d", 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Save a copy of the last message for Authenticator derivation if we 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * are continuing. However, skip M2D since it is not authenticated and 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * neither is the ACK/NACK response frame. This allows the possibly 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * following M2 to be processed correctly by using the previously sent 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * M1 in Authenticator derivation. 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_CONTINUE && *attr.msg_type != WPS_M2D) { 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_ack(struct wps_data *wps, 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK"); 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_ACK) { 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0)) 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) { 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state == RECV_ACK && wps->wps->ap) { 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: External Registrar registration " 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "completed successfully"); 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_success_event(wps->wps); 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_DONE; 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_nack(struct wps_data *wps, 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_error; 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK"); 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_NACK) { 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0)) 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Registrar Nonce", 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.registrar_nonce, WPS_NONCE_LEN); 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Registrar Nonce", 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) { 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Enrollee Nonce", 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.enrollee_nonce, WPS_NONCE_LEN); 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Enrollee Nonce", 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.config_error == NULL) { 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute " 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "in WSC_NACK"); 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_error = WPA_GET_BE16(attr.config_error); 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar terminated negotiation with " 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Configuration Error %d", config_error); 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M4: 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M3, config_error, 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M6: 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M5, config_error, 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M8: 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M7, config_error, 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication); 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Followed by NACK if Enrollee is Supplicant or EAP-Failure if 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Enrollee is Authenticator */ 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtenum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code op_code, 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu " 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "op_code=%d)", 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(msg), op_code); 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (op_code == WSC_UPnP) { 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Determine the OpCode based on message type attribute */ 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) { 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type == WPS_WSC_ACK) 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_ACK; 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (*attr.msg_type == WPS_WSC_NACK) 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_NACK; 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (op_code) { 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_MSG: 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_UPnP: 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_msg(wps, msg); 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_ACK: 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_ack(msg) < 0) 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_ack(wps, msg); 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_NACK: 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_nack(msg) < 0) 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_nack(wps, msg); 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code); 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1383