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_wps_state(struct wps_data *wps, struct wpabuf *msg) 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 state; 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state = wps->wps->wps_state; 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state = WPS_STATE_NOT_CONFIGURED; 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)", 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt state); 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_WPS_STATE); 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 1); 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, state); 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_hash(struct wps_data *wps, struct wpabuf *msg) 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *hash; 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0) 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-S1", wps->snonce, WPS_SECRET_NONCE_LEN); 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-S2", 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN); 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) { 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for " 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "E-Hash derivation"); 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-Hash1"); 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_HASH1); 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, SHA256_MAC_LEN); 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash = wpabuf_put(msg, SHA256_MAC_LEN); 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */ 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wps->snonce; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", hash, SHA256_MAC_LEN); 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-Hash2"); 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_HASH2); 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, SHA256_MAC_LEN); 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hash = wpabuf_put(msg, SHA256_MAC_LEN); 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */ 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", hash, SHA256_MAC_LEN); 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_snonce1(struct wps_data *wps, struct wpabuf *msg) 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-SNonce1"); 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_SNONCE1); 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN); 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN); 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_e_snonce2(struct wps_data *wps, struct wpabuf *msg) 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * E-SNonce2"); 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_E_SNONCE2); 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN); 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN, 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m1(struct wps_data *wps) 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_methods; 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (random_get_bytes(wps->nonce_e, WPS_NONCE_LEN) < 0) 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce", 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M1"); 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods = wps->wps->config_methods; 12087fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen if (wps->wps->ap && !wps->pbc_in_m1 && 12187fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen (wps->dev_password_len != 0 || 12287fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen (config_methods & WPS_CONFIG_DISPLAY))) { 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * These are the methods that the AP supports as an Enrollee 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * for adding external Registrars, so remove PushButton. 12687fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * 12787fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * As a workaround for Windows 7 mechanism for probing WPS 12887fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * capabilities from M1, leave PushButton option if no PIN 12987fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * method is available or if WPS configuration enables PBC 13087fd279308af3f806848c8f2ab65ef18c6ac4c30Jouni Malinen * workaround. 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods &= ~WPS_CONFIG_PUSHBUTTON; 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON | 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_CONFIG_PHY_PUSHBUTTON); 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M1) || 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_uuid_e(msg, wps->uuid_e) || 1404b06059785b935dd1f4f09314e4e12c417d2c6a4Dmitry Shmidt wps_build_mac_addr(msg, wps->mac_addr_e) || 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_public_key(wps, msg) || 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_auth_type_flags(wps, msg) || 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_type_flags(wps, msg) || 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_conn_type_flags(wps, msg) || 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_config_methods(msg, config_methods) || 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wps_state(wps, msg) || 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_device_attrs(&wps->wps->dev, msg) || 149b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_build_rf_bands(&wps->wps->dev, msg, 150b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->wps->rf_band_cb(wps->wps->cb_ctx)) || 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_assoc_state(wps, msg) || 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_dev_password_id(msg, wps->dev_pw_id) || 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_config_error(msg, WPS_CFG_NO_ERROR) || 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_os_version(&wps->wps->dev, msg) || 15504949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 15604949598a23f501be6eec21697465fd46a28840aDmitry Shmidt wps_build_vendor_ext_m1(&wps->wps->dev, msg)) { 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m3(struct wps_data *wps) 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M3"); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dev_password == NULL) { 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Device Password available"); 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_derive_psk(wps, wps->dev_password, wps->dev_password_len); 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (wps->wps->ap && random_pool_ready() != 1) { 179661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt wpa_printf(MSG_INFO, 180661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt "WPS: Not enough entropy in random pool to proceed - do not allow AP PIN to be used"); 181661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt return NULL; 182661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt } 183661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M3) || 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_hash(wps, msg) || 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M4; 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m5(struct wps_data *wps) 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M5"); 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(200); 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M5) || 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce1(wps, plain) || 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M6; 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_ssid(struct wps_data *wps, struct wpabuf *msg) 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * SSID"); 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_SSID); 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->ssid_len); 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->ssid, wps->wps->ssid_len); 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_auth_type(struct wps_data *wps, struct wpabuf *msg) 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 250432d603c922e970f55866c63212d29c997438977Dmitry Shmidt u16 auth_type = wps->wps->ap_auth_type; 251432d603c922e970f55866c63212d29c997438977Dmitry Shmidt 252432d603c922e970f55866c63212d29c997438977Dmitry Shmidt /* 253432d603c922e970f55866c63212d29c997438977Dmitry Shmidt * Work around issues with Windows 7 WPS implementation not liking 254432d603c922e970f55866c63212d29c997438977Dmitry Shmidt * multiple Authentication Type bits in M7 AP Settings attribute by 255432d603c922e970f55866c63212d29c997438977Dmitry Shmidt * showing only the most secure option from current configuration. 256432d603c922e970f55866c63212d29c997438977Dmitry Shmidt */ 257432d603c922e970f55866c63212d29c997438977Dmitry Shmidt if (auth_type & WPS_AUTH_WPA2PSK) 258432d603c922e970f55866c63212d29c997438977Dmitry Shmidt auth_type = WPS_AUTH_WPA2PSK; 259432d603c922e970f55866c63212d29c997438977Dmitry Shmidt else if (auth_type & WPS_AUTH_WPAPSK) 260432d603c922e970f55866c63212d29c997438977Dmitry Shmidt auth_type = WPS_AUTH_WPAPSK; 261432d603c922e970f55866c63212d29c997438977Dmitry Shmidt else if (auth_type & WPS_AUTH_OPEN) 262432d603c922e970f55866c63212d29c997438977Dmitry Shmidt auth_type = WPS_AUTH_OPEN; 263432d603c922e970f55866c63212d29c997438977Dmitry Shmidt 264432d603c922e970f55866c63212d29c997438977Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)", auth_type); 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_AUTH_TYPE); 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 267432d603c922e970f55866c63212d29c997438977Dmitry Shmidt wpabuf_put_be16(msg, auth_type); 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg) 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 274432d603c922e970f55866c63212d29c997438977Dmitry Shmidt u16 encr_type = wps->wps->ap_encr_type; 275432d603c922e970f55866c63212d29c997438977Dmitry Shmidt 276432d603c922e970f55866c63212d29c997438977Dmitry Shmidt /* 277432d603c922e970f55866c63212d29c997438977Dmitry Shmidt * Work around issues with Windows 7 WPS implementation not liking 278432d603c922e970f55866c63212d29c997438977Dmitry Shmidt * multiple Encryption Type bits in M7 AP Settings attribute by 279432d603c922e970f55866c63212d29c997438977Dmitry Shmidt * showing only the most secure option from current configuration. 280432d603c922e970f55866c63212d29c997438977Dmitry Shmidt */ 281432d603c922e970f55866c63212d29c997438977Dmitry Shmidt if (wps->wps->ap_auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) { 282432d603c922e970f55866c63212d29c997438977Dmitry Shmidt if (encr_type & WPS_ENCR_AES) 283432d603c922e970f55866c63212d29c997438977Dmitry Shmidt encr_type = WPS_ENCR_AES; 284432d603c922e970f55866c63212d29c997438977Dmitry Shmidt else if (encr_type & WPS_ENCR_TKIP) 285432d603c922e970f55866c63212d29c997438977Dmitry Shmidt encr_type = WPS_ENCR_TKIP; 286432d603c922e970f55866c63212d29c997438977Dmitry Shmidt } 287432d603c922e970f55866c63212d29c997438977Dmitry Shmidt 288432d603c922e970f55866c63212d29c997438977Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)", encr_type); 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_ENCR_TYPE); 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 291432d603c922e970f55866c63212d29c997438977Dmitry Shmidt wpabuf_put_be16(msg, encr_type); 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_network_key(struct wps_data *wps, struct wpabuf *msg) 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 298b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if ((wps->wps->ap_auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) && 299b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps->wps->network_key_len == 0) { 300b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt char hex[65]; 301b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt u8 psk[32]; 302b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt /* Generate a random per-device PSK */ 303661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (random_pool_ready() != 1 || 304661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt random_get_bytes(psk, sizeof(psk)) < 0) { 305661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt wpa_printf(MSG_INFO, 306661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt "WPS: Could not generate random PSK"); 307b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return -1; 308661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt } 309b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK", 310b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt psk, sizeof(psk)); 311b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%u)", 312b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt (unsigned int) wps->new_psk_len * 2); 313b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_snprintf_hex(hex, sizeof(hex), psk, sizeof(psk)); 314b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpabuf_put_be16(msg, ATTR_NETWORK_KEY); 315b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpabuf_put_be16(msg, sizeof(psk) * 2); 316b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpabuf_put_data(msg, hex, sizeof(psk) * 2); 317b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (wps->wps->registrar) { 318b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps_cb_new_psk(wps->wps->registrar, 319b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps->peer_dev.mac_addr, 320b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps->p2p_dev_addr, psk, sizeof(psk)); 321b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 322b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return 0; 323b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 324b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 32596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%u)", 32696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt (unsigned int) wps->wps->network_key_len); 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_NETWORK_KEY); 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->network_key_len); 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->network_key, wps->wps->network_key_len); 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_mac_addr(struct wps_data *wps, struct wpabuf *msg) 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * MAC Address (AP BSSID)"); 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_MAC_ADDR); 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ETH_ALEN); 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->dev.mac_addr, ETH_ALEN); 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *plain) 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 34696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt const u8 *start, *end; 34796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt int ret; 34896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap_settings) { 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * AP Settings (pre-configured)"); 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(plain, wps->wps->ap_settings, 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->ap_settings_len); 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 35696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * AP Settings based on current configuration"); 35796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt start = wpabuf_put(plain, 0); 35896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt ret = wps_build_cred_ssid(wps, plain) || 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_mac_addr(wps, plain) || 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_auth_type(wps, plain) || 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_encr_type(wps, plain) || 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_network_key(wps, plain); 36396be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt end = wpabuf_put(plain, 0); 36496be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt 36596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: Plaintext AP Settings", 36696be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt start, end - start); 36796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt 36896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt return ret; 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m7(struct wps_data *wps) 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M7"); 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(500 + wps->wps->ap_settings_len); 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000 + wps->wps->ap_settings_len); 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M7) || 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce2(wps, plain) || 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (wps->wps->ap && wps_build_ap_settings(wps, plain)) || 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->registrar) { 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * If the Registrar is only learning our current configuration, 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it may not continue protocol run to successful completion. 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Store information here to make sure it remains available. 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_device_store(wps->wps->registrar, &wps->peer_dev, 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->uuid_r); 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M8; 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_wsc_done(struct wps_data *wps) 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_Done"); 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_WSC_DONE) || 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0)) { 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_ACK; 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 440b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_success_event(wps->wps, wps->peer_dev.mac_addr); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code *op_code) 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M1: 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m1(wps); 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M3: 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m3(wps); 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M5: 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m5(wps); 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M7: 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m7(wps); 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECEIVED_M2D: 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) { 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_ack(wps); 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_ACK; 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg) { 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Another M2/M2D may be received */ 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_WSC_NACK: 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_MSG_DONE: 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_done(wps); 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_Done; 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building " 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "a message", wps->state); 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = NULL; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*op_code == WSC_MSG && msg) { 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce) 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_nonce == NULL) { 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received"); 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->nonce_r, r_nonce, WPS_NONCE_LEN); 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce", 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce) 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (e_nonce == NULL) { 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received"); 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->nonce_e, e_nonce, WPS_NONCE_LEN) != 0) { 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Enrollee Nonce received"); 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_uuid_r(struct wps_data *wps, const u8 *uuid_r) 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (uuid_r == NULL) { 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No UUID-R received"); 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->uuid_r, uuid_r, WPS_UUID_LEN); 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN); 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_pubkey(struct wps_data *wps, const u8 *pk, 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pk_len) 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pk == NULL || pk_len == 0) { 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Public Key received"); 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 561cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (wps->peer_pubkey_hash_set) { 562cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt u8 hash[WPS_HASH_LEN]; 563cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt sha256_vector(1, &pk, &pk_len, hash); 564c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(hash, wps->peer_pubkey_hash, 565c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt WPS_OOB_PUBKEY_HASH_LEN) != 0) { 566cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_printf(MSG_ERROR, "WPS: Public Key hash mismatch"); 567cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received public key", 568cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pk, pk_len); 569cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Calculated public key " 570cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "hash", hash, WPS_OOB_PUBKEY_HASH_LEN); 571cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected public key hash", 572cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->peer_pubkey_hash, 573cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt WPS_OOB_PUBKEY_HASH_LEN); 574cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->config_error = WPS_CFG_PUBLIC_KEY_HASH_MISMATCH; 575cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return -1; 576cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 577cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 578cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->dh_pubkey_r); 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dh_pubkey_r = wpabuf_alloc_copy(pk, pk_len); 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_r == NULL) 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_derive_keys(wps) < 0) 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash1(struct wps_data *wps, const u8 *r_hash1) 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash1 == NULL) { 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash1 received"); 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash1, r_hash1, WPS_HASH_LEN); 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", wps->peer_hash1, WPS_HASH_LEN); 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash2(struct wps_data *wps, const u8 *r_hash2) 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash2 == NULL) { 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash2 received"); 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash2, r_hash2, WPS_HASH_LEN); 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", wps->peer_hash2, WPS_HASH_LEN); 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce1(struct wps_data *wps, const u8 *r_snonce1) 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce1 == NULL) { 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce1 received"); 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce1", r_snonce1, 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */ 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce1; 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 644c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) { 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash1 derived from R-S1 does " 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 648b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 1, wps->peer_dev.mac_addr); 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the first " 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce2(struct wps_data *wps, const u8 *r_snonce2) 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce2 == NULL) { 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce2 received"); 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce2", r_snonce2, 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */ 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce2; 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 684c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) { 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash2 derived from R-S2 does " 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 688b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 2, wps->peer_dev.mac_addr); 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the second " 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_cred_e(struct wps_data *wps, const u8 *cred, 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len, int wps2) 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf msg; 704d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt int ret = 0; 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received Credential"); 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&wps->cred, 0, sizeof(wps->cred)); 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&msg, cred, cred_len); 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(&msg, &attr) < 0 || 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_cred(&attr, &wps->cred)) 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the Credential (" 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(wps->cred.mac_addr), 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(wps->cred.encr_type & 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) { 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->cred.encr_type & WPS_ENCR_WEP) { 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential " 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -2; 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential due to " 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", wps->cred.encr_type); 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = cred - 4; 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = cred_len + 4; 752d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt ret = wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred); 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = NULL; 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = 0; 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 757d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt return ret; 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_creds(struct wps_data *wps, const u8 *cred[], 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len[], size_t num_cred, int wps2) 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ok = 0; 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (num_cred == 0) { 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Credential attributes " 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < num_cred; i++) { 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wps_process_cred_e(wps, cred[i], cred_len[i], wps2); 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == 0) 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ok++; 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (res == -2) 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: WEP credential skipped"); 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ok == 0) { 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No valid Credential attribute " 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_ap_settings_e(struct wps_data *wps, 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr, 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *attrs, int wps2) 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_credential cred; 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wps->wps->ap) 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_ap_settings(attr, &cred) < 0) 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Received new AP configuration from " 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Registrar"); 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the AP Settings (" 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(cred.mac_addr), 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(cred.encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cred.encr_type & WPS_ENCR_WEP) { 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings " 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to " 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", cred.encr_type); 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_ENCR_TKIP || 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS-STRICT: Invalid WSC 2.0 " 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AP Settings: WPA-Personal/TKIP only"); 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED; 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == WPS_ENCR_TKIP) 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> " 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TKIP+AES"); 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.encr_type |= WPS_ENCR_AES; 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> " 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "WPAPSK+WPA2PSK"); 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.auth_type |= WPS_AUTH_WPA2PSK; 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr = wpabuf_head(attrs); 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr_len = wpabuf_len(attrs); 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->cred_cb(wps->wps->cb_ctx, &cred); 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 887f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic int wps_process_dev_pw_id(struct wps_data *wps, const u8 *dev_pw_id) 888f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 889f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u16 id; 890f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 891f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (dev_pw_id == NULL) { 892f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Device Password ID"); 893f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 894f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 895f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 896f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt id = WPA_GET_BE16(dev_pw_id); 897f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (wps->dev_pw_id == id) { 898f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Device Password ID %u", id); 899f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 900f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 901f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 9028bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt#ifdef CONFIG_P2P 9038bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt if ((id == DEV_PW_DEFAULT && 9048bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt wps->dev_pw_id == DEV_PW_REGISTRAR_SPECIFIED) || 9058bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt (id == DEV_PW_REGISTRAR_SPECIFIED && 9068bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt wps->dev_pw_id == DEV_PW_DEFAULT)) { 9078bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt /* 9088bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * Common P2P use cases indicate whether the PIN is from the 9098bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * client or GO using Device Password Id in M1/M2 in a way that 9108bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * does not look fully compliant with WSC specification. Anyway, 9118bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * this is deployed and needs to be allowed, so ignore changes 9128bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * between Registrar-Specified and Default PIN. 9138bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt */ 9148bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Allow PIN Device Password ID " 9158bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt "change"); 9168bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt return 0; 9178bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt } 9188bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt#endif /* CONFIG_P2P */ 9198bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt 920f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar trying to change Device Password " 921f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt "ID from %u to %u", wps->dev_pw_id, id); 922f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 9235605286c30e1701491bd3af974ae423727750eddDmitry Shmidt if (wps->dev_pw_id == DEV_PW_PUSHBUTTON && id == DEV_PW_DEFAULT) { 9245605286c30e1701491bd3af974ae423727750eddDmitry Shmidt wpa_printf(MSG_DEBUG, 9255605286c30e1701491bd3af974ae423727750eddDmitry Shmidt "WPS: Workaround - ignore PBC-to-PIN change"); 9265605286c30e1701491bd3af974ae423727750eddDmitry Shmidt return 0; 9275605286c30e1701491bd3af974ae423727750eddDmitry Shmidt } 9285605286c30e1701491bd3af974ae423727750eddDmitry Shmidt 929f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (wps->alt_dev_password && wps->alt_dev_pw_id == id) { 930f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Found a matching Device Password"); 931c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt bin_clear_free(wps->dev_password, wps->dev_password_len); 932f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->dev_pw_id = wps->alt_dev_pw_id; 933f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->dev_password = wps->alt_dev_password; 934f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->dev_password_len = wps->alt_dev_password_len; 935f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->alt_dev_password = NULL; 936f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->alt_dev_password_len = 0; 937f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 938f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 939f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 940f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 941f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 942f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 943f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2(struct wps_data *wps, 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2"); 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2", wps->state); 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_registrar_nonce(wps, attr->registrar_nonce) || 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 959f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps_process_uuid_r(wps, attr->uuid_r) || 960f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps_process_dev_pw_id(wps, attr->dev_password_id)) { 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here on an AP as an Enrollee if AP Setup is locked unless the 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * special locked mode is used to allow protocol run up to M7 in order 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * to support external Registrars that only learn the current AP 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * configuration without changing it. 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ((wps->wps->ap_setup_locked && wps->wps->ap_setup_locked != 2) || 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dev_password == NULL)) { 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_pubkey(wps, attr->public_key, attr->public_key_len) || 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_device_attrs(&wps->peer_dev, attr)) { 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 988cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#ifdef CONFIG_WPS_NFC 989cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (wps->peer_pubkey_hash_set) { 990cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt struct wpabuf *decrypted; 991cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt struct wps_parse_attr eattr; 992cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 993cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 994cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt attr->encr_settings_len); 995cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (decrypted == NULL) { 996cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt " 997cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "Encrypted Settings attribute"); 998cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->state = SEND_WSC_NACK; 999cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return WPS_CONTINUE; 1000cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1001cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 1002cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted " 1003cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "Settings attribute"); 1004cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 1005cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, 1006cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt eattr.key_wrap_auth) || 1007cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps_process_creds(wps, eattr.cred, eattr.cred_len, 1008cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt eattr.num_cred, attr->version2 != NULL)) { 1009cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpabuf_free(decrypted); 1010cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->state = SEND_WSC_NACK; 1011cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return WPS_CONTINUE; 1012cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1013cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpabuf_free(decrypted); 1014cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 1015cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->state = WPS_MSG_DONE; 1016cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return WPS_CONTINUE; 1017cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 1018cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#endif /* CONFIG_WPS_NFC */ 1019cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M3; 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2d(struct wps_data *wps, 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2D"); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2D", wps->state); 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer", 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->manufacturer, attr->manufacturer_len); 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name", 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_name, attr->model_name_len); 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number", 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_number, attr->model_number_len); 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number", 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->serial_number, attr->serial_number_len); 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name", 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->dev_name, attr->dev_name_len); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->event_cb) { 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt union wps_event_data data; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_event_m2d *m2d = &data.m2d; 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&data, 0, sizeof(data)); 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_methods) 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_methods = 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_methods); 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer = attr->manufacturer; 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer_len = attr->manufacturer_len; 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name = attr->model_name; 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name_len = attr->model_name_len; 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number = attr->model_number; 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number_len = attr->model_number_len; 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number = attr->serial_number; 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number_len = attr->serial_number_len; 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name = attr->dev_name; 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name_len = attr->dev_name_len; 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->primary_dev_type = attr->primary_dev_type; 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_error) 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_error = 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_error); 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->dev_password_id) 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_password_id = 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->dev_password_id); 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_M2D, &data); 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECEIVED_M2D; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m4(struct wps_data *wps, 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M4"); 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M4) { 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M4", wps->state); 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash1(wps, attr->r_hash1) || 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash2(wps, attr->r_hash2)) { 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11131f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m4_encr(decrypted, attr->version2 != NULL) < 0) { 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce1(wps, eattr.r_snonce1)) { 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M5; 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m6(struct wps_data *wps, 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M6"); 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M6) { 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M6", wps->state); 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11661f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m6_encr(decrypted, attr->version2 != NULL) < 0) { 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce2(wps, eattr.r_snonce2)) { 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1183c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (wps->wps->ap) 1184c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_AP_PIN_SUCCESS, 1185c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt NULL); 1186c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M7; 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m8(struct wps_data *wps, 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M8"); 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M8) { 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M8", wps->state); 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->ap_setup_locked) { 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here if special ap_setup_locked == 2 mode allowed the 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * protocol to continue beyond M2. This allows ER to learn the 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * current AP settings without changing them. 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12361f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m8_encr(decrypted, wps->wps->ap, 12371f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt attr->version2 != NULL) < 0) { 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_creds(wps, eattr.cred, eattr.cred_len, 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.num_cred, attr->version2 != NULL) || 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_ap_settings_e(wps, &eattr, decrypted, 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->version2 != NULL)) { 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_MSG_DONE; 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_msg(struct wps_data *wps, 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wps_process_res ret = WPS_CONTINUE; 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG"); 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 127461d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) { 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (*attr.msg_type) { 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2: 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2(msg) < 0) 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2(wps, msg, &attr); 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2D: 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2d(msg) < 0) 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2d(wps, &attr); 12958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M4: 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m4(msg) < 0) 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m4(wps, msg, &attr); 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M4, wps->config_error, 1302b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, 1303b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->peer_dev.mac_addr); 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M6: 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m6(msg) < 0) 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m6(wps, msg, &attr); 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M6, wps->config_error, 1311b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, 1312b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->peer_dev.mac_addr); 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M8: 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m8(msg) < 0) 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m8(wps, msg, &attr); 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M8, wps->config_error, 1320b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, 1321b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->peer_dev.mac_addr); 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d", 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Save a copy of the last message for Authenticator derivation if we 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * are continuing. However, skip M2D since it is not authenticated and 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * neither is the ACK/NACK response frame. This allows the possibly 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * following M2 to be processed correctly by using the previously sent 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * M1 in Authenticator derivation. 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_CONTINUE && *attr.msg_type != WPS_M2D) { 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_ack(struct wps_data *wps, 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK"); 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 13588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_ACK) { 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 136961d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0) 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 137661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) { 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state == RECV_ACK && wps->wps->ap) { 13828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: External Registrar registration " 13838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "completed successfully"); 1384b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_success_event(wps->wps, wps->peer_dev.mac_addr); 13858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 13868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_DONE; 13878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_nack(struct wps_data *wps, 13948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 13958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 13978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_error; 13988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK"); 14008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 14028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 14058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 14068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_NACK) { 14108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 14118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 14128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 141661d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0) 14178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 14188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 14198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Registrar Nonce", 14208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.registrar_nonce, WPS_NONCE_LEN); 14218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Registrar Nonce", 14228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 14238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 142761d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) { 14288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 14298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Enrollee Nonce", 14308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.enrollee_nonce, WPS_NONCE_LEN); 14318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Enrollee Nonce", 14328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 14338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.config_error == NULL) { 14378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute " 14388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "in WSC_NACK"); 14398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_error = WPA_GET_BE16(attr.config_error); 14438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar terminated negotiation with " 14448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Configuration Error %d", config_error); 14458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 14478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M4: 14488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M3, config_error, 1449b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, wps->peer_dev.mac_addr); 14508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M6: 14528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M5, config_error, 1453b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, wps->peer_dev.mac_addr); 14548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M8: 14568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M7, config_error, 1457b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, wps->peer_dev.mac_addr); 14588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 14608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Followed by NACK if Enrollee is Supplicant or EAP-Failure if 14648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Enrollee is Authenticator */ 14658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 14668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtenum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 14728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code op_code, 14738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 14748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu " 14778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "op_code=%d)", 14788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(msg), op_code); 14798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (op_code == WSC_UPnP) { 14818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Determine the OpCode based on message type attribute */ 14828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 14838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) { 14848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type == WPS_WSC_ACK) 14858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_ACK; 14868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (*attr.msg_type == WPS_WSC_NACK) 14878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_NACK; 14888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (op_code) { 14928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_MSG: 14938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_UPnP: 14948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_msg(wps, msg); 14958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_ACK: 14968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_ack(msg) < 0) 14978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_ack(wps, msg); 14998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_NACK: 15008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_nack(msg) < 0) 15018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 15028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_nack(wps, msg); 15038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 15048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code); 15058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 15068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 15078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1508