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{ 25096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)", 25196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wps->wps->ap_auth_type); 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_AUTH_TYPE); 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 25496be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpabuf_put_be16(msg, wps->wps->ap_auth_type); 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg) 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 26196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)", 26296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wps->wps->ap_encr_type); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_ENCR_TYPE); 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); 26596be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpabuf_put_be16(msg, wps->wps->ap_encr_type); 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_network_key(struct wps_data *wps, struct wpabuf *msg) 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 272b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if ((wps->wps->ap_auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) && 273b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps->wps->network_key_len == 0) { 274b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt char hex[65]; 275b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt u8 psk[32]; 276b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt /* Generate a random per-device PSK */ 277661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt if (random_pool_ready() != 1 || 278661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt random_get_bytes(psk, sizeof(psk)) < 0) { 279661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt wpa_printf(MSG_INFO, 280661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt "WPS: Could not generate random PSK"); 281b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return -1; 282661b4f78e48c697429dc46154a4125892c001718Dmitry Shmidt } 283b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK", 284b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt psk, sizeof(psk)); 285b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%u)", 286b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt (unsigned int) wps->new_psk_len * 2); 287b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpa_snprintf_hex(hex, sizeof(hex), psk, sizeof(psk)); 288b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpabuf_put_be16(msg, ATTR_NETWORK_KEY); 289b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpabuf_put_be16(msg, sizeof(psk) * 2); 290b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wpabuf_put_data(msg, hex, sizeof(psk) * 2); 291b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt if (wps->wps->registrar) { 292b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps_cb_new_psk(wps->wps->registrar, 293b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps->peer_dev.mac_addr, 294b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt wps->p2p_dev_addr, psk, sizeof(psk)); 295b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 296b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt return 0; 297b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt } 298b36ed7cd946148d829f311de8fe53ea3ffaaffe3Dmitry Shmidt 29996be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%u)", 30096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt (unsigned int) wps->wps->network_key_len); 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_NETWORK_KEY); 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, wps->wps->network_key_len); 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->network_key, wps->wps->network_key_len); 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_cred_mac_addr(struct wps_data *wps, struct wpabuf *msg) 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * MAC Address (AP BSSID)"); 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ATTR_MAC_ADDR); 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, ETH_ALEN); 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(msg, wps->wps->dev.mac_addr, ETH_ALEN); 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *plain) 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 32096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt const u8 *start, *end; 32196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt int ret; 32296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap_settings) { 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * AP Settings (pre-configured)"); 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(plain, wps->wps->ap_settings, 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->ap_settings_len); 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 33096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: * AP Settings based on current configuration"); 33196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt start = wpabuf_put(plain, 0); 33296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt ret = wps_build_cred_ssid(wps, plain) || 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_mac_addr(wps, plain) || 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_auth_type(wps, plain) || 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_encr_type(wps, plain) || 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_cred_network_key(wps, plain); 33796be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt end = wpabuf_put(plain, 0); 33896be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt 33996be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: Plaintext AP Settings", 34096be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt start, end - start); 34196be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt 34296be6222df414a7dde5c5b1b72df22e67b1a77fcDmitry Shmidt return ret; 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_m7(struct wps_data *wps) 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg, *plain; 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message M7"); 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt plain = wpabuf_alloc(500 + wps->wps->ap_settings_len); 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (plain == NULL) 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000 + wps->wps->ap_settings_len); 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) { 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_M7) || 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_e_snonce2(wps, plain) || 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (wps->wps->ap && wps_build_ap_settings(wps, plain)) || 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_key_wrap_auth(wps, plain) || 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_encr_settings(wps, msg, plain) || 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0) || 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_authenticator(wps, msg)) { 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(plain); 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->registrar) { 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * If the Registrar is only learning our current configuration, 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it may not continue protocol run to successful completion. 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Store information here to make sure it remains available. 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_device_store(wps->wps->registrar, &wps->peer_dev, 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->uuid_r); 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M8; 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * wps_build_wsc_done(struct wps_data *wps) 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_Done"); 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wpabuf_alloc(1000); 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_build_version(msg) || 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_msg_type(msg, WPS_WSC_DONE) || 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_enrollee_nonce(wps, msg) || 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_registrar_nonce(wps, msg) || 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_build_wfa_ext(msg, 0, NULL, 0)) { 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_ACK; 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else { 414b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_success_event(wps->wps, wps->peer_dev.mac_addr); 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code *op_code) 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M1: 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m1(wps); 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M3: 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m3(wps); 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M5: 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m5(wps); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_M7: 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_m7(wps); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_MSG; 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECEIVED_M2D: 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) { 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_ack(wps); 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_ACK; 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg) { 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Another M2/M2D may be received */ 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECV_M2; 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case SEND_WSC_NACK: 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_nack(wps); 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_NACK; 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_MSG_DONE: 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = wps_build_wsc_done(wps); 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *op_code = WSC_Done; 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building " 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "a message", wps->state); 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = NULL; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*op_code == WSC_MSG && msg) { 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce) 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_nonce == NULL) { 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received"); 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->nonce_r, r_nonce, WPS_NONCE_LEN); 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce", 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce) 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (e_nonce == NULL) { 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received"); 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->nonce_e, e_nonce, WPS_NONCE_LEN) != 0) { 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Enrollee Nonce received"); 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_uuid_r(struct wps_data *wps, const u8 *uuid_r) 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (uuid_r == NULL) { 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No UUID-R received"); 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->uuid_r, uuid_r, WPS_UUID_LEN); 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN); 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_pubkey(struct wps_data *wps, const u8 *pk, 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t pk_len) 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pk == NULL || pk_len == 0) { 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Public Key received"); 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 535cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (wps->peer_pubkey_hash_set) { 536cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt u8 hash[WPS_HASH_LEN]; 537cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt sha256_vector(1, &pk, &pk_len, hash); 538c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(hash, wps->peer_pubkey_hash, 539c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt WPS_OOB_PUBKEY_HASH_LEN) != 0) { 540cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_printf(MSG_ERROR, "WPS: Public Key hash mismatch"); 541cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received public key", 542cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt pk, pk_len); 543cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Calculated public key " 544cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "hash", hash, WPS_OOB_PUBKEY_HASH_LEN); 545cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected public key hash", 546cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->peer_pubkey_hash, 547cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt WPS_OOB_PUBKEY_HASH_LEN); 548cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->config_error = WPS_CFG_PUBLIC_KEY_HASH_MISMATCH; 549cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return -1; 550cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 551cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 552cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->dh_pubkey_r); 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dh_pubkey_r = wpabuf_alloc_copy(pk, pk_len); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->dh_pubkey_r == NULL) 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_derive_keys(wps) < 0) 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash1(struct wps_data *wps, const u8 *r_hash1) 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash1 == NULL) { 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash1 received"); 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash1, r_hash1, WPS_HASH_LEN); 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", wps->peer_hash1, WPS_HASH_LEN); 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_hash2(struct wps_data *wps, const u8 *r_hash2) 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_hash2 == NULL) { 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-Hash2 received"); 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(wps->peer_hash2, r_hash2, WPS_HASH_LEN); 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", wps->peer_hash2, WPS_HASH_LEN); 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce1(struct wps_data *wps, const u8 *r_snonce1) 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce1 == NULL) { 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce1 received"); 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce1", r_snonce1, 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */ 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce1; 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk1; 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 618c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) { 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash1 derived from R-S1 does " 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 622b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 1, wps->peer_dev.mac_addr); 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the first " 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_r_snonce2(struct wps_data *wps, const u8 *r_snonce2) 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 hash[SHA256_MAC_LEN]; 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[4]; 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[4]; 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (r_snonce2 == NULL) { 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No R-SNonce2 received"); 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce2", r_snonce2, 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_SECRET_NONCE_LEN); 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */ 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = r_snonce2; 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = WPS_SECRET_NONCE_LEN; 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = wps->psk2; 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = WPS_PSK_LEN; 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[2] = wpabuf_head(wps->dh_pubkey_e); 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[2] = wpabuf_len(wps->dh_pubkey_e); 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[3] = wpabuf_head(wps->dh_pubkey_r); 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[3] = wpabuf_len(wps->dh_pubkey_r); 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash); 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 658c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt if (os_memcmp_const(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) { 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: R-Hash2 derived from R-S2 does " 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "not match with the pre-committed value"); 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE; 662b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_pwd_auth_fail_event(wps->wps, 1, 2, wps->peer_dev.mac_addr); 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the second " 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "half of the device password"); 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_cred_e(struct wps_data *wps, const u8 *cred, 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len, int wps2) 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf msg; 678d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt int ret = 0; 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received Credential"); 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&wps->cred, 0, sizeof(wps->cred)); 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&msg, cred, cred_len); 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(&msg, &attr) < 0 || 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_cred(&attr, &wps->cred)) 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(wps->cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the Credential (" 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(wps->cred.mac_addr), 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(wps->cred.encr_type & 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) { 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->cred.encr_type & WPS_ENCR_WEP) { 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential " 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -2; 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject Credential due to " 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", wps->cred.encr_type); 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = cred - 4; 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = cred_len + 4; 726d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt ret = wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr = NULL; 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->cred.cred_attr_len = 0; 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 731d5e4923d04122f81300fa68fb07d64ede28fd44dDmitry Shmidt return ret; 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_creds(struct wps_data *wps, const u8 *cred[], 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t cred_len[], size_t num_cred, int wps2) 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ok = 0; 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap) 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (num_cred == 0) { 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Credential attributes " 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < num_cred; i++) { 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = wps_process_cred_e(wps, cred[i], cred_len[i], wps2); 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == 0) 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ok++; 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (res == -2) 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: WEP credential skipped"); 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ok == 0) { 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No valid Credential attribute " 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "received"); 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int wps_process_ap_settings_e(struct wps_data *wps, 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr, 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *attrs, int wps2) 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_credential cred; 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!wps->wps->ap) 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_ap_settings(attr, &cred) < 0) 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Received new AP configuration from " 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Registrar"); 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) != 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 0) { 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: MAC Address in the AP Settings (" 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MACSTR ") does not match with own address (" MACSTR 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ")", MAC2STR(cred.mac_addr), 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt MAC2STR(wps->wps->dev.mac_addr)); 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * In theory, this could be consider fatal error, but there are 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * number of deployed implementations using other address here 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * due to unclarity in the specification. For interoperability 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * reasons, allow this to be processed since we do not really 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * use the MAC Address information for anything. 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Do not accept incorrect " 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "MAC Address in AP Settings"); 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!(cred.encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (cred.encr_type & WPS_ENCR_WEP) { 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings " 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "due to WEP configuration"); 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED; 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to " 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "invalid encr_type 0x%x", cred.encr_type); 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef CONFIG_WPS_STRICT 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps2) { 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_ENCR_TKIP || 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "WPS-STRICT: Invalid WSC 2.0 " 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "AP Settings: WPA-Personal/TKIP only"); 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->error_indication = 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED; 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* CONFIG_WPS_STRICT */ 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == WPS_ENCR_TKIP) 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> " 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "TKIP+AES"); 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.encr_type |= WPS_ENCR_AES; 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) == 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPS_AUTH_WPAPSK) { 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> " 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "WPAPSK+WPA2PSK"); 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.auth_type |= WPS_AUTH_WPA2PSK; 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->cred_cb) { 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr = wpabuf_head(attrs); 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt cred.cred_attr_len = wpabuf_len(attrs); 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->cred_cb(wps->wps->cb_ctx, &cred); 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 861f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidtstatic int wps_process_dev_pw_id(struct wps_data *wps, const u8 *dev_pw_id) 862f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt{ 863f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt u16 id; 864f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 865f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (dev_pw_id == NULL) { 866f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Device Password ID"); 867f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 868f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 869f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 870f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt id = WPA_GET_BE16(dev_pw_id); 871f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (wps->dev_pw_id == id) { 872f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Device Password ID %u", id); 873f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 874f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 875f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 8768bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt#ifdef CONFIG_P2P 8778bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt if ((id == DEV_PW_DEFAULT && 8788bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt wps->dev_pw_id == DEV_PW_REGISTRAR_SPECIFIED) || 8798bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt (id == DEV_PW_REGISTRAR_SPECIFIED && 8808bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt wps->dev_pw_id == DEV_PW_DEFAULT)) { 8818bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt /* 8828bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * Common P2P use cases indicate whether the PIN is from the 8838bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * client or GO using Device Password Id in M1/M2 in a way that 8848bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * does not look fully compliant with WSC specification. Anyway, 8858bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * this is deployed and needs to be allowed, so ignore changes 8868bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt * between Registrar-Specified and Default PIN. 8878bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt */ 8888bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Allow PIN Device Password ID " 8898bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt "change"); 8908bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt return 0; 8918bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt } 8928bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt#endif /* CONFIG_P2P */ 8938bae4138a0356709720a96f3e50b4d734e532c12Dmitry Shmidt 894f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar trying to change Device Password " 895f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt "ID from %u to %u", wps->dev_pw_id, id); 896f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 8975605286c30e1701491bd3af974ae423727750eddDmitry Shmidt if (wps->dev_pw_id == DEV_PW_PUSHBUTTON && id == DEV_PW_DEFAULT) { 8985605286c30e1701491bd3af974ae423727750eddDmitry Shmidt wpa_printf(MSG_DEBUG, 8995605286c30e1701491bd3af974ae423727750eddDmitry Shmidt "WPS: Workaround - ignore PBC-to-PIN change"); 9005605286c30e1701491bd3af974ae423727750eddDmitry Shmidt return 0; 9015605286c30e1701491bd3af974ae423727750eddDmitry Shmidt } 9025605286c30e1701491bd3af974ae423727750eddDmitry Shmidt 903f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt if (wps->alt_dev_password && wps->alt_dev_pw_id == id) { 904f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Found a matching Device Password"); 905c28170251eb54dbf64a9074a07fee377587425b2Dmitry Shmidt bin_clear_free(wps->dev_password, wps->dev_password_len); 906f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->dev_pw_id = wps->alt_dev_pw_id; 907f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->dev_password = wps->alt_dev_password; 908f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->dev_password_len = wps->alt_dev_password_len; 909f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->alt_dev_password = NULL; 910f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps->alt_dev_password_len = 0; 911f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return 0; 912f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt } 913f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 914f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt return -1; 915f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt} 916f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 917f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2(struct wps_data *wps, 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2"); 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2", wps->state); 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_registrar_nonce(wps, attr->registrar_nonce) || 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 933f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps_process_uuid_r(wps, attr->uuid_r) || 934f86232838cf712377867cb42417c1613ab5dc425Dmitry Shmidt wps_process_dev_pw_id(wps, attr->dev_password_id)) { 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here on an AP as an Enrollee if AP Setup is locked unless the 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * special locked mode is used to allow protocol run up to M7 in order 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * to support external Registrars that only learn the current AP 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * configuration without changing it. 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ((wps->wps->ap_setup_locked && wps->wps->ap_setup_locked != 2) || 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->dev_password == NULL)) { 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_pubkey(wps, attr->public_key, attr->public_key_len) || 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_device_attrs(&wps->peer_dev, attr)) { 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 962cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#ifdef CONFIG_WPS_NFC 963cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (wps->peer_pubkey_hash_set) { 964cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt struct wpabuf *decrypted; 965cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt struct wps_parse_attr eattr; 966cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 967cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 968cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt attr->encr_settings_len); 969cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (decrypted == NULL) { 970cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt " 971cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "Encrypted Settings attribute"); 972cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->state = SEND_WSC_NACK; 973cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return WPS_CONTINUE; 974cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 975cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 976cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted " 977cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt "Settings attribute"); 978cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 979cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, 980cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt eattr.key_wrap_auth) || 981cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps_process_creds(wps, eattr.cred, eattr.cred_len, 982cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt eattr.num_cred, attr->version2 != NULL)) { 983cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpabuf_free(decrypted); 984cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->state = SEND_WSC_NACK; 985cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return WPS_CONTINUE; 986cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 987cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wpabuf_free(decrypted); 988cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 989cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt wps->state = WPS_MSG_DONE; 990cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt return WPS_CONTINUE; 991cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt } 992cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt#endif /* CONFIG_WPS_NFC */ 993cf32e60fa7e0d33fe1551a6dba8dcbbec47ea50eDmitry Shmidt 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M3; 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m2d(struct wps_data *wps, 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M2D"); 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M2) { 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M2D", wps->state); 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer", 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->manufacturer, attr->manufacturer_len); 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name", 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_name, attr->model_name_len); 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number", 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->model_number, attr->model_number_len); 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number", 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->serial_number, attr->serial_number_len); 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name", 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->dev_name, attr->dev_name_len); 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->event_cb) { 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt union wps_event_data data; 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_event_m2d *m2d = &data.m2d; 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&data, 0, sizeof(data)); 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_methods) 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_methods = 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_methods); 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer = attr->manufacturer; 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->manufacturer_len = attr->manufacturer_len; 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name = attr->model_name; 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_name_len = attr->model_name_len; 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number = attr->model_number; 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->model_number_len = attr->model_number_len; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number = attr->serial_number; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->serial_number_len = attr->serial_number_len; 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name = attr->dev_name; 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_name_len = attr->dev_name_len; 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->primary_dev_type = attr->primary_dev_type; 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->config_error) 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->config_error = 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->config_error); 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr->dev_password_id) 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt m2d->dev_password_id = 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt WPA_GET_BE16(attr->dev_password_id); 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_M2D, &data); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = RECEIVED_M2D; 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m4(struct wps_data *wps, 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M4"); 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M4) { 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M4", wps->state); 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg) || 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash1(wps, attr->r_hash1) || 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_hash2(wps, attr->r_hash2)) { 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10871f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m4_encr(decrypted, attr->version2 != NULL) < 0) { 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce1(wps, eattr.r_snonce1)) { 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M5; 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m6(struct wps_data *wps, 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M6"); 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M6) { 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M6", wps->state); 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11401f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m6_encr(decrypted, attr->version2 != NULL) < 0) { 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_r_snonce2(wps, eattr.r_snonce2)) { 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1157c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt if (wps->wps->ap) 1158c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_AP_PIN_SUCCESS, 1159c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt NULL); 1160c5ec7f57ead87efa365800228aa0b09a12d9e6c4Dmitry Shmidt 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_M7; 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_m8(struct wps_data *wps, 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg, 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr *attr) 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *decrypted; 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr eattr; 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received M8"); 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state != RECV_M8) { 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for " 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving M8", wps->state); 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) || 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_authenticator(wps, attr->authenticator, msg)) { 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->wps->ap && wps->wps->ap_setup_locked) { 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Stop here if special ap_setup_locked == 2 mode allowed the 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * protocol to continue beyond M2. This allows ER to learn the 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * current AP settings without changing them. 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse " 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "registration of a new Registrar"); 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->config_error = WPS_CFG_SETUP_LOCKED; 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings, 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->encr_settings_len); 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (decrypted == NULL) { 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted " 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Settings attribute"); 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12101f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt if (wps_validate_m8_encr(decrypted, wps->wps->ap, 12111f69aa52ea2e0a73ac502565df8c666ee49cab6aDmitry Shmidt attr->version2 != NULL) < 0) { 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings " 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "attribute"); 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(decrypted, &eattr) < 0 || 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) || 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_creds(wps, eattr.cred, eattr.cred_len, 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eattr.num_cred, attr->version2 != NULL) || 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_process_ap_settings_e(wps, &eattr, decrypted, 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr->version2 != NULL)) { 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(decrypted); 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_MSG_DONE; 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_msg(struct wps_data *wps, 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wps_process_res ret = WPS_CONTINUE; 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG"); 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 124861d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) { 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_CONTINUE; 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (*attr.msg_type) { 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2: 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2(msg) < 0) 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2(wps, msg, &attr); 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M2D: 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m2d(msg) < 0) 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m2d(wps, &attr); 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M4: 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m4(msg) < 0) 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m4(wps, msg, &attr); 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M4, wps->config_error, 1276b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, 1277b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->peer_dev.mac_addr); 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M6: 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m6(msg) < 0) 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m6(wps, msg, &attr); 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M6, wps->config_error, 1285b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, 1286b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->peer_dev.mac_addr); 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WPS_M8: 12898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_m8(msg) < 0) 12908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 12918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = wps_process_m8(wps, msg, &attr); 12928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK) 12938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M8, wps->config_error, 1294b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, 1295b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->peer_dev.mac_addr); 12968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 12978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 12988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d", 12998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 13008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 13048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Save a copy of the last message for Authenticator derivation if we 13058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * are continuing. However, skip M2D since it is not authenticated and 13068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * neither is the ACK/NACK response frame. This allows the possibly 13078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * following M2 to be processed correctly by using the previously sent 13088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * M1 in Authenticator derivation. 13098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 13108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret == WPS_CONTINUE && *attr.msg_type != WPS_M2D) { 13118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Save a copy of the last message for Authenticator derivation 13128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 13138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(wps->last_msg); 13148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->last_msg = wpabuf_dup(msg); 13158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 13188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_ack(struct wps_data *wps, 13228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 13238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 13258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK"); 13278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 13298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 13328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 13338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_ACK) { 13378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 13388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 13398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 134361d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0) 13448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 13458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 13468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 135061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) { 13518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 13528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps->state == RECV_ACK && wps->wps->ap) { 13568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: External Registrar registration " 13578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "completed successfully"); 1358b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps_success_event(wps->wps, wps->peer_dev.mac_addr); 13598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = WPS_FINISHED; 13608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_DONE; 13618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 13658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic enum wps_process_res wps_process_wsc_nack(struct wps_data *wps, 13688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 13698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 13708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 13718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 config_error; 13728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK"); 13748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) < 0) 13768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.msg_type == NULL) { 13798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute"); 13808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type != WPS_WSC_NACK) { 13848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d", 13858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *attr.msg_type); 13868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 13898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.registrar_nonce == NULL || 139061d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0) 13918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt { 13928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce"); 13938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Registrar Nonce", 13948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.registrar_nonce, WPS_NONCE_LEN); 13958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Registrar Nonce", 13968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_r, WPS_NONCE_LEN); 13978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 13988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 13998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.enrollee_nonce == NULL || 140161d9df3e62aaa0e87ad05452fcb95142159a17b6Dmitry Shmidt os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) { 14028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce"); 14038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Received Enrollee Nonce", 14048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt attr.enrollee_nonce, WPS_NONCE_LEN); 14058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "WPS: Expected Enrollee Nonce", 14068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->nonce_e, WPS_NONCE_LEN); 14078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (attr.config_error == NULL) { 14118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute " 14128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "in WSC_NACK"); 14138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config_error = WPA_GET_BE16(attr.config_error); 14178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Registrar terminated negotiation with " 14188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Configuration Error %d", config_error); 14198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (wps->state) { 14218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M4: 14228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M3, config_error, 1423b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, wps->peer_dev.mac_addr); 14248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M6: 14268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M5, config_error, 1427b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, wps->peer_dev.mac_addr); 14288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case RECV_M8: 14308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps_fail_event(wps->wps, WPS_M7, config_error, 1431b7b4d0ec07161a6d76c40ba7ef1306e82fbb7e15Dmitry Shmidt wps->error_indication, wps->peer_dev.mac_addr); 14328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 14348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 14358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Followed by NACK if Enrollee is Supplicant or EAP-Failure if 14388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Enrollee is Authenticator */ 14398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wps->state = SEND_WSC_NACK; 14408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 14438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtenum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 14468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum wsc_op_code op_code, 14478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *msg) 14488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 14498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu " 14518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "op_code=%d)", 14528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(msg), op_code); 14538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (op_code == WSC_UPnP) { 14558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Determine the OpCode based on message type attribute */ 14568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wps_parse_attr attr; 14578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) { 14588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*attr.msg_type == WPS_WSC_ACK) 14598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_ACK; 14608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else if (*attr.msg_type == WPS_WSC_NACK) 14618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt op_code = WSC_NACK; 14628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 14658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (op_code) { 14668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_MSG: 14678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_UPnP: 14688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_msg(wps, msg); 14698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_ACK: 14708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_ack(msg) < 0) 14718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_ack(wps, msg); 14738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case WSC_NACK: 14748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wps_validate_wsc_nack(msg) < 0) 14758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return wps_process_wsc_nack(wps, msg); 14778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 14788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code); 14798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return WPS_FAILURE; 14808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 14818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1482