eap_peap.c revision 8d520ff1dc2da35cdca849e982051b86468016d8
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP peer method: EAP-PEAP (draft-josefsson-pppext-eap-tls-eap-10.txt) 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi> 48d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 58d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This program is free software; you can redistribute it and/or modify 68d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * it under the terms of the GNU General Public License version 2 as 78d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * published by the Free Software Foundation. 88d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 98d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Alternatively, this software may be distributed under the terms of BSD 108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * license. 118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * See README and COPYING for more details. 138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "includes.h" 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "common.h" 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/sha1.h" 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "crypto/tls.h" 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_common/eap_tlv_common.h" 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_common/eap_peap_common.h" 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_i.h" 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_tls_common.h" 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "eap_config.h" 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#include "tncc.h" 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* Maximum supported PEAP version 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 0 = Microsoft's PEAP version 0; draft-kamath-pppext-peapv0-00.txt 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 1 = draft-josefsson-ppext-eap-tls-eap-05.txt 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 2 = draft-josefsson-ppext-eap-tls-eap-10.txt 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_PEAP_VERSION 1 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_peap_deinit(struct eap_sm *sm, void *priv); 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct eap_peap_data { 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_ssl_data ssl; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int peap_version, force_peap_version, force_new_label; 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct eap_method *phase2_method; 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void *phase2_priv; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int phase2_success; 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int phase2_eap_success; 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int phase2_eap_started; 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_type phase2_type; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_type *phase2_types; 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t num_phase2_types; 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int peap_outer_success; /* 0 = PEAP terminated on Phase 2 inner 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP-Success 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 1 = reply with tunneled EAP-Success to inner 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP-Success and expect AS to send outer 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * (unencrypted) EAP-Success after this 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 2 = reply with PEAP/TLS ACK to inner 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP-Success and expect AS to send outer 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * (unencrypted) EAP-Success after this */ 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int resuming; /* starting a resumed session */ 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int reauth; /* reauthentication */ 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key_data; 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *pending_phase2_req; 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum { NO_BINDING, OPTIONAL_BINDING, REQUIRE_BINDING } crypto_binding; 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int crypto_binding_used; 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 binding_nonce[32]; 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 ipmk[40]; 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 cmk[20]; 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int soh; /* Whether IF-TNCCS-SOH (Statement of Health; Microsoft NAP) 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * is enabled. */ 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_peap_parse_phase1(struct eap_peap_data *data, 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *phase1) 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const char *pos; 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = os_strstr(phase1, "peapver="); 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos) { 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->force_peap_version = atoi(pos + 8); 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version = data->force_peap_version; 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Forced PEAP version %d", 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->force_peap_version); 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_strstr(phase1, "peaplabel=1")) { 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->force_new_label = 1; 928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Force new label for key " 938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derivation"); 948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_strstr(phase1, "peap_outer_success=0")) { 978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_outer_success = 0; 988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: terminate authentication on " 998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "tunneled EAP-Success"); 1008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (os_strstr(phase1, "peap_outer_success=1")) { 1018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_outer_success = 1; 1028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: send tunneled EAP-Success " 1038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "after receiving tunneled EAP-Success"); 1048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (os_strstr(phase1, "peap_outer_success=2")) { 1058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_outer_success = 2; 1068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: send PEAP/TLS ACK after " 1078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "receiving tunneled EAP-Success"); 1088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_strstr(phase1, "crypto_binding=0")) { 1118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->crypto_binding = NO_BINDING; 1128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Do not use cryptobinding"); 1138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (os_strstr(phase1, "crypto_binding=1")) { 1148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->crypto_binding = OPTIONAL_BINDING; 1158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Optional cryptobinding"); 1168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (os_strstr(phase1, "crypto_binding=2")) { 1178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->crypto_binding = REQUIRE_BINDING; 1188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Require cryptobinding"); 1198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_TNC 1228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_strstr(phase1, "tnc=soh2")) { 1238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->soh = 2; 1248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: SoH version 2 enabled"); 1258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (os_strstr(phase1, "tnc=soh1")) { 1268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->soh = 1; 1278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: SoH version 1 enabled"); 1288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (os_strstr(phase1, "tnc=soh")) { 1298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->soh = 2; 1308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: SoH version 2 enabled"); 1318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_TNC */ 1338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 1358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_peap_init(struct eap_sm *sm) 1398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data; 1418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peer_config *config = eap_get_config(sm); 1428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data = os_zalloc(sizeof(*data)); 1448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 1458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->peap_done = FALSE; 1478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version = EAP_PEAP_VERSION; 1488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->force_peap_version = -1; 1498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_outer_success = 2; 1508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->crypto_binding = OPTIONAL_BINDING; 1518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (config && config->phase1 && 1538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peap_parse_phase1(data, config->phase1) < 0) { 1548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peap_deinit(sm, data); 1558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peer_select_phase2_methods(config, "auth=", 1598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &data->phase2_types, 1608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &data->num_phase2_types) < 0) { 1618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peap_deinit(sm, data); 1628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.vendor = EAP_VENDOR_IETF; 1668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.method = EAP_TYPE_NONE; 1678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peer_tls_ssl_init(sm, &data->ssl, config)) { 1698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Failed to initialize SSL."); 1708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peap_deinit(sm, data); 1718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 1728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 1738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data; 1758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_peap_deinit(struct eap_sm *sm, void *priv) 1798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 1808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 1818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data == NULL) 1828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return; 1838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_priv && data->phase2_method) 1848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->deinit(sm, data->phase2_priv); 1858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->phase2_types); 1868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_tls_ssl_deinit(sm, &data->ssl); 1878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->key_data); 1888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->pending_phase2_req); 1898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 1908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 1938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 1948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * eap_tlv_build_nak - Build EAP-TLV NAK message 1958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @id: EAP identifier for the header 1968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @nak_type: TLV type (EAP_TLV_*) 1978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: Buffer to the allocated EAP-TLV NAK message or %NULL on failure 1988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 1998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This funtion builds an EAP-TLV NAK message. The caller is responsible for 2008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * freeing the returned buffer. 2018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 2028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_tlv_build_nak(int id, u16 nak_type) 2038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 2058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_TLV, 10, 2078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_CODE_RESPONSE, id); 2088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 2098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 2108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, 0x80); /* Mandatory */ 2128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, EAP_TLV_NAK_TLV); 2138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 6); /* Length */ 2148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be32(msg, 0); /* Vendor-Id */ 2158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, nak_type); /* NAK-Type */ 2168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 2188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_peap_get_isk(struct eap_sm *sm, struct eap_peap_data *data, 2228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *isk, size_t isk_len) 2238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 2258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t key_len; 2268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(isk, 0, isk_len); 2288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_method == NULL || data->phase2_priv == NULL || 2298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->isKeyAvailable == NULL || 2308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->getKey == NULL) 2318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (!data->phase2_method->isKeyAvailable(sm, data->phase2_priv) || 2348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (key = data->phase2_method->getKey(sm, data->phase2_priv, 2358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &key_len)) == NULL) { 2368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Could not get key material " 2378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "from Phase 2"); 2388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key_len > isk_len) 2428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key_len = isk_len; 2438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(isk, key, key_len); 2448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(key); 2458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 2488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_peap_derive_cmk(struct eap_sm *sm, struct eap_peap_data *data) 2518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 2528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *tk; 2538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 isk[32], imck[60]; 2548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 2568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Tunnel key (TK) is the first 60 octets of the key generated by 2578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * phase 1 of PEAP (based on TLS). 2588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 2598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tk = data->key_data; 2608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tk == NULL) 2618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: TK", tk, 60); 2638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->reauth && 2658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tls_connection_resumed(sm->ssl_ctx, data->ssl.conn)) { 2668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Fast-connect: IPMK|CMK = TK */ 2678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->ipmk, tk, 40); 2688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IPMK from TK", 2698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->ipmk, 40); 2708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->cmk, tk + 40, 20); 2718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CMK from TK", 2728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->cmk, 20); 2738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 2758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peap_get_isk(sm, data, isk, sizeof(isk)) < 0) 2778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 2788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: ISK", isk, sizeof(isk)); 2798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 2818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * IPMK Seed = "Inner Methods Compound Keys" | ISK 2828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * TempKey = First 40 octets of TK 2838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * IPMK|CMK = PRF+(TempKey, IPMK Seed, 60) 2848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * (note: draft-josefsson-pppext-eap-tls-eap-10.txt includes a space 2858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * in the end of the label just before ISK; is that just a typo?) 2868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 2878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: TempKey", tk, 40); 2888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peap_prfplus(data->peap_version, tk, 40, "Inner Methods Compound Keys", 2898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt isk, sizeof(isk), imck, sizeof(imck)); 2908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IMCK (IPMKj)", 2918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt imck, sizeof(imck)); 2928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->ipmk, imck, 40); 2948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IPMK (S-IPMKj)", data->ipmk, 40); 2958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->cmk, imck + 40, 20); 2968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CMK (CMKj)", data->cmk, 20); 2978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 2988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 2998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_tlv_add_cryptobinding(struct eap_sm *sm, 3038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data, 3048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf) 3058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *mac; 3078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 eap_type = EAP_TYPE_PEAP; 3088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *addr[2]; 3098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len[2]; 3108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u16 tlv_type; 3118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Compound_MAC: HMAC-SHA1-160(cryptobinding TLV | EAP type) */ 3138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0] = wpabuf_put(buf, 0); 3148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[0] = 60; 3158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1] = &eap_type; 3168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len[1] = 1; 3178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv_type = EAP_TLV_CRYPTO_BINDING_TLV; 3198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version >= 2) 3208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv_type |= EAP_TLV_TYPE_MANDATORY; 3218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(buf, tlv_type); 3228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(buf, 56); 3238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(buf, 0); /* Reserved */ 3258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(buf, data->peap_version); /* Version */ 3268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(buf, data->peap_version); /* RecvVersion */ 3278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(buf, 1); /* SubType: 0 = Request, 1 = Response */ 3288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(buf, data->binding_nonce, 32); /* Nonce */ 3298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mac = wpabuf_put(buf, 20); /* Compound_MAC */ 3308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC CMK", data->cmk, 20); 3318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC data 1", 3328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[0], len[0]); 3338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC data 2", 3348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt addr[1], len[1]); 3358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha1_vector(data->cmk, 20, 2, addr, len, mac); 3368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC", mac, SHA1_MAC_LEN); 3378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->crypto_binding_used = 1; 3388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 3408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 3448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * eap_tlv_build_result - Build EAP-TLV Result message 3458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @id: EAP identifier for the header 3468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @status: Status (EAP_TLV_RESULT_SUCCESS or EAP_TLV_RESULT_FAILURE) 3478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: Buffer to the allocated EAP-TLV Result message or %NULL on failure 3488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * 3498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * This funtion builds an EAP-TLV Result message. The caller is responsible for 3508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * freeing the returned buffer. 3518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 3528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_tlv_build_result(struct eap_sm *sm, 3538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data, 3548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int crypto_tlv_used, 3558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int id, u16 status) 3568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *msg; 3588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 3598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->crypto_binding == NO_BINDING) 3618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt crypto_tlv_used = 0; 3628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = 6; 3648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (crypto_tlv_used) 3658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len += 60; /* Cryptobinding TLV */ 3668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt msg = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_TLV, len, 3678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_CODE_RESPONSE, id); 3688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (msg == NULL) 3698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, 0x80); /* Mandatory */ 3728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_u8(msg, EAP_TLV_RESULT_TLV); 3738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, 2); /* Length */ 3748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_be16(msg, status); /* Status */ 3758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (crypto_tlv_used && eap_tlv_add_cryptobinding(sm, data, msg)) { 3778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(msg); 3788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 3798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return msg; 3828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 3838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_tlv_validate_cryptobinding(struct eap_sm *sm, 3868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data, 3878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *crypto_tlv, 3888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t crypto_tlv_len) 3898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 3908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 buf[61], mac[SHA1_MAC_LEN]; 3918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 3928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peap_derive_cmk(sm, data) < 0) { 3948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Could not derive CMK"); 3958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 3968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 3978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 3988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (crypto_tlv_len != 4 + 56) { 3998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Invalid cryptobinding TLV " 4008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "length %d", (int) crypto_tlv_len); 4018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = crypto_tlv; 4058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 4; /* TLV header */ 4068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[1] != data->peap_version) { 4078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Cryptobinding TLV Version " 4088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "mismatch (was %d; expected %d)", 4098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos[1], data->peap_version); 4108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos[3] != 0) { 4148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Unexpected Cryptobinding TLV " 4158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "SubType %d", pos[3]); 4168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 4; 4198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(data->binding_nonce, pos, 32); 4208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 32; /* Nonce */ 4218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Compound_MAC: HMAC-SHA1-160(cryptobinding TLV | EAP type) */ 4238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(buf, crypto_tlv, 60); 4248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(buf + 4 + 4 + 32, 0, 20); /* Compound_MAC */ 4258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf[60] = EAP_TYPE_PEAP; 4268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Compound_MAC data", 4278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf, sizeof(buf)); 4288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hmac_sha1(data->cmk, 20, buf, sizeof(buf), mac); 4298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (os_memcmp(mac, pos, SHA1_MAC_LEN) != 0) { 4318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Invalid Compound_MAC in " 4328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "cryptobinding TLV"); 4338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Received MAC", 4348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos, SHA1_MAC_LEN); 4358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Expected MAC", 4368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mac, SHA1_MAC_LEN); 4378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Valid cryptobinding TLV received"); 4418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 4438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 4448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 4478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * eap_tlv_process - Process a received EAP-TLV message and generate a response 4488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init() 4498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @ret: Return values from EAP request validation and processing 4508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @req: EAP-TLV request to be processed. The caller must have validated that 4518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * the buffer is large enough to contain full request (hdr->length bytes) and 4528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * that the EAP type is EAP_TYPE_TLV. 4538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @resp: Buffer to return a pointer to the allocated response message. This 4548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * field should be initialized to %NULL before the call. The value will be 4558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * updated if a response message is generated. The caller is responsible for 4568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * freeing the allocated message. 4578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * @force_failure: Force negotiation to fail 4588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Returns: 0 on success, -1 on failure 4598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 4608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_tlv_process(struct eap_sm *sm, struct eap_peap_data *data, 4618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 4628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *req, struct wpabuf **resp, 4638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int force_failure) 4648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 4658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t left, tlv_len; 4668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 4678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *result_tlv = NULL, *crypto_tlv = NULL; 4688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t result_tlv_len = 0, crypto_tlv_len = 0; 4698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int tlv_type, mandatory; 4708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 4718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Parse TLVs */ 4728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_TLV, req, &left); 4738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos == NULL) 4748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-TLV: Received TLVs", pos, left); 4768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt while (left >= 4) { 4778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mandatory = !!(pos[0] & 0x80); 4788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv_type = WPA_GET_BE16(pos) & 0x3fff; 4798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 4808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv_len = WPA_GET_BE16(pos); 4818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += 2; 4828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt left -= 4; 4838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tlv_len > left) { 4848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-TLV: TLV underrun " 4858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(tlv_len=%lu left=%lu)", 4868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) tlv_len, 4878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) left); 4888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 4898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 4908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (tlv_type) { 4918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_TLV_RESULT_TLV: 4928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt result_tlv = pos; 4938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt result_tlv_len = tlv_len; 4948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_TLV_CRYPTO_BINDING_TLV: 4968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt crypto_tlv = pos; 4978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt crypto_tlv_len = tlv_len; 4988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 4998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 5008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-TLV: Unsupported TLV Type " 5018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "%d%s", tlv_type, 5028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt mandatory ? " (mandatory)" : ""); 5038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (mandatory) { 5048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* NAK TLV and ignore all TLVs in this packet. 5058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 5068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp = eap_tlv_build_nak(eap_get_id(req), 5078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv_type); 5088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return *resp == NULL ? -1 : 0; 5098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Ignore this TLV, but process other TLVs */ 5118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 5128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos += tlv_len; 5158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt left -= tlv_len; 5168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (left) { 5188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-TLV: Last TLV too short in " 5198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Request (left=%lu)", (unsigned long) left); 5208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Process supported TLVs */ 5248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (crypto_tlv && data->crypto_binding != NO_BINDING) { 5258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Cryptobinding TLV", 5268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt crypto_tlv, crypto_tlv_len); 5278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_tlv_validate_cryptobinding(sm, data, crypto_tlv - 4, 5288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt crypto_tlv_len + 4) < 0) { 5298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (result_tlv == NULL) 5308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt force_failure = 1; 5328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt crypto_tlv = NULL; /* do not include Cryptobinding TLV 5338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * in response, if the received 5348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * cryptobinding was invalid. */ 5358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (!crypto_tlv && data->crypto_binding == REQUIRE_BINDING) { 5378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: No cryptobinding TLV"); 5388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (result_tlv) { 5428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int status, resp_status; 5438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-TLV: Result TLV", 5448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt result_tlv, result_tlv_len); 5458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (result_tlv_len < 2) { 5468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-TLV: Too short Result TLV " 5478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(len=%lu)", 5488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) result_tlv_len); 5498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 5508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt status = WPA_GET_BE16(result_tlv); 5528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (status == EAP_TLV_RESULT_SUCCESS) { 5538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-TLV: TLV Result - Success " 5548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "- EAP-TLV/Phase2 Completed"); 5558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (force_failure) { 5568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-TLV: Earlier failure" 5578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " - force failed Phase 2"); 5588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_status = EAP_TLV_RESULT_FAILURE; 5598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 5608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_status = EAP_TLV_RESULT_SUCCESS; 5628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_UNCOND_SUCC; 5638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (status == EAP_TLV_RESULT_FAILURE) { 5658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-TLV: TLV Result - Failure"); 5668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_status = EAP_TLV_RESULT_FAILURE; 5678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 5688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 5698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-TLV: Unknown TLV Result " 5708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Status %d", status); 5718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp_status = EAP_TLV_RESULT_FAILURE; 5728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 5738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 5758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp = eap_tlv_build_result(sm, data, crypto_tlv != NULL, 5778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_get_id(req), resp_status); 5788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 5798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 5818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 5828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_peapv2_tlv_eap_payload(struct wpabuf *buf) 5858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 5868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *e; 5878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_tlv_hdr *tlv; 5888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf == NULL) 5908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 5918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 5928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Encapsulate EAP packet in EAP-Payload TLV */ 5938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAPv2: Add EAP-Payload TLV"); 5948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt e = wpabuf_alloc(sizeof(*tlv) + wpabuf_len(buf)); 5958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (e == NULL) { 5968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAPv2: Failed to allocate memory " 5978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "for TLV encapsulation"); 5988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(buf); 5998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 6008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv = wpabuf_put(e, sizeof(*tlv)); 6028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv->tlv_type = host_to_be16(EAP_TLV_TYPE_MANDATORY | 6038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TLV_EAP_PAYLOAD_TLV); 6048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv->length = host_to_be16(wpabuf_len(buf)); 6058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_buf(e, buf); 6068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(buf); 6078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return e; 6088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 6098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_peap_phase2_request(struct eap_sm *sm, 6128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data, 6138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 6148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *req, 6158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf **resp) 6168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 6178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_hdr *hdr = wpabuf_mhead(req); 6188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len = be_to_host16(hdr->length); 6198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *pos; 6208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret iret; 6218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peer_config *config = eap_get_config(sm); 6228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len <= sizeof(struct eap_hdr)) { 6248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: too short " 6258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Phase 2 request (len=%lu)", (unsigned long) len); 6268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = (u8 *) (hdr + 1); 6298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 Request: type=%d", *pos); 6308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (*pos) { 6318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_TYPE_IDENTITY: 6328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp = eap_sm_buildIdentity(sm, hdr->identifier, 1); 6338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_TYPE_TLV: 6358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&iret, 0, sizeof(iret)); 6368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_tlv_process(sm, data, &iret, req, resp, 6378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_eap_started && 6388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !data->phase2_eap_success)) { 6398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 6408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 6418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (iret.methodState == METHOD_DONE || 6448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt iret.methodState == METHOD_MAY_CONT) { 6458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = iret.methodState; 6468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = iret.decision; 6478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success = 1; 6488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_TYPE_EXPANDED: 6518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#ifdef EAP_TNC 6528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->soh) { 6538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *epos; 6548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t eleft; 6558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt epos = eap_hdr_validate(EAP_VENDOR_MICROSOFT, 0x21, 6578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req, &eleft); 6588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (epos) { 6598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *buf; 6608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, 6618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-PEAP: SoH EAP Extensions"); 6628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt buf = tncc_process_soh_request(data->soh, 6638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt epos, eleft); 6648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (buf) { 6658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp = eap_msg_alloc( 6668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_MICROSOFT, 0x21, 6678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_len(buf), 6688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_CODE_RESPONSE, 6698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr->identifier); 6708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*resp == NULL) { 6718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 6728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 6738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 6748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_buf(*resp, buf); 6768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(buf); 6778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 6788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 6818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_TNC */ 6828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* fall through */ 6838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 6848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_type.vendor == EAP_VENDOR_IETF && 6858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.method == EAP_TYPE_NONE) { 6868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t i; 6878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt for (i = 0; i < data->num_phase2_types; i++) { 6888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_types[i].vendor != 6898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF || 6908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_types[i].method != *pos) 6918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt continue; 6928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 6938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.vendor = 6948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_types[i].vendor; 6958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.method = 6968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_types[i].method; 6978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Selected " 6988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Phase 2 EAP vendor %d method %d", 6998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.vendor, 7008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.method); 7018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*pos != data->phase2_type.method || 7058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *pos == EAP_TYPE_NONE) { 7068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peer_tls_phase2_nak(data->phase2_types, 7078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->num_phase2_types, 7088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr, resp)) 7098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_priv == NULL) { 7148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method = eap_peer_get_eap_method( 7158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.vendor, 7168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_type.method); 7178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_method) { 7188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->init_phase2 = 1; 7198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_priv = 7208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->init(sm); 7218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->init_phase2 = 0; 7228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_priv == NULL || data->phase2_method == NULL) { 7258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: failed to initialize " 7268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Phase 2 EAP method %d", *pos); 7278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 7288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 7298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 7308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_eap_started = 1; 7328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memset(&iret, 0, sizeof(iret)); 7338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *resp = data->phase2_method->process(sm, data->phase2_priv, 7348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &iret, req); 7358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((iret.methodState == METHOD_DONE || 7368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt iret.methodState == METHOD_MAY_CONT) && 7378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (iret.decision == DECISION_UNCOND_SUCC || 7388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt iret.decision == DECISION_COND_SUCC)) { 7398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_eap_success = 1; 7408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success = 1; 7418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 7438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (*resp == NULL && 7468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (config->pending_req_identity || config->pending_req_password || 7478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt config->pending_req_otp || config->pending_req_new_password)) { 7488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->pending_phase2_req); 7498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pending_phase2_req = wpabuf_alloc_copy(hdr, len); 7508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 7538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 7548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_peap_decrypt(struct eap_sm *sm, struct eap_peap_data *data, 7578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 7588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct eap_hdr *req, 7598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *in_data, 7608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf **out_data) 7618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 7628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *in_decrypted = NULL; 7638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res, skip_change = 0; 7648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_hdr *hdr, *rhdr; 7658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp = NULL; 7668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t len; 7678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: received %lu bytes encrypted data for" 7698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt " Phase 2", (unsigned long) wpabuf_len(in_data)); 7708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->pending_phase2_req) { 7728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Pending Phase 2 request - " 7738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "skip decryption and use old data"); 7748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Clear TLS reassembly state. */ 7758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_tls_reset_input(&data->ssl); 7768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt in_decrypted = data->pending_phase2_req; 7778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pending_phase2_req = NULL; 7788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt skip_change = 1; 7798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt goto continue_req; 7808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 7818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 7828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_len(in_data) == 0 && sm->workaround && 7838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success) { 7848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 7858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Cisco ACS seems to be using TLS ACK to terminate 7868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP-PEAPv0/GTC. Try to reply with TLS ACK. 7878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 7888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Received TLS ACK, but " 7898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "expected data - acknowledge with TLS ACK since " 7908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Phase 2 has been completed"); 7918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_COND_SUCC; 7928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 7938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 1; 7948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (wpabuf_len(in_data) == 0) { 7958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Received TLS ACK - requesting more fragments */ 7968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_peer_tls_encrypt(sm, &data->ssl, EAP_TYPE_PEAP, 7978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version, 7988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req->identifier, NULL, out_data); 7998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_peer_tls_decrypt(sm, &data->ssl, in_data, &in_decrypted); 8028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res) 8038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return res; 8048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtcontinue_req: 8068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_buf(MSG_DEBUG, "EAP-PEAP: Decrypted Phase 2 EAP", 8078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt in_decrypted); 8088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = wpabuf_mhead(in_decrypted); 8108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_len(in_decrypted) == 5 && hdr->code == EAP_CODE_REQUEST && 8118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt be_to_host16(hdr->length) == 5 && 8128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_get_type(in_decrypted) == EAP_TYPE_IDENTITY) { 8138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* At least FreeRADIUS seems to send full EAP header with 8148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP Request Identity */ 8158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt skip_change = 1; 8168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_len(in_decrypted) >= 5 && hdr->code == EAP_CODE_REQUEST && 8188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_get_type(in_decrypted) == EAP_TYPE_TLV) { 8198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt skip_change = 1; 8208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version == 0 && !skip_change) { 8238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_hdr *nhdr; 8248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *nmsg = wpabuf_alloc(sizeof(struct eap_hdr) + 8258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_len(in_decrypted)); 8268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (nmsg == NULL) { 8278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nhdr = wpabuf_put(nmsg, sizeof(*nhdr)); 8318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_buf(nmsg, in_decrypted); 8328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nhdr->code = req->code; 8338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nhdr->identifier = req->identifier; 8348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nhdr->length = host_to_be16(sizeof(struct eap_hdr) + 8358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_len(in_decrypted)); 8368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt in_decrypted = nmsg; 8398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version >= 2) { 8428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_tlv_hdr *tlv; 8438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *nmsg; 8448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_len(in_decrypted) < sizeof(*tlv) + sizeof(*hdr)) { 8468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAPv2: Too short Phase 2 " 8478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP TLV"); 8488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt tlv = wpabuf_mhead(in_decrypted); 8528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((be_to_host16(tlv->tlv_type) & 0x3fff) != 8538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TLV_EAP_PAYLOAD_TLV) { 8548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAPv2: Not an EAP TLV"); 8558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sizeof(*tlv) + be_to_host16(tlv->length) > 8598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_len(in_decrypted)) { 8608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAPv2: Invalid EAP TLV " 8618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "length"); 8628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = (struct eap_hdr *) (tlv + 1); 8668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (be_to_host16(hdr->length) > be_to_host16(tlv->length)) { 8678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAPv2: No room for full " 8688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP packet in EAP TLV"); 8698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt nmsg = wpabuf_alloc(be_to_host16(hdr->length)); 8748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (nmsg == NULL) { 8758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_put_data(nmsg, hdr, be_to_host16(hdr->length)); 8808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt in_decrypted = nmsg; 8828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 8848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt hdr = wpabuf_mhead(in_decrypted); 8858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_len(in_decrypted) < sizeof(*hdr)) { 8868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Too short Phase 2 " 8878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP frame (len=%lu)", 8888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(in_decrypted)); 8898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 8918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 8928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = be_to_host16(hdr->length); 8938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len > wpabuf_len(in_decrypted)) { 8948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Length mismatch in " 8958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Phase 2 EAP frame (len=%lu hdr->length=%lu)", 8968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(in_decrypted), 8978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) len); 8988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 8998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (len < wpabuf_len(in_decrypted)) { 9028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Odd.. Phase 2 EAP header has " 9038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "shorter length than full decrypted data " 9048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "(%lu < %lu)", 9058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) len, 9068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) wpabuf_len(in_decrypted)); 9078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: received Phase 2: code=%d " 9098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "identifier=%d length=%lu", hdr->code, hdr->identifier, 9108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (unsigned long) len); 9118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt switch (hdr->code) { 9128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_CODE_REQUEST: 9138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peap_phase2_request(sm, data, ret, in_decrypted, 9148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &resp)) { 9158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 9168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Phase2 Request " 9178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "processing failed"); 9188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_CODE_SUCCESS: 9228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 Success"); 9238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version == 1) { 9248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* EAP-Success within TLS tunnel is used to indicate 9258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * shutdown of the TLS channel. The authentication has 9268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * been completed. */ 9278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_eap_started && 9288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !data->phase2_eap_success) { 9298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 " 9308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Success used to indicate success, " 9318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "but Phase 2 EAP was not yet " 9328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "completed successfully"); 9338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 9348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 9358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 9368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 9378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Version 1 - " 9398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-Success within TLS tunnel - " 9408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "authentication completed"); 9418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_UNCOND_SUCC; 9428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 9438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success = 1; 9448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_outer_success == 2) { 9458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 9468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Use TLS ACK " 9478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "to finish authentication"); 9488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 1; 9498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else if (data->peap_outer_success == 1) { 9508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Reply with EAP-Success within the TLS 9518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * channel to complete the authentication. */ 9528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = wpabuf_alloc(sizeof(struct eap_hdr)); 9538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp) { 9548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr = wpabuf_put(resp, sizeof(*rhdr)); 9558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr->code = EAP_CODE_SUCCESS; 9568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr->identifier = hdr->identifier; 9578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr->length = 9588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt host_to_be16(sizeof(*rhdr)); 9598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* No EAP-Success expected for Phase 1 (outer, 9628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * unencrypted auth), so force EAP state 9638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * machine to SUCCESS state. */ 9648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->peap_done = TRUE; 9658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 9678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* FIX: ? */ 9688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt case EAP_CODE_FAILURE: 9718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 Failure"); 9728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 9738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_MAY_CONT; 9748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = FALSE; 9758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* Reply with EAP-Failure within the TLS channel to complete 9768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * failure reporting. */ 9778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = wpabuf_alloc(sizeof(struct eap_hdr)); 9788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp) { 9798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr = wpabuf_put(resp, sizeof(*rhdr)); 9808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr->code = EAP_CODE_FAILURE; 9818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr->identifier = hdr->identifier; 9828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rhdr->length = host_to_be16(sizeof(*rhdr)); 9838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt default: 9868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Unexpected code=%d in " 9878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Phase 2 EAP header", hdr->code); 9888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt break; 9898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 9908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(in_decrypted); 9928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp) { 9948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int skip_change2 = 0; 9958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *rmsg, buf; 9968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 9978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_buf_key(MSG_DEBUG, 9988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-PEAP: Encrypting Phase 2 data", resp); 9998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* PEAP version changes */ 10008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version >= 2) { 10018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = eap_peapv2_tlv_eap_payload(resp); 10028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (resp == NULL) 10038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 10048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (wpabuf_len(resp) >= 5 && 10068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_head_u8(resp)[0] == EAP_CODE_RESPONSE && 10078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_get_type(resp) == EAP_TYPE_TLV) 10088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt skip_change2 = 1; 10098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rmsg = resp; 10108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version == 0 && !skip_change2) { 10118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&buf, wpabuf_head_u8(resp) + 10128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sizeof(struct eap_hdr), 10138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_len(resp) - sizeof(struct eap_hdr)); 10148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rmsg = &buf; 10158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peer_tls_encrypt(sm, &data->ssl, EAP_TYPE_PEAP, 10188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version, req->identifier, 10198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt rmsg, out_data)) { 10208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_INFO, "EAP-PEAP: Failed to encrypt " 10218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "a Phase 2 frame"); 10228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 10248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return 0; 10278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 10288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic struct wpabuf * eap_peap_process(struct eap_sm *sm, void *priv, 10318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method_ret *ret, 10328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *reqData) 10338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 10348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct eap_hdr *req; 10358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t left; 10368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int res; 10378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 flags, id; 10388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *resp; 10398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const u8 *pos; 10408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 10418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt pos = eap_peer_tls_process_init(sm, &data->ssl, EAP_TYPE_PEAP, ret, 10438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt reqData, &left, &flags); 10448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (pos == NULL) 10458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 10468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt req = wpabuf_head(reqData); 10478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt id = req->identifier; 10488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (flags & EAP_TLS_FLAGS_START) { 10508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Start (server ver=%d, own " 10518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "ver=%d)", flags & EAP_TLS_VERSION_MASK, 10528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version); 10538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if ((flags & EAP_TLS_VERSION_MASK) < data->peap_version) 10548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version = flags & EAP_TLS_VERSION_MASK; 10558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->force_peap_version >= 0 && 10568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->force_peap_version != data->peap_version) { 10578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_WARNING, "EAP-PEAP: Failed to select " 10588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "forced PEAP version %d", 10598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->force_peap_version); 10608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->methodState = METHOD_DONE; 10618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_FAIL; 10628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = FALSE; 10638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 10648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Using PEAP version %d", 10668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version); 10678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt left = 0; /* make sure that this frame is empty, even though it 10688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * should always be, anyway */ 10698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 10708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = NULL; 10728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tls_connection_established(sm->ssl_ctx, data->ssl.conn) && 10738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt !data->resuming) { 10748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf msg; 10758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&msg, pos, left); 10768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_peap_decrypt(sm, data, ret, req, &msg, &resp); 10778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 10788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_peer_tls_process_helper(sm, &data->ssl, 10798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TYPE_PEAP, 10808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version, id, pos, 10818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt left, &resp); 10828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 10838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (tls_connection_established(sm->ssl_ctx, data->ssl.conn)) { 10848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt char *label; 10858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, 10868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-PEAP: TLS done, proceed to Phase 2"); 10878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->key_data); 10888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* draft-josefsson-ppext-eap-tls-eap-05.txt 10898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * specifies that PEAPv1 would use "client PEAP 10908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * encryption" as the label. However, most existing 10918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * PEAPv1 implementations seem to be using the old 10928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * label, "client EAP encryption", instead. Use the old 10938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * label by default, but allow it to be configured with 10948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * phase1 parameter peaplabel=1. */ 10958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->peap_version > 1 || data->force_new_label) 10968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt label = "client PEAP encryption"; 10978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt else 10988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt label = "client EAP encryption"; 10998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: using label '%s' in " 11008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "key derivation", label); 11018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->key_data = 11028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_tls_derive_key(sm, &data->ssl, label, 11038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TLS_KEY_LEN); 11048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->key_data) { 11058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, 11068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-PEAP: Derived key", 11078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->key_data, 11088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_TLS_KEY_LEN); 11098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else { 11108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Failed to " 11118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "derive key"); 11128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (sm->workaround && data->resuming) { 11158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * At least few RADIUS servers (Aegis v1.1.6; 11178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * but not v1.1.4; and Cisco ACS) seem to be 11188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * terminating PEAPv1 (Aegis) or PEAPv0 (Cisco 11198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * ACS) session resumption with outer 11208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP-Success. This does not seem to follow 11218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * draft-josefsson-pppext-eap-tls-eap-05.txt 11228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * section 4.2, so only allow this if EAP 11238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * workarounds are enabled. 11248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_printf(MSG_DEBUG, "EAP-PEAP: Workaround - " 11268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "allow outer EAP-Success to " 11278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "terminate PEAP resumption"); 11288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->decision = DECISION_COND_SUCC; 11298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success = 1; 11308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->resuming = 0; 11338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == 2) { 11368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf msg; 11378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 11388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Application data included in the handshake message. 11398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 11408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->pending_phase2_req); 11418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pending_phase2_req = resp; 11428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt resp = NULL; 11438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_set(&msg, pos, left); 11448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt res = eap_peap_decrypt(sm, data, ret, req, &msg, 11458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt &resp); 11468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret->methodState == METHOD_DONE) { 11508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret->allowNotifications = FALSE; 11518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (res == 1) { 11548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(resp); 11558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return eap_peer_tls_build_ack(id, EAP_TYPE_PEAP, 11568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version); 11578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return resp; 11608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_peap_has_reauth_data(struct eap_sm *sm, void *priv) 11648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 11668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return tls_connection_established(sm->ssl_ctx, data->ssl.conn) && 11678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success; 11688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void eap_peap_deinit_for_reauth(struct eap_sm *sm, void *priv) 11728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 11748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpabuf_free(data->pending_phase2_req); 11758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->pending_phase2_req = NULL; 11768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->crypto_binding_used = 0; 11778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 11788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 11808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic void * eap_peap_init_for_reauth(struct eap_sm *sm, void *priv) 11818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 11828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 11838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data->key_data); 11848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->key_data = NULL; 11858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap_peer_tls_reauth_init(sm, &data->ssl)) { 11868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_free(data); 11878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 11888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 11898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_priv && data->phase2_method && 11908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->init_for_reauth) 11918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->init_for_reauth(sm, data->phase2_priv); 11928d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_success = 0; 11938d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_eap_success = 0; 11948d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_eap_started = 0; 11958d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->resuming = 1; 11968d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->reauth = 1; 11978d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt sm->peap_done = FALSE; 11988d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return priv; 11998d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12008d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12018d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12028d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic int eap_peap_get_status(struct eap_sm *sm, void *priv, char *buf, 12038d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t buflen, int verbose) 12048d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12058d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 12068d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int len, ret; 12078d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12088d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len = eap_peer_tls_status(sm, &data->ssl, buf, buflen, verbose); 12098d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->phase2_method) { 12108d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = os_snprintf(buf + len, buflen - len, 12118d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "EAP-PEAPv%d Phase2 method=%s\n", 12128d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->peap_version, 12138d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt data->phase2_method->name); 12148d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret < 0 || (size_t) ret >= buflen - len) 12158d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return len; 12168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt len += ret; 12178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } 12188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return len; 12198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic Boolean eap_peap_isKeyAvailable(struct eap_sm *sm, void *priv) 12238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 12258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return data->key_data != NULL && data->phase2_success; 12268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstatic u8 * eap_peap_getKey(struct eap_sm *sm, void *priv, size_t *len) 12308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_peap_data *data = priv; 12328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 *key; 12338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->key_data == NULL || !data->phase2_success) 12358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 12368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key = os_malloc(EAP_TLS_KEY_LEN); 12388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (key == NULL) 12398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return NULL; 12408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt *len = EAP_TLS_KEY_LEN; 12428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (data->crypto_binding_used) { 12448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt u8 csk[128]; 12458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* 12468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Note: It looks like Microsoft implementation requires null 12478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * termination for this label while the one used for deriving 12488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * IPMK|CMK did not use null termination. 12498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 12508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt peap_prfplus(data->peap_version, data->ipmk, 40, 12518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt "Session Key Generating Function", 12528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt (u8 *) "\00", 1, csk, sizeof(csk)); 12538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CSK", csk, sizeof(csk)); 12548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, csk, EAP_TLS_KEY_LEN); 12558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Derived key", 12568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt key, EAP_TLS_KEY_LEN); 12578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt } else 12588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt os_memcpy(key, data->key_data, EAP_TLS_KEY_LEN); 12598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return key; 12618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 12628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_peer_peap_register(void) 12658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt{ 12668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_method *eap; 12678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int ret; 12688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION, 12708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt EAP_VENDOR_IETF, EAP_TYPE_PEAP, "PEAP"); 12718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (eap == NULL) 12728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return -1; 12738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init = eap_peap_init; 12758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit = eap_peap_deinit; 12768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->process = eap_peap_process; 12778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->isKeyAvailable = eap_peap_isKeyAvailable; 12788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->getKey = eap_peap_getKey; 12798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->get_status = eap_peap_get_status; 12808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->has_reauth_data = eap_peap_has_reauth_data; 12818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->deinit_for_reauth = eap_peap_deinit_for_reauth; 12828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap->init_for_reauth = eap_peap_init_for_reauth; 12838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 12848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt ret = eap_peer_method_register(eap); 12858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt if (ret) 12868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt eap_peer_method_free(eap); 12878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt return ret; 12888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt} 1289