eap_tls_common.h revision 8d520ff1dc2da35cdca849e982051b86468016d8
18d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* 28d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * EAP-TLS/PEAP/TTLS/FAST server common functions 38d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * Copyright (c) 2004-2009, 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#ifndef EAP_TLS_COMMON_H 168d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_TLS_COMMON_H 178d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 188d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/** 198d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * struct eap_ssl_data - TLS data for EAP methods 208d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 218d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct eap_ssl_data { 228d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 238d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * conn - TLS connection context data from tls_connection_init() 248d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 258d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct tls_connection *conn; 268d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 278d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 288d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * tls_out - TLS message to be sent out in fragments 298d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 308d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *tls_out; 318d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 328d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 338d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * tls_out_pos - The current position in the outgoing TLS message 348d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 358d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t tls_out_pos; 368d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 378d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 388d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * tls_out_limit - Maximum fragment size for outgoing TLS messages 398d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 408d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt size_t tls_out_limit; 418d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 428d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 438d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * tls_in - Received TLS message buffer for re-assembly 448d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 458d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *tls_in; 468d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 478d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 488d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * phase2 - Whether this TLS connection is used in EAP phase 2 (tunnel) 498d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 508d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int phase2; 518d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 528d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /** 538d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt * eap - EAP state machine allocated with eap_server_sm_init() 548d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt */ 558d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_sm *eap; 568d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 578d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt enum { MSG, FRAG_ACK, WAIT_FRAG_ACK } state; 588d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf tmpbuf; 598d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt}; 608d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 618d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 628d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt/* EAP TLS Flags */ 638d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80 648d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40 658d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_TLS_FLAGS_START 0x20 668d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_TLS_VERSION_MASK 0x07 678d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 688d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt /* could be up to 128 bytes, but only the first 64 bytes are used */ 698d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#define EAP_TLS_KEY_LEN 64 708d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 718d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 728d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_server_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data, 738d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int verify_peer); 748d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtvoid eap_server_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data); 758d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtu8 * eap_server_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data, 768d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt char *label, size_t len); 778d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * eap_server_tls_build_msg(struct eap_ssl_data *data, 788d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int eap_type, int version, u8 id); 798d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * eap_server_tls_build_ack(u8 id, int eap_type, int version); 808d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_server_tls_phase1(struct eap_sm *sm, struct eap_ssl_data *data); 818d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtstruct wpabuf * eap_server_tls_encrypt(struct eap_sm *sm, 828d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct eap_ssl_data *data, 838d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *plain); 848d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidtint eap_server_tls_process(struct eap_sm *sm, struct eap_ssl_data *data, 858d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt struct wpabuf *respData, void *priv, int eap_type, 868d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int (*proc_version)(struct eap_sm *sm, void *priv, 878d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt int peer_version), 888d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt void (*proc_msg)(struct eap_sm *sm, void *priv, 898d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt const struct wpabuf *respData)); 908d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt 918d520ff1dc2da35cdca849e982051b86468016d8Dmitry Shmidt#endif /* EAP_TLS_COMMON_H */ 92