1 /* 2 * EAP-TLS/PEAP/TTLS/FAST server common functions 3 * Copyright (c) 2004-2009, Jouni Malinen <j (at) w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #ifndef EAP_TLS_COMMON_H 16 #define EAP_TLS_COMMON_H 17 18 /** 19 * struct eap_ssl_data - TLS data for EAP methods 20 */ 21 struct eap_ssl_data { 22 /** 23 * conn - TLS connection context data from tls_connection_init() 24 */ 25 struct tls_connection *conn; 26 27 /** 28 * tls_out - TLS message to be sent out in fragments 29 */ 30 struct wpabuf *tls_out; 31 32 /** 33 * tls_out_pos - The current position in the outgoing TLS message 34 */ 35 size_t tls_out_pos; 36 37 /** 38 * tls_out_limit - Maximum fragment size for outgoing TLS messages 39 */ 40 size_t tls_out_limit; 41 42 /** 43 * tls_in - Received TLS message buffer for re-assembly 44 */ 45 struct wpabuf *tls_in; 46 47 /** 48 * phase2 - Whether this TLS connection is used in EAP phase 2 (tunnel) 49 */ 50 int phase2; 51 52 /** 53 * eap - EAP state machine allocated with eap_server_sm_init() 54 */ 55 struct eap_sm *eap; 56 57 enum { MSG, FRAG_ACK, WAIT_FRAG_ACK } state; 58 struct wpabuf tmpbuf; 59 }; 60 61 62 /* EAP TLS Flags */ 63 #define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80 64 #define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40 65 #define EAP_TLS_FLAGS_START 0x20 66 #define EAP_TLS_VERSION_MASK 0x07 67 68 /* could be up to 128 bytes, but only the first 64 bytes are used */ 69 #define EAP_TLS_KEY_LEN 64 70 71 72 int eap_server_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data, 73 int verify_peer); 74 void eap_server_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data); 75 u8 * eap_server_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data, 76 char *label, size_t len); 77 struct wpabuf * eap_server_tls_build_msg(struct eap_ssl_data *data, 78 int eap_type, int version, u8 id); 79 struct wpabuf * eap_server_tls_build_ack(u8 id, int eap_type, int version); 80 int eap_server_tls_phase1(struct eap_sm *sm, struct eap_ssl_data *data); 81 struct wpabuf * eap_server_tls_encrypt(struct eap_sm *sm, 82 struct eap_ssl_data *data, 83 const struct wpabuf *plain); 84 int eap_server_tls_process(struct eap_sm *sm, struct eap_ssl_data *data, 85 struct wpabuf *respData, void *priv, int eap_type, 86 int (*proc_version)(struct eap_sm *sm, void *priv, 87 int peer_version), 88 void (*proc_msg)(struct eap_sm *sm, void *priv, 89 const struct wpabuf *respData)); 90 91 #endif /* EAP_TLS_COMMON_H */ 92
