2 * EAP peer: EAP-TLS/PEAP/TTLS/FAST common functions
3 * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
15 #ifndef EAP_TLS_COMMON_H
16 #define EAP_TLS_COMMON_H
23 * struct eap_ssl_data - TLS data for EAP methods
27 * conn - TLS connection context data from tls_connection_init()
29 struct tls_connection *conn;
32 * tls_out - TLS message to be sent out in fragments
34 struct wpabuf *tls_out;
37 * tls_out_pos - The current position in the outgoing TLS message
42 * tls_out_limit - Maximum fragment size for outgoing TLS messages
47 * tls_in - Received TLS message buffer for re-assembly
49 struct wpabuf *tls_in;
52 * tls_in_left - Number of remaining bytes in the incoming TLS message
57 * tls_in_total - Total number of bytes in the incoming TLS message
62 * phase2 - Whether this TLS connection is used in EAP phase 2 (tunnel)
67 * include_tls_length - Whether the TLS length field is included even
68 * if the TLS data is not fragmented
70 int include_tls_length;
73 * tls_ia - Whether TLS/IA is enabled for this TLS connection
78 * eap - EAP state machine allocated with eap_peer_sm_init()
85 #define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80
86 #define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
87 #define EAP_TLS_FLAGS_START 0x20
88 #define EAP_TLS_VERSION_MASK 0x07
90 /* could be up to 128 bytes, but only the first 64 bytes are used */
91 #define EAP_TLS_KEY_LEN 64
94 int eap_peer_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
95 struct eap_peer_config *config);
96 void eap_peer_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
97 u8 * eap_peer_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
98 const char *label, size_t len);
99 int eap_peer_tls_process_helper(struct eap_sm *sm, struct eap_ssl_data *data,
100 EapType eap_type, int peap_version,
101 u8 id, const u8 *in_data, size_t in_len,
102 struct wpabuf **out_data);
103 struct wpabuf * eap_peer_tls_build_ack(u8 id, EapType eap_type,
105 int eap_peer_tls_reauth_init(struct eap_sm *sm, struct eap_ssl_data *data);
106 int eap_peer_tls_status(struct eap_sm *sm, struct eap_ssl_data *data,
107 char *buf, size_t buflen, int verbose);
108 const u8 * eap_peer_tls_process_init(struct eap_sm *sm,
109 struct eap_ssl_data *data,
111 struct eap_method_ret *ret,
112 const struct wpabuf *reqData,
113 size_t *len, u8 *flags);
114 void eap_peer_tls_reset_input(struct eap_ssl_data *data);
115 void eap_peer_tls_reset_output(struct eap_ssl_data *data);
116 int eap_peer_tls_decrypt(struct eap_sm *sm, struct eap_ssl_data *data,
117 const struct wpabuf *in_data,
118 struct wpabuf **in_decrypted);
119 int eap_peer_tls_encrypt(struct eap_sm *sm, struct eap_ssl_data *data,
120 EapType eap_type, int peap_version, u8 id,
121 const struct wpabuf *in_data,
122 struct wpabuf **out_data);
123 int eap_peer_select_phase2_methods(struct eap_peer_config *config,
125 struct eap_method_type **types,
127 int eap_peer_tls_phase2_nak(struct eap_method_type *types, size_t num_types,
128 struct eap_hdr *hdr, struct wpabuf **resp);
134 #endif /* EAP_TLS_COMMON_H */