2 * EAP peer: EAP-TLS/PEAP/TTLS/FAST common functions
3 * Copyright (c) 2004-2009, 2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #ifndef EAP_TLS_COMMON_H
10 #define EAP_TLS_COMMON_H
17 * struct eap_ssl_data - TLS data for EAP methods
21 * conn - TLS connection context data from tls_connection_init()
23 struct tls_connection *conn;
26 * tls_out - TLS message to be sent out in fragments
28 struct wpabuf *tls_out;
31 * tls_out_pos - The current position in the outgoing TLS message
36 * tls_out_limit - Maximum fragment size for outgoing TLS messages
41 * tls_in - Received TLS message buffer for re-assembly
43 struct wpabuf *tls_in;
46 * tls_in_left - Number of remaining bytes in the incoming TLS message
51 * tls_in_total - Total number of bytes in the incoming TLS message
56 * phase2 - Whether this TLS connection is used in EAP phase 2 (tunnel)
61 * include_tls_length - Whether the TLS length field is included even
62 * if the TLS data is not fragmented
64 int include_tls_length;
67 * eap - EAP state machine allocated with eap_peer_sm_init()
72 * ssl_ctx - TLS library context to use for the connection
77 * eap_type - EAP method used in Phase 1 (EAP_TYPE_TLS/PEAP/TTLS/FAST)
84 #define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80
85 #define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
86 #define EAP_TLS_FLAGS_START 0x20
87 #define EAP_TLS_VERSION_MASK 0x07
89 /* could be up to 128 bytes, but only the first 64 bytes are used */
90 #define EAP_TLS_KEY_LEN 64
92 /* dummy type used as a flag for UNAUTH-TLS */
93 #define EAP_UNAUTH_TLS_TYPE 255
94 #define EAP_WFA_UNAUTH_TLS_TYPE 254
97 int eap_peer_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
98 struct eap_peer_config *config, u8 eap_type);
99 void eap_peer_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
100 u8 * eap_peer_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
101 const char *label, size_t len);
102 u8 * eap_peer_tls_derive_session_id(struct eap_sm *sm,
103 struct eap_ssl_data *data, u8 eap_type,
105 int eap_peer_tls_process_helper(struct eap_sm *sm, struct eap_ssl_data *data,
106 EapType eap_type, int peap_version,
107 u8 id, const struct wpabuf *in_data,
108 struct wpabuf **out_data);
109 struct wpabuf * eap_peer_tls_build_ack(u8 id, EapType eap_type,
111 int eap_peer_tls_reauth_init(struct eap_sm *sm, struct eap_ssl_data *data);
112 int eap_peer_tls_status(struct eap_sm *sm, struct eap_ssl_data *data,
113 char *buf, size_t buflen, int verbose);
114 const u8 * eap_peer_tls_process_init(struct eap_sm *sm,
115 struct eap_ssl_data *data,
117 struct eap_method_ret *ret,
118 const struct wpabuf *reqData,
119 size_t *len, u8 *flags);
120 void eap_peer_tls_reset_input(struct eap_ssl_data *data);
121 void eap_peer_tls_reset_output(struct eap_ssl_data *data);
122 int eap_peer_tls_decrypt(struct eap_sm *sm, struct eap_ssl_data *data,
123 const struct wpabuf *in_data,
124 struct wpabuf **in_decrypted);
125 int eap_peer_tls_encrypt(struct eap_sm *sm, struct eap_ssl_data *data,
126 EapType eap_type, int peap_version, u8 id,
127 const struct wpabuf *in_data,
128 struct wpabuf **out_data);
129 int eap_peer_select_phase2_methods(struct eap_peer_config *config,
131 struct eap_method_type **types,
133 int eap_peer_tls_phase2_nak(struct eap_method_type *types, size_t num_types,
134 struct eap_hdr *hdr, struct wpabuf **resp);
140 #endif /* EAP_TLS_COMMON_H */