wpa_supplicant: eap_tls_common.h Source File

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00001 /*
00002  * EAP-TLS/PEAP/TTLS/FAST server common functions
00003  * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #ifndef EAP_TLS_COMMON_H
00016 #define EAP_TLS_COMMON_H
00017 
00021 struct eap_ssl_data {
00025         struct tls_connection *conn;
00026 
00030         struct wpabuf *tls_out;
00031 
00035         size_t tls_out_pos;
00036 
00040         size_t tls_out_limit;
00041 
00045         struct wpabuf *tls_in;
00046 
00050         int phase2;
00051 
00055         struct eap_sm *eap;
00056 
00057         enum { MSG, FRAG_ACK, WAIT_FRAG_ACK } state;
00058         struct wpabuf tmpbuf;
00059 };
00060 
00061 
00062 /* EAP TLS Flags */
00063 #define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80
00064 #define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
00065 #define EAP_TLS_FLAGS_START 0x20
00066 #define EAP_TLS_VERSION_MASK 0x07
00067 
00068  /* could be up to 128 bytes, but only the first 64 bytes are used */
00069 #define EAP_TLS_KEY_LEN 64
00070 
00071 
00072 int eap_server_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
00073                             int verify_peer);
00074 void eap_server_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
00075 u8 * eap_server_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
00076                                char *label, size_t len);
00077 struct wpabuf * eap_server_tls_build_msg(struct eap_ssl_data *data,
00078                                          int eap_type, int version, u8 id);
00079 struct wpabuf * eap_server_tls_build_ack(u8 id, int eap_type, int version);
00080 int eap_server_tls_phase1(struct eap_sm *sm, struct eap_ssl_data *data);
00081 struct wpabuf * eap_server_tls_encrypt(struct eap_sm *sm,
00082                                        struct eap_ssl_data *data,
00083                                        const struct wpabuf *plain);
00084 int eap_server_tls_process(struct eap_sm *sm, struct eap_ssl_data *data,
00085                            struct wpabuf *respData, void *priv, int eap_type,
00086                            int (*proc_version)(struct eap_sm *sm, void *priv,
00087                                                int peer_version),
00088                            void (*proc_msg)(struct eap_sm *sm, void *priv,
00089                                             const struct wpabuf *respData));
00090 
00091 #endif /* EAP_TLS_COMMON_H */