contrib/hostapd/src/eap_server/eap_tls_common.h

   1 /*
   2  * hostapd / EAP-TLS/PEAP/TTLS/FAST common functions
   3  * Copyright (c) 2004-2008, Jouni Malinen <j@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 struct eap_ssl_data {
  19         struct tls_connection *conn;
  20
  21         size_t tls_out_limit;
  22
  23         int phase2;
  24
  25         struct eap_sm *eap;
  26
  27         enum { MSG, FRAG_ACK, WAIT_FRAG_ACK } state;
  28         struct wpabuf *in_buf;
  29         struct wpabuf *out_buf;
  30         size_t out_used;
  31         struct wpabuf tmpbuf;
  32 };
  33
  34
  35 /* EAP TLS Flags */
  36 #define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80
  37 #define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
  38 #define EAP_TLS_FLAGS_START 0x20
  39 #define EAP_TLS_VERSION_MASK 0x07
  40
  41  /* could be up to 128 bytes, but only the first 64 bytes are used */
  42 #define EAP_TLS_KEY_LEN 64
  43
  44
  45 int eap_server_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
  46                             int verify_peer);
  47 void eap_server_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
  48 u8 * eap_server_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
  49                                char *label, size_t len);
  50 struct wpabuf * eap_server_tls_build_msg(struct eap_ssl_data *data,
  51                                          int eap_type, int version, u8 id);
  52 struct wpabuf * eap_server_tls_build_ack(u8 id, int eap_type, int version);
  53 int eap_server_tls_phase1(struct eap_sm *sm, struct eap_ssl_data *data);
  54 struct wpabuf * eap_server_tls_encrypt(struct eap_sm *sm,
  55                                        struct eap_ssl_data *data,
  56                                        const u8 *plain, size_t plain_len);
  57 int eap_server_tls_process(struct eap_sm *sm, struct eap_ssl_data *data,
  58                            struct wpabuf *respData, void *priv, int eap_type,
  59                            int (*proc_version)(struct eap_sm *sm, void *priv,
  60                                                int peer_version),
  61                            void (*proc_msg)(struct eap_sm *sm, void *priv,
  62                                             const struct wpabuf *respData));
  63
  64 #endif /* EAP_TLS_COMMON_H */