text: /*
   * WPA Supplicant / EAP-TLS/PEAP/TTLS/FAST common functions
   * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.fi>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * Alternatively, this software may be distributed under the terms of BSD
   * license.
   *
   * See README and COPYING for more details.
   */
  
  #ifndef EAP_TLS_COMMON_H
  #define EAP_TLS_COMMON_H
  
  struct eap_ssl_data {
  	struct tls_connection *conn;
  
  	u8 *tls_out;
  	size_t tls_out_len;
  	size_t tls_out_pos;
  	size_t tls_out_limit;
  	u8 *tls_in;
  	size_t tls_in_len;
  	size_t tls_in_left;
  	size_t tls_in_total;
  
  	int phase2;
  	int include_tls_length; /* include TLS length field even if the TLS
  				 * data is not fragmented */
  
  	struct eap_sm *eap;
  };
  
  
  /* EAP TLS Flags */
  #define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80
  #define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
  #define EAP_TLS_FLAGS_START 0x20
  #define EAP_PEAP_VERSION_MASK 0x07
  
   /* could be up to 128 bytes, but only the first 64 bytes are used */
  #define EAP_TLS_KEY_LEN 64
  
  
  int eap_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
  		     struct wpa_ssid *config);
  void eap_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
  u8 * eap_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
  			char *label, size_t len);
  const u8 * eap_tls_data_reassemble(
  	struct eap_sm *sm, struct eap_ssl_data *data, const u8 *in_data,
  	size_t in_len, size_t *out_len, int *need_more_input);
  int eap_tls_process_helper(struct eap_sm *sm, struct eap_ssl_data *data,
  			   int eap_type, int peap_version,
  			   u8 id, const u8 *in_data, size_t in_len,
  			   u8 **out_data, size_t *out_len);
  u8 * eap_tls_build_ack(struct eap_ssl_data *data, size_t *respDataLen, u8 id,
  		       int eap_type, int peap_version);
  int eap_tls_reauth_init(struct eap_sm *sm, struct eap_ssl_data *data);
  int eap_tls_status(struct eap_sm *sm, struct eap_ssl_data *data, char *buf,
  		   size_t buflen, int verbose);
  const u8 * eap_tls_process_init(struct eap_sm *sm, struct eap_ssl_data *data,
  				EapType eap_type, struct eap_method_ret *ret,
  				const u8 *reqData, size_t reqDataLen,
  				size_t *len, u8 *flags);
  
  #endif /* EAP_TLS_COMMON_H */
  