src/libstrongswan/eap/eap.h

   1 /*
   2  * Copyright (C) 2012 Tobias Brunner
   3  * Copyright (C) 2010 Martin Willi
   4  * Copyright (C) 2010 revosec AG
   5  * Hochschule fuer Technik Rapperswil
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * for more details.
  16  */
  17
  18 /**
  19  * @defgroup leap eap
  20  * @{ @ingroup libstrongswan
  21  */
  22
  23 #ifndef EAP_H_
  24 #define EAP_H_
  25
  26 typedef enum eap_code_t eap_code_t;
  27 typedef enum eap_type_t eap_type_t;
  28 typedef struct eap_vendor_type_t eap_vendor_type_t;
  29
  30 #include <library.h>
  31
  32 /**
  33  * EAP code, type of an EAP message
  34  */
  35 enum eap_code_t {
  36         EAP_REQUEST = 1,
  37         EAP_RESPONSE = 2,
  38         EAP_SUCCESS = 3,
  39         EAP_FAILURE = 4,
  40 };
  41
  42 /**
  43  * enum names for eap_code_t.
  44  */
  45 extern enum_name_t *eap_code_names;
  46
  47 /**
  48  * short string enum names for eap_code_t.
  49  */
  50 extern enum_name_t *eap_code_short_names;
  51
  52 /**
  53  * EAP types, defines the EAP method implementation
  54  */
  55 enum eap_type_t {
  56         EAP_IDENTITY = 1,
  57         EAP_NOTIFICATION = 2,
  58         EAP_NAK = 3,
  59         EAP_MD5 = 4,
  60         EAP_OTP = 5,
  61         EAP_GTC = 6,
  62         EAP_TLS = 13,
  63         EAP_SIM = 18,
  64         EAP_TTLS = 21,
  65         EAP_AKA = 23,
  66         EAP_PEAP = 25,
  67         EAP_MSCHAPV2 = 26,
  68         EAP_MSTLV = 33,
  69         EAP_TNC = 38,
  70         EAP_EXPANDED = 254,
  71         EAP_EXPERIMENTAL = 255,
  72         /** not a method, but an implementation providing different methods */
  73         EAP_RADIUS = 256,
  74         /** not a method, select actual method dynamically based on e.g. the ID */
  75         EAP_DYNAMIC = 257,
  76 };
  77
  78 /**
  79  * enum names for eap_type_t.
  80  */
  81 extern enum_name_t *eap_type_names;
  82
  83 /**
  84  * short string enum names for eap_type_t.
  85  */
  86 extern enum_name_t *eap_type_short_names;
  87
  88 /**
  89  * Struct that stores EAP type and vendor ID
  90  */
  91 struct eap_vendor_type_t {
  92
  93         /**
  94          * EAP type
  95          */
  96         eap_type_t type;
  97
  98         /**
  99          * Vendor Id
 100          */
 101         u_int32_t vendor;
 102 };
 103
 104 /**
 105  * EAP packet format
 106  */
 107 typedef struct __attribute__((packed)) {
 108         u_int8_t code;
 109         u_int8_t identifier;
 110         u_int16_t length;
 111         u_int8_t type;
 112         u_int8_t data;
 113 } eap_packet_t;
 114
 115 /**
 116  * Lookup the EAP method type from a string.
 117  *
 118  * @param name          EAP method name (such as "md5", "aka")
 119  * @return                      method type, 0 if unknown
 120  */
 121 eap_type_t eap_type_from_string(char *name);
 122
 123 /**
 124  * Parse a string of the form [eap-]type[-vendor].
 125  *
 126  * @param str           EAP method string
 127  * @return                      parsed type (gets allocated), NULL if unknown or failed
 128  */
 129 eap_vendor_type_t *eap_vendor_type_from_string(char *str);
 130
 131 #endif /** EAP_H_ @}*/