contrib/hostapd/ieee802_1x.h

   1 /*
   2  * hostapd / IEEE 802.1X Authenticator
   3  * Copyright (c) 2002-2005, 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 IEEE802_1X_H
  16 #define IEEE802_1X_H
  17
  18 /* draft-congdon-radius-8021x-20.txt */
  19
  20 struct ieee802_1x_eapol_key {
  21         u8 type;
  22         u16 key_length;
  23         u8 replay_counter[8]; /* does not repeat within the life of the keying
  24                                * material used to encrypt the Key field;
  25                                * 64-bit NTP timestamp MAY be used here */
  26         u8 key_iv[16]; /* cryptographically random number */
  27         u8 key_index; /* key flag in the most significant bit:
  28                        * 0 = broadcast (default key),
  29                        * 1 = unicast (key mapping key); key index is in the
  30                        * 7 least significant bits */
  31         u8 key_signature[16]; /* HMAC-MD5 message integrity check computed with
  32                                * MS-MPPE-Send-Key as the key */
  33
  34         /* followed by key: if packet body length = 44 + key length, then the
  35          * key field (of key_length bytes) contains the key in encrypted form;
  36          * if packet body length = 44, key field is absent and key_length
  37          * represents the number of least significant octets from
  38          * MS-MPPE-Send-Key attribute to be used as the keying material;
  39          * RC4 key used in encryption = Key-IV + MS-MPPE-Recv-Key */
  40 } __attribute__ ((packed));
  41
  42
  43 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
  44                         size_t len);
  45 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta);
  46 void ieee802_1x_free_station(struct sta_info *sta);
  47
  48 void ieee802_1x_request_identity(struct hostapd_data *hapd,
  49                                  struct sta_info *sta);
  50 void ieee802_1x_tx_canned_eap(struct hostapd_data *hapd, struct sta_info *sta,
  51                               int success);
  52 void ieee802_1x_tx_req(struct hostapd_data *hapd, struct sta_info *sta);
  53 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta);
  54 void ieee802_1x_send_resp_to_server(struct hostapd_data *hapd,
  55                                     struct sta_info *sta);
  56 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta);
  57 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
  58                                    struct sta_info *sta, int authorized);
  59 void ieee802_1x_dump_state(FILE *f, const char *prefix, struct sta_info *sta);
  60 int ieee802_1x_init(struct hostapd_data *hapd);
  61 void ieee802_1x_deinit(struct hostapd_data *hapd);
  62 int ieee802_1x_reconfig(struct hostapd_data *hapd,
  63                         struct hostapd_config *oldconf,
  64                         struct hostapd_bss_config *oldbss);
  65 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
  66                          u8 *buf, size_t len, int ack);
  67 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len);
  68 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
  69                                  int idx);
  70 u8 * ieee802_1x_get_key_crypt(struct eapol_state_machine *sm, size_t *len);
  71 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
  72                                     int enabled);
  73 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
  74                                   int valid);
  75 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth);
  76 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen);
  77 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
  78                            char *buf, size_t buflen);
  79 void hostapd_get_ntp_timestamp(u8 *buf);
  80 void ieee802_1x_finished(struct hostapd_data *hapd, struct sta_info *sta,
  81                          int success);
  82 char *eap_type_text(u8 type);
  83
  84 struct radius_class_data;
  85
  86 void ieee802_1x_free_radius_class(struct radius_class_data *class);
  87 int ieee802_1x_copy_radius_class(struct radius_class_data *dst,
  88                                  struct radius_class_data *src);
  89
  90 #endif /* IEEE802_1X_H */