2 * eap.h Header file containing the interfaces for all EAP types.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * Copyright 2001 hereUare Communications, Inc. <raghud@hereuare.com>
21 * Copyright 2003 Alan DeKok <aland@freeradius.org>
29 #include <sys/types.h>
33 #include <netinet/in.h>
42 #include "rad_assert.h"
44 #define PW_EAP_REQUEST 1
45 #define PW_EAP_RESPONSE 2
46 #define PW_EAP_SUCCESS 3
47 #define PW_EAP_FAILURE 4
48 #define PW_EAP_MAX_CODES 4
50 #define PW_EAP_IDENTITY 1
51 #define PW_EAP_NOTIFICATION 2
57 #define PW_EAP_LEAP 17
58 #define PW_EAP_TTLS 21
59 #define PW_EAP_PEAP 25
60 #define PW_EAP_MAX_TYPES 25
62 #define EAP_HEADER_LEN 4
65 * EAP-Type specific data.
67 typedef struct eaptype_t {
74 * Structure to hold EAP data.
76 * length = code + id + length + type + type.data
79 typedef struct eap_packet {
85 unsigned char *packet;
89 * EAP_DS contains all the received/sending information
90 * response = Received EAP packet
91 * request = Sending EAP packet
93 * Note: We are authentication server,
94 * we get ONLY EAP-Responses and
95 * we send EAP-Request/EAP-success/EAP-failure
97 typedef struct eap_ds {
104 * Currently there are only 2 types
105 * of operations defined,
106 * apart from attach & detach for each EAP-Type.
108 typedef enum operation_t {
116 * EAP_HANDLER is the interface for any EAP-Type.
117 * Each handler contains information for one specific EAP-Type.
118 * This way we don't need to change any interfaces in future.
119 * It is also a list of EAP-request handlers waiting for EAP-response
120 * eap_id = copy of the eap packet we sent to the
122 * next = pointer to next
123 * state = state attribute from the reply we sent
124 * state_len = length of data in the state attribute.
125 * src_ipaddr = client which sent us the RADIUS request containing
126 * this EAP conversation.
127 * eap_id = copy of EAP id we sent to the client.
128 * timestamp = timestamp when this handler was last used.
129 * identity = Identity, as obtained, from EAP-Identity response.
130 * request = RADIUS request data structure
131 * prev_eapds = Previous EAP request, for which eap_ds contains the response.
132 * eap_ds = Current EAP response.
133 * opaque = EAP-Type holds some data that corresponds to the current
134 * EAP-request/response
135 * free_opaque = To release memory held by opaque,
136 * when this handler is timedout & needs to be deleted.
137 * It is the responsibility of the specific EAP-TYPE
138 * to avoid any memory leaks in opaque
139 * Hence this pointer should be provided by the EAP-Type
140 * if opaque is not NULL
141 * status = finished/onhold/..
143 #define EAP_STATE_LEN (AUTH_VECTOR_LEN)
144 typedef struct _eap_handler {
145 struct _eap_handler *next;
147 uint8_t state[EAP_STATE_LEN];
150 unsigned int eap_type;
156 char *identity; /* User name from EAP-Identity */
162 void (*free_opaque)(void *opaque);
170 * Interface to call EAP sub mdoules
172 typedef struct eap_type_t {
174 int (*attach)(CONF_SECTION *conf, void **type_data);
175 int (*initiate)(void *type_data, EAP_HANDLER *handler);
176 int (*authorize)(void *type_data, EAP_HANDLER *handler);
177 int (*authenticate)(void *type_data, EAP_HANDLER *handler);
178 int (*detach)(void *type_data);