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>
28 #include <sys/types.h>
32 #include <netinet/in.h>
42 #define PW_EAP_REQUEST 1
43 #define PW_EAP_RESPONSE 2
44 #define PW_EAP_SUCCESS 3
45 #define PW_EAP_FAILURE 4
46 #define PW_EAP_MAX_CODES 4
48 #define PW_EAP_IDENTITY 1
49 #define PW_EAP_NOTIFICATION 2
55 #define PW_EAP_MAX_TYPES 13
57 #define EAP_HEADER_LEN 4
60 * EAP-Type specific data.
62 typedef struct eaptype_t {
69 * Structure to hold EAP data.
71 * length = code + id + length + type + type.data
74 typedef struct eap_packet {
80 unsigned char *packet;
84 * EAP_DS contains all the received/sending information
85 * response = Received EAP packet
86 * request = Sending EAP packet
88 * Note: We are authentication server,
89 * we get ONLY EAP-Responses and
90 * we send EAP-Request/EAP-success/EAP-failure
92 typedef struct eap_ds {
98 * EAP_HANDLER is the interface for any EAP-Type.
99 * Each handler contains information for one specific EAP-Type.
100 * This way we don't need to change any interfaces in future.
101 * It is also a list of EAP-request handlers waiting for EAP-response
103 * id = Length + Request-ID + State + (NAS-IP-Address|NAS-Identifier)
104 * identity = Identity, as obtained, from EAP-Identity response.
105 * username = as obtained in Radius request, It might differ from identity.
106 * configured = List of configured values for this user.
107 * prev_eapds = Previous EAP request, for which eap_ds contains the response.
108 * eap_ds = Current EAP response.
109 * opaque = EAP-Type holds some data that corresponds to the current
110 * EAP-request/response
111 * free_opaque = To release memory held by opaque,
112 * when this handler is timedout & needs to be deleted.
113 * It is the responsibility of the specific EAP-TYPE
114 * to avoid any memory leaks in opaque
115 * Hence this pointer should be provided by the EAP-Type
116 * if opaque is not NULL
117 * timestamp = timestamp when this handler is created.
118 * status = finished/onhold/..
120 typedef struct _eap_handler {
123 VALUE_PAIR *username;
124 VALUE_PAIR *configured;
132 void (*free_opaque)(void **opaque);
137 struct _eap_handler *next;
141 * Interface to call EAP sub mdoules
143 typedef struct eap_type_t {
145 int (*attach)(CONF_SECTION *conf, void **type_arg);
146 int (*initiate)(void *type_arg, EAP_HANDLER *handler);
147 int (*authenticate)(void *type_arg, EAP_HANDLER *handler);
148 int (*detach)(void **type_arg);