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/*
* hostapd / Test method for vendor specific (expanded) EAP type
* Copyright (c) 2005, Jouni Malinen <j@w1.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.
*/
#include "includes.h"
#include "hostapd.h"
#include "common.h"
#include "eap_i.h"
#define EAP_VENDOR_ID 0xfffefd
#define EAP_VENDOR_TYPE 0xfcfbfaf9
struct eap_vendor_test_data {
enum { INIT, CONFIRM, SUCCESS, FAILURE } state;
};
static const char * eap_vendor_test_state_txt(int state)
{
switch (state) {
case INIT:
return "INIT";
case CONFIRM:
return "CONFIRM";
case SUCCESS:
return "SUCCESS";
case FAILURE:
return "FAILURE";
default:
return "?";
}
}
static void eap_vendor_test_state(struct eap_vendor_test_data *data,
int state)
{
wpa_printf(MSG_DEBUG, "EAP-VENDOR-TEST: %s -> %s",
eap_vendor_test_state_txt(data->state),
eap_vendor_test_state_txt(state));
data->state = state;
}
static void * eap_vendor_test_init(struct eap_sm *sm)
{
struct eap_vendor_test_data *data;
data = wpa_zalloc(sizeof(*data));
if (data == NULL)
return NULL;
data->state = INIT;
return data;
}
static void eap_vendor_test_reset(struct eap_sm *sm, void *priv)
{
struct eap_vendor_test_data *data = priv;
free(data);
}
static u8 * eap_vendor_test_buildReq(struct eap_sm *sm, void *priv, int id,
size_t *reqDataLen)
{
struct eap_vendor_test_data *data = priv;
struct eap_hdr *req;
u8 *pos;
*reqDataLen = sizeof(*req) + 8 + 1;
req = malloc(*reqDataLen);
if (req == NULL) {
wpa_printf(MSG_ERROR, "EAP-VENDOR-TEST: Failed to allocate "
"memory for request");
return NULL;
}
req->code = EAP_CODE_REQUEST;
req->identifier = id;
req->length = htons(*reqDataLen);
pos = (u8 *) (req + 1);
*pos++ = EAP_TYPE_EXPANDED;
WPA_PUT_BE24(pos, EAP_VENDOR_ID);
pos += 3;
WPA_PUT_BE32(pos, EAP_VENDOR_TYPE);
pos += 4;
*pos = data->state == INIT ? 1 : 3;
return (u8 *) req;
}
static Boolean eap_vendor_test_check(struct eap_sm *sm, void *priv,
u8 *respData, size_t respDataLen)
{
struct eap_hdr *resp;
u8 *pos;
size_t len;
int vendor;
u32 method;
resp = (struct eap_hdr *) respData;
pos = (u8 *) (resp + 1);
if (respDataLen < sizeof(*resp))
return TRUE;
len = ntohs(resp->length);
if (len > respDataLen)
return TRUE;
if (len < sizeof(*resp) + 8 || *pos != EAP_TYPE_EXPANDED) {
wpa_printf(MSG_INFO, "EAP-VENDOR-TEST: Invalid frame");
return TRUE;
}
pos++;
vendor = WPA_GET_BE24(pos);
pos += 3;
method = WPA_GET_BE32(pos);
pos++;
if (vendor != EAP_VENDOR_ID || method != EAP_VENDOR_TYPE)
return TRUE;
return FALSE;
}
static void eap_vendor_test_process(struct eap_sm *sm, void *priv,
u8 *respData, size_t respDataLen)
{
struct eap_vendor_test_data *data = priv;
struct eap_hdr *resp;
u8 *pos;
resp = (struct eap_hdr *) respData;
pos = (u8 *) (resp + 1);
pos += 8; /* Skip expanded header */
if (data->state == INIT) {
if (*pos == 2)
eap_vendor_test_state(data, CONFIRM);
else
eap_vendor_test_state(data, FAILURE);
} else if (data->state == CONFIRM) {
if (*pos == 4)
eap_vendor_test_state(data, SUCCESS);
else
eap_vendor_test_state(data, FAILURE);
} else
eap_vendor_test_state(data, FAILURE);
}
static Boolean eap_vendor_test_isDone(struct eap_sm *sm, void *priv)
{
struct eap_vendor_test_data *data = priv;
return data->state == SUCCESS;
}
static u8 * eap_vendor_test_getKey(struct eap_sm *sm, void *priv, size_t *len)
{
struct eap_vendor_test_data *data = priv;
u8 *key;
const int key_len = 64;
if (data->state != SUCCESS)
return NULL;
key = malloc(key_len);
if (key == NULL)
return NULL;
memset(key, 0x11, key_len / 2);
memset(key + key_len / 2, 0x22, key_len / 2);
*len = key_len;
return key;
}
static Boolean eap_vendor_test_isSuccess(struct eap_sm *sm, void *priv)
{
struct eap_vendor_test_data *data = priv;
return data->state == SUCCESS;
}
int eap_server_vendor_test_register(void)
{
struct eap_method *eap;
int ret;
eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
EAP_VENDOR_ID, EAP_VENDOR_TYPE,
"VENDOR-TEST");
if (eap == NULL)
return -1;
eap->init = eap_vendor_test_init;
eap->reset = eap_vendor_test_reset;
eap->buildReq = eap_vendor_test_buildReq;
eap->check = eap_vendor_test_check;
eap->process = eap_vendor_test_process;
eap->isDone = eap_vendor_test_isDone;
eap->getKey = eap_vendor_test_getKey;
eap->isSuccess = eap_vendor_test_isSuccess;
ret = eap_server_method_register(eap);
if (ret)
eap_server_method_free(eap);
return ret;
}
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