114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/*
|
|
* WPA Supplicant / EAP-OTP (RFC 3748)
|
|
* Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.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 <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "common.h"
|
|
#include "eap_i.h"
|
|
#include "wpa_supplicant.h"
|
|
#include "config_ssid.h"
|
|
|
|
|
|
static void * eap_otp_init(struct eap_sm *sm)
|
|
{
|
|
return (void *) 1;
|
|
}
|
|
|
|
|
|
static void eap_otp_deinit(struct eap_sm *sm, void *priv)
|
|
{
|
|
}
|
|
|
|
|
|
static u8 * eap_otp_process(struct eap_sm *sm, void *priv,
|
|
struct eap_method_ret *ret,
|
|
u8 *reqData, size_t reqDataLen,
|
|
size_t *respDataLen)
|
|
{
|
|
struct wpa_ssid *config = eap_get_config(sm);
|
|
struct eap_hdr *req, *resp;
|
|
u8 *pos, *password;
|
|
size_t password_len, len;
|
|
|
|
req = (struct eap_hdr *) reqData;
|
|
pos = (u8 *) (req + 1);
|
|
if (reqDataLen < sizeof(*req) + 1 || *pos != EAP_TYPE_OTP ||
|
|
(len = be_to_host16(req->length)) > reqDataLen) {
|
|
wpa_printf(MSG_INFO, "EAP-OTP: Invalid frame");
|
|
ret->ignore = TRUE;
|
|
return NULL;
|
|
}
|
|
pos++;
|
|
wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-OTP: Request message",
|
|
pos, len - sizeof(*req) - 1);
|
|
|
|
if (config == NULL ||
|
|
(config->password == NULL && config->otp == NULL)) {
|
|
wpa_printf(MSG_INFO, "EAP-OTP: Password not configured");
|
|
eap_sm_request_otp(sm, config, (char *) pos,
|
|
len - sizeof(*req) - 1);
|
|
ret->ignore = TRUE;
|
|
return NULL;
|
|
}
|
|
|
|
if (config->otp) {
|
|
password = config->otp;
|
|
password_len = config->otp_len;
|
|
} else {
|
|
password = config->password;
|
|
password_len = config->password_len;
|
|
}
|
|
|
|
ret->ignore = FALSE;
|
|
|
|
ret->methodState = METHOD_DONE;
|
|
ret->decision = DECISION_COND_SUCC;
|
|
ret->allowNotifications = FALSE;
|
|
|
|
*respDataLen = sizeof(struct eap_hdr) + 1 + password_len;
|
|
resp = malloc(*respDataLen);
|
|
if (resp == NULL)
|
|
return NULL;
|
|
resp->code = EAP_CODE_RESPONSE;
|
|
resp->identifier = req->identifier;
|
|
resp->length = host_to_be16(*respDataLen);
|
|
pos = (u8 *) (resp + 1);
|
|
*pos++ = EAP_TYPE_OTP;
|
|
memcpy(pos, password, password_len);
|
|
wpa_hexdump_ascii_key(MSG_MSGDUMP, "EAP-OTP: Response",
|
|
password, password_len);
|
|
|
|
if (config->otp) {
|
|
wpa_printf(MSG_DEBUG, "EAP-OTP: Forgetting used password");
|
|
memset(config->otp, 0, config->otp_len);
|
|
free(config->otp);
|
|
config->otp = NULL;
|
|
config->otp_len = 0;
|
|
}
|
|
|
|
return (u8 *) resp;
|
|
}
|
|
|
|
|
|
const struct eap_method eap_method_otp =
|
|
{
|
|
.method = EAP_TYPE_OTP,
|
|
.name = "OTP",
|
|
.init = eap_otp_init,
|
|
.deinit = eap_otp_deinit,
|
|
.process = eap_otp_process,
|
|
};
|