static u8 * eap_otp_process(struct eap_sm *sm, void *priv,
struct eap_method_ret *ret,
const u8 *reqData, size_t reqDataLen,
size_t *respDataLen)
{
const struct eap_hdr *req;
struct eap_hdr *resp;
const u8 *pos, *password;
u8 *rpos;
size_t password_len, len;
int otp;
pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_OTP,
reqData, reqDataLen, &len);
if (pos == NULL) {
ret->ignore = TRUE;
return NULL;
}
req = (const struct eap_hdr *) reqData;
wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-OTP: Request message",
pos, len);
password = eap_get_config_otp(sm, &password_len);
if (password)
otp = 1;
else {
password = eap_get_config_password(sm, &password_len);
otp = 0;
}
if (password == NULL) {
wpa_printf(MSG_INFO, "EAP-OTP: Password not configured");
eap_sm_request_otp(sm, (const char *) pos, len);
ret->ignore = TRUE;
return NULL;
}
ret->ignore = FALSE;
ret->methodState = METHOD_DONE;
ret->decision = DECISION_COND_SUCC;
ret->allowNotifications = FALSE;
resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_OTP, respDataLen,
password_len, EAP_CODE_RESPONSE, req->identifier,
&rpos);
if (resp == NULL)
return NULL;
os_memcpy(rpos, password, password_len);
wpa_hexdump_ascii_key(MSG_MSGDUMP, "EAP-OTP: Response",
password, password_len);
if (otp) {
wpa_printf(MSG_DEBUG, "EAP-OTP: Forgetting used password");
eap_clear_config_otp(sm);
}
return (u8 *) resp;
}
static struct wpabuf * eap_gtc_process(struct eap_sm *sm, void *priv,
struct eap_method_ret *ret,
const struct wpabuf *reqData)
{
struct eap_gtc_data *data = priv;
struct wpabuf *resp;
const u8 *pos, *password, *identity;
size_t password_len, identity_len, len, plen;
int otp;
u8 id;
pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_GTC, reqData, &len);
if (pos == NULL) {
ret->ignore = TRUE;
return NULL;
}
id = eap_get_id(reqData);
wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-GTC: Request message", pos, len);
if (data->prefix &&
(len < 10 || os_memcmp(pos, "CHALLENGE=", 10) != 0)) {
wpa_printf(MSG_DEBUG, "EAP-GTC: Challenge did not start with "
"expected prefix");
wpa_printf(MSG_DEBUG, "Unrecoverable error - Restarting\n");
/* Send an empty response in order to allow tunneled
* acknowledgement of the failure. This will also cover the
* error case which seems to use EAP-MSCHAPv2 like error
* reporting with EAP-GTC inside EAP-FAST tunnel. */
resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_GTC,
0, EAP_CODE_RESPONSE, id);
return resp;
}
password = eap_get_config_otp(sm, &password_len);
if (password)
otp = 1;
else {
password = eap_get_config_password(sm, &password_len);
otp = 0;
}
if (password == NULL) {
wpa_printf(MSG_INFO, "EAP-GTC: Password not configured");
eap_sm_request_otp(sm, (const char *) pos, len);
ret->ignore = TRUE;
return NULL;
}
ret->ignore = FALSE;
ret->methodState = data->prefix ? METHOD_MAY_CONT : METHOD_DONE;
ret->decision = DECISION_COND_SUCC;
ret->allowNotifications = FALSE;
plen = password_len;
identity = eap_get_config_identity(sm, &identity_len);
if (identity == NULL)
return NULL;
if (data->prefix)
plen += 9 + identity_len + 1;
resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_GTC, plen,
EAP_CODE_RESPONSE, id);
if (resp == NULL)
return NULL;
if (data->prefix) {
wpabuf_put_data(resp, "RESPONSE=", 9);
wpabuf_put_data(resp, identity, identity_len);
wpabuf_put_u8(resp, '\0');
}
wpabuf_put_data(resp, password, password_len);
wpa_hexdump_ascii_key(MSG_MSGDUMP, "EAP-GTC: Response",
wpabuf_head_u8(resp) + sizeof(struct eap_hdr) +
1, plen);
if (otp) {
wpa_printf(MSG_DEBUG, "EAP-GTC: Forgetting used password");
eap_clear_config_otp(sm);
}
return resp;
}
