static struct wpabuf * eap_ikev2_buildReq(struct eap_sm *sm, void *priv, u8 id)
{
struct eap_ikev2_data *data = priv;
switch (data->state) {
case MSG:
if (data->out_buf == NULL) {
data->out_buf = ikev2_initiator_build(&data->ikev2);
if (data->out_buf == NULL) {
wpa_printf(MSG_DEBUG, "EAP-IKEV2: Failed to "
"generate IKEv2 message");
return NULL;
}
data->out_used = 0;
}
/* pass through */
case WAIT_FRAG_ACK:
return eap_ikev2_build_msg(data, id);
case FRAG_ACK:
return eap_ikev2_build_frag_ack(id, EAP_CODE_REQUEST);
default:
wpa_printf(MSG_DEBUG, "EAP-IKEV2: Unexpected state %d in "
"buildReq", data->state);
return NULL;
}
}
static struct wpabuf * eap_ikev2_process_fragment(struct eap_ikev2_data *data,
struct eap_method_ret *ret,
u8 id, u8 flags,
u32 message_length,
const u8 *buf, size_t len)
{
/* Process a fragment that is not the last one of the message */
if (data->in_buf == NULL && !(flags & IKEV2_FLAGS_LENGTH_INCLUDED)) {
wpa_printf(MSG_DEBUG, "EAP-IKEV2: No Message Length field in "
"a fragmented packet");
ret->ignore = TRUE;
return NULL;
}
if (data->in_buf == NULL) {
/* First fragment of the message */
data->in_buf = wpabuf_alloc(message_length);
if (data->in_buf == NULL) {
wpa_printf(MSG_DEBUG, "EAP-IKEV2: No memory for "
"message");
ret->ignore = TRUE;
return NULL;
}
wpabuf_put_data(data->in_buf, buf, len);
wpa_printf(MSG_DEBUG, "EAP-IKEV2: Received %lu bytes in first "
"fragment, waiting for %lu bytes more",
(unsigned long) len,
(unsigned long) wpabuf_tailroom(data->in_buf));
}
return eap_ikev2_build_frag_ack(id, EAP_CODE_RESPONSE);
}
