static enum http_reply_code
web_process_put_message(struct upnp_wps_device_sm *sm, char *data,
struct wpabuf **reply, const char **replyname)
{
struct wpabuf *msg;
static const char *name = "NewOutMessage";
enum http_reply_code ret;
enum wps_process_res res;
enum wsc_op_code op_code;
/*
* PutMessage is used by external UPnP-based Registrar to perform WPS
* operation with the access point itself; as compared with
* PutWLANResponse which is for proxying.
*/
wpa_printf(MSG_DEBUG, "WPS UPnP: PutMessage");
msg = xml_get_base64_item(data, "NewInMessage", &ret);
if (msg == NULL)
return ret;
res = wps_process_msg(sm->peer.wps, WSC_UPnP, msg);
if (res == WPS_FAILURE)
*reply = NULL;
else
*reply = wps_get_msg(sm->peer.wps, &op_code);
wpabuf_free(msg);
if (*reply == NULL)
return HTTP_INTERNAL_SERVER_ERROR;
*replyname = name;
return HTTP_OK;
}
static struct wpabuf *
hostapd_rx_req_put_message(void *priv, struct upnp_wps_peer *peer,
const struct wpabuf *msg)
{
enum wps_process_res res;
enum wsc_op_code op_code;
/* PutMessage: msg = InMessage, return OutMessage */
res = wps_process_msg(peer->wps, WSC_UPnP, msg);
if (res == WPS_FAILURE)
return NULL;
return wps_get_msg(peer->wps, &op_code);
}
static void wps_er_ap_process(struct wps_er_ap *ap, struct wpabuf *msg)
{
enum wps_process_res res;
struct wps_parse_attr attr;
enum wsc_op_code op_code;
op_code = WSC_MSG;
if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) {
switch (*attr.msg_type) {
case WPS_WSC_ACK:
op_code = WSC_ACK;
break;
case WPS_WSC_NACK:
op_code = WSC_NACK;
break;
case WPS_WSC_DONE:
op_code = WSC_Done;
break;
}
}
res = wps_process_msg(ap->wps, op_code, msg);
if (res == WPS_CONTINUE) {
struct wpabuf *next = wps_get_msg(ap->wps, &op_code);
if (next) {
wps_er_ap_put_message(ap, next);
wpabuf_free(next);
} else {
wpa_printf(MSG_DEBUG, "WPS ER: Failed to build "
"message");
wps_deinit(ap->wps);
ap->wps = NULL;
}
} else if (res == WPS_DONE) {
wpa_printf(MSG_DEBUG, "WPS ER: Protocol run done");
wps_deinit(ap->wps);
ap->wps = NULL;
} else {
wpa_printf(MSG_DEBUG, "WPS ER: Failed to process message from "
"AP (res=%d)", res);
wps_deinit(ap->wps);
ap->wps = NULL;
}
}
static void wps_er_sta_process(struct wps_er_sta *sta, struct wpabuf *msg,
enum wsc_op_code op_code)
{
enum wps_process_res res;
res = wps_process_msg(sta->wps, op_code, msg);
if (res == WPS_CONTINUE) {
struct wpabuf *next = wps_get_msg(sta->wps, &op_code);
if (next)
wps_er_sta_send_msg(sta, next);
} else {
wpa_printf(MSG_DEBUG, "WPS ER: Protocol run %s with the "
"enrollee (res=%d)",
res == WPS_DONE ? "succeeded" : "failed", res);
wps_deinit(sta->wps);
sta->wps = NULL;
if (res == WPS_DONE) {
/* Remove the STA entry after short timeout */
eloop_cancel_timeout(wps_er_sta_timeout, sta, NULL);
eloop_register_timeout(10, 0, wps_er_sta_timeout, sta,
NULL);
}
}
}
static void eap_wsc_process(struct eap_sm *sm, void *priv,
struct wpabuf *respData)
{
struct eap_wsc_data *data = priv;
const u8 *start, *pos, *end;
size_t len;
u8 op_code, flags;
u16 message_length = 0;
enum wps_process_res res;
struct wpabuf tmpbuf;
eloop_cancel_timeout(eap_wsc_ext_reg_timeout, sm, data);
if (data->ext_reg_timeout) {
eap_wsc_state(data, FAIL);
return;
}
pos = eap_hdr_validate(EAP_VENDOR_WFA, EAP_VENDOR_TYPE_WSC,
respData, &len);
if (pos == NULL || len < 2)
return; /* Should not happen; message already verified */
start = pos;
end = start + len;
op_code = *pos++;
flags = *pos++;
if (flags & WSC_FLAGS_LF) {
if (end - pos < 2) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Message underflow");
return;
}
message_length = WPA_GET_BE16(pos);
pos += 2;
if (message_length < end - pos) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Invalid Message "
"Length");
return;
}
}
wpa_printf(MSG_DEBUG, "EAP-WSC: Received packet: Op-Code %d "
"Flags 0x%x Message Length %d",
op_code, flags, message_length);
if (data->state == WAIT_FRAG_ACK) {
if (op_code != WSC_FRAG_ACK) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Unexpected Op-Code %d "
"in WAIT_FRAG_ACK state", op_code);
eap_wsc_state(data, FAIL);
return;
}
wpa_printf(MSG_DEBUG, "EAP-WSC: Fragment acknowledged");
eap_wsc_state(data, MESG);
return;
}
if (op_code != WSC_ACK && op_code != WSC_NACK && op_code != WSC_MSG &&
op_code != WSC_Done) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Unexpected Op-Code %d",
op_code);
eap_wsc_state(data, FAIL);
return;
}
if (data->in_buf &&
eap_wsc_process_cont(data, pos, end - pos, op_code) < 0) {
eap_wsc_state(data, FAIL);
return;
}
if (flags & WSC_FLAGS_MF) {
if (eap_wsc_process_fragment(data, flags, op_code,
message_length, pos, end - pos) <
0)
eap_wsc_state(data, FAIL);
else
eap_wsc_state(data, FRAG_ACK);
return;
}
if (data->in_buf == NULL) {
/* Wrap unfragmented messages as wpabuf without extra copy */
wpabuf_set(&tmpbuf, pos, end - pos);
data->in_buf = &tmpbuf;
}
res = wps_process_msg(data->wps, op_code, data->in_buf);
switch (res) {
case WPS_DONE:
wpa_printf(MSG_DEBUG, "EAP-WSC: WPS processing completed "
"successfully - report EAP failure");
eap_wsc_state(data, FAIL);
break;
case WPS_CONTINUE:
eap_wsc_state(data, MESG);
break;
case WPS_FAILURE:
wpa_printf(MSG_DEBUG, "EAP-WSC: WPS processing failed");
eap_wsc_state(data, FAIL);
break;
case WPS_PENDING:
eap_wsc_state(data, MESG);
sm->method_pending = METHOD_PENDING_WAIT;
eloop_cancel_timeout(eap_wsc_ext_reg_timeout, sm, data);
eloop_register_timeout(5, 0, eap_wsc_ext_reg_timeout,
sm, data);
break;
}
if (data->in_buf != &tmpbuf)
wpabuf_free(data->in_buf);
data->in_buf = NULL;
}
static struct wpabuf * eap_wsc_process(struct eap_sm *sm, void *priv,
struct eap_method_ret *ret,
const struct wpabuf *reqData)
{
struct eap_wsc_data *data = priv;
const u8 *start, *pos, *end;
size_t len;
u8 op_code, flags, id;
u16 message_length = 0;
enum wps_process_res res;
struct wpabuf tmpbuf;
struct wpabuf *r;
pos = eap_hdr_validate(EAP_VENDOR_WFA, EAP_VENDOR_TYPE_WSC, reqData,
&len);
if (pos == NULL || len < 2) {
ret->ignore = TRUE;
return NULL;
}
id = eap_get_id(reqData);
start = pos;
end = start + len;
op_code = *pos++;
flags = *pos++;
if (flags & WSC_FLAGS_LF) {
if (end - pos < 2) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Message underflow");
ret->ignore = TRUE;
return NULL;
}
message_length = WPA_GET_BE16(pos);
pos += 2;
if (message_length < end - pos || message_length > 50000) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Invalid Message "
"Length");
ret->ignore = TRUE;
return NULL;
}
}
wpa_printf(MSG_DEBUG, "EAP-WSC: Received packet: Op-Code %d "
"Flags 0x%x Message Length %d",
op_code, flags, message_length);
if (data->state == WAIT_FRAG_ACK) {
if (op_code != WSC_FRAG_ACK) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Unexpected Op-Code %d "
"in WAIT_FRAG_ACK state", op_code);
ret->ignore = TRUE;
return NULL;
}
wpa_printf(MSG_DEBUG, "EAP-WSC: Fragment acknowledged");
eap_wsc_state(data, MESG);
return eap_wsc_build_msg(data, ret, id);
}
if (op_code != WSC_ACK && op_code != WSC_NACK && op_code != WSC_MSG &&
op_code != WSC_Done && op_code != WSC_Start) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Unexpected Op-Code %d",
op_code);
ret->ignore = TRUE;
return NULL;
}
if (data->state == WAIT_START) {
if (op_code != WSC_Start) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Unexpected Op-Code %d "
"in WAIT_START state", op_code);
ret->ignore = TRUE;
return NULL;
}
wpa_printf(MSG_DEBUG, "EAP-WSC: Received start");
eap_wsc_state(data, MESG);
/* Start message has empty payload, skip processing */
goto send_msg;
} else if (op_code == WSC_Start) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Unexpected Op-Code %d",
op_code);
ret->ignore = TRUE;
return NULL;
}
if (data->in_buf &&
eap_wsc_process_cont(data, pos, end - pos, op_code) < 0) {
ret->ignore = TRUE;
return NULL;
}
if (flags & WSC_FLAGS_MF) {
return eap_wsc_process_fragment(data, ret, id, flags, op_code,
message_length, pos,
end - pos);
}
if (data->in_buf == NULL) {
/* Wrap unfragmented messages as wpabuf without extra copy */
wpabuf_set(&tmpbuf, pos, end - pos);
data->in_buf = &tmpbuf;
}
res = wps_process_msg(data->wps, op_code, data->in_buf);
switch (res) {
case WPS_DONE:
wpa_printf(MSG_DEBUG, "EAP-WSC: WPS processing completed "
"successfully - wait for EAP failure");
eap_wsc_state(data, FAIL);
break;
case WPS_CONTINUE:
eap_wsc_state(data, MESG);
break;
case WPS_FAILURE:
case WPS_PENDING:
wpa_printf(MSG_DEBUG, "EAP-WSC: WPS processing failed");
eap_wsc_state(data, FAIL);
break;
}
if (data->in_buf != &tmpbuf)
wpabuf_free(data->in_buf);
data->in_buf = NULL;
send_msg:
if (data->out_buf == NULL) {
data->out_buf = wps_get_msg(data->wps, &data->out_op_code);
if (data->out_buf == NULL) {
wpa_printf(MSG_DEBUG, "EAP-WSC: Failed to receive "
"message from WPS");
eap_wsc_state(data, FAIL);
ret->methodState = METHOD_DONE;
ret->decision = DECISION_FAIL;
return NULL;
}
data->out_used = 0;
}
eap_wsc_state(data, MESG);
r = eap_wsc_build_msg(data, ret, id);
if (data->state == FAIL && ret->methodState == METHOD_DONE) {
/* Use reduced client timeout for WPS to avoid long wait */
if (sm->ClientTimeout > 2)
sm->ClientTimeout = 2;
}
return r;
}