int wps_build_oob_dev_password(struct wpabuf *msg, struct wps_context *wps)
{
u8 dev_password_bin[WPS_OOB_DEVICE_PASSWORD_LEN];
wpa_printf(MSG_DEBUG, "WPS: * OOB Device Password");
if (os_get_random((u8 *) &wps->oob_dev_pw_id, sizeof(u16)) < 0) {
wpa_printf(MSG_ERROR, "WPS: device password id "
"generation error");
return -1;
}
wps->oob_dev_pw_id |= 0x0010;
if (random_get_bytes(dev_password_bin, WPS_OOB_DEVICE_PASSWORD_LEN) <
0) {
wpa_printf(MSG_ERROR, "WPS: OOB device password "
"generation error");
return -1;
}
wpa_snprintf_hex_uppercase(
wpabuf_put(wps->oob_conf.dev_password,
wpabuf_size(wps->oob_conf.dev_password)),
wpabuf_size(wps->oob_conf.dev_password),
dev_password_bin, WPS_OOB_DEVICE_PASSWORD_LEN);
return wps_build_oob_dev_pw(msg, wps->oob_dev_pw_id, wps->dh_pubkey,
dev_password_bin,
WPS_OOB_DEVICE_PASSWORD_LEN);
}
struct wpabuf * wps_build_nfc_handover_req_p2p(struct wps_context *ctx,
struct wpabuf *nfc_dh_pubkey)
{
struct wpabuf *msg;
if (ctx == NULL)
return NULL;
wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
"handover request (P2P)");
if (nfc_dh_pubkey == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No NFC DH Public Key configured");
return NULL;
}
msg = wpabuf_alloc(1000);
if (msg == NULL)
return msg;
if (wps_build_manufacturer(&ctx->dev, msg) ||
wps_build_model_name(&ctx->dev, msg) ||
wps_build_model_number(&ctx->dev, msg) ||
wps_build_oob_dev_pw(msg, DEV_PW_NFC_CONNECTION_HANDOVER,
nfc_dh_pubkey, NULL, 0) ||
wps_build_rf_bands(&ctx->dev, msg, 0) ||
wps_build_serial_number(&ctx->dev, msg) ||
wps_build_uuid_e(msg, ctx->uuid) ||
wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
return msg;
}
struct wpabuf * wps_build_nfc_handover_req(struct wps_context *ctx,
struct wpabuf *nfc_dh_pubkey)
{
struct wpabuf *msg;
void *len;
if (ctx == NULL)
return NULL;
wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
"handover request");
if (nfc_dh_pubkey == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No NFC OOB Device Password "
"configured");
return NULL;
}
msg = wpabuf_alloc(1000);
if (msg == NULL)
return msg;
len = wpabuf_put(msg, 2);
if (wps_build_oob_dev_pw(msg, DEV_PW_NFC_CONNECTION_HANDOVER,
nfc_dh_pubkey, NULL, 0) ||
wps_build_uuid_e(msg, ctx->uuid) ||
wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
WPA_PUT_BE16(len, wpabuf_len(msg) - 2);
return msg;
}
struct wpabuf * wps_build_nfc_handover_sel_p2p(struct wps_context *ctx,
int nfc_dev_pw_id,
struct wpabuf *nfc_dh_pubkey,
struct wpabuf *nfc_dev_pw)
{
struct wpabuf *msg;
const u8 *dev_pw;
size_t dev_pw_len;
if (ctx == NULL)
return NULL;
wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
"handover select (P2P)");
if (nfc_dh_pubkey == NULL ||
(nfc_dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER &&
nfc_dev_pw == NULL)) {
wpa_printf(MSG_DEBUG, "WPS: No NFC OOB Device Password "
"configured");
return NULL;
}
msg = wpabuf_alloc(1000);
if (msg == NULL)
return msg;
if (nfc_dev_pw) {
dev_pw = wpabuf_head(nfc_dev_pw);
dev_pw_len = wpabuf_len(nfc_dev_pw);
} else {
dev_pw = NULL;
dev_pw_len = 0;
}
if (wps_build_manufacturer(&ctx->dev, msg) ||
wps_build_model_name(&ctx->dev, msg) ||
wps_build_model_number(&ctx->dev, msg) ||
wps_build_oob_dev_pw(msg, nfc_dev_pw_id, nfc_dh_pubkey,
dev_pw, dev_pw_len) ||
wps_build_rf_bands(&ctx->dev, msg, 0) ||
wps_build_serial_number(&ctx->dev, msg) ||
wps_build_uuid_e(msg, ctx->uuid) ||
wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
return msg;
}
struct wpabuf * wps_build_nfc_pw_token(u16 dev_pw_id,
const struct wpabuf *pubkey,
const struct wpabuf *dev_pw)
{
struct wpabuf *data;
data = wpabuf_alloc(200);
if (data == NULL)
return NULL;
if (wps_build_oob_dev_pw(data, dev_pw_id, pubkey,
wpabuf_head(dev_pw), wpabuf_len(dev_pw)) ||
wps_build_wfa_ext(data, 0, NULL, 0)) {
wpa_printf(MSG_ERROR, "WPS: Failed to build NFC password "
"token");
wpabuf_free(data);
return NULL;
}
return data;
}
struct wpabuf * wps_build_nfc_handover_sel(struct wps_context *ctx,
struct wpabuf *nfc_dh_pubkey,
const u8 *bssid, int freq)
{
struct wpabuf *msg;
void *len;
if (ctx == NULL)
return NULL;
wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
"handover select");
if (nfc_dh_pubkey == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No NFC OOB Device Password "
"configured");
return NULL;
}
msg = wpabuf_alloc(1000);
if (msg == NULL)
return msg;
len = wpabuf_put(msg, 2);
if (wps_build_oob_dev_pw(msg, DEV_PW_NFC_CONNECTION_HANDOVER,
nfc_dh_pubkey, NULL, 0) ||
wps_build_ssid(msg, ctx) ||
wps_build_ap_freq(msg, freq) ||
(bssid && wps_build_mac_addr(msg, bssid)) ||
wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
WPA_PUT_BE16(len, wpabuf_len(msg) - 2);
return msg;
}
