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DPP2: Add Protocol Version attribute to network introduction messages

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This can be used to determine whether to try to negotiate PFS (only
available with version 2 or higher).

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-05-01 17:06:59 +03:00 committed by Jouni Malinen
parent 7ec86f6599
commit 42acf1292d
2 changed files with 26 additions and 4 deletions
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15
src/ap/dpp_hostapd.c
View file

@ -1206,9 +1206,13 @@ static void hostapd_dpp_send_peer_disc_resp(struct hostapd_data *hapd,
enum dpp_status_error status)
{
struct wpabuf *msg;
size_t len;
msg = dpp_alloc_msg(DPP_PA_PEER_DISCOVERY_RESP,
5 + 5 + 4 + os_strlen(hapd->conf->dpp_connector));
len = 5 + 5 + 4 + os_strlen(hapd->conf->dpp_connector);
#ifdef CONFIG_DPP2
len += 5;
#endif /* CONFIG_DPP2 */
msg = dpp_alloc_msg(DPP_PA_PEER_DISCOVERY_RESP, len);
if (!msg)
return;
@ -1281,6 +1285,13 @@ skip_status:
skip_connector:
#endif /* CONFIG_TESTING_OPTIONS */
#ifdef CONFIG_DPP2
/* Protocol Version */
wpabuf_put_le16(msg, DPP_ATTR_PROTOCOL_VERSION);
wpabuf_put_le16(msg, 1);
wpabuf_put_u8(msg, 2);
#endif /* CONFIG_DPP2 */
wpa_printf(MSG_DEBUG, "DPP: Send Peer Discovery Response to " MACSTR
" status=%d", MAC2STR(src), status);
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR

15
wpa_supplicant/dpp_supplicant.c
View file

@ -2474,6 +2474,7 @@ int wpas_dpp_check_connect(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
unsigned int wait_time;
const u8 *rsn;
struct wpa_ie_data ied;
size_t len;
if (!(ssid->key_mgmt & WPA_KEY_MGMT_DPP) || !bss)
return 0; /* Not using DPP AKM - continue */
@ -2507,8 +2508,11 @@ int wpas_dpp_check_connect(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
"DPP: Starting network introduction protocol to derive PMKSA for "
MACSTR, MAC2STR(bss->bssid));
msg = dpp_alloc_msg(DPP_PA_PEER_DISCOVERY_REQ,
5 + 4 + os_strlen(ssid->dpp_connector));
len = 5 + 4 + os_strlen(ssid->dpp_connector);
#ifdef CONFIG_DPP2
len += 5;
#endif /* CONFIG_DPP2 */
msg = dpp_alloc_msg(DPP_PA_PEER_DISCOVERY_REQ, len);
if (!msg)
return -1;
@ -2563,6 +2567,13 @@ skip_trans_id:
skip_connector:
#endif /* CONFIG_TESTING_OPTIONS */
#ifdef CONFIG_DPP2
/* Protocol Version */
wpabuf_put_le16(msg, DPP_ATTR_PROTOCOL_VERSION);
wpabuf_put_le16(msg, 1);
wpabuf_put_u8(msg, 2);
#endif /* CONFIG_DPP2 */
/* TODO: Timeout on AP response */
wait_time = wpa_s->max_remain_on_chan;
if (wait_time > 2000)