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DPP2: Reconfig Authentication Response processing and Confirm generation

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Extend Configurator functionality to process Reconfig Authentication
Response message, derive the needed keys, and generate Reconfig
Authentication Confirm message.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-05-10 12:55:43 +03:00 • committed by Jouni Malinen
parent 65e94351dc
commit 24b01c706b
7 changed files with 497 additions and 3 deletions
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50
src/ap/dpp_hostapd.c
View file

@ -1300,6 +1300,50 @@ hostapd_dpp_rx_reconfig_announcement(struct hostapd_data *hapd, const u8 *src,
}
}
static void
hostapd_dpp_rx_reconfig_auth_resp(struct hostapd_data *hapd, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
struct dpp_authentication *auth = hapd->dpp_auth;
struct wpabuf *conf;
wpa_printf(MSG_DEBUG, "DPP: Reconfig Authentication Response from "
MACSTR, MAC2STR(src));
if (!auth || !auth->reconfig || !auth->configurator) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Reconfig Authentication in progress - drop");
return;
}
if (os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
return;
}
conf = dpp_reconfig_auth_resp_rx(auth, hdr, buf, len);
if (!conf)
return;
eloop_cancel_timeout(hostapd_dpp_reconfig_reply_wait_timeout,
hapd, NULL);
wpa_msg(hapd->msg_ctx, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
" freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_RECONFIG_AUTH_CONF);
if (hostapd_drv_send_action(hapd, freq, 500, src,
wpabuf_head(conf), wpabuf_len(conf)) < 0) {
wpabuf_free(conf);
dpp_auth_deinit(hapd->dpp_auth);
hapd->dpp_auth = NULL;
return;
}
wpabuf_free(conf);
}
#endif /* CONFIG_DPP2 */
@ -1770,6 +1814,10 @@ void hostapd_dpp_rx_action(struct hostapd_data *hapd, const u8 *src,
hostapd_dpp_rx_reconfig_announcement(hapd, src, hdr, buf, len,
freq);
break;
case DPP_PA_RECONFIG_AUTH_RESP:
hostapd_dpp_rx_reconfig_auth_resp(hapd, src, hdr, buf, len,
freq);
break;
#endif /* CONFIG_DPP2 */
default:
wpa_printf(MSG_DEBUG,
@ -1799,7 +1847,7 @@ hostapd_dpp_gas_req_handler(struct hostapd_data *hapd, const u8 *sa,
struct wpabuf *resp;
wpa_printf(MSG_DEBUG, "DPP: GAS request from " MACSTR, MAC2STR(sa));
if (!auth || !auth->auth_success ||
if (!auth || (!auth->auth_success && !auth->reconfig_success) ||
os_memcmp(sa, auth->peer_mac_addr, ETH_ALEN) != 0) {
#ifdef CONFIG_DPP2
if (dpp_relay_rx_gas_req(hapd->iface->interfaces->dpp, sa, data,