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DPP2: Presence Announcement processing in Controller 

Process the received Presence Announcement frames in Controller. If a
matching bootstrapping entry for the peer is found, initiate DPP
authentication to complete provisioning of the Enrollee.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-03-27 19:29:44 +02:00 committed by Jouni Malinen
parent db1ef82538
commit fa5143feb3
1 changed files with 73 additions and 0 deletions
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73
src/common/dpp.c
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@ -11684,6 +11684,76 @@ static int dpp_controller_rx_conn_status_result(struct dpp_connection *conn,
}
static int dpp_controller_rx_presence_announcement(struct dpp_connection *conn,
const u8 *hdr, const u8 *buf,
size_t len)
{
const u8 *r_bootstrap;
u16 r_bootstrap_len;
struct dpp_bootstrap_info *peer_bi;
struct dpp_authentication *auth;
struct dpp_global *dpp = conn->ctrl->global;
if (conn->auth) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore Presence Announcement during ongoing Authentication");
return -1;
}
wpa_printf(MSG_DEBUG, "DPP: Presence Announcement");
r_bootstrap = dpp_get_attr(buf, len, DPP_ATTR_R_BOOTSTRAP_KEY_HASH,
&r_bootstrap_len);
if (!r_bootstrap || r_bootstrap_len != SHA256_MAC_LEN) {
wpa_msg(dpp->msg_ctx, MSG_INFO, DPP_EVENT_FAIL
"Missing or invalid required Responder Bootstrapping Key Hash attribute");
return -1;
}
wpa_hexdump(MSG_MSGDUMP, "DPP: Responder Bootstrapping Key Hash",
r_bootstrap, r_bootstrap_len);
peer_bi = dpp_bootstrap_find_chirp(dpp, r_bootstrap);
if (!peer_bi) {
wpa_printf(MSG_DEBUG,
"DPP: No matching bootstrapping information found");
return -1;
}
auth = dpp_auth_init(dpp, dpp->msg_ctx, peer_bi, NULL,
DPP_CAPAB_CONFIGURATOR, -1, NULL, 0);
if (!auth)
return -1;
if (dpp_set_configurator(conn->auth,
conn->ctrl->configurator_params) < 0) {
dpp_auth_deinit(auth);
dpp_connection_remove(conn);
return -1;
}
conn->auth = auth;
wpabuf_free(conn->msg_out);
conn->msg_out_pos = 0;
conn->msg_out = wpabuf_alloc(4 + wpabuf_len(conn->auth->req_msg) - 1);
if (!conn->msg_out)
return -1;
wpabuf_put_be32(conn->msg_out, wpabuf_len(conn->auth->req_msg) - 1);
wpabuf_put_data(conn->msg_out, wpabuf_head_u8(conn->auth->req_msg) + 1,
wpabuf_len(conn->auth->req_msg) - 1);
if (dpp_tcp_send(conn) == 1) {
if (!conn->write_eloop) {
if (eloop_register_sock(conn->sock, EVENT_TYPE_WRITE,
dpp_conn_tx_ready,
conn, NULL) < 0)
return -1;
conn->write_eloop = 1;
}
}
return 0;
}
static int dpp_controller_rx_action(struct dpp_connection *conn, const u8 *msg,
size_t len)
{
@ -11734,6 +11804,9 @@ static int dpp_controller_rx_action(struct dpp_connection *conn, const u8 *msg,
case DPP_PA_CONNECTION_STATUS_RESULT:
return dpp_controller_rx_conn_status_result(conn, msg, pos,
end - pos);
case DPP_PA_PRESENCE_ANNOUNCEMENT:
return dpp_controller_rx_presence_announcement(conn, msg, pos,
end - pos);
default:
/* TODO: missing messages types */
wpa_printf(MSG_DEBUG,